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676 commits

Author SHA1 Message Date
Matt Caswell
2e7dc7cd68 Never expose ssl->bbio in the public API.
This is adapted from BoringSSL commit 2f87112b963.

This fixes a number of bugs where the existence of bbio was leaked in the
public API and broke things.

- SSL_get_wbio returned the bbio during the handshake. It must always return
  the BIO the consumer configured. In doing so, some internal accesses of
  SSL_get_wbio should be switched to ssl->wbio since those want to see bbio.

- The logic in SSL_set_rfd, etc. (which I doubt is quite right since
  SSL_set_bio's lifetime is unclear) would get confused once wbio got
  wrapped. Those want to compare to SSL_get_wbio.

- If SSL_set_bio was called mid-handshake, bbio would get disconnected and
  lose state. It forgets to reattach the bbio afterwards. Unfortunately,
  Conscrypt does this a lot. It just never ended up calling it at a point
  where the bbio would cause problems.

- Make more explicit the invariant that any bbio's which exist are always
  attached. Simplify a few things as part of that.

RT#4572

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-07-20 13:08:08 +01:00
FdaSilvaYY
e8aa8b6c8f Fix a few if(, for(, while( inside code.
Fix some indentation at the same time

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1292)
2016-07-20 07:21:53 -04:00
Viktor Dukhovni
5ae4ceb92c Perform DANE-EE(3) name checks by default
In light of potential UKS (unknown key share) attacks on some
applications, primarily browsers, despite RFC761, name checks are
by default applied with DANE-EE(3) TLSA records.  Applications for
which UKS is not a problem can optionally disable DANE-EE(3) name
checks via the new SSL_CTX_dane_set_flags() and friends.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-07-12 10:16:34 -04:00
FdaSilvaYY
f430ba31ac Spelling... and more spelling
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1245)
2016-06-22 00:26:10 +02:00
Kurt Roeckx
325cfa8531 Don't compare a just free()d pointer
Found by tis-interpreter

Reviewed-by: Rich Salz <rsalz@openssl.org>

GH: #1173
2016-06-11 16:43:49 +02:00
Rich Salz
e417070c9f Add some accessor API's
GH1098: Add X509_get_pathlen() (and a test)
GH1097:  Add SSL_is_dtls() function.

Documented.

Reviewed-by: Matt Caswell <matt@openssl.org>
2016-06-08 11:37:06 -04:00
Todd Short
e2bb9b9bf3 Always use session_ctx when removing a session
Sessions are stored on the session_ctx, which doesn't change after
SSL_set_SSL_CTX().

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
2016-06-08 15:22:41 +01:00
Dr. Stephen Henson
cc7113e8de return error in ct_move_scts()
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
2016-05-31 13:02:20 +01:00
Matt Caswell
464175692f Simplify SSL BIO buffering logic
The write BIO for handshake messages is bufferred so that we only write
out to the network when we have a complete flight. There was some
complexity in the buffering logic so that we switched buffering on and
off at various points through out the handshake. The only real reason to
do this was historically it complicated the state machine when you wanted
to flush because you had to traverse through the "flush" state (in order
to cope with NBIO). Where we knew up front that there was only going to
be one message in the flight we switched off buffering to avoid that.

In the new state machine there is no longer a need for a flush state so
it is simpler just to have buffering on for the whole handshake. This
also gives us the added benefit that we can simply call flush after every
flight even if it only has one message in it. This means that BIO authors
can implement their own buffering strategies and not have to be aware of
the state of the SSL object (previously they would have to switch off
their own buffering during the handshake because they could not rely on
a flush being received when they really needed to write data out). This
last point addresses GitHub Issue #322.

Reviewed-by: Andy Polyakov <appro@openssl.org>
2016-05-20 14:11:11 +01:00
Viktor Dukhovni
f75b34c8c8 When strict SCT fails record verification failure
Since with SSL_VERIFY_NONE, the connection may continue and the
session may even be cached, we should save some evidence that the
chain was not sufficiently verified and would have been rejected
with SSL_VERIFY_PEER.  To that end when a CT callback returs failure
we set the verify result to X509_V_ERR_NO_VALID_SCTS.

Note: We only run the CT callback in the first place if the verify
result is still X509_V_OK prior to start of the callback.

RT #4502

Reviewed-by: Tim Hudson <tjh@openssl.org>
2016-05-19 00:25:42 -04:00
Rich Salz
846e33c729 Copyright consolidation 01/10
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2016-05-17 14:19:19 -04:00
TJ Saunders
4e2e1ec9d5 session tickets: Use sizeof() for the various fields
Signed-off-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Matt Caswell <matt@openssl.org>

GH: #515, MR: #2153
2016-05-16 20:42:21 +02:00
Alessandro Ghedini
6546e9b221 Add SSL_client_version() getter function
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
2016-05-16 15:58:52 +01:00
jfigus
ba261f718b Propagate tlsext_status_type from SSL_CTX to SSL
To allow OCSP stapling to work with libcurl.

Github PR #200

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
2016-05-16 14:42:30 +01:00
FdaSilvaYY
c5ebfcab71 Unify <TYPE>_up_ref methods signature and behaviour.
Add a status return value instead of void.
Add some sanity checks on reference counter value.
Update the docs.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
2016-05-16 10:17:33 +01:00
FdaSilvaYY
dccd20d1b5 fix tab-space mixed indentation
No code change

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
2016-05-09 09:09:55 +01:00
Matt Caswell
fc7f190c73 Handle no async jobs in libssl
If the application has limited the size of the async pool using
ASYNC_init_thread() then we could run out of jobs while trying to start a
libssl io operation. However libssl was failing to handle this and treating
it like a fatal error. It should not be fatal...we just need to retry when
there are jobs available again.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-05-05 19:39:14 +01:00
FdaSilvaYY
25a807bcb9 Add checks on CRYPTO_new_ex_data return value
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/996)
2016-04-28 14:37:41 -04:00
FdaSilvaYY
8483a003bf various spelling fixes
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/952)
2016-04-28 14:22:26 -04:00
Matt Caswell
b3bd3d5af8 Don't leak memory on error path in dane_ctx_enable()
The function dane_ctx_enable() allocated some memory that it did not
free in an error path.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-04-28 13:13:09 +01:00
Matt Caswell
bfb155c187 split_send_fragment should always be less than or equal to max_send_fragment
A bug meant that SSL_CTRL_SET_MAX_SEND_FRAGMENT was not adjusting
split_send_fragment properly.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-04-27 09:22:40 +01:00
Viktor Dukhovni
9f6b22b814 Enabled DANE only when at least one TLSA RR was added
It is up to the caller of SSL_dane_tlsa_add() to take appropriate
action when no records are added successfully or adding some records
triggers an internal error (negative return value).

With this change the caller can continue with PKIX if desired when
none of the TLSA records are usable, or take some appropriate action
if DANE is required.

Also fixed the internal ssl_dane_dup() function to properly initialize
the TLSA RR stack in the target SSL handle.  Errors in ssl_dane_dup()
are no longer ignored.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-04-22 10:41:57 -04:00
Kazuki Yamaguchi
9d5ac9532c Add SSL_CTX_get_ciphers()
Add an accessor for SSL_CTX.

Since libssl was made opaque, there is no way for users to access the
cipher_list, while users can set the cipher_list by
SSL_CTX_set_cipher_list().

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-04-11 09:59:04 -04:00
Rich Salz
b9aec69ace Add SSL_DANE typedef for consistency.
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
2016-04-08 09:30:23 -04:00
Andy Polyakov
463a7b8cb0 Clean-up *_DEBUG options.
Since NDEBUG is defined unconditionally on command line for release
builds, we can omit *_DEBUG options in favour of effective "all-on"
in debug builds exercised though CI.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
2016-04-07 21:18:00 +02:00
Viktor Dukhovni
43341433a8 Suppress CT callback as appropriate
Suppress CT callbacks with aNULL or PSK ciphersuites that involve
no certificates.  Ditto when the certificate chain is validated via
DANE-TA(2) or DANE-EE(3) TLSA records.  Also skip SCT processing
when the chain is fails verification.

Move and consolidate CT callbacks from libcrypto to libssl.  We
also simplify the interface to SSL_{,CTX_}_enable_ct() which can
specify either a permissive mode that just collects information or
a strict mode that requires at least one valid SCT or else asks to
abort the connection.

Simplified SCT processing and options in s_client(1) which now has
just a simple pair of "-noct" vs. "-ct" options, the latter enables
the permissive callback so that we can complete the handshake and
report all relevant information.  When printing SCTs, print the
validation status if set and not valid.

