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

- Always process ALPN (previously there was an early return in the
  certificate status handling)
- Don't send a duplicate alert. Previously, both
  ssl_check_clienthello_tlsext_late and its caller would send an
  alert. Consolidate alert sending code in the caller.

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

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

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1281)

Reviewed-by: Richard Levitte <levitte@openssl.org>

After the refactor of tls_process_key_exchange(), this commit tidies up
some loose ends.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Continuing from the previous commit. Refactor tls_process_key_exchange() to
split out into a separate function the ECDHE aspects.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Continuing from the previous commit. Refactor tls_process_key_exchange() to
split out into a separate function the DHE aspects.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Continuing from the previous commit. Refactor tls_process_key_exchange() to
split out into a separate function the SRP aspects.

Reviewed-by: Richard Levitte <levitte@openssl.org>

The tls_process_key_exchange() function is too long. This commit starts
the process of splitting it up by moving the PSK preamble code to a
separate function.

Reviewed-by: Richard Levitte <levitte@openssl.org>

The function tls_process_key_exchange() is too long. This commit moves
the PSK preamble processing out to a separate function.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Narrow the scope of the local vars in preparation for split up this
function.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Add some more tests for sessions following on from the previous commit
to ensure the callbacks are called when appropriate.

Reviewed-by: Richard Levitte <levitte@openssl.org>

If the SSL_SESS_CACHE_NO_INTERNAL_STORE cache mode is used then we weren't
removing sessions from the external cache, e.g. if an alert occurs the
session is supposed to be automatically removed.

Reviewed-by: Richard Levitte <levitte@openssl.org>

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

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

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

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

If underlying type is boolean don't check field is NULL.

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

Don't call strncpy with strlen of the source as the length. Don't call
strlen multiple times. Eventually we will want to replace this with a proper
PACKET style handling (but for construction of PACKETs instead of just
reading them as it is now). For now though this is safe because
PSK_MAX_IDENTITY_LEN will always fit into the destination buffer.

This addresses an OCAP Audit issue.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Reviewed-by: Richard Levitte <levitte@openssl.org>

Reviewed-by: Richard Levitte <levitte@openssl.org>

Continuing previous commit to break up the
tls_construct_client_key_exchange() function. This splits out the SRP
code.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Continuing previous commit to break up the
tls_construct_client_key_exchange() function. This splits out the GOST
code.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Continuing previous commit to break up the
tls_construct_client_key_exchange() function. This splits out the ECDHE
code.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Continuing previous commit to break up the
tls_construct_client_key_exchange() function. This splits out the DHE
code.

Reviewed-by: Richard Levitte <levitte@openssl.org>

The tls_construct_client_key_exchange() function is too long. This splits
out the construction of the PSK pre-amble into a separate function as well
as the RSA construction.

Reviewed-by: Richard Levitte <levitte@openssl.org>

This is in preparation for splitting up this over long function.

Reviewed-by: Richard Levitte <levitte@openssl.org>

The parameters should have parens around them when used.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Reviewed-by: Richard Levitte <levitte@openssl.org>

The f_err label is no longer needed so it can be removed.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Continuing from the previous commits, this splits out the GOST code into
a separate function from the process CKE code.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Continuing from the previous commits, this splits out the ECDHE code into
a separate function from the process CKE code.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Continuing from the previous commit, this splits out the DHE code into
a separate function from the process CKE code.

Reviewed-by: Richard Levitte <levitte@openssl.org>

The tls_process_client_key_exchange() function is far too long. This
splits out the PSK preamble processing, and the RSA processing into
separate functions.

Reviewed-by: Richard Levitte <levitte@openssl.org>

In preparation for splitting this function up into smaller functions this
commit reduces the scope of some of the variables to only be in scope for
the algorithm specific parts. In some cases that makes the error handling
more verbose than it needs to be - but we'll clean that up in a later
commit.

Reviewed-by: Richard Levitte <levitte@openssl.org>

This adds a new target 'build_programs' and makes 'build_apps' and
'build_tests' aliases for it, for backward compatibility.

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

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

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

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