diff options
Diffstat (limited to 'lib/ssh/src')
44 files changed, 2964 insertions, 1594 deletions
diff --git a/lib/ssh/src/Makefile b/lib/ssh/src/Makefile index 90d71107ad..b44c8eef35 100644 --- a/lib/ssh/src/Makefile +++ b/lib/ssh/src/Makefile @@ -3,16 +3,17 @@ # # Copyright Ericsson AB 2004-2013. All Rights Reserved. # -# The contents of this file are subject to the Erlang Public License, -# Version 1.1, (the "License"); you may not use this file except in -# compliance with the License. You should have received a copy of the -# Erlang Public License along with this software. If not, it can be -# retrieved online at http://www.erlang.org/. +# 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 # -# Software distributed under the License is distributed on an "AS IS" -# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -# the License for the specific language governing rights and limitations -# under the License. +# 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% # @@ -66,7 +67,6 @@ MODULES= \ ssh_file \ ssh_io \ ssh_info \ - ssh_math \ ssh_message \ ssh_no_io \ ssh_sftp \ @@ -75,7 +75,7 @@ MODULES= \ ssh_transport \ ssh_xfer -PUBLIC_HRL_FILES= ssh.hrl ssh_userauth.hrl ssh_xfer.hrl +HRL_FILES = ERL_FILES= \ $(MODULES:%=%.erl) \ @@ -95,7 +95,7 @@ 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 +INTERNAL_HRL_FILES = ssh_auth.hrl ssh_connect.hrl ssh_transport.hrl ssh.hrl ssh_userauth.hrl ssh_xfer.hrl # ---------------------------------------------------- # FLAGS @@ -140,7 +140,82 @@ release_spec: opt $(INSTALL_DATA) $(BEHAVIOUR_TARGET_FILES) $(TARGET_FILES) $(APP_TARGET) \ $(APPUP_TARGET) "$(RELSYSDIR)/ebin" $(INSTALL_DIR) "$(RELSYSDIR)/include" - $(INSTALL_DATA) $(PUBLIC_HRL_FILES) "$(RELSYSDIR)/include" + release_docs_spec: + +deps: + erlc -M $(ERL_FILES) \ + | sed 's@$(ERL_TOP)/lib@../..@g' \ + | sed 's/\.$(EMULATOR)/\.$$\(EMULATOR\)/' \ + | sed 's@^ssh_@$$(EBIN)/ssh_@' + +ssh.$(EMULATOR): ssh.erl ssh.hrl ssh_connect.hrl \ + ../../public_key/include/public_key.hrl \ + ../../public_key/include/OTP-PUB-KEY.hrl \ + ../../public_key/include/PKCS-FRAME.hrl \ + ../../kernel/include/file.hrl +$(EBIN)/ssh_sup.$(EMULATOR): ssh_sup.erl +sshc_sup.$(EMULATOR): sshc_sup.erl +sshd_sup.$(EMULATOR): sshd_sup.erl ssh.hrl +$(EBIN)/ssh_connection_sup.$(EMULATOR): ssh_connection_sup.erl +$(EBIN)/ssh_connection.$(EMULATOR): ssh_connection.erl ssh.hrl ssh_connect.hrl \ + ssh_transport.hrl +$(EBIN)/ssh_connection_handler.$(EMULATOR): ssh_connection_handler.erl ssh.hrl \ + ssh_transport.hrl ssh_auth.hrl ssh_connect.hrl +$(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_acceptor_sup.$(EMULATOR): ssh_acceptor_sup.erl ssh.hrl +$(EBIN)/ssh_acceptor.$(EMULATOR): ssh_acceptor.erl ssh.hrl +$(EBIN)/ssh_app.$(EMULATOR): ssh_app.erl +$(EBIN)/ssh_auth.$(EMULATOR): ssh_auth.erl \ + ../../public_key/include/public_key.hrl \ + ../../public_key/include/OTP-PUB-KEY.hrl \ + ../../public_key/include/PKCS-FRAME.hrl \ + ssh.hrl ssh_auth.hrl ssh_transport.hrl +$(EBIN)/ssh_bits.$(EMULATOR): ssh_bits.erl ssh.hrl +$(EBIN)/ssh_cli.$(EMULATOR): ssh_cli.erl ssh.hrl ssh_connect.hrl +$(EBIN)/ssh_file.$(EMULATOR): ssh_file.erl \ + ../../public_key/include/public_key.hrl \ + ../../public_key/include/OTP-PUB-KEY.hrl \ + ../../public_key/include/PKCS-FRAME.hrl \ + ../../kernel/include/file.hrl ssh.hrl +$(EBIN)/ssh_io.$(EMULATOR): ssh_io.erl ssh.hrl +$(EBIN)/ssh_info.$(EMULATOR): ssh_info.erl +$(EBIN)/ssh_message.$(EMULATOR): ssh_message.erl \ + ../../public_key/include/public_key.hrl \ + ../../public_key/include/OTP-PUB-KEY.hrl \ + ../../public_key/include/PKCS-FRAME.hrl \ + ssh.hrl ssh_connect.hrl ssh_auth.hrl ssh_transport.hrl +$(EBIN)/ssh_no_io.$(EMULATOR): ssh_no_io.erl ssh_transport.hrl +$(EBIN)/ssh_sftp.$(EMULATOR): ssh_sftp.erl \ + ../../kernel/include/file.hrl ssh.hrl \ + ssh_xfer.hrl +$(EBIN)/ssh_sftpd.$(EMULATOR): ssh_sftpd.erl \ + ../../kernel/include/file.hrl ssh.hrl \ + ssh_xfer.hrl +$(EBIN)/ssh_sftpd_file.$(EMULATOR): ssh_sftpd_file.erl +$(EBIN)/ssh_transport.$(EMULATOR): ssh_transport.erl \ + ../../public_key/include/public_key.hrl \ + ../../public_key/include/OTP-PUB-KEY.hrl \ + ../../public_key/include/PKCS-FRAME.hrl \ + ../../kernel/include/inet.hrl \ + ssh_transport.hrl ssh.hrl +$(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_channel.$(EMULATOR): ssh_channel.erl ssh_connect.hrl +$(EBIN)/ssh_daemon_channel.$(EMULATOR): ssh_daemon_channel.erl +$(EBIN)/ssh_client_key_api.$(EMULATOR): ssh_client_key_api.erl \ + ../../public_key/include/public_key.hrl \ + ../../public_key/include/OTP-PUB-KEY.hrl \ + ../../public_key/include/PKCS-FRAME.hrl \ + ssh.hrl +$(EBIN)/ssh_server_key_api.$(EMULATOR): ssh_server_key_api.erl \ + ../../public_key/include/public_key.hrl \ + ../../public_key/include/OTP-PUB-KEY.hrl \ + ../../public_key/include/PKCS-FRAME.hrl \ + ssh.hrl + diff --git a/lib/ssh/src/ssh.app.src b/lib/ssh/src/ssh.app.src index bc01c539e0..4a76fd9cd3 100644 --- a/lib/ssh/src/ssh.app.src +++ b/lib/ssh/src/ssh.app.src @@ -24,7 +24,6 @@ ssh_file, ssh_io, ssh_info, - ssh_math, ssh_no_io, ssh_server_key_api, ssh_sftp, diff --git a/lib/ssh/src/ssh.appup.src b/lib/ssh/src/ssh.appup.src index e76c110c04..e38cecf226 100644 --- a/lib/ssh/src/ssh.appup.src +++ b/lib/ssh/src/ssh.appup.src @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2004-2015. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh.erl b/lib/ssh/src/ssh.erl index 7ed17618e7..54f94acbdc 100644 --- a/lib/ssh/src/ssh.erl +++ b/lib/ssh/src/ssh.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2004-2014. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -24,12 +25,16 @@ -include("ssh.hrl"). -include("ssh_connect.hrl"). -include_lib("public_key/include/public_key.hrl"). +-include_lib("kernel/include/file.hrl"). -export([start/0, start/1, stop/0, connect/3, connect/4, close/1, connection_info/2, channel_info/3, daemon/1, daemon/2, daemon/3, - stop_listener/1, stop_listener/2, stop_daemon/1, stop_daemon/2, - shell/1, shell/2, shell/3]). + default_algorithms/0, + stop_listener/1, stop_listener/2, stop_listener/3, + stop_daemon/1, stop_daemon/2, stop_daemon/3, + shell/1, shell/2, shell/3 + ]). %%-------------------------------------------------------------------- -spec start() -> ok | {error, term()}. @@ -113,9 +118,9 @@ channel_info(ConnectionRef, ChannelId, Options) -> ssh_connection_handler:channel_info(ConnectionRef, ChannelId, Options). %%-------------------------------------------------------------------- --spec daemon(integer()) -> {ok, pid()}. --spec daemon(integer(), proplists:proplist()) -> {ok, pid()}. --spec daemon(any | inet:ip_address(), integer(), proplists:proplist()) -> {ok, pid()}. +-spec daemon(integer()) -> {ok, pid()} | {error, term()}. +-spec daemon(integer(), proplists:proplist()) -> {ok, pid()} | {error, term()}. +-spec daemon(any | inet:ip_address(), integer(), proplists:proplist()) -> {ok, pid()} | {error, term()}. %% Description: Starts a server listening for SSH connections %% on the given port. @@ -157,7 +162,9 @@ daemon(HostAddr, Port, Options0) -> stop_listener(SysSup) -> ssh_system_sup:stop_listener(SysSup). stop_listener(Address, Port) -> - ssh_system_sup:stop_listener(Address, Port). + stop_listener(Address, Port, ?DEFAULT_PROFILE). +stop_listener(Address, Port, Profile) -> + ssh_system_sup:stop_listener(Address, Port, Profile). %%-------------------------------------------------------------------- -spec stop_daemon(pid()) -> ok. @@ -169,8 +176,9 @@ stop_listener(Address, Port) -> stop_daemon(SysSup) -> ssh_system_sup:stop_system(SysSup). stop_daemon(Address, Port) -> - ssh_system_sup:stop_system(Address, Port). - + ssh_system_sup:stop_system(Address, Port, ?DEFAULT_PROFILE). +stop_daemon(Address, Port, Profile) -> + ssh_system_sup:stop_system(Address, Port, Profile). %%-------------------------------------------------------------------- -spec shell(string()) -> _. -spec shell(string(), proplists:proplist()) -> _. @@ -208,6 +216,11 @@ shell(Host, Port, Options) -> end. %%-------------------------------------------------------------------- +%%-------------------------------------------------------------------- +default_algorithms() -> + ssh_transport:default_algorithms(). + +%%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- fix_idle_time(SshOptions) -> @@ -222,11 +235,29 @@ start_daemon(Host, Port, Options, Inet) -> {error, _Reason} = Error -> Error; {SocketOptions, SshOptions}-> - do_start_daemon(Host, Port,[{role, server} |SshOptions] , [Inet | SocketOptions]) + try + do_start_daemon(Host, Port,[{role, server} |SshOptions] , [Inet | SocketOptions]) + catch + throw:bad_fd -> {error,bad_fd}; + _C:_E -> {error,{cannot_start_daemon,_C,_E}} + end end. -do_start_daemon(Host, Port, Options, SocketOptions) -> - case ssh_system_sup:system_supervisor(Host, Port) of +do_start_daemon(Host0, Port0, Options, SocketOptions) -> + {Host,Port} = try + case proplists:get_value(fd, SocketOptions) of + undefined -> + {Host0,Port0}; + Fd when Port0==0 -> + find_hostport(Fd); + _ -> + {Host0,Port0} + end + catch + _:_ -> throw(bad_fd) + end, + Profile = proplists:get_value(profile, Options, ?DEFAULT_PROFILE), + case ssh_system_sup:system_supervisor(Host, Port, Profile) of undefined -> %% It would proably make more sense to call the %% address option host but that is a too big change at the @@ -258,8 +289,17 @@ do_start_daemon(Host, Port, Options, SocketOptions) -> end end. +find_hostport(Fd) -> + %% Using internal functions inet:open/8 and inet:close/0. + %% Don't try this at home unless you know what you are doing! + {ok,S} = inet:open(Fd, {0,0,0,0}, 0, [], tcp, inet, stream, inet_tcp), + {ok, HostPort} = inet:sockname(S), + ok = inet:close(S), + HostPort. + + handle_options(Opts) -> - try handle_option(proplists:unfold(Opts), [], []) of + try handle_option(algs_compatibility(proplists:unfold(Opts)), [], []) of {Inet, Ssh} -> {handle_ip(Inet), Ssh} catch @@ -267,6 +307,30 @@ handle_options(Opts) -> Error end. + +algs_compatibility(Os0) -> + %% Take care of old options 'public_key_alg' and 'pref_public_key_algs' + case proplists:get_value(public_key_alg, Os0) of + undefined -> + Os0; + A when is_atom(A) -> + %% Skip public_key_alg if pref_public_key_algs is defined: + Os = lists:keydelete(public_key_alg, 1, Os0), + case proplists:get_value(pref_public_key_algs,Os) of + undefined when A == 'ssh-rsa' ; A==ssh_rsa -> + [{pref_public_key_algs,['ssh-rsa','ssh-dss']} | Os]; + undefined when A == 'ssh-dss' ; A==ssh_dsa -> + [{pref_public_key_algs,['ssh-dss','ssh-rsa']} | Os]; + undefined -> + throw({error, {eoptions, {public_key_alg,A} }}); + _ -> + Os + end; + V -> + throw({error, {eoptions, {public_key_alg,V} }}) + end. + + handle_option([], SocketOptions, SshOptions) -> {SocketOptions, SshOptions}; handle_option([{system_dir, _} = Opt | Rest], SocketOptions, SshOptions) -> @@ -279,8 +343,6 @@ handle_option([{silently_accept_hosts, _} = Opt | Rest], SocketOptions, SshOptio handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{user_interaction, _} = Opt | Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); -handle_option([{public_key_alg, _} = Opt | Rest], SocketOptions, SshOptions) -> - handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{connect_timeout, _} = Opt | Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{user, _} = Opt | Rest], SocketOptions, SshOptions) -> @@ -295,11 +357,13 @@ handle_option([{user_passwords, _} = Opt | Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{pwdfun, _} = Opt | Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); -handle_option([{key_cb, _} = Opt | Rest], SocketOptions, SshOptions) -> - handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); -handle_option([{role, _} = Opt | Rest], SocketOptions, SshOptions) -> - handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); -handle_option([{compression, _} = Opt | Rest], SocketOptions, SshOptions) -> +handle_option([{key_cb, {Module, Options}} | Rest], SocketOptions, SshOptions) -> + handle_option(Rest, SocketOptions, [handle_ssh_option({key_cb, Module}), + handle_ssh_priv_option({key_cb_private, Options}) | + SshOptions]); +handle_option([{key_cb, Module} | Rest], SocketOptions, SshOptions) -> + handle_option([{key_cb, {Module, []}} | Rest], SocketOptions, SshOptions); +handle_option([{keyboard_interact_fun, _} = Opt | Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); %%Backwards compatibility handle_option([{allow_user_interaction, Value} | Rest], SocketOptions, SshOptions) -> @@ -310,6 +374,8 @@ handle_option([{connectfun, _} = Opt | Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{disconnectfun, _} = Opt | Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); +handle_option([{unexpectedfun, _} = Opt | Rest], SocketOptions, SshOptions) -> + handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{failfun, _} = Opt | Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{ssh_msg_debug_fun, _} = Opt | Rest], SocketOptions, SshOptions) -> @@ -335,6 +401,12 @@ handle_option([{auth_method_kb_interactive_data, _} = Opt | Rest], SocketOptions handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{pref_public_key_algs, _} = Opt | Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); +handle_option([{preferred_algorithms,_} = Opt | Rest], SocketOptions, SshOptions) -> + handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); +handle_option([{dh_gex_groups,_} = Opt | Rest], SocketOptions, SshOptions) -> + handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); +handle_option([{dh_gex_limits,_} = Opt | Rest], SocketOptions, SshOptions) -> + handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{quiet_mode, _} = Opt|Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{idle_time, _} = Opt | Rest], SocketOptions, SshOptions) -> @@ -343,16 +415,23 @@ handle_option([{rekey_limit, _} = Opt|Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{max_sessions, _} = Opt|Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); +handle_option([{max_channels, _} = Opt|Rest], SocketOptions, SshOptions) -> + handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{negotiation_timeout, _} = Opt|Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{parallel_login, _} = Opt|Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); -handle_option([parallel_login|Rest], SocketOptions, SshOptions) -> - handle_option(Rest, SocketOptions, [handle_ssh_option({parallel_login,true}) | SshOptions]); +%% (Is handled by proplists:unfold above:) +%% handle_option([parallel_login|Rest], SocketOptions, SshOptions) -> +%% handle_option(Rest, SocketOptions, [handle_ssh_option({parallel_login,true}) | SshOptions]); handle_option([{minimal_remote_max_packet_size, _} = Opt|Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([{id_string, _ID} = Opt|Rest], SocketOptions, SshOptions) -> handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); +handle_option([{profile, _ID} = Opt|Rest], SocketOptions, SshOptions) -> + handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); +handle_option([{max_random_length_padding, _Bool} = Opt|Rest], SocketOptions, SshOptions) -> + handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]); handle_option([Opt | Rest], SocketOptions, SshOptions) -> handle_option(Rest, [handle_inet_option(Opt) | SocketOptions], SshOptions). @@ -360,25 +439,83 @@ handle_option([Opt | Rest], SocketOptions, SshOptions) -> handle_ssh_option({minimal_remote_max_packet_size, Value} = Opt) when is_integer(Value), Value >=0 -> Opt; handle_ssh_option({system_dir, Value} = Opt) when is_list(Value) -> - Opt; + check_dir(Opt); handle_ssh_option({user_dir, Value} = Opt) when is_list(Value) -> - Opt; + check_dir(Opt); handle_ssh_option({user_dir_fun, Value} = Opt) when is_function(Value) -> Opt; handle_ssh_option({silently_accept_hosts, Value} = Opt) when is_boolean(Value) -> Opt; handle_ssh_option({user_interaction, Value} = Opt) when is_boolean(Value) -> Opt; -handle_ssh_option({public_key_alg, ssh_dsa}) -> - {public_key_alg, 'ssh-dss'}; -handle_ssh_option({public_key_alg, ssh_rsa}) -> - {public_key_alg, 'ssh-rsa'}; -handle_ssh_option({public_key_alg, Value} = Opt) when Value == 'ssh-rsa'; Value == 'ssh-dss' -> +handle_ssh_option({preferred_algorithms,[_|_]} = Opt) -> + handle_pref_algs(Opt); + +handle_ssh_option({dh_gex_groups,L0}) when is_list(L0) -> + {dh_gex_groups, + collect_per_size( + lists:foldl( + fun({N,G,P}, Acc) when is_integer(N),N>0, + is_integer(G),G>0, + is_integer(P),P>0 -> + [{N,{G,P}} | Acc]; + ({N,{G,P}}, Acc) when is_integer(N),N>0, + is_integer(G),G>0, + is_integer(P),P>0 -> + [{N,{G,P}} | Acc]; + ({N,GPs}, Acc) when is_list(GPs) -> + lists:foldr(fun({Gi,Pi}, Acci) when is_integer(Gi),Gi>0, + is_integer(Pi),Pi>0 -> + [{N,{Gi,Pi}} | Acci] + end, Acc, GPs) + end, [], L0))}; + +handle_ssh_option({dh_gex_groups,{Tag,File=[C|_]}}=Opt) when is_integer(C), C>0, + Tag == file ; + Tag == ssh_moduli_file -> + {ok,GroupDefs} = + case Tag of + file -> + file:consult(File); + ssh_moduli_file -> + case file:open(File,[read]) of + {ok,D} -> + try + {ok,Moduli} = read_moduli_file(D, 1, []), + file:close(D), + {ok, Moduli} + catch + _:_ -> + throw({error, {{eoptions, Opt}, "Bad format in file "++File}}) + end; + {error,enoent} -> + throw({error, {{eoptions, Opt}, "File not found:"++File}}); + {error,Error} -> + throw({error, {{eoptions, Opt}, io_lib:format("Error reading file ~s: ~p",[File,Error])}}) + end + end, + + try + handle_ssh_option({dh_gex_groups,GroupDefs}) + catch + _:_ -> + throw({error, {{eoptions, Opt}, "Bad format in file: "++File}}) + end; + + +handle_ssh_option({dh_gex_limits,{Min,Max}} = Opt) when is_integer(Min), Min>0, + is_integer(Max), Max>=Min -> + %% Server + Opt; +handle_ssh_option({dh_gex_limits,{Min,I,Max}} = Opt) when is_integer(Min), Min>0, + is_integer(I), I>=Min, + is_integer(Max), Max>=I -> + %% Client Opt; handle_ssh_option({pref_public_key_algs, Value} = Opt) when is_list(Value), length(Value) >= 1 -> - case handle_pref_algs(Value, []) of + case handle_user_pref_pubkey_algs(Value, []) of {true, NewOpts} -> - NewOpts; + {pref_public_key_algs, NewOpts}; _ -> throw({error, {eoptions, Opt}}) end; @@ -386,6 +523,8 @@ handle_ssh_option({connect_timeout, Value} = Opt) when is_integer(Value); Value Opt; handle_ssh_option({max_sessions, Value} = Opt) when is_integer(Value), Value>0 -> Opt; +handle_ssh_option({max_channels, Value} = Opt) when is_integer(Value), Value>0 -> + Opt; handle_ssh_option({negotiation_timeout, Value} = Opt) when is_integer(Value); Value == infinity -> Opt; handle_ssh_option({parallel_login, Value} = Opt) when Value==true ; Value==false -> @@ -400,10 +539,17 @@ handle_ssh_option({password, Value} = Opt) when is_list(Value) -> Opt; handle_ssh_option({user_passwords, Value} = Opt) when is_list(Value)-> Opt; -handle_ssh_option({pwdfun, Value} = Opt) when is_function(Value) -> +handle_ssh_option({pwdfun, Value} = Opt) when is_function(Value,2) -> + Opt; +handle_ssh_option({pwdfun, Value} = Opt) when is_function(Value,4) -> Opt; handle_ssh_option({key_cb, Value} = Opt) when is_atom(Value) -> Opt; +handle_ssh_option({key_cb, {CallbackMod, CallbackOptions}} = Opt) when is_atom(CallbackMod), + is_list(CallbackOptions) -> + Opt; +handle_ssh_option({keyboard_interact_fun, Value} = Opt) when is_function(Value,3) -> + Opt; handle_ssh_option({compression, Value} = Opt) when is_atom(Value) -> Opt; handle_ssh_option({exec, {Module, Function, _}} = Opt) when is_atom(Module), @@ -424,7 +570,9 @@ handle_ssh_option({infofun, Value} = Opt) when is_function(Value) -> Opt; handle_ssh_option({connectfun, Value} = Opt) when is_function(Value) -> Opt; -handle_ssh_option({disconnectfun , Value} = Opt) when is_function(Value) -> +handle_ssh_option({disconnectfun, Value} = Opt) when is_function(Value) -> + Opt; +handle_ssh_option({unexpectedfun, Value} = Opt) when is_function(Value,2) -> Opt; handle_ssh_option({failfun, Value} = Opt) when is_function(Value) -> Opt; @@ -458,9 +606,17 @@ handle_ssh_option({id_string, random}) -> {id_string, {random,2,5}}; %% 2 - 5 random characters handle_ssh_option({id_string, ID} = Opt) when is_list(ID) -> Opt; +handle_ssh_option({max_random_length_padding, Value} = Opt) when is_integer(Value), + Value =< 255 -> + Opt; +handle_ssh_option({profile, Value} = Opt) when is_atom(Value) -> + Opt; handle_ssh_option(Opt) -> throw({error, {eoptions, Opt}}). +handle_ssh_priv_option({key_cb_private, Value} = Opt) when is_list(Value) -> + Opt. + handle_inet_option({active, _} = Opt) -> throw({error, {{eoptions, Opt}, "SSH has built in flow control, " "and active is handled internally, user is not allowed" @@ -474,23 +630,83 @@ handle_inet_option({reuseaddr, _} = Opt) -> %% Option verified by inet handle_inet_option(Opt) -> Opt. + + %% Check preferred algs -handle_pref_algs([], Acc) -> - {true, lists:reverse(Acc)}; -handle_pref_algs([H|T], Acc) -> - case H of - ssh_dsa -> - handle_pref_algs(T, ['ssh-dss'| Acc]); - ssh_rsa -> - handle_pref_algs(T, ['ssh-rsa'| Acc]); - 'ssh-dss' -> - handle_pref_algs(T, ['ssh-dss'| Acc]); - 'ssh-rsa' -> - handle_pref_algs(T, ['ssh-rsa'| Acc]); - _ -> - false + +handle_pref_algs({preferred_algorithms,Algs}) -> + try alg_duplicates(Algs, [], []) of + [] -> + {preferred_algorithms, + [try ssh_transport:supported_algorithms(Key) + of + DefAlgs -> handle_pref_alg(Key,Vals,DefAlgs) + catch + _:_ -> throw({error, {{eoptions, {preferred_algorithms,Key}}, + "Bad preferred_algorithms key"}}) + end || {Key,Vals} <- Algs] + }; + + Dups -> + throw({error, {{eoptions, {preferred_algorithms,Dups}}, "Duplicates found"}}) + catch + _:_ -> + throw({error, {{eoptions, preferred_algorithms}, "Malformed"}}) end. +alg_duplicates([{K,V}|KVs], Ks, Dups0) -> + Dups = + case lists:member(K,Ks) of + true -> + [K|Dups0]; + false -> + Dups0 + end, + case V--lists:usort(V) of + [] -> + alg_duplicates(KVs, [K|Ks], Dups); + Ds -> + alg_duplicates(KVs, [K|Ks], Dups++Ds) + end; +alg_duplicates([], _Ks, Dups) -> + Dups. + +handle_pref_alg(Key, + Vs=[{client2server,C2Ss=[_|_]},{server2client,S2Cs=[_|_]}], + [{client2server,Sup_C2Ss},{server2client,Sup_S2Cs}] + ) -> + chk_alg_vs(Key, C2Ss, Sup_C2Ss), + chk_alg_vs(Key, S2Cs, Sup_S2Cs), + {Key, Vs}; + +handle_pref_alg(Key, + Vs=[{server2client,[_|_]},{client2server,[_|_]}], + Sup=[{client2server,_},{server2client,_}] + ) -> + handle_pref_alg(Key, lists:reverse(Vs), Sup); + +handle_pref_alg(Key, + Vs=[V|_], + Sup=[{client2server,_},{server2client,_}] + ) when is_atom(V) -> + handle_pref_alg(Key, [{client2server,Vs},{server2client,Vs}], Sup); + +handle_pref_alg(Key, + Vs=[V|_], + Sup=[S|_] + ) when is_atom(V), is_atom(S) -> + chk_alg_vs(Key, Vs, Sup), + {Key, Vs}; + +handle_pref_alg(Key, Vs, _) -> + throw({error, {{eoptions, {preferred_algorithms,[{Key,Vs}]}}, "Badly formed list"}}). + +chk_alg_vs(OptKey, Values, SupportedValues) -> + case (Values -- SupportedValues) of + [] -> Values; + Bad -> throw({error, {{eoptions, {OptKey,Bad}}, "Unsupported value(s) found"}}) + end. + handle_ip(Inet) -> %% Default to ipv4 case lists:member(inet, Inet) of true -> @@ -503,4 +719,74 @@ handle_ip(Inet) -> %% Default to ipv4 [inet | Inet] end end. - + +check_dir({_,Dir} = Opt) -> + case directory_exist_readable(Dir) of + ok -> + Opt; + {error,Error} -> + throw({error, {eoptions,{Opt,Error}}}) + end. + +directory_exist_readable(Dir) -> + case file:read_file_info(Dir) of + {ok, #file_info{type = directory, + access = Access}} -> + case Access of + read -> ok; + read_write -> ok; + _ -> {error, eacces} + end; + + {ok, #file_info{}}-> + {error, enotdir}; + + {error, Error} -> + {error, Error} + end. + + + +collect_per_size(L) -> + lists:foldr( + fun({Sz,GP}, [{Sz,GPs}|Acc]) -> [{Sz,[GP|GPs]}|Acc]; + ({Sz,GP}, Acc) -> [{Sz,[GP]}|Acc] + end, [], lists:sort(L)). + +read_moduli_file(D, I, Acc) -> + case io:get_line(D,"") of + {error,Error} -> + {error,Error}; + eof -> + {ok, Acc}; + "#" ++ _ -> read_moduli_file(D, I+1, Acc); + <<"#",_/binary>> -> read_moduli_file(D, I+1, Acc); + Data -> + Line = if is_binary(Data) -> binary_to_list(Data); + is_list(Data) -> Data + end, + try + [_Time,_Type,_Tests,_Tries,Size,G,P] = string:tokens(Line," \r\n"), + M = {list_to_integer(Size), + {list_to_integer(G), list_to_integer(P,16)} + }, + read_moduli_file(D, I+1, [M|Acc]) + catch + _:_ -> + read_moduli_file(D, I+1, Acc) + end + end. + +handle_user_pref_pubkey_algs([], Acc) -> + {true, lists:reverse(Acc)}; +handle_user_pref_pubkey_algs([H|T], Acc) -> + case lists:member(H, ?SUPPORTED_USER_KEYS) of + true -> + handle_user_pref_pubkey_algs(T, [H| Acc]); + + false when H==ssh_dsa -> handle_user_pref_pubkey_algs(T, ['ssh-dss'| Acc]); + false when H==ssh_rsa -> handle_user_pref_pubkey_algs(T, ['ssh-rsa'| Acc]); + + false -> + false + end. diff --git a/lib/ssh/src/ssh.hrl b/lib/ssh/src/ssh.hrl index 0c4d34f89c..f88098819d 100644 --- a/lib/ssh/src/ssh.hrl +++ b/lib/ssh/src/ssh.hrl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2004-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -28,20 +29,26 @@ -define(SSH_DEFAULT_PORT, 22). -define(SSH_MAX_PACKET_SIZE, (256*1024)). --define(SSH_LENGHT_INDICATOR_SIZE, 4). -define(REKEY_TIMOUT, 3600000). -define(REKEY_DATA_TIMOUT, 60000). +-define(DEFAULT_PROFILE, default). + +-define(SUPPORTED_AUTH_METHODS, "publickey,keyboard-interactive,password"). +-define(SUPPORTED_USER_KEYS, ['ssh-rsa','ssh-dss','ecdsa-sha2-nistp256','ecdsa-sha2-nistp384','ecdsa-sha2-nistp521']). -define(FALSE, 0). -define(TRUE, 1). %% basic binary constructors --define(BOOLEAN(X), X:8/unsigned-big-integer). --define(BYTE(X), X:8/unsigned-big-integer). --define(UINT16(X), X:16/unsigned-big-integer). --define(UINT32(X), X:32/unsigned-big-integer). --define(UINT64(X), X:64/unsigned-big-integer). +-define(BOOLEAN(X), (X):8/unsigned-big-integer). +-define(BYTE(X), (X):8/unsigned-big-integer). +-define(UINT16(X), (X):16/unsigned-big-integer). +-define(UINT32(X), (X):32/unsigned-big-integer). +-define(UINT64(X), (X):64/unsigned-big-integer). -define(STRING(X), ?UINT32((size(X))), (X)/binary). +-define(DEC_BIN(X,Len), ?UINT32(Len), X:Len/binary ). +-define(DEC_MPINT(I,Len), ?UINT32(Len), I:Len/big-signed-integer-unit:8 ). + %% building macros -define(boolean(X), case X of @@ -122,15 +129,18 @@ recv_sequence = 0, keyex_key, keyex_info, + random_length_padding = 255, % From RFC 4253 section 6. %% User auth user, service, userauth_quiet_mode, % boolean() - userauth_supported_methods , % - userauth_methods, + userauth_supported_methods, % string() eg "keyboard-interactive,password" + userauth_methods, % list( string() ) eg ["keyboard-interactive", "password"] + kb_tries_left = 0, % integer(), num tries left for "keyboard-interactive" userauth_preference, available_host_keys, + pwdfun_user_state, authenticated = false }). diff --git a/lib/ssh/src/ssh_acceptor.erl b/lib/ssh/src/ssh_acceptor.erl index 34988f17b6..d94dedf1bf 100644 --- a/lib/ssh/src/ssh_acceptor.erl +++ b/lib/ssh/src/ssh_acceptor.