Signed-off-by: Rob Percival <robpercival@google.com>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
2016-04-07 14:41:34 -04:00
Matt Caswell
3e41ac3528 Fix no-ocsp
Misc fixes for no-ocsp

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-04-06 14:57:45 +01:00
Rich Salz
e771eea6d8 Revert "various spelling fixes"
This reverts commit 620d540bd4.
It wasn't reviewed.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-04-04 16:11:43 -04:00
FdaSilvaYY
620d540bd4 various spelling fixes
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-04-04 15:06:32 -04:00
Matt Caswell
a146ae55ba Make BIO opaque
Move the the BIO_METHOD and BIO structures into internal header files,
provide appropriate accessor methods and update all internal code to use
the new accessors where appropriate.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-03-29 17:40:54 +01:00
Rich Salz
3c27208fab Remove #error from include files.
Don't have #error statements in header files, but instead wrap
the contents of that file in #ifndef OPENSSL_NO_xxx
This means it is now always safe to include the header file.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-03-20 19:48:36 -04:00
Viktor Dukhovni
ee3a6c646f Report TLS 1.0 as backwards-compatible TLSv1
The TLSv1.0 form is retained for reporting the first protocol version
that supports a given cupher.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-03-17 15:38:48 -04:00
Rob Percival
8359b57f27 check reviewer --reviewer=emilia
Remove 'log' field from SCT and related accessors

In order to still have access to an SCT's CTLOG when calling SCT_print,
SSL_CTX_get0_ctlog_store has been added.

Improved documentation for some CT functions in openssl/ssl.h.

Reviewed-by: Emilia Käsper <emilia@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-03-10 14:53:04 -05:00
Kurt Roeckx
2b8fa1d56c Deprecate the use of version-specific methods
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>

MR: #1824
2016-03-09 19:45:05 +01:00
Kurt Roeckx
3eb2aff401 Add support for minimum and maximum protocol version supported by a cipher
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>

MR: #1595
2016-03-09 19:10:28 +01:00
Kurt Roeckx
7d65007238 Make function to convert version to string
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>

MR: #1595
2016-03-09 19:10:28 +01:00
Kurt Roeckx
e4646a8963 Constify security callbacks
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>

MR: #1595
2016-03-09 19:10:28 +01:00
Rob Percival
328f36c5c5 Do not display a CT log error message if CT validation is disabled
Reviewed-by: Emilia Käsper <emilia@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-03-09 13:07:09 -05:00
Richard Levitte
6b99e875d8 Counter mixed signedness with a cast
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
2016-03-09 08:58:43 +01:00
Alessandro Ghedini
16203f7b71 Convert CRYPTO_LOCK_SSL_* to new multi-threading API
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-03-08 18:48:38 -05:00
Todd Short
817cd0d52f GH787: Fix ALPN
* Perform ALPN after the SNI callback; the SSL_CTX may change due to
  that processing
* Add flags to indicate that we actually sent ALPN, to properly error
  out if unexpectedly received.
* clean up ssl3_free() no need to explicitly clear when doing memset
* document ALPN functions

Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
2016-03-08 09:03:05 -05:00
Matt Caswell
0707741532 Fix erroneous fall thgrough in switch statement
Fix an erroenous fall through when setting the max_pipelines value.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2016-03-07 21:39:28 +00:00
Matt Caswell
49580f25b3 Add an SSL_has_pending() function
This is similar to SSL_pending() but just returns a 1 if there is data
pending in the internal OpenSSL buffers or 0 otherwise (as opposed to
SSL_pending() which returns the number of bytes available). Unlike
SSL_pending() this will work even if "read_ahead" is set (which is the
case if you are using read pipelining, or if you are doing DTLS). A 1
return value means that we have unprocessed data. It does *not* necessarily
indicate that there will be application data returned from a call to
SSL_read(). The unprocessed data may not be application data or there
could be errors when we attempt to parse the records.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2016-03-07 21:39:27 +00:00
Matt Caswell
dad78fb13d Add an ability to set the SSL read buffer size
This capability is required for read pipelining. We will only read in as
many records as will fit in the read buffer (and the network can provide
in one go). The bigger the buffer the more records we can process in
parallel.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2016-03-07 21:39:27 +00:00
Matt Caswell
94777c9c86 Implement read pipeline support in libssl
Read pipelining is controlled in a slightly different way than with write
pipelining. While reading we are constrained by the number of records that
the peer (and the network) can provide to us in one go. The more records
we can get in one go the more opportunity we have to parallelise the
processing.

There are two parameters that affect this:
* The number of pipelines that we are willing to process in one go. This is
controlled by max_pipelines (as for write pipelining)
* The size of our read buffer. A subsequent commit will provide an API for
adjusting the size of the buffer.

Another requirement for this to work is that "read_ahead" must be set. The
read_ahead parameter will attempt to read as much data into our read buffer
as the network can provide. Without this set, data is read into the read
buffer on demand. Setting the max_pipelines parameter to a value greater
than 1 will automatically also turn read_ahead on.

Finally, the read pipelining as currently implemented will only parallelise
the processing of application data records. This would only make a
difference for renegotiation so is unlikely to have a significant impact.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2016-03-07 21:39:27 +00:00
Matt Caswell
d102d9df86 Implement write pipeline support in libssl
Use the new pipeline cipher capability to encrypt multiple records being
written out all in one go. Two new SSL/SSL_CTX parameters can be used to
control how this works: max_pipelines and split_send_fragment.

max_pipelines defines the maximum number of pipelines that can ever be used
in one go for a single connection. It must always be less than or equal to
SSL_MAX_PIPELINES (currently defined to be 32). By default only one
pipeline will be used (i.e. normal non-parallel operation).

split_send_fragment defines how data is split up into pipelines. The number
of pipelines used will be determined by the amount of data provided to the
SSL_write call divided by split_send_fragment. For example if
split_send_fragment is set to 2000 and max_pipelines is 4 then:
SSL_write called with 0-2000 bytes == 1 pipeline used
SSL_write called with 2001-4000 bytes == 2 pipelines used
SSL_write called with 4001-6000 bytes == 3 pipelines used
SSL_write_called with 6001+ bytes == 4 pipelines used

split_send_fragment must always be less than or equal to max_send_fragment.
By default it is set to be equal to max_send_fragment. This will mean that
the same number of records will always be created as would have been
created in the non-parallel case, although the data will be apportioned
differently. In the parallel case data will be spread equally between the
pipelines.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2016-03-07 21:39:27 +00:00
Rob Percival
3f3c7d26d5 Use s->session->peer instead of calling SSL_get_peer_certificate(s)
Avoids modifying certificate reference count, and thereby avoids locking.

Reviewed-by: Emilia Käsper <emilia@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-03-07 14:44:04 -05:00
Rob Percival
4d482ee24f Lowercase name of SSL_validate_ct as it is an internal function
Reviewed-by: Emilia Käsper <emilia@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-03-07 14:44:04 -05:00
Rob Percival
1cb437bedb CT code now calls X509_free() after calling SSL_get_peer_certificate()
Without this, the peer certificate would never be deleted, resulting in
a memory leak.

Reviewed-by: Emilia Käsper <emilia@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-03-07 14:44:04 -05:00
Rob Percival
ed29e82ade Adds CT validation to SSL connections
Disabled by default, but can be enabled by setting the
ct_validation_callback on a SSL or SSL_CTX.

Reviewed-by: Ben Laurie <ben@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-03-04 10:50:10 -05:00
Christian Heimes
0c452abc16 Provide getters for default_passwd_cb and userdata
This patch provides getters for default_passwd_cb and userdata for SSL
and SSL_CTX. The getter functions are required to port Python's ssl module
to OpenSSL 1.1.0.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
2016-03-02 17:15:46 +00:00
Matt Caswell
ff75a25749 Refactor the async wait fd logic
Implementation experience has shown that the original plan for async wait
fds was too simplistic. Originally the async logic created a pipe internally
and user/engine code could then get access to it via API calls. It is more
flexible if the engine is able to create its own fd and provide it to the
async code.

Another issue is that there can be a lot of churn in the fd value within
the context of (say) a single SSL connection leading to continually adding
and removing fds from (say) epoll. It is better if we can provide some
stability of the fd value across a whole SSL connection. This is
problematic because an engine has no concept of an SSL connection.

This commit refactors things to introduce an ASYNC_WAIT_CTX which acts as a
proxy for an SSL connection down at the engine layer.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-29 12:58:44 +00:00
Rich Salz
7c96dbcdab GH715: ENGINE_finish can take NULL
Simplifies calling code.  Also fixed up any !ptr tests that were
nearby, turning them into NULL tests.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-25 15:19:42 -05:00
Rich Salz
72e9be3d08 GH235: Set error status on malloc failure
Reviewed-by: Emilia Käsper <emilia@openssl.org>
2016-02-25 08:37:36 -05:00
Dr. Stephen Henson
2cf28d6127 Remove unused parameter in ssl_set_masks().
The ssl_set_masks() function no longer depends on the cipher. This
also means there is no need to set the masks for each cipher in
ssl3_choose_cipher.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-02-24 02:41:54 +00:00
Rich Salz
d63a5e5e7d Remove outdated DEBUG flags.
Add -DBIO_DEBUG to --strict-warnings.
Remove comments about outdated debugging ifdef guards.
Remove md_rand ifdef guarding an assert; it doesn't seem used.
Remove the conf guards in conf_api since we use OPENSSL_assert, not assert.
For pkcs12 stuff put OPENSSL_ in front of the macro name.
Merge TLS_DEBUG into SSL_DEBUG.
Various things just turned on/off asserts, mainly for checking non-NULL
arguments, which is now removed: camellia, bn_ctx, crypto/modes.
Remove some old debug code, that basically just printed things to stderr:
  DEBUG_PRINT_UNKNOWN_CIPHERSUITES, DEBUG_ZLIB, OPENSSL_RI_DEBUG,
  RL_DEBUG, RSA_DEBUG, SCRYPT_DEBUG.
Remove OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-18 17:14:50 -05:00
Zhao Junwang
c4c32155f5 GH706: Use NULL for pointer compare.
As handshake_func is a function pointer, it should compare to NULL

Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
2016-02-18 09:56:02 -05:00
Dr. Stephen Henson
c7c4625693 remove redundant code
Reviewed-by: Matt Caswell <matt@openssl.org>
2016-02-17 16:16:13 +00:00
Dr. Stephen Henson
ce0c1f2bb2 Remove static ECDH support.
Remove support for static ECDH ciphersuites. They require ECDH keys
in certificates and don't support forward secrecy.

