The previous commits put in place the logic to exchange key_share data. We
now need to do something with that information. In <= TLSv1.2 the equivalent
of the key_share extension is the ServerKeyExchange and ClientKeyExchange
messages. With key_share those two messages are no longer necessary.

The commit removes the SKE and CKE messages from the TLSv1.3 state machine.
TLSv1.3 is completely different to TLSv1.2 in the messages that it sends
and the transitions that are allowed. Therefore, rather than extend the
existing <=TLS1.2 state transition functions, we create a whole new set for
TLSv1.3. Intially these are still based on the TLSv1.2 ones, but over time
they will be amended.

The new TLSv1.3 transitions remove SKE and CKE completely. There's also some
cleanup for some stuff which is not relevant to TLSv1.3 and is easy to
remove, e.g. the DTLS support (we're not doing DTLSv1.3 yet) and NPN.

I also disable EXTMS for TLSv1.3. Using it was causing some added
complexity, so rather than fix it I removed it, since eventually it will not
be needed anyway.
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

Also we disable TLS1.3 by default (use enable-tls1_3 to re-enable). This is
because this is a WIP and will not be interoperable with any other TLS1.3
implementation.

Finally, we fix some tests that started failing when TLS1.3 was disabled by
default.
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

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

Some compilers complain about unused variables, and some tests do
not run well without OCSP.
Reviewed-by: NRich Salz <rsalz@openssl.org>

The previous commit revealed a long standing problem where CertStatus
processing was broken in DTLS. This would have been revealed by better
testing - so add some!
Reviewed-by: NRich Salz <rsalz@openssl.org>

The new curves test did not take into account no-ec2m
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>
GH: #1472

Reviewed-by: NStephen Henson <steve@openssl.org>

Make maximum fragment length configurable and add various fragmentation
tests, in addition to the existing multi-buffer tests.
Reviewed-by: NRich Salz <rsalz@openssl.org>

In practice, CT isn't really functional without EC anyway, as most logs
use EC keys. So, skip loading the log list with no-ec, and skip CT tests
completely in that conf.
Reviewed-by: NRich Salz <rsalz@openssl.org>

This commit only ports existing tests, and adds some coverage for
resumption. We don't appear to have any handshake tests that cover SCT
validation success, and this commit doesn't change that.
Reviewed-by: NRich Salz <rsalz@openssl.org>

OPENSSL_NO_NEXTPROTONEG only disables NPN, not ALPN
Reviewed-by: NRichard Levitte <levitte@openssl.org>

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

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

Fix the 80-test_ssl_test_ctx and 80-test_ssl_new tests when used with the
no-nextprotoneg option
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Misc fixes impacting no-tls1_2. Also fixes no-dtls1_2.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Also fixes some other options like no-dgram and no-sock.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Systematically test every server-side version downgrade or upgrade.

Client version upgrade or downgrade could be tested analogously but will
be done in a later change.
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

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

If configuring for anything other than the default TLS protocols then
test failures were occuring.
Reviewed-by: NEmilia Käsper <emilia@openssl.org>

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

When session tickets are used, it's possible that SNI might swtich the
SSL_CTX on an SSL. Normally, this is not a problem, because the
initial_ctx/session_ctx are used for all session ticket/id processes.

However, when the SNI callback occurs, it's possible that the callback
may update the options in the SSL from the SSL_CTX, and this could
cause SSL_OP_NO_TICKET to be set. If this occurs, then two bad things
can happen:

1. The session ticket TLSEXT may not be written when the ticket expected
flag is set. The state machine transistions to writing the ticket, and
the client responds with an error as its not expecting a ticket.
2. When creating the session ticket, if the ticket key cb returns 0
the crypto/hmac contexts are not initialized, and the code crashes when
trying to encrypt the session ticket.

To fix 1, if the ticket TLSEXT is not written out, clear the expected
ticket flag.
To fix 2, consider a return of 0 from the ticket key cb a recoverable
error, and write a 0 length ticket and continue. The client-side code
can explicitly handle this case.

Fix these two cases, and add unit test code to validate ticket behavior.
Reviewed-by: NEmilia Käsper <emilia@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1098)

Port client auth tests to the new framework, add coverage. The old tests
were only testing success, and only for some protocol versions; the new
tests add all protocol versions and various failure modes.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Trying to use normal perl conditions to conditionally 'use' a perl
module didn't quite work.  Using the 'if' module to do so does work.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

As it turns out default glob's behaviour for quoted argument varies
from version to version, making it impossible to Configure or run
tests in some cases. The reason for quoting globs was to accommodate
source path with spaces in its name, which was treated by default glob
as multiple paths. File::Glob::glob on the other hand doesn't consider
spaces as delimiters and therefore works with unquoted patterns.

[Unfortunaltely File::Glob::glob, being too csh-ly, doesn't work
on VMS, hence the "pinning" is conditional.]
Reviewed-by: NRichard Levitte <levitte@openssl.org>

RT#4486
Reviewed-by: NMatt Caswell <matt@openssl.org>

In some cases, perl's glob() thinks it needs to return file names with
generation numbers, such as when a file name pattern includes two
periods.  Constructing other file names by simple appending to file
names with generation numbers isn't a good idea, so for the VMS case,
just peal the generation numbers if they are there.
Fortunately, this is easy, as the returned generation number delimiter
will always be a semi-colon.
Reviewed-by: NRich Salz <rsalz@openssl.org>

The old proxy tests test the implementation of an application proxy
policy callback defined in the test itself, which is not particularly
useful.

It is, however, useful to test cert verify overrides in
general. Therefore, replace these tests with tests for cert verify
callback behaviour.

Also glob the ssl test inputs on the .in files to catch missing
generated files.
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

The simple reason is that the pre-generated files are mainly for Unix.
The VMS variants look slightly different, so comparing will always fail.
Reviewed-by: NEmilia Käsper <emilia@openssl.org>

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

Currently, SSL tests are configured via command-line switches to
ssltest.c. This results in a lot of duplication between ssltest.c and
apps, and a complex setup. ssltest.c is also simply old and needs
maintenance.

Instead, we already have a way to configure SSL servers and clients, so
we leverage that. SSL tests can now be configured from a configuration
file. Test servers and clients are configured using the standard
ssl_conf module. Additional test settings are configured via a test
configuration.

Moreover, since the CONF language involves unnecessary boilerplate, the
test conf itself is generated from a shorter Perl syntax.

The generated testcase files are checked in to the repo to make
it easier to verify that the intended test cases are in fact run; and to
simplify debugging failures.

To demonstrate the approach, min/max protocol tests are converted to the
new format. This change also fixes MinProtocol and MaxProtocol
handling. It was previously requested that an SSL_CTX have both the
server and client flags set for these commands; this clearly can never work.

Guide to this PR:
 - test/ssl_test.c - test framework
 - test/ssl_test_ctx.* - test configuration structure
 - test/handshake_helper.* - new SSL test handshaking code
 - test/ssl-tests/ - test configurations
 - test/generate_ssl_tests.pl - script for generating CONF-style test
   configurations from perl inputs
Reviewed-by: NRichard Levitte <levitte@openssl.org>