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2015. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -21,6 +22,8 @@ -module(ssh_acceptor). +-include("ssh.hrl"). + %% Internal application API -export([start_link/5, number_of_connections/1]). @@ -53,7 +56,12 @@ acceptor_init(Parent, Port, Address, SockOpts, Opts, AcceptTimeout) -> error end. -do_socket_listen(Callback, Port, Opts) -> +do_socket_listen(Callback, Port0, Opts) -> + Port = + case proplists:get_value(fd, Opts) of + undefined -> Port0; + _ -> 0 + end, case Callback:listen(Port, Opts) of {error, nxdomain} -> Callback:listen(Port, lists:delete(inet6, Opts)); @@ -82,8 +90,10 @@ acceptor_loop(Callback, Port, Address, Opts, ListenSocket, AcceptTimeout) -> end. handle_connection(Callback, Address, Port, Options, Socket) -> - SystemSup = ssh_system_sup:system_supervisor(Address, Port), SSHopts = proplists:get_value(ssh_opts, Options, []), + Profile = proplists:get_value(profile, SSHopts, ?DEFAULT_PROFILE), + SystemSup = ssh_system_sup:system_supervisor(Address, Port, Profile), + MaxSessions = proplists:get_value(max_sessions,SSHopts,infinity), case number_of_connections(SystemSup) < MaxSessions of true -> diff --git a/lib/ssh/src/ssh_acceptor_sup.erl b/lib/ssh/src/ssh_acceptor_sup.erl index 46fdef07d0..a3dc64850f 100644 --- a/lib/ssh/src/ssh_acceptor_sup.erl +++ b/lib/ssh/src/ssh_acceptor_sup.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2014. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -26,7 +27,9 @@ -module(ssh_acceptor_sup). -behaviour(supervisor). --export([start_link/1, start_child/2, stop_child/3]). +-include("ssh.hrl"). + +-export([start_link/1, start_child/2, stop_child/4]). %% Supervisor callback -export([init/1]). @@ -45,14 +48,16 @@ start_child(AccSup, ServerOpts) -> {error, already_present} -> Address = proplists:get_value(address, ServerOpts), Port = proplists:get_value(port, ServerOpts), - stop_child(AccSup, Address, Port), + Profile = proplists:get_value(profile, + proplists:get_value(ssh_opts, ServerOpts), ?DEFAULT_PROFILE), + stop_child(AccSup, Address, Port, Profile), supervisor:start_child(AccSup, Spec); Reply -> Reply end. -stop_child(AccSup, Address, Port) -> - Name = id(Address, Port), +stop_child(AccSup, Address, Port, Profile) -> + Name = id(Address, Port, Profile), case supervisor:terminate_child(AccSup, Name) of ok -> supervisor:delete_child(AccSup, Name); @@ -77,7 +82,8 @@ child_spec(ServerOpts) -> Address = proplists:get_value(address, ServerOpts), Port = proplists:get_value(port, ServerOpts), Timeout = proplists:get_value(timeout, ServerOpts, ?DEFAULT_TIMEOUT), - Name = id(Address, Port), + Profile = proplists:get_value(profile, proplists:get_value(ssh_opts, ServerOpts), ?DEFAULT_PROFILE), + Name = id(Address, Port, Profile), SocketOpts = proplists:get_value(socket_opts, ServerOpts), StartFunc = {ssh_acceptor, start_link, [Port, Address, [{active, false}, @@ -89,6 +95,11 @@ child_spec(ServerOpts) -> Type = worker, {Name, StartFunc, Restart, Shutdown, Type, Modules}. -id(Address, Port) -> - {ssh_acceptor_sup, Address, Port}. +id(Address, Port, Profile) -> + case is_list(Address) of + true -> + {ssh_acceptor_sup, any, Port, Profile}; + false -> + {ssh_acceptor_sup, Address, Port, Profile} + end. diff --git a/lib/ssh/src/ssh_app.erl b/lib/ssh/src/ssh_app.erl index 38659b1a2d..1a11938dd9 100644 --- a/lib/ssh/src/ssh_app.erl +++ b/lib/ssh/src/ssh_app.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2004-2010. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_auth.erl b/lib/ssh/src/ssh_auth.erl index 9d1ab14ce9..b71bed033a 100644 --- a/lib/ssh/src/ssh_auth.erl +++ b/lib/ssh/src/ssh_auth.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2014. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -40,27 +41,29 @@ publickey_msg([Alg, #ssh{user = User, session_id = SessionId, service = Service, opts = Opts} = Ssh]) -> - Hash = sha, %% Maybe option?! KeyCb = proplists:get_value(key_cb, Opts, ssh_file), - case KeyCb:user_key(Alg, Opts) of - {ok, Key} -> - StrAlgo = algorithm_string(Alg), - PubKeyBlob = encode_public_key(Key), - SigData = build_sig_data(SessionId, - User, Service, PubKeyBlob, StrAlgo), - Sig = ssh_transport:sign(SigData, Hash, Key), - SigBlob = list_to_binary([?string(StrAlgo), ?binary(Sig)]), - ssh_transport:ssh_packet( - #ssh_msg_userauth_request{user = User, - service = Service, - method = "publickey", - data = [?TRUE, - ?string(StrAlgo), - ?binary(PubKeyBlob), - ?binary(SigBlob)]}, - Ssh); + {ok, PrivKey} -> + StrAlgo = atom_to_list(Alg), + case encode_public_key(StrAlgo, ssh_transport:extract_public_key(PrivKey)) of + not_ok -> + not_ok; + PubKeyBlob -> + SigData = build_sig_data(SessionId, + User, Service, PubKeyBlob, StrAlgo), + Sig = ssh_transport:sign(SigData, Hash, PrivKey), + SigBlob = list_to_binary([?string(StrAlgo), ?binary(Sig)]), + ssh_transport:ssh_packet( + #ssh_msg_userauth_request{user = User, + service = Service, + method = "publickey", + data = [?TRUE, + ?string(StrAlgo), + ?binary(PubKeyBlob), + ?binary(SigBlob)]}, + Ssh) + end; _Error -> not_ok end. @@ -115,33 +118,21 @@ init_userauth_request_msg(#ssh{opts = Opts} = Ssh) -> service = "ssh-connection", method = "none", data = <<>>}, - case proplists:get_value(pref_public_key_algs, Opts, false) of - false -> - FirstAlg = proplists:get_value(public_key_alg, Opts, ?PREFERRED_PK_ALG), - SecondAlg = other_alg(FirstAlg), - Prefs = method_preference(FirstAlg, SecondAlg), - ssh_transport:ssh_packet(Msg, Ssh#ssh{user = User, - userauth_preference = Prefs, - userauth_methods = none, - service = "ssh-connection"}); - Algs -> - FirstAlg = lists:nth(1, Algs), - case length(Algs) =:= 2 of - true -> - SecondAlg = other_alg(FirstAlg), - Prefs = method_preference(FirstAlg, SecondAlg), - ssh_transport:ssh_packet(Msg, Ssh#ssh{user = User, - userauth_preference = Prefs, - userauth_methods = none, - service = "ssh-connection"}); - _ -> - Prefs = method_preference(FirstAlg), - ssh_transport:ssh_packet(Msg, Ssh#ssh{user = User, - userauth_preference = Prefs, - userauth_methods = none, - service = "ssh-connection"}) - end - end; + Algs0 = proplists:get_value(pref_public_key_algs, Opts, ?SUPPORTED_USER_KEYS), + %% The following line is not strictly correct. The call returns the + %% supported HOST key types while we are interested in USER keys. However, + %% they "happens" to be the same (for now). This could change.... + %% There is no danger as long as the set of user keys is a subset of the set + %% of host keys. + CryptoSupported = ssh_transport:supported_algorithms(public_key), + Algs = [A || A <- Algs0, + lists:member(A, CryptoSupported)], + + Prefs = method_preference(Algs), + ssh_transport:ssh_packet(Msg, Ssh#ssh{user = User, + userauth_preference = Prefs, + userauth_methods = none, + service = "ssh-connection"}); {error, no_user} -> ErrStr = "Could not determine the users name", throw(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_ILLEGAL_USER_NAME, @@ -168,7 +159,7 @@ userauth_request_msg(#ssh{userauth_methods = Methods, not_ok -> userauth_request_msg(Ssh); Result -> - Result + {Pref,Result} end; false -> userauth_request_msg(Ssh) @@ -185,17 +176,18 @@ handle_userauth_request(#ssh_msg_userauth_request{user = User, service = "ssh-connection", method = "password", data = <<?FALSE, ?UINT32(Sz), BinPwd:Sz/binary>>}, _, - #ssh{opts = Opts} = Ssh) -> + #ssh{opts = Opts, + userauth_supported_methods = Methods} = Ssh) -> Password = unicode:characters_to_list(BinPwd), - case check_password(User, Password, Opts) of - true -> + case check_password(User, Password, Opts, Ssh) of + {true,Ssh1} -> {authorized, User, - ssh_transport:ssh_packet(#ssh_msg_userauth_success{}, Ssh)}; - false -> + ssh_transport:ssh_packet(#ssh_msg_userauth_success{}, Ssh1)}; + {false,Ssh1} -> {not_authorized, {User, {error,"Bad user or password"}}, ssh_transport:ssh_packet(#ssh_msg_userauth_failure{ - authentications = "", - partial_success = false}, Ssh)} + authentications = Methods, + partial_success = false}, Ssh1)} end; handle_userauth_request(#ssh_msg_userauth_request{user = User, @@ -207,7 +199,7 @@ handle_userauth_request(#ssh_msg_userauth_request{user = User, %% ?UINT32(Sz2), NewBinPwd:Sz2/binary >> }, _, - Ssh) -> + #ssh{userauth_supported_methods = Methods} = Ssh) -> %% Password change without us having sent SSH_MSG_USERAUTH_PASSWD_CHANGEREQ (because we never do) %% RFC 4252 says: %% SSH_MSG_USERAUTH_FAILURE without partial success - The password @@ -216,7 +208,7 @@ handle_userauth_request(#ssh_msg_userauth_request{user = User, {not_authorized, {User, {error,"Password change not supported"}}, ssh_transport:ssh_packet(#ssh_msg_userauth_failure{ - authentications = "", + authentications = Methods, partial_success = false}, Ssh)}; handle_userauth_request(#ssh_msg_userauth_request{user = User, @@ -232,7 +224,9 @@ handle_userauth_request(#ssh_msg_userauth_request{user = User, service = "ssh-connection", method = "publickey", data = Data}, - SessionId, #ssh{opts = Opts} = Ssh) -> + SessionId, + #ssh{opts = Opts, + userauth_supported_methods = Methods} = Ssh) -> <<?BYTE(HaveSig), ?UINT32(ALen), BAlg:ALen/binary, ?UINT32(KLen), KeyBlob:KLen/binary, SigWLen/binary>> = Data, Alg = binary_to_list(BAlg), @@ -247,7 +241,7 @@ handle_userauth_request(#ssh_msg_userauth_request{user = User, false -> {not_authorized, {User, undefined}, ssh_transport:ssh_packet(#ssh_msg_userauth_failure{ - authentications="publickey,password", + authentications = Methods, partial_success = false}, Ssh)} end; ?FALSE -> @@ -261,49 +255,59 @@ handle_userauth_request(#ssh_msg_userauth_request{user = User, service = "ssh-connection", method = "keyboard-interactive", data = _}, - _, #ssh{opts = Opts} = Ssh) -> - %% RFC4256 - %% The data field contains: - %% - language tag (deprecated). If =/=[] SHOULD use it however. We skip - %% it for simplicity. - %% - submethods. "... the user can give a hint of which actual methods - %% he wants to use. ...". It's a "MAY use" so we skip - %% it. It also needs an understanding between the client - %% and the server. - %% - %% "The server MUST reply with an SSH_MSG_USERAUTH_SUCCESS, - %% SSH_MSG_USERAUTH_FAILURE, or SSH_MSG_USERAUTH_INFO_REQUEST message." - Default = {"SSH server", - "Enter password for \""++User++"\"", - "pwd: ", - false}, - - {Name, Instruction, Prompt, Echo} = - case proplists:get_value(auth_method_kb_interactive_data, Opts) of - undefined -> - Default; - {_,_,_,_}=V -> - V; - F when is_function(F) -> - {_,PeerName} = Ssh#ssh.peer, - F(PeerName, User, "ssh-connection") - end, - EchoEnc = case Echo of - true -> <<?TRUE>>; - false -> <<?FALSE>> - end, - Msg = #ssh_msg_userauth_info_request{name = unicode:characters_to_list(Name), - instruction = unicode:characters_to_list(Instruction), - language_tag = "", - num_prompts = 1, - data = <<?STRING(unicode:characters_to_binary(Prompt)), - EchoEnc/binary - >> - }, - {not_authorized, {User, undefined}, - ssh_transport:ssh_packet(Msg, Ssh#ssh{user = User, - opts = [{max_kb_tries,3},{kb_userauth_info_msg,Msg}|Opts] - })}; + _, #ssh{opts = Opts, + kb_tries_left = KbTriesLeft, + userauth_supported_methods = Methods} = Ssh) -> + case KbTriesLeft of + N when N<1 -> + {not_authorized, {User, {authmethod, "keyboard-interactive"}}, + ssh_transport:ssh_packet( + #ssh_msg_userauth_failure{authentications = Methods, + partial_success = false}, Ssh)}; + + _ -> + %% RFC4256 + %% The data field contains: + %% - language tag (deprecated). If =/=[] SHOULD use it however. We skip + %% it for simplicity. + %% - submethods. "... the user can give a hint of which actual methods + %% he wants to use. ...". It's a "MAY use" so we skip + %% it. It also needs an understanding between the client + %% and the server. + %% + %% "The server MUST reply with an SSH_MSG_USERAUTH_SUCCESS, + %% SSH_MSG_USERAUTH_FAILURE, or SSH_MSG_USERAUTH_INFO_REQUEST message." + Default = {"SSH server", + "Enter password for \""++User++"\"", + "password: ", + false}, + + {Name, Instruction, Prompt, Echo} = + case proplists:get_value(auth_method_kb_interactive_data, Opts) of + undefined -> + Default; + {_,_,_,_}=V -> + V; + F when is_function(F) -> + {_,PeerName} = Ssh#ssh.peer, + F(PeerName, User, "ssh-connection") + end, + EchoEnc = case Echo of + true -> <<?TRUE>>; + false -> <<?FALSE>> + end, + Msg = #ssh_msg_userauth_info_request{name = unicode:characters_to_list(Name), + instruction = unicode:characters_to_list(Instruction), + language_tag = "", + num_prompts = 1, + data = <<?STRING(unicode:characters_to_binary(Prompt)), + EchoEnc/binary + >> + }, + {not_authorized, {User, undefined}, + ssh_transport:ssh_packet(Msg, Ssh#ssh{user = User + })} + end; handle_userauth_request(#ssh_msg_userauth_request{user = User, service = "ssh-connection", @@ -314,6 +318,8 @@ handle_userauth_request(#ssh_msg_userauth_request{user = User, #ssh_msg_userauth_failure{authentications = Methods, partial_success = false}, Ssh)}. + + handle_userauth_info_request( #ssh_msg_userauth_info_request{name = Name, instruction = Instr, @@ -330,33 +336,20 @@ handle_userauth_info_request( handle_userauth_info_response(#ssh_msg_userauth_info_response{num_responses = 1, data = <<?UINT32(Sz), Password:Sz/binary>>}, - #ssh{opts = Opts0, - user = User} = Ssh) -> - NumTriesLeft = proplists:get_value(max_kb_tries, Opts0, 0) - 1, - Opts = lists:keydelete(max_kb_tries,1,Opts0), - case check_password(User, unicode:characters_to_list(Password), Opts) of - true -> + #ssh{opts = Opts, + kb_tries_left = KbTriesLeft, + user = User, + userauth_supported_methods = Methods} = Ssh) -> + case check_password(User, unicode:characters_to_list(Password), Opts, Ssh) of + {true,Ssh1} -> {authorized, User, - ssh_transport:ssh_packet(#ssh_msg_userauth_success{}, Ssh)}; - false when NumTriesLeft > 0 -> - UserAuthInfoMsg = - (proplists:get_value(kb_userauth_info_msg,Opts)) - #ssh_msg_userauth_info_request{name = "", - instruction = - lists:concat( - ["Bad user or password, try again. ", - integer_to_list(NumTriesLeft), - " tries left."])}, - {not_authorized, {User, undefined}, - ssh_transport:ssh_packet(UserAuthInfoMsg, - Ssh#ssh{opts = [{max_kb_tries,NumTriesLeft}|Opts]})}; - - false -> + ssh_transport:ssh_packet(#ssh_msg_userauth_success{}, Ssh1)}; + {false,Ssh1} -> {not_authorized, {User, {error,"Bad user or password"}}, ssh_transport:ssh_packet(#ssh_msg_userauth_failure{ - authentications = "", + authentications = Methods, partial_success = false}, - Ssh#ssh{opts = lists:keydelete(kb_userauth_info_msg,1,Opts)} + Ssh1#ssh{kb_tries_left = max(KbTriesLeft-1, 0)} )} end; @@ -367,20 +360,23 @@ handle_userauth_info_response(#ssh_msg_userauth_info_response{}, "keyboard-interactive", language = "en"}). + %%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- -method_preference(Alg1, Alg2) -> - [{"publickey", ?MODULE, publickey_msg, [Alg1]}, - {"publickey", ?MODULE, publickey_msg,[Alg2]}, - {"password", ?MODULE, password_msg, []}, - {"keyboard-interactive", ?MODULE, keyboard_interactive_msg, []} - ]. -method_preference(Alg1) -> - [{"publickey", ?MODULE, publickey_msg, [Alg1]}, - {"password", ?MODULE, password_msg, []}, - {"keyboard-interactive", ?MODULE, keyboard_interactive_msg, []} - ]. +method_preference(Algs) -> + lists:foldr(fun(A, Acc) -> + [{"publickey", ?MODULE, publickey_msg, [A]} | Acc] + end, + [{"password", ?MODULE, password_msg, []}, + {"keyboard-interactive", ?MODULE, keyboard_interactive_msg, []}, + {"keyboard-interactive", ?MODULE, keyboard_interactive_msg, []}, + {"keyboard-interactive", ?MODULE, keyboard_interactive_msg, []}, + {"keyboard-interactive", ?MODULE, keyboard_interactive_msg, []}, + {"keyboard-interactive", ?MODULE, keyboard_interactive_msg, []}, + {"keyboard-interactive", ?MODULE, keyboard_interactive_msg, []} + ], + Algs). user_name(Opts) -> Env = case os:type() of @@ -401,13 +397,34 @@ user_name(Opts) -> {ok, User} end. -check_password(User, Password, Opts) -> +check_password(User, Password, Opts, Ssh) -> case proplists:get_value(pwdfun, Opts) of undefined -> Static = get_password_option(Opts, User), - Password == Static; - Cheker -> - Cheker(User, Password) + {Password == Static, Ssh}; + + Checker when is_function(Checker,2) -> + {Checker(User, Password), Ssh}; + + Checker when is_function(Checker,4) -> + #ssh{pwdfun_user_state = PrivateState, + peer = {_,PeerAddr={_,_}} + } = Ssh, + case Checker(User, Password, PeerAddr, PrivateState) of + true -> + {true,Ssh}; + false -> + {false,Ssh}; + {true,NewState} -> + {true, Ssh#ssh{pwdfun_user_state=NewState}}; + {false,NewState} -> + {false, Ssh#ssh{pwdfun_user_state=NewState}}; + disconnect -> + throw(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE, + description = + "Unable to connect using the available authentication methods", + language = ""}) + end end. get_password_option(Opts, User) -> @@ -444,10 +461,7 @@ build_sig_data(SessionId, User, Service, KeyBlob, Alg) -> ?binary(KeyBlob)], list_to_binary(Sig). -algorithm_string('ssh-rsa') -> - "ssh-rsa"; -algorithm_string('ssh-dss') -> - "ssh-dss". + decode_keyboard_interactive_prompts(_NumPrompts, Data) -> ssh_message:decode_keyboard_interactive_prompts(Data, []). @@ -463,19 +477,19 @@ 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) -> - [""]; + []; 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, _, Name, Instr, PromptInfos, _, _, NumPrompts) -> +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) -> - if Name /= "" -> IoCb:format("~s", [Name]); + if Name /= "" -> IoCb:format("~s~n", [Name]); true -> ok end, - if Instr /= "" -> IoCb:format("~s", [Instr]); + if Instr /= "" -> IoCb:format("~s~n", [Instr]); true -> ok end, lists:map(fun({Prompt, true}) -> IoCb:read_line(Prompt, Opts); @@ -498,33 +512,18 @@ keyboard_interact_fun(KbdInteractFun, Name, Instr, PromptInfos, NumPrompts) -> language = "en"}}) end. -other_alg('ssh-rsa') -> - 'ssh-dss'; -other_alg('ssh-dss') -> - 'ssh-rsa'. -decode_public_key_v2(<<?UINT32(Len0), _:Len0/binary, - ?UINT32(Len1), BinE:Len1/binary, - ?UINT32(Len2), BinN:Len2/binary>> - ,"ssh-rsa") -> - E = ssh_bits:erlint(Len1, BinE), - N = ssh_bits:erlint(Len2, BinN), - {ok, #'RSAPublicKey'{publicExponent = E, modulus = N}}; -decode_public_key_v2(<<?UINT32(Len0), _:Len0/binary, - ?UINT32(Len1), BinP:Len1/binary, - ?UINT32(Len2), BinQ:Len2/binary, - ?UINT32(Len3), BinG:Len3/binary, - ?UINT32(Len4), BinY:Len4/binary>> - , "ssh-dss") -> - P = ssh_bits:erlint(Len1, BinP), - Q = ssh_bits:erlint(Len2, BinQ), - G = ssh_bits:erlint(Len3, BinG), - Y = ssh_bits:erlint(Len4, BinY), - {ok, {Y, #'Dss-Parms'{p = P, q = Q, g = G}}}; - -decode_public_key_v2(_, _) -> - {error, bad_format}. - -encode_public_key(#'RSAPrivateKey'{publicExponent = E, modulus = N}) -> - ssh_bits:encode(["ssh-rsa",E,N], [string,mpint,mpint]); -encode_public_key(#'DSAPrivateKey'{p = P, q = Q, g = G, y = Y}) -> - ssh_bits:encode(["ssh-dss",P,Q,G,Y], [string,mpint,mpint,mpint,mpint]). +decode_public_key_v2(Bin, _Type) -> + try + public_key:ssh_decode(Bin, ssh2_pubkey) + of + Key -> {ok, Key} + catch + _:_ -> {error, bad_format} + end. + +encode_public_key(_Alg, Key) -> + try + public_key:ssh_encode(Key, ssh2_pubkey) + catch + _:_ -> not_ok + end. diff --git a/lib/ssh/src/ssh_auth.hrl b/lib/ssh/src/ssh_auth.hrl index 6cd8e6bf14..449bc4fa45 100644 --- a/lib/ssh/src/ssh_auth.hrl +++ b/lib/ssh/src/ssh_auth.hrl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2012. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -21,9 +22,6 @@ %%% Description: Ssh User Authentication Protocol --define(SUPPORTED_AUTH_METHODS, "publickey,keyboard-interactive,password"). - --define(PREFERRED_PK_ALG, 'ssh-rsa'). -define(SSH_MSG_USERAUTH_REQUEST, 50). -define(SSH_MSG_USERAUTH_FAILURE, 51). diff --git a/lib/ssh/src/ssh_bits.erl b/lib/ssh/src/ssh_bits.erl index 8aaff93b9f..4da3a6018b 100644 --- a/lib/ssh/src/ssh_bits.erl +++ b/lib/ssh/src/ssh_bits.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2005-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -26,7 +27,7 @@ -include("ssh.hrl"). -export([encode/2]). --export([mpint/1, erlint/2, string/1, name_list/1]). +-export([mpint/1, string/1, name_list/1]). -export([random/1]). -define(name_list(X), @@ -145,11 +146,7 @@ enc(Xs, ['...'| []], _Offset) -> enc([], [],_) -> []. -erlint(Len, BinInt) -> - Sz = Len*8, - <<Int:Sz/big-signed-integer>> = BinInt, - Int. - + %% %% Create a binary with constant bytes %% diff --git a/lib/ssh/src/ssh_channel.erl b/lib/ssh/src/ssh_channel.erl index 5c24f362b1..d15a2c8eba 100644 --- a/lib/ssh/src/ssh_channel.erl +++ b/lib/ssh/src/ssh_channel.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_channel_sup.erl b/lib/ssh/src/ssh_channel_sup.erl index ee37ed35f8..7c381553b8 100644 --- a/lib/ssh/src/ssh_channel_sup.erl +++ b/lib/ssh/src/ssh_channel_sup.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_cli.erl b/lib/ssh/src/ssh_cli.erl index 18841e3d2d..71f62a960e 100644 --- a/lib/ssh/src/ssh_cli.erl +++ b/lib/ssh/src/ssh_cli.