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
2016-02-11 20:54:01 +00:00
Rich Salz
f3f1cf8444 Move to REF_DEBUG, for consistency.
Add utility macros REF_ASSERT_NOT and REF_PRINT_COUNT
This is also RT 4181

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-11 12:40:32 -05:00
Matt Caswell
0fc32b0718 The new init functions can now fail so shouldn't be void
The new init functions can fail if the library has already been stopped. We
should be able to indicate failure with a 0 return value.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-02-10 17:40:59 +00:00
Rich Salz
f672aee494 Rename INIT funtions, deprecate old ones.
Man, there were a lot of renamings :)

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-10 09:37:03 -05:00
Matt Caswell
7fa792d14d Auto init/de-init libssl
Building on the pervious commit to auto initialise and de-initialise libssl

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 15:11:38 +00:00
Viktor Dukhovni
c0a445a9f2 Suppress DANE TLSA reflection when verification fails
As documented both SSL_get0_dane_authority() and SSL_get0_dane_tlsa()
are expected to return a negative match depth and nothing else when
verification fails.  However, this only happened when verification
failed during chain construction.  Errors in verification of the
constructed chain did not have the intended effect on these functions.

This commit updates the functions to check for verify_result ==
X509_V_OK, and no longer erases any accumulated match information
when chain construction fails.  Sophisticated developers can, with
care, use SSL_set_verify_result(ssl, X509_V_OK) to "peek" at TLSA
info even when verification fail.  They must of course first check
and save the real error, and restore the original error as quickly
as possible.  Hiding by default seems to be the safer interface.

Introduced X509_V_ERR_DANE_NO_MATCH code to signal failure to find
matching TLSA records.  Previously reported via X509_V_ERR_CERT_UNTRUSTED.

This also changes the "-brief" output from s_client to include
verification results and TLSA match information.

Mentioned session resumption in code example in SSL_CTX_dane_enable(3).
Also mentioned that depths returned are relative to the verified chain
which is now available via SSL_get0_verified_chain(3).

Added a few more test-cases to danetest, that exercise the new
code.

Resolved thread safety issue in use of static buffer in
X509_verify_cert_error_string().

Fixed long-stating issue in apps/s_cb.c which always sets verify_error
to either X509_V_OK or "chain to long", code elsewhere (e.g.
s_time.c), seems to expect the actual error.  [ The new chain
construction code is expected to correctly generate "chain
too long" errors, so at some point we need to drop the
work-arounds, once SSL_set_verify_depth() is also fixed to
propagate the depth to X509_STORE_CTX reliably. ]

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-02-08 14:46:09 -05:00
Dr. Stephen Henson
b577fd0b81 Deprecate undocumented SSL_cache_hit().
Deprecate undocumented SSL_cache_hit(). Make SSL_session_reused() into a
real function.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-08 16:57:07 +00:00
Matt Caswell
64f9f40696 Handle SSL_shutdown while in init more appropriately #2
Previous commit 7bb196a71 attempted to "fix" a problem with the way
SSL_shutdown() behaved whilst in mid-handshake. The original behaviour had
SSL_shutdown() return immediately having taken no action if called mid-
handshake with a return value of 1 (meaning everything was shutdown
successfully). In fact the shutdown has not been successful.

Commit 7bb196a71 changed that to send a close_notify anyway and then
return. This seems to be causing some problems for some applications so
perhaps a better (much simpler) approach is revert to the previous
behaviour (no attempt at a shutdown), but return -1 (meaning the shutdown
was not successful).

This also fixes a bug where SSL_shutdown always returns 0 when shutdown
*very* early in the handshake (i.e. we are still using SSLv23_method).

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
2016-02-08 09:29:29 +00:00
Dr. Stephen Henson
696178edff Add SSL_get0_verified_chain() to return verified chain of peer
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
2016-02-06 18:18:28 +00:00
Dmitry-Me
a89c9a0d85 GH614: Use memcpy()/strdup() when possible
Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2016-02-03 15:45:56 -05:00
Emilia Kasper
dc5744cb78 RT3234: disable compression
CRIME protection: disable compression by default, even if OpenSSL is
compiled with zlib enabled. Applications can still enable compression by
calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by using
the SSL_CONF library to configure compression. SSL_CONF continues to
work as before:

SSL_CONF_cmd(ctx, "Options", "Compression") enables compression.

SSL_CONF_cmd(ctx, "Options", "-Compression") disables compression (now
no-op by default).

The command-line switch has changed from -no_comp to -comp.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-02-03 18:08:16 +01:00
Matt Caswell
ec4479249d Implement Async SSL_shutdown
This extends the existing async functionality to SSL_shutdown(), i.e.
SSL_shutdown() can now casuse an SSL_ERROR_WANT_ASYNC error to be returned
from SSL_get_error() if async mode has been enabled.

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
2016-01-29 11:36:44 +00:00
Matt Caswell
a18a31e49d Add SSL_up_ref() and SSL_CTX_up_ref()
The SSL and SSL_CTX structures are reference counted. However since libssl
was made opaque there is no way for users of the library to manipulate the
reference counts. This adds functions to enable that.

Reviewed-by: Stephen Henson <steve@openssl.org>
2016-01-26 13:19:10 +00:00
Alessandro Ghedini
b7557ccf36 Fix build failure with CIPHER_DEBUG
Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2016-01-22 12:00:46 -05:00
Matt Caswell
7bb196a71a Handle SSL_shutdown while in init more appropriately
Calling SSL_shutdown while in init previously gave a "1" response, meaning
everything was successfully closed down (even though it wasn't). Better is
to send our close_notify, but fail when trying to receive one.

The problem with doing a shutdown while in the middle of a handshake is
that once our close_notify is sent we shouldn't really do anything else
(including process handshake/CCS messages) until we've received a
close_notify back from the peer. However the peer might send a CCS before
acting on our close_notify - so we won't be able to read it because we're
not acting on CCS messages!

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
2016-01-20 13:58:12 +00:00
Viktor Dukhovni
8d887efa2e Better invalid SNI name error handling
Also report an SSL_dane_enable error when the basedomain is an
invalid SNI name.  Avoid side-effects when such a name is valid
with X509_VERIFY_PARAM_set1_host(), as e.g. with an empty name, by
setting the SNI name first.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-01-16 17:15:42 -05:00
Rich Salz
47153c7253 Make SSL_set_debug deprecated in 1.1
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
2016-01-14 12:30:32 -05:00
Rich Salz
3a4e9367d8 RT4232: Extra space in help message.
It turns out that -pause calls the undocumented function SSL_set_debug.
That just sets flag inside the SSL structure.  That flag, despite
the command is never used.  So remove the flag, the field, and the
function.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-01-14 11:32:18 -05:00
Richard Levitte
846ec07d90 Adapt all EVP_CIPHER_CTX users for it becoming opaque
Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-01-12 13:52:22 +01:00
Dr. Stephen Henson
62d0577e0d Add lh_new() inlining
Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-01-11 17:50:27 +00:00
Viktor Dukhovni
8106cb8b6d Make SSL{_CTX,}_{get,set,clear}_options functions
These now take and return unsigned long, and get is constified.
Updated related documentation and util/ssleay.num

Reviewed-by: Matt Caswell <matt@openssl.org>
2016-01-11 10:51:02 -05:00
Dr. Stephen Henson
4a640fb6c3 Fix declarations and constification for inline stack.
Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-01-07 18:00:51 +00:00
Viktor Dukhovni
919ba00942 DANE support structures, constructructors and accessors
Also tweak some of the code in demos/bio, to enable interactive
testing of BIO_s_accept's use of SSL_dup.  Changed the sconnect
client to authenticate the server, which now exercises the new
SSL_set1_host() function.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-01-05 19:31:49 -05:00
Viktor Dukhovni
4fa52141b0 Protocol version selection and negotiation rewrite
The protocol selection code is now consolidated in a few consecutive
short functions in a single file and is table driven.  Protocol-specific
constraints that influence negotiation are moved into the flags
field of the method structure.  The same protocol version constraints
are now applied in all code paths.  It is now much easier to add
new protocol versions without reworking the protocol selection
logic.

In the presence of "holes" in the list of enabled client protocols
we no longer select client protocols below the hole based on a
subset of the constraints and then fail shortly after when it is
found that these don't meet the remaining constraints (suiteb, FIPS,
security level, ...).  Ideally, with the new min/max controls users
will be less likely to create "holes" in the first place.

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2016-01-02 10:49:06 -05:00
Kurt Roeckx
7946ab33ce Add support for minimum and maximum protocol version
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
2016-01-02 10:47:52 -05:00
Dr. Stephen Henson
bc71f91064 Remove fixed DH ciphersuites.
Remove all fixed DH ciphersuites and associated logic.

