This document describes the changes made to the SSL application.
Fixed a file cache bug which caused problems when the same file was used for both cert and cacert.
Allow
Fixed ssl:setopts(Socket, binary) which didn't work for 'new' ssl.
.Own Id: OTP-8441
Do a controlled shutdown if a non ssl packet arrives as the first packet.
Own Id: OTP-8459 Aux Id: seq11505
Fixed session reuse (in new_ssl), thanks Wil Tan.
Send CA list during Certificate Request (in new_ssl) , thanks Wil Tan.
Own Id: OTP-8372
A ticker process could potentially be blocked indefinitely trying to send a tick to a node not responding. If this happened, the connection would not be brought down as it should.
This requires erts-5.7.4 and kernel-2.13.4 or later to be able to get the erlang distribution over ssl to work.
Own Id: OTP-8218
The documentation is now built with open source tools (xsltproc and fop) that exists on most platforms. One visible change is that the frames are removed.
Own Id: OTP-8250
Code cleanup from Kostis.
Own Id: OTP-8260
The ssl:ssl_accept/3 issue was not properly fixed in the previous patch, see OTP-8244.
Own Id: OTP-8275 Aux Id: seq11451
Allow clients to not send certificates if option
Own Id: OTP-8224
A ssl:ssl_accept/3 could crash a connection if the timing was wrong.
Removed info message if the socket closed without a proper disconnect from the ssl layer.
ssl:send/2 is now blocking until the message is sent.
Own Id: OTP-8244 Aux Id: seq11420
A client could avoid a certificate check if the client code didn't send the requested certificate.
Own Id: OTP-8137
Packet handling was not implemented correctly.
Inet option handling support have been improved.
The
Own Id: OTP-8011 Aux Id: seq11287
A "new_ssl" socket was not closed if the controlling process died without calling ssl:close/1.
Own Id: OTP-7963 Aux Id: seq11276
Fixed bug that caused the ssl handshake finished message to be calculated wrongly under the circumstances that the server did not send the trusted cert and that the previous cert did not have the extension telling us the trusted certs name. This manifested it self as bad_record_mac alert from the server.
Own Id: OTP-7878
The cacertsfile option is now optional for ssl servers.
Own Id: OTP-7656
For the ssl client the options cacertfile, certfile and keyfile are now optional as they are not always needed depending on configuration of the client itself and the configuration of the server. Also as PEM-files may contain more than one entry the keyfile option will default to the same file as given by the certfile option.
Own Id: OTP-7870
Added new ssl client option verify_fun.
Own Id: OTP-7871
Error log entries are now formatted correctly.
Own Id: OTP-7258
All handling of X509-certificates and public keys have been moved to the new application public_key.
Own Id: OTP-6894
New ssl now supports SSL-3.0 and TLS-1.0
Own Id: OTP-7037
New ssl now supports all inet-packet types.
Own Id: OTP-7039
The new ssl-server is now able to send a certificate request to the client. However new options may be introduced later to fully support all features regarding certificate requests.
Own Id: OTP-7150
Running erlang distribution over ssl don't work as described in the documentation.
Own Id: OTP-7536
ssl_prim.erl was passing an FD rather than an #sslsocket to ssl_broker:ssl_accept_prim. This could cause problems in the deprecated accept function, this will not cause any more problems however this function is deprecated!
Own Id: OTP-6926
Erlang distribution over ssl was broken after R11B-0, this has now been fixed.
Own Id: OTP-7004
All inet options are available in the new ssl implementation that is released as a alfa in ssl-3.9 and will replace the old implementation in ssl-4.0. This will not be fixed in the old implementation.
Own Id: OTP-4677
The new ssl implementation released as a alfa in this version supports upgrading of a tcp connection to a ssl connection so that http client and servers may implement RFC 2817.
Own Id: OTP-5510
A new implementation of ssl is released as a alfa version in ssl-3.9 it will later replace the old implementation in ssl-4.0. The new implementation can be accessed by providing the option {ssl_imp, new} to the ssl:connect and ssl:listen functions.
The new implementation is Erlang based and all logic is in Erlang and only payload encryption calculations are done in C via the crypto application. The main reason for making a new implementation is that the old solution was very crippled as the control of the ssl-socket was deep down in openssl making it hard if not impossible to support all inet options, ipv6 and upgrade of a tcp connection to a ssl connection. The alfa version has a few limitations that will be removed before the ssl-4.0 release. Main differences and limitations in the alfa are listed below.