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2005-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -98,7 +99,7 @@ handle_ssh_msg({ssh_cm, ConnectionHandler, Pty = Pty0#ssh_pty{width = Width, height = Height, pixel_width = PixWidth, pixel_height = PixHeight}, - {Chars, NewBuf} = io_request({window_change, Pty0}, Buf, Pty), + {Chars, NewBuf} = io_request({window_change, Pty0}, Buf, Pty, undefined), write_chars(ConnectionHandler, ChannelId, Chars), {ok, State#state{pty = Pty, buf = NewBuf}}; @@ -188,7 +189,7 @@ handle_msg({Group, tty_geometry}, #state{group = Group, handle_msg({Group, Req}, #state{group = Group, buf = Buf, pty = Pty, cm = ConnectionHandler, channel = ChannelId} = State) -> - {Chars, NewBuf} = io_request(Req, Buf, Pty), + {Chars, NewBuf} = io_request(Req, Buf, Pty, Group), write_chars(ConnectionHandler, ChannelId, Chars), {ok, State#state{buf = NewBuf}}; @@ -263,40 +264,49 @@ eval(Error) -> %%% displaying device... %%% We are *not* really unicode aware yet, we just filter away characters %%% beyond the latin1 range. We however handle the unicode binaries... -io_request({window_change, OldTty}, Buf, Tty) -> +io_request({window_change, OldTty}, Buf, Tty, _Group) -> window_change(Tty, OldTty, Buf); -io_request({put_chars, Cs}, Buf, Tty) -> +io_request({put_chars, Cs}, Buf, Tty, _Group) -> put_chars(bin_to_list(Cs), Buf, Tty); -io_request({put_chars, unicode, Cs}, Buf, Tty) -> +io_request({put_chars, unicode, Cs}, Buf, Tty, _Group) -> put_chars(unicode:characters_to_list(Cs,unicode), Buf, Tty); -io_request({insert_chars, Cs}, Buf, Tty) -> +io_request({insert_chars, Cs}, Buf, Tty, _Group) -> insert_chars(bin_to_list(Cs), Buf, Tty); -io_request({insert_chars, unicode, Cs}, Buf, Tty) -> +io_request({insert_chars, unicode, Cs}, Buf, Tty, _Group) -> insert_chars(unicode:characters_to_list(Cs,unicode), Buf, Tty); -io_request({move_rel, N}, Buf, Tty) -> +io_request({move_rel, N}, Buf, Tty, _Group) -> move_rel(N, Buf, Tty); -io_request({delete_chars,N}, Buf, Tty) -> +io_request({delete_chars,N}, Buf, Tty, _Group) -> delete_chars(N, Buf, Tty); -io_request(beep, Buf, _Tty) -> +io_request(beep, Buf, _Tty, _Group) -> {[7], Buf}; %% New in R12 -io_request({get_geometry,columns},Buf,Tty) -> +io_request({get_geometry,columns},Buf,Tty, _Group) -> {ok, Tty#ssh_pty.width, Buf}; -io_request({get_geometry,rows},Buf,Tty) -> +io_request({get_geometry,rows},Buf,Tty, _Group) -> {ok, Tty#ssh_pty.height, Buf}; -io_request({requests,Rs}, Buf, Tty) -> - io_requests(Rs, Buf, Tty, []); -io_request(tty_geometry, Buf, Tty) -> - io_requests([{move_rel, 0}, {put_chars, unicode, [10]}], Buf, Tty, []); +io_request({requests,Rs}, Buf, Tty, Group) -> + io_requests(Rs, Buf, Tty, [], Group); +io_request(tty_geometry, Buf, Tty, Group) -> + io_requests([{move_rel, 0}, {put_chars, unicode, [10]}], + Buf, Tty, [], Group); %{[], Buf}; -io_request(_R, Buf, _Tty) -> + +%% New in 18 +io_request({put_chars_sync, Class, Cs, Reply}, Buf, Tty, Group) -> + %% We handle these asynchronous for now, if we need output guarantees + %% we have to handle these synchronously + Group ! {reply, Reply}, + io_request({put_chars, Class, Cs}, Buf, Tty, Group); + +io_request(_R, Buf, _Tty, _Group) -> {[], Buf}. -io_requests([R|Rs], Buf, Tty, Acc) -> - {Chars, NewBuf} = io_request(R, Buf, Tty), - io_requests(Rs, NewBuf, Tty, [Acc|Chars]); -io_requests([], Buf, _Tty, Acc) -> +io_requests([R|Rs], Buf, Tty, Acc, Group) -> + {Chars, NewBuf} = io_request(R, Buf, Tty, Group), + io_requests(Rs, NewBuf, Tty, [Acc|Chars], Group); +io_requests([], Buf, _Tty, Acc, _Group) -> {Acc, Buf}. %%% return commands for cursor navigation, assume everything is ansi diff --git a/lib/ssh/src/ssh_client_key.erl b/lib/ssh/src/ssh_client_key.erl index 2c48884dc2..0758865ad1 100644 --- a/lib/ssh/src/ssh_client_key.erl +++ b/lib/ssh/src/ssh_client_key.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2011-2012. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_client_key_api.erl b/lib/ssh/src/ssh_client_key_api.erl index a17c7cbc77..7fe97b6c13 100644 --- a/lib/ssh/src/ssh_client_key_api.erl +++ b/lib/ssh/src/ssh_client_key_api.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2011-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_connect.hrl b/lib/ssh/src/ssh_connect.hrl index d14f7ce27d..9f9f3de8fa 100644 --- a/lib/ssh/src/ssh_connect.hrl +++ b/lib/ssh/src/ssh_connect.hrl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2005-2014. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -247,6 +248,9 @@ local_id, %% local channel id recv_window_size, + recv_window_pending = 0, %% Sum of window size updates that has not + %% yet been sent. This limits the number + %% of sent update msgs. recv_packet_size, recv_close = false, diff --git a/lib/ssh/src/ssh_connection.erl b/lib/ssh/src/ssh_connection.erl index 654b9d4bde..a34478732c 100644 --- a/lib/ssh/src/ssh_connection.erl +++ b/lib/ssh/src/ssh_connection.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2015. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -196,15 +197,16 @@ reply_request(_,false, _, _) -> %%-------------------------------------------------------------------- ptty_alloc(ConnectionHandler, Channel, Options) -> ptty_alloc(ConnectionHandler, Channel, Options, infinity). -ptty_alloc(ConnectionHandler, Channel, Options, TimeOut) -> +ptty_alloc(ConnectionHandler, Channel, Options0, TimeOut) -> + Options = backwards_compatible(Options0, []), {Width, PixWidth} = pty_default_dimensions(width, Options), - {Hight, PixHight} = pty_default_dimensions(hight, Options), + {Height, PixHeight} = pty_default_dimensions(height, Options), pty_req(ConnectionHandler, Channel, - proplists:get_value(term, Options, default_term()), + proplists:get_value(term, Options, os:getenv("TERM", ?DEFAULT_TERMINAL)), proplists:get_value(width, Options, Width), - proplists:get_value(hight, Options, Hight), + proplists:get_value(height, Options, Height), proplists:get_value(pixel_widh, Options, PixWidth), - proplists:get_value(pixel_hight, Options, PixHight), + proplists:get_value(pixel_height, Options, PixHeight), proplists:get_value(pty_opts, Options, []), TimeOut ). %%-------------------------------------------------------------------- @@ -660,7 +662,7 @@ handle_msg(#ssh_msg_channel_request{recipient_channel = ChannelId, ReplyMsg = {subsystem, ChannelId, WantReply, binary_to_list(SsName)}, try - {ok, Pid} = start_subsytem(SsName, Connection, Channel0, ReplyMsg), + {ok, Pid} = start_subsystem(SsName, Connection, Channel0, ReplyMsg), erlang:monitor(process, Pid), Channel = Channel0#channel{user = Pid}, ssh_channel:cache_update(Cache, Channel), @@ -933,14 +935,27 @@ encode_ip(Addr) when is_list(Addr) -> end end. -start_channel(Cb, Id, Args, SubSysSup) -> - start_channel(Cb, Id, Args, SubSysSup, undefined). +start_channel(Cb, Id, Args, SubSysSup, Opts) -> + start_channel(Cb, Id, Args, SubSysSup, undefined, Opts). -start_channel(Cb, Id, Args, SubSysSup, Exec) -> +start_channel(Cb, Id, Args, SubSysSup, Exec, Opts) -> ChildSpec = child_spec(Cb, Id, Args, Exec), ChannelSup = ssh_subsystem_sup:channel_supervisor(SubSysSup), + assert_limit_num_channels_not_exceeded(ChannelSup, Opts), ssh_channel_sup:start_child(ChannelSup, ChildSpec). +assert_limit_num_channels_not_exceeded(ChannelSup, Opts) -> + MaxNumChannels = proplists:get_value(max_channels, Opts, infinity), + NumChannels = length([x || {_,_,worker,[ssh_channel]} <- + supervisor:which_children(ChannelSup)]), + if + %% Note that NumChannels is BEFORE starting a new one + NumChannels < MaxNumChannels -> + ok; + true -> + throw(max_num_channels_exceeded) + end. + %%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- @@ -996,17 +1011,19 @@ child_spec(Callback, Id, Args, Exec) -> start_cli(#connection{cli_spec = no_cli}, _) -> {error, cli_disabled}; -start_cli(#connection{cli_spec = {CbModule, Args}, exec = Exec, +start_cli(#connection{options = Options, + cli_spec = {CbModule, Args}, + exec = Exec, sub_system_supervisor = SubSysSup}, ChannelId) -> - start_channel(CbModule, ChannelId, Args, SubSysSup, Exec). + start_channel(CbModule, ChannelId, Args, SubSysSup, Exec, Options). -start_subsytem(BinName, #connection{options = 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); + start_channel(Callback, ChannelId, Opts, SubSysSup, Options); {Other, _} when Other =/= none -> {error, legacy_option_not_supported} end. @@ -1340,10 +1357,11 @@ decode_ip(Addr) when is_binary(Addr) -> {ok,A} -> A end. -default_term() -> - case os:getenv("TERM") of - false -> - ?DEFAULT_TERMINAL; - Str when is_list(Str)-> - Str - end. +backwards_compatible([], Acc) -> + Acc; +backwards_compatible([{hight, Value} | Rest], Acc) -> + backwards_compatible(Rest, [{height, Value} | Acc]); +backwards_compatible([{pixel_hight, Value} | Rest], Acc) -> + backwards_compatible(Rest, [{height, Value} | Acc]); +backwards_compatible([Value| Rest], Acc) -> + backwards_compatible(Rest, [ Value | Acc]). diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl index f751094211..ce1931e4f4 100644 --- a/lib/ssh/src/ssh_connection_handler.erl +++ b/lib/ssh/src/ssh_connection_handler.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2015. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -33,7 +34,7 @@ -include("ssh_transport.hrl"). -include("ssh_auth.hrl"). -include("ssh_connect.hrl"). - +-compile(export_all). -export([start_link/3]). %% Internal application API @@ -45,8 +46,13 @@ get_print_info/1]). %% gen_fsm callbacks --export([hello/2, kexinit/2, key_exchange/2, new_keys/2, - userauth/2, connected/2, +-export([hello/2, kexinit/2, key_exchange/2, + key_exchange_dh_gex_init/2, key_exchange_dh_gex_reply/2, + new_keys/2, + service_request/2, connected/2, + userauth/2, + userauth_keyboard_interactive/2, + userauth_keyboard_interactive_info_response/2, error/2]). -export([init/1, handle_event/3, @@ -70,6 +76,8 @@ undecoded_packet_length, % integer() key_exchange_init_msg, % #ssh_msg_kexinit{} renegotiate = false, % boolean() + last_size_rekey = 0, + event_queue = [], connection_queue, address, port, @@ -77,11 +85,21 @@ recbuf }). --type state_name() :: hello | kexinit | key_exchange | new_keys | userauth | connection. +-type state_name() :: hello | kexinit | key_exchange | key_exchange_dh_gex_init | + key_exchange_dh_gex_reply | new_keys | service_request | + userauth | userauth_keyboard_interactive | + userauth_keyboard_interactive_info_response | + connection. + -type gen_fsm_state_return() :: {next_state, state_name(), term()} | {next_state, state_name(), term(), timeout()} | {stop, term(), term()}. +-type gen_fsm_sync_return() :: {next_state, state_name(), term()} | + {next_state, state_name(), term(), timeout()} | + {reply, term(), state_name(), term()} | + {stop, term(), term(), term()}. + %%==================================================================== %% Internal application API %%==================================================================== @@ -409,59 +427,91 @@ key_exchange(#ssh_msg_kexdh_reply{} = Msg, send_msg(NewKeys, State), {next_state, new_keys, next_packet(State#state{ssh_params = Ssh})}; +key_exchange(#ssh_msg_kex_dh_gex_request{} = Msg, + #state{ssh_params = #ssh{role = server} = Ssh0} = State) -> + {ok, GexGroup, Ssh} = ssh_transport:handle_kex_dh_gex_request(Msg, Ssh0), + send_msg(GexGroup, State), + {next_state, key_exchange_dh_gex_init, next_packet(State#state{ssh_params = Ssh})}; + +key_exchange(#ssh_msg_kex_dh_gex_request_old{} = Msg, + #state{ssh_params = #ssh{role = server} = Ssh0} = State) -> + {ok, GexGroup, Ssh} = ssh_transport:handle_kex_dh_gex_request(Msg, Ssh0), + send_msg(GexGroup, State), + {next_state, key_exchange_dh_gex_init, next_packet(State#state{ssh_params = Ssh})}; + key_exchange(#ssh_msg_kex_dh_gex_group{} = Msg, + #state{ssh_params = #ssh{role = client} = Ssh0} = State) -> + {ok, KexGexInit, Ssh} = ssh_transport:handle_kex_dh_gex_group(Msg, Ssh0), + send_msg(KexGexInit, State), + {next_state, key_exchange_dh_gex_reply, next_packet(State#state{ssh_params = Ssh})}; + +key_exchange(#ssh_msg_kex_ecdh_init{} = Msg, #state{ssh_params = #ssh{role = server} = Ssh0} = State) -> - {ok, NextKexMsg, Ssh1} = ssh_transport:handle_kex_dh_gex_group(Msg, Ssh0), - send_msg(NextKexMsg, State), + {ok, KexEcdhReply, Ssh1} = ssh_transport:handle_kex_ecdh_init(Msg, Ssh0), + send_msg(KexEcdhReply, State), {ok, NewKeys, Ssh} = ssh_transport:new_keys_message(Ssh1), send_msg(NewKeys, State), {next_state, new_keys, next_packet(State#state{ssh_params = Ssh})}; -key_exchange(#ssh_msg_kex_dh_gex_request{} = Msg, +key_exchange(#ssh_msg_kex_ecdh_reply{} = Msg, #state{ssh_params = #ssh{role = client} = Ssh0} = State) -> - {ok, NextKexMsg, Ssh} = ssh_transport:handle_kex_dh_gex_request(Msg, Ssh0), - send_msg(NextKexMsg, State), - {next_state, new_keys, next_packet(State#state{ssh_params = Ssh})}; + {ok, NewKeys, Ssh} = ssh_transport:handle_kex_ecdh_reply(Msg, Ssh0), + send_msg(NewKeys, State), + {next_state, new_keys, next_packet(State#state{ssh_params = Ssh})}. -key_exchange(#ssh_msg_kex_dh_gex_reply{} = Msg, - #state{ssh_params = #ssh{role = client} = Ssh0} = State) -> - {ok, NewKeys, Ssh} = ssh_transport:handle_kex_dh_gex_reply(Msg, Ssh0), +%%-------------------------------------------------------------------- +-spec key_exchange_dh_gex_init(#ssh_msg_kex_dh_gex_init{}, #state{}) -> gen_fsm_state_return(). +%%-------------------------------------------------------------------- +key_exchange_dh_gex_init(#ssh_msg_kex_dh_gex_init{} = Msg, + #state{ssh_params = #ssh{role = server} = Ssh0} = State) -> + {ok, KexGexReply, Ssh1} = ssh_transport:handle_kex_dh_gex_init(Msg, Ssh0), + send_msg(KexGexReply, State), + {ok, NewKeys, Ssh} = ssh_transport:new_keys_message(Ssh1), send_msg(NewKeys, State), {next_state, new_keys, next_packet(State#state{ssh_params = Ssh})}. %%-------------------------------------------------------------------- +-spec key_exchange_dh_gex_reply(#ssh_msg_kex_dh_gex_reply{}, #state{}) -> gen_fsm_state_return(). +%%-------------------------------------------------------------------- +key_exchange_dh_gex_reply(#ssh_msg_kex_dh_gex_reply{} = Msg, + #state{ssh_params = #ssh{role = client} = Ssh0} = State) -> + {ok, NewKeys, Ssh1} = ssh_transport:handle_kex_dh_gex_reply(Msg, Ssh0), + send_msg(NewKeys, State), + {next_state, new_keys, next_packet(State#state{ssh_params = Ssh1})}. + +%%-------------------------------------------------------------------- -spec new_keys(#ssh_msg_newkeys{}, #state{}) -> gen_fsm_state_return(). %%-------------------------------------------------------------------- new_keys(#ssh_msg_newkeys{} = Msg, #state{ssh_params = Ssh0} = State0) -> {ok, Ssh} = ssh_transport:handle_new_keys(Msg, Ssh0), - {NextStateName, State} = - after_new_keys(State0#state{ssh_params = Ssh}), - {next_state, NextStateName, next_packet(State)}. + after_new_keys(next_packet(State0#state{ssh_params = Ssh})). %%-------------------------------------------------------------------- --spec userauth(#ssh_msg_service_request{} | #ssh_msg_service_accept{} | - #ssh_msg_userauth_request{} | #ssh_msg_userauth_info_request{} | - #ssh_msg_userauth_info_response{} | #ssh_msg_userauth_success{} | - #ssh_msg_userauth_failure{} | #ssh_msg_userauth_banner{}, - #state{}) -> gen_fsm_state_return(). +-spec service_request(#ssh_msg_service_request{} | #ssh_msg_service_accept{}, + #state{}) -> gen_fsm_state_return(). %%-------------------------------------------------------------------- - -userauth(#ssh_msg_service_request{name = "ssh-userauth"} = Msg, +service_request(#ssh_msg_service_request{name = "ssh-userauth"} = Msg, #state{ssh_params = #ssh{role = server, session_id = SessionId} = Ssh0} = State) -> {ok, {Reply, Ssh}} = ssh_auth:handle_userauth_request(Msg, SessionId, Ssh0), send_msg(Reply, State), {next_state, userauth, next_packet(State#state{ssh_params = Ssh})}; -userauth(#ssh_msg_service_accept{name = "ssh-userauth"}, - #state{ssh_params = #ssh{role = client, - service = "ssh-userauth"} = Ssh0} = - State) -> +service_request(#ssh_msg_service_accept{name = "ssh-userauth"}, + #state{ssh_params = #ssh{role = client, + service = "ssh-userauth"} = Ssh0} = + State) -> {Msg, Ssh} = ssh_auth:init_userauth_request_msg(Ssh0), send_msg(Msg, State), - {next_state, userauth, next_packet(State#state{auth_user = Ssh#ssh.user, ssh_params = Ssh})}; + {next_state, userauth, next_packet(State#state{auth_user = Ssh#ssh.user, ssh_params = Ssh})}. +%%-------------------------------------------------------------------- +-spec userauth(#ssh_msg_userauth_request{} | #ssh_msg_userauth_info_request{} | + #ssh_msg_userauth_info_response{} | #ssh_msg_userauth_success{} | + #ssh_msg_userauth_failure{} | #ssh_msg_userauth_banner{}, + #state{}) -> gen_fsm_state_return(). +%%-------------------------------------------------------------------- userauth(#ssh_msg_userauth_request{service = "ssh-connection", method = "none"} = Msg, #state{ssh_params = #ssh{session_id = SessionId, role = server, @@ -478,43 +528,28 @@ userauth(#ssh_msg_userauth_request{service = "ssh-connection", service = "ssh-connection", peer = {_, Address}} = Ssh0, opts = Opts, starter = Pid} = State) -> - case ssh_auth:handle_userauth_request(Msg, SessionId, Ssh0) of - {authorized, User, {Reply, Ssh}} -> - send_msg(Reply, State), - Pid ! ssh_connected, - connected_fun(User, Address, Method, Opts), - {next_state, connected, - next_packet(State#state{auth_user = User, ssh_params = Ssh})}; - {not_authorized, {User, Reason}, {Reply, Ssh}} -> - retry_fun(User, Address, Reason, Opts), - send_msg(Reply, State), - {next_state, userauth, next_packet(State#state{ssh_params = Ssh})} + case lists:member(Method, Ssh0#ssh.userauth_methods) of + true -> + case ssh_auth:handle_userauth_request(Msg, SessionId, Ssh0) of + {authorized, User, {Reply, Ssh}} -> + send_msg(Reply, State), + Pid ! ssh_connected, + connected_fun(User, Address, Method, Opts), + {next_state, connected, + next_packet(State#state{auth_user = User, ssh_params = Ssh#ssh{authenticated = true}})}; + {not_authorized, {User, Reason}, {Reply, Ssh}} when Method == "keyboard-interactive" -> + retry_fun(User, Address, Reason, Opts), + send_msg(Reply, State), + {next_state, userauth_keyboard_interactive, next_packet(State#state{ssh_params = Ssh})}; + {not_authorized, {User, Reason}, {Reply, Ssh}} -> + retry_fun(User, Address, Reason, Opts), + send_msg(Reply, State), + {next_state, userauth, next_packet(State#state{ssh_params = Ssh})} + end; + false -> + userauth(Msg#ssh_msg_userauth_request{method="none"}, State) end; -userauth(#ssh_msg_userauth_info_request{} = Msg, - #state{ssh_params = #ssh{role = client, - io_cb = IoCb} = Ssh0} = State) -> - {ok, {Reply, Ssh}} = ssh_auth:handle_userauth_info_request(Msg, IoCb, Ssh0), - send_msg(Reply, State), - {next_state, userauth, next_packet(State#state{ssh_params = Ssh})}; - -userauth(#ssh_msg_userauth_info_response{} = Msg, - #state{ssh_params = #ssh{role = server, - peer = {_, Address}} = Ssh0, - opts = Opts, starter = Pid} = State) -> - case ssh_auth:handle_userauth_info_response(Msg, Ssh0) of - {authorized, User, {Reply, Ssh}} -> - send_msg(Reply, State), - Pid ! ssh_connected, - connected_fun(User, Address, "keyboard-interactive", Opts), - {next_state, connected, - next_packet(State#state{auth_user = User, ssh_params = Ssh})}; - {not_authorized, {User, Reason}, {Reply, Ssh}} -> - retry_fun(User, Address, Reason, Opts), - send_msg(Reply, State), - {next_state, userauth, next_packet(State#state{ssh_params = Ssh})} - end; - userauth(#ssh_msg_userauth_success{}, #state{ssh_params = #ssh{role = client} = Ssh, starter = Pid} = State) -> Pid ! ssh_connected, @@ -541,19 +576,25 @@ userauth(#ssh_msg_userauth_failure{authentications = Methodes}, {disconnect, DisconnectMsg, {Msg, Ssh}} -> send_msg(Msg, State), handle_disconnect(DisconnectMsg, State#state{ssh_params = Ssh}); - {Msg, Ssh} -> + {"keyboard-interactive", {Msg, Ssh}} -> + send_msg(Msg, State), + {next_state, userauth_keyboard_interactive, next_packet(State#state{ssh_params = Ssh})}; + {_Method, {Msg, Ssh}} -> send_msg(Msg, State), {next_state, userauth, next_packet(State#state{ssh_params = Ssh})} end; %% The prefered authentication method failed try next method -userauth(#ssh_msg_userauth_failure{}, +userauth(#ssh_msg_userauth_failure{}, #state{ssh_params = #ssh{role = client} = Ssh0} = State) -> case ssh_auth:userauth_request_msg(Ssh0) of {disconnect, DisconnectMsg,{Msg, Ssh}} -> send_msg(Msg, State), handle_disconnect(DisconnectMsg, State#state{ssh_params = Ssh}); - {Msg, Ssh} -> + {"keyboard-interactive", {Msg, Ssh}} -> + send_msg(Msg, State), + {next_state, userauth_keyboard_interactive, next_packet(State#state{ssh_params = Ssh})}; + {_Method, {Msg, Ssh}} -> send_msg(Msg, State), {next_state, userauth, next_packet(State#state{ssh_params = Ssh})} end; @@ -568,15 +609,63 @@ userauth(#ssh_msg_userauth_banner{message = Msg}, io:format("~s", [Msg]), {next_state, userauth, next_packet(State)}. + + +userauth_keyboard_interactive(#ssh_msg_userauth_info_request{} = Msg, + #state{ssh_params = #ssh{role = client, + io_cb = IoCb} = Ssh0} = State) -> + {ok, {Reply, Ssh}} = ssh_auth:handle_userauth_info_request(Msg, IoCb, Ssh0), + send_msg(Reply, State), + {next_state, userauth_keyboard_interactive_info_response, next_packet(State#state{ssh_params = Ssh})}; + +userauth_keyboard_interactive(#ssh_msg_userauth_info_response{} = Msg, + #state{ssh_params = #ssh{role = server, + peer = {_, Address}} = Ssh0, + opts = Opts, starter = Pid} = State) -> + case ssh_auth:handle_userauth_info_response(Msg, Ssh0) of + {authorized, User, {Reply, Ssh}} -> + send_msg(Reply, State), + Pid ! ssh_connected, + connected_fun(User, Address, "keyboard-interactive", Opts), + {next_state, connected, + next_packet(State#state{auth_user = User, ssh_params = Ssh#ssh{authenticated = true}})}; + {not_authorized, {User, Reason}, {Reply, Ssh}} -> + retry_fun(User, Address, Reason, Opts), + send_msg(Reply, State), + {next_state, userauth, next_packet(State#state{ssh_params = Ssh})} + end; +userauth_keyboard_interactive(Msg = #ssh_msg_userauth_failure{}, + #state{ssh_params = Ssh0 = + #ssh{role = client, + userauth_preference = Prefs0}} + = State) -> + Prefs = [{Method,M,F,A} || {Method,M,F,A} <- Prefs0, + Method =/= "keyboard-interactive"], + userauth(Msg, State#state{ssh_params = Ssh0#ssh{userauth_preference=Prefs}}). + + + +userauth_keyboard_interactive_info_response(Msg=#ssh_msg_userauth_failure{}, + #state{ssh_params = #ssh{role = client}} = State) -> + userauth(Msg, State); +userauth_keyboard_interactive_info_response(Msg=#ssh_msg_userauth_success{}, + #state{ssh_params = #ssh{role = client}} = State) -> + userauth(Msg, State); +userauth_keyboard_interactive_info_response(Msg=#ssh_msg_userauth_info_request{}, + #state{ssh_params = #ssh{role = client}} = State) -> + userauth_keyboard_interactive(Msg, State). + %%-------------------------------------------------------------------- -spec connected({#ssh_msg_kexinit{}, binary()}, %%| %% #ssh_msg_kexdh_init{}, #state{}) -> gen_fsm_state_return(). %%-------------------------------------------------------------------- -connected({#ssh_msg_kexinit{}, _Payload} = Event, State) -> - kexinit(Event, State#state{renegotiate = true}). -%% ; -%% connected(#ssh_msg_kexdh_init{} = Event, State) -> -%% key_exchange(Event, State#state{renegotiate = true}). +connected({#ssh_msg_kexinit{}, _Payload} = Event, #state{ssh_params = Ssh0} = State0) -> + {KeyInitMsg, SshPacket, Ssh} = ssh_transport:key_exchange_init_msg(Ssh0), + State = State0#state{ssh_params = Ssh, + key_exchange_init_msg = KeyInitMsg, + renegotiate = true}, + send_msg(SshPacket, State), + kexinit(Event, State). %%-------------------------------------------------------------------- -spec handle_event(#ssh_msg_disconnect{} | #ssh_msg_ignore{} | #ssh_msg_debug{} | @@ -605,33 +694,6 @@ handle_event(#ssh_msg_debug{always_display = Display, message = DbgMsg, language handle_event(#ssh_msg_unimplemented{}, StateName, State) -> {next_state, StateName, next_packet(State)}; -handle_event({adjust_window, ChannelId, Bytes}, StateName, - #state{connection_state = - #connection{channel_cache = Cache}} = State0) -> - State = - case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{recv_window_size = WinSize, remote_id = Id} = Channel -> - ssh_channel:cache_update(Cache, Channel#channel{recv_window_size = - WinSize + Bytes}), - Msg = ssh_connection:channel_adjust_window_msg(Id, Bytes), - send_replies([{connection_reply, Msg}], State0); - undefined -> - State0 - end, - {next_state, StateName, next_packet(State)}; - -handle_event({reply_request, success, ChannelId}, StateName, - #state{connection_state = - #connection{channel_cache = Cache}} = State0) -> - State = case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{remote_id = RemoteId} -> - Msg = ssh_connection:channel_success_msg(RemoteId), - send_replies([{connection_reply, Msg}], State0); - undefined -> - State0 - end, - {next_state, StateName, State}; - handle_event(renegotiate, connected, #state{ssh_params = Ssh0} = State) -> {KeyInitMsg, SshPacket, Ssh} = ssh_transport:key_exchange_init_msg(Ssh0), @@ -643,13 +705,13 @@ handle_event(renegotiate, connected, #state{ssh_params = Ssh0} renegotiate = true})}; handle_event(renegotiate, StateName, State) -> - timer:apply_after(?REKEY_TIMOUT, gen_fsm, send_all_state_event, [self(), renegotiate]), - %% Allready in keyexcahange so ignore + %% Already in key-exchange so safe to ignore {next_state, StateName, State}; %% Rekey due to sent data limit reached? handle_event(data_size, connected, #state{ssh_params = Ssh0} = State) -> - {ok, [{send_oct,Sent}]} = inet:getstat(State#state.socket, [send_oct]), + {ok, [{send_oct,Sent0}]} = inet:getstat(State#state.socket, [send_oct]), + Sent = Sent0 - State#state.last_size_rekey, MaxSent = proplists:get_value(rekey_limit, State#state.opts, 1024000000), timer:apply_after(?REKEY_DATA_TIMOUT, gen_fsm, send_all_state_event, [self(), data_size]), case Sent >= MaxSent of @@ -659,11 +721,59 @@ handle_event(data_size, connected, #state{ssh_params = Ssh0} = State) -> {next_state, kexinit, next_packet(State#state{ssh_params = Ssh, key_exchange_init_msg = KeyInitMsg, - renegotiate = true})}; + renegotiate = true, + last_size_rekey = Sent0})}; _ -> {next_state, connected, next_packet(State)} end; handle_event(data_size, StateName, State) -> + %% Already in key-exchange so safe to ignore + {next_state, StateName, State}; + +handle_event(Event, StateName, State) when StateName /= connected -> + Events = [{event, Event} | State#state.event_queue], + {next_state, StateName, State#state{event_queue = Events}}; + +handle_event({adjust_window, ChannelId, Bytes}, StateName, + #state{connection_state = + #connection{channel_cache = Cache}} = State0) -> + State = + case ssh_channel:cache_lookup(Cache, 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, + Channel#channel{recv_window_pending = Pending + Bytes}), + State0; + + #channel{recv_window_size = WinSize, + 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, + Channel#channel{recv_window_size = + WinSize + Bytes + Pending, + recv_window_pending = 0}), + Msg = ssh_connection:channel_adjust_window_msg(Id, Bytes + Pending), + send_replies([{connection_reply, Msg}], State0); + + undefined -> + State0 + end, + {next_state, StateName, next_packet(State)}; + +handle_event({reply_request, success, ChannelId}, StateName, + #state{connection_state = + #connection{channel_cache = Cache}} = State0) -> + State = case ssh_channel:cache_lookup(Cache, ChannelId) of + #channel{remote_id = RemoteId} -> + Msg = ssh_connection:channel_success_msg(RemoteId), + send_replies([{connection_reply, Msg}], State0); + undefined -> + State0 + end, {next_state, StateName, State}; handle_event({request, ChannelPid, ChannelId, Type, Data}, StateName, State0) -> @@ -694,8 +804,62 @@ handle_event({unknown, Data}, StateName, State) -> sockname]} | {channel_info, channel_id(), [recv_window | send_window]} | {close, channel_id()} | stop, term(), state_name(), #state{}) - -> gen_fsm_state_return(). + -> gen_fsm_sync_return(). %%-------------------------------------------------------------------- +handle_sync_event(get_print_info, _From, StateName, State) -> + Reply = + try + {inet:sockname(State#state.socket), + inet:peername(State#state.socket) + } + of + {{ok,Local}, {ok,Remote}} -> {{Local,Remote},io_lib:format("statename=~p",[StateName])}; + _ -> {{"-",0},"-"} + catch + _:_ -> {{"?",0},"?"