Reviewed-by: Matt Caswell <matt@openssl.org>
2015-12-19 16:14:51 +00:00
Rich Salz
7644a9aef8 Rename some BUF_xxx to OPENSSL_xxx
Rename BUF_{strdup,strlcat,strlcpy,memdup,strndup,strnlen}
to OPENSSL_{strdup,strlcat,strlcpy,memdup,strndup,strnlen}
Add #define's for the old names.
Add CRYPTO_{memdup,strndup}, called by OPENSSL_{memdup,strndup} macros.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-12-16 16:14:49 -05:00
Richard Levitte
60f43e9e4d Fix warnings about unused variables when EC is disabled.
Reviewed-by: Stephen Henson <steve@openssl.org>
2015-12-09 23:59:04 +01:00
Richard Levitte
bfb0641f93 Cleanup: fix all sources that used EVP_MD_CTX_(create|init|destroy)
Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-12-07 17:40:20 +01:00
Richard Levitte
6e59a892db Adjust all accesses to EVP_MD_CTX to use accessor functions.
Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-12-07 17:39:23 +01:00
Kurt Roeckx
361a119127 Remove support for all 40 and 56 bit ciphers.
Reviewed-by: Rich Salz <rsalz@openssl.org>

MR: #364
2015-12-05 17:45:59 +01:00
Kurt Roeckx
fe6ef2472d Remove SSL_{CTX_}set_ecdh_auto() and always enable ECDH
Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
2015-12-04 22:30:36 +01:00
Kurt Roeckx
6977e8ee4a Make SSL_{CTX}_set_tmp_ecdh() call SSL_{CTX_}set1_curves()
SSL_{CTX}_set_tmp_ecdh() allows to set 1 EC curve and then tries to use it.  On
the other hand SSL_{CTX_}set1_curves() allows you to set a list of curves, but
only when SSL_{CTX_}set_ecdh_auto() was called to turn it on.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
2015-12-04 22:25:11 +01:00
Kurt Roeckx
6f78b9e824 Remove support for SSL_{CTX_}set_tmp_ecdh_callback().
This only gets used to set a specific curve without actually checking that the
peer supports it or not and can therefor result in handshake failures that can
be avoided by selecting a different cipher.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
2015-12-04 22:22:31 +01:00
Rich Salz
e6390acac9 ex_data part 2: doc fixes and CRYPTO_free_ex_index.
Add CRYPTO_free_ex_index (for shared libraries)
Unify and complete the documentation for all "ex_data" API's and objects.
Replace xxx_get_ex_new_index functions with a macro.
Added an exdata test.
Renamed the ex_data internal datatypes.

Reviewed-by: Matt Caswell <matt@openssl.org>
2015-12-01 11:48:37 -05:00
Dr. Stephen Henson
28ba2541f9 PRF and handshake hash revision.
Change handshake hash array into a single digest context simplifying the
handhake hash code. Use EVP_md5_sha1() if needed for handshake hashes in
TLS 1.1 and earlier.

Simplify PRF code to also use a single digest and treat EVP_md5_sha1()
as a special case.

Modify algorithm2 field of ciphers to use a single index value for handshake
hash and PRF instead of a bitmap.

Reviewed-by: Matt Caswell <matt@openssl.org>
2015-11-27 19:04:14 +00:00
Matt Caswell
2a9b96548a Updates to GOST2012
Various updates following feedback from the recent commit of the new
GOST2012 code.

Reviewed-by: Andy Polyakov <appro@openssl.org>
2015-11-27 17:23:14 +00:00
Dr. Stephen Henson
6938c954b0 Remove unused cert_verify_mac code
Reviewed-by: Andy Polyakov <appro@openssl.org>
2015-11-25 18:22:12 +00:00
Dmitry Belyavsky
e44380a990 Patch containing TLS implementation for GOST 2012
This patch contains the necessary changes to provide GOST 2012
ciphersuites in TLS. It requires the use of an external GOST 2012 engine.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-11-23 16:09:42 +00:00
Matt Caswell
7fecbf6f21 Rename start_async_job to ssl_start_async_job
Make it clear that this function is ssl specific.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-11-20 23:35:19 +00:00
Matt Caswell
add2f5ca6d Clean up libssl async calls
Tidy up the libssl async calls and make sure all IO functions are covered.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-11-20 23:35:19 +00:00
Matt Caswell
9920a58eb2 Fix the error code for SSL_get_async_wait_fd()
0 is a valid file descriptor so SSL_get_async_wait_fd should instead return
-1 on error.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-11-20 23:34:35 +00:00
Matt Caswell
44a27ac282 Remove ASYNC_in_job()
The ASYNC_in_job() function is redundant. The same effect can be achieved by
using ASYNC_get_current_job().

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-11-20 23:34:34 +00:00
Matt Caswell
f4da39d200 Initial Async notify code changes
Initial API implemented for notifying applications that an ASYNC_JOB
has completed. Currently only s_server is using this. The Dummy Async
engine "cheats" in that it notifies that it has completed *before* it
pauses the job. A normal async engine would not do that.

Only the posix version of this has been implemented so far, so it will
probably fail to compile on Windows at the moment.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-11-20 23:33:46 +00:00
Matt Caswell
826760945d Async clean ups
Removed the function ASYNC_job_is_waiting() as it was redundant. The only
time user code has a handle on a job is when one is waiting, so all they
need to do is check whether the job is NULL. Also did some cleanups to
make sure the job really is NULL after it has been freed!

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-11-20 23:32:18 +00:00
Matt Caswell
07bbc92ccb Make libssl async aware
The following entry points have been made async aware:
SSL_accept
SSL_read
SSL_write

Also added is a new mode - SSL_MODE_ASYNC. Calling the above functions with
the async mode enabled will initiate a new async job. If an async pause is
encountered whilst executing the job (such as for example if using SHA1/RSA
with the Dummy Async engine), then the above functions return with
SSL_WANT_ASYNC. Calling the functions again (with exactly the same args
as per non-blocking IO), will resume the job where it left off.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-11-20 23:31:42 +00:00
Matt Caswell
5f3d93e4a3 Ensure all EVP calls have their returns checked where appropriate
There are lots of calls to EVP functions from within libssl There were
various places where we should probably check the return value but don't.
This adds these checks.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-11-20 15:47:02 +00:00
Matt Caswell
a974e64aaa Fix SSL_use_certificate_chain_file
The new function SSL_use_certificate_chain_file was always crashing in
the internal function use_certificate_chain_file because it would pass a
NULL value for SSL_CTX *, but use_certificate_chain_file would
unconditionally try to dereference it.

Reviewed-by: Stephen Henson <steve@openssl.org>
2015-11-10 23:02:44 +00:00
Matt Caswell
a71edf3ba2 Standardise our style for checking malloc failures
if we have a malloc |x = OPENSSL_malloc(...)| sometimes we check |x|
for NULL and sometimes we treat it as a boolean |if(!x) ...|. Standardise
the approach in libssl.

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2015-11-09 22:48:41 +00:00
Matt Caswell
3457e7a087 Remove redundant check from SSL_shutdown
The SSL object was being deref'd and then there was a later redundant check
to see if it is NULL. We assume all SSL_foo functions pass a non NULL SSL
object and do not check it.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-11-09 15:36:19 +00:00
Dr. Stephen Henson
90d9e49a4b Use uint32_t and int32_t for SSL_CIPHER structure.
Reviewed-by: Andy Polyakov <appro@openssl.org>
2015-11-08 14:03:50 +00:00
Matt Caswell
87d9cafa33 Remove some SSLv2 references
There were a few remaining references to SSLv2 support which are no longer
relevant now that it has been removed.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-10-30 09:17:22 +00:00
Matt Caswell
024f543c15 Move in_handshake into STATEM
The SSL variable |in_handshake| seems misplaced. It would be better to have
it in the STATEM structure.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-10-30 08:39:47 +00:00
Matt Caswell
a71a4966a3 Move |no_cert_verify| into state machine
The |no_cert_verify| should be in the state machine structure not in SSL

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-10-30 08:39:46 +00:00
Matt Caswell
fe3a329117 Change statem prefix to ossl_statem
Change various state machine functions to use the prefix ossl_statem
instead.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-10-30 08:39:46 +00:00
Matt Caswell
23a635c0ec Remove the type variable
The SSL structure contained a "type" variable that was set to either
SSL_ST_ACCEPT or SSL_ST_CONNECT depending on whether we are the server or
the client. This duplicates the capability of the "server" variable and was
actually rarely used.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-10-30 08:38:18 +00:00
Matt Caswell
49ae742398 Remove redundant code
Clean up and remove lots of code that is now no longer needed due to the
move to the new state machine.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-10-30 08:38:18 +00:00
Matt Caswell
e27f234a41 Split TLS server functions
Split the TLS server ssl3_get_* and ssl3_send_* functions into two ready
for the migration to the new state machine code.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-10-30 08:38:18 +00:00
Matt Caswell
f8e0a55738 Add initial state machine rewrite code
This is the first drop of the new state machine code.

