diff options
Diffstat (limited to 'lib/ssh')
135 files changed, 8333 insertions, 4108 deletions
diff --git a/lib/ssh/doc/specs/.gitignore b/lib/ssh/doc/specs/.gitignore new file mode 100644 index 0000000000..322eebcb06 --- /dev/null +++ b/lib/ssh/doc/specs/.gitignore @@ -0,0 +1 @@ +specs_*.xml diff --git a/lib/ssh/doc/src/Makefile b/lib/ssh/doc/src/Makefile index f54f5e0708..4e32dd9976 100644 --- a/lib/ssh/doc/src/Makefile +++ b/lib/ssh/doc/src/Makefile @@ -1,7 +1,7 @@ # # %CopyrightBegin% # -# Copyright Ericsson AB 2004-2017. All Rights Reserved. +# Copyright Ericsson AB 2004-2018. All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. @@ -38,23 +38,27 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN) # Target Specs # ---------------------------------------------------- XML_APPLICATION_FILES = ref_man.xml -XML_REF3_FILES = ssh.xml \ - ssh_channel.xml \ - ssh_connection.xml \ +XML_REF3_FILES = \ + ssh.xml \ + ssh_client_channel.xml \ ssh_client_key_api.xml \ + ssh_connection.xml \ + ssh_server_channel.xml \ ssh_server_key_api.xml \ + ssh_file.xml \ ssh_sftp.xml \ ssh_sftpd.xml \ XML_REF6_FILES = ssh_app.xml -XML_PART_FILES = \ - usersguide.xml -XML_CHAPTER_FILES = notes.xml \ +XML_PART_FILES = usersguide.xml + +XML_CHAPTER_FILES = \ + notes.xml \ introduction.xml \ using_ssh.xml \ + terminology.xml \ configure_algos.xml -# ssh_protocol.xml \ BOOK_FILES = book.xml @@ -84,12 +88,19 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf +SPECS_FILES = $(XML_REF3_FILES:%.xml=$(SPECDIR)/specs_%.xml) + +TOP_SPECS_FILE = specs.xml + # ---------------------------------------------------- # FLAGS # ---------------------------------------------------- XML_FLAGS += DVIPS_FLAGS += +#SPECS_FLAGS = -I../../include -I../../../kernel/include +SPECS_FLAGS = -I../../../public_key/include -I../../../public_key/src -I../../.. + # ---------------------------------------------------- # Targets # ---------------------------------------------------- @@ -109,8 +120,10 @@ html: images $(HTML_REF_MAN_FILE) clean clean_docs: rm -rf $(HTMLDIR)/* + rm -rf $(XMLDIR) rm -f $(MAN3DIR)/* rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo) + rm -f $(SPECS_FILES) rm -f errs core *~ man: $(MAN3_FILES) $(MAN6_FILES) diff --git a/lib/ssh/doc/src/configure_algos.xml b/lib/ssh/doc/src/configure_algos.xml index dd60324851..fa45b1cb4c 100644 --- a/lib/ssh/doc/src/configure_algos.xml +++ b/lib/ssh/doc/src/configure_algos.xml @@ -5,7 +5,7 @@ <header> <copyright> <year>2017</year> - <year>2017</year> + <year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -117,6 +117,7 @@ <p>Due to this, it impossible to list in documentation what algorithms that are available in a certain installation.</p> <p>There is an important command to list the actual algorithms and their ordering: <seealso marker="ssh#default_algorithms-0">ssh:default_algorithms/0</seealso>.</p> + <marker id="example_default_algorithms"/> <code type="erl"> 0> ssh:default_algorithms(). [{kex,['ecdh-sha2-nistp384','ecdh-sha2-nistp521', @@ -156,7 +157,7 @@ <section> <title>Replacing the default set: preferred_algorithms</title> - <p>See the <seealso marker="ssh#option_preferred_algorithms">Reference Manual</seealso> for details</p> + <p>See the <seealso marker="ssh#type-preferred_algorithms_common_option">Reference Manual</seealso> for details</p> <p>Here follows a series of examples ranging from simple to more complex.</p> @@ -301,7 +302,7 @@ First one has to list them with <c>ssh:default_algorithms()</c> and then do changes in the lists.</p> <p>To facilitate addition or removal of algorithms the option <c>modify_algorithms</c> is available. - See the <seealso marker="ssh#option_modify_algorithms">Reference Manual</seealso> for details.</p> + See the <seealso marker="ssh#type-modify_algorithms_common_option">Reference Manual</seealso> for details.</p> <p>The option takes a list with instructions to append, prepend or remove algorithms:</p> <code type="erl"> diff --git a/lib/ssh/doc/src/introduction.xml b/lib/ssh/doc/src/introduction.xml index b7a73e2597..8444daf0cc 100644 --- a/lib/ssh/doc/src/introduction.xml +++ b/lib/ssh/doc/src/introduction.xml @@ -5,7 +5,7 @@ <header> <copyright> <year>2012</year> - <year>2016</year> + <year>2018</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> @@ -145,7 +145,7 @@ data that can be sent to the channel peer without adjusting the window. Typically, an SSH client opens a channel, sends data (commands), receives data (control information), and then closes the channel. - The <seealso marker="ssh_channel">ssh_channel</seealso> behaviour + The <seealso marker="ssh_client_channel">ssh_client_channel</seealso> behaviour handles generic parts of SSH channel management. This makes it easy to write your own SSH client/server processes that use flow-control and thus opens for more focus on the application logic. diff --git a/lib/ssh/doc/src/notes.xml b/lib/ssh/doc/src/notes.xml index ba563335a2..9503060140 100644 --- a/lib/ssh/doc/src/notes.xml +++ b/lib/ssh/doc/src/notes.xml @@ -4,7 +4,7 @@ <chapter> <header> <copyright> - <year>2004</year><year>2017</year> + <year>2004</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -30,6 +30,466 @@ <file>notes.xml</file> </header> +<section><title>Ssh 4.7.6</title> + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + When an SSH server receives the very first message on a + new TCP connection, and that message is not the expected + one, the 64 first bytes of the received message are now + dumped in the INFO REPORT that reports the Protocol + Error.</p> + <p> + This facilitates the debugging of who sends the bad + message or of detecting a possible port scanning.</p> + <p> + Own Id: OTP-15772</p> + </item> + </list> + </section> + +</section> + +<section><title>Ssh 4.7.5</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + The callback <c>ssh_channel:init/1</c> was missing in + OTP-21</p> + <p> + Own Id: OTP-15762</p> + </item> + <item> + <p> + If a client was connected to an server on an already open + socket, the callback <c>fun(PeerName,FingerPrint)</c> in + the <c>accept_callback</c> option passed the local name + in the argument PeerName instead of the remote name.</p> + <p> + Own Id: OTP-15763</p> + </item> + </list> + </section> + +</section> + +<section><title>Ssh 4.7.4</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + SSH sftp daemon now accepts an SSH_FXP_STAT message + encoded according to the wrong sftp version. Some clients + sends such messages.</p> + <p> + Own Id: OTP-15498 Aux Id: ERL-822, PR-2077 </p> + </item> + </list> + </section> + +</section> + +<section><title>Ssh 4.7.3</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fixed port leakage if a ssh:daemon call failed.</p> + <p> + Own Id: OTP-15397 Aux Id: ERL-801 </p> + </item> + </list> + </section> + +</section> + +<section><title>Ssh 4.7.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Incompatibility with newer OpenSSH fixed. Previously + versions 7.8 and later could cause Erlang SSH to exit.</p> + <p> + Own Id: OTP-15413</p> + </item> + <item> + <p> + The '<c>exec</c>' option for ssh daemons had wrong format + in the documentation.</p> + <p> + Own Id: OTP-15416</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Added public key methods ssh-ed25519 and ssh-ed448.</p> + <p> + Requires OpenSSL 1.1.1 or higher as cryptolib under the + OTP application <c>crypto</c>.</p> + <p> + Own Id: OTP-15094 Aux Id: OTP-15419 </p> + </item> + <item> + <p> + The SSH property tests are now adapted to the PropEr + testing tool.</p> + <p> + Own Id: OTP-15312</p> + </item> + <item> + <p> + The term "user" was not documented in the SSH app. A new + chapter with terminology is added to the User's Manual + where the term "user" is defined.</p> + <p> + A reference manual page about the module <c>ssh_file</c> + is also added. This is the default callback module for + user's keys, host keys etc.</p> + <p> + Own Id: OTP-15314</p> + </item> + <item> + <p> + Host and user key checking is made more robust.</p> + <p> + Own Id: OTP-15424</p> + </item> + </list> + </section> + +</section> + +<section><title>Ssh 4.7.1</title> + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Extended the undocumented <c>ssh_dbg</c> debug module + with an api for a circular trace buffer. This makes it + easy to record the last low-level events before an error + is detected. It is intended for solving difficult errors.</p> + <p> + Own Id: OTP-15020</p> + </item> + <item> + <p> + The key exchange methods + <c>'[email protected]'</c>, + <c>'curve25519-sha256'</c> and <c>'curve448-sha512'</c> + are implemented. The last two are defined in + https://tools.ietf.org/html/draft-ietf-curdle-ssh-curves</p> + <p> + They all depends on that OpenSSL 1.1.1 or higher is used + as cryptolib.</p> + <p> + Own Id: OTP-15133 Aux Id: OTP-15240 </p> + </item> + <item> + <p> + The cipher '<c>[email protected]</c>' is now + supported if OpenSSL 1.1.1 or higher is used as + cryptolib.</p> + <p> + Own Id: OTP-15209 Aux Id: OTP-15164 </p> + </item> + </list> + </section> + +</section> + +<section><title>Ssh 4.7</title> + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + If the daemon port listener is restarted, it could + potentially fail with <c>eaddrinuse</c> if the timing is + unlucky. It will now retry and exponentially back off the + listener restart a few times before failing.</p> + <p> + Own Id: OTP-14955</p> + </item> + <item> + <p> + A channel callback module always got the module name as + reason in a call to terminate. Now it will get the proper + Reason, usually 'normal'.</p> + <p> + Own Id: OTP-15084</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + The option <c>exec</c> has new option values defined to + make it much more easy to implement an own <c>exec</c> + server.</p> + <p> + An option called <c>exec</c> for daemons implementing the + handling of 'exec' requests has existed a long time but + has been undocumented. The old undocumented value - as + well as its behavior - is kept for compatibility EXCEPT + that error messages are changed and are sent as + "stderror" text.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-14851</p> + </item> + <item> + <p> + Updated ssh_connection:shell/2 documentation.</p> + <p> + Own Id: OTP-14880</p> + </item> + <item> + <p> + The experimental <c>ssh_dbg</c> module is completely + re-written. Its purpose is to make tracing and debugging + easier on deployed systems.</p> + <p> + Own Id: OTP-14896</p> + </item> + <item> + <p> + The SSH supervisor structure has been slightly changed. + This makes stopping the ssh application considerably + faster if there are open connections. This is important + in for example restarts.</p> + <p> + Own Id: OTP-14988</p> + </item> + <item> + <p> + The type specifications in SSH are completly reworked and + the following types are renamed:</p> + <p> + <c>ssh:ssh_connection_ref()</c> is changed to + <c>ssh:connection_ref()</c>, </p> + <p> + <c>ssh:ssh_daemon_ref()</c> is changed to + <c>ssh:daemon_ref()</c>,</p> + <p> + <c>ssh:ssh_channel_id()</c> is changed to + <c>ssh:channel_id()</c>.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-15002 Aux Id: OTP-15030 </p> + </item> + <item> + <p> + The internal timer handling in SSH is now based on the + gen_statem timers.</p> + <p> + Own Id: OTP-15019</p> + </item> + <item> + <p> + Removed the undocumented and unused modules + <c>ssh_client_key.erl</c> and <c>ssh_server_key.erl</c>.</p> + <p> + Own Id: OTP-15028</p> + </item> + <item> + <p> + The Reference Manual pages are partly updated.</p> + <p> + The ssh page is now generated from specs and types, is + restructured and is partly rephrased.</p> + <p> + The ssh_channel, ssh_connection, ssh_client_key_api, + ssh_server_key_api and ssh_sftp pages are updated with + links, correct type names and some minor changes.</p> + <p> + Own Id: OTP-15030 Aux Id: OTP-15002 </p> + </item> + <item> + <p> + The behaviors <c>ssh_channel</c> and + <c>ssh_daemon_channel</c> are renamed to + <c>ssh_client_channel</c> and <c>ssh_server_channel</c> + respectively.</p> + <p> + The old modules are kept for compatibility but should + preferably be replaced when updating callback modules + referring them.</p> + <p> + Own Id: OTP-15041</p> + </item> + <item> + <p> + New test suite for channels.</p> + <p> + Own Id: OTP-15051</p> + </item> + <item> + <p> + The <c>rekey_limit</c> option could now set the max time + as well as the previously max data amount.</p> + <p> + Own Id: OTP-15069 Aux Id: ERL-617 </p> + </item> + <item> + <p> + Changed process exit supervision from links to monitors.</p> + <p> + Own Id: OTP-15082</p> + </item> + <item> + <p> + Better handling of misbehaving channel callback modules.</p> + <p> + Own Id: OTP-15083</p> + </item> + <item> + <p> + A new moduli file is generated. This file is used for the + recommended <c>diffie-hellman-group-exchange-sha256</c> + key exchange algorithm in SSH.</p> + <p> + Own Id: OTP-15113</p> + </item> + </list> + </section> +</section> + +<section><title>Ssh 4.6.9.3</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fixed port leakage if a ssh:daemon call failed.</p> + <p> + Own Id: OTP-15397 Aux Id: ERL-801 </p> + </item> + </list> + </section> + +</section> + +<section><title>Ssh 4.6.9.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Incompatibility with newer OpenSSH fixed. Previously + versions 7.8 and later could cause Erlang SSH to exit.</p> + <p> + Own Id: OTP-15413</p> + </item> + </list> + </section> + +</section> + +<section><title>Ssh 4.6.9.1</title> + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + SFTP clients reported the error reason <c>""</c> if a + non-OTP sftp server was killed during a long file + transmission.</p> + <p> + Now the signal name (for example <c>"KILL"</c>) will be + the error reason if the server's reason is empty.</p> + <p> + The documentation also lacked type information about this + class of errors.</p> + <p> + Own Id: OTP-15148 Aux Id: ERIERL-194 </p> + </item> + <item> + <p> + Fix ssh_sftp decode error for sftp protocol version 4</p> + <p> + Own Id: OTP-15149 Aux Id: ERIERL-199 </p> + </item> + </list> + </section> + +</section> + +<section><title>Ssh 4.6.9</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Host key hash erroneously calculated for clients + following draft-00 of RFC 4419, for example PuTTY</p> + <p> + Own Id: OTP-15064</p> + </item> + <item> + <p> + Renegotiation could fail in some states</p> + <p> + Own Id: OTP-15066</p> + </item> + </list> + </section> + +</section> + +<section><title>Ssh 4.6.8</title> + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + An ssh_sftp server (running version 6) could fail if it + is told to remove a file which in fact is a directory.</p> + <p> + Own Id: OTP-15004</p> + </item> + <item> + <p> + Fix rare spurios shutdowns of ssh servers when receiveing + <c>{'EXIT',_,normal}</c> messages.</p> + <p> + Own Id: OTP-15018</p> + </item> + </list> + </section> + +</section> + +<section><title>Ssh 4.6.7</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix bad spec in ssh.hrl: <c>double_algs()</c>.</p> + <p> + Own Id: OTP-14990</p> + </item> + </list> + </section> + +</section> + <section><title>Ssh 4.6.6</title> <section><title>Fixed Bugs and Malfunctions</title> @@ -44,8 +504,6 @@ </item> </list> </section> - - <section><title>Improvements and New Features</title> <list> <item> @@ -452,6 +910,48 @@ </section> +<section><title>Ssh 4.4.2.4</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix rare spurios shutdowns of ssh servers when receiveing + <c>{'EXIT',_,normal}</c> messages.</p> + <p> + Own Id: OTP-15018</p> + </item> + <item> + <p> + Host key hash erroneously calculated for clients + following draft-00 of RFC 4419, for example PuTTY</p> + <p> + Own Id: OTP-15064</p> + </item> + <item> + <p> + Renegotiation could fail in some states</p> + <p> + Own Id: OTP-15066</p> + </item> + </list> + </section> + +</section> + +<section><title>Ssh 4.4.2.3</title> + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + An ssh_sftp server (running version 6) could fail if it + is told to remove a file which in fact is a directory.</p> + <p> + Own Id: OTP-15004</p> + </item> + </list> + </section> +</section> <section><title>Ssh 4.4.2.2</title> <section><title>Improvements and New Features</title> @@ -856,6 +1356,21 @@ </section> +<section><title>Ssh 4.2.2.6</title> + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix rare spurios shutdowns of ssh servers when receiveing + <c>{'EXIT',_,normal}</c> messages.</p> + <p> + Own Id: OTP-15018</p> + </item> + </list> + </section> +</section> + + <section><title>Ssh 4.2.2.5</title> <section><title>Improvements and New Features</title> <list> @@ -3527,4 +4042,3 @@ </section> </chapter> - diff --git a/lib/ssh/doc/src/ref_man.xml b/lib/ssh/doc/src/ref_man.xml index 140ebd8c76..60572b985b 100644 --- a/lib/ssh/doc/src/ref_man.xml +++ b/lib/ssh/doc/src/ref_man.xml @@ -4,7 +4,7 @@ <application xmlns:xi="http://www.w3.org/2001/XInclude"> <header> <copyright> - <year>2004</year><year>2016</year> + <year>2004</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -35,10 +35,12 @@ </description> <xi:include href="ssh_app.xml"/> <xi:include href="ssh.xml"/> - <xi:include href="ssh_channel.xml"/> + <xi:include href="ssh_client_channel.xml"/> + <xi:include href="ssh_server_channel.xml"/> <xi:include href="ssh_connection.xml"/> <xi:include href="ssh_client_key_api.xml"/> <xi:include href="ssh_server_key_api.xml"/> + <xi:include href="ssh_file.xml"/> <xi:include href="ssh_sftp.xml"/> <xi:include href="ssh_sftpd.xml"/> </application> diff --git a/lib/ssh/doc/src/specs.xml b/lib/ssh/doc/src/specs.xml new file mode 100644 index 0000000000..a6517f3660 --- /dev/null +++ b/lib/ssh/doc/src/specs.xml @@ -0,0 +1,14 @@ +<?xml version="1.0" encoding="utf-8" ?> +<specs xmlns:xi="http://www.w3.org/2001/XInclude"> + <xi:include href="../specs/specs_ssh.xml"/> + <xi:include href="../specs/specs_ssh_client_channel.xml"/> + <xi:include href="../specs/specs_ssh_client_key_api.xml"/> + <xi:include href="../specs/specs_ssh_connection.xml"/> + <xi:include href="../specs/specs_ssh_server_channel.xml"/> + <xi:include href="../specs/specs_ssh_server_key_api.xml"/> + <xi:include href="../specs/specs_ssh_file.xml"/> + <xi:include href="../specs/specs_ssh_sftp.xml"/> + <xi:include href="../specs/specs_ssh_sftpd.xml"/> +</specs> + + diff --git a/lib/ssh/doc/src/ssh.xml b/lib/ssh/doc/src/ssh.xml index acf94ff6af..1a53a2ea98 100644 --- a/lib/ssh/doc/src/ssh.xml +++ b/lib/ssh/doc/src/ssh.xml @@ -4,15 +4,15 @@ <erlref> <header> <copyright> - <year>2004</year><year>2017</year> + <year>2004</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 + + http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, @@ -28,188 +28,189 @@ <date>2007-10-06</date> <rev></rev> </header> - <module>ssh</module> + <module since="">ssh</module> <modulesummary>Main API of the ssh application</modulesummary> <description> - <p>Interface module for the <c>ssh</c> application.</p> - <p>See <seealso marker="ssh:SSH_app#supported">ssh(6)</seealso> for details of supported version, - algorithms and unicode support.</p> + <p>This is the interface module for the <c>SSH</c> application. + The Secure Shell (SSH) Protocol is a protocol for secure remote login + and other secure network services over an insecure network. + See <seealso marker="ssh:SSH_app#supported">ssh(6)</seealso> for details of supported RFCs, versions, + algorithms and unicode handling. + </p> + <p>With the SSH application it is possible to start <i>clients</i> and to start <i>daemons</i> (servers). + </p> + <p>Clients are started with + <seealso marker="#connect/2">connect/2</seealso>, + <seealso marker="#connect/3">connect/3</seealso> or + <seealso marker="#connect/4">connect/4</seealso>. They open an encrypted connection on top of TCP/IP. + In that encrypted connection one or more channels could be opened with + <seealso marker="ssh_connection#session_channel/2">ssh_connection:session_channel/2,4</seealso>. + </p> + <p>Each channel is an isolated "pipe" between a client-side process and a server-side process. Thoose process + pairs could handle for example file transfers (sftp) or remote command execution (shell, exec and/or cli). + If a custom shell is implemented, the user of the client could execute the special commands remotely. Note that + the user is not necessarily a human but probably a system interfacing the SSH app. + </p> + <p>A server-side subssystem (channel) server is requested by the client with + <seealso marker="ssh_connection#subsystem/4">ssh_connection:subsystem/4</seealso>. + </p> + <p>A server (daemon) is started with + <seealso marker="#daemon/2">daemon/1</seealso>, + <seealso marker="#daemon/2">daemon/2</seealso> or + <seealso marker="#daemon/2">daemon/3</seealso>. + Possible channel handlers (subsystems) are declared with the + <seealso marker="#type-subsystem_daemon_option">subsystem</seealso> option when the daemon is started. + </p> + <p>To just run a shell on a remote machine, there are functions that bundles the needed + three steps needed into one: + <seealso marker="#shell/1">shell/1,2,3</seealso>. + Similarily, to just open an sftp (file transfer) connection to a remote machine, the simplest way is to use + <seealso marker="ssh_sftp#start_channel/1">ssh_sftp:start_channel/1,2,3</seealso>. + </p> + <p>To write your own client channel handler, use the behaviour + <seealso marker="ssh_client_channel">ssh_client_channel</seealso>. For server channel handlers use + <seealso marker="ssh_server_channel">ssh_server_channel</seealso> behaviour (replaces ssh_daemon_channel). + </p> + <p>Both clients and daemons accepts options that controls the exact behaviour. Some options are common to both. + The three sets are called + <seealso marker="#type-client_options">Client Options</seealso>, + <seealso marker="#type-daemon_options">Daemon Options</seealso> and + <seealso marker="#type-common_options">Common Options</seealso>. + </p> + <p>The descriptions of the options uses the + <seealso marker="doc/reference_manual:typespec">Erlang Type Language</seealso> with explaining text. + </p> + <note> + <p>The <seealso marker="users_guide">User's Guide</seealso> has examples and a + <seealso marker="using_ssh">Getting Started</seealso> + section. + </p> + </note> </description> <section> - <title>OPTIONS</title> - <p>The exact behaviour of some functions can be adjusted with the use of options which are documented together - with the functions. Generally could each option be used at most one time in each function call. If given two or more - times, the effect is not predictable unless explicitly documented.</p> - <p>The options are of different kinds:</p> - <taglist> - <tag>Limits</tag> - <item><p>which alters limits in the system, for example number of simultaneous login attempts.</p></item> - - <tag>Timeouts</tag> - <item><p>which give some defined behaviour if too long time elapses before a given event or action, - for example time to wait for an answer.</p></item> - - <tag>Callbacks</tag> - <item><p>which gives the caller of the function the possibility to execute own code on some events, - for example calling an own logging function or to perform an own login function</p></item> - - <tag>Behaviour</tag> - <item><p>which changes the systems behaviour.</p></item> - </taglist> + <title>Keys and files</title> + <p>A number of objects must be present for the SSH application to work. + Thoose objects are per default stored in files. + The default names, paths and file formats are the same as for + <url href="http://www.openssh.com">OpenSSH</url>. Keys could be generated with the <c>ssh-keygen</c> + program from OpenSSH. See the + <seealso marker="using_ssh#running-an-erlang-ssh-daemon">User's Guide</seealso>. + </p> + + <p>The paths could easily be changed by options: + <seealso marker="ssh_file#type-user_dir_common_option"><c>user_dir</c></seealso> and + <seealso marker="ssh_file#type-system_dir_daemon_option"><c>system_dir</c></seealso>. + </p> + <p>A completly different storage could be interfaced by writing call-back modules + using the behaviours + <seealso marker="ssh_client_key_api">ssh_client_key_api</seealso> and/or + <seealso marker="ssh_server_key_api">ssh_server_key_api</seealso>. + A callback module is installed with the option + <seealso marker="#type-key_cb_common_option"><c>key_cb</c></seealso> + to the client and/or the daemon. + </p> + + <section> + <title>Daemons</title> + <p>The keys are by default stored in files:</p> + <list> + <item>Mandatory: one or more <i>Host key(s)</i>, both private and public. Default is to + store them in the directory <c>/etc/ssh</c> in the files + <list> + <item><c>ssh_host_dsa_key</c> and <c>ssh_host_dsa_key.pub</c></item> + <item><c>ssh_host_rsa_key</c> and <c>ssh_host_rsa_key.pub</c></item> + <item><c>ssh_host_ecdsa_key</c> and <c>ssh_host_ecdsa_key.pub</c></item> + </list> + <p>The host keys directory could be changed with the option + <seealso marker="ssh_file#type-system_dir_daemon_option"><c>system_dir</c></seealso>.</p> + </item> + <item>Optional: one or more <i>User's public key</i> in case of <c>publickey</c> authorization. + Default is to store them concatenated in the file <c>.ssh/authorized_keys</c> in the user's home directory. + <p>The user keys directory could be changed with the option + <seealso marker="ssh_file#type-user_dir_common_option"><c>user_dir</c></seealso>.</p> + </item> + </list> + </section> + + <section> + <title>Clients</title> + <p>The keys and some other data are by default stored in files in the directory <c>.ssh</c> + in the user's home directory.</p> + <p>The directory could be changed with the option + <seealso marker="ssh_file#type-user_dir_common_option"><c>user_dir</c></seealso>. + </p> + <list> + <item>Optional: a list of <i>Host public key(s)</i> for previously connected hosts. This list + is handled by the SSH application without any need of user assistance. The default + is to store them in the file <c>known_hosts</c>. + <p>The + <seealso marker="#type-host_accepting_client_options">host_accepting_client_options()</seealso> + are associated with this list of keys. + </p> + </item> + <item>Optional: one or more <i>User's private key(s)</i> in case of <c>publickey</c> authorization. + The default files are + <list> + <item><c>id_dsa</c> and <c>id_dsa.pub</c></item> + <item><c>id_rsa</c> and <c>id_rsa.pub</c></item> + <item><c>id_ecdsa</c> and <c>id_ecdsa.pub</c></item> + </list> + </item> + </list> + </section> + </section> - <section> - <title>DATA TYPES</title> - <p>Type definitions that are used more than once in - this module, or abstractions to indicate the intended use of the data - type, or both:</p> - <taglist> - <tag><c>boolean() =</c></tag> - <item><p><c>true | false</c></p></item> - <tag><c>string() =</c></tag> - <item><p><c>[byte()]</c></p></item> - <tag><c>ssh_daemon_ref() =</c></tag> - <item><p>opaque() - - as returned by <c>ssh:daemon/[1,2,3]</c></p></item> - <tag><c>ssh_connection_ref() =</c></tag> - <item><p>opaque() - as returned by <c>ssh:connect/3</c></p></item> - <tag><c>ip_address() =</c></tag> - <item><p><c>inet::ip_address</c></p></item> - <tag><c>subsystem_spec() =</c></tag> - <item><p><c>{subsystem_name(), - {channel_callback(), channel_init_args()}}</c></p></item> - <tag><c>subsystem_name() =</c></tag> - <item><p><c>string()</c></p></item> - <tag><c>channel_callback() =</c></tag> - <item><p><c>atom()</c> - Name of the Erlang module - implementing the subsystem using the <c>ssh_channel</c> behavior, see - <seealso marker="ssh_channel">ssh_channel(3)</seealso></p></item> - <tag><c>key_cb() =</c></tag> - <item> - <p><c>atom() | {atom(), list()}</c></p> - <p><c>atom()</c> - Name of the erlang module implementing the behaviours - <seealso marker="ssh_client_key_api">ssh_client_key_api</seealso> or - <seealso marker="ssh_client_key_api">ssh_client_key_api</seealso> as the - case maybe.</p> - <p><c>list()</c> - List of options that can be passed to the callback module.</p> - </item> - <tag><c>channel_init_args() =</c></tag> - <item><p><c>list()</c></p></item> - - <tag><c>algs_list() =</c></tag> - <item><p><c>list( alg_entry() )</c></p></item> - - <tag><c>alg_entry() =</c></tag> - <item><p><c>{kex, simple_algs()} | {public_key, simple_algs()} | {cipher, double_algs()} | {mac, double_algs()} | {compression, double_algs()}</c></p></item> - - <tag><c>simple_algs() =</c></tag> - <item><p><c>list( atom() )</c></p></item> - - <tag><c>double_algs() =</c></tag> - <item><p><c>[{client2serverlist,simple_algs()},{server2client,simple_algs()}] | simple_algs()</c></p></item> + <!-- + ================================================================ + = Data types = + ================================================================ + --> - <tag><c>modify_algs_list() =</c></tag> - <item><p><c>list( {append,algs_list()} | {prepend,algs_list()} | {rm,algs_list()} )</c></p></item> - </taglist> -</section> + <datatypes> - <funcs> - - <func> - <name>close(ConnectionRef) -> ok </name> - <fsummary>Closes an SSH connection.</fsummary> - <type> - <v>ConnectionRef = ssh_connection_ref()</v> - </type> - <desc><p>Closes an SSH connection.</p> + <datatype_title>Client Options</datatype_title> + + <datatype> + <name name="client_options"/> + <name name="client_option"/> + <desc> + <p>Options for <seealso marker="#connect/3">clients</seealso>. + The individual options are further explained below or by following the hyperlinks. + </p> </desc> - </func> - - <func> - <name>connect(Host, Port, Options) -> </name> - <name>connect(Host, Port, Options, Timeout) -> </name> - <name>connect(TcpSocket, Options) -> </name> - <name>connect(TcpSocket, Options, Timeout) -> - {ok, ssh_connection_ref()} | {error, Reason}</name> - <fsummary>Connects to an SSH server.</fsummary> - <type> - <v>Host = string()</v> - <v>Port = integer()</v> - <d><c><![CDATA[22]]></c> is default, the assigned well-known port - number for SSH.</d> - <v>Options = [{Option, Value}]</v> - <v>Timeout = infinity | integer()</v> - <d>Negotiation time-out in milli-seconds. The default value is <c>infinity</c>. - For connection time-out, use option <c>{connect_timeout, timeout()}</c>.</d> - <v>TcpSocket = port()</v> - <d>The socket is supposed to be from <seealso marker="kernel:gen_tcp#connect-3">gen_tcp:connect</seealso> or <seealso marker="kernel:gen_tcp#accept-1">gen_tcp:accept</seealso> with option <c>{active,false}</c></d> - </type> + </datatype> + + <datatype> + <name name="host_accepting_client_options"/> + <name name="accept_hosts"/> + <name name="fp_digest_alg"/> + <name name="accept_callback"/> + <name name="fingerprint"/> <desc> - <p>Connects to an SSH server. No channel is started. This is done - by calling - <seealso marker="ssh_connection#session_channel/2"> - ssh_connection:session_channel/[2, 4]</seealso>.</p> - <p>Options:</p> <taglist> - <tag><c><![CDATA[{inet, inet | inet6}]]></c></tag> - <item> - <p>IP version to use.</p> - </item> - <tag><marker id="opt_user_dir"></marker><c><![CDATA[{user_dir, string()}]]></c></tag> - <item> - <p>Sets the user directory, that is, the directory containing - <c>ssh</c> configuration files for the user, such as - <c><![CDATA[known_hosts]]></c>, <c><![CDATA[id_rsa, - id_dsa]]></c>, and - <c><![CDATA[authorized_key]]></c>. Defaults to the - directory normally referred to as - <c><![CDATA[~/.ssh]]></c>.</p> - </item> - <tag><c><![CDATA[{dsa_pass_phrase, string()}]]></c></tag> - <item> - <p>If the user DSA key is protected by a passphrase, it can be - supplied with this option. - </p> - </item> - <tag><c><![CDATA[{rsa_pass_phrase, string()}]]></c></tag> + <tag><c>silently_accept_hosts</c></tag> <item> - <p>If the user RSA key is protected by a passphrase, it can be - supplied with this option. - </p> - </item> - <tag><c><![CDATA[{ecdsa_pass_phrase, string()}]]></c></tag> - <item> - <p>If the user ECDSA key is protected by a passphrase, it can be - supplied with this option. - </p> - </item> - <tag> - <c><![CDATA[{silently_accept_hosts, boolean()}]]></c> <br/> - <c><![CDATA[{silently_accept_hosts, CallbackFun}]]></c> <br/> - <c><![CDATA[{silently_accept_hosts, {HashAlgoSpec, CallbackFun} }]]></c> <br/> - <br/> - <c><![CDATA[HashAlgoSpec = crypto:digest_type() | [ crypto:digest_type() ] ]]></c><br/> - <c><![CDATA[CallbackFun = fun(PeerName, FingerPrint) -> boolean()]]></c><br/> - <c><![CDATA[PeerName = string()]]></c><br/> - <c><![CDATA[FingerPrint = string() | [ string() ] ]]></c> - </tag> - <item> - <p>This option guides the <c>connect</c> function how to act when the connected server presents a Host + <p>This option guides the <c>connect</c> function on how to act when the connected server presents a Host Key that the client has not seen before. The default is to ask the user with a question on stdio of whether to accept or reject the new Host Key. - See also the option <seealso marker="#opt_user_dir"><c>user_dir</c></seealso> - for the path to the file <c>known_hosts</c> where previously accepted Host Keys are recorded. - </p> + See the option <seealso marker="ssh_file#type-user_dir_common_option"><c>user_dir</c></seealso> + for specifying the path to the file <c>known_hosts</c> where previously accepted Host Keys are recorded. + See also the option + <seealso marker="#type-key_cb_common_option">key_cb</seealso> + for the general way to handle keys. + </p> <p>The option can be given in three different forms as seen above:</p> <list> - <item>The value is a <c>boolean()</c>. The value <c>true</c> will make the client accept any unknown - Host Key without any user interaction. The value <c>false</c> keeps the default behaviour of asking the - the user on stdio. + <item>The value is a <c>boolean()</c>. + The value <c>true</c> will make the client accept any unknown Host Key without any user interaction. + The value <c>false</c> preserves the default behaviour of asking the user on stdio. </item> - <item>A <c>CallbackFun</c> will be called and the boolean return value <c>true</c> will make the client - accept the Host Key. A return value of <c>false</c> will make the client to reject the Host Key and therefore - also the connection will be closed. The arguments to the fun are: + <item>An <c>accept_callback()</c> will be called and the boolean return value <c>true</c> + will make the client + accept the Host Key. A return value of <c>false</c> will make the client to reject the Host Key and as a + result the connection will be closed. The arguments to the fun are: <list type="bulleted"> <item><c>PeerName</c> - a string with the name or address of the remote host.</item> <item><c>FingerPrint</c> - the fingerprint of the Host Key as @@ -218,471 +219,338 @@ </item> </list> </item> - <item>A tuple <c>{HashAlgoSpec, CallbackFun}</c>. The <c>HashAlgoSpec</c> specifies which hash algorithm - shall be used to calculate the fingerprint used in the call of the <c>CallbackFun</c>. The <c>HashALgoSpec</c> - is either an atom or a list of atoms as the first argument in - <seealso marker="public_key:public_key#ssh_hostkey_fingerprint-2">public_key:ssh_hostkey_fingerprint/2</seealso>. - If it is a list of hash algorithm names, the <c>FingerPrint</c> argument in the <c>CallbackFun</c> will be - a list of fingerprints in the same order as the corresponding name in the <c>HashAlgoSpec</c> list. + <item>A tuple <c>{HashAlgoSpec, accept_callback}</c>. The <c>HashAlgoSpec</c> + specifies which hash algorithm + shall be used to calculate the fingerprint used in the call of the <c>accept_callback()</c>. + The <c>HashALgoSpec</c> + is either an atom or a list of atoms as the first argument in + <seealso marker="public_key:public_key#ssh_hostkey_fingerprint-2">public_key:ssh_hostkey_fingerprint/2</seealso>. + If it is a list of hash algorithm names, the <c>FingerPrint</c> argument in the + <c>accept_callback()</c> will be + a list of fingerprints in the same order as the corresponding name in the <c>HashAlgoSpec</c> list. </item> </list> </item> - - <tag><c><![CDATA[{save_accepted_host, boolean()}]]></c></tag> - <item> - <p>If <c>true</c>, the client saves an accepted host key to avoid the - accept question the next time the same host is connected. If the option - <c>key_cb</c> is not present, the key is saved in the file "known_hosts". - </p> - <p>If <c>false</c>, the key is not saved and the key will still be unknown - at the next access of the same host. - </p> - </item> - - <tag><c><![CDATA[{user_interaction, boolean()}]]></c></tag> + + <tag><c>user_interaction</c></tag> <item> <p>If <c>false</c>, disables the client to connect to the server if any user interaction is needed, such as accepting the server to be added to the <c>known_hosts</c> file, or - supplying a password. Defaults to <c>true</c>. - Even if user interaction is allowed it can be + supplying a password.</p> + <p>Even if user interaction is allowed it can be suppressed by other options, such as <c>silently_accept_hosts</c> and <c>password</c>. However, those options are not always desirable to use from a security point of view.</p> + <p>Defaults to <c>true</c>.</p> </item> - <tag><c><![CDATA[{disconnectfun, fun(Reason:term()) -> _}]]></c></tag> - <item> - <p>Provides a fun to implement your own logging when a server disconnects the client.</p> - </item> - - <tag><c><![CDATA[{unexpectedfun, fun(Message:term(), Peer) -> report | skip }]]></c></tag> - <item> - <p>Provides a fun to implement your own logging or other action when an unexpected message arrives. - If the fun returns <c>report</c> the usual info report is issued but if <c>skip</c> is returned no - report is generated.</p> - <p><c>Peer</c> is in the format of <c>{Host,Port}</c>.</p> - </item> - - <tag><c><![CDATA[{pref_public_key_algs, list()}]]></c></tag> - <item> - <p>List of user (client) public key algorithms to try to use.</p> - <p>The default value is the <c>public_key</c> entry in - <seealso marker="#default_algorithms/0">ssh:default_algorithms/0</seealso>. - </p> - <p>If there is no public key of a specified type available, the corresponding entry is ignored. - Note that the available set is dependent on the underlying cryptolib and current user's public keys. - </p> - </item> - - <tag><marker id="option_preferred_algorithms"></marker> - <c><![CDATA[{preferred_algorithms, algs_list()}]]></c></tag> + <tag><c>save_accepted_host</c></tag> <item> - <p>List of algorithms to use in the algorithm negotiation. The default <c>algs_list()</c> can - be obtained from <seealso marker="#default_algorithms/0">default_algorithms/0</seealso>. + <p>If <c>true</c>, the client saves an accepted host key to avoid the + accept question the next time the same host is connected. If the option + <seealso marker="#type-key_cb_common_option"><c>key_cb</c></seealso> + is not present, the key is saved in the file "known_hosts". See option + <seealso marker="ssh_file#type-user_dir_common_option"><c>user_dir</c></seealso> for + the location of that file. </p> - <p>If an alg_entry() is missing in the algs_list(), the default value is used for that entry.</p> - <p>Here is an example of this option:</p> - <code> -{preferred_algorithms, - [{public_key,['ssh-rsa','ssh-dss']}, - {cipher,[{client2server,['aes128-ctr']}, - {server2client,['aes128-cbc','3des-cbc']}]}, - {mac,['hmac-sha2-256','hmac-sha1']}, - {compression,[none,zlib]} - ] -} -</code> - <p>The example specifies different algorithms in the two directions (client2server and server2client), - for cipher but specifies the same algorithms for mac and compression in both directions. - The kex (key exchange) is implicit but public_key is set explicitly.</p> - - <p>For background and more examples see the <seealso marker="configure_algos#introduction">User's Guide</seealso>.</p> - - <warning> - <p>Changing the values can make a connection less secure. Do not change unless you - know exactly what you are doing. If you do not understand the values then you - are not supposed to change them.</p> - </warning> - </item> - - <tag><marker id="option_modify_algorithms"></marker> - <c><![CDATA[{modify_algorithms, modify_algs_list()}]]></c></tag> - <item> - <p>Modifies the list of algorithms to use in the algorithm negotiation. The modifications are - applied after the option <c>preferred_algorithms</c> (if existing) is applied.</p> - <p>The algoritm for modifications works like this:</p> - <list> - <item> - <p>Input is the <c>modify_algs_list()</c> and a set of algorithms <c>A</c> - obtained from the <c>preferred_algorithms</c> option if existing, or else from the - <seealso marker="ssh#default_algorithms-0">ssh:default_algorithms/0</seealso>. - </p> - </item> - <item> - <p>The head of the <c>modify_algs_list()</c> modifies <c>A</c> giving the result <c>A'</c>.</p> - <p>The possible modifications are:</p> - <list> - <item> - <p>Append or prepend supported but not enabled algorithm(s) to the list of - algorithms. If the wanted algorithms already are in <c>A</c> they will first - be removed and then appended or prepended, - </p> - </item> - <item> - <p>Remove (rm) one or more algorithms from <c>A</c>. - </p> - </item> - </list> - </item> - <item> - <p>Repeat the modification step with the tail of <c>modify_algs_list()</c> and the resulting - <c>A'</c>. - </p> - </item> - </list> - <p>If an unsupported algorithm is in the <c>modify_algs_list()</c>, it will be silently ignored</p> - <p>If there are more than one modify_algorithms options, the result is undefined.</p> - <p>Here is an example of this option:</p> - <code> -{modify_algorithms, - [{prepend, [{kex, ['diffie-hellman-group1-sha1']}], - {rm, [{compression, [none]}]} - ] -} -</code> - <p>The example specifies that:</p> - <list> - <item><p>the old key exchange algorithm 'diffie-hellman-group1-sha1' should be - the main alternative. It will be the main alternative since it is prepened to the list</p> - </item> - <item><p>The compression algorithm none (= no compression) is removed so compression is enforced</p> - </item> - </list> - <p>For background and more examples see the <seealso marker="configure_algos#introduction">User's Guide</seealso>.</p> - </item> - - <tag><c><![CDATA[{dh_gex_limits,{Min=integer(),I=integer(),Max=integer()}}]]></c></tag> - <item> - <p>Sets the three diffie-hellman-group-exchange parameters that guides the connected server in choosing a group. - See RFC 4419 for the function of thoose. The default value is <c>{1024, 6144, 8192}</c>. + <p>If <c>false</c>, the key is not saved and the key will still be unknown + at the next access of the same host. </p> + <p>Defaults to <c>true</c></p> </item> - <tag><c><![CDATA[{connect_timeout, timeout()}]]></c></tag> + <tag><c>quiet_mode</c></tag> <item> - <p>Sets a time-out on the transport layer - connection. For <c>gen_tcp</c> the time is in milli-seconds and the default value is - <c>infinity</c>.</p> + <p>If <c>true</c>, the client does not print anything on authorization.</p> + <p>Defaults to <c>false</c></p> </item> + </taglist> + </desc> + </datatype> - <tag><c><![CDATA[{auth_methods, string()}]]></c></tag> - <item> - <p>Comma-separated string that determines which - authentication methods that the client shall support and - in which order they are tried. Defaults to - <c><![CDATA["publickey,keyboard-interactive,password"]]></c></p> - </item> - - <tag><c><![CDATA[{user, string()}]]></c></tag> + <datatype> + <name name="authentication_client_options"/> + <desc> + <taglist> + <tag><c>user</c></tag> <item> - <p>Provides a username. If this option is not given, <c>ssh</c> + <p>Provides the username. If this option is not given, <c>ssh</c> reads from the environment (<c><![CDATA[LOGNAME]]></c> or <c><![CDATA[USER]]></c> on UNIX, <c><![CDATA[USERNAME]]></c> on Windows).</p> </item> - <tag><c><![CDATA[{password, string()}]]></c></tag> + <tag><c>password</c></tag> <item> <p>Provides a password for password authentication. If this option is not given, the user is asked for a password, if the password authentication method is attempted.</p> </item> - - <!--tag><c><![CDATA[{send_ext_info, boolean()}]]></c></tag> - <item> - <p>Send a list of extensions to the server if the server has asked for it. See - <url href="https://tools.ietf.org/html/draft-ietf-curdle-ssh-ext-info">Draft-ietf-curdle-ssh-ext-info (work in progress)</url> for details. - </p> - <p>Currently the client do not react on any extensions. - </p> - <p>Default value is <c>true</c>. - </p> - </item--> - - <tag><c><![CDATA[{recv_ext_info, boolean()}]]></c></tag> - <item> - <p>Tell the server that the client accepts extension negotiation. See - <url href="https://tools.ietf.org/html/draft-ietf-curdle-ssh-ext-info">Draft-ietf-curdle-ssh-ext-info (work in progress)</url> for details. - </p> - <p>Currently implemented extension is <c>server-sig-algs</c> which is the list of the server's preferred - user's public key algorithms. - </p> - <p>Default value is <c>true</c>. - </p> - </item> - - <tag><c><![CDATA[{key_cb, key_cb()}]]></c></tag> - <item> - <p>Module implementing the behaviour <seealso - marker="ssh_client_key_api">ssh_client_key_api</seealso>. Can be used to - customize the handling of public keys. If callback options are provided - along with the module name, they are made available to the callback - module via the options passed to it under the key 'key_cb_private'. - </p> - </item> - - <tag><c><![CDATA[{quiet_mode, atom() = boolean()}]]></c></tag> - <item> - <p>If <c>true</c>, the client does not print anything on authorization.</p> - </item> - - <tag><c><![CDATA[{id_string, random | string()}]]></c></tag> - <item> - <p>The string that the client presents to a connected server initially. The default value is "Erlang/VSN" where VSN is the ssh application version number. - </p> - <p>The value <c>random</c> will cause a random string to be created at each connection attempt. This is to make it a bit more difficult for a malicious peer to find the ssh software brand and version. - </p> - </item> - - <tag><c><![CDATA[{fd, file_descriptor()}]]></c></tag> - <item> - <p>Allows an existing file descriptor to be used - (by passing it on to the transport protocol).</p></item> - <tag><c><![CDATA[{rekey_limit, integer()}]]></c></tag> - <item> - <p>Provides, in bytes, when rekeying is to be initiated. - Defaults to once per each GB and once per hour.</p> - </item> - <tag><c><![CDATA[{idle_time, integer()}]]></c></tag> - <item> - <p>Sets a time-out on a connection when no channels are active. - Defaults to <c>infinity</c>.</p></item> - <tag><c><![CDATA[{ssh_msg_debug_fun, fun(ConnectionRef::ssh_connection_ref(), AlwaysDisplay::boolean(), Msg::binary(), LanguageTag::binary()) -> _}]]></c></tag> - <item> - <p>Provide a fun to implement your own logging of the SSH message SSH_MSG_DEBUG. The last three parameters are from the message, see RFC4253, section 11.3. The <c>ConnectionRef</c> is the reference to the connection on which the message arrived. The return value from the fun is not checked.</p> - <p>The default behaviour is ignore the message. - To get a printout for each message with <c>AlwaysDisplay = true</c>, use for example <c>{ssh_msg_debug_fun, fun(_,true,M,_)-> io:format("DEBUG: ~p~n", [M]) end}</c></p> - </item> - </taglist> - </desc> - </func> + </desc> + </datatype> - <func> - <name>connection_info(ConnectionRef, [Option]) ->[{Option, - Value}]</name> - <fsummary>Retrieves information about a connection.</fsummary> - <type> - <v>Option = client_version | server_version | user | peer | sockname </v> - <v>Value = [option_value()] </v> - <v>option_value() = {{Major::integer(), Minor::integer()}, VersionString::string()} | - User::string() | Peer::{inet:hostname(), {inet::ip_adress(), inet::port_number()}} | - Sockname::{inet::ip_adress(), inet::port_number()}</v> - </type> + <datatype> + <name name="diffie_hellman_group_exchange_client_option"/> <desc> - <p>Retrieves information about a connection.</p> + <p>Sets the three diffie-hellman-group-exchange parameters that guides the connected server in choosing a group. + See + <url href="https://tools.ietf.org/html/rfc4419">RFC 4419</url> + for the details. The default value is <c>{1024, 6144, 8192}</c>. + </p> </desc> - </func> - - <func> - <name>daemon(Port) -> </name> - <name>daemon(Port, Options) -> </name> - <name>daemon(HostAddress, Port, Options) -> </name> - <name>daemon(TcpSocket) -> </name> - <name>daemon(TcpSocket, Options) -> {ok, ssh_daemon_ref()} | {error, atom()}</name> - <fsummary>Starts a server listening for SSH connections - on the given port.</fsummary> - <type> - <v>Port = integer()</v> - <v>HostAddress = ip_address() | any | loopback</v> - <v>Options = [{Option, Value}]</v> - <v>Option = atom()</v> - <v>Value = term()</v> - <v>TcpSocket = port()</v> - <d>The socket is supposed to be from <seealso marker="kernel:gen_tcp#connect-3">gen_tcp:connect</seealso> or <seealso marker="kernel:gen_tcp#accept-1">gen_tcp:accept</seealso> with option <c>{active,false}</c></d> - </type> - <desc> - <p>Starts a server listening for SSH connections on the given - port. If the <c>Port</c> is 0, a random free port is selected. See - <seealso marker="#daemon_info/1">daemon_info/1</seealso> about how to find the selected port number.</p> + </datatype> - <p>Please note that by historical reasons both the <c>HostAddress</c> argument and the inet socket option - <c>ip</c> set the listening address. This is a source of possible inconsistent settings.</p> + <datatype> + <name name="connect_timeout_client_option"/> + <desc> + <p>Sets a timeout on the transport layer connect time. + For <seealso marker="kernel:gen_tcp"><c>gen_tcp</c></seealso> the time is in milli-seconds and the default + value is <c>infinity</c>. + </p> + <p>See the parameter <c>Timeout</c> in <seealso marker="#connect/4">connect/4</seealso> for + a timeout of the negotiation phase. + </p> + </desc> + </datatype> - <p>The rules for handling the two address passing options are:</p> - <list> - <item>if <c>HostAddress</c> is an IP-address, that IP-address is the listening address. - An 'ip'-option will be discarded if present.</item> + <datatype> + <name name="recv_ext_info_client_option"/> + <desc> + <p>Make the client tell the server that the client accepts extension negotiation, that is, + include <c>ext-info-c</c> in the kexinit message sent. See + <url href="https://tools.ietf.org/html/rfc8308">RFC 8308</url> + for details and <seealso marker="SSH_app#supported-ext-info">ssh(6)</seealso> + for a list of currently implemented extensions. + </p> + <p> + Default value is <c>true</c> which is compatible with other implementations not supporting ext-info. + </p> + </desc> + </datatype> - <item>if <c>HostAddress</c> is <c>loopback</c>, the listening address - is <c>loopback</c> and an loopback address will be choosen by the underlying layers. - An 'ip'-option will be discarded if present.</item> + <!--................................................................--> + <datatype_title>Daemon Options (Server Options)</datatype_title> - <item>if <c>HostAddress</c> is <c>any</c> and no 'ip'-option is present, the listening address is - <c>any</c> and the socket will listen to all addresses</item> + <datatype> + <name name="daemon_options"/> + <name name="daemon_option"/> + <desc> + <p>Options for <seealso marker="#daemon/1">daemons</seealso>. + The individual options are further explained below or by following the hyperlinks. + </p> + </desc> + </datatype> - <item>if <c>HostAddress</c> is <c>any</c> and an 'ip'-option is present, the listening address is - set to the value of the 'ip'-option</item> - </list> + + <datatype> + <name name="subsystem_daemon_option"/> + <name name="subsystem_spec"/> + <desc> + <p>Defines a subsystem in the daemon.</p> + <p>The <c>subsystem_name</c> is the name that a client requests to start with for example + <seealso marker="ssh_connection#subsystem/4">ssh_connection:subsystem/4</seealso>. + </p> + <p>The <c>channel_callback</c> is the module that implements the + <seealso marker="ssh_server_channel">ssh_server_channel</seealso> (replaces ssh_daemon_channel) + behaviour in the daemon. See the section + <seealso marker="using_ssh#usersguide_creating_a_subsystem">Creating a Subsystem</seealso> + in the User's Guide for more information and an example. + </p> + <p>If the subsystems option is not present, the value of <c>ssh_sftpd:subsystem_spec([])</c> is used. + This enables the sftp subsystem by default. + The option can be set to the empty list if you do not want the daemon to run any subsystems.</p> + </desc> + </datatype> - <p>Options:</p> - <taglist> - <tag><c><![CDATA[{inet, inet | inet6}]]></c></tag> - <item><p>IP version to use when the host address is specified as <c>any</c>.</p></item> - <tag><c><![CDATA[{subsystems, [subsystem_spec()]}]]></c></tag> + <datatype> + <name name="shell_daemon_option"/> + <name name="'shell_fun/1'"/> + <name name="'shell_fun/2'"/> + <desc> + <p>Defines the read-eval-print loop used in a daemon when a shell is requested by the client. + The default is to use the Erlang shell: <c><![CDATA[{shell, start, []}]]></c> + </p> + <p>See the option <seealso marker="#type-exec_daemon_option"><c>exec</c></seealso> + for a description of how the daemon execute exec-requests depending on + the shell- and exec-options.</p> + </desc> + </datatype> + + <datatype> + <name name="exec_daemon_option"/> + <name name="exec_spec"/> + <desc/> + </datatype> + <datatype> + <name name="exec_fun"/> + <desc/> + </datatype> + <datatype> + <name name="'exec_fun/1'"/> + <name name="'exec_fun/2'"/> + <name name="'exec_fun/3'"/> + <desc/> + </datatype> + <datatype> + <name name="exec_result"/> + <desc> + <p>This option changes how the daemon execute exec-requests from clients. The term in the return value + is formatted to a string if it is a non-string type. No trailing newline is added in the ok-case but in the + error case.</p> + <p>Error texts are returned on channel-type 1 which usually is piped to <c>stderr</c> on e.g Linux systems. + Texts from a successful execution will in similar manner be piped to <c>stdout</c>. The exit-status code + is set to 0 for success and -1 for errors. The exact results presented on the client side depends on the + client and the client's operating system. + </p> + <p>The option cooperates with the daemon-option <seealso marker="#type-shell_daemon_option"><c>shell</c></seealso> + in the following way:</p> + <taglist> + <tag>1. If the exec-option is present (the shell-option may or may not be present):</tag> <item> - <p>Provides specifications for handling of subsystems. The - "sftp" subsystem specification is retrieved by calling - <c>ssh_sftpd:subsystem_spec/1</c>. If the subsystems option is - not present, the value of - <c>[ssh_sftpd:subsystem_spec([])]</c> is used. - The option can be set to the empty list if - you do not want the daemon to run any subsystems.</p> + <p>The exec-option fun is called with the same number of parameters as the arity of the fun, + and the result is returned to the client. + </p> </item> - <tag><c><![CDATA[{shell, {Module, Function, Args} | - fun(string() = User) - > pid() | fun(string() = User, - ip_address() = PeerAddr) -> pid()}]]></c></tag> + + <tag>2. If the exec-option is absent, but a shell-option is present with the default Erlang shell:</tag> <item> - <p>Defines the read-eval-print loop used when a shell is - requested by the client. The default is to use the Erlang shell: - <c><![CDATA[{shell, start, []}]]></c></p> + <p>The default Erlang evaluator is used and the result is returned to the client.</p> </item> - <tag><c><![CDATA[{ssh_cli, {channel_callback(), - channel_init_args()} | no_cli}]]></c></tag> + + <tag>3. If the exec-option is absent, but a shell-option is present that is not the default Erlang shell:</tag> <item> - <p>Provides your own CLI implementation, that is, a channel callback - module that implements a shell and command execution. The shell - read-eval-print loop can be customized, using the - option <c>shell</c>. This means less work than implementing - an own CLI channel. If set to <c>no_cli</c>, the CLI channels - are disabled and only subsystem channels are allowed.</p> + <p>The exec-request is not evaluated and an error message is returned to the client.</p> </item> - <tag><c><![CDATA[{user_dir, string()}]]></c></tag> + + <tag>4. If neither the exec-option nor the shell-option is present:</tag> <item> - <p>Sets the user directory. That is, the directory containing - <c>ssh</c> configuration files for the user, such as - <c><![CDATA[known_hosts]]></c>, <c><![CDATA[id_rsa, - id_dsa]]></c>, and - <c><![CDATA[authorized_key]]></c>. Defaults to the - directory normally referred to as - <c><![CDATA[~/.ssh]]></c>.</p> - </item> - <tag><c><![CDATA[{system_dir, string()}]]></c></tag> - <item> - <p>Sets the system directory, containing the host key files - that identify the host keys for <c>ssh</c>. Defaults to - <c><![CDATA[/etc/ssh]]></c>. For security reasons, - this directory is normally accessible only to the root user.</p> + <p>The default Erlang evaluator is used and the result is returned to the client.</p> </item> + </taglist> + <p>If a custom CLI is installed (see the option <seealso marker="#type-ssh_cli_daemon_option"><c>ssh_cli</c></seealso>) + the rules above are replaced by thoose implied by the custom CLI. + </p> + <note> + <p>The exec-option has existed for a long time but has not previously been documented. The old + definition and behaviour are retained but obey the rules 1-4 above if conflicting. + The old and undocumented style should not be used in new programs.</p> + </note> + </desc> + </datatype> - <tag><c><![CDATA[{auth_methods, string()}]]></c></tag> - <item> - <p>Comma-separated string that determines which - authentication methods that the server is to support and - in what order they are tried. Defaults to - <c><![CDATA["publickey,keyboard-interactive,password"]]></c></p> - <p>Note that the client is free to use any order and to exclude methods.</p> - </item> - - <tag><c><![CDATA[{auth_method_kb_interactive_data, PromptTexts}]]></c> - <br/><c>where:</c> - <br/><c>PromptTexts = kb_int_tuple() | fun(Peer::{IP::tuple(),Port::integer()}, User::string(), Service::string()) -> kb_int_tuple()</c> - <br/><c>kb_int_tuple() = {Name::string(), Instruction::string(), Prompt::string(), Echo::boolean()}</c> - </tag> + <datatype> + <name name="ssh_cli_daemon_option"/> + <desc> + <p>Provides your own CLI implementation in a daemon.</p> + <p>It is a channel callback module that implements a shell + and command execution. The shell's read-eval-print loop can be customized, using the + option <seealso marker="#type-shell_daemon_option"><c>shell</c></seealso>. This means less work than implementing + an own CLI channel. If <c>ssh_cli</c> is set to <c>no_cli</c>, the CLI channels + like <seealso marker="#type-shell_daemon_option"><c>shell</c></seealso> + and <seealso marker="#type-exec_daemon_option"><c>exec</c></seealso> + are disabled and only subsystem channels are allowed.</p> + </desc> + </datatype> + + <datatype> + <name name="authentication_daemon_options"/> + <name name="prompt_texts"/> + <name name="kb_int_tuple"/> + <name name="kb_int_fun_3"/> + <name name="pwdfun_2"/> + <name name="pwdfun_4"/> + <desc> + <taglist> + <tag><c>auth_method_kb_interactive_data</c></tag> <item> - <p>Sets the text strings that the daemon sends to the client for presentation to the user when using <c>keyboar-interactive</c> authentication. If the fun/3 is used, it is called when the actual authentication occurs and may therefore return dynamic data like time, remote ip etc.</p> + <p>Sets the text strings that the daemon sends to the client for presentation to the user when + using <c>keyboard-interactive</c> authentication.</p> + <p>If the fun/3 is used, it is called when the actual authentication occurs and may therefore + return dynamic data like time, remote ip etc.</p> <p>The parameter <c>Echo</c> guides the client about need to hide the password.</p> <p>The default value is: - <c>{auth_method_kb_interactive_data, {"SSH server", "Enter password for \""++User++"\"", "password: ", false}></c></p> + <c>{auth_method_kb_interactive_data, {"SSH server", "Enter password for \""++User++"\"", "password: ", false}></c> + </p> </item> - <tag><c><![CDATA[{user_passwords, [{string() = User, - string() = Password}]}]]></c></tag> + <tag><marker id="option-user_passwords"/><c>user_passwords</c></tag> <item> - <p>Provides passwords for password authentication. The passwords - are used when someone tries to connect to the server and - public key user-authentication fails. The option provides + <p>Provides passwords for password authentication. The passwords are used when someone tries + to connect to the server and public key user-authentication fails. The option provides a list of valid usernames and the corresponding passwords. </p> </item> - <tag><c><![CDATA[{password, string()}]]></c></tag> + + <tag><marker id="option-password"/><c>password</c></tag> <item> - <p>Provides a global password that authenticates any - user. From a security perspective this option makes - the server very vulnerable.</p> + <p>Provides a global password that authenticates any user.</p> + <warning> + <p>Intended to facilitate testing.</p> + <p>From a security perspective this option makes the server very vulnerable.</p> + </warning> </item> - <tag><c><![CDATA[{preferred_algorithms, algs_list()}]]></c></tag> + <tag><marker id="option-pwdfun"/><c>pwdfun</c> with + <seealso marker="#type-pwdfun_4"><c>pwdfun_4()</c></seealso> + </tag> <item> - <p>List of algorithms to use in the algorithm negotiation. The default <c>algs_list()</c> can - be obtained from <seealso marker="#default_algorithms/0">default_algorithms/0</seealso>. + <p>Provides a function for password validation. This could used for calling an external system or handeling + passwords stored as hash values. </p> - <p>If an alg_entry() is missing in the algs_list(), the default value is used for that entry.</p> - <p>Here is an example of this option:</p> - <code> -{preferred_algorithms, - [{public_key,['ssh-rsa','ssh-dss']}, - {cipher,[{client2server,['aes128-ctr']}, - {server2client,['aes128-cbc','3des-cbc']}]}, - {mac,['hmac-sha2-256','hmac-sha1']}, - {compression,[none,zlib]} - ] -} -</code> - <p>The example specifies different algorithms in the two directions (client2server and server2client), - for cipher but specifies the same algorithms for mac and compression in both directions. - The kex (key exchange) is implicit but public_key is set explicitly.</p> - - <p>For background and more examples see the <seealso marker="configure_algos#introduction">User's Guide</seealso>.</p> + <p>This fun can also be used to make delays in authentication tries for example by calling + <seealso marker="stdlib:timer#sleep/1">timer:sleep/1</seealso>.</p> + <p>To facilitate for instance counting of failed tries, + the <c>State</c> variable could be used. This state is per connection only. The first time the pwdfun + is called for a connection, the <c>State</c> variable has the value <c>undefined</c>. + </p> + + <p>The fun should return: + </p> + <list type="bulleted"> + <item><c>true</c> if the user and password is valid</item> + <item><c>false</c> if the user or password is invalid</item> + <item><c>disconnect</c> if a SSH_MSG_DISCONNECT message should be sent immediately. It will + be followed by a close of the underlying tcp connection.</item> + <item><c>{true, NewState:any()}</c> if the user and password is valid</item> + <item><c>{false, NewState:any()}</c> if the user or password is invalid</item> + </list> - <warning> - <p>Changing the values can make a connection less secure. Do not change unless you - know exactly what you are doing. If you do not understand the values then you - are not supposed to change them.</p> - </warning> + <p>A third usage is to block login attempts from a missbehaving peer. The <c>State</c> described above + can be used for this. The return value <c>disconnect</c> is useful for this.</p> </item> - <tag><marker id="option_modify_algorithms"></marker> - <c><![CDATA[{modify_algorithms, modify_algs_list()}]]></c></tag> + <tag><c>pwdfun</c> with + <seealso marker="#type-pwdfun_2"><c>pwdfun_2()</c></seealso> + </tag> <item> - <p>Modifies the list of algorithms to use in the algorithm negotiation. The modifications are - applied after the option <c>preferred_algorithms</c> is applied (if existing)</p> - <p>The possible modifications are to:</p> - <list> - <item><p>Append or prepend supported but not enabled algorithm(s) to the list of - algorithms.</p><p>If the wanted algorithms already are in the list of algorithms, they will first - be removed and then appended or prepended. - </p> - </item> - <item><p>Remove (rm) one or more algorithms from the list of algorithms.</p></item> + <p>Provides a function for password validation. This function is called with user and password + as strings, and returns:</p> + <list type="bulleted"> + <item><c>true</c> if the user and password is valid</item> + <item><c>false</c> if the user or password is invalid</item> </list> - <p>If an unsupported algorithm is in the list, it will be silently ignored</p> - - <p>Here is an example of this option:</p> - <code> -{modify_algorithms, - [{prepend, [{kex, ['diffie-hellman-group1-sha1']}], - {rm, [{compression, [none]}]} - ] -} -</code> - <p>The example specifies that:</p> - <list> - <item><p>the old key exchange algorithm 'diffie-hellman-group1-sha1' should be - the main alternative. It will be the main alternative since it is prepened to the list</p> - </item> - <item><p>The compression algorithm none (= no compression) is removed so compression is enforced</p> - </item> - </list> - <p>For background and more examples see the <seealso marker="configure_algos#introduction">User's Guide</seealso>.</p> + <p>This variant is kept for compatibility.</p> </item> + </taglist> + </desc> + </datatype> - <tag><c><![CDATA[{dh_gex_groups, [{Size=integer(),G=integer(),P=integer()}] | {file,filename()} {ssh_moduli_file,filename()} }]]></c></tag> + <datatype> + <name name="diffie_hellman_group_exchange_daemon_option"/> + <name name="explicit_group"/> + <name name="explicit_group_file"/> + <name name="ssh_moduli_file"/> + <desc> + <taglist> + <tag><c>dh_gex_groups</c></tag> <item> <p>Defines the groups the server may choose among when diffie-hellman-group-exchange is negotiated. - See RFC 4419 for details. The three variants of this option are: + See + <url href="https://tools.ietf.org/html/rfc4419">RFC 4419</url> + for details. The three variants of this option are: </p> <taglist> <tag><c>{Size=integer(),G=integer(),P=integer()}</c></tag> @@ -704,7 +572,7 @@ </p> </item> - <tag><c><![CDATA[{dh_gex_limits,{Min=integer(),Max=integer()}}]]></c></tag> + <tag><c>dh_gex_limits</c></tag> <item> <p>Limits what a client can ask for in diffie-hellman-group-exchange. The limits will be @@ -715,57 +583,29 @@ </p> <p>If <c>MaxUsed < MinUsed</c> in a key exchange, it will fail with a disconnect. </p> - <p>See RFC 4419 for the function of the Max and Min values.</p> - </item> - - <tag><c><![CDATA[{pwdfun, fun(User::string(), Password::string(), PeerAddress::{ip_adress(),port_number()}, State::any()) -> boolean() | disconnect | {boolean(),any()} }]]></c></tag> - <item> - <p>Provides a function for password validation. This could used for calling an external system or if - passwords should be stored as a hash. The fun returns: - </p> - <list type="bulleted"> - <item><c>true</c> if the user and password is valid and</item> - <item><c>false</c> otherwise.</item> - </list> - <p>This fun can also be used to make delays in authentication tries for example by calling - <seealso marker="stdlib:timer#sleep/1">timer:sleep/1</seealso>. To facilitate counting of failed tries - the <c>State</c> variable could be used. This state is per connection only. The first time the pwdfun - is called for a connection, the <c>State</c> variable has the value <c>undefined</c>. - The pwdfun can return - in addition to the values above - a new state - as: - </p> - <list type="bulleted"> - <item><c>{true, NewState:any()}</c> if the user and password is valid or</item> - <item><c>{false, NewState:any()}</c> if the user or password is invalid</item> - </list> - <p>A third usage is to block login attempts from a missbehaving peer. The <c>State</c> described above - can be used for this. In addition to the responses above, the following return value is introduced: - </p> - <list type="bulleted"> - <item><c>disconnect</c> if the connection should be closed immediately after sending a SSH_MSG_DISCONNECT - message.</item> - </list> - </item> - - <tag><c><![CDATA[{pwdfun, fun(User::string(), Password::string()) -> boolean()}]]></c></tag> - <item> - <p>Provides a function for password validation. This function is called - with user and password as strings, and returns - <c><![CDATA[true]]></c> if the password is valid and - <c><![CDATA[false]]></c> otherwise.</p> - <p>This option (<c>{pwdfun,fun/2}</c>) is the same as a subset of the previous - (<c>{pwdfun,fun/4}</c>). It is kept for compatibility.</p> + <p>See + <url href="https://tools.ietf.org/html/rfc4419">RFC 4419</url> + for the function of the Max and Min values.</p> </item> + </taglist> + </desc> + </datatype> - <tag><c><![CDATA[{negotiation_timeout, integer()}]]></c></tag> - <item> - <p>Maximum time in milliseconds for the authentication negotiation. - Defaults to 120000 (2 minutes). If the client fails to log in within this time, - the connection is closed. - </p> - </item> + <datatype> + <name name="negotiation_timeout_daemon_option"/> + <desc> + <p>Maximum time in milliseconds for the authentication negotiation. + Defaults to 120000 ms (2 minutes). If the client fails to log in within this time, + the connection is closed. + </p> + </desc> + </datatype> - <tag><c><![CDATA[{max_sessions, pos_integer()}]]></c></tag> + <datatype> + <name name="hardening_daemon_options"/> + <desc> + <taglist> + <tag><c>max_sessions</c></tag> <item> <p>The maximum number of simultaneous sessions that are accepted at any time for this daemon. This includes sessions that are being authorized. @@ -785,7 +625,7 @@ </p> </item> - <tag><c><![CDATA[{max_channels, pos_integer()}]]></c></tag> + <tag><c>max_channels</c></tag> <item> <p>The maximum number of channels with active remote subsystem that are accepted for each connection to this daemon</p> @@ -793,8 +633,7 @@ </p> </item> - - <tag><c><![CDATA[{parallel_login, boolean()}]]></c></tag> + <tag><c>parallel_login</c></tag> <item> <p>If set to false (the default value), only one login is handled at a time. If set to true, an unlimited number of login attempts are allowed simultaneously. @@ -811,171 +650,562 @@ </warning> </item> - <tag><c><![CDATA[{minimal_remote_max_packet_size, non_negative_integer()}]]></c></tag> + <tag><c>minimal_remote_max_packet_size</c></tag> <item> - <p>The least maximum packet size that the daemon will accept in channel open requests from the client. The default value is 0. + <p>The least maximum packet size that the daemon will accept in channel open requests from the client. + The default value is 0. </p> </item> + + </taglist> + </desc> + </datatype> + + <datatype> + <name name="callbacks_daemon_options"/> + <desc> + <taglist> + <tag><c>connectfun</c></tag> + <item> + <p>Provides a fun to implement your own logging when a user authenticates to the server.</p> + </item> - <tag><c><![CDATA[{id_string, random | string()}]]></c></tag> + <tag><c>failfun</c></tag> <item> - <p>The string the daemon will present to a connecting peer initially. The default value is "Erlang/VSN" where VSN is the ssh application version number. - </p> - <p>The value <c>random</c> will cause a random string to be created at each connection attempt. This is to make it a bit more difficult for a malicious peer to find the ssh software brand and version. - </p> + <p>Provides a fun to implement your own logging when a user fails to authenticate.</p> </item> + </taglist> + </desc> + </datatype> - <tag><c><![CDATA[{send_ext_info, boolean()}]]></c></tag> - <item> - <p>Send a list of extensions to the client if the client has asked for it. See - <url href="https://tools.ietf.org/html/draft-ietf-curdle-ssh-ext-info">Draft-ietf-curdle-ssh-ext-info (work in progress)</url> for details. - </p> - <p>Currently implemented extension is sending <c>server-sig-algs</c> which is the list of the server's preferred - user's public key algorithms. - </p> - <p>Default value is <c>true</c>. - </p> - </item> + <datatype> + <name name="send_ext_info_daemon_option"/> + <desc> + <p>Make the server (daemon) tell the client that the server accepts extension negotiation, that is, + include <c>ext-info-s</c> in the kexinit message sent. See + <url href="https://tools.ietf.org/html/rfc8308">RFC 8308</url> + for details and <seealso marker="SSH_app#supported-ext-info">ssh(6)</seealso> + for a list of currently implemented extensions. + </p> + <p>Default value is <c>true</c> which is compatible with other implementations not supporting ext-info. + </p> + </desc> + </datatype> - <!--tag><c><![CDATA[{recv_ext_info, boolean()}]]></c></tag> - <item> - <p>Tell the client that the server accepts extension negotiation. See - <url href="https://tools.ietf.org/html/draft-ietf-curdle-ssh-ext-info">Draft-ietf-curdle-ssh-ext-info (work in progress)</url> for details. - </p> - <p>Default value is <c>true</c>. - </p> - </item--> - <tag><c><![CDATA[{key_cb, key_cb()}]]></c></tag> + <!--................................................................--> + <datatype_title>Options common to clients and daemons</datatype_title> + <datatype> + <name name="common_options"/> + <name name="common_option"/> + <desc><p>The options above can be used both in clients and in daemons (servers). They are further explained below.</p> + </desc> + </datatype> + + <datatype> + <name name="profile_common_option"/> + <desc> + <p>Used together with <c>ip-address</c> and <c>port</c> to + uniquely identify a ssh daemon. This can be useful in a + virtualized environment, where there can be more that one + server that has the same <c>ip-address</c> and + <c>port</c>. If this property is not explicitly set, it is + assumed that the the <c>ip-address</c> and <c>port</c> + uniquely identifies the SSH daemon. + </p> + </desc> + </datatype> + + <datatype> + <name name="max_idle_time_common_option"/> + <desc> + <p>Sets a time-out on a connection when no channels are active. Defaults to <c>infinity</c>.</p> + </desc> + </datatype> + + <datatype> + <name name="rekey_limit_common_option"/> + <name name="limit_bytes"/> + <name name="limit_time"/> + <desc> + <p>Sets the limit when rekeying is to be initiated. Both the max time and max amount of data + could be configured: + </p> + <list> + <item><c>{Minutes, Bytes}</c> initiate rekeying when any of the limits are reached.</item> + <item><c>Bytes</c> initiate rekeying when <c>Bytes</c> number of bytes are transferred, + or at latest after one hour.</item> + </list> + <p>When a rekeying is done, both the timer and the byte counter are restarted. + Defaults to one hour and one GByte.</p> + <p>If <c>Minutes</c> is set to <c>infinity</c>, no rekeying will ever occur due to that max time has passed. + Setting <c>Bytes</c> to <c>infinity</c> will inhibit rekeying after a certain amount of data has been transferred. + If the option value is set to <c>{infinity, infinity}</c>, no rekeying will be initiated. Note that rekeying initiated + by the peer will still be performed.</p> + </desc> + </datatype> + + <datatype> + <name name="key_cb_common_option"/> + <desc> + <p>Module implementing the behaviour + <seealso marker="ssh_client_key_api">ssh_client_key_api</seealso> and/or + <seealso marker="ssh_server_key_api">ssh_server_key_api</seealso>. + Can be used to + customize the handling of public keys. If callback options are provided + along with the module name, they are made available to the callback + module via the options passed to it under the key 'key_cb_private'. + </p> + <p>The <c>Opts</c> defaults to <c>[]</c> when only the <c>Module</c> is specified. + </p> + <p>The default value of this option is <c>{ssh_file, []}</c>. See also the manpage of + <seealso marker="ssh:ssh_file">ssh_file</seealso>. + </p> + <p>A call to the call-back function <c>F</c> will be</p> + <code> + Module:F(..., [{key_cb_private,Opts}|UserOptions]) + </code> + <p>where <c>...</c> are arguments to <c>F</c> as in + <seealso marker="ssh_client_key_api">ssh_client_key_api</seealso> and/or + <seealso marker="ssh_server_key_api">ssh_server_key_api</seealso>. + The <c>UserOptions</c> are the options given to + <seealso marker="ssh:ssh#connect-3">ssh:connect</seealso>, + <seealso marker="ssh:ssh#shell-1">ssh:shell</seealso> or + <seealso marker="ssh:ssh#daemon-2">ssh:daemon</seealso>. + </p> + + </desc> + </datatype> + + <datatype> + <name name="pref_public_key_algs_common_option"/> + <desc> + <p>List of user (client) public key algorithms to try to use.</p> + <p>The default value is the <c>public_key</c> entry in the list returned by + <seealso marker="#default_algorithms/0">ssh:default_algorithms/0</seealso>. + </p> + <p>If there is no public key of a specified type available, the corresponding entry is ignored. + Note that the available set is dependent on the underlying cryptolib and current user's public keys. + </p> + <p>See also the option <seealso marker="ssh_file#type-user_dir_common_option"><c>user_dir</c></seealso> + for specifying the path to the user's keys. + </p> + </desc> + </datatype> + + <datatype> + <name name="disconnectfun_common_option"/> + <desc> + <p>Provides a fun to implement your own logging when the peer disconnects.</p> + </desc> + </datatype> + + <datatype> + <name name="unexpectedfun_common_option"/> + <desc> + <p>Provides a fun to implement your own logging or other action when an unexpected message arrives. + If the fun returns <c>report</c> the usual info report is issued but if <c>skip</c> is returned no + report is generated.</p> + </desc> + </datatype> + + <datatype> + <name name="ssh_msg_debug_fun_common_option"/> + <desc> + <p>Provide a fun to implement your own logging of the SSH message SSH_MSG_DEBUG. + The last three parameters are from the message, see + <url href="https://tools.ietf.org/html/rfc4253#section-11.3">RFC 4253, section 11.3</url>. + The <seealso marker="#type-connection_ref"><c>connection_ref()</c></seealso> is the reference + to the connection on which the message arrived. + The return value from the fun is not checked. + </p> + <p>The default behaviour is ignore the message. + To get a printout for each message with <c>AlwaysDisplay = true</c>, + use for example <c>{ssh_msg_debug_fun, fun(_,true,M,_)-> io:format("DEBUG: ~p~n", [M]) end}</c></p> + </desc> + </datatype> + + <datatype> + <name name="id_string_common_option"/> + <desc> + <p>The string the daemon will present to a connecting peer initially. + The default value is "Erlang/VSN" where VSN is the ssh application version number. + </p> + <p>The value <c>random</c> will cause a random string to be created at each connection attempt. + This is to make it a bit more difficult for a malicious peer to find the ssh software brand and version. + </p> + <p>The value <c>{random, Nmin, Nmax}</c> will make a random string with at least <c>Nmin</c> characters and + at most <c>Nmax</c> characters. + </p> + </desc> + </datatype> + + <datatype> + <name name="preferred_algorithms_common_option"/> + <name name="algs_list"/> + <name name="alg_entry"/> + <name name="kex_alg"/> + <name name="pubkey_alg"/> + <name name="cipher_alg"/> + <name name="mac_alg"/> + <name name="compression_alg"/> + <name name="double_algs"/> + + <desc> + <p>List of algorithms to use in the algorithm negotiation. The default <c>algs_list()</c> can + be obtained from <seealso marker="#default_algorithms/0">default_algorithms/0</seealso>. + </p> + <p>If an alg_entry() is missing in the algs_list(), the default value is used for that entry.