typo in SSL_get_peer_cert_chain docs

RT: 3304
dso: eliminate VMS code on non-VMS systems

Even though the meat of dso_vms.c is compiled out on non-VMS builds,
the (pre-)compiler still traverses some of the macro handling. This
trips up at least one non-VMS build configuration, so this commit
makes the skip-VMS case more robust.

Signed-off-by: Geoff Thorpe <geoff@openssl.org>
Double free in i2o_ECPublicKey

PR: 3338
crypto/armcap.c: detect ARMv8 capabilities [in 32-bit build].
sha/asm/sha1-armv4-large.pl: add NEON and ARMv8 code paths.
sha/asm/sha256-armv4.pl: add ARMv8 code path.
C64x+ assembly pack: make it work with older toolchain.
C64x+ assembply pack: add RC4 module.
md5/asm/md5-[586|x86_64].pl: +15% on Atom.

[MD5 is hardly relevant, just cleaning up repository]
apps/s_server: document '-naccept' cmd-line argument

Signed-off-by: Geoff Thorpe <geoff@openssl.org>
- fix coverity issues 966593-966596
Set Enveloped data version to 2 if ktri version not zero.
Initialize num properly.

PR#3289
PR#3345
bignum: allow concurrent BN_MONT_CTX_set_locked()

The lazy-initialisation of BN_MONT_CTX was serialising all threads, as
noted by Daniel Sands and co at Sandia. This was to handle the case that
2 or more threads race to lazy-init the same context, but stunted all
scalability in the case where 2 or more threads are doing unrelated
things! We favour the latter case by punishing the former. The init work
gets done by each thread that finds the context to be uninitialised, and
we then lock the "set" logic after that work is done - the winning
thread's work gets used, the losing threads throw away what they've done.

Signed-off-by: Geoff Thorpe <geoff@openssl.org>
evp: prevent underflow in base64 decoding

This patch resolves RT ticket #2608.

Thanks to Robert Dugal for originally spotting this, and to David
Ramos for noticing that the ball had been dropped.

Signed-off-by: Geoff Thorpe <geoff@openssl.org>
Fixed NULL pointer dereference in PKCS7_dataDecode reported by David Ramos in PR#3339
fix coverity issue 966597 - error line is not always initialised
PR#3342 fix resource leak coverity issue 966577
coverity 966576 - close socket in error path
s_client/s_server: support unix domain sockets

The "-unix <path>" argument allows s_server and s_client to use a unix
domain socket in the filesystem instead of IPv4 ("-connect", "-port",
"-accept", etc). If s_server exits gracefully, such as when "-naccept"
is used and the requested number of SSL/TLS connections have occurred,
then the domain socket file is removed. On ctrl-C, it is likely that
the stale socket file will be left over, such that s_server would
normally fail to restart with the same arguments. For this reason,
s_server also supports an "-unlink" option, which will clean up any
stale socket file before starting.

If you have any reason to want encrypted IPC within an O/S instance,
this concept might come in handy. Otherwise it just demonstrates that
there is nothing about SSL/TLS that limits it to TCP/IP in any way.

(There might also be benchmarking and profiling use in this path, as
unix domain sockets are much lower overhead than connecting over local
IP addresses).

Signed-off-by: Geoff Thorpe <geoff@openssl.org>
Return an error if no recipient type matches.

If the key type does not match any CMS recipient type return
an error instead of using a random key (MMA mitigation). This
does not leak any useful information to an attacker.

PR#3348