The rewrite has the following objectives:
- Remove duplication of state code between client and server
- Remove duplication of state code between TLS and DTLS
- Simplify transitions and bring the logic together in a single location
  so that it is easier to validate
- Remove duplication of code between each of the message handling functions
- Receive a message first and then work out whether that is a valid
  transition - not the other way around (the other way causes lots of issues
  where we are expecting one type of message next but actually get something
  else)
- Separate message flow state from handshake state (in order to better
  understand each)
  - message flow state = when to flush buffers; handling restarts in the
    event of NBIO events; handling the common flow of steps for reading a
    message and the common flow of steps for writing a message etc
  - handshake state = what handshake message are we working on now
- Control complexity: only the state machine can change state: keep all
  the state changes local to a file

This builds on previous state machine related work:
- Surface CCS processing in the state machine
- Version negotiation rewrite

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-10-30 08:27:59 +00:00
David Woodhouse
984d6c6052 Fix no-stdio build
Much related/similar work also done by
Ivan Nestlerode <ivan.nestlerode@sonos.com>

   +Replace FILE BIO's with dummy ops that fail.
   +Include <stdio.h> for sscanf() even with no-stdio (since the declaration
    is there). We rely on sscanf() to parse the OPENSSL_ia32cap environment
    variable, since it can be larger than a 'long'. And we don't rely on the
    availability of strtoull().
   +Remove OPENSSL_stderr(); not used.
   +Make OPENSSL_showfatal() do nothing (currently without stdio there's
    nothing we can do).
   +Remove file-based functionality from ssl/. The function
    prototypes were already gone, but not the functions themselves.
   +Remove unviable conf functionality via SYS_UEFI
   +Add fallback definition of BUFSIZ.
   +Remove functions taking FILE * from header files.
   +Add missing DECLARE_PEM_write_fp_const
   +Disable X509_LOOKUP_hash_dir(). X509_LOOKUP_file() was already compiled out,
    so remove its prototype.
   +Use OPENSSL_showfatal() in CRYPTO_destroy_dynlockid().
   +Eliminate SRP_VBASE_init() and supporting functions. Users will need to
    build the verifier manually instead.
   +Eliminate compiler warning for unused do_pk8pkey_fp().
   +Disable TEST_ENG_OPENSSL_PKEY.
   +Disable GOST engine as is uses [f]printf all over the place.
   +Eliminate compiler warning for unused send_fp_chars().

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-09-29 21:59:19 -04:00
Matt Caswell
d84a7b20e3 Add ability to set default CA path and file locations individually
Previously you could only set both the default path and file locations
together. This adds the ability to set one without the other.

Reviewed-by: Andy Polyakov <appro@openssl.org>
2015-09-25 14:49:59 +01:00
Emilia Kasper
e9fa092efc Remove ssl_put_cipher_by_char
Since SSLv3, a CipherSuite is always 2 bytes. The only place where we
need 3-byte ciphers is SSLv2-compatible ClientHello processing.

So, remove the ssl_put_cipher_by_char indirection.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-09-22 20:34:25 +02:00
Filipe DA SILVA
0e04674e96 RT4047: Set reference count earlier
Make sure it's valid very early.

Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-09-17 11:58:24 -04:00
Dr. Stephen Henson
df6da24bda Fix PSK identity hint handling.
For server use a PSK identity hint value in the CERT structure which
is inherited when SSL_new is called and which allows applications to
set hints on a per-SSL basis. The previous version of
SSL_use_psk_identity_hint tried (wrongly) to use the SSL_SESSION structure.

PR#4039

Reviewed-by: Matt Caswell <matt@openssl.org>
2015-09-14 19:52:27 +01:00
Ben Laurie
df2ee0e27d Enable -Wmissing-variable-declarations and
-Wincompatible-pointer-types-discards-qualifiers (the latter did not require
any code changes).

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-09-11 04:51:55 +01:00
Dr. Stephen Henson
a8d8e06b0a Avoid direct X509 structure access
Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-09-06 00:17:37 +01:00
Rich Salz
64b25758ed remove 0 assignments.
After openssl_zalloc, cleanup more "set to 0/NULL" assignments.
Many are from github feedback.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-09-03 16:26:34 -04:00
Rich Salz
b51bce9420 Add and use OPENSSL_zalloc
There are many places (nearly 50) where we malloc and then memset.
Add an OPENSSL_zalloc routine to encapsulate that.
(Missed one conversion; thanks Richard)
Also fixes GH328

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-09-02 22:05:37 -04:00
Dr. Stephen Henson
05f0fb9f6a Add X509_up_ref function.
Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-08-31 23:18:55 +01:00
Rich Salz
ade44dcb16 Remove Gost94 signature algorithm.
This was obsolete in 2001.  This is not the same as Gost94 digest.
Thanks to Dmitry Belyavsky <beldmit@gmail.com> for review and advice.

Reviewed-by: Matt Caswell <matt@openssl.org>
2015-08-11 18:23:29 -04:00
Dr. Stephen Henson
526f94ad68 Enable PSK if corresponding mask set.
Reviewed-by: Matt Caswell <matt@openssl.org>
2015-07-30 14:43:35 +01:00
Dr. Stephen Henson
f7d5348710 Use uint32_t consistently for flags.
Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-07-18 13:57:05 +01:00
Dr. Stephen Henson
c34b0f9930 Move peer chain to SSL_SESSION structure.
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-06-22 13:52:24 +01:00
Rich Salz
d31fb0b5b3 Refactor into clear_ciphers; RT3588
While closing RT3588 (Remove obsolete comment) Kurt and I saw that a
few lines to completely clear the SSL cipher state could be moved into
a common function.

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2015-06-15 10:08:19 -04:00
Matt Caswell
d9f1c639d5 Change return type of the new accessors
The new accessors SSL_get_client_random, SSL_get_server_random and
SSL_SESSION_get_master_key should return a size_t to match the type of the
|outlen| parameter.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-05-28 16:55:15 +01:00
Matt Caswell
6b8f5d0d43 Change the new functions to use size_t
Change the new SSL_get_client_random(), SSL_get_server_random() and
SSL_SESSION_get_master_key() functions to use size_t for |outlen| instead of
int.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-05-28 16:05:56 +01:00
Nick Mathewson
858618e7e0 Add new functions to extract {client,server}_random, master_key
Tor uses these values to implement a low-rent clone of RFC 5705 (which,
in our defense, we came up with before RFC 5705 existed).  But now that
ssl_st is opaque, we need another way to get at them.

Includes documentation, with suitable warnings about not actually
using these functions.

Signed-off-by: Nick Mathewson <nickm@torproject.org>
Signed-off-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-05-28 16:05:01 +01:00
Nick Mathewson
831eef2cf5 Add SSL_get_client_ciphers() to return ciphers from ClientHello
On the server side, if you want to know which ciphers the client
offered, you had to use session->ciphers.  But that field is no
longer visible, so we need a method to get at it.

Signed-off-by: Nick Mathewson <nickm@torproject.org>
Signed-off-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-05-28 16:00:23 +01:00
Matt Caswell
fdfe8b06ae Fix typo setting up certificate masks
The certificate masks are used to select which ciphersuite we are going to
use. The variables |emask_k| and |emask_a| relate to export grade key
exchange and authentication respecitively. The variables |mask_k| and
|mask_a| are the equivalent versions for non-export grade. This fixes an
instance where the two usages of export/non-export were mixed up. In
practice it makes little difference since it still works!

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-05-22 23:59:33 +01:00
Matt Caswell
e481f9b90b Remove support for OPENSSL_NO_TLSEXT
Given the pervasive nature of TLS extensions it is inadvisable to run
OpenSSL without support for them. It also means that maintaining
the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
not well tested). Therefore it is being removed.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-05-22 23:10:51 +01:00
Dr. Stephen Henson
4d69f9e69d move masks out of CERT structure
Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-05-19 14:05:29 +01:00
Dr. Stephen Henson
6383d31645 Move certificate validity flags out of CERT.
Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-05-18 18:49:13 +01:00
Dr. Stephen Henson
d376e57d68 Move signing digest out of CERT.
Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-05-18 18:49:13 +01:00
Dr. Stephen Henson
76106e60a8 CERT tidy
Move per-connection state out of the CERT structure: which should just be
for shared configuration data (e.g. certificates to use).

In particular move temporary premaster secret, raw ciphers, peer signature
algorithms and shared signature algorithms.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-05-18 18:49:13 +01:00
Matt Caswell
d45ba43dab Updates following review comments
Miscellaneous updates following review comments on the version negotiation
rewrite patches.

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2015-05-16 09:20:52 +01:00
Matt Caswell
32ec41539b Server side version negotiation rewrite
This commit changes the way that we do server side protocol version
negotiation. Previously we had a whole set of code that had an "up front"
state machine dedicated to the negotiating the protocol version. This adds
significant complexity to the state machine. Historically the justification
for doing this was the support of SSLv2 which works quite differently to
SSLv3+. However, we have now removed support for SSLv2 so there is little
reason to maintain this complexity.

The one slight difficulty is that, although we no longer support SSLv2, we
do still support an SSLv3+ ClientHello in an SSLv2 backward compatible
ClientHello format. This is generally only used by legacy clients. This
commit adds support within the SSLv3 code for these legacy format
ClientHellos.

Server side version negotiation now works in much the same was as DTLS,
i.e. we introduce the concept of TLS_ANY_VERSION. If s->version is set to
that then when a ClientHello is received it will work out the most
appropriate version to respond with. Also, SSLv23_method and
SSLv23_server_method have been replaced with TLS_method and
TLS_server_method respectively. The old SSLv23* names still exist as
macros pointing at the new name, although they are deprecated.