</p> + <p>Here is an example of this option:</p> + <code> + {preferred_algorithms, + [{public_key,['ssh-rsa','ssh-dss']}, + {cipher,[{client2server,['aes128-ctr']}, + {server2client,['aes128-cbc','3des-cbc']}]}, + {mac,['hmac-sha2-256','hmac-sha1']}, + {compression,[none,zlib]} + ] + } + </code> + <p>The example specifies different algorithms in the two directions (client2server and server2client), + for cipher but specifies the same algorithms for mac and compression in both directions. + The kex (key exchange) is implicit but public_key is set explicitly.</p> + + <p>For background and more examples see the <seealso marker="configure_algos#introduction">User's Guide</seealso>.</p> + + <p>If an algorithm name occurs more than once in a list, the behaviour is undefined. The tags in the property lists + are also assumed to occur at most one time. + </p> + + <warning> + <p>Changing the values can make a connection less secure. Do not change unless you + know exactly what you are doing. If you do not understand the values then you + are not supposed to change them.</p> + </warning> + </desc> + </datatype> + + <datatype> + <name name="modify_algorithms_common_option"/> + <name name="modify_algs_list"/> + <desc> + <p>Modifies the list of algorithms to use in the algorithm negotiation. The modifications are + applied after the option <c>preferred_algorithms</c> (if existing) is applied.</p> + <p>The algoritm for modifications works like this:</p> + <list> <item> - <p>Module implementing the behaviour <seealso - marker="ssh_server_key_api">ssh_server_key_api</seealso>. Can be used to - customize the handling of public keys. If callback options are provided - along with the module name, they are made available to the callback - module via the options passed to it under the key 'key_cb_private'. + <p>Input is the <c>modify_algs_list()</c> and a set of algorithms <c>A</c> + obtained from the <c>preferred_algorithms</c> option if existing, or else from the + <seealso marker="ssh#default_algorithms-0">ssh:default_algorithms/0</seealso>. </p> </item> - - <tag><c>{profile, atom()}</c></tag> <item> - <p>Used together with <c>ip-address</c> and <c>port</c> to - uniquely identify a ssh daemon. This can be useful in a - virtualized environment, where there can be more that one - server that has the same <c>ip-address</c> and - <c>port</c>. If this property is not explicitly set, it is - assumed that the the <c>ip-address</c> and <c>port</c> - uniquely identifies the SSH daemon. - </p> + <p>The head of the <c>modify_algs_list()</c> modifies <c>A</c> giving the result <c>A'</c>.</p> + <p>The possible modifications are:</p> + <list> + <item> + <p>Append or prepend supported but not enabled algorithm(s) to the list of + algorithms. If the wanted algorithms already are in <c>A</c> they will first + be removed and then appended or prepended, + </p> + </item> + <item> + <p>Remove (rm) one or more algorithms from <c>A</c>. + </p> + </item> + </list> </item> - - <tag><c><![CDATA[{fd, file_descriptor()}]]></c></tag> - <item> - <p>Allows an existing file-descriptor to be used - (passed on to the transport protocol).</p></item> - <tag><c><![CDATA[{failfun, fun(User::string(), - PeerAddress::ip_address(), Reason::term()) -> _}]]></c></tag> <item> - <p>Provides a fun to implement your own logging when a user fails to authenticate.</p> + <p>Repeat the modification step with the tail of <c>modify_algs_list()</c> and the resulting + <c>A'</c>. + </p> </item> - <tag><c><![CDATA[{connectfun, fun(User::string(), PeerAddress::ip_address(), - Method::string()) ->_}]]></c></tag> - <item> - <p>Provides a fun to implement your own logging when a user authenticates to the server.</p> + </list> + <p>If an unsupported algorithm is in the <c>modify_algs_list()</c>, it will be silently ignored</p> + <p>If there are more than one modify_algorithms options, the result is undefined.</p> + <p>Here is an example of this option:</p> + <code> + {modify_algorithms, + [{prepend, [{kex, ['diffie-hellman-group1-sha1']}], + {rm, [{compression, [none]}]} + ] + } + </code> + <p>The example specifies that:</p> + <list> + <item><p>the old key exchange algorithm 'diffie-hellman-group1-sha1' should be + the main alternative. It will be the main alternative since it is prepened to the list</p> </item> - <tag><c><![CDATA[{disconnectfun, fun(Reason:term()) -> _}]]></c></tag> - <item> - <p>Provides a fun to implement your own logging when a user disconnects from the server.</p> + <item><p>The compression algorithm none (= no compression) is removed so compression is enforced</p> </item> + </list> + <p>For background and more examples see the <seealso marker="configure_algos#introduction">User's Guide</seealso>.</p> + </desc> + </datatype> - <tag><c><![CDATA[{unexpectedfun, fun(Message:term(), Peer) -> report | skip }]]></c></tag> - <item> - <p>Provides a fun to implement your own logging or other action when an unexpected message arrives. - If the fun returns <c>report</c> the usual info report is issued but if <c>skip</c> is returned no - report is generated.</p> - <p><c>Peer</c> is in the format of <c>{Host,Port}</c>.</p> - </item> - <tag><c><![CDATA[{idle_time, integer()}]]></c></tag> - <item> - <p>Sets a time-out on a connection when no channels are active. - Defaults to <c>infinity</c>.</p> - </item> + <datatype> + <name name="inet_common_option"/> + <desc> + <p>IP version to use when the host address is specified as <c>any</c>.</p> + </desc> + </datatype> - <tag><c><![CDATA[{ssh_msg_debug_fun, fun(ConnectionRef::ssh_connection_ref(), AlwaysDisplay::boolean(), Msg::binary(), LanguageTag::binary()) -> _}]]></c></tag> - <item> - <p>Provide a fun to implement your own logging of the SSH message SSH_MSG_DEBUG. The last three parameters are from the message, see RFC4253, section 11.3. The <c>ConnectionRef</c> is the reference to the connection on which the message arrived. The return value from the fun is not checked.</p> - <p>The default behaviour is ignore the message. - To get a printout for each message with <c>AlwaysDisplay = true</c>, use for example <c>{ssh_msg_debug_fun, fun(_,true,M,_)-> io:format("DEBUG: ~p~n", [M]) end}</c></p> - </item> + <datatype> + <name name="auth_methods_common_option"/> + <desc> + <p>Comma-separated string that determines which authentication methods that the client shall + support and in which order they are tried. Defaults to <c>"publickey,keyboard-interactive,password"</c> + </p> + <p>Note that the client is free to use any order and to exclude methods. + </p> + </desc> + </datatype> - </taglist> - </desc> - </func> + <datatype> + <name name="fd_common_option"/> + <desc> + <p>Allows an existing file-descriptor to be used (passed on to the transport protocol).</p> + </desc> + </datatype> - <func> - <name>daemon_info(Daemon) -> {ok, [DaemonInfo]} | {error,Error}</name> - <fsummary>Get info about a daemon</fsummary> - <type> - <v>DaemonInfo = {port,Port::pos_integer()} | {listen_address, any|ip_address()} | {profile,atom()}</v> - <v>Port = integer()</v> - <v>Error = bad_daemon_ref</v> - </type> + <!--................................................................--> + <datatype_title>Other data types</datatype_title> + + <datatype> + <name name="host"/> <desc> - <p>Returns a key-value list with information about the daemon. For now, only the listening port is returned. This is intended for the case the daemon is started with the port set to 0.</p> </desc> + </datatype> + + <datatype> + <name name="ip_port"/> + <desc> + </desc> + </datatype> + + <datatype> + <name name="mod_args"/> + <desc> + </desc> + </datatype> + + <datatype> + <name name="mod_fun_args"/> + <desc> + </desc> + </datatype> + + <datatype> + <name name="open_socket"/> + <desc> + <p>The socket is supposed to be result of a <seealso marker="kernel:gen_tcp#connect-3">gen_tcp:connect</seealso> + or a <seealso marker="kernel:gen_tcp#accept-1">gen_tcp:accept</seealso>. The socket must be in passive + mode (that is, opened with the option <c>{active,false})</c>. + </p> + </desc> + </datatype> + + <datatype> + <name name="daemon_ref"/> + <desc> + <p>Opaque data type representing a daemon.</p> + <p>Returned by the functions <seealso marker="ssh#daemon-1"><c>daemon/1,2,3</c></seealso>.</p> + </desc> + </datatype> + + <datatype> + <name>connection_ref()</name> + <desc> + <p>Opaque data type representing a connection between a client and a server (daemon).</p> + <p>Returned by the functions + <seealso marker="ssh#connect-3"><c>connect/2,3,4</c></seealso> and + <seealso marker="ssh_sftp#start_channel-2"><c>ssh_sftp:start_channel/2,3</c></seealso>. + </p> + </desc> + </datatype> + + <datatype> + <name name="channel_id"/> + <desc> + <p>Opaque data type representing a channel inside a connection.</p> + <p>Returned by the functions + <seealso marker="ssh_connection#session_channel/2">ssh_connection:session_channel/2,4</seealso>. + </p> + </desc> + </datatype> + + + <datatype> + <name>opaque_client_options</name> + <name>opaque_daemon_options</name> + <name>opaque_common_options</name> + <desc> + <marker id="type-opaque_client_options"/> + <marker id="type-opaque_daemon_options"/> + <marker id="type-opaque_common_options"/> + <p>Opaque types that define experimental options that are not to be used in products.</p> + </desc> + </datatype> + </datatypes> + +<!-- + ================================================================ + = Function definitions = + ================================================================ +--> + + <funcs> + +<!-- CLOSE/1 --> + <func> + <name name="close" arity="1" since=""/> + <fsummary>Closes an SSH connection.</fsummary> + <desc><p>Closes an SSH connection.</p></desc> </func> + +<!-- CONNECT/2 etc --> + <func> + <name since="">connect(Host, Port, Options) -> Result </name> + <name since="">connect(Host, Port, Options, NegotiationTimeout) -> Result </name> + <name since="OTP 19.0">connect(TcpSocket, Options) -> Result</name> + <name since="">connect(TcpSocket, Options, NegotiationTimeout) -> Result</name> + <fsummary>Connects to an SSH server.</fsummary> + <type> + <v>Host = <seealso marker="#type-host">host()</seealso></v> + <v>Port = <seealso marker="kernel:inet#type-port_number">inet:port_number()</seealso></v> + <v>Options = <seealso marker="#type-client_options">client_options()</seealso></v> + <v>TcpSocket = <seealso marker="#type-open_socket">open_socket()</seealso></v> + <v>NegotiationTimeout = timeout()</v> + <v>Result = {ok, <seealso marker="#type-connection_ref">connection_ref()</seealso>} | {error, term()}</v> + </type> + <desc> + <p>Connects to an SSH server at the <c>Host</c> on <c>Port</c>. + </p> + <p>As an alternative, an already open TCP socket could be passed to the function in <c>TcpSocket</c>. + The SSH initiation and negotiation will be initiated on that one with the SSH that should be at the + other end. + </p> + <p>No channel is started. This is done by calling <seealso marker="ssh_connection#session_channel/2"> + ssh_connection:session_channel/[2, 4]</seealso>. + </p> + <p>The <c>NegotiationTimeout</c> is in milli-seconds. The default value is <c>infinity</c>. + For connection timeout, use the option + <seealso marker="#type-connect_timeout_client_option"><c>connect_timeout</c></seealso>. + </p> + </desc> + </func> + +<!-- CONNECTION_INFO/1, CONNECTION_INFO/2 --> + <func> + <name name="connection_info" arity="2" since=""/> + <fsummary>Retrieves information about a connection.</fsummary> + <desc> + <p>Retrieves information about a connection. The list <c>Keys</c> defines which information that + is returned.</p> + </desc> + </func> + +<!-- DEAMON/1,2,3 --> + <func> + <name since="">daemon(Port | TcpSocket) -> Result</name> + <name since="">daemon(Port | TcpSocket, Options) -> Result</name> + <name since="">daemon(HostAddress, Port, Options) -> Result</name> + <fsummary>Starts a server listening for SSH connections.</fsummary> + <type> + <v>Port = integer()</v> + <v>TcpSocket = <seealso marker="#type-open_socket">open_socket()</seealso></v> + <v>Options = <seealso marker="#type-daemon_options">daemon_options()</seealso></v> + <v>HostAddress = <seealso marker="#type-host">host()</seealso> | any</v> + <v>Result = {ok, <seealso marker="#type-daemon_ref">daemon_ref()</seealso>} | {error, atom()}</v> + </type> + <desc> + <p>Starts a server listening for SSH connections on the given port. If the <c>Port</c> is 0, + a random free port is selected. See <seealso marker="#daemon_info/1">daemon_info/1</seealso> + about how to find the selected port number. + </p> + <p>As an alternative, an already open TCP socket could be passed to the function in <c>TcpSocket</c>. + The SSH initiation and negotiation will be initiated on that one when an SSH starts at the other end + of the TCP socket. + </p> + <p>For a description of the options, see <seealso marker="#type-daemon_options">Daemon Options</seealso>. + </p> + <p>Please note that by historical reasons both the <c>HostAddress</c> argument and the + <seealso marker="kernel:gen_tcp#type-connect_option">gen_tcp connect_option() <c>{ip,Address}</c></seealso> + set the listening address. This is a source of possible inconsistent settings. + </p> + <p>The rules for handling the two address passing options are:</p> + <list> + <item>if <c>HostAddress</c> is an IP-address, that IP-address is the listening address. + An 'ip'-option will be discarded if present.</item> + + <item>if <c>HostAddress</c> is the atom <c>loopback</c>, the listening address + is <c>loopback</c> and an loopback address will be choosen by the underlying layers. + An 'ip'-option will be discarded if present.</item> + + <item>if <c>HostAddress</c> is the atom <c>any</c> and no 'ip'-option is present, the listening address is + <c>any</c> and the socket will listen to all addresses</item> + + <item>if <c>HostAddress</c> is <c>any</c> and an 'ip'-option is present, the listening address is + set to the value of the 'ip'-option</item> + </list> + </desc> + </func> +<!-- DAEMON_INFO/1 --> + <func> + <name name="daemon_info" arity="1" since="OTP 19.0"/> + <fsummary>Get info about a daemon</fsummary> + <desc> + <p>Returns a key-value list with information about the daemon.</p> + </desc> + </func> + + +<!-- DEFAULT_ALGORITHMS/0 --> <func> - <name>default_algorithms() -> algs_list()</name> + <name name="default_algorithms" arity="0" since="OTP 18.0"/> <fsummary>Get a list declaring the supported algorithms</fsummary> <desc> <p>Returns a key-value list, where the keys are the different types of algorithms and the values are the - algorithms themselves. An example:</p> - <code> -20> ssh:default_algorithms(). -[{kex,['diffie-hellman-group1-sha1']}, - {public_key,['ssh-rsa','ssh-dss']}, - {cipher,[{client2server,['aes128-ctr','aes128-cbc','3des-cbc']}, - {server2client,['aes128-ctr','aes128-cbc','3des-cbc']}]}, - {mac,[{client2server,['hmac-sha2-256','hmac-sha1']}, - {server2client,['hmac-sha2-256','hmac-sha1']}]}, - {compression,[{client2server,[none,zlib]}, - {server2client,[none,zlib]}]}] -21> -</code> + algorithms themselves.</p> + <p>See the <seealso marker="configure_algos#example_default_algorithms">User's Guide</seealso> for + an example.</p> </desc> </func> +<!-- SHELL/1,2,3 --> <func> - <name>shell(Host) -> </name> - <name>shell(Host, Option) -> </name> - <name>shell(Host, Port, Option) -> </name> - <name>shell(TcpSocket) -> _</name> - <fsummary>Starts an interactive shell over an SSH server.</fsummary> + <name since="">shell(Host | TcpSocket) -> Result </name> + <name since="">shell(Host | TcpSocket, Options) -> Result </name> + <name since="">shell(Host, Port, Options) -> Result </name> + <fsummary>Starts an interactive shell on a remote SSH server.</fsummary> <type> - <v>Host = string()</v> - <v>Port = integer()</v> - <v>Options - see ssh:connect/3</v> - <v>TcpSocket = port()</v> - <d>The socket is supposed to be from <seealso marker="kernel:gen_tcp#connect-3">gen_tcp:connect</seealso> or <seealso marker="kernel:gen_tcp#accept-1">gen_tcp:accept</seealso> with option <c>{active,false}</c></d> + <v>Host = <seealso marker="#type-host">host()</seealso></v> + <v>TcpSocket = <seealso marker="#type-open_socket">open_socket()</seealso></v> + <v>Port = <seealso marker="kernel:inet#type-port_number">inet:port_number()</seealso></v> + <v>Options = <seealso marker="#type-client_options">client_options()</seealso></v> + <v>Result = ok | {error, Reason::term()}</v> </type> <desc> - <p>Starts an interactive shell over an SSH server on the - given <c>Host</c>. The function waits for user input, - and does not return until the remote shell is ended (that is, + <p>Connects to an SSH server at <c>Host</c> and <c>Port</c> (defaults to 22) and starts an + interactive shell on that remote host. + </p> + <p>As an alternative, an already open TCP socket could be passed to the function in <c>TcpSocket</c>. + The SSH initiation and negotiation will be initiated on that one and finaly a shell will be started + on the host at the other end of the TCP socket. + </p> + <p>For a description of the options, see <seealso marker="#type-client_options">Client Options</seealso>.</p> + <p>The function waits for user input, and does not return until the remote shell is ended (that is, exit from the shell). </p> </desc> </func> <func> - <name>start() -> </name> - <name>start(Type) -> ok | {error, Reason}</name> + <name name="start" arity="0" since=""/> + <name name="start" arity="1" since=""/> <fsummary>Starts the SSH application.</fsummary> - <type> - <v>Type = permanent | transient | temporary</v> - <v>Reason = term() </v> - </type> <desc> <p>Utility function that starts the applications <c>crypto</c>, <c>public_key</c>, and <c>ssh</c>. Default type is <c>temporary</c>. @@ -985,11 +1215,8 @@ </func> <func> - <name>stop() -> ok | {error, Reason}</name> + <name name="stop" arity="0" since=""/> <fsummary>Stops the <c>ssh</c> application.</fsummary> - <type> - <v>Reason = term()</v> - </type> <desc> <p>Stops the <c>ssh</c> application. For more information, see the <seealso marker="kernel:application">application(3)</seealso> @@ -998,34 +1225,22 @@ </func> <func> - <name>stop_daemon(DaemonRef) -> </name> - <name>stop_daemon(Address, Port) -> ok </name> - <fsummary>Stops the listener and all connections started by - the listener.</fsummary> - <type> - <v>DaemonRef = ssh_daemon_ref()</v> - <v>Address = ip_address()</v> - <v>Port = integer()</v> - </type> + <name name="stop_daemon" arity="1" since=""/> + <name name="stop_daemon" arity="2" since=""/> + <name name="stop_daemon" arity="3" since="OTP 21.0"/> + <fsummary>Stops the listener and all connections started by the listener.</fsummary> <desc> - <p>Stops the listener and all connections started by - the listener.</p> + <p>Stops the listener and all connections started by the listener.</p> </desc> </func> <func> - <name>stop_listener(DaemonRef) -> </name> - <name>stop_listener(Address, Port) -> ok </name> - <fsummary>Stops the listener, but leaves existing connections started - by the listener operational.</fsummary> - <type> - <v>DaemonRef = ssh_daemon_ref()</v> - <v>Address = ip_address()</v> - <v>Port = integer()</v> - </type> + <name name="stop_listener" arity="1" since=""/> + <name name="stop_listener" arity="2" since=""/> + <name name="stop_listener" arity="3" since="OTP 21.0"/> + <fsummary>Stops the listener, but leaves existing connections started by the listener operational.</fsummary> <desc> - <p>Stops the listener, but leaves existing connections started - by the listener operational.</p> + <p>Stops the listener, but leaves existing connections started by the listener operational.</p> </desc> </func> diff --git a/lib/ssh/doc/src/ssh_app.xml b/lib/ssh/doc/src/ssh_app.xml index 1cbbdfcf38..0c22a50c3f 100644 --- a/lib/ssh/doc/src/ssh_app.xml +++ b/lib/ssh/doc/src/ssh_app.xml @@ -4,7 +4,7 @@ <appref> <header> <copyright> - <year>2012</year><year>2017</year> + <year>2012</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -74,13 +74,18 @@ <c>id_ecdsa_key</c>, <c>known_hosts</c>, and <c>authorized_keys</c> in ~/.ssh, and for the host key files in <c>/etc/ssh</c>. These locations can be changed - by the options <c>user_dir</c> and <c>system_dir</c>. + by the options + <seealso marker="ssh_file#type-user_dir_common_option"><c>user_dir</c></seealso> and + <seealso marker="ssh_file#type-system_dir_daemon_option"><c>system_dir</c></seealso>. </p> <p>Public key handling can also be customized through a callback module that implements the behaviors <seealso marker="ssh_client_key_api">ssh_client_key_api</seealso> and <seealso marker="ssh_server_key_api">ssh_server_key_api</seealso>. </p> + <p>See also the default callback module documentation in + <seealso marker="ssh_file">ssh_file</seealso>. + </p> </section> <section> @@ -130,39 +135,52 @@ For the list on a particular installation, use the command <seealso marker="ssh:ssh#default_algorithms/0">ssh:default_algorithms/0</seealso>. The user may override the default algorithm configuration both on the server side and the client side. - See the option <c>preferred_algorithms</c> in the <seealso marker="ssh:ssh#daemon/1">ssh:daemon/1,2,3</seealso> and + See the options + <seealso marker="ssh:ssh#type-preferred_algorithms_common_option">preferred_algorithms</seealso> + and + <seealso marker="ssh:ssh#type-modify_algorithms_common_option">modify_algorithms</seealso> + in the <seealso marker="ssh:ssh#daemon/1">ssh:daemon/1,2,3</seealso> and <seealso marker="ssh:ssh#connect/3">ssh:connect/3,4</seealso> functions. </p> - <p>Supported algorithms are:</p> + <p>Supported algorithms are (in the default order):</p> <marker id="supported_algos"></marker> <taglist> <tag>Key exchange algorithms</tag> <item> <list type="bulleted"> - <item>ecdh-sha2-nistp256</item> <item>ecdh-sha2-nistp384</item> <item>ecdh-sha2-nistp521</item> - <item>diffie-hellman-group-exchange-sha1</item> + <item>ecdh-sha2-nistp256</item> <item>diffie-hellman-group-exchange-sha256</item> - <item>diffie-hellman-group14-sha1</item> - <item>diffie-hellman-group14-sha256</item> <item>diffie-hellman-group16-sha512</item> <item>diffie-hellman-group18-sha512</item> - <item>(diffie-hellman-group1-sha1, retired: can be enabled with the <c>preferred_algorithms</c> option)</item> + <item>diffie-hellman-group14-sha256</item> + <item>curve25519-sha256</item> + <item>[email protected]</item> + <item>curve448-sha512</item> + <item>diffie-hellman-group14-sha1</item> + <item>diffie-hellman-group-exchange-sha1</item> + <item>(diffie-hellman-group1-sha1, retired: It can be enabled with the + <seealso marker="ssh:ssh#type-preferred_algorithms_common_option">preferred_algorithms</seealso> + or + <seealso marker="ssh:ssh#type-modify_algorithms_common_option">modify_algorithms</seealso> + options)</item> </list> </item> <tag>Public key algorithms</tag> <item> <list type="bulleted"> - <item>ecdsa-sha2-nistp256</item> <item>ecdsa-sha2-nistp384</item> <item>ecdsa-sha2-nistp521</item> + <item>ecdsa-sha2-nistp256</item> + <item>ssh-ed25519</item> + <item>ssh-ed448</item> <item>ssh-rsa</item> - <item>ssh-dss</item> <item>rsa-sha2-256</item> <item>rsa-sha2-512</item> + <item>ssh-dss</item> </list> </item> @@ -178,11 +196,12 @@ <tag>Encryption algorithms (ciphers)</tag> <item> <list type="bulleted"> - <item>[email protected]</item> + <item>[email protected]</item> <item>[email protected]</item> - <item>aes128-ctr</item> - <item>aes192-ctr</item> <item>aes256-ctr</item> + <item>aes192-ctr</item> + <item>[email protected]</item> + <item>aes128-ctr</item> <item>aes128-cbc</item> <item>3des-cbc</item> <item>(AEAD_AES_128_GCM, not enabled per default)</item> @@ -241,7 +260,11 @@ <item><url href="https://tools.ietf.org/html/rfc4253">RFC 4253</url>, The Secure Shell (SSH) Transport Layer Protocol. <p>Except</p> <list type="bulleted"> - <item>8.1. diffie-hellman-group1-sha1. Disabled by default, can be enabled with the <c>preferred_algorithms</c> option.</item> + <item>8.1. diffie-hellman-group1-sha1. Disabled by default, can be enabled with the + <seealso marker="ssh:ssh#type-preferred_algorithms_common_option">preferred_algorithms</seealso> + or + <seealso marker="ssh:ssh#type-modify_algorithms_common_option">modify_algorithms</seealso> + options.</item> </list> <p/> </item> @@ -280,7 +303,10 @@ <p><marker id="rfc5647_note"/>There is an ambiguity in the synchronized selection of cipher and mac algorithm. This is resolved by OpenSSH in the ciphers [email protected] and [email protected] which are implemented. If the explicit ciphers and macs AEAD_AES_128_GCM or AEAD_AES_256_GCM are needed, - they could be enabled with the option preferred_algorithms. + they could be enabled with the options + <seealso marker="ssh:ssh#type-preferred_algorithms_common_option">preferred_algorithms</seealso> + or + <seealso marker="ssh:ssh#type-modify_algorithms_common_option">modify_algorithms</seealso>. </p> <warning> <p> @@ -322,18 +348,27 @@ <p>Deviations:</p> <list type="bulleted"> <item>The <c>diffie-hellman-group1-sha1</c> is not enabled by default, but is still supported and can be enabled - with the option <c>preferred-algorithms</c></item> + with the options + <seealso marker="ssh:ssh#type-preferred_algorithms_common_option">preferred_algorithms</seealso> + or + <seealso marker="ssh:ssh#type-modify_algorithms_common_option">modify_algorithms</seealso>. + </item> <item>The questionable sha1-based algorithms <c>diffie-hellman-group-exchange-sha1</c> and <c>diffie-hellman-group14-sha1</c> are still enabled by default for compatibility with ancient clients and servers. - They can be disabled with the option <c>preferred-algorithms</c></item> + They can be disabled with the options + <seealso marker="ssh:ssh#type-preferred_algorithms_common_option">preferred_algorithms</seealso> + or + <seealso marker="ssh:ssh#type-modify_algorithms_common_option">modify_algorithms</seealso>. + They will be disabled by default when the draft is turned into an RFC.</item> </list> <p/> </item> - <item><url href="https://tools.ietf.org/html/draft-ietf-curdle-rsa-sha2">Draft-ietf-curdle-rsa-sha2 (work in progress)</url>, Use of RSA Keys with SHA-2 256 and 512 in Secure Shell (SSH). + <item><url href="https://tools.ietf.org/html/rfc8332">RFC 8332</url>, Use of RSA Keys with SHA-256 and SHA-512 in the Secure Shell (SSH) Protocol. </item> - <item><url href="https://tools.ietf.org/html/draft-ietf-curdle-ssh-ext-info">Draft-ietf-curdle-ssh-ext-info (work in progress)</url>, Extension Negotiation in Secure Shell (SSH). + <item><marker id="supported-ext-info"/> + <url href="https://tools.ietf.org/html/rfc8308">RFC 8308</url>, Extension Negotiation in the Secure Shell (SSH) Protocol. <p>Implemented are:</p> <list type="bulleted"> <item>The Extension Negotiation Mechanism</item> @@ -341,7 +376,15 @@ </list> <p/> </item> - + + <item> + <url href="https://tools.ietf.org/html/draft-ietf-curdle-ssh-curves">Secure Shell (SSH) Key Exchange Method using Curve25519 and Curve448 (work in progress)</url> + </item> + + <item> + <url href="https://tools.ietf.org/html/draft-ietf-curdle-ssh-ed25519-ed448">Ed25519 and Ed448 public key algorithms for the Secure Shell (SSH) protocol (work in progress)</url> + </item> + </list> </section> diff --git a/lib/ssh/doc/src/ssh_channel.xml b/lib/ssh/doc/src/ssh_client_channel.xml index 7b598494f7..cd28b95fd3 100644 --- a/lib/ssh/doc/src/ssh_channel.xml +++ b/lib/ssh/doc/src/ssh_client_channel.xml @@ -5,7 +5,7 @@ <header> <copyright> <year>2009</year> - <year>2016</year> + <year>2018</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> @@ -23,21 +23,27 @@ The Initial Developer of the Original Code is Ericsson AB. </legalnotice> - <title>ssh_channel</title> + <title>ssh_client_channel</title> <prepared></prepared> <docno></docno> <date></date> <rev></rev> </header> - <module>ssh_channel</module> - <modulesummary>-behaviour(ssh_channel). + <module since="OTP 21.0">ssh_client_channel</module> + <modulesummary>-behaviour(ssh_client_channel). (Replaces ssh_channel) </modulesummary> <description> + <note> + <p>This module replaces ssh_channel.</p> + <p>The old module is still available for compatibility, but should not be used for new programs. + The old module will not be maintained except for some error corrections + </p> + </note> <p>SSH services (clients and servers) are implemented as channels that are multiplexed over an SSH connection and communicates over the <url href="http://www.ietf.org/rfc/rfc4254.txt"> SSH Connection Protocol</url>. This module provides a callback API - that takes care of generic channel aspects, such as flow control + that takes care of generic channel aspects for clients, such as flow control and close messages. It lets the callback functions take care of the service (application) specific parts. This behavior also ensures that the channel process honors the principal of an OTP-process so @@ -46,50 +52,28 @@ the <c>ssh</c> applications supervisor tree. </p> - <note><p>When implementing an <c>ssh</c> subsystem, use - <c>-behaviour(ssh_daemon_channel)</c> instead of <c>-behaviour(ssh_channel)</c>. - The reason is that the only relevant callback functions for subsystems are - <c>init/1</c>, <c>handle_ssh_msg/2</c>, <c>handle_msg/2</c>, and <c>terminate/2</c>. - So, the <c>ssh_daemon_channel</c> behaviour is a limited version of the - <c>ssh_channel</c> behaviour. - </p></note> - </description> + <note><p>When implementing a <c>ssh</c> subsystem for daemons, use + <seealso marker="ssh_server_channel">-behaviour(ssh_server_channel)</seealso> (Replaces ssh_daemon_channel) + instead. + </p> + </note> - <section> - <title>DATA TYPES</title> + <dont> + <p>Functions in this module are not supposed to be called outside a module implementing this + behaviour! + </p> + </dont> - <p>Type definitions that are used more than once in this module, - or abstractions to indicate the intended use of the data - type, or both:</p> - - <taglist> - <tag><c>boolean() =</c></tag> - <item><p><c>true | false</c></p></item> - <tag><c>string() =</c></tag> - <item><p>list of ASCII characters</p></item> - <tag><c>timeout() =</c></tag> - <item><p><c>infinity | integer()</c> in milliseconds</p></item> - <tag><c>ssh_connection_ref() =</c></tag> - <item><p>opaque() -as returned by - <c>ssh:connect/3</c> or sent to an SSH channel process</p></item> - <tag><c>ssh_channel_id() =</c></tag> - <item><p><c>integer()</c></p></item> - <tag><c>ssh_data_type_code() =</c></tag> - <item><p><c>1</c> ("stderr") | <c>0</c> ("normal") are - the valid values, - see <url href="http://www.ietf.org/rfc/rfc4254.txt">RFC 4254</url> - Section 5.2</p></item> - </taglist> - </section> + </description> <funcs> <func> - <name>call(ChannelRef, Msg) -></name> - <name>call(ChannelRef, Msg, Timeout) -> Reply | {error, Reason}</name> + <name since="OTP 21.0">call(ChannelRef, Msg) -></name> + <name since="OTP 21.0">call(ChannelRef, Msg, Timeout) -> Reply | {error, Reason}</name> <fsummary>Makes a synchronous call to a channel.</fsummary> <type> <v>ChannelRef = pid() </v> - <d>As returned by <seealso marker = "#start_link-4">ssh_channel:start_link/4</seealso></d> + <d>As returned by <seealso marker = "#start_link-4">start_link/4</seealso></d> <v>Msg = term()</v> <v>Timeout = timeout()</v> <v>Reply = term()</v> @@ -108,12 +92,12 @@ </func> <func> - <name>cast(ChannelRef, Msg) -> ok </name> + <name since="OTP 21.0">cast(ChannelRef, Msg) -> ok </name> <fsummary>Sends an asynchronous message to the channel ChannelRef and returns ok.</fsummary> <type> <v>ChannelRef = pid()</v> - <d>As returned by <seealso marker = "#start_link-4">ssh_channel:start_link/4</seealso></d> + <d>As returned by <seealso marker = "#start_link-4">start_link/4</seealso></d> <v>Msg = term()</v> </type> <desc> @@ -126,29 +110,29 @@ </desc> </func> - <func> - <name>enter_loop(State) -> _ </name> - <fsummary>Makes an existing process an ssh_channel process.</fsummary> + <func> + <name since="OTP 21.0">enter_loop(State) -> _ </name> + <fsummary>Makes an existing process an ssh_client_channel (replaces ssh_channel) process.</fsummary> <type> <v>State = term()</v> - <d>as returned by <seealso marker = "#init-1">ssh_channel:init/1</seealso></d> + <d>as returned by <seealso marker = "#init-1">init/1</seealso></d> </type> <desc> - <p>Makes an existing process an <c>ssh_channel</c> + <p>Makes an existing process an <c>ssh_client_channel</c> (replaces ssh_channel) process. Does not return, instead the calling process - enters the <c>ssh_channel</c> process receive loop and become an - <c>ssh_channel process</c>. The process must have been started using + enters the <c>ssh_client_channel</c> (replaces ssh_channel) process receive loop and become an + <c>ssh_client_channel</c> process. The process must have been started using one of the start functions in <c>proc_lib</c>, see the <seealso marker="stdlib:proc_lib">proc_lib(3)</seealso> manual page in STDLIB. The user is responsible for any initialization of the process - and must call <seealso marker = "#init-1">ssh_channel:init/1</seealso>. + and must call <seealso marker = "#init-1">init/1</seealso>. </p> </desc> </func> <func> - <name>init(Options) -> {ok, State} | {ok, State, Timeout} | {stop, Reason} </name> - <fsummary>Initiates an <c>ssh_channel</c> process.</fsummary> + <name since="OTP 21.0">init(Options) -> {ok, State} | {ok, State, Timeout} | {stop, Reason} </name> + <fsummary>Initiates an <c>ssh_client_channel</c> process.</fsummary> <type> <v>Options = [{Option, Value}]</v> <v>State = term()</v> @@ -160,18 +144,21 @@ The following options must be present: </p> <taglist> - <tag><c><![CDATA[{channel_cb, atom()}]]></c></tag> + <tag><c>{channel_cb, atom()}</c></tag> <item><p>The module that implements the channel behaviour.</p></item> - <tag><c><![CDATA[{init_args(), list()}]]></c></tag> + <tag><c>{init_args(), list()}</c></tag> <item><p>The list of arguments to the <c>init</c> function of the callback module.</p></item> - <tag><c><![CDATA[{cm, connection_ref()}]]></c></tag> - <item><p>Reference to the <c>ssh</c> connection as returned by <seealso - marker="ssh#connect-3">ssh:connect/3</seealso></p></item> + <tag><c>{cm, ssh:connection_ref()}</c></tag> + <item><p>Reference to the <c>ssh</c> connection as returned by + <seealso marker="ssh#connect-3">ssh:connect/3</seealso>. + </p></item> - <tag><c><![CDATA[{channel_id, channel_id()}]]></c></tag> - <item><p>Id of the <c>ssh</c> channel.</p></item> + <tag><c>{channel_id, ssh:channel_id()}</c></tag> + <item><p>Id of the <c>ssh</c> channel as returned by + <seealso marker="ssh_connection#session_channel/2">ssh_connection:session_channel/2,4</seealso>. + </p></item> </taglist> @@ -179,14 +166,14 @@ user. The user only needs to call if the channel process needs to be started with help of <c>proc_lib</c> instead of calling - <c>ssh_channel:start/4</c> or - <c>ssh_channel:start_link/4</c>.</p> + <c>start/4</c> or + <c>start_link/4</c>.</p> </note> </desc> </func> <func> - <name>reply(Client, Reply) -> _</name> + <name since="OTP 21.0">reply(Client, Reply) -> _</name> <fsummary>Sends a reply to a client.</fsummary> <type> <v>Client = opaque()</v> @@ -201,26 +188,31 @@ the callback function <c>handle_call/3</c>. <c>Reply</c> is an arbitrary term, which is given back to the client as the return value of - <seealso marker="#call-2">ssh_channel:call/[2,3].</seealso></p> + <seealso marker="#call-2">call/[2,3].</seealso></p> </desc> </func> - + <func> - <name>start(SshConnection, ChannelId, ChannelCb, CbInitArgs) -> </name> - <name>start_link(SshConnection, ChannelId, ChannelCb, CbInitArgs) -> + <name since="OTP 21.0">start(SshConnection, ChannelId, ChannelCb, CbInitArgs) -> </name> + <name since="OTP 21.0">start_link(SshConnection, ChannelId, ChannelCb, CbInitArgs) -> {ok, ChannelRef} | {error, Reason}</name> <fsummary>Starts a process that handles an SSH channel.</fsummary> <type> - <v>SshConnection = ssh_connection_ref()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>SshConnection = ssh:connection_ref()</v> + <d>As returned by <seealso marker="ssh#connect-3">ssh:connect/3</seealso></d> + + <v>ChannelId = <seealso marker="ssh#type-channel_id">ssh:channel_id()</seealso></v> <d>As returned by <seealso marker ="ssh_connection#session_channel/2"> ssh_connection:session_channel/[2,4]</seealso>.</d> + <v>ChannelCb = atom()</v> <d>Name of the module implementing the service-specific parts of the channel.</d> + <v>CbInitArgs = [term()]</v> <d>Argument list for the <c>init</c> function in the callback module.</d> + <v>ChannelRef = pid()</v> </type> <desc> @@ -235,18 +227,24 @@ </funcs> <section> + <title>Callback Functions</title> + <p> + The following functions are to be exported from a + <c>ssh_client_channel</c> callback module. + </p> <marker id="cb_timeouts"></marker> - <title>CALLBACK TIME-OUTS</title> - - <p>The time-out values that can be returned by the callback functions - have the same semantics as in a <seealso marker="stdlib:gen_server">gen_server</seealso>. - If the time-out occurs, <seealso marker="#Module:handle_msg-2">handle_msg/2</seealso> - is called as <c>handle_msg(timeout, State)</c>.</p> + <section> + <title>Callback timeouts</title> + <p>The timeout values that can be returned by the callback functions + have the same semantics as in a <seealso marker="stdlib:gen_server">gen_server</seealso>. + If the time-out occurs, <seealso marker="#Module:handle_msg-2">handle_msg/2</seealso> + is called as <c>handle_msg(timeout, State)</c>.</p> + </section> </section> <funcs> <func> - <name>Module:code_change(OldVsn, State, Extra) -> {ok, + <name since="OTP 21.0">Module:code_change(OldVsn, State, Extra) -> {ok, NewState}</name> <fsummary>Converts process state when code is changed.</fsummary> <type> @@ -289,13 +287,13 @@ </func> <func> - <name>Module:init(Args) -> {ok, State} | {ok, State, timeout()} | + <name since="OTP 21.0">Module:init(Args) -> {ok, State} | {ok, State, timeout()} | {stop, Reason}</name> <fsummary>Makes necessary initializations and returns the initial channel state if the initializations succeed.</fsummary> <type> <v>Args = term()</v> - <d>Last argument to <c>ssh_channel:start_link/4</c>.</d> + <d>Last argument to <c>start_link/4</c>.</d> <v>State = term()</v> <v>Reason = term()</v> </type> @@ -304,41 +302,41 @@ state if the initializations succeed. </p> <p>For more detailed information on time-outs, see Section - <seealso marker="#cb_timeouts">CALLBACK TIME-OUTS</seealso>. </p> + <seealso marker="#cb_timeouts">Callback timeouts</seealso>. </p> </desc> </func> <func> - <name>Module:handle_call(Msg, From, State) -> Result</name> + <name since="OTP 21.0">Module:handle_call(Msg, From, State) -> Result</name> <fsummary>Handles messages sent by calling - <c>ssh_channel:call/[2,3]</c>.</fsummary> + <c>call/[2,3]</c>.</fsummary> <type> <v>Msg = term()</v> <v>From = opaque()</v> <d>Is to be used as argument to - <seealso marker="#reply-2">ssh_channel:reply/2</seealso></d> + <seealso marker="#reply-2">reply/2</seealso></d> <v>State = term()</v> <v>Result = {reply, Reply, NewState} | {reply, Reply, NewState, timeout()} | {noreply, NewState} | {noreply , NewState, timeout()} | {stop, Reason, Reply, NewState} | {stop, Reason, NewState} </v> <v>Reply = term()</v> - <d>Will be the return value of <seealso marker="#call-2">ssh_channel:call/[2,3]</seealso></d> + <d>Will be the return value of <seealso marker="#call-2">call/[2,3]</seealso></d> <v>NewState = term()</v> <v>Reason = term()</v> </type> <desc> <p>Handles messages sent by calling - <seealso marker="#call-2">ssh_channel:call/[2,3]</seealso> + <seealso marker="#call-2">call/[2,3]</seealso> </p> <p>For more detailed information on time-outs,, see Section - <seealso marker="#cb_timeouts">CALLBACK TIME-OUTS</seealso>.</p> + <seealso marker="#cb_timeouts">Callback timeouts</seealso>.</p> </desc> </func> <func> - <name>Module:handle_cast(Msg, State) -> Result</name> + <name since="OTP 21.0">Module:handle_cast(Msg, State) -> Result</name> <fsummary>Handles messages sent by calling - <c>ssh_channel:cact/2</c>.</fsummary> + <c>cast/2</c>.</fsummary> <type> <v>Msg = term()</v> <v>State = term()</v> @@ -349,22 +347,22 @@ </type> <desc> <p>Handles messages sent by calling - <c>ssh_channel:cast/2</c>. + <c>cast/2</c>. </p> <p>For more detailed information on time-outs, see Section - <seealso marker="#cb_timeouts">CALLBACK TIME-OUTS</seealso>.</p> + <seealso marker="#cb_timeouts">Callback timeouts</seealso>.</p> </desc> </func> <func> - <name>Module:handle_msg(Msg, State) -> {ok, State} | + <name since="OTP 21.0">Module:handle_msg(Msg, State) -> {ok, State} | {stop, ChannelId, State}</name> <fsummary>Handles other messages than SSH connection protocol, call, or cast messages sent to the channel.</fsummary> <type> <v>Msg = timeout | term()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>ChannelId = <seealso marker="ssh#type-channel_id">ssh:channel_id()</seealso></v> <v>State = term() </v> </type> <desc> @@ -376,11 +374,10 @@ function and all channels are to handle the following message.</p> <taglist> - <tag><c><![CDATA[{ssh_channel_up, ssh_channel_id(), - ssh_connection_ref()}]]></c></tag> + <tag><c>{ssh_channel_up, ssh:channel_id(), ssh:connection_ref()}</c></tag> <item><p>This is the first message that the channel receives. It is sent just before the <seealso - marker="#init-1">ssh_channel:init/1</seealso> function + marker="#init-1">init/1</seealso> function returns successfully. This is especially useful if the server wants to send a message to the client without first receiving a message from it. If the message is not @@ -392,12 +389,12 @@ </func> <func> - <name>Module:handle_ssh_msg(Msg, State) -> {ok, State} | {stop, + <name since="OTP 21.0">Module:handle_ssh_msg(Msg, State) -> {ok, State} | {stop, ChannelId, State}</name> <fsummary>Handles <c>ssh</c> connection protocol messages.</fsummary> <type> <v>Msg = ssh_connection:event()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>ChannelId = <seealso marker="ssh#type-channel_id">ssh:channel_id()</seealso></v> <v>State = term()</v> </type> <desc> @@ -407,10 +404,10 @@ </p> <p>The following message is taken care of by the - <c>ssh_channel</c> behavior.</p> + <c>ssh_client_channel</c> behavior.</p> <taglist> - <tag><c><![CDATA[{closed, ssh_channel_id()}]]></c></tag> + <tag><c>{closed, ssh:channel_id()}</c></tag> <item><p>The channel behavior sends a close message to the other side, if such a message has not already been sent. Then it terminates the channel with reason <c>normal</c>.</p></item> @@ -419,7 +416,7 @@ </func> <func> - <name>Module:terminate(Reason, State) -> _</name> + <name since="OTP 21.0">Module:terminate(Reason, State) -> _</name> <fsummary>Does cleaning up before channel process termination. </fsummary> <type> diff --git a/lib/ssh/doc/src/ssh_client_key_api.xml b/lib/ssh/doc/src/ssh_client_key_api.xml index 98a1676ca4..9f2f3013e5 100644 --- a/lib/ssh/doc/src/ssh_client_key_api.xml +++ b/lib/ssh/doc/src/ssh_client_key_api.xml @@ -5,7 +5,7 @@ <header> <copyright> <year>2012</year> - <year>2016</year> + <year>2018</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> @@ -29,7 +29,7 @@ <date></date> <rev></rev> </header> - <module>ssh_client_key_api</module> + <module since="OTP R16B">ssh_client_key_api</module> <modulesummary> -behaviour(ssh_client_key_api). </modulesummary> @@ -41,7 +41,7 @@ see the <seealso marker="SSH_app"> ssh(6)</seealso> application manual.</p> </description> - <section> + <!-- section> <title>DATA TYPES</title> <p>Type definitions that are used more than once in this module, @@ -68,23 +68,34 @@ | 'rsa-sha2-256' | 'rsa-sha2-384' | 'rsa-sha2-512' | 'ecdsa-sha2-nistp256' | 'ecdsa-sha2-nistp384' | 'ecdsa-sha2-nistp521' </c></p></item> </taglist> - </section> + </section --> + + <datatypes> + <datatype> + <name name="client_key_cb_options"/> + <desc> + <p>Options provided to <seealso marker="ssh#connect-3">ssh:connect/[3,4]</seealso>. + </p> + <p>The option list given in the + <seealso marker="ssh#type-key_cb_common_option"><c>key_cb</c></seealso> + option is available with the key <c>key_cb_private</c>. + </p> + </desc> + </datatype> + </datatypes> <funcs> <func> - <name>Module:add_host_key(HostNames, Key, ConnectOptions) -> ok | {error, Reason}</name> + <name since="OTP R16B">Module:add_host_key(HostNames, PublicHostKey, ConnectOptions) -> ok | {error, Reason}</name> <fsummary>Adds a host key to the set of trusted host keys.</fsummary> <type> - <v>HostNames = string()</v> - <d>Description of the host that owns the <c>PublicKey</c>.</d> + <v>HostNames = string()</v> + <d>Description of the host that owns the <c>PublicHostKey</c>.</d> - <v>Key = public_key()</v> - <d>Normally an RSA, DSA or ECDSA public key, but handling of other public keys can be added.</d> + <v>PublicHostKey = <seealso marker="public_key:public_key#type-public_key">public_key:public_key()</seealso></v> + <d>Of ECDSA keys, only the Normally an RSA, DSA or ECDSA public key, but handling of other public keys can be added.</d> - <v>ConnectOptions = proplists:proplist()</v> - <d>Options provided to <seealso marker="ssh#connect-3">ssh:connect/[3,4]</seealso>. The option list given in - the <c>key_cb</c> option is available with the key <c>key_cb_private</c>.</d> - <v>Reason = term().</v> + <v>ConnectOptions = <seealso marker="#type-client_key_cb_options">client_key_cb_options()</seealso></v> </type> <desc> <p>Adds a host key to the set of trusted host keys.</p> @@ -92,21 +103,19 @@ </func> <func> - <name>Module:is_host_key(Key, Host, Algorithm, ConnectOptions) -> Result</name> + <name since="OTP R16B">Module:is_host_key(Key, Host, Algorithm, ConnectOptions) -> Result</name> <fsummary>Checks if a host key is trusted.</fsummary> <type> - <v>Key = public_key() </v> + <v>Key = <seealso marker="public_key:public_key#type-public_key">public_key:public_key()</seealso></v> <d>Normally an RSA, DSA or ECDSA public key, but handling of other public keys can be added.</d> <v>Host = string()</v> <d>Description of the host.</d> - <v>Algorithm = public_key_algorithm()</v> + <v>Algorithm = <seealso marker="ssh#type-pubkey_alg">ssh:pubkey_alg()</seealso></v> <d>Host key algorithm.</d> - <v>ConnectOptions = proplists:proplist() </v> - <d>Options provided to <seealso marker="ssh#connect-3">ssh:connect/[3,4]</seealso>. The option list given in - the <c>key_cb</c> option is available with the key <c>key_cb_private</c>.</d> + <v>ConnectOptions = <seealso marker="#type-client_key_cb_options">client_key_cb_options()</seealso></v> <v>Result = boolean()</v> </type> @@ -116,18 +125,16 @@ </func> <func> - <name>Module:user_key(Algorithm, ConnectOptions) -> + <name since="OTP R16B">Module:user_key(Algorithm, ConnectOptions) -> {ok, PrivateKey} | {error, Reason}</name> <fsummary>Fetches the users <em>public key</em> matching the <c>Algorithm</c>.</fsummary> <type> - <v>Algorithm = public_key_algorithm()</v> + <v>Algorithm = <seealso marker="ssh#type-pubkey_alg">ssh:pubkey_alg()</seealso></v> <d>Host key algorithm.</d> - <v>ConnectOptions = proplists:proplist()</v> - <d>Options provided to <seealso marker="ssh#connect-3">ssh:connect/[3,4]</seealso>. The option list given in - the <c>key_cb</c> option is available with the key <c>key_cb_private</c>.</d> + <v>ConnectOptions = <seealso marker="#type-client_key_cb_options">client_key_cb_options()</seealso></v> - <v>PrivateKey = private_key()</v> + <v>PrivateKey = <seealso marker="public_key:public_key#type-private_key">public_key:private_key()</seealso></v> <d>Private key of the user matching the <c>Algorithm</c>.</d> <v>Reason = term()</v> diff --git a/lib/ssh/doc/src/ssh_connection.xml b/lib/ssh/doc/src/ssh_connection.xml index 150d46a9a2..2a701929f6 100644 --- a/lib/ssh/doc/src/ssh_connection.xml +++ b/lib/ssh/doc/src/ssh_connection.xml @@ -5,7 +5,7 @@ <header> <copyright> <year>2008</year> - <year>2015</year> + <year>2018</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> @@ -30,7 +30,7 @@ <date></date> <rev></rev> </header> - <module>ssh_connection</module> + <module since="">ssh_connection</module> <modulesummary> This module provides API functions to send SSH Connection Protocol events to the other side of an SSH channel. @@ -43,10 +43,10 @@ which are received as messages by the remote channel. If the receiving channel is an Erlang process, the messages have the format - <c><![CDATA[{ssh_cm, ssh_connection_ref(), ssh_event_msg()}]]></c>. - If the <seealso marker="ssh_channel">ssh_channel</seealso> behavior is used to + <c><![CDATA[{ssh_cm, connection_ref(), ssh_event_msg()}]]></c>. + If the <seealso marker="ssh_client_channel">ssh_client_channel</seealso> behavior is used to implement the channel process, these messages are handled by - <seealso marker="ssh_channel#Module:handle_ssh_msg-2">handle_ssh_msg/2</seealso>.</p> + <seealso marker="ssh_client_channel#Module:handle_ssh_msg-2">handle_ssh_msg/2</seealso>.</p> </description> <section> @@ -63,10 +63,10 @@ <item><p>list of ASCII characters</p></item> <tag><c>timeout() =</c></tag> <item><p><c>infinity | integer()</c> in milliseconds</p></item> - <tag><c>ssh_connection_ref() =</c></tag> + <tag><c>connection_ref() =</c></tag> <item><p>opaque() -as returned by <c>ssh:connect/3</c> or sent to an SSH channel processes</p></item> - <tag><c>ssh_channel_id() =</c></tag> + <tag><c>channel_id() =</c></tag> <item><p><c>integer()</c></p></item> <tag><c>ssh_data_type_code() =</c></tag> <item><p><c>1</c> ("stderr") | <c>0</c> ("normal") are @@ -75,7 +75,7 @@ <tag><c>ssh_request_status() =</c></tag> <item><p> <c>success | failure</c></p></item> <tag><c>event() =</c></tag> - <item><p><c>{ssh_cm, ssh_connection_ref(), ssh_event_msg()}</c></p></item> + <item><p><c>{ssh_cm, connection_ref(), ssh_event_msg()}</c></p></item> <tag><c>ssh_event_msg() =</c></tag> <item><p><c>data_events() | status_events() | terminal_events()</c></p></item> <tag><c>reason() =</c></tag> @@ -86,12 +86,12 @@ <tag><em>data_events()</em></tag> <item> <taglist> - <tag><c><![CDATA[{data, ssh_channel_id(), ssh_data_type_code(), Data :: binary()}]]></c></tag> + <tag><c><![CDATA[{data, channel_id(), ssh_data_type_code(), Data :: binary()}]]></c></tag> <item><p>Data has arrived on the channel. This event is sent as a result of calling <seealso marker="ssh_connection#send-3"> ssh_connection:send/[3,4,5]</seealso>.</p></item> - <tag><c><![CDATA[{eof, ssh_channel_id()}]]></c></tag> + <tag><c><![CDATA[{eof, channel_id()}]]></c></tag> <item><p>Indicates that the other side sends no more data. This event is sent as a result of calling <seealso marker="ssh_connection#send_eof-2"> ssh_connection:send_eof/2</seealso>. @@ -103,7 +103,7 @@ <item> <taglist> - <tag><c><![CDATA[{signal, ssh_channel_id(), ssh_signal()}]]></c></tag> + <tag><c><![CDATA[{signal, channel_id(), ssh_signal()}]]></c></tag> <item><p>A signal can be delivered to the remote process/service using the following message. Some systems do not support signals, in which case they are to ignore this message. There is @@ -111,7 +111,7 @@ referred to are on OS-level and not something generated by an Erlang program.</p></item> - <tag><c><![CDATA[{exit_signal, ssh_channel_id(), ExitSignal :: string(), ErrorMsg ::string(), + <tag><c><![CDATA[{exit_signal, channel_id(), ExitSignal :: string(), ErrorMsg ::string(), LanguageString :: string()}]]></c></tag> <item><p>A remote execution can terminate violently because of a signal. @@ -119,7 +119,7 @@ values, see <url href="http://www.ietf.org/rfc/rfc4254.txt">RFC 4254</url> Section 6.10, which shows a special case of these signals.</p></item> - <tag><c><![CDATA[{exit_status, ssh_channel_id(), ExitStatus :: integer()}]]></c></tag> + <tag><c><![CDATA[{exit_status, channel_id(), ExitStatus :: integer()}]]></c></tag> <item><p>When the command running at the other end terminates, the following message can be sent to return the exit status of the command. A zero <c>exit_status</c> usually means that the command @@ -127,11 +127,11 @@ <seealso marker="ssh_connection#exit_status-3"> ssh_connection:exit_status/3</seealso>.</p></item> - <tag><c><![CDATA[{closed, ssh_channel_id()}]]></c></tag> + <tag><c><![CDATA[{closed, channel_id()}]]></c></tag> <item><p>This event is sent as a result of calling <seealso marker="ssh_connection#close-2">ssh_connection:close/2</seealso>. Both the handling of this event and sending it are taken care of by the - <seealso marker="ssh_channel">ssh_channel</seealso> behavior.</p></item> + <seealso marker="ssh_client_channel">ssh_client_channel</seealso> behavior.</p></item> </taglist> </item> @@ -149,14 +149,14 @@ with the boolean value of <c>WantReply</c> as the second argument.</p> <taglist> - <tag><c><![CDATA[{env, ssh_channel_id(), WantReply :: boolean(), + <tag><c><![CDATA[{env, channel_id(), WantReply :: boolean(), Var ::string(), Value :: string()}]]></c></tag> <item><p>Environment variables can be passed to the shell/command to be started later. This event is sent as a result of calling <seealso marker="ssh_connection#setenv-5"> ssh_connection:setenv/5</seealso>. </p></item> - <tag><c><![CDATA[{pty, ssh_channel_id(), + <tag><c><![CDATA[{pty, channel_id(), WantReply :: boolean(), {Terminal :: string(), CharWidth :: integer(), RowHeight :: integer(), PixelWidth :: integer(), PixelHeight :: integer(), TerminalModes :: [{Opcode :: atom() | integer(), @@ -181,13 +181,13 @@ <seealso marker="ssh_connection#shell-2"> ssh_connection:shell/2</seealso>. </p></item> - <tag><c><![CDATA[{window_change, ssh_channel_id(), CharWidth() :: integer(), + <tag><c><![CDATA[{window_change, channel_id(), CharWidth() :: integer(), RowHeight :: integer(), PixWidth :: integer(), PixHeight :: integer()}]]></c></tag> <item><p>When the window (terminal) size changes on the client side, it <em>can</em> send a message to the server side to inform it of the new dimensions. No API function generates this event.</p></item> - <tag><c><![CDATA[{exec, ssh_channel_id(), + <tag><c><![CDATA[{exec, channel_id(), WantReply :: boolean(), Cmd :: string()}]]></c></tag> <item><p>This message requests that the server starts execution of the given command. This event is sent as a result of calling <seealso @@ -201,51 +201,51 @@ <funcs> <func> - <name>adjust_window(ConnectionRef, ChannelId, NumOfBytes) -> ok</name> + <name since="">adjust_window(ConnectionRef, ChannelId, NumOfBytes) -> ok</name> <fsummary>Adjusts the SSH flow control window.</fsummary> <type> - <v>ConnectionRef = ssh_connection_ref()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>ConnectionRef = connection_ref()</v> + <v>ChannelId = channel_id()</v> <v>NumOfBytes = integer()</v> </type> <desc> <p>Adjusts the SSH flow control window. This is to be done by both the client- and server-side channel processes.</p> - <note><p>Channels implemented with the <seealso marker="ssh_channel"> ssh_channel</seealso> + <note><p>Channels implemented with the <seealso marker="ssh_client_channel"> ssh_client_channel</seealso> behavior do not normally need to call this function as flow control is handled by the behavior. The behavior adjusts the window every time - the callback <seealso marker="ssh_channel#Module:handle_ssh_msg-2"> + the callback <seealso marker="ssh_client_channel#Module:handle_ssh_msg-2"> handle_ssh_msg/2</seealso> returns after processing channel data.</p></note> </desc> </func> <func> - <name>close(ConnectionRef, ChannelId) -> ok</name> + <name since="">close(ConnectionRef, ChannelId) -> ok</name> <fsummary>Sends a close message on the channel <c>ChannelId</c>.</fsummary> <type> - <v>ConnectionRef = ssh_connection_ref()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>ConnectionRef = connection_ref()</v> + <v>ChannelId = channel_id()</v> </type> <desc> <p>A server- or client-channel process can choose to close their session by sending a close event. </p> - <note><p>This function is called by the <c>ssh_channel</c> + <note><p>This function is called by the <c>ssh_client_channel</c> behavior when the channel is terminated, see <seealso - marker="ssh_channel"> ssh_channel(3)</seealso>. Thus, channels implemented + marker="ssh_client_channel"> ssh_client_channel(3)</seealso>. Thus, channels implemented with the behavior are not to call this function explicitly.</p></note> </desc> </func> <func> - <name>exec(ConnectionRef, ChannelId, Command, TimeOut) -> ssh_request_status() | + <name since="">exec(ConnectionRef, ChannelId, Command, TimeOut) -> ssh_request_status() | {error, reason()}</name> <fsummary>Requests that the server starts the execution of the given command.</fsummary> <type> - <v>ConnectionRef = ssh_connection_ref()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>ConnectionRef = connection_ref()</v> + <v>ChannelId = channel_id()</v> <v>Command = string()</v> <v>Timeout = timeout()</v> </type> @@ -256,39 +256,39 @@ request is a one-time execution that closes the channel when it is done.</p> <taglist> - <tag><c>N x {ssh_cm, ssh_connection_ref(), - {data, ssh_channel_id(), ssh_data_type_code(), Data :: binary()}}</c></tag> + <tag><c>N x {ssh_cm, connection_ref(), + {data, channel_id(), ssh_data_type_code(), Data :: binary()}}</c></tag> <item><p>The result of executing the command can be only one line or thousands of lines depending on the command.</p></item> - <tag><c>0 or 1 x {ssh_cm, ssh_connection_ref(), {eof, ssh_channel_id()}}</c></tag> + <tag><c>0 or 1 x {ssh_cm, connection_ref(), {eof, channel_id()}}</c></tag> <item><p>Indicates that no more data is to be sent.</p></item> <tag><c>0 or 1 x {ssh_cm, - ssh_connection_ref(), {exit_signal, - ssh_channel_id(), ExitSignal :: string(), ErrorMsg :: string(), LanguageString :: string()}}</c></tag> + connection_ref(), {exit_signal, + channel_id(), ExitSignal :: string(), ErrorMsg :: string(), LanguageString :: string()}}</c></tag> <item><p>Not all systems send signals. For details on valid string values, see RFC 4254, Section 6.10</p></item> - <tag><c>0 or 1 x {ssh_cm, ssh_connection_ref(), {exit_status, - ssh_channel_id(), ExitStatus :: integer()}}</c></tag> + <tag><c>0 or 1 x {ssh_cm, connection_ref(), {exit_status, + channel_id(), ExitStatus :: integer()}}</c></tag> <item><p>It is recommended by the SSH Connection Protocol to send this message, but that is not always the case.</p></item> - <tag><c>1 x {ssh_cm, ssh_connection_ref(), - {closed, ssh_channel_id()}}</c></tag> - <item><p>Indicates that the <c>ssh_channel</c> started for the + <tag><c>1 x {ssh_cm, connection_ref(), + {closed, channel_id()}}</c></tag> + <item><p>Indicates that the <c>ssh_client_channel</c> started for the execution of the command has now been shut down.</p></item> </taglist> </desc> </func> <func> - <name>exit_status(ConnectionRef, ChannelId, Status) -> ok</name> + <name since="">exit_status(ConnectionRef, ChannelId, Status) -> ok</name> <fsummary>Sends the exit status of a command to the client.</fsummary> <type> - <v>ConnectionRef = ssh_connection_ref() </v> - <v>ChannelId = ssh_channel_id()</v> + <v>ConnectionRef = connection_ref() </v> + <v>ChannelId = channel_id()</v> <v>Status = integer()</v> </type> <desc> @@ -298,14 +298,14 @@ </func> <func> - <name>ptty_alloc(ConnectionRef, ChannelId, Options) -></name> - <name>ptty_alloc(ConnectionRef, ChannelId, Options, Timeout) -> > ssh_request_status() | + <name since="OTP 17.5">ptty_alloc(ConnectionRef, ChannelId, Options) -></name> + <name since="OTP 17.4">ptty_alloc(ConnectionRef, ChannelId, Options, Timeout) -> > ssh_request_status() | {error, reason()}</name> <fsummary>Sends an SSH Connection Protocol <c>pty_req</c>, to allocate a pseudo-terminal.</fsummary> <type> - <v>ConnectionRef = ssh_connection_ref()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>ConnectionRef = connection_ref()</v> + <v>ChannelId = channel_id()</v> <v>Options = proplists:proplist()</v> </type> <desc> @@ -339,13 +339,13 @@ </func> <func> - <name>reply_request(ConnectionRef, WantReply, Status, ChannelId) -> ok</name> + <name since="">reply_request(ConnectionRef, WantReply, Status, ChannelId) -> ok</name> <fsummary>Sends status replies to requests that want such replies.</fsummary> <type> - <v>ConnectionRef = ssh_connection_ref()</v> + <v>ConnectionRef = connection_ref()</v> <v>WantReply = boolean()</v> <v>Status = ssh_request_status()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>ChannelId = channel_id()</v> </type> <desc> <p>Sends status replies to requests where the requester has @@ -357,15 +357,15 @@ </func> <func> - <name>send(ConnectionRef, ChannelId, Data) -></name> - <name>send(ConnectionRef, ChannelId, Data, Timeout) -></name> - <name>send(ConnectionRef, ChannelId, Type, Data) -></name> - <name>send(ConnectionRef, ChannelId, Type, Data, TimeOut) -> + <name since="">send(ConnectionRef, ChannelId, Data) -></name> + <name since="">send(ConnectionRef, ChannelId, Data, Timeout) -></name> + <name since="">send(ConnectionRef, ChannelId, Type, Data) -></name> + <name since="">send(ConnectionRef, ChannelId, Type, Data, TimeOut) -> ok | {error, timeout} | {error, closed}</name> <fsummary>Sends channel data.</fsummary> <type> - <v>ConnectionRef = ssh_connection_ref()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>ConnectionRef = connection_ref()</v> + <v>ChannelId = channel_id()</v> <v>Data = binary()</v> <v>Type = ssh_data_type_code()</v> <v>Timeout = timeout()</v> @@ -380,11 +380,11 @@ </func> <func> - <name>send_eof(ConnectionRef, ChannelId) -> ok | {error, closed}</name> + <name since="">send_eof(ConnectionRef, ChannelId) -> ok | {error, closed}</name> <fsummary>Sends EOF on channel <c>ChannelId</c>.</fsummary> <type> - <v>ConnectionRef = ssh_connection_ref()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>ConnectionRef = connection_ref()</v> + <v>ChannelId = channel_id()</v> </type> <desc> <p>Sends EOF on channel <c>ChannelId</c>.</p> @@ -392,12 +392,12 @@ </func> <func> - <name>session_channel(ConnectionRef, Timeout) -></name> - <name>session_channel(ConnectionRef, InitialWindowSize, - MaxPacketSize, Timeout) -> {ok, ssh_channel_id()} | {error, reason()}</name> + <name since="">session_channel(ConnectionRef, Timeout) -></name> + <name since="">session_channel(ConnectionRef, InitialWindowSize, + MaxPacketSize, Timeout) -> {ok, channel_id()} | {error, reason()}</name> <fsummary>Opens a channel for an SSH session.</fsummary> <type> - <v>ConnectionRef = ssh_connection_ref()</v> + <v>ConnectionRef = connection_ref()</v> <v>InitialWindowSize = integer()</v> <v>MaxPacketSize = integer()</v> <v>Timeout = timeout()</v> @@ -410,13 +410,13 @@ </func> <func> - <name>setenv(ConnectionRef, ChannelId, Var, Value, TimeOut) -> ssh_request_status() | + <name since="">setenv(ConnectionRef, ChannelId, Var, Value, TimeOut) -> ssh_request_status() | {error, reason()}</name> <fsummary>Environment variables can be passed to the shell/command to be started later.</fsummary> <type> - <v>ConnectionRef = ssh_connection_ref()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>ConnectionRef = connection_ref()</v> + <v>ChannelId = channel_id()</v> <v>Var = string()</v> <v>Value = string()</v> <v>Timeout = timeout()</v> @@ -428,28 +428,32 @@ </func> <func> - <name>shell(ConnectionRef, ChannelId) -> ssh_request_status() | {error, closed} + <name since="">shell(ConnectionRef, ChannelId) -> ok | failure | {error, closed} </name> <fsummary>Requests that the user default shell (typically defined in /etc/passwd in Unix systems) is to be executed at the server end.</fsummary> <type> - <v>ConnectionRef = ssh_connection_ref()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>ConnectionRef = connection_ref()</v> + <v>ChannelId = channel_id()</v> </type> <desc> <p>Is to be called by a client channel process to request that the user default shell (typically defined in /etc/passwd in Unix systems) is executed at the server end.</p> + <p>Note: the return value is <c>ok</c> instead of <c>success</c> unlike in other + functions in this module. This is a fault that was introduced so long ago that + any change would break a large number of existing software. + </p> </desc> </func> <func> - <name>subsystem(ConnectionRef, ChannelId, Subsystem, Timeout) -> ssh_request_status() | + <name since="">subsystem(ConnectionRef, ChannelId, Subsystem, Timeout) -> ssh_request_status() | {error, reason()}</name> <fsummary>Requests to execute a predefined subsystem on the server.</fsummary> <type> - <v>ConnectionRef = ssh_connection_ref()</v> - <v>ChannelId = ssh_channel_id()</v> + <v>ConnectionRef = connection_ref()</v> + <v>ChannelId = channel_id()</v> <v>Subsystem = string()</v> <v>Timeout = timeout()</v> </type> diff --git a/lib/ssh/doc/src/ssh_file.xml b/lib/ssh/doc/src/ssh_file.xml new file mode 100644 index 0000000000..f1fef09083 --- /dev/null +++ b/lib/ssh/doc/src/ssh_file.xml @@ -0,0 +1,285 @@ +<?xml version="1.0" encoding="utf-8" ?> +<!DOCTYPE erlref SYSTEM "erlref.dtd"> + +<erlref> + <header> + <copyright> + <year>2018</year><year>2018</year> + <holder>Ericsson AB. All Rights Reserved.</holder> + </copyright> + <legalnotice> + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + </legalnotice> + + <title>ssh_file</title> + <prepared></prepared> + <docno></docno> + <date></date> + <rev></rev> + </header> + <module since="OTP 21.2">ssh_file</module> + <modulesummary>Default callback module for the client's and server's database operations in the ssh application</modulesummary> + <description> + <p>This module is the default callback handler for the client's and the server's user and host "database" operations. + All data, for instance key pairs, are stored in files in the normal file system. This page documents the files, where they + are stored and configuration options for this callback module. + </p> + <p>The intention is to be compatible with the + <url href="http://www.openssh.com">OpenSSH</url> + storage in files. Therefore it mimics directories and filenames of + <url href="http://www.openssh.com">OpenSSH</url>. + </p> + + <p>Ssh_file implements the <seealso marker="ssh:ssh_server_key_api">ssh_server_key_api</seealso> and + the <seealso marker="ssh:ssh_client_key_api">ssh_client_key_api</seealso>. + This enables the user to make an own interface using for example a database handler. + </p> + <p>Such another callback module could be used by setting the option + <seealso marker="ssh:ssh#type-key_cb_common_option"><c>key_cb</c></seealso> + when starting a client or a server (with for example + <seealso marker="ssh:ssh#connect-3">ssh:connect</seealso>, + <seealso marker="ssh:ssh#daemon-2">ssh:daemon</seealso> of + <seealso marker="ssh:ssh#shell-1">ssh:shell</seealso> + ). + </p> + + <note> + <p>The functions are <i>Callbacks</i> for the SSH app. They are not intended to be called from the user's code! + </p> + </note> + </description> + + <section> + <title>Files, directories and who uses them</title> + <section> + <title>Daemons</title> + <p>Daemons uses all files stored in the <seealso marker="#SYSDIR">SYSDIR</seealso> directory. + </p> + <p>Optionaly, in case of <c>publickey</c> authorization, one or more of the remote user's public keys + in the <seealso marker="#USERDIR">USERDIR</seealso> directory are used. + See the files + <seealso marker="#USERDIR-authorized_keys"><c>USERDIR/authorized_keys</c></seealso> and + <seealso marker="#USERDIR-authorized_keys2"><c>USERDIR/authorized_keys2</c></seealso>. + </p> + </section> + + <section> + <title>Clients</title> + <p>Clients uses all files stored in the <seealso marker="#USERDIR">USERDIR</seealso> directory. + </p> + </section> + + <section> + <title>Directory contents</title> + <taglist> + <tag><marker id="LOCALUSER"/>LOCALUSER</tag> + <item><p>The user name of the OS process running the Erlang virtual machine (emulator).</p> + </item> + + <tag><marker id="SYSDIR"/>SYSDIR</tag> + <item><p>This is the directory holding the server's files:</p> + <list> + <item><marker id="SYSDIR-ssh_host_dsa_key"/><c>ssh_host_dsa_key</c> - private dss host key (optional)</item> + <item><marker id="SYSDIR-ssh_host_rsa_key"/><c>ssh_host_rsa_key</c> - private rsa host key (optional)</item> + <item><marker id="SYSDIR-ssh_host_ecdsa_key"/><c>ssh_host_ecdsa_key</c> - private ecdsa host key (optional)</item> + <item><marker id="SYSDIR-ssh_host_ed25519_key"/><c>ssh_host_ed25519_key</c> - private eddsa host key for curve 25519 (optional)</item> + <item><marker id="SYSDIR-ssh_host_ed448_key"/><c>ssh_host_ed448_key</c> - private eddsa host key for curve 448 (optional)</item> + </list> + <p>At least one host key must be defined. The default value of SYSDIR is <marker id="#/etc/ssh"/><c>/etc/ssh</c>. + </p> + <p>For security reasons, this directory is normally accessible only to the root user. + </p> + <p>To change the SYSDIR, see the <seealso marker="#type-system_dir_daemon_option">system_dir</seealso> option. + </p> + </item> + + <tag><marker id="USERDIR"/>USERDIR</tag> + <item><p>This is the directory holding the files:</p> + <list> + <item><marker id="USERDIR-authorized_keys"/><c>authorized_keys</c> + and, as second alternative + <marker id="USERDIR-authorized_keys2"/><c>authorized_keys2</c> - + the user's public keys are stored concatenated in one of those files. + </item> + <item><marker id="USERDIR-known_hosts"/><c>known_hosts</c> - host keys from hosts visited + concatenated. The file is created and used by the client.</item> + <item><marker id="USERDIR-id_dsa"/><c>id_dsa</c> - private dss user key (optional)</item> + <item><marker id="USERDIR-id_rsa"/><c>id_rsa</c> - private rsa user key (optional)</item> + <item><marker id="USERDIR-id_ecdsa"/><c>id_ecdsa</c> - private ecdsa user key (optional)</item> + <item><marker id="USERDIR-id_ed25519"/><c>id_ed25519</c> - private eddsa user key for curve 25519 (optional)</item> + <item><marker id="USERDIR-id_ed448"/><c>id_ed448</c> - private eddsa user key for curve 448 (optional)</item> + </list> + <p>The default value of USERDIR is <c>/home/</c><seealso marker="#LOCALUSER"><c>LOCALUSER</c></seealso><c>/.ssh</c>. + </p> + <p>To change the USERDIR, see the <seealso marker="#type-user_dir_common_option">user_dir</seealso> option + </p> + </item> + </taglist> + </section> + </section> + + <datatypes> + <datatype_title>Options for the default ssh_file callback module</datatype_title> + <datatype> + <name name="user_dir_common_option"/> + <desc> + <p>Sets the <seealso marker="#USERDIR">user directory</seealso>.</p> + </desc> + </datatype> + + <datatype> + <name name="user_dir_fun_common_option"/> + <name name="user2dir"/> + <desc> + <p>Sets the <seealso marker="#USERDIR">user directory</seealso> dynamically + by evaluating the <c>user2dir</c> function. + </p> + </desc> + </datatype> + + <datatype> + <name name="system_dir_daemon_option"/> + <desc> + <p>Sets the <seealso marker="#SYSDIR">system directory</seealso>.</p> + </desc> + </datatype> + + <datatype> + <name name="pubkey_passphrase_client_options"/> + <desc> + <p>If the user's DSA, RSA or ECDSA key is protected by a passphrase, it can be + supplied with thoose options. + </p> + <p>Note that EdDSA passhrases (Curves 25519 and 448) are not implemented.</p> + </desc> + </datatype> + + </datatypes> + + <funcs> + <func> + <name since="OTP 21.2">host_key(Algorithm, DaemonOptions) -> {ok, Key} | {error, Reason}</name> + <fsummary></fsummary> + <desc> + <p><strong>Types and description</strong></p> + <p>See the api description in + <seealso marker="ssh:ssh_server_key_api#Module:host_key-2">ssh_server_key_api, Module:host_key/2</seealso>. + </p> + <p><strong>Options</strong></p> + <list> + <item><seealso marker="#type-system_dir_daemon_option">system_dir</seealso></item> + <!-- item>dsa_pass_phrase</item --> + <!-- item>rsa_pass_phrase</item --> + <!-- item>ecdsa_pass_phrase</item --> + </list> + <p><strong>Files</strong></p> + <list> + <item><seealso marker="#SYSDIR-ssh_host_rsa_key"><c>SYSDIR/ssh_host_rsa_key</c></seealso></item> + <item><seealso marker="#SYSDIR-ssh_host_dsa_key"><c>SYSDIR/ssh_host_dsa_key</c></seealso></item> + <item><seealso marker="#SYSDIR-ssh_host_ecdsa_key"><c>SYSDIR/ssh_host_ecdsa_key</c></seealso></item> + <item><seealso marker="#SYSDIR-ssh_host_ed25519_key"><c>SYSDIR/ssh_host_ed25519_key</c></seealso></item> + <item><seealso marker="#SYSDIR-ssh_host_ed448_key"><c>SYSDIR/ssh_host_ed448_key</c>c></seealso></item> + </list> + </desc> + </func> + + <func> + <name since="OTP 21.2">is_auth_key(PublicUserKey, User, DaemonOptions) -> Result</name> + <fsummary></fsummary> + <desc> + <p><strong>Types and description</strong></p> + <p>See the api description in + <seealso marker="ssh:ssh_server_key_api#Module:is_auth_key-3">ssh_server_key_api: Module:is_auth_key/3</seealso>. + </p> + <p><strong>Options</strong></p> + <list> + <item><seealso marker="#type-user_dir_fun_common_option">user_dir_fun</seealso></item> + <item><seealso marker="#type-user_dir_common_option">user_dir</seealso></item> + </list> + <p><strong>Files</strong></p> + <list> + <item><seealso marker="#USERDIR-authorized_keys"><c>USERDIR/authorized_keys</c></seealso></item> + <item><seealso marker="#USERDIR-authorized_keys2"><c>USERDIR/authorized_keys2</c></seealso></item> + </list> + </desc> + </func> + + <func> + <name since="OTP 21.2">add_host_key(HostNames, PublicHostKey, ConnectOptions) -> ok | {error, Reason}</name> + <fsummary></fsummary> + <desc> + <p><strong>Types and description</strong></p> + <p>See the api description in + <seealso marker="ssh:ssh_client_key_api#Module:add_host_key-3">ssh_client_key_api, Module:add_host_key/3</seealso>. + </p> + <p><strong>Option</strong></p> + <list> + <item><seealso marker="#type-user_dir_common_option">user_dir</seealso></item> + </list> + <p><strong>File</strong></p> + <list> + <item><seealso marker="#USERDIR-known_hosts"><c>USERDIR/known_hosts</c></seealso></item> + </list> + </desc> + </func> + + <func> + <name since="OTP 21.2">is_host_key(Key, Host, Algorithm, ConnectOptions) -> Result</name> + <fsummary></fsummary> + <desc> + <p><strong>Types and description</strong></p> + <p>See the api description in + <seealso marker="ssh:ssh_client_key_api#Module:is_host_key-4">ssh_client_key_api, Module:is_host_key/4</seealso>. + </p> + <p><strong>Option</strong></p> + <list> + <item><seealso marker="#type-user_dir_common_option">user_dir</seealso></item> + </list> + <p><strong>File</strong></p> + <list> + <item><seealso marker="#USERDIR-known_hosts"><c>USERDIR/known_hosts</c></seealso></item> + </list> + </desc> + </func> + + <func> + <name since="OTP 21.2">user_key(Algorithm, ConnectOptions) -> {ok, PrivateKey} | {error, Reason}</name> + <fsummary></fsummary> + <desc> + <p><strong>Types and description</strong></p> + <p>See the api description in + <seealso marker="ssh:ssh_client_key_api#Module:user_key-2">ssh_client_key_api, Module:user_key/2</seealso>. + </p> + <p><strong>Options</strong></p> + <list> + <item><seealso marker="#type-user_dir_common_option">user_dir</seealso></item> + <item><seealso marker="#type-pubkey_passphrase_client_options">dsa_pass_phrase</seealso></item> + <item><seealso marker="#type-pubkey_passphrase_client_options">rsa_pass_phrase</seealso></item> + <item><seealso marker="#type-pubkey_passphrase_client_options">ecdsa_pass_phrase</seealso></item> + </list> + <p>Note that EdDSA passhrases (Curves 25519 and 448) are not implemented.</p> + <p><strong>Files</strong></p> + <list> + <item><seealso marker="#USERDIR-id_dsa"><c>USERDIR/id_dsa</c></seealso></item> + <item><seealso marker="#USERDIR-id_rsa"><c>USERDIR/id_rsa</c></seealso></item> + <item><seealso marker="#USERDIR-id_ecdsa"><c>USERDIR/id_ecdsa</c></seealso></item> + <item><seealso marker="#USERDIR-id_ed25519"><c>USERDIR/id_ed25519</c></seealso></item> + <item><seealso marker="#USERDIR-id_ed448"><c>USERDIR/id_ed448</c></seealso></item> + </list> + </desc> + </func> + + </funcs> + +</erlref> diff --git a/lib/ssh/doc/src/ssh_protocol.xml b/lib/ssh/doc/src/ssh_protocol.xml index a0032ab449..0d99a96997 100644 --- a/lib/ssh/doc/src/ssh_protocol.xml +++ b/lib/ssh/doc/src/ssh_protocol.xml @@ -4,7 +4,7 @@ <chapter> <header> <copyright> - <year>2013</year><year>2016</year> + <year>2013</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -87,8 +87,10 @@ connection, and all channels are flow-controlled. Typically an SSH client will open a channel, send data/commands, receive data/"control information" and when it is done close the - channel. The <seealso - marker="ssh_channel">ssh_channel</seealso> behaviour makes it easy to + channel. The + <seealso marker="ssh_client_channel">ssh_client_channel</seealso> / + <seealso marker="ssh_server_channel">ssh_server_channel</seealso> (Replaces ssh_daemon_channel) + behaviours makes it easy to write your own SSH client/server processes that use flow control. It handles generic parts of SSH channel management and lets you focus on the application logic. diff --git a/lib/ssh/doc/src/ssh_server_channel.xml b/lib/ssh/doc/src/ssh_server_channel.xml new file mode 100644 index 0000000000..a4e18bbfbf --- /dev/null +++ b/lib/ssh/doc/src/ssh_server_channel.xml @@ -0,0 +1,176 @@ +<?xml version="1.0" encoding="utf-8" ?> +<!DOCTYPE erlref SYSTEM "erlref.dtd"> + +<erlref> + <header> + <copyright> + <year>2009</year> + <year>2018</year> + <holder>Ericsson AB, All Rights Reserved</holder> + </copyright> + <legalnotice> + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + The Initial Developer of the Original Code is Ericsson AB. + </legalnotice> + <title>ssh_server_channel</title> + <prepared></prepared> + <docno></docno> + <date></date> + <rev></rev> + </header> + <module since="OTP 21.0">ssh_server_channel</module> + <modulesummary>-behaviour(ssh_server_channel). (Replaces ssh_daemon_channel) + </modulesummary> + <description> + <note> + <p>This module replaces ssh_daemon_channel.</p> + <p>The old module is still available for compatibility, but should not be used for new programs. + The old module will not be maintained except for some error corrections + </p> + </note> + + <p>SSH services (clients and servers) are implemented as channels + that are multiplexed over an SSH connection and communicates over + the <url href="http://www.ietf.org/rfc/rfc4254.txt"> SSH + Connection Protocol</url>. This module provides a callback API + that takes care of generic channel aspects for daemons, such as flow control + and close messages. It lets the callback functions take care of + the service (application) specific parts. This behavior also ensures + that the channel process honors the principal of an OTP-process so + that it can be part of a supervisor tree. This is a requirement of + channel processes implementing a subsystem that will be added to + the <c>ssh</c> applications supervisor tree. + </p> + + <note><p>When implementing a client subsystem handler, use + <seealso marker="ssh_client_channel">-behaviour(ssh_client_channel)</seealso> instead. + </p> + </note> + + </description> + + <section> + <title>Callback Functions</title> + <p> + The following functions are to be exported from a + <c>ssh_server_channel</c> callback module. + </p> + </section> + + <funcs> + <func> + <name since="OTP 21.0">Module:init(Args) -> {ok, State} | {ok, State, timeout()} | + {stop, Reason}</name> + <fsummary>Makes necessary initializations and returns the + initial channel state if the initializations succeed.