The internal SRP function t_fromb64() converts from base64 to binary. It
does not validate that the size of the destination is sufficiently large -
that is up to the callers. In some places there was such a check, but not
in others.

Add an argument to t_fromb64() to provide the size of the destination
buffer and validate that we don't write too much data. Also add some sanity
checks to the callers where appropriate.

With thanks to Shi Lei for reporting this issue.

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

Don't call WPACKET_sub_memcpy(), WPACKET_sub_allocation_bytes() and
WPACKET_start_sub_packet_len() directly.

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

Remove extra indentation at the start of an "if".

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

Updated the construction code to use the new function. Also added some
convenience macros for WPACKET_sub_memcpy().

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

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

Also, enlarge test group 20 to include openssl commands that aren't
tested otherwise

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

RT#4674

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

Add comments, document -valid option.
Add some const qualifiers.

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1560)

Reviewed-by: Andy Polyakov <appro@openssl.org>

This flag got moved after -xarch=v9 in 1.1.0 and had the unexpected
side effect of the compiler building for 32-bit v8plusa instead of v9.

GH#1521
CLA: none; trivial

Signed-off-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1520)

it appears when using gcc/mingw:
```
apps/s_client.c:815:9: warning: variable 'at_eof' set but not used [-Wunused-but-set-variable]
     int at_eof = 0;
         ^~~~~~
```
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1512)

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

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

Traditionally Configure passed $ENV{PERL} to Makefile. But this
resulted in ambiguilty as Configure script could be executed by
interpreter different from one executing remaining scripts. Since
we separate compile- and run-time interpreters with HASHBANGPERL
variable, there is no reason to segment the build procedure.

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

A peer continually sending unrecognised warning alerts could mean that we
make no progress on a connection. We should abort rather than continuing if
we receive an unrecognised warning alert.

Thanks to Shi Lei for reporting this issue.

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

Addressing more feedback comments.

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

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

Two locations had the same loop for writing out a value. Pull it out into
a function.

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

This is an internal API. Some of the tests were for programmer erorr and
"should not happen" situations, so a soft assert is reasonable.

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

A few style tweaks here and there. The main change is that curr and
packet_len are now offsets into the buffer to account for the fact that
the pointers can change if the buffer grows. Also dropped support for the
WPACKET_set_packet_len() function. I thought that was going to be needed
but so far it hasn't been. It doesn't really work any more due to the
offsets change.

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

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

The PACKET documentation is already in packet_locl.h so it makes sense to
have the WPACKET documentation there as well.

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

The tests will only work in no-shared builds because WPACKET is an
internal only API that does not get exported by the shared library.

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

Otherwise a mem leak can occur.

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

Also added the WPACKET_cleanup() function to cleanup a WPACKET if we hit
an error.

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

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

No need to declare an explicit sub-packet. Just start one.

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

To avoid confusion with the read PACKET structure.

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

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

The DSO API was picky about casing of symbol names on VMS.

There's really no reason to be that picky, it's mostly just annoying.
Therefore, we take away the possibility to flag for a choice, and will
instead first try to find a symbol with exact case, and failing that,
we try to find it in upper case.

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

Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>

even when the public key is not present in an EC_KEY

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

With extensive help and feedback from Richard and Andy.

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

This is generalised by having the following macros for stuff that won't
be installed:

    NO_INST_LIB_CFLAGS, used instead of LIB_CFLAGS
    NO_INST_DSO_CFLAGS, used instead of DSO_CFLAGS
    NO_INST_BIN_CFLAGS, used instead of BIN_CFLAGS

They take values from corresponding target config fields if those are
defined, otherwise they take the respective values from LIB_CFLAGS,
DSO_CFLAGS and BIN_CFLAGS.

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

Send a bit information to the build file template functions.  For
src2obj(), the additional option 'product' holds the name of the final
file that the object file will go into.  Additionally, the diverse
functions will get the option 'installed', with a value that evaluates
true if the final product is to be installed, otherwise false.

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

VMS sets that errno when the device part of a file spec is malformed
or a logical name that doesn't exist.

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