Subsequent commits will look at client side version negotiation, as well of
removal of the old s23* code.

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2015-05-16 09:19:56 +01:00
Matt Caswell
55a9a16f1c Remove Kerberos support from libssl
Remove RFC2712 Kerberos support from libssl. This code and the associated
standard is no longer considered fit-for-purpose.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-05-13 15:07:57 +01:00
Rich Salz
9a555706a3 Make COMP_CTX and COMP_METHOD opaque
Since COMP_METHOD is now defined in comp_lcl.h, it is no
longer possible to create new TLS compression methods without
using the OpenSSL source.  Only ZLIB is supported by default.
Also, since the types are opaque, #ifdef guards to use "char *"
instead of the real type aren't necessary.

The changes are actually minor.  Adding missing copyright to some
files makes the diff misleadingly big.

Reviewed-by: Matt Caswell <matt@openssl.org>
2015-05-12 10:24:48 -04:00
Matt Caswell
14def5f537 Check sk_SSL_CIPHER_new_null return value
If sk_SSL_CIPHER_new_null() returns NULL then ssl_bytes_to_cipher_list()
should also return NULL.

Based on an original patch by mrpre <mrpre@163.com>.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-05-11 11:47:19 +01:00
Rich Salz
16f8d4ebf0 memset, memcpy, sizeof consistency fixes
Just as with the OPENSSL_malloc calls, consistently use sizeof(*ptr)
for memset and memcpy.  Remove needless casts for those functions.
For memset, replace alternative forms of zero with 0.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-05-05 22:18:59 -04:00
Rich Salz
b4faea50c3 Use safer sizeof variant in malloc
For a local variable:
        TYPE *p;
Allocations like this are "risky":
        p = OPENSSL_malloc(sizeof(TYPE));
if the type of p changes, and the malloc call isn't updated, you
could get memory corruption.  Instead do this:
        p = OPENSSL_malloc(sizeof(*p));
Also fixed a few memset() calls that I noticed while doing this.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-05-04 15:00:13 -04:00
Rich Salz
25aaa98aa2 free NULL cleanup -- coda
After the finale, the "real" final part. :)  Do a recursive grep with
"-B1 -w [a-zA-Z0-9_]*_free" to see if any of the preceeding lines are
an "if NULL" check that can be removed.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-05-01 14:37:16 -04:00
Rich Salz
666964780a Remove goto inside an if(0) block
There were a dozen-plus instances of this construct:
   if (0) { label: ..... }

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-05-01 14:29:48 -04:00
Rich Salz
efa7dd6444 free NULL cleanup 11
Don't check for NULL before calling free functions. This gets:
        ERR_STATE_free
        ENGINE_free
        DSO_free
        CMAC_CTX_free
        COMP_CTX_free
        CONF_free
        NCONF_free NCONF_free_data _CONF_free_data
        A sk_free use within OBJ_sigid_free
        TS_TST_INFO_free (rest of TS_ API was okay)
        Doc update for UI_free (all uses were fine)
        X509V3_conf_free
        X509V3_section_free
        X509V3_string_free

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-05-01 10:15:18 -04:00
Rich Salz
b548a1f11c free null cleanup finale
Don't check for NULL before calling OPENSSL_free

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-05-01 10:02:07 -04:00
Rich Salz
222561fe8e free NULL cleanup 5a
Don't check for NULL before calling a free routine.  This gets X509_.*free:
    x509_name_ex_free X509_policy_tree_free X509_VERIFY_PARAM_free
    X509_STORE_free X509_STORE_CTX_free X509_PKEY_free
    X509_OBJECT_free_contents X509_LOOKUP_free X509_INFO_free

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-04-30 17:33:59 -04:00
Rich Salz
b196e7d936 remove malloc casts
Following ANSI C rules, remove the casts from calls to
OPENSSL_malloc and OPENSSL_realloc.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-04-28 15:28:14 -04:00
Viktor Dukhovni
61986d32f3 Code style: space after 'if'
Reviewed-by: Matt Caswell <matt@openssl.org>
2015-04-16 13:44:59 -04:00
Rich Salz
e0e920b1a0 free NULL cleanup 9
Ongoing work to skip NULL check before calling free routine.  This gets:
    ecp_nistz256_pre_comp_free nistp224_pre_comp_free nistp256_pre_comp_free
    nistp521_pre_comp_free PKCS7_free PKCS7_RECIP_INFO_free
    PKCS7_SIGNER_INFO_free sk_PKCS7_pop_free PKCS8_PRIV_KEY_INFO_free
    PKCS12_free PKCS12_SAFEBAG_free PKCS12_free sk_PKCS12_SAFEBAG_pop_free
    SSL_CONF_CTX_free SSL_CTX_free SSL_SESSION_free SSL_free ssl_cert_free
    ssl_sess_cert_free

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2015-04-11 16:32:54 -04:00
Rich Salz
62adbcee39 free NULL cleanup 10
Avoid checking for NULL before calling free functions.  This gets
ssl.*free:
    ssl_sess_cert_free ssl_free ssl_excert_free ssl_cert_free
    SSL_free SSL_SRP_CTX_free SSL_SESSION_free SSL_CTX_free
    SSL_CTX_SRP_CTX_free SSL_CONF_CTX_free

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2015-04-11 10:22:36 -04:00
Matt Caswell
295c3f4111 Move s->rstate to s->rlayer.rstate
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-26 15:02:00 +00:00
Matt Caswell
c036e210f3 Remove RECORD_LAYER_set_ssl and introduce RECORD_LAYER_init
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-26 15:01:59 +00:00
Matt Caswell
f161995e0e Introduce the functions RECORD_LAYER_release, RECORD_LAYER_read_pending, and
RECORD_LAYER_write_pending.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-26 15:01:59 +00:00
Matt Caswell
af9752e5fa Create RECORD_LAYER_clear function.
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-26 15:01:59 +00:00
Matt Caswell
4e08d4a84c Move s->s3->wrec to s>rlayer>wrec
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-26 13:53:07 +00:00
Matt Caswell
cd986e5586 Move s->s3->rrec to s->rlayer->rrec
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-26 13:53:07 +00:00
Matt Caswell
ab97b2cd43 Move s->s3->wbuf to s->rlayer->wbuf
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-26 13:53:07 +00:00
Matt Caswell
db9a32e719 Encapsulate access to s->s3->wbuf
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-26 13:53:07 +00:00
Matt Caswell
33d23b87a0 Move s->s3->rrec into s->rlayer
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-26 13:53:07 +00:00
Matt Caswell
28d59af874 Encapsulate SSL3_BUFFER and all access to s->s3->rbuf.
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-26 13:53:07 +00:00
Matt Caswell
52e1d7b152 Create a RECORD_LAYER structure and move read_ahead into it.
Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-26 13:53:07 +00:00
Matt Caswell
17dd65e6e1 Resolve swallowed returns codes
The recent updates to libssl to enforce stricter return code checking, left
a small number of instances behind where return codes were being swallowed
(typically because the function they were being called from was declared as
void). This commit fixes those instances to handle the return codes more
appropriately.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-25 18:52:13 +00:00
Rich Salz
ca3a82c3b3 free NULL cleanup
This commit handles BIO_ACCEPT_free BIO_CB_FREE BIO_CONNECT_free
BIO_free BIO_free_all BIO_vfree

Reviewed-by: Matt Caswell <matt@openssl.org>
2015-03-25 11:31:18 -04:00
Matt Caswell
266483d2f5 RAND_bytes updates
Ensure RAND_bytes return value is checked correctly, and that we no longer
use RAND_pseudo_bytes.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-25 12:38:07 +00:00
Kurt Roeckx
24a0d3933d Make sure that cert is never NULL
Also removes for it being NULL

Reviewed-by: Matt Caswell <matt@openssl.org>
2015-03-23 21:08:20 +01:00
Matt Caswell
69f6823748 Fix missing return value checks
Ensure that all functions have their return values checked where
appropriate. This covers all functions defined and called from within
libssl.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-03-23 15:23:11 +00:00
David Woodhouse
504e643e09 Add DTLS to SSL_get_version
Reviewed-by: Emilia Käsper <emilia@openssl.org>
2015-03-20 12:00:02 +00:00
Kurt Roeckx
2c3823491d Remove ssl_cert_inst()
It created the cert structure in SSL_CTX or SSL if it was NULL, but they can
never be NULL as the comments already said.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
2015-03-15 12:15:08 +01:00
Rich Salz
10bf4fc2c3 Merge OPENSSL_NO_EC{DH,DSA} into OPENSSL_NO_EC
Suggested by John Foley <foleyj@cisco.com>.

Reviewed-by: Matt Caswell <matt@openssl.org>
2015-03-11 09:29:37 -04:00
Matt Caswell
3ffbe00808 Apache Traffic Server has a need to set the rbio without touching the wbio.
There is no mechanism to do that at the moment - SSL_set_bio makes changes
to the wbio even if you pass in SSL_get_wbio().