</fsummary> + <type> + <v>Args = term()</v> + <d>Last argument to <c>start_link/4</c>.</d> + <v>State = term()</v> + <v>Reason = term()</v> + </type> + <desc> + <p>Makes necessary initializations and returns the initial channel + state if the initializations succeed. + </p> + <p>The time-out values that can be returned + have the same semantics as in a <seealso marker="stdlib:gen_server">gen_server</seealso>. + If the time-out occurs, <seealso marker="#Module:handle_msg-2">handle_msg/2</seealso> + is called as <c>handle_msg(timeout, State)</c>. + </p> + </desc> + </func> + + <func> + <name since="OTP 21.0">Module:handle_msg(Msg, State) -> {ok, State} | + {stop, ChannelId, State}</name> + + <fsummary>Handles other messages than SSH connection protocol, + call, or cast messages sent to the channel.</fsummary> + <type> + <v>Msg = timeout | term()</v> + <v>ChannelId = <seealso marker="ssh#type-channel_id">ssh:channel_id()</seealso></v> + <v>State = term() </v> + </type> + <desc> + <p>Handles other messages than SSH Connection Protocol, call, or + cast messages sent to the channel. + </p> + + <p>Possible Erlang 'EXIT' messages is to be handled by this + function and all channels are to handle the following message.</p> + + <taglist> + <tag><c>{ssh_channel_up, ssh:channel_id(), ssh:connection_ref()}</c></tag> + <item><p>This is the first message that the channel receives. + This is especially useful if the + server wants to send a message to the client without first + receiving a message from it. If the message is not + useful for your particular scenario, ignore it by + immediately returning <c>{ok, State}</c>. + </p></item> + </taglist> + </desc> + </func> + + <func> + <name since="OTP 21.0">Module:handle_ssh_msg(Msg, State) -> {ok, State} | {stop, + ChannelId, State}</name> + <fsummary>Handles <c>ssh</c> connection protocol messages.</fsummary> + <type> + <v>Msg = ssh_connection:event()</v> + <v>ChannelId = <seealso marker="ssh#type-channel_id">ssh:channel_id()</seealso></v> + <v>State = term()</v> + </type> + <desc> + <p>Handles SSH Connection Protocol messages that may need + service-specific attention. For details, + see <seealso marker="ssh_connection"> ssh_connection:event()</seealso>. + </p> + + <p>The following message is taken care of by the + <c>ssh_server_channel</c> behavior.</p> + + <taglist> + <tag><c>{closed, ssh:channel_id()}</c></tag> + <item><p>The channel behavior sends a close message to the + other side, if such a message has not already been sent. + Then it terminates the channel with reason <c>normal</c>.</p></item> + </taglist> + </desc> + </func> + + <func> + <name since="OTP 21.0">Module:terminate(Reason, State) -> _</name> + <fsummary>Does cleaning up before channel process termination. + </fsummary> + <type> + <v>Reason = term()</v> + <v>State = term()</v> + </type> + <desc> + <p>This function is called by a channel process when it is + about to terminate. Before this function is called, <seealso + marker="ssh_connection#close-2"> ssh_connection:close/2 + </seealso> is called, if it has not been called earlier. + This function does any necessary cleaning + up. When it returns, the channel process terminates with + reason <c>Reason</c>. The return value is ignored. + </p> + </desc> + </func> + + </funcs> + +</erlref> diff --git a/lib/ssh/doc/src/ssh_server_key_api.xml b/lib/ssh/doc/src/ssh_server_key_api.xml index c6808b95d1..013a788a4a 100644 --- a/lib/ssh/doc/src/ssh_server_key_api.xml +++ b/lib/ssh/doc/src/ssh_server_key_api.xml @@ -5,7 +5,7 @@ <header> <copyright> <year>2012</year> - <year>2015</year> + <year>2018</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> @@ -29,7 +29,7 @@ <date></date> <rev></rev> </header> - <module>ssh_server_key_api</module> + <module since="OTP R16B">ssh_server_key_api</module> <modulesummary> -behaviour(ssh_server_key_api). </modulesummary> @@ -41,7 +41,7 @@ see the <seealso marker="SSH_app"> ssh(6)</seealso> application manual.</p> </description> - <section> + <!-- section> <title>DATA TYPES</title> <p>Type definitions that are used more than once in this module, @@ -69,22 +69,40 @@ | 'rsa-sha2-256' | 'rsa-sha2-384' | 'rsa-sha2-512' | 'ecdsa-sha2-nistp256' | 'ecdsa-sha2-nistp384' | 'ecdsa-sha2-nistp521' </c></p></item> </taglist> - </section> + </section --> + <datatypes> + <datatype> + <name name="daemon_key_cb_options"/> + <desc> + <p>Options provided to <seealso marker="ssh#daemon-2">ssh:daemon/2,3</seealso>. + </p> + <p>The option list given in the + <seealso marker="ssh#type-key_cb_common_option"><c>key_cb</c></seealso> + option is available with the key <c>key_cb_private</c>. + </p> + </desc> + </datatype> + </datatypes> + <funcs> <func> - <name>Module:host_key(Algorithm, DaemonOptions) -> + <name since="OTP R16B">Module:host_key(Algorithm, DaemonOptions) -> {ok, Key} | {error, Reason}</name> <fsummary>Fetches the host’s private key.</fsummary> <type> - <v>Algorithm = public_key_algorithm()</v> + <v>Algorithm = <seealso marker="ssh#type-pubkey_alg">ssh:pubkey_alg()</seealso></v> <d>Host key algorithm.</d> - <v>DaemonOptions = proplists:proplist()</v> - <d>Options provided to <seealso marker="ssh#daemon-2">ssh:daemon/[2,3]</seealso>. The option list given in - the <c>key_cb</c> option is available with the key <c>key_cb_private</c>.</d> - <v>Key = private_key() | crypto:engine_key_ref()</v> + + <v>DaemonOptions = <seealso marker="#type-daemon_key_cb_options">daemon_key_cb_options()</seealso></v> + + <v>PrivateKey = <seealso marker="public_key:public_key#type-private_key">public_key:private_key()</seealso> + | <seealso marker="crypto:crypto#type-engine_key_ref">crypto:engine_key_ref()</seealso> + </v> + <d>Private key of the host matching the <c>Algorithm</c>. It may be a reference to a 'ssh-rsa', rsa-sha2-* or 'ssh-dss' (NOT ecdsa) key stored in a loaded Engine.</d> + <v>Reason = term()</v> </type> <desc> @@ -93,16 +111,17 @@ </func> <func> - <name>Module:is_auth_key(Key, User, DaemonOptions) -> Result</name> + <name since="OTP R16B">Module:is_auth_key(PublicUserKey, User, DaemonOptions) -> Result</name> <fsummary>Checks if the user key is authorized.</fsummary> <type> - <v>Key = public_key()</v> + <v>PublicUserKey = <seealso marker="public_key:public_key#type-public_key">public_key:public_key()</seealso></v> <d>Normally an RSA, DSA or ECDSA public key, but handling of other public keys can be added</d> + <v>User = string()</v> <d>User owning the public key.</d> - <v>DaemonOptions = proplists:proplist()</v> - <d>Options provided to <seealso marker="ssh#daemon-2">ssh:daemon/[2,3]</seealso>. The option list given in - the <c>key_cb</c> option is available with the key <c>key_cb_private</c>.</d> + + <v>DaemonOptions = <seealso marker="#type-daemon_key_cb_options">daemon_key_cb_options()</seealso></v> + <v>Result = boolean()</v> </type> <desc> diff --git a/lib/ssh/doc/src/ssh_sftp.xml b/lib/ssh/doc/src/ssh_sftp.xml index 129426a6d5..c89092798d 100644 --- a/lib/ssh/doc/src/ssh_sftp.xml +++ b/lib/ssh/doc/src/ssh_sftp.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>2005</year><year>2017</year> + <year>2005</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -29,7 +29,7 @@ <rev></rev> <file>ssh_sftp.sgml</file> </header> - <module>ssh_sftp</module> + <module since="">ssh_sftp</module> <modulesummary>SFTP client.</modulesummary> <description> <p>This module implements an SSH FTP (SFTP) client. SFTP is a @@ -46,9 +46,9 @@ <taglist> <tag><c>reason()</c></tag> <item> - <p>= <c>atom()</c> A description of the reason why an operation failed.</p> + <p>= <c>atom() | string() | tuple() </c>A description of the reason why an operation failed.</p> <p> - The value is formed from the sftp error codes in the protocol-level responses as defined in + The <c>atom()</c> value is formed from the sftp error codes in the protocol-level responses as defined in <url href="https://tools.ietf.org/id/draft-ietf-secsh-filexfer-13.txt">draft-ietf-secsh-filexfer-13.txt</url> section 9.1. </p> @@ -57,9 +57,13 @@ E.g. the error code <c>SSH_FX_NO_SUCH_FILE</c> will cause the <c>reason()</c> to be <c>no_such_file</c>. </p> + <p>The <c>string()</c> reason is the error information from the server in case of an exit-signal. If that information is empty, the reason is the exit signal name. + </p> + <p>The <c>tuple()</c> reason are other errors like the <c>{exit_status,integer()}</c> if the exit status is not 0. + </p> </item> - <tag><c>ssh_connection_ref() =</c></tag> + <tag><c>connection_ref() =</c></tag> <item><p><c>opaque()</c> - as returned by <seealso marker="ssh#connect-3"><c>ssh:connect/3</c></seealso></p></item> @@ -78,7 +82,7 @@ <funcs> <func> - <name>apread(ChannelPid, Handle, Position, Len) -> {async, N} | {error, reason()}</name> + <name since="">apread(ChannelPid, Handle, Position, Len) -> {async, N} | {error, reason()}</name> <fsummary>Reads asynchronously from an open file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -94,7 +98,7 @@ </func> <func> - <name>apwrite(ChannelPid, Handle, Position, Data) -> {async, N} | {error, reason()}</name> + <name since="">apwrite(ChannelPid, Handle, Position, Data) -> {async, N} | {error, reason()}</name> <fsummary>Writes asynchronously to an open file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -112,7 +116,7 @@ </func> <func> - <name>aread(ChannelPid, Handle, Len) -> {async, N} | {error, reason()}</name> + <name since="">aread(ChannelPid, Handle, Len) -> {async, N} | {error, reason()}</name> <fsummary>Reads asynchronously from an open file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -133,7 +137,7 @@ </func> <func> - <name>awrite(ChannelPid, Handle, Data) -> {async, N} | {error, reason()}</name> + <name since="">awrite(ChannelPid, Handle, Data) -> {async, N} | {error, reason()}</name> <fsummary>Writes asynchronously to an open file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -155,8 +159,8 @@ </func> <func> - <name>close(ChannelPid, Handle) -></name> - <name>close(ChannelPid, Handle, Timeout) -> ok | {error, reason()}</name> + <name since="">close(ChannelPid, Handle) -></name> + <name since="">close(ChannelPid, Handle, Timeout) -> ok | {error, reason()}</name> <fsummary>Closes an open handle.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -169,8 +173,8 @@ </func> <func> - <name>delete(ChannelPid, Name) -></name> - <name>delete(ChannelPid, Name, Timeout) -> ok | {error, reason()}</name> + <name since="">delete(ChannelPid, Name) -></name> + <name since="">delete(ChannelPid, Name, Timeout) -> ok | {error, reason()}</name> <fsummary>Deletes a file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -184,8 +188,8 @@ </func> <func> - <name>del_dir(ChannelPid, Name) -></name> - <name>del_dir(ChannelPid, Name, Timeout) -> ok | {error, reason()}</name> + <name since="">del_dir(ChannelPid, Name) -></name> + <name since="">del_dir(ChannelPid, Name, Timeout) -> ok | {error, reason()}</name> <fsummary>Deletes an empty directory.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -200,8 +204,8 @@ </func> <func> - <name>list_dir(ChannelPid, Path) -></name> - <name>list_dir(ChannelPid, Path, Timeout) -> {ok, Filenames} | {error, reason()}</name> + <name since="">list_dir(ChannelPid, Path) -></name> + <name since="">list_dir(ChannelPid, Path, Timeout) -> {ok, Filenames} | {error, reason()}</name> <fsummary>Lists the directory.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -217,8 +221,8 @@ </func> <func> - <name>make_dir(ChannelPid, Name) -></name> - <name>make_dir(ChannelPid, Name, Timeout) -> ok | {error, reason()}</name> + <name since="">make_dir(ChannelPid, Name) -></name> + <name since="">make_dir(ChannelPid, Name, Timeout) -> ok | {error, reason()}</name> <fsummary>Creates a directory.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -233,8 +237,8 @@ </func> <func> - <name>make_symlink(ChannelPid, Name, Target) -></name> - <name>make_symlink(ChannelPid, Name, Target, Timeout) -> ok | {error, reason()}</name> + <name since="">make_symlink(ChannelPid, Name, Target) -></name> + <name since="">make_symlink(ChannelPid, Name, Target, Timeout) -> ok | {error, reason()}</name> <fsummary>Creates a symbolic link.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -249,8 +253,8 @@ </func> <func> - <name>open(ChannelPid, File, Mode) -></name> - <name>open(ChannelPid, File, Mode, Timeout) -> {ok, Handle} | {error, reason()}</name> + <name since="">open(ChannelPid, File, Mode) -></name> + <name since="">open(ChannelPid, File, Mode, Timeout) -> {ok, Handle} | {error, reason()}</name> <fsummary>Opens a file and returns a handle.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -266,8 +270,8 @@ </desc> </func> <func> - <name>opendir(ChannelPid, Path) -></name> - <name>opendir(ChannelPid, Path, Timeout) -> {ok, Handle} | {error, reason()}</name> + <name since="">opendir(ChannelPid, Path) -></name> + <name since="">opendir(ChannelPid, Path, Timeout) -> {ok, Handle} | {error, reason()}</name> <fsummary>Opens a directory and returns a handle.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -281,8 +285,8 @@ </func> <func> - <name>open_tar(ChannelPid, Path, Mode) -></name> - <name>open_tar(ChannelPid, Path, Mode, Timeout) -> {ok, Handle} | {error, reason()}</name> + <name since="OTP 17.4">open_tar(ChannelPid, Path, Mode) -></name> + <name since="OTP 17.4">open_tar(ChannelPid, Path, Mode, Timeout) -> {ok, Handle} | {error, reason()}</name> <fsummary>Opens a tar file on the server to which <c>ChannelPid</c> is connected and returns a handle.</fsummary> <type> @@ -335,8 +339,8 @@ </func> <func> - <name>position(ChannelPid, Handle, Location) -></name> - <name>position(ChannelPid, Handle, Location, Timeout) -> {ok, NewPosition | {error, reason()}</name> + <name since="">position(ChannelPid, Handle, Location) -></name> + <name since="">position(ChannelPid, Handle, Location, Timeout) -> {ok, NewPosition | {error, reason()}</name> <fsummary>Sets the file position of a file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -380,8 +384,8 @@ </func> <func> - <name>pread(ChannelPid, Handle, Position, Len) -></name> - <name>pread(ChannelPid, Handle, Position, Len, Timeout) -> {ok, Data} | eof | {error, reason()}</name> + <name since="">pread(ChannelPid, Handle, Position, Len) -></name> + <name since="">pread(ChannelPid, Handle, Position, Len, Timeout) -> {ok, Data} | eof | {error, reason()}</name> <fsummary>Reads from an open file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -398,8 +402,8 @@ </func> <func> - <name>pwrite(ChannelPid, Handle, Position, Data) -> ok</name> - <name>pwrite(ChannelPid, Handle, Position, Data, Timeout) -> ok | {error, reason()}</name> + <name since="">pwrite(ChannelPid, Handle, Position, Data) -> ok</name> + <name since="">pwrite(ChannelPid, Handle, Position, Data, Timeout) -> ok | {error, reason()}</name> <fsummary>Writes to an open file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -415,13 +419,12 @@ </func> <func> - <name>read(ChannelPid, Handle, Len) -></name> - <name>read(ChannelPid, Handle, Len, Timeout) -> {ok, Data} | eof | {error, reason()}</name> + <name since="">read(ChannelPid, Handle, Len) -></name> + <name since="">read(ChannelPid, Handle, Len, Timeout) -> {ok, Data} | eof | {error, reason()}</name> <fsummary>Reads from an open file.</fsummary> <type> <v>ChannelPid = pid()</v> <v>Handle = term()</v> - <v>Position = integer()</v> <v>Len = integer()</v> <v>Timeout = timeout()</v> <v>Data = string() | binary()</v> @@ -438,8 +441,8 @@ </func> <func> - <name>read_file(ChannelPid, File) -></name> - <name>read_file(ChannelPid, File, Timeout) -> {ok, Data} | {error, reason()}</name> + <name since="">read_file(ChannelPid, File) -></name> + <name since="">read_file(ChannelPid, File, Timeout) -> {ok, Data} | {error, reason()}</name> <fsummary>Reads a file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -453,8 +456,8 @@ </func> <func> - <name>read_file_info(ChannelPid, Name) -></name> - <name>read_file_info(ChannelPid, Name, Timeout) -> {ok, FileInfo} | {error, reason()}</name> + <name since="">read_file_info(ChannelPid, Name) -></name> + <name since="">read_file_info(ChannelPid, Name, Timeout) -> {ok, FileInfo} | {error, reason()}</name> <fsummary>Gets information about a file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -478,8 +481,8 @@ </func> <func> - <name>read_link(ChannelPid, Name) -></name> - <name>read_link(ChannelPid, Name, Timeout) -> {ok, Target} | {error, reason()}</name> + <name since="">read_link(ChannelPid, Name) -></name> + <name since="">read_link(ChannelPid, Name, Timeout) -> {ok, Target} | {error, reason()}</name> <fsummary>Reads symbolic link.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -493,8 +496,8 @@ </func> <func> - <name>read_link_info(ChannelPid, Name) -> {ok, FileInfo} | {error, reason()}</name> - <name>read_link_info(ChannelPid, Name, Timeout) -> {ok, FileInfo} | {error, reason()}</name> + <name since="">read_link_info(ChannelPid, Name) -> {ok, FileInfo} | {error, reason()}</name> + <name since="">read_link_info(ChannelPid, Name, Timeout) -> {ok, FileInfo} | {error, reason()}</name> <fsummary>Gets information about a symbolic link.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -514,8 +517,8 @@ </func> <func> - <name>rename(ChannelPid, OldName, NewName) -> </name> - <name>rename(ChannelPid, OldName, NewName, Timeout) -> ok | {error, reason()}</name> + <name since="">rename(ChannelPid, OldName, NewName) -> </name> + <name since="">rename(ChannelPid, OldName, NewName, Timeout) -> ok | {error, reason()}</name> <fsummary>Renames a file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -531,22 +534,22 @@ </func> <func> - <name>start_channel(ConnectionRef) -></name> - <name>start_channel(ConnectionRef, Options) -> + <name since="">start_channel(ConnectionRef) -></name> + <name since="">start_channel(ConnectionRef, Options) -> {ok, Pid} | {error, reason()|term()}</name> - <name>start_channel(Host, Options) -></name> - <name>start_channel(Host, Port, Options) -> + <name since="">start_channel(Host, Options) -></name> + <name since="">start_channel(Host, Port, Options) -> {ok, Pid, ConnectionRef} | {error, reason()|term()}</name> - <name>start_channel(TcpSocket) -></name> - <name>start_channel(TcpSocket, Options) -> + <name since="">start_channel(TcpSocket) -></name> + <name since="">start_channel(TcpSocket, Options) -> {ok, Pid, ConnectionRef} | {error, reason()|term()}</name> <fsummary>Starts an SFTP client.</fsummary> <type> <v>Host = string()</v> - <v>ConnectionRef = ssh_connection_ref()</v> + <v>ConnectionRef = connection_ref()</v> <v>Port = integer()</v> <v>TcpSocket = port()</v> <d>The socket is supposed to be from <seealso marker="kernel:gen_tcp#connect-3">gen_tcp:connect</seealso> or <seealso marker="kernel:gen_tcp#accept-1">gen_tcp:accept</seealso> with option <c>{active,false}</c></d> @@ -591,7 +594,7 @@ </func> <func> - <name>stop_channel(ChannelPid) -> ok</name> + <name since="">stop_channel(ChannelPid) -> ok</name> <fsummary>Stops the SFTP client channel.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -603,8 +606,8 @@ </func> <func> - <name>write(ChannelPid, Handle, Data) -></name> - <name>write(ChannelPid, Handle, Data, Timeout) -> ok | {error, reason()}</name> + <name since="">write(ChannelPid, Handle, Data) -></name> + <name since="">write(ChannelPid, Handle, Data, Timeout) -> ok | {error, reason()}</name> <fsummary>Writes to an open file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -622,8 +625,8 @@ </func> <func> - <name>write_file(ChannelPid, File, Iolist) -></name> - <name>write_file(ChannelPid, File, Iolist, Timeout) -> ok | {error, reason()}</name> + <name since="">write_file(ChannelPid, File, Iolist) -></name> + <name since="">write_file(ChannelPid, File, Iolist, Timeout) -> ok | {error, reason()}</name> <fsummary>Writes a file.</fsummary> <type> <v>ChannelPid = pid()</v> @@ -638,8 +641,8 @@ </func> <func> - <name>write_file_info(ChannelPid, Name, Info) -></name> - <name>write_file_info(ChannelPid, Name, Info, Timeout) -> ok | {error, reason()}</name> + <name since="">write_file_info(ChannelPid, Name, Info) -></name> + <name since="">write_file_info(ChannelPid, Name, Info, Timeout) -> ok | {error, reason()}</name> <fsummary>Writes information for a file.</fsummary> <type> <v>ChannelPid = pid()</v> diff --git a/lib/ssh/doc/src/ssh_sftpd.xml b/lib/ssh/doc/src/ssh_sftpd.xml index 1be29b3b29..ee72784add 100644 --- a/lib/ssh/doc/src/ssh_sftpd.xml +++ b/lib/ssh/doc/src/ssh_sftpd.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>2005</year><year>2016</year> + <year>2005</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -29,7 +29,7 @@ <rev></rev> <file>ssh_sftpd.sgml</file> </header> - <module>ssh_sftpd</module> + <module since="">ssh_sftpd</module> <modulesummary>Specifies the channel process to handle an SFTP subsystem.</modulesummary> <description> <p>Specifies a channel process to handle an SFTP subsystem.</p> @@ -44,15 +44,14 @@ <item><p><c>"sftp"</c></p></item> <tag><c>channel_callback() =</c></tag> <item><p><c>atom()</c> - Name of the Erlang module implementing the subsystem using the - <c>ssh_channel</c> behavior, see the - <seealso marker="ssh_channel">ssh_channel(3)</seealso> manual page.</p></item> + <seealso marker="ssh_server_channel">ssh_server_channel</seealso> (replaces ssh_daemon_channel) behaviour.</p></item> <tag><c>channel_init_args() =</c></tag> <item><p><c>list()</c> - The one given as argument to function <c>subsystem_spec/1</c>.</p></item> </taglist> </section> <funcs> <func> - <name>subsystem_spec(Options) -> subsystem_spec()</name> + <name since="">subsystem_spec(Options) -> subsystem_spec()</name> <fsummary>Returns the subsystem specification that allows an SSH daemon to handle the subsystem "sftp".</fsummary> <type> <v>Options = [{Option, Value}]</v> diff --git a/lib/ssh/doc/src/terminology.xml b/lib/ssh/doc/src/terminology.xml new file mode 100644 index 0000000000..db1e08970d --- /dev/null +++ b/lib/ssh/doc/src/terminology.xml @@ -0,0 +1,185 @@ +<?xml version="1.0" encoding="utf-8" ?> +<!DOCTYPE chapter SYSTEM "chapter.dtd"> + +<chapter> + <header> + <copyright> + <year>2018</year> + <year>2018</year> + <holder>Ericsson AB. All Rights Reserved.</holder> + </copyright> + <legalnotice> + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + </legalnotice> + + <title>Terminology</title> + <prepared></prepared> + <docno></docno> + <approved></approved> + <date></date> + <rev></rev> + <file>terminology.xml</file> + </header> + + <section> + <title>General Information</title> + <p>In the following terms that may cause confusion are explained. + </p> + </section> + + <section> + <title>The term "user"</title> + <p>A "user" is a term that everyone understands intuitively. However, the understandings may differ which can + cause confusion. + </p> + <p>The term is used differently in <url href="http://www.openssh.com">OpenSSH</url> and SSH in Erlang/OTP. + The reason is the different environments and use cases that are not immediatly obvious. + </p> + <p>This chapter aims at explaining the differences and giving a rationale for why Erlang/OTP handles "user" as + it does. + </p> + + <section> + <title>In OpenSSH</title> + <p>Many have been in contact with the command 'ssh' on a Linux machine (or similar) to remotly log in on + another machine. One types + </p> + <code>ssh host</code> + <p>to log in on the machine named <c>host</c>. The command prompts for your password on the remote <c>host</c> and + then you can read, write and execute as your <i>user name</i> has rights on the remote <c>host</c>. There are + stronger variants with pre-distributed keys or certificates, but that are for now just details in the + authentication process. + </p> + <p>You could log in as the user <c>anotheruser</c> with + </p> + <code>ssh anotheruser@host</code> + <p>and you will then be enabled to act as <c>anotheruser</c> on the <c>host</c> if authorized correctly. + </p> + <p>So what does <i>"your user name has rights"</i> mean? In a UNIX/Linux/etc context it is exactly as that context: + The <i>user</i> could read, write and execute programs according to the OS rules. + In addition, the user has a home directory (<c>$HOME</c>) and there is a <c>$HOME/.ssh/</c> directory + with ssh-specific files. + </p> + <section> + <title>SSH password authentication</title> + <p>When SSH tries to log in to a host, the ssh protocol communicates the user name (as a string) and a password. + The remote ssh server checks that there is such a user defined and that the provided password is acceptable. + </p> + <p>If so, the user is authorized. + </p> + </section> + <section> + <title>SSH public key authentication</title> + <p>This is a stronger method where the ssh protocol brings the user name, the user's public key and some + cryptographic information which we could ignore here. + </p> + <p>The ssh server on the remote host checks: + </p> + <list> + <item>That the <i>user</i> has a home directory,</item> + <item>that home directory contains a .ssh/ directory and</item> + <item>the .ssh/ directory contains the public key just received in the <c>authorized_keys</c> file</item> + </list> + <p>if so, the user is authorized. + </p> + </section> + <section> + <title>The SSH server on UNIX/Linux/etc after a succesful authentication</title> + <p>After a succesful incoming authentication, a new process runs as the just authenticated user.</p> + <p>Next step is to start a service according to the ssh request. In case of a request of a shell, + a new one is started which handles the OS-commands that arrives from the client (that's "you"). + </p> + <p>In case of a sftp request, an sftp server is started in with the user's rights. So it could read, write or delete + files if allowed for that user. + </p> + </section> + </section> + + <section> + <title>In Erlang/OTP SSH</title> + <p>For the Erlang/OTP SSH server the situation is different. The server executes in an Erlang process + in the Erlang emulator which in turn executes in an OS process. The emulator does not try to change its + user when authenticated over the SSH protocol. + So the remote user name is only for authentication purposes in the Erlang/OTP SSH application. + </p> + <section> + <title>Password authentication in Erlang SSH</title> + <p>The Erlang/OTP SSH server checks the user name and password in the following order: + </p> + <list type="ordered"> + <item>If a + <seealso marker="ssh:ssh#option-pwdfun"><c>pwdfun</c></seealso> + is defined, that one is called and the returned boolean is the authentication result. + </item> + <item>Else, if the + <seealso marker="ssh:ssh#option-user_passwords"><c>user_passwords</c></seealso> + option is defined and the username and the password matches, the authentication is a success. + </item> + <item>Else, if the option + <seealso marker="ssh:ssh#option-password"><c>password</c></seealso> + is defined and matches the password the authentication is a success. + Note that the use of this option is not recommended in non-test code. + </item> + </list> + </section> + <section> + <title>Public key authentication in Erlang SSH</title> + <p>The user name, public key and cryptographic data (a signature) that is sent by the client, are used as follows + (some steps left out for clearity): + </p> + <list type="ordered"> + <item>A callback module is selected using the options + <seealso marker="ssh:ssh#type-key_cb_common_option"><c>key_cb</c></seealso>. + </item> + <item>The callback module is used to check that the provided public key is one of the user's pre-stored. + In case of the default callback module, the files <c>authorized_keys</c> and <c>authorized_keys2</c> + are searched in a directory found in the following order: + <list> + <item>If the option + <seealso marker="ssh:ssh_file#type-user_dir_fun_common_option"><c>user_dir_fun</c></seealso> + is defined, that fun is called and the returned directory is used, + </item> + <item>Else, If the option + <seealso marker="ssh:ssh_file#type-user_dir_common_option"><c>user_dir</c></seealso> + is defined, that directory is used, + </item> + <item>Else the subdirectory <c>.ssh</c> in the home directory of the user executing + the OS process of the Erlang emulator is used. + </item> + </list> + If the provided public key is not found, the authentication fails. + </item> + <item>Finally, if the provided public key is found, the signature provided by the client is checked with + the public key. + </item> + </list> + </section> + <section> + <title>The Erlang/OTP SSH server after a succesful authentication</title> + <p>After a successful authentication an <i>Erlang process</i> is handling the service request from the remote + ssh client. The rights of that process are those of the user of the OS process running the Erlang emulator. + </p> + <p>If a shell service request arrives to the server, an <i>Erlang shell</i> is opened in the server's emulator. + The rights in that shell is independent of the just authenticated user. + </p> + <p>In case of an sftp request, an sftp server is started with the rights of the user of the Erlang emulator's OS + process. So with sftp the authenticated user does not influence the rights. + </p> + <p>So after an authentication, the user name is not used anymore and has no influence. + </p> + </section> + </section> + </section> +</chapter> + diff --git a/lib/ssh/doc/src/usersguide.xml b/lib/ssh/doc/src/usersguide.xml index d902df6848..8a4df208d8 100644 --- a/lib/ssh/doc/src/usersguide.xml +++ b/lib/ssh/doc/src/usersguide.xml @@ -4,7 +4,7 @@ <part xmlns:xi="http://www.w3.org/2001/XInclude"> <header> <copyright> - <year>2012</year><year>2016</year> + <year>2012</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -36,5 +36,6 @@ </description> <xi:include href="introduction.xml"/> <xi:include href="using_ssh.xml"/> + <xi:include href="terminology.xml"/> <xi:include href="configure_algos.xml"/> </part> diff --git a/lib/ssh/doc/src/using_ssh.xml b/lib/ssh/doc/src/using_ssh.xml index ab307624e6..4455d5ecc5 100644 --- a/lib/ssh/doc/src/using_ssh.xml +++ b/lib/ssh/doc/src/using_ssh.xml @@ -5,7 +5,7 @@ <header> <copyright> <year>2012</year> - <year>2017</year> + <year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -74,16 +74,17 @@ <marker id="Running an Erlang ssh Daemon"></marker> <title>Running an Erlang ssh Daemon</title> - <p>The <c>system_dir</c> option must be a directory containing a host - key file and it defaults to <c>/etc/ssh</c>. For details, see Section - Configuration Files in <seealso - marker="SSH_app">ssh(6)</seealso>. + <p>The + <seealso marker="ssh_file#type-system_dir_daemon_option"><c>system_dir</c></seealso> + option must be a directory containing a host key file and it defaults to <c>/etc/ssh</c>. + For details, see Section Configuration Files in <seealso marker="SSH_app">ssh(6)</seealso>. </p> <note><p>Normally, the <c>/etc/ssh</c> directory is only readable by root.</p> </note> - <p>The option <c>user_dir</c> defaults to directory <c>users ~/.ssh</c>.</p> + <p>The option <seealso marker="ssh_file#type-user_dir_common_option"><c>user_dir</c></seealso> + defaults to directory <c>users ~/.ssh</c>.</p> <p><em>Step 1.</em> To run the example without root privileges, generate new keys and host keys:</p> @@ -298,6 +299,7 @@ ok = erl_tar:close(HandleRead), </section> <section> + <marker id="usersguide_creating_a_subsystem"/> <title>Creating a Subsystem</title> <p>A small <c>ssh</c> subsystem that echoes N bytes can be implemented as shown @@ -305,7 +307,7 @@ ok = erl_tar:close(HandleRead), <code type="erl" > -module(ssh_echo_server). --behaviour(ssh_daemon_channel). +-behaviour(ssh_server_channel). % replaces ssh_daemon_channel -record(state, { n, id, @@ -383,7 +385,7 @@ terminate(_Reason, _State) -> {ssh_msg, <0.57.0>, {closed, 0}} 7> {error, closed} = ssh_connection:send(ConnectionRef, ChannelId, "10", infinity). </code> -<p>See also <seealso marker="ssh_channel"> ssh_channel(3)</seealso>.</p> +<p>See also <seealso marker="ssh_client_channel">ssh_client_channel(3)</seealso> (replaces ssh_channel(3)).</p> </section> diff --git a/lib/ssh/src/Makefile b/lib/ssh/src/Makefile index 9e8d80c71f..6d64a45112 100644 --- a/lib/ssh/src/Makefile +++ b/lib/ssh/src/Makefile @@ -1,7 +1,7 @@ # # %CopyrightBegin% # -# Copyright Ericsson AB 2004-2017. All Rights Reserved. +# Copyright Ericsson AB 2004-2018. All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. @@ -40,42 +40,44 @@ RELSYSDIR = $(RELEASE_PATH)/lib/ssh-$(VSN) # Behaviour (api) modules are first so they are compiled when # the compiler reaches a callback module using them. BEHAVIOUR_MODULES= \ - ssh_sftpd_file_api \ - ssh_channel \ - ssh_daemon_channel \ ssh_client_key_api \ - ssh_server_key_api + ssh_daemon_channel \ + ssh_server_channel \ + ssh_server_key_api \ + ssh_sftpd_file_api \ + ssh_channel \ + ssh_client_channel MODULES= \ ssh \ - ssh_sup \ - sshc_sup \ - sshd_sup \ - ssh_options \ - ssh_connection_sup \ - ssh_connection \ - ssh_connection_handler \ - ssh_dbg \ - ssh_shell \ - ssh_system_sup \ - ssh_subsystem_sup \ - ssh_channel_sup \ - ssh_acceptor_sup \ ssh_acceptor \ + ssh_acceptor_sup \ ssh_app \ ssh_auth\ ssh_bits \ ssh_cli \ + ssh_connection \ + ssh_connection_handler \ + ssh_connection_sup \ + ssh_dbg \ ssh_file \ - ssh_io \ ssh_info \ + ssh_io \ ssh_message \ ssh_no_io \ + ssh_options \ + ssh_server_channel_sup \ ssh_sftp \ ssh_sftpd \ ssh_sftpd_file\ + ssh_shell \ + ssh_subsystem_sup \ + ssh_sup \ + ssh_system_sup \ ssh_transport \ - ssh_xfer + ssh_xfer \ + sshc_sup \ + sshd_sup HRL_FILES = @@ -97,7 +99,7 @@ APP_TARGET= $(EBIN)/$(APP_FILE) APPUP_SRC= $(APPUP_FILE).src APPUP_TARGET= $(EBIN)/$(APPUP_FILE) -INTERNAL_HRL_FILES = ssh_auth.hrl ssh_connect.hrl ssh_transport.hrl ssh.hrl ssh_userauth.hrl ssh_xfer.hrl ssh_dbg.hrl +INTERNAL_HRL_FILES = ssh_auth.hrl ssh_connect.hrl ssh_transport.hrl ssh.hrl ssh_userauth.hrl ssh_xfer.hrl # ---------------------------------------------------- # FLAGS @@ -169,7 +171,7 @@ $(EBIN)/ssh_connection_handler.$(EMULATOR): ssh_connection_handler.erl ssh.hrl \ $(EBIN)/ssh_shell.$(EMULATOR): ssh_shell.erl ssh_connect.hrl $(EBIN)/ssh_system_sup.$(EMULATOR): ssh_system_sup.erl ssh.hrl $(EBIN)/ssh_subsystem_sup.$(EMULATOR): ssh_subsystem_sup.erl -$(EBIN)/ssh_channel_sup.$(EMULATOR): ssh_channel_sup.erl +$(EBIN)/ssh_server_channel_sup.$(EMULATOR): ssh_server_channel_sup.erl $(EBIN)/ssh_acceptor_sup.$(EMULATOR): ssh_acceptor_sup.erl ssh.hrl $(EBIN)/ssh_acceptor.$(EMULATOR): ssh_acceptor.erl ssh.hrl $(EBIN)/ssh_app.$(EMULATOR): ssh_app.erl @@ -208,8 +210,10 @@ $(EBIN)/ssh_transport.$(EMULATOR): ssh_transport.erl \ ssh_transport.hrl ssh.hrl $(EBIN)/ssh_xfer.$(EMULATOR): ssh_xfer.erl ssh.hrl ssh_xfer.hrl $(EBIN)/ssh_sftpd_file_api.$(EMULATOR): ssh_sftpd_file_api.erl +$(EBIN)/ssh_client_channel.$(EMULATOR): ssh_client_channel.erl ssh_connect.hrl $(EBIN)/ssh_channel.$(EMULATOR): ssh_channel.erl ssh_connect.hrl $(EBIN)/ssh_daemon_channel.$(EMULATOR): ssh_daemon_channel.erl +$(EBIN)/ssh_server_channel.$(EMULATOR): ssh_server_channel.erl $(EBIN)/ssh_client_key_api.$(EMULATOR): ssh_client_key_api.erl \ ../../public_key/include/public_key.hrl \ ../../public_key/include/OTP-PUB-KEY.hrl \ diff --git a/lib/ssh/src/ssh.app.src b/lib/ssh/src/ssh.app.src index 4a22322333..410061cded 100644 --- a/lib/ssh/src/ssh.app.src +++ b/lib/ssh/src/ssh.app.src @@ -12,9 +12,9 @@ ssh_message, ssh_bits, ssh_cli, + ssh_client_channel, ssh_client_key_api, ssh_channel, - ssh_channel_sup, ssh_connection, ssh_connection_handler, ssh_connection_sup, @@ -27,6 +27,8 @@ ssh_io, ssh_info, ssh_no_io, + ssh_server_channel, + ssh_server_channel_sup, ssh_server_key_api, ssh_sftp, ssh_sftpd, diff --git a/lib/ssh/src/ssh.erl b/lib/ssh/src/ssh.erl index 25d537c624..ff5aee14d7 100644 --- a/lib/ssh/src/ssh.erl +++ b/lib/ssh/src/ssh.erl @@ -1,7 +1,7 @@ % %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2017. All Rights Reserved. +%% Copyright Ericsson AB 2004-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -41,35 +41,51 @@ shell/1, shell/2, shell/3 ]). +%%% "Deprecated" types export: +-export_type([ssh_daemon_ref/0, ssh_connection_ref/0, ssh_channel_id/0]). +-opaque ssh_daemon_ref() :: daemon_ref(). +-opaque ssh_connection_ref() :: connection_ref(). +-opaque ssh_channel_id() :: channel_id(). + + %%% Type exports --export_type([ssh_daemon_ref/0, - ssh_connection_ref/0, - ssh_channel_id/0, +-export_type([daemon_ref/0, + connection_ref/0, + channel_id/0, + client_options/0, client_option/0, + daemon_options/0, daemon_option/0, + common_options/0, role/0, subsystem_spec/0, - subsystem_name/0, - channel_callback/0, - channel_init_args/0, algs_list/0, + double_algs/1, + modify_algs_list/0, alg_entry/0, - simple_algs/0, - double_algs/0 + kex_alg/0, + pubkey_alg/0, + cipher_alg/0, + mac_alg/0, + compression_alg/0, + ip_port/0 ]). --opaque ssh_daemon_ref() :: daemon_ref() . --opaque ssh_connection_ref() :: connection_ref() . --opaque ssh_channel_id() :: channel_id(). + +-opaque daemon_ref() :: pid() . +-opaque channel_id() :: non_neg_integer(). +-type connection_ref() :: pid(). % should be -opaque, but that gives problems %%-------------------------------------------------------------------- --spec start() -> ok | {error, term()}. --spec start(permanent | transient | temporary) -> ok | {error, term()}. -%% %% Description: Starts the ssh application. Default type %% is temporary. see application(3) %%-------------------------------------------------------------------- +-spec start() -> ok | {error, term()}. + start() -> start(temporary). +-spec start(Type) -> ok | {error, term()} when + Type :: permanent | transient | temporary . + start(Type) -> case application:ensure_all_started(ssh, Type) of {ok, _} -> @@ -79,48 +95,57 @@ start(Type) -> end. %%-------------------------------------------------------------------- --spec stop() -> ok | {error, term()}. -%% %% Description: Stops the ssh application. %%-------------------------------------------------------------------- +-spec stop() -> ok | {error, term()}. + stop() -> application:stop(ssh). %%-------------------------------------------------------------------- --spec connect(inet:socket(), proplists:proplist()) -> ok_error(connection_ref()). +%% Description: Starts an ssh connection. +%%-------------------------------------------------------------------- +-spec connect(OpenTcpSocket, Options) -> {ok,connection_ref()} | {error,term()} when + OpenTcpSocket :: open_socket(), + Options :: client_options(). --spec connect(inet:socket(), proplists:proplist(), timeout()) -> ok_error(connection_ref()) - ; (string(), inet:port_number(), proplists:proplist()) -> ok_error(connection_ref()). +connect(OpenTcpSocket, Options) when is_port(OpenTcpSocket), + is_list(Options) -> + connect(OpenTcpSocket, Options, infinity). --spec connect(string(), inet:port_number(), proplists:proplist(), timeout()) -> ok_error(connection_ref()). -%% -%% Description: Starts an ssh connection. -%%-------------------------------------------------------------------- -connect(Socket, UserOptions) when is_port(Socket), - is_list(UserOptions) -> - connect(Socket, UserOptions, infinity). +-spec connect(open_socket(), client_options(), timeout()) -> + {ok,connection_ref()} | {error,term()} + ; (host(), inet:port_number(), client_options()) -> + {ok,connection_ref()} | {error,term()}. -connect(Socket, UserOptions, Timeout) when is_port(Socket), - is_list(UserOptions) -> +connect(Socket, UserOptions, NegotiationTimeout) when is_port(Socket), + is_list(UserOptions) -> case ssh_options:handle_options(client, UserOptions) of {error, Error} -> {error, Error}; Options -> case valid_socket_to_use(Socket, ?GET_OPT(transport,Options)) of ok -> - {ok, {Host,_Port}} = inet:sockname(Socket), + {ok, {Host,_Port}} = inet:peername(Socket), Opts = ?PUT_INTERNAL_OPT([{user_pid,self()}, {host,Host}], Options), - ssh_connection_handler:start_connection(client, Socket, Opts, Timeout); + ssh_connection_handler:start_connection(client, Socket, Opts, NegotiationTimeout); {error,SockError} -> {error,SockError} end end; -connect(Host, Port, UserOptions) when is_integer(Port), - Port>0, - is_list(UserOptions) -> - connect(Host, Port, UserOptions, infinity). +connect(Host, Port, Options) when is_integer(Port), + Port>0, + is_list(Options) -> + connect(Host, Port, Options, infinity). + + +-spec connect(Host, Port, Options, NegotiationTimeout) -> {ok,connection_ref()} | {error,term()} when + Host :: host(), + Port :: inet:port_number(), + Options :: client_options(), + NegotiationTimeout :: timeout(). connect(Host0, Port, UserOptions, Timeout) when is_integer(Port), Port>0, @@ -148,7 +173,8 @@ connect(Host0, Port, UserOptions, Timeout) when is_integer(Port), end. %%-------------------------------------------------------------------- --spec close(pid()) -> ok. +-spec close(ConnectionRef) -> ok | {error,term()} when + ConnectionRef :: connection_ref() . %% %% Description: Closes an ssh connection. %%-------------------------------------------------------------------- @@ -156,15 +182,25 @@ close(ConnectionRef) -> ssh_connection_handler:stop(ConnectionRef). %%-------------------------------------------------------------------- --spec connection_info(pid(), [atom()]) -> [{atom(), term()}]. -%% %% Description: Retrieves information about a connection. %%-------------------------------------------------------------------- -connection_info(ConnectionRef, Options) -> - ssh_connection_handler:connection_info(ConnectionRef, Options). +-spec connection_info(ConnectionRef, Keys) -> ConnectionInfo when + ConnectionRef :: connection_ref(), + Keys :: [client_version | server_version | user | peer | sockname], + ConnectionInfo :: [{client_version, Version} + | {server_version, Version} + | {user,string()} + | {peer, {inet:hostname(), ip_port()}} + | {sockname, ip_port()} + ], + Version :: {ProtocolVersion, VersionString::string()}, + ProtocolVersion :: {Major::pos_integer(), Minor::non_neg_integer()} . + +connection_info(Connection, Options) -> + ssh_connection_handler:connection_info(Connection, Options). %%-------------------------------------------------------------------- --spec channel_info(pid(), channel_id(), [atom()]) -> [{atom(), term()}]. +-spec channel_info(connection_ref(), channel_id(), [atom()]) -> proplists:proplist(). %% %% Description: Retrieves information about a connection. %%-------------------------------------------------------------------- @@ -172,18 +208,17 @@ channel_info(ConnectionRef, ChannelId, Options) -> ssh_connection_handler:channel_info(ConnectionRef, ChannelId, Options). %%-------------------------------------------------------------------- --spec daemon(inet:port_number()) -> ok_error(daemon_ref()). --spec daemon(inet:port_number()|inet:socket(), proplists:proplist()) -> ok_error(daemon_ref()). --spec daemon(any | inet:ip_address(), inet:port_number(), proplists:proplist()) -> ok_error(daemon_ref()) - ;(socket, inet:socket(), proplists:proplist()) -> ok_error(daemon_ref()) - . - %% Description: Starts a server listening for SSH connections %% on the given port. %%-------------------------------------------------------------------- +-spec daemon(inet:port_number()) -> {ok,daemon_ref()} | {error,term()}. + daemon(Port) -> daemon(Port, []). + +-spec daemon(inet:port_number()|open_socket(), daemon_options()) -> {ok,daemon_ref()} | {error,term()}. + daemon(Socket, UserOptions) when is_port(Socket) -> try #{} = Options = ssh_options:handle_options(server, UserOptions), @@ -226,30 +261,47 @@ daemon(Port, UserOptions) when 0 =< Port, Port =< 65535 -> daemon(any, Port, UserOptions). +-spec daemon(any | inet:ip_address(), inet:port_number(), daemon_options()) -> {ok,daemon_ref()} | {error,term()} + ;(socket, open_socket(), daemon_options()) -> {ok,daemon_ref()} | {error,term()} + . + daemon(Host0, Port0, UserOptions0) when 0 =< Port0, Port0 =< 65535, Host0 == any ; Host0 == loopback ; is_tuple(Host0) -> try {Host1, UserOptions} = handle_daemon_args(Host0, UserOptions0), #{} = Options0 = ssh_options:handle_options(server, UserOptions), - - {{Host,Port}, ListenSocket} = - open_listen_socket(Host1, Port0, Options0), - - %% Now Host,Port is what to use for the supervisor to register its name, - %% and ListenSocket is for listening on connections. But it is still owned - %% by self()... - - finalize_start(Host, Port, ?GET_OPT(profile, Options0), - ?PUT_INTERNAL_OPT({lsocket,{ListenSocket,self()}}, Options0), - fun(Opts, Result) -> - {_, Callback, _} = ?GET_OPT(transport, Opts), - receive - {request_control, ListenSocket, ReqPid} -> - ok = Callback:controlling_process(ListenSocket, ReqPid), - ReqPid ! {its_yours,ListenSocket}, - Result - end - end) + {open_listen_socket(Host1, Port0, Options0), Options0} + of + {{{Host,Port}, ListenSocket}, Options1} -> + try + %% Now Host,Port is what to use for the supervisor to register its name, + %% and ListenSocket is for listening on connections. But it is still owned + %% by self()... + finalize_start(Host, Port, ?GET_OPT(profile, Options1), + ?PUT_INTERNAL_OPT({lsocket,{ListenSocket,self()}}, Options1), + fun(Opts, Result) -> + {_, Callback, _} = ?GET_OPT(transport, Opts), + receive + {request_control, ListenSocket, ReqPid} -> + ok = Callback:controlling_process(ListenSocket, ReqPid), + ReqPid ! {its_yours,ListenSocket}, + Result + end + end) + of + {error,Err} -> + close_listen_socket(ListenSocket, Options1), + {error,Err}; + OK -> + OK + catch + error:Error -> + close_listen_socket(ListenSocket, Options1), + error(Error); + exit:Exit -> + close_listen_socket(ListenSocket, Options1), + exit(Exit) + end catch throw:bad_fd -> {error,bad_fd}; @@ -267,7 +319,12 @@ daemon(_, _, _) -> {error, badarg}. %%-------------------------------------------------------------------- --spec daemon_info(daemon_ref()) -> ok_error( [{atom(), term()}] ). +-spec daemon_info(Daemon) -> {ok, DaemonInfo} | {error,term()} when + Daemon :: daemon_ref(), + DaemonInfo :: [ {ip, inet:ip_address()} + | {port, inet:port_number()} + | {profile, term()} + ]. daemon_info(Pid) -> case catch ssh_system_sup:acceptor_supervisor(Pid) of @@ -290,16 +347,23 @@ daemon_info(Pid) -> end. %%-------------------------------------------------------------------- --spec stop_listener(daemon_ref()) -> ok. --spec stop_listener(inet:ip_address(), inet:port_number()) -> ok. -%% %% Description: Stops the listener, but leaves %% existing connections started by the listener up and running. %%-------------------------------------------------------------------- +-spec stop_listener(daemon_ref()) -> ok. + stop_listener(SysSup) -> ssh_system_sup:stop_listener(SysSup). + + +-spec stop_listener(inet:ip_address(), inet:port_number()) -> ok. + stop_listener(Address, Port) -> stop_listener(Address, Port, ?DEFAULT_PROFILE). + + +-spec stop_listener(any|inet:ip_address(), inet:port_number(), term()) -> ok. + stop_listener(any, Port, Profile) -> map_ip(fun(IP) -> ssh_system_sup:stop_listener(IP, Port, Profile) @@ -310,17 +374,23 @@ stop_listener(Address, Port, Profile) -> end, {address,Address}). %%-------------------------------------------------------------------- --spec stop_daemon(daemon_ref()) -> ok. --spec stop_daemon(inet:ip_address(), inet:port_number()) -> ok. --spec stop_daemon(inet:ip_address(), inet:port_number(), atom()) -> ok. -%% %% Description: Stops the listener and all connections started by %% the listener. %%-------------------------------------------------------------------- +-spec stop_daemon(DaemonRef::daemon_ref()) -> ok. + stop_daemon(SysSup) -> ssh_system_sup:stop_system(SysSup). + + +-spec stop_daemon(inet:ip_address(), inet:port_number()) -> ok. + stop_daemon(Address, Port) -> stop_daemon(Address, Port, ?DEFAULT_PROFILE). + + +-spec stop_daemon(any|inet:ip_address(), inet:port_number(), atom()) -> ok. + stop_daemon(any, Port, Profile) -> map_ip(fun(IP) -> ssh_system_sup:stop_system(IP, Port, Profile) @@ -331,33 +401,37 @@ stop_daemon(Address, Port, Profile) -> end, {address,Address}). %%-------------------------------------------------------------------- --spec shell(inet:socket() | string()) -> _. --spec shell(inet:socket() | string(), proplists:proplist()) -> _. --spec shell(string(), inet:port_number(), proplists:proplist()) -> _. - -%% Host = string() -%% Port = integer() -%% Options = [{Option, Value}] -%% %% Description: Starts an interactive shell to an SSH server on the %% given <Host>. The function waits for user input, %% and will not return until the remote shell is ended.(e.g. on %% exit from the shell) %%-------------------------------------------------------------------- +-spec shell(open_socket() | host()) -> _. + shell(Socket) when is_port(Socket) -> shell(Socket, []); shell(Host) -> shell(Host, ?SSH_DEFAULT_PORT, []). + +-spec shell(open_socket() | host(), client_options()) -> _. + shell(Socket, Options) when is_port(Socket) -> start_shell( connect(Socket, Options) ); shell(Host, Options) -> shell(Host, ?SSH_DEFAULT_PORT, Options). + +-spec shell(Host, Port, Options) -> _ when + Host :: host(), + Port :: inet:port_number(), + Options :: client_options() . + shell(Host, Port, Options) -> start_shell( connect(Host, Port, Options) ). + start_shell({ok, ConnectionRef}) -> case ssh_connection:session_channel(ConnectionRef, infinity) of {ok,ChannelId} -> @@ -365,11 +439,17 @@ start_shell({ok, ConnectionRef}) -> Args = [{channel_cb, ssh_shell}, {init_args,[ConnectionRef, ChannelId]}, {cm, ConnectionRef}, {channel_id, ChannelId}], - {ok, State} = ssh_channel:init([Args]), - ssh_channel:enter_loop(State); + {ok, State} = ssh_client_channel:init([Args]), + try + ssh_client_channel:enter_loop(State) + catch + exit:normal -> + ok + end; Error -> Error end; + start_shell(Error) -> Error. @@ -380,7 +460,7 @@ default_algorithms() -> ssh_transport:default_algorithms(). %%-------------------------------------------------------------------- --spec chk_algos_opts(list(any())) -> algs_list() . +-spec chk_algos_opts(client_options()|daemon_options()) -> internal_options() | {error,term()}. %%-------------------------------------------------------------------- chk_algos_opts(Opts) -> case lists:foldl( @@ -457,6 +537,15 @@ open_listen_socket(_Host0, Port0, Options0) -> {{LHost,LPort}, LSock}. %%%---------------------------------------------------------------- +close_listen_socket(ListenSocket, Options) -> + try + {_, Callback, _} = ?GET_OPT(transport, Options), + Callback:close(ListenSocket) + catch + _C:_E -> ok + end. + +%%%---------------------------------------------------------------- finalize_start(Host, Port, Profile, Options0, F) -> try %% throws error:Error if no usable hostkey is found diff --git a/lib/ssh/src/ssh.hrl b/lib/ssh/src/ssh.hrl index 4711f54fb5..923e9309f4 100644 --- a/lib/ssh/src/ssh.hrl +++ b/lib/ssh/src/ssh.hrl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2017. All Rights Reserved. +%% Copyright Ericsson AB 2004-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -29,7 +29,6 @@ -define(SSH_DEFAULT_PORT, 22). -define(SSH_MAX_PACKET_SIZE, (256*1024)). --define(REKEY_TIMOUT, 3600000). -define(REKEY_DATA_TIMOUT, 60000). -define(DEFAULT_PROFILE, default). @@ -98,35 +97,271 @@ %% Types --type role() :: client | server . --type ok_error(SuccessType) :: {ok, SuccessType} | {error, any()} . --type daemon_ref() :: pid() . +-type role() :: client | server . + +-type host() :: string() | inet:ip_address() | loopback . +-type open_socket() :: gen_tcp:socket(). + +-type subsystem_spec() :: {Name::string(), mod_args()} . + +-type algs_list() :: list( alg_entry() ). +-type alg_entry() :: {kex, [kex_alg()]} + | {public_key, [pubkey_alg()]} + | {cipher, double_algs(cipher_alg())} + | {mac, double_algs(mac_alg())} + | {compression, double_algs(compression_alg())} . + +-type kex_alg() :: 'diffie-hellman-group-exchange-sha1' | + 'diffie-hellman-group-exchange-sha256' | + 'diffie-hellman-group1-sha1' | + 'diffie-hellman-group14-sha1' | + 'diffie-hellman-group14-sha256' | + 'diffie-hellman-group16-sha512' | + 'diffie-hellman-group18-sha512' | + 'curve25519-sha256' | + '[email protected]' | + 'curve448-sha512' | + 'ecdh-sha2-nistp256' | + 'ecdh-sha2-nistp384' | + 'ecdh-sha2-nistp521' + . + +-type pubkey_alg() :: 'ecdsa-sha2-nistp256' | + 'ecdsa-sha2-nistp384' | + 'ecdsa-sha2-nistp521' | + 'ssh-ed25519' | + 'ssh-ed448' | + 'rsa-sha2-256' | + 'rsa-sha2-512' | + 'ssh-dss' | + 'ssh-rsa' + . + +-type cipher_alg() :: '3des-cbc' | + 'AEAD_AES_128_GCM' | + 'AEAD_AES_256_GCM' | + 'aes128-cbc' | + 'aes128-ctr' | + '[email protected]' | + 'aes192-ctr' | + 'aes256-ctr' | + '[email protected]' | + . + +-type mac_alg() :: 'AEAD_AES_128_GCM' | + 'AEAD_AES_256_GCM' | + 'hmac-sha1' | + 'hmac-sha2-256' | + 'hmac-sha2-512' + . + +-type compression_alg() :: 'none' | + 'zlib' | + . + +-type double_algs(AlgType) :: list( {client2server,[AlgType]} | {server2client,[AlgType]} ) + | [AlgType]. + +-type modify_algs_list() :: list( {append,algs_list()} | {prepend,algs_list()} | {rm,algs_list()} ) . + +-type internal_options() :: ssh_options:private_options(). +-type socket_options() :: [gen_tcp:connect_option() | gen_tcp:listen_option()]. + +-type client_options() :: [ client_option() ] . +-type daemon_options() :: [ daemon_option() ]. + + +-type common_options() :: [ common_option() ]. +-type common_option() :: + ssh_file:user_dir_common_option() + | profile_common_option() + | max_idle_time_common_option() + | key_cb_common_option() + | disconnectfun_common_option() + | unexpectedfun_common_option() + | ssh_msg_debug_fun_common_option() + | rekey_limit_common_option() + | id_string_common_option() + | pref_public_key_algs_common_option() + | preferred_algorithms_common_option() + | modify_algorithms_common_option() + | auth_methods_common_option() + | inet_common_option() + | fd_common_option() + . + +-define(COMMON_OPTION, common_option()). + +-type profile_common_option() :: {profile, atom() }. +-type max_idle_time_common_option() :: {idle_time, timeout()}. +-type rekey_limit_common_option() :: {rekey_limit, Bytes::limit_bytes() | + {Minutes::limit_time(), Bytes::limit_bytes()} + }. + +-type limit_bytes() :: non_neg_integer() | infinity . % non_neg_integer due to compatibility +-type limit_time() :: pos_integer() | infinity . + +-type key_cb_common_option() :: {key_cb, Module::atom() | {Module::atom(),Opts::[term()]} } . +-type disconnectfun_common_option() :: + {disconnectfun, fun((Reason::term()) -> void | any()) }. +-type unexpectedfun_common_option() :: + {unexpectedfun, fun((Message::term(),{Host::term(),Port::term()}) -> report | skip ) }. +-type ssh_msg_debug_fun_common_option() :: + {ssh_msg_debug_fun, fun((ssh:connection_ref(),AlwaysDisplay::boolean(),Msg::binary(),LanguageTag::binary()) -> any()) } . + +-type id_string_common_option() :: {id_string, string() | random | {random,Nmin::pos_integer(),Nmax::pos_integer()} }. +-type pref_public_key_algs_common_option() :: {pref_public_key_algs, [pubkey_alg()] } . +-type preferred_algorithms_common_option():: {preferred_algorithms, algs_list()}. +-type modify_algorithms_common_option() :: {modify_algorithms, modify_algs_list()}. +-type auth_methods_common_option() :: {auth_methods, string() }. + +-type inet_common_option() :: {inet, inet | inet6} . +-type fd_common_option() :: {fd, gen_tcp:socket()} . + + +-type opaque_common_options() :: + {transport, {atom(),atom(),atom()} } + | {vsn, {non_neg_integer(),non_neg_integer()} } + | {tstflg, list(term())} + | ssh_file:user_dir_fun_common_option() + | {max_random_length_padding, non_neg_integer()} . + + + +-type client_option() :: + ssh_file:pubkey_passphrase_client_options() + | host_accepting_client_options() + | authentication_client_options() + | diffie_hellman_group_exchange_client_option() + | connect_timeout_client_option() + | recv_ext_info_client_option() + | opaque_client_options() + | gen_tcp:connect_option() + | ?COMMON_OPTION . + +-type opaque_client_options() :: + {keyboard_interact_fun, fun((Name::iodata(), + Instruction::iodata(), + Prompts::[{Prompt::iodata(),Echo::boolean()}] + ) -> + [Response::iodata()] + )} + | opaque_common_options(). + +-type host_accepting_client_options() :: + {silently_accept_hosts, accept_hosts()} + | {user_interaction, boolean()} + | {save_accepted_host, boolean()} + | {quiet_mode, boolean()} . + +-type accept_hosts() :: boolean() + | accept_callback() + | {HashAlgoSpec::fp_digest_alg(), accept_callback()}. + +-type fp_digest_alg() :: 'md5' | crypto:sha1() | crypto:sha2() . + +-type accept_callback() :: fun((PeerName::string(), fingerprint() ) -> boolean()) . +-type fingerprint() :: string() | [string()]. + +-type authentication_client_options() :: + {user, string()} + | {password, string()} . + +-type diffie_hellman_group_exchange_client_option() :: + {dh_gex_limits, {Min::pos_integer(), I::pos_integer(), Max::pos_integer()} } . + +-type connect_timeout_client_option() :: {connect_timeout, timeout()} . + +-type recv_ext_info_client_option() :: {recv_ext_info, boolean()} . + + + +-type daemon_option() :: + subsystem_daemon_option() + | shell_daemon_option() + | exec_daemon_option() + | ssh_cli_daemon_option() + | authentication_daemon_options() + | diffie_hellman_group_exchange_daemon_option() + | negotiation_timeout_daemon_option() + | hardening_daemon_options() + | callbacks_daemon_options() + | send_ext_info_daemon_option() + | opaque_daemon_options() + | gen_tcp:listen_option() + | ?COMMON_OPTION . + +-type subsystem_daemon_option() :: {subsystems, subsystem_spec()}. + +-type shell_daemon_option() :: {shell, mod_fun_args() | 'shell_fun/1'() | 'shell_fun/2'() }. +-type 'shell_fun/1'() :: fun((User::string()) -> pid()) . +-type 'shell_fun/2'() :: fun((User::string(), PeerAddr::inet:ip_address()) -> pid()). + +-type exec_daemon_option() :: {exec, exec_spec()} . +-type exec_spec() :: {direct, exec_fun()} . +-type exec_fun() :: 'exec_fun/1'() | 'exec_fun/2'() | 'exec_fun/3'(). +-type 'exec_fun/1'() :: fun((Cmd::string()) -> exec_result()) . +-type 'exec_fun/2'() :: fun((Cmd::string(), User::string()) -> exec_result()) . +-type 'exec_fun/3'() :: fun((Cmd::string(), User::string(), ClientAddr::ip_port()) -> exec_result()) . +-type exec_result() :: {ok,Result::term()} | {error,Reason::term()} . + +-type ssh_cli_daemon_option() :: {ssh_cli, mod_args() | no_cli }. + +-type send_ext_info_daemon_option() :: {send_ext_info, boolean()} . --type subsystem_spec() :: {subsystem_name(), {channel_callback(), channel_init_args()}} . --type subsystem_name() :: string() . --type channel_callback() :: atom() . --type channel_init_args() :: list() . +-type authentication_daemon_options() :: + ssh_file:system_dir_daemon_option() + | {auth_method_kb_interactive_data, prompt_texts() } + | {user_passwords, [{UserName::string(),Pwd::string()}]} + | {password, string()} + | {pwdfun, pwdfun_2() | pwdfun_4()} . --type algs_list() :: list( alg_entry() ). --type alg_entry() :: {kex, simple_algs()} - | {public_key, simple_algs()} - | {cipher, double_algs()} - | {mac, double_algs()} - | {compression, double_algs()} . --type simple_algs() :: list( atom() ) . --type double_algs() :: list( {client2serverlist,simple_algs()} | {server2client,simple_algs()} ) - | simple_algs() . +-type prompt_texts() :: + kb_int_tuple() + | kb_int_fun_3() + . + +-type kb_int_fun_3() :: fun((Peer::ip_port(), User::string(), Service::string()) -> kb_int_tuple()). +-type kb_int_tuple() :: {Name::string(), Instruction::string(), Prompt::string(), Echo::boolean()}. --type options() :: #{socket_options := socket_options(), - internal_options := internal_options(), - option_key() => any() - }. +-type pwdfun_2() :: fun((User::string(), Password::string()) -> boolean()) . +-type pwdfun_4() :: fun((User::string(), + Password::string(), + PeerAddress::ip_port(), + State::any()) -> + boolean() | disconnect | {boolean(),NewState::any()} + ) . + +-type diffie_hellman_group_exchange_daemon_option() :: + {dh_gex_groups, [explicit_group()] | explicit_group_file() | ssh_moduli_file()} + | {dh_gex_limits, {Min::pos_integer(), Max::pos_integer()} } . --type socket_options() :: proplists:proplist(). --type internal_options() :: #{option_key() => any()}. +-type explicit_group() :: {Size::pos_integer(),G::pos_integer(),P::pos_integer()} . +-type explicit_group_file() :: {file,string()} . +-type ssh_moduli_file() :: {ssh_moduli_file,string()}. --type option_key() :: atom(). +-type negotiation_timeout_daemon_option() :: {negotiation_timeout, timeout()} . +-type hardening_daemon_options() :: + {max_sessions, pos_integer()} + | {max_channels, pos_integer()} + | {parallel_login, boolean()} + | {minimal_remote_max_packet_size, pos_integer()}. + +-type callbacks_daemon_options() :: + {failfun, fun((User::string(), PeerAddress::inet:ip_address(), Reason::term()) -> _)} + | {connectfun, fun((User::string(), PeerAddress::inet:ip_address(), Method::string()) ->_)} . + +-type opaque_daemon_options() :: + {infofun, fun()} + | opaque_common_options(). + +-type ip_port() :: {inet:ip_address(), inet:port_number()} . + +-type mod_args() :: {Module::atom(), Args::list()} . +-type mod_fun_args() :: {Module::atom(), Function::atom(), Args::list()} . %% Records @@ -134,8 +369,9 @@ { role :: client | role(), peer :: undefined | - {inet:hostname(), - {inet:ip_address(),inet:port_number()}}, %% string version of peer address + {inet:hostname(),ip_port()}, %% string version of peer address + + local, %% Local sockname. Need this AFTER a socket is closed by i.e. a crash c_vsn, %% client version {Major,Minor} s_vsn, %% server version {Major,Minor} @@ -151,11 +387,6 @@ algorithms, %% #alg{} - kex, %% key exchange algorithm - hkey, %% host key algorithm - key_cb, %% Private/Public key callback module - io_cb, %% Interaction callback module - send_mac = none, %% send MAC algorithm send_mac_key, %% key used in send MAC algorithm send_mac_size = 0, @@ -248,4 +479,38 @@ _ -> exit(Reason) end). + +%% dbg help macros +-define(wr_record(N,BlackList), + wr_record(R=#N{}) -> ssh_dbg:wr_record(R, record_info(fields,N), BlackList) + ). + +-define(wr_record(N), ?wr_record(N, [])). + + +%% Circular trace buffer macros + +-record(circ_buf_entry, + { + module, + line, + function, + pid = self(), + value + }). + +-define(CIRC_BUF_IN(VALUE), + ssh_dbg:cbuf_in( + #circ_buf_entry{module = ?MODULE, + line = ?LINE, + function = {?FUNCTION_NAME,?FUNCTION_ARITY}, + pid = self(), + value = (VALUE) + }) + ). + +-define(CIRC_BUF_IN_ONCE(VALUE), + ((fun(V) -> ?CIRC_BUF_IN(V), V end)(VALUE)) + ). + -endif. % SSH_HRL defined diff --git a/lib/ssh/src/ssh_acceptor.erl b/lib/ssh/src/ssh_acceptor.erl index d66a34c58a..11ce80354e 100644 --- a/lib/ssh/src/ssh_acceptor.erl +++ b/lib/ssh/src/ssh_acceptor.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -33,6 +33,8 @@ %% spawn export -export([acceptor_init/5, acceptor_loop/6]). +-export([dbg_trace/3]). + -define(SLEEP_TIME, 200). %%==================================================================== @@ -86,7 +88,8 @@ acceptor_init(Parent, Port, Address, Opts, AcceptTimeout) -> acceptor_loop(Callback, Port, Address, Opts, LSock, AcceptTimeout); {error,_} -> % Not open, a restart - {ok,NewLSock} = listen(Port, Opts), + %% Allow gen_tcp:listen to fail 4 times if eaddrinuse: + {ok,NewLSock} = try_listen(Port, Opts, 4), proc_lib:init_ack(Parent, {ok, self()}), Opts1 = ?DELETE_INTERNAL_OPT(lsocket, Opts), {_, Callback, _} = ?GET_OPT(transport, Opts1), @@ -98,6 +101,19 @@ acceptor_init(Parent, Port, Address, Opts, AcceptTimeout) -> end. +try_listen(Port, Opts, NtriesLeft) -> + try_listen(Port, Opts, 1, NtriesLeft). + +try_listen(Port, Opts, N, Nmax) -> + case listen(Port, Opts) of + {error,eaddrinuse} when N<Nmax -> + timer:sleep(10*N), % Sleep 10, 20, 30,... ms + try_listen(Port, Opts, N+1, Nmax); + Other -> + Other + end. + + request_ownership(LSock, SockOwner) -> SockOwner ! {request_control,LSock,self()}, receive @@ -181,3 +197,33 @@ handle_error(Reason) -> error_logger:error_report(String), exit({accept_failed, String}). +%%%################################################################ +%%%# +%%%# Tracing +%%%# + +dbg_trace(points, _, _) -> [connections]; + +dbg_trace(flags, connections, _) -> [c]; +dbg_trace(on, connections, _) -> dbg:tp(?MODULE, acceptor_init, 5, x), + dbg:tpl(?MODULE, handle_connection, 5, x); +dbg_trace(off, connections, _) -> dbg:ctp(?MODULE, acceptor_init, 5), + dbg:ctp(?MODULE, handle_connection, 5); +dbg_trace(format, connections, {call, {?MODULE,acceptor_init, + [_Parent, Port, Address, _Opts, _AcceptTimeout]}}) -> + [io_lib:format("Starting LISTENER on ~s:~p\n", [ntoa(Address),Port]) + ]; +dbg_trace(format, connections, {return_from, {?MODULE,handle_connection,5}, {error,Error}}) -> + ["Starting connection to server failed:\n", + io_lib:format("Error = ~p", [Error]) + ]. + + + +ntoa(A) -> + try inet:ntoa(A) + catch + _:_ when is_list(A) -> A; + _:_ -> io_lib:format('~p',[A]) + end. + diff --git a/lib/ssh/src/ssh_acceptor_sup.erl b/lib/ssh/src/ssh_acceptor_sup.erl index fc564a359b..15a2238dd3 100644 --- a/lib/ssh/src/ssh_acceptor_sup.erl +++ b/lib/ssh/src/ssh_acceptor_sup.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -36,8 +36,6 @@ -define(DEFAULT_TIMEOUT, 50000). --spec init( [term()] ) -> {ok,{supervisor:sup_flags(),[supervisor:child_spec()]}} | ignore . - %%%========================================================================= %%% API %%%========================================================================= diff --git a/lib/ssh/src/ssh_auth.erl b/lib/ssh/src/ssh_auth.erl index 03d264745b..9632168e65 100644 --- a/lib/ssh/src/ssh_auth.erl +++ b/lib/ssh/src/ssh_auth.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -40,15 +40,12 @@ %%-------------------------------------------------------------------- %%%---------------------------------------------------------------- userauth_request_msg(#ssh{userauth_methods = ServerMethods, - userauth_supported_methods = UserPrefMethods, % Note: this is not documented as supported for clients + userauth_supported_methods = UserPrefMethods, userauth_preference = ClientMethods0 } = Ssh0) -> case sort_select_mthds(ClientMethods0, UserPrefMethods, ServerMethods) of [] -> - Msg = #ssh_msg_disconnect{code = ?SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE, - description = "Unable to connect using the available authentication methods", - language = "en"}, - {disconnect, Msg, ssh_transport:ssh_packet(Msg, Ssh0)}; + {send_disconnect, ?SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE, Ssh0}; [{Pref,Module,Function,Args} | Prefs] -> Ssh = case Pref of @@ -94,8 +91,10 @@ unique(L) -> %%%---- userauth_request_msg "callbacks" -password_msg([#ssh{opts = Opts, io_cb = IoCb, - user = User, service = Service} = Ssh0]) -> +password_msg([#ssh{opts = Opts, + user = User, + service = Service} = Ssh0]) -> + IoCb = ?GET_INTERNAL_OPT(io_cb, Opts), {Password,Ssh} = case ?GET_OPT(password, Opts) of undefined when IoCb == ssh_no_io -> @@ -140,9 +139,7 @@ keyboard_interactive_msg([#ssh{user = User, get_public_key(SigAlg, #ssh{opts = Opts}) -> KeyAlg = key_alg(SigAlg), - {KeyCb,KeyCbOpts} = ?GET_OPT(key_cb, Opts), - UserOpts = ?GET_OPT(user_options, Opts), - case KeyCb:user_key(KeyAlg, [{key_cb_private,KeyCbOpts}|UserOpts]) of + case ssh_transport:call_KeyCb(user_key, [KeyAlg], Opts) of {ok, PrivKey} -> try %% Check the key - the KeyCb may be a buggy plugin @@ -196,11 +193,8 @@ init_userauth_request_msg(#ssh{opts = Opts} = Ssh) -> %% Client side case ?GET_OPT(user, Opts) of undefined -> - ErrStr = "Could not determine the users name", - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_ILLEGAL_USER_NAME, - description = ErrStr}); - + ?DISCONNECT(?SSH_DISCONNECT_ILLEGAL_USER_NAME, + "Could not determine the users name"); User -> ssh_transport:ssh_packet( #ssh_msg_userauth_request{user = User, @@ -393,11 +387,9 @@ handle_userauth_info_request(#ssh_msg_userauth_info_request{name = Name, instruction = Instr, num_prompts = NumPrompts, data = Data}, - #ssh{opts = Opts, - io_cb = IoCb - } = Ssh) -> + #ssh{opts=Opts} = Ssh) -> PromptInfos = decode_keyboard_interactive_prompts(NumPrompts,Data), - case keyboard_interact_get_responses(IoCb, Opts, Name, Instr, PromptInfos) of + case keyboard_interact_get_responses(Opts, Name, Instr, PromptInfos) of not_ok -> not_ok; Responses -> @@ -451,11 +443,8 @@ handle_userauth_info_response({extra,#ssh_msg_userauth_info_response{}}, handle_userauth_info_response(#ssh_msg_userauth_info_response{}, _Auth) -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, - description = "Server does not support keyboard-interactive" - }). - + ?DISCONNECT(?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, + "Server does not support keyboard-interactive"). %%-------------------------------------------------------------------- %%% Internal functions @@ -492,10 +481,8 @@ check_password(User, Password, Opts, Ssh) -> {false,NewState} -> {false, Ssh#ssh{pwdfun_user_state=NewState}}; disconnect -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, - description = "Unable to connect using the available authentication methods" - }) + ?DISCONNECT(?SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE, + "") end end. @@ -509,9 +496,7 @@ get_password_option(Opts, User) -> pre_verify_sig(User, KeyBlob, Opts) -> try Key = public_key:ssh_decode(KeyBlob, ssh2_pubkey), % or exception - {KeyCb,KeyCbOpts} = ?GET_OPT(key_cb, Opts), - UserOpts = ?GET_OPT(user_options, Opts), - KeyCb:is_auth_key(Key, User, [{key_cb_private,KeyCbOpts}|UserOpts]) + ssh_transport:call_KeyCb(is_auth_key, [Key, User], Opts) catch _:_ -> false @@ -520,10 +505,8 @@ pre_verify_sig(User, KeyBlob, Opts) -> verify_sig(SessionId, User, Service, AlgBin, KeyBlob, SigWLen, #ssh{opts = Opts} = Ssh) -> try Alg = binary_to_list(AlgBin), - {KeyCb,KeyCbOpts} = ?GET_OPT(key_cb, Opts), - UserOpts = ?GET_OPT(user_options, Opts), Key = public_key:ssh_decode(KeyBlob, ssh2_pubkey), % or exception - true = KeyCb:is_auth_key(Key, User, [{key_cb_private,KeyCbOpts}|UserOpts]), + true = ssh_transport:call_KeyCb(is_auth_key, [Key, User], Opts), PlainText = build_sig_data(SessionId, User, Service, KeyBlob, Alg), <<?UINT32(AlgSigLen), AlgSig:AlgSigLen/binary>> = SigWLen, <<?UINT32(AlgLen), _Alg:AlgLen/binary, @@ -547,60 +530,78 @@ build_sig_data(SessionId, User, Service, KeyBlob, Alg) -> +key_alg('rsa-sha2-256') -> 'ssh-rsa'; +key_alg('rsa-sha2-512') -> 'ssh-rsa'; +key_alg(Alg) -> Alg. + +%%%================================================================ +%%% +%%% Keyboard-interactive +%%% + decode_keyboard_interactive_prompts(_NumPrompts, Data) -> ssh_message:decode_keyboard_interactive_prompts(Data, []). -keyboard_interact_get_responses(IoCb, Opts, Name, Instr, PromptInfos) -> - NumPrompts = length(PromptInfos), +keyboard_interact_get_responses(Opts, Name, Instr, PromptInfos) -> keyboard_interact_get_responses(?GET_OPT(user_interaction, Opts), ?GET_OPT(keyboard_interact_fun, Opts), - ?GET_OPT(password, Opts), IoCb, Name, - Instr, PromptInfos, Opts, NumPrompts). + ?GET_OPT(password, Opts), + Name, + Instr, + PromptInfos, + Opts). -keyboard_interact_get_responses(_, _, not_ok, _, _, _, _, _, _) -> +%% Don't re-try an already rejected password. This could happen if both keyboard-interactive +%% and password methods are tried: +keyboard_interact_get_responses(_, _, not_ok, _, _, _, _) -> not_ok; -keyboard_interact_get_responses(_, undefined, Password, _, _, _, _, _, - 1) when Password =/= undefined -> - [Password]; %% Password auth implemented with keyboard-interaction and passwd is known -keyboard_interact_get_responses(_, _, _, _, _, _, _, _, 0) -> + +%% Only one password requestedm and we have got one via the 'password' option for the daemon: +keyboard_interact_get_responses(_, undefined, Pwd, _, _, [_], _) when Pwd =/= undefined -> + [Pwd]; %% Password auth implemented with keyboard-interaction and passwd is known + +%% No password requested (keyboard-interactive): +keyboard_interact_get_responses(_, _, _, _, _, [], _) -> []; -keyboard_interact_get_responses(false, undefined, undefined, _, _, _, [Prompt|_], Opts, _) -> - ssh_no_io:read_line(Prompt, Opts); %% Throws error as keyboard interaction is not allowed -keyboard_interact_get_responses(true, undefined, _,IoCb, Name, Instr, PromptInfos, Opts, _) -> - keyboard_interact(IoCb, Name, Instr, PromptInfos, Opts); -keyboard_interact_get_responses(true, Fun, _Pwd, _IoCb, Name, Instr, PromptInfos, _Opts, NumPrompts) -> - keyboard_interact_fun(Fun, Name, Instr, PromptInfos, NumPrompts). - -keyboard_interact(IoCb, Name, Instr, Prompts, Opts) -> + +%% user_interaction is forbidden (by option user_interaction) and we have to ask +%% the user for one or more. +%% Throw an error: +keyboard_interact_get_responses(false, undefined, undefined, _, _, [Prompt|_], Opts) -> + ssh_no_io:read_line(Prompt, Opts); + +%% One or more passwords are requested, we may prompt the user and no fun is used +%% to get the responses: +keyboard_interact_get_responses(true, undefined, _, Name, Instr, PromptInfos, Opts) -> + prompt_user_for_passwords(Name, Instr, PromptInfos, Opts); + +%% The passwords are provided with a fun. Use that one! +keyboard_interact_get_responses(true, Fun, _Pwd, Name, Instr, PromptInfos, _Opts) -> + keyboard_interact_fun(Fun, Name, Instr, PromptInfos). + + + +prompt_user_for_passwords(Name, Instr, PromptInfos, Opts) -> + IoCb = ?GET_INTERNAL_OPT(io_cb, Opts), write_if_nonempty(IoCb, Name), write_if_nonempty(IoCb, Instr), lists:map(fun({Prompt, true}) -> IoCb:read_line(Prompt, Opts); ({Prompt, false}) -> IoCb:read_password(Prompt, Opts) end, - Prompts). + PromptInfos). + +keyboard_interact_fun(KbdInteractFun, Name, Instr, PromptInfos) -> + case KbdInteractFun(Name, Instr, PromptInfos) of + Responses when is_list(Responses), + length(Responses) == length(PromptInfos) -> + Responses; + _ -> + nok + end. + write_if_nonempty(_, "") -> ok; write_if_nonempty(_, <<>>) -> ok; write_if_nonempty(IoCb, Text) -> IoCb:format("~s~n",[Text]). - -keyboard_interact_fun(KbdInteractFun, Name, Instr, PromptInfos, NumPrompts) -> - Prompts = lists:map(fun({Prompt, _Echo}) -> Prompt end, - PromptInfos), - case KbdInteractFun(Name, Instr, Prompts) of - Rs when length(Rs) == NumPrompts -> - Rs; - Rs -> - throw({mismatching_number_of_responses, - {got,Rs}, - {expected, NumPrompts}, - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, - description = "User interaction failed", - language = "en"}}) - end. - - -key_alg('rsa-sha2-256') -> 'ssh-rsa'; -key_alg('rsa-sha2-512') -> 'ssh-rsa'; -key_alg(Alg) -> Alg. diff --git a/lib/ssh/src/ssh_channel.erl b/lib/ssh/src/ssh_channel.erl index 85b31f3669..1d977e3bc9 100644 --- a/lib/ssh/src/ssh_channel.erl +++ b/lib/ssh/src/ssh_channel.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2016. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -22,6 +22,7 @@ -module(ssh_channel). +-include("ssh.hrl"). -include("ssh_connect.hrl"). -callback init(Args :: term()) -> @@ -49,331 +50,47 @@ {ok, NewState :: term()} | {error, Reason :: term()}. -callback handle_msg(Msg ::term(), State :: term()) -> - {ok, State::term()} | {stop, ChannelId::integer(), State::term()}. + {ok, State::term()} | {stop, ChannelId::ssh:channel_id(), State::term()}. --callback handle_ssh_msg({ssh_cm, ConnectionRef::term(), SshMsg::term()}, +-callback handle_ssh_msg({ssh_cm, ConnectionRef::ssh:connection_ref(), SshMsg::term()}, State::term()) -> {ok, State::term()} | - {stop, ChannelId::integer(), + {stop, ChannelId::ssh:channel_id(), State::term()}. --behaviour(gen_server). - %%% API -export([start/4, start/5, start_link/4, start_link/5, call/2, call/3, + init/1, cast/2, reply/2, enter_loop/1]). -%% gen_server callbacks --export([init/1, handle_call/3, handle_cast/2, handle_info/2, - terminate/2, code_change/3]). - -%% Internal application API --export([cache_create/0, cache_lookup/2, cache_update/2, - cache_delete/1, cache_delete/2, cache_foldl/3, - cache_info/2, cache_find/2, - get_print_info/1]). - --record(state, { - cm, - channel_cb, - channel_state, - channel_id, - close_sent = false - }). - %%==================================================================== %% API %%==================================================================== call(ChannelPid, Msg) -> - call(ChannelPid, Msg, infinity). + ssh_client_channel:call(ChannelPid, Msg). call(ChannelPid, Msg, TimeOute) -> - try gen_server:call(ChannelPid, Msg, TimeOute) of - Result -> - Result - catch - exit:{noproc, _} -> - {error, closed}; - exit:{normal, _} -> - {error, closed}; - exit:{shutdown, _} -> - {error, closed}; - exit:{{shutdown, _}, _} -> - {error, closed}; - exit:{timeout, _} -> - {error, timeout} - end. + ssh_client_channel:call(ChannelPid, Msg, TimeOute). cast(ChannelPid, Msg) -> - gen_server:cast(ChannelPid, Msg). - + ssh_client_channel:cast(ChannelPid, Msg). reply(From, Msg) -> - gen_server:reply(From, Msg). + ssh_client_channel:reply(From, Msg). -%%==================================================================== -%% Internal application API -%%==================================================================== +init(Args) -> + ssh_client_channel:init(Args). -%%-------------------------------------------------------------------- -%% Function: start_link() -> {ok,Pid} | ignore | {error,Error} -%% Description: Starts the server -%%-------------------------------------------------------------------- start(ConnectionManager, ChannelId, CallBack, CbInitArgs) -> - start(ConnectionManager, ChannelId, CallBack, CbInitArgs, undefined). + ssh_client_channel:start(ConnectionManager, ChannelId, CallBack, CbInitArgs). start(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec) -> - Options = [{channel_cb, CallBack}, - {channel_id, ChannelId}, - {init_args, CbInitArgs}, - {cm, ConnectionManager}, - {exec, Exec}], - gen_server:start(?MODULE, [Options], []). + ssh_client_channel:start(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec). start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs) -> - start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, undefined). + ssh_client_channel:start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs). start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec) -> - Options = [{channel_cb, CallBack}, - {channel_id, ChannelId}, - {init_args, CbInitArgs}, - {cm, ConnectionManager}, - {exec, Exec}], - gen_server:start_link(?MODULE, [Options], []). + ssh_client_channel:start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec). enter_loop(State) -> - gen_server:enter_loop(?MODULE, [], State). - -%%==================================================================== -%% gen_server callbacks -%%==================================================================== - -%%-------------------------------------------------------------------- -%% Function: init(Args) -> {ok, State} | -%% {ok, State, Timeout} | -%% ignore | -%% {stop, Reason} -%% Description: Initiates the server -%%-------------------------------------------------------------------- -init([Options]) -> - Cb = proplists:get_value(channel_cb, Options), - ConnectionManager = proplists:get_value(cm, Options), - ChannelId = proplists:get_value(channel_id, Options), - process_flag(trap_exit, true), - InitArgs = - case proplists:get_value(exec, Options) of - undefined -> - proplists:get_value(init_args, Options); - Exec -> - proplists:get_value(init_args, Options) ++ [Exec] - end, - try Cb:init(InitArgs) of - {ok, ChannelState} -> - State = #state{cm = ConnectionManager, - channel_cb = Cb, - channel_id = ChannelId, - channel_state = ChannelState}, - self() ! {ssh_channel_up, ChannelId, ConnectionManager}, - {ok, State}; - {ok, ChannelState, Timeout} -> - State = #state{cm = ConnectionManager, - channel_cb = Cb, - channel_id = ChannelId, - channel_state = ChannelState}, - self() ! {ssh_channel_up, ChannelId, ConnectionManager}, - {ok, State, Timeout}; - {stop, Why} -> - {stop, Why} - catch - _:Reason -> - {stop, Reason} - end. - -%%-------------------------------------------------------------------- -%% Function: %% handle_call(Request, From, State) -> {reply, Reply, State} | -%% {reply, Reply, State, Timeout} | -%% {noreply, State} | -%% {noreply, State, Timeout} | -%% {stop, Reason, Reply, State} | -%% {stop, Reason, State} -%% Description: Handling call messages -%%-------------------------------------------------------------------- -handle_call(get_print_info, _From, State) -> - Reply = - {{State#state.cm, - State#state.channel_id}, - io_lib:format('CB=~p',[State#state.channel_cb]) - }, - {reply, Reply, State}; - -handle_call(Request, From, #state{channel_cb = Module, - channel_state = ChannelState} = State) -> - try Module:handle_call(Request, From, ChannelState) of - Result -> - handle_cb_result(Result, State) - catch - error:{undef, _} -> - {noreply, State} - end. - - -%%-------------------------------------------------------------------- -%% Function: handle_cast(Msg, State) -> {noreply, State} | -%% {noreply, State, Timeout} | -%% {stop, Reason, State} -%% Description: Handling cast messages -%%-------------------------------------------------------------------- -handle_cast(Msg, #state{channel_cb = Module, - channel_state = ChannelState} = State) -> - - try Module:handle_cast(Msg, ChannelState) of - Result -> - handle_cb_result(Result, State) - catch - error:{undef, _} -> - {noreply, State} - end. - -%%-------------------------------------------------------------------- -%% Function: handle_info(Info, State) -> {noreply, State} | -%% {noreply, State, Timeout} | -%% {stop, Reason, State} -%% Description: Handling all non call/cast messages -%%-------------------------------------------------------------------- -handle_info({ssh_cm, ConnectionManager, {closed, _ChannelId}}, - #state{cm = ConnectionManager, - close_sent = true} = State) -> - {stop, normal, State}; -handle_info({ssh_cm, ConnectionManager, {closed, ChannelId}}, - #state{cm = ConnectionManager, - close_sent = false} = State) -> - %% To be on the safe side, i.e. the manager has already been terminated. - (catch ssh_connection:close(ConnectionManager, ChannelId)), - {stop, normal, State#state{close_sent = true}}; - -handle_info({ssh_cm, _, _} = Msg, #state{cm = ConnectionManager, - channel_cb = Module, - channel_state = ChannelState0} = State) -> - case Module:handle_ssh_msg(Msg, ChannelState0) of - {ok, ChannelState} -> - adjust_window(Msg), - {noreply, State#state{channel_state = ChannelState}}; - {ok, ChannelState, Timeout} -> - adjust_window(Msg), - {noreply, State#state{channel_state = ChannelState}, Timeout}; - {stop, ChannelId, ChannelState} -> - catch ssh_connection:close(ConnectionManager, ChannelId), - {stop, normal, State#state{close_sent = true, - channel_state = ChannelState}} - end; - -handle_info(Msg, #state{cm = ConnectionManager, channel_cb = Module, - channel_state = ChannelState0} = State) -> - case Module:handle_msg(Msg, ChannelState0) of - {ok, ChannelState} -> - {noreply, State#state{channel_state = ChannelState}}; - {ok, ChannelState, Timeout} -> - {noreply, State#state{channel_state = ChannelState}, Timeout}; - {stop, Reason, ChannelState} when is_atom(Reason)-> - {stop, Reason, State#state{close_sent = true, - channel_state = ChannelState}}; - {stop, ChannelId, ChannelState} -> - Reason = - case Msg of - {'EXIT', _Pid, shutdown} -> - shutdown; - _ -> - normal - end, - (catch ssh_connection:close(ConnectionManager, ChannelId)), - {stop, Reason, State#state{close_sent = true, - channel_state = ChannelState}} - end. - -%%-------------------------------------------------------------------- -%% Function: terminate(Reason, State) -> void() -%% Description: This function is called by a gen_server when it is about to -%% terminate. It should be the opposite of Module:init/1 and do any necessary -%% cleaning up. When it returns, the gen_server terminates with Reason. -%% The return value is ignored. -%%-------------------------------------------------------------------- -terminate(Reason, #state{cm = ConnectionManager, - channel_id = ChannelId, - close_sent = false} = State) -> - catch ssh_connection:close(ConnectionManager, ChannelId), - terminate(Reason, State#state{close_sent = true}); -terminate(_, #state{channel_cb = Cb, channel_state = ChannelState}) -> - catch Cb:terminate(Cb, ChannelState), - ok. - -%%-------------------------------------------------------------------- -%% Func: code_change(OldVsn, State, Extra) -> {ok, NewState} -%% Description: Convert process state when code is changed -%%-------------------------------------------------------------------- -code_change(OldVsn, #state{channel_cb = Module, - channel_state = ChannelState0} = State, Extra) -> - {ok, ChannelState} = Module:code_change(OldVsn, ChannelState0, Extra), - {ok, State#state{channel_state = ChannelState}}. - -%%==================================================================== -%% Internal application API -%%==================================================================== -cache_create() -> - ets:new(cm_tab, [set,{keypos, #channel.local_id}]). - -cache_lookup(Cache, Key) -> - case ets:lookup(Cache, Key) of - [Channel] -> - Channel; - [] -> - undefined - end. - -cache_update(Cache, #channel{local_id = Id} = Entry) when Id =/= undefined -> - ets:insert(Cache, Entry). - -cache_delete(Cache, Key) -> - ets:delete(Cache, Key). - -cache_delete(Cache) -> - ets:delete(Cache). - -cache_foldl(Fun, Acc, Cache) -> - ets:foldl(Fun, Acc, Cache). - -cache_info(num_entries, Cache) -> - proplists:get_value(size, ets:info(Cache)). - -cache_find(ChannelPid, Cache) -> - case ets:match_object(Cache, #channel{user = ChannelPid}) of - [] -> - undefined; - [Channel] -> - Channel - end. - -get_print_info(Pid) -> - call(Pid, get_print_info, 1000). - -%%-------------------------------------------------------------------- -%%% Internal functions -%%-------------------------------------------------------------------- -handle_cb_result({reply, Reply, ChannelState}, State) -> - {reply, Reply, State#state{channel_state = ChannelState}}; -handle_cb_result({reply, Reply, ChannelState, Timeout}, State) -> - {reply, Reply,State#state{channel_state = ChannelState}, Timeout}; -handle_cb_result({noreply, ChannelState}, State) -> - {noreply, State#state{channel_state = ChannelState}}; -handle_cb_result({noreply, ChannelState, Timeout}, State) -> - {noreply, State#state{channel_state = ChannelState}, Timeout}; -handle_cb_result({stop, Reason, Reply, ChannelState}, State) -> - {stop, Reason, Reply, State#state{channel_state = ChannelState}}; -handle_cb_result({stop, Reason, ChannelState}, State) -> - {stop, Reason, State#state{channel_state = ChannelState}}. - -adjust_window({ssh_cm, ConnectionManager, - {data, ChannelId, _, Data}}) -> - ssh_connection:adjust_window(ConnectionManager, ChannelId, size(Data)); -adjust_window(_) -> - ok. - - + ssh_client_channel:enter_loop(State). diff --git a/lib/ssh/src/ssh_cli.erl b/lib/ssh/src/ssh_cli.erl index 958c342f5f..af51356355 100644 --- a/lib/ssh/src/ssh_cli.erl +++ b/lib/ssh/src/ssh_cli.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2005-2017. All Rights Reserved. +%% Copyright Ericsson AB 2005-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -25,14 +25,16 @@ -module(ssh_cli). --behaviour(ssh_daemon_channel). +-behaviour(ssh_server_channel). -include("ssh.hrl"). -include("ssh_connect.hrl"). -%% ssh_channel callbacks +%% ssh_server_channel callbacks -export([init/1, handle_ssh_msg/2, handle_msg/2, terminate/2]). +-export([dbg_trace/3]). + %% state -record(state, { cm, @@ -45,23 +47,8 @@ }). %%==================================================================== -%% ssh_channel callbacks +%% ssh_server_channel callbacks %%==================================================================== --spec init(Args :: term()) -> - {ok, State :: term()} | {ok, State :: term(), timeout() | hibernate} | - {stop, Reason :: term()} | ignore. - --spec terminate(Reason :: (normal | shutdown | {shutdown, term()} | - term()), - State :: term()) -> - term(). - --spec handle_msg(Msg ::term(), State :: term()) -> - {ok, State::term()} | {stop, ChannelId::integer(), State::term()}. --spec handle_ssh_msg({ssh_cm, ConnectionRef::term(), SshMsg::term()}, - State::term()) -> {ok, State::term()} | - {stop, ChannelId::integer(), - State::term()}. %%-------------------------------------------------------------------- %% Function: init(Args) -> {ok, State} @@ -118,42 +105,53 @@ handle_ssh_msg({ssh_cm, ConnectionHandler, write_chars(ConnectionHandler, ChannelId, Chars), {ok, State#state{pty = Pty, buf = NewBuf}}; -handle_ssh_msg({ssh_cm, ConnectionHandler, - {shell, ChannelId, WantReply}}, State) -> +handle_ssh_msg({ssh_cm, ConnectionHandler, {shell, ChannelId, WantReply}}, State) -> NewState = start_shell(ConnectionHandler, State), - ssh_connection:reply_request(ConnectionHandler, WantReply, - success, ChannelId), - {ok, NewState#state{channel = ChannelId, - cm = ConnectionHandler}}; - -handle_ssh_msg({ssh_cm, ConnectionHandler, - {exec, ChannelId, WantReply, Cmd}}, #state{exec=undefined, - shell=?DEFAULT_SHELL} = State) -> - {Reply, Status} = exec(Cmd), - write_chars(ConnectionHandler, - ChannelId, io_lib:format("~p\n", [Reply])), - ssh_connection:reply_request(ConnectionHandler, WantReply, - success, ChannelId), - ssh_connection:exit_status(ConnectionHandler, ChannelId, Status), - ssh_connection:send_eof(ConnectionHandler, ChannelId), - {stop, ChannelId, State#state{channel = ChannelId, cm = ConnectionHandler}}; - -handle_ssh_msg({ssh_cm, ConnectionHandler, - {exec, ChannelId, WantReply, _Cmd}}, #state{exec = undefined} = State) -> - write_chars(ConnectionHandler, ChannelId, 1, "Prohibited.\n"), ssh_connection:reply_request(ConnectionHandler, WantReply, success, ChannelId), - ssh_connection:exit_status(ConnectionHandler, ChannelId, 255), - ssh_connection:send_eof(ConnectionHandler, ChannelId), - {stop, ChannelId, State#state{channel = ChannelId, cm = ConnectionHandler}}; - -handle_ssh_msg({ssh_cm, ConnectionHandler, - {exec, ChannelId, WantReply, Cmd}}, State) -> - NewState = start_shell(ConnectionHandler, Cmd, State), - ssh_connection:reply_request(ConnectionHandler, WantReply, - success, ChannelId), {ok, NewState#state{channel = ChannelId, cm = ConnectionHandler}}; +handle_ssh_msg({ssh_cm, ConnectionHandler, {exec, ChannelId, WantReply, Cmd}}, S0) -> + case + case S0#state.exec of + {direct,F} -> + %% Exec called and a Fun or MFA is defined to use. The F returns the + %% value to return. + exec_direct(ConnectionHandler, F, Cmd); + + undefined when S0#state.shell == ?DEFAULT_SHELL -> + %% Exec called and the shell is the default shell (= Erlang shell). + %% To be exact, eval the term as an Erlang term (but not using the + %% ?DEFAULT_SHELL directly). This disables banner, prompts and such. + exec_in_erlang_default_shell(Cmd); + + undefined -> + %% Exec called, but the a shell other than the default shell is defined. + %% No new exec shell is defined, so don't execute! + %% We don't know if it is intended to use the new shell or not. + {"Prohibited.", 255, 1}; + + _ -> + %% Exec called and a Fun or MFA is defined to use. The F communicates via + %% standard io:write/read. + %% Kept for compatibility. + S1 = start_exec_shell(ConnectionHandler, Cmd, S0), + ssh_connection:reply_request(ConnectionHandler, WantReply, success, ChannelId), + {ok, S1} + end + of + {Reply, Status, Type} -> + write_chars(ConnectionHandler, ChannelId, Type, Reply), + ssh_connection:reply_request(ConnectionHandler, WantReply, success, ChannelId), + ssh_connection:exit_status(ConnectionHandler, ChannelId, Status), + ssh_connection:send_eof(ConnectionHandler, ChannelId), + {stop, ChannelId, S0#state{channel = ChannelId, cm = ConnectionHandler}}; + + {ok, S} -> + {ok, S#state{channel = ChannelId, + cm = ConnectionHandler}} + end; + handle_ssh_msg({ssh_cm, _ConnectionHandler, {eof, _ChannelId}}, State) -> {ok, State}; @@ -259,35 +257,7 @@ to_group(Data, Group) -> end, to_group(Tail, Group). -exec(Cmd) -> - case eval(parse(scan(Cmd))) of - {error, _} -> - {Cmd, 0}; %% This should be an external call - Term -> - Term - end. - -scan(Cmd) -> - erl_scan:string(Cmd). - -parse({ok, Tokens, _}) -> - erl_parse:parse_exprs(Tokens); -parse(Error) -> - Error. - -eval({ok, Expr_list}) -> - case (catch erl_eval:exprs(Expr_list, - erl_eval:new_bindings())) of - {value, Value, _NewBindings} -> - {Value, 0}; - {'EXIT', {Error, _}} -> - {Error, -1}; - Error -> - {Error, -1} - end; -eval(Error) -> - {Error, -1}. - +%%-------------------------------------------------------------------- %%% io_request, handle io requests from the user process, %%% Note, this is not the real I/O-protocol, but the mockup version %%% used between edlin and a user_driver. The protocol tags are @@ -506,53 +476,130 @@ bin_to_list(L) when is_list(L) -> bin_to_list(I) when is_integer(I) -> I. + +%%-------------------------------------------------------------------- start_shell(ConnectionHandler, State) -> - Shell = State#state.shell, - ConnectionInfo = ssh_connection_handler:connection_info(ConnectionHandler, - [peer, user]), - ShellFun = case is_function(Shell) of - true -> - User = proplists:get_value(user, ConnectionInfo), - case erlang:fun_info(Shell, arity) of - {arity, 1} -> - fun() -> Shell(User) end; - {arity, 2} -> - {_, PeerAddr} = proplists:get_value(peer, ConnectionInfo), - fun() -> Shell(User, PeerAddr) end; - _ -> - Shell - end; - _ -> - Shell - end, - Echo = get_echo(State#state.pty), - Group = group:start(self(), ShellFun, [{echo, Echo}]), - State#state{group = Group, buf = empty_buf()}. - -start_shell(_ConnectionHandler, Cmd, #state{exec={M, F, A}} = State) -> - Group = group:start(self(), {M, F, A++[Cmd]}, [{echo, false}]), - State#state{group = Group, buf = empty_buf()}; -start_shell(ConnectionHandler, Cmd, #state{exec=Shell} = State) when is_function(Shell) -> - - ConnectionInfo = ssh_connection_handler:connection_info(ConnectionHandler, - [peer, user]), - User = proplists:get_value(user, ConnectionInfo), - ShellFun = - case erlang:fun_info(Shell, arity) of - {arity, 1} -> - fun() -> Shell(Cmd) end; - {arity, 2} -> - fun() -> Shell(Cmd, User) end; - {arity, 3} -> - {_, PeerAddr} = proplists:get_value(peer, ConnectionInfo), - fun() -> Shell(Cmd, User, PeerAddr) end; - _ -> - Shell - end, - Echo = get_echo(State#state.pty), - Group = group:start(self(), ShellFun, [{echo,Echo}]), - State#state{group = Group, buf = empty_buf()}. + ShellSpawner = + case State#state.shell of + Shell when is_function(Shell, 1) -> + [{user,User}] = ssh_connection_handler:connection_info(ConnectionHandler, [user]), + fun() -> Shell(User) end; + Shell when is_function(Shell, 2) -> + ConnectionInfo = + ssh_connection_handler:connection_info(ConnectionHandler, [peer, user]), + User = proplists:get_value(user, ConnectionInfo), + {_, PeerAddr} = proplists:get_value(peer, ConnectionInfo), + fun() -> Shell(User, PeerAddr) end; + {_,_,_} = Shell -> + Shell + end, + State#state{group = group:start(self(), ShellSpawner, [{echo, get_echo(State#state.pty)}]), + buf = empty_buf()}. + +%%-------------------------------------------------------------------- +start_exec_shell(ConnectionHandler, Cmd, State) -> + ExecShellSpawner = + case State#state.exec of + ExecShell when is_function(ExecShell, 1) -> + fun() -> ExecShell(Cmd) end; + ExecShell when is_function(ExecShell, 2) -> + [{user,User}] = ssh_connection_handler:connection_info(ConnectionHandler, [user]), + fun() -> ExecShell(Cmd, User) end; + ExecShell when is_function(ExecShell, 3) -> + ConnectionInfo = + ssh_connection_handler:connection_info(ConnectionHandler, [peer, user]), + User = proplists:get_value(user, ConnectionInfo), + {_, PeerAddr} = proplists:get_value(peer, ConnectionInfo), + fun() -> ExecShell(Cmd, User, PeerAddr) end; + {M,F,A} -> + {M, F, A++[Cmd]} + end, + State#state{group = group:start(self(), ExecShellSpawner, [{echo,false}]), + buf = empty_buf()}. + +%%-------------------------------------------------------------------- +exec_in_erlang_default_shell(Cmd) -> + case eval(parse(scan(Cmd))) of + {ok, Term} -> + {io_lib:format("~p\n", [Term]), 0, 0}; + {error, Error} when is_atom(Error) -> + {io_lib:format("Error in ~p: ~p\n", [Cmd,Error]), -1, 1}; + _ -> + {io_lib:format("Error: ~p\n", [Cmd]), -1, 1} + end. + +scan(Cmd) -> + erl_scan:string(Cmd). + +parse({ok, Tokens, _}) -> + erl_parse:parse_exprs(Tokens); +parse(Error) -> + Error. +eval({ok, Expr_list}) -> + case (catch erl_eval:exprs(Expr_list, + erl_eval:new_bindings())) of + {value, Value, _NewBindings} -> + {ok, Value}; + {'EXIT', {Error, _}} -> + {error, Error}; + {error, Error} -> + {error, Error}; + Error -> + {error, Error} + end; +eval({error,Error}) -> + {error, Error}; +eval(Error) -> + {error, Error}. + +%%-------------------------------------------------------------------- +exec_direct(ConnectionHandler, ExecSpec, Cmd) -> + try + case ExecSpec of + _ when is_function(ExecSpec, 1) -> + ExecSpec(Cmd); + _ when is_function(ExecSpec, 2) -> + [{user,User}] = ssh_connection_handler:connection_info(ConnectionHandler, [user]), + ExecSpec(Cmd, User); + _ when is_function(ExecSpec, 3) -> + ConnectionInfo = + ssh_connection_handler:connection_info(ConnectionHandler, [peer, user]), + User = proplists:get_value(user, ConnectionInfo), + {_, PeerAddr} = proplists:get_value(peer, ConnectionInfo), + ExecSpec(Cmd, User, PeerAddr) + end + of + Reply -> + return_direct_exec_reply(Reply, Cmd) + catch + C:Error -> + {io_lib:format("Error in \"~s\": ~p ~p~n", [Cmd,C,Error]), -1, 1} + end. + + + +return_direct_exec_reply(Reply, Cmd) -> + case fmt_exec_repl(Reply) of + {ok,S} -> + {S, 0, 0}; + {error,S} -> + {io_lib:format("Error in \"~s\": ~s~n", [Cmd,S]), -1, 1} + end. + +fmt_exec_repl({T,A}) when T==ok ; T==error -> + try + {T, io_lib:format("~s",[A])} + catch + error:badarg -> + {T, io_lib:format("~p", [A])}; + C:Err -> + {error, io_lib:format("~p:~p~n",[C,Err])} + end; +fmt_exec_repl(Other) -> + {error, io_lib:format("Bad exec-plugin return: ~p",[Other])}. + +%%-------------------------------------------------------------------- % Pty can be undefined if the client never sets any pty options before % starting the shell. get_echo(undefined) -> @@ -578,3 +625,19 @@ not_zero(0, B) -> not_zero(A, _) -> A. +%%%################################################################ +%%%# +%%%# Tracing +%%%# + +dbg_trace(points, _, _) -> [terminate]; + +dbg_trace(flags, terminate, _) -> [c]; +dbg_trace(on, terminate, _) -> dbg:tp(?MODULE, terminate, 2, x); +dbg_trace(off, terminate, _) -> dbg:ctpg(?MODULE, terminate, 2); +dbg_trace(format, terminate, {call, {?MODULE,terminate, [Reason, State]}}) -> + ["Cli Terminating:\n", + io_lib:format("Reason: ~p,~nState:~n~s", [Reason, wr_record(State)]) + ]. + +?wr_record(state). diff --git a/lib/ssh/src/ssh_client_channel.erl b/lib/ssh/src/ssh_client_channel.erl new file mode 100644 index 0000000000..f985d8e273 --- /dev/null +++ b/lib/ssh/src/ssh_client_channel.erl @@ -0,0 +1,458 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. +%% +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% + +%% + +-module(ssh_client_channel). + +-include("ssh.hrl"). +-include("ssh_connect.hrl"). + +-callback init(Args :: term()) -> + {ok, State :: term()} | {ok, State :: term(), timeout() | hibernate} | + {stop, Reason :: term()} | ignore. +-callback handle_call(Request :: term(), From :: {pid(), Tag :: term()}, + State :: term()) -> + {reply, Reply :: term(), NewState :: term()} | + {reply, Reply :: term(), NewState :: term(), timeout() | hibernate} | + {noreply, NewState :: term()} | + {noreply, NewState :: term(), timeout() | hibernate} | + {stop, Reason :: term(), Reply :: term(), NewState :: term()} | + {stop, Reason :: term(), NewState :: term()}. +-callback handle_cast(Request :: term(), State :: term()) -> + {noreply, NewState :: term()} | + {noreply, NewState :: term(), timeout() | hibernate} | + {stop, Reason :: term(), NewState :: term()}. + +-callback terminate(Reason :: (normal | shutdown | {shutdown, term()} | + term()), + State :: term()) -> + term(). +-callback code_change(OldVsn :: (term() | {down, term()}), State :: term(), + Extra :: term()) -> + {ok, NewState :: term()} | {error, Reason :: term()}. + +-callback handle_msg(Msg ::term(), State :: term()) -> + {ok, State::term()} | {stop, ChannelId::ssh:channel_id(), State::term()}. + +-callback handle_ssh_msg({ssh_cm, ConnectionRef::ssh:connection_ref(), SshMsg::term()}, + State::term()) -> {ok, State::term()} | + {stop, ChannelId::ssh:channel_id(), + State::term()}. +-behaviour(gen_server). + +%%% API +-export([start/4, start/5, start_link/4, start_link/5, call/2, call/3, + cast/2, reply/2, enter_loop/1]). + +%% gen_server callbacks +-export([init/1, handle_call/3, handle_cast/2, handle_info/2, + terminate/2, code_change/3]). + +%% Internal application API +-export([cache_create/0, cache_lookup/2, cache_update/2, + cache_delete/1, cache_delete/2, cache_foldl/3, + cache_info/2, cache_find/2, + get_print_info/1]). + +-export([dbg_trace/3]). + +-record(state, { + cm, + channel_cb, + channel_state, + channel_id, + close_sent = false + }). + +%%==================================================================== +%% API +%%==================================================================== + +call(ChannelPid, Msg) -> + call(ChannelPid, Msg, infinity). + +call(ChannelPid, Msg, TimeOute) -> + try gen_server:call(ChannelPid, Msg, TimeOute) of + Result -> + Result + catch + exit:{noproc, _} -> + {error, closed}; + exit:{normal, _} -> + {error, closed}; + exit:{shutdown, _} -> + {error, closed}; + exit:{{shutdown, _}, _} -> + {error, closed}; + exit:{timeout, _} -> + {error, timeout} + end. + +cast(ChannelPid, Msg) -> + gen_server:cast(ChannelPid, Msg). + + +reply(From, Msg) -> + gen_server:reply(From, Msg). + +%%==================================================================== +%% Internal application API +%%==================================================================== + +%%-------------------------------------------------------------------- +%% Function: start_link() -> {ok,Pid} | ignore | {error,Error} +%% Description: Starts the server +%%-------------------------------------------------------------------- +start(ConnectionManager, ChannelId, CallBack, CbInitArgs) -> + start(ConnectionManager, ChannelId, CallBack, CbInitArgs, undefined). + +start(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec) -> + Options = [{channel_cb, CallBack}, + {channel_id, ChannelId}, + {init_args, CbInitArgs}, + {cm, ConnectionManager}, + {exec, Exec}], + gen_server:start(?MODULE, [Options], []). + +start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs) -> + start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, undefined). + +start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec) -> + Options = [{channel_cb, CallBack}, + {channel_id, ChannelId}, + {init_args, CbInitArgs}, + {cm, ConnectionManager}, + {exec, Exec}], + gen_server:start_link(?MODULE, [Options], []). + +enter_loop(State) -> + gen_server:enter_loop(?MODULE, [], State). + +%%==================================================================== +%% gen_server callbacks +%%==================================================================== + +%%-------------------------------------------------------------------- +%% Function: init(Args) -> {ok, State} | +%% {ok, State, Timeout} | +%% ignore | +%% {stop, Reason} +%% Description: Initiates the server +%%-------------------------------------------------------------------- +init([Options]) -> + Cb = proplists:get_value(channel_cb, Options), + ConnectionManager = proplists:get_value(cm, Options), + ChannelId = proplists:get_value(channel_id, Options), + process_flag(trap_exit, true), + try Cb:init(channel_cb_init_args(Options)) of + {ok, ChannelState} -> + State = #state{cm = ConnectionManager, + channel_cb = Cb, + channel_id = ChannelId, + channel_state = ChannelState}, + self() ! {ssh_channel_up, ChannelId, ConnectionManager}, + {ok, State}; + {ok, ChannelState, Timeout} -> + State = #state{cm = ConnectionManager, + channel_cb = Cb, + channel_id = ChannelId, + channel_state = ChannelState}, + self() ! {ssh_channel_up, ChannelId, ConnectionManager}, + {ok, State, Timeout}; + {stop, Why} -> + {stop, Why} + catch + _:undef -> + {stop, {bad_channel_callback_module,Cb}}; + _:Reason -> + {stop, Reason} + end. + +channel_cb_init_args(Options) -> + case proplists:get_value(exec, Options) of + undefined -> + proplists:get_value(init_args, Options); + Exec -> + proplists:get_value(init_args, Options) ++ [Exec] + end. + +%%-------------------------------------------------------------------- +%% Function: %% handle_call(Request, From, State) -> {reply, Reply, State} | +%% {reply, Reply, State, Timeout} | +%% {noreply, State} | +%% {noreply, State, Timeout} | +%% {stop, Reason, Reply, State} | +%% {stop, Reason, State} +%% Description: Handling call messages +%%-------------------------------------------------------------------- +handle_call(get_print_info, _From, State) -> + Reply = + {{State#state.cm, + State#state.channel_id}, + io_lib:format('CB=~p',[State#state.channel_cb]) + }, + {reply, Reply, State}; + +handle_call(Request, From, #state{channel_cb = Module, + channel_state = ChannelState} = State) -> + try Module:handle_call(Request, From, ChannelState) of + Result -> + handle_cb_result(Result, State) + catch + error:{undef, _} -> + {noreply, State} + end. + + +%%-------------------------------------------------------------------- +%% Function: handle_cast(Msg, State) -> {noreply, State} | +%% {noreply, State, Timeout} | +%% {stop, Reason, State} +%% Description: Handling cast messages +%%-------------------------------------------------------------------- +handle_cast(Msg, #state{channel_cb = Module, + channel_state = ChannelState} = State) -> + + try Module:handle_cast(Msg, ChannelState) of + Result -> + handle_cb_result(Result, State) + catch + error:{undef, _} -> + {noreply, State} + end. + +%%-------------------------------------------------------------------- +%% Function: handle_info(Info, State) -> {noreply, State} | +%% {noreply, State, Timeout} | +%% {stop, Reason, State} +%% Description: Handling all non call/cast messages +%%-------------------------------------------------------------------- +handle_info({ssh_cm, ConnectionManager, {closed, _ChannelId}}, + #state{cm = ConnectionManager, + close_sent = true} = State) -> + {stop, normal, State}; +handle_info({ssh_cm, ConnectionManager, {closed, ChannelId}}, + #state{cm = ConnectionManager, + close_sent = false} = State) -> + %% To be on the safe side, i.e. the manager has already been terminated. + (catch ssh_connection:close(ConnectionManager, ChannelId)), + {stop, normal, State#state{close_sent = true}}; + +handle_info({ssh_cm, _, _} = Msg, #state{cm = ConnectionManager, + channel_cb = Module, + channel_state = ChannelState0} = State) -> + case Module:handle_ssh_msg(Msg, ChannelState0) of + {ok, ChannelState} -> + adjust_window(Msg), + {noreply, State#state{channel_state = ChannelState}}; + {ok, ChannelState, Timeout} -> + adjust_window(Msg), + {noreply, State#state{channel_state = ChannelState}, Timeout}; + {stop, ChannelId, ChannelState} -> + catch ssh_connection:close(ConnectionManager, ChannelId), + {stop, normal, State#state{close_sent = true, + channel_state = ChannelState}} + end; + +handle_info(Msg, #state{cm = ConnectionManager, channel_cb = Module, + channel_state = ChannelState0} = State) -> + case Module:handle_msg(Msg, ChannelState0) of + {ok, ChannelState} -> + {noreply, State#state{channel_state = ChannelState}}; + {ok, ChannelState, Timeout} -> + {noreply, State#state{channel_state = ChannelState}, Timeout}; + {stop, Reason, ChannelState} when is_atom(Reason)-> + {stop, Reason, State#state{close_sent = true, + channel_state = ChannelState}}; + {stop, ChannelId, ChannelState} -> + Reason = + case Msg of + {'EXIT', _Pid, shutdown} -> + shutdown; + _ -> + normal + end, + (catch ssh_connection:close(ConnectionManager, ChannelId)), + {stop, Reason, State#state{close_sent = true, + channel_state = ChannelState}} + end. + +%%-------------------------------------------------------------------- +%% Function: terminate(Reason, State) -> void() +%% Description: This function is called by a gen_server when it is about to +%% terminate. It should be the opposite of Module:init/1 and do any necessary +%% cleaning up. When it returns, the gen_server terminates with Reason. +%% The return value is ignored. +%%-------------------------------------------------------------------- +terminate(Reason, #state{cm = ConnectionManager, + channel_id = ChannelId, + close_sent = false} = State) -> + catch ssh_connection:close(ConnectionManager, ChannelId), + terminate(Reason, State#state{close_sent = true}); +terminate(Reason, #state{channel_cb = Cb, channel_state = ChannelState}) -> + catch Cb:terminate(Reason, ChannelState), + ok. + +%%-------------------------------------------------------------------- +%% Func: code_change(OldVsn, State, Extra) -> {ok, NewState} +%% Description: Convert process state when code is changed +%%-------------------------------------------------------------------- +code_change(OldVsn, #state{channel_cb = Module, + channel_state = ChannelState0} = State, Extra) -> + {ok, ChannelState} = Module:code_change(OldVsn, ChannelState0, Extra), + {ok, State#state{channel_state = ChannelState}}. + +%%==================================================================== +%% Internal application API +%%==================================================================== +cache_create() -> + ets:new(cm_tab, [set,{keypos, #channel.local_id}]). + +cache_lookup(Cache, Key) -> + case ets:lookup(Cache, Key) of + [Channel] -> + Channel; + [] -> + undefined + end. + +cache_update(Cache, #channel{local_id = Id} = Entry) when Id =/= undefined -> + ets:insert(Cache, Entry). + +cache_delete(Cache, Key) -> + ets:delete(Cache, Key). + +cache_delete(Cache) -> + ets:delete(Cache). + +cache_foldl(Fun, Acc, Cache) -> + ets:foldl(Fun, Acc, Cache). + +cache_info(num_entries, Cache) -> + proplists:get_value(size, ets:info(Cache)). + +cache_find(ChannelPid, Cache) -> + case ets:match_object(Cache, #channel{user = ChannelPid}) of + [] -> + undefined; + [Channel] -> + Channel + end. + +get_print_info(Pid) -> + call(Pid, get_print_info, 1000). + +%%-------------------------------------------------------------------- +%%% Internal functions +%%-------------------------------------------------------------------- +handle_cb_result({reply, Reply, ChannelState}, State) -> + {reply, Reply, State#state{channel_state = ChannelState}}; +handle_cb_result({reply, Reply, ChannelState, Timeout}, State) -> + {reply, Reply,State#state{channel_state = ChannelState}, Timeout}; +handle_cb_result({noreply, ChannelState}, State) -> + {noreply, State#state{channel_state = ChannelState}}; +handle_cb_result({noreply, ChannelState, Timeout}, State) -> + {noreply, State#state{channel_state = ChannelState}, Timeout}; +handle_cb_result({stop, Reason, Reply, ChannelState}, State) -> + {stop, Reason, Reply, State#state{channel_state = ChannelState}}; +handle_cb_result({stop, Reason, ChannelState}, State) -> + {stop, Reason, State#state{channel_state = ChannelState}}. + +adjust_window({ssh_cm, ConnectionManager, + {data, ChannelId, _, Data}}) -> + ssh_connection:adjust_window(ConnectionManager, ChannelId, size(Data)); +adjust_window(_) -> + ok. + + +%%%################################################################ +%%%# +%%%# Tracing +%%%# + +dbg_trace(points, _, _) -> [terminate, channels, channel_events]; + + +dbg_trace(flags, channels, A) -> [c] ++ dbg_trace(flags, terminate, A); +dbg_trace(on, channels, A) -> dbg:tp(?MODULE, init, 1, x), + dbg_trace(on, terminate, A); +dbg_trace(off, channels, A) -> dbg:ctpg(?MODULE, init, 1), + dbg_trace(off, terminate, A); +dbg_trace(format, channels, {call, {?MODULE,init, [[KVs]]}}) -> + ["Server Channel Starting:\n", + io_lib:format("Connection: ~p, ChannelId: ~p, CallBack: ~p\nCallBack init args = ~p", + [proplists:get_value(K,KVs) || K <- [cm, channel_id, channel_cb]] + ++ [channel_cb_init_args(KVs)]) + ]; +dbg_trace(format, channels, {return_from, {?MODULE,init,1}, {stop,Reason}}) -> + ["Server Channel Start FAILED!\n", + io_lib:format("Reason = ~p", [Reason]) + ]; +dbg_trace(format, channels, F) -> + dbg_trace(format, terminate, F); + + +dbg_trace(flags, terminate, _) -> [c]; +dbg_trace(on, terminate, _) -> dbg:tp(?MODULE, terminate, 2, x); +dbg_trace(off, terminate, _) -> dbg:ctpg(?MODULE, terminate, 2); +dbg_trace(format, terminate, {call, {?MODULE,terminate, [Reason, State]}}) -> + ["Server Channel Terminating:\n", + io_lib:format("Reason: ~p,~nState:~n~s", [Reason, wr_record(State)]) + ]; + +dbg_trace(flags, channel_events, _) -> [c]; +dbg_trace(on, channel_events, _) -> dbg:tp(?MODULE, handle_call, 3, x), + dbg:tp(?MODULE, handle_cast, 2, x), + dbg:tp(?MODULE, handle_info, 2, x); +dbg_trace(off, channel_events, _) -> dbg:ctpg(?MODULE, handle_call, 3), + dbg:ctpg(?MODULE, handle_cast, 2), + dbg:ctpg(?MODULE, handle_info, 2); +dbg_trace(format, channel_events, {call, {?MODULE,handle_call, [Call,From,State]}}) -> + [hdr("is called", State), + io_lib:format("From: ~p~nCall: ~p~n", [From, Call]) + ]; +dbg_trace(format, channel_events, {return_from, {?MODULE,handle_call,3}, Ret}) -> + ["Server Channel call returned:\n", + io_lib:format("~p~n", [ssh_dbg:reduce_state(Ret)]) + ]; +dbg_trace(format, channel_events, {call, {?MODULE,handle_cast, [Cast,State]}}) -> + [hdr("got cast", State), + io_lib:format("Cast: ~p~n", [Cast]) + ]; +dbg_trace(format, channel_events, {return_from, {?MODULE,handle_cast,2}, Ret}) -> + ["Server Channel cast returned:\n", + io_lib:format("~p~n", [ssh_dbg:reduce_state(Ret)]) + ]; +dbg_trace(format, channel_events, {call, {?MODULE,handle_info, [Info,State]}}) -> + [hdr("got info", State), + io_lib:format("Info: ~p~n", [Info]) + ]; +dbg_trace(format, channel_events, {return_from, {?MODULE,handle_info,2}, Ret}) -> + ["Server Channel info returned:\n", + io_lib:format("~p~n", [ssh_dbg:reduce_state(Ret)]) + ]. + +hdr(Title, S) -> + io_lib:format("Server Channel (Id=~p, CB=~p) ~s:\n", [S#state.channel_id, S#state.channel_cb, Title]). + +?wr_record(state). + + diff --git a/lib/ssh/src/ssh_client_key.erl b/lib/ssh/src/ssh_client_key.erl deleted file mode 100644 index 5296ac2a02..0000000000 --- a/lib/ssh/src/ssh_client_key.erl +++ /dev/null @@ -1,35 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2011-2016. All Rights Reserved. -%% -%% Licensed under the Apache License, Version 2.0 (the "License"); -%% you may not use this file except in compliance with the License. -%% You may obtain a copy of the License at -%% -%% http://www.apache.org/licenses/LICENSE-2.0 -%% -%% Unless required by applicable law or agreed to in writing, software -%% distributed under the License is distributed on an "AS IS" BASIS, -%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -%% See the License for the specific language governing permissions and -%% limitations under the License. -%% -%% %CopyrightEnd% -%% - --module(ssh_client_key). - --include_lib("public_key/include/public_key.hrl"). --include("ssh.hrl"). - --callback is_host_key(Key :: public_key(), Host :: string(), - Algorithm :: 'ssh-rsa'| 'ssh-dsa'| atom(), Options :: proplists:proplist()) -> - boolean(). - --callback user_key(Algorithm :: 'ssh-rsa'| 'ssh-dsa'| atom(), Options :: list()) -> - {ok, PrivateKey :: term()} | {error, string()}. - - --callback add_host_key(Host :: string(), PublicKey :: term(), Options :: list()) -> - ok | {error, Error::term()}. diff --git a/lib/ssh/src/ssh_client_key_api.erl b/lib/ssh/src/ssh_client_key_api.erl index 6e994ff292..384740b786 100644 --- a/lib/ssh/src/ssh_client_key_api.erl +++ b/lib/ssh/src/ssh_client_key_api.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2011-2016. All Rights Reserved. +%% Copyright Ericsson AB 2011-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -23,26 +23,25 @@ -include_lib("public_key/include/public_key.hrl"). -include("ssh.hrl"). --export_type([algorithm/0]). +-export_type([client_key_cb_options/0]). --type algorithm() :: 'ssh-rsa' - | 'ssh-dss' - | 'ecdsa-sha2-nistp256' - | 'ecdsa-sha2-nistp384' - | 'ecdsa-sha2-nistp521' - . +-type client_key_cb_options() :: [{key_cb_private,term()} | ssh:client_option()]. --callback is_host_key(PublicKey :: public_key:public_key(), - Host :: string(), - Algorithm :: algorithm(), - ConnectOptions :: proplists:proplist()) -> +-callback is_host_key(Key :: public_key:public_key(), + Host :: string(), + Algorithm :: ssh:pubkey_alg(), + Options :: client_key_cb_options() + ) -> boolean(). --callback user_key(Algorithm :: algorithm(), - ConnectOptions :: proplists:proplist()) -> - {ok, PrivateKey::public_key:private_key()} | {error, term()}. +-callback user_key(Algorithm :: ssh:pubkey_alg(), + Options :: client_key_cb_options() + ) -> + {ok, PrivateKey :: public_key:private_key()} | {error, string()}. --callback add_host_key(Host :: string(), PublicKey :: public_key:public_key(), - Options :: proplists:proplist()) -> +-callback add_host_key(Host :: string(), + PublicKey :: public_key:public_key(), + Options :: client_key_cb_options() + ) -> ok | {error, Error::term()}. diff --git a/lib/ssh/src/ssh_connect.hrl b/lib/ssh/src/ssh_connect.hrl index a8de5f9a2f..9a060b8304 100644 --- a/lib/ssh/src/ssh_connect.hrl +++ b/lib/ssh/src/ssh_connect.hrl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2005-2017. All Rights Reserved. +%% Copyright Ericsson AB 2005-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -22,10 +22,6 @@ %%% Description : SSH connection protocol --type channel_id() :: pos_integer(). --type connection_ref() :: pid(). - - -define(DEFAULT_PACKET_SIZE, 65536). -define(DEFAULT_WINDOW_SIZE, 10*?DEFAULT_PACKET_SIZE). diff --git a/lib/ssh/src/ssh_connection.erl b/lib/ssh/src/ssh_connection.erl index 946ae2967b..83f85b1d8e 100644 --- a/lib/ssh/src/ssh_connection.erl +++ b/lib/ssh/src/ssh_connection.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -40,40 +40,56 @@ -export([window_change/4, window_change/6, signal/3, exit_status/3]). -%% Internal application API --export([channel_data/5, handle_msg/3, channel_eof_msg/1, - channel_close_msg/1, channel_success_msg/1, channel_failure_msg/1, +%% Internal SSH application API +-export([channel_data/5, + handle_msg/3, + handle_stop/1, + + channel_adjust_window_msg/2, + channel_close_msg/1, + channel_open_failure_msg/4, + channel_open_msg/5, channel_status_msg/1, - channel_adjust_window_msg/2, channel_data_msg/3, - channel_open_msg/5, channel_open_confirmation_msg/4, - channel_open_failure_msg/4, channel_request_msg/4, + channel_data_msg/3, + channel_eof_msg/1, + channel_failure_msg/1, + channel_open_confirmation_msg/4, + channel_request_msg/4, + channel_success_msg/1, + request_failure_msg/0, - request_success_msg/1, bind/4, unbind/3, unbind_channel/2, - bound_channel/3, encode_ip/1]). + request_success_msg/1, + + bind/4, unbind/3, unbind_channel/2, + bound_channel/3, encode_ip/1 + ]). + +-type connection_ref() :: ssh:connection_ref(). +-type channel_id() :: ssh:channel_id(). %%-------------------------------------------------------------------- %%% API %%-------------------------------------------------------------------- %%-------------------------------------------------------------------- --spec session_channel(connection_ref(), timeout()) -> {ok, channel_id()} | {error, timeout | closed}. --spec session_channel(connection_ref(), integer(), integer(), timeout()) -> {ok, channel_id()} | {error, timeout | closed}. - %% Description: Opens a channel for a ssh session. A session is a %% remote execution of a program. The program may be a shell, an %% application, a system command, or some built-in subsystem. %% -------------------------------------------------------------------- +-spec session_channel(connection_ref(), timeout()) -> + {ok, channel_id()} | {error, timeout | closed}. + session_channel(ConnectionHandler, Timeout) -> - session_channel(ConnectionHandler, - ?DEFAULT_WINDOW_SIZE, ?DEFAULT_PACKET_SIZE, - Timeout). + session_channel(ConnectionHandler, ?DEFAULT_WINDOW_SIZE, ?DEFAULT_PACKET_SIZE, Timeout). + +-spec session_channel(connection_ref(), integer(), integer(), timeout()) -> + {ok, channel_id()} | {error, timeout | closed}. -session_channel(ConnectionHandler, InitialWindowSize, - MaxPacketSize, Timeout) -> +session_channel(ConnectionHandler, InitialWindowSize, MaxPacketSize, Timeout) -> case ssh_connection_handler:open_channel(ConnectionHandler, "session", <<>>, - InitialWindowSize, - MaxPacketSize, Timeout) of + InitialWindowSize, + MaxPacketSize, Timeout) of {open, Channel} -> {ok, Channel}; Error -> @@ -81,55 +97,63 @@ session_channel(ConnectionHandler, InitialWindowSize, end. %%-------------------------------------------------------------------- --spec exec(connection_ref(), channel_id(), string(), timeout()) -> - success | failure | {error, timeout | closed}. - %% Description: Will request that the server start the %% execution of the given command. %%-------------------------------------------------------------------- +-spec exec(connection_ref(), channel_id(), string(), timeout()) -> + success | failure | {error, timeout | closed}. + exec(ConnectionHandler, ChannelId, Command, TimeOut) -> ssh_connection_handler:request(ConnectionHandler, self(), ChannelId, "exec", true, [?string(Command)], TimeOut). %%-------------------------------------------------------------------- --spec shell(connection_ref(), channel_id()) -> _. - %% Description: Will request that the user's default shell (typically %% defined in /etc/passwd in UNIX systems) be started at the other %% end. %%-------------------------------------------------------------------- +-spec shell(connection_ref(), channel_id()) -> + ok | success | failure | {error, timeout}. + shell(ConnectionHandler, ChannelId) -> ssh_connection_handler:request(ConnectionHandler, self(), ChannelId, "shell", false, <<>>, 0). %%-------------------------------------------------------------------- --spec subsystem(connection_ref(), channel_id(), string(), timeout()) -> - success | failure | {error, timeout | closed}. %% %% Description: Executes a predefined subsystem. %%-------------------------------------------------------------------- +-spec subsystem(connection_ref(), channel_id(), string(), timeout()) -> + success | failure | {error, timeout | closed}. + subsystem(ConnectionHandler, ChannelId, SubSystem, TimeOut) -> ssh_connection_handler:request(ConnectionHandler, self(), ChannelId, "subsystem", true, [?string(SubSystem)], TimeOut). %%-------------------------------------------------------------------- --spec send(connection_ref(), channel_id(), iodata()) -> - ok | {error, closed}. --spec send(connection_ref(), channel_id(), integer()| iodata(), timeout() | iodata()) -> - ok | {error, timeout} | {error, closed}. --spec send(connection_ref(), channel_id(), integer(), iodata(), timeout()) -> - ok | {error, timeout} | {error, closed}. -%% -%% %% Description: Sends channel data. %%-------------------------------------------------------------------- +-spec send(connection_ref(), channel_id(), iodata()) -> + ok | {error, timeout | closed}. send(ConnectionHandler, ChannelId, Data) -> send(ConnectionHandler, ChannelId, 0, Data, infinity). + + +-spec send(connection_ref(), channel_id(), integer()| iodata(), timeout() | iodata()) -> + ok | {error, timeout | closed}. + send(ConnectionHandler, ChannelId, Data, TimeOut) when is_integer(TimeOut) -> send(ConnectionHandler, ChannelId, 0, Data, TimeOut); + send(ConnectionHandler, ChannelId, Data, infinity) -> send(ConnectionHandler, ChannelId, 0, Data, infinity); + send(ConnectionHandler, ChannelId, Type, Data) -> send(ConnectionHandler, ChannelId, Type, Data, infinity). + + +-spec send(connection_ref(), channel_id(), integer(), iodata(), timeout()) -> + ok | {error, timeout | closed}. + send(ConnectionHandler, ChannelId, Type, Data, TimeOut) -> ssh_connection_handler:send(ConnectionHandler, ChannelId, Type, Data, TimeOut). @@ -143,7 +167,7 @@ send_eof(ConnectionHandler, Channel) -> ssh_connection_handler:send_eof(ConnectionHandler, Channel). %%-------------------------------------------------------------------- --spec adjust_window(connection_ref(), channel_id(), integer()) -> ok | {error, closed}. +-spec adjust_window(connection_ref(), channel_id(), integer()) -> ok. %% %% %% Description: Adjusts the ssh flowcontrol window. @@ -185,17 +209,18 @@ reply_request(_,false, _, _) -> ok. %%-------------------------------------------------------------------- --spec ptty_alloc(connection_ref(), channel_id(), proplists:proplist()) -> - success | failiure | {error, closed}. --spec ptty_alloc(connection_ref(), channel_id(), proplists:proplist(), timeout()) -> - success | failiure | {error, timeout} | {error, closed}. - -%% -%% %% Description: Sends a ssh connection protocol pty_req. %%-------------------------------------------------------------------- +-spec ptty_alloc(connection_ref(), channel_id(), proplists:proplist()) -> + success | failure | {error, timeout}. + ptty_alloc(ConnectionHandler, Channel, Options) -> ptty_alloc(ConnectionHandler, Channel, Options, infinity). + + +-spec ptty_alloc(connection_ref(), channel_id(), proplists:proplist(), timeout()) -> + success | failure | {error, timeout | closed}. + ptty_alloc(ConnectionHandler, Channel, Options0, TimeOut) -> TermData = backwards_compatible(Options0, []), % FIXME {Width, PixWidth} = pty_default_dimensions(width, TermData), @@ -232,33 +257,21 @@ exit_status(ConnectionHandler, Channel, Status) -> "exit-status", false, [?uint32(Status)], 0). %%-------------------------------------------------------------------- -%%% Internal API +%%% Internal, that is, ssh application internal API %%-------------------------------------------------------------------- -l2b(L) when is_integer(hd(L)) -> - try list_to_binary(L) - of - B -> B - catch - _:_ -> - unicode:characters_to_binary(L) - end; -l2b([H|T]) -> - << (l2b(H))/binary, (l2b(T))/binary >>; -l2b(B) when is_binary(B) -> - B; -l2b([]) -> - <<>>. - +%%%---------------------------------------------------------------- +%%% Send data on a channel/connection as result of for example +%%% ssh_connection:send (executed in the ssh_connection_state machine) +%%% -channel_data(ChannelId, DataType, Data, Connection, From) - when is_list(Data)-> +channel_data(ChannelId, DataType, Data, Connection, From) when is_list(Data)-> channel_data(ChannelId, DataType, l2b(Data), Connection, From); channel_data(ChannelId, DataType, Data, #connection{channel_cache = Cache} = Connection, From) -> - case ssh_channel:cache_lookup(Cache, ChannelId) of + case ssh_client_channel:cache_lookup(Cache, ChannelId) of #channel{remote_id = Id, sent_close = false} = Channel0 -> {SendList, Channel} = update_send_window(Channel0#channel{flow_control = From}, DataType, @@ -271,11 +284,18 @@ channel_data(ChannelId, DataType, Data, SendData)} end, SendList), FlowCtrlMsgs = flow_control(Replies, Channel, Cache), - {{replies, Replies ++ FlowCtrlMsgs}, Connection}; + {Replies ++ FlowCtrlMsgs, Connection}; _ -> - {{replies,[{channel_request_reply,From,{error,closed}}]}, Connection} + {[{channel_request_reply,From,{error,closed}}], Connection} end. +%%%---------------------------------------------------------------- +%%% Handle the channel messages on behalf of the ssh_connection_handler +%%% state machine. +%%% +%%% Replies {Reply, UpdatedConnection} +%%% + handle_msg(#ssh_msg_channel_open_confirmation{recipient_channel = ChannelId, sender_channel = RemoteId, initial_window_size = WindowSz, @@ -283,63 +303,42 @@ handle_msg(#ssh_msg_channel_open_confirmation{recipient_channel = ChannelId, #connection{channel_cache = Cache} = Connection0, _) -> #channel{remote_id = undefined} = Channel = - ssh_channel:cache_lookup(Cache, ChannelId), + ssh_client_channel:cache_lookup(Cache, ChannelId), - ssh_channel:cache_update(Cache, Channel#channel{ + ssh_client_channel:cache_update(Cache, Channel#channel{ remote_id = RemoteId, recv_packet_size = max(32768, % rfc4254/5.2 min(PacketSz, Channel#channel.recv_packet_size) ), send_window_size = WindowSz, send_packet_size = PacketSz}), - {Reply, Connection} = reply_msg(Channel, Connection0, {open, ChannelId}), - {{replies, [Reply]}, Connection}; + reply_msg(Channel, Connection0, {open, ChannelId}); handle_msg(#ssh_msg_channel_open_failure{recipient_channel = ChannelId, reason = Reason, description = Descr, lang = Lang}, #connection{channel_cache = Cache} = Connection0, _) -> - Channel = ssh_channel:cache_lookup(Cache, ChannelId), - ssh_channel:cache_delete(Cache, ChannelId), - {Reply, Connection} = - reply_msg(Channel, Connection0, {open_error, Reason, Descr, Lang}), - {{replies, [Reply]}, Connection}; + Channel = ssh_client_channel:cache_lookup(Cache, ChannelId), + ssh_client_channel:cache_delete(Cache, ChannelId), + reply_msg(Channel, Connection0, {open_error, Reason, Descr, Lang}); -handle_msg(#ssh_msg_channel_success{recipient_channel = ChannelId}, - #connection{channel_cache = Cache} = Connection0, _) -> - Channel = ssh_channel:cache_lookup(Cache, ChannelId), - case reply_msg(Channel, Connection0, success) of - {[], Connection} -> - {noreply, Connection}; - {Reply, Connection} -> - {{replies, [Reply]}, Connection} - end; +handle_msg(#ssh_msg_channel_success{recipient_channel = ChannelId}, Connection, _) -> + reply_msg(ChannelId, Connection, success); -handle_msg(#ssh_msg_channel_failure{recipient_channel = ChannelId}, - #connection{channel_cache = Cache} = Connection0, _) -> - Channel = ssh_channel:cache_lookup(Cache, ChannelId), - case reply_msg(Channel, Connection0, failure) of - {[], Connection} -> - {noreply, Connection}; - {Reply, Connection} -> - {{replies, [Reply]}, Connection} - end; +handle_msg(#ssh_msg_channel_failure{recipient_channel = ChannelId}, Connection, _) -> + reply_msg(ChannelId, Connection, failure); - -handle_msg(#ssh_msg_channel_eof{recipient_channel = ChannelId}, - #connection{channel_cache = Cache} = Connection0, _) -> - Channel = ssh_channel:cache_lookup(Cache, ChannelId), - {Reply, Connection} = reply_msg(Channel, Connection0, {eof, ChannelId}), - {{replies, [Reply]}, Connection}; +handle_msg(#ssh_msg_channel_eof{recipient_channel = ChannelId}, Connection, _) -> + reply_msg(ChannelId, Connection, {eof, ChannelId}); handle_msg(#ssh_msg_channel_close{recipient_channel = ChannelId}, #connection{channel_cache = Cache} = Connection0, _) -> - case ssh_channel:cache_lookup(Cache, ChannelId) of + case ssh_client_channel:cache_lookup(Cache, ChannelId) of #channel{sent_close = Closed, remote_id = RemoteId, flow_control = FlowControl} = Channel -> - ssh_channel:cache_delete(Cache, ChannelId), + ssh_client_channel:cache_delete(Cache, ChannelId), {CloseMsg, Connection} = reply_msg(Channel, Connection0, {closed, ChannelId}), ConnReplyMsgs = @@ -358,48 +357,29 @@ handle_msg(#ssh_msg_channel_close{recipient_channel = ChannelId}, [{flow_control, From, {error, closed}}] end, - Replies = ConnReplyMsgs ++ [CloseMsg] ++ SendReplyMsgs, - {{replies, Replies}, Connection}; + Replies = ConnReplyMsgs ++ CloseMsg ++ SendReplyMsgs, + {Replies, Connection}; undefined -> - {{replies, []}, Connection0} + {[], Connection0} end; handle_msg(#ssh_msg_channel_data{recipient_channel = ChannelId, data = Data}, - #connection{channel_cache = Cache} = Connection0, _) -> - - case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{recv_window_size = Size} = Channel -> - WantedSize = Size - size(Data), - ssh_channel:cache_update(Cache, Channel#channel{ - recv_window_size = WantedSize}), - {Replies, Connection} = - channel_data_reply(Cache, Channel, Connection0, 0, Data), - {{replies, Replies}, Connection}; - undefined -> - {noreply, Connection0} - end; + Connection, _) -> + channel_data_reply_msg(ChannelId, Connection, 0, Data); handle_msg(#ssh_msg_channel_extended_data{recipient_channel = ChannelId, data_type_code = DataType, data = Data}, - #connection{channel_cache = Cache} = Connection0, _) -> - - #channel{recv_window_size = Size} = Channel = - ssh_channel:cache_lookup(Cache, ChannelId), - WantedSize = Size - size(Data), - ssh_channel:cache_update(Cache, Channel#channel{ - recv_window_size = WantedSize}), - {Replies, Connection} = - channel_data_reply(Cache, Channel, Connection0, DataType, Data), - {{replies, Replies}, Connection}; + Connection, _) -> + channel_data_reply_msg(ChannelId, Connection, DataType, Data); handle_msg(#ssh_msg_channel_window_adjust{recipient_channel = ChannelId, bytes_to_add = Add}, #connection{channel_cache = Cache} = Connection, _) -> #channel{send_window_size = Size, remote_id = RemoteId} = - Channel0 = ssh_channel:cache_lookup(Cache, ChannelId), + Channel0 = ssh_client_channel:cache_lookup(Cache, ChannelId), {SendList, Channel} = %% TODO: Datatype 0 ? update_send_window(Channel0#channel{send_window_size = Size + Add}, @@ -409,7 +389,7 @@ handle_msg(#ssh_msg_channel_window_adjust{recipient_channel = ChannelId, {connection_reply, channel_data_msg(RemoteId, Type, Data)} end, SendList), FlowCtrlMsgs = flow_control(Channel, Cache), - {{replies, Replies ++ FlowCtrlMsgs}, Connection}; + {Replies ++ FlowCtrlMsgs, Connection}; handle_msg(#ssh_msg_channel_open{channel_type = "session" = Type, sender_channel = RemoteId, @@ -430,8 +410,7 @@ handle_msg(#ssh_msg_channel_open{channel_type = "session" = Type, FailMsg = channel_open_failure_msg(RemoteId, ?SSH_OPEN_CONNECT_FAILED, "Connection refused", "en"), - {{replies, [{connection_reply, FailMsg}]}, - Connection0} + {[{connection_reply, FailMsg}], Connection0} end; MinAcceptedPackSz > PacketSz -> @@ -439,7 +418,7 @@ handle_msg(#ssh_msg_channel_open{channel_type = "session" = Type, ?SSH_OPEN_ADMINISTRATIVELY_PROHIBITED, lists:concat(["Maximum packet size below ",MinAcceptedPackSz, " not supported"]), "en"), - {{replies, [{connection_reply, FailMsg}]}, Connection0} + {[{connection_reply, FailMsg}], Connection0} end; handle_msg(#ssh_msg_channel_open{channel_type = "session", @@ -452,35 +431,31 @@ handle_msg(#ssh_msg_channel_open{channel_type = "session", FailMsg = channel_open_failure_msg(RemoteId, ?SSH_OPEN_CONNECT_FAILED, "Connection refused", "en"), - {{replies, [{connection_reply, FailMsg}]}, - Connection}; + {[{connection_reply, FailMsg}], Connection}; handle_msg(#ssh_msg_channel_open{sender_channel = RemoteId}, Connection, _) -> FailMsg = channel_open_failure_msg(RemoteId, ?SSH_OPEN_ADMINISTRATIVELY_PROHIBITED, "Not allowed", "en"), - {{replies, [{connection_reply, FailMsg}]}, Connection}; + {[{connection_reply, FailMsg}], Connection}; handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, request_type = "exit-status", data = Data}, - #connection{channel_cache = Cache} = Connection, _) -> + Connection, _) -> <<?UINT32(Status)>> = Data, - Channel = ssh_channel:cache_lookup(Cache, ChannelId), - {Reply, Connection} = - reply_msg(Channel, Connection, {exit_status, ChannelId, Status}), - {{replies, [Reply]}, Connection}; + reply_msg(ChannelId, Connection, {exit_status, ChannelId, Status}); handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, request_type = "exit-signal", want_reply = false, data = Data}, - #connection{channel_cache = Cache} = Connection0, _) -> - <<?UINT32(SigLen), SigName:SigLen/binary, - ?BOOLEAN(_Core), - ?UINT32(ErrLen), Err:ErrLen/binary, - ?UINT32(LangLen), Lang:LangLen/binary>> = Data, - Channel = ssh_channel:cache_lookup(Cache, ChannelId), + #connection{channel_cache = Cache} = Connection0, _) -> + <<?DEC_BIN(SigName, _SigLen), + ?BOOLEAN(_Core), + ?DEC_BIN(Err, _ErrLen), + ?DEC_BIN(Lang, _LangLen)>> = Data, + Channel = ssh_client_channel:cache_lookup(Cache, ChannelId), RemoteId = Channel#channel.remote_id, {Reply, Connection} = reply_msg(Channel, Connection0, {exit_signal, ChannelId, @@ -488,167 +463,139 @@ handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, binary_to_list(Err), binary_to_list(Lang)}), CloseMsg = channel_close_msg(RemoteId), - {{replies, [{connection_reply, CloseMsg}, Reply]}, - Connection}; + {[{connection_reply, CloseMsg}|Reply], Connection}; handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, request_type = "xon-xoff", want_reply = false, data = Data}, - #connection{channel_cache = Cache} = Connection, _) -> + Connection, _) -> <<?BOOLEAN(CDo)>> = Data, - Channel = ssh_channel:cache_lookup(Cache, ChannelId), - {Reply, Connection} = - reply_msg(Channel, Connection, {xon_xoff, ChannelId, CDo=/= 0}), - {{replies, [Reply]}, Connection}; + reply_msg(ChannelId, Connection, {xon_xoff, ChannelId, CDo=/= 0}); handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, request_type = "window-change", want_reply = false, data = Data}, - #connection{channel_cache = Cache} = Connection0, _) -> + Connection0, _) -> <<?UINT32(Width),?UINT32(Height), - ?UINT32(PixWidth), ?UINT32(PixHeight)>> = Data, - Channel = ssh_channel:cache_lookup(Cache, ChannelId), - {Reply, Connection} = - reply_msg(Channel, Connection0, {window_change, ChannelId, - Width, Height, - PixWidth, PixHeight}), - {{replies, [Reply]}, Connection}; + ?UINT32(PixWidth), ?UINT32(PixHeight)>> = Data, + reply_msg(ChannelId, Connection0, {window_change, ChannelId, + Width, Height, + PixWidth, PixHeight}); handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, request_type = "signal", data = Data}, - #connection{channel_cache = Cache} = Connection0, _) -> - <<?UINT32(SigLen), SigName:SigLen/binary>> = Data, - - Channel = ssh_channel:cache_lookup(Cache, ChannelId), - {Reply, Connection} = - reply_msg(Channel, Connection0, {signal, ChannelId, - binary_to_list(SigName)}), - {{replies, [Reply]}, Connection}; + Connection0, _) -> + <<?DEC_BIN(SigName, _SigLen)>> = Data, + reply_msg(ChannelId, Connection0, {signal, ChannelId, + binary_to_list(SigName)}); handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, request_type = "subsystem", want_reply = WantReply, data = Data}, #connection{channel_cache = Cache} = Connection, server) -> - <<?UINT32(SsLen), SsName:SsLen/binary>> = Data, - - #channel{remote_id = RemoteId} = Channel0 = - ssh_channel:cache_lookup(Cache, ChannelId), - - ReplyMsg = {subsystem, ChannelId, WantReply, binary_to_list(SsName)}, - - try - {ok, Pid} = start_subsystem(SsName, Connection, Channel0, ReplyMsg), - erlang:monitor(process, Pid), - Channel = Channel0#channel{user = Pid}, - ssh_channel:cache_update(Cache, Channel), - Reply = {connection_reply, - channel_success_msg(RemoteId)}, - {{replies, [Reply]}, Connection} - catch - _:_ -> - ErrorReply = {connection_reply, - channel_failure_msg(RemoteId)}, - {{replies, [ErrorReply]}, Connection} - end; + <<?DEC_BIN(SsName,_SsLen)>> = Data, + #channel{remote_id=RemoteId} = Channel = + ssh_client_channel:cache_lookup(Cache, ChannelId), + Reply = + try + start_subsystem(SsName, Connection, Channel, + {subsystem, ChannelId, WantReply, binary_to_list(SsName)}) + of + {ok, Pid} -> + erlang:monitor(process, Pid), + ssh_client_channel:cache_update(Cache, Channel#channel{user=Pid}), + channel_success_msg(RemoteId); + {error,_Error} -> + channel_failure_msg(RemoteId) + catch + _:_ -> + channel_failure_msg(RemoteId) + end, + {[{connection_reply,Reply}], Connection}; handle_msg(#ssh_msg_channel_request{request_type = "subsystem"}, Connection, client) -> %% The client SHOULD ignore subsystem requests. See RFC 4254 6.5. - {{replies, []}, Connection}; + {[], Connection}; handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, request_type = "pty-req", want_reply = WantReply, data = Data}, - #connection{channel_cache = Cache} = Connection, server) -> - <<?UINT32(TermLen), BTermName:TermLen/binary, - ?UINT32(Width),?UINT32(Height), - ?UINT32(PixWidth), ?UINT32(PixHeight), - Modes/binary>> = Data, + Connection, server) -> + <<?DEC_BIN(BTermName,_TermLen), + ?UINT32(Width),?UINT32(Height), + ?UINT32(PixWidth), ?UINT32(PixHeight), + Modes/binary>> = Data, TermName = binary_to_list(BTermName), - PtyRequest = {TermName, Width, Height, PixWidth, PixHeight, decode_pty_opts(Modes)}, - - Channel = ssh_channel:cache_lookup(Cache, ChannelId), - handle_cli_msg(Connection, Channel, + handle_cli_msg(Connection, ChannelId, {pty, ChannelId, WantReply, PtyRequest}); handle_msg(#ssh_msg_channel_request{request_type = "pty-req"}, Connection, client) -> %% The client SHOULD ignore pty requests. See RFC 4254 6.2. - {{replies, []}, Connection}; + {[], Connection}; handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, request_type = "shell", want_reply = WantReply}, - #connection{channel_cache = Cache} = Connection, server) -> - - Channel = ssh_channel:cache_lookup(Cache, ChannelId), - - handle_cli_msg(Connection, Channel, + Connection, server) -> + handle_cli_msg(Connection, ChannelId, {shell, ChannelId, WantReply}); handle_msg(#ssh_msg_channel_request{request_type = "shell"}, Connection, client) -> %% The client SHOULD ignore shell requests. See RFC 4254 6.5. - {{replies, []}, Connection}; + {[], Connection}; handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, request_type = "exec", want_reply = WantReply, data = Data}, - #connection{channel_cache = Cache} = Connection, server) -> - <<?UINT32(Len), Command:Len/binary>> = Data, - - Channel = ssh_channel:cache_lookup(Cache, ChannelId), - - handle_cli_msg(Connection, Channel, + Connection, server) -> + <<?DEC_BIN(Command, _Len)>> = Data, + handle_cli_msg(Connection, ChannelId, {exec, ChannelId, WantReply, binary_to_list(Command)}); handle_msg(#ssh_msg_channel_request{request_type = "exec"}, Connection, client) -> %% The client SHOULD ignore exec requests. See RFC 4254 6.5. - {{replies, []}, Connection}; + {[], Connection}; handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, request_type = "env", want_reply = WantReply, data = Data}, - #connection{channel_cache = Cache} = Connection, server) -> - - <<?UINT32(VarLen), - Var:VarLen/binary, ?UINT32(ValueLen), Value:ValueLen/binary>> = Data, - - Channel = ssh_channel:cache_lookup(Cache, ChannelId), - - handle_cli_msg(Connection, Channel, + Connection, server) -> + <<?DEC_BIN(Var,_VarLen), ?DEC_BIN(Value,_ValLen)>> = Data, + handle_cli_msg(Connection, ChannelId, {env, ChannelId, WantReply, Var, Value}); handle_msg(#ssh_msg_channel_request{request_type = "env"}, Connection, client) -> %% The client SHOULD ignore env requests. - {{replies, []}, Connection}; + {[], Connection}; handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, request_type = _Other, want_reply = WantReply}, #connection{channel_cache = Cache} = Connection, _) -> if WantReply == true -> - case ssh_channel:cache_lookup(Cache, ChannelId) of + case ssh_client_channel:cache_lookup(Cache, ChannelId) of #channel{remote_id = RemoteId} -> FailMsg = channel_failure_msg(RemoteId), - {{replies, [{connection_reply, FailMsg}]}, - Connection}; + {[{connection_reply, FailMsg}], Connection}; undefined -> %% Chanel has been closed - {noreply, Connection} + {[], Connection} end; true -> - {noreply, Connection} + {[], Connection} end; handle_msg(#ssh_msg_global_request{name = _Type, @@ -656,79 +603,54 @@ handle_msg(#ssh_msg_global_request{name = _Type, data = _Data}, Connection, _) -> if WantReply == true -> FailMsg = request_failure_msg(), - {{replies, [{connection_reply, FailMsg}]}, - Connection}; + {[{connection_reply, FailMsg}], Connection}; true -> - {noreply, Connection} + {[], Connection} end; handle_msg(#ssh_msg_request_failure{}, #connection{requests = [{_, From} | Rest]} = Connection, _) -> - {{replies, [{channel_request_reply, From, {failure, <<>>}}]}, + {[{channel_request_reply, From, {failure, <<>>}}], Connection#connection{requests = Rest}}; + handle_msg(#ssh_msg_request_success{data = Data}, #connection{requests = [{_, From} | Rest]} = Connection, _) -> - {{replies, [{channel_request_reply, From, {success, Data}}]}, + {[{channel_request_reply, From, {success, Data}}], Connection#connection{requests = Rest}}; handle_msg(#ssh_msg_disconnect{code = Code, - description = Description, - language = _Lang }, - #connection{channel_cache = Cache} = Connection0, _) -> - {Connection, Replies} = - ssh_channel:cache_foldl(fun(Channel, {Connection1, Acc}) -> - {Reply, Connection2} = - reply_msg(Channel, - Connection1, - {closed, Channel#channel.local_id}), - {Connection2, [Reply | Acc]} - end, {Connection0, []}, Cache), - - ssh_channel:cache_delete(Cache), - {disconnect, {Code, Description}, {{replies, Replies}, Connection}}. - -handle_cli_msg(#connection{channel_cache = Cache} = Connection, - #channel{user = undefined, - remote_id = RemoteId, - local_id = ChannelId} = Channel0, Reply0) -> - case (catch start_cli(Connection, ChannelId)) of - {ok, Pid} -> - erlang:monitor(process, Pid), - Channel = Channel0#channel{user = Pid}, - ssh_channel:cache_update(Cache, Channel), - {Reply, Connection1} = reply_msg(Channel, Connection, Reply0), - {{replies, [Reply]}, Connection1}; - _Other -> - Reply = {connection_reply, - channel_failure_msg(RemoteId)}, - {{replies, [Reply]}, Connection} - end; - -handle_cli_msg(Connection0, Channel, Reply0) -> - {Reply, Connection} = reply_msg(Channel, Connection0, Reply0), - {{replies, [Reply]}, Connection}. + description = Description}, + Connection, _) -> + {disconnect, {Code, Description}, handle_stop(Connection)}. -channel_eof_msg(ChannelId) -> - #ssh_msg_channel_eof{recipient_channel = ChannelId}. - -channel_close_msg(ChannelId) -> - #ssh_msg_channel_close {recipient_channel = ChannelId}. - -channel_status_msg({success, ChannelId}) -> - channel_success_msg(ChannelId); -channel_status_msg({failure, ChannelId}) -> - channel_failure_msg(ChannelId). - -channel_success_msg(ChannelId) -> - #ssh_msg_channel_success{recipient_channel = ChannelId}. - -channel_failure_msg(ChannelId) -> - #ssh_msg_channel_failure{recipient_channel = ChannelId}. +%%%---------------------------------------------------------------- +%%% Returns pending responses to be delivered to the peer when a +%%% Channel/Connection closes +%%% +handle_stop(#connection{channel_cache = Cache} = Connection0) -> + {Connection, Replies} = + ssh_client_channel:cache_foldl( + fun(Channel, {Connection1, Acc}) -> + {Reply, Connection2} = + reply_msg(Channel, Connection1, + {closed, Channel#channel.local_id}), + {Connection2, Reply ++ Acc} + end, {Connection0, []}, Cache), + ssh_client_channel:cache_delete(Cache), + {Replies, Connection}. + +%%%---------------------------------------------------------------- +%%% channel_*_msg(...) +%%% Returns a #ssh_msg_....{} for channel operations. +%%% channel_adjust_window_msg(ChannelId, Bytes) -> #ssh_msg_channel_window_adjust{recipient_channel = ChannelId, bytes_to_add = Bytes}. +channel_close_msg(ChannelId) -> + #ssh_msg_channel_close {recipient_channel = ChannelId}. + channel_data_msg(ChannelId, 0, Data) -> #ssh_msg_channel_data{recipient_channel = ChannelId, data = Data}; @@ -737,6 +659,12 @@ channel_data_msg(ChannelId, Type, Data) -> data_type_code = Type, data = Data}. +channel_eof_msg(ChannelId) -> + #ssh_msg_channel_eof{recipient_channel = ChannelId}. + +channel_failure_msg(ChannelId) -> + #ssh_msg_channel_failure{recipient_channel = ChannelId}. + channel_open_msg(Type, ChannelId, WindowSize, MaxPacketSize, Data) -> #ssh_msg_channel_open{channel_type = Type, sender_channel = ChannelId, @@ -757,18 +685,34 @@ channel_open_failure_msg(RemoteId, Reason, Description, Lang) -> description = Description, lang = Lang}. +channel_status_msg({success, ChannelId}) -> + channel_success_msg(ChannelId); + +channel_status_msg({failure, ChannelId}) -> + channel_failure_msg(ChannelId). + channel_request_msg(ChannelId, Type, WantReply, Data) -> #ssh_msg_channel_request{recipient_channel = ChannelId, request_type = Type, want_reply = WantReply, data = Data}. +channel_success_msg(ChannelId) -> + #ssh_msg_channel_success{recipient_channel = ChannelId}. + +%%%---------------------------------------------------------------- +%%% request_*_msg(...) +%%% Returns a #ssh_msg_....{} for request responses. +%%% request_failure_msg() -> #ssh_msg_request_failure{}. request_success_msg(Data) -> #ssh_msg_request_success{data = Data}. +%%%---------------------------------------------------------------- +%%% +%%% bind(IP, Port, ChannelPid, Connection) -> Binds = [{{IP, Port}, ChannelPid} | lists:keydelete({IP, Port}, 1, @@ -808,6 +752,68 @@ encode_ip(Addr) when is_list(Addr) -> end end. +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%%% +%%% Internal functions +%%% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +%%%---------------------------------------------------------------- +%%% Create the channel data when an ssh_msg_open_channel message +%%% of "session" typ is handled +%%% +setup_session(#connection{channel_cache = Cache, + channel_id_seed = NewChannelID + } = C, + RemoteId, Type, WindowSize, PacketSize) -> + NextChannelID = NewChannelID + 1, + Channel = + #channel{type = Type, + sys = "ssh", + local_id = NewChannelID, + recv_window_size = ?DEFAULT_WINDOW_SIZE, + recv_packet_size = ?DEFAULT_PACKET_SIZE, + send_window_size = WindowSize, + send_packet_size = PacketSize, + send_buf = queue:new(), + remote_id = RemoteId + }, + ssh_client_channel:cache_update(Cache, Channel), + OpenConfMsg = channel_open_confirmation_msg(RemoteId, NewChannelID, + ?DEFAULT_WINDOW_SIZE, + ?DEFAULT_PACKET_SIZE), + Reply = {connection_reply, OpenConfMsg}, + {[Reply], C#connection{channel_id_seed = NextChannelID}}. + + +%%%---------------------------------------------------------------- +%%% Start a cli or subsystem +%%% +start_cli(#connection{options = Options, + cli_spec = CliSpec, + exec = Exec, + sub_system_supervisor = SubSysSup}, ChannelId) -> + case CliSpec of + no_cli -> + {error, cli_disabled}; + {CbModule, Args} -> + start_channel(CbModule, ChannelId, Args, SubSysSup, Exec, Options) + end. + + +start_subsystem(BinName, #connection{options = Options, + sub_system_supervisor = SubSysSup}, + #channel{local_id = ChannelId}, _ReplyMsg) -> + Name = binary_to_list(BinName), + case check_subsystem(Name, Options) of + {Callback, Opts} when is_atom(Callback), Callback =/= none -> + start_channel(Callback, ChannelId, Opts, SubSysSup, Options); + {Other, _} when Other =/= none -> + {error, legacy_option_not_supported} + end. + + +%%% Helpers for starting cli/subsystems start_channel(Cb, Id, Args, SubSysSup, Opts) -> start_channel(Cb, Id, Args, SubSysSup, undefined, Opts). @@ -815,45 +821,23 @@ start_channel(Cb, Id, Args, SubSysSup, Exec, Opts) -> ChannelSup = ssh_subsystem_sup:channel_supervisor(SubSysSup), case max_num_channels_not_exceeded(ChannelSup, Opts) of true -> - ssh_channel_sup:start_child(ChannelSup, Cb, Id, Args, Exec); + case ssh_server_channel_sup:start_child(ChannelSup, Cb, Id, Args, Exec) of + {error,{Error,_Info}} -> + throw(Error); + Others -> + Others + end; false -> throw(max_num_channels_exceeded) end. max_num_channels_not_exceeded(ChannelSup, Opts) -> MaxNumChannels = ?GET_OPT(max_channels, Opts), - NumChannels = length([x || {_,_,worker,[ssh_channel]} <- + NumChannels = length([x || {_,_,worker,[ssh_server_channel]} <- supervisor:which_children(ChannelSup)]), %% Note that NumChannels is BEFORE starting a new one NumChannels < MaxNumChannels. -%%-------------------------------------------------------------------- -%%% Internal functions -%%-------------------------------------------------------------------- -setup_session(#connection{channel_cache = Cache - } = Connection0, - RemoteId, - Type, WindowSize, PacketSize) -> - {ChannelId, Connection} = new_channel_id(Connection0), - - Channel = #channel{type = Type, - sys = "ssh", - local_id = ChannelId, - recv_window_size = ?DEFAULT_WINDOW_SIZE, - recv_packet_size = ?DEFAULT_PACKET_SIZE, - send_window_size = WindowSize, - send_packet_size = PacketSize, - send_buf = queue:new(), - remote_id = RemoteId - }, - ssh_channel:cache_update(Cache, Channel), - OpenConfMsg = channel_open_confirmation_msg(RemoteId, ChannelId, - ?DEFAULT_WINDOW_SIZE, - ?DEFAULT_PACKET_SIZE), - - {{replies, [{connection_reply, OpenConfMsg}]}, Connection}. - - check_subsystem("sftp"= SsName, Options) -> case ?GET_OPT(subsystems, Options) of no_subsys -> % FIXME: Can 'no_subsys' ever be matched? @@ -872,64 +856,10 @@ check_subsystem(SsName, Options) -> Value end. -start_cli(#connection{cli_spec = no_cli}, _) -> - {error, cli_disabled}; -start_cli(#connection{options = Options, - cli_spec = {CbModule, Args}, - exec = Exec, - sub_system_supervisor = SubSysSup}, ChannelId) -> - start_channel(CbModule, ChannelId, Args, SubSysSup, Exec, Options). - -start_subsystem(BinName, #connection{options = Options, - sub_system_supervisor = SubSysSup}, - #channel{local_id = ChannelId}, _ReplyMsg) -> - Name = binary_to_list(BinName), - case check_subsystem(Name, Options) of - {Callback, Opts} when is_atom(Callback), Callback =/= none -> - start_channel(Callback, ChannelId, Opts, SubSysSup, Options); - {Other, _} when Other =/= none -> - {error, legacy_option_not_supported} - end. - -channel_data_reply(_, #channel{local_id = ChannelId} = Channel, - Connection0, DataType, Data) -> - {Reply, Connection} = - reply_msg(Channel, Connection0, {data, ChannelId, DataType, Data}), - {[Reply], Connection}. - -new_channel_id(Connection) -> - ID = Connection#connection.channel_id_seed, - {ID, Connection#connection{channel_id_seed = ID + 1}}. - -reply_msg(Channel, Connection, {open, _} = Reply) -> - request_reply_or_data(Channel, Connection, Reply); -reply_msg(Channel, Connection, {open_error, _, _, _} = Reply) -> - request_reply_or_data(Channel, Connection, Reply); -reply_msg(Channel, Connection, success = Reply) -> - request_reply_or_data(Channel, Connection, Reply); -reply_msg(Channel, Connection, failure = Reply) -> - request_reply_or_data(Channel, Connection, Reply); -reply_msg(Channel, Connection, {closed, _} = Reply) -> - request_reply_or_data(Channel, Connection, Reply); -reply_msg(undefined, Connection, _Reply) -> - {noreply, Connection}; -reply_msg(#channel{user = ChannelPid}, Connection, Reply) -> - {{channel_data, ChannelPid, Reply}, Connection}. - - -request_reply_or_data(#channel{local_id = ChannelId, user = ChannelPid}, - #connection{requests = Requests} = - Connection, Reply) -> - case lists:keysearch(ChannelId, 1, Requests) of - {value, {ChannelId, From}} -> - {{channel_request_reply, From, Reply}, - Connection#connection{requests = - lists:keydelete(ChannelId, 1, Requests)}}; - false when (Reply == success) or (Reply == failure) -> - {[], Connection}; - false -> - {{channel_data, ChannelPid, Reply}, Connection} - end. +%%%---------------------------------------------------------------- +%%% +%%% Send-window handling +%%% update_send_window(Channel, _, undefined, #connection{channel_cache = Cache}) -> @@ -942,7 +872,7 @@ update_send_window(#channel{send_buf = SendBuffer} = Channel, DataType, Data, do_update_send_window(Channel0, Cache) -> {SendMsgs, Channel} = get_window(Channel0, []), - ssh_channel:cache_update(Cache, Channel), + ssh_client_channel:cache_update(Cache, Channel), {SendMsgs, Channel}. get_window(#channel{send_window_size = 0 @@ -984,17 +914,22 @@ handle_send_window({Type, Data}, _, PacketSize, WindowSize, Acc) -> <<Msg1:PacketSize/binary, Msg2/binary>> = Data, {WindowSize - PacketSize, [{Type, Msg1} | Acc], {Type, Msg2}}. +%%%---------------------------------------------------------------- +%%% +%%% Flow control +%%% + flow_control(Channel, Cache) -> flow_control([window_adjusted], Channel, Cache). flow_control([], Channel, Cache) -> - ssh_channel:cache_update(Cache, Channel), + ssh_client_channel:cache_update(Cache, Channel), []; flow_control([_|_], #channel{flow_control = From, send_buf = Buffer} = Channel, Cache) when From =/= undefined -> case queue:is_empty(Buffer) of true -> - ssh_channel:cache_update(Cache, Channel#channel{flow_control = undefined}), + ssh_client_channel:cache_update(Cache, Channel#channel{flow_control = undefined}), [{flow_control, Cache, Channel, From, ok}]; false -> [] @@ -1002,6 +937,11 @@ flow_control([_|_], #channel{flow_control = From, flow_control(_,_,_) -> []. +%%%---------------------------------------------------------------- +%%% +%%% Pseudo terminal stuff +%%% + pty_req(ConnectionHandler, Channel, Term, Width, Height, PixWidth, PixHeight, PtyOpts, TimeOut) -> ssh_connection_handler:request(ConnectionHandler, @@ -1027,8 +967,7 @@ pty_default_dimensions(Dimension, TermData) -> encode_pty_opts(Opts) -> Bin = list_to_binary(encode_pty_opts2(Opts)), - Len = size(Bin), - <<?UINT32(Len), Bin/binary>>. + <<?STRING(Bin)>>. encode_pty_opts2([]) -> [?TTY_OP_END]; @@ -1147,7 +1086,7 @@ decode_pty_opts(<<>>) -> []; decode_pty_opts(<<0, 0, 0, 0>>) -> []; -decode_pty_opts(<<?UINT32(Len), Modes:Len/binary>>) -> +decode_pty_opts(<<?DEC_BIN(Modes,_Len)>>) -> decode_pty_opts2(Modes); decode_pty_opts(Binary) -> decode_pty_opts2(Binary). @@ -1224,3 +1163,104 @@ backwards_compatible([{pixel_hight, Value} | Rest], Acc) -> backwards_compatible(Rest, [{height, Value} | Acc]); backwards_compatible([Value| Rest], Acc) -> backwards_compatible(Rest, [ Value | Acc]). + + +%%%---------------------------------------------------------------- +%%% +%%% Common part of handling channel messages meant for a cli (like "env", "exec" etc) +%%% Called at the finnish of handle_msg(#ssh_msg_channel_request,...) +%%% + +handle_cli_msg(C0, ChId, Reply0) -> + Cache = C0#connection.channel_cache, + Ch0 = ssh_client_channel:cache_lookup(Cache, ChId), + case Ch0#channel.user of + undefined -> + case (catch start_cli(C0, ChId)) of + {ok, Pid} -> + erlang:monitor(process, Pid), + Ch = Ch0#channel{user = Pid}, + ssh_client_channel:cache_update(Cache, Ch), + reply_msg(Ch, C0, Reply0); + _Other -> + Reply = {connection_reply, channel_failure_msg(Ch0#channel.remote_id)}, + {[Reply], C0} + end; + + _ -> + reply_msg(Ch0, C0, Reply0) + end. + +%%%---------------------------------------------------------------- +%%% +%%% Request response handling on return to the calling ssh_connection_handler +%%% state machine. +%%% + +channel_data_reply_msg(ChannelId, Connection, DataType, Data) -> + case ssh_client_channel:cache_lookup(Connection#connection.channel_cache, ChannelId) of + #channel{recv_window_size = Size} = Channel -> + WantedSize = Size - size(Data), + ssh_client_channel:cache_update(Connection#connection.channel_cache, + Channel#channel{recv_window_size = WantedSize}), + reply_msg(Channel, Connection, {data, ChannelId, DataType, Data}); + undefined -> + {[], Connection} + end. + + +reply_msg(ChId, C, Reply) when is_integer(ChId) -> + reply_msg(ssh_client_channel:cache_lookup(C#connection.channel_cache, ChId), C, Reply); + +reply_msg(Channel, Connection, {open, _} = Reply) -> + request_reply_or_data(Channel, Connection, Reply); +reply_msg(Channel, Connection, {open_error, _, _, _} = Reply) -> + request_reply_or_data(Channel, Connection, Reply); +reply_msg(Channel, Connection, success = Reply) -> + request_reply_or_data(Channel, Connection, Reply); +reply_msg(Channel, Connection, failure = Reply) -> + request_reply_or_data(Channel, Connection, Reply); +reply_msg(Channel, Connection, {closed, _} = Reply) -> + request_reply_or_data(Channel, Connection, Reply); +reply_msg(undefined, Connection, _Reply) -> + {[], Connection}; +reply_msg(#channel{user = ChannelPid}, Connection, Reply) -> + {[{channel_data, ChannelPid, Reply}], Connection}. + + +request_reply_or_data(#channel{local_id = ChannelId, user = ChannelPid}, + #connection{requests = Requests} = + Connection, Reply) -> + case lists:keysearch(ChannelId, 1, Requests) of + {value, {ChannelId, From}} -> + {[{channel_request_reply, From, Reply}], + Connection#connection{requests = + lists:keydelete(ChannelId, 1, Requests)}}; + false when (Reply == success) or (Reply == failure) -> + {[], Connection}; + false -> + {[{channel_data, ChannelPid, Reply}], Connection} + end. + + + +%%%---------------------------------------------------------------- +%%% l(ist)2b(inary) +%%% +l2b(L) when is_integer(hd(L)) -> + try list_to_binary(L) + of + B -> B + catch + _:_ -> + unicode:characters_to_binary(L) + end; +l2b([H|T]) -> + << (l2b(H))/binary, (l2b(T))/binary >>; +l2b(B) when is_binary(B) -> + B; +l2b([]) -> + <<>>. + + + diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl index e11d3adee4..8f32966a12 100644 --- a/lib/ssh/src/ssh_connection_handler.erl +++ b/lib/ssh/src/ssh_connection_handler.