`NULL` as defined by the standard is not guaranteed to be of a pointer
type. In order to make sure that in vararg API's a pointer type is used,
define our own version and use that one internally.
Signed-off-by: Steffen Jaeckel <s@jaeckel.eu>
Wrap signature format in #ifdef LTC_SSH
Update docs
Code review fixes
Replace strcmp/memcmp with XSTRCMP/XMEMCMP for check-source
Fix for check-defines
XSTRCMP/XMEMCMP != 0
GCC7.3 wants only literal strings for sprintf format
Code review changes
Rework SSH decoding and tests
Fix encoding and tests
COMPARE_TESTVECTOR macro
Single return point in ssh_decode_sequence_multi
Actually use XSTRNCPY rather than just defining it
More code review fixes
Code review tweaks
Ensure it's not possible to read past buffer end
Keep track of size remaining, not end pointer