This commit introduces two new API functions SSL_set_rbio() and
SSL_set_wbio(). These do the same job as SSL_set_bio() except they enable
you to manage the rbio and wbio individually.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-02-07 14:29:16 +00:00
Rich Salz
9e9858d1cf dead code cleanup: #if 0 in ssl
I left many "#if 0" lines, usually because I thought we would
probably want to revisit them later, or because they provided
some useful internal documentation tips.

Reviewed-by: Andy Polyakov <appro@openssl.org>
2015-02-06 10:52:12 -05:00
Rich Salz
5b18d3025c util/mkstack.pl now generates entire safestack.h
The mkstack.pl script now generates the entire safestack.h file.
It generates output that follows the coding style.
Also, removed all instances of the obsolete IMPLEMENT_STACK_OF
macro.

Reviewed-by: Andy Polyakov <appro@openssl.org>
2015-02-06 10:47:53 -05:00
Rich Salz
8dd94afb18 Live code cleanup; #if 1 removal
A few minor cleanups to remove pre-processor "#if 1" stuff.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-02-05 11:47:02 -05:00
Dr. Stephen Henson
156a872233 Add SSL_get_extms_support documentation.
Document SSL_get_extms_support().

Modify behaviour of SSL_get_extms_support() so it returns -1 if the
master secret support of the peer is not known (e.g. handshake in progress).
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
2015-02-03 14:50:08 +00:00
Dr. Stephen Henson
c536461499 Ctrl to retrieve extms support.
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
2015-02-03 14:50:07 +00:00
Dr. Stephen Henson
48fbcbacd2 Utility function to retrieve handshake hashes.
Retrieve handshake hashes in a separate function. This tidies the existing
code and will be used for extended master secret generation.
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
2015-02-03 14:50:07 +00:00
Rich Salz
68fd6dce73 Remove support for opaque-prf
An expired IETF Internet-Draft (seven years old) that nobody
implements, and probably just as good as NSA DRBG work.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-01-28 15:37:16 -05:00
Rich Salz
63c574f6a6 OPENSSL_NO_XXX cleanup: OPENSSL_NO_BUF_FREELISTS
Remove OPENSSL_NO_BUF_FREELISTS. This was turned on by default,
so the work here is removing the 'maintain our own freelist' code.
Also removed a minor old Windows-multibyte/widechar conversion flag.

Reviewed-by: Andy Polyakov <appro@openssl.org>
2015-01-27 16:43:53 -05:00
Matt Caswell
35a1cc90bc More comment realignment
Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-01-22 09:20:10 +00:00
Matt Caswell
0f113f3ee4 Run util/openssl-format-source -v -c .
Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-01-22 09:20:09 +00:00
Matt Caswell
dbd87ffc21 indent has problems with comments that are on the right hand side of a line.
Sometimes it fails to format them very well, and sometimes it corrupts them!
This commit moves some particularly problematic ones.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-01-22 09:20:08 +00:00
Rich Salz
6d23cf9744 RT3548: Remove unsupported platforms
This last one for this ticket.  Removes WIN16.
So long, MS_CALLBACK and MS_FAR.  We won't miss you.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-01-12 17:30:54 -05:00
Emilia Kasper
ac8e9cbe14 Only inherit the session ID context in SSL_set_SSL_CTX if the existing
context was also inherited (matches that of the existing SSL_CTX).

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-01-06 23:09:25 +01:00
Matt Caswell
3a83462dfe Further comment amendments to preserve formatting prior to source reformat
Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-01-06 15:45:25 +00:00
Adam Langley
61aa44ca99 Ensure that the session ID context of an SSL* is updated
when its SSL_CTX is updated.

From BoringSSL commit
https://boringssl.googlesource.com/boringssl/+/a5dc545bbcffd9c24cebe65e9ab5ce72d4535e3a

Reviewed-by: Rich Salz <rsalz@openssl.org>
2015-01-05 17:31:56 +01:00
Piotr Sikora
e783bae26a Fix building with no-srtp
RT3638

Reviewed-by: Emilia Käsper <emilia@openssl.org>
2015-01-05 14:17:22 +00:00
Richard Levitte
a501f647aa Clear warnings/errors within CIPHER_DEBUG code sections
Reviewed-by: Tim Hudson <tjh@openssl.org>
2014-12-17 10:15:09 +01:00
Matt Caswell
af6e2d51bf Add OPENSSL_NO_ECDH guards
Reviewed-by: Emilia Käsper <emilia@openssl.org>
2014-12-16 14:13:45 +00:00
Matt Caswell
76e6509085 Fix memory leak in SSL_new if errors occur.
Reviewed-by: Richard Levitte <levitte@openssl.org>
2014-12-08 16:42:59 +00:00
Dr. Stephen Henson
00b4ee7664 Remove some unnecessary OPENSSL_FIPS references
FIPS_mode() exists in all versions of OpenSSL but always returns 0 if OpenSSL is not FIPS
capable.
Reviewed-by: Tim Hudson <tjh@openssl.org>
2014-12-08 13:18:43 +00:00
Kurt Roeckx
45f55f6a5b Remove SSLv2 support
The only support for SSLv2 left is receiving a SSLv2 compatible client hello.

Reviewed-by: Richard Levitte <levitte@openssl.org>
2014-12-04 11:55:03 +01:00
Matt Caswell
59669b6abf Remove instances in libssl of the constant 28 (for size of IPv4 header + UDP)
and instead use the value provided by the underlying BIO. Also provide some
new DTLS_CTRLs so that the library user can set the mtu without needing to
know this constant. These new DTLS_CTRLs provide the capability to set the
link level mtu to be used (i.e. including this IP/UDP overhead). The previous
DTLS_CTRLs required the library user to subtract this overhead first.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2014-12-03 09:24:12 +00:00
Dr. Stephen Henson
14e14bf696 Copy negotiated parameters in SSL_set_SSL_CTX.
SSL_set_SSL_CTX is used to change the SSL_CTX for SNI, keep the
supported signature algorithms and raw cipherlist.
Reviewed-by: Tim Hudson <tjh@openssl.org>
2014-10-24 13:46:37 +01:00
Bodo Moeller
8cb30232ed When processing ClientHello.cipher_suites, don't ignore cipher suites
listed after TLS_FALLBACK_SCSV.

RT: 3575
Reviewed-by: Emilia Kasper <emilia@openssl.org>
2014-10-21 22:24:42 +02:00
Bodo Moeller
cf6da05304 Support TLS_FALLBACK_SCSV.
Reviewed-by: Stephen Henson <steve@openssl.org>
2014-10-15 04:03:28 +02:00
Dr. Stephen Henson
ecf4d66090 Custom extension revision.
Use the same structure for client and server custom extensions.

Add utility functions in new file t1_ext.c.
Use new utility functions to handle custom server and client extensions
and remove a lot of code duplication.
Reviewed-by: Emilia Käsper <emilia@openssl.org>
2014-08-28 17:06:52 +01:00
Dr. Stephen Henson
b83294fe30 Revision of custom extension code.
Move custom extension structures from SSL_CTX to CERT structure.

This change means the form can be revised in future without binary
compatibility issues. Also since CERT is part of SSL structures
so per-SSL custom extensions could be supported in future as well as
per SSL_CTX.
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
2014-08-15 12:20:04 +01:00
Dr. Stephen Henson
b948ee27b0 Remove all RFC5878 code.
Remove RFC5878 code. It is no longer needed for CT and has numerous bugs
2014-07-04 13:26:35 +01:00
Kurt Roeckx
4ee356686f Check sk_SSL_CIPHER_num() after assigning sk. 2014-05-12 22:56:13 +01:00
Günther Noack
308505b838 Avoid out-of-bounds write in SSL_get_shared_ciphers
PR: 3317
2014-05-11 23:52:47 +01:00
Dr. Stephen Henson
b362ccab5c Security framework.
Security callback: selects which parameters are permitted including
sensible defaults based on bits of security.

The "parameters" which can be selected include: ciphersuites,
curves, key sizes, certificate signature algorithms, supported
signature algorithms, DH parameters, SSL/TLS version, session tickets
and compression.

In some cases prohibiting the use of a parameters will mean they are
not advertised to the peer: for example cipher suites and ECC curves.
In other cases it will abort the handshake: e.g DH parameters or the
peer key size.

Documentation to follow...
2014-03-28 14:56:30 +00:00
Dr. Stephen Henson
8b8e5bed23 Allow return of supported ciphers.
New function ssl_cipher_disabled.

Check for disabled client ciphers using ssl_cipher_disabled.

New function to return only supported ciphers.

New option to ciphers utility to print only supported ciphers.
2014-03-28 14:49:04 +00:00
Dr. Stephen Henson
09599b52d4 Auto DH support.
Add auto DH parameter support. This is roughly equivalent to the
ECDH auto curve selection but for DH. An application can just call

SSL_CTX_set_auto_dh(ctx, 1);

and appropriate DH parameters will be used based on the size of the
server key.

Unlike ECDH there is no way a peer can indicate the range of DH parameters
it supports. Some peers cannot handle DH keys larger that 1024 bits for
example. In this case if you call:

SSL_CTX_set_auto_dh(ctx, 2);

Only 1024 bit DH parameters will be used.

If the server key is 7680 bits or more in size then 8192 bit DH parameters
will be used: these will be *very* slow.