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -56,10 +56,13 @@ connection_info/2, channel_info/3, adjust_window/3, close/2, - disconnect/1, disconnect/2, + disconnect/4, get_print_info/1 ]). +-type connection_ref() :: ssh:connection_ref(). +-type channel_id() :: ssh:channel_id(). + %%% Behaviour callbacks -export([init/1, callback_mode/0, handle_event/4, terminate/3, format_status/2, code_change/4]). @@ -68,16 +71,28 @@ -export([init_connection_handler/3, % proc_lib:spawn needs this init_ssh_record/3, % Export of this internal function % intended for low-level protocol test suites - renegotiate/1, renegotiate_data/1 % Export intended for test cases + renegotiate/1, alg/1 % Export intended for test cases ]). +-export([dbg_trace/3]). + + +-define(send_disconnect(Code, DetailedText, StateName, State), + send_disconnect(Code, DetailedText, ?MODULE, ?LINE, StateName, State)). + +-define(send_disconnect(Code, Reason, DetailedText, StateName, State), + send_disconnect(Code, Reason, DetailedText, ?MODULE, ?LINE, StateName, State)). + +-define(call_disconnectfun_and_log_cond(LogMsg, DetailedText, StateName, D), + call_disconnectfun_and_log_cond(LogMsg, DetailedText, ?MODULE, ?LINE, StateName, D)). + %%==================================================================== %% Start / stop %%==================================================================== %%-------------------------------------------------------------------- -spec start_link(role(), - inet:socket(), - ssh_options:options() + gen_tcp:socket(), + internal_options() ) -> {ok, pid()}. %% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . start_link(Role, Socket, Options) -> @@ -106,8 +121,8 @@ stop(ConnectionHandler)-> %%-------------------------------------------------------------------- -spec start_connection(role(), - inet:socket(), - ssh_options:options(), + gen_tcp:socket(), + internal_options(), timeout() ) -> {ok, connection_ref()} | {error, term()}. %% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . @@ -149,17 +164,16 @@ start_connection(server = Role, Socket, Options, Timeout) -> %%-------------------------------------------------------------------- %%% Some other module has decided to disconnect. --spec disconnect(#ssh_msg_disconnect{}) -> no_return(). --spec disconnect(#ssh_msg_disconnect{}, iodata()) -> no_return(). + +-spec disconnect(Code::integer(), Details::iodata(), + Module::atom(), Line::integer()) -> no_return(). %% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -disconnect(Msg = #ssh_msg_disconnect{}) -> - throw({keep_state_and_data, - [{next_event, internal, {disconnect, Msg, Msg#ssh_msg_disconnect.description}}]}). -disconnect(Msg = #ssh_msg_disconnect{}, ExtraInfo) -> - throw({keep_state_and_data, - [{next_event, internal, {disconnect, Msg, {Msg#ssh_msg_disconnect.description,ExtraInfo}}}]}). +% Preferable called with the macro ?DISCONNECT +disconnect(Code, DetailedText, Module, Line) -> + throw({keep_state_and_data, + [{next_event, internal, {send_disconnect, Code, DetailedText, Module, Line}}]}). %%-------------------------------------------------------------------- -spec open_channel(connection_ref(), @@ -311,15 +325,11 @@ close(ConnectionHandler, ChannelId) -> ) -> ok. %% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . renegotiate(ConnectionHandler) -> - cast(ConnectionHandler, renegotiate). + cast(ConnectionHandler, force_renegotiate). %%-------------------------------------------------------------------- --spec renegotiate_data(connection_ref() - ) -> ok. -%% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -renegotiate_data(ConnectionHandler) -> - cast(ConnectionHandler, data_size). - +alg(ConnectionHandler) -> + call(ConnectionHandler, get_alg). %%==================================================================== %% Internal process state @@ -332,11 +342,6 @@ renegotiate_data(ConnectionHandler) -> connection_state :: #connection{}, latest_channel_id = 0 :: non_neg_integer() | undefined, - idle_timer_ref :: undefined - | infinity - | reference(), - idle_timer_value = infinity :: infinity - | pos_integer(), transport_protocol :: atom() | undefined, % ex: tcp transport_cb :: atom() @@ -345,18 +350,19 @@ renegotiate_data(ConnectionHandler) -> | undefined, % ex: tcp_closed ssh_params :: #ssh{} | undefined, - socket :: inet:socket() + socket :: gen_tcp:socket() | undefined, decrypted_data_buffer = <<>> :: binary() | undefined, encrypted_data_buffer = <<>> :: binary() | undefined, + aead_data = <<>> :: binary() + | undefined, undecrypted_packet_length :: undefined | non_neg_integer(), key_exchange_init_msg :: #ssh_msg_kexinit{} | undefined, last_size_rekey = 0 :: non_neg_integer(), event_queue = [] :: list(), -% opts :: ssh_options:options(), inet_initial_recbuf_size :: pos_integer() | undefined }). @@ -366,8 +372,8 @@ renegotiate_data(ConnectionHandler) -> %%==================================================================== %%-------------------------------------------------------------------- -spec init_connection_handler(role(), - inet:socket(), - ssh_options:options() + gen_tcp:socket(), + internal_options() ) -> no_return(). %% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . init_connection_handler(Role, Socket, Opts) -> @@ -398,7 +404,7 @@ init([Role,Socket,Opts]) -> case inet:peername(Socket) of {ok, PeerAddr} -> {Protocol, Callback, CloseTag} = ?GET_OPT(transport, Opts), - C = #connection{channel_cache = ssh_channel:cache_create(), + C = #connection{channel_cache = ssh_client_channel:cache_create(), channel_id_seed = 0, port_bindings = [], requests = [], @@ -413,20 +419,16 @@ init([Role,Socket,Opts]) -> }, D = case Role of client -> - %% Start the renegotiation timers - timer:apply_after(?REKEY_TIMOUT, gen_statem, cast, [self(), renegotiate]), - timer:apply_after(?REKEY_DATA_TIMOUT, gen_statem, cast, [self(), data_size]), - cache_init_idle_timer(D0); + D0; server -> Sups = ?GET_INTERNAL_OPT(supervisors, Opts), - cache_init_idle_timer( - D0#data{connection_state = - C#connection{cli_spec = ?GET_OPT(ssh_cli, Opts, {ssh_cli,[?GET_OPT(shell, Opts)]}), - exec = ?GET_OPT(exec, Opts), - system_supervisor = proplists:get_value(system_sup, Sups), - sub_system_supervisor = proplists:get_value(subsystem_sup, Sups), - connection_supervisor = proplists:get_value(connection_sup, Sups) - }}) + D0#data{connection_state = + C#connection{cli_spec = ?GET_OPT(ssh_cli, Opts, {ssh_cli,[?GET_OPT(shell, Opts)]}), + exec = ?GET_OPT(exec, Opts), + system_supervisor = proplists:get_value(system_sup, Sups), + sub_system_supervisor = proplists:get_value(subsystem_sup, Sups), + connection_supervisor = proplists:get_value(connection_sup, Sups) + }} end, {ok, {hello,Role}, D}; @@ -442,10 +444,9 @@ init_ssh_record(Role, Socket, Opts) -> {ok,PeerAddr} = inet:peername(Socket), init_ssh_record(Role, Socket, PeerAddr, Opts). -init_ssh_record(Role, _Socket, PeerAddr, Opts) -> +init_ssh_record(Role, Socket, PeerAddr, Opts) -> AuthMethods = ?GET_OPT(auth_methods, Opts), S0 = #ssh{role = Role, - key_cb = ?GET_OPT(key_cb, Opts), opts = Opts, userauth_supported_methods = AuthMethods, available_host_keys = available_hkey_algorithms(Role, Opts), @@ -453,6 +454,10 @@ init_ssh_record(Role, _Socket, PeerAddr, Opts) -> }, {Vsn, Version} = ssh_transport:versions(Role, Opts), + LocalName = case inet:sockname(Socket) of + {ok,Local} -> Local; + _ -> undefined + end, case Role of client -> PeerName = case ?GET_INTERNAL_OPT(host, Opts) of @@ -466,12 +471,14 @@ init_ssh_record(Role, _Socket, PeerAddr, Opts) -> S1 = S0#ssh{c_vsn = Vsn, c_version = Version, - io_cb = case ?GET_OPT(user_interaction, Opts) of - true -> ssh_io; - false -> ssh_no_io - end, + opts = ?PUT_INTERNAL_OPT({io_cb, case ?GET_OPT(user_interaction, Opts) of + true -> ssh_io; + false -> ssh_no_io + end}, + Opts), userauth_quiet_mode = ?GET_OPT(quiet_mode, Opts), - peer = {PeerName, PeerAddr} + peer = {PeerName, PeerAddr}, + local = LocalName }, S1#ssh{userauth_pubkeys = [K || K <- ?GET_OPT(pref_public_key_algs, Opts), is_usable_user_pubkey(K, S1) @@ -481,10 +488,10 @@ init_ssh_record(Role, _Socket, PeerAddr, Opts) -> server -> S0#ssh{s_vsn = Vsn, s_version = Version, - io_cb = ?GET_INTERNAL_OPT(io_cb, Opts, ssh_io), userauth_methods = string:tokens(AuthMethods, ","), kb_tries_left = 3, - peer = {undefined, PeerAddr} + peer = {undefined, PeerAddr}, + local = LocalName } end. @@ -522,7 +529,7 @@ role({_,Role}) -> Role; role({_,Role,_}) -> Role. -spec renegotiation(state_name()) -> boolean(). -renegotiation({_,_,ReNeg}) -> ReNeg == renegotiation; +renegotiation({_,_,ReNeg}) -> ReNeg == renegotiate; renegotiation(_) -> false. @@ -536,13 +543,18 @@ renegotiation(_) -> false. #data{} ) -> gen_statem:event_handler_result(state_name()) . +-define(CONNECTION_MSG(Msg), + [{next_event, internal, prepare_next_packet}, + {next_event,internal,{conn_msg,Msg}}]). + %% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . callback_mode() -> - handle_event_function. + [handle_event_function, + state_enter]. -handle_event(_, _Event, {init_error,Error}, _) -> +handle_event(_, _Event, {init_error,Error}=StateName, D) -> case Error of enotconn -> %% Handles the abnormal sequence: @@ -550,6 +562,9 @@ handle_event(_, _Event, {init_error,Error}, _) -> %% <-SYNACK %% ACK-> %% RST-> + ?call_disconnectfun_and_log_cond("Protocol Error", + "TCP connenction to server was prematurely closed by the client", + StateName, D), {stop, {shutdown,"TCP connenction to server was prematurely closed by the client"}}; OtherError -> @@ -558,7 +573,7 @@ handle_event(_, _Event, {init_error,Error}, _) -> %%% ######## {hello, client|server} #### %% The very first event that is sent when the we are set as controlling process of Socket -handle_event(_, socket_control, {hello,_}, D) -> +handle_event(_, socket_control, {hello,_}=StateName, D) -> VsnMsg = ssh_transport:hello_version_msg(string_version(D#data.ssh_params)), send_bytes(VsnMsg, D), case inet:getopts(Socket=D#data.socket, [recbuf]) of @@ -573,10 +588,13 @@ handle_event(_, socket_control, {hello,_}, D) -> {keep_state, D#data{inet_initial_recbuf_size=Size}}; Other -> + ?call_disconnectfun_and_log_cond("Option return", + io_lib:format("Unexpected getopts return:~n ~p",[Other]), + StateName, D), {stop, {shutdown,{unexpected_getopts_return, Other}}} end; -handle_event(_, {info_line,_Line}, {hello,Role}, D) -> +handle_event(_, {info_line,Line}, {hello,Role}=StateName, D) -> case Role of client -> %% The server may send info lines to the client before the version_exchange @@ -587,28 +605,33 @@ handle_event(_, {info_line,_Line}, {hello,Role}, D) -> %% But the client may NOT send them to the server. Openssh answers with cleartext, %% and so do we send_bytes("Protocol mismatch.", D), + Msg = io_lib:format("Protocol mismatch in version exchange. Client sent info lines.~n~s", + [ssh_dbg:hex_dump(Line, 64)]), + ?call_disconnectfun_and_log_cond("Protocol mismatch.", Msg, StateName, D), {stop, {shutdown,"Protocol mismatch in version exchange. Client sent info lines."}} end; -handle_event(_, {version_exchange,Version}, {hello,Role}, D) -> +handle_event(_, {version_exchange,Version}, {hello,Role}, D0) -> {NumVsn, StrVsn} = ssh_transport:handle_hello_version(Version), - case handle_version(NumVsn, StrVsn, D#data.ssh_params) of + case handle_version(NumVsn, StrVsn, D0#data.ssh_params) of {ok, Ssh1} -> %% Since the hello part is finnished correctly, we set the %% socket to the packet handling mode (including recbuf size): - inet:setopts(D#data.socket, [{packet,0}, + inet:setopts(D0#data.socket, [{packet,0}, {mode,binary}, {active, once}, - {recbuf, D#data.inet_initial_recbuf_size}]), + {recbuf, D0#data.inet_initial_recbuf_size}]), {KeyInitMsg, SshPacket, Ssh} = ssh_transport:key_exchange_init_msg(Ssh1), - send_bytes(SshPacket, D), - {next_state, {kexinit,Role,init}, D#data{ssh_params = Ssh, + send_bytes(SshPacket, D0), + {next_state, {kexinit,Role,init}, D0#data{ssh_params = Ssh, key_exchange_init_msg = KeyInitMsg}}; not_supported -> - disconnect( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED, - description = ["Protocol version ",StrVsn," not supported"]}, - {next_state, {hello,Role}, D}) + {Shutdown, D} = + ?send_disconnect(?SSH_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED, + io_lib:format("Offending version is ~p",[string:chomp(Version)]), + {hello,Role}, + D0), + {stop, Shutdown, D} end; @@ -754,18 +777,20 @@ handle_event(internal, Msg, {ext_info,Role,_ReNegFlag}, D) when is_tuple(Msg) -> %%% ######## {service_request, client|server} #### -handle_event(_, Msg = #ssh_msg_service_request{name=ServiceName}, StateName = {service_request,server}, D) -> +handle_event(_, Msg = #ssh_msg_service_request{name=ServiceName}, StateName = {service_request,server}, D0) -> case ServiceName of "ssh-userauth" -> - Ssh0 = #ssh{session_id=SessionId} = D#data.ssh_params, + Ssh0 = #ssh{session_id=SessionId} = D0#data.ssh_params, {ok, {Reply, Ssh}} = ssh_auth:handle_userauth_request(Msg, SessionId, Ssh0), - send_bytes(Reply, D), - {next_state, {userauth,server}, D#data{ssh_params = Ssh}}; + send_bytes(Reply, D0), + {next_state, {userauth,server}, D0#data{ssh_params = Ssh}}; _ -> - disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, - description = "Unknown service"}, - StateName, D) + {Shutdown, D} = + ?send_disconnect(?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, + io_lib:format("Unknown service: ~p",[ServiceName]), + StateName, D0), + {stop, Shutdown, D} end; handle_event(_, #ssh_msg_service_accept{name = "ssh-userauth"}, {service_request,client}, @@ -781,15 +806,15 @@ handle_event(_, #ssh_msg_service_accept{name = "ssh-userauth"}, {service_request handle_event(_, Msg = #ssh_msg_userauth_request{service = ServiceName, method = Method}, StateName = {userauth,server}, - D = #data{ssh_params=Ssh0}) -> + D0 = #data{ssh_params=Ssh0}) -> case {ServiceName, Ssh0#ssh.service, Method} of {"ssh-connection", "ssh-connection", "none"} -> %% Probably the very first userauth_request but we deny unauthorized login {not_authorized, _, {Reply,Ssh}} = ssh_auth:handle_userauth_request(Msg, Ssh0#ssh.session_id, Ssh0), - send_bytes(Reply, D), - {keep_state, D#data{ssh_params = Ssh}}; + send_bytes(Reply, D0), + {keep_state, D0#data{ssh_params = Ssh}}; {"ssh-connection", "ssh-connection", Method} -> %% Userauth request with a method like "password" or so @@ -798,20 +823,20 @@ handle_event(_, %% Yepp! we support this method case ssh_auth:handle_userauth_request(Msg, Ssh0#ssh.session_id, Ssh0) of {authorized, User, {Reply, Ssh}} -> - send_bytes(Reply, D), - D#data.starter ! ssh_connected, - connected_fun(User, Method, D), + send_bytes(Reply, D0), + D0#data.starter ! ssh_connected, + connected_fun(User, Method, D0), {next_state, {connected,server}, - D#data{auth_user = User, + D0#data{auth_user = User, ssh_params = Ssh#ssh{authenticated = true}}}; {not_authorized, {User, Reason}, {Reply, Ssh}} when Method == "keyboard-interactive" -> - retry_fun(User, Reason, D), - send_bytes(Reply, D), - {next_state, {userauth_keyboard_interactive,server}, D#data{ssh_params = Ssh}}; + retry_fun(User, Reason, D0), + send_bytes(Reply, D0), + {next_state, {userauth_keyboard_interactive,server}, D0#data{ssh_params = Ssh}}; {not_authorized, {User, Reason}, {Reply, Ssh}} -> - retry_fun(User, Reason, D), - send_bytes(Reply, D), - {keep_state, D#data{ssh_params = Ssh}} + retry_fun(User, Reason, D0), + send_bytes(Reply, D0), + {keep_state, D0#data{ssh_params = Ssh}} end; false -> %% No we do not support this method (=/= none) @@ -825,9 +850,11 @@ handle_event(_, %% {ServiceName, Expected, Method} when Expected =/= ServiceName -> Do what? {ServiceName, _, _} when ServiceName =/= "ssh-connection" -> - disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, - description = "Unknown service"}, - StateName, D) + {Shutdown, D} = + ?send_disconnect(?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, + io_lib:format("Unknown service: ~p",[ServiceName]), + StateName, D0), + {stop, Shutdown, D} end; %%---- userauth success to client @@ -843,14 +870,14 @@ handle_event(_, #ssh_msg_userauth_success{}, {userauth,client}, D=#data{ssh_para %%---- userauth failure response to client handle_event(_, #ssh_msg_userauth_failure{}, {userauth,client}=StateName, - D = #data{ssh_params = #ssh{userauth_methods = []}}) -> - Msg = #ssh_msg_disconnect{code = ?SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE, - description = "Unable to connect using the available" - " authentication methods"}, - disconnect(Msg, StateName, D); - + #data{ssh_params = #ssh{userauth_methods = []}} = D0) -> + {Shutdown, D} = + ?send_disconnect(?SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE, + io_lib:format("User auth failed for: ~p",[D0#data.auth_user]), + StateName, D0), + {stop, Shutdown, D}; handle_event(_, #ssh_msg_userauth_failure{authentications = Methods}, StateName={userauth,client}, - D = #data{ssh_params = Ssh0}) -> + D0 = #data{ssh_params = Ssh0}) -> %% The prefered authentication method failed try next method Ssh1 = case Ssh0#ssh.userauth_methods of none -> @@ -861,15 +888,18 @@ handle_event(_, #ssh_msg_userauth_failure{authentications = Methods}, StateName= Ssh0 end, case ssh_auth:userauth_request_msg(Ssh1) of - {disconnect, DisconnectMsg, {Msg, Ssh}} -> - send_bytes(Msg, D), - disconnect(DisconnectMsg, StateName, D#data{ssh_params = Ssh}); + {send_disconnect, Code, Ssh} -> + {Shutdown, D} = + ?send_disconnect(Code, + io_lib:format("User auth failed for: ~p",[D0#data.auth_user]), + StateName, D0#data{ssh_params = Ssh}), + {stop, Shutdown, D}; {"keyboard-interactive", {Msg, Ssh}} -> - send_bytes(Msg, D), - {next_state, {userauth_keyboard_interactive,client}, D#data{ssh_params = Ssh}}; + send_bytes(Msg, D0), + {next_state, {userauth_keyboard_interactive,client}, D0#data{ssh_params = Ssh}}; {_Method, {Msg, Ssh}} -> - send_bytes(Msg, D), - {keep_state, D#data{ssh_params = Ssh}} + send_bytes(Msg, D0), + {keep_state, D0#data{ssh_params = Ssh}} end; %%---- banner to client @@ -952,6 +982,10 @@ handle_event(_, #ssh_msg_userauth_info_request{}, {userauth_keyboard_interactive %%% ######## {connected, client|server} #### +%% Skip ext_info messages in connected state (for example from OpenSSH >= 7.7) +handle_event(_, #ssh_msg_ext_info{}, {connected,_Role}, D) -> + {keep_state, D}; + handle_event(_, {#ssh_msg_kexinit{},_}, {connected,Role}, D0) -> {KeyInitMsg, SshPacket, Ssh} = ssh_transport:key_exchange_init_msg(D0#data.ssh_params), D = D0#data{ssh_params = Ssh, @@ -960,10 +994,10 @@ handle_event(_, {#ssh_msg_kexinit{},_}, {connected,Role}, D0) -> {next_state, {kexinit,Role,renegotiate}, D, [postpone]}; handle_event(_, #ssh_msg_disconnect{description=Desc} = Msg, StateName, D0) -> - {disconnect, _, {{replies,Replies}, _}} = + {disconnect, _, RepliesCon} = ssh_connection:handle_msg(Msg, D0#data.connection_state, role(StateName)), - {Actions,D} = send_replies(Replies, D0), - disconnect_fun(Desc, D), + {Actions,D} = send_replies(RepliesCon, D0), + disconnect_fun("Received disconnect: "++Desc, D), {stop_and_reply, {shutdown,Desc}, Actions, D}; handle_event(_, #ssh_msg_ignore{}, _, _) -> @@ -976,102 +1010,103 @@ handle_event(_, #ssh_msg_debug{} = Msg, _, D) -> debug_fun(Msg, D), keep_state_and_data; -handle_event(internal, Msg=#ssh_msg_global_request{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_request_success{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_request_failure{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_channel_open{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_channel_open_confirmation{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_channel_open_failure{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_channel_window_adjust{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_channel_data{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_channel_extended_data{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_channel_eof{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_channel_close{}, {connected,server} = StateName, D) -> - handle_connection_msg(Msg, StateName, cache_request_idle_timer_check(D)); - -handle_event(internal, Msg=#ssh_msg_channel_close{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_channel_request{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_channel_success{}, StateName, D) -> - update_inet_buffers(D#data.socket), - handle_connection_msg(Msg, StateName, D); - -handle_event(internal, Msg=#ssh_msg_channel_failure{}, StateName, D) -> - handle_connection_msg(Msg, StateName, D); - +handle_event(internal, {conn_msg,Msg}, StateName, #data{starter = User, + connection_state = Connection0, + event_queue = Qev0} = D0) -> + Role = role(StateName), + Rengotation = renegotiation(StateName), + try ssh_connection:handle_msg(Msg, Connection0, Role) of + {disconnect, Reason0, RepliesConn} -> + {Repls, D} = send_replies(RepliesConn, D0), + case {Reason0,Role} of + {{_, Reason}, client} when ((StateName =/= {connected,client}) + and (not Rengotation)) -> + User ! {self(), not_connected, Reason}; + _ -> + ok + end, + {stop_and_reply, {shutdown,normal}, Repls, D}; -handle_event(cast, renegotiate, {connected,Role}, D) -> - {KeyInitMsg, SshPacket, Ssh} = ssh_transport:key_exchange_init_msg(D#data.ssh_params), - send_bytes(SshPacket, D), - timer:apply_after(?REKEY_TIMOUT, gen_statem, cast, [self(), renegotiate]), - {next_state, {kexinit,Role,renegotiate}, D#data{ssh_params = Ssh, - key_exchange_init_msg = KeyInitMsg}}; + {Replies, Connection} when is_list(Replies) -> + {Repls, D} = + case StateName of + {connected,_} -> + send_replies(Replies, D0#data{connection_state=Connection}); + _ -> + {ConnReplies, NonConnReplies} = lists:splitwith(fun not_connected_filter/1, Replies), + send_replies(NonConnReplies, D0#data{event_queue = Qev0 ++ ConnReplies}) + end, + case {Msg, StateName} of + {#ssh_msg_channel_close{}, {connected,_}} -> + {keep_state, D, [cond_set_idle_timer(D)|Repls]}; + {#ssh_msg_channel_success{}, _} -> + update_inet_buffers(D#data.socket), + {keep_state, D, Repls}; + _ -> + {keep_state, D, Repls} + end -handle_event(cast, renegotiate, _, _) -> - %% Already in key-exchange so safe to ignore - timer:apply_after(?REKEY_TIMOUT, gen_statem, cast, [self(), renegotiate]), % FIXME: not here in original - keep_state_and_data; + catch + Class:Error -> + {Repls, D1} = send_replies(ssh_connection:handle_stop(Connection0), D0), + {Shutdown, D} = ?send_disconnect(?SSH_DISCONNECT_BY_APPLICATION, + io_lib:format("Internal error: ~p:~p",[Class,Error]), + StateName, D1), + {stop_and_reply, Shutdown, Repls, D} + end; -%% Rekey due to sent data limit reached? -handle_event(cast, data_size, {connected,Role}, D) -> - {ok, [{send_oct,Sent0}]} = inet:getstat(D#data.socket, [send_oct]), - Sent = Sent0 - D#data.last_size_rekey, - MaxSent = ?GET_OPT(rekey_limit, (D#data.ssh_params)#ssh.opts), - timer:apply_after(?REKEY_DATA_TIMOUT, gen_statem, cast, [self(), data_size]), - case Sent >= MaxSent of - true -> - {KeyInitMsg, SshPacket, Ssh} = - ssh_transport:key_exchange_init_msg(D#data.ssh_params), - send_bytes(SshPacket, D), - {next_state, {kexinit,Role,renegotiate}, D#data{ssh_params = Ssh, - key_exchange_init_msg = KeyInitMsg, - last_size_rekey = Sent0}}; - _ -> - keep_state_and_data +handle_event(enter, _OldState, {connected,_}=State, D) -> + %% Entering the state where re-negotiation is possible + init_renegotiate_timers(State, D); + +handle_event(enter, _OldState, {ext_info,_,renegotiate}=State, D) -> + %% Could be hanging in exit_info state if nothing else arrives + init_renegotiate_timers(State, D); + +handle_event(enter, {connected,_}, State, D) -> + %% Exiting the state where re-negotiation is possible + pause_renegotiate_timers(State, D); + +handle_event(cast, force_renegotiate, StateName, D) -> + handle_event({timeout,renegotiate}, undefined, StateName, D); + +handle_event({timeout,renegotiate}, _, StateName, D0) -> + case StateName of + {connected,Role} -> + start_rekeying(Role, D0); + {ext_info,Role,renegotiate} -> + start_rekeying(Role, D0); + _ -> + %% Wrong state for starting a renegotiation, must be in re-negotiation + keep_state_and_data end; -handle_event(cast, data_size, _, _) -> - %% Already in key-exchange so safe to ignore - timer:apply_after(?REKEY_DATA_TIMOUT, gen_statem, cast, [self(), data_size]), % FIXME: not here in original - keep_state_and_data; - +handle_event({timeout,check_data_size}, _, StateName, D0) -> + %% Rekey due to sent data limit reached? (Can't be in {ext_info,...} if data is sent) + case StateName of + {connected,Role} -> + check_data_rekeying(Role, D0); + _ -> + %% Wrong state for starting a renegotiation, must be in re-negotiation + keep_state_and_data + end; +handle_event({call,From}, get_alg, _, D) -> + #ssh{algorithms=Algs} = D#data.ssh_params, + {keep_state_and_data, [{reply,From,Algs}]}; handle_event(cast, _, StateName, _) when not ?CONNECTED(StateName) -> {keep_state_and_data, [postpone]}; handle_event(cast, {adjust_window,ChannelId,Bytes}, StateName, D) when ?CONNECTED(StateName) -> - case ssh_channel:cache_lookup(cache(D), ChannelId) of + case ssh_client_channel:cache_lookup(cache(D), ChannelId) of #channel{recv_window_size = WinSize, recv_window_pending = Pending, recv_packet_size = PktSize} = Channel when (WinSize-Bytes) >= 2*PktSize -> %% The peer can send at least two more *full* packet, no hurry. - ssh_channel:cache_update(cache(D), + ssh_client_channel:cache_update(cache(D), Channel#channel{recv_window_pending = Pending + Bytes}), keep_state_and_data; @@ -1079,7 +1114,7 @@ handle_event(cast, {adjust_window,ChannelId,Bytes}, StateName, D) when ?CONNECTE recv_window_pending = Pending, remote_id = Id} = Channel -> %% Now we have to update the window - we can't receive so many more pkts - ssh_channel:cache_update(cache(D), + ssh_client_channel:cache_update(cache(D), Channel#channel{recv_window_size = WinSize + Bytes + Pending, recv_window_pending = 0}), @@ -1091,7 +1126,7 @@ handle_event(cast, {adjust_window,ChannelId,Bytes}, StateName, D) when ?CONNECTE end; handle_event(cast, {reply_request,success,ChannelId}, StateName, D) when ?CONNECTED(StateName) -> - case ssh_channel:cache_lookup(cache(D), ChannelId) of + case ssh_client_channel:cache_lookup(cache(D), ChannelId) of #channel{remote_id = RemoteId} -> Msg = ssh_connection:channel_success_msg(RemoteId), update_inet_buffers(D#data.socket), @@ -1134,7 +1169,7 @@ handle_event({call,From}, {connection_info, Options}, _, D) -> {keep_state_and_data, [{reply,From,Info}]}; handle_event({call,From}, {channel_info,ChannelId,Options}, _, D) -> - case ssh_channel:cache_lookup(cache(D), ChannelId) of + case ssh_client_channel:cache_lookup(cache(D), ChannelId) of #channel{} = Channel -> Info = fold_keys(Options, fun chann_info/2, Channel), {keep_state_and_data, [{reply,From,Info}]}; @@ -1144,14 +1179,14 @@ handle_event({call,From}, {channel_info,ChannelId,Options}, _, D) -> handle_event({call,From}, {info, all}, _, D) -> - Result = ssh_channel:cache_foldl(fun(Channel, Acc) -> + Result = ssh_client_channel:cache_foldl(fun(Channel, Acc) -> [Channel | Acc] end, [], cache(D)), {keep_state_and_data, [{reply, From, {ok,Result}}]}; handle_event({call,From}, {info, ChannelPid}, _, D) -> - Result = ssh_channel:cache_foldl( + Result = ssh_client_channel:cache_foldl( fun(Channel, Acc) when Channel#channel.user == ChannelPid -> [Channel | Acc]; (_, Acc) -> @@ -1159,15 +1194,9 @@ handle_event({call,From}, {info, ChannelPid}, _, D) -> end, [], cache(D)), {keep_state_and_data, [{reply, From, {ok,Result}}]}; -handle_event({call,From}, stop, StateName, D0) -> - {disconnect, _Reason, {{replies, Replies}, Connection}} = - ssh_connection:handle_msg(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, - description = "User closed down connection"}, - D0#data.connection_state, - role(StateName)), - {Repls,D} = send_replies(Replies, D0), - {stop_and_reply, normal, [{reply,From,ok}|Repls], D#data{connection_state=Connection}}; - +handle_event({call,From}, stop, _StateName, D0) -> + {Repls,D} = send_replies(ssh_connection:handle_stop(D0#data.connection_state), D0), + {stop_and_reply, normal, [{reply,From,ok}|Repls], D}; handle_event({call,_}, _, StateName, _) when not ?CONNECTED(StateName) -> {keep_state_and_data, [postpone]}; @@ -1180,7 +1209,7 @@ handle_event({call,From}, {request, ChannelPid, ChannelId, Type, Data, Timeout}, D -> %% Note reply to channel will happen later when reply is recived from peer on the socket start_channel_request_timer(ChannelId, From, Timeout), - {keep_state, cache_request_idle_timer_check(D)} + {keep_state, D, cond_set_idle_timer(D)} end; handle_event({call,From}, {request, ChannelId, Type, Data, Timeout}, StateName, D0) @@ -1191,20 +1220,19 @@ handle_event({call,From}, {request, ChannelId, Type, Data, Timeout}, StateName, D -> %% Note reply to channel will happen later when reply is recived from peer on the socket start_channel_request_timer(ChannelId, From, Timeout), - {keep_state, cache_request_idle_timer_check(D)} + {keep_state, D, cond_set_idle_timer(D)} end; handle_event({call,From}, {data, ChannelId, Type, Data, Timeout}, StateName, D0) when ?CONNECTED(StateName) -> - {{replies, Replies}, Connection} = - ssh_connection:channel_data(ChannelId, Type, Data, D0#data.connection_state, From), - {Repls,D} = send_replies(Replies, D0#data{connection_state = Connection}), + {Repls,D} = send_replies(ssh_connection:channel_data(ChannelId, Type, Data, D0#data.connection_state, From), + D0), start_channel_request_timer(ChannelId, From, Timeout), % FIXME: No message exchange so why? {keep_state, D, Repls}; handle_event({call,From}, {eof, ChannelId}, StateName, D0) when ?CONNECTED(StateName) -> - case ssh_channel:cache_lookup(cache(D0), ChannelId) of + case ssh_client_channel:cache_lookup(cache(D0), ChannelId) of #channel{remote_id = Id, sent_close = false} -> D = send_msg(ssh_connection:channel_eof_msg(Id), D0), {keep_state, D, [{reply,From,ok}]}; @@ -1222,7 +1250,7 @@ handle_event({call,From}, InitialWindowSize, MaxPacketSize, Data), D1), - ssh_channel:cache_update(cache(D2), + ssh_client_channel:cache_update(cache(D2), #channel{type = Type, sys = "none", user = ChannelPid, @@ -1233,11 +1261,11 @@ handle_event({call,From}, }), D = add_request(true, ChannelId, From, D2), start_channel_request_timer(ChannelId, From, Timeout), - {keep_state, cache_cancel_idle_timer(D)}; + {keep_state, D, cond_set_idle_timer(D)}; handle_event({call,From}, {send_window, ChannelId}, StateName, D) when ?CONNECTED(StateName) -> - Reply = case ssh_channel:cache_lookup(cache(D), ChannelId) of + Reply = case ssh_client_channel:cache_lookup(cache(D), ChannelId) of #channel{send_window_size = WinSize, send_packet_size = Packsize} -> {ok, {WinSize, Packsize}}; @@ -1248,7 +1276,7 @@ handle_event({call,From}, {send_window, ChannelId}, StateName, D) handle_event({call,From}, {recv_window, ChannelId}, StateName, D) when ?CONNECTED(StateName) -> - Reply = case ssh_channel:cache_lookup(cache(D), ChannelId) of + Reply = case ssh_client_channel:cache_lookup(cache(D), ChannelId) of #channel{recv_window_size = WinSize, recv_packet_size = Packsize} -> {ok, {WinSize, Packsize}}; @@ -1259,11 +1287,11 @@ handle_event({call,From}, {recv_window, ChannelId}, StateName, D) handle_event({call,From}, {close, ChannelId}, StateName, D0) when ?CONNECTED(StateName) -> - case ssh_channel:cache_lookup(cache(D0), ChannelId) of + case ssh_client_channel:cache_lookup(cache(D0), ChannelId) of #channel{remote_id = Id} = Channel -> D1 = send_msg(ssh_connection:channel_close_msg(Id), D0), - ssh_channel:cache_update(cache(D1), Channel#channel{sent_close = true}), - {keep_state, cache_request_idle_timer_check(D1), [{reply,From,ok}]}; + ssh_client_channel:cache_update(cache(D1), Channel#channel{sent_close = true}), + {keep_state, D1, [cond_set_idle_timer(D1), {reply,From,ok}]}; undefined -> {keep_state_and_data, [{reply,From,ok}]} end; @@ -1279,61 +1307,91 @@ handle_event(info, {Proto, Sock, Info}, {hello,_}, #data{socket = Sock, {keep_state_and_data, [{next_event, internal, {info_line,Info}}]} end; + handle_event(info, {Proto, Sock, NewData}, StateName, D0 = #data{socket = Sock, transport_protocol = Proto}) -> try ssh_transport:handle_packet_part( D0#data.decrypted_data_buffer, <<(D0#data.encrypted_data_buffer)/binary, NewData/binary>>, - D0#data.undecrypted_packet_length, + D0#data.aead_data, + D0#data.undecrypted_packet_length, D0#data.ssh_params) of {packet_decrypted, DecryptedBytes, EncryptedDataRest, Ssh1} -> - D = D0#data{ssh_params = + D1 = D0#data{ssh_params = Ssh1#ssh{recv_sequence = ssh_transport:next_seqnum(Ssh1#ssh.recv_sequence)}, decrypted_data_buffer = <<>>, - undecrypted_packet_length = undefined, + undecrypted_packet_length = undefined, + aead_data = <<>>, encrypted_data_buffer = EncryptedDataRest}, try - ssh_message:decode(set_kex_overload_prefix(DecryptedBytes,D)) + ssh_message:decode(set_kex_overload_prefix(DecryptedBytes,D1)) of - Msg = #ssh_msg_kexinit{} -> - {keep_state, D, [{next_event, internal, prepare_next_packet}, + #ssh_msg_kexinit{} = Msg -> + {keep_state, D1, [{next_event, internal, prepare_next_packet}, {next_event, internal, {Msg,DecryptedBytes}} ]}; + + #ssh_msg_global_request{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_request_success{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_request_failure{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_channel_open{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_channel_open_confirmation{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_channel_open_failure{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_channel_window_adjust{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_channel_data{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_channel_extended_data{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_channel_eof{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_channel_close{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_channel_request{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_channel_failure{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + #ssh_msg_channel_success{} = Msg -> {keep_state, D1, ?CONNECTION_MSG(Msg)}; + Msg -> - {keep_state, D, [{next_event, internal, prepare_next_packet}, - {next_event, internal, Msg} + {keep_state, D1, [{next_event, internal, prepare_next_packet}, + {next_event, internal, Msg} ]} catch - _C:_E -> - disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = "Bad packet"}, - StateName, D) + C:E:ST -> + {Shutdown, D} = + ?send_disconnect(?SSH_DISCONNECT_PROTOCOL_ERROR, + io_lib:format("Bad packet: Decrypted, but can't decode~n~p:~p~n~p", + [C,E,ST]), + StateName, D1), + {stop, Shutdown, D} end; - {get_more, DecryptedBytes, EncryptedDataRest, RemainingSshPacketLen, Ssh1} -> + {get_more, DecryptedBytes, EncryptedDataRest, AeadData, RemainingSshPacketLen, Ssh1} -> %% Here we know that there are not enough bytes in %% EncryptedDataRest to use. We must wait for more. inet:setopts(Sock, [{active, once}]), {keep_state, D0#data{encrypted_data_buffer = EncryptedDataRest, decrypted_data_buffer = DecryptedBytes, - undecrypted_packet_length = RemainingSshPacketLen, + undecrypted_packet_length = RemainingSshPacketLen, + aead_data = AeadData, ssh_params = Ssh1}}; {bad_mac, Ssh1} -> - disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = "Bad packet"}, - StateName, D0#data{ssh_params=Ssh1}); - - {error, {exceeds_max_size,_PacketLen}} -> - disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = "Bad packet"}, - StateName, D0) + {Shutdown, D} = + ?send_disconnect(?SSH_DISCONNECT_PROTOCOL_ERROR, + "Bad packet: bad mac", + StateName, D0#data{ssh_params=Ssh1}), + {stop, Shutdown, D}; + + {error, {exceeds_max_size,PacketLen}} -> + {Shutdown, D} = + ?send_disconnect(?SSH_DISCONNECT_PROTOCOL_ERROR, + io_lib:format("Bad packet: Size (~p bytes) exceeds max size", + [PacketLen]), + StateName, D0), + {stop, Shutdown, D} catch - _C:_E -> - disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = "Bad packet"}, - StateName, D0) + C:E:ST -> + {Shutdown, D} = + ?send_disconnect(?SSH_DISCONNECT_PROTOCOL_ERROR, + io_lib:format("Bad packet: Couldn't decrypt~n~p:~p~n~p",[C,E,ST]), + StateName, D0), + {stop, Shutdown, D} end; @@ -1349,15 +1407,13 @@ handle_event(internal, prepare_next_packet, _, D) -> inet:setopts(D#data.socket, [{active, once}]), keep_state_and_data; -handle_event(info, {CloseTag,Socket}, StateName, - D = #data{socket = Socket, - transport_close_tag = CloseTag}) -> - %% Simulate a disconnect from the peer - handle_event(info, - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, - description = "Connection closed"}, - StateName, - D); +handle_event(info, {CloseTag,Socket}, _StateName, + D0 = #data{socket = Socket, + transport_close_tag = CloseTag, + connection_state = C0}) -> + {Repls, D} = send_replies(ssh_connection:handle_stop(C0), D0), + disconnect_fun("Received a transport close", D), + {stop_and_reply, {shutdown,"Connection closed"}, Repls, D}; handle_event(info, {timeout, {_, From} = Request}, _, #data{connection_state = #connection{requests = Requests} = C0} = D) -> @@ -1373,17 +1429,40 @@ handle_event(info, {timeout, {_, From} = Request}, _, end; %%% Handle that ssh channels user process goes down -handle_event(info, {'DOWN', _Ref, process, ChannelPid, _Reason}, _, D0) -> - {{replies, Replies}, D1} = handle_channel_down(ChannelPid, D0), - {Repls, D} = send_replies(Replies, D1), - {keep_state, D, Repls}; +handle_event(info, {'DOWN', _Ref, process, ChannelPid, _Reason}, _, D) -> + Cache = cache(D), + ssh_client_channel:cache_foldl( + fun(#channel{user=U, + local_id=Id}, Acc) when U == ChannelPid -> + ssh_client_channel:cache_delete(Cache, Id), + Acc; + (_,Acc) -> + Acc + end, [], Cache), + {keep_state, D, cond_set_idle_timer(D)}; + +handle_event({timeout,idle_time}, _Data, _StateName, _D) -> + {stop, {shutdown, "Timeout"}}; %%% So that terminate will be run when supervisor is shutdown -handle_event(info, {'EXIT', _Sup, Reason}, _, _) -> - {stop, {shutdown, Reason}}; +handle_event(info, {'EXIT', _Sup, Reason}, StateName, _) -> + Role = role(StateName), + if + Role == client -> + %% OTP-8111 tells this function clause fixes a problem in + %% clients, but there were no check for that role. + {stop, {shutdown, Reason}}; + + Reason == normal -> + %% An exit normal should not cause a server to crash. This has happend... + keep_state_and_data; + + true -> + {stop, {shutdown, Reason}} + end; handle_event(info, check_cache, _, D) -> - {keep_state, cache_check_set_idle_timer(D)}; + {keep_state, D, cond_set_idle_timer(D)}; handle_event(info, UnexpectedMessage, StateName, D = #data{ssh_params = Ssh}) -> case unexpected_fun(UnexpectedMessage, D) of @@ -1425,62 +1504,83 @@ handle_event(info, UnexpectedMessage, StateName, D = #data{ssh_params = Ssh}) -> keep_state_and_data end; -handle_event(internal, {disconnect,Msg,_Reason}, StateName, D) -> - disconnect(Msg, StateName, D); +handle_event(internal, {send_disconnect,Code,DetailedText,Module,Line}, StateName, D0) -> + {Shutdown, D} = + send_disconnect(Code, DetailedText, Module, Line, StateName, D0), + {stop, Shutdown, D}; + + +handle_event(enter, _OldState, State, D) -> + %% Just skip + {next_state, State, D}; handle_event(_Type, _Msg, {ext_info,Role,_ReNegFlag}, D) -> %% If something else arrives, goto next state and handle the event in that one {next_state, {connected,Role}, D, [postpone]}; -handle_event(Type, Ev, StateName, D) -> - Descr = +handle_event(Type, Ev, StateName, D0) -> + Details = case catch atom_to_list(element(1,Ev)) of "ssh_msg_" ++_ when Type==internal -> -%% "Message in wrong state"; lists:flatten(io_lib:format("Message ~p in wrong state (~p)", [element(1,Ev), StateName])); _ -> - "Internal error" + io_lib:format("Unhandled event in state ~p:~n~p", [StateName,Ev]) end, - disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = Descr}, - StateName, D). + {Shutdown, D} = + ?send_disconnect(?SSH_DISCONNECT_PROTOCOL_ERROR, Details, StateName, D0), + {stop, Shutdown, D}. %%-------------------------------------------------------------------- -spec terminate(any(), state_name(), #data{} - ) -> finalize_termination_result() . + ) -> term(). %% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -terminate(normal, StateName, State) -> - finalize_termination(StateName, State); +terminate(normal, _StateName, D) -> + stop_subsystem(D), + close_transport(D); -terminate({shutdown,{init,Reason}}, StateName, State) -> - error_logger:info_report(io_lib:format("Erlang ssh in connection handler init: ~p~n",[Reason])), - finalize_termination(StateName, State); - -terminate(shutdown, StateName, State0) -> - %% Terminated by supervisor - State = send_msg(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, - description = "Application shutdown"}, - State0), - finalize_termination(StateName, State); +terminate({shutdown,"Connection closed"}, _StateName, D) -> + %% Normal: terminated by a sent by peer + stop_subsystem(D), + close_transport(D); -terminate({shutdown,_R}, StateName, State) -> - finalize_termination(StateName, State); +terminate({shutdown,{init,Reason}}, StateName, D) -> + %% Error in initiation. "This error should not occur". + log(error, D, io_lib:format("Shutdown in init (StateName=~p): ~p~n",[StateName,Reason])), + stop_subsystem(D), + close_transport(D); -terminate(kill, StateName, State) -> - finalize_termination(StateName, State); +terminate({shutdown,_R}, _StateName, D) -> + %% Internal termination, usually already reported via ?send_disconnect resulting in a log entry + stop_subsystem(D), + close_transport(D); -terminate(Reason, StateName, State0) -> - %% Others, e.g undef, {badmatch,_} - log_error(Reason), - State = send_msg(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, - description = "Internal error"}, - State0), - finalize_termination(StateName, State). +terminate(shutdown, _StateName, D0) -> + %% Terminated by supervisor + %% Use send_msg directly instead of ?send_disconnect to avoid filling the log + D = send_msg(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, + description = "Terminated (shutdown) by supervisor"}, + D0), + close_transport(D); + +terminate(kill, _StateName, D) -> + %% Got a kill signal + stop_subsystem(D), + close_transport(D); + +terminate(Reason, StateName, D0) -> + %% Others, e.g undef, {badmatch,_}, ... + log(error, D0, Reason), + {_ShutdownReason, D} = ?send_disconnect(?SSH_DISCONNECT_BY_APPLICATION, + "Internal error", + io_lib:format("Reason: ~p",[Reason]), + StateName, D0), + stop_subsystem(D), + close_transport(D). %%-------------------------------------------------------------------- @@ -1489,36 +1589,41 @@ terminate(Reason, StateName, State0) -> format_status(normal, [_, _StateName, D]) -> [{data, [{"State", D}]}]; format_status(terminate, [_, _StateName, D]) -> - DataPropList0 = fmt_stat_rec(record_info(fields, data), D, - [decrypted_data_buffer, - encrypted_data_buffer, - key_exchange_init_msg, - user_passwords, - opts, - inet_initial_recbuf_size]), - SshPropList = fmt_stat_rec(record_info(fields, ssh), D#data.ssh_params, - [c_keyinit, - s_keyinit, - send_mac_key, - send_mac_size, - recv_mac_key, - recv_mac_size, - encrypt_keys, - encrypt_ctx, - decrypt_keys, - decrypt_ctx, - compress_ctx, - decompress_ctx, - shared_secret, - exchanged_hash, - session_id, - keyex_key, - keyex_info, - available_host_keys]), - DataPropList = lists:keyreplace(ssh_params, 1, DataPropList0, - {ssh_params,SshPropList}), - [{data, [{"State", DataPropList}]}]. - + [{data, [{"State", state_data2proplist(D)}]}]. + + +state_data2proplist(D) -> + DataPropList0 = + fmt_stat_rec(record_info(fields, data), D, + [decrypted_data_buffer, + encrypted_data_buffer, + key_exchange_init_msg, + user_passwords, + opts, + inet_initial_recbuf_size]), + SshPropList = + fmt_stat_rec(record_info(fields, ssh), D#data.ssh_params, + [c_keyinit, + s_keyinit, + send_mac_key, + send_mac_size, + recv_mac_key, + recv_mac_size, + encrypt_keys, + encrypt_ctx, + decrypt_keys, + decrypt_ctx, + compress_ctx, + decompress_ctx, + shared_secret, + exchanged_hash, + session_id, + keyex_key, + keyex_info, + available_host_keys]), + lists:keyreplace(ssh_params, 1, DataPropList0, + {ssh_params,SshPropList}). + fmt_stat_rec(FieldNames, Rec, Exclude) -> Values = tl(tuple_to_list(Rec)), @@ -1555,39 +1660,44 @@ start_the_connection_child(UserPid, Role, Socket, Options0) -> %%-------------------------------------------------------------------- %% Stopping --type finalize_termination_result() :: ok . - -finalize_termination(_StateName, #data{transport_cb = Transport, - connection_state = Connection, - socket = Socket}) -> - case Connection of - #connection{system_supervisor = SysSup, - sub_system_supervisor = SubSysSup} when is_pid(SubSysSup) -> - ssh_system_sup:stop_subsystem(SysSup, SubSysSup); - _ -> - do_nothing - end, - (catch Transport:close(Socket)), + +stop_subsystem(#data{connection_state = + #connection{system_supervisor = SysSup, + sub_system_supervisor = SubSysSup}}) when is_pid(SubSysSup) -> + ssh_system_sup:stop_subsystem(SysSup, SubSysSup); +stop_subsystem(_) -> ok. + +close_transport(#data{transport_cb = Transport, + socket = Socket}) -> + try + Transport:close(Socket) + of + _ -> ok + catch + _:_ -> ok + end. + %%-------------------------------------------------------------------- %% "Invert" the Role peer_role(client) -> server; peer_role(server) -> client. %%-------------------------------------------------------------------- -available_hkey_algorithms(Role, Options) -> - KeyCb = ?GET_OPT(key_cb, Options), - case [A || A <- available_hkey_algos(Options), - (Role==client) orelse available_host_key(KeyCb, A, Options) - ] of - - [] when Role==client -> - error({shutdown, "No public key algs"}); - - [] when Role==server -> - error({shutdown, "No host key available"}); +available_hkey_algorithms(client, Options) -> + case available_hkey_algos(Options) of + [] -> + error({shutdown, "No public key algs"}); + Algs -> + [atom_to_list(A) || A<-Algs] + end; +available_hkey_algorithms(server, Options) -> + case [A || A <- available_hkey_algos(Options), + is_usable_host_key(A, Options)] of + [] -> + error({shutdown, "No host key available"}); Algs -> [atom_to_list(A) || A<-Algs] end. @@ -1603,18 +1713,6 @@ available_hkey_algos(Options) -> AvailableAndSupported. -%% Alg :: atom() -available_host_key({KeyCb,KeyCbOpts}, Alg, Opts) -> - UserOpts = ?GET_OPT(user_options, Opts), - case KeyCb:host_key(Alg, [{key_cb_private,KeyCbOpts}|UserOpts]) of - {ok,Key} -> - %% Check the key - the KeyCb may be a buggy plugin - ssh_transport:valid_key_sha_alg(Key, Alg); - _ -> - false - end. - - send_msg(Msg, State=#data{ssh_params=Ssh0}) when is_tuple(Msg) -> {Bytes, Ssh} = ssh_transport:ssh_packet(Msg, Ssh0), send_bytes(Bytes, State), @@ -1662,48 +1760,6 @@ call(FsmPid, Event, Timeout) -> end. -handle_connection_msg(Msg, StateName, D0 = #data{starter = User, - connection_state = Connection0, - event_queue = Qev0}) -> - Renegotiation = renegotiation(StateName), - Role = role(StateName), - try ssh_connection:handle_msg(Msg, Connection0, Role) of - {{replies, Replies}, Connection} -> - {Repls, D} = - case StateName of - {connected,_} -> - send_replies(Replies, D0#data{connection_state=Connection}); - _ -> - {ConnReplies, NonConnReplies} = lists:splitwith(fun not_connected_filter/1, Replies), - send_replies(NonConnReplies, D0#data{event_queue = Qev0 ++ ConnReplies}) - end, - {keep_state, D, Repls}; - - {noreply, Connection} -> - {keep_state, D0#data{connection_state = Connection}}; - - {disconnect, Reason0, {{replies, Replies}, Connection}} -> - {Repls, D} = send_replies(Replies, D0#data{connection_state = Connection}), - case {Reason0,Role} of - {{_, Reason}, client} when ((StateName =/= {connected,client}) and (not Renegotiation)) -> - User ! {self(), not_connected, Reason}; - _ -> - ok - end, - {stop_and_reply, {shutdown,normal}, Repls, D#data{connection_state = Connection}} - - catch - _:Error -> - {disconnect, _Reason, {{replies, Replies}, Connection}} = - ssh_connection:handle_msg( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, - description = "Internal error"}, - Connection0, Role), - {Repls, D} = send_replies(Replies, D0#data{connection_state = Connection}), - {stop_and_reply, {shutdown,Error}, Repls, D#data{connection_state = Connection}} - end. - - set_kex_overload_prefix(Msg = <<?BYTE(Op),_/binary>>, #data{ssh_params=SshParams}) when Op == 30; Op == 31 @@ -1711,6 +1767,10 @@ set_kex_overload_prefix(Msg = <<?BYTE(Op),_/binary>>, #data{ssh_params=SshParams case catch atom_to_list(kex(SshParams)) of "ecdh-sha2-" ++ _ -> <<"ecdh",Msg/binary>>; + "curve25519-" ++ _ -> + <<"ecdh",Msg/binary>>; + "curve448-" ++ _ -> + <<"ecdh",Msg/binary>>; "diffie-hellman-group-exchange-" ++ _ -> <<"dh_gex",Msg/binary>>; "diffie-hellman-group" ++ _ -> @@ -1772,15 +1832,26 @@ ext_info(_, D0) -> D0. %%%---------------------------------------------------------------- -is_usable_user_pubkey(A, Ssh) -> - case ssh_auth:get_public_key(A, Ssh) of +is_usable_user_pubkey(Alg, Ssh) -> + try ssh_auth:get_public_key(Alg, Ssh) of {ok,_} -> true; _ -> false + catch + _:_ -> false + end. + +%%%---------------------------------------------------------------- +is_usable_host_key(Alg, Opts) -> + try ssh_transport:get_host_key(Alg, Opts) + of + _PrivHostKey -> true + catch + _:_ -> false end. %%%---------------------------------------------------------------- handle_request(ChannelPid, ChannelId, Type, Data, WantReply, From, D) -> - case ssh_channel:cache_lookup(cache(D), ChannelId) of + case ssh_client_channel:cache_lookup(cache(D), ChannelId) of #channel{remote_id = Id, sent_close = false} = Channel -> update_sys(cache(D), Channel, Type, ChannelPid), @@ -1795,7 +1866,7 @@ handle_request(ChannelPid, ChannelId, Type, Data, WantReply, From, D) -> end. handle_request(ChannelId, Type, Data, WantReply, From, D) -> - case ssh_channel:cache_lookup(cache(D), ChannelId) of + case ssh_client_channel:cache_lookup(cache(D), ChannelId) of #channel{remote_id = Id, sent_close = false} -> send_msg(ssh_connection:channel_request_msg(Id, Type, WantReply, Data), @@ -1809,20 +1880,8 @@ handle_request(ChannelId, Type, Data, WantReply, From, D) -> end. %%%---------------------------------------------------------------- -handle_channel_down(ChannelPid, D) -> - ssh_channel:cache_foldl( - fun(Channel, Acc) when Channel#channel.user == ChannelPid -> - ssh_channel:cache_delete(cache(D), - Channel#channel.local_id), - Acc; - (_,Acc) -> - Acc - end, [], cache(D)), - {{replies, []}, cache_check_set_idle_timer(D)}. - - update_sys(Cache, Channel, Type, ChannelPid) -> - ssh_channel:cache_update(Cache, + ssh_client_channel:cache_update(Cache, Channel#channel{sys = Type, user = ChannelPid}). add_request(false, _ChannelId, _From, State) -> @@ -1839,12 +1898,86 @@ new_channel_id(#data{connection_state = #connection{channel_id_seed = Id} = {Id, State#data{connection_state = Connection#connection{channel_id_seed = Id + 1}}}. + %%%---------------------------------------------------------------- -%% %%% This server/client has decided to disconnect via the state machine: -disconnect(Msg=#ssh_msg_disconnect{description=Description}, _StateName, State0) -> - State = send_msg(Msg, State0), - disconnect_fun(Description, State), - {stop, {shutdown,Description}, State}. +start_rekeying(Role, D0) -> + {KeyInitMsg, SshPacket, Ssh} = ssh_transport:key_exchange_init_msg(D0#data.ssh_params), + send_bytes(SshPacket, D0), + D = D0#data{ssh_params = Ssh, + key_exchange_init_msg = KeyInitMsg}, + {next_state, {kexinit,Role,renegotiate}, D}. + + +init_renegotiate_timers(State, D) -> + {RekeyTimeout,_MaxSent} = ?GET_OPT(rekey_limit, (D#data.ssh_params)#ssh.opts), + {next_state, State, D, [{{timeout,renegotiate}, RekeyTimeout, none}, + {{timeout,check_data_size}, ?REKEY_DATA_TIMOUT, none} ]}. + + +pause_renegotiate_timers(State, D) -> + {next_state, State, D, [{{timeout,renegotiate}, infinity, none}, + {{timeout,check_data_size}, infinity, none} ]}. + +check_data_rekeying(Role, D) -> + {ok, [{send_oct,SocketSentTotal}]} = inet:getstat(D#data.socket, [send_oct]), + SentSinceRekey = SocketSentTotal - D#data.last_size_rekey, + {_RekeyTimeout,MaxSent} = ?GET_OPT(rekey_limit, (D#data.ssh_params)#ssh.opts), + case check_data_rekeying_dbg(SentSinceRekey, MaxSent) of + true -> + start_rekeying(Role, D#data{last_size_rekey = SocketSentTotal}); + _ -> + %% Not enough data sent for a re-negotiation. Restart timer. + {keep_state, D, {{timeout,check_data_size}, ?REKEY_DATA_TIMOUT, none}} + end. + +check_data_rekeying_dbg(SentSinceRekey, MaxSent) -> + %% This function is for the ssh_dbg to trace on. See dbg_trace/3 at the end. + SentSinceRekey >= MaxSent. + +%%%---------------------------------------------------------------- +%%% This server/client has decided to disconnect via the state machine: +%%% The unused arguments are for debugging. + +send_disconnect(Code, DetailedText, Module, Line, StateName, D) -> + send_disconnect(Code, default_text(Code), DetailedText, Module, Line, StateName, D). + +send_disconnect(Code, Reason, DetailedText, Module, Line, StateName, D0) -> + Msg = #ssh_msg_disconnect{code = Code, + description = Reason}, + D = send_msg(Msg, D0), + LogMsg = io_lib:format("Disconnects with code = ~p [RFC4253 11.1]: ~s",[Code,Reason]), + call_disconnectfun_and_log_cond(LogMsg, DetailedText, Module, Line, StateName, D), + {{shutdown,Reason}, D}. + +call_disconnectfun_and_log_cond(LogMsg, DetailedText, Module, Line, StateName, D) -> + case disconnect_fun(LogMsg, D) of + void -> + log(info, D, + io_lib:format("~s~n" + "State = ~p~n" + "Module = ~p, Line = ~p.~n" + "Details:~n ~s~n", + [LogMsg, StateName, Module, Line, DetailedText])); + _ -> + ok + end. + + +default_text(?SSH_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT) -> "Host not allowed to connect"; +default_text(?SSH_DISCONNECT_PROTOCOL_ERROR) -> "Protocol error"; +default_text(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED) -> "Key exchange failed"; +default_text(?SSH_DISCONNECT_RESERVED) -> "Reserved"; +default_text(?SSH_DISCONNECT_MAC_ERROR) -> "Mac error"; +default_text(?SSH_DISCONNECT_COMPRESSION_ERROR) -> "Compression error"; +default_text(?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE) -> "Service not available"; +default_text(?SSH_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED) -> "Protocol version not supported"; +default_text(?SSH_DISCONNECT_HOST_KEY_NOT_VERIFIABLE) -> "Host key not verifiable"; +default_text(?SSH_DISCONNECT_CONNECTION_LOST) -> "Connection lost"; +default_text(?SSH_DISCONNECT_BY_APPLICATION) -> "By application"; +default_text(?SSH_DISCONNECT_TOO_MANY_CONNECTIONS) -> "Too many connections"; +default_text(?SSH_DISCONNECT_AUTH_CANCELLED_BY_USER) -> "Auth cancelled by user"; +default_text(?SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE) -> "Unable to connect using the available authentication methods"; +default_text(?SSH_DISCONNECT_ILLEGAL_USER_NAME) -> "Illegal user name". %%%---------------------------------------------------------------- counterpart_versions(NumVsn, StrVsn, #ssh{role = server} = Ssh) -> @@ -1857,12 +1990,11 @@ conn_info(client_version, #data{ssh_params=S}) -> {S#ssh.c_vsn, S#ssh.c_version} conn_info(server_version, #data{ssh_params=S}) -> {S#ssh.s_vsn, S#ssh.s_version}; conn_info(peer, #data{ssh_params=S}) -> S#ssh.peer; conn_info(user, D) -> D#data.auth_user; -conn_info(sockname, D) -> {ok, SockName} = inet:sockname(D#data.socket), - SockName; +conn_info(sockname, #data{ssh_params=S}) -> S#ssh.local; %% dbg options ( = not documented): conn_info(socket, D) -> D#data.socket; conn_info(chan_ids, D) -> - ssh_channel:cache_foldl(fun(#channel{local_id=Id}, Acc) -> + ssh_client_channel:cache_foldl(fun(#channel{local_id=Id}, Acc) -> [Id | Acc] end, [], cache(D)). @@ -1889,23 +2021,54 @@ fold_keys(Keys, Fun, Extra) -> end, [], Keys). %%%---------------------------------------------------------------- -log_error(Reason) -> - Report = io_lib:format("Erlang ssh connection handler failed with reason:~n" - " ~p~n" - "Stacktrace:~n" - " ~p~n", - [Reason, erlang:get_stacktrace()]), - error_logger:error_report(Report). +log(Tag, D, Reason) -> + case atom_to_list(Tag) of % Dialyzer-technical reasons... + "error" -> do_log(error_msg, Reason, D); + "warning" -> do_log(warning_msg, Reason, D); + "info" -> do_log(info_msg, Reason, D) + end. + +do_log(F, Reason, #data{ssh_params = #ssh{role = Role} = S + }) -> + VSN = + case application:get_key(ssh,vsn) of + {ok,Vsn} -> Vsn; + undefined -> "" + end, + PeerVersion = + case Role of + server -> S#ssh.c_version; + client -> S#ssh.s_version + end, + CryptoInfo = + try + [{_,_,CI}] = crypto:info_lib(), + <<"(",CI/binary,")">> + catch + _:_ -> "" + end, + Other = + case Role of + server -> "Client"; + client -> "Server" + end, + error_logger:F("Erlang SSH ~p ~s ~s.~n" + "~s: ~p~n" + "~s~n", + [Role, VSN, CryptoInfo, + Other, PeerVersion, + Reason]). %%%---------------------------------------------------------------- not_connected_filter({connection_reply, _Data}) -> true; not_connected_filter(_) -> false. %%%---------------------------------------------------------------- + +send_replies({Repls,C = #connection{}}, D) when is_list(Repls) -> + send_replies(Repls, D#data{connection_state=C}); send_replies(Repls, State) -> - lists:foldl(fun get_repl/2, - {[],State}, - Repls). + lists:foldl(fun get_repl/2, {[],State}, Repls). get_repl({connection_reply,Msg}, {CallRepls,S}) -> if is_record(Msg, ssh_msg_channel_success) -> @@ -1922,19 +2085,21 @@ get_repl({channel_data,Pid,Data}, Acc) -> get_repl({channel_request_reply,From,Data}, {CallRepls,S}) -> {[{reply,From,Data}|CallRepls], S}; get_repl({flow_control,Cache,Channel,From,Msg}, {CallRepls,S}) -> - ssh_channel:cache_update(Cache, Channel#channel{flow_control = undefined}), + ssh_client_channel:cache_update(Cache, Channel#channel{flow_control = undefined}), {[{reply,From,Msg}|CallRepls], S}; get_repl({flow_control,From,Msg}, {CallRepls,S}) -> {[{reply,From,Msg}|CallRepls], S}; -get_repl(noreply, Acc) -> - Acc; +%% get_repl(noreply, Acc) -> +%% Acc; +%% get_repl([], Acc) -> +%% Acc; get_repl(X, Acc) -> exit({get_repl,X,Acc}). %%%---------------------------------------------------------------- -define(CALL_FUN(Key,D), catch (?GET_OPT(Key, (D#data.ssh_params)#ssh.opts)) ). -disconnect_fun({disconnect,Msg}, D) -> ?CALL_FUN(disconnectfun,D)(Msg); +%%disconnect_fun({disconnect,Msg}, D) -> ?CALL_FUN(disconnectfun,D)(Msg); disconnect_fun(Reason, D) -> ?CALL_FUN(disconnectfun,D)(Reason). unexpected_fun(UnexpectedMessage, #data{ssh_params = #ssh{peer = {_,Peer} }} = D) -> @@ -1981,60 +2146,12 @@ retry_fun(User, Reason, #data{ssh_params = #ssh{opts = Opts, %%% Cache idle timer that closes the connection if there are no %%% channels open for a while. -cache_init_idle_timer(D) -> - case ?GET_OPT(idle_time, (D#data.ssh_params)#ssh.opts) of - infinity -> - D#data{idle_timer_value = infinity, - idle_timer_ref = infinity % A flag used later... - }; - IdleTime -> - %% We dont want to set the timeout on first connect - D#data{idle_timer_value = IdleTime} - end. - - -cache_check_set_idle_timer(D = #data{idle_timer_ref = undefined, - idle_timer_value = IdleTime}) -> - %% No timer set - shall we set one? - case ssh_channel:cache_info(num_entries, cache(D)) of - 0 when IdleTime == infinity -> - %% No. Meaningless to set a timer that fires in an infinite time... - D; - 0 -> - %% Yes, we'll set one since the cache is empty and it should not - %% be that for a specified time - D#data{idle_timer_ref = - erlang:send_after(IdleTime, self(), {'EXIT',[],"Timeout"})}; - _ -> - %% No - there are entries in the cache - D - end; -cache_check_set_idle_timer(D) -> - %% There is already a timer set or the timeout time is infinite - D. - - -cache_cancel_idle_timer(D) -> - case D#data.idle_timer_ref of - infinity -> - %% The timer is not activated - D; - undefined -> - %% The timer is already cancelled - D; - TimerRef -> - %% The timer is active - erlang:cancel_timer(TimerRef), - D#data{idle_timer_ref = undefined} +cond_set_idle_timer(D) -> + case ssh_client_channel:cache_info(num_entries, cache(D)) of + 0 -> {{timeout,idle_time}, ?GET_OPT(idle_time, (D#data.ssh_params)#ssh.opts), none}; + _ -> {{timeout,idle_time}, infinity, none} end. - -cache_request_idle_timer_check(D = #data{idle_timer_value = infinity}) -> - D; -cache_request_idle_timer_check(D = #data{idle_timer_value = IdleTime}) -> - erlang:send_after(IdleTime, self(), check_cache), - D. - %%%---------------------------------------------------------------- start_channel_request_timer(_,_, infinity) -> ok; @@ -2089,3 +2206,164 @@ update_inet_buffers(Socket) -> catch _:_ -> ok end. + +%%%################################################################ +%%%# +%%%# Tracing +%%%# + +dbg_trace(points, _, _) -> [terminate, disconnect, connections, connection_events, renegotiation]; + +dbg_trace(flags, connections, A) -> [c] ++ dbg_trace(flags, terminate, A); +dbg_trace(on, connections, A) -> dbg:tp(?MODULE, init_connection_handler, 3, x), + dbg_trace(on, terminate, A); +dbg_trace(off, connections, A) -> dbg:ctpg(?MODULE, init_connection_handler, 3), + dbg_trace(off, terminate, A); +dbg_trace(format, connections, {call, {?MODULE,init_connection_handler, [Role, Sock, Opts]}}) -> + DefaultOpts = ssh_options:handle_options(Role,[]), + ExcludedKeys = [internal_options, user_options], + NonDefaultOpts = + maps:filter(fun(K,V) -> + case lists:member(K,ExcludedKeys) of + true -> + false; + false -> + V =/= (catch maps:get(K,DefaultOpts)) + end + end, + Opts), + {ok, {IPp,Portp}} = inet:peername(Sock), + {ok, {IPs,Ports}} = inet:sockname(Sock), + [io_lib:format("Starting ~p connection:\n",[Role]), + io_lib:format("Socket = ~p, Peer = ~s:~p, Local = ~s:~p,~n" + "Non-default options:~n~p", + [Sock,inet:ntoa(IPp),Portp,inet:ntoa(IPs),Ports, + NonDefaultOpts]) + ]; +dbg_trace(format, connections, F) -> + dbg_trace(format, terminate, F); + +dbg_trace(flags, connection_events, _) -> [c]; +dbg_trace(on, connection_events, _) -> dbg:tp(?MODULE, handle_event, 4, x); +dbg_trace(off, connection_events, _) -> dbg:ctpg(?MODULE, handle_event, 4); +dbg_trace(format, connection_events, {call, {?MODULE,handle_event, [EventType, EventContent, State, _Data]}}) -> + ["Connection event\n", + io_lib:format("EventType: ~p~nEventContent: ~p~nState: ~p~n", [EventType, EventContent, State]) + ]; +dbg_trace(format, connection_events, {return_from, {?MODULE,handle_event,4}, Ret}) -> + ["Connection event result\n", + io_lib:format("~p~n", [event_handler_result(Ret)]) + ]; + +dbg_trace(flags, renegotiation, _) -> [c]; +dbg_trace(on, renegotiation, _) -> dbg:tpl(?MODULE, init_renegotiate_timers, 2, x), + dbg:tpl(?MODULE, pause_renegotiate_timers, 2, x), + dbg:tpl(?MODULE, check_data_rekeying_dbg, 2, x), + dbg:tpl(?MODULE, start_rekeying, 2, x); +dbg_trace(off, renegotiation, _) -> dbg:ctpl(?MODULE, init_renegotiate_timers, 2), + dbg:ctpl(?MODULE, pause_renegotiate_timers, 2), + dbg:ctpl(?MODULE, check_data_rekeying_dbg, 2), + dbg:ctpl(?MODULE, start_rekeying, 2); +dbg_trace(format, renegotiation, {call, {?MODULE,init_renegotiate_timers,[_State,D]}}) -> + ["Renegotiation init\n", + io_lib:format("rekey_limit: ~p ({ms,bytes})~ncheck_data_size: ~p (ms)~n", + [?GET_OPT(rekey_limit, (D#data.ssh_params)#ssh.opts), + ?REKEY_DATA_TIMOUT]) + ]; +dbg_trace(format, renegotiation, {call, {?MODULE,pause_renegotiate_timers,[_State,_D]}}) -> + ["Renegotiation pause\n"]; +dbg_trace(format, renegotiation, {call, {?MODULE,start_rekeying,[_Role,_D]}}) -> + ["Renegotiation start rekeying\n"]; +dbg_trace(format, renegotiation, {call, {?MODULE,check_data_rekeying_dbg,[SentSinceRekey, MaxSent]}}) -> + ["Renegotiation check data sent\n", + io_lib:format("TotalSentSinceRekey: ~p~nMaxBeforeRekey: ~p~nStartRekey: ~p~n", + [SentSinceRekey, MaxSent, SentSinceRekey >= MaxSent]) + ]; + + + +dbg_trace(flags, terminate, _) -> [c]; +dbg_trace(on, terminate, _) -> dbg:tp(?MODULE, terminate, 3, x); +dbg_trace(off, terminate, _) -> dbg:ctpg(?MODULE, terminate, 3); +dbg_trace(format, terminate, {call, {?MODULE,terminate, [Reason, StateName, D]}}) -> + ExtraInfo = + try + {conn_info(peer,D), + conn_info(user,D), + conn_info(sockname,D)} + of + {{_,{IPp,Portp}}, Usr, {IPs,Ports}} when is_tuple(IPp), is_tuple(IPs), + is_integer(Portp), is_integer(Ports) -> + io_lib:format("Peer=~s:~p, Local=~s:~p, User=~p", + [inet:ntoa(IPp),Portp,inet:ntoa(IPs),Ports,Usr]); + {Peer,Usr,Sockname} -> + io_lib:format("Peer=~p, Local=~p, User=~p",[Peer,Sockname,Usr]) + catch + _:_ -> + "" + end, + if + Reason == normal ; + Reason == shutdown ; + element(1,Reason) == shutdown + -> + ["Connection Terminating:\n", + io_lib:format("Reason: ~p, StateName: ~p~n~s", [Reason, StateName, ExtraInfo]) + ]; + + true -> + ["Connection Terminating:\n", + io_lib:format("Reason: ~p, StateName: ~p~n~s~nStateData = ~p", + [Reason, StateName, ExtraInfo, state_data2proplist(D)]) + ] + end; + +dbg_trace(flags, disconnect, _) -> [c]; +dbg_trace(on, disconnect, _) -> dbg:tpl(?MODULE, send_disconnect, 7, x); +dbg_trace(off, disconnect, _) -> dbg:ctpl(?MODULE, send_disconnect, 7); +dbg_trace(format, disconnect, {call,{?MODULE,send_disconnect, + [Code, Reason, DetailedText, Module, Line, StateName, _D]}}) -> + ["Disconnecting:\n", + io_lib:format(" Module = ~p, Line = ~p, StateName = ~p,~n" + " Code = ~p, Reason = ~p,~n" + " DetailedText =~n" + " ~p", + [Module, Line, StateName, Code, Reason, lists:flatten(DetailedText)]) + ]. + + +event_handler_result({next_state, NextState, _NewData}) -> + {next_state, NextState, "#data{}"}; +event_handler_result({next_state, NextState, _NewData, Actions}) -> + {next_state, NextState, "#data{}", Actions}; +event_handler_result(R) -> + state_callback_result(R). + +state_callback_result({keep_state, _NewData}) -> + {keep_state, "#data{}"}; +state_callback_result({keep_state, _NewData, Actions}) -> + {keep_state, "#data{}", Actions}; +state_callback_result(keep_state_and_data) -> + keep_state_and_data; +state_callback_result({keep_state_and_data, Actions}) -> + {keep_state_and_data, Actions}; +state_callback_result({repeat_state, _NewData}) -> + {repeat_state, "#data{}"}; +state_callback_result({repeat_state, _NewData, Actions}) -> + {repeat_state, "#data{}", Actions}; +state_callback_result(repeat_state_and_data) -> + repeat_state_and_data; +state_callback_result({repeat_state_and_data, Actions}) -> + {repeat_state_and_data, Actions}; +state_callback_result(stop) -> + stop; +state_callback_result({stop, Reason}) -> + {stop, Reason}; +state_callback_result({stop, Reason, _NewData}) -> + {stop, Reason, "#data{}"}; +state_callback_result({stop_and_reply, Reason, Replies}) -> + {stop_and_reply, Reason, Replies}; +state_callback_result({stop_and_reply, Reason, Replies, _NewData}) -> + {stop_and_reply, Reason, Replies, "#data{}"}; +state_callback_result(R) -> + R. diff --git a/lib/ssh/src/ssh_connection_sup.erl b/lib/ssh/src/ssh_connection_sup.erl index 2e8450090a..79804b8630 100644 --- a/lib/ssh/src/ssh_connection_sup.erl +++ b/lib/ssh/src/ssh_connection_sup.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. diff --git a/lib/ssh/src/ssh_daemon_channel.erl b/lib/ssh/src/ssh_daemon_channel.erl index 6ca93eff44..30c4773a7a 100644 --- a/lib/ssh/src/ssh_daemon_channel.erl +++ b/lib/ssh/src/ssh_daemon_channel.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2013-2016. All Rights Reserved. +%% Copyright Ericsson AB 2013-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -25,7 +25,7 @@ -module(ssh_daemon_channel). -%% API to special server side channel that can be pluged into the erlang ssh daemeon +%% API to server side channel that can be pluged into the erlang ssh daemeon -callback init(Args :: term()) -> {ok, State :: term()} | {ok, State :: term(), timeout() | hibernate} | {stop, Reason :: term()} | ignore. @@ -36,34 +36,20 @@ term(). -callback handle_msg(Msg ::term(), State :: term()) -> - {ok, State::term()} | {stop, ChannelId::integer(), State::term()}. --callback handle_ssh_msg({ssh_cm, ConnectionRef::term(), SshMsg::term()}, + {ok, State::term()} | {stop, ChannelId::ssh:channel_id(), State::term()}. +-callback handle_ssh_msg({ssh_cm, ConnectionRef::ssh:connection_ref(), SshMsg::term()}, State::term()) -> {ok, State::term()} | - {stop, ChannelId::integer(), + {stop, ChannelId::ssh:channel_id(), State::term()}. -%%% API --export([start/4, start/5, start_link/4, start_link/5, enter_loop/1]). - -%% gen_server callbacks --export([init/1, terminate/2]). - -start(ConnectionManager, ChannelId, CallBack, CbInitArgs) -> - ssh_channel:start(ConnectionManager, ChannelId, CallBack, CbInitArgs, undefined). - -start(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec) -> - ssh_channel:start(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec). - -start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs) -> - ssh_channel:start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, undefined). +%%% Internal API +-export([start_link/5, + get_print_info/1 + ]). start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec) -> - ssh_channel:start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec). + ssh_server_channel:start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec). -enter_loop(State) -> - ssh_channel:enter_loop(State). -init(Args) -> - ssh_channel:init(Args). -terminate(Reason, State) -> - ssh_channel:terminate(Reason, State). +get_print_info(Pid) -> + ssh_server_channel:get_print_info(Pid). diff --git a/lib/ssh/src/ssh_dbg.erl b/lib/ssh/src/ssh_dbg.erl index eb2c2848f3..43ac4c0ccf 100644 --- a/lib/ssh/src/ssh_dbg.erl +++ b/lib/ssh/src/ssh_dbg.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2017. All Rights Reserved. +%% Copyright Ericsson AB 2004-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -20,339 +20,119 @@ %% +%%% Purpose: +%%% This module implements support for using the Erlang trace in a simple way for ssh +%%% debugging. +%%% +%%% Begin the session with ssh_dbg:start(). This will do a dbg:start() if needed and +%%% then dbg:p/2 to set some flags. +%%% +%%% Next select trace points to activate: for example plain text printouts of messages +%%% sent or received. This is switched on and off with ssh_dbg:on(TracePoint(s)) and +%%% ssh_dbg:off(TracePoint(s)). For example: +%%% +%%% ssh_dbg:on(messages) -- switch on printing plain text messages +%%% ssh_dbg:on([alg,terminate]) -- switch on printing info about algorithm negotiation +%%% ssh_dbg:on() -- switch on all ssh debugging +%%% +%%% To switch, use the off/0 or off/1 function in the same way, for example: +%%% +%%% ssh_dbg:off(alg) -- switch off algorithm negotiation tracing, but keep all other +%%% ssh_dbg:off() -- switch off all ssh debugging +%%% +%%% Present the trace result with some other method than the default io:format/2: +%%% ssh_dbg:start(fun(Format,Args) -> +%%% my_special( io_lib:format(Format,Args) ) +%%% end) +%%% + -module(ssh_dbg). --export([messages/0, messages/1, messages/2, messages/3, - auth/0, auth/1, auth/2, auth/3, - algs/0, algs/1, algs/2, algs/3, - hostkey/0, hostkey/1, hostkey/2, hostkey/3, - stop/0 +-export([start/0, start/1, + stop/0, + start_server/0, + start_tracer/0, start_tracer/1, + on/1, on/0, + off/1, off/0, + go_on/0, + %% Circular buffer + cbuf_start/0, cbuf_start/1, + cbuf_stop_clear/0, + cbuf_in/1, + cbuf_list/0, + hex_dump/1, hex_dump/2, + fmt_cbuf_items/0, fmt_cbuf_item/1 ]). -export([shrink_bin/1, - wr_record/3]). + reduce_state/1, + wr_record/3]). + +-export([init/1, handle_call/3, handle_cast/2, handle_info/2]). -include("ssh.hrl"). -include("ssh_transport.hrl"). -include("ssh_connect.hrl"). -include("ssh_auth.hrl"). -%%%================================================================ -messages() -> start(msg). -messages(F) -> start(msg,F). -messages(F,X) -> start(msg,F,X). -messages(F,M,I) -> start(msg,F,M,I). - -auth() -> start(auth). -auth(F) -> start(auth,F). -auth(F,X) -> start(auth,F,X). -auth(F,M,I) -> start(auth,F,M,I). - -algs() -> start(algs). -algs(F) -> start(algs,F). -algs(F,X) -> start(algs,F,X). -algs(F,M,I) -> start(algs,F,M,I). - -hostkey() -> start(hostkey). -hostkey(F) -> start(hostkey,F). -hostkey(F,X) -> start(hostkey,F,X). -hostkey(F,M,I) -> start(hostkey,F,M,I). - -stop() -> dbg:stop(). +-behaviour(gen_server). +-define(SERVER, ?MODULE). -%%%---------------------------------------------------------------- -start(Type) -> start(Type, fun io:format/2). - -start(Type, F) when is_function(F,2) -> start(Type, fmt_fun(F)); -start(Type, F) when is_function(F,3) -> start(Type, F, id_fun()). +-define(CALL_TIMEOUT, 15000). % 3x the default -start(Type, WriteFun, MangleArgFun) when is_function(WriteFun, 3), - is_function(MangleArgFun, 1) -> - start(Type, WriteFun, MangleArgFun, []); -start(Type, WriteFun, InitValue) -> - start(Type, WriteFun, id_fun(), InitValue). +%%%================================================================ -start(Type, WriteFun, MangleArgFun, InitValue) when is_function(WriteFun, 3), - is_function(MangleArgFun, 1) -> - cond_start(Type, WriteFun, MangleArgFun, InitValue), - dbg_ssh(Type). +-define(ALL_DBG_TYPES, get_all_dbg_types()). -%%%---------------------------------------------------------------- -fmt_fun(F) -> fun(Fmt,Args,Data) -> F(Fmt,Args), Data end. +start() -> start(fun io:format/2). -id_fun() -> fun(X) -> X end. +start(IoFmtFun) when is_function(IoFmtFun,2) ; is_function(IoFmtFun,3) -> + start_server(), + catch dbg:start(), + start_tracer(IoFmtFun), + dbg:p(all, get_all_trace_flags()), + ?ALL_DBG_TYPES. -%%%---------------------------------------------------------------- -dbg_ssh(What) -> - case [E || E <- lists:flatten(dbg_ssh0(What)), - element(1,E) =/= ok] of - [] -> ok; - Other -> Other - end. - - -dbg_ssh0(auth) -> - [dbg:tp(ssh_transport,hello_version_msg,1, x), - dbg:tp(ssh_transport,handle_hello_version,1, x), - dbg:tp(ssh_message,encode,1, x), - dbg:tpl(ssh_transport,select_algorithm,4, x), - dbg:tpl(ssh_connection_handler,ext_info,2, x), - lists:map(fun(F) -> dbg:tp(ssh_auth, F, x) end, - [publickey_msg, password_msg, keyboard_interactive_msg]) - ]; - -dbg_ssh0(algs) -> - [dbg:tpl(ssh_transport,select_algorithm,4, x), - dbg:tpl(ssh_connection_handler,ext_info,2, x) - ]; - -dbg_ssh0(hostkey) -> - [dbg:tpl(ssh_transport, verify_host_key, 4, x), - dbg:tp(ssh_transport, verify, 4, x), - dbg:tpl(ssh_transport, known_host_key, 3, x), -%% dbg:tpl(ssh_transport, accepted_host, 4, x), - dbg:tpl(ssh_transport, add_host_key, 4, x), - dbg:tpl(ssh_transport, is_host_key, 5, x) - ]; - -dbg_ssh0(msg) -> - [dbg_ssh0(hostkey), - dbg_ssh0(auth), - dbg:tp(ssh_message,encode,1, x), - dbg:tp(ssh_message,decode,1, x), - dbg:tpl(ssh_transport,select_algorithm,4, x), - dbg:tp(ssh_transport,hello_version_msg,1, x), - dbg:tp(ssh_transport,handle_hello_version,1, x), - dbg:tpl(ssh_connection_handler,ext_info,2, x) - ]. - - -%%%================================================================ -cond_start(Type, WriteFun, MangleArgFun, Init) -> +stop() -> try - dbg:start(), - setup_tracer(Type, WriteFun, MangleArgFun, Init), - dbg:p(new,[c,timestamp]) + dbg:stop_clear(), + gen_server:stop(?SERVER) catch _:_ -> ok end. +start_server() -> + gen_server:start({local,?SERVER}, ?MODULE, [], []). -msg_formater(msg, {trace_ts,Pid,call,{ssh_message,encode,[Msg]},TS}, D) -> - fmt("~n~s SEND ~p ~s~n", [ts(TS),Pid,wr_record(shrink_bin(Msg))], D); -msg_formater(msg, {trace_ts,_Pid,return_from,{ssh_message,encode,1},_Res,_TS}, D) -> - D; - -msg_formater(msg, {trace_ts,_Pid,call,{ssh_message,decode,_},_TS}, D) -> - D; -msg_formater(msg, {trace_ts,Pid,return_from,{ssh_message,decode,1},Msg,TS}, D) -> - Extra = - case Msg of - #ssh_msg_userauth_info_request{data = D0} -> - try ssh_message:decode_keyboard_interactive_prompts(D0, []) - of - Acc -> - io_lib:format(" -- decoded data:~n", []) ++ - element(1, - lists:mapfoldl( - fun({Prompt,Echo}, N) -> - {io_lib:format(" prompt[~p]: \"~s\" (echo=~p)~n",[N,Prompt,Echo]), N+1} - end, 1, Acc)) - catch - _:_ -> - "" - end; - _ -> - "" + +start_tracer() -> start_tracer(fun io:format/2). + +start_tracer(WriteFun) when is_function(WriteFun,2) -> + start_tracer(fun(F,A,S) -> WriteFun(F,A), S end); +start_tracer(WriteFun) when is_function(WriteFun,3) -> + start_tracer(WriteFun, undefined). + + +start_tracer(WriteFun, InitAcc) when is_function(WriteFun, 3) -> + Handler = + fun(Arg, Acc0) -> + try_all_types_in_all_modules(gen_server:call(?SERVER, get_on, ?CALL_TIMEOUT), + Arg, WriteFun, + Acc0) end, - fmt("~n~s ~p RECV ~s~s~n", [ts(TS),Pid,wr_record(shrink_bin(Msg)),Extra], D); - -msg_formater(_auth, {trace_ts,Pid,return_from,{ssh_message,decode,1},#ssh_msg_userauth_failure{authentications=As},TS}, D) -> - fmt("~n~s ~p Client login FAILURE. Try ~s~n", [ts(TS),Pid,As], D); - -msg_formater(_auth, {trace_ts,Pid,return_from,{ssh_message,decode,1},#ssh_msg_userauth_success{},TS}, D) -> - fmt("~n~s ~p Client login SUCCESS~n", [ts(TS),Pid], D); - - -msg_formater(_, {trace_ts,_Pid,call,{ssh_transport,select_algorithm,_},_TS}, D) -> - D; -msg_formater(_, {trace_ts,Pid,return_from,{ssh_transport,select_algorithm,_},{ok,Alg},TS}, D) -> - fmt("~n~s ~p ALGORITHMS~n~s~n", [ts(TS),Pid, wr_record(Alg)], D); - -msg_formater(_, {trace_ts,_Pid,call,{ssh_transport,hello_version_msg,_},_TS}, D) -> - D; -msg_formater(_, {trace_ts,Pid,return_from,{ssh_transport,hello_version_msg,1},Hello,TS}, D) -> - fmt("~n~s ~p TCP SEND HELLO~n ~p~n", [ts(TS),Pid,lists:flatten(Hello)], D); - -msg_formater(_, {trace_ts,Pid,call,{ssh_transport,handle_hello_version,[Hello]},TS}, D) -> - fmt("~n~s ~p RECV HELLO~n ~p~n", [ts(TS),Pid,lists:flatten(Hello)], D); -msg_formater(_, {trace_ts,_Pid,return_from,{ssh_transport,handle_hello_version,1},_,_TS}, D) -> - D; - -msg_formater(_, {trace_ts,Pid,call,{ssh_connection_handler,ext_info,[{"server-sig-algs",SigAlgs},State]},TS}, D) -> - try lists:keyfind(ssh, 1, tuple_to_list(State)) of - false -> - D; - #ssh{userauth_pubkeys = PKs} -> - fmt("~n~s ~p Client got suggestion to use user public key sig-algs~n ~p~n and can use~n ~p~n", - [ts(TS),Pid,string:tokens(SigAlgs,","),PKs], D) - catch - _:_ -> - D - end; - -msg_formater(_, {trace_ts,Pid,return_from,{ssh_connection_handler,ext_info,2},State,TS}, D) -> - try lists:keyfind(ssh, 1, tuple_to_list(State)) of - false -> - D; - #ssh{userauth_pubkeys = PKs} -> - fmt("~n~s ~p Client will try user public key sig-algs~n ~p~n", [ts(TS),Pid,PKs], D) - catch - _:_ -> - D - end; - -msg_formater(_, {trace_ts,Pid,call, {ssh_transport,verify_host_key,[_Ssh,_PK,_Dgst,{AlgStr,_Sign}]},TS}, D) -> - fmt("~n~s ~p Client got a ~s hostkey. Will try to verify it~n", [ts(TS),Pid,AlgStr], D); -msg_formater(_, {trace_ts,Pid,return_from, {ssh_transport,verify_host_key,4}, Result, TS}, D) -> - case Result of - ok -> fmt("~n~s ~p Hostkey verified.