} + end, + {reply, Reply, StateName, State}; + +handle_sync_event({connection_info, Options}, _From, StateName, State) -> + Info = ssh_info(Options, State, []), + {reply, Info, StateName, State}; + +handle_sync_event({channel_info, ChannelId, Options}, _From, StateName, + #state{connection_state = #connection{channel_cache = Cache}} = State) -> + case ssh_channel:cache_lookup(Cache, ChannelId) of + #channel{} = Channel -> + Info = ssh_channel_info(Options, Channel, []), + {reply, Info, StateName, State}; + undefined -> + {reply, [], StateName, State} + end; + +handle_sync_event({info, ChannelPid}, _From, StateName, + #state{connection_state = + #connection{channel_cache = Cache}} = State) -> + Result = ssh_channel:cache_foldl( + fun(Channel, Acc) when ChannelPid == all; + Channel#channel.user == ChannelPid -> + [Channel | Acc]; + (_, Acc) -> + Acc + end, [], Cache), + {reply, {ok, Result}, StateName, State}; + +handle_sync_event(stop, _, _StateName, #state{connection_state = Connection0, + role = Role} = State0) -> + {disconnect, _Reason, {{replies, Replies}, Connection}} = + ssh_connection:handle_msg(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, + description = "User closed down connection", + language = "en"}, Connection0, Role), + State = send_replies(Replies, State0), + {stop, normal, ok, State#state{connection_state = Connection}}; + + +handle_sync_event(Event, From, StateName, State) when StateName /= connected -> + Events = [{sync, Event, From} | State#state.event_queue], + {next_state, StateName, State#state{event_queue = Events}}; + handle_sync_event({request, ChannelPid, ChannelId, Type, Data, Timeout}, From, StateName, State0) -> {{replies, Replies}, State1} = handle_request(ChannelPid, ChannelId, Type, Data, @@ -798,46 +962,6 @@ handle_sync_event({recv_window, ChannelId}, _From, StateName, end, {reply, Reply, StateName, next_packet(State)}; -handle_sync_event(get_print_info, _From, StateName, State) -> - Reply = - try - {inet:sockname(State#state.socket), - inet:peername(State#state.socket) - } - of - {{ok,Local}, {ok,Remote}} -> {{Local,Remote},io_lib:format("statename=~p",[StateName])}; - _ -> {{"-",0},"-"} - catch - _:_ -> {{"?",0},"?"} - end, - {reply, Reply, StateName, State}; - -handle_sync_event({connection_info, Options}, _From, StateName, State) -> - Info = ssh_info(Options, State, []), - {reply, Info, StateName, State}; - -handle_sync_event({channel_info, ChannelId, Options}, _From, StateName, - #state{connection_state = #connection{channel_cache = Cache}} = State) -> - case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{} = Channel -> - Info = ssh_channel_info(Options, Channel, []), - {reply, Info, StateName, State}; - undefined -> - {reply, [], StateName, State} - end; - -handle_sync_event({info, ChannelPid}, _From, StateName, - #state{connection_state = - #connection{channel_cache = Cache}} = State) -> - Result = ssh_channel:cache_foldl( - fun(Channel, Acc) when ChannelPid == all; - Channel#channel.user == ChannelPid -> - [Channel | Acc]; - (_, Acc) -> - Acc - end, [], Cache), - {reply, {ok, Result}, StateName, State}; - handle_sync_event({close, ChannelId}, _, StateName, #state{connection_state = #connection{channel_cache = Cache}} = State0) -> @@ -852,19 +976,7 @@ handle_sync_event({close, ChannelId}, _, StateName, undefined -> State0 end, - {reply, ok, StateName, next_packet(State)}; - -handle_sync_event(stop, _, _StateName, #state{connection_state = Connection0, - role = Role, - opts = Opts} = State0) -> - {disconnect, Reason, {{replies, Replies}, Connection}} = - ssh_connection:handle_msg(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, - description = "User closed down connection", - language = "en"}, Connection0, Role), - State = send_replies(Replies, State0), - SSHOpts = proplists:get_value(ssh_opts, Opts), - disconnect_fun(Reason, SSHOpts), - {stop, normal, ok, State#state{connection_state = Connection}}. + {reply, ok, StateName, next_packet(State)}. %%-------------------------------------------------------------------- -spec handle_info({atom(), port(), binary()} | {atom(), port()} | @@ -881,57 +993,55 @@ handle_info({Protocol, Socket, Info}, hello, transport_protocol = Protocol} = State) -> event({info_line, Info}, hello, State); -handle_info({Protocol, Socket, Data}, Statename, +handle_info({Protocol, Socket, Data}, StateName, #state{socket = Socket, transport_protocol = Protocol, - ssh_params = #ssh{decrypt_block_size = BlockSize, - recv_mac_size = MacSize} = Ssh0, - decoded_data_buffer = <<>>, - encoded_data_buffer = EncData0} = State0) -> - - %% Implementations SHOULD decrypt the length after receiving the - %% first 8 (or cipher block size, whichever is larger) bytes of a - %% packet. (RFC 4253: Section 6 - Binary Packet Protocol) - case size(EncData0) + size(Data) >= erlang:max(8, BlockSize) of - true -> - {Ssh, SshPacketLen, DecData, EncData} = - - ssh_transport:decrypt_first_block(<<EncData0/binary, - Data/binary>>, Ssh0), - case SshPacketLen > ?SSH_MAX_PACKET_SIZE of - true -> - DisconnectMsg = - #ssh_msg_disconnect{code = - ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = "Bad packet length " - ++ integer_to_list(SshPacketLen), - language = "en"}, - handle_disconnect(DisconnectMsg, State0); - false -> - RemainingSshPacketLen = - (SshPacketLen + ?SSH_LENGHT_INDICATOR_SIZE) - - BlockSize + MacSize, - State = State0#state{ssh_params = Ssh}, - handle_ssh_packet_data(RemainingSshPacketLen, - DecData, EncData, Statename, - State) - end; - false -> - {next_state, Statename, - next_packet(State0#state{encoded_data_buffer = - <<EncData0/binary, Data/binary>>})} - end; - -handle_info({Protocol, Socket, Data}, Statename, - #state{socket = Socket, - transport_protocol = Protocol, - decoded_data_buffer = DecData, - encoded_data_buffer = EncData, - undecoded_packet_length = Len} = - State) when is_integer(Len) -> - handle_ssh_packet_data(Len, DecData, <<EncData/binary, Data/binary>>, - Statename, State); + ssh_params = Ssh0, + decoded_data_buffer = DecData0, + encoded_data_buffer = EncData0, + undecoded_packet_length = RemainingSshPacketLen0} = State0) -> + Encoded = <<EncData0/binary, Data/binary>>, + try ssh_transport:handle_packet_part(DecData0, Encoded, RemainingSshPacketLen0, Ssh0) + of + {get_more, DecBytes, EncDataRest, RemainingSshPacketLen, Ssh1} -> + {next_state, StateName, + next_packet(State0#state{encoded_data_buffer = EncDataRest, + decoded_data_buffer = DecBytes, + undecoded_packet_length = RemainingSshPacketLen, + ssh_params = Ssh1})}; + {decoded, MsgBytes, EncDataRest, Ssh1} -> + generate_event(MsgBytes, StateName, + State0#state{ssh_params = Ssh1, + %% Important to be set for + %% next_packet +%%% FIXME: the following three seem to always be set in generate_event! + decoded_data_buffer = <<>>, + undecoded_packet_length = undefined, + encoded_data_buffer = EncDataRest}, + EncDataRest); + {bad_mac, Ssh1} -> + DisconnectMsg = + #ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, + description = "Bad mac", + language = ""}, + handle_disconnect(DisconnectMsg, State0#state{ssh_params=Ssh1}); + {error, {exceeds_max_size,PacketLen}} -> + DisconnectMsg = + #ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, + description = "Bad packet length " + ++ integer_to_list(PacketLen), + language = ""}, + handle_disconnect(DisconnectMsg, State0) + catch + _:_ -> + DisconnectMsg = + #ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, + description = "Bad packet", + language = ""}, + handle_disconnect(DisconnectMsg, State0) + end; + handle_info({CloseTag, _Socket}, _StateName, #state{transport_close_tag = CloseTag, ssh_params = #ssh{role = _Role, opts = _Opts}} = State) -> @@ -969,15 +1079,38 @@ handle_info({check_cache, _ , _}, #connection{channel_cache = Cache}} = State) -> {next_state, StateName, check_cache(State, Cache)}; -handle_info(UnexpectedMessage, StateName, #state{ssh_params = SshParams} = State) -> - Msg = lists:flatten(io_lib:format( - "Unexpected message '~p' received in state '~p'\n" - "Role: ~p\n" - "Peer: ~p\n" - "Local Address: ~p\n", [UnexpectedMessage, StateName, - SshParams#ssh.role, SshParams#ssh.peer, - proplists:get_value(address, SshParams#ssh.opts)])), - error_logger:info_report(Msg), +handle_info(UnexpectedMessage, StateName, #state{opts = Opts, + ssh_params = SshParams} = State) -> + case unexpected_fun(UnexpectedMessage, Opts, SshParams) of + report -> + Msg = lists:flatten( + io_lib:format( + "Unexpected message '~p' received in state '~p'\n" + "Role: ~p\n" + "Peer: ~p\n" + "Local Address: ~p\n", [UnexpectedMessage, StateName, + SshParams#ssh.role, SshParams#ssh.peer, + proplists:get_value(address, SshParams#ssh.opts)])), + error_logger:info_report(Msg); + + skip -> + ok; + + Other -> + Msg = lists:flatten( + io_lib:format("Call to fun in 'unexpectedfun' failed:~n" + "Return: ~p\n" + "Message: ~p\n" + "Role: ~p\n" + "Peer: ~p\n" + "Local Address: ~p\n", [Other, UnexpectedMessage, + SshParams#ssh.role, + element(2,SshParams#ssh.peer), + proplists:get_value(address, SshParams#ssh.opts)] + )), + + error_logger:error_report(Msg) + end, {next_state, StateName, State}. %%-------------------------------------------------------------------- @@ -986,7 +1119,7 @@ handle_info(UnexpectedMessage, StateName, #state{ssh_params = SshParams} = State terminate(normal, _, #state{transport_cb = Transport, connection_state = Connection, socket = Socket}) -> - terminate_subsytem(Connection), + terminate_subsystem(Connection), (catch Transport:close(Socket)), ok; @@ -1015,7 +1148,7 @@ terminate({shutdown, _}, StateName, State) -> terminate(Reason, StateName, #state{ssh_params = Ssh0, starter = _Pid, connection_state = Connection} = State) -> - terminate_subsytem(Connection), + terminate_subsystem(Connection), log_error(Reason), DisconnectMsg = #ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, @@ -1026,10 +1159,10 @@ terminate(Reason, StateName, #state{ssh_params = Ssh0, starter = _Pid, terminate(normal, StateName, State#state{ssh_params = Ssh}). -terminate_subsytem(#connection{system_supervisor = SysSup, +terminate_subsystem(#connection{system_supervisor = SysSup, sub_system_supervisor = SubSysSup}) when is_pid(SubSysSup) -> ssh_system_sup:stop_subsystem(SysSup, SubSysSup); -terminate_subsytem(_) -> +terminate_subsystem(_) -> ok. format_status(normal, [_, State]) -> @@ -1129,13 +1262,16 @@ init_ssh(client = Role, Vsn, Version, Options, Socket) -> opts = Options, userauth_supported_methods = AuthMethods, peer = {PeerName, PeerAddr}, - available_host_keys = supported_host_keys(Role, KeyCb, Options) + available_host_keys = supported_host_keys(Role, KeyCb, Options), + random_length_padding = proplists:get_value(max_random_length_padding, + Options, + (#ssh{})#ssh.random_length_padding) }; init_ssh(server = Role, Vsn, Version, Options, Socket) -> - AuthMethods = proplists:get_value(auth_methods, Options, ?SUPPORTED_AUTH_METHODS), + AuthMethodsAsList = string:tokens(AuthMethods, ","), {ok, PeerAddr} = inet:peername(Socket), KeyCb = proplists:get_value(key_cb, Options, ssh_file), @@ -1146,60 +1282,45 @@ init_ssh(server = Role, Vsn, Version, Options, Socket) -> io_cb = proplists:get_value(io_cb, Options, ssh_io), opts = Options, userauth_supported_methods = AuthMethods, + userauth_methods = AuthMethodsAsList, + kb_tries_left = 3, peer = {undefined, PeerAddr}, - available_host_keys = supported_host_keys(Role, KeyCb, Options) + available_host_keys = supported_host_keys(Role, KeyCb, Options), + random_length_padding = proplists:get_value(max_random_length_padding, + Options, + (#ssh{})#ssh.random_length_padding) }. supported_host_keys(client, _, Options) -> try - case extract_algs(proplists:get_value(pref_public_key_algs, Options, false), []) of - false -> - ["ssh-rsa", "ssh-dss"]; - Algs -> - Algs + case proplists:get_value(public_key, + proplists:get_value(preferred_algorithms,Options,[]) + ) of + undefined -> + ssh_transport:default_algorithms(public_key); + L -> + L -- (L--ssh_transport:default_algorithms(public_key)) end + of + [] -> + {stop, {shutdown, "No public key algs"}}; + Algs -> + [atom_to_list(A) || A<-Algs] catch exit:Reason -> {stop, {shutdown, Reason}} end; supported_host_keys(server, KeyCb, Options) -> - lists:foldl(fun(Type, Acc) -> - case available_host_key(KeyCb, Type, Options) of - {error, _} -> - Acc; - Alg -> - [Alg | Acc] - end - end, [], - %% Prefered alg last so no need to reverse - ["ssh-dss", "ssh-rsa"]). -extract_algs(false, _) -> - false; -extract_algs([],[]) -> - false; -extract_algs([], NewList) -> - lists:reverse(NewList); -extract_algs([H|T], NewList) -> - case H of - 'ssh-dss' -> - extract_algs(T, ["ssh-dss"|NewList]); - 'ssh-rsa' -> - extract_algs(T, ["ssh-rsa"|NewList]) - end. -available_host_key(KeyCb, "ssh-dss"= Alg, Opts) -> - case KeyCb:host_key('ssh-dss', Opts) of - {ok, _} -> - Alg; - Other -> - Other - end; -available_host_key(KeyCb, "ssh-rsa" = Alg, Opts) -> - case KeyCb:host_key('ssh-rsa', Opts) of - {ok, _} -> - Alg; - Other -> - Other - end. + [atom_to_list(A) || A <- proplists:get_value(public_key, + proplists:get_value(preferred_algorithms,Options,[]), + ssh_transport:default_algorithms(public_key) + ), + available_host_key(KeyCb, A, Options) + ]. + +%% Alg :: atom() +available_host_key(KeyCb, Alg, Opts) -> + element(1, catch KeyCb:host_key(Alg, Opts)) == ok. send_msg(Msg, #state{socket = Socket, transport_cb = Transport}) -> Transport:send(Socket, Msg). @@ -1257,7 +1378,7 @@ event(Event, StateName, State) -> handle_disconnect(DisconnectMsg, State); throw:{ErrorToDisplay, #ssh_msg_disconnect{} = DisconnectMsg} -> handle_disconnect(DisconnectMsg, State, ErrorToDisplay); - _:_ -> + _C:_Error -> handle_disconnect(#ssh_msg_disconnect{code = error_code(StateName), description = "Invalid state", language = "en"}, State) @@ -1273,7 +1394,6 @@ generate_event(<<?BYTE(Byte), _/binary>> = Msg, StateName, #state{ role = Role, starter = User, - opts = Opts, renegotiate = Renegotiation, connection_state = Connection0} = State0, EncData) when Byte == ?SSH_MSG_GLOBAL_REQUEST; @@ -1290,41 +1410,57 @@ generate_event(<<?BYTE(Byte), _/binary>> = Msg, StateName, Byte == ?SSH_MSG_CHANNEL_REQUEST; Byte == ?SSH_MSG_CHANNEL_SUCCESS; Byte == ?SSH_MSG_CHANNEL_FAILURE -> - ConnectionMsg = ssh_message:decode(Msg), - State1 = generate_event_new_state(State0, EncData), - try ssh_connection:handle_msg(ConnectionMsg, Connection0, Role) of - {{replies, Replies}, Connection} -> - State = send_replies(Replies, State1#state{connection_state = Connection}), - {next_state, StateName, next_packet(State)}; - {noreply, Connection} -> - {next_state, StateName, next_packet(State1#state{connection_state = Connection})}; - {disconnect, {_, Reason}, {{replies, Replies}, Connection}} when - Role == client andalso ((StateName =/= connected) and (not Renegotiation)) -> - State = send_replies(Replies, State1#state{connection_state = Connection}), - User ! {self(), not_connected, Reason}, - {stop, {shutdown, normal}, - next_packet(State#state{connection_state = Connection})}; - {disconnect, Reason, {{replies, Replies}, Connection}} -> - State = send_replies(Replies, State1#state{connection_state = Connection}), - SSHOpts = proplists:get_value(ssh_opts, Opts), - disconnect_fun(Reason, SSHOpts), - {stop, {shutdown, normal}, State#state{connection_state = Connection}} + try + ssh_message:decode(Msg) + of + ConnectionMsg -> + State1 = generate_event_new_state(State0, EncData), + try ssh_connection:handle_msg(ConnectionMsg, Connection0, Role) of + {{replies, Replies0}, Connection} -> + if StateName == connected -> + Replies = Replies0, + State2 = State1; + true -> + {ConnReplies, Replies} = + lists:splitwith(fun not_connected_filter/1, Replies0), + Q = State1#state.event_queue ++ ConnReplies, + State2 = State1#state{ event_queue = Q } + end, + State = send_replies(Replies, State2#state{connection_state = Connection}), + {next_state, StateName, next_packet(State)}; + {noreply, Connection} -> + {next_state, StateName, next_packet(State1#state{connection_state = Connection})}; + {disconnect, {_, Reason}, {{replies, Replies}, Connection}} when + Role == client andalso ((StateName =/= connected) and (not Renegotiation)) -> + State = send_replies(Replies, State1#state{connection_state = Connection}), + User ! {self(), not_connected, Reason}, + {stop, {shutdown, normal}, + next_packet(State#state{connection_state = Connection})}; + {disconnect, _Reason, {{replies, Replies}, Connection}} -> + State = send_replies(Replies, State1#state{connection_state = Connection}), + {stop, {shutdown, normal}, State#state{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", + language = "en"}, Connection0, Role), + State = send_replies(Replies, State1#state{connection_state = Connection}), + {stop, {shutdown, Error}, State#state{connection_state = Connection}} + end + catch - _:Error -> - {disconnect, Reason, {{replies, Replies}, Connection}} = - ssh_connection:handle_msg( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, - description = "Internal error", - language = "en"}, Connection0, Role), - State = send_replies(Replies, State1#state{connection_state = Connection}), - SSHOpts = proplists:get_value(ssh_opts, Opts), - disconnect_fun(Reason, SSHOpts), - {stop, {shutdown, Error}, State#state{connection_state = Connection}} + _:_ -> + handle_disconnect( + #ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, + description = "Bad packet received", + language = ""}, State0) end; generate_event(Msg, StateName, State0, EncData) -> try - Event = ssh_message:decode(Msg), + Event = ssh_message:decode(set_prefix_if_trouble(Msg,State0)), State = generate_event_new_state(State0, EncData), case Event of #ssh_msg_kexinit{} -> @@ -1334,7 +1470,7 @@ generate_event(Msg, StateName, State0, EncData) -> event(Event, StateName, State) end catch - _:_ -> + _C:_E -> DisconnectMsg = #ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, description = "Encountered unexpected input", @@ -1343,6 +1479,26 @@ generate_event(Msg, StateName, State0, EncData) -> end. +set_prefix_if_trouble(Msg = <<?BYTE(Op),_/binary>>, #state{ssh_params=SshParams}) + when Op == 30; + Op == 31 + -> + case catch atom_to_list(kex(SshParams)) of + "ecdh-sha2-" ++ _ -> + <<"ecdh",Msg/binary>>; + "diffie-hellman-group-exchange-" ++ _ -> + <<"dh_gex",Msg/binary>>; + "diffie-hellman-group" ++ _ -> + <<"dh",Msg/binary>>; + _ -> + Msg + end; +set_prefix_if_trouble(Msg, _) -> + Msg. + +kex(#ssh{algorithms=#alg{kex=Kex}}) -> Kex; +kex(_) -> undefined. + handle_request(ChannelPid, ChannelId, Type, Data, WantReply, From, #state{connection_state = @@ -1437,6 +1593,7 @@ new_channel_id(#state{connection_state = #connection{channel_id_seed = Id} = = State) -> {Id, State#state{connection_state = Connection#connection{channel_id_seed = Id + 1}}}. + generate_event_new_state(#state{ssh_params = #ssh{recv_sequence = SeqNum0} = Ssh} = State, EncData) -> @@ -1467,66 +1624,43 @@ next_packet(#state{socket = Socket} = State) -> State. after_new_keys(#state{renegotiate = true} = State) -> - {connected, State#state{renegotiate = false}}; + State1 = State#state{renegotiate = false, event_queue = []}, + lists:foldr(fun after_new_keys_events/2, {next_state, connected, State1}, State#state.event_queue); after_new_keys(#state{renegotiate = false, ssh_params = #ssh{role = client} = Ssh0} = State) -> {Msg, Ssh} = ssh_auth:service_request_msg(Ssh0), send_msg(Msg, State), - {userauth, State#state{ssh_params = Ssh}}; + {next_state, service_request, State#state{ssh_params = Ssh}}; after_new_keys(#state{renegotiate = false, ssh_params = #ssh{role = server}} = State) -> - {userauth, State}. - -handle_ssh_packet_data(RemainingSshPacketLen, DecData, EncData, StateName, - State) -> - EncSize = size(EncData), - case RemainingSshPacketLen > EncSize of - true -> - {next_state, StateName, - next_packet(State#state{decoded_data_buffer = DecData, - encoded_data_buffer = EncData, - undecoded_packet_length = - RemainingSshPacketLen})}; - false -> - handle_ssh_packet(RemainingSshPacketLen, StateName, - State#state{decoded_data_buffer = DecData, - encoded_data_buffer = EncData}) - - end. - -handle_ssh_packet(Length, StateName, #state{decoded_data_buffer = DecData0, - encoded_data_buffer = EncData0, - ssh_params = Ssh0, - transport_protocol = _Protocol, - socket = _Socket} = State0) -> - try - {Ssh1, DecData, EncData, Mac} = - ssh_transport:unpack(EncData0, Length, Ssh0), - SshPacket = <<DecData0/binary, DecData/binary>>, - case ssh_transport:is_valid_mac(Mac, SshPacket, Ssh1) of - true -> - PacketData = ssh_transport:msg_data(SshPacket), - {Ssh1, Msg} = ssh_transport:decompress(Ssh1, PacketData), - generate_event(Msg, StateName, - State0#state{ssh_params = Ssh1, - %% Important to be set for - %% next_packet - decoded_data_buffer = <<>>}, - EncData); - false -> - DisconnectMsg = - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = "Bad mac", - language = "en"}, - handle_disconnect(DisconnectMsg, State0) - end - catch _:_ -> - Disconnect = - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = "Bad input", - language = "en"}, - handle_disconnect(Disconnect, State0) - end. + {next_state, service_request, State}. + +after_new_keys_events({sync, _Event, From}, {stop, _Reason, _StateData}=Terminator) -> + gen_fsm:reply(From, {error, closed}), + Terminator; +after_new_keys_events(_, {stop, _Reason, _StateData}=Terminator) -> + Terminator; +after_new_keys_events({sync, Event, From}, {next_state, StateName, StateData}) -> + case handle_sync_event(Event, From, StateName, StateData) of + {reply, Reply, NextStateName, NewStateData} -> + gen_fsm:reply(From, Reply), + {next_state, NextStateName, NewStateData}; + {next_state, NextStateName, NewStateData}-> + {next_state, NextStateName, NewStateData}; + {stop, Reason, Reply, NewStateData} -> + gen_fsm:reply(From, Reply), + {stop, Reason, NewStateData} + end; +after_new_keys_events({event, Event}, {next_state, StateName, StateData}) -> + case handle_event(Event, StateName, StateData) of + {next_state, NextStateName, NewStateData}-> + {next_state, NextStateName, NewStateData}; + {stop, Reason, NewStateData} -> + {stop, Reason, NewStateData} + end; +after_new_keys_events({connection_reply, _Data} = Reply, {StateName, State}) -> + NewState = send_replies([Reply], State), + {next_state, StateName, NewState}. handle_disconnect(DisconnectMsg, State) -> @@ -1537,12 +1671,14 @@ handle_disconnect(#ssh_msg_disconnect{} = DisconnectMsg, State, Error) -> handle_disconnect(Type, #ssh_msg_disconnect{description = Desc} = Msg, #state{connection_state = Connection0, role = Role} = State0) -> {disconnect, _, {{replies, Replies}, Connection}} = ssh_connection:handle_msg(Msg, Connection0, Role), State = send_replies(disconnect_replies(Type, Msg, Replies), State0), + disconnect_fun(Desc, State#state.opts), {stop, {shutdown, Desc}, State#state{connection_state = Connection}}. handle_disconnect(Type, #ssh_msg_disconnect{description = Desc} = Msg, #state{connection_state = Connection0, role = Role} = State0, ErrorMsg) -> {disconnect, _, {{replies, Replies}, Connection}} = ssh_connection:handle_msg(Msg, Connection0, Role), State = send_replies(disconnect_replies(Type, Msg, Replies), State0), + disconnect_fun(Desc, State#state.opts), {stop, {shutdown, {Desc, ErrorMsg}}, State#state{connection_state = Connection}}. disconnect_replies(own, Msg, Replies) -> @@ -1636,6 +1772,11 @@ log_error(Reason) -> error_logger:error_report(Report), "Internal error". +not_connected_filter({connection_reply, _Data}) -> + true; +not_connected_filter(_) -> + false. + send_replies([], State) -> State; send_replies([{connection_reply, Data} | Rest], #state{ssh_params = Ssh0} = State) -> @@ -1656,6 +1797,8 @@ send_reply({flow_control, Cache, Channel, From, Msg}) -> send_reply({flow_control, From, Msg}) -> gen_fsm:reply(From, Msg). +disconnect_fun({disconnect,Msg}, Opts) -> + disconnect_fun(Msg, Opts); disconnect_fun(_, undefined) -> ok; disconnect_fun(Reason, Opts) -> @@ -1666,6 +1809,15 @@ disconnect_fun(Reason, Opts) -> catch Fun(Reason) end. +unexpected_fun(UnexpectedMessage, Opts, #ssh{peer={_,Peer}}) -> + case proplists:get_value(unexpectedfun, Opts) of + undefined -> + report; + Fun -> + catch Fun(UnexpectedMessage, Peer) + end. + + check_cache(#state{opts = Opts} = State, Cache) -> %% Check the number of entries in Cache case proplists:get_value(size, ets:info(Cache)) of diff --git a/lib/ssh/src/ssh_connection_sup.erl b/lib/ssh/src/ssh_connection_sup.erl index c5abc8f23b..e8d0d49668 100644 --- a/lib/ssh/src/ssh_connection_sup.erl +++ b/lib/ssh/src/ssh_connection_sup.