Some Linux distributions are shipping the BSD-style hashing functions
(e.g. SHA256Update) in libbsd and/or libmd. Detect this situation to
avoid header/replacement clashes later. ok dtucker@
FreeBSD has login_getpwclass() that does some special magic for
UID=0. Prefer this to login_getclass() as its easier to emulate
the former with the latter.
Based on FreeBSD PR 37416 via Ed Maste; ok dtucker@
The sntrup761 code sourced from supercop uses variable length
arrays. Although widely supported, they are not part of the ANSI
C89 spec so if the compiler does not support VLAs, disable the
sntrup761x25519-sha512@openssh.com KEX method by replacing the kex
functions with no-op ones similar to what we do in kexecdh.c.
This should allow OpenSSH to build with a plain C89 compiler again.
Spotted by tim@, ok djm@.
It was only set by the recently removed AC_HEADER_TIME macro, replace
with simple inclusions of both sys/time.h and time.h. Should prevent
mis-detection of struct timespec.
We needed a mkdtemp() that accepted template paths that did not
end in XXXXXX a long time ago for KRB4, but that code is long
deprecated. We no longer need to replace mkdtemp() for strictly
following POSIX. ok dtucker@
when testing, make sure to include the relevant header files that
declare the types of the functions used by the test:
- stdio.h for printf();
- stdlib.h for exit();
- string.h for strcmp();
- unistd.h for unlink(), _exit(), fork(), getppid(), sleep().
The `aclocal' step is skipped during `autoreconf' because aclocal.m4 is
present.
Move the current aclocal.m4 which contains local macros into the m4/
folder. With this change the aclocal.m4 will be re-created during
changes to the m4/ macro.
This is needed so the `aclocal' can fetch m4 macros from the system if
they are references in the configure script. This is a prerequisite to
use PKG_CHECK_MODULES.
Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
configure.ac is not detecting -Wextra in compilers that implement the
option. The problem is that -Wextra implies -Wunused-parameter, and the
C excerpt used by aclocal.m4 does not use argv. Patch from pedro at
ambientworks.net, ok djm@
This is a frankenstein monster of AMD64 instructions/calling conventions
but with a 4GB address space. Allegedly deprecated but people still run
into it causing weird sandbox failures, e.g. bz#3085
When the test's child signals its parent and it exits the result of
getppid changes. On Ubuntu 20.04 this results in the ppid being that
of the GDM session, causing it to exit. Analysis and testing from pedro
at ambientworks.net
If we don't have LLONG_{MIN,MAX} but do have LONG_LONG_{MIN,MAX}
then use those instead. We do calculate these values in configure,
but it turns out that at least one compiler (old HP ANSI C) can't
parse "-9223372036854775808LL" without mangling it. (It can parse
"-9223372036854775807LL" which is presumably why its limits.h defines
LONG_LONG_MIN as the latter minus 1.)
Fixes rekey test when compiled with the aforementioned compiler.
On some platforms (at least older HP-UXes such as 11.11, possibly others)
setting SA_RESTART on signal handers will cause it to not interrupt
select(), at least for calls that do not specify a timeout. Try to
detect this and if found, don't use SA_RESTART.
POSIX says "If SA_RESTART has been set for the interrupting signal, it
is implementation-dependent whether select() restarts or returns with
[EINTR]" so this behaviour is within spec.
... unless we are actually going to use it. Fixes build on HP-UX
without the potential impact to other platforms of a header change
shortly before release.
If the system (or one of the dependencies) implements memmem but does
not define the header, we would not declare it either resulting in
compiler warnings. Check for declaration explicitly. bz#3102.