~n", [ts(TS),Pid], D); - {error,E} -> - fmt("~n~s ~p ***** Hostkey NOT verified: ~p ******!~n", [ts(TS),Pid,E], D); - _ -> fmt("~n~s ~p ***** Hostkey is NOT verified: ~p ******!~n", [ts(TS),Pid,Result], D) - end; - -msg_formater(_, {trace_ts,Pid,return_from, {ssh_transport,verify,4}, Result, TS}, D) -> - case Result of - true -> D; - _ -> fmt("~n~s ~p Couldn't verify the signature!~n", [ts(TS),Pid], D) - end; - -msg_formater(_, {trace_ts,_Pid,call, {ssh_transport,is_host_key,_}, _TS}, D) -> D; -msg_formater(_, {trace_ts,Pid,return_from, {ssh_transport,is_host_key,5}, {CbMod,Result}, TS}, D) -> - case Result of - true -> fmt("~n~s ~p Hostkey found by ~p.~n", [ts(TS),Pid,CbMod], D); - _ -> fmt("~n~s ~p Hostkey NOT found by ~p.~n", [ts(TS),Pid,CbMod], D) - end; - -msg_formater(_, {trace_ts,_Pid,call, {ssh_transport,add_host_key,_}, _TS}, D) -> D; -msg_formater(_, {trace_ts,Pid,return_from, {ssh_transport,add_host_key,4}, {CbMod,Result}, TS}, D) -> - case Result of - ok -> fmt("~n~s ~p New hostkey added by ~p.~n", [ts(TS),Pid,CbMod], D); - _ -> D - end; - -msg_formater(_, {trace_ts,_Pid,call,{ssh_transport,known_host_key,_},_TS}, D) -> D; -msg_formater(_, {trace_ts,Pid,return_from, {ssh_transport,known_host_key,3}, Result, TS}, D) -> - case Result of - ok -> D; - {error,E} -> fmt("~n~s ~p Hostkey addition failed: ~p~n", [ts(TS),Pid,E], D); - _ -> fmt("~n~s ~p Hostkey addition: ~p~n", [ts(TS),Pid,Result], D) - end; - -msg_formater(_, {trace_ts,Pid,call,{ssh_auth,publickey_msg,[[SigAlg,#ssh{user=User}]]},TS}, D) -> - fmt("~n~s ~p Client will try to login user ~p with method: public key algorithm ~p~n", [ts(TS),Pid,User,SigAlg], D); -msg_formater(_, {trace_ts,Pid,return_from,{ssh_auth,publickey_msg,1},{not_ok,#ssh{user=User}},TS}, D) -> - fmt("~s ~p User ~p can't use that kind of public key~n", [ts(TS),Pid,User], D); -msg_formater(_, {trace_ts,_Pid,return_from,{ssh_auth,publickey_msg,1},_,_TS}, D) -> D; - -msg_formater(_, {trace_ts,Pid,call,{ssh_auth,password_msg,[[#ssh{user=User}]]},TS}, D) -> - fmt("~n~s ~p Client will try to login user ~p with method: password~n", [ts(TS),Pid,User], D); -msg_formater(_, {trace_ts,Pid,return_from,{ssh_auth,password_msg,1},{not_ok,#ssh{user=User}},TS}, D) -> - fmt("~s ~p User ~p can't use method password as login method~n", [ts(TS),Pid,User], D); -msg_formater(_, {trace_ts,_Pid,return_from,{ssh_auth,password_msg,1},_Result,_TS}, D) -> D; - -msg_formater(_, {trace_ts,Pid,call,{ssh_auth,keyboard_interactive_msg,[[#ssh{user=User}]]},TS}, D) -> - fmt("~n~s ~p Client will try to login user ~p with method: keyboard-interactive~n", [ts(TS),Pid,User], D); -msg_formater(_, {trace_ts,Pid,return_from,{ssh_auth,keyboard_interactive_msg,1},{not_ok,#ssh{user=User}},TS}, D) -> - fmt("~s ~p User ~p can't use method keyboard-interactive as login method~n", [ts(TS),Pid,User], D); -msg_formater(_, {trace_ts,_Pid,return_from,{ssh_auth,keyboard_interactive_msg,1},_Result,_TS}, D) -> D; - -msg_formater(msg, {trace_ts,Pid,send,{tcp,Sock,Bytes},Pid,TS}, D) -> - fmt("~n~s ~p TCP SEND on ~p~n ~p~n", [ts(TS),Pid,Sock, shrink_bin(Bytes)], D); - -msg_formater(msg, {trace_ts,Pid,send,{tcp,Sock,Bytes},Dest,TS}, D) -> - fmt("~n~s ~p TCP SEND from ~p TO ~p~n ~p~n", [ts(TS),Pid,Sock,Dest, shrink_bin(Bytes)], D); - -msg_formater(msg, {trace_ts,Pid,send,ErlangMsg,Dest,TS}, D) -> - fmt("~n~s ~p ERL MSG SEND TO ~p~n ~p~n", [ts(TS),Pid,Dest, shrink_bin(ErlangMsg)], D); - - -msg_formater(msg, {trace_ts,Pid,'receive',{tcp,Sock,Bytes},TS}, D) -> - fmt("~n~s ~p TCP RECEIVE on ~p~n ~p~n", [ts(TS),Pid,Sock,shrink_bin(Bytes)], D); - -msg_formater(msg, {trace_ts,Pid,'receive',ErlangMsg,TS}, D) -> - fmt("~n~s ~p ERL MSG RECEIVE~n ~p~n", [ts(TS),Pid,shrink_bin(ErlangMsg)], D); - - -msg_formater(_, _M, D) -> - fmt("~nDBG other ~n~p~n", [shrink_bin(_M)], D), - D. + dbg:tracer(process, {Handler,InitAcc}). %%%---------------------------------------------------------------- --record(data, {writer, - initialized, - acc}). - -fmt(Fmt, Args, D=#data{initialized=false}) -> - fmt(Fmt, Args, - D#data{acc = (D#data.writer)("~s~n", [initial_info()], D#data.acc), - initialized = true} - ); -fmt(Fmt, Args, D=#data{writer=Write, acc=Acc}) -> - D#data{acc = Write(Fmt,Args,Acc)}. - -ts({_,_,Usec}=Now) -> - {_Date,{HH,MM,SS}} = calendar:now_to_local_time(Now), - io_lib:format("~.2.0w:~.2.0w:~.2.0w.~.6.0w",[HH,MM,SS,Usec]); -ts(_) -> - "-". - -setup_tracer(Type, WriteFun, MangleArgFun, Init) -> - Handler = fun(Arg, D) -> - msg_formater(Type, MangleArgFun(Arg), D) - end, - InitialData = #data{writer = WriteFun, - initialized = false, - acc = Init}, - {ok,_} = dbg:tracer(process, {Handler, InitialData}), - ok. +on() -> on(?ALL_DBG_TYPES). +on(Type) -> switch(on, Type). -initial_info() -> - Lines = - [ts(erlang:timestamp()), - "", - "SSH:"] - ++ as_list_of_lines(case application:get_key(ssh,vsn) of - {ok,Vsn} -> Vsn; - _ -> "(ssh not started)" - end) - ++ ["", - "Cryptolib:"] - ++ as_list_of_lines(crypto:info_lib()) - ++ ["", - "Crypto app:"] - ++ as_list_of_lines(crypto:supports()), - W = max_len(Lines), - append_lines([line_of($*, W+4)] - ++ prepend_lines("* ", Lines) - ++ [line_of($-, W+4)], - io_lib:nl() - ). - +off() -> off(?ALL_DBG_TYPES). % A bit overkill... +off(Type) -> switch(off, Type). -as_list_of_lines(Term) -> - prepend_lines(" ", - string:tokens(lists:flatten(io_lib:format("~p",[Term])), - io_lib:nl() % Get line endings in current OS - ) - ). - -line_of(Char,W) -> lists:duplicate(W,Char). -max_len(L) -> lists:max([length(S) || S<-L]). -append_lines(L, X) -> [S++X || S<-L]. -prepend_lines(X, L) -> [X++S || S<-L]. +go_on() -> + IsOn = gen_server:call(?SERVER, get_on, ?CALL_TIMEOUT), + on(IsOn). %%%---------------------------------------------------------------- shrink_bin(B) when is_binary(B), size(B)>256 -> {'*** SHRINKED BIN', @@ -365,69 +145,370 @@ shrink_bin(L) when is_list(L) -> lists:map(fun shrink_bin/1, L); shrink_bin(T) when is_tuple(T) -> list_to_tuple(shrink_bin(tuple_to_list(T))); shrink_bin(X) -> X. +%%%---------------------------------------------------------------- +%% Replace last element (the state) with "#<state-name>{}" +reduce_state(T) -> + try + erlang:setelement(size(T), + T, + lists:concat(['#',element(1,element(size(T),T)),'{}']) + ) + catch + _:_ -> + T + end. + +%%%================================================================ +-record(data, { + types_on = [] + }). + %%%---------------------------------------------------------------- --define(wr_record(N,BlackList), wr_record(R=#N{}) -> wr_record(R, record_info(fields,N), BlackList)). - --define(wr_record(N), ?wr_record(N, [])). - - -?wr_record(alg); - -?wr_record(ssh_msg_disconnect); -?wr_record(ssh_msg_ignore); -?wr_record(ssh_msg_unimplemented); -?wr_record(ssh_msg_debug); -?wr_record(ssh_msg_service_request); -?wr_record(ssh_msg_service_accept); -?wr_record(ssh_msg_kexinit); -?wr_record(ssh_msg_kexdh_init); -?wr_record(ssh_msg_kexdh_reply); -?wr_record(ssh_msg_newkeys); -?wr_record(ssh_msg_ext_info); -?wr_record(ssh_msg_kex_dh_gex_request); -?wr_record(ssh_msg_kex_dh_gex_request_old); -?wr_record(ssh_msg_kex_dh_gex_group); -?wr_record(ssh_msg_kex_dh_gex_init); -?wr_record(ssh_msg_kex_dh_gex_reply); -?wr_record(ssh_msg_kex_ecdh_init); -?wr_record(ssh_msg_kex_ecdh_reply); - -?wr_record(ssh_msg_userauth_request); -?wr_record(ssh_msg_userauth_failure); -?wr_record(ssh_msg_userauth_success); -?wr_record(ssh_msg_userauth_banner); -?wr_record(ssh_msg_userauth_passwd_changereq); -?wr_record(ssh_msg_userauth_pk_ok); -?wr_record(ssh_msg_userauth_info_request); -?wr_record(ssh_msg_userauth_info_response); - -?wr_record(ssh_msg_global_request); -?wr_record(ssh_msg_request_success); -?wr_record(ssh_msg_request_failure); -?wr_record(ssh_msg_channel_open); -?wr_record(ssh_msg_channel_open_confirmation); -?wr_record(ssh_msg_channel_open_failure); -?wr_record(ssh_msg_channel_window_adjust); -?wr_record(ssh_msg_channel_data); -?wr_record(ssh_msg_channel_extended_data); -?wr_record(ssh_msg_channel_eof); -?wr_record(ssh_msg_channel_close); -?wr_record(ssh_msg_channel_request); -?wr_record(ssh_msg_channel_success); -?wr_record(ssh_msg_channel_failure); - -wr_record(R) -> io_lib:format('~p~n',[R]). +init(_) -> + {ok, #data{}}. + +%%%---------------------------------------------------------------- +handle_call({switch,on,Types}, _From, D) -> + NowOn = lists:usort(Types ++ D#data.types_on), + call_modules(on, Types, NowOn), + {reply, {ok,NowOn}, D#data{types_on = NowOn}}; + +handle_call({switch,off,Types}, _From, D) -> + StillOn = D#data.types_on -- Types, + call_modules(off, Types, StillOn), + call_modules(on, StillOn, StillOn), + {reply, {ok,StillOn}, D#data{types_on = StillOn}}; + +handle_call(get_on, _From, D) -> + {reply, D#data.types_on, D}; + +handle_call(C, _From, D) -> + io:format('*** Unknown call: ~p~n',[C]), + {reply, {error,{unknown_call,C}}, D}. + +handle_cast(C, D) -> + io:format('*** Unknown cast: ~p~n',[C]), + {noreply, D}. + +handle_info(C, D) -> + io:format('*** Unknown info: ~p~n',[C]), + {noreply, D}. + + +%%%================================================================ + +%%%---------------------------------------------------------------- +ssh_modules_with_trace() -> + {ok,AllSshModules} = application:get_key(ssh, modules), + [M || M <- AllSshModules, + lists:member({dbg_trace,3}, M:module_info(exports))]. + +%%%---------------------------------------------------------------- +get_all_trace_flags() -> + get_all_trace_flags(ssh_modules_with_trace()). + +get_all_trace_flags(Modules) -> + lists:usort( + lists:flatten( + lists:foldl( + fun(Type, Acc) -> + call_modules(flags, Type, undefined, Acc, Modules) + end, [timestamp], ?ALL_DBG_TYPES))). + +%%%---------------------------------------------------------------- +get_all_dbg_types() -> + lists:usort( + lists:flatten( + call_modules(points, undefined) )). + +%%%---------------------------------------------------------------- +call_modules(Cmnd, Type) -> + call_modules(Cmnd, Type, undefined). + +call_modules(Cmnd, Type, Arg) -> + call_modules(Cmnd, Type, Arg, []). + +call_modules(Cmnd, Type, Arg, Acc0) -> + call_modules(Cmnd, Type, Arg, Acc0, ssh_modules_with_trace()). + +call_modules(Cmnd, Types, Arg, Acc0, Modules) when is_list(Types) -> + lists:foldl( + fun(Type, Acc) -> + call_modules(Cmnd, Type, Arg, Acc, Modules) + end, Acc0, Types); + +call_modules(Cmnd, Type, Arg, Acc0, Modules) -> + lists:foldl( + fun(Mod, Acc) -> + try Mod:dbg_trace(Cmnd, Type, Arg) + of + Result -> [Result|Acc] + catch + _:_ -> Acc + end + end, Acc0, Modules). +%%%---------------------------------------------------------------- +switch(X, Type) when is_atom(Type) -> + switch(X, [Type]); + +switch(X, Types) when is_list(Types) -> + case whereis(?SERVER) of + undefined -> + start(); + _ -> + ok + end, + case lists:usort(Types) -- ?ALL_DBG_TYPES of + [] -> + gen_server:call(?SERVER, {switch,X,Types}, ?CALL_TIMEOUT); + L -> + {error, {unknown, L}} + end. + +%%%---------------------------------------------------------------- +%%% Format of trace messages are described in reference manual for erlang:trace/4 +%%% {call,MFA} +%%% {return_from,{M,F,N},Result} +%%% {send,Msg,To} +%%% {'receive',Msg} + +trace_pid({trace,Pid,_}) -> Pid; +trace_pid({trace,Pid,_,_}) -> Pid; +trace_pid({trace,Pid,_,_,_}) -> Pid; +trace_pid({trace,Pid,_,_,_,_}) -> Pid; +trace_pid({trace,Pid,_,_,_,_,_}) -> Pid; +trace_pid({trace_ts,Pid,_,_TS}) -> Pid; +trace_pid({trace_ts,Pid,_,_,_TS}) -> Pid; +trace_pid({trace_ts,Pid,_,_,_,_TS}) -> Pid; +trace_pid({trace_ts,Pid,_,_,_,_,_TS}) -> Pid; +trace_pid({trace_ts,Pid,_,_,_,_,_,_TS}) -> Pid. + +trace_ts({trace_ts,_Pid,_,TS}) -> ts(TS); +trace_ts({trace_ts,_Pid,_,_,TS}) -> ts(TS); +trace_ts({trace_ts,_Pid,_,_,_,TS}) -> ts(TS); +trace_ts({trace_ts,_Pid,_,_,_,_,TS}) -> ts(TS); +trace_ts({trace_ts,_Pid,_,_,_,_,_,TS}) -> ts(TS); +trace_ts(_) -> "-". + +trace_info({trace,_Pid,A}) -> A; +trace_info({trace,_Pid,A,B}) -> {A,B}; +trace_info({trace,_Pid,A,B,C}) -> {A,B,C}; +trace_info({trace,_Pid,A,B,C,D}) -> {A,B,C,D}; +trace_info({trace,_Pid,A,B,C,D,E}) -> {A,B,C,D,E}; +trace_info({trace_ts,_Pid,A,_TS}) -> A; +trace_info({trace_ts,_Pid,A,B,_TS}) -> {A,B}; +trace_info({trace_ts,_Pid,A,B,C,_TS}) -> {A,B,C}; +trace_info({trace_ts,_Pid,A,B,C,D,_TS}) -> {A,B,C,D}; +trace_info({trace_ts,_Pid,A,B,C,D,E,_TS}) -> {A,B,C,D,E}. + + +try_all_types_in_all_modules(TypesOn, Arg, WriteFun, Acc0) -> + SshModules = ssh_modules_with_trace(), + TS = trace_ts(Arg), + PID = trace_pid(Arg), + INFO = trace_info(Arg), + lists:foldl( + fun(Type, Acc1) -> + lists:foldl( + fun(SshMod,Acc) -> + try WriteFun("~n~s ~p ~s~n", + [lists:flatten(TS), PID, lists:flatten(SshMod:dbg_trace(format,Type,INFO))], + Acc) + catch + _:_ -> Acc + end + end, Acc1, SshModules) + end, Acc0, TypesOn). + +%%%---------------------------------------------------------------- wr_record(T, Fs, BL) when is_tuple(T) -> wr_record(tuple_to_list(T), Fs, BL); -wr_record([Name|Values], Fields, BlackL) -> +wr_record([_Name|Values], Fields, BlackL) -> W = case Fields of [] -> 0; _ -> lists:max([length(atom_to_list(F)) || F<-Fields]) end, - [io_lib:format("~p:~n",[string:to_upper(atom_to_list(Name))]) - | [io_lib:format(" ~*p: ~p~n",[W,Tag,Value]) || {Tag,Value} <- lists:zip(Fields,Values), - not lists:member(Tag,BlackL) - ] + [io_lib:format(" ~*p: ~p~n",[W,Tag,Value]) || {Tag,Value} <- lists:zip(Fields,Values), + not lists:member(Tag,BlackL) ]. + +%%%---------------------------------------------------------------- +ts({_,_,Usec}=Now) when is_integer(Usec) -> + {_Date,{HH,MM,SS}} = calendar:now_to_local_time(Now), + io_lib:format("~.2.0w:~.2.0w:~.2.0w.~.6.0w",[HH,MM,SS,Usec]); +ts(_) -> + "-". + +%%%================================================================ +-define(CIRC_BUF, circ_buf). + +cbuf_start() -> + cbuf_start(20). + +cbuf_start(CbufMaxLen) -> + put(?CIRC_BUF, {CbufMaxLen,queue:new()}), + ok. + + +cbuf_stop_clear() -> + case erase(?CIRC_BUF) of + undefined -> + []; + {_CbufMaxLen,Queue} -> + queue:to_list(Queue) + end. + + +cbuf_in(Value) -> + case get(?CIRC_BUF) of + undefined -> + disabled; + {CbufMaxLen,Queue} -> + UpdatedQueue = + try queue:head(Queue) of + {Value, TS0, Cnt0} -> + %% Same Value as last saved in the queue + queue:in_r({Value, TS0, Cnt0+1}, + queue:drop(Queue) + ); + _ -> + queue:in_r({Value, erlang:timestamp(), 1}, + truncate_cbuf(Queue, CbufMaxLen) + ) + catch + error:empty -> + queue:in_r({Value, erlang:timestamp(), 1}, Queue) + end, + put(?CIRC_BUF, {CbufMaxLen,UpdatedQueue}), + ok + end. + + +cbuf_list() -> + case get(?CIRC_BUF) of + undefined -> + []; + {_CbufMaxLen,Queue} -> + queue:to_list(Queue) + end. + + +truncate_cbuf(Q, CbufMaxLen) -> + case queue:len(Q) of + N when N>=CbufMaxLen -> + truncate_cbuf(element(2,queue:out_r(Q)), CbufMaxLen); + _ -> + Q + end. + +fmt_cbuf_items() -> + lists:flatten( + io_lib:format("Circular trace buffer. Latest item first.~n~s~n", + [case get(?CIRC_BUF) of + {Max,_} -> + L = cbuf_list(), + [io_lib:format("==== ~.*w: ~s~n",[num_digits(Max),N,fmt_cbuf_item(X)]) || + {N,X} <- lists:zip(lists:seq(1,length(L)), L) + ]; + _ -> + io_lib:format("Not started.~n",[]) + end])). + + +num_digits(0) -> 1; +num_digits(N) when N>0 -> 1+trunc(math:log10(N)). + + +fmt_cbuf_item({Value, TimeStamp, N}) -> + io_lib:format("~s~s~n~s~n", + [fmt_ts(TimeStamp), + [io_lib:format(" (Repeated ~p times)",[N]) || N>1], + fmt_value(Value)]). + + +fmt_ts(TS = {_,_,Us}) -> + {{YY,MM,DD},{H,M,S}} = calendar:now_to_universal_time(TS), + io_lib:format("~w-~.2.0w-~.2.0w ~.2.0w:~.2.0w:~.2.0w.~.6.0w UTC",[YY,MM,DD,H,M,S,Us]). + +fmt_value(#circ_buf_entry{module = M, + line = L, + function = {F,A}, + pid = Pid, + value = V}) -> + io_lib:format("~p:~p ~p/~p ~p~n~s",[M,L,F,A,Pid,fmt_value(V)]); +fmt_value(Value) -> + io_lib:format("~p",[Value]). + +%%%================================================================ + +-record(h, {max_bytes = 65536, + bytes_per_line = 16, + address_len = 4 + }). + + +hex_dump(Data) -> hex_dump1(Data, hd_opts([])). + +hex_dump(X, Max) when is_integer(Max) -> + hex_dump(X, [{max_bytes,Max}]); +hex_dump(X, OptList) when is_list(OptList) -> + hex_dump1(X, hd_opts(OptList)). + +hex_dump1(B, Opts) when is_binary(B) -> hex_dump1(binary_to_list(B), Opts); +hex_dump1(L, Opts) when is_list(L), length(L) > Opts#h.max_bytes -> + io_lib:format("~s---- skip ~w bytes----~n", [hex_dump1(lists:sublist(L,Opts#h.max_bytes), Opts), + length(L) - Opts#h.max_bytes + ]); +hex_dump1(L, Opts0) when is_list(L) -> + Opts = Opts0#h{address_len = num_hex_digits(Opts0#h.max_bytes)}, + Result = hex_dump(L, [{0,[],[]}], Opts), + [io_lib:format("~*.s | ~*s | ~s~n" + "~*.c-+-~*c-+-~*c~n", + [Opts#h.address_len, lists:sublist("Address",Opts#h.address_len), + -3*Opts#h.bytes_per_line, lists:sublist("Hexdump",3*Opts#h.bytes_per_line), + "ASCII", + Opts#h.address_len, $-, + 3*Opts#h.bytes_per_line, $-, + Opts#h.bytes_per_line, $- + ]) | + [io_lib:format("~*.16.0b | ~s~*c | ~s~n",[Opts#h.address_len, N*Opts#h.bytes_per_line, + lists:reverse(Hexs), + 3*(Opts#h.bytes_per_line-length(Hexs)), $ , + lists:reverse(Chars)]) + || {N,Hexs,Chars} <- lists:reverse(Result) + ] + ]. + + +hd_opts(L) -> lists:foldl(fun hd_opt/2, #h{}, L). + +hd_opt({max_bytes,M}, O) -> O#h{max_bytes=M}; +hd_opt({bytes_per_line,M}, O) -> O#h{bytes_per_line=M}. + + +num_hex_digits(N) when N<16 -> 1; +num_hex_digits(N) -> trunc(math:ceil(math:log2(N)/4)). + + +hex_dump([L|Cs], Result0, Opts) when is_list(L) -> + Result = hex_dump(L,Result0, Opts), + hex_dump(Cs, Result, Opts); + +hex_dump(Cs, [{N0,_,Chars}|_]=Lines, Opts) when length(Chars) == Opts#h.bytes_per_line -> + hex_dump(Cs, [{N0+1,[],[]}|Lines], Opts); + +hex_dump([C|Cs], [{N,Hexs,Chars}|Lines], Opts) -> + Asc = if + 16#20 =< C,C =< 16#7E -> C; + true -> $. + end, + Hex = io_lib:format("~2.16.0b ", [C]), + hex_dump(Cs, [{N, [Hex|Hexs], [Asc|Chars]} | Lines], Opts); + +hex_dump([], Result, _) -> + Result. + + + diff --git a/lib/ssh/src/ssh_dbg.hrl b/lib/ssh/src/ssh_dbg.hrl deleted file mode 100644 index e94664737b..0000000000 --- a/lib/ssh/src/ssh_dbg.hrl +++ /dev/null @@ -1,27 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2004-2016. All Rights Reserved. -%% -%% Licensed under the Apache License, Version 2.0 (the "License"); -%% you may not use this file except in compliance with the License. -%% You may obtain a copy of the License at -%% -%% http://www.apache.org/licenses/LICENSE-2.0 -%% -%% Unless required by applicable law or agreed to in writing, software -%% distributed under the License is distributed on an "AS IS" BASIS, -%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -%% See the License for the specific language governing permissions and -%% limitations under the License. -%% -%% %CopyrightEnd% -%% - --ifndef(SSH_DBG_HRL). --define(SSH_DBG_HRL, 1). - --define(formatrec(RecName,R), - ssh_dbg:wr_record(R, record_info(fields,RecName), [])). - --endif. % SSH_DBG_HRL defined diff --git a/lib/ssh/src/ssh_file.erl b/lib/ssh/src/ssh_file.erl index 33792da38f..510269bbb1 100644 --- a/lib/ssh/src/ssh_file.erl +++ b/lib/ssh/src/ssh_file.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2005-2017. All Rights Reserved. +%% Copyright Ericsson AB 2005-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -39,32 +39,29 @@ is_auth_key/3]). --define(PERM_700, 8#700). --define(PERM_644, 8#644). - - -%%% API +-export_type([system_dir_daemon_option/0, + user_dir_common_option/0, + user_dir_fun_common_option/0, + pubkey_passphrase_client_options/0 + ]). -%%% client --spec add_host_key(string(), - public_key:public_key(), - proplists:proplist()) -> ok | {error,term()}. +-type system_dir_daemon_option() :: {system_dir, string()}. +-type user_dir_common_option() :: {user_dir, string()}. +-type user_dir_fun_common_option() :: {user_dir_fun, user2dir()}. +-type user2dir() :: fun((RemoteUserName::string()) -> UserDir :: string()) . --spec is_host_key(public_key:public_key(), - string(), - ssh_client_key_api:algorithm(), - proplists:proplist()) -> boolean(). +-type pubkey_passphrase_client_options() :: {dsa_pass_phrase, string()} + | {rsa_pass_phrase, string()} +%% Not yet implemented: | {ed25519_pass_phrase, string()} +%% Not yet implemented: | {ed448_pass_phrase, string()} + | {ecdsa_pass_phrase, string()} . --spec user_key(ssh_client_key_api:algorithm(), - proplists:proplist()) -> {ok, public_key:private_key()} | {error,term()}. -%%% server --spec host_key(ssh_server_key_api:algorithm(), - proplists:proplist()) -> {ok, public_key:private_key()} | {error,term()}. +-define(PERM_700, 8#700). +-define(PERM_644, 8#644). --spec is_auth_key(public_key:public_key(), - string(), proplists:proplist()) -> boolean(). +%%% API %% Used by server host_key(Algorithm, Opts) -> @@ -124,6 +121,8 @@ file_base_name('ssh-dss' ) -> "ssh_host_dsa_key"; file_base_name('ecdsa-sha2-nistp256') -> "ssh_host_ecdsa_key"; file_base_name('ecdsa-sha2-nistp384') -> "ssh_host_ecdsa_key"; file_base_name('ecdsa-sha2-nistp521') -> "ssh_host_ecdsa_key"; +file_base_name('ssh-ed25519' ) -> "ssh_host_ed25519_key"; +file_base_name('ssh-ed448' ) -> "ssh_host_ed448_key"; file_base_name(_ ) -> "ssh_host_key". decode(File, Password) -> @@ -261,6 +260,8 @@ identity_key_filename('ssh-rsa' ) -> "id_rsa"; identity_key_filename('rsa-sha2-256' ) -> "id_rsa"; identity_key_filename('rsa-sha2-384' ) -> "id_rsa"; identity_key_filename('rsa-sha2-512' ) -> "id_rsa"; +identity_key_filename('ssh-ed25519' ) -> "id_ed25519"; +identity_key_filename('ssh-ed448' ) -> "id_ed448"; identity_key_filename('ecdsa-sha2-nistp256') -> "id_ecdsa"; identity_key_filename('ecdsa-sha2-nistp384') -> "id_ecdsa"; identity_key_filename('ecdsa-sha2-nistp521') -> "id_ecdsa". @@ -270,9 +271,12 @@ identity_pass_phrase("ssh-rsa" ) -> rsa_pass_phrase; identity_pass_phrase("rsa-sha2-256" ) -> rsa_pass_phrase; identity_pass_phrase("rsa-sha2-384" ) -> rsa_pass_phrase; identity_pass_phrase("rsa-sha2-512" ) -> rsa_pass_phrase; +%% Not yet implemented: identity_pass_phrase("ssh-ed25519" ) -> ed25519_pass_phrase; +%% Not yet implemented: identity_pass_phrase("ssh-ed448" ) -> ed448_pass_phrase; identity_pass_phrase("ecdsa-sha2-"++_) -> ecdsa_pass_phrase; identity_pass_phrase(P) when is_atom(P) -> - identity_pass_phrase(atom_to_list(P)). + identity_pass_phrase(atom_to_list(P)); +identity_pass_phrase(_) -> undefined. lookup_host_key_fd(Fd, KeyToMatch, Host, KeyType) -> case io:get_line(Fd, '') of @@ -322,6 +326,10 @@ key_match({#'ECPoint'{},{namedCurve,Curve}}, Alg) -> _ -> false end; +key_match({ed_pub,ed25519,_}, 'ssh-ed25519') -> + true; +key_match({ed_pub,ed448,_}, 'ssh-ed448') -> + true; key_match(_, _) -> false. diff --git a/lib/ssh/src/ssh_info.erl b/lib/ssh/src/ssh_info.erl index d464def6fa..79cd95e422 100644 --- a/lib/ssh/src/ssh_info.erl +++ b/lib/ssh/src/ssh_info.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2016. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -140,15 +140,15 @@ print_system_sup({{ssh_acceptor_sup,_LocalHost,_LocalPort,_Profile}, Pid, superv -print_channels({{server,ssh_channel_sup,_,_},Pid,supervisor,[ssh_channel_sup]}) when is_pid(Pid) -> +print_channels({{server,ssh_server_channel_sup,_,_},Pid,supervisor,[ssh_server_channel_sup]}) when is_pid(Pid) -> Children = supervisor:which_children(Pid), - ChannelPids = [P || {R,P,worker,[ssh_channel]} <- Children, + ChannelPids = [P || {R,P,worker,[ssh_server_channel]} <- Children, is_pid(P), is_reference(R)], case ChannelPids of [] -> io_lib:format(?INDENT?INDENT"No channels~n",[]); [Ch1Pid|_] -> - {{ConnManager,_}, _Str} = ssh_channel:get_print_info(Ch1Pid), + {{ConnManager,_}, _Str} = ssh_server_channel:get_print_info(Ch1Pid), {{_,Remote},_} = ssh_connection_handler:get_print_info(ConnManager), [io_lib:format(?INDENT?INDENT"Remote: ~s ConnectionRef = ~p~n",[fmt_host_port(Remote),ConnManager]), lists:map(fun print_ch/1, ChannelPids) @@ -159,7 +159,7 @@ print_channels({{server,ssh_connection_sup,_,_},Pid,supervisor,[ssh_connection_s print_ch(Pid) -> try - {{ConnManager,ChannelID}, Str} = ssh_channel:get_print_info(Pid), + {{ConnManager,ChannelID}, Str} = ssh_server_channel:get_print_info(Pid), {_LocalRemote,StrM} = ssh_connection_handler:get_print_info(ConnManager), io_lib:format(?INDENT?INDENT?INDENT"ch ~p ~p: ~s ~s~n",[ChannelID, Pid, StrM, Str]) catch diff --git a/lib/ssh/src/ssh_message.erl b/lib/ssh/src/ssh_message.erl index eb06f05a4a..d95e58c1bb 100644 --- a/lib/ssh/src/ssh_message.erl +++ b/lib/ssh/src/ssh_message.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2013-2017. All Rights Reserved. +%% Copyright Ericsson AB 2013-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -32,6 +32,8 @@ -export([encode/1, decode/1, decode_keyboard_interactive_prompts/2]). +-export([dbg_trace/3]). + -define('2bin'(X), (if is_binary(X) -> X; is_list(X) -> list_to_binary(X); X==undefined -> <<>> @@ -287,12 +289,12 @@ encode(#ssh_msg_kex_dh_gex_reply{ <<?Ebyte(?SSH_MSG_KEX_DH_GEX_REPLY), ?Ebinary(EncKey), ?Empint(F), ?Ebinary(EncSign)>>; encode(#ssh_msg_kex_ecdh_init{q_c = Q_c}) -> - <<?Ebyte(?SSH_MSG_KEX_ECDH_INIT), ?Empint(Q_c)>>; + <<?Ebyte(?SSH_MSG_KEX_ECDH_INIT), ?Ebinary(Q_c)>>; encode(#ssh_msg_kex_ecdh_reply{public_host_key = {Key,SigAlg}, q_s = Q_s, h_sig = Sign}) -> EncKey = public_key:ssh_encode(Key, ssh2_pubkey), EncSign = encode_signature(Key, SigAlg, Sign), - <<?Ebyte(?SSH_MSG_KEX_ECDH_REPLY), ?Ebinary(EncKey), ?Empint(Q_s), ?Ebinary(EncSign)>>; + <<?Ebyte(?SSH_MSG_KEX_ECDH_REPLY), ?Ebinary(EncKey), ?Ebinary(Q_s), ?Ebinary(EncSign)>>; encode(#ssh_msg_ignore{data = Data}) -> <<?Ebyte(?SSH_MSG_IGNORE), ?Estring_utf8(Data)>>; @@ -502,13 +504,13 @@ decode(<<?BYTE(?SSH_MSG_KEX_DH_GEX_REPLY), ?DEC_BIN(Key,__0), ?DEC_MPINT(F,__1), h_sig = decode_signature(Hashsign) }; -decode(<<"ecdh",?BYTE(?SSH_MSG_KEX_ECDH_INIT), ?DEC_MPINT(Q_c,__0)>>) -> +decode(<<"ecdh",?BYTE(?SSH_MSG_KEX_ECDH_INIT), ?DEC_BIN(Q_c,__0)>>) -> #ssh_msg_kex_ecdh_init{ q_c = Q_c }; decode(<<"ecdh",?BYTE(?SSH_MSG_KEX_ECDH_REPLY), - ?DEC_BIN(Key,__1), ?DEC_MPINT(Q_s,__2), ?DEC_BIN(Sig,__3)>>) -> + ?DEC_BIN(Key,__1), ?DEC_BIN(Q_s,__2), ?DEC_BIN(Sig,__3)>>) -> #ssh_msg_kex_ecdh_reply{ public_host_key = public_key:ssh_decode(Key, ssh2_pubkey), q_s = Q_s, @@ -609,5 +611,94 @@ encode_signature({_, #'Dss-Parms'{}}, _SigAlg, Signature) -> <<?Ebinary(<<"ssh-dss">>), ?Ebinary(Signature)>>; encode_signature({#'ECPoint'{}, {namedCurve,OID}}, _SigAlg, Signature) -> CurveName = public_key:oid2ssh_curvename(OID), - <<?Ebinary(<<"ecdsa-sha2-",CurveName/binary>>), ?Ebinary(Signature)>>. + <<?Ebinary(<<"ecdsa-sha2-",CurveName/binary>>), ?Ebinary(Signature)>>; +encode_signature({ed_pub, ed25519,_}, _SigAlg, Signature) -> + <<?Ebinary(<<"ssh-ed25519">>), ?Ebinary(Signature)>>; +encode_signature({ed_pub, ed448,_}, _SigAlg, Signature) -> + <<?Ebinary(<<"ssh-ed448">>), ?Ebinary(Signature)>>. + + + +%%%################################################################ +%%%# +%%%# Tracing +%%%# + +dbg_trace(points, _, _) -> [ssh_messages, raw_messages]; + +dbg_trace(flags, ssh_messages, _) -> [c]; +dbg_trace(on, ssh_messages, _) -> dbg:tp(?MODULE,encode,1,x), + dbg:tp(?MODULE,decode,1,x); +dbg_trace(off, ssh_messages, _) -> dbg:ctpg(?MODULE,encode,1), + dbg:ctpg(?MODULE,decode,1); + +dbg_trace(flags, raw_messages, A) -> dbg_trace(flags, ssh_messages, A); +dbg_trace(on, raw_messages, A) -> dbg_trace(on, ssh_messages, A); +dbg_trace(off, raw_messages, A) -> dbg_trace(off, ssh_messages, A); + +dbg_trace(format, ssh_messages, {call,{?MODULE,encode,[Msg]}}) -> + Name = string:to_upper(atom_to_list(element(1,Msg))), + ["Going to send ",Name,":\n", + wr_record(ssh_dbg:shrink_bin(Msg)) + ]; +dbg_trace(format, ssh_messages, {return_from,{?MODULE,decode,1},Msg}) -> + Name = string:to_upper(atom_to_list(element(1,Msg))), + ["Received ",Name,":\n", + wr_record(ssh_dbg:shrink_bin(Msg)) + ]; + +dbg_trace(format, raw_messages, {call,{?MODULE,decode,[BytesPT]}}) -> + ["Received plain text bytes (shown after decryption):\n", + io_lib:format("~p",[BytesPT]) + ]; +dbg_trace(format, raw_messages, {return_from,{?MODULE,encode,1},BytesPT}) -> + ["Going to send plain text bytes (shown before encryption):\n", + io_lib:format("~p",[BytesPT]) + ]. + + +?wr_record(ssh_msg_disconnect); +?wr_record(ssh_msg_ignore); +?wr_record(ssh_msg_unimplemented); +?wr_record(ssh_msg_debug); +?wr_record(ssh_msg_service_request); +?wr_record(ssh_msg_service_accept); +?wr_record(ssh_msg_kexinit); +?wr_record(ssh_msg_kexdh_init); +?wr_record(ssh_msg_kexdh_reply); +?wr_record(ssh_msg_newkeys); +?wr_record(ssh_msg_ext_info); +?wr_record(ssh_msg_kex_dh_gex_request); +?wr_record(ssh_msg_kex_dh_gex_request_old); +?wr_record(ssh_msg_kex_dh_gex_group); +?wr_record(ssh_msg_kex_dh_gex_init); +?wr_record(ssh_msg_kex_dh_gex_reply); +?wr_record(ssh_msg_kex_ecdh_init); +?wr_record(ssh_msg_kex_ecdh_reply); + +?wr_record(ssh_msg_userauth_request); +?wr_record(ssh_msg_userauth_failure); +?wr_record(ssh_msg_userauth_success); +?wr_record(ssh_msg_userauth_banner); +?wr_record(ssh_msg_userauth_passwd_changereq); +?wr_record(ssh_msg_userauth_pk_ok); +?wr_record(ssh_msg_userauth_info_request); +?wr_record(ssh_msg_userauth_info_response); + +?wr_record(ssh_msg_global_request); +?wr_record(ssh_msg_request_success); +?wr_record(ssh_msg_request_failure); +?wr_record(ssh_msg_channel_open); +?wr_record(ssh_msg_channel_open_confirmation); +?wr_record(ssh_msg_channel_open_failure); +?wr_record(ssh_msg_channel_window_adjust); +?wr_record(ssh_msg_channel_data); +?wr_record(ssh_msg_channel_extended_data); +?wr_record(ssh_msg_channel_eof); +?wr_record(ssh_msg_channel_close); +?wr_record(ssh_msg_channel_request); +?wr_record(ssh_msg_channel_success); +?wr_record(ssh_msg_channel_failure); + +wr_record(R) -> io_lib:format('~p~n',[R]). diff --git a/lib/ssh/src/ssh_no_io.erl b/lib/ssh/src/ssh_no_io.erl index 1da257ed99..31963118cb 100644 --- a/lib/ssh/src/ssh_no_io.erl +++ b/lib/ssh/src/ssh_no_io.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2005-2016. All Rights Reserved. +%% Copyright Ericsson AB 2005-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -31,35 +31,24 @@ -spec yes_no(any(), any()) -> no_return(). yes_no(_, _) -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, - description = "User interaction is not allowed"}, - {no_io_allowed, yes_no}). + ?DISCONNECT(?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, + "User interaction is not allowed"). -spec read_password(any(), any()) -> no_return(). read_password(_, _) -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, - description = "User interaction is not allowed"}, - {no_io_allowed, read_password}). - + ?DISCONNECT(?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, + "User interaction is not allowed"). -spec read_line(any(), any()) -> no_return(). read_line(_, _) -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, - description = "User interaction is not allowed"}, - {no_io_allowed, read_line}). - + ?DISCONNECT(?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, + "User interaction is not allowed"). -spec format(any(), any()) -> no_return(). format(_, _) -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, - description = "User interaction is not allowed"}, - {no_io_allowed, format}). - + ?DISCONNECT(?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, + "User interaction is not allowed"). diff --git a/lib/ssh/src/ssh_options.erl b/lib/ssh/src/ssh_options.erl index 1e10f72956..1010c9be55 100644 --- a/lib/ssh/src/ssh_options.erl +++ b/lib/ssh/src/ssh_options.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2017. All Rights Reserved. +%% Copyright Ericsson AB 2004-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -32,7 +32,7 @@ handle_options/2 ]). --export_type([options/0 +-export_type([private_options/0 ]). %%%================================================================ @@ -47,16 +47,23 @@ default => any() }. +-type option_key() :: atom(). + -type option_declarations() :: #{ {option_key(),def} := option_declaration() }. -type error() :: {error,{eoptions,any()}} . +-type private_options() :: #{socket_options := socket_options(), + internal_options := internal_options(), + option_key() => any() + }. + %%%================================================================ %%% %%% Get an option %%% --spec get_value(option_class(), option_key(), options(), +-spec get_value(option_class(), option_key(), private_options(), atom(), non_neg_integer()) -> any() | no_return(). get_value(Class, Key, Opts, _CallerMod, _CallerLine) when is_map(Opts) -> @@ -69,7 +76,7 @@ get_value(Class, Key, Opts, _CallerMod, _CallerLine) -> error({bad_options,Class, Key, Opts, _CallerMod, _CallerLine}). --spec get_value(option_class(), option_key(), options(), fun(() -> any()), +-spec get_value(option_class(), option_key(), private_options(), fun(() -> any()), atom(), non_neg_integer()) -> any() | no_return(). get_value(socket_options, Key, Opts, DefFun, _CallerMod, _CallerLine) when is_map(Opts) -> @@ -91,8 +98,8 @@ get_value(Class, Key, Opts, _DefFun, _CallerMod, _CallerLine) -> %%% Put an option %%% --spec put_value(option_class(), option_in(), options(), - atom(), non_neg_integer()) -> options(). +-spec put_value(option_class(), option_in(), private_options(), + atom(), non_neg_integer()) -> private_options(). put_value(user_options, KeyVal, Opts, _CallerMod, _CallerLine) when is_map(Opts) -> put_user_value(KeyVal, Opts); @@ -131,8 +138,8 @@ put_socket_value(A, SockOpts) when is_atom(A) -> %%% Delete an option %%% --spec delete_key(option_class(), option_key(), options(), - atom(), non_neg_integer()) -> options(). +-spec delete_key(option_class(), option_key(), private_options(), + atom(), non_neg_integer()) -> private_options(). delete_key(internal_options, Key, Opts, _CallerMod, _CallerLine) when is_map(Opts) -> InternalOpts = maps:get(internal_options,Opts), @@ -144,9 +151,7 @@ delete_key(internal_options, Key, Opts, _CallerMod, _CallerLine) when is_map(Opt %%% Initialize the options %%% --spec handle_options(role(), proplists:proplist()) -> options() | error() . - --spec handle_options(role(), proplists:proplist(), options()) -> options() | error() . +-spec handle_options(role(), client_options()|daemon_options()) -> private_options() | error() . handle_options(Role, PropList0) -> handle_options(Role, PropList0, #{socket_options => [], @@ -155,7 +160,7 @@ handle_options(Role, PropList0) -> }). handle_options(Role, PropList0, Opts0) when is_map(Opts0), - is_list(PropList0) -> + is_list(PropList0) -> PropList1 = proplists:unfold(PropList0), try OptionDefinitions = default(Role), @@ -275,10 +280,12 @@ default(server) -> class => user_options }, - {exec, def} => % FIXME: need some archeology.... + {exec, def} => #{default => undefined, - chk => fun({M,F,_}) -> is_atom(M) andalso is_atom(F); - (V) -> is_function(V) + chk => fun({direct, V}) -> check_function1(V) orelse check_function2(V) orelse check_function3(V); + %% Compatibility (undocumented): + ({M,F,A}) -> is_atom(M) andalso is_atom(F) andalso is_list(A); + (V) -> check_function1(V) orelse check_function2(V) orelse check_function3(V) end, class => user_options }, @@ -427,6 +434,18 @@ default(client) -> class => user_options }, +%%% Not yet implemented {ed25519_pass_phrase, def} => +%%% Not yet implemented #{default => undefined, +%%% Not yet implemented chk => fun check_string/1, +%%% Not yet implemented class => user_options +%%% Not yet implemented }, +%%% Not yet implemented +%%% Not yet implemented {ed448_pass_phrase, def} => +%%% Not yet implemented #{default => undefined, +%%% Not yet implemented chk => fun check_string/1, +%%% Not yet implemented class => user_options +%%% Not yet implemented }, +%%% Not yet implemented {silently_accept_hosts, def} => #{default => false, chk => fun check_silently_accept_hosts/1, @@ -445,12 +464,6 @@ default(client) -> class => user_options }, - {pref_public_key_algs, def} => - #{default => ssh_transport:default_algorithms(public_key), - chk => fun check_pref_public_key_algs/1, - class => user_options - }, - {dh_gex_limits, def} => #{default => {1024, 6144, 8192}, % FIXME: Is this true nowadays? chk => fun({Min,I,Max}) -> @@ -516,6 +529,12 @@ default(common) -> class => user_options }, + {pref_public_key_algs, def} => + #{default => ssh_transport:default_algorithms(public_key), + chk => fun check_pref_public_key_algs/1, + class => user_options + }, + {preferred_algorithms, def} => #{default => ssh:default_algorithms(), chk => fun check_preferred_algorithms/1, @@ -592,9 +611,24 @@ default(common) -> class => user_options }, - {rekey_limit, def} => % FIXME: Why not common? - #{default => 1024000000, - chk => fun check_non_neg_integer/1, + {rekey_limit, def} => + #{default => {3600000, 1024000000}, % {1 hour, 1 GB} + chk => fun({infinity, infinity}) -> + true; + ({Mins, infinity}) when is_integer(Mins), Mins>0 -> + {true, {Mins*60*1000, infinity}}; + ({infinity, Bytes}) when is_integer(Bytes), Bytes>=0 -> + true; + ({Mins, Bytes}) when is_integer(Mins), Mins>0, + is_integer(Bytes), Bytes>=0 -> + {true, {Mins*60*1000, Bytes}}; + (infinity) -> + {true, {3600000, infinity}}; + (Bytes) when is_integer(Bytes), Bytes>=0 -> + {true, {3600000, Bytes}}; + (_) -> + false + end, class => user_options }, diff --git a/lib/ssh/src/ssh_server_channel.erl b/lib/ssh/src/ssh_server_channel.erl new file mode 100644 index 0000000000..555080e9ee --- /dev/null +++ b/lib/ssh/src/ssh_server_channel.erl @@ -0,0 +1,55 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2013-2018. All Rights Reserved. +%% +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% + +%% +%% Description: a gen_server implementing a simple +%% terminal (using the group module) for a CLI +%% over SSH + +-module(ssh_server_channel). + +%% API to server side channel that can be pluged into the erlang ssh daemeon +-callback init(Args :: term()) -> + {ok, State :: term()} | {ok, State :: term(), timeout() | hibernate} | + {stop, Reason :: term()} | ignore. + +-callback terminate(Reason :: (normal | shutdown | {shutdown, term()} | + term()), + State :: term()) -> + term(). + +-callback handle_msg(Msg ::term(), State :: term()) -> + {ok, State::term()} | {stop, ChannelId::ssh:channel_id(), State::term()}. +-callback handle_ssh_msg({ssh_cm, ConnectionRef::ssh:connection_ref(), SshMsg::term()}, + State::term()) -> {ok, State::term()} | + {stop, ChannelId::ssh:channel_id(), + State::term()}. + +%%% Internal API +-export([start_link/5, + get_print_info/1 + ]). + +start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec) -> + ssh_client_channel:start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec). + + +get_print_info(Pid) -> + ssh_client_channel:get_print_info(Pid). diff --git a/lib/ssh/src/ssh_channel_sup.erl b/lib/ssh/src/ssh_server_channel_sup.erl index 8444533fd1..ff74061bb3 100644 --- a/lib/ssh/src/ssh_channel_sup.erl +++ b/lib/ssh/src/ssh_server_channel_sup.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2016. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -22,7 +22,7 @@ %%---------------------------------------------------------------------- %% Purpose: Ssh channel supervisor. %%---------------------------------------------------------------------- --module(ssh_channel_sup). +-module(ssh_server_channel_sup). -behaviour(supervisor). @@ -40,18 +40,16 @@ start_link(Args) -> start_child(Sup, Callback, Id, Args, Exec) -> ChildSpec = #{id => make_ref(), - start => {ssh_channel, start_link, [self(), Id, Callback, Args, Exec]}, + start => {ssh_server_channel, start_link, [self(), Id, Callback, Args, Exec]}, restart => temporary, type => worker, - modules => [ssh_channel] + modules => [ssh_server_channel] }, supervisor:start_child(Sup, ChildSpec). %%%========================================================================= %%% Supervisor callback %%%========================================================================= --spec init( [term()] ) -> {ok,{supervisor:sup_flags(),[supervisor:child_spec()]}} | ignore . - init(_Args) -> RestartStrategy = one_for_one, MaxR = 10, diff --git a/lib/ssh/src/ssh_server_key.erl b/lib/ssh/src/ssh_server_key.erl deleted file mode 100644 index 2ce0c7e3fe..0000000000 --- a/lib/ssh/src/ssh_server_key.erl +++ /dev/null @@ -1,34 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2011-2016. All Rights Reserved. -%% -%% Licensed under the Apache License, Version 2.0 (the "License"); -%% you may not use this file except in compliance with the License. -%% You may obtain a copy of the License at -%% -%% http://www.apache.org/licenses/LICENSE-2.0 -%% -%% Unless required by applicable law or agreed to in writing, software -%% distributed under the License is distributed on an "AS IS" BASIS, -%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -%% See the License for the specific language governing permissions and -%% limitations under the License. -%% -%% %CopyrightEnd% -%% - --module(ssh_server_key). - --include_lib("public_key/include/public_key.hrl"). --include("ssh.hrl"). - --type ssh_algorithm() :: string(). - --callback host_key(Algorithm :: ssh_algorithm(), Options :: list()) -> - {ok, [{public_key(), Attributes::list()}]} | public_key() - | {error, string()}. - --callback is_auth_key(Key :: public_key(), User :: string(), - Algorithm :: ssh_algorithm(), Options :: list()) -> - boolean(). diff --git a/lib/ssh/src/ssh_server_key_api.erl b/lib/ssh/src/ssh_server_key_api.erl index 3f1b886fa7..ef1fe7d69c 100644 --- a/lib/ssh/src/ssh_server_key_api.erl +++ b/lib/ssh/src/ssh_server_key_api.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2011-2016. All Rights Reserved. +%% Copyright Ericsson AB 2011-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -23,16 +23,18 @@ -include_lib("public_key/include/public_key.hrl"). -include("ssh.hrl"). --export_type([algorithm/0]). +-export_type([daemon_key_cb_options/0]). --type algorithm() :: ssh_client_key_api:algorithm(). +-type daemon_key_cb_options() :: [{key_cb_private,term()} | ssh:daemon_option()]. --callback host_key(Algorithm :: algorithm(), - DaemonOptions :: proplists:proplist()) -> +-callback host_key(Algorithm :: ssh:pubkey_alg(), + DaemonOptions :: daemon_key_cb_options() + ) -> {ok, PrivateKey :: public_key:private_key()} | {error, term()}. -callback is_auth_key(PublicKey :: public_key:public_key(), User :: string(), - DaemonOptions :: proplists:proplist()) -> + DaemonOptions :: daemon_key_cb_options() + ) -> boolean(). diff --git a/lib/ssh/src/ssh_sftp.erl b/lib/ssh/src/ssh_sftp.erl index 9e1229dc85..1b2ba5a50b 100644 --- a/lib/ssh/src/ssh_sftp.erl +++ b/lib/ssh/src/ssh_sftp.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2005-2017. All Rights Reserved. +%% Copyright Ericsson AB 2005-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -24,7 +24,7 @@ -module(ssh_sftp). --behaviour(ssh_channel). +-behaviour(ssh_client_channel). -include_lib("kernel/include/file.hrl"). -include("ssh.hrl"). @@ -47,11 +47,13 @@ recv_window/1, list_dir/2, read_file/2, write_file/3, recv_window/2, list_dir/3, read_file/3, write_file/4]). -%% ssh_channel callbacks +%% ssh_client_channel callbacks -export([init/1, handle_call/3, handle_cast/2, code_change/3, handle_msg/2, handle_ssh_msg/2, terminate/2]). %% TODO: Should be placed elsewhere ssh_sftpd should not call functions in ssh_sftp! -export([info_to_attr/1, attr_to_info/1]). +-export([dbg_trace/3]). + -record(state, { xf, @@ -121,7 +123,7 @@ start_channel(Cm, UserOptions) when is_pid(Cm) -> {_SshOpts, ChanOpts, SftpOpts} = handle_options(UserOptions), case ssh_xfer:attach(Cm, [], ChanOpts) of {ok, ChannelId, Cm} -> - case ssh_channel:start(Cm, ChannelId, + case ssh_client_channel:start(Cm, ChannelId, ?MODULE, [Cm, ChannelId, SftpOpts]) of {ok, Pid} -> case wait_for_version_negotiation(Pid, Timeout) of @@ -149,7 +151,7 @@ start_channel(Host, Port, UserOptions) -> proplists:get_value(timeout, SftpOpts, infinity)), case ssh_xfer:connect(Host, Port, SshOpts, ChanOpts, Timeout) of {ok, ChannelId, Cm} -> - case ssh_channel:start(Cm, ChannelId, ?MODULE, [Cm,ChannelId,SftpOpts]) of + case ssh_client_channel:start(Cm, ChannelId, ?MODULE, [Cm,ChannelId,SftpOpts]) of {ok, Pid} -> case wait_for_version_negotiation(Pid, Timeout) of ok -> @@ -169,21 +171,16 @@ start_channel(Host, Port, UserOptions) -> stop_channel(Pid) -> case is_process_alive(Pid) of true -> - OldValue = process_flag(trap_exit, true), - link(Pid), - exit(Pid, ssh_sftp_stop_channel), - receive - {'EXIT', Pid, normal} -> - ok - after 5000 -> - exit(Pid, kill), - receive - {'EXIT', Pid, killed} -> - ok - end - end, - process_flag(trap_exit, OldValue), - ok; + MonRef = erlang:monitor(process, Pid), + unlink(Pid), + exit(Pid, ssh_sftp_stop_channel), + receive {'DOWN',MonRef,_,_,_} -> ok + after + 1000 -> + exit(Pid, kill), + erlang:demonitor(MonRef, [flush]), + ok + end; false -> ok end. @@ -801,13 +798,22 @@ handle_ssh_msg({ssh_cm, _, {signal, _, _}}, State) -> %% Ignore signals according to RFC 4254 section 6.9. {ok, State}; -handle_ssh_msg({ssh_cm, _, {exit_signal, ChannelId, _, Error, _}}, +handle_ssh_msg({ssh_cm, _, {exit_signal, ChannelId, Signal, Error0, _}}, State0) -> + Error = + case Error0 of + "" -> Signal; + _ -> Error0 + end, State = reply_all(State0, {error, Error}), {stop, ChannelId, State}; handle_ssh_msg({ssh_cm, _, {exit_status, ChannelId, Status}}, State0) -> - State = reply_all(State0, {error, {exit_status, Status}}), + State = + case State0 of + 0 -> State0; + _ -> reply_all(State0, {error, {exit_status, Status}}) + end, {stop, ChannelId, State}. %%-------------------------------------------------------------------- @@ -823,7 +829,7 @@ handle_msg({ssh_channel_up, _, _}, #state{opts = Options, xf = Xf} = State) -> %% Version negotiation timed out handle_msg({timeout, undefined, From}, #state{xf = #ssh_xfer{channel = ChannelId}} = State) -> - ssh_channel:reply(From, {error, timeout}), + ssh_client_channel:reply(From, {error, timeout}), {stop, ChannelId, State}; handle_msg({timeout, Id, From}, #state{req_list = ReqList0} = State) -> @@ -832,7 +838,7 @@ handle_msg({timeout, Id, From}, #state{req_list = ReqList0} = State) -> {ok, State}; _ -> ReqList = lists:keydelete(Id, 1, ReqList0), - ssh_channel:reply(From, {error, timeout}), + ssh_client_channel:reply(From, {error, timeout}), {ok, State#state{req_list = ReqList}} end; @@ -880,7 +886,7 @@ handle_options([Opt|Rest], Sftp, Chan, Ssh) -> handle_options(Rest, Sftp, Chan, [Opt|Ssh]). call(Pid, Msg, TimeOut) -> - ssh_channel:call(Pid, {{timeout, TimeOut}, Msg}, infinity). + ssh_client_channel:call(Pid, {{timeout, TimeOut}, Msg}, infinity). handle_reply(State, <<?UINT32(Len),Reply:Len/binary,Rest/binary>>) -> do_handle_reply(State, Reply, Rest); @@ -899,7 +905,7 @@ do_handle_reply(#state{xf = Xf} = State, true -> ok end, - ssh_channel:reply(From, ok) + ssh_client_channel:reply(From, ok) end, State#state{xf = Xf#ssh_xfer{vsn = Version, ext = Ext}, rep_buf = Rest}; @@ -947,7 +953,7 @@ async_reply(ReqID, Reply, _From={To,_}, State) -> State. sync_reply(Reply, From, State) -> - catch (ssh_channel:reply(From, Reply)), + catch (ssh_client_channel:reply(From, Reply)), State. open2(OrigReqID,FileName,Handle,Mode,Async,From,State) -> @@ -1460,3 +1466,21 @@ format_channel_start_error({shutdown, Reason}) -> Reason; format_channel_start_error(Reason) -> Reason. + +%%%################################################################ +%%%# +%%%# Tracing +%%%# + +dbg_trace(points, _, _) -> [terminate]; + +dbg_trace(flags, terminate, _) -> [c]; +dbg_trace(on, terminate, _) -> dbg:tp(?MODULE, terminate, 2, x); +dbg_trace(off, terminate, _) -> dbg:ctpg(?MODULE, terminate, 2); +dbg_trace(format, terminate, {call, {?MODULE,terminate, [Reason, State]}}) -> + ["Sftp Terminating:\n", + io_lib:format("Reason: ~p,~nState:~n~s", [Reason, wr_record(State)]) + ]. + +?wr_record(state). + diff --git a/lib/ssh/src/ssh_sftpd.erl b/lib/ssh/src/ssh_sftpd.erl index 427edf01ab..aa9ba0f9bb 100644 --- a/lib/ssh/src/ssh_sftpd.erl +++ b/lib/ssh/src/ssh_sftpd.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2005-2017. All Rights Reserved. +%% Copyright Ericsson AB 2005-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -24,7 +24,7 @@ -module(ssh_sftpd). --behaviour(ssh_daemon_channel). +-behaviour(ssh_server_channel). -include_lib("kernel/include/file.hrl"). @@ -38,6 +38,8 @@ -export([init/1, handle_ssh_msg/2, handle_msg/2, terminate/2]). +-export([dbg_trace/3]). + -record(state, { xf, % [{channel,ssh_xfer states}...] cwd, % current dir (on first connect) @@ -56,21 +58,7 @@ %%==================================================================== %% API %%==================================================================== --spec init(Args :: term()) -> - {ok, State :: term()} | {ok, State :: term(), timeout() | hibernate} | - {stop, Reason :: term()} | ignore. - --spec terminate(Reason :: (normal | shutdown | {shutdown, term()} | - term()), - State :: term()) -> - term(). - --spec handle_msg(Msg ::term(), State :: term()) -> - {ok, State::term()} | {stop, ChannelId::integer(), State::term()}. --spec handle_ssh_msg({ssh_cm, ConnectionRef::term(), SshMsg::term()}, - State::term()) -> {ok, State::term()} | - {stop, ChannelId::integer(), - State::term()}. +-spec subsystem_spec(list()) -> subsystem_spec(). subsystem_spec(Options) -> {"sftp", {?MODULE, Options}}. @@ -137,9 +125,9 @@ handle_ssh_msg({ssh_cm, _, {signal, _, _}}, State) -> %% Ignore signals according to RFC 4254 section 6.9. {ok, State}; -handle_ssh_msg({ssh_cm, _, {exit_signal, ChannelId, _, Error, _}}, State) -> - Report = io_lib:format("Connection closed by peer ~n Error ~p~n", - [Error]), +handle_ssh_msg({ssh_cm, _, {exit_signal, ChannelId, Signal, Error, _}}, State) -> + Report = io_lib:format("Connection closed by peer signal ~p~n Error ~p~n", + [Signal,Error]), error_logger:error_report(Report), {stop, ChannelId, State}; @@ -360,10 +348,12 @@ handle_op(?SSH_FXP_REMOVE, ReqId, <<?UINT32(PLen), BPath:PLen/binary>>, case IsDir of %% This version 6 we still have ver 5 true when Vsn > 5 -> ssh_xfer:xf_send_status(State0#state.xf, ReqId, - ?SSH_FX_FILE_IS_A_DIRECTORY, "File is a directory"); + ?SSH_FX_FILE_IS_A_DIRECTORY, "File is a directory"), + State0; true -> ssh_xfer:xf_send_status(State0#state.xf, ReqId, - ?SSH_FX_FAILURE, "File is a directory"); + ?SSH_FX_FAILURE, "File is a directory"), + State0; false -> {Status, FS1} = FileMod:delete(Path, FS0), State1 = State0#state{file_state = FS1}, @@ -518,11 +508,8 @@ close_our_file({_,Fd}, FileMod, FS0) -> FS1. %%% stat: do the stat -stat(Vsn, ReqId, Data, State, F) when Vsn =< 3-> - <<?UINT32(BLen), BPath:BLen/binary>> = Data, - stat(ReqId, unicode:characters_to_list(BPath), State, F); -stat(Vsn, ReqId, Data, State, F) when Vsn >= 4-> - <<?UINT32(BLen), BPath:BLen/binary, ?UINT32(_Flags)>> = Data, +stat(Vsn, ReqId, Data, State, F) -> + <<?UINT32(BLen), BPath:BLen/binary, _/binary>> = Data, stat(ReqId, unicode:characters_to_list(BPath), State, F). fstat(Vsn, ReqId, Data, State) when Vsn =< 3-> @@ -947,3 +934,20 @@ maybe_increase_recv_window(ConnectionManager, ChannelId, Options) -> Increment =< 0 -> do_nothing end. + +%%%################################################################ +%%%# +%%%# Tracing +%%%# + +dbg_trace(points, _, _) -> [terminate]; + +dbg_trace(flags, terminate, _) -> [c]; +dbg_trace(on, terminate, _) -> dbg:tp(?MODULE, terminate, 2, x); +dbg_trace(off, terminate, _) -> dbg:ctpg(?MODULE, terminate, 2); +dbg_trace(format, terminate, {call, {?MODULE,terminate, [Reason, State]}}) -> + ["SftpD Terminating:\n", + io_lib:format("Reason: ~p,~nState:~n~s", [Reason, wr_record(State)]) + ]. + +?wr_record(state). diff --git a/lib/ssh/src/ssh_shell.erl b/lib/ssh/src/ssh_shell.erl index 17224b6ef4..cdc9a6df5b 100644 --- a/lib/ssh/src/ssh_shell.erl +++ b/lib/ssh/src/ssh_shell.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2009-2016. All Rights Reserved. +%% Copyright Ericsson AB 2009-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -22,18 +22,21 @@ -module(ssh_shell). +-include("ssh.hrl"). -include("ssh_connect.hrl"). %%% As this is an user interactive client it behaves like a daemon %%% channel inspite of it being a client. --behaviour(ssh_daemon_channel). +-behaviour(ssh_server_channel). -%% ssh_channel callbacks +%% ssh_server_channel callbacks -export([init/1, handle_msg/2, handle_ssh_msg/2, terminate/2]). %% Spawn export -export([input_loop/2]). +-export([dbg_trace/3]). + -record(state, { io, %% Io process @@ -43,23 +46,8 @@ ). %%==================================================================== -%% ssh_channel callbacks +%% ssh_server_channel callbacks %%==================================================================== --spec init(Args :: term()) -> - {ok, State :: term()} | {ok, State :: term(), timeout() | hibernate} | - {stop, Reason :: term()} | ignore. - --spec terminate(Reason :: (normal | shutdown | {shutdown, term()} | - term()), - State :: term()) -> - term(). - --spec handle_msg(Msg ::term(), State :: term()) -> - {ok, State::term()} | {stop, ChannelId::integer(), State::term()}. --spec handle_ssh_msg({ssh_cm, ConnectionRef::term(), SshMsg::term()}, - State::term()) -> {ok, State::term()} | - {stop, ChannelId::integer(), - State::term()}. %%-------------------------------------------------------------------- %% Function: init(Args) -> {ok, State} @@ -194,3 +182,20 @@ get_ancestors() -> A when is_list(A) -> A; _ -> [] end. + +%%%################################################################ +%%%# +%%%# Tracing +%%%# + +dbg_trace(points, _, _) -> [terminate]; + +dbg_trace(flags, terminate, _) -> [c]; +dbg_trace(on, terminate, _) -> dbg:tp(?MODULE, terminate, 2, x); +dbg_trace(off, terminate, _) -> dbg:ctpg(?MODULE, terminate, 2); +dbg_trace(format, terminate, {call, {?MODULE,terminate, [Reason, State]}}) -> + ["Shell Terminating:\n", + io_lib:format("Reason: ~p,~nState:~n~s", [Reason, wr_record(State)]) + ]. + +?wr_record(state). diff --git a/lib/ssh/src/ssh_subsystem_sup.erl b/lib/ssh/src/ssh_subsystem_sup.erl index 77da240a66..5fc8f7e764 100644 --- a/lib/ssh/src/ssh_subsystem_sup.erl +++ b/lib/ssh/src/ssh_subsystem_sup.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -48,7 +48,7 @@ connection_supervisor(SupPid) -> channel_supervisor(SupPid) -> Children = supervisor:which_children(SupPid), - ssh_channel_sup(Children). + ssh_server_channel_sup(Children). %%%========================================================================= %%% Supervisor callback @@ -78,8 +78,8 @@ ssh_connection_child_spec(Role, Address, Port, _Profile, Options) -> }. ssh_channel_child_spec(Role, Address, Port, _Profile, Options) -> - #{id => id(Role, ssh_channel_sup, Address, Port), - start => {ssh_channel_sup, start_link, [Options]}, + #{id => id(Role, ssh_server_channel_sup, Address, Port), + start => {ssh_server_channel_sup, start_link, [Options]}, restart => temporary, type => supervisor }. @@ -92,10 +92,10 @@ ssh_connection_sup([{_, Child, _, [ssh_connection_sup]} | _]) -> ssh_connection_sup([_ | Rest]) -> ssh_connection_sup(Rest). -ssh_channel_sup([{_, Child, _, [ssh_channel_sup]} | _]) -> +ssh_server_channel_sup([{_, Child, _, [ssh_server_channel_sup]} | _]) -> Child; -ssh_channel_sup([_ | Rest]) -> - ssh_channel_sup(Rest). +ssh_server_channel_sup([_ | Rest]) -> + ssh_server_channel_sup(Rest). diff --git a/lib/ssh/src/ssh_sup.erl b/lib/ssh/src/ssh_sup.erl index 8183016ba5..61afbcd2ed 100644 --- a/lib/ssh/src/ssh_sup.erl +++ b/lib/ssh/src/ssh_sup.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. diff --git a/lib/ssh/src/ssh_system_sup.erl b/lib/ssh/src/ssh_system_sup.erl index 17f990c5d8..ed7c0c2bd5 100644 --- a/lib/ssh/src/ssh_system_sup.erl +++ b/lib/ssh/src/ssh_system_sup.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -88,11 +88,11 @@ stop_listener(Address, Port, Profile) -> stop_system(SysSup) -> - spawn(fun() -> sshd_sup:stop_child(SysSup) end), + catch sshd_sup:stop_child(SysSup), ok. stop_system(Address, Port, Profile) -> - spawn(fun() -> sshd_sup:stop_child(Address, Port, Profile) end), + catch sshd_sup:stop_child(Address, Port, Profile), ok. diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl index 975053d301..9ff20454cd 100644 --- a/lib/ssh/src/ssh_transport.erl +++ b/lib/ssh/src/ssh_transport.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2017. All Rights Reserved. +%% Copyright Ericsson AB 2004-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -36,7 +36,7 @@ default_algorithms/0, default_algorithms/1, algo_classes/0, algo_class/1, algo_two_spec_classes/0, algo_two_spec_class/1, - handle_packet_part/4, + handle_packet_part/5, handle_hello_version/1, key_exchange_init_msg/1, key_init/3, new_keys_message/1, @@ -51,7 +51,11 @@ extract_public_key/1, ssh_packet/2, pack/2, valid_key_sha_alg/2, - sha/1, sign/3, verify/5]). + sha/1, sign/3, verify/5, + get_host_key/2, + call_KeyCb/3]). + +-export([dbg_trace/3]). %%% For test suites -export([pack/3, adjust_algs_for_peer_version/2]). @@ -102,12 +106,14 @@ algo_two_spec_class(_) -> false. default_algorithms(kex) -> supported_algorithms(kex, [ - 'diffie-hellman-group1-sha1' % Gone in OpenSSH 7.3.p1 + %% Gone in OpenSSH 7.3.p1: + 'diffie-hellman-group1-sha1' ]); default_algorithms(cipher) -> supported_algorithms(cipher, same(['AEAD_AES_128_GCM', - 'AEAD_AES_256_GCM'])); + 'AEAD_AES_256_GCM' + ])); default_algorithms(mac) -> supported_algorithms(mac, same(['AEAD_AES_128_GCM', 'AEAD_AES_256_GCM'])); @@ -121,13 +127,18 @@ supported_algorithms() -> [{K,supported_algorithms(K)} || K <- algo_classes()]. supported_algorithms(kex) -> select_crypto_supported( [ - {'ecdh-sha2-nistp384', [{public_keys,ecdh}, {ec_curve,secp384r1}, {hashs,sha384}]}, - {'ecdh-sha2-nistp521', [{public_keys,ecdh}, {ec_curve,secp521r1}, {hashs,sha512}]}, - {'ecdh-sha2-nistp256', [{public_keys,ecdh}, {ec_curve,secp256r1}, {hashs,sha256}]}, + {'ecdh-sha2-nistp384', [{public_keys,ecdh}, {curves,secp384r1}, {hashs,sha384}]}, + {'ecdh-sha2-nistp521', [{public_keys,ecdh}, {curves,secp521r1}, {hashs,sha512}]}, + {'ecdh-sha2-nistp256', [{public_keys,ecdh}, {curves,secp256r1}, {hashs,sha256}]}, {'diffie-hellman-group-exchange-sha256', [{public_keys,dh}, {hashs,sha256}]}, {'diffie-hellman-group16-sha512', [{public_keys,dh}, {hashs,sha512}]}, % In OpenSSH 7.3.p1 {'diffie-hellman-group18-sha512', [{public_keys,dh}, {hashs,sha512}]}, % In OpenSSH 7.3.p1 {'diffie-hellman-group14-sha256', [{public_keys,dh}, {hashs,sha256}]}, % In OpenSSH 7.3.p1 + %% https://tools.ietf.org/html/draft-ietf-curdle-ssh-curves + %% Secure Shell (SSH) Key Exchange Method using Curve25519 and Curve448 + {'curve25519-sha256', [{public_keys,ecdh}, {curves,x25519}, {hashs,sha256}]}, + {'[email protected]', [{public_keys,ecdh}, {curves,x25519}, {hashs,sha256}]}, + {'curve448-sha512', [{public_keys,ecdh}, {curves,x448}, {hashs,sha512}]}, {'diffie-hellman-group14-sha1', [{public_keys,dh}, {hashs,sha}]}, {'diffie-hellman-group-exchange-sha1', [{public_keys,dh}, {hashs,sha}]}, {'diffie-hellman-group1-sha1', [{public_keys,dh}, {hashs,sha}]} @@ -135,9 +146,11 @@ supported_algorithms(kex) -> supported_algorithms(public_key) -> select_crypto_supported( [ - {'ecdsa-sha2-nistp384', [{public_keys,ecdsa}, {hashs,sha384}, {ec_curve,secp384r1}]}, - {'ecdsa-sha2-nistp521', [{public_keys,ecdsa}, {hashs,sha512}, {ec_curve,secp521r1}]}, - {'ecdsa-sha2-nistp256', [{public_keys,ecdsa}, {hashs,sha256}, {ec_curve,secp256r1}]}, + {'ecdsa-sha2-nistp384', [{public_keys,ecdsa}, {hashs,sha384}, {curves,secp384r1}]}, + {'ecdsa-sha2-nistp521', [{public_keys,ecdsa}, {hashs,sha512}, {curves,secp521r1}]}, + {'ecdsa-sha2-nistp256', [{public_keys,ecdsa}, {hashs,sha256}, {curves,secp256r1}]}, + {'ssh-ed25519', [{public_keys,eddsa}, {curves,ed25519} ]}, + {'ssh-ed448', [{public_keys,eddsa}, {curves,ed448} ]}, {'ssh-rsa', [{public_keys,rsa}, {hashs,sha} ]}, {'rsa-sha2-256', [{public_keys,rsa}, {hashs,sha256} ]}, {'rsa-sha2-512', [{public_keys,rsa}, {hashs,sha512} ]}, @@ -148,6 +161,7 @@ supported_algorithms(cipher) -> same( select_crypto_supported( [ + {'[email protected]', [{ciphers,chacha20}, {macs,poly1305}]}, {'[email protected]', [{ciphers,{aes_gcm,256}}]}, {'aes256-ctr', [{ciphers,{aes_ctr,256}}]}, {'aes192-ctr', [{ciphers,{aes_ctr,192}}]}, @@ -162,9 +176,9 @@ supported_algorithms(cipher) -> supported_algorithms(mac) -> same( select_crypto_supported( - [{'hmac-sha2-256', [{hashs,sha256}]}, - {'hmac-sha2-512', [{hashs,sha512}]}, - {'hmac-sha1', [{hashs,sha}]}, + [{'hmac-sha2-256', [{macs,hmac}, {hashs,sha256}]}, + {'hmac-sha2-512', [{macs,hmac}, {hashs,sha512}]}, + {'hmac-sha1', [{macs,hmac}, {hashs,sha}]}, {'AEAD_AES_128_GCM', [{ciphers,{aes_gcm,128}}]}, {'AEAD_AES_256_GCM', [{ciphers,{aes_gcm,256}}]} ] @@ -319,10 +333,11 @@ handle_kexinit_msg(#ssh_msg_kexinit{} = CounterPart, #ssh_msg_kexinit{} = Own, key_exchange_first_msg(Algos#alg.kex, Ssh#ssh{algorithms = Algos}) catch - _:_ -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Selection of key exchange algorithm failed"}) + Class:Error -> + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("Kexinit failed in client: ~p:~p", + [Class,Error]) + ) end; handle_kexinit_msg(#ssh_msg_kexinit{} = CounterPart, #ssh_msg_kexinit{} = Own, @@ -335,10 +350,11 @@ handle_kexinit_msg(#ssh_msg_kexinit{} = CounterPart, #ssh_msg_kexinit{} = Own, Algos -> {ok, Ssh#ssh{algorithms = Algos}} catch - _:_ -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Selection of key exchange algorithm failed"}) + Class:Error -> + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("Kexinit failed in server: ~p:~p", + [Class,Error]) + ) end. @@ -399,7 +415,10 @@ key_exchange_first_msg(Kex, Ssh0=#ssh{opts=Opts}) when Kex == 'diffie-hellman-gr key_exchange_first_msg(Kex, Ssh0) when Kex == 'ecdh-sha2-nistp256' ; Kex == 'ecdh-sha2-nistp384' ; - Kex == 'ecdh-sha2-nistp521' -> + Kex == 'ecdh-sha2-nistp521' ; + Kex == 'curve25519-sha256' ; + Kex == '[email protected]'; + Kex == 'curve448-sha512' -> Curve = ecdh_curve(Kex), {Public, Private} = generate_key(ecdh, Curve), {SshPacket, Ssh1} = ssh_packet(#ssh_msg_kex_ecdh_init{q_c=Public}, Ssh0), @@ -416,7 +435,8 @@ key_exchange_first_msg(Kex, Ssh0) when Kex == 'ecdh-sha2-nistp256' ; %%% handle_kexdh_init(#ssh_msg_kexdh_init{e = E}, Ssh0 = #ssh{algorithms = #alg{kex=Kex, - hkey=SignAlg} = Algs}) -> + hkey=SignAlg} = Algs, + opts = Opts}) -> %% server {G, P} = dh_group(Kex), if @@ -424,7 +444,7 @@ handle_kexdh_init(#ssh_msg_kexdh_init{e = E}, Sz = dh_bits(Algs), {Public, Private} = generate_key(dh, [P,G,2*Sz]), K = compute_key(dh, E, Private, [P,G]), - MyPrivHostKey = get_host_key(Ssh0, SignAlg), + MyPrivHostKey = get_host_key(SignAlg, Opts), MyPubHostKey = extract_public_key(MyPrivHostKey), H = kex_hash(Ssh0, MyPubHostKey, sha(Kex), {E,Public,K}), H_SIG = sign(H, sha(SignAlg), MyPrivHostKey), @@ -439,12 +459,10 @@ handle_kexdh_init(#ssh_msg_kexdh_init{e = E}, session_id = sid(Ssh1, H)}}; true -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed, 'e' out of bounds"}, - {error,bad_e_from_peer} - ) + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("Kexdh init failed, received 'e' out of bounds~n E=~p~n P=~p", + [E,P]) + ) end. handle_kexdh_reply(#ssh_msg_kexdh_reply{public_host_key = PeerPubHostKey, @@ -464,20 +482,16 @@ handle_kexdh_reply(#ssh_msg_kexdh_reply{public_host_key = PeerPubHostKey, exchanged_hash = H, session_id = sid(Ssh, H)})}; Error -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed"}, - Error) + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("Kexdh init failed. Verify host key: ~p",[Error]) + ) end; true -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed, 'f' out of bounds"}, - bad_f_from_peer - ) + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("Kexdh init failed, received 'f' out of bounds~n F=~p~n P=~p", + [F,P]) + ) end. @@ -501,11 +515,9 @@ handle_kex_dh_gex_request(#ssh_msg_kex_dh_gex_request{min = Min0, keyex_info = {Min0, Max0, NBits} }}; {error,_} -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = "No possible diffie-hellman-group-exchange group found" - }) + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("No possible diffie-hellman-group-exchange group found",[]) + ) end; handle_kex_dh_gex_request(#ssh_msg_kex_dh_gex_request_old{n = NBits}, @@ -535,20 +547,14 @@ handle_kex_dh_gex_request(#ssh_msg_kex_dh_gex_request_old{n = NBits}, keyex_info = {-1, -1, NBits} % flag for kex_hash calc }}; {error,_} -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = "No possible diffie-hellman-group-exchange group found" - }) + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("No possible diffie-hellman-group-exchange group found",[]) + ) end; handle_kex_dh_gex_request(_, _) -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed, bad values in ssh_msg_kex_dh_gex_request"}, - bad_ssh_msg_kex_dh_gex_request). - + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + "Key exchange failed, bad values in ssh_msg_kex_dh_gex_request"). adjust_gex_min_max(Min0, Max0, Opts) -> {Min1, Max1} = ?GET_OPT(dh_gex_limits, Opts), @@ -558,11 +564,8 @@ adjust_gex_min_max(Min0, Max0, Opts) -> Min2 =< Max2 -> {Min2, Max2}; Max2 < Min2 -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = "No possible diffie-hellman-group-exchange group possible" - }) + ?DISCONNECT(?SSH_DISCONNECT_PROTOCOL_ERROR, + "No possible diffie-hellman-group-exchange group possible") end. @@ -580,14 +583,15 @@ handle_kex_dh_gex_init(#ssh_msg_kex_dh_gex_init{e = E}, #ssh{keyex_key = {{Private, Public}, {G, P}}, keyex_info = {Min, Max, NBits}, algorithms = #alg{kex=Kex, - hkey=SignAlg}} = Ssh0) -> + hkey=SignAlg}, + opts = Opts} = Ssh0) -> %% server if 1=<E, E=<(P-1) -> K = compute_key(dh, E, Private, [P,G]), if 1<K, K<(P-1) -> - MyPrivHostKey = get_host_key(Ssh0, SignAlg), + MyPrivHostKey = get_host_key(SignAlg, Opts), MyPubHostKey = extract_public_key(MyPrivHostKey), H = kex_hash(Ssh0, MyPubHostKey, sha(Kex), {Min,NBits,Max,P,G,E,Public,K}), H_SIG = sign(H, sha(SignAlg), MyPrivHostKey), @@ -600,18 +604,15 @@ handle_kex_dh_gex_init(#ssh_msg_kex_dh_gex_init{e = E}, session_id = sid(Ssh, H) }}; true -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed, 'K' out of bounds"}, - bad_K) + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + "Kexdh init failed, received 'k' out of bounds" + ) end; true -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed, 'e' out of bounds"}, - bad_e_from_peer) + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("Kexdh gex init failed, received 'e' out of bounds~n E=~p~n P=~p", + [E,P]) + ) end. handle_kex_dh_gex_reply(#ssh_msg_kex_dh_gex_reply{public_host_key = PeerPubHostKey, @@ -634,28 +635,22 @@ handle_kex_dh_gex_reply(#ssh_msg_kex_dh_gex_reply{public_host_key = PeerPubHostK {ok, SshPacket, install_alg(snd, Ssh#ssh{shared_secret = ssh_bits:mpint(K), exchanged_hash = H, session_id = sid(Ssh, H)})}; - _Error -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed" - }) + Error -> + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("Kexdh gex reply failed. Verify host key: ~p",[Error]) + ) end; true -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed, 'K' out of bounds"}, - bad_K) + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + "Kexdh gex init failed, 'K' out of bounds" + ) end; true -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed, 'f' out of bounds"}, - bad_f_from_peer - ) + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("Kexdh gex init failed, received 'f' out of bounds~n F=~p~n P=~p", + [F,P]) + ) end. %%%---------------------------------------------------------------- @@ -664,7 +659,8 @@ handle_kex_dh_gex_reply(#ssh_msg_kex_dh_gex_reply{public_host_key = PeerPubHostK %%% handle_kex_ecdh_init(#ssh_msg_kex_ecdh_init{q_c = PeerPublic}, Ssh0 = #ssh{algorithms = #alg{kex=Kex, - hkey=SignAlg}}) -> + hkey=SignAlg}, + opts = Opts}) -> %% at server Curve = ecdh_curve(Kex), {MyPublic, MyPrivate} = generate_key(ecdh, Curve), @@ -672,7 +668,7 @@ handle_kex_ecdh_init(#ssh_msg_kex_ecdh_init{q_c = PeerPublic}, compute_key(ecdh, PeerPublic, MyPrivate, Curve) of K -> - MyPrivHostKey = get_host_key(Ssh0, SignAlg), + MyPrivHostKey = get_host_key(SignAlg, Opts), MyPubHostKey = extract_public_key(MyPrivHostKey), H = kex_hash(Ssh0, MyPubHostKey, sha(Curve), {PeerPublic, MyPublic, K}), H_SIG = sign(H, sha(SignAlg), MyPrivHostKey), @@ -686,12 +682,13 @@ handle_kex_ecdh_init(#ssh_msg_kex_ecdh_init{q_c = PeerPublic}, exchanged_hash = H, session_id = sid(Ssh1, H)}} catch - _:_ -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Peer ECDH public key is invalid"}, - invalid_peer_public_key) + Class:Error -> + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("ECDH compute key failed in server: ~p:~p~n" + "Kex: ~p, Curve: ~p~n" + "PeerPublic: ~p", + [Class,Error,Kex,Curve,PeerPublic]) + ) end. handle_kex_ecdh_reply(#ssh_msg_kex_ecdh_reply{public_host_key = PeerPubHostKey, @@ -713,19 +710,16 @@ handle_kex_ecdh_reply(#ssh_msg_kex_ecdh_reply{public_host_key = PeerPubHostKey, exchanged_hash = H, session_id = sid(Ssh, H)})}; Error -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed"}, - Error) + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("ECDH reply failed. Verify host key: ~p",[Error]) + ) end catch - _:_ -> - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Peer ECDH public key is invalid"}, - invalid_peer_public_key) + Class:Error -> + ?DISCONNECT(?