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_daemon_channel.erl b/lib/ssh/src/ssh_daemon_channel.erl index ab3efbcaff..560e8246de 100644 --- a/lib/ssh/src/ssh_daemon_channel.erl +++ b/lib/ssh/src/ssh_daemon_channel.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_file.erl b/lib/ssh/src/ssh_file.erl index 5692138a8a..3e066c453d 100644 --- a/lib/ssh/src/ssh_file.erl +++ b/lib/ssh/src/ssh_file.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2005-2012. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -51,8 +52,20 @@ host_key(Algorithm, Opts) -> %% so probably we could hardcod Password = ignore, but %% we keep it as an undocumented option for now. Password = proplists:get_value(identity_pass_phrase(Algorithm), Opts, ignore), - decode(File, Password). - + case decode(File, Password) of + {ok,Key} -> + case {Key,Algorithm} of + {#'RSAPrivateKey'{}, 'ssh-rsa'} -> {ok,Key}; + {#'DSAPrivateKey'{}, 'ssh-dss'} -> {ok,Key}; + {#'ECPrivateKey'{parameters = {namedCurve, ?'secp256r1'}}, 'ecdsa-sha2-nistp256'} -> {ok,Key}; + {#'ECPrivateKey'{parameters = {namedCurve, ?'secp384r1'}}, 'ecdsa-sha2-nistp384'} -> {ok,Key}; + {#'ECPrivateKey'{parameters = {namedCurve, ?'secp521r1'}}, 'ecdsa-sha2-nistp521'} -> {ok,Key}; + _ -> + {error,bad_keytype_in_file} + end; + Other -> + Other + end. is_auth_key(Key, User,Opts) -> case lookup_user_key(Key, User, Opts) of @@ -80,16 +93,15 @@ user_key(Algorithm, Opts) -> %% Internal functions %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -file_base_name('ssh-rsa') -> - "ssh_host_rsa_key"; -file_base_name('ssh-dss') -> - "ssh_host_dsa_key"; -file_base_name(_) -> - "ssh_host_key". +file_base_name('ssh-rsa' ) -> "ssh_host_rsa_key"; +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_host_key". decode(File, Password) -> - try - {ok, decode_ssh_file(read_ssh_file(File), Password)} + try {ok, decode_ssh_file(read_ssh_file(File), Password)} catch throw:Reason -> {error, Reason}; @@ -209,29 +221,32 @@ do_lookup_host_key(KeyToMatch, Host, Alg, Opts) -> {ok, Fd} -> Res = lookup_host_key_fd(Fd, KeyToMatch, Host, Alg), file:close(Fd), - {ok, Res}; - {error, enoent} -> {error, not_found}; - Error -> Error + Res; + {error, enoent} -> + {error, not_found}; + Error -> + Error end. -identity_key_filename('ssh-dss') -> - "id_dsa"; -identity_key_filename('ssh-rsa') -> - "id_rsa". - -identity_pass_phrase("ssh-dss") -> - dsa_pass_phrase; -identity_pass_phrase('ssh-dss') -> - dsa_pass_phrase; -identity_pass_phrase('ssh-rsa') -> - rsa_pass_phrase; -identity_pass_phrase("ssh-rsa") -> - rsa_pass_phrase. - +identity_key_filename('ssh-dss' ) -> "id_dsa"; +identity_key_filename('ssh-rsa' ) -> "id_rsa"; +identity_key_filename('ecdsa-sha2-nistp256') -> "id_ecdsa"; +identity_key_filename('ecdsa-sha2-nistp384') -> "id_ecdsa"; +identity_key_filename('ecdsa-sha2-nistp521') -> "id_ecdsa". + +identity_pass_phrase("ssh-dss" ) -> dsa_pass_phrase; +identity_pass_phrase("ssh-rsa" ) -> rsa_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)). + lookup_host_key_fd(Fd, KeyToMatch, Host, KeyType) -> case io:get_line(Fd, '') of eof -> {error, not_found}; + {error,Error} -> + %% Rare... For example NFS errors + {error,Error}; Line -> case ssh_decode_line(Line, known_hosts) of [{Key, Attributes}] -> @@ -252,7 +267,7 @@ handle_host(Fd, KeyToMatch, Host, HostList, Key, KeyType) -> Host1 = host_name(Host), case lists:member(Host1, HostList) andalso key_match(Key, KeyType) of true when KeyToMatch == Key -> - Key; + {ok,Key}; _ -> lookup_host_key_fd(Fd, KeyToMatch, Host, KeyType) end. @@ -266,6 +281,13 @@ key_match(#'RSAPublicKey'{}, 'ssh-rsa') -> true; key_match({_, #'Dss-Parms'{}}, 'ssh-dss') -> true; +key_match({#'ECPoint'{},{namedCurve,Curve}}, Alg) -> + case atom_to_list(Alg) of + "ecdsa-sha2-"++IdS -> + Curve == public_key:ssh_curvename2oid(list_to_binary(IdS)); + _ -> + false + end; key_match(_, _) -> false. @@ -292,6 +314,9 @@ lookup_user_key_fd(Fd, Key) -> case io:get_line(Fd, '') of eof -> {error, not_found}; + {error,Error} -> + %% Rare... For example NFS errors + {error,Error}; Line -> case ssh_decode_line(Line, auth_keys) of [{AuthKey, _}] -> @@ -311,8 +336,18 @@ is_auth_key(Key, Key) -> is_auth_key(_,_) -> false. -default_user_dir()-> - {ok,[[Home|_]]} = init:get_argument(home), + +default_user_dir() -> + try + default_user_dir(os:getenv("HOME")) + catch + _:_ -> + default_user_dir(init:get_argument(home)) + end. + +default_user_dir({ok,[[Home|_]]}) -> + default_user_dir(Home); +default_user_dir(Home) when is_list(Home) -> UserDir = filename:join(Home, ".ssh"), ok = filelib:ensure_dir(filename:join(UserDir, "dummy")), {ok,Info} = file:read_file_info(UserDir), diff --git a/lib/ssh/src/ssh_info.erl b/lib/ssh/src/ssh_info.erl index 30df32c4fd..4e6e25bc70 100644 --- a/lib/ssh/src/ssh_info.erl +++ b/lib/ssh/src/ssh_info.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2015. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -79,7 +80,7 @@ print_clients(D) -> print_client(D, {undefined,Pid,supervisor,[ssh_connection_handler]}) -> {{Local,Remote},_Str} = ssh_connection_handler:get_print_info(Pid), - io:format(D, " Local=~s Remote=~s~n",[fmt_host_port(Local),fmt_host_port(Remote)]); + io:format(D, " Local=~s Remote=~s ConnectionRef=~p~n",[fmt_host_port(Local),fmt_host_port(Remote),Pid]); print_client(D, Other) -> io:format(D, " [[Other 1: ~p]]~n",[Other]). @@ -134,10 +135,11 @@ walk_sups(D, StartPid) -> io:format(D, "Start at ~p, ~s.~n",[StartPid,dead_or_alive(StartPid)]), walk_sups(D, children(StartPid), _Indent=?inc(0)). -walk_sups(D, [H={_,Pid,SupOrWorker,_}|T], Indent) -> +walk_sups(D, [H={_,Pid,_,_}|T], Indent) -> indent(D, Indent), io:format(D, '~200p ~p is ~s~n',[H,Pid,dead_or_alive(Pid)]), - case SupOrWorker of - supervisor -> walk_sups(D, children(Pid), ?inc(Indent)); + case H of + {_,_,supervisor,[ssh_connection_handler]} -> ok; + {_,Pid,supervisor,_} -> walk_sups(D, children(Pid), ?inc(Indent)); _ -> ok end, walk_sups(D, T, Indent); @@ -187,7 +189,7 @@ line(D, Len, Char) -> datetime() -> - {{YYYY,MM,DD}, {H,M,S}} = calendar:now_to_universal_time(now()), + {{YYYY,MM,DD}, {H,M,S}} = calendar:now_to_universal_time(erlang:timestamp()), lists:flatten(io_lib:format('~4w-~2..0w-~2..0w ~2..0w:~2..0w:~2..0w UTC',[YYYY,MM,DD, H,M,S])). diff --git a/lib/ssh/src/ssh_io.erl b/lib/ssh/src/ssh_io.erl index 97e2dee27a..a5e627fdb3 100644 --- a/lib/ssh/src/ssh_io.erl +++ b/lib/ssh/src/ssh_io.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2005-2014. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_math.erl b/lib/ssh/src/ssh_math.erl deleted file mode 100644 index 569c1cb58d..0000000000 --- a/lib/ssh/src/ssh_math.erl +++ /dev/null @@ -1,41 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2005-2013. All Rights Reserved. -%% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. -%% -%% %CopyrightEnd% -%% - -%% - -%%% Description: SSH math utilities - --module(ssh_math). - --export([ipow/3]). - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% -%% INTEGER utils -%% -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% - -%% calculate A^B mod M -ipow(A, B, M) when M > 0, B >= 0 -> - crypto:bytes_to_integer(crypto:mod_pow(A, B, M)). - - - - - diff --git a/lib/ssh/src/ssh_message.erl b/lib/ssh/src/ssh_message.erl index 66e7717095..b6c4496be2 100644 --- a/lib/ssh/src/ssh_message.erl +++ b/lib/ssh/src/ssh_message.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2013-2014. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -29,7 +30,7 @@ -include("ssh_auth.hrl"). -include("ssh_transport.hrl"). --export([encode/1, decode/1, encode_host_key/1, decode_keyboard_interactive_prompts/2]). +-export([encode/1, decode/1, decode_keyboard_interactive_prompts/2]). encode(#ssh_msg_global_request{ name = Name, @@ -226,8 +227,8 @@ encode(#ssh_msg_kexdh_reply{ f = F, h_sig = Signature }) -> - EncKey = encode_host_key(Key), - EncSign = encode_sign(Key, Signature), + EncKey = public_key:ssh_encode(Key, ssh2_pubkey), + EncSign = encode_signature(Key, Signature), ssh_bits:encode([?SSH_MSG_KEXDH_REPLY, EncKey, F, EncSign], [byte, binary, mpint, binary]); encode(#ssh_msg_kex_dh_gex_request{ @@ -236,7 +237,7 @@ encode(#ssh_msg_kex_dh_gex_request{ max = Max }) -> ssh_bits:encode([?SSH_MSG_KEX_DH_GEX_REQUEST, Min, N, Max], - [byte, uint32, uint32, uint32, uint32]); + [byte, uint32, uint32, uint32]); encode(#ssh_msg_kex_dh_gex_request_old{n = N}) -> ssh_bits:encode([?SSH_MSG_KEX_DH_GEX_REQUEST_OLD, N], [byte, uint32]); @@ -254,9 +255,17 @@ encode(#ssh_msg_kex_dh_gex_reply{ f = F, h_sig = Signature }) -> - EncKey = encode_host_key(Key), - EncSign = encode_sign(Key, Signature), - ssh_bits:encode([?SSH_MSG_KEXDH_REPLY, EncKey, F, EncSign], [byte, binary, mpint, binary]); + EncKey = public_key:ssh_encode(Key, ssh2_pubkey), + EncSign = encode_signature(Key, Signature), + ssh_bits:encode([?SSH_MSG_KEX_DH_GEX_REPLY, EncKey, F, EncSign], [byte, binary, mpint, binary]); + +encode(#ssh_msg_kex_ecdh_init{q_c = Q_c}) -> + ssh_bits:encode([?SSH_MSG_KEX_ECDH_INIT, Q_c], [byte, mpint]); + +encode(#ssh_msg_kex_ecdh_reply{public_host_key = Key, q_s = Q_s, h_sig = Sign}) -> + EncKey = public_key:ssh_encode(Key, ssh2_pubkey), + EncSign = encode_signature(Key, Sign), + ssh_bits:encode([?SSH_MSG_KEX_ECDH_REPLY, EncKey, Q_s, EncSign], [byte, binary, mpint, binary]); encode(#ssh_msg_ignore{data = Data}) -> ssh_bits:encode([?SSH_MSG_IGNORE, Data], [byte, string]); @@ -271,8 +280,7 @@ encode(#ssh_msg_debug{always_display = Bool, %% Connection Messages -decode(<<?BYTE(?SSH_MSG_GLOBAL_REQUEST), ?UINT32(Len), Name:Len/binary, - ?BYTE(Bool), Data/binary>>) -> +decode(<<?BYTE(?SSH_MSG_GLOBAL_REQUEST), ?DEC_BIN(Name,__0), ?BYTE(Bool), Data/binary>>) -> #ssh_msg_global_request{ name = Name, want_reply = erl_boolean(Bool), @@ -283,8 +291,7 @@ decode(<<?BYTE(?SSH_MSG_REQUEST_SUCCESS), Data/binary>>) -> decode(<<?BYTE(?SSH_MSG_REQUEST_FAILURE)>>) -> #ssh_msg_request_failure{}; decode(<<?BYTE(?SSH_MSG_CHANNEL_OPEN), - ?UINT32(Len), Type:Len/binary, - ?UINT32(Sender), ?UINT32(Window), ?UINT32(Max), + ?DEC_BIN(Type,__0), ?UINT32(Sender), ?UINT32(Window), ?UINT32(Max), Data/binary>>) -> #ssh_msg_channel_open{ channel_type = binary_to_list(Type), @@ -304,7 +311,7 @@ decode(<<?BYTE(?SSH_MSG_CHANNEL_OPEN_CONFIRMATION), ?UINT32(Recipient), ?UINT32( data = Data }; decode(<<?BYTE(?SSH_MSG_CHANNEL_OPEN_FAILURE), ?UINT32(Recipient), ?UINT32(Reason), - ?UINT32(Len0), Desc:Len0/binary, ?UINT32(Len1), Lang:Len1/binary >>) -> + ?DEC_BIN(Desc,__0), ?DEC_BIN(Lang,__1) >> ) -> #ssh_msg_channel_open_failure{ recipient_channel = Recipient, reason = Reason, @@ -317,13 +324,13 @@ decode(<<?BYTE(?SSH_MSG_CHANNEL_WINDOW_ADJUST), ?UINT32(Recipient), ?UINT32(Byte bytes_to_add = Bytes }; -decode(<<?BYTE(?SSH_MSG_CHANNEL_DATA), ?UINT32(Recipient), ?UINT32(Len), Data:Len/binary>>) -> +decode(<<?BYTE(?SSH_MSG_CHANNEL_DATA), ?UINT32(Recipient), ?DEC_BIN(Data,__0)>>) -> #ssh_msg_channel_data{ recipient_channel = Recipient, data = Data }; decode(<<?BYTE(?SSH_MSG_CHANNEL_EXTENDED_DATA), ?UINT32(Recipient), - ?UINT32(DataType), ?UINT32(Len), Data:Len/binary>>) -> + ?UINT32(DataType), ?DEC_BIN(Data,__0)>>) -> #ssh_msg_channel_extended_data{ recipient_channel = Recipient, data_type_code = DataType, @@ -338,8 +345,7 @@ decode(<<?BYTE(?SSH_MSG_CHANNEL_CLOSE), ?UINT32(Recipient)>>) -> recipient_channel = Recipient }; decode(<<?BYTE(?SSH_MSG_CHANNEL_REQUEST), ?UINT32(Recipient), - ?UINT32(Len), RequestType:Len/binary, - ?BYTE(Bool), Data/binary>>) -> + ?DEC_BIN(RequestType,__0), ?BYTE(Bool), Data/binary>>) -> #ssh_msg_channel_request{ recipient_channel = Recipient, request_type = unicode:characters_to_list(RequestType), @@ -357,9 +363,7 @@ decode(<<?BYTE(?SSH_MSG_CHANNEL_FAILURE), ?UINT32(Recipient)>>) -> %%% Auth Messages decode(<<?BYTE(?SSH_MSG_USERAUTH_REQUEST), - ?UINT32(Len0), User:Len0/binary, - ?UINT32(Len1), Service:Len1/binary, - ?UINT32(Len2), Method:Len2/binary, + ?DEC_BIN(User,__0), ?DEC_BIN(Service,__1), ?DEC_BIN(Method,__2), Data/binary>>) -> #ssh_msg_userauth_request{ user = unicode:characters_to_list(User), @@ -369,7 +373,7 @@ decode(<<?BYTE(?SSH_MSG_USERAUTH_REQUEST), }; decode(<<?BYTE(?SSH_MSG_USERAUTH_FAILURE), - ?UINT32(Len0), Auths:Len0/binary, + ?DEC_BIN(Auths,__0), ?BYTE(Bool)>>) -> #ssh_msg_userauth_failure { authentications = unicode:characters_to_list(Auths), @@ -379,16 +383,14 @@ decode(<<?BYTE(?SSH_MSG_USERAUTH_FAILURE), decode(<<?BYTE(?SSH_MSG_USERAUTH_SUCCESS)>>) -> #ssh_msg_userauth_success{}; -decode(<<?BYTE(?SSH_MSG_USERAUTH_BANNER), - ?UINT32(Len0), Banner:Len0/binary, - ?UINT32(Len1), Lang:Len1/binary>>) -> +decode(<<?BYTE(?SSH_MSG_USERAUTH_BANNER), ?DEC_BIN(Banner,__0), ?DEC_BIN(Lang,__1) >>) -> #ssh_msg_userauth_banner{ message = Banner, language = Lang }; -decode(<<?BYTE(?SSH_MSG_USERAUTH_INFO_REQUEST), ?UINT32(Len0), Name:Len0/binary, - ?UINT32(Len1), Inst:Len1/binary, ?UINT32(Len2), Lang:Len2/binary, +decode(<<?BYTE(?SSH_MSG_USERAUTH_INFO_REQUEST), + ?DEC_BIN(Name,__0), ?DEC_BIN(Inst,__1), ?DEC_BIN(Lang,__2), ?UINT32(NumPromtps), Data/binary>>) -> #ssh_msg_userauth_info_request{ name = Name, @@ -398,15 +400,14 @@ decode(<<?BYTE(?SSH_MSG_USERAUTH_INFO_REQUEST), ?UINT32(Len0), Name:Len0/binary, data = Data}; %%% Unhandled message, also masked by same 1:st byte value as ?SSH_MSG_USERAUTH_INFO_REQUEST: -decode(<<?BYTE(?SSH_MSG_USERAUTH_PASSWD_CHANGEREQ), ?UINT32(Len0), Prompt:Len0/binary, - ?UINT32(Len1), Lang:Len1/binary>>) -> +decode(<<?BYTE(?SSH_MSG_USERAUTH_PASSWD_CHANGEREQ), ?DEC_BIN(Prompt,__0), ?DEC_BIN(Lang,__1) >>) -> #ssh_msg_userauth_passwd_changereq{ prompt = Prompt, languge = Lang }; %%% Unhandled message, also masked by same 1:st byte value as ?SSH_MSG_USERAUTH_INFO_REQUEST: -decode(<<?BYTE(?SSH_MSG_USERAUTH_PK_OK), ?UINT32(Len), Alg:Len/binary, KeyBlob/binary>>) -> +decode(<<?BYTE(?SSH_MSG_USERAUTH_PK_OK), ?DEC_BIN(Alg,__0), KeyBlob/binary>>) -> #ssh_msg_userauth_pk_ok{ algorithm_name = Alg, key_blob = KeyBlob @@ -421,47 +422,71 @@ decode(<<?BYTE(?SSH_MSG_USERAUTH_INFO_RESPONSE), ?UINT32(Num), Data/binary>>) -> decode(<<?BYTE(?SSH_MSG_KEXINIT), Cookie:128, Data/binary>>) -> decode_kex_init(Data, [Cookie, ssh_msg_kexinit], 10); -decode(<<?BYTE(?SSH_MSG_KEXDH_INIT), ?UINT32(Len), E:Len/binary>>) -> - #ssh_msg_kexdh_init{e = erlint(Len, E) +decode(<<"dh",?BYTE(?SSH_MSG_KEXDH_INIT), ?DEC_MPINT(E,__0)>>) -> + #ssh_msg_kexdh_init{e = E }; + +decode(<<"dh", ?BYTE(?SSH_MSG_KEXDH_REPLY), ?DEC_BIN(Key,__0), ?DEC_MPINT(F,__1), ?DEC_BIN(Hashsign,__2)>>) -> + #ssh_msg_kexdh_reply{ + public_host_key = public_key:ssh_decode(Key, ssh2_pubkey), + f = F, + h_sig = decode_signature(Hashsign) + }; + decode(<<?BYTE(?SSH_MSG_KEX_DH_GEX_REQUEST), ?UINT32(Min), ?UINT32(N), ?UINT32(Max)>>) -> #ssh_msg_kex_dh_gex_request{ min = Min, n = N, max = Max }; -decode(<<?BYTE(?SSH_MSG_KEX_DH_GEX_REQUEST_OLD), ?UINT32(N)>>) -> + +decode(<<"dh_gex",?BYTE(?SSH_MSG_KEX_DH_GEX_REQUEST_OLD), ?UINT32(N)>>) -> #ssh_msg_kex_dh_gex_request_old{ n = N }; -decode(<<?BYTE(?SSH_MSG_KEX_DH_GEX_GROUP), - ?UINT32(Len0), Prime:Len0/big-signed-integer-unit:8, - ?UINT32(Len1), Generator:Len1/big-signed-integer-unit:8>>) -> + +decode(<<"dh_gex",?BYTE(?SSH_MSG_KEX_DH_GEX_GROUP), ?DEC_MPINT(Prime,__0), ?DEC_MPINT(Generator,__1) >>) -> #ssh_msg_kex_dh_gex_group{ p = Prime, g = Generator }; -decode(<<?BYTE(?SSH_MSG_KEXDH_REPLY), ?UINT32(Len0), Key:Len0/binary, - ?UINT32(Len1), F:Len1/binary, - ?UINT32(Len2), Hashsign:Len2/binary>>) -> - #ssh_msg_kexdh_reply{ - public_host_key = decode_host_key(Key), - f = erlint(Len1, F), - h_sig = decode_sign(Hashsign) + +decode(<<?BYTE(?SSH_MSG_KEX_DH_GEX_INIT), ?DEC_MPINT(E,__0)>>) -> + #ssh_msg_kex_dh_gex_init{ + e = E + }; + +decode(<<?BYTE(?SSH_MSG_KEX_DH_GEX_REPLY), ?DEC_BIN(Key,__0), ?DEC_MPINT(F,__1), ?DEC_BIN(Hashsign,__2)>>) -> + #ssh_msg_kex_dh_gex_reply{ + public_host_key = public_key:ssh_decode(Key, ssh2_pubkey), + f = F, + h_sig = decode_signature(Hashsign) }; -decode(<<?SSH_MSG_SERVICE_REQUEST, ?UINT32(Len0), Service:Len0/binary>>) -> +decode(<<"ecdh",?BYTE(?SSH_MSG_KEX_ECDH_INIT), ?DEC_MPINT(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)>>) -> + #ssh_msg_kex_ecdh_reply{ + public_host_key = public_key:ssh_decode(Key, ssh2_pubkey), + q_s = Q_s, + h_sig = decode_signature(Sig) + }; + +decode(<<?SSH_MSG_SERVICE_REQUEST, ?DEC_BIN(Service,__0)>>) -> #ssh_msg_service_request{ name = unicode:characters_to_list(Service) }; -decode(<<?SSH_MSG_SERVICE_ACCEPT, ?UINT32(Len0), Service:Len0/binary>>) -> +decode(<<?SSH_MSG_SERVICE_ACCEPT, ?DEC_BIN(Service,__0)>>) -> #ssh_msg_service_accept{ name = unicode:characters_to_list(Service) }; -decode(<<?BYTE(?SSH_MSG_DISCONNECT), ?UINT32(Code), - ?UINT32(Len0), Desc:Len0/binary, ?UINT32(Len1), Lang:Len1/binary>>) -> +decode(<<?BYTE(?SSH_MSG_DISCONNECT), ?UINT32(Code), ?DEC_BIN(Desc,__0), ?DEC_BIN(Lang,__1)>>) -> #ssh_msg_disconnect{ code = Code, description = unicode:characters_to_list(Desc), @@ -469,8 +494,7 @@ decode(<<?BYTE(?SSH_MSG_DISCONNECT), ?UINT32(Code), }; %% Accept bad disconnects from ancient openssh clients that doesn't send language tag. Use english as a work-around. -decode(<<?BYTE(?SSH_MSG_DISCONNECT), ?UINT32(Code), - ?UINT32(Len0), Desc:Len0/binary>>) -> +decode(<<?BYTE(?SSH_MSG_DISCONNECT), ?UINT32(Code), ?DEC_BIN(Desc,__0)>>) -> #ssh_msg_disconnect{ code = Code, description = unicode:characters_to_list(Desc), @@ -480,21 +504,25 @@ decode(<<?BYTE(?SSH_MSG_DISCONNECT), ?UINT32(Code), decode(<<?SSH_MSG_NEWKEYS>>) -> #ssh_msg_newkeys{}; -decode(<<?BYTE(?SSH_MSG_IGNORE), ?UINT32(Len), Data:Len/binary>>) -> +decode(<<?BYTE(?SSH_MSG_IGNORE), ?DEC_BIN(Data,__0)>>) -> #ssh_msg_ignore{data = Data}; decode(<<?BYTE(?SSH_MSG_UNIMPLEMENTED), ?UINT32(Seq)>>) -> #ssh_msg_unimplemented{sequence = Seq}; -decode(<<?BYTE(?SSH_MSG_DEBUG), ?BYTE(Bool), ?UINT32(Len0), Msg:Len0/binary, - ?UINT32(Len1), Lang:Len1/binary>>) -> +decode(<<?BYTE(?SSH_MSG_DEBUG), ?BYTE(Bool), ?DEC_BIN(Msg,__0), ?DEC_BIN(Lang,__1)>>) -> #ssh_msg_debug{always_display = erl_boolean(Bool), message = Msg, language = Lang}. +%%%================================================================ +%%% +%%% Helper functions +%%% + decode_keyboard_interactive_prompts(<<>>, Acc) -> lists:reverse(Acc); -decode_keyboard_interactive_prompts(<<?UINT32(Len), Prompt:Len/binary, ?BYTE(Bool), Bin/binary>>, +decode_keyboard_interactive_prompts(<<?DEC_BIN(Prompt,__0), ?BYTE(Bool), Bin/binary>>, Acc) -> decode_keyboard_interactive_prompts(Bin, [{Prompt, erl_boolean(Bool)} | Acc]). @@ -510,45 +538,25 @@ decode_kex_init(<<?BYTE(Bool)>>, Acc, 0) -> %% See rfc 4253 7.1 X = 0, list_to_tuple(lists:reverse([X, erl_boolean(Bool) | Acc])); -decode_kex_init(<<?UINT32(Len), Data:Len/binary, Rest/binary>>, Acc, N) -> +decode_kex_init(<<?DEC_BIN(Data,__0), Rest/binary>>, Acc, N) -> Names = string:tokens(unicode:characters_to_list(Data), ","), decode_kex_init(Rest, [Names | Acc], N -1). -erlint(MPIntSize, MPIntValue) -> - Bits = MPIntSize * 8, - <<Integer:Bits/integer>> = MPIntValue, - Integer. -decode_sign(<<?UINT32(Len), _Alg:Len/binary, ?UINT32(_), Signature/binary>>) -> +%%%================================================================ +%%% +%%% Signature decode/encode +%%% + +decode_signature(<<?DEC_BIN(_Alg,__0), ?UINT32(_), Signature/binary>>) -> Signature. -decode_host_key(<<?UINT32(Len), Alg:Len/binary, Rest/binary>>) -> - decode_host_key(Alg, Rest). - -decode_host_key(<<"ssh-rsa">>, <<?UINT32(Len0), E:Len0/binary, - ?UINT32(Len1), N:Len1/binary>>) -> - #'RSAPublicKey'{publicExponent = erlint(Len0, E), - modulus = erlint(Len1, N)}; - -decode_host_key(<<"ssh-dss">>, - <<?UINT32(Len0), P:Len0/binary, - ?UINT32(Len1), Q:Len1/binary, - ?UINT32(Len2), G:Len2/binary, - ?UINT32(Len3), Y:Len3/binary>>) -> - {erlint(Len3, Y), #'Dss-Parms'{p = erlint(Len0, P), q = erlint(Len1, Q), - g = erlint(Len2, G)}}. - -encode_host_key(#'RSAPublicKey'{modulus = N, publicExponent = E}) -> - ssh_bits:encode(["ssh-rsa", E, N], [string, mpint, mpint]); -encode_host_key({Y, #'Dss-Parms'{p = P, q = Q, g = G}}) -> - ssh_bits:encode(["ssh-dss", P, Q, G, Y], - [string, mpint, mpint, mpint, mpint]); -encode_host_key(#'RSAPrivateKey'{modulus = N, publicExponent = E}) -> - ssh_bits:encode(["ssh-rsa", E, N], [string, mpint, mpint]); -encode_host_key(#'DSAPrivateKey'{y = Y, p = P, q = Q, g = G}) -> - ssh_bits:encode(["ssh-dss", P, Q, G, Y], - [string, mpint, mpint, mpint, mpint]). -encode_sign(#'RSAPrivateKey'{}, Signature) -> + +encode_signature(#'RSAPublicKey'{}, Signature) -> ssh_bits:encode(["ssh-rsa", Signature],[string, binary]); -encode_sign(#'DSAPrivateKey'{}, Signature) -> - ssh_bits:encode(["ssh-dss", Signature],[string, binary]). +encode_signature({_, #'Dss-Parms'{}}, Signature) -> + ssh_bits:encode(["ssh-dss", Signature],[string, binary]); +encode_signature({#'ECPoint'{}, {namedCurve,OID}}, Signature) -> + CurveName = public_key:oid2ssh_curvename(OID), + ssh_bits:encode([<<"ecdsa-sha2-",CurveName/binary>>, Signature], [binary,binary]). + diff --git a/lib/ssh/src/ssh_no_io.erl b/lib/ssh/src/ssh_no_io.erl index 825a0d4af5..e8d1afd0ed 100644 --- a/lib/ssh/src/ssh_no_io.erl +++ b/lib/ssh/src/ssh_no_io.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2005-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_server_key.erl b/lib/ssh/src/ssh_server_key.erl index 8140114990..4ab326374a 100644 --- a/lib/ssh/src/ssh_server_key.erl +++ b/lib/ssh/src/ssh_server_key.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2011-2012. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_server_key_api.erl b/lib/ssh/src/ssh_server_key_api.erl index 4fd660ecb5..7c05d82c03 100644 --- a/lib/ssh/src/ssh_server_key_api.erl +++ b/lib/ssh/src/ssh_server_key_api.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2011-2012. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_sftp.erl b/lib/ssh/src/ssh_sftp.erl index 613f8f25b2..dbacf730cc 100644 --- a/lib/ssh/src/ssh_sftp.erl +++ b/lib/ssh/src/ssh_sftp.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2005-2014. