Fix typo that stopped SSL_CTX_get_{first,next}_certificate from working.

A missing bounds check in the handling of the TLS heartbeat extension
can be used to reveal up to 64k of memory to a connected client or
server.

Thanks for Neel Mehta of Google Security for discovering this bug and to
Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
preparing the fix (CVE-2014-0160)
(cherry picked from commit 96db9023b881d7cd9f379b0c154650d6c108e9a3)

Enable TLS padding extension using official value from:

http://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml

Allow setting of security level in cipher string using the
@SECLEVEL=N syntax.

Since ssltest needs to test low security ciphersuites and keys
set security level to zero so they aren't rejected.

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...

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.

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.

(cherry picked from commit bc5ec653ba65fedb1619c8182088497de8a97a70)

(cherry picked from commit 1f44dac24d1cb752b1a06be9091bb03a88a8598e)

Don't clear verification errors from the error queue unless
SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR is set.

If errors occur during verification and SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR
is set return 2 so applications can issue warnings.
(cherry picked from commit 2dd6976f6d02f98b30c376951ac38f780a86b3b5)

Submitted by: Roumen Petrov

Although the memory allocated by compression methods is fixed and
cannot grow over time it can cause warnings in some leak checking
tools. The function SSL_COMP_free_compression_methods() will free
and zero the list of supported compression methods. This should
*only* be called in a single threaded context when an application
is shutting down to avoid interfering with existing contexts
attempting to look up compression methods.
(cherry picked from commit 976c58302b13d085edb3ab822f5eac4b2f1bff95)

(cherry picked from commit 3eddd1706a30cdf3dc9278692d8ee9038eac8a0d)

PR: 3201

(cherry picked from commit 3678161d717d0f46c5b5b052a6d6a33438b1df00)

When setting the current certificate check that it has a corresponding
private key.

New flags to build certificate chains. The can be used to rearrange
the chain so all an application needs to do is add all certificates
in arbitrary order and then build the chain to check and correct them.

Add verify error code when building chain.

Update docs.

(cherry picked from commit b709f8ef54b1c9ad513878ba0213aa651a9acef8)

Add the extension parser in the s_client, ocsp and x509 apps.

The flag SSL_OP_MSIE_SSLV2_RSA_PADDING hasn't done anything since OpenSSL
0.9.7h but deleting it will break source compatibility with any software
that references it. Restore it but #define to zero.
(cherry picked from commit b17d6b8d1d49fa4732deff17cfd1833616af0d9c)

Add the RFC6962 OIDs to the objects table.

(cherry picked from commit a2317c3ffde3f1f73bd7fa3f08e420fb09043905)