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + io_lib:format("Peer ECDH public key seem invalid: ~p:~p", + [Class,Error]) + ) end. @@ -735,11 +729,11 @@ handle_new_keys(#ssh_msg_newkeys{}, Ssh0) -> #ssh{} = Ssh -> {ok, Ssh} catch - _C:_Error -> %% TODO: Throw earlier .... - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = "Install alg failed" - }) + Class:Error -> %% TODO: Throw earlier ... + ?DISCONNECT(?SSH_DISCONNECT_PROTOCOL_ERROR, + io_lib:format("Install alg failed: ~p:~p", + [Class,Error]) + ) end. @@ -772,8 +766,7 @@ ext_info_message(#ssh{role=server, send_ext_info=true, opts = Opts} = Ssh0) -> AlgsList = lists:map(fun erlang:atom_to_list/1, - proplists:get_value(public_key, - ?GET_OPT(preferred_algorithms, Opts))), + ?GET_OPT(pref_public_key_algs, Opts)), Msg = #ssh_msg_ext_info{nr_extensions = 1, data = [{"server-sig-algs", string:join(AlgsList,",")}] }, @@ -791,10 +784,8 @@ sid(#ssh{session_id = Id}, _) -> Id. %% %% The host key should be read from storage %% -get_host_key(SSH, SignAlg) -> - #ssh{key_cb = {KeyCb,KeyCbOpts}, opts = Opts} = SSH, - UserOpts = ?GET_OPT(user_options, Opts), - case KeyCb:host_key(SignAlg, [{key_cb_private,KeyCbOpts}|UserOpts]) of +get_host_key(SignAlg, Opts) -> + case call_KeyCb(host_key, [SignAlg], Opts) of {ok, PrivHostKey} -> %% Check the key - the KeyCb may be a buggy plugin case valid_key_sha_alg(PrivHostKey, SignAlg) of @@ -805,6 +796,11 @@ get_host_key(SSH, SignAlg) -> exit({error, {Result, unsupported_key_type}}) end. +call_KeyCb(F, Args, Opts) -> + {KeyCb,KeyCbOpts} = ?GET_OPT(key_cb, Opts), + UserOpts = ?GET_OPT(user_options, Opts), + apply(KeyCb, F, Args ++ [[{key_cb_private,KeyCbOpts}|UserOpts]]). + extract_public_key(#'RSAPrivateKey'{modulus = N, publicExponent = E}) -> #'RSAPublicKey'{modulus = N, publicExponent = E}; extract_public_key(#'DSAPrivateKey'{y = Y, p = P, q = Q, g = G}) -> @@ -812,6 +808,8 @@ extract_public_key(#'DSAPrivateKey'{y = Y, p = P, q = Q, g = G}) -> extract_public_key(#'ECPrivateKey'{parameters = {namedCurve,OID}, publicKey = Q}) -> {#'ECPoint'{point=Q}, {namedCurve,OID}}; +extract_public_key({ed_pri, Alg, Pub, _Priv}) -> + {ed_pub, Alg, Pub}; extract_public_key(#{engine:=_, key_id:=_, algorithm:=Alg} = M) -> case {Alg, crypto:privkey_to_pubkey(Alg, M)} of {rsa, [E,N]} -> @@ -871,29 +869,30 @@ accepted_host(Ssh, PeerName, Public, Opts) -> end. -yes_no(Ssh, Prompt) -> - (Ssh#ssh.io_cb):yes_no(Prompt, Ssh#ssh.opts). +yes_no(#ssh{opts=Opts}, Prompt) -> + IoCb = ?GET_INTERNAL_OPT(io_cb, Opts, ssh_io), + IoCb:yes_no(Prompt, Opts). fmt_hostkey('ssh-rsa') -> "RSA"; fmt_hostkey('ssh-dss') -> "DSA"; +fmt_hostkey('ssh-ed25519') -> "ED25519"; +fmt_hostkey('ssh-ed448') -> "ED448"; fmt_hostkey(A) when is_atom(A) -> fmt_hostkey(atom_to_list(A)); fmt_hostkey("ecdsa"++_) -> "ECDSA"; fmt_hostkey(X) -> X. -known_host_key(#ssh{opts = Opts, key_cb = {KeyCb,KeyCbOpts}, peer = {PeerName,_}} = Ssh, +known_host_key(#ssh{opts = Opts, peer = {PeerName,_}} = Ssh, Public, Alg) -> - UserOpts = ?GET_OPT(user_options, Opts), - case is_host_key(KeyCb, Public, PeerName, Alg, [{key_cb_private,KeyCbOpts}|UserOpts]) of - {_,true} -> + case call_KeyCb(is_host_key, [Public, PeerName, Alg], Opts) of + true -> ok; - {_,false} -> + false -> DoAdd = ?GET_OPT(save_accepted_host, Opts), case accepted_host(Ssh, PeerName, Public, Opts) of true when DoAdd == true -> - {_,R} = add_host_key(KeyCb, PeerName, Public, [{key_cb_private,KeyCbOpts}|UserOpts]), - R; + call_KeyCb(add_host_key, [PeerName, Public], Opts); true when DoAdd == false -> ok; false -> @@ -903,13 +902,6 @@ known_host_key(#ssh{opts = Opts, key_cb = {KeyCb,KeyCbOpts}, peer = {PeerName,_} end end. -is_host_key(KeyCb, Public, PeerName, Alg, Data) -> - {KeyCb, KeyCb:is_host_key(Public, PeerName, Alg, Data)}. - -add_host_key(KeyCb, PeerName, Public, Data) -> - {KeyCb, KeyCb:add_host_key(PeerName, Public, Data)}. - - %% Each of the algorithm strings MUST be a comma-separated list of %% algorithm names (see ''Algorithm Naming'' in [SSH-ARCH]). Each %% supported (allowed) algorithm MUST be listed in order of preference. @@ -993,13 +985,14 @@ select_algorithm(Role, Client, Server, Opts) -> %%% the exchanged MAC algorithms are ignored and there doesn't have to be %%% a matching MAC. -aead_gcm_simultan('[email protected]', _) -> {'AEAD_AES_128_GCM', 'AEAD_AES_128_GCM'}; -aead_gcm_simultan('[email protected]', _) -> {'AEAD_AES_256_GCM', 'AEAD_AES_256_GCM'}; -aead_gcm_simultan('AEAD_AES_128_GCM', _) -> {'AEAD_AES_128_GCM', 'AEAD_AES_128_GCM'}; -aead_gcm_simultan('AEAD_AES_256_GCM', _) -> {'AEAD_AES_256_GCM', 'AEAD_AES_256_GCM'}; -aead_gcm_simultan(_, 'AEAD_AES_128_GCM') -> {'AEAD_AES_128_GCM', 'AEAD_AES_128_GCM'}; -aead_gcm_simultan(_, 'AEAD_AES_256_GCM') -> {'AEAD_AES_256_GCM', 'AEAD_AES_256_GCM'}; -aead_gcm_simultan(Cipher, Mac) -> {Cipher,Mac}. +aead_gcm_simultan('[email protected]', _) -> {'AEAD_AES_128_GCM', 'AEAD_AES_128_GCM'}; +aead_gcm_simultan('[email protected]', _) -> {'AEAD_AES_256_GCM', 'AEAD_AES_256_GCM'}; +aead_gcm_simultan('AEAD_AES_128_GCM'=C, _) -> {C, C}; +aead_gcm_simultan('AEAD_AES_256_GCM'=C, _) -> {C, C}; +aead_gcm_simultan(_, 'AEAD_AES_128_GCM'=C) -> {C, C}; +aead_gcm_simultan(_, 'AEAD_AES_256_GCM'=C) -> {C, C}; +aead_gcm_simultan('[email protected]'=C, _)-> {C, C}; +aead_gcm_simultan(Cipher, Mac) -> {Cipher,Mac}. select_encrypt_decrypt(client, Client, Server) -> @@ -1057,9 +1050,7 @@ install_alg(Dir, SSH) -> alg_setup(snd, SSH) -> ALG = SSH#ssh.algorithms, - SSH#ssh{kex = ALG#alg.kex, - hkey = ALG#alg.hkey, - encrypt = ALG#alg.encrypt, + SSH#ssh{encrypt = ALG#alg.encrypt, send_mac = ALG#alg.send_mac, send_mac_size = mac_digest_size(ALG#alg.send_mac), compress = ALG#alg.compress, @@ -1071,9 +1062,7 @@ alg_setup(snd, SSH) -> alg_setup(rcv, SSH) -> ALG = SSH#ssh.algorithms, - SSH#ssh{kex = ALG#alg.kex, - hkey = ALG#alg.hkey, - decrypt = ALG#alg.decrypt, + SSH#ssh{decrypt = ALG#alg.decrypt, recv_mac = ALG#alg.recv_mac, recv_mac_size = mac_digest_size(ALG#alg.recv_mac), decompress = ALG#alg.decompress, @@ -1115,10 +1104,9 @@ select_all(CL, SL) when length(CL) + length(SL) < ?MAX_NUM_ALGORITHMS -> %% algorithms used by client and server (client pref) lists:map(fun(ALG) -> list_to_atom(ALG) end, (CL -- A)); select_all(CL, SL) -> - Err = lists:concat(["Received too many algorithms (",length(CL),"+",length(SL)," >= ",?MAX_NUM_ALGORITHMS,")."]), - ssh_connection_handler:disconnect( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = Err}). + Error = lists:concat(["Received too many algorithms (",length(CL),"+",length(SL)," >= ",?MAX_NUM_ALGORITHMS,")."]), + ?DISCONNECT(?SSH_DISCONNECT_PROTOCOL_ERROR, + Error). select([], []) -> @@ -1152,7 +1140,7 @@ pack(PlainText, encrypt = CryptoAlg} = Ssh0, PacketLenDeviationForTests) when is_binary(PlainText) -> {Ssh1, CompressedPlainText} = compress(Ssh0, PlainText), - {EcryptedPacket, MAC, Ssh3} = + {FinalPacket, Ssh3} = case pkt_type(CryptoAlg) of common -> PaddingLen = padding_length(4+1+size(CompressedPlainText), Ssh0), @@ -1161,16 +1149,15 @@ pack(PlainText, PlainPacketData = <<?UINT32(PlainPacketLen),?BYTE(PaddingLen), CompressedPlainText/binary, Padding/binary>>, {Ssh2, EcryptedPacket0} = encrypt(Ssh1, PlainPacketData), MAC0 = mac(MacAlg, MacKey, SeqNum, PlainPacketData), - {EcryptedPacket0, MAC0, Ssh2}; + {<<EcryptedPacket0/binary,MAC0/binary>>, Ssh2}; aead -> PaddingLen = padding_length(1+size(CompressedPlainText), Ssh0), Padding = ssh_bits:random(PaddingLen), PlainPacketLen = 1 + PaddingLen + size(CompressedPlainText) + PacketLenDeviationForTests, PlainPacketData = <<?BYTE(PaddingLen), CompressedPlainText/binary, Padding/binary>>, - {Ssh2, {EcryptedPacket0,MAC0}} = encrypt(Ssh1, {<<?UINT32(PlainPacketLen)>>,PlainPacketData}), - {<<?UINT32(PlainPacketLen),EcryptedPacket0/binary>>, MAC0, Ssh2} + {Ssh2, {EcryptedPacket0,MAC0}} = encrypt(Ssh1, <<?UINT32(PlainPacketLen),PlainPacketData/binary>>), + {<<EcryptedPacket0/binary,MAC0/binary>>, Ssh2} end, - FinalPacket = [EcryptedPacket, MAC], Ssh = Ssh3#ssh{send_sequence = (SeqNum+1) band 16#ffffffff}, {FinalPacket, Ssh}. @@ -1190,31 +1177,31 @@ padding_length(Size, #ssh{encrypt_block_size = BlockSize, -handle_packet_part(<<>>, Encrypted0, undefined, #ssh{decrypt = CryptoAlg} = Ssh0) -> +handle_packet_part(<<>>, Encrypted0, AEAD0, undefined, #ssh{decrypt = CryptoAlg} = Ssh0) -> %% New ssh packet case get_length(pkt_type(CryptoAlg), Encrypted0, Ssh0) of get_more -> %% too short to get the length - {get_more, <<>>, Encrypted0, undefined, Ssh0}; + {get_more, <<>>, Encrypted0, AEAD0, undefined, Ssh0}; - {ok, PacketLen, _, _, _} when PacketLen > ?SSH_MAX_PACKET_SIZE -> + {ok, PacketLen, _, _, _, _} when PacketLen > ?SSH_MAX_PACKET_SIZE -> %% far too long message than expected {error, {exceeds_max_size,PacketLen}}; - {ok, PacketLen, Decrypted, Encrypted1, + {ok, PacketLen, Decrypted, Encrypted1, AEAD, #ssh{recv_mac_size = MacSize} = Ssh1} -> %% enough bytes so we got the length and can calculate how many %% more bytes to expect for a full packet TotalNeeded = (4 + PacketLen + MacSize), - handle_packet_part(Decrypted, Encrypted1, TotalNeeded, Ssh1) + handle_packet_part(Decrypted, Encrypted1, AEAD, TotalNeeded, Ssh1) end; -handle_packet_part(DecryptedPfx, EncryptedBuffer, TotalNeeded, Ssh0) +handle_packet_part(DecryptedPfx, EncryptedBuffer, AEAD, TotalNeeded, Ssh0) when (size(DecryptedPfx)+size(EncryptedBuffer)) < TotalNeeded -> %% need more bytes to finalize the packet - {get_more, DecryptedPfx, EncryptedBuffer, TotalNeeded, Ssh0}; + {get_more, DecryptedPfx, EncryptedBuffer, AEAD, TotalNeeded, Ssh0}; -handle_packet_part(DecryptedPfx, EncryptedBuffer, TotalNeeded, +handle_packet_part(DecryptedPfx, EncryptedBuffer, AEAD, TotalNeeded, #ssh{recv_mac_size = MacSize, decrypt = CryptoAlg} = Ssh0) -> %% enough bytes to decode the packet. @@ -1232,8 +1219,7 @@ handle_packet_part(DecryptedPfx, EncryptedBuffer, TotalNeeded, {packet_decrypted, DecompressedPayload, NextPacketBytes, Ssh} end; aead -> - PacketLenBin = DecryptedPfx, - case decrypt(Ssh0, {PacketLenBin,EncryptedSfx,Mac}) of + case decrypt(Ssh0, {AEAD,EncryptedSfx,Mac}) of {Ssh1, error} -> {bad_mac, Ssh1}; {Ssh1, DecryptedSfx} -> @@ -1250,21 +1236,29 @@ get_length(common, EncryptedBuffer, #ssh{decrypt_block_size = BlockSize} = Ssh0) <<EncBlock:BlockSize/binary, EncryptedRest/binary>> = EncryptedBuffer, {Ssh, <<?UINT32(PacketLen),_/binary>> = Decrypted} = decrypt(Ssh0, EncBlock), - {ok, PacketLen, Decrypted, EncryptedRest, Ssh}; + {ok, PacketLen, Decrypted, EncryptedRest, <<>>, Ssh}; false -> get_more end; + get_length(aead, EncryptedBuffer, Ssh) -> - case size(EncryptedBuffer) >= 4 of - true -> + case {size(EncryptedBuffer) >= 4, Ssh#ssh.decrypt} of + {true, '[email protected]'} -> + <<EncryptedLen:4/binary, EncryptedRest/binary>> = EncryptedBuffer, + {Ssh1, PacketLenBin} = decrypt(Ssh, {length,EncryptedLen}), + <<?UINT32(PacketLen)>> = PacketLenBin, + {ok, PacketLen, PacketLenBin, EncryptedRest, EncryptedLen, Ssh1}; + {true, _} -> <<?UINT32(PacketLen), EncryptedRest/binary>> = EncryptedBuffer, - {ok, PacketLen, <<?UINT32(PacketLen)>>, EncryptedRest, Ssh}; - false -> + {ok, PacketLen, <<?UINT32(PacketLen)>>, EncryptedRest, <<?UINT32(PacketLen)>>, Ssh}; + {false, _} -> get_more end. + pkt_type('AEAD_AES_128_GCM') -> aead; pkt_type('AEAD_AES_256_GCM') -> aead; +pkt_type('[email protected]') -> aead; pkt_type(_) -> common. payload(<<PacketLen:32, PaddingLen:8, PayloadAndPadding/binary>>) -> @@ -1369,11 +1363,32 @@ cipher('aes192-ctr') -> cipher('aes256-ctr') -> #cipher_data{key_bytes = 32, iv_bytes = 16, - block_bytes = 16}. + block_bytes = 16}; + +cipher('[email protected]') -> % FIXME: Verify!! + #cipher_data{key_bytes = 32, + iv_bytes = 12, + block_bytes = 8}. + encrypt_init(#ssh{encrypt = none} = Ssh) -> {ok, Ssh}; +encrypt_init(#ssh{encrypt = '[email protected]', role = client} = Ssh) -> + %% [email protected] uses two independent crypto streams, one (chacha20) + %% for the length used in stream mode, and the other (chacha20-poly1305) as AEAD for + %% the payload and to MAC the length||payload. + %% See draft-josefsson-ssh-chacha20-poly1305-openssh-00 + <<K2:32/binary,K1:32/binary>> = hash(Ssh, "C", 512), + {ok, Ssh#ssh{encrypt_keys = {K1,K2} + % encrypt_block_size = 16, %default = 8. What to set it to? 64 (openssl chacha.h) + % ctx and iv is setup for each packet + }}; +encrypt_init(#ssh{encrypt = '[email protected]', role = server} = Ssh) -> + <<K2:32/binary,K1:32/binary>> = hash(Ssh, "D", 512), + {ok, Ssh#ssh{encrypt_keys = {K1,K2} + % encrypt_block_size = 16, %default = 8. What to set it to? + }}; encrypt_init(#ssh{encrypt = 'AEAD_AES_128_GCM', role = client} = Ssh) -> IV = hash(Ssh, "A", 12*8), <<K:16/binary>> = hash(Ssh, "C", 128), @@ -1474,18 +1489,40 @@ encrypt_final(Ssh) -> encrypt(#ssh{encrypt = none} = Ssh, Data) -> {Ssh, Data}; +encrypt(#ssh{encrypt = '[email protected]', + encrypt_keys = {K1,K2}, + send_sequence = Seq} = Ssh, + <<LenData:4/binary, PayloadData/binary>>) -> + %% Encrypt length + IV1 = <<0:8/unit:8, Seq:8/unit:8>>, + {_,EncLen} = crypto:stream_encrypt(crypto:stream_init(chacha20, K1, IV1), + LenData), + %% Encrypt payload + IV2 = <<1:8/little-unit:8, Seq:8/unit:8>>, + {_,EncPayloadData} = crypto:stream_encrypt(crypto:stream_init(chacha20, K2, IV2), + PayloadData), + + %% MAC tag + {_,PolyKey} = crypto:stream_encrypt(crypto:stream_init(chacha20, K2, <<0:8/unit:8,Seq:8/unit:8>>), + <<0:32/unit:8>>), + EncBytes = <<EncLen/binary,EncPayloadData/binary>>, + Ctag = crypto:poly1305(PolyKey, EncBytes), + %% Result + {Ssh, {EncBytes,Ctag}}; encrypt(#ssh{encrypt = 'AEAD_AES_128_GCM', encrypt_keys = K, - encrypt_ctx = IV0} = Ssh, Data={_AAD,_Ptext}) -> - Enc = {_Ctext,_Ctag} = crypto:block_encrypt(aes_gcm, K, IV0, Data), + encrypt_ctx = IV0} = Ssh, + <<LenData:4/binary, PayloadData/binary>>) -> + {Ctext,Ctag} = crypto:block_encrypt(aes_gcm, K, IV0, {LenData,PayloadData}), IV = next_gcm_iv(IV0), - {Ssh#ssh{encrypt_ctx = IV}, Enc}; + {Ssh#ssh{encrypt_ctx = IV}, {<<LenData/binary,Ctext/binary>>,Ctag}}; encrypt(#ssh{encrypt = 'AEAD_AES_256_GCM', encrypt_keys = K, - encrypt_ctx = IV0} = Ssh, Data={_AAD,_Ptext}) -> - Enc = {_Ctext,_Ctag} = crypto:block_encrypt(aes_gcm, K, IV0, Data), + encrypt_ctx = IV0} = Ssh, + <<LenData:4/binary, PayloadData/binary>>) -> + {Ctext,Ctag} = crypto:block_encrypt(aes_gcm, K, IV0, {LenData,PayloadData}), IV = next_gcm_iv(IV0), - {Ssh#ssh{encrypt_ctx = IV}, Enc}; + {Ssh#ssh{encrypt_ctx = IV}, {<<LenData/binary,Ctext/binary>>,Ctag}}; encrypt(#ssh{encrypt = '3des-cbc', encrypt_keys = {K1,K2,K3}, encrypt_ctx = IV0} = Ssh, Data) -> @@ -1518,6 +1555,14 @@ encrypt(#ssh{encrypt = 'aes256-ctr', decrypt_init(#ssh{decrypt = none} = Ssh) -> {ok, Ssh}; +decrypt_init(#ssh{decrypt = '[email protected]', role = client} = Ssh) -> + <<K2:32/binary,K1:32/binary>> = hash(Ssh, "D", 512), + {ok, Ssh#ssh{decrypt_keys = {K1,K2} + }}; +decrypt_init(#ssh{decrypt = '[email protected]', role = server} = Ssh) -> + <<K2:32/binary,K1:32/binary>> = hash(Ssh, "C", 512), + {ok, Ssh#ssh{decrypt_keys = {K1,K2} + }}; decrypt_init(#ssh{decrypt = 'AEAD_AES_128_GCM', role = client} = Ssh) -> IV = hash(Ssh, "B", 12*8), <<K:16/binary>> = hash(Ssh, "D", 128), @@ -1618,6 +1663,31 @@ decrypt_final(Ssh) -> decrypt(Ssh, <<>>) -> {Ssh, <<>>}; +decrypt(#ssh{decrypt = '[email protected]', + decrypt_keys = {K1,_K2}, + recv_sequence = Seq} = Ssh, {length,EncryptedLen}) -> + {_State,PacketLenBin} = + crypto:stream_decrypt(crypto:stream_init(chacha20, K1, <<0:8/unit:8, Seq:8/unit:8>>), + EncryptedLen), + {Ssh, PacketLenBin}; +decrypt(#ssh{decrypt = '[email protected]', + decrypt_keys = {_K1,K2}, + recv_sequence = Seq} = Ssh, {AAD,Ctext,Ctag}) -> + %% The length is already decoded and used to divide the input + %% Check the mac (important that it is timing-safe): + {_,PolyKey} = + crypto:stream_encrypt(crypto:stream_init(chacha20, K2, <<0:8/unit:8,Seq:8/unit:8>>), + <<0:32/unit:8>>), + case equal_const_time(Ctag, crypto:poly1305(PolyKey, <<AAD/binary,Ctext/binary>>)) of + true -> + %% MAC is ok, decode + IV2 = <<1:8/little-unit:8, Seq:8/unit:8>>, + {_,PlainText} = + crypto:stream_decrypt(crypto:stream_init(chacha20,K2,IV2), Ctext), + {Ssh, PlainText}; + false -> + {Ssh,error} + end; decrypt(#ssh{decrypt = none} = Ssh, Data) -> {Ssh, Data}; decrypt(#ssh{decrypt = 'AEAD_AES_128_GCM', @@ -1760,7 +1830,7 @@ send_mac_init(SSH) -> Key = hash(SSH, "F", KeySize), {ok, SSH#ssh { send_mac_key = Key }} end; - aead -> + _ -> %% Not applicable {ok, SSH} end. @@ -1781,7 +1851,7 @@ recv_mac_init(SSH) -> Key = hash(SSH, "E", 8*mac_key_bytes(SSH#ssh.recv_mac)), {ok, SSH#ssh { recv_mac_key = Key }} end; - aead -> + _ -> %% Not applicable {ok, SSH} end. @@ -1810,7 +1880,7 @@ mac('hmac-sha2-512', Key, SeqNum, Data) -> hash(_SSH, _Char, 0) -> <<>>; hash(SSH, Char, N) -> - HashAlg = sha(SSH#ssh.kex), + HashAlg = sha(SSH#ssh.algorithms#alg.kex), K = SSH#ssh.shared_secret, H = SSH#ssh.exchanged_hash, K1 = crypto:hash(HashAlg, [K, H, Char, SSH#ssh.session_id]), @@ -1828,6 +1898,7 @@ hash(K, H, Ki, N, HashAlg) -> kex_hash(SSH, Key, HashAlg, Args) -> crypto:hash(HashAlg, kex_plaintext(SSH,Key,Args)). + kex_plaintext(SSH, Key, Args) -> EncodedKey = public_key:ssh_encode(Key, ssh2_pubkey), <<?Estring(SSH#ssh.c_version), ?Estring(SSH#ssh.s_version), @@ -1835,13 +1906,19 @@ kex_plaintext(SSH, Key, Args) -> ?Ebinary(EncodedKey), (kex_alg_dependent(Args))/binary>>. + +kex_alg_dependent({Q_c, Q_s, K}) when is_binary(Q_c), is_binary(Q_s) -> + %% ecdh + <<?Ebinary(Q_c), ?Ebinary(Q_s), ?Empint(K)>>; + kex_alg_dependent({E, F, K}) -> - %% diffie-hellman and ec diffie-hellman (with E = Q_c, F = Q_s) + %% diffie-hellman <<?Empint(E), ?Empint(F), ?Empint(K)>>; -kex_alg_dependent({-1, _, -1, _, _, E, F, K}) -> +kex_alg_dependent({-1, NBits, -1, Prime, Gen, E, F, K}) -> %% ssh_msg_kex_dh_gex_request_old - <<?Empint(E), ?Empint(F), ?Empint(K)>>; + <<?Euint32(NBits), + ?Empint(Prime), ?Empint(Gen), ?Empint(E), ?Empint(F), ?Empint(K)>>; kex_alg_dependent({Min, NBits, Max, Prime, Gen, E, F, K}) -> %% diffie-hellman group exchange @@ -1865,6 +1942,11 @@ valid_key_sha_alg(#'RSAPrivateKey'{}, 'ssh-rsa' ) -> true; valid_key_sha_alg({_, #'Dss-Parms'{}}, 'ssh-dss') -> true; valid_key_sha_alg(#'DSAPrivateKey'{}, 'ssh-dss') -> true; +valid_key_sha_alg({ed_pub, ed25519,_}, 'ssh-ed25519') -> true; +valid_key_sha_alg({ed_pri, ed25519,_,_},'ssh-ed25519') -> true; +valid_key_sha_alg({ed_pub, ed448,_}, 'ssh-ed448') -> true; +valid_key_sha_alg({ed_pri, ed448,_,_}, 'ssh-ed448') -> true; + valid_key_sha_alg({#'ECPoint'{},{namedCurve,OID}}, Alg) -> valid_key_sha_alg_ec(OID, Alg); valid_key_sha_alg(#'ECPrivateKey'{parameters = {namedCurve,OID}}, Alg) -> valid_key_sha_alg_ec(OID, Alg); valid_key_sha_alg(_, _) -> false. @@ -1874,15 +1956,17 @@ valid_key_sha_alg_ec(OID, Alg) -> Alg == list_to_atom("ecdsa-sha2-" ++ binary_to_list(Curve)). +-dialyzer({no_match, public_algo/1}). + public_algo(#'RSAPublicKey'{}) -> 'ssh-rsa'; % FIXME: Not right with draft-curdle-rsa-sha2 public_algo({_, #'Dss-Parms'{}}) -> 'ssh-dss'; +public_algo({ed_pub, ed25519,_}) -> 'ssh-ed25519'; +public_algo({ed_pub, ed448,_}) -> 'ssh-ed448'; public_algo({#'ECPoint'{},{namedCurve,OID}}) -> Curve = public_key:oid2ssh_curvename(OID), list_to_atom("ecdsa-sha2-" ++ binary_to_list(Curve)). - - sha('ssh-rsa') -> sha; sha('rsa-sha2-256') -> sha256; sha('rsa-sha2-384') -> sha384; @@ -1891,6 +1975,8 @@ sha('ssh-dss') -> sha; sha('ecdsa-sha2-nistp256') -> sha(secp256r1); sha('ecdsa-sha2-nistp384') -> sha(secp384r1); sha('ecdsa-sha2-nistp521') -> sha(secp521r1); +sha('ssh-ed25519') -> undefined; % Included in the spec of ed25519 +sha('ssh-ed448') -> undefined; % Included in the spec of ed448 sha(secp256r1) -> sha256; sha(secp384r1) -> sha384; sha(secp521r1) -> sha512; @@ -1907,6 +1993,11 @@ sha(?'secp521r1') -> sha(secp521r1); sha('ecdh-sha2-nistp256') -> sha(secp256r1); sha('ecdh-sha2-nistp384') -> sha(secp384r1); sha('ecdh-sha2-nistp521') -> sha(secp521r1); +sha('curve25519-sha256' ) -> sha256; +sha('[email protected]' ) -> sha256; +sha('curve448-sha512') -> sha512; +sha(x25519) -> sha256; +sha(x448) -> sha512; sha(Str) when is_list(Str), length(Str)<50 -> sha(list_to_atom(Str)). @@ -1918,6 +2009,7 @@ mac_key_bytes('hmac-sha2-256')-> 32; mac_key_bytes('hmac-sha2-512')-> 64; mac_key_bytes('AEAD_AES_128_GCM') -> 0; mac_key_bytes('AEAD_AES_256_GCM') -> 0; +mac_key_bytes('[email protected]') -> 0; mac_key_bytes(none) -> 0. mac_digest_size('hmac-sha1') -> 20; @@ -1928,6 +2020,7 @@ mac_digest_size('hmac-sha2-256') -> 32; mac_digest_size('hmac-sha2-512') -> 64; mac_digest_size('AEAD_AES_128_GCM') -> 16; mac_digest_size('AEAD_AES_256_GCM') -> 16; +mac_digest_size('[email protected]') -> 16; mac_digest_size(none) -> 0. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -1950,11 +2043,13 @@ parallell_gen_key(Ssh = #ssh{keyex_key = {x, {G, P}}, Ssh#ssh{keyex_key = {{Private, Public}, {G, P}}}. +generate_key(ecdh = Algorithm, Args) -> + crypto:generate_key(Algorithm, Args); generate_key(Algorithm, Args) -> {Public,Private} = crypto:generate_key(Algorithm, Args), {crypto:bytes_to_integer(Public), crypto:bytes_to_integer(Private)}. - + compute_key(Algorithm, OthersPublic, MyPrivate, Args) -> Shared = crypto:compute_key(Algorithm, OthersPublic, MyPrivate, Args), crypto:bytes_to_integer(Shared). @@ -1971,8 +2066,10 @@ dh_bits(#alg{encrypt = Encrypt, ecdh_curve('ecdh-sha2-nistp256') -> secp256r1; ecdh_curve('ecdh-sha2-nistp384') -> secp384r1; -ecdh_curve('ecdh-sha2-nistp521') -> secp521r1. - +ecdh_curve('ecdh-sha2-nistp521') -> secp521r1; +ecdh_curve('curve448-sha512' ) -> x448; +ecdh_curve('curve25519-sha256' ) -> x25519; +ecdh_curve('[email protected]' ) -> x25519. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% @@ -1988,15 +2085,10 @@ supported_algorithms(Key, BlackList) -> select_crypto_supported(L) -> - Sup = [{ec_curve,crypto_supported_curves()} | crypto:supports()], + Sup = crypto:supports(), [Name || {Name,CryptoRequires} <- L, crypto_supported(CryptoRequires, Sup)]. -crypto_supported_curves() -> - try crypto:ec_curves() - catch _:_ -> [] - end. - crypto_supported(Conditions, Supported) -> lists:all( fun({Tag,CryptoName}) when is_atom(CryptoName) -> crypto_name_supported(Tag,CryptoName,Supported); @@ -2006,7 +2098,11 @@ crypto_supported(Conditions, Supported) -> end, Conditions). crypto_name_supported(Tag, CryptoName, Supported) -> - lists:member(CryptoName, proplists:get_value(Tag,Supported,[])). + Vs = case proplists:get_value(Tag,Supported,[]) of + [] when Tag == curves -> crypto:ec_curves(); + L -> L + end, + lists:member(CryptoName, Vs). len_supported(Name, Len) -> try @@ -2037,7 +2133,58 @@ same(Algs) -> [{client2server,Algs}, {server2client,Algs}]. %% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%%% Compare two binaries in a timing safe maner. +%%% The time spent in comparing should not be different depending on where in the binaries they differ. +%%% This is to avoid a certain side-channel attac. +equal_const_time(X1, X2) -> equal_const_time(X1, X2, true). + +equal_const_time(<<B1,R1/binary>>, <<B2,R2/binary>>, Truth) -> + equal_const_time(R1, R2, Truth and (B1 == B2)); +equal_const_time(<<>>, <<>>, Truth) -> + Truth; +equal_const_time(_, _, _) -> + false. + +%%%-------- Remove CR, LF and following characters from a line + trim_tail(Str) -> lists:takewhile(fun(C) -> C=/=$\r andalso C=/=$\n end, Str). + +%%%################################################################ +%%%# +%%%# Tracing +%%%# + +dbg_trace(points, _, _) -> [alg, ssh_messages, raw_messages, hello]; + +dbg_trace(flags, hello, _) -> [c]; +dbg_trace(on, hello, _) -> dbg:tp(?MODULE,hello_version_msg,1,x), + dbg:tp(?MODULE,handle_hello_version,1,x); +dbg_trace(off, hello, _) -> dbg:ctpg(?MODULE,hello_version_msg,1), + dbg:ctpg(?MODULE,handle_hello_version,1); + +dbg_trace(C, raw_messages, A) -> dbg_trace(C, hello, A); +dbg_trace(C, ssh_messages, A) -> dbg_trace(C, hello, A); + +dbg_trace(flags, alg, _) -> [c]; +dbg_trace(on, alg, _) -> dbg:tpl(?MODULE,select_algorithm,4,x); +dbg_trace(off, alg, _) -> dbg:ctpl(?MODULE,select_algorithm,4); + + +dbg_trace(format, hello, {return_from,{?MODULE,hello_version_msg,1},Hello}) -> + ["Going to send hello message:\n", + Hello + ]; +dbg_trace(format, hello, {call,{?MODULE,handle_hello_version,[Hello]}}) -> + ["Received hello message:\n", + Hello + ]; + +dbg_trace(format, alg, {return_from,{?MODULE,select_algorithm,4},{ok,Alg}}) -> + ["Negotiated algorithms:\n", + wr_record(Alg) + ]. + +?wr_record(alg). diff --git a/lib/ssh/src/ssh_transport.hrl b/lib/ssh/src/ssh_transport.hrl index 87c3719514..f424a4ff63 100644 --- a/lib/ssh/src/ssh_transport.hrl +++ b/lib/ssh/src/ssh_transport.hrl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -220,6 +220,9 @@ %% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +-define(DISCONNECT(Code, DetailedText), + ssh_connection_handler:disconnect(Code, DetailedText, ?MODULE, ?LINE)). + -define(SSH_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT, 1). -define(SSH_DISCONNECT_PROTOCOL_ERROR, 2). -define(SSH_DISCONNECT_KEY_EXCHANGE_FAILED, 3). diff --git a/lib/ssh/src/ssh_xfer.erl b/lib/ssh/src/ssh_xfer.erl index e1680c120e..1d77ccb311 100644 --- a/lib/ssh/src/ssh_xfer.erl +++ b/lib/ssh/src/ssh_xfer.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2005-2016. All Rights Reserved. +%% Copyright Ericsson AB 2005-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -734,7 +734,7 @@ decode_ATTR(Vsn, <<?UINT32(Flags), Tail/binary>>) -> {Type,Tail2} = if Vsn =< 3 -> {?SSH_FILEXFER_TYPE_UNKNOWN, Tail}; - Vsn >= 5 -> + true -> <<?BYTE(T), TL/binary>> = Tail, {T, TL} end, diff --git a/lib/ssh/src/sshc_sup.erl b/lib/ssh/src/sshc_sup.erl index fd4d8a3c07..869de244ac 100644 --- a/lib/ssh/src/sshc_sup.erl +++ b/lib/ssh/src/sshc_sup.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -27,7 +27,7 @@ -behaviour(supervisor). --export([start_link/0, start_child/1, stop_child/1]). +-export([start_link/0, start_child/1]). %% Supervisor callback -export([init/1]). @@ -43,13 +43,6 @@ start_link() -> start_child(Args) -> supervisor:start_child(?MODULE, Args). -stop_child(Client) -> - spawn(fun() -> - ClientSup = whereis(?SSHC_SUP), - supervisor:terminate_child(ClientSup, Client) - end), - ok. - %%%========================================================================= %%% Supervisor callback %%%========================================================================= diff --git a/lib/ssh/src/sshd_sup.erl b/lib/ssh/src/sshd_sup.erl index 779a861a54..b5361abba5 100644 --- a/lib/ssh/src/sshd_sup.erl +++ b/lib/ssh/src/sshd_sup.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. diff --git a/lib/ssh/test/.gitignore b/lib/ssh/test/.gitignore new file mode 100644 index 0000000000..c9d5f086b3 --- /dev/null +++ b/lib/ssh/test/.gitignore @@ -0,0 +1,5 @@ + + +property_test/ssh_eqc_client_server_dirs/system +property_test/ssh_eqc_client_server_dirs/user + diff --git a/lib/ssh/test/Makefile b/lib/ssh/test/Makefile index 21359a0386..e221e94075 100644 --- a/lib/ssh/test/Makefile +++ b/lib/ssh/test/Makefile @@ -1,7 +1,7 @@ # # %CopyrightBegin% # -# Copyright Ericsson AB 2004-2017. All Rights Reserved. +# Copyright Ericsson AB 2004-2018. All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. @@ -34,11 +34,12 @@ VSN=$(GS_VSN) MODULES= \ ssh_algorithms_SUITE \ ssh_options_SUITE \ - ssh_renegotiate_SUITE \ ssh_basic_SUITE \ ssh_bench_SUITE \ + ssh_chan_behaviours_SUITE \ ssh_compat_SUITE \ ssh_connection_SUITE \ + ssh_dbg_SUITE \ ssh_engine_SUITE \ ssh_protocol_SUITE \ ssh_property_test_SUITE \ @@ -53,6 +54,8 @@ MODULES= \ ssh_key_cb_options \ ssh_key_cb_engine_keys \ ssh_trpt_test_lib \ + ssh_chan_behaviours_client \ + ssh_chan_behaviours_server \ ssh_echo_server \ ssh_bench_dev_null \ ssh_peername_sockname_server \ @@ -136,6 +139,6 @@ release_tests_spec: opt $(INSTALL_DATA) ssh.spec ssh_bench.spec ssh.cover "$(RELSYSDIR)" $(INSTALL_DATA) $(HRL_FILES_NEEDED_IN_TEST) "$(RELSYSDIR)" chmod -R u+w "$(RELSYSDIR)" - @tar cf - *_SUITE_data | (cd "$(RELSYSDIR)"; tar xf -) + @tar cf - *_SUITE_data property_test | (cd "$(RELSYSDIR)"; tar xf -) release_docs_spec: diff --git a/lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl b/lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl index 19e2754eba..f4b521356f 100644 --- a/lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl +++ b/lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2016. All Rights Reserved. +%% Copyright Ericsson AB 2004-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -58,6 +58,7 @@ %%% Properties: prop_seq(Config) -> + error_logger:tty(false), {ok,Pid} = ssh_eqc_event_handler:add_report_handler(), {_, _, Port} = init_daemon(Config), numtests(1000, @@ -66,16 +67,25 @@ prop_seq(Config) -> send_bad_sequence(Port, Delay, Pid), not any_relevant_error_report(Pid) catch - C:E -> io:format('~p:~p~n',[C,E]), + C:E:S -> ct:log("~p:~p~n~p",[C,E,S]), false end )). send_bad_sequence(Port, Delay, Pid) -> - {ok,S} = gen_tcp:connect("localhost",Port,[]), - gen_tcp:send(S,"Illegal info-string\r\n"), - ssh_test_lib:sleep_microsec(Delay), - gen_tcp:close(S). + send_bad_sequence(Port, Delay, Pid, 10). + +send_bad_sequence(Port, Delay, Pid, N) -> + case gen_tcp:connect("localhost",Port,[]) of + {ok,S} -> + gen_tcp:send(S,"Illegal info-string\r\n"), + ssh_test_lib:sleep_microsec(Delay), + gen_tcp:close(S); + + {error,econnreset} when N>0 -> + timer:sleep(1), + send_bad_sequence(Port, Delay, Pid, N-1) + end. any_relevant_error_report(Pid) -> {ok, Reports} = ssh_eqc_event_handler:get_reports(Pid), diff --git a/lib/ssh/test/property_test/ssh_eqc_client_server.erl b/lib/ssh/test/property_test/ssh_eqc_client_server.erl index 39d0b4e410..acb0faa0c7 100644 --- a/lib/ssh/test/property_test/ssh_eqc_client_server.erl +++ b/lib/ssh/test/property_test/ssh_eqc_client_server.erl @@ -22,25 +22,27 @@ -module(ssh_eqc_client_server). -compile(export_all). + +-proptest([proper]). --include_lib("common_test/include/ct.hrl"). - --ifdef(PROPER). -%% Proper is not supported. --else. --ifdef(TRIQ). -%% Proper is not supported. +-ifndef(PROPER). -else. +%% Only use proper +%% +%% Previously only EQC was supported, but the changes to support PROPER is not +%% just a wrapper. Since we do not have access to eqc we can't test the changes +%% so therefore eqc is disabeled. +%% However, with access to eqc it ought to be quite easy to re-enable eqc by +%% studying the diff. +-include_lib("proper/include/proper.hrl"). +-define(MOD_eqc,proper). + +-include_lib("common_test/include/ct.hrl"). %% Limit the testing time on CI server... this needs to be improved in % from total budget. -define(TESTINGTIME(Prop), eqc:testing_time(30,Prop)). - --include_lib("eqc/include/eqc.hrl"). --include_lib("eqc/include/eqc_statem.hrl"). --eqc_group_commands(true). - -define(SSH_DIR,"ssh_eqc_client_server_dirs"). -define(sec, *1000). @@ -51,10 +53,6 @@ port }). --record(conn,{ref, - srvr_ref - }). - -record(chan, {ref, conn_ref, subsystem, @@ -65,7 +63,7 @@ initialized = false, servers = [], % [#srvr{}] clients = [], - connections = [], % [#conn{}] + connections = [], channels = [], % [#chan{}] data_dir }). @@ -80,9 +78,8 @@ -define(SUBSYSTEMS, ["echo1", "echo2", "echo3", "echo4"]). --define(SERVER_ADDRESS, { {127,1,0,choose(1,254)}, % IP - choose(1024,65535) % Port - }). +-define(SERVER_ADDRESS, {127,0,0,1}). % Server listening IP. Darwin, Solaris & FreeBSD + % dislikes all other in 127.0.0.0/24 -define(SERVER_EXTRA_OPTIONS, [{parallel_login,bool()}] ). @@ -104,10 +101,12 @@ %% To be called as eqc:quickcheck( ssh_eqc_client_server:prop_seq() ). prop_seq() -> - ?TESTINGTIME(do_prop_seq(?SSH_DIR)). + error_logger:tty(false), + ?TESTINGTIME(do_prop_seq(?SSH_DIR)). %% To be called from a common_test test suite prop_seq(CT_Config) -> + error_logger:tty(false), do_prop_seq(full_path(?SSH_DIR, CT_Config)). @@ -124,10 +123,12 @@ full_path(SSHdir, CT_Config) -> SSHdir). %%%---- prop_parallel() -> + error_logger:tty(false), ?TESTINGTIME(do_prop_parallel(?SSH_DIR)). %% To be called from a common_test test suite prop_parallel(CT_Config) -> + error_logger:tty(false), do_prop_parallel(full_path(?SSH_DIR, CT_Config)). do_prop_parallel(DataDir) -> @@ -139,22 +140,22 @@ do_prop_parallel(DataDir) -> end). %%%---- -prop_parallel_multi() -> - ?TESTINGTIME(do_prop_parallel_multi(?SSH_DIR)). - -%% To be called from a common_test test suite -prop_parallel_multi(CT_Config) -> - do_prop_parallel_multi(full_path(?SSH_DIR, CT_Config)). - -do_prop_parallel_multi(DataDir) -> - setup_rsa(DataDir), - ?FORALL(Repetitions,?SHRINK(1,[10]), - ?FORALL(Cmds,parallel_commands(?MODULE), - ?ALWAYS(Repetitions, - begin - {H,Sf,Result} = run_parallel_commands(?MODULE,Cmds,[{data_dir,DataDir}]), - present_result(?MODULE, Cmds, {H,Sf,Result}, Result==ok) - end))). +%% prop_parallel_multi() -> +%% ?TESTINGTIME(do_prop_parallel_multi(?SSH_DIR)). + +%% %% To be called from a common_test test suite +%% prop_parallel_multi(CT_Config) -> +%% do_prop_parallel_multi(full_path(?SSH_DIR, CT_Config)). + +%% do_prop_parallel_multi(DataDir) -> +%% setup_rsa(DataDir), +%% ?FORALL(Repetitions,?SHRINK(1,[10]), +%% ?FORALL(Cmds,parallel_commands(?MODULE), +%% ?ALWAYS(Repetitions, +%% begin +%% {H,Sf,Result} = run_parallel_commands(?MODULE,Cmds,[{data_dir,DataDir}]), +%% present_result(?MODULE, Cmds, {H,Sf,Result}, Result==ok) +%% end))). %%%================================================================ %%% State machine spec @@ -169,13 +170,50 @@ initial_state(DataDir) -> ssh:start(). %%%---------------- -weight(S, ssh_send) -> 5*length([C || C<-S#state.channels, has_subsyst(C)]); -weight(S, ssh_start_subsyst) -> 3*length([C || C<-S#state.channels, no_subsyst(C)]); +weight(S, ssh_send) -> 20*length([C || C<-S#state.channels, has_subsyst(C)]); +weight(S, ssh_start_subsyst) -> 10*length([C || C<-S#state.channels, no_subsyst(C)]); weight(S, ssh_close_channel) -> 2*length([C || C<-S#state.channels, has_subsyst(C)]); -weight(S, ssh_open_channel) -> length(S#state.connections); +weight(S, ssh_open_channel) -> 2*length(S#state.connections); weight(_S, _) -> 1. %%%---------------- +fns() -> [initial_state, + ssh_server, + ssh_client, + ssh_open_connection, + ssh_close_connection, + ssh_open_channel, + ssh_close_channel, + ssh_start_subsyst, + ssh_send + ]. + +call_f(Name, Sfx) -> + case get({Name,Sfx}) of + undefined -> F = list_to_atom(lists:concat([Name,"_",Sfx])), + put({Name,Sfx}, F), + F; + F when is_atom(F) -> F + end. + +-define(call(Name, What, Args), apply(?MODULE, call_f(Name,What), Args)). + +symbolic_call(S,Name) -> {call, ?MODULE, Name, ?call(Name,args,[S])}. + +may_generate(S, F) -> ?call(F,pre,[S]). + +command(S) -> + frequency([{weight(S,F), symbolic_call(S,F)} || F <- fns(), + may_generate(S, F)] + ). + +precondition(S, {call,_M,F,As}) -> try ?call(F, pre, [S,As]) + catch _:undef -> try ?call(F,pre,[S]) catch _:undef -> true end + end. +next_state(S, Res, {call,_M,F,As}) -> try ?call(F, next, [S,Res,As]) catch _:undef -> S end. +postcondition(S, {call,_M,F,As}, Res) -> try ?call(F, post, [S,As,Res]) catch _:undef -> true end. + +%%%---------------- %%% Initialize initial_state_pre(S) -> not S#state.initialized. @@ -200,24 +238,34 @@ ssh_server_pre(S) -> S#state.initialized andalso ssh_server_args(_) -> [?SERVER_ADDRESS, {var,data_dir}, ?SERVER_EXTRA_OPTIONS]. -ssh_server({IP,Port}, DataDir, ExtraOptions) -> - ok(ssh:daemon(IP, Port, - [ - {system_dir, system_dir(DataDir)}, - {user_dir, user_dir(DataDir)}, - {subsystems, [{SS, {ssh_eqc_subsys, [SS]}} || SS <- ?SUBSYSTEMS]} - | ExtraOptions - ])). - -ssh_server_post(_S, _Args, {error,eaddrinuse}) -> true; -ssh_server_post(_S, _Args, Result) -> is_ok(Result). - -ssh_server_next(S, {error,eaddrinuse}, _) -> S; -ssh_server_next(S, Result, [{IP,Port},_,_]) -> - S#state{servers=[#srvr{ref = Result, - address = IP, - port = Port} - | S#state.servers]}. +ssh_server(IP0, DataDir, ExtraOptions) -> + case ssh:daemon(IP0, 0, + [ + {system_dir, system_dir(DataDir)}, + {user_dir, user_dir(DataDir)}, + {subsystems, [{SS, {ssh_eqc_subsys, [SS]}} || SS <- ?SUBSYSTEMS]} + | ExtraOptions + ]) of + {ok,DaemonRef} -> + case ssh:daemon_info(DaemonRef) of + {ok, Props} -> + Port = proplists:get_value(port,Props), + IP = proplists:get_value(ip,Props), + #srvr{ref = DaemonRef, + address = IP, + port = Port}; + Other -> + Other + end; + Other -> + Other + end. + +ssh_server_post(_S, _Args, #srvr{port=Port}) -> (0 < Port) andalso (Port < 65536); +ssh_server_post(_S, _Args, _) -> false. + +ssh_server_next(S, Srvr, _) -> + S#state{servers=[Srvr | S#state.servers]}. %%%---------------- %%% Start a new client @@ -271,8 +319,7 @@ ssh_open_connection(#srvr{address=Ip, port=Port}, DataDir) -> ssh_open_connection_post(_S, _Args, Result) -> is_ok(Result). -ssh_open_connection_next(S, ConnRef, [#srvr{ref=SrvrRef},_]) -> - S#state{connections=[#conn{ref=ConnRef, srvr_ref=SrvrRef}|S#state.connections]}. +ssh_open_connection_next(S, ConnRef, [_,_]) -> S#state{connections=[ConnRef|S#state.connections]}. %%%---------------- %%% Stop a new connection @@ -282,12 +329,12 @@ ssh_close_connection_pre(S) -> S#state.connections /= []. ssh_close_connection_args(S) -> [oneof(S#state.connections)]. -ssh_close_connection(#conn{ref=ConnectionRef}) -> ssh:close(ConnectionRef). +ssh_close_connection(ConnectionRef) -> ssh:close(ConnectionRef). -ssh_close_connection_next(S, _, [Conn=#conn{ref=ConnRef}]) -> - S#state{connections = S#state.connections--[Conn], - channels = [C || C <- S#state.channels, - C#chan.conn_ref /= ConnRef] +ssh_close_connection_next(S, _, [ConnRef]) -> + S#state{connections = S#state.connections--[ConnRef], + channels = [C || C <- S#state.channels, + C#chan.conn_ref /= ConnRef] }. %%%---------------- @@ -299,14 +346,14 @@ ssh_open_channel_pre(S) -> S#state.connections /= []. ssh_open_channel_args(S) -> [oneof(S#state.connections)]. %%% For re-arrangement in parallel tests. -ssh_open_channel_pre(S,[C]) -> lists:member(C,S#state.connections). +ssh_open_channel_pre(S,[C]) when is_record(S,state) -> lists:member(C,S#state.connections). -ssh_open_channel(#conn{ref=ConnectionRef}) -> +ssh_open_channel(ConnectionRef) -> ok(ssh_connection:session_channel(ConnectionRef, 20?sec)). ssh_open_channel_post(_S, _Args, Result) -> is_ok(Result). -ssh_open_channel_next(S, ChannelRef, [#conn{ref=ConnRef}]) -> +ssh_open_channel_next(S, ChannelRef, [ConnRef]) -> S#state{channels=[#chan{ref=ChannelRef, conn_ref=ConnRef} | S#state.channels]}. @@ -326,9 +373,7 @@ ssh_close_channel_next(S, _, [C]) -> S#state{channels = [Ci || Ci <- S#state.channels, sig(C) /= sig(Ci)]}. - sig(C) -> {C#chan.ref, C#chan.conn_ref}. - %%%---------------- %%% Start a sub system on a channel @@ -361,9 +406,10 @@ ssh_start_subsyst_next(S, _Result, [C,SS,Pid|_]) -> ssh_send_pre(S) -> lists:any(fun has_subsyst/1, S#state.channels). -ssh_send_args(S) -> [oneof(lists:filter(fun has_subsyst/1, S#state.channels)), - choose(0,1), - message()]. +ssh_send_args(S) -> + [oneof(lists:filter(fun has_subsyst/1, S#state.channels)), + choose(0,1), + message()]. %% For re-arrangement in parallel tests. ssh_send_pre(S, [C|_]) -> lists:member(C, S#state.channels). @@ -388,17 +434,17 @@ ssh_send(C=#chan{conn_ref=ConnectionRef, ref=ChannelRef, client_pid=Pid}, Type, end). ssh_send_blocking(_S, _Args) -> - true. + true. ssh_send_post(_S, [C,_,Msg], Response) when is_binary(Response) -> - Expected = ssh_eqc_subsys:response(modify_msg(C,Msg), C#chan.subsystem), + Expected = ssh_eqc_subsys:response(modify_msg(C,Msg), C#chan.subsystem), case Response of Expected -> true; _ -> {send_failed, size(Response), size(Expected)} end; ssh_send_post(_S, _Args, Response) -> - {error,Response}. + {error,Response}. modify_msg(_, <<>>) -> <<>>; @@ -440,7 +486,11 @@ present_result(_Module, Cmds, _Triple, true) -> true))))); present_result(Module, Cmds, Triple, false) -> - pretty_commands(Module, Cmds, Triple, [{show_states,true}], false). + pretty_comands(Module, Cmds, Triple, [{show_states,true}], false), + false. % Proper dislikes non-boolean results while eqc treats non-true as false. + +pretty_comands(Module, Cmds, Triple, Opts, Bool) -> + ct:log("Module = ~p,~n Cmds = ~p,~n Triple = ~p,~n Opts = ~p,~n Bool = ~p",[Module, Cmds, Triple, Opts, Bool]). @@ -476,23 +526,35 @@ traverse_commands(Fseq, Fpar, {Seq, ParLs}) -> lists:append([Fseq(Seq)|Fpar(ParL print_frequencies() -> print_frequencies(10). print_frequencies(Ngroups) -> fun([]) -> io:format('Empty list!~n',[]); - (L ) -> print_frequencies(L,Ngroups,0,element(1,lists:last(L))) + (L ) -> + try + M = lists:last(L), + Max = if is_integer(M) -> M; + is_tuple(M) -> element(1,L) + end, + print_frequencies(L,Ngroups,0,Max) + catch + C:E:S -> + ct:pal("~p:~p ~p:~p~n~p~n~p",[?MODULE,?LINE,C,E,S,L]) + end end. + print_frequencies(Ngroups, MaxValue) -> fun(L) -> print_frequencies(L,Ngroups,0,MaxValue) end. print_frequencies(L, N, Min, Max) when N>Max -> print_frequencies(L++[{N,0}], N, Min, N); -print_frequencies(L, N, Min, Max) -> -%%io:format('L=~p~n',[L]), +print_frequencies(L, N, Min, Max0) -> try + Interval = round((Max0-Min)/N), + Max = Max0 + (Max0 rem Interval), IntervalUpperLimits = lists:reverse( - [Max | tl(lists:reverse(lists:seq(Min,Max,round((Max-Min)/N))))] + [Max | tl(lists:reverse(lists:seq(Min,Max,Interval)))] ), {Acc0,_} = lists:mapfoldl(fun(Upper,Lower) -> {{{Lower,Upper},0}, Upper+1} end, hd(IntervalUpperLimits), tl(IntervalUpperLimits)), - Fs0 = get_frequencies(L, Acc0), + Fs0 = get_frequencies(L, Acc0), SumVal = lists:sum([V||{_,V}<-Fs0]), Fs = with_percentage(Fs0, SumVal), Mean = mean(L), @@ -517,7 +579,6 @@ print_frequencies(L, N, Min, Max) -> || {Interval={Rlow,Rhigh},Val,Percent} <- Fs], io:format('~*c ~*c~n',[2*Npos_range,32,Npos_value+2,$-]), io:format('~*c ~*w~n',[2*Npos_range,32,Npos_value,SumVal]) - %%,io:format('L=~p~n',[L]) catch C:E -> io:format('*** Faild printing (~p:~p) for~n~p~n',[C,E,L]) @@ -527,6 +588,8 @@ get_frequencies([{I,Num}|T], [{{Lower,Upper},Cnt}|Acc]) when Lower=<I,I=<Upper - get_frequencies(T, [{{Lower,Upper},Cnt+Num}|Acc]); get_frequencies(L=[{I,_Num}|_], [Ah={{_Lower,Upper},_Cnt}|Acc]) when I>Upper -> [Ah | get_frequencies(L,Acc)]; +get_frequencies([I|T], Acc) when is_integer(I) -> + get_frequencies([{I,1}|T], Acc); get_frequencies([], Acc) -> Acc. @@ -616,4 +679,3 @@ erase_dir(Dir) -> file:del_dir(Dir). -endif. --endif. diff --git a/lib/ssh/test/property_test/ssh_eqc_subsys.erl b/lib/ssh/test/property_test/ssh_eqc_subsys.erl index 30b254b9c0..087b3ebfa7 100644 --- a/lib/ssh/test/property_test/ssh_eqc_subsys.erl +++ b/lib/ssh/test/property_test/ssh_eqc_subsys.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2016. All Rights Reserved. +%% Copyright Ericsson AB 2004-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -21,7 +21,7 @@ -module(ssh_eqc_subsys). --behaviour(ssh_daemon_channel). +-behaviour(ssh_server_channel). -export([init/1, handle_msg/2, handle_ssh_msg/2, terminate/2]). diff --git a/lib/ssh/test/ssh_algorithms_SUITE.erl b/lib/ssh/test/ssh_algorithms_SUITE.erl index de6e448ebd..02e5f40c38 100644 --- a/lib/ssh/test/ssh_algorithms_SUITE.erl +++ b/lib/ssh/test/ssh_algorithms_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -35,7 +35,7 @@ suite() -> [{ct_hooks,[ts_install_cth]}, - {timetrap,{seconds,round(1.5*?TIMEOUT/1000)}}]. + {timetrap,{seconds,60}}]. all() -> %% [{group,kex},{group,cipher}... etc @@ -100,7 +100,7 @@ init_per_suite(Config) -> ct:log("all() ->~n ~p.~n~ngroups()->~n ~p.~n",[all(),groups()]), ssh:start(), [{std_simple_sftp_size,25000} % Sftp transferred data size - | setup_pubkey(Config)] + | Config] end ). @@ -184,12 +184,15 @@ init_per_testcase(TC, {public_key,Alg}, Config) -> | ExtraOpts], [{extra_daemon,true}|Config]); {{ok,_}, {error,Err}} -> + ct:log("Alg = ~p~nOpts = ~p",[Alg,Opts]), {skip, io_lib:format("No host key: ~p",[Err])}; {{error,Err}, {ok,_}} -> + ct:log("Alg = ~p~nOpts = ~p",[Alg,Opts]), {skip, io_lib:format("No user key: ~p",[Err])}; _ -> + ct:log("Alg = ~p~nOpts = ~p",[Alg,Opts]), {skip, "Neither host nor user key"} end; @@ -257,15 +260,14 @@ try_exec_simple_group(Group, Config) -> of _ -> ct:fail("Exec though no group available") catch - error:{badmatch,{error,"No possible diffie-hellman-group-exchange group found"}} -> ok; - error:{badmatch,{error,"Connection closed"}} -> ok + error:{badmatch,{error,"Key exchange failed"}} -> ok end. %%-------------------------------------------------------------------- %% Testing all default groups simple_exec_groups() -> - [{timetrap,{seconds,120}}]. + [{timetrap,{seconds,180}}]. simple_exec_groups(Config) -> Sizes = interpolate( public_key:dh_gex_group_sizes() ), @@ -460,17 +462,6 @@ pubkey_opts(Config) -> {system_dir, SystemDir}]. -setup_pubkey(Config) -> - DataDir = proplists:get_value(data_dir, Config), - UserDir = proplists:get_value(priv_dir, Config), - Keys = - [ssh_test_lib:setup_dsa(DataDir, UserDir), - ssh_test_lib:setup_rsa(DataDir, UserDir), - ssh_test_lib:setup_ecdsa("256", DataDir, UserDir) - ], - ssh_test_lib:write_auth_keys(Keys, UserDir), % 'authorized_keys' shall contain ALL pub keys - Config. - setup_pubkey(Alg, Config) -> DataDir = proplists:get_value(data_dir, Config), UserDir = proplists:get_value(priv_dir, Config), @@ -482,7 +473,9 @@ setup_pubkey(Alg, Config) -> 'rsa-sha2-512' -> ssh_test_lib:setup_rsa(DataDir, UserDir); 'ecdsa-sha2-nistp256' -> ssh_test_lib:setup_ecdsa("256", DataDir, UserDir); 'ecdsa-sha2-nistp384' -> ssh_test_lib:setup_ecdsa("384", DataDir, UserDir); - 'ecdsa-sha2-nistp521' -> ssh_test_lib:setup_ecdsa("521", DataDir, UserDir) + 'ecdsa-sha2-nistp521' -> ssh_test_lib:setup_ecdsa("521", DataDir, UserDir); + 'ssh-ed25519' -> ssh_test_lib:setup_eddsa(ed25519, DataDir, UserDir); + 'ssh-ed448' -> ssh_test_lib:setup_eddsa(ed448, DataDir, UserDir) end, Config. diff --git a/lib/ssh/test/ssh_algorithms_SUITE_data/id_ed25519 b/lib/ssh/test/ssh_algorithms_SUITE_data/id_ed25519 new file mode 100644 index 0000000000..401a3e4a9a --- /dev/null +++ b/lib/ssh/test/ssh_algorithms_SUITE_data/id_ed25519 @@ -0,0 +1,7 @@ +-----BEGIN OPENSSH PRIVATE KEY----- +b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW +QyNTUxOQAAACDm9P8/gC0IOKmwHLSvkmEtS2Xx0RRqUDqC6wY6UgDVnwAAAJg3+6xpN/us +aQAAAAtzc2gtZWQyNTUxOQAAACDm9P8/gC0IOKmwHLSvkmEtS2Xx0RRqUDqC6wY6UgDVnw +AAAEBzC/Z2WGJhZ3l3tIBnUc6DCbp+lXY2yc2RRpWQTdf8sub0/z+ALQg4qbActK+SYS1L +ZfHRFGpQOoLrBjpSANWfAAAAE3VhYmhuaWxAZWx4YWRsajNxMzIBAg== +-----END OPENSSH PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_algorithms_SUITE_data/id_ed25519.pub b/lib/ssh/test/ssh_algorithms_SUITE_data/id_ed25519.pub new file mode 100644 index 0000000000..a5c03b19c1 --- /dev/null +++ b/lib/ssh/test/ssh_algorithms_SUITE_data/id_ed25519.pub @@ -0,0 +1 @@ +ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOb0/z+ALQg4qbActK+SYS1LZfHRFGpQOoLrBjpSANWf uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_algorithms_SUITE_data/id_ed448 b/lib/ssh/test/ssh_algorithms_SUITE_data/id_ed448 new file mode 100644 index 0000000000..8ecfd710dc --- /dev/null +++ b/lib/ssh/test/ssh_algorithms_SUITE_data/id_ed448 @@ -0,0 +1,10 @@ +-----BEGIN OPENSSH PRIVATE KEY----- +b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAASgAAAAlz +c2gtZWQ0NDgAAAA53OqeePNaG/NJmoMbELhskKrAHNhLZ6AQm1WjbpMoseNl/OFh +1xznExpUPqTLX36fHYsAaWRHABQAAAAA0AAAEREAABERAAAACXNzaC1lZDQ0OAAA +ADnc6p5481ob80magxsQuGyQqsAc2EtnoBCbVaNukyix42X84WHXHOcTGlQ+pMtf +fp8diwBpZEcAFAAAAAByzSPST3FCdOdENDI3uTKQ9RH2Ql+Y5kRZ/yA+iYUIP/32 +BQBVOrwOBc0CGEvbicTM1n4YeVEmfrMo3OqeePNaG/NJmoMbELhskKrAHNhLZ6AQ +m1WjbpMoseNl/OFh1xznExpUPqTLX36fHYsAaWRHABQAAAAAAAECAwQ= +-----END OPENSSH PRIVATE KEY----- + diff --git a/lib/ssh/test/ssh_algorithms_SUITE_data/id_ed448.pub b/lib/ssh/test/ssh_algorithms_SUITE_data/id_ed448.pub new file mode 100644 index 0000000000..cec0765a5d --- /dev/null +++ b/lib/ssh/test/ssh_algorithms_SUITE_data/id_ed448.pub @@ -0,0 +1 @@ +ssh-ed448 AAAACXNzaC1lZDQ0OAAAADnc6p5481ob80magxsQuGyQqsAc2EtnoBCbVaNukyix42X84WHXHOcTGlQ+pMtffp8diwBpZEcAFAA= uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_algorithms_SUITE_data/ssh_host_ed25519_key b/lib/ssh/test/ssh_algorithms_SUITE_data/ssh_host_ed25519_key new file mode 100644 index 0000000000..13a8fcf491 --- /dev/null +++ b/lib/ssh/test/ssh_algorithms_SUITE_data/ssh_host_ed25519_key @@ -0,0 +1,7 @@ +-----BEGIN OPENSSH PRIVATE KEY----- +b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW +QyNTUxOQAAACBJSOuiYGWaO9lye8Bgafod1kw8P6cV3Xb2qJgCB6yJfQAAAJi+h4O7voeD +uwAAAAtzc2gtZWQyNTUxOQAAACBJSOuiYGWaO9lye8Bgafod1kw8P6cV3Xb2qJgCB6yJfQ +AAAEBaOcJfGPNemKc1wPHTCmM4Kwvh6dZ0CqY14UT361UnN0lI66JgZZo72XJ7wGBp+h3W +TDw/pxXddvaomAIHrIl9AAAAE3VhYmhuaWxAZWx4YWRsajNxMzIBAg== +-----END OPENSSH PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_algorithms_SUITE_data/ssh_host_ed25519_key.pub b/lib/ssh/test/ssh_algorithms_SUITE_data/ssh_host_ed25519_key.pub new file mode 100644 index 0000000000..156ef4045c --- /dev/null +++ b/lib/ssh/test/ssh_algorithms_SUITE_data/ssh_host_ed25519_key.pub @@ -0,0 +1 @@ +ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIElI66JgZZo72XJ7wGBp+h3WTDw/pxXddvaomAIHrIl9 uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_algorithms_SUITE_data/ssh_host_ed448_key b/lib/ssh/test/ssh_algorithms_SUITE_data/ssh_host_ed448_key new file mode 100644 index 0000000000..31a7e4e8c3 --- /dev/null +++ b/lib/ssh/test/ssh_algorithms_SUITE_data/ssh_host_ed448_key @@ -0,0 +1,10 @@ +-----BEGIN OPENSSH PRIVATE KEY----- +b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAASgAAAAlz +c2gtZWQ0NDgAAAA5X9dEm1m0Yf0s54fsYWrUah2hNCSFpw4fig6nXYDpZ3jt8SR2 +m0bHBhvWeD3x5Q9s0foavq/oJWGAAAAA0AAAEREAABERAAAACXNzaC1lZDQ0OAAA +ADlf10SbWbRh/Sznh+xhatRqHaE0JIWnDh+KDqddgOlneO3xJHabRscGG9Z4PfHl +D2zR+hq+r+glYYAAAABybIKlYsuAjRDWMr6JyFE+v2ySnzTd+oyfY8mWDvbjSKNS +jIo/zC8ETjmj/FuUSS+PAy51SaIAmPlbX9dEm1m0Yf0s54fsYWrUah2hNCSFpw4f +ig6nXYDpZ3jt8SR2m0bHBhvWeD3x5Q9s0foavq/oJWGAAAAAAAECAwQ= +-----END OPENSSH PRIVATE KEY----- + diff --git a/lib/ssh/test/ssh_algorithms_SUITE_data/ssh_host_ed448_key.pub b/lib/ssh/test/ssh_algorithms_SUITE_data/ssh_host_ed448_key.pub new file mode 100644 index 0000000000..8c390dcb58 --- /dev/null +++ b/lib/ssh/test/ssh_algorithms_SUITE_data/ssh_host_ed448_key.pub @@ -0,0 +1 @@ +ssh-ed448 AAAACXNzaC1lZDQ0OAAAADlf10SbWbRh/Sznh+xhatRqHaE0JIWnDh+KDqddgOlneO3xJHabRscGG9Z4PfHlD2zR+hq+r+glYYA= diff --git a/lib/ssh/test/ssh_basic_SUITE.erl b/lib/ssh/test/ssh_basic_SUITE.erl index 365f25fabb..5de6d52092 100644 --- a/lib/ssh/test/ssh_basic_SUITE.erl +++ b/lib/ssh/test/ssh_basic_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -28,60 +28,12 @@ -include("ssh_test_lib.hrl"). %% Note: This directive should only be used in test suites. -%%-compile(export_all). - -%%% Test cases --export([ - app_test/1, - appup_test/1, - cli/1, - close/1, - daemon_already_started/1, - daemon_opt_fd/1, - multi_daemon_opt_fd/1, - double_close/1, - exec/1, - exec_compressed/1, - exec_key_differs1/1, - exec_key_differs2/1, - exec_key_differs3/1, - exec_key_differs_fail/1, - fail_daemon_start/1, - idle_time_client/1, - idle_time_server/1, - inet6_option/1, - inet_option/1, - internal_error/1, - known_hosts/1, - login_bad_pwd_no_retry1/1, - login_bad_pwd_no_retry2/1, - login_bad_pwd_no_retry3/1, - login_bad_pwd_no_retry4/1, - login_bad_pwd_no_retry5/1, - misc_ssh_options/1, - openssh_zlib_basic_test/1, - packet_size/1, - pass_phrase/1, - peername_sockname/1, - send/1, - shell/1, - shell_no_unicode/1, - shell_unicode_string/1, - ssh_info_print/1, - key_callback/1, - key_callback_options/1, - shell_exit_status/1 - ]). - -%%% Common test callbacks --export([suite/0, all/0, groups/0, - init_per_suite/1, end_per_suite/1, - init_per_group/2, end_per_group/2, - init_per_testcase/2, end_per_testcase/2 - ]). +-compile(export_all). -define(NEWLINE, <<"\r\n">>). +-define(REKEY_DATA_TMO, 1 * 60000). % Should be multiples of 60000 + %%-------------------------------------------------------------------- %% Common Test interface functions ----------------------------------- %%-------------------------------------------------------------------- @@ -91,76 +43,111 @@ suite() -> {timetrap,{seconds,40}}]. all() -> - [app_test, - appup_test, - {group, dsa_key}, - {group, rsa_key}, - {group, ecdsa_sha2_nistp256_key}, - {group, ecdsa_sha2_nistp384_key}, - {group, ecdsa_sha2_nistp521_key}, - {group, dsa_pass_key}, - {group, rsa_pass_key}, - {group, ecdsa_sha2_nistp256_pass_key}, - {group, ecdsa_sha2_nistp384_pass_key}, - {group, ecdsa_sha2_nistp521_pass_key}, - {group, host_user_key_differs}, - {group, key_cb}, - {group, internal_error}, - {group, rsa_host_key_is_actualy_ecdsa}, - daemon_already_started, - double_close, - daemon_opt_fd, - multi_daemon_opt_fd, - packet_size, - ssh_info_print, - {group, login_bad_pwd_no_retry}, - shell_exit_status + [{group, all_tests}, + daemon_already_started ]. groups() -> - [{dsa_key, [], basic_tests()}, - {rsa_key, [], basic_tests()}, - {ecdsa_sha2_nistp256_key, [], basic_tests()}, - {ecdsa_sha2_nistp384_key, [], basic_tests()}, - {ecdsa_sha2_nistp521_key, [], basic_tests()}, + [{all_tests, [parallel], [{group, ssh_renegotiate_SUITE}, + {group, ssh_basic_SUITE} + ]}, + {ssh_basic_SUITE, [], [app_test, + appup_test, + {group, dsa_key}, + {group, rsa_key}, + {group, ecdsa_sha2_nistp256_key}, + {group, ecdsa_sha2_nistp384_key}, + {group, ecdsa_sha2_nistp521_key}, + {group, ed25519_key}, + {group, ed448_key}, + {group, dsa_pass_key}, + {group, rsa_pass_key}, + {group, ecdsa_sha2_nistp256_pass_key}, + {group, ecdsa_sha2_nistp384_pass_key}, + {group, ecdsa_sha2_nistp521_pass_key}, + {group, host_user_key_differs}, + {group, key_cb}, + {group, internal_error}, + {group, rsa_host_key_is_actualy_ecdsa}, + daemon_already_started, + double_close, + daemon_opt_fd, + multi_daemon_opt_fd, + packet_size, + ssh_info_print, + {group, login_bad_pwd_no_retry}, + shell_exit_status + ]}, + + {ssh_renegotiate_SUITE, [parallel], [rekey0, + rekey1, + rekey2, + rekey3, + rekey4, + rekey_limit_client, + rekey_limit_daemon, + rekey_time_limit_client, + rekey_time_limit_daemon, + norekey_limit_client, + norekey_limit_daemon, + renegotiate1, + renegotiate2]}, + + {dsa_key, [], [{group, basic}]}, + {rsa_key, [], [{group, basic}]}, + {ecdsa_sha2_nistp256_key, [], [{group, basic}]}, + {ecdsa_sha2_nistp384_key, [], [{group, basic}]}, + {ecdsa_sha2_nistp521_key, [], [{group, basic}]}, + {ed25519_key, [], [{group, basic}]}, + {ed448_key, [], [{group, basic}]}, {rsa_host_key_is_actualy_ecdsa, [], [fail_daemon_start]}, - {host_user_key_differs, [], [exec_key_differs1, - exec_key_differs2, - exec_key_differs3, - exec_key_differs_fail]}, + {host_user_key_differs, [parallel], [exec_key_differs1, + exec_key_differs2, + exec_key_differs3, + exec_key_differs_fail]}, {dsa_pass_key, [], [pass_phrase]}, {rsa_pass_key, [], [pass_phrase]}, {ecdsa_sha2_nistp256_pass_key, [], [pass_phrase]}, {ecdsa_sha2_nistp384_pass_key, [], [pass_phrase]}, {ecdsa_sha2_nistp521_pass_key, [], [pass_phrase]}, - {key_cb, [], [key_callback, key_callback_options]}, + {key_cb, [parallel], [key_callback, key_callback_options]}, {internal_error, [], [internal_error]}, - {login_bad_pwd_no_retry, [], [login_bad_pwd_no_retry1, - login_bad_pwd_no_retry2, - login_bad_pwd_no_retry3, - login_bad_pwd_no_retry4, - login_bad_pwd_no_retry5 - ]} + {login_bad_pwd_no_retry, [parallel], [login_bad_pwd_no_retry1, + login_bad_pwd_no_retry2, + login_bad_pwd_no_retry3, + login_bad_pwd_no_retry4, + login_bad_pwd_no_retry5 + ]}, + + {basic, [], [{group,p_basic}, + shell, shell_no_unicode, shell_unicode_string, + close, + known_hosts + ]}, + {p_basic, [parallel], [send, peername_sockname, + exec, exec_compressed, + cli, + idle_time_client, idle_time_server, openssh_zlib_basic_test, + misc_ssh_options, inet_option, inet6_option]} ]. -basic_tests() -> - [send, close, peername_sockname, - exec, exec_compressed, - shell, shell_no_unicode, shell_unicode_string, - cli, known_hosts, - idle_time_client, idle_time_server, openssh_zlib_basic_test, - misc_ssh_options, inet_option, inet6_option]. + %%-------------------------------------------------------------------- init_per_suite(Config) -> - ?CHECK_CRYPTO(Config). + ?CHECK_CRYPTO(begin + ssh:start(), + Config + end). end_per_suite(_Config) -> ssh:stop(). %%-------------------------------------------------------------------- +init_per_group(ssh_renegotiate_SUITE, Config) -> + [{preferred_algorithms, ssh:default_algorithms()} | Config]; init_per_group(dsa_key, Config) -> case lists:member('ssh-dss', ssh_transport:default_algorithms(public_key)) of @@ -241,6 +228,28 @@ init_per_group(ecdsa_sha2_nistp521_key, Config) -> false -> {skip, unsupported_pub_key} end; +init_per_group(ed25519_key, Config) -> + case lists:member('ssh-ed25519', + ssh_transport:default_algorithms(public_key)) of + true -> + DataDir = proplists:get_value(data_dir, Config), + PrivDir = proplists:get_value(priv_dir, Config), + ssh_test_lib:setup_eddsa(ed25519, DataDir, PrivDir), + Config; + false -> + {skip, unsupported_pub_key} + end; +init_per_group(ed448_key, Config) -> + case lists:member('ssh-ed448', + ssh_transport:default_algorithms(public_key)) of + true -> + DataDir = proplists:get_value(data_dir, Config), + PrivDir = proplists:get_value(priv_dir, Config), + ssh_test_lib:setup_eddsa(ed448, DataDir, PrivDir), + Config; + false -> + {skip, unsupported_pub_key} + end; init_per_group(rsa_pass_key, Config) -> case lists:member('ssh-rsa', ssh_transport:default_algorithms(public_key)) of @@ -414,7 +423,6 @@ init_per_testcase(TC, Config) when TC==shell_no_unicode ; PrivDir = proplists:get_value(priv_dir, Config), UserDir = proplists:get_value(priv_dir, Config), SysDir = proplists:get_value(data_dir, Config), - ssh:start(), Sftpd = {_Pid, _Host, Port} = ssh_test_lib:daemon([{system_dir, SysDir}, {user_dir, PrivDir}, @@ -437,7 +445,6 @@ init_per_testcase(inet6_option, Config) -> {skip,"No ipv6 interface address"} end; init_per_testcase(_TestCase, Config) -> - ssh:start(), Config. end_per_testcase(TestCase, Config) when TestCase == server_password_option; @@ -458,7 +465,6 @@ end_per_testcase(_TestCase, Config) -> end_per_testcase(Config). end_per_testcase(_Config) -> - ssh:stop(), ok. %%-------------------------------------------------------------------- @@ -480,8 +486,8 @@ misc_ssh_options(Config) when is_list(Config) -> SystemDir = filename:join(proplists:get_value(priv_dir, Config), system), UserDir = proplists:get_value(priv_dir, Config), - CMiscOpt0 = [{connect_timeout, 1000}, {user_dir, UserDir}], - CMiscOpt1 = [{connect_timeout, infinity}, {user_dir, UserDir}], + CMiscOpt0 = [{connect_timeout, 1000}, {user_dir, UserDir}, {silently_accept_hosts, true}], + CMiscOpt1 = [{connect_timeout, infinity}, {user_dir, UserDir}, {silently_accept_hosts, true}], SMiscOpt0 = [{user_dir, UserDir}, {system_dir, SystemDir}], SMiscOpt1 = [{user_dir, UserDir}, {system_dir, SystemDir}], @@ -797,6 +803,24 @@ daemon_already_started(Config) when is_list(Config) -> ssh:stop_daemon(Pid). %%-------------------------------------------------------------------- +%%% Test that a failed daemon start does not leave the port open +daemon_error_closes_port(Config) -> + GoodSystemDir = proplists:get_value(data_dir, Config), + Port = ssh_test_lib:inet_port(), + {error,_} = ssh_test_lib:daemon(Port, []), % No system dir + case ssh_test_lib:daemon(Port, [{system_dir, GoodSystemDir}]) of + {error,eaddrinuse} -> + {fail, "Port leakage"}; + {error,Error} -> + ct:log("Strange error: ~p",[Error]), + {fail, "Strange error"}; + {Pid, _Host, Port} -> + %% Ok + ssh:stop_daemon(Pid) + end. + + +%%-------------------------------------------------------------------- %%% check that known_hosts is updated correctly known_hosts(Config) when is_list(Config) -> SystemDir = proplists:get_value(data_dir, Config), @@ -1124,11 +1148,14 @@ packet_size(Config) -> ct:log("Try max_packet_size=~p",[MaxPacketSize]), {ok,Ch} = ssh_connection:session_channel(Conn, 1000, MaxPacketSize, 60000), ok = ssh_connection:shell(Conn, Ch), - rec(Server, Conn, Ch, MaxPacketSize) + rec(Server, Conn, Ch, MaxPacketSize), + ssh_connection:close(Conn, Ch) end, [0, 1, 10, 25]), ssh:close(Conn), - ssh:stop_daemon(Server). + ssh:stop_daemon(Server), + ok. + rec(Server, Conn, Ch, MaxSz) -> receive @@ -1141,7 +1168,9 @@ rec(Server, Conn, Ch, MaxSz) -> ssh:stop_daemon(Server), ct:fail("Does not obey max_packet_size=~p",[MaxSz]) after - 2000 -> ok + 2000 -> + ct:log("~p: ok!",[MaxSz]), + ok end. %%-------------------------------------------------------------------- @@ -1350,6 +1379,318 @@ shell_exit_status(Config) when is_list(Config) -> ssh:stop_daemon(Pid). +%%---------------------------------------------------------------------------- +%%% Idle timeout test +rekey0() -> [{timetrap,{seconds,90}}]. +rekey1() -> [{timetrap,{seconds,90}}]. +rekey2() -> [{timetrap,{seconds,90}}]. +rekey3() -> [{timetrap,{seconds,90}}]. +rekey4() -> [{timetrap,{seconds,90}}]. + +rekey0(Config) -> rekey_chk(Config, 0, 0). +rekey1(Config) -> rekey_chk(Config, infinity, 0). +rekey2(Config) -> rekey_chk(Config, {infinity,infinity}, 0). +rekey3(Config) -> rekey_chk(Config, 0, infinity). +rekey4(Config) -> rekey_chk(Config, 0, {infinity,infinity}). + +rekey_chk(Config, RLdaemon, RLclient) -> + {Pid, Host, Port} = ssh_test_lib:std_daemon(Config, [{rekey_limit, RLdaemon}]), + ConnectionRef = ssh_test_lib:std_connect(Config, Host, Port, [{rekey_limit, RLclient}]), + Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), + + %% Make both sides send something: + {ok, SftpPid} = ssh_sftp:start_channel(ConnectionRef), + + %% Check rekeying + timer:sleep(?REKEY_DATA_TMO), + ?wait_match(false, Kex1==ssh_test_lib:get_kex_init(ConnectionRef), [], 2000, 10), + + ssh:close(ConnectionRef), + ssh:stop_daemon(Pid). + +%%-------------------------------------------------------------------- +%%% Test rekeying by data volume + +rekey_limit_client() -> [{timetrap,{seconds,400}}]. +rekey_limit_client(Config) -> + Limit = 6000, + UserDir = proplists:get_value(priv_dir, Config), + DataFile = filename:join(UserDir, "rekey.data"), + Data = lists:duplicate(Limit+10,1), + Algs = proplists:get_value(preferred_algorithms, Config), + {Pid, Host, Port} = ssh_test_lib:std_daemon(Config,[{max_random_length_padding,0}, + {preferred_algorithms,Algs}]), + + ConnectionRef = ssh_test_lib:std_connect(Config, Host, Port, [{rekey_limit, Limit}, + {max_random_length_padding,0}]), + {ok, SftpPid} = ssh_sftp:start_channel(ConnectionRef), + + %% Check that it doesn't rekey without data transfer + Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), + timer:sleep(?REKEY_DATA_TMO), + true = (Kex1 == ssh_test_lib:get_kex_init(ConnectionRef)), + + %% Check that datatransfer triggers rekeying + ok = ssh_sftp:write_file(SftpPid, DataFile, Data), + timer:sleep(?REKEY_DATA_TMO), + ?wait_match(false, Kex1==(Kex2=ssh_test_lib:get_kex_init(ConnectionRef)), Kex2, 2000, 10), + + %% Check that datatransfer continues to trigger rekeying + ok = ssh_sftp:write_file(SftpPid, DataFile, Data), + timer:sleep(?REKEY_DATA_TMO), + ?wait_match(false, Kex2==(Kex3=ssh_test_lib:get_kex_init(ConnectionRef)), Kex3, 2000, 10), + + %% Check that it doesn't rekey without data transfer + timer:sleep(?REKEY_DATA_TMO), + true = (Kex3 == ssh_test_lib:get_kex_init(ConnectionRef)), + + %% Check that it doesn't rekey on a small datatransfer + ok = ssh_sftp:write_file(SftpPid, DataFile, "hi\n"), + timer:sleep(?REKEY_DATA_TMO), + true = (Kex3 == ssh_test_lib:get_kex_init(ConnectionRef)), + + %% Check that it doesn't rekey without data transfer + timer:sleep(?REKEY_DATA_TMO), + true = (Kex3 == ssh_test_lib:get_kex_init(ConnectionRef)), + + ssh_sftp:stop_channel(SftpPid), + ssh:close(ConnectionRef), + ssh:stop_daemon(Pid). + + + +rekey_limit_daemon() -> [{timetrap,{seconds,400}}]. +rekey_limit_daemon(Config) -> + Limit = 6000, + UserDir = proplists:get_value(priv_dir, Config), + DataFile1 = filename:join(UserDir, "rekey1.data"), + DataFile2 = filename:join(UserDir, "rekey2.data"), + file:write_file(DataFile1, lists:duplicate(Limit+10,1)), + file:write_file(DataFile2, "hi\n"), + + Algs = proplists:get_value(preferred_algorithms, Config), + {Pid, Host, Port} = ssh_test_lib:std_daemon(Config,[{rekey_limit, Limit}, + {max_random_length_padding,0}, + {preferred_algorithms,Algs}]), + ConnectionRef = ssh_test_lib:std_connect(Config, Host, Port, [{max_random_length_padding,0}]), + {ok, SftpPid} = ssh_sftp:start_channel(ConnectionRef), + + %% Check that it doesn't rekey without data transfer + Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), + timer:sleep(?REKEY_DATA_TMO), + Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), + + %% Check that datatransfer triggers rekeying + {ok,_} = ssh_sftp:read_file(SftpPid, DataFile1), + timer:sleep(?REKEY_DATA_TMO), + ?wait_match(false, Kex1==(Kex2=ssh_test_lib:get_kex_init(ConnectionRef)), Kex2, 2000, 10), + + %% Check that datatransfer continues to trigger rekeying + {ok,_} = ssh_sftp:read_file(SftpPid, DataFile1), + timer:sleep(?REKEY_DATA_TMO), + ?wait_match(false, Kex2==(Kex3=ssh_test_lib:get_kex_init(ConnectionRef)), Kex3, 2000, 10), + + %% Check that it doesn't rekey without data transfer + timer:sleep(?REKEY_DATA_TMO), + true = (Kex3 == ssh_test_lib:get_kex_init(ConnectionRef)), + + %% Check that it doesn't rekey on a small datatransfer + {ok,_} = ssh_sftp:read_file(SftpPid, DataFile2), + timer:sleep(?REKEY_DATA_TMO), + true = (Kex3 == ssh_test_lib:get_kex_init(ConnectionRef)), + + %% Check that it doesn't rekey without data transfer + timer:sleep(?REKEY_DATA_TMO), + true = (Kex3 == ssh_test_lib:get_kex_init(ConnectionRef)), + + ssh_sftp:stop_channel(SftpPid), + ssh:close(ConnectionRef), + ssh:stop_daemon(Pid). + + +%%-------------------------------------------------------------------- +%% Check that datatransfer in the other direction does not trigger re-keying +norekey_limit_client() -> [{timetrap,{seconds,400}}]. +norekey_limit_client(Config) -> + Limit = 6000, + UserDir = proplists:get_value(priv_dir, Config), + DataFile = filename:join(UserDir, "rekey3.data"), + file:write_file(DataFile, lists:duplicate(Limit+10,1)), + + Algs = proplists:get_value(preferred_algorithms, Config), + {Pid, Host, Port} = ssh_test_lib:std_daemon(Config,[{max_random_length_padding,0}, + {preferred_algorithms,Algs}]), + + ConnectionRef = ssh_test_lib:std_connect(Config, Host, Port, [{rekey_limit, Limit}, + {max_random_length_padding,0}]), + {ok, SftpPid} = ssh_sftp:start_channel(ConnectionRef), + + Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), + timer:sleep(?REKEY_DATA_TMO), + true = (Kex1 == ssh_test_lib:get_kex_init(ConnectionRef)), + + {ok,_} = ssh_sftp:read_file(SftpPid, DataFile), + timer:sleep(?REKEY_DATA_TMO), + true = (Kex1 == ssh_test_lib:get_kex_init(ConnectionRef)), + + ssh_sftp:stop_channel(SftpPid), + ssh:close(ConnectionRef), + ssh:stop_daemon(Pid). + +%% Check that datatransfer in the other direction does not trigger re-keying +norekey_limit_daemon() -> [{timetrap,{seconds,400}}]. +norekey_limit_daemon(Config) -> + Limit = 6000, + UserDir = proplists:get_value(priv_dir, Config), + DataFile = filename:join(UserDir, "rekey4.data"), + + Algs = proplists:get_value(preferred_algorithms, Config), + {Pid, Host, Port} = ssh_test_lib:std_daemon(Config,[{rekey_limit, Limit}, + {max_random_length_padding,0}, + {preferred_algorithms,Algs}]), + + ConnectionRef = ssh_test_lib:std_connect(Config, Host, Port, [{max_random_length_padding,0}]), + {ok, SftpPid} = ssh_sftp:start_channel(ConnectionRef), + + Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), + timer:sleep(?REKEY_DATA_TMO), + true = (Kex1 == ssh_test_lib:get_kex_init(ConnectionRef)), + + ok = ssh_sftp:write_file(SftpPid, DataFile, lists:duplicate(Limit+10,1)), + timer:sleep(?REKEY_DATA_TMO), + true = (Kex1 == ssh_test_lib:get_kex_init(ConnectionRef)), + + ssh_sftp:stop_channel(SftpPid), + ssh:close(ConnectionRef), + ssh:stop_daemon(Pid). + +%%-------------------------------------------------------------------- +%%% Test rekeying by time + +rekey_time_limit_client() -> [{timetrap,{seconds,400}}]. +rekey_time_limit_client(Config) -> + Minutes = ?REKEY_DATA_TMO div 60000, + GB = 1024*1000*1000, + Algs = proplists:get_value(preferred_algorithms, Config), + {Pid, Host, Port} = ssh_test_lib:std_daemon(Config,[{max_random_length_padding,0}, + {preferred_algorithms,Algs}]), + ConnectionRef = ssh_test_lib:std_connect(Config, Host, Port, [{rekey_limit, {Minutes, GB}}, + {max_random_length_padding,0}]), + rekey_time_limit(Pid, ConnectionRef). + +rekey_time_limit_daemon() -> [{timetrap,{seconds,400}}]. +rekey_time_limit_daemon(Config) -> + Minutes = ?REKEY_DATA_TMO div 60000, + GB = 1024*1000*1000, + Algs = proplists:get_value(preferred_algorithms, Config), + {Pid, Host, Port} = ssh_test_lib:std_daemon(Config,[{rekey_limit, {Minutes, GB}}, + {max_random_length_padding,0}, + {preferred_algorithms,Algs}]), + ConnectionRef = ssh_test_lib:std_connect(Config, Host, Port, [{max_random_length_padding,0}]), + rekey_time_limit(Pid, ConnectionRef). + + +rekey_time_limit(Pid, ConnectionRef) -> + {ok, SftpPid} = ssh_sftp:start_channel(ConnectionRef), + Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), + + timer:sleep(5000), + true = (Kex1 == ssh_test_lib:get_kex_init(ConnectionRef)), + + %% Check that it rekeys when the max time + 30s has passed + timer:sleep(?REKEY_DATA_TMO + 30*1000), + ?wait_match(false, Kex1==(Kex2=ssh_test_lib:get_kex_init(ConnectionRef)), Kex2, 2000, 10), + + %% Check that it does not rekey when nothing is transferred + timer:sleep(?REKEY_DATA_TMO + 30*1000), + ?wait_match(false, Kex2==ssh_test_lib:get_kex_init(ConnectionRef), [], 2000, 10), + + ssh_sftp:stop_channel(SftpPid), + ssh:close(ConnectionRef), + ssh:stop_daemon(Pid). + +%%-------------------------------------------------------------------- + +%%% Test rekeying with simultaneous send request + +renegotiate1(Config) -> + UserDir = proplists:get_value(priv_dir, Config), + DataFile = filename:join(UserDir, "renegotiate1.data"), + + Algs = proplists:get_value(preferred_algorithms, Config), + {Pid, Host, DPort} = ssh_test_lib:std_daemon(Config,[{max_random_length_padding,0}, + {preferred_algorithms,Algs}]), + + RPort = ssh_test_lib:inet_port(), + {ok,RelayPid} = ssh_relay:start_link({0,0,0,0}, RPort, Host, DPort), + + + ConnectionRef = ssh_test_lib:std_connect(Config, Host, RPort, [{max_random_length_padding,0}]), + {ok, SftpPid} = ssh_sftp:start_channel(ConnectionRef), + + Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), + + {ok, Handle} = ssh_sftp:open(SftpPid, DataFile, [write]), + + ok = ssh_sftp:write(SftpPid, Handle, "hi\n"), + + ssh_relay:hold(RelayPid, rx, 20, 1000), + ssh_connection_handler:renegotiate(ConnectionRef), + spawn(fun() -> ok=ssh_sftp:write(SftpPid, Handle, "another hi\n") end), + + timer:sleep(2000), + + Kex2 = ssh_test_lib:get_kex_init(ConnectionRef), + + false = (Kex2 == Kex1), + + ssh_relay:stop(RelayPid), + ssh_sftp:stop_channel(SftpPid), + ssh:close(ConnectionRef), + ssh:stop_daemon(Pid). + +%%-------------------------------------------------------------------- + +%%% Test rekeying with inflight messages from peer + +renegotiate2(Config) -> + UserDir = proplists:get_value(priv_dir, Config), + DataFile = filename:join(UserDir, "renegotiate2.data"), + + Algs = proplists:get_value(preferred_algorithms, Config), + {Pid, Host, DPort} = ssh_test_lib:std_daemon(Config,[{max_random_length_padding,0}, + {preferred_algorithms,Algs}]), + + RPort = ssh_test_lib:inet_port(), + {ok,RelayPid} = ssh_relay:start_link({0,0,0,0}, RPort, Host, DPort), + + ConnectionRef = ssh_test_lib:std_connect(Config, Host, RPort, [{max_random_length_padding,0}]), + {ok, SftpPid} = ssh_sftp:start_channel(ConnectionRef), + + Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), + + {ok, Handle} = ssh_sftp:open(SftpPid, DataFile, [write]), + + ok = ssh_sftp:write(SftpPid, Handle, "hi\n"), + + ssh_relay:hold(RelayPid, rx, 20, infinity), + spawn(fun() -> ok=ssh_sftp:write(SftpPid, Handle, "another hi\n") end), + %% need a small pause here to ensure ssh_sftp:write is executed + ct:sleep(10), + ssh_connection_handler:renegotiate(ConnectionRef), + ssh_relay:release(RelayPid, rx), + + timer:sleep(2000), + + Kex2 = ssh_test_lib:get_kex_init(ConnectionRef), + + false = (Kex2 == Kex1), + + ssh_relay:stop(RelayPid), + ssh_sftp:stop_channel(SftpPid), + ssh:close(ConnectionRef), + ssh:stop_daemon(Pid). + %%-------------------------------------------------------------------- %% Internal functions ------------------------------------------------ %%-------------------------------------------------------------------- diff --git a/lib/ssh/test/ssh_basic_SUITE_data/id_ed25519 b/lib/ssh/test/ssh_basic_SUITE_data/id_ed25519 new file mode 100644 index 0000000000..401a3e4a9a --- /dev/null +++ b/lib/ssh/test/ssh_basic_SUITE_data/id_ed25519 @@ -0,0 +1,7 @@ +-----BEGIN OPENSSH PRIVATE KEY----- +b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW +QyNTUxOQAAACDm9P8/gC0IOKmwHLSvkmEtS2Xx0RRqUDqC6wY6UgDVnwAAAJg3+6xpN/us +aQAAAAtzc2gtZWQyNTUxOQAAACDm9P8/gC0IOKmwHLSvkmEtS2Xx0RRqUDqC6wY6UgDVnw +AAAEBzC/Z2WGJhZ3l3tIBnUc6DCbp+lXY2yc2RRpWQTdf8sub0/z+ALQg4qbActK+SYS1L +ZfHRFGpQOoLrBjpSANWfAAAAE3VhYmhuaWxAZWx4YWRsajNxMzIBAg== +-----END OPENSSH PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_basic_SUITE_data/id_ed25519.pub b/lib/ssh/test/ssh_basic_SUITE_data/id_ed25519.pub new file mode 100644 index 0000000000..a5c03b19c1 --- /dev/null +++ b/lib/ssh/test/ssh_basic_SUITE_data/id_ed25519.pub @@ -0,0 +1 @@ +ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOb0/z+ALQg4qbActK+SYS1LZfHRFGpQOoLrBjpSANWf uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_basic_SUITE_data/id_ed448 b/lib/ssh/test/ssh_basic_SUITE_data/id_ed448 new file mode 100644 index 0000000000..8ecfd710dc --- /dev/null +++ b/lib/ssh/test/ssh_basic_SUITE_data/id_ed448 @@ -0,0 +1,10 @@ +-----BEGIN OPENSSH PRIVATE KEY----- +b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAASgAAAAlz +c2gtZWQ0NDgAAAA53OqeePNaG/NJmoMbELhskKrAHNhLZ6AQm1WjbpMoseNl/OFh +1xznExpUPqTLX36fHYsAaWRHABQAAAAA0AAAEREAABERAAAACXNzaC1lZDQ0OAAA +ADnc6p5481ob80magxsQuGyQqsAc2EtnoBCbVaNukyix42X84WHXHOcTGlQ+pMtf +fp8diwBpZEcAFAAAAAByzSPST3FCdOdENDI3uTKQ9RH2Ql+Y5kRZ/yA+iYUIP/32 +BQBVOrwOBc0CGEvbicTM1n4YeVEmfrMo3OqeePNaG/NJmoMbELhskKrAHNhLZ6AQ +m1WjbpMoseNl/OFh1xznExpUPqTLX36fHYsAaWRHABQAAAAAAAECAwQ= +-----END OPENSSH PRIVATE KEY----- + diff --git a/lib/ssh/test/ssh_basic_SUITE_data/id_ed448.pub b/lib/ssh/test/ssh_basic_SUITE_data/id_ed448.pub new file mode 100644 index 0000000000..cec0765a5d --- /dev/null +++ b/lib/ssh/test/ssh_basic_SUITE_data/id_ed448.pub @@ -0,0 +1 @@ +ssh-ed448 AAAACXNzaC1lZDQ0OAAAADnc6p5481ob80magxsQuGyQqsAc2EtnoBCbVaNukyix42X84WHXHOcTGlQ+pMtffp8diwBpZEcAFAA= uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_basic_SUITE_data/ssh_host_ed25519_key b/lib/ssh/test/ssh_basic_SUITE_data/ssh_host_ed25519_key new file mode 100644 index 0000000000..13a8fcf491 --- /dev/null +++ b/lib/ssh/test/ssh_basic_SUITE_data/ssh_host_ed25519_key @@ -0,0 +1,7 @@ +-----BEGIN OPENSSH PRIVATE KEY----- +b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW +QyNTUxOQAAACBJSOuiYGWaO9lye8Bgafod1kw8P6cV3Xb2qJgCB6yJfQAAAJi+h4O7voeD +uwAAAAtzc2gtZWQyNTUxOQAAACBJSOuiYGWaO9lye8Bgafod1kw8P6cV3Xb2qJgCB6yJfQ +AAAEBaOcJfGPNemKc1wPHTCmM4Kwvh6dZ0CqY14UT361UnN0lI66JgZZo72XJ7wGBp+h3W +TDw/pxXddvaomAIHrIl9AAAAE3VhYmhuaWxAZWx4YWRsajNxMzIBAg== +-----END OPENSSH PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_basic_SUITE_data/ssh_host_ed25519_key.pub b/lib/ssh/test/ssh_basic_SUITE_data/ssh_host_ed25519_key.pub new file mode 100644 index 0000000000..156ef4045c --- /dev/null +++ b/lib/ssh/test/ssh_basic_SUITE_data/ssh_host_ed25519_key.pub @@ -0,0 +1 @@ +ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIElI66JgZZo72XJ7wGBp+h3WTDw/pxXddvaomAIHrIl9 uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_basic_SUITE_data/ssh_host_ed448_key b/lib/ssh/test/ssh_basic_SUITE_data/ssh_host_ed448_key new file mode 100644 index 0000000000..31a7e4e8c3 --- /dev/null +++ b/lib/ssh/test/ssh_basic_SUITE_data/ssh_host_ed448_key @@ -0,0 +1,10 @@ +-----BEGIN OPENSSH PRIVATE KEY----- +b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAASgAAAAlz +c2gtZWQ0NDgAAAA5X9dEm1m0Yf0s54fsYWrUah2hNCSFpw4fig6nXYDpZ3jt8SR2 +m0bHBhvWeD3x5Q9s0foavq/oJWGAAAAA0AAAEREAABERAAAACXNzaC1lZDQ0OAAA +ADlf10SbWbRh/Sznh+xhatRqHaE0JIWnDh+KDqddgOlneO3xJHabRscGG9Z4PfHl +D2zR+hq+r+glYYAAAABybIKlYsuAjRDWMr6JyFE+v2ySnzTd+oyfY8mWDvbjSKNS +jIo/zC8ETjmj/FuUSS+PAy51SaIAmPlbX9dEm1m0Yf0s54fsYWrUah2hNCSFpw4f +ig6nXYDpZ3jt8SR2m0bHBhvWeD3x5Q9s0foavq/oJWGAAAAAAAECAwQ= +-----END OPENSSH PRIVATE KEY----- + diff --git a/lib/ssh/test/ssh_basic_SUITE_data/ssh_host_ed448_key.pub b/lib/ssh/test/ssh_basic_SUITE_data/ssh_host_ed448_key.pub new file mode 100644 index 0000000000..8c390dcb58 --- /dev/null +++ b/lib/ssh/test/ssh_basic_SUITE_data/ssh_host_ed448_key.pub @@ -0,0 +1 @@ +ssh-ed448 AAAACXNzaC1lZDQ0OAAAADlf10SbWbRh/Sznh+xhatRqHaE0JIWnDh+KDqddgOlneO3xJHabRscGG9Z4PfHlD2zR+hq+r+glYYA= diff --git a/lib/ssh/test/ssh_bench_SUITE.erl b/lib/ssh/test/ssh_bench_SUITE.erl index b6c6147646..2ac4e5636a 100644 --- a/lib/ssh/test/ssh_bench_SUITE.erl +++ b/lib/ssh/test/ssh_bench_SUITE.erl @@ -1,7 +1,7 @@ %%%------------------------------------------------------------------- %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2015-2017. All Rights Reserved. +%% Copyright Ericsson AB 2015-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -65,10 +65,10 @@ init_per_suite(Config) -> {preferred_algorithms, Algs}, {modify_algorithms,[{prepend,[{cipher,[none]}, {mac,[none]} - ]}, - {rm, [{cipher,['[email protected]', - '[email protected]']} - ]} + ]} + %% ,{rm, [{cipher,['[email protected]', + %% '[email protected]']} + %% ]} ]}, {max_random_length_padding, 0}, {subsystems, [{"/dev/null", {ssh_bench_dev_null,[DataSize]}}]} @@ -109,11 +109,10 @@ connect(Config) -> lists:foreach( fun(KexAlg) -> PrefAlgs = preferred_algorithms(KexAlg), - report([{value, measure_connect(Config, - [{preferred_algorithms,PrefAlgs}])}, - {suite, ?MODULE}, - {name, mk_name(["Connect erlc erld ",KexAlg," [µs]"])} - ]) + TimeMicroSec = measure_connect(Config, + [{preferred_algorithms,PrefAlgs}]), + report(["Connect erlc erld ",KexAlg," [connects per sec]"], + 1000000 / TimeMicroSec) end, KexAlgs). @@ -130,7 +129,7 @@ measure_connect(Config, Opts) -> [begin {Time, {ok,Pid}} = timer:tc(ssh,connect,["localhost", Port, ConnectOptions]), ssh:close(Pid), - Time + Time % in µs end || _ <- lists:seq(1,?Nruns)]). %%%---------------------------------------------------------------- @@ -152,7 +151,8 @@ transfer_text(Config) -> || {Crypto,Mac} <- [{ none, none}, {'aes128-ctr', 'hmac-sha1'}, {'aes256-ctr', 'hmac-sha1'}, -%% {'[email protected]', 'hmac-sha1'}, +{'[email protected]', 'hmac-sha1'}, +{'[email protected]', 'hmac-sha1'}, {'aes128-cbc', 'hmac-sha1'}, {'3des-cbc', 'hmac-sha1'}, {'aes128-ctr', 'hmac-sha2-256'}, @@ -177,34 +177,32 @@ gen_data(DataSz) -> <<Data0/binary, Data1/binary>>. -%% connect_measure(Port, Cipher, Mac, Data, Options) -> -%% report([{value, 1}, -%% {suite, ?MODULE}, -%% {name, mk_name(["Transfer 1M bytes ",Cipher,"/",Mac," [µs]"])}]); connect_measure(Port, Cipher, Mac, Data, Options) -> - AES_GCM = {cipher,['[email protected]', - '[email protected]']}, + AES_GCM = {cipher, + []}, + %% ['[email protected]', + %% '[email protected]']}, AlgOpt = case {Cipher,Mac} of {none,none} -> [{modify_algorithms,[{prepend, [{cipher,[Cipher]}, - {mac,[Mac]}]}, - {rm,[AES_GCM]} + {mac,[Mac]}]} +%%% ,{rm,[AES_GCM]} ]}]; {none,_} -> - [{modify_algorithms,[{prepend, [{cipher,[Cipher]}]}, - {rm,[AES_GCM]} + [{modify_algorithms,[{prepend, [{cipher,[Cipher]}]} +%%% ,{rm,[AES_GCM]} ]}, {preferred_algorithms, [{mac,[Mac]}]}]; {_,none} -> - [{modify_algorithms,[{prepend, [{mac,[Mac]}]}, - {rm,[AES_GCM]} + [{modify_algorithms,[{prepend, [{mac,[Mac]}]} +%%% ,{rm,[AES_GCM]} ]}, {preferred_algorithms, [{cipher,[Cipher]}]}]; _ -> [{preferred_algorithms, [{cipher,[Cipher]}, - {mac,[Mac]}]}, - {modify_algorithms, [{rm,[AES_GCM]}]} + {mac,[Mac]}]} +%%% ,{modify_algorithms, [{rm,[AES_GCM]}]} ] end, Times = @@ -217,10 +215,8 @@ connect_measure(Port, Cipher, Mac, Data, Options) -> ssh:close(C), Time end || _ <- lists:seq(1,?Nruns)], - - report([{value, median(Times)}, - {suite, ?MODULE}, - {name, mk_name(["Transfer 1M bytes ",Cipher,"/",Mac," [µs]"])}]). + report(["Transfer ",Cipher,"/",Mac," [Mbyte per sec]"], + 1000000 / median(Times)). send_wait_acc(C, Ch, Data) -> ssh_connection:send(C, Ch, Data), @@ -235,12 +231,6 @@ send_wait_acc(C, Ch, Data) -> %%% %%%---------------------------------------------------------------- -mk_name(Name) -> [char(C) || C <- lists:concat(Name)]. - -char($-) -> $_; -char(C) -> C. - -%%%---------------------------------------------------------------- preferred_algorithms(KexAlg) -> [{kex, [KexAlg]}, {public_key, ['ssh-rsa']}, @@ -262,11 +252,22 @@ median(Data) when is_list(Data) -> 1 -> lists:nth(N div 2 + 1, SortedData) end, - ct:log("median(~p) = ~p",[SortedData,Median]), + ct:pal("median(~p) = ~p",[SortedData,Median]), Median. +%%%---------------------------------------------------------------- +report(LabelList, Value) -> + Label = report_chars(lists:concat(LabelList)), + ct:pal("ct_event:notify ~p: ~p", [Label, Value]), + ct_event:notify( + #event{name = benchmark_data, + data = [{suite, ?MODULE}, + {name, Label}, + {value, Value}]}). + +report_chars(Cs) -> + [case C of + $- -> $_; + _ -> C + end || C <- Cs]. -report(Data) -> - ct:log("EventData = ~p",[Data]), - ct_event:notify(#event{name = benchmark_data, - data = Data}). diff --git a/lib/ssh/test/ssh_bench_dev_null.erl b/lib/ssh/test/ssh_bench_dev_null.erl index 5166247714..868eea5643 100644 --- a/lib/ssh/test/ssh_bench_dev_null.erl +++ b/lib/ssh/test/ssh_bench_dev_null.