Here are the "rules" for handling flags that depend on #ifdef:

- Do not ifdef the enum.  Only ifdef the OPTIONS table.  All ifdef'd
  entries appear at the end; by convention "engine" is last.  This
  ensures that at run-time, the flag will never be recognized/allowed.
  The next two bullets entries are for silencing compiler warnings:
- In the while/switch parsing statement, use #ifdef for the body to
  disable it; leave the "case OPT_xxx:" and "break" statements outside
  the ifdef/ifndef.  See ciphers.c for example.
- If there are multiple options controlled by a single guard, OPT_FOO,
  OPT_BAR, etc., put a an #ifdef around the set, and then do "#else"
  and a series of case labels and a break. See OPENSSL_NO_AES in cms.c
  for example.
Reviewed-by: NMatt Caswell <matt@openssl.org>

I also re-ordered some of #ifdef's.
Reviewed-by: NMatt Caswell <matt@openssl.org>

Reviewed-by: NMatt Caswell <matt@openssl.org>

This is for consistency.
Additionally, have its presence define OPENSSL_SYS_WINDOWS as well.
Reviewed-by: NMatt Caswell <matt@openssl.org>

Signed-off-by: NRich Salz <rsalz@akamai.com>
Reviewed-by: NMatt Caswell <matt@openssl.org>

Signed-off-by: NRich Salz <rsalz@akamai.com>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

The code in bss_dgram.c checks if IP_MTUDISCOVER is defined, where it
should test for IP_MTU_DISCOVER

RT#3888
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

If a NewSessionTicket is received by a multi-threaded client when
attempting to reuse a previous ticket then a race condition can occur
potentially leading to a double free of the ticket data.

CVE-2015-1791

This also fixes RT#3808 where a session ID is changed for a session already
in the client session cache. Since the session ID is the key to the cache
this breaks the cache access.

Parts of this patch were inspired by this Akamai change:
https://github.com/akamai/openssl/commit/c0bf69a791239ceec64509f9f19fcafb2461b0d3Reviewed-by: NRich Salz <rsalz@openssl.org>

dtls1_get_message has an |mt| variable which is the type of the message that
is being requested. If it is negative then any message type is allowed.
However the value of |mt| is not checked in one of the main code paths, so a
peer can send a message of a completely different type and it will be
processed as if it was the message type that we were expecting. This has
very little practical consequences because the current behaviour will still
fail when the format of the message isn't as expected.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

Reviewed-by: NTim Hudson <tjh@openssl.org>

Reviewed-by: NMatt Caswell <matt@openssl.org>

Where we called openssl_cleanse, make sure we do it on all error
paths.  Be consistent in use of sizeof(foo) when possible.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

struct ccs_header_st is not used so it should be removed.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

Almost two months ago, the warning about non-existing config file was
supressed by setting the environment variable OPENSSL_CONF to /dev/null
everywhere.  Now that this warning is gone, that practice is no longer
needed.
Reviewed-by: NStephen Henson <steve@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>

The module loading feature got broken a while ago, so restore it, but
have it a bit more explicit this time around.
Reviewed-by: NStephen Henson <steve@openssl.org>

Reviewed-by: NTim Hudson <tjh@openssl.org>

RT 3871
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Create app_load_config(), a routine to load config file.  Remove the
"always load config" from the main app.  Change the places that used to
load config to call the new common routine.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

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

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

Using an enum with -Wswitch means all lookup routines handle
all cases.  Remove X509_LU_PKEY which was never used.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

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: NRichard Levitte <levitte@openssl.org>

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: NTim Hudson <tjh@openssl.org>

Signed-off-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NTim Hudson <tjh@openssl.org>

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: NNick Mathewson <nickm@torproject.org>
Signed-off-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NTim Hudson <tjh@openssl.org>

Signed-off-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NTim Hudson <tjh@openssl.org>

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: NNick Mathewson <nickm@torproject.org>
Signed-off-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NTim Hudson <tjh@openssl.org>

In master, the 'dh' command is gone, so use 'dhparam' instead to
determine if we're compiled with DH.

Also, set "@SECLEVEL=1" for the weak DH test, so that it actually
passes.
Reviewed-by: NDr Stephen Henson <steve@openssl.org>

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

Add support for PKCS#8 private key encryption using the scrypt algorithm
in the pkcs8 utility. Update documentation.
Reviewed-by: NRich Salz <rsalz@openssl.org>

This adds a new function which will encrypt a private key using PKCS#8
based on an X509_ALGOR structure and reimplements PKCS8_encrypt to use it.

Update pkcs8 utlity to use PKCS8_set0_pbe.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Set a specific error if the parameters are otherwise valid but exceed the
memory limit.
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

Add support for PKCS#12 and PBKDF2 password based encryption tests. Add
additional test data.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Also add more ciphersuite test coverage, and a negative test for
512-bit DHE.
Reviewed-by: NRich Salz <rsalz@openssl.org>
(cherry picked from commit 1ee85aab)

The size of the SRP extension can never be negative (the variable
|size| is unsigned). Therefore don't check if it is less than zero.

RT#3862
Reviewed-by: NRichard Levitte <levitte@openssl.org>

The return value of i2d functions can be negative if an error occurs.
Therefore don't assign the return value to an unsigned type and *then*
check if it is negative.

RT#3862
Reviewed-by: NRichard Levitte <levitte@openssl.org>

The members of struct timeval on OpenVMS are unsigned. The logic for
calculating timeouts needs adjusting to deal with this.

RT#3862
Reviewed-by: NRichard Levitte <levitte@openssl.org>

RT#3860
Reviewed-by: NTim Hudson <tjh@openssl.org>