curl/lib/vtls/mbedtls_threadlock.c
2025-11-30 11:01:50 +01:00

117 lines
3.8 KiB
C

/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) Hoi-Ho Chan, <hoiho.chan@gmail.com>
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "../curl_setup.h"
#if defined(USE_MBEDTLS) && \
((defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)) || defined(_WIN32))
#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
# include <pthread.h>
# define MBEDTLS_MUTEX_T pthread_mutex_t
#elif defined(_WIN32)
# define MBEDTLS_MUTEX_T HANDLE
#endif
#include "mbedtls_threadlock.h"
/* This array stores the mutexes available to mbedTLS */
static MBEDTLS_MUTEX_T mutex_buf[2];
int Curl_mbedtlsthreadlock_thread_setup(void)
{
size_t i;
for(i = 0; i < CURL_ARRAYSIZE(mutex_buf); i++) {
#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
if(pthread_mutex_init(&mutex_buf[i], NULL))
return 0; /* pthread_mutex_init failed */
#elif defined(_WIN32)
mutex_buf[i] = CreateMutex(0, FALSE, 0);
if(mutex_buf[i] == 0)
return 0; /* CreateMutex failed */
#endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
}
return 1; /* OK */
}
int Curl_mbedtlsthreadlock_thread_cleanup(void)
{
size_t i;
for(i = 0; i < CURL_ARRAYSIZE(mutex_buf); i++) {
#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
if(pthread_mutex_destroy(&mutex_buf[i]))
return 0; /* pthread_mutex_destroy failed */
#elif defined(_WIN32)
if(!CloseHandle(mutex_buf[i]))
return 0; /* CloseHandle failed */
#endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
}
return 1; /* OK */
}
int Curl_mbedtlsthreadlock_lock_function(size_t n)
{
if(n < CURL_ARRAYSIZE(mutex_buf)) {
#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
if(pthread_mutex_lock(&mutex_buf[n])) {
DEBUGF(curl_mfprintf(stderr, "Error: "
"mbedtlsthreadlock_lock_function failed\n"));
return 0; /* pthread_mutex_lock failed */
}
#elif defined(_WIN32)
if(WaitForSingleObject(mutex_buf[n], INFINITE) == WAIT_FAILED) {
DEBUGF(curl_mfprintf(stderr, "Error: "
"mbedtlsthreadlock_lock_function failed\n"));
return 0; /* pthread_mutex_lock failed */
}
#endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
}
return 1; /* OK */
}
int Curl_mbedtlsthreadlock_unlock_function(size_t n)
{
if(n < CURL_ARRAYSIZE(mutex_buf)) {
#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
if(pthread_mutex_unlock(&mutex_buf[n])) {
DEBUGF(curl_mfprintf(stderr, "Error: "
"mbedtlsthreadlock_unlock_function failed\n"));
return 0; /* pthread_mutex_unlock failed */
}
#elif defined(_WIN32)
if(!ReleaseMutex(mutex_buf[n])) {
DEBUGF(curl_mfprintf(stderr, "Error: "
"mbedtlsthreadlock_unlock_function failed\n"));
return 0; /* pthread_mutex_lock failed */
}
#endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
}
return 1; /* OK */
}
#endif /* USE_MBEDTLS */