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -111,7 +112,7 @@ start_channel(Cm, Opts) when is_pid(Cm) -> TimeOut end; {error, Reason} -> - {error, Reason}; + {error, format_channel_start_error(Reason)}; ignore -> {error, ignore} end; @@ -136,7 +137,7 @@ start_channel(Host, Port, Opts) -> TimeOut end; {error, Reason} -> - {error, Reason}; + {error, format_channel_start_error(Reason)}; ignore -> {error, ignore} end; @@ -438,7 +439,7 @@ write_file(Pid, Name, List) -> write_file(Pid, Name, List, ?FILEOP_TIMEOUT). write_file(Pid, Name, List, FileOpTimeout) when is_list(List) -> - write_file(Pid, Name, unicode:characters_to_binary(List), FileOpTimeout); + write_file(Pid, Name, list_to_binary(List), FileOpTimeout); write_file(Pid, Name, Bin, FileOpTimeout) -> case open(Pid, Name, [write, binary], FileOpTimeout) of {ok, Handle} -> @@ -491,9 +492,9 @@ init([Cm, ChannelId, Options]) -> inf = new_inf(), opts = Options}}; failure -> - {stop, "server failed to start sftp subsystem"}; + {stop, {shutdown, "server failed to start sftp subsystem"}}; Error -> - {stop, Error} + {stop, {shutdown, Error}} end. %%-------------------------------------------------------------------- @@ -508,12 +509,12 @@ init([Cm, ChannelId, Options]) -> %%-------------------------------------------------------------------- handle_call({{timeout, infinity}, wait_for_version_negotiation}, From, #state{xf = #ssh_xfer{vsn = undefined} = Xf} = State) -> - {noreply, State#state{xf = Xf#ssh_xfer{vsn = From}}}; + {noreply, State#state{xf = Xf#ssh_xfer{vsn = {wait, From, undefined}}}}; handle_call({{timeout, Timeout}, wait_for_version_negotiation}, From, #state{xf = #ssh_xfer{vsn = undefined} = Xf} = State) -> - timer:send_after(Timeout, {timeout, undefined, From}), - {noreply, State#state{xf = Xf#ssh_xfer{vsn = From}}}; + TRef = erlang:send_after(Timeout, self(), {timeout, undefined, From}), + {noreply, State#state{xf = Xf#ssh_xfer{vsn = {wait, From, TRef}}}}; handle_call({_, wait_for_version_negotiation}, _, State) -> {reply, ok, State}; @@ -610,8 +611,7 @@ do_handle_call({pread,Async,Handle,At,Length}, From, State) -> fun({ok,Data}, State2) -> case get_mode(Handle, State2) of binary -> {{ok,Data}, State2}; - text -> - {{ok,unicode:characters_to_list(Data)}, State2} + text -> {{ok,binary_to_list(Data)}, State2} end; (Rep, State2) -> {Rep, State2} @@ -865,7 +865,12 @@ do_handle_reply(#state{xf = Xf} = State, case Xf#ssh_xfer.vsn of undefined -> ok; - From -> + {wait, From, TRef} -> + if is_reference(TRef) -> + erlang:cancel_timer(TRef); + true -> + ok + end, ssh_channel:reply(From, ok) end, State#state{xf = Xf#ssh_xfer{vsn = Version, ext = Ext}, rep_buf = Rest}; @@ -1412,3 +1417,8 @@ open_buf1(Pid, BufInfo0, FileOpTimeout, CryptoState, ChunkSize) -> BufHandle = make_ref(), call(Pid, {put_bufinf,BufHandle,BufInfo}, FileOpTimeout), {ok,BufHandle}. + +format_channel_start_error({shutdown, Reason}) -> + Reason; +format_channel_start_error(Reason) -> + Reason. diff --git a/lib/ssh/src/ssh_sftpd.erl b/lib/ssh/src/ssh_sftpd.erl index 04ae6b11e2..819cba697e 100644 --- a/lib/ssh/src/ssh_sftpd.erl +++ b/lib/ssh/src/ssh_sftpd.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2005-2015. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -29,6 +30,7 @@ -include("ssh.hrl"). -include("ssh_xfer.hrl"). +-include("ssh_connect.hrl"). %% For ?DEFAULT_PACKET_SIZE and ?DEFAULT_WINDOW_SIZE %%-------------------------------------------------------------------- %% External exports @@ -46,6 +48,7 @@ file_handler, % atom() - callback module file_state, % state for the file callback module max_files, % integer >= 0 max no files sent during READDIR + options, % from the subsystem declaration handles % list of open handles %% handle is either {<int>, directory, {Path, unread|eof}} or %% {<int>, file, {Path, IoDevice}} @@ -120,6 +123,7 @@ init(Options) -> MaxLength = proplists:get_value(max_files, Options, 0), Vsn = proplists:get_value(sftpd_vsn, Options, 5), {ok, State#state{cwd = CWD, root = Root, max_files = MaxLength, + options = Options, handles = [], pending = <<>>, xf = #ssh_xfer{vsn = Vsn, ext = []}}}. @@ -163,7 +167,9 @@ handle_ssh_msg({ssh_cm, _, {exit_status, ChannelId, Status}}, State) -> %% Description: Handles other messages %%-------------------------------------------------------------------- handle_msg({ssh_channel_up, ChannelId, ConnectionManager}, - #state{xf =Xf} = State) -> + #state{xf = Xf, + options = Options} = State) -> + maybe_increase_recv_window(ConnectionManager, ChannelId, Options), {ok, State#state{xf = Xf#ssh_xfer{cm = ConnectionManager, channel = ChannelId}}}. @@ -933,3 +939,18 @@ rename(Path, Path2, ReqId, State0) -> {Status, FS1} = FileMod:rename(Path, Path2, FS0), State1 = State0#state{file_state = FS1}, send_status(Status, ReqId, State1). + + +maybe_increase_recv_window(ConnectionManager, ChannelId, Options) -> + WantedRecvWindowSize = + proplists:get_value(recv_window_size, Options, 1000000), + NumPkts = WantedRecvWindowSize div ?DEFAULT_PACKET_SIZE, + Increment = NumPkts*?DEFAULT_PACKET_SIZE - ?DEFAULT_WINDOW_SIZE, + + if + Increment > 0 -> + ssh_connection:adjust_window(ConnectionManager, ChannelId, + Increment); + Increment =< 0 -> + do_nothing + end. diff --git a/lib/ssh/src/ssh_sftpd_file.erl b/lib/ssh/src/ssh_sftpd_file.erl index 91ba228e38..a287e8891b 100644 --- a/lib/ssh/src/ssh_sftpd_file.erl +++ b/lib/ssh/src/ssh_sftpd_file.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2006-2010. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_sftpd_file_api.erl b/lib/ssh/src/ssh_sftpd_file_api.erl index 83d90907f5..c61d4e7ecf 100644 --- a/lib/ssh/src/ssh_sftpd_file_api.erl +++ b/lib/ssh/src/ssh_sftpd_file_api.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2007-2012. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_shell.erl b/lib/ssh/src/ssh_shell.erl index 8031450617..22ad4da948 100644 --- a/lib/ssh/src/ssh_shell.erl +++ b/lib/ssh/src/ssh_shell.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2009-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_subsystem_sup.erl b/lib/ssh/src/ssh_subsystem_sup.erl index e8855b09ac..ebe33ec7da 100644 --- a/lib/ssh/src/ssh_subsystem_sup.erl +++ b/lib/ssh/src/ssh_subsystem_sup.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_sup.erl b/lib/ssh/src/ssh_sup.erl index 6d2b9c107d..649ea00a06 100644 --- a/lib/ssh/src/ssh_sup.erl +++ b/lib/ssh/src/ssh_sup.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_system_sup.erl b/lib/ssh/src/ssh_system_sup.erl index 660fe8bb65..18a5d8071a 100644 --- a/lib/ssh/src/ssh_system_sup.erl +++ b/lib/ssh/src/ssh_system_sup.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2014. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -28,13 +29,15 @@ -behaviour(supervisor). +-include("ssh.hrl"). + -export([start_link/1, stop_listener/1, - stop_listener/2, stop_system/1, - stop_system/2, system_supervisor/2, + stop_listener/3, stop_system/1, + stop_system/3, system_supervisor/3, subsystem_supervisor/1, channel_supervisor/1, connection_supervisor/1, - acceptor_supervisor/1, start_subsystem/2, restart_subsystem/2, - restart_acceptor/2, stop_subsystem/2]). + acceptor_supervisor/1, start_subsystem/2, restart_subsystem/3, + restart_acceptor/3, stop_subsystem/2]). %% Supervisor callback -export([init/1]). @@ -45,14 +48,15 @@ start_link(ServerOpts) -> Address = proplists:get_value(address, ServerOpts), Port = proplists:get_value(port, ServerOpts), - Name = make_name(Address, Port), + Profile = proplists:get_value(profile, proplists:get_value(ssh_opts, ServerOpts), ?DEFAULT_PROFILE), + Name = make_name(Address, Port, Profile), supervisor:start_link({local, Name}, ?MODULE, [ServerOpts]). stop_listener(SysSup) -> stop_acceptor(SysSup). -stop_listener(Address, Port) -> - Name = make_name(Address, Port), +stop_listener(Address, Port, Profile) -> + Name = make_name(Address, Port, Profile), stop_acceptor(whereis(Name)). stop_system(SysSup) -> @@ -60,12 +64,12 @@ stop_system(SysSup) -> spawn(fun() -> sshd_sup:stop_child(Name) end), ok. -stop_system(Address, Port) -> - spawn(fun() -> sshd_sup:stop_child(Address, Port) end), +stop_system(Address, Port, Profile) -> + spawn(fun() -> sshd_sup:stop_child(Address, Port, Profile) end), ok. -system_supervisor(Address, Port) -> - Name = make_name(Address, Port), +system_supervisor(Address, Port, Profile) -> + Name = make_name(Address, Port, Profile), whereis(Name). subsystem_supervisor(SystemSup) -> @@ -103,9 +107,9 @@ stop_subsystem(SystemSup, SubSys) -> end. -restart_subsystem(Address, Port) -> - SysSupName = make_name(Address, Port), - SubSysName = id(ssh_subsystem_sup, Address, Port), +restart_subsystem(Address, Port, Profile) -> + SysSupName = make_name(Address, Port, Profile), + SubSysName = id(ssh_subsystem_sup, Address, Port, Profile), case supervisor:terminate_child(SysSupName, SubSysName) of ok -> supervisor:restart_child(SysSupName, SubSysName); @@ -113,9 +117,9 @@ restart_subsystem(Address, Port) -> Error end. -restart_acceptor(Address, Port) -> - SysSupName = make_name(Address, Port), - AcceptorName = id(ssh_acceptor_sup, Address, Port), +restart_acceptor(Address, Port, Profile) -> + SysSupName = make_name(Address, Port, Profile), + AcceptorName = id(ssh_acceptor_sup, Address, Port, Profile), supervisor:restart_child(SysSupName, AcceptorName). %%%========================================================================= @@ -137,7 +141,8 @@ child_specs(ServerOpts) -> ssh_acceptor_child_spec(ServerOpts) -> Address = proplists:get_value(address, ServerOpts), Port = proplists:get_value(port, ServerOpts), - Name = id(ssh_acceptor_sup, Address, Port), + Profile = proplists:get_value(profile, proplists:get_value(ssh_opts, ServerOpts), ?DEFAULT_PROFILE), + Name = id(ssh_acceptor_sup, Address, Port, Profile), StartFunc = {ssh_acceptor_sup, start_link, [ServerOpts]}, Restart = transient, Shutdown = infinity, @@ -155,12 +160,23 @@ ssh_subsystem_child_spec(ServerOpts) -> {Name, StartFunc, Restart, Shutdown, Type, Modules}. -id(Sup, Address, Port) -> - {Sup, Address, Port}. - -make_name(Address, Port) -> - list_to_atom(lists:flatten(io_lib:format("ssh_system_~p_~p_sup", - [Address, Port]))). +id(Sup, Address, Port, Profile) -> + case is_list(Address) of + true -> + {Sup, any, Port, Profile}; + false -> + {Sup, Address, Port, Profile} + end. + +make_name(Address, Port, Profile) -> + case is_list(Address) of + true -> + list_to_atom(lists:flatten(io_lib:format("ssh_system_~p_~p_~p_sup", + [any, Port, Profile]))); + false -> + list_to_atom(lists:flatten(io_lib:format("ssh_system_~p_~p_~p_sup", + [Address, Port, Profile]))) + end. ssh_subsystem_sup([{_, Child, _, [ssh_subsystem_sup]} | _]) -> Child; @@ -178,3 +194,4 @@ stop_acceptor(Sup) -> supervisor:which_children(Sup)], supervisor:terminate_child(AcceptorSup, Name). + diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl index 6c0873fd9e..18037b8461 100644 --- a/lib/ssh/src/ssh_transport.erl +++ b/lib/ssh/src/ssh_transport.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2004-2014. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -30,18 +31,109 @@ -include("ssh.hrl"). -export([versions/2, hello_version_msg/1]). --export([next_seqnum/1, decrypt_first_block/2, decrypt_blocks/3, - is_valid_mac/3, +-export([next_seqnum/1, + supported_algorithms/0, supported_algorithms/1, + default_algorithms/0, default_algorithms/1, + handle_packet_part/4, handle_hello_version/1, key_exchange_init_msg/1, key_init/3, new_keys_message/1, handle_kexinit_msg/3, handle_kexdh_init/2, - handle_kex_dh_gex_group/2, handle_kex_dh_gex_reply/2, + handle_kex_dh_gex_group/2, handle_kex_dh_gex_init/2, handle_kex_dh_gex_reply/2, handle_new_keys/2, handle_kex_dh_gex_request/2, handle_kexdh_reply/2, - unpack/3, decompress/2, ssh_packet/2, pack/2, msg_data/1, + handle_kex_ecdh_init/2, + handle_kex_ecdh_reply/2, + extract_public_key/1, + ssh_packet/2, pack/2, sign/3, verify/4]). +%%% For test suites +-export([pack/3]). +-export([decompress/2, decrypt_blocks/3, is_valid_mac/3 ]). % FIXME: remove + +%%%---------------------------------------------------------------------------- +%%% +%%% There is a difference between supported and default algorithms. The +%%% SUPPORTED algorithms can be handled (maybe untested...). The DEFAULT ones +%%% are announced in ssh_msg_kexinit and in ssh:default_algorithms/0 to the +%%% user. +%%% +%%% A supported algorithm can be requested in the option 'preferred_algorithms', +%%% but may give unexpected results before being promoted to default. +%%% +%%% This makes it possible to add experimental algorithms (in supported_algorithms) +%%% and test them without letting the default users know about them. +%%% + +default_algorithms() -> [{K,default_algorithms(K)} || K <- algo_classes()]. + +algo_classes() -> [kex, public_key, cipher, mac, compression]. + + +default_algorithms(cipher) -> + supported_algorithms(cipher, same(['AEAD_AES_128_GCM', + 'AEAD_AES_256_GCM'])); +default_algorithms(mac) -> + supported_algorithms(mac, same(['AEAD_AES_128_GCM', + 'AEAD_AES_256_GCM'])); +default_algorithms(Alg) -> + supported_algorithms(Alg, []). + + +supported_algorithms() -> [{K,supported_algorithms(K)} || K <- algo_classes()]. + +supported_algorithms(kex) -> + select_crypto_supported( + [ + {'ecdh-sha2-nistp256', [{public_keys,ecdh}, {ec_curve,secp256r1}, {hashs,sha256}]}, + {'ecdh-sha2-nistp384', [{public_keys,ecdh}, {ec_curve,secp384r1}, {hashs,sha384}]}, + {'diffie-hellman-group14-sha1', [{public_keys,dh}, {hashs,sha}]}, + {'diffie-hellman-group-exchange-sha256', [{public_keys,dh}, {hashs,sha256}]}, + {'diffie-hellman-group-exchange-sha1', [{public_keys,dh}, {hashs,sha}]}, + {'ecdh-sha2-nistp521', [{public_keys,ecdh}, {ec_curve,secp521r1}, {hashs,sha512}]}, + {'diffie-hellman-group1-sha1', [{public_keys,dh}, {hashs,sha}]} + ]); +supported_algorithms(public_key) -> + select_crypto_supported( + [{'ecdsa-sha2-nistp256', [{public_keys,ecdsa}, {hashs,sha256}, {ec_curve,secp256r1}]}, + {'ecdsa-sha2-nistp384', [{public_keys,ecdsa}, {hashs,sha384}, {ec_curve,secp384r1}]}, + {'ecdsa-sha2-nistp521', [{public_keys,ecdsa}, {hashs,sha512}, {ec_curve,secp521r1}]}, + {'ssh-rsa', [{public_keys,rsa}, {hashs,sha} ]}, + {'ssh-dss', [{public_keys,dss}, {hashs,sha} ]} + ]); + +supported_algorithms(cipher) -> + same( + select_crypto_supported( + [{'aes256-ctr', [{ciphers,{aes_ctr,256}}]}, + {'aes192-ctr', [{ciphers,{aes_ctr,192}}]}, + {'aes128-ctr', [{ciphers,{aes_ctr,128}}]}, + {'aes128-cbc', [{ciphers,aes_cbc128}]}, + {'[email protected]', [{ciphers,{aes_gcm,128}}]}, + {'[email protected]', [{ciphers,{aes_gcm,256}}]}, + {'AEAD_AES_128_GCM', [{ciphers,{aes_gcm,128}}]}, + {'AEAD_AES_256_GCM', [{ciphers,{aes_gcm,256}}]}, + {'3des-cbc', [{ciphers,des3_cbc}]} + ] + )); +supported_algorithms(mac) -> + same( + select_crypto_supported( + [{'hmac-sha2-256', [{hashs,sha256}]}, + {'hmac-sha2-512', [{hashs,sha512}]}, + {'hmac-sha1', [{hashs,sha}]}, + {'AEAD_AES_128_GCM', [{ciphers,{aes_gcm,128}}]}, + {'AEAD_AES_256_GCM', [{ciphers,{aes_gcm,256}}]} + ] + )); +supported_algorithms(compression) -> + same(['none', + '[email protected]', + 'zlib' + ]). + +%%%---------------------------------------------------------------------------- versions(client, Options)-> Vsn = proplists:get_value(vsn, Options, ?DEFAULT_CLIENT_VERSION), {Vsn, format_version(Vsn, software_version(Options))}; @@ -70,7 +162,7 @@ ssh_vsn() -> _:_ -> "" end. -random_id(Nlo, Nup) -> +random_id(Nlo, Nup) -> [crypto:rand_uniform($a,$z+1) || _<- lists:duplicate(crypto:rand_uniform(Nlo,Nup+1),x) ]. hello_version_msg(Data) -> @@ -79,12 +171,6 @@ hello_version_msg(Data) -> next_seqnum(SeqNum) -> (SeqNum + 1) band 16#ffffffff. -decrypt_first_block(Bin, #ssh{decrypt_block_size = BlockSize} = Ssh0) -> - <<EncBlock:BlockSize/binary, EncData/binary>> = Bin, - {Ssh, <<?UINT32(PacketLen), _/binary>> = DecData} = - decrypt(Ssh0, EncBlock), - {Ssh, PacketLen, DecData, EncData}. - decrypt_blocks(Bin, Length, Ssh0) -> <<EncBlocks:Length/binary, EncData/binary>> = Bin, {Ssh, DecData} = decrypt(Ssh0, EncBlocks), @@ -128,62 +214,45 @@ key_exchange_init_msg(Ssh0) -> kex_init(#ssh{role = Role, opts = Opts, available_host_keys = HostKeyAlgs}) -> Random = ssh_bits:random(16), - Compression = case proplists:get_value(compression, Opts, none) of - openssh_zlib -> ["[email protected]", "none"]; - zlib -> ["zlib", "none"]; - none -> ["none", "zlib"] - end, - kexinit_messsage(Role, Random, Compression, HostKeyAlgs). + PrefAlgs = + case proplists:get_value(preferred_algorithms,Opts) of + undefined -> + default_algorithms(); + Algs0 -> + Algs0 + end, + kexinit_message(Role, Random, PrefAlgs, HostKeyAlgs). key_init(client, Ssh, Value) -> Ssh#ssh{c_keyinit = Value}; key_init(server, Ssh, Value) -> Ssh#ssh{s_keyinit = Value}. -available_ssh_algos() -> - Supports = crypto:supports(), - CipherAlgos = [{aes_ctr, "aes128-ctr"}, {aes_cbc128, "aes128-cbc"}, {des3_cbc, "3des-cbc"}], - Ciphers = [SshAlgo || - {CryptoAlgo, SshAlgo} <- CipherAlgos, - lists:member(CryptoAlgo, proplists:get_value(ciphers, Supports, []))], - HashAlgos = [{sha256, "hmac-sha2-256"}, {sha, "hmac-sha1"}], - Hashs = [SshAlgo || - {CryptoAlgo, SshAlgo} <- HashAlgos, - lists:member(CryptoAlgo, proplists:get_value(hashs, Supports, []))], - {Ciphers, Hashs}. - -kexinit_messsage(client, Random, Compression, HostKeyAlgs) -> - {CipherAlgs, HashAlgs} = available_ssh_algos(), - #ssh_msg_kexinit{ - cookie = Random, - kex_algorithms = ["diffie-hellman-group1-sha1"], - server_host_key_algorithms = HostKeyAlgs, - encryption_algorithms_client_to_server = CipherAlgs, - encryption_algorithms_server_to_client = CipherAlgs, - mac_algorithms_client_to_server = HashAlgs, - mac_algorithms_server_to_client = HashAlgs, - compression_algorithms_client_to_server = Compression, - compression_algorithms_server_to_client = Compression, - languages_client_to_server = [], - languages_server_to_client = [] - }; -kexinit_messsage(server, Random, Compression, HostKeyAlgs) -> - {CipherAlgs, HashAlgs} = available_ssh_algos(), +kexinit_message(_Role, Random, Algs, HostKeyAlgs) -> #ssh_msg_kexinit{ cookie = Random, - kex_algorithms = ["diffie-hellman-group1-sha1"], + kex_algorithms = to_strings( get_algs(kex,Algs) ), server_host_key_algorithms = HostKeyAlgs, - encryption_algorithms_client_to_server = CipherAlgs, - encryption_algorithms_server_to_client = CipherAlgs, - mac_algorithms_client_to_server = HashAlgs, - mac_algorithms_server_to_client = HashAlgs, - compression_algorithms_client_to_server = Compression, - compression_algorithms_server_to_client = Compression, + encryption_algorithms_client_to_server = c2s(cipher,Algs), + encryption_algorithms_server_to_client = s2c(cipher,Algs), + mac_algorithms_client_to_server = c2s(mac,Algs), + mac_algorithms_server_to_client = s2c(mac,Algs), + compression_algorithms_client_to_server = c2s(compression,Algs), + compression_algorithms_server_to_client = s2c(compression,Algs), languages_client_to_server = [], languages_server_to_client = [] }. +c2s(Key, Algs) -> x2y(client2server, Key, Algs). +s2c(Key, Algs) -> x2y(server2client, Key, Algs). + +x2y(DirectionKey, Key, Algs) -> to_strings(proplists:get_value(DirectionKey, get_algs(Key,Algs))). + +get_algs(Key, Algs) -> proplists:get_value(Key, Algs, default_algorithms(Key)). + +to_strings(L) -> lists:map(fun erlang:atom_to_list/1, L). + new_keys_message(Ssh0) -> {SshPacket, Ssh} = ssh_packet(#ssh_msg_newkeys{}, Ssh0), @@ -198,154 +267,411 @@ handle_kexinit_msg(#ssh_msg_kexinit{} = CounterPart, #ssh_msg_kexinit{} = Own, Ssh0#ssh{algorithms = Algoritms}); _ -> %% TODO: Correct code? - throw(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, + throw(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, description = "Selection of key exchange" " algorithm failed", - language = "en"}) + language = ""}) end; handle_kexinit_msg(#ssh_msg_kexinit{} = CounterPart, #ssh_msg_kexinit{} = Own, #ssh{role = server} = Ssh) -> {ok, Algoritms} = select_algorithm(server, CounterPart, Own), - {ok, Ssh#ssh{algorithms = Algoritms}}. + case verify_algorithm(Algoritms) of + true -> + {ok, Ssh#ssh{algorithms = Algoritms}}; + _ -> + throw(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Selection of key exchange" + " algorithm failed", + language = ""}) + end. %% TODO: diffie-hellman-group14-sha1 should also be supported. %% Maybe check more things ... -verify_algorithm(#alg{kex = 'diffie-hellman-group1-sha1'}) -> - true; -verify_algorithm(#alg{kex = 'diffie-hellman-group-exchange-sha1'}) -> - true; -verify_algorithm(_) -> - false. -key_exchange_first_msg('diffie-hellman-group1-sha1', Ssh0) -> - {G, P} = dh_group1(), - {Private, Public} = dh_gen_key(G, P, 1024), +verify_algorithm(#alg{kex = undefined}) -> false; +verify_algorithm(#alg{hkey = undefined}) -> false; +verify_algorithm(#alg{send_mac = undefined}) -> false; +verify_algorithm(#alg{recv_mac = undefined}) -> false; +verify_algorithm(#alg{encrypt = undefined}) -> false; +verify_algorithm(#alg{decrypt = undefined}) -> false; +verify_algorithm(#alg{compress = undefined}) -> false; +verify_algorithm(#alg{decompress = undefined}) -> false; +verify_algorithm(#alg{kex = Kex}) -> lists:member(Kex, supported_algorithms(kex)). + +%%%---------------------------------------------------------------- +%%% +%%% Key exchange initialization +%%% +key_exchange_first_msg(Kex, Ssh0) when Kex == 'diffie-hellman-group1-sha1' ; + Kex == 'diffie-hellman-group14-sha1' -> + {G, P} = dh_group(Kex), + {Public, Private} = generate_key(dh, [P,G]), {SshPacket, Ssh1} = ssh_packet(#ssh_msg_kexdh_init{e = Public}, Ssh0), {ok, SshPacket, Ssh1#ssh{keyex_key = {{Private, Public}, {G, P}}}}; -key_exchange_first_msg('diffie-hellman-group-exchange-sha1', Ssh0) -> - Min = ?DEFAULT_DH_GROUP_MIN, - NBits = ?DEFAULT_DH_GROUP_NBITS, - Max = ?DEFAULT_DH_GROUP_MAX, +key_exchange_first_msg(Kex, Ssh0=#ssh{opts=Opts}) when Kex == 'diffie-hellman-group-exchange-sha1' ; + Kex == 'diffie-hellman-group-exchange-sha256' -> + {Min,NBits,Max} = + proplists:get_value(dh_gex_limits, Opts, {?DEFAULT_DH_GROUP_MIN, + ?DEFAULT_DH_GROUP_NBITS, + ?DEFAULT_DH_GROUP_MAX}), {SshPacket, Ssh1} = ssh_packet(#ssh_msg_kex_dh_gex_request{min = Min, - n = NBits, max = Max}, + n = NBits, + max = Max}, Ssh0), {ok, SshPacket, - Ssh1#ssh{keyex_info = {Min, Max, NBits}}}. - - -handle_kexdh_init(#ssh_msg_kexdh_init{e = E}, Ssh0) -> - {G, P} = dh_group1(), + Ssh1#ssh{keyex_info = {Min, Max, NBits}}}; + +key_exchange_first_msg(Kex, Ssh0) when Kex == 'ecdh-sha2-nistp256' ; + Kex == 'ecdh-sha2-nistp384' ; + Kex == 'ecdh-sha2-nistp521' -> + Curve = ecdh_curve(Kex), + {Public, Private} = generate_key(ecdh, Curve), + {SshPacket, Ssh1} = ssh_packet(#ssh_msg_kex_ecdh_init{q_c=Public}, Ssh0), + {ok, SshPacket, + Ssh1#ssh{keyex_key = {{Public,Private},Curve}}}. + +%%%---------------------------------------------------------------- +%%% +%%% diffie-hellman-group1-sha1 +%%% diffie-hellman-group14-sha1 +%%% +handle_kexdh_init(#ssh_msg_kexdh_init{e = E}, + Ssh0 = #ssh{algorithms = #alg{kex=Kex}}) -> + %% server + {G, P} = dh_group(Kex), if 1=<E, E=<(P-1) -> - {Private, Public} = dh_gen_key(G, P, 1024), - K = ssh_math:ipow(E, Private, P), - Key = get_host_key(Ssh0), - H = kex_h(Ssh0, Key, E, Public, K), - H_SIG = sign_host_key(Ssh0, Key, H), - {SshPacket, Ssh1} = ssh_packet(#ssh_msg_kexdh_reply{public_host_key = Key, - f = Public, - h_sig = H_SIG - }, Ssh0), - + {Public, Private} = generate_key(dh, [P,G]), + K = compute_key(dh, E, Private, [P,G]), + MyPrivHostKey = get_host_key(Ssh0), + MyPubHostKey = extract_public_key(MyPrivHostKey), + H = kex_h(Ssh0, MyPubHostKey, E, Public, K), + H_SIG = sign_host_key(Ssh0, MyPrivHostKey, H), + {SshPacket, Ssh1} = + ssh_packet(#ssh_msg_kexdh_reply{public_host_key = MyPubHostKey, + f = Public, + h_sig = H_SIG + }, Ssh0), {ok, SshPacket, Ssh1#ssh{keyex_key = {{Private, Public}, {G, P}}, shared_secret = K, exchanged_hash = H, session_id = sid(Ssh1, H)}}; + true -> - Error = {error,bad_e_from_peer}, - Disconnect = #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed, 'f' out of bounds", - language = "en"}, - throw({Error, Disconnect}) + throw({{error,bad_e_from_peer}, + #ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Key exchange failed, 'e' out of bounds", + language = ""} + }) end. +handle_kexdh_reply(#ssh_msg_kexdh_reply{public_host_key = PeerPubHostKey, + f = F, + h_sig = H_SIG}, + #ssh{keyex_key = {{Private, Public}, {G, P}}} = Ssh0) -> + %% client + if + 1=<F, F=<(P-1)-> + K = compute_key(dh, F, Private, [P,G]), + H = kex_h(Ssh0, PeerPubHostKey, Public, F, K), + + case verify_host_key(Ssh0, PeerPubHostKey, H, H_SIG) of + ok -> + {SshPacket, Ssh} = ssh_packet(#ssh_msg_newkeys{}, Ssh0), + {ok, SshPacket, Ssh#ssh{shared_secret = K, + exchanged_hash = H, + session_id = sid(Ssh, H)}}; + Error -> + throw({Error, + #ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Key exchange failed", + language = "en"} + }) + end; + + true -> + throw({{error,bad_f_from_peer}, + #ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Key exchange failed, 'f' out of bounds", + language = ""} + }) + end. + + +%%%---------------------------------------------------------------- +%%% +%%% diffie-hellman-group-exchange-sha1 +%%% +handle_kex_dh_gex_request(#ssh_msg_kex_dh_gex_request{min = Min0, + n = NBits, + max = Max0}, + Ssh0=#ssh{opts=Opts}) when Min0=<NBits, NBits=<Max0 -> + %% server + {Min, Max} = adjust_gex_min_max(Min0, Max0, Opts), + case public_key:dh_gex_group(Min, NBits, Max, + proplists:get_value(dh_gex_groups,Opts)) of + {ok, {_Sz, {G,P}}} -> + {Public, Private} = generate_key(dh, [P,G]), + {SshPacket, Ssh} = + ssh_packet(#ssh_msg_kex_dh_gex_group{p = P, g = G}, Ssh0), + {ok, SshPacket, + Ssh#ssh{keyex_key = {{Private, Public}, {G, P}}, + keyex_info = {Min, Max, NBits} + }}; + {error,_} -> + throw(#ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_PROTOCOL_ERROR, + description = "No possible diffie-hellman-group-exchange group found", + language = ""}) + end; + +handle_kex_dh_gex_request(#ssh_msg_kex_dh_gex_request_old{n = NBits}, + Ssh0=#ssh{opts=Opts}) -> + %% server + %% + %% This message was in the draft-00 of rfc4419 + %% (https://tools.ietf.org/html/draft-ietf-secsh-dh-group-exchange-00) + %% In later drafts and the rfc is "is used for backward compatibility". + %% Unfortunatly the rfc does not specify how to treat the parameter n + %% if there is no group of that modulus length :( + %% The draft-00 however specifies that n is the "... number of bits + %% the subgroup should have at least". + %% Further, it says that "Servers and clients SHOULD support groups + %% with a modulus length of k bits, where 1024 <= k <= 8192." + %% + Min0 = NBits, + Max0 = 8192, + {Min, Max} = adjust_gex_min_max(Min0, Max0, Opts), + case public_key:dh_gex_group(Min, NBits, Max, + proplists:get_value(dh_gex_groups,Opts)) of + {ok, {_Sz, {G,P}}} -> + {Public, Private} = generate_key(dh, [P,G]), + {SshPacket, Ssh} = + ssh_packet(#ssh_msg_kex_dh_gex_group{p = P, g = G}, Ssh0), + {ok, SshPacket, + Ssh#ssh{keyex_key = {{Private, Public}, {G, P}}, + keyex_info = {-1, -1, NBits} % flag for kex_h hash calc + }}; + {error,_} -> + throw(#ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_PROTOCOL_ERROR, + description = "No possible diffie-hellman-group-exchange group found", + language = ""}) + end; + +handle_kex_dh_gex_request(_, _) -> + throw({{error,bad_ssh_msg_kex_dh_gex_request}, + #ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Key exchange failed, bad values in ssh_msg_kex_dh_gex_request", + language = ""} + }). + + +adjust_gex_min_max(Min0, Max0, Opts) -> + case proplists:get_value(dh_gex_limits, Opts) of + undefined -> + {Min0, Max0}; + {Min1, Max1} -> + Min2 = max(Min0, Min1), + Max2 = min(Max0, Max1), + if + Min2 =< Max2 -> + {Min2, Max2}; + Max2 < Min2 -> + throw(#ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_PROTOCOL_ERROR, + description = "No possible diffie-hellman-group-exchange group possible", + language = ""}) + end + end. + + handle_kex_dh_gex_group(#ssh_msg_kex_dh_gex_group{p = P, g = G}, Ssh0) -> - {Private, Public} = dh_gen_key(G,P,1024), + %% client + {Public, Private} = generate_key(dh, [P,G]), {SshPacket, Ssh1} = - ssh_packet(#ssh_msg_kex_dh_gex_init{e = Public}, Ssh0), + ssh_packet(#ssh_msg_kex_dh_gex_init{e = Public}, Ssh0), % Pub = G^Priv mod P (def) + {ok, SshPacket, Ssh1#ssh{keyex_key = {{Private, Public}, {G, P}}}}. +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}} = + 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), + MyPubHostKey = extract_public_key(MyPrivHostKey), + H = kex_h(Ssh0, MyPubHostKey, Min, NBits, Max, P, G, E, Public, K), + H_SIG = sign_host_key(Ssh0, MyPrivHostKey, H), + {SshPacket, Ssh} = + ssh_packet(#ssh_msg_kex_dh_gex_reply{public_host_key = MyPubHostKey, + f = Public, + h_sig = H_SIG}, Ssh0), + {ok, SshPacket, Ssh#ssh{shared_secret = K, + exchanged_hash = H, + session_id = sid(Ssh, H) + }}; + true -> + throw({{error,bad_K}, + #ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Key exchange failed, 'K' out of bounds", + language = ""} + }) + end; + true -> + throw({{error,bad_e_from_peer}, + #ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Key exchange failed, 'e' out of bounds", + language = ""} + }) + end. + +handle_kex_dh_gex_reply(#ssh_msg_kex_dh_gex_reply{public_host_key = PeerPubHostKey, + f = F, + h_sig = H_SIG}, + #ssh{keyex_key = {{Private, Public}, {G, P}}, + keyex_info = {Min, Max, NBits}} = + Ssh0) -> + %% client + if + 1=<F, F=<(P-1)-> + K = compute_key(dh, F, Private, [P,G]), + if + 1<K, K<(P-1) -> + H = kex_h(Ssh0, PeerPubHostKey, Min, NBits, Max, P, G, Public, F, K), + + case verify_host_key(Ssh0, PeerPubHostKey, H, H_SIG) of + ok -> + {SshPacket, Ssh} = ssh_packet(#ssh_msg_newkeys{}, Ssh0), + {ok, SshPacket, Ssh#ssh{shared_secret = K, + exchanged_hash = H, + session_id = sid(Ssh, H)}}; + _Error -> + throw(#ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Key exchange failed", + language = ""} + ) + end; + + true -> + throw({{error,bad_K}, + #ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Key exchange failed, 'K' out of bounds", + language = ""} + }) + end; + true -> + throw({{error,bad_f_from_peer}, + #ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Key exchange failed, 'f' out of bounds", + language = ""} + }) + end. + +%%%---------------------------------------------------------------- +%%% +%%% diffie-hellman-ecdh-sha2-* +%%% +handle_kex_ecdh_init(#ssh_msg_kex_ecdh_init{q_c = PeerPublic}, + Ssh0 = #ssh{algorithms = #alg{kex=Kex}}) -> + %% at server + Curve = ecdh_curve(Kex), + {MyPublic, MyPrivate} = generate_key(ecdh, Curve), + try + compute_key(ecdh, PeerPublic, MyPrivate, Curve) + of + K -> + MyPrivHostKey = get_host_key(Ssh0), + MyPubHostKey = extract_public_key(MyPrivHostKey), + H = kex_h(Ssh0, Curve, MyPubHostKey, PeerPublic, MyPublic, K), + H_SIG = sign_host_key(Ssh0, MyPrivHostKey, H), + {SshPacket, Ssh1} = + ssh_packet(#ssh_msg_kex_ecdh_reply{public_host_key = MyPubHostKey, + q_s = MyPublic, + h_sig = H_SIG}, + Ssh0), + {ok, SshPacket, Ssh1#ssh{keyex_key = {{MyPublic,MyPrivate},Curve}, + shared_secret = K, + exchanged_hash = H, + session_id = sid(Ssh1, H)}} + catch + _:_ -> + throw({{error,invalid_peer_public_key}, + #ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Peer ECDH public key is invalid", + language = ""} + }) + end. + +handle_kex_ecdh_reply(#ssh_msg_kex_ecdh_reply{public_host_key = PeerPubHostKey, + q_s = PeerPublic, + h_sig = H_SIG}, + #ssh{keyex_key = {{MyPublic,MyPrivate}, Curve}} = Ssh0 + ) -> + %% at client + try + compute_key(ecdh, PeerPublic, MyPrivate, Curve) + of + K -> + H = kex_h(Ssh0, Curve, PeerPubHostKey, MyPublic, PeerPublic, K), + case verify_host_key(Ssh0, PeerPubHostKey, H, H_SIG) of + ok -> + {SshPacket, Ssh} = ssh_packet(#ssh_msg_newkeys{}, Ssh0), + {ok, SshPacket, Ssh#ssh{shared_secret = K, + exchanged_hash = H, + session_id = sid(Ssh, H)}}; + Error -> + throw({Error, + #ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Key exchange failed", + language = ""} + }) + end + catch + _:_ -> + throw({{error,invalid_peer_public_key}, + #ssh_msg_disconnect{ + code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = "Peer ECDH public key is invalid", + language = ""} + }) + end. + + +%%%---------------------------------------------------------------- handle_new_keys(#ssh_msg_newkeys{}, Ssh0) -> try install_alg(Ssh0) of #ssh{} = Ssh -> {ok, Ssh} catch - error:_Error -> %% TODO: Throw earlier .... + _C:_Error -> %% TODO: Throw earlier .... throw(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, description = "Install alg failed", language = "en"}) end. - -%% %% Select algorithms -handle_kexdh_reply(#ssh_msg_kexdh_reply{public_host_key = HostKey, f = F, - h_sig = H_SIG}, - #ssh{keyex_key = {{Private, Public}, {_G, P}}} = Ssh0) when 1=<F, F=<(P-1)-> - K = ssh_math:ipow(F, Private, P), - H = kex_h(Ssh0, HostKey, Public, F, K), - - case verify_host_key(Ssh0, HostKey, H, H_SIG) of - ok -> - {SshPacket, Ssh} = ssh_packet(#ssh_msg_newkeys{}, Ssh0), - {ok, SshPacket, Ssh#ssh{shared_secret = K, - exchanged_hash = H, - session_id = sid(Ssh, H)}}; - Error -> - Disconnect = #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed", - language = "en"}, - throw({Error, Disconnect}) - end; -handle_kexdh_reply(#ssh_msg_kexdh_reply{}, _SSH) -> - Error = {error,bad_f_from_peer}, - Disconnect = #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed, 'f' out of bounds", - language = "en"}, - throw({Error, Disconnect}). - - -handle_kex_dh_gex_request(#ssh_msg_kex_dh_gex_request{min = _Min, - n = _NBits, - max = _Max}, Ssh0) -> - {G,P} = dh_group1(), %% TODO real imp this seems to be a hack?! - {Private, Public} = dh_gen_key(G, P, 1024), - {SshPacket, Ssh} = - ssh_packet(#ssh_msg_kex_dh_gex_group{p = P, g = G}, Ssh0), - {ok, SshPacket, - Ssh#ssh{keyex_key = {{Private, Public}, {G, P}}}}. - -handle_kex_dh_gex_reply(#ssh_msg_kex_dh_gex_reply{public_host_key = HostKey, - f = F, - h_sig = H_SIG}, - #ssh{keyex_key = {{Private, Public}, {G, P}}, - keyex_info = {Min, Max, NBits}} = - Ssh0) -> - K = ssh_math:ipow(F, Private, P), - H = kex_h(Ssh0, HostKey, Min, NBits, Max, P, G, Public, F, K), - - case verify_host_key(Ssh0, HostKey, H, H_SIG) of - ok -> - {SshPacket, Ssh} = ssh_packet(#ssh_msg_newkeys{}, Ssh0), - {ok, SshPacket, Ssh#ssh{shared_secret = K, - exchanged_hash = H, - session_id = sid(Ssh, H)}}; - _Error -> - Disconnect = #ssh_msg_disconnect{ - code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = "Key exchange failed", - language = "en"}, - throw(Disconnect) - end. - %% select session id sid(#ssh{session_id = undefined}, H) -> H; @@ -359,33 +685,49 @@ get_host_key(SSH) -> #ssh{key_cb = Mod, opts = Opts, algorithms = ALG} = SSH, case Mod:host_key(ALG#alg.hkey, Opts) of - {ok, #'RSAPrivateKey'{} = Key} -> - Key; - {ok, #'DSAPrivateKey'{} = Key} -> - Key; + {ok, #'RSAPrivateKey'{} = Key} -> Key; + {ok, #'DSAPrivateKey'{} = Key} -> Key; + {ok, #'ECPrivateKey'{} = Key} -> Key; Result -> exit({error, {Result, unsupported_key_type}}) end. -sign_host_key(_Ssh, #'RSAPrivateKey'{} = Private, H) -> - Hash = sha, %% Option ?! - _Signature = sign(H, Hash, Private); -sign_host_key(_Ssh, #'DSAPrivateKey'{} = Private, H) -> - Hash = sha, %% Option ?! - _RawSignature = sign(H, Hash, Private). +sign_host_key(_Ssh, PrivateKey, H) -> + sign(H, sign_host_key_sha(PrivateKey), PrivateKey). + +sign_host_key_sha(#'ECPrivateKey'{parameters = {namedCurve,OID}}) -> sha(OID); +sign_host_key_sha(#'RSAPrivateKey'{}) -> sha; +sign_host_key_sha(#'DSAPrivateKey'{}) -> sha. + + +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}) -> + {Y, #'Dss-Parms'{p=P, q=Q, g=G}}; +extract_public_key(#'ECPrivateKey'{parameters = {namedCurve,OID}, + publicKey = Q}) -> + {#'ECPoint'{point=Q}, {namedCurve,OID}}. + verify_host_key(SSH, PublicKey, Digest, Signature) -> - case verify(Digest, sha, Signature, PublicKey) of + case verify(Digest, host_key_sha(PublicKey), Signature, PublicKey) of false -> {error, bad_signature}; true -> known_host_key(SSH, PublicKey, public_algo(PublicKey)) end. -public_algo(#'RSAPublicKey'{}) -> - 'ssh-rsa'; -public_algo({_, #'Dss-Parms'{}}) -> - 'ssh-dss'. + +host_key_sha(#'RSAPublicKey'{}) -> sha; +host_key_sha({_, #'Dss-Parms'{}}) -> sha; +host_key_sha({#'ECPoint'{},{namedCurve,OID}}) -> sha(OID). + +public_algo(#'RSAPublicKey'{}) -> 'ssh-rsa'; +public_algo({_, #'Dss-Parms'{}}) -> 'ssh-dss'; +public_algo({#'ECPoint'{},{namedCurve,OID}}) -> + Curve = public_key:oid2ssh_curvename(OID), + list_to_atom("ecdsa-sha2-" ++ binary_to_list(Curve)). + accepted_host(Ssh, PeerName, Opts) -> case proplists:get_value(silently_accept_hosts, Opts, false) of @@ -418,8 +760,12 @@ known_host_key(#ssh{opts = Opts, key_cb = Mod, peer = Peer} = Ssh, %% The first algorithm in each list MUST be the preferred (guessed) %% algorithm. Each string MUST contain at least one algorithm name. select_algorithm(Role, Client, Server) -> - {Encrypt, Decrypt} = select_encrypt_decrypt(Role, Client, Server), - {SendMac, RecvMac} = select_send_recv_mac(Role, Client, Server), + {Encrypt0, Decrypt0} = select_encrypt_decrypt(Role, Client, Server), + {SendMac0, RecvMac0} = select_send_recv_mac(Role, Client, Server), + + {Encrypt, SendMac} = aead_gcm_simultan(Encrypt0, SendMac0), + {Decrypt, RecvMac} = aead_gcm_simultan(Decrypt0, RecvMac0), + {Compression, Decompression} = select_compression_decompression(Role, Client, Server), @@ -450,6 +796,38 @@ select_algorithm(Role, Client, Server) -> s_lng = S_Lng}, {ok, Alg}. + +%%% It is an agreed problem with RFC 5674 that if the selection is +%%% Cipher = AEAD_AES_x_GCM and +%%% Mac = AEAD_AES_y_GCM (where x =/= y) +%%% then it is undefined what length should be selected. +%%% +%%% If only one of the two lengths (128,256) is available, I claim that +%%% there is no such ambiguity. + +%%% From https://anongit.mindrot.org/openssh.git/plain/PROTOCOL +%%% (read Nov 20, 2015) +%%% 1.6 transport: AES-GCM +%%% +%%% OpenSSH supports the AES-GCM algorithm as specified in RFC 5647. +%%% Because of problems with the specification of the key exchange +%%% the behaviour of OpenSSH differs from the RFC as follows: +%%% +%%% AES-GCM is only negotiated as the cipher algorithms +%%% "[email protected]" or "[email protected]" and never as +%%% an MAC algorithm. Additionally, if AES-GCM is selected as the cipher +%%% 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}. + + select_encrypt_decrypt(client, Client, Server) -> Encrypt = select(Client#ssh_msg_kexinit.encryption_algorithms_client_to_server, @@ -484,18 +862,18 @@ select_compression_decompression(client, Client, Server) -> Compression = select(Client#ssh_msg_kexinit.compression_algorithms_client_to_server, Server#ssh_msg_kexinit.compression_algorithms_client_to_server), - Decomprssion = + Decompression = select(Client#ssh_msg_kexinit.compression_algorithms_server_to_client, Server#ssh_msg_kexinit.compression_algorithms_server_to_client), - {Compression, Decomprssion}; + {Compression, Decompression}; select_compression_decompression(server, Client, Server) -> - Decomprssion = + Decompression = select(Client#ssh_msg_kexinit.compression_algorithms_client_to_server, Server#ssh_msg_kexinit.compression_algorithms_client_to_server), Compression = select(Client#ssh_msg_kexinit.compression_algorithms_server_to_client, Server#ssh_msg_kexinit.compression_algorithms_server_to_client), - {Compression, Decomprssion}. + {Compression, Decompression}. install_alg(SSH) -> SSH1 = alg_final(SSH), @@ -537,14 +915,15 @@ alg_final(SSH0) -> {ok,SSH6} = decompress_final(SSH5), SSH6. -select_all(CL, SL) when length(CL) + length(SL) < 50 -> +select_all(CL, SL) when length(CL) + length(SL) < ?MAX_NUM_ALGORITHMS -> A = CL -- SL, %% algortihms only used by client %% algorithms used by client and server (client pref) lists:map(fun(ALG) -> list_to_atom(ALG) end, (CL -- A)); -select_all(_CL, _SL) -> +select_all(CL, SL) -> + Err = lists:concat(["Received too many algorithms (",length(CL),"+",length(SL)," >= ",?MAX_NUM_ALGORITHMS,")."]), throw(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR, - description = "Too many algorithms", - language = "en"}). + description = Err, + language = ""}). select([], []) -> @@ -565,58 +944,147 @@ ssh_packet(Msg, Ssh) -> BinMsg = ssh_message:encode(Msg), pack(BinMsg, Ssh). -pack(Data0, #ssh{encrypt_block_size = BlockSize, - send_sequence = SeqNum, send_mac = MacAlg, - send_mac_key = MacKey} - = Ssh0) when is_binary(Data0) -> - {Ssh1, Data} = compress(Ssh0, Data0), - PL = (BlockSize - ((4 + 1 + size(Data)) rem BlockSize)) rem BlockSize, - PaddingLen = if PL < 4 -> PL + BlockSize; - true -> PL - end, - Padding = ssh_bits:random(PaddingLen), - PacketLen = 1 + PaddingLen + size(Data), - PacketData = <<?UINT32(PacketLen),?BYTE(PaddingLen), - Data/binary, Padding/binary>>, - {Ssh2, EncPacket} = encrypt(Ssh1, PacketData), - MAC = mac(MacAlg, MacKey, SeqNum, PacketData), - Packet = [EncPacket, MAC], - Ssh = Ssh2#ssh{send_sequence = (SeqNum+1) band 16#ffffffff}, - {Packet, Ssh}. - -unpack(EncodedSoFar, ReminingLenght, #ssh{recv_mac_size = MacSize} = Ssh0) -> - SshLength = ReminingLenght - MacSize, - {NoMac, Mac, Rest} = case MacSize of - 0 -> - <<NoMac0:SshLength/binary, - Rest0/binary>> = EncodedSoFar, - {NoMac0, <<>>, Rest0}; - _ -> - <<NoMac0:SshLength/binary, - Mac0:MacSize/binary, - Rest0/binary>> = EncodedSoFar, - {NoMac0, Mac0, Rest0} - end, - {Ssh1, DecData, <<>>} = - case SshLength of - 0 -> - {Ssh0, <<>>, <<>>}; - _ -> - decrypt_blocks(NoMac, SshLength, Ssh0) +pack(Data, Ssh=#ssh{}) -> + pack(Data, Ssh, 0). + +%%% Note: pack/3 is only to be called from tests that wants +%%% to deliberetly send packets with wrong PacketLength! +%%% Use pack/2 for all other purposes! +pack(PlainText, + #ssh{send_sequence = SeqNum, + send_mac = MacAlg, + send_mac_key = MacKey, + encrypt = CryptoAlg} = Ssh0, PacketLenDeviationForTests) when is_binary(PlainText) -> + + {Ssh1, CompressedPlainText} = compress(Ssh0, PlainText), + {EcryptedPacket, MAC, Ssh3} = + case pkt_type(CryptoAlg) of + common -> + PaddingLen = padding_length(4+1+size(CompressedPlainText), Ssh0), + Padding = ssh_bits:random(PaddingLen), + PlainPacketLen = 1 + PaddingLen + size(CompressedPlainText) + PacketLenDeviationForTests, + PlainPacketData = <<?UINT32(PlainPacketLen),?BYTE(PaddingLen), CompressedPlainText/binary, Padding/binary>>, + {Ssh2, EcryptedPacket0} = encrypt(Ssh1, PlainPacketData), + MAC0 = mac(MacAlg, MacKey, SeqNum, PlainPacketData), + {EcryptedPacket0, MAC0, 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} end, - {Ssh1, DecData, Rest, Mac}. + FinalPacket = [EcryptedPacket, MAC], + Ssh = Ssh3#ssh{send_sequence = (SeqNum+1) band 16#ffffffff}, + {FinalPacket, Ssh}. + + +padding_length(Size, #ssh{encrypt_block_size = BlockSize, + random_length_padding = RandomLengthPadding}) -> + PL = (BlockSize - (Size rem BlockSize)) rem BlockSize, + MinPaddingLen = if PL < 4 -> PL + BlockSize; + true -> PL + end, + PadBlockSize = max(BlockSize,4), + MaxExtraBlocks = (max(RandomLengthPadding,MinPaddingLen) - MinPaddingLen) div PadBlockSize, + ExtraPaddingLen = try crypto:rand_uniform(0,MaxExtraBlocks)*PadBlockSize + catch _:_ -> 0 + end, + MinPaddingLen + ExtraPaddingLen. + + + +handle_packet_part(<<>>, Encrypted0, 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}; + + {ok, PacketLen, _, _, _} when PacketLen > ?SSH_MAX_PACKET_SIZE -> + %% far too long message than expected + {error, {exceeds_max_size,PacketLen}}; + + {ok, PacketLen, Decrypted, Encrypted1, + #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) + end; -msg_data(PacketData) -> - <<Len:32, PaddingLen:8, _/binary>> = PacketData, - DataLen = Len - PaddingLen - 1, - <<_:32, _:8, Data:DataLen/binary, - _:PaddingLen/binary>> = PacketData, - Data. +handle_packet_part(DecryptedPfx, EncryptedBuffer, TotalNeeded, Ssh0) + when (size(DecryptedPfx)+size(EncryptedBuffer)) < TotalNeeded -> + %% need more bytes to finalize the packet + {get_more, DecryptedPfx, EncryptedBuffer, TotalNeeded, Ssh0}; + +handle_packet_part(DecryptedPfx, EncryptedBuffer, TotalNeeded, + #ssh{recv_mac_size = MacSize, + decrypt = CryptoAlg} = Ssh0) -> + %% enough bytes to decode the packet. + DecryptLen = TotalNeeded - size(DecryptedPfx) - MacSize, + <<EncryptedSfx:DecryptLen/binary, Mac:MacSize/binary, NextPacketBytes/binary>> = EncryptedBuffer, + case pkt_type(CryptoAlg) of + common -> + {Ssh1, DecryptedSfx} = decrypt(Ssh0, EncryptedSfx), + DecryptedPacket = <<DecryptedPfx/binary, DecryptedSfx/binary>>, + case is_valid_mac(Mac, DecryptedPacket, Ssh1) of + false -> + {bad_mac, Ssh1}; + true -> + {Ssh, DecompressedPayload} = decompress(Ssh1, payload(DecryptedPacket)), + {decoded, DecompressedPayload, NextPacketBytes, Ssh} + end; + aead -> + PacketLenBin = DecryptedPfx, + case decrypt(Ssh0, {PacketLenBin,EncryptedSfx,Mac}) of + {Ssh1, error} -> + {bad_mac, Ssh1}; + {Ssh1, DecryptedSfx} -> + DecryptedPacket = <<DecryptedPfx/binary, DecryptedSfx/binary>>, + {Ssh, DecompressedPayload} = decompress(Ssh1, payload(DecryptedPacket)), + {decoded, DecompressedPayload, NextPacketBytes, Ssh} + end + end. + + +get_length(common, EncryptedBuffer, #ssh{decrypt_block_size = BlockSize} = Ssh0) -> + case size(EncryptedBuffer) >= erlang:max(8, BlockSize) of + true -> + <<EncBlock:BlockSize/binary, EncryptedRest/binary>> = EncryptedBuffer, + {Ssh, + <<?UINT32(PacketLen),_/binary>> = Decrypted} = decrypt(Ssh0, EncBlock), + {ok, PacketLen, Decrypted, EncryptedRest, Ssh}; + false -> + get_more + end; +get_length(aead, EncryptedBuffer, Ssh) -> + case size(EncryptedBuffer) >= 4 of + true -> + <<?UINT32(PacketLen), EncryptedRest/binary>> = EncryptedBuffer, + {ok, PacketLen, <<?UINT32(PacketLen)>>, EncryptedRest, Ssh}; + false -> + get_more + end. + +pkt_type('AEAD_AES_128_GCM') -> aead; +pkt_type('AEAD_AES_256_GCM') -> aead; +pkt_type(_) -> common. + +payload(<<PacketLen:32, PaddingLen:8, PayloadAndPadding/binary>>) -> + PayloadLen = PacketLen - PaddingLen - 1, + <<Payload:PayloadLen/binary, _/binary>> = PayloadAndPadding, + Payload. sign(SigData, Hash, #'DSAPrivateKey'{} = Key) -> DerSignature = public_key:sign(SigData, Hash, Key), #'Dss-Sig-Value'{r = R, s = S} = public_key:der_decode('Dss-Sig-Value', DerSignature), <<R:160/big-unsigned-integer, S:160/big-unsigned-integer>>; +sign(SigData, Hash, Key = #'ECPrivateKey'{}) -> + DerEncodedSign = public_key:sign(SigData, Hash, Key), + #'ECDSA-Sig-Value'{r=R, s=S} = public_key:der_decode('ECDSA-Sig-Value', DerEncodedSign), + ssh_bits:encode([R,S], [mpint,mpint]); sign(SigData, Hash, Key) -> public_key:sign(SigData, Hash, Key). @@ -624,59 +1092,48 @@ verify(PlainText, Hash, Sig, {_, #'Dss-Parms'{}} = Key) -> <<R:160/big-unsigned-integer, S:160/big-unsigned-integer>> = Sig, Signature = public_key:der_encode('Dss-Sig-Value', #'Dss-Sig-Value'{r = R, s = S}), public_key:verify(PlainText, Hash, Signature, Key); +verify(PlainText, Hash, Sig, {#'ECPoint'{},_} = Key) -> + <<?UINT32(Rlen),R:Rlen/big-signed-integer-unit:8, + ?UINT32(Slen),S:Slen/big-signed-integer-unit:8>> = Sig, + Sval = #'ECDSA-Sig-Value'{r=R, s=S}, + DerEncodedSig = public_key:der_encode('ECDSA-Sig-Value',Sval), + public_key:verify(PlainText, Hash, DerEncodedSig, Key); verify(PlainText, Hash, Sig, Key) -> public_key:verify(PlainText, Hash, Sig, Key). -%% public key algorithms -%% -%% ssh-dss REQUIRED sign Raw DSS Key -%% ssh-rsa RECOMMENDED sign Raw RSA Key -%% x509v3-sign-rsa OPTIONAL sign X.509 certificates (RSA key) -%% x509v3-sign-dss OPTIONAL sign X.509 certificates (DSS key) -%% spki-sign-rsa OPTIONAL sign SPKI certificates (RSA key) -%% spki-sign-dss OPTIONAL sign SPKI certificates (DSS key) -%% pgp-sign-rsa OPTIONAL sign OpenPGP certificates (RSA key) -%% pgp-sign-dss OPTIONAL sign OpenPGP certificates (DSS key) -%% - -%% key exchange -%% -%% diffie-hellman-group1-sha1 REQUIRED -%% -%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% Encryption %% -%% chiphers -%% -%% 3des-cbc REQUIRED -%% three-key 3DES in CBC mode -%% blowfish-cbc OPTIONAL Blowfish in CBC mode -%% twofish256-cbc OPTIONAL Twofish in CBC mode, -%% with 256-bit key -%% twofish-cbc OPTIONAL alias for "twofish256-cbc" (this -%% is being retained for -%% historical reasons) -%% twofish192-cbc OPTIONAL Twofish with 192-bit key -%% twofish128-cbc OPTIONAL Twofish with 128-bit key -%% aes256-cbc OPTIONAL AES in CBC mode, -%% with 256-bit key -%% aes192-cbc OPTIONAL AES with 192-bit key -%% aes128-cbc RECOMMENDED AES with 128-bit key -%% serpent256-cbc OPTIONAL Serpent in CBC mode, with -%% 256-bit key -%% serpent192-cbc OPTIONAL Serpent with 192-bit key -%% serpent128-cbc OPTIONAL Serpent with 128-bit key -%% arcfour OPTIONAL the ARCFOUR stream cipher -%% idea-cbc OPTIONAL IDEA in CBC mode -%% cast128-cbc OPTIONAL CAST-128 in CBC mode -%% none OPTIONAL no encryption; NOT RECOMMENDED +%% Encryption %% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% encrypt_init(#ssh{encrypt = none} = Ssh) -> {ok, Ssh}; +encrypt_init(#ssh{encrypt = 'AEAD_AES_128_GCM', role = client} = Ssh) -> + IV = hash(Ssh, "A", 12*8), + <<K:16/binary>> = hash(Ssh, "C", 128), + {ok, Ssh#ssh{encrypt_keys = K, + encrypt_block_size = 16, + encrypt_ctx = IV}}; +encrypt_init(#ssh{encrypt = 'AEAD_AES_128_GCM', role = server} = Ssh) -> + IV = hash(Ssh, "B", 12*8), + <<K:16/binary>> = hash(Ssh, "D", 128), + {ok, Ssh#ssh{encrypt_keys = K, + encrypt_block_size = 16, + encrypt_ctx = IV}}; +encrypt_init(#ssh{encrypt = 