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/*
This file is part of GNU libmicrohttpd
Copyright (C) 2022 Evgeny Grin (Karlson2k)
GNU libmicrohttpd is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with GNU libmicrohttpd.
If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file testzzuf/mhd_debug_funcs.c
* @brief Implementations of MHD private debug functions
* @author Karlson2k (Evgeny Grin)
*/
#include "mhd_debug_funcs.h"
#include "internal.h"
#include "mhd_sockets.h"
/**
* Checks whether MHD can use accept() syscall and
* avoid accept4() syscall.
* @return non-zero if accept() is possible,
* zero if accept4() is always used by MHD
*/
int
MHD_is_avoid_accept4_possible_ (void)
{
#if ! defined(USE_ACCEPT4)
return ! 0;
#else /* ! USE_ACCEPT4 */
return (MHD_YES == MHD_is_feature_supported (MHD_FEATURE_DEBUG_BUILD)) ?
! 0 : 0;
#endif /* ! USE_ACCEPT4 */
}
/**
* Switch MHD daemon to use accept() syscalls for new connections.
* @param daemon the daemon to operate
*/
void
MHD_avoid_accept4_ (struct MHD_Daemon *daemon)
{
(void) daemon; /* Mute compiler warning */
#ifdef USE_ACCEPT4
#ifdef _DEBUG
daemon->avoid_accept4 = true;
#else /* ! _DEBUG */
abort ();
#endif /* ! _DEBUG */
#endif /* USE_ACCEPT4 */
}
#ifdef MHD_ASAN_ACTIVE
#define MHD_ASAN_ENABLED_ 1
#else /* ! MHD_ASAN_ACTIVE */
#ifdef __SANITIZE_ADDRESS__
#define MHD_ASAN_ENABLED_ 1
#else /* ! __SANITIZE_ADDRESS__ */
#if defined(__has_feature)
#if __has_feature(address_sanitizer)
#define MHD_ASAN_ENABLED_ 1
#endif /* __has_feature(address_sanitizer) */
#endif /* __has_feature */
#endif /* ! __SANITIZE_ADDRESS__ */
#endif /* ! MHD_ASAN_ACTIVE */
/**
* Checks whether any know sanitizer is enabled for this build.
* zzuf does not work together with sanitizers as both are intercepting
* standard library calls.
* @return non-zero if any sanitizer is enabled,
* zero otherwise
*/
int
MHD_are_sanitizers_enabled_ (void)
{
int ret = 0;
#ifdef MHD_ASAN_ENABLED_
++ret;
#endif /* ! MHD_ASAN_ENABLED_ */
#if defined(__has_feature)
#if __has_feature(thread_sanitizer)
++ret;
#endif
#if __has_feature(memory_sanitizer)
++ret;
#endif
#if __has_feature(dataflow_sanitizer)
++ret;
#endif
#else /* ! defined(__has_feature) */
#ifdef __SANITIZE_THREAD__
++ret;
#endif
#endif /* ! defined(__has_feature) */
return ret;
}
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