Own Id: OTP-6619
New ssl implementation, released as alfa in ssl-3.9, supports ipv6. It will not be supported in the old implementation.
Own Id: OTP-6637 Aux Id: OTP-6636
Removed use of
Own Id: OTP-6689
A bug in ssl_accept could cause all ssl
connections to hang when a connection
attempt was closed by the client while
the server was in
Own Id: OTP-6612 Aux Id: seq10599
SSL now uses a two-phase accept, with a separate accept calls for the socket and the ssl protocol. This avoids timeouts when a client doesn't initiate ssl handshake.
With the old implementation of accept, the server was locked by a client, if the client didn't do proper ssl handshake.
Own Id: OTP-6418 Aux Id: seq10105
An integer array pointing to a struct pollfd array, is now reset before file descriptors are collected to be included in a call to poll(). This is to prevent file descriptors to be mixed up.
Own Id: OTP-6084
The generation of the module ssl_pkix_oid contained multiple identifiers, which made the mapping between atoms and identifiers not one-to-one.
Own Id: OTP-6085
The state of a connection in active mode could be in a restrictive state, so that an internal tcp_closed message was incorrectly considered illegal, resulting in a premature termination of the connection process.
Own Id: OTP-5972 Aux Id: seq10188
Erlang distribution over SSL was broken. Corrected. (Thanks to Fredrik Thulin.)
Own Id: OTP-5863
The port program for the ssl application could waste huge amounts of CPU time if a write could not be completed directly and was put in the write queue. (Only on platforms where poll() is used, such as Solaris and Linux.)
Own Id: OTP-5784
A process reading only a portion of a sufficiently large amount of data from an accepted socket, and then quering the ssl library (e.g. ssl:getpeername()), would cause a global deadlock in the esock port program.
Own Id: OTP-5702
A spelling error in the module
Own Id: OTP-5708
Because fopen() on Solaris 8 can't handle file descriptor numbers above 255, reading of certificate files would fail if all file descriptors below 256 were in use (typically, if many connections were open). This problem has been worked around.
The ssl application's port program used to use select(), which meant that it could not handle more than FD_SETSIZE file descriptors (usually 1024). To eliminate that limitation, poll() is now used on all platforms that support it.
Solaris/Sparc, 64-bit emulator: The SO_REUSEADDR option was not set for listen sockets, which essentially made the ssl application unusable. Corrected.
The default listen queue size for ssl port program was changed to 128 (from 5).
Own Id: OTP-5755 Aux Id: seq10068
The R/W buffer length i esock.c was too small. It has been increased from 4k to 32k.
Own Id: OTP-5620
A configuration option for choosing protocol versions has
been added (
Own Id: OTP-5429 Aux Id: seq9755
Linked in drivers in the crypto, and asn1 applications are now compiled with the -D_THREAD_SAFE and -D_REENTRANT switches on unix when the emulator has thread support enabled.
Linked in drivers on MacOSX are not compiled with the undocumented -lbundle1.o switch anymore. Thanks to Sean Hinde who sent us a patch.
Linked in driver in crypto, and port programs in ssl, now compiles on OSF1.
Minor makefile improvements in runtime_tools.
Own Id: OTP-5346
Own Id: OTP-4882
When a file descriptor was marked for closing, and and end-of-file condition had already been detected, the file descriptor was never closed.
Own Id: OTP-5093 Aux Id: seq8806
When the number of open file descriptors reached FD_SETSIZE, the SSL port program entered a busy loop.
Own Id: OTP-5094 Aux Id: seq8806
The SSL application now supports SSL sessions for servers, which typically speeds up HTTP requests from browsers.
Own Id: OTP-5095
The UTF8String type is now defined in asn1-1.4.4.2 and later. Therefore the definitions of UTF8String has been removed from the ASN.1 modules PKIX1Explicit88.asn1 and PKIXAttributeCertificate.asn1. The SSL application can now only be built using asn-1.4.4.2 or later.
OwnId: OTP-4971.
See SSL-3.0.
An unexpected object identifier would crash
OwnId: OTP-4771.
See SSL-3.0.
The
OwnId: OTP-3146
The Erlang SSL application is now based on OpenSSL version 0.9.7a. OpenSSL 0.9.6 should also work.
OwnId: OTP-4002
When connecting it is now possible to bind to a local address and local port.