'AEAD_AES_256_GCM', role = client} = Ssh) -> + IV = hash(Ssh, "A", 12*8), + <<K:32/binary>> = hash(Ssh, "C", 256), + {ok, Ssh#ssh{encrypt_keys = K, + encrypt_block_size = 16, + encrypt_ctx = IV}}; +encrypt_init(#ssh{encrypt = 'AEAD_AES_256_GCM', role = server} = Ssh) -> + IV = hash(Ssh, "B", 12*8), + <<K:32/binary>> = hash(Ssh, "D", 256), + {ok, Ssh#ssh{encrypt_keys = K, + encrypt_block_size = 16, + encrypt_ctx = IV}}; encrypt_init(#ssh{encrypt = '3des-cbc', role = client} = Ssh) -> IV = hash(Ssh, "A", 64), <<K1:8/binary, K2:8/binary, K3:8/binary>> = hash(Ssh, "C", 192), @@ -702,18 +1159,46 @@ encrypt_init(#ssh{encrypt = 'aes128-cbc', role = server} = Ssh) -> encrypt_block_size = 16, encrypt_ctx = IV}}; encrypt_init(#ssh{encrypt = 'aes128-ctr', role = client} = Ssh) -> - IV = hash(Ssh, "A", 128), + IV = hash(Ssh, "A", 128), <<K:16/binary>> = hash(Ssh, "C", 128), State = crypto:stream_init(aes_ctr, K, IV), {ok, Ssh#ssh{encrypt_keys = K, encrypt_block_size = 16, encrypt_ctx = State}}; +encrypt_init(#ssh{encrypt = 'aes192-ctr', role = client} = Ssh) -> + IV = hash(Ssh, "A", 128), + <<K:24/binary>> = hash(Ssh, "C", 192), + State = crypto:stream_init(aes_ctr, K, IV), + {ok, Ssh#ssh{encrypt_keys = K, + encrypt_block_size = 16, + encrypt_ctx = State}}; +encrypt_init(#ssh{encrypt = 'aes256-ctr', role = client} = Ssh) -> + IV = hash(Ssh, "A", 128), + <<K:32/binary>> = hash(Ssh, "C", 256), + State = crypto:stream_init(aes_ctr, K, IV), + {ok, Ssh#ssh{encrypt_keys = K, + encrypt_block_size = 16, + encrypt_ctx = State}}; encrypt_init(#ssh{encrypt = 'aes128-ctr', role = server} = Ssh) -> - IV = hash(Ssh, "B", 128), + IV = hash(Ssh, "B", 128), <<K:16/binary>> = hash(Ssh, "D", 128), State = crypto:stream_init(aes_ctr, K, IV), {ok, Ssh#ssh{encrypt_keys = K, encrypt_block_size = 16, + encrypt_ctx = State}}; +encrypt_init(#ssh{encrypt = 'aes192-ctr', role = server} = Ssh) -> + IV = hash(Ssh, "B", 128), + <<K:24/binary>> = hash(Ssh, "D", 192), + State = crypto:stream_init(aes_ctr, K, IV), + {ok, Ssh#ssh{encrypt_keys = K, + encrypt_block_size = 16, + encrypt_ctx = State}}; +encrypt_init(#ssh{encrypt = 'aes256-ctr', role = server} = Ssh) -> + IV = hash(Ssh, "B", 128), + <<K:32/binary>> = hash(Ssh, "D", 256), + State = crypto:stream_init(aes_ctr, K, IV), + {ok, Ssh#ssh{encrypt_keys = K, + encrypt_block_size = 16, encrypt_ctx = State}}. encrypt_final(Ssh) -> @@ -725,6 +1210,18 @@ encrypt_final(Ssh) -> encrypt(#ssh{encrypt = none} = Ssh, Data) -> {Ssh, Data}; +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), + IV = next_gcm_iv(IV0), + {Ssh#ssh{encrypt_ctx = IV}, Enc}; +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), + IV = next_gcm_iv(IV0), + {Ssh#ssh{encrypt_ctx = IV}, Enc}; encrypt(#ssh{encrypt = '3des-cbc', encrypt_keys = {K1,K2,K3}, encrypt_ctx = IV0} = Ssh, Data) -> @@ -740,6 +1237,14 @@ encrypt(#ssh{encrypt = 'aes128-cbc', encrypt(#ssh{encrypt = 'aes128-ctr', encrypt_ctx = State0} = Ssh, Data) -> {State, Enc} = crypto:stream_encrypt(State0,Data), + {Ssh#ssh{encrypt_ctx = State}, Enc}; +encrypt(#ssh{encrypt = 'aes192-ctr', + encrypt_ctx = State0} = Ssh, Data) -> + {State, Enc} = crypto:stream_encrypt(State0,Data), + {Ssh#ssh{encrypt_ctx = State}, Enc}; +encrypt(#ssh{encrypt = 'aes256-ctr', + encrypt_ctx = State0} = Ssh, Data) -> + {State, Enc} = crypto:stream_encrypt(State0,Data), {Ssh#ssh{encrypt_ctx = State}, Enc}. @@ -749,6 +1254,30 @@ encrypt(#ssh{encrypt = 'aes128-ctr', decrypt_init(#ssh{decrypt = none} = Ssh) -> {ok, Ssh}; +decrypt_init(#ssh{decrypt = 'AEAD_AES_128_GCM', role = client} = Ssh) -> + IV = hash(Ssh, "B", 12*8), + <<K:16/binary>> = hash(Ssh, "D", 128), + {ok, Ssh#ssh{decrypt_keys = K, + decrypt_block_size = 16, + decrypt_ctx = IV}}; +decrypt_init(#ssh{decrypt = 'AEAD_AES_128_GCM', role = server} = Ssh) -> + IV = hash(Ssh, "A", 12*8), + <<K:16/binary>> = hash(Ssh, "C", 128), + {ok, Ssh#ssh{decrypt_keys = K, + decrypt_block_size = 16, + decrypt_ctx = IV}}; +decrypt_init(#ssh{decrypt = 'AEAD_AES_256_GCM', role = client} = Ssh) -> + IV = hash(Ssh, "B", 12*8), + <<K:32/binary>> = hash(Ssh, "D", 256), + {ok, Ssh#ssh{decrypt_keys = K, + decrypt_block_size = 16, + decrypt_ctx = IV}}; +decrypt_init(#ssh{decrypt = 'AEAD_AES_256_GCM', role = server} = Ssh) -> + IV = hash(Ssh, "A", 12*8), + <<K:32/binary>> = hash(Ssh, "C", 256), + {ok, Ssh#ssh{decrypt_keys = K, + decrypt_block_size = 16, + decrypt_ctx = IV}}; decrypt_init(#ssh{decrypt = '3des-cbc', role = client} = Ssh) -> {IV, KD} = {hash(Ssh, "B", 64), hash(Ssh, "D", 192)}, @@ -780,12 +1309,40 @@ decrypt_init(#ssh{decrypt = 'aes128-ctr', role = client} = Ssh) -> {ok, Ssh#ssh{decrypt_keys = K, decrypt_block_size = 16, decrypt_ctx = State}}; +decrypt_init(#ssh{decrypt = 'aes192-ctr', role = client} = Ssh) -> + IV = hash(Ssh, "B", 128), + <<K:24/binary>> = hash(Ssh, "D", 192), + State = crypto:stream_init(aes_ctr, K, IV), + {ok, Ssh#ssh{decrypt_keys = K, + decrypt_block_size = 16, + decrypt_ctx = State}}; +decrypt_init(#ssh{decrypt = 'aes256-ctr', role = client} = Ssh) -> + IV = hash(Ssh, "B", 128), + <<K:32/binary>> = hash(Ssh, "D", 256), + State = crypto:stream_init(aes_ctr, K, IV), + {ok, Ssh#ssh{decrypt_keys = K, + decrypt_block_size = 16, + decrypt_ctx = State}}; decrypt_init(#ssh{decrypt = 'aes128-ctr', role = server} = Ssh) -> IV = hash(Ssh, "A", 128), <<K:16/binary>> = hash(Ssh, "C", 128), State = crypto:stream_init(aes_ctr, K, IV), {ok, Ssh#ssh{decrypt_keys = K, decrypt_block_size = 16, + decrypt_ctx = State}}; +decrypt_init(#ssh{decrypt = 'aes192-ctr', role = server} = Ssh) -> + IV = hash(Ssh, "A", 128), + <<K:24/binary>> = hash(Ssh, "C", 192), + State = crypto:stream_init(aes_ctr, K, IV), + {ok, Ssh#ssh{decrypt_keys = K, + decrypt_block_size = 16, + decrypt_ctx = State}}; +decrypt_init(#ssh{decrypt = 'aes256-ctr', role = server} = Ssh) -> + IV = hash(Ssh, "A", 128), + <<K:32/binary>> = hash(Ssh, "C", 256), + State = crypto:stream_init(aes_ctr, K, IV), + {ok, Ssh#ssh{decrypt_keys = K, + decrypt_block_size = 16, decrypt_ctx = State}}. @@ -795,8 +1352,22 @@ decrypt_final(Ssh) -> decrypt_ctx = undefined, decrypt_block_size = 8}}. +decrypt(Ssh, <<>>) -> + {Ssh, <<>>}; decrypt(#ssh{decrypt = none} = Ssh, Data) -> {Ssh, Data}; +decrypt(#ssh{decrypt = 'AEAD_AES_128_GCM', + decrypt_keys = K, + decrypt_ctx = IV0} = Ssh, Data = {_AAD,_Ctext,_Ctag}) -> + Dec = crypto:block_decrypt(aes_gcm, K, IV0, Data), % Dec = PlainText | error + IV = next_gcm_iv(IV0), + {Ssh#ssh{decrypt_ctx = IV}, Dec}; +decrypt(#ssh{decrypt = 'AEAD_AES_256_GCM', + decrypt_keys = K, + decrypt_ctx = IV0} = Ssh, Data = {_AAD,_Ctext,_Ctag}) -> + Dec = crypto:block_decrypt(aes_gcm, K, IV0, Data), % Dec = PlainText | error + IV = next_gcm_iv(IV0), + {Ssh#ssh{decrypt_ctx = IV}, Dec}; decrypt(#ssh{decrypt = '3des-cbc', decrypt_keys = Keys, decrypt_ctx = IV0} = Ssh, Data) -> {K1, K2, K3} = Keys, @@ -811,8 +1382,20 @@ decrypt(#ssh{decrypt = 'aes128-cbc', decrypt_keys = Key, decrypt(#ssh{decrypt = 'aes128-ctr', decrypt_ctx = State0} = Ssh, Data) -> {State, Enc} = crypto:stream_decrypt(State0,Data), + {Ssh#ssh{decrypt_ctx = State}, Enc}; +decrypt(#ssh{decrypt = 'aes192-ctr', + decrypt_ctx = State0} = Ssh, Data) -> + {State, Enc} = crypto:stream_decrypt(State0,Data), + {Ssh#ssh{decrypt_ctx = State}, Enc}; +decrypt(#ssh{decrypt = 'aes256-ctr', + decrypt_ctx = State0} = Ssh, Data) -> + {State, Enc} = crypto:stream_decrypt(State0,Data), {Ssh#ssh{decrypt_ctx = State}, Enc}. + +next_gcm_iv(<<Fixed:32, InvCtr:64>>) -> <<Fixed:32, (InvCtr+1):64>>. + + %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% Compression %% @@ -895,49 +1478,54 @@ decompress(#ssh{decompress = '[email protected]', decompress_ctx = Context, authe {Ssh, list_to_binary(Decompressed)}. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% MAC calculation %% -%% hmac-sha1 REQUIRED HMAC-SHA1 (digest length = key -%% length = 20) -%% hmac-sha1-96 RECOMMENDED first 96 bits of HMAC-SHA1 (digest -%% length = 12, key length = 20) -%% hmac-md5 OPTIONAL HMAC-MD5 (digest length = key -%% length = 16) -%% hmac-md5-96 OPTIONAL first 96 bits of HMAC-MD5 (digest -%% length = 12, key length = 16) -%% none OPTIONAL no MAC; NOT RECOMMENDED +%% MAC calculation %% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% send_mac_init(SSH) -> - case SSH#ssh.role of - client -> - KeySize =mac_key_size(SSH#ssh.send_mac), - Key = hash(SSH, "E", KeySize), - {ok, SSH#ssh { send_mac_key = Key }}; - server -> - KeySize = mac_key_size(SSH#ssh.send_mac), - Key = hash(SSH, "F", KeySize), - {ok, SSH#ssh { send_mac_key = Key }} + case pkt_type(SSH#ssh.send_mac) of + common -> + case SSH#ssh.role of + client -> + KeySize = mac_key_size(SSH#ssh.send_mac), + Key = hash(SSH, "E", KeySize), + {ok, SSH#ssh { send_mac_key = Key }}; + server -> + KeySize = mac_key_size(SSH#ssh.send_mac), + Key = hash(SSH, "F", KeySize), + {ok, SSH#ssh { send_mac_key = Key }} + end; + aead -> + %% Not applicable + {ok, SSH} end. send_mac_final(SSH) -> - {ok, SSH#ssh { send_mac = none, send_mac_key = undefined }}. + {ok, SSH#ssh {send_mac = none, + send_mac_key = undefined }}. + recv_mac_init(SSH) -> - case SSH#ssh.role of - client -> - Key = hash(SSH, "F", mac_key_size(SSH#ssh.recv_mac)), - {ok, SSH#ssh { recv_mac_key = Key }}; - server -> - Key = hash(SSH, "E", mac_key_size(SSH#ssh.recv_mac)), - {ok, SSH#ssh { recv_mac_key = Key }} + case pkt_type(SSH#ssh.recv_mac) of + common -> + case SSH#ssh.role of + client -> + Key = hash(SSH, "F", mac_key_size(SSH#ssh.recv_mac)), + {ok, SSH#ssh { recv_mac_key = Key }}; + server -> + Key = hash(SSH, "E", mac_key_size(SSH#ssh.recv_mac)), + {ok, SSH#ssh { recv_mac_key = Key }} + end; + aead -> + %% Not applicable + {ok, SSH} end. recv_mac_final(SSH) -> {ok, SSH#ssh { recv_mac = none, recv_mac_key = undefined }}. -mac(none, _ , _, _) -> +mac(none, _ , _, _) -> <<>>; mac('hmac-sha1', Key, SeqNum, Data) -> crypto:hmac(sha, Key, [<<?UINT32(SeqNum)>>, Data]); @@ -948,7 +1536,9 @@ mac('hmac-md5', Key, SeqNum, Data) -> mac('hmac-md5-96', Key, SeqNum, Data) -> crypto:hmac(md5, Key, [<<?UINT32(SeqNum)>>, Data], mac_digest_size('hmac-md5-96')); mac('hmac-sha2-256', Key, SeqNum, Data) -> - crypto:hmac(sha256, Key, [<<?UINT32(SeqNum)>>, Data]). + crypto:hmac(sha256, Key, [<<?UINT32(SeqNum)>>, Data]); +mac('hmac-sha2-512', Key, SeqNum, Data) -> + crypto:hmac(sha512, Key, [<<?UINT32(SeqNum)>>, Data]). %% return N hash bytes (HASH) hash(SSH, Char, Bits) -> @@ -956,8 +1546,20 @@ hash(SSH, Char, Bits) -> case SSH#ssh.kex of 'diffie-hellman-group1-sha1' -> fun(Data) -> crypto:hash(sha, Data) end; + 'diffie-hellman-group14-sha1' -> + fun(Data) -> crypto:hash(sha, Data) end; + 'diffie-hellman-group-exchange-sha1' -> fun(Data) -> crypto:hash(sha, Data) end; + 'diffie-hellman-group-exchange-sha256' -> + fun(Data) -> crypto:hash(sha256, Data) end; + + 'ecdh-sha2-nistp256' -> + fun(Data) -> crypto:hash(sha256,Data) end; + 'ecdh-sha2-nistp384' -> + fun(Data) -> crypto:hash(sha384,Data) end; + 'ecdh-sha2-nistp521' -> + fun(Data) -> crypto:hash(sha512,Data) end; _ -> exit({bad_algorithm,SSH#ssh.kex}) end, @@ -981,22 +1583,36 @@ hash(K, H, Ki, N, HASH) -> hash(K, H, <<Ki/binary, Kj/binary>>, N-128, HASH). kex_h(SSH, Key, E, F, K) -> + KeyBin = public_key:ssh_encode(Key, ssh2_pubkey), L = ssh_bits:encode([SSH#ssh.c_version, SSH#ssh.s_version, SSH#ssh.c_keyinit, SSH#ssh.s_keyinit, - ssh_message:encode_host_key(Key), E,F,K], + KeyBin, E,F,K], [string,string,binary,binary,binary, mpint,mpint,mpint]), - crypto:hash(sha,L). - + crypto:hash(sha((SSH#ssh.algorithms)#alg.kex), L). +%% crypto:hash(sha,L). + +kex_h(SSH, Curve, Key, Q_c, Q_s, K) -> + KeyBin = public_key:ssh_encode(Key, ssh2_pubkey), + L = ssh_bits:encode([SSH#ssh.c_version, SSH#ssh.s_version, + SSH#ssh.c_keyinit, SSH#ssh.s_keyinit, + KeyBin, Q_c, Q_s, K], + [string,string,binary,binary,binary, + mpint,mpint,mpint]), + crypto:hash(sha(Curve), L). kex_h(SSH, Key, Min, NBits, Max, Prime, Gen, E, F, K) -> + KeyBin = public_key:ssh_encode(Key, ssh2_pubkey), L = if Min==-1; Max==-1 -> + %% flag from 'ssh_msg_kex_dh_gex_request_old' + %% It was like this before that message was supported, + %% why? Ts = [string,string,binary,binary,binary, uint32, mpint,mpint,mpint,mpint,mpint], ssh_bits:encode([SSH#ssh.c_version,SSH#ssh.s_version, SSH#ssh.c_keyinit,SSH#ssh.s_keyinit, - ssh_message:encode_host_key(Key), NBits, Prime, Gen, E,F,K], + KeyBin, NBits, Prime, Gen, E,F,K], Ts); true -> Ts = [string,string,binary,binary,binary, @@ -1004,16 +1620,30 @@ kex_h(SSH, Key, Min, NBits, Max, Prime, Gen, E, F, K) -> mpint,mpint,mpint,mpint,mpint], ssh_bits:encode([SSH#ssh.c_version,SSH#ssh.s_version, SSH#ssh.c_keyinit,SSH#ssh.s_keyinit, - ssh_message:encode_host_key(Key), Min, NBits, Max, + KeyBin, Min, NBits, Max, Prime, Gen, E,F,K], Ts) end, - crypto:hash(sha,L). + crypto:hash(sha((SSH#ssh.algorithms)#alg.kex), L). + +sha(secp256r1) -> sha256; +sha(secp384r1) -> sha384; +sha(secp521r1) -> sha512; +sha('diffie-hellman-group1-sha1') -> sha; +sha('diffie-hellman-group14-sha1') -> sha; +sha('diffie-hellman-group-exchange-sha1') -> sha; +sha('diffie-hellman-group-exchange-sha256') -> sha256; +sha(?'secp256r1') -> sha(secp256r1); +sha(?'secp384r1') -> sha(secp384r1); +sha(?'secp521r1') -> sha(secp521r1). + + mac_key_size('hmac-sha1') -> 20*8; mac_key_size('hmac-sha1-96') -> 20*8; mac_key_size('hmac-md5') -> 16*8; mac_key_size('hmac-md5-96') -> 16*8; mac_key_size('hmac-sha2-256')-> 32*8; +mac_key_size('hmac-sha2-512')-> 512; mac_key_size(none) -> 0. mac_digest_size('hmac-sha1') -> 20; @@ -1021,6 +1651,9 @@ mac_digest_size('hmac-sha1-96') -> 12; mac_digest_size('hmac-md5') -> 20; mac_digest_size('hmac-md5-96') -> 12; 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(none) -> 0. peer_name({Host, _}) -> @@ -1032,12 +1665,91 @@ peer_name({Host, _}) -> %% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -dh_group1() -> - {2, 16#FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF}. +dh_group('diffie-hellman-group1-sha1') -> ?dh_group1; +dh_group('diffie-hellman-group14-sha1') -> ?dh_group14. -dh_gen_key(G, P, _) -> - {Public, Private} = crypto:generate_key(dh, [P, G]), - {crypto:bytes_to_integer(Private), crypto:bytes_to_integer(Public)}. +%%%---------------------------------------------------------------- +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). + + +ecdh_curve('ecdh-sha2-nistp256') -> secp256r1; +ecdh_curve('ecdh-sha2-nistp384') -> secp384r1; +ecdh_curve('ecdh-sha2-nistp521') -> secp521r1. + + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%% +%% Utils for default_algorithms/1 and supported_algorithms/1 +%% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +supported_algorithms(Key, [{client2server,BL1},{server2client,BL2}]) -> + [{client2server,As1},{server2client,As2}] = supported_algorithms(Key), + [{client2server,As1--BL1},{server2client,As2--BL2}]; +supported_algorithms(Key, BlackList) -> + supported_algorithms(Key) -- BlackList. + + +select_crypto_supported(L) -> + Sup = [{ec_curve,crypto_supported_curves()} | 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); + ({Tag,{Name,Len}}) when is_integer(Len) -> + crypto_name_supported(Tag,Name,Supported) andalso + len_supported(Name,Len) + end, Conditions). + +crypto_name_supported(Tag, CryptoName, Supported) -> + lists:member(CryptoName, proplists:get_value(Tag,Supported,[])). + +len_supported(Name, Len) -> + try + case Name of + aes_ctr -> + {_, <<_/binary>>} = + %% Test encryption + crypto:stream_encrypt(crypto:stream_init(Name, <<0:Len>>, <<0:128>>), <<"">>); + aes_gcm -> + {<<_/binary>>, <<_/binary>>} = + crypto:block_encrypt(Name, + _Key = <<0:Len>>, + _IV = <<0:12/unsigned-unit:8>>, + {<<"AAD">>,"PT"}) + end + of + _ -> true + catch + _:_ -> false + end. + + +same(Algs) -> [{client2server,Algs}, {server2client,Algs}]. + + +%% default_algorithms(kex) -> % Example of how to disable an algorithm +%% supported_algorithms(kex, ['ecdh-sha2-nistp521']); + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%% +%% Other utils +%% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% trim_tail(Str) -> lists:reverse(trim_head(lists:reverse(Str))). diff --git a/lib/ssh/src/ssh_transport.hrl b/lib/ssh/src/ssh_transport.hrl index 27d3e32355..fd43326f0d 100644 --- a/lib/ssh/src/ssh_transport.hrl +++ b/lib/ssh/src/ssh_transport.hrl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2010. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -28,9 +29,12 @@ -define(DEFAULT_CLIENT_VERSION, {2, 0}). -define(DEFAULT_SERVER_VERSION, {2, 0}). --define(DEFAULT_DH_GROUP_MIN, 512). --define(DEFAULT_DH_GROUP_NBITS, 1024). --define(DEFAULT_DH_GROUP_MAX, 4096). + +-define(MAX_NUM_ALGORITHMS, 200). + +-define(DEFAULT_DH_GROUP_MIN, 1024). +-define(DEFAULT_DH_GROUP_NBITS, 2048). +-define(DEFAULT_DH_GROUP_MAX, 8192). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% @@ -108,8 +112,9 @@ %% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% diffie-hellman-group1-sha1 --define(SSH_MSG_KEXDH_INIT, 30). +%% diffie-hellman-group1-sha1 | diffie-hellman-group14-sha1 + +-define(SSH_MSG_KEXDH_INIT, 30). -define(SSH_MSG_KEXDH_REPLY, 31). -record(ssh_msg_kexdh_init, @@ -133,7 +138,7 @@ %% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% diffie-hellman-group-exchange-sha1 +%% diffie-hellman-group-exchange-sha1 | diffie-hellman-group-exchange-sha256 -define(SSH_MSG_KEX_DH_GEX_REQUEST_OLD, 30). -define(SSH_MSG_KEX_DH_GEX_REQUEST, 34). -define(SSH_MSG_KEX_DH_GEX_GROUP, 31). @@ -170,7 +175,36 @@ h_sig }). +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%% +%% KEY ECDH messages +%% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +%% ecdh-sha2-nistp256 | ecdh-sha2-nistp384 | ecdh-sha2-nistp521 + +-define(SSH_MSG_KEX_ECDH_INIT, 30). +-define(SSH_MSG_KEX_ECDH_REPLY, 31). + +-record(ssh_msg_kex_ecdh_init, + { + q_c % string (client's ephemeral public key octet string) + }). + +-record(ssh_msg_kex_ecdh_reply, + { + public_host_key, % string (server's public host key) (k_s) + q_s, % string (server's ephemeral public key octet string) + h_sig % string (the signature on the exchange hash) + }). + + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%% %% error codes +%% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + -define(SSH_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT, 1). -define(SSH_DISCONNECT_PROTOCOL_ERROR, 2). -define(SSH_DISCONNECT_KEY_EXCHANGE_FAILED, 3). @@ -188,48 +222,20 @@ -define(SSH_DISCONNECT_ILLEGAL_USER_NAME, 15). -%%%---------------------------------------------------------------------- -%%% # DH_14_xxx -%%% Description: Oakley group 14 prime numbers and generator. Used in -%%% diffie-hellman-group1-sha1 key exchange method. -%%%---------------------------------------------------------------------- -%%%---------------------------------------------------------------------- -%%% # DH_14_P -%%% Description: Prime for this group -%%%---------------------------------------------------------------------- - --define(DH_14_P, - <<000,000,000,129,000,255,255,255,255,255,255,255,255,201,015,218, - 162,033,104,194,052,196,198,098,139,128,220,028,209,041,002,078, - 008,138,103,204,116,002,011,190,166,059,019,155,034,081,074,008, - 121,142,052,004,221,239,149,025,179,205,058,067,027,048,043,010, - 109,242,095,020,055,079,225,053,109,109,081,194,069,228,133,181, - 118,098,094,126,198,244,076,066,233,166,055,237,107,011,255,092, - 182,244,006,183,237,238,056,107,251,090,137,159,165,174,159,036, - 017,124,075,031,230,073,040,102,081,236,230,083,129,255,255,255, - 255,255,255,255,255>>). - -%%%---------------------------------------------------------------------- -%%% # DH_14_G -%%% Description: Generator for DH_14_P. -%%%---------------------------------------------------------------------- - --define(DH_14_G, <<0,0,0,1,2>>). - -%%%---------------------------------------------------------------------- -%%% # DH_14_Q -%%% Description: Group order (DH_14_P - 1) / 2. -%%%---------------------------------------------------------------------- - --define(DH_14_Q, - <<000,000,000,128,127,255,255,255,255,255,255,255,228,135,237,081, - 016,180,097,026,098,099,049,069,192,110,014,104,148,129,039,004, - 069,051,230,058,001,005,223,083,029,137,205,145,040,165,004,060, - 199,026,002,110,247,202,140,217,230,157,033,141,152,021,133,054, - 249,047,138,027,167,240,154,182,182,168,225,034,242,066,218,187, - 049,047,063,099,122,038,033,116,211,027,246,181,133,255,174,091, - 122,003,091,246,247,028,053,253,173,068,207,210,215,079,146,008, - 190,037,143,243,036,148,051,040,246,115,041,192,255,255,255,255, - 255,255,255,255>>). +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%% +%% groups +%% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +%%% rfc 2489, ch 6.2 +%%% Size 1024 +-define(dh_group1, + {2, 16#FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF}). + +%%% rfc 3526, ch3 +%%% Size 2048 +-define(dh_group14, + {2, 16#FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3DC2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F83655D23DCA3AD961C62F356208552BB9ED529077096966D670C354E4ABC9804F1746C08CA18217C32905E462E36CE3BE39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF6955817183995497CEA956AE515D2261898FA051015728E5A8AACAA68FFFFFFFFFFFFFFFF}). -endif. % -ifdef(ssh_transport). diff --git a/lib/ssh/src/ssh_userauth.hrl b/lib/ssh/src/ssh_userauth.hrl index 7c38719d92..935999b9d1 100644 --- a/lib/ssh/src/ssh_userauth.hrl +++ b/lib/ssh/src/ssh_userauth.hrl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2005-2011. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_xfer.erl b/lib/ssh/src/ssh_xfer.erl index 2743b704f1..b8dff1c533 100644 --- a/lib/ssh/src/ssh_xfer.erl +++ b/lib/ssh/src/ssh_xfer.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2005-2014. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/ssh_xfer.hrl b/lib/ssh/src/ssh_xfer.hrl index 8dc9a40f92..fe1405ccae 100644 --- a/lib/ssh/src/ssh_xfer.hrl +++ b/lib/ssh/src/ssh_xfer.hrl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2005-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/sshc_sup.erl b/lib/ssh/src/sshc_sup.erl index e6b4b681a4..8ee6aacfb5 100644 --- a/lib/ssh/src/sshc_sup.erl +++ b/lib/ssh/src/sshc_sup.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% diff --git a/lib/ssh/src/sshd_sup.erl b/lib/ssh/src/sshd_sup.erl index 60222f5172..7975b146fb 100644 --- a/lib/ssh/src/sshd_sup.erl +++ b/lib/ssh/src/sshd_sup.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% 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 %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -26,8 +27,10 @@ -behaviour(supervisor). +-include("ssh.hrl"). + -export([start_link/1, start_child/1, stop_child/1, - stop_child/2, system_name/1]). + stop_child/3, system_name/1]). %% Supervisor callback -export([init/1]). @@ -40,13 +43,14 @@ start_link(Servers) -> start_child(ServerOpts) -> Address = proplists:get_value(address, ServerOpts), - Port = proplists:get_value(port, ServerOpts), - case ssh_system_sup:system_supervisor(Address, Port) of + Port = proplists:get_value(port, ServerOpts), + Profile = proplists:get_value(profile, proplists:get_value(ssh_opts, ServerOpts), ?DEFAULT_PROFILE), + case ssh_system_sup:system_supervisor(Address, Port, Profile) of undefined -> Spec = child_spec(Address, Port, ServerOpts), case supervisor:start_child(?MODULE, Spec) of {error, already_present} -> - Name = id(Address, Port), + Name = id(Address, Port, Profile), supervisor:delete_child(?MODULE, Name), supervisor:start_child(?MODULE, Spec); Reply -> @@ -60,8 +64,8 @@ start_child(ServerOpts) -> stop_child(Name) -> supervisor:terminate_child(?MODULE, Name). -stop_child(Address, Port) -> - Name = id(Address, Port), +stop_child(Address, Port, Profile) -> + Name = id(Address, Port, Profile), stop_child(Name). system_name(SysSup) -> @@ -87,7 +91,8 @@ init([Servers]) -> %%% Internal functions %%%========================================================================= child_spec(Address, Port, ServerOpts) -> - Name = id(Address, Port), + Profile = proplists:get_value(profile, proplists:get_value(ssh_opts, ServerOpts), ?DEFAULT_PROFILE), + Name = id(Address, Port,Profile), StartFunc = {ssh_system_sup, start_link, [ServerOpts]}, Restart = temporary, Shutdown = infinity, @@ -95,8 +100,13 @@ child_spec(Address, Port, ServerOpts) -> Type = supervisor, {Name, StartFunc, Restart, Shutdown, Type, Modules}. -id(Address, Port) -> - {server, ssh_system_sup, Address, Port}. +id(Address, Port, Profile) -> + case is_list(Address) of + true -> + {server, ssh_system_sup, any, Port, Profile}; + false -> + {server, ssh_system_sup, Address, Port, Profile} + end. system_name([], _ ) -> undefined; |