The old export ciphersuites aren't supported but those are very
insecure anyway.
2014-03-28 14:49:04 +00:00
Dr. Stephen Henson
daddd9a950 Option to set current cert to server certificate. 2014-02-21 19:44:09 +00:00
Dr. Stephen Henson
ba168244a1 Add new function SSL_CTX_get_ssl_method().
Partial fix for PR#3183.
2014-01-16 14:07:46 +00:00
Daniel Kahn Gillmor
5a21cadbeb use SSL_kDHE throughout instead of SSL_kEDH
DHE is the standard term used by the RFCs and by other TLS
implementations.  It's useful to have the internal variables use the
standard terminology.

This patch leaves a synonym SSL_kEDH in place, though, so that older
code can still be built against it, since that has been the
traditional API.  SSL_kEDH should probably be deprecated at some
point, though.
2014-01-09 15:43:28 +00:00
Daniel Kahn Gillmor
4082fea81c use SSL_kECDHE throughout instead of SSL_kEECDH
ECDHE is the standard term used by the RFCs and by other TLS
implementations.  It's useful to have the internal variables use the
standard terminology.

This patch leaves a synonym SSL_kEECDH in place, though, so that older
code can still be built against it, since that has been the
traditional API.  SSL_kEECDH should probably be deprecated at some
point, though.
2014-01-09 15:43:27 +00:00
Dr. Stephen Henson
7af31968dd Verify parameter retrieval functions.
New functions to retrieve internal pointers to X509_VERIFY_PARAM
for SSL_CTX and SSL structures.
(cherry picked from commit be0c9270690ed9c1799900643cab91de146de857)
2013-12-13 15:39:55 +00:00
Dr. Stephen Henson
a25f9adc77 New functions to retrieve certificate from SSL_CTX
New functions to retrieve current certificate or private key
from an SSL_CTX.

Constify SSL_get_private_key().
2013-11-18 18:56:48 +00:00
Piotr Sikora
2911575c6e Fix compilation with no-nextprotoneg.
PR#3106
2013-11-14 01:20:12 +00:00
Ben Laurie
5eda213ebe More cleanup. 2013-09-06 13:59:14 +01:00
Scott Deboy
36086186a9 Add callbacks supporting generation and retrieval of supplemental data entries, facilitating RFC 5878 (TLS auth extensions)
Removed prior audit proof logic - audit proof support was implemented using the generic TLS extension API
Tests exercising the new supplemental data registration and callback api can be found in ssltest.c.
Implemented changes to s_server and s_client to exercise supplemental data callbacks via the -auth argument, as well as additional flags to exercise supplemental data being sent only during renegotiation.
2013-09-06 13:59:13 +01:00
Dr. Stephen Henson
14536c8c9c Make no-ec compilation work. 2013-08-17 17:41:13 +01:00
Adam Langley
6f017a8f9d Support ALPN.
This change adds support for ALPN[1] in OpenSSL. ALPN is the IETF
blessed version of NPN and we'll be supporting both ALPN and NPN for
some time yet.

[1] https://tools.ietf.org/html/draft-ietf-tls-applayerprotoneg-00

Conflicts:
	ssl/ssl3.h
	ssl/t1_lib.c
2013-07-22 15:28:20 +01:00
Trevor
5382adbf2c Cosmetic touchups. 2013-06-28 16:01:12 +01:00
Trevor
a398f821fa Add support for arbitrary TLS extensions.
Contributed by Trevor Perrin.
2013-06-12 17:01:13 +01:00
Dr. Stephen Henson
2f0275a4c3 Disable compression for DTLS.
The only standard compression method is stateful and is incompatible with
DTLS.
2013-03-19 13:43:06 +00:00
Dr. Stephen Henson
cbd64894ec Use enc_flags when deciding protocol variations.
Use the enc_flags field to determine whether we should use explicit IV,
signature algorithms or SHA256 default PRF instead of hard coding which
versions support each requirement.
2013-03-18 15:03:58 +00:00
Dr. Stephen Henson
ddd13d677b fix typo and warning 2012-11-19 02:46:46 +00:00
Dr. Stephen Henson
8bb870df9e new feature: if ctx==NULL in SSL_CTX_ctrl perform syntax checking only for some operations (currently curves and signature algorithms) 2012-11-08 14:24:51 +00:00
Dr. Stephen Henson
323fa64559 If OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL is set allow the use of "SCSV" as
a ciphersuite to position the SCSV value in different places for testing
purposes.
2012-09-30 12:39:27 +00:00
Dr. Stephen Henson
94a209d8e1 Add ctrl and utility functions to retrieve raw cipher list sent by client in
client hello message. Previously this could only be retrieved on an initial
connection and it was impossible to determine the cipher IDs of any uknown
ciphersuites.
2012-09-12 13:57:48 +00:00
Dr. Stephen Henson
e5db9c3b67 Minor enhancement to PR#2836 fix. Instead of modifying SSL_get_certificate
change the current certificate (in s->cert->key) to the one used and then
SSL_get_certificate and SSL_get_privatekey will automatically work.
2012-09-11 13:34:08 +00:00
Ben Laurie
2daceb0342 Call OCSP Stapling callback after ciphersuite has been chosen, so the
right response is stapled. Also change SSL_get_certificate() so it
returns the certificate actually sent.  See
http://rt.openssl.org/Ticket/Display.html?id=2836.
2012-09-11 12:57:46 +00:00
Dr. Stephen Henson
d47c01a31a perform sanity checks on server certificate type as soon as it is received instead of waiting until server key exchange 2012-08-31 11:18:54 +00:00
Dr. Stephen Henson
ed83ba5321 Add compilation flag to disable certain protocol checks and allow use of
some invalid operations for testing purposes. Currently this can be used
to sign using digests the peer doesn't support, EC curves the peer
doesn't support and use certificates which don't match the type associated
with a ciphersuite.
2012-08-29 13:18:34 +00:00
Dr. Stephen Henson
2ea8035460 Add three Suite B modes to TLS code, supporting RFC6460. 2012-08-15 15:15:05 +00:00
Dr. Stephen Henson
6dbb6219e7 Make tls1_check_chain return a set of flags indicating checks passed
by a certificate chain. Add additional tests to handle client
certificates: checks for matching certificate type and issuer name
comparison.

Print out results of checks for each candidate chain tested in
s_server/s_client.
2012-07-27 13:39:23 +00:00
Dr. Stephen Henson
b7bfe69b66 New function ssl_set_client_disabled to set masks for any ciphersuites
that are disabled for this session (as opposed to always disabled by
configuration).
2012-07-18 14:09:46 +00:00
Dr. Stephen Henson
87adf1fa96 new function SSL_is_server to which returns 1 is the corresponding SSL context is for a server 2012-07-03 14:25:17 +00:00
Dr. Stephen Henson
18d7158809 Add certificate callback. If set this is called whenever a certificate
is required by client or server. An application can decide which
certificate chain to present based on arbitrary criteria: for example
supported signature algorithms. Add very simple example to s_server.
This fixes many of the problems and restrictions of the existing client
certificate callback: for example you can now clear existing certificates
and specify the whole chain.
2012-06-29 14:24:42 +00:00
Dr. Stephen Henson
d61ff83be9 Add new "valid_flags" field to CERT_PKEY structure which determines what
the certificate can be used for (if anything). Set valid_flags field
in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
to have similar checks in it.

Add new "cert_flags" field to CERT structure and include a "strict mode".
This enforces some TLS certificate requirements (such as only permitting
certificate signature algorithms contained in the supported algorithms
extension) which some implementations ignore: this option should be used
with caution as it could cause interoperability issues.
2012-06-28 12:45:49 +00:00
Dr. Stephen Henson
a5ee80b910 Make it possible to delete all certificates from an SSL structure. 2012-06-18 12:56:59 +00:00
Ben Laurie
71fa451343 Version skew reduction: trivia (I hope). 2012-06-03 22:00:21 +00:00
Ben Laurie
a9e1c50bb0 RFC 5878 support. 2012-05-30 10:10:58 +00:00
Dr. Stephen Henson
ce33b42bc6 oops, not yet ;-) 2012-04-23 21:58:29 +00:00
Dr. Stephen Henson
579d553464 update NEWS 2012-04-23 21:56:33 +00:00
Dr. Stephen Henson
a43526302f Add support for automatic ECDH temporary key parameter selection. When
enabled instead of requiring an application to hard code a (possibly
inappropriate) parameter set and delve into EC internals we just
automatically use the preferred curve.
2012-04-05 13:38:27 +00:00
Dr. Stephen Henson
d0595f170c Initial revision of ECC extension handling.
Tidy some code up.

Don't allocate a structure to handle ECC extensions when it is used for
default values.

Make supported curves configurable.

Add ctrls to retrieve shared curves: not fully integrated with rest of
ECC code yet.
2012-03-28 15:05:04 +00:00
Dr. Stephen Henson
5421196eca ABI compliance fixes.
Move new structure fields to end of structures.
2012-02-22 15:39:54 +00:00
Dr. Stephen Henson
74b4b49494 SSL export fixes (from Adam Langley) [original from 1.0.1] 2012-02-22 15:06:56 +00:00
Dr. Stephen Henson
c526ed410c Revise ssl code to use a CERT_PKEY structure when outputting a
certificate chain instead of an X509 structure.

This makes it easier to enhance code in future and the chain
output functions have access to the CERT_PKEY structure being
used.
2012-01-26 16:00:34 +00:00