OwnId: OTP-4675
The
OwnId: OTP-4676
The new functions
OwnId: OTP-4680
Aux Id: seq7688
The function
OwnId: OTP-4681
New User's Guide documentation has been added.
OwnId: OTP-4682
The old
OwnId: OTP-4683
The use of ephemeral RSA keys is now supported. It is a global configuration option (see the ssl(6) manual page).
OwnId: OTP-4691.
The option
OwnId: OTP-3146
There was a synchronization error at closing of an SSL connection.
OwnId: OTP-4435
Aux Id: seq7534
C macros in
OwnId: OTP-4674
The
OwnId: OTP-4678
The
OwnId: OTP-4679
Change of controlling process in not OTP compliant.
OwnId; OTP-4712
There is still no way to restrict the cipher sizes.
OwnId: OTP-4712
The
OwnId: OTP-4677
There is currently no way to restrict the SSL/TLS protocol versions to use. In a future release this will be supported as a configuration option, and as an option for each connection as well.
OwnId: OTP-4711.
There was a synchronization error at closing, which could result in that an SSL socket was removed prematurely, resulting in that a user process referring to it received an unexpected exit.
OwnId: OTP-4435
Aux Id: seq7600
See SSL 2.2 .
Setting of the option `nodelay' caused the SSL port program to dump core.
OwnId: OTP-4380
Aux Id: -
Setting of the option '{active, once}' in
OwnId: OTP-4380
Aux Id: -
A self-signed peer certificate was always rejected with the error `eselfsignedcert', irrespective of the `depth' value.
OwnId: OTP-4374
Aux Id: seq7417
See SSL 2.2 .
All TCP options allowed in gen_tcp, are now also allowed in
SSL, except the option
OwnId: OTP-4305, OTP-4159
The roles of the SSLeay and OpenSSL packages has been clarified in the ssl(6) application manual page. Also the URLs from which to download SSLeay has been updated.
OwnId: OTP-4002
Aux Id: seq5269
A call to
OwnId: OTP-4016
Aux Id: seq7006
Use of the option
OwnId: OTP-4070
Aux Id:
A bug caused the Erlang distribution over ssl to fail. This bug has now been fixed.
OwnId: OTP-4072
Aux Id:
On Windows when the SSL port program encountered an error code not anticipated it crashed.
OwnId: OTP-4132
Aux Id:
The
OwnId: OTP-3775
Aux Id: seq4991
Sometimes the SSL portprogram would loop in an accept loop, without terminating even when the SSL application was stopped..
OwnId: OTP-3691
Functions have been added to SSL to experimentally support Erlang distribution.
The 2.2.1 version of SSL provides code replacement in runtime by upgrading from, or downgrading to, versions 2.1 and 2.2.
The restriction that only the creator of an SSL socket can read from and write to the socket has been lifted.
OwnId: OTP-3301
The option
OwnId: OTP-3302
Setting of a CA certificate file with the
A work-around is to set the OS environment variable
OwnId: OTP-3146
When changing controlling process of an SSL socket, a temporary process is started, which is not gen_server compliant.
OwnId: OTP-3146
Although there is a
OwnId: OTP-3146
There is currently no way to restrict the cipher sizes.
OwnId: OTP-3146
The set of possible error reasons has been extended to contain diagnostics on erroneous certificates and failures to verify certificates.
OwnId: OTP-3145
The maximum number of simultaneous SSL connections on Windows has been increased from 31 to 127.
OwnId: OTP-3145
A dead-lock occurring when write queues are not empty has been removed.
OwnId: OTP-3145
Error reasons have been unified and changed.
(** POTENTIAL INCOMPATIBILITY **)
OwnId: OTP-3145
On Windows a check of the existence of the environment
variable
OwnId: OTP-3145
An error in the setting of the
OwnId: OTP-3145
The confounded notions of verify mode and verify depth has
been corrected. The option
(** POTENTIAL INCOMPATIBILITY **)
OwnId: OTP-3145
Setting of a CA certificate file with the
A work-around is to set the OS environment variable
OwnId: OTP-3146
When changing controlling process of an SSL socket, a temporary process is started, which is not gen_server compliant.
OwnId: OTP-3146
Although there is a
OwnId: OTP-3146
There is currently no way to restrict the cipher sizes.
OwnId: OTP-3146
A complete new version of SSL with separate I/O channels for all connections with non-blocking I/O multiplexing.