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2005-2017. All Rights Reserved. +%% Copyright Ericsson AB 2005-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -22,7 +22,7 @@ %%% Description: Example ssh server -module(ssh_bench_dev_null). --behaviour(ssh_daemon_channel). +-behaviour(ssh_server_channel). -record(state, { cm, diff --git a/lib/ssh/test/ssh_chan_behaviours_SUITE.erl b/lib/ssh/test/ssh_chan_behaviours_SUITE.erl new file mode 100644 index 0000000000..16ed152bcd --- /dev/null +++ b/lib/ssh/test/ssh_chan_behaviours_SUITE.erl @@ -0,0 +1,152 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2018-2018. All Rights Reserved. +%% +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% + +%% + +-module(ssh_chan_behaviours_SUITE). + +-include_lib("common_test/include/ct.hrl"). +-include_lib("ssh/src/ssh.hrl"). +-include("ssh_test_lib.hrl"). + +%% Note: This directive should only be used in test suites. +-compile(export_all). + +%%-------------------------------------------------------------------- +%% Common Test interface functions ----------------------------------- +%%-------------------------------------------------------------------- + +suite() -> + [{ct_hooks,[ts_install_cth]}, + {timetrap,{seconds,60}}]. + +all() -> + [ + noexist_subsystem, + undefined_subsystem, + defined_subsystem, + subsystem_client + ]. + +%%-------------------------------------------------------------------- +init_per_suite(Config) -> + ?CHECK_CRYPTO( + begin + ssh:start(), + Config + end). + +end_per_suite(_Config) -> + {Time,R} = timer:tc(ssh, stop, []), + ct:log("Stop ssh: ~p ms",[(100*(Time div 1000)) / 100]), + R. + +init_per_testcase(_TC, Config) -> + SubSystems = [ + {"bad_cb", {ssh_chan_behaviours_undefined, []}}, % A non-existing file + {"ch1", {ssh_chan_behaviours_server, [self(),true]}} + ], + {Pid, Host, Port} = ssh_test_lib:std_daemon(Config, [{subsystems,SubSystems}]), + C = ssh_test_lib:std_connect(Config, Host, Port, []), + [{connref,C}, {daemon_pid,Pid}| Config]. + +end_per_testcase(_TC, Config) -> + {Time,_} = timer:tc(ssh, stop_daemon, [proplists:get_value(daemon_pid,Config)]), + ct:log("Stop daemon: ~p ms",[(100*(Time div 1000)) / 100]), + case flush() of + [] -> ok; + Msgs -> ct:pal("Unhandled messages:~n~p", [Msgs]) + end. + + +-define(EXPECT(What, Bind), + Bind = + (fun() -> + receive What -> + ct:log("~p:~p ~p got ~p",[?MODULE,?LINE,self(),What]), + Bind + after 5000 -> + ct:log("~p:~p ~p Flushed:~n~p",[?MODULE,?LINE,self(),flush()]), + ct:fail("Timeout!",[]) + end + end)() + ). + +%%-------------------------------------------------------------------- +%% Test Cases -------------------------------------------------------- +%%-------------------------------------------------------------------- +%% Try start a subsystem whos name is not known by the server +noexist_subsystem(Config) -> + C = proplists:get_value(connref, Config), + {ok, Ch} = ssh_connection:session_channel(C, infinity), + failure = ssh_connection:subsystem(C, Ch, "noexist", infinity), + ok = ssh_connection:close(C, Ch), + ?EXPECT({ssh_cm,C,{closed,Ch}},[]), + ok. + +%% Try to start a subsystem with a known name, but without any callback file +undefined_subsystem(Config) -> + C = proplists:get_value(connref, Config), + {ok, Ch} = ssh_connection:session_channel(C, infinity), + failure = ssh_connection:subsystem(C, Ch, "bad_cb", infinity), + ok = ssh_connection:close(C, Ch), + ?EXPECT({ssh_cm,C,{closed,Ch}},[]), % self() is instead of a proper channel handler + ok. + +%% Try to start and stop a subsystem with known name and defined callback file +defined_subsystem(Config) -> + C = proplists:get_value(connref, Config), + {ok, Ch1} = ssh_connection:session_channel(C, infinity), + + success = ssh_connection:subsystem(C, Ch1, "ch1", infinity), + IDsrv = ?EXPECT({{_Csrv,_Ch1srv}, {ssh_channel_up,_Ch1srv,_Csrv}}, {_Csrv,_Ch1srv}), + + ok = ssh_connection:close(C, Ch1), + ?EXPECT({IDsrv, {terminate,normal}}, []), + ?EXPECT({ssh_cm, C, {closed,Ch1}}, []), % self() is instead of a proper channel handler + ok. + +%% Try to start and stop a subsystem from a ssh_client_channel behviour +subsystem_client(Config) -> + C = proplists:get_value(connref, Config), + + {ok,ChRef} = ssh_chan_behaviours_client:start_link(C), + IDclt = ?EXPECT({{C,Ch1clt}, {ssh_channel_up,Ch1clt,C}}, {C,Ch1clt}), + IDsrv = ?EXPECT({{_Csrv,Ch1srv}, {ssh_channel_up,Ch1srv,_Csrv}}, {_Csrv,Ch1srv}), + + ok = ssh_chan_behaviours_client:stop(ChRef), + ?EXPECT({IDclt, {terminate,normal}}, []), % From the proper channel handler + ?EXPECT({IDsrv, {terminate,normal}}, []), + ok. + +%%%================================================================ +%%% +%%% + +flush() -> lists:reverse(flush([])). + +flush(Acc) -> + receive + M -> + flush([M|Acc]) + after 0 -> + Acc + end. + diff --git a/lib/ssh/test/ssh_renegotiate_SUITE_data/ssh_host_dsa_key b/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_dsa_key index 51ab6fbd88..51ab6fbd88 100644 --- a/lib/ssh/test/ssh_renegotiate_SUITE_data/ssh_host_dsa_key +++ b/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_dsa_key diff --git a/lib/ssh/test/ssh_renegotiate_SUITE_data/ssh_host_dsa_key.pub b/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_dsa_key.pub index 4dbb1305b0..4dbb1305b0 100644 --- a/lib/ssh/test/ssh_renegotiate_SUITE_data/ssh_host_dsa_key.pub +++ b/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_dsa_key.pub diff --git a/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_ecdsa_key b/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_ecdsa_key new file mode 100644 index 0000000000..fb1a862ded --- /dev/null +++ b/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_ecdsa_key @@ -0,0 +1,6 @@ +-----BEGIN EC PRIVATE KEY----- +MIGkAgEBBDArxbDfh3p1okrD9wQw6jJ4d4DdlBPD5GqXE8bIeRJiK41Sh40LgvPw +mkqEDSXK++CgBwYFK4EEACKhZANiAAScl43Ih2lWTDKrSox5ve5uiTXil4smsup3 +CfS1XPjKxgBAmlfBim8izbdrT0BFdQzz2joduNMtpt61wO4rGs6jm0UP7Kim9PC7 +Hneb/99fIYopdMH5NMnk60zGO1uZ2vc= +-----END EC PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_ecdsa_key.pub b/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_ecdsa_key.pub new file mode 100644 index 0000000000..428d5fb7d7 --- /dev/null +++ b/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_ecdsa_key.pub @@ -0,0 +1 @@ +ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBJyXjciHaVZMMqtKjHm97m6JNeKXiyay6ncJ9LVc+MrGAECaV8GKbyLNt2tPQEV1DPPaOh240y2m3rXA7isazqObRQ/sqKb08Lsed5v/318hiil0wfk0yeTrTMY7W5na9w== uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_renegotiate_SUITE_data/ssh_host_rsa_key b/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_rsa_key index 79968bdd7d..79968bdd7d 100644 --- a/lib/ssh/test/ssh_renegotiate_SUITE_data/ssh_host_rsa_key +++ b/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_rsa_key diff --git a/lib/ssh/test/ssh_renegotiate_SUITE_data/ssh_host_rsa_key.pub b/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_rsa_key.pub index 75d2025c71..75d2025c71 100644 --- a/lib/ssh/test/ssh_renegotiate_SUITE_data/ssh_host_rsa_key.pub +++ b/lib/ssh/test/ssh_chan_behaviours_SUITE_data/ssh_host_rsa_key.pub diff --git a/lib/ssh/test/ssh_chan_behaviours_client.erl b/lib/ssh/test/ssh_chan_behaviours_client.erl new file mode 100644 index 0000000000..15f17733d6 --- /dev/null +++ b/lib/ssh/test/ssh_chan_behaviours_client.erl @@ -0,0 +1,143 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2005-2018. All Rights Reserved. +%% +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% + +%% + +%%% Description: Example ssh client +-module(ssh_chan_behaviours_client). +-behaviour(ssh_client_channel). +-record(state, { + parent, + cm, + ch, + dbg + }). +-export([start_link/1, start/1, + stop/1, send_eof/1, + init/1, handle_msg/2, handle_ssh_msg/2, terminate/2, + code_change/3, handle_call/3, handle_cast/2 + ]). + +-define(DBG(State,Fmt,Args), + case State#state.dbg of + true -> ct:log("~p:~p ~p C=~p Ch=~p "++Fmt, + [?MODULE,?LINE,self(),State#state.cm,State#state.ch|Args]); + false -> ok + end). + + +start_link(C) -> + {ok, Ch} = ssh_connection:session_channel(C, infinity), + ssh_client_channel:start_link(C, Ch, ssh_chan_behaviours_client, [C, Ch, self(), true]). + +start(C) -> + {ok, Ch} = ssh_connection:session_channel(C, infinity), + ssh_client_channel:start(C, Ch, ssh_chan_behaviours_client, [C, Ch, self(), true]). + +send_eof(ChRef) -> + ssh_client_channel:call(ChRef, send_eof). + +stop(ChRef) -> + ssh_client_channel:call(ChRef, stop). + + +init([C, Ch, Parent, Dbg|_Exec]) -> + case ssh_connection:subsystem(C, Ch, "ch1", infinity) of + success -> + State = #state{cm = C, + ch = Ch, + parent=Parent, + dbg=Dbg}, + ?DBG(State, "callback spawned, parent = ~p", [Parent]), + {ok, State}; + + Other -> + {stop, Other} + end. + +handle_msg({ssh_channel_up, ChannelId, ConnectionManager}=M, State0) -> + State = State0#state{cm = ConnectionManager, + ch = ChannelId}, + tell_parent(M, State), + ?DBG(State, "ssh_channel_up",[]), + {ok, State}. + +handle_ssh_msg({ssh_cm, C, {data, Ch, 0, Data}}=M, #state{ch=Ch,cm=C} = State) -> + tell_parent(M, State), + ?DBG(State, "ssh_cm data size(Data)=~p",[size(Data)]), + {ok, State}; + +handle_ssh_msg({ssh_cm, C, {data, Ch, Type, Data}}=M, #state{ch=Ch,cm=C} = State) -> + tell_parent(M, State), + ?DBG(State, "ssh_cm data Type=~p : ~p",[Type,Data]), + {ok, State}; + +handle_ssh_msg({ssh_cm, C, {eof, Ch}}=M, #state{ch=Ch,cm=C} = State) -> + tell_parent(M, State), + ?DBG(State, "eof",[]), + {ok, State}; + +handle_ssh_msg({ssh_cm, C, {signal, _Ch, _SigNameStr}=Sig} = M, #state{ch=Ch,cm=C} = State) -> + %% Ignore signals according to RFC 4254 section 6.9. + tell_parent(M, State), + ?DBG(State, "~p",[Sig]), + {ok, State}; + +handle_ssh_msg({ssh_cm, C, {exit_signal, Ch, _, _Error, _}=Sig}=M, #state{ch=Ch,cm=C} = State) -> + tell_parent(M, State), + ?DBG(State, "~p",[Sig]), + {stop, Ch, State}; + +handle_ssh_msg({ssh_cm, C, {exit_status, Ch, _Status}=Sig}=M, #state{ch=Ch,cm=C} = State) -> + tell_parent(M, State), + ?DBG(State, "~p",[Sig]), + {stop, Ch, State}. + + +handle_call(send_eof, _From,#state{ch=Ch,cm=C} = State) -> + {reply, ssh_connection:send_eof(C,Ch), State}; + +handle_call(stop, _From, State) -> + {stop, normal, ok, State}; + +handle_call(Msg, _From, State) -> + ?DBG(State, "Unknown call ~p", [Msg]), + {reply, {unknown_call,Msg}, State}. + + +terminate(Reason, State) -> + tell_parent({terminate,Reason}, State), + ?DBG(State, "terminate Reason = ~p",[Reason]). + + +handle_cast(Msg, State) -> + ?DBG(State, "Unknown cast ~p", [Msg]), + {noreply, State}. + +code_change(_OldVsn, State, _Extra) -> {ok, State}. + +%%%================================================================ +%%% +%%% + +tell_parent(Msg, #state{parent = Parent, + cm = C, + ch = Ch}) -> Parent ! {{C,Ch}, Msg}. + diff --git a/lib/ssh/test/ssh_chan_behaviours_server.erl b/lib/ssh/test/ssh_chan_behaviours_server.erl new file mode 100644 index 0000000000..1408675a6e --- /dev/null +++ b/lib/ssh/test/ssh_chan_behaviours_server.erl @@ -0,0 +1,96 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2005-2018. All Rights Reserved. +%% +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% + +%% + +%%% Description: Example ssh server +-module(ssh_chan_behaviours_server). +-behaviour(ssh_server_channel). +-record(state, { + parent, + cm, + ch, + dbg + }). +-export([init/1, handle_msg/2, handle_ssh_msg/2, terminate/2]). + +-define(DBG(State,Fmt,Args), + case State#state.dbg of + true -> ct:log("~p:~p ~p C=~p Ch=~p "++Fmt, + [?MODULE,?LINE,self(),State#state.cm,State#state.ch|Args]); + false -> ok + end). + + +init([Pid,Dbg|_Exec]) -> + {ok, #state{parent=Pid, + dbg=Dbg}}. + +handle_msg({ssh_channel_up, ChannelId, ConnectionManager}=M, State0) -> + State = State0#state{cm = ConnectionManager, + ch = ChannelId}, + tell_parent(M, State), + ?DBG(State, "ssh_channel_up",[]), + {ok, State}. + +handle_ssh_msg({ssh_cm, C, {data, Ch, 0, Data}}=M, #state{ch=Ch,cm=C} = State) -> + tell_parent(M, State), + ?DBG(State, "ssh_cm data size(Data)=~p",[size(Data)]), + {ok, State}; + +handle_ssh_msg({ssh_cm, C, {data, Ch, Type, Data}}=M, #state{ch=Ch,cm=C} = State) -> + tell_parent(M, State), + ?DBG(State, "ssh_cm data Type=~p : ~p",[Type,Data]), + {ok, State}; + +handle_ssh_msg({ssh_cm, C, {eof, Ch}}=M, #state{ch=Ch,cm=C} = State) -> + tell_parent(M, State), + ?DBG(State, "eof",[]), + {ok, State}; + +handle_ssh_msg({ssh_cm, C, {signal, _Ch, _SigNameStr}=Sig} = M, #state{ch=Ch,cm=C} = State) -> + %% Ignore signals according to RFC 4254 section 6.9. + tell_parent(M, State), + ?DBG(State, "~p",[Sig]), + {ok, State}; + +handle_ssh_msg({ssh_cm, C, {exit_signal, Ch, _, _Error, _}=Sig}=M, #state{ch=Ch,cm=C} = State) -> + tell_parent(M, State), + ?DBG(State, "~p",[Sig]), + {stop, Ch, State}; + +handle_ssh_msg({ssh_cm, C, {exit_status, Ch, _Status}=Sig}=M, #state{ch=Ch,cm=C} = State) -> + tell_parent(M, State), + ?DBG(State, "~p",[Sig]), + {stop, Ch, State}. + +terminate(Reason, State) -> + tell_parent({terminate,Reason}, State), + ?DBG(State, "terminate Reason = ~p",[Reason]), + ok. + +%%%================================================================ +%%% +%%% + +tell_parent(Msg, #state{parent = Parent, + cm = C, + ch = Ch}) -> Parent ! {{C,Ch}, Msg}. + diff --git a/lib/ssh/test/ssh_compat_SUITE.erl b/lib/ssh/test/ssh_compat_SUITE.erl index f7eda1dc08..8e82527c6e 100644 --- a/lib/ssh/test/ssh_compat_SUITE.erl +++ b/lib/ssh/test/ssh_compat_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -41,8 +41,7 @@ %%-------------------------------------------------------------------- suite() -> - [%%{ct_hooks,[ts_install_cth]}, - {timetrap,{seconds,40}}]. + [{timetrap,{seconds,60}}]. all() -> %% [check_docker_present] ++ @@ -649,6 +648,7 @@ setup_remote_priv_and_local_auth_keys(KeyAlg, IP, Port, UserDir, Config) -> {silently_accept_hosts,true}, {user_interaction,false} ]), + rm_id_in_remote_dir(Ch, ".ssh"), _ = ssh_sftp:make_dir(Ch, ".ssh"), DstFile = filename:join(".ssh", dst_filename(user,KeyAlg)), ok = ssh_sftp:write_file(Ch, DstFile, Priv), @@ -659,6 +659,18 @@ setup_remote_priv_and_local_auth_keys(KeyAlg, IP, Port, UserDir, Config) -> ok = ssh:close(Cc), UserDir. +rm_id_in_remote_dir(Ch, Dir) -> + case ssh_sftp:list_dir(Ch, Dir) of + {error,_Error} -> + ok; + {ok,FileNames} -> + lists:foreach(fun("id_"++_ = F) -> + ok = ssh_sftp:delete(Ch, filename:join(Dir,F)); + (_) -> + leave + end, FileNames) + end. + user_priv_pub_keys(Config, KeyAlg) -> priv_pub_keys("users_keys", user, Config, KeyAlg). host_priv_pub_keys(Config, KeyAlg) -> priv_pub_keys("host_keys", host, Config, KeyAlg). @@ -674,6 +686,8 @@ src_filename(user, 'ssh-rsa' ) -> "id_rsa"; src_filename(user, 'rsa-sha2-256' ) -> "id_rsa"; src_filename(user, 'rsa-sha2-512' ) -> "id_rsa"; src_filename(user, 'ssh-dss' ) -> "id_dsa"; +src_filename(user, 'ssh-ed25519' ) -> "id_ed25519"; +src_filename(user, 'ssh-ed448' ) -> "id_ed448"; src_filename(user, 'ecdsa-sha2-nistp256') -> "id_ecdsa256"; src_filename(user, 'ecdsa-sha2-nistp384') -> "id_ecdsa384"; src_filename(user, 'ecdsa-sha2-nistp521') -> "id_ecdsa521"; @@ -681,6 +695,8 @@ src_filename(host, 'ssh-rsa' ) -> "ssh_host_rsa_key"; src_filename(host, 'rsa-sha2-256' ) -> "ssh_host_rsa_key"; src_filename(host, 'rsa-sha2-512' ) -> "ssh_host_rsa_key"; src_filename(host, 'ssh-dss' ) -> "ssh_host_dsa_key"; +src_filename(host, 'ssh-ed25519' ) -> "ssh_host_ed25519_key"; +src_filename(host, 'ssh-ed448' ) -> "ssh_host_ed448_key"; src_filename(host, 'ecdsa-sha2-nistp256') -> "ssh_host_ecdsa_key256"; src_filename(host, 'ecdsa-sha2-nistp384') -> "ssh_host_ecdsa_key384"; src_filename(host, 'ecdsa-sha2-nistp521') -> "ssh_host_ecdsa_key521". @@ -689,6 +705,8 @@ dst_filename(user, 'ssh-rsa' ) -> "id_rsa"; dst_filename(user, 'rsa-sha2-256' ) -> "id_rsa"; dst_filename(user, 'rsa-sha2-512' ) -> "id_rsa"; dst_filename(user, 'ssh-dss' ) -> "id_dsa"; +dst_filename(user, 'ssh-ed25519' ) -> "id_ed25519"; +dst_filename(user, 'ssh-ed448' ) -> "id_ed448"; dst_filename(user, 'ecdsa-sha2-nistp256') -> "id_ecdsa"; dst_filename(user, 'ecdsa-sha2-nistp384') -> "id_ecdsa"; dst_filename(user, 'ecdsa-sha2-nistp521') -> "id_ecdsa"; @@ -696,6 +714,8 @@ dst_filename(host, 'ssh-rsa' ) -> "ssh_host_rsa_key"; dst_filename(host, 'rsa-sha2-256' ) -> "ssh_host_rsa_key"; dst_filename(host, 'rsa-sha2-512' ) -> "ssh_host_rsa_key"; dst_filename(host, 'ssh-dss' ) -> "ssh_host_dsa_key"; +dst_filename(host, 'ssh-ed25519' ) -> "ssh_host_ed25519_key"; +dst_filename(host, 'ssh-ed448' ) -> "ssh_host_ed448_key"; dst_filename(host, 'ecdsa-sha2-nistp256') -> "ssh_host_ecdsa_key"; dst_filename(host, 'ecdsa-sha2-nistp384') -> "ssh_host_ecdsa_key"; dst_filename(host, 'ecdsa-sha2-nistp521') -> "ssh_host_ecdsa_key". @@ -1106,7 +1126,24 @@ prepare_local_directory(ServerRootDir) -> "chmod 222 unreadable_file", "exit"]. + check_local_directory(ServerRootDir) -> + TimesToTry = 3, % sleep 0.5, 1, 2 and then 4 secs (7.5s in total) + check_local_directory(ServerRootDir, 500, TimesToTry-1). + +check_local_directory(ServerRootDir, SleepTime, N) -> + case do_check_local_directory(ServerRootDir) of + {error,Error} when N>0 -> + %% Could be that the erlang side is faster and the docker's operations + %% are not yet finalized. + %% Sleep for a while and retry a few times: + timer:sleep(SleepTime), + check_local_directory(ServerRootDir, 2*SleepTime, N-1); + Other -> + Other + end. + +do_check_local_directory(ServerRootDir) -> case lists:sort(ok(file:list_dir(ServerRootDir)) -- [".",".."]) of ["ex_tst1","mydir","tst2"] -> {ok,Expect} = file:read_file(filename:join(ServerRootDir,"ex_tst1")), @@ -1141,6 +1178,7 @@ check_local_directory(ServerRootDir) -> {error,{bad_dir_contents,"/"}} end. + call_sftp_in_docker(Config, ServerIP, ServerPort, Cmnds, UserDir) -> {DockerIP,DockerPort} = ip_port(Config), {ok,C} = ssh:connect(DockerIP, DockerPort, diff --git a/lib/ssh/test/ssh_compat_SUITE_data/build_scripts/create_all b/lib/ssh/test/ssh_compat_SUITE_data/build_scripts/create_all index 0dcf8cb570..c2e77fcc79 100755 --- a/lib/ssh/test/ssh_compat_SUITE_data/build_scripts/create_all +++ b/lib/ssh/test/ssh_compat_SUITE_data/build_scripts/create_all @@ -18,6 +18,12 @@ SSH_SSL_VERSIONS=(\ openssh 7.6p1 openssl 1.0.2n \ \ openssh 7.6p1 libressl 2.6.4 \ + \ + openssh 7.7p1 openssl 1.0.2p \ + openssh 7.8p1 openssl 1.0.2p \ + openssh 7.9p1 openssl 1.0.2p \ + \ + openssh 7.9p1 libressl 2.6.4 \ ) if [ "x$1" == "x-b" ] diff --git a/lib/ssh/test/ssh_compat_SUITE_data/host_keys/ssh_host_ed25519_key b/lib/ssh/test/ssh_compat_SUITE_data/host_keys/ssh_host_ed25519_key new file mode 100644 index 0000000000..13a8fcf491 --- /dev/null +++ b/lib/ssh/test/ssh_compat_SUITE_data/host_keys/ssh_host_ed25519_key @@ -0,0 +1,7 @@ +-----BEGIN OPENSSH PRIVATE KEY----- +b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW +QyNTUxOQAAACBJSOuiYGWaO9lye8Bgafod1kw8P6cV3Xb2qJgCB6yJfQAAAJi+h4O7voeD +uwAAAAtzc2gtZWQyNTUxOQAAACBJSOuiYGWaO9lye8Bgafod1kw8P6cV3Xb2qJgCB6yJfQ +AAAEBaOcJfGPNemKc1wPHTCmM4Kwvh6dZ0CqY14UT361UnN0lI66JgZZo72XJ7wGBp+h3W +TDw/pxXddvaomAIHrIl9AAAAE3VhYmhuaWxAZWx4YWRsajNxMzIBAg== +-----END OPENSSH PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_compat_SUITE_data/host_keys/ssh_host_ed25519_key.pub b/lib/ssh/test/ssh_compat_SUITE_data/host_keys/ssh_host_ed25519_key.pub new file mode 100644 index 0000000000..156ef4045c --- /dev/null +++ b/lib/ssh/test/ssh_compat_SUITE_data/host_keys/ssh_host_ed25519_key.pub @@ -0,0 +1 @@ +ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIElI66JgZZo72XJ7wGBp+h3WTDw/pxXddvaomAIHrIl9 uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_compat_SUITE_data/host_keys/ssh_host_ed448_key b/lib/ssh/test/ssh_compat_SUITE_data/host_keys/ssh_host_ed448_key new file mode 100644 index 0000000000..31a7e4e8c3 --- /dev/null +++ b/lib/ssh/test/ssh_compat_SUITE_data/host_keys/ssh_host_ed448_key @@ -0,0 +1,10 @@ +-----BEGIN OPENSSH PRIVATE KEY----- +b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAASgAAAAlz +c2gtZWQ0NDgAAAA5X9dEm1m0Yf0s54fsYWrUah2hNCSFpw4fig6nXYDpZ3jt8SR2 +m0bHBhvWeD3x5Q9s0foavq/oJWGAAAAA0AAAEREAABERAAAACXNzaC1lZDQ0OAAA +ADlf10SbWbRh/Sznh+xhatRqHaE0JIWnDh+KDqddgOlneO3xJHabRscGG9Z4PfHl +D2zR+hq+r+glYYAAAABybIKlYsuAjRDWMr6JyFE+v2ySnzTd+oyfY8mWDvbjSKNS +jIo/zC8ETjmj/FuUSS+PAy51SaIAmPlbX9dEm1m0Yf0s54fsYWrUah2hNCSFpw4f +ig6nXYDpZ3jt8SR2m0bHBhvWeD3x5Q9s0foavq/oJWGAAAAAAAECAwQ= +-----END OPENSSH PRIVATE KEY----- + diff --git a/lib/ssh/test/ssh_compat_SUITE_data/host_keys/ssh_host_ed448_key.pub b/lib/ssh/test/ssh_compat_SUITE_data/host_keys/ssh_host_ed448_key.pub new file mode 100644 index 0000000000..8c390dcb58 --- /dev/null +++ b/lib/ssh/test/ssh_compat_SUITE_data/host_keys/ssh_host_ed448_key.pub @@ -0,0 +1 @@ +ssh-ed448 AAAACXNzaC1lZDQ0OAAAADlf10SbWbRh/Sznh+xhatRqHaE0JIWnDh+KDqddgOlneO3xJHabRscGG9Z4PfHlD2zR+hq+r+glYYA= diff --git a/lib/ssh/test/ssh_compat_SUITE_data/users_keys/id_ed25519 b/lib/ssh/test/ssh_compat_SUITE_data/users_keys/id_ed25519 new file mode 100644 index 0000000000..401a3e4a9a --- /dev/null +++ b/lib/ssh/test/ssh_compat_SUITE_data/users_keys/id_ed25519 @@ -0,0 +1,7 @@ +-----BEGIN OPENSSH PRIVATE KEY----- +b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW +QyNTUxOQAAACDm9P8/gC0IOKmwHLSvkmEtS2Xx0RRqUDqC6wY6UgDVnwAAAJg3+6xpN/us +aQAAAAtzc2gtZWQyNTUxOQAAACDm9P8/gC0IOKmwHLSvkmEtS2Xx0RRqUDqC6wY6UgDVnw +AAAEBzC/Z2WGJhZ3l3tIBnUc6DCbp+lXY2yc2RRpWQTdf8sub0/z+ALQg4qbActK+SYS1L +ZfHRFGpQOoLrBjpSANWfAAAAE3VhYmhuaWxAZWx4YWRsajNxMzIBAg== +-----END OPENSSH PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_compat_SUITE_data/users_keys/id_ed25519.pub b/lib/ssh/test/ssh_compat_SUITE_data/users_keys/id_ed25519.pub new file mode 100644 index 0000000000..a5c03b19c1 --- /dev/null +++ b/lib/ssh/test/ssh_compat_SUITE_data/users_keys/id_ed25519.pub @@ -0,0 +1 @@ +ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOb0/z+ALQg4qbActK+SYS1LZfHRFGpQOoLrBjpSANWf uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_compat_SUITE_data/users_keys/id_ed448 b/lib/ssh/test/ssh_compat_SUITE_data/users_keys/id_ed448 new file mode 100644 index 0000000000..8ecfd710dc --- /dev/null +++ b/lib/ssh/test/ssh_compat_SUITE_data/users_keys/id_ed448 @@ -0,0 +1,10 @@ +-----BEGIN OPENSSH PRIVATE KEY----- +b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAASgAAAAlz +c2gtZWQ0NDgAAAA53OqeePNaG/NJmoMbELhskKrAHNhLZ6AQm1WjbpMoseNl/OFh +1xznExpUPqTLX36fHYsAaWRHABQAAAAA0AAAEREAABERAAAACXNzaC1lZDQ0OAAA +ADnc6p5481ob80magxsQuGyQqsAc2EtnoBCbVaNukyix42X84WHXHOcTGlQ+pMtf +fp8diwBpZEcAFAAAAAByzSPST3FCdOdENDI3uTKQ9RH2Ql+Y5kRZ/yA+iYUIP/32 +BQBVOrwOBc0CGEvbicTM1n4YeVEmfrMo3OqeePNaG/NJmoMbELhskKrAHNhLZ6AQ +m1WjbpMoseNl/OFh1xznExpUPqTLX36fHYsAaWRHABQAAAAAAAECAwQ= +-----END OPENSSH PRIVATE KEY----- + diff --git a/lib/ssh/test/ssh_compat_SUITE_data/users_keys/id_ed448.pub b/lib/ssh/test/ssh_compat_SUITE_data/users_keys/id_ed448.pub new file mode 100644 index 0000000000..cec0765a5d --- /dev/null +++ b/lib/ssh/test/ssh_compat_SUITE_data/users_keys/id_ed448.pub @@ -0,0 +1 @@ +ssh-ed448 AAAACXNzaC1lZDQ0OAAAADnc6p5481ob80magxsQuGyQqsAc2EtnoBCbVaNukyix42X84WHXHOcTGlQ+pMtffp8diwBpZEcAFAA= uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_connection_SUITE.erl b/lib/ssh/test/ssh_connection_SUITE.erl index 9587c0c251..778e4a5fc8 100644 --- a/lib/ssh/test/ssh_connection_SUITE.erl +++ b/lib/ssh/test/ssh_connection_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -50,6 +50,13 @@ all() -> start_shell, start_shell_exec, start_shell_exec_fun, + start_shell_exec_fun2, + start_shell_exec_fun3, + start_shell_exec_direct_fun, + start_shell_exec_direct_fun2, + start_shell_exec_direct_fun3, + start_shell_exec_direct_fun1_error, + start_shell_exec_direct_fun1_error_type, start_shell_sock_exec_fun, start_shell_sock_daemon_exec, connect_sock_not_tcp, @@ -522,7 +529,7 @@ start_shell_exec(Config) when is_list(Config) -> {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SysDir}, {user_dir, UserDir}, {password, "morot"}, - {exec, {?MODULE,ssh_exec,[]}} ]), + {exec, {?MODULE,ssh_exec_echo,[]}} ]), ConnectionRef = ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true}, {user, "foo"}, @@ -535,7 +542,7 @@ start_shell_exec(Config) when is_list(Config) -> success = ssh_connection:exec(ConnectionRef, ChannelId0, "testing", infinity), receive - {ssh_cm, ConnectionRef, {data, _ChannelId, 0, <<"testing\r\n">>}} -> + {ssh_cm, ConnectionRef, {data, _ChannelId, 0, <<"echo testing\r\n">>}} -> ok after 5000 -> ct:fail("Exec Timeout") @@ -618,10 +625,49 @@ exec_erlang_term_non_default_shell(Config) when is_list(Config) -> TestResult. %%-------------------------------------------------------------------- -start_shell_exec_fun() -> - [{doc, "start shell to exec command"}]. +start_shell_exec_fun(Config) -> + do_start_shell_exec_fun(fun ssh_exec_echo/1, + "testing", <<"echo testing\r\n">>, 0, + Config). + +start_shell_exec_fun2(Config) -> + do_start_shell_exec_fun(fun ssh_exec_echo/2, + "testing", <<"echo foo testing\r\n">>, 0, + Config). + +start_shell_exec_fun3(Config) -> + do_start_shell_exec_fun(fun ssh_exec_echo/3, + "testing", <<"echo foo testing\r\n">>, 0, + Config). + +start_shell_exec_direct_fun(Config) -> + do_start_shell_exec_fun({direct, fun ssh_exec_direct_echo/1}, + "testing", <<"echo testing\n">>, 0, + Config). + +start_shell_exec_direct_fun2(Config) -> + do_start_shell_exec_fun({direct, fun ssh_exec_direct_echo/2}, + "testing", <<"echo foo testing">>, 0, + Config). + +start_shell_exec_direct_fun3(Config) -> + do_start_shell_exec_fun({direct, fun ssh_exec_direct_echo/3}, + "testing", <<"echo foo testing">>, 0, + Config). + +start_shell_exec_direct_fun1_error(Config) -> + do_start_shell_exec_fun({direct, fun ssh_exec_direct_echo_error_return/1}, + "testing", <<"Error in \"testing\": {bad}\n">>, 1, + Config). + +start_shell_exec_direct_fun1_error_type(Config) -> + do_start_shell_exec_fun({direct, fun ssh_exec_direct_echo_error_return_type/1}, + "testing", <<"Error in \"testing\": Bad exec-plugin return: very_bad\n">>, 1, + Config). + + -start_shell_exec_fun(Config) when is_list(Config) -> +do_start_shell_exec_fun(Fun, Command, Expect, ExpectType, Config) -> PrivDir = proplists:get_value(priv_dir, Config), UserDir = filename:join(PrivDir, nopubkey), % to make sure we don't use public-key-auth file:make_dir(UserDir), @@ -629,7 +675,7 @@ start_shell_exec_fun(Config) when is_list(Config) -> {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SysDir}, {user_dir, UserDir}, {password, "morot"}, - {exec, fun ssh_exec/1}]), + {exec, Fun}]), ConnectionRef = ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true}, {user, "foo"}, @@ -639,14 +685,19 @@ start_shell_exec_fun(Config) when is_list(Config) -> {ok, ChannelId0} = ssh_connection:session_channel(ConnectionRef, infinity), - success = ssh_connection:exec(ConnectionRef, ChannelId0, - "testing", infinity), + success = ssh_connection:exec(ConnectionRef, ChannelId0, Command, infinity), receive - {ssh_cm, ConnectionRef, {data, _ChannelId, 0, <<"testing\r\n">>}} -> + {ssh_cm, ConnectionRef, {data, _ChannelId, ExpectType, Expect}} -> ok after 5000 -> - ct:fail("Exec Timeout") + receive + Other -> + ct:pal("Received other:~n~p",[Other]), + ct:fail("Unexpected response") + after 0 -> + ct:fail("Exec Timeout") + end end, ssh:close(ConnectionRef), @@ -664,7 +715,7 @@ start_shell_sock_exec_fun(Config) when is_list(Config) -> {Pid, HostD, Port} = ssh_test_lib:daemon([{system_dir, SysDir}, {user_dir, UserDir}, {password, "morot"}, - {exec, fun ssh_exec/1}]), + {exec, fun ssh_exec_echo/1}]), Host = ssh_test_lib:ntoa(ssh_test_lib:mangle_connect_address(HostD)), {ok, Sock} = ssh_test_lib:gen_tcp_connect(Host, Port, [{active,false}]), @@ -680,7 +731,7 @@ start_shell_sock_exec_fun(Config) when is_list(Config) -> "testing", infinity), receive - {ssh_cm, ConnectionRef, {data, _ChannelId, 0, <<"testing\r\n">>}} -> + {ssh_cm, ConnectionRef, {data, _ChannelId, 0, <<"echo testing\r\n">>}} -> ok after 5000 -> ct:fail("Exec Timeout") @@ -704,7 +755,7 @@ start_shell_sock_daemon_exec(Config) -> {ok, _Pid} = ssh:daemon(Ss, [{system_dir, SysDir}, {user_dir, UserDir}, {password, "morot"}, - {exec, fun ssh_exec/1}]) + {exec, fun ssh_exec_echo/1}]) end), {ok,Sc} = gen_tcp:accept(Sl), {ok,ConnectionRef} = ssh:connect(Sc, [{silently_accept_hosts, true}, @@ -719,7 +770,7 @@ start_shell_sock_daemon_exec(Config) -> "testing", infinity), receive - {ssh_cm, ConnectionRef, {data, _ChannelId, 0, <<"testing\r\n">>}} -> + {ssh_cm, ConnectionRef, {data, _ChannelId, 0, <<"echo testing\r\n">>}} -> ok after 5000 -> ct:fail("Exec Timeout") @@ -830,7 +881,7 @@ stop_listener(Config) when is_list(Config) -> {Pid0, Host, Port} = ssh_test_lib:daemon([{system_dir, SysDir}, {user_dir, UserDir}, {password, "morot"}, - {exec, fun ssh_exec/1}]), + {exec, fun ssh_exec_echo/1}]), ConnectionRef0 = ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true}, {user, "foo"}, @@ -850,7 +901,7 @@ stop_listener(Config) when is_list(Config) -> success = ssh_connection:exec(ConnectionRef0, ChannelId0, "testing", infinity), receive - {ssh_cm, ConnectionRef0, {data, ChannelId0, 0, <<"testing\r\n">>}} -> + {ssh_cm, ConnectionRef0, {data, ChannelId0, 0, <<"echo testing\r\n">>}} -> ok after 5000 -> ct:fail("Exec Timeout") @@ -859,7 +910,7 @@ stop_listener(Config) when is_list(Config) -> case ssh_test_lib:daemon(Port, [{system_dir, SysDir}, {user_dir, UserDir}, {password, "potatis"}, - {exec, fun ssh_exec/1}]) of + {exec, fun ssh_exec_echo/1}]) of {Pid1, Host, Port} -> ConnectionRef1 = ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true}, {user, "foo"}, @@ -1070,7 +1121,22 @@ start_our_shell(_User, _Peer) -> %% Don't actually loop, just exit end). -ssh_exec(Cmd) -> + +ssh_exec_echo(Cmd) -> spawn(fun() -> - io:format(Cmd ++ "\n") + io:format("echo "++Cmd ++ "\n") end). + +ssh_exec_echo(Cmd, User) -> + spawn(fun() -> + io:format(io_lib:format("echo ~s ~s\n",[User,Cmd])) + end). +ssh_exec_echo(Cmd, User, _PeerAddr) -> + ssh_exec_echo(Cmd,User). + +ssh_exec_direct_echo(Cmd) -> {ok, io_lib:format("echo ~s~n",[Cmd])}. +ssh_exec_direct_echo(Cmd, User) -> {ok, io_lib:format("echo ~s ~s",[User,Cmd])}. +ssh_exec_direct_echo(Cmd, User, _PeerAddr) -> ssh_exec_direct_echo(Cmd,User). + +ssh_exec_direct_echo_error_return(_Cmd) -> {error, {bad}}. +ssh_exec_direct_echo_error_return_type(_Cmd) -> very_bad. diff --git a/lib/ssh/test/ssh_dbg_SUITE.erl b/lib/ssh/test/ssh_dbg_SUITE.erl new file mode 100644 index 0000000000..ab7918fa90 --- /dev/null +++ b/lib/ssh/test/ssh_dbg_SUITE.erl @@ -0,0 +1,465 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2018-2018. All Rights Reserved. +%% +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% + +%% + +-module(ssh_dbg_SUITE). + +-include_lib("common_test/include/ct.hrl"). +-include_lib("ssh/src/ssh.hrl"). +-include("ssh_test_lib.hrl"). + +%% Note: This directive should only be used in test suites. +-compile(export_all). + +%%-------------------------------------------------------------------- +%% Common Test interface functions ----------------------------------- +%%-------------------------------------------------------------------- + +suite() -> + [{ct_hooks,[ts_install_cth]}, + {timetrap,{seconds,60}}]. + +all() -> + [{group, dbg}, + {group, circ_buf} + ]. + +groups() -> + [{dbg, [], [dbg_basic, + dbg_alg_terminate, + dbg_ssh_messages, + dbg_connections, + dbg_channels]}, + {circ_buf, [], [cb_basic, + cb_print, + cb_macros_print + ]} + ]. + +%%-------------------------------------------------------------------- +init_per_suite(Config) -> + ?CHECK_CRYPTO(begin + ssh:start(), + Config + end). + +end_per_suite(_Config) -> + ssh:stop(). + +%%-------------------------------------------------------------------- +init_per_testcase(_TC, Config) -> + Config. + +end_per_testcase(_TC, Config) -> + ssh_dbg:stop(), + Config. + +%%-------------------------------------------------------------------- +-define(USR, "foo"). +-define(PWD, "bar"). + +-define(DBG_RECEIVE(ExpectPfx, Ref, C, Pid), + receive + {Ref, [_, C, ExpectPfx++_]} -> + ok + + after 5000 -> + ssh_dbg:stop(), + ssh:stop_daemon(Pid), + ct:fail("No '~s' debug message",[ExpectPfx]) + end + ). +%%-------------------------------------------------------------------- +%% Test Cases -------------------------------------------------------- +%%-------------------------------------------------------------------- + +dbg_basic(_Config) -> + L0 = ssh_dbg:start(), + true = is_pid(whereis(ssh_dbg)), + true = is_list(L0), + + {ok,L0} = ssh_dbg:on(), + {ok,L0} = ssh_dbg:on(), + + L1 = [hd(L0)], + {ok,L1} = ssh_dbg:off(tl(L0)), + + {ok,L1} = ssh_dbg:go_on(), + + {ok,[]} = ssh_dbg:off(), + {ok,[]} = ssh_dbg:off(), + + ok = ssh_dbg:stop(), + undefined = whereis(ssh_dbg). + + +%%-------------------------------------------------------------------- +dbg_alg_terminate(Config) -> + SystemDir = proplists:get_value(data_dir, Config), + UserDir = proplists:get_value(priv_dir, Config), + + Ref = ssh_dbg_start(), + {ok,[alg,connections,terminate]} = ssh_dbg:on([alg,terminate,connections]), + {ok,[alg,terminate]} = ssh_dbg:off(connections), % just testing that terminate is not canceled + + Parent = self(), + {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir}, + {user_dir, UserDir}, + {user_passwords, [{?USR,?PWD}]}, + {connectfun, fun(_,_,_) -> + Parent ! {daemon_c,Ref,self()} + end}, + {failfun, fun ssh_test_lib:failfun/2}]), + C = ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true}, + {user_dir, UserDir}, + {user,?USR}, + {password,?PWD}, + {user_interaction, false}]), + + %% Daemon connection ref (D): + D = receive + {daemon_c,Ref,D0} -> D0 + end, + ct:log("~p:~p~nC = ~p, D=~p",[?MODULE,?LINE, C, D]), + + ?DBG_RECEIVE("Negotiated algorithms:", Ref, C, Pid), + ?DBG_RECEIVE("Negotiated algorithms:", Ref, D, Pid), + + ssh:close(C), + ?DBG_RECEIVE("Connection Terminating:", Ref, C, Pid), + ?DBG_RECEIVE("Connection Terminating:", Ref, D, Pid), + + stop_and_fail_if_unhandled_dbg_msgs(Ref, [C,D], Pid). + +%%-------------------------------------------------------------------- +dbg_connections(Config) -> + SystemDir = proplists:get_value(data_dir, Config), + UserDir = proplists:get_value(priv_dir, Config), + + Ref = ssh_dbg_start(), + {ok,[connections,terminate]} = ssh_dbg:on([connections, terminate]), + {ok,[connections]} = ssh_dbg:off(terminate), % Just testing that terminate doesn't cancel connections + + Parent = self(), + {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir}, + {user_dir, UserDir}, + {user_passwords, [{?USR,?PWD}]}, + {connectfun, fun(_,_,_) -> + Parent ! {daemon_c,Ref,self()} + end}, + {failfun, fun ssh_test_lib:failfun/2}]), + + ?DBG_RECEIVE("Starting LISTENER on ", Ref, _, Pid), + + C = ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true}, + {user_dir, UserDir}, + {user,?USR}, + {password,?PWD}, + {user_interaction, false}]), + + %% Daemon connection ref (D): + D = receive + {daemon_c,Ref,D0} -> D0 + end, + ct:log("~p:~p~nC = ~p, D=~p",[?MODULE,?LINE, C, D]), + + ?DBG_RECEIVE("Starting server connection:", Ref, D, Pid), + ?DBG_RECEIVE("Starting client connection:", Ref, C, Pid), + + ssh:close(C), + ?DBG_RECEIVE("Connection Terminating:", Ref, C, Pid), + ?DBG_RECEIVE("Connection Terminating:", Ref, D, Pid), + + stop_and_fail_if_unhandled_dbg_msgs(Ref, [C,D], Pid). + +%%-------------------------------------------------------------------- +dbg_ssh_messages(Config) -> + SystemDir = proplists:get_value(data_dir, Config), + UserDir = proplists:get_value(priv_dir, Config), + + Parent = self(), + Ref = make_ref(), + {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir}, + {user_dir, UserDir}, + {user_passwords, [{?USR,?PWD}]}, + {connectfun, fun(_,_,_) -> + Parent ! {daemon_c,Ref,self()} + end}, + {failfun, fun ssh_test_lib:failfun/2}]), + + ssh_dbg_start(Ref), + {ok,[ssh_messages]} = ssh_dbg:on([ssh_messages]), + + C = ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true}, + {user_dir, UserDir}, + {user,?USR}, + {password,?PWD}, + {user_interaction, false}]), + + %% Daemon connection ref (D): + D = receive + {daemon_c,Ref,D0} -> D0 + end, + ct:log("~p:~p~nC = ~p, D=~p",[?MODULE,?LINE, C, D]), + + ?DBG_RECEIVE("Going to send hello message:", Ref, C, Pid), + ?DBG_RECEIVE("Received hello message:", Ref, D, Pid), + + ?DBG_RECEIVE("Going to send hello message:", Ref, D, Pid), + ?DBG_RECEIVE("Received hello message:", Ref, C, Pid), + + ?DBG_RECEIVE("Going to send SSH_MSG_KEXINIT:", Ref, C, Pid), + ?DBG_RECEIVE("Received SSH_MSG_KEXINIT:", Ref, D, Pid), + + ?DBG_RECEIVE("Going to send SSH_MSG_KEXINIT:", Ref, D, Pid), + ?DBG_RECEIVE("Received SSH_MSG_KEXINIT:", Ref, C, Pid), + + case atom_to_list( (ssh_connection_handler:alg(C))#alg.kex ) of + "ecdh-"++_ -> + ?DBG_RECEIVE("Going to send SSH_MSG_KEX_ECDH_INIT:", Ref, C, Pid), + ?DBG_RECEIVE("Received SSH_MSG_KEX_ECDH_INIT:", Ref, D, Pid), + ?DBG_RECEIVE("Going to send SSH_MSG_KEX_ECDH_REPLY:", Ref, D, Pid), + ?DBG_RECEIVE("Received SSH_MSG_KEX_ECDH_REPLY:", Ref, C, Pid); + + "diffie-hellman-group-exchange-"++_ -> + ?DBG_RECEIVE("Going to send SSH_MSG_KEX_DH_GEX_REQUEST:", Ref, C, Pid), + ?DBG_RECEIVE("Received SSH_MSG_KEX_DH_GEX_REQUEST:", Ref, D, Pid), + ?DBG_RECEIVE("Going to send SSH_MSG_KEX_DH_GEX_GROUP:", Ref, D, Pid), + ?DBG_RECEIVE("Received SSH_MSG_KEX_DH_GEX_GROUP:", Ref, C, Pid), + ?DBG_RECEIVE("Going to send SSH_MSG_KEX_DH_GEX_INIT:", Ref, C, Pid), + ?DBG_RECEIVE("Received SSH_MSG_KEX_DH_GEX_INIT:", Ref, D, Pid), + ?DBG_RECEIVE("Going to send SSH_MSG_KEX_DH_GEX_REPLY:", Ref, D, Pid), + ?DBG_RECEIVE("Received SSH_MSG_KEX_DH_GEX_REPLY:", Ref, C, Pid); + + "diffie-hellman-group"++_ -> + ?DBG_RECEIVE("Going to send SSH_MSG_KEXDH_INIT:", Ref, C, Pid), + ?DBG_RECEIVE("Received SSH_MSG_KEXDH_INIT:", Ref, D, Pid), + ?DBG_RECEIVE("Going to send SSH_MSG_KEXDH_REPLY:", Ref, D, Pid), + ?DBG_RECEIVE("Received SSH_MSG_KEXDH_REPLY:", Ref, C, Pid) + end, + + + ?DBG_RECEIVE("Going to send SSH_MSG_NEWKEYS:", Ref, C, Pid), + ?DBG_RECEIVE("Received SSH_MSG_NEWKEYS:", Ref, D, Pid), + + ?DBG_RECEIVE("Going to send SSH_MSG_NEWKEYS:", Ref, D, Pid), + ?DBG_RECEIVE("Received SSH_MSG_NEWKEYS:", Ref, C, Pid), + + ?DBG_RECEIVE("Going to send SSH_MSG_SERVICE_REQUEST:", Ref, C, Pid), + ?DBG_RECEIVE("Received SSH_MSG_SERVICE_REQUEST:", Ref, D, Pid), + + ?DBG_RECEIVE("Going to send SSH_MSG_SERVICE_ACCEPT:", Ref, D, Pid), + ?DBG_RECEIVE("Received SSH_MSG_SERVICE_ACCEPT:", Ref, C, Pid), + + ?DBG_RECEIVE("Going to send SSH_MSG_USERAUTH_REQUEST:", Ref, C, Pid), + ?DBG_RECEIVE("Received SSH_MSG_USERAUTH_REQUEST:", Ref, D, Pid), + + ?DBG_RECEIVE("Going to send SSH_MSG_USERAUTH_FAILURE:", Ref, D, Pid), + ?DBG_RECEIVE("Received SSH_MSG_USERAUTH_FAILURE:", Ref, C, Pid), + + ?DBG_RECEIVE("Going to send SSH_MSG_USERAUTH_REQUEST:", Ref, C, Pid), + ?DBG_RECEIVE("Received SSH_MSG_USERAUTH_REQUEST:", Ref, D, Pid), + + ?DBG_RECEIVE("Going to send SSH_MSG_USERAUTH_SUCCESS:", Ref, D, Pid), + ?DBG_RECEIVE("Received SSH_MSG_USERAUTH_SUCCESS:", Ref, C, Pid), + + + UnexpectedMsgs = + dbg_SKIP(Ref, + [S_R ++ P ++ ":" || P <- ["SSH_MSG_USERAUTH_REQUEST", + "SSH_MSG_USERAUTH_INFO_REQUEST", + "SSH_MSG_USERAUTH_INFO_RESPONSE", + "SSH_MSG_USERAUTH_FAILURE", + "SSH_MSG_EXT_INFO" + ], + S_R <- ["Going to send ", + "Received " + ] + ]), + + ssh:close(C), + stop_and_fail_if_unhandled_dbg_msgs(UnexpectedMsgs, Ref, [C,D], Pid). + +%%-------------------------------------------------------------------- +dbg_channels(Config) -> + SystemDir = proplists:get_value(data_dir, Config), + UserDir = proplists:get_value(priv_dir, Config), + + Ref = ssh_dbg_start(), + {ok,[channels,connections]} = ssh_dbg:on([connections, channels]), + + Parent = self(), + TimeoutShell = + fun() -> + io:format("TimeoutShell started!~n",[]), + timer:sleep(1000), + Parent ! {daemon_channel,Ref,self()}, + ct:log("~p TIMEOUT!",[self()]) + end, + {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir}, + {user_dir, UserDir}, + {user_passwords, [{?USR,?PWD}]}, + {connectfun, fun(_,_,_) -> + Parent ! {daemon_c,Ref,self()} + end}, + {shell, fun(_User) -> + spawn(TimeoutShell) + end + }, + {failfun, fun ssh_test_lib:failfun/2}]), + + ?DBG_RECEIVE("Starting LISTENER on ", Ref, _, Pid), + + C = ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true}, + {user_dir, UserDir}, + {user,?USR}, + {password,?PWD}, + {user_interaction, false}]), + {ok, Ch0} = ssh_connection:session_channel(C, infinity), + ok = ssh_connection:shell(C, Ch0), + + %% Daemon connection ref (D): + D = receive {daemon_c,Ref,D0} -> D0 end, + + %% Daemon channel (Dch): + Dch = receive {daemon_channel,Ref,Dch0} -> Dch0 end, + ct:log("~p:~p~nC = ~p, D=~p, Dch=~p~n~s",[?MODULE,?LINE, C, D, Dch, ssh_info:string()]), + + ?DBG_RECEIVE("Starting server connection:", Ref, D, Pid), + ?DBG_RECEIVE("Starting client connection:", Ref, C, Pid), + ?DBG_RECEIVE("Server Channel Starting:", Ref, _, Pid), + ?DBG_RECEIVE("Server Channel Terminating:", Ref, _, Pid), + + stop_and_fail_if_unhandled_dbg_msgs(Ref, [C,D], Pid). + +%%-------------------------------------------------------------------- +cb_basic(_Config) -> + %% Check that the circular buffer is disabled at start: + [] = ssh_dbg:cbuf_list(), + disabled = ssh_dbg:cbuf_in(anything), + [] = ssh_dbg:cbuf_list(), + %% Start it and enter three values, first is duplicated; + ok = ssh_dbg:cbuf_start(3), + ok = ssh_dbg:cbuf_in(v1), + ok = ssh_dbg:cbuf_in(v1), + ok = ssh_dbg:cbuf_in(v2), + ok = ssh_dbg:cbuf_in(v3), + [{v3,_,1}, {v2,_,1}, {v1,_,2}] = ssh_dbg:cbuf_list(), + %% Check that a fourth value erase the first entered: + ok = ssh_dbg:cbuf_in(v4), + [{v4,_,1}, {v3,_,1}, {v2,_,1}] = ssh_dbg:cbuf_list(), + %% Check that entering a value that is in the tail but not in the head is treated as a new value: + ok = ssh_dbg:cbuf_in(v2), + [{v2,_,1}, {v4,_,1}, {v3,_,1}] = ssh_dbg:cbuf_list(), + %% Stop and check that the buffer is returned: + [{v2,_,1}, {v4,_,1}, {v3,_,1}] = ssh_dbg:cbuf_stop_clear(), + %% Stopping a stopped buffer returns empty: + [] = ssh_dbg:cbuf_stop_clear(), + %% Check that a value can't be entered in a stopped buffer: + disabled = ssh_dbg:cbuf_in(v2). + +%%-------------------------------------------------------------------- +cb_print(_Config) -> + ssh_dbg:cbuf_start(), + [begin + ssh_dbg:cbuf_in(V), + ct:log("Enter ~p",[V]) + end || V <- lists:seq(1,10)], + ct:log("~s",[ssh_dbg:fmt_cbuf_items()]), + ssh_dbg:cbuf_stop_clear(). + +%%-------------------------------------------------------------------- +cb_macros_print(_Config) -> + ssh_dbg:cbuf_start(), + [begin + V = {test,V0}, + ?CIRC_BUF_IN(V), + ct:log("Enter ~p",[V]) + end || V0 <- lists:seq(1,5)], + ct:log("~s",[ssh_dbg:fmt_cbuf_items()]), + ssh_dbg:cbuf_stop_clear(). + +%%-------------------------------------------------------------------- +%%-------------------------------------------------------------------- +%%-------------------------------------------------------------------- + +ssh_dbg_start() -> + ssh_dbg_start(make_ref()). + +ssh_dbg_start(Ref) -> + Parent = self(), + [_|_] = ssh_dbg:start(fun(_F,A) -> + Parent ! {Ref,A} + end), + Ref. + +%%-------------------------------------------------------------------- +queued_msgs(Ref, Conns) -> + queued_msgs(Ref, Conns, []). + +queued_msgs(Ref, Conns, Acc) -> + receive + {Ref, [_, C, _]=Msg} -> + case is_list(Conns) andalso lists:member(C, Conns) of + true -> + queued_msgs(Ref, [Msg|Acc]); + false -> + queued_msgs(Ref, Conns, Acc) + end + after 0 -> + lists:reverse(Acc) + end. + +%%-------------------------------------------------------------------- +stop_and_fail_if_unhandled_dbg_msgs(Ref, Conns, DaemonPid) -> + stop_and_fail_if_unhandled_dbg_msgs(queued_msgs(Ref,Conns), Ref, Conns, DaemonPid). + +stop_and_fail_if_unhandled_dbg_msgs(Msgs, _Ref, _Conns, DaemonPid) -> + ssh:stop_daemon(DaemonPid), + case Msgs of + [] -> + ok; + _ -> + ct:log("Unexpected messages:~n~p",[Msgs]), + ct:fail("Unexpected messages") + end. + +%%-------------------------------------------------------------------- +dbg_SKIP(Ref, Prefixes) -> + dbg_SKIP(Ref, Prefixes, []). + +dbg_SKIP(Ref, Prefixes, UnexpectedAcc) -> + receive + {Ref, [_, _C, Msg]=M} -> + case lists:any( + fun(Pfx) -> + lists:prefix(Pfx, Msg) + end, Prefixes) of + true -> + ct:log("Skip:~n~p", [M]), + dbg_SKIP(Ref, Prefixes, UnexpectedAcc); + false -> + dbg_SKIP(Ref, Prefixes, [Msg|UnexpectedAcc]) + end + after 0 -> + lists:reverse(UnexpectedAcc) + end. + diff --git a/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_dsa_key b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_dsa_key new file mode 100644 index 0000000000..51ab6fbd88 --- /dev/null +++ b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_dsa_key @@ -0,0 +1,13 @@ +-----BEGIN DSA PRIVATE KEY----- +MIIBuwIBAAKBgQCClaHzE2ul0gKSUxah5W0W8UiJLy4hXngKEqpaUq9SSdVdY2LK +wVfKH1gt5iuaf1FfzOhsIC9G/GLnjYttXZc92cv/Gfe3gR+s0ni2++MX+T++mE/Q +diltXv/Hp27PybS67SmiFW7I+RWnT2OKlMPtw2oUuKeztCe5UWjaj/y5FQIVAPLA +l9RpiU30Z87NRAHY3NTRaqtrAoGANMRxw8UfdtNVR0CrQj3AgPaXOGE4d+G4Gp4X +skvnCHycSVAjtYxebUkzUzt5Q6f/IabuLUdge3gXrc8BetvrcKbp+XZgM0/Vj2CF +Ymmy3in6kzGZq7Fw1sZaku6AOU8vLa5woBT2vAcHLLT1bLAzj7viL048T6MfjrOP +ef8nHvACgYBhDWFQJ1mf99sg92LalVq1dHLmVXb3PTJDfCO/Gz5NFmj9EZbAtdah +/XcF3DeRF+eEoz48wQF/ExVxSMIhLdL+o+ElpVhlM7Yii+T7dPhkQfEul6zZXu+U +ykSTXYUbtsfTNRFQGBW2/GfnEc0mnIxfn9v10NEWMzlq5z9wT9P0CgIVAN4wtL5W +Lv62jKcdskxNyz2NQoBx +-----END DSA PRIVATE KEY----- + diff --git a/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_dsa_key.pub b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_dsa_key.pub new file mode 100644 index 0000000000..4dbb1305b0 --- /dev/null +++ b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_dsa_key.pub @@ -0,0 +1,11 @@ +---- BEGIN SSH2 PUBLIC KEY ---- +AAAAB3NzaC1kc3MAAACBAIKVofMTa6XSApJTFqHlbRbxSIkvLiFeeAoSqlpSr1JJ1V1j +YsrBV8ofWC3mK5p/UV/M6GwgL0b8YueNi21dlz3Zy/8Z97eBH6zSeLb74xf5P76YT9B2 +KW1e/8enbs/JtLrtKaIVbsj5FadPY4qUw+3DahS4p7O0J7lRaNqP/LkVAAAAFQDywJfU +aYlN9GfOzUQB2NzU0WqrawAAAIA0xHHDxR9201VHQKtCPcCA9pc4YTh34bganheyS+cI +fJxJUCO1jF5tSTNTO3lDp/8hpu4tR2B7eBetzwF62+twpun5dmAzT9WPYIViabLeKfqT +MZmrsXDWxlqS7oA5Ty8trnCgFPa8BwcstPVssDOPu+IvTjxPox+Os495/yce8AAAAIBh +DWFQJ1mf99sg92LalVq1dHLmVXb3PTJDfCO/Gz5NFmj9EZbAtdah/XcF3DeRF+eEoz48 +wQF/ExVxSMIhLdL+o+ElpVhlM7Yii+T7dPhkQfEul6zZXu+UykSTXYUbtsfTNRFQGBW2 +/GfnEc0mnIxfn9v10NEWMzlq5z9wT9P0Cg== +---- END SSH2 PUBLIC KEY ---- diff --git a/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key256 b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key256 new file mode 100644 index 0000000000..2979ea88ed --- /dev/null +++ b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key256 @@ -0,0 +1,5 @@ +-----BEGIN EC PRIVATE KEY----- +MHcCAQEEIMe4MDoit0t8RzSVPwkCBemQ9fhXL+xnTSAWISw8HNCioAoGCCqGSM49 +AwEHoUQDQgAEo2q7U3P6r0W5WGOLtM78UQtofM9UalEhiZeDdiyylsR/RR17Op0s +VPGSADLmzzgcucLEKy17j2S+oz42VUJy5A== +-----END EC PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key256.pub b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key256.pub new file mode 100644 index 0000000000..85dc419345 --- /dev/null +++ b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key256.pub @@ -0,0 +1 @@ +ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBKNqu1Nz+q9FuVhji7TO/FELaHzPVGpRIYmXg3YsspbEf0UdezqdLFTxkgAy5s84HLnCxCste49kvqM+NlVCcuQ= uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key384 b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key384 new file mode 100644 index 0000000000..fb1a862ded --- /dev/null +++ b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key384 @@ -0,0 +1,6 @@ +-----BEGIN EC PRIVATE KEY----- +MIGkAgEBBDArxbDfh3p1okrD9wQw6jJ4d4DdlBPD5GqXE8bIeRJiK41Sh40LgvPw +mkqEDSXK++CgBwYFK4EEACKhZANiAAScl43Ih2lWTDKrSox5ve5uiTXil4smsup3 +CfS1XPjKxgBAmlfBim8izbdrT0BFdQzz2joduNMtpt61wO4rGs6jm0UP7Kim9PC7 +Hneb/99fIYopdMH5NMnk60zGO1uZ2vc= +-----END EC PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key384.pub b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key384.pub new file mode 100644 index 0000000000..428d5fb7d7 --- /dev/null +++ b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key384.pub @@ -0,0 +1 @@ +ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBJyXjciHaVZMMqtKjHm97m6JNeKXiyay6ncJ9LVc+MrGAECaV8GKbyLNt2tPQEV1DPPaOh240y2m3rXA7isazqObRQ/sqKb08Lsed5v/318hiil0wfk0yeTrTMY7W5na9w== uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key521 b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key521 new file mode 100644 index 0000000000..3e51ec2ecd --- /dev/null +++ b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key521 @@ -0,0 +1,7 @@ +-----BEGIN EC PRIVATE KEY----- +MIHcAgEBBEIB8O1BFkl2HQjQLRLonEZ97da/h39DMa9/0/hvPZWAI8gUPEQcHxRx +U7b09p3Zh+EBbMFq8+1ae9ds+ZTxE4WFSvKgBwYFK4EEACOhgYkDgYYABAAlWVjq +Bzg7Wt4gE6UNb1lRE2cnlmH2L/A5uo6qZRx5lPnSKOxEhxSb/Oay1+9d6KRdrh6/ +vlhd9SHDBhLcAPDvWgBnJIEj92Q3pXX4JtoitL0yl+SvvU+vUh966mzHShHzj8p5 +ccOgPkPNoA70yrpGzkIhPezpZOQdCaOXj/jFqNCTDg== +-----END EC PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key521.pub b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key521.pub new file mode 100644 index 0000000000..017a29f4da --- /dev/null +++ b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_ecdsa_key521.pub @@ -0,0 +1 @@ +ecdsa-sha2-nistp521 AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBAAlWVjqBzg7Wt4gE6UNb1lRE2cnlmH2L/A5uo6qZRx5lPnSKOxEhxSb/Oay1+9d6KRdrh6/vlhd9SHDBhLcAPDvWgBnJIEj92Q3pXX4JtoitL0yl+SvvU+vUh966mzHShHzj8p5ccOgPkPNoA70yrpGzkIhPezpZOQdCaOXj/jFqNCTDg== uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_rsa_key b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_rsa_key new file mode 100644 index 0000000000..79968bdd7d --- /dev/null +++ b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_rsa_key @@ -0,0 +1,16 @@ +-----BEGIN RSA PRIVATE KEY----- +MIICXQIBAAKBgQDCZX+4FBDwZIh9y/Uxee1VJnEXlowpz2yDKwj8semM4q843337 +zbNfxHmladB1lpz2NqyxI175xMIJuDxogyZdsOxGnFAzAnthR4dqL/RWRWzjaxSB +6IAO9SPYVVlrpZ+1hsjLW79fwXK/yc8VdhRuWTeQiRgYY2ek8+OKbOqz4QIDAQAB +AoGANmvJzJO5hkLuvyDZHKfAnGTtpifcR1wtSa9DjdKUyn8vhKF0mIimnbnYQEmW +NUUb3gXCZLi9PvkpRSVRrASDOZwcjoU/Kvww163vBUVb2cOZfFhyn6o2Sk88Tt++ +udH3hdjpf9i7jTtUkUe+QYPsia+wgvvrmn4QrahLAH86+kECQQDx5gFeXTME3cnW +WMpFz3PPumduzjqgqMMWEccX4FtQkMX/gyGa5UC7OHFyh0N/gSWvPbRHa8A6YgIt +n8DO+fh5AkEAzbqX4DOn8NY6xJIi42q7l/2jIA0RkB6P7YugW5NblhqBZ0XDnpA5 +sMt+rz+K07u9XZtxgh1xi7mNfwY6lEAMqQJBAJBEauCKmRj35Z6OyeQku59SPsnY ++SJEREVvSNw2lH9SOKQQ4wPsYlTGbvKtNVZgAcen91L5MmYfeckYE/fdIZECQQCt +64zxsTnM1I8iFxj/gP/OYlJBikrKt8udWmjaghzvLMEw+T2DExJyb9ZNeT53+UMB +m6O+B/4xzU/djvp+0hbhAkAemIt+rA5kTmYlFndhpvzkSSM8a2EXsO4XIPgGWCTT +tQKS/tTly0ADMjN/TVy11+9d6zcqadNVuHXHGtR4W0GR +-----END RSA PRIVATE KEY----- + diff --git a/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_rsa_key.pub b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_rsa_key.pub new file mode 100644 index 0000000000..75d2025c71 --- /dev/null +++ b/lib/ssh/test/ssh_dbg_SUITE_data/ssh_host_rsa_key.pub @@ -0,0 +1,5 @@ +---- BEGIN SSH2 PUBLIC KEY ---- +AAAAB3NzaC1yc2EAAAADAQABAAAAgQDCZX+4FBDwZIh9y/Uxee1VJnEXlowpz2yDKwj8 +semM4q843337zbNfxHmladB1lpz2NqyxI175xMIJuDxogyZdsOxGnFAzAnthR4dqL/RW +RWzjaxSB6IAO9SPYVVlrpZ+1hsjLW79fwXK/yc8VdhRuWTeQiRgYY2ek8+OKbOqz4Q== +---- END SSH2 PUBLIC KEY ---- diff --git a/lib/ssh/test/ssh_echo_server.erl b/lib/ssh/test/ssh_echo_server.erl index 5387d21efd..e039439f87 100644 --- a/lib/ssh/test/ssh_echo_server.erl +++ b/lib/ssh/test/ssh_echo_server.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2005-2016. All Rights Reserved. +%% Copyright Ericsson AB 2005-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -22,7 +22,7 @@ %%% Description: Example ssh server -module(ssh_echo_server). --behaviour(ssh_daemon_channel). +-behaviour(ssh_server_channel). -record(state, { n, id, diff --git a/lib/ssh/test/ssh_engine_SUITE.erl b/lib/ssh/test/ssh_engine_SUITE.erl index c131a70973..3adb23acdb 100644 --- a/lib/ssh/test/ssh_engine_SUITE.erl +++ b/lib/ssh/test/ssh_engine_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -126,10 +126,17 @@ simple_connect(Config) -> load_engine() -> case crypto:get_test_engine() of {ok, Engine} -> - try crypto:engine_load(<<"dynamic">>, + try + %% The test engine has it's own fake rsa sign/verify that + %% you don't want to use, so exclude it from methods to load: + Methods = + crypto:engine_get_all_methods() -- [engine_method_rsa], + crypto:engine_load(<<"dynamic">>, [{<<"SO_PATH">>, Engine}, <<"LOAD">>], - []) + [], + Methods + ) catch error:notsup -> {error, notsup} diff --git a/lib/ssh/test/ssh_options_SUITE.erl b/lib/ssh/test/ssh_options_SUITE.erl index 12a85c40aa..60d0da2a39 100644 --- a/lib/ssh/test/ssh_options_SUITE.erl +++ b/lib/ssh/test/ssh_options_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -49,7 +49,7 @@ server_userpassword_option/1, server_pwdfun_option/1, server_pwdfun_4_option/1, - server_pwdfun_4_option_repeat/1, + server_keyboard_interactive/1, ssh_connect_arg4_timeout/1, ssh_connect_negtimeout_parallel/1, ssh_connect_negtimeout_sequential/1, @@ -99,7 +99,7 @@ all() -> server_userpassword_option, server_pwdfun_option, server_pwdfun_4_option, - server_pwdfun_4_option_repeat, + server_keyboard_interactive, {group, dir_options}, ssh_connect_timeout, ssh_connect_arg4_timeout, @@ -381,7 +381,7 @@ server_pwdfun_4_option(Config) -> %%-------------------------------------------------------------------- -server_pwdfun_4_option_repeat(Config) -> +server_keyboard_interactive(Config) -> UserDir = proplists:get_value(user_dir, Config), SysDir = proplists:get_value(data_dir, Config), %% Test that the state works @@ -396,19 +396,28 @@ server_pwdfun_4_option_repeat(Config) -> {pwdfun,PWDFUN}]), %% Try with passwords "incorrect", "Bad again" and finally "bar" - KIFFUN = fun(_,_,_) -> + KIFFUN = fun(_Name, _Instr, _PromptInfos) -> K={k,self()}, - case get(K) of - undefined -> - put(K,1), - ["incorrect"]; - 2 -> - put(K,3), - ["bar"]; - S-> - put(K,S+1), - ["Bad again"] - end + Answer = + case get(K) of + undefined -> + put(K,1), + ["incorrect"]; + 2 -> + put(K,3), + ["bar"]; + S-> + put(K,S+1), + ["Bad again"] + end, + ct:log("keyboard_interact_fun:~n" + " Name = ~p~n" + " Instruction = ~p~n" + " Prompts = ~p~n" + "~nAnswer:~n ~p~n", + [_Name, _Instr, _PromptInfos, Answer]), + + Answer end, ConnectionRef2 = @@ -1227,7 +1236,7 @@ max_sessions(Config, ParallelLogin, Connect0) when is_function(Connect0,2) -> [_|_] = Connections, %% Now try one more than alowed: - ct:log("Info Report might come here...",[]), + ct:pal("Info Report expected here (if not disabled) ...",[]), try Connect(Host,Port) of _ConnectionRef1 -> @@ -1235,8 +1244,7 @@ max_sessions(Config, ParallelLogin, Connect0) when is_function(Connect0,2) -> {fail,"Too many connections accepted"} catch error:{badmatch,{error,"Connection closed"}} -> - %% Step 2 ok: could not set up max_sessions+1 connections - %% This is expected + ct:log("Step 2 ok: could not set up too many connections. Good.",[]), %% Now stop one connection and try to open one more ok = ssh:close(hd(Connections)), try_to_connect(Connect, Host, Port, Pid) @@ -1249,16 +1257,15 @@ max_sessions(Config, ParallelLogin, Connect0) when is_function(Connect0,2) -> try_to_connect(Connect, Host, Port, Pid) -> - {ok,Tref} = timer:send_after(3000, timeout_no_connection), % give the supervisors some time... + {ok,Tref} = timer:send_after(30000, timeout_no_connection), % give the supervisors some time... try_to_connect(Connect, Host, Port, Pid, Tref, 1). % will take max 3300 ms after 11 tries try_to_connect(Connect, Host, Port, Pid, Tref, N) -> try Connect(Host,Port) of _ConnectionRef1 -> - %% Step 3 ok: could set up one more connection after killing one - %% Thats good. timer:cancel(Tref), + ct:log("Step 3 ok: could set up one more connection after killing one. Thats good.",[]), ssh:stop_daemon(Pid), receive % flush. timeout_no_connection -> ok diff --git a/lib/ssh/test/ssh_peername_sockname_server.erl b/lib/ssh/test/ssh_peername_sockname_server.erl index 8731d80f62..1cc53edf6d 100644 --- a/lib/ssh/test/ssh_peername_sockname_server.erl +++ b/lib/ssh/test/ssh_peername_sockname_server.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2016. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -26,7 +26,7 @@ %% ssh connection. --behaviour(ssh_daemon_channel). +-behaviour(ssh_server_channel). -record(state, {}). -export([init/1, handle_msg/2, handle_ssh_msg/2, terminate/2]). diff --git a/lib/ssh/test/ssh_property_test_SUITE.erl b/lib/ssh/test/ssh_property_test_SUITE.erl index 3318b86d39..9aaac898a0 100644 --- a/lib/ssh/test/ssh_property_test_SUITE.erl +++ b/lib/ssh/test/ssh_property_test_SUITE.erl @@ -46,8 +46,9 @@ groups() -> [{messages, [], [decode, decode_encode]}, {client_server, [], [client_server_sequential, - client_server_parallel, - client_server_parallel_multi]} + client_server_parallel + %% client_server_parallel_multi + ]} ]. @@ -62,7 +63,7 @@ end_per_suite(Config) -> %%% if we run proper. init_per_group(client_server, Config) -> case proplists:get_value(property_test_tool,Config) of - eqc -> Config; + proper -> Config; X -> {skip, lists:concat([X," is not supported"])} end; init_per_group(_, Config) -> diff --git a/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_dsa_key b/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_dsa_key new file mode 100644 index 0000000000..51ab6fbd88 --- /dev/null +++ b/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_dsa_key @@ -0,0 +1,13 @@ +-----BEGIN DSA PRIVATE KEY----- +MIIBuwIBAAKBgQCClaHzE2ul0gKSUxah5W0W8UiJLy4hXngKEqpaUq9SSdVdY2LK +wVfKH1gt5iuaf1FfzOhsIC9G/GLnjYttXZc92cv/Gfe3gR+s0ni2++MX+T++mE/Q +diltXv/Hp27PybS67SmiFW7I+RWnT2OKlMPtw2oUuKeztCe5UWjaj/y5FQIVAPLA +l9RpiU30Z87NRAHY3NTRaqtrAoGANMRxw8UfdtNVR0CrQj3AgPaXOGE4d+G4Gp4X +skvnCHycSVAjtYxebUkzUzt5Q6f/IabuLUdge3gXrc8BetvrcKbp+XZgM0/Vj2CF +Ymmy3in6kzGZq7Fw1sZaku6AOU8vLa5woBT2vAcHLLT1bLAzj7viL048T6MfjrOP +ef8nHvACgYBhDWFQJ1mf99sg92LalVq1dHLmVXb3PTJDfCO/Gz5NFmj9EZbAtdah +/XcF3DeRF+eEoz48wQF/ExVxSMIhLdL+o+ElpVhlM7Yii+T7dPhkQfEul6zZXu+U +ykSTXYUbtsfTNRFQGBW2/GfnEc0mnIxfn9v10NEWMzlq5z9wT9P0CgIVAN4wtL5W +Lv62jKcdskxNyz2NQoBx +-----END DSA PRIVATE KEY----- + diff --git a/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_dsa_key.pub b/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_dsa_key.pub new file mode 100644 index 0000000000..4dbb1305b0 --- /dev/null +++ b/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_dsa_key.pub @@ -0,0 +1,11 @@ +---- BEGIN SSH2 PUBLIC KEY ---- +AAAAB3NzaC1kc3MAAACBAIKVofMTa6XSApJTFqHlbRbxSIkvLiFeeAoSqlpSr1JJ1V1j +YsrBV8ofWC3mK5p/UV/M6GwgL0b8YueNi21dlz3Zy/8Z97eBH6zSeLb74xf5P76YT9B2 +KW1e/8enbs/JtLrtKaIVbsj5FadPY4qUw+3DahS4p7O0J7lRaNqP/LkVAAAAFQDywJfU +aYlN9GfOzUQB2NzU0WqrawAAAIA0xHHDxR9201VHQKtCPcCA9pc4YTh34bganheyS+cI +fJxJUCO1jF5tSTNTO3lDp/8hpu4tR2B7eBetzwF62+twpun5dmAzT9WPYIViabLeKfqT +MZmrsXDWxlqS7oA5Ty8trnCgFPa8BwcstPVssDOPu+IvTjxPox+Os495/yce8AAAAIBh +DWFQJ1mf99sg92LalVq1dHLmVXb3PTJDfCO/Gz5NFmj9EZbAtdah/XcF3DeRF+eEoz48 +wQF/ExVxSMIhLdL+o+ElpVhlM7Yii+T7dPhkQfEul6zZXu+UykSTXYUbtsfTNRFQGBW2 +/GfnEc0mnIxfn9v10NEWMzlq5z9wT9P0Cg== +---- END SSH2 PUBLIC KEY ---- diff --git a/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_ecdsa_key b/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_ecdsa_key new file mode 100644 index 0000000000..2979ea88ed --- /dev/null +++ b/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_ecdsa_key @@ -0,0 +1,5 @@ +-----BEGIN EC PRIVATE KEY----- +MHcCAQEEIMe4MDoit0t8RzSVPwkCBemQ9fhXL+xnTSAWISw8HNCioAoGCCqGSM49 +AwEHoUQDQgAEo2q7U3P6r0W5WGOLtM78UQtofM9UalEhiZeDdiyylsR/RR17Op0s +VPGSADLmzzgcucLEKy17j2S+oz42VUJy5A== +-----END EC PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_ecdsa_key.pub b/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_ecdsa_key.pub new file mode 100644 index 0000000000..85dc419345 --- /dev/null +++ b/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_ecdsa_key.pub @@ -0,0 +1 @@ +ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBKNqu1Nz+q9FuVhji7TO/FELaHzPVGpRIYmXg3YsspbEf0UdezqdLFTxkgAy5s84HLnCxCste49kvqM+NlVCcuQ= uabhnil@elxadlj3q32 diff --git a/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_rsa_key b/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_rsa_key new file mode 100644 index 0000000000..79968bdd7d --- /dev/null +++ b/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_rsa_key @@ -0,0 +1,16 @@ +-----BEGIN RSA PRIVATE KEY----- +MIICXQIBAAKBgQDCZX+4FBDwZIh9y/Uxee1VJnEXlowpz2yDKwj8semM4q843337 +zbNfxHmladB1lpz2NqyxI175xMIJuDxogyZdsOxGnFAzAnthR4dqL/RWRWzjaxSB +6IAO9SPYVVlrpZ+1hsjLW79fwXK/yc8VdhRuWTeQiRgYY2ek8+OKbOqz4QIDAQAB +AoGANmvJzJO5hkLuvyDZHKfAnGTtpifcR1wtSa9DjdKUyn8vhKF0mIimnbnYQEmW +NUUb3gXCZLi9PvkpRSVRrASDOZwcjoU/Kvww163vBUVb2cOZfFhyn6o2Sk88Tt++ +udH3hdjpf9i7jTtUkUe+QYPsia+wgvvrmn4QrahLAH86+kECQQDx5gFeXTME3cnW +WMpFz3PPumduzjqgqMMWEccX4FtQkMX/gyGa5UC7OHFyh0N/gSWvPbRHa8A6YgIt +n8DO+fh5AkEAzbqX4DOn8NY6xJIi42q7l/2jIA0RkB6P7YugW5NblhqBZ0XDnpA5 +sMt+rz+K07u9XZtxgh1xi7mNfwY6lEAMqQJBAJBEauCKmRj35Z6OyeQku59SPsnY ++SJEREVvSNw2lH9SOKQQ4wPsYlTGbvKtNVZgAcen91L5MmYfeckYE/fdIZECQQCt +64zxsTnM1I8iFxj/gP/OYlJBikrKt8udWmjaghzvLMEw+T2DExJyb9ZNeT53+UMB +m6O+B/4xzU/djvp+0hbhAkAemIt+rA5kTmYlFndhpvzkSSM8a2EXsO4XIPgGWCTT +tQKS/tTly0ADMjN/TVy11+9d6zcqadNVuHXHGtR4W0GR +-----END RSA PRIVATE KEY----- + diff --git a/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_rsa_key.pub b/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_rsa_key.pub new file mode 100644 index 0000000000..75d2025c71 --- /dev/null +++ b/lib/ssh/test/ssh_property_test_SUITE_data/ssh_host_rsa_key.pub @@ -0,0 +1,5 @@ +---- BEGIN SSH2 PUBLIC KEY ---- +AAAAB3NzaC1yc2EAAAADAQABAAAAgQDCZX+4FBDwZIh9y/Uxee1VJnEXlowpz2yDKwj8 +semM4q843337zbNfxHmladB1lpz2NqyxI175xMIJuDxogyZdsOxGnFAzAnthR4dqL/RW +RWzjaxSB6IAO9SPYVVlrpZ+1hsjLW79fwXK/yc8VdhRuWTeQiRgYY2ek8+OKbOqz4Q== +---- END SSH2 PUBLIC KEY ---- diff --git a/lib/ssh/test/ssh_renegotiate_SUITE.erl b/lib/ssh/test/ssh_renegotiate_SUITE.erl deleted file mode 100644 index 74bbc291b2..0000000000 --- a/lib/ssh/test/ssh_renegotiate_SUITE.erl +++ /dev/null @@ -1,237 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2008-2016. All Rights Reserved. -%% -%% Licensed under the Apache License, Version 2.0 (the "License"); -%% you may not use this file except in compliance with the License. -%% You may obtain a copy of the License at -%% -%% http://www.apache.org/licenses/LICENSE-2.0 -%% -%% Unless required by applicable law or agreed to in writing, software -%% distributed under the License is distributed on an "AS IS" BASIS, -%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -%% See the License for the specific language governing permissions and -%% limitations under the License. -%% -%% %CopyrightEnd% -%% - --module(ssh_renegotiate_SUITE). - --include_lib("common_test/include/ct.hrl"). --include("ssh_test_lib.hrl"). - -%% Note: This directive should only be used in test suites. --compile(export_all). - --define(REKEY_DATA_TMO, 65000). -%%-------------------------------------------------------------------- -%% Common Test interface functions ----------------------------------- -%%-------------------------------------------------------------------- - -suite() -> [{ct_hooks,[ts_install_cth]}, - {timetrap,{seconds,40}}]. - -all() -> [{group,default_algs}, - {group,aes_gcm} - ]. - -groups() -> [{default_algs, [], tests()}, - {aes_gcm, [], tests()} - ]. - -tests() -> [rekey, rekey_limit, renegotiate1, renegotiate2]. - -%%-------------------------------------------------------------------- -init_per_suite(Config) -> - ?CHECK_CRYPTO(Config). - -end_per_suite(_Config) -> - ssh:stop(). - -%%-------------------------------------------------------------------- -init_per_group(aes_gcm, Config) -> - case lists:member({client2server,['[email protected]']}, - ssh_transport:supported_algorithms(cipher)) of - true -> - [{preferred_algorithms, [{cipher,[{client2server,['[email protected]']}, - {server2client,['[email protected]']}]}]} - | Config]; - false -> - {skip, "aes_gcm not supported"} - end; -init_per_group(_, Config) -> - [{preferred_algorithms, ssh:default_algorithms()} | Config]. - - -end_per_group(_, Config) -> - Config. - -%%-------------------------------------------------------------------- -init_per_testcase(_TestCase, Config) -> - ssh:start(), - Config. - -end_per_testcase(_TestCase, _Config) -> - ssh:stop(), - ok. - -%%-------------------------------------------------------------------- -%% Test Cases -------------------------------------------------------- -%%-------------------------------------------------------------------- - -%%% Idle timeout test -rekey() -> [{timetrap,{seconds,90}}]. - -rekey(Config) -> - {Pid, Host, Port} = - ssh_test_lib:std_daemon(Config, - [{rekey_limit, 0}]), - ConnectionRef = - ssh_test_lib:std_connect(Config, Host, Port, - [{rekey_limit, 0}]), - Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), - receive - after ?REKEY_DATA_TMO -> - %%By this time rekeying would have been done - Kex2 = ssh_test_lib:get_kex_init(ConnectionRef), - false = (Kex2 == Kex1), - ssh:close(ConnectionRef), - ssh:stop_daemon(Pid) - end. - -%%-------------------------------------------------------------------- - -%%% Test rekeying by data volume - -rekey_limit() -> [{timetrap,{seconds,400}}]. - -rekey_limit(Config) -> - UserDir = proplists:get_value(priv_dir, Config), - DataFile = filename:join(UserDir, "rekey.data"), - - Algs = proplists:get_value(preferred_algorithms, Config), - {Pid, Host, Port} = ssh_test_lib:std_daemon(Config,[{max_random_length_padding,0}, - {preferred_algorithms,Algs}]), - - ConnectionRef = ssh_test_lib:std_connect(Config, Host, Port, [{rekey_limit, 6000}, - {max_random_length_padding,0}]), - {ok, SftpPid} = ssh_sftp:start_channel(ConnectionRef), - - Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), - - timer:sleep(?REKEY_DATA_TMO), - Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), - - Data = lists:duplicate(159000,1), - ok = ssh_sftp:write_file(SftpPid, DataFile, Data), - - timer:sleep(?REKEY_DATA_TMO), - Kex2 = ssh_test_lib:get_kex_init(ConnectionRef), - - false = (Kex2 == Kex1), - - timer:sleep(?REKEY_DATA_TMO), - Kex2 = ssh_test_lib:get_kex_init(ConnectionRef), - - ok = ssh_sftp:write_file(SftpPid, DataFile, "hi\n"), - - timer:sleep(?REKEY_DATA_TMO), - Kex2 = ssh_test_lib:get_kex_init(ConnectionRef), - - false = (Kex2 == Kex1), - - timer:sleep(?REKEY_DATA_TMO), - Kex2 = ssh_test_lib:get_kex_init(ConnectionRef), - - ssh_sftp:stop_channel(SftpPid), - ssh:close(ConnectionRef), - ssh:stop_daemon(Pid). - -%%-------------------------------------------------------------------- - -%%% Test rekeying with simulataneous send request - -renegotiate1(Config) -> - UserDir = proplists:get_value(priv_dir, Config), - DataFile = filename:join(UserDir, "renegotiate1.data"), - - Algs = proplists:get_value(preferred_algorithms, Config), - {Pid, Host, DPort} = ssh_test_lib:std_daemon(Config,[{max_random_length_padding,0}, - {preferred_algorithms,Algs}]), - - RPort = ssh_test_lib:inet_port(), - {ok,RelayPid} = ssh_relay:start_link({0,0,0,0}, RPort, Host, DPort), - - - ConnectionRef = ssh_test_lib:std_connect(Config, Host, RPort, [{max_random_length_padding,0}]), - {ok, SftpPid} = ssh_sftp:start_channel(ConnectionRef), - - Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), - - {ok, Handle} = ssh_sftp:open(SftpPid, DataFile, [write]), - - ok = ssh_sftp:write(SftpPid, Handle, "hi\n"), - - ssh_relay:hold(RelayPid, rx, 20, 1000), - ssh_connection_handler:renegotiate(ConnectionRef), - spawn(fun() -> ok=ssh_sftp:write(SftpPid, Handle, "another hi\n") end), - - timer:sleep(2000), - - Kex2 = ssh_test_lib:get_kex_init(ConnectionRef), - - false = (Kex2 == Kex1), - - ssh_relay:stop(RelayPid), - ssh_sftp:stop_channel(SftpPid), - ssh:close(ConnectionRef), - ssh:stop_daemon(Pid). - -%%-------------------------------------------------------------------- - -%%% Test rekeying with inflight messages from peer - -renegotiate2(Config) -> - UserDir = proplists:get_value(priv_dir, Config), - DataFile = filename:join(UserDir, "renegotiate2.data"), - - Algs = proplists:get_value(preferred_algorithms, Config), - {Pid, Host, DPort} = ssh_test_lib:std_daemon(Config,[{max_random_length_padding,0}, - {preferred_algorithms,Algs}]), - - RPort = ssh_test_lib:inet_port(), - {ok,RelayPid} = ssh_relay:start_link({0,0,0,0}, RPort, Host, DPort), - - ConnectionRef = ssh_test_lib:std_connect(Config, Host, RPort, [{max_random_length_padding,0}]), - {ok, SftpPid} = ssh_sftp:start_channel(ConnectionRef), - - Kex1 = ssh_test_lib:get_kex_init(ConnectionRef), - - {ok, Handle} = ssh_sftp:open(SftpPid, DataFile, [write]), - - ok = ssh_sftp:write(SftpPid, Handle, "hi\n"), - - ssh_relay:hold(RelayPid, rx, 20, infinity), - spawn(fun() -> ok=ssh_sftp:write(SftpPid, Handle, "another hi\n") end), - %% need a small pause here to ensure ssh_sftp:write is executed - ct:sleep(10), - ssh_connection_handler:renegotiate(ConnectionRef), - ssh_relay:release(RelayPid, rx), - - timer:sleep(2000), - - Kex2 = ssh_test_lib:get_kex_init(ConnectionRef), - - false = (Kex2 == Kex1), - - ssh_relay:stop(RelayPid), - ssh_sftp:stop_channel(SftpPid), - ssh:close(ConnectionRef), - ssh:stop_daemon(Pid). - -%%-------------------------------------------------------------------- -%% Internal functions ------------------------------------------------ -%%-------------------------------------------------------------------- diff --git a/lib/ssh/test/ssh_renegotiate_SUITE_data/id_dsa b/lib/ssh/test/ssh_renegotiate_SUITE_data/id_dsa deleted file mode 100644 index d306f8b26e..0000000000 --- a/lib/ssh/test/ssh_renegotiate_SUITE_data/id_dsa +++ /dev/null @@ -1,13 +0,0 @@ ------BEGIN DSA PRIVATE KEY----- -MIIBvAIBAAKBgQDfi2flSTZZofwT4yQT0NikX/LGNT7UPeB/XEWe/xovEYCElfaQ -APFixXvEgXwoojmZ5kiQRKzLM39wBP0jPERLbnZXfOOD0PDnw0haMh7dD7XKVMod -/EigVgHf/qBdM2M8yz1s/rRF7n1UpLSypziKjkzCm7JoSQ2zbWIPdmBIXwIVAMgP -kpr7Sq3O7sHdb8D601DRjoExAoGAMOQxDfB2Fd8ouz6G96f/UOzRMI/Kdv8kYYKW -JIGY+pRYrLPyYzUeJznwZreOJgrczAX+luHnKFWJ2Dnk5CyeXk67Wsr7pJ/4MBMD -OKeIS0S8qoSBN8+Krp79fgA+yS3IfqbkJLtLu4EBaCX4mKQIX4++k44d4U5lc8pt -+9hlEI8CgYEAznKxx9kyC6bVo7LUYKaGhofRFt0SYFc5PVmT2VUGRs1R6+6DPD+e -uEO6IhFct7JFSRbP9p0JD4Uk+3zlZF+XX6b2PsZkeV8f/02xlNGUSmEzCSiNg1AX -Cy/WusYhul0MncWCHMcOZB5rIvU/aP5EJJtn3xrRaz6u0SThF6AnT34CFQC63czE -ZU8w8Q+H7z0j+a+70x2iAw== ------END DSA PRIVATE KEY----- - diff --git a/lib/ssh/test/ssh_renegotiate_SUITE_data/id_rsa b/lib/ssh/test/ssh_renegotiate_SUITE_data/id_rsa deleted file mode 100644 index 9d7e0dd5fb..0000000000 --- a/lib/ssh/test/ssh_renegotiate_SUITE_data/id_rsa +++ /dev/null @@ -1,15 +0,0 @@ ------BEGIN RSA PRIVATE KEY----- -MIICXAIBAAKBgQD1OET+3O/Bvj/dtjxDTXmj1oiJt4sIph5kGy0RfjoPrZfaS+CU -DhakCmS6t2ivxWFgtpKWaoGMZMJqWj6F6ZsumyFl3FPBtujwY/35cgifrI9Ns4Tl -zR1uuengNBmV+WRQ5cd9F2qS6Z8aDQihzt0r8JUqLcK+VQbrmNzboCCQQwIDAQAB -AoGAPQEyqPTt8JUT7mRXuaacjFXiweAXhp9NEDpyi9eLOjtFe9lElZCrsUOkq47V -TGUeRKEm9qSodfTbKPoqc8YaBJGJPhUaTAcha+7QcDdfHBvIsgxvU7ePVnlpXRp3 -CCUEMPhlnx6xBoTYP+fRU0e3+xJIPVyVCqX1jAdUMkzfRoECQQD6ux7B1QJAIWyK -SGkbDUbBilNmzCFNgIpOP6PA+bwfi5d16diTpra5AX09keQABAo/KaP1PdV8Vg0p -z4P3A7G3AkEA+l+AKG6m0kQTTBMJDqOdVPYwe+5GxunMaqmhokpEbuGsrZBl5Dvd -WpcBjR7jmenrhKZRIuA+Fz5HPo/UQJPl1QJBAKxstDkeED8j/S2XoFhPKAJ+6t39 -sUVICVTIZQeXdmzHJXCcUSkw8+WEhakqw/3SyW0oaK2FSWQJFWJUZ+8eJj8CQEh3 -xeduB5kKnS9CvzdeghZqX6QvVosSdtlUmfUYW/BgH5PpHKTP8wTaeld3XldZTpMJ -dKiMkUw2+XYROVUrubUCQD+Na1LhULlpn4ISEtIEfqpdlUhxDgO15Wg8USmsng+x -ICliVOSQtwaZjm8kwaFt0W7XnpnDxbRs37vIEbIMWak= ------END RSA PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_sup_SUITE.erl b/lib/ssh/test/ssh_sup_SUITE.erl index 1df55834b1..a0e3d809be 100644 --- a/lib/ssh/test/ssh_sup_SUITE.erl +++ b/lib/ssh/test/ssh_sup_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2015-2017. All Rights Reserved. +%% Copyright Ericsson AB 2015-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -201,8 +201,6 @@ killed_acceptor_restarts(Config) -> Port2 = ssh_test_lib:daemon_port(DaemonPid2), true = (Port /= Port2), - ct:log("~s",[lists:flatten(ssh_info:string())]), - {ok,[{AccPid,ListenAddr,Port}]} = acceptor_pid(DaemonPid), {ok,[{AccPid2,ListenAddr,Port2}]} = acceptor_pid(DaemonPid2), @@ -216,23 +214,34 @@ killed_acceptor_restarts(Config) -> {user_dir, UserDir}]), [{client_version,_}] = ssh:connection_info(C1,[client_version]), + ct:log("~s",[lists:flatten(ssh_info:string())]), + %% Make acceptor restart: exit(AccPid, kill), ?wait_match(undefined, process_info(AccPid)), - %% Check it is a new acceptor: + %% Check it is a new acceptor and wait if it is not: ?wait_match({ok,[{AccPid1,ListenAddr,Port}]}, AccPid1=/=AccPid, acceptor_pid(DaemonPid), AccPid1, 500, 30), - AccPid1 =/= AccPid2, + + true = (AccPid1 =/= AccPid2), %% Connect second client and check it is alive: - {ok,C2} = ssh:connect("localhost", Port, [{silently_accept_hosts, true}, - {user_interaction, false}, - {user, ?USER}, - {password, ?PASSWD}, - {user_dir, UserDir}]), + C2 = + case ssh:connect("localhost", Port, [{silently_accept_hosts, true}, + {user_interaction, false}, + {user, ?USER}, + {password, ?PASSWD}, + {user_dir, UserDir}]) of + {ok,_C2} -> + _C2; + _Other -> + ct:log("new connect failed: ~p~n~n~s",[_Other,lists:flatten(ssh_info:string())]), + ct:fail("Re-connect failed!", []) + end, + [{client_version,_}] = ssh:connection_info(C2,[client_version]), ct:log("~s",[lists:flatten(ssh_info:string())]), @@ -247,8 +256,8 @@ killed_acceptor_restarts(Config) -> ok = ssh:stop_daemon(DaemonPid), ?wait_match(undefined, process_info(DaemonPid), 1000, 30), - {error,closed} = ssh:connection_info(C1,[client_version]), - {error,closed} = ssh:connection_info(C2,[client_version]). + ?wait_match({error,closed}, ssh:connection_info(C1,[client_version]), 1000, 5), + ?wait_match({error,closed}, ssh:connection_info(C2,[client_version]), 1000, 5). %%------------------------------------------------------------------------- shell_channel_tree(Config) -> @@ -281,7 +290,7 @@ shell_channel_tree(Config) -> {ok, ChannelId0} = ssh_connection:session_channel(ConnectionRef, infinity), ok = ssh_connection:shell(ConnectionRef,ChannelId0), - ?wait_match([{_, GroupPid,worker,[ssh_channel]}], + ?wait_match([{_, GroupPid,worker,[ssh_server_channel]}], supervisor:which_children(ChannelSup), [GroupPid]), {links,GroupLinks} = erlang:process_info(GroupPid, links), @@ -330,9 +339,9 @@ chk_empty_con_daemon(Daemon) -> ?wait_match([{{server,ssh_connection_sup, _,_}, ConnectionSup, supervisor, [ssh_connection_sup]}, - {{server,ssh_channel_sup,_ ,_}, + {{server,ssh_server_channel_sup,_ ,_}, ChannelSup,supervisor, - [ssh_channel_sup]}], + [ssh_server_channel_sup]}], supervisor:which_children(SubSysSup), [ConnectionSup,ChannelSup]), ?wait_match([{{ssh_acceptor_sup,_,_,_},_,worker,[ssh_acceptor]}], @@ -363,9 +372,9 @@ check_sshd_system_tree(Daemon, Config) -> ?wait_match([{{server,ssh_connection_sup, _,_}, ConnectionSup, supervisor, [ssh_connection_sup]}, - {{server,ssh_channel_sup,_ ,_}, + {{server,ssh_server_channel_sup,_ ,_}, ChannelSup,supervisor, - [ssh_channel_sup]}], + [ssh_server_channel_sup]}], supervisor:which_children(SubSysSup), [ConnectionSup,ChannelSup]), @@ -379,7 +388,7 @@ check_sshd_system_tree(Daemon, Config) -> ssh_sftp:start_channel(Client), - ?wait_match([{_, _,worker,[ssh_channel]}], + ?wait_match([{_, _,worker,[ssh_server_channel]}], supervisor:which_children(ChannelSup)), ssh:close(Client). diff --git a/lib/ssh/test/ssh_test_lib.erl b/lib/ssh/test/ssh_test_lib.erl index 57ae2dbac2..a1a7eebcde 100644 --- a/lib/ssh/test/ssh_test_lib.erl +++ b/lib/ssh/test/ssh_test_lib.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2017. All Rights Reserved. +%% Copyright Ericsson AB 2004-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -408,6 +408,21 @@ ct:log("DataDir ~p:~n ~p~n~nSystDir ~p:~n ~p~n~nUserDir ~p:~n ~p",[DataDir, file setup_ecdsa_known_host(Size, System, UserDir), setup_ecdsa_auth_keys(Size, DataDir, UserDir). +setup_eddsa(Alg, DataDir, UserDir) -> + {IdPriv, IdPub, HostPriv, HostPub} = + case Alg of + ed25519 -> {"id_ed25519", "id_ed25519.pub", "ssh_host_ed25519_key", "ssh_host_ed25519_key.pub"}; + ed448 -> {"id_ed448", "id_ed448.pub", "ssh_host_ed448_key", "ssh_host_ed448_key.pub"} + end, + file:copy(filename:join(DataDir, IdPriv), filename:join(UserDir, IdPriv)), + System = filename:join(UserDir, "system"), + file:make_dir(System), + file:copy(filename:join(DataDir, HostPriv), filename:join(System, HostPriv)), + file:copy(filename:join(DataDir, HostPub), filename:join(System, HostPub)), +ct:log("DataDir ~p:~n ~p~n~nSystDir ~p:~n ~p~n~nUserDir ~p:~n ~p",[DataDir, file:list_dir(DataDir), System, file:list_dir(System), UserDir, file:list_dir(UserDir)]), + setup_eddsa_known_host(HostPub, DataDir, UserDir), + setup_eddsa_auth_keys(IdPriv, DataDir, UserDir). + clean_dsa(UserDir) -> del_dirs(filename:join(UserDir, "system")), file:delete(filename:join(UserDir,"id_dsa")), @@ -487,6 +502,11 @@ setup_ecdsa_known_host(_Size, SystemDir, UserDir) -> [{Key, _}] = public_key:ssh_decode(SshBin, public_key), setup_known_hosts(Key, UserDir). +setup_eddsa_known_host(HostPub, SystemDir, UserDir) -> + {ok, SshBin} = file:read_file(filename:join(SystemDir, HostPub)), + [{Key, _}] = public_key:ssh_decode(SshBin, public_key), + setup_known_hosts(Key, UserDir). + setup_known_hosts(Key, UserDir) -> {ok, Hostname} = inet:gethostname(), {ok, {A, B, C, D}} = inet:getaddr(Hostname, inet), @@ -529,6 +549,11 @@ setup_ecdsa_auth_keys(Size, Dir, UserDir) -> PKey = #'ECPoint'{point = Q}, setup_auth_keys([{ {PKey,Param}, [{comment, "Test"}]}], UserDir). +setup_eddsa_auth_keys(IdPriv, Dir, UserDir) -> + {ok, Pem} = file:read_file(filename:join(Dir, IdPriv)), + {ed_pri, Alg, Pub, _} = public_key:pem_entry_decode(hd(public_key:pem_decode(Pem))), + setup_auth_keys([{{ed_pub,Alg,Pub}, [{comment, "Test"}]}], UserDir). + setup_auth_keys(Keys, Dir) -> AuthKeys = public_key:ssh_encode(Keys, auth_keys), AuthKeysFile = filename:join(Dir, "authorized_keys"), @@ -926,7 +951,7 @@ get_kex_init(Conn, Ref, TRef) -> end; false -> - ct:log("Not in 'connected' state: ~p",[State]), + ct:log("~p:~p Not in 'connected' state: ~p",[?MODULE,?LINE,State]), receive {reneg_timeout,Ref} -> ct:log("S = ~p", [S]), diff --git a/lib/ssh/test/ssh_to_openssh_SUITE.erl b/lib/ssh/test/ssh_to_openssh_SUITE.erl index 9df404d7ed..334281f53b 100644 --- a/lib/ssh/test/ssh_to_openssh_SUITE.erl +++ b/lib/ssh/test/ssh_to_openssh_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2017. All Rights Reserved. +%% Copyright Ericsson AB 2008-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. diff --git a/lib/ssh/test/ssh_trpt_test_lib.erl b/lib/ssh/test/ssh_trpt_test_lib.erl index 8de550af15..f2c9892f95 100644 --- a/lib/ssh/test/ssh_trpt_test_lib.erl +++ b/lib/ssh/test/ssh_trpt_test_lib.erl @@ -41,15 +41,20 @@ opts = [], timeout = 5000, % ms seen_hello = false, - enc = <<>>, ssh = #ssh{}, % #ssh{} alg_neg = {undefined,undefined}, % {own_kexinit, peer_kexinit} alg, % #alg{} vars = dict:new(), reply = [], % Some repy msgs are generated hidden in ssh_transport :[ prints = [], - return_value - }). + return_value, + + %% Packet retrival and decryption + decrypted_data_buffer = <<>>, + encrypted_data_buffer = <<>>, + aead_data = <<>>, + undecrypted_packet_length + }). -define(role(S), ((S#s.ssh)#ssh.role) ). @@ -475,11 +480,11 @@ recv(S0 = #s{}) -> %%%================================================================ try_find_crlf(Seen, S0) -> - case erlang:decode_packet(line,S0#s.enc,[]) of + case erlang:decode_packet(line,S0#s.encrypted_data_buffer,[]) of {more,_} -> - Line = <<Seen/binary,(S0#s.enc)/binary>>, + Line = <<Seen/binary,(S0#s.encrypted_data_buffer)/binary>>, S0#s{seen_hello = {more,Line}, - enc = <<>>, % didn't find a complete line + encrypted_data_buffer = <<>>, % didn't find a complete line % -> no more characters to test return_value = {more,Line} }; @@ -490,13 +495,13 @@ try_find_crlf(Seen, S0) -> S = opt(print_messages, S0, fun(X) when X==true;X==detail -> {"Recv info~n~p~n",[Line]} end), S#s{seen_hello = false, - enc = Rest, + encrypted_data_buffer = Rest, return_value = {info,Line}}; S1=#s{} -> S = opt(print_messages, S1, fun(X) when X==true;X==detail -> {"Recv hello~n~p~n",[Line]} end), S#s{seen_hello = true, - enc = Rest, + encrypted_data_buffer = Rest, return_value = {hello,Line}} end end. @@ -511,19 +516,73 @@ handle_hello(Bin, S=#s{ssh=C}) -> {{Vp,Vs}, server} -> S#s{ssh = C#ssh{c_vsn=Vp, c_version=Vs}} end. -receive_binary_msg(S0=#s{ssh=C0=#ssh{decrypt_block_size = BlockSize, +receive_binary_msg(S0=#s{}) -> + case ssh_transport:handle_packet_part( + S0#s.decrypted_data_buffer, + S0#s.encrypted_data_buffer, + S0#s.aead_data, + S0#s.undecrypted_packet_length, + S0#s.ssh) + of + {packet_decrypted, DecryptedBytes, EncryptedDataRest, Ssh1} -> + S1 = S0#s{ssh = Ssh1#ssh{recv_sequence = ssh_transport:next_seqnum(Ssh1#ssh.recv_sequence)}, + decrypted_data_buffer = <<>>, + undecrypted_packet_length = undefined, + aead_data = <<>>, + encrypted_data_buffer = EncryptedDataRest}, + case + catch ssh_message:decode(set_prefix_if_trouble(DecryptedBytes,S1)) + of + {'EXIT',_} -> fail(decode_failed,S1); + + Msg -> + Ssh2 = case Msg of + #ssh_msg_kexinit{} -> + ssh_transport:key_init(opposite_role(Ssh1), Ssh1, DecryptedBytes); + _ -> + Ssh1 + end, + S2 = opt(print_messages, S1, + fun(X) when X==true;X==detail -> {"Recv~n~s~n",[format_msg(Msg)]} end), + S3 = opt(print_messages, S2, + fun(detail) -> {"decrypted bytes ~p~n",[DecryptedBytes]} end), + S3#s{ssh = inc_recv_seq_num(Ssh2), + return_value = Msg + } + end; + + {get_more, DecryptedBytes, EncryptedDataRest, AeadData, TotalNeeded, Ssh1} -> + %% Here we know that there are not enough bytes in + %% EncryptedDataRest to use. We must wait for more. + Remaining = case TotalNeeded of + undefined -> 8; + _ -> TotalNeeded - size(DecryptedBytes) - size(EncryptedDataRest) + end, + receive_binary_msg( + receive_wait(Remaining, + S0#s{encrypted_data_buffer = EncryptedDataRest, + decrypted_data_buffer = DecryptedBytes, + undecrypted_packet_length = TotalNeeded, + aead_data = AeadData, + ssh = Ssh1} + )) + end. + + + +old_receive_binary_msg(S0=#s{ssh=C0=#ssh{decrypt_block_size = BlockSize, recv_mac_size = MacSize } }) -> - case size(S0#s.enc) >= max(8,BlockSize) of + case size(S0#s.encrypted_data_buffer) >= max(8,BlockSize) of false -> %% Need more bytes to decode the packet_length field - Remaining = max(8,BlockSize) - size(S0#s.enc), + Remaining = max(8,BlockSize) - size(S0#s.encrypted_data_buffer), receive_binary_msg( receive_wait(Remaining, S0) ); true -> %% Has enough bytes to decode the packet_length field {_, <<?UINT32(PacketLen), _/binary>>, _} = - ssh_transport:decrypt_blocks(S0#s.enc, BlockSize, C0), % FIXME: BlockSize should be at least 4 + ssh_transport:decrypt_blocks(S0#s.encrypted_data_buffer, BlockSize, C0), % FIXME: BlockSize should be at least 4 %% FIXME: Check that ((4+PacketLen) rem BlockSize) == 0 ? @@ -534,19 +593,19 @@ receive_binary_msg(S0=#s{ssh=C0=#ssh{decrypt_block_size = BlockSize, ((4+PacketLen) rem BlockSize) =/= 0 -> fail(bad_packet_length_modulo, S0); % FIXME: disconnect - size(S0#s.enc) >= (4 + PacketLen + MacSize) -> + size(S0#s.encrypted_data_buffer) >= (4 + PacketLen + MacSize) -> %% has the whole packet S0; true -> %% need more bytes to get have the whole packet - Remaining = (4 + PacketLen + MacSize) - size(S0#s.enc), + Remaining = (4 + PacketLen + MacSize) - size(S0#s.encrypted_data_buffer), receive_wait(Remaining, S0) end, %% Decrypt all, including the packet_length part (re-use the initial #ssh{}) {C1, SshPacket = <<?UINT32(_),?BYTE(PadLen),Tail/binary>>, EncRest} = - ssh_transport:decrypt_blocks(S1#s.enc, PacketLen+4, C0), + ssh_transport:decrypt_blocks(S1#s.encrypted_data_buffer, PacketLen+4, C0), PayloadLen = PacketLen - 1 - PadLen, <<CompressedPayload:PayloadLen/binary, _Padding:PadLen/binary>> = Tail, @@ -573,7 +632,7 @@ receive_binary_msg(S0=#s{ssh=C0=#ssh{decrypt_block_size = BlockSize, S3 = opt(print_messages, S2, fun(detail) -> {"decrypted bytes ~p~n",[SshPacket]} end), S3#s{ssh = inc_recv_seq_num(C3), - enc = Rest, + encrypted_data_buffer = Rest, return_value = Msg } end @@ -602,7 +661,7 @@ receive_poll(S=#s{socket=Sock}) -> inet:setopts(Sock, [{active,once}]), receive {tcp,Sock,Data} -> - receive_poll( S#s{enc = <<(S#s.enc)/binary,Data/binary>>} ); + receive_poll( S#s{encrypted_data_buffer = <<(S#s.encrypted_data_buffer)/binary,Data/binary>>} ); {tcp_closed,Sock} -> throw({tcp,tcp_closed}); {tcp_error, Sock, Reason} -> @@ -616,7 +675,7 @@ receive_wait(S=#s{socket=Sock, inet:setopts(Sock, [{active,once}]), receive {tcp,Sock,Data} -> - S#s{enc = <<(S#s.enc)/binary,Data/binary>>}; + S#s{encrypted_data_buffer = <<(S#s.encrypted_data_buffer)/binary,Data/binary>>}; {tcp_closed,Sock} -> throw({tcp,tcp_closed}); {tcp_error, Sock, Reason} -> @@ -627,11 +686,11 @@ receive_wait(S=#s{socket=Sock, receive_wait(N, S=#s{socket=Sock, timeout=Timeout, - enc=Enc0}) when N>0 -> + encrypted_data_buffer=Enc0}) when N>0 -> inet:setopts(Sock, [{active,once}]), receive {tcp,Sock,Data} -> - receive_wait(N-size(Data), S#s{enc = <<Enc0/binary,Data/binary>>}); + receive_wait(N-size(Data), S#s{encrypted_data_buffer = <<Enc0/binary,Data/binary>>}); {tcp_closed,Sock} -> throw({tcp,tcp_closed}); {tcp_error, Sock, Reason} -> diff --git a/lib/ssh/vsn.mk b/lib/ssh/vsn.mk index 99c5cbd346..837da27ab0 100644 --- a/lib/ssh/vsn.mk +++ b/lib/ssh/vsn.mk @@ -1,4 +1,4 @@ #-*-makefile-*- ; force emacs to enter makefile-mode -SSH_VSN = 4.6.6 +SSH_VSN = 4.7.6 APP_VSN = "ssh-$(SSH_VSN)" |