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-rw-r--r--lib/vtls/mbedtls_threadlock.c144
1 files changed, 144 insertions, 0 deletions
diff --git a/lib/vtls/mbedtls_threadlock.c b/lib/vtls/mbedtls_threadlock.c
new file mode 100644
index 000000000..4d672f106
--- /dev/null
+++ b/lib/vtls/mbedtls_threadlock.c
@@ -0,0 +1,144 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2013 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2010, 2011, 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.haxx.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.
+ *
+ ***************************************************************************/
+#include "curl_setup.h"
+
+#if defined(USE_MBEDTLS) && \
+ ((defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)) || \
+ (defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H)))
+
+#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
+# include <pthread.h>
+# define MBEDTLS_MUTEX_T pthread_mutex_t
+#elif defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H)
+# include <process.h>
+# define MBEDTLS_MUTEX_T HANDLE
+#endif
+
+#include "mbedtls_threadlock.h"
+#include "curl_printf.h"
+#include "curl_memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
+
+/* number of thread locks */
+#define NUMT 2
+
+/* This array will store all of the mutexes available to Mbedtls. */
+static MBEDTLS_MUTEX_T *mutex_buf = NULL;
+
+int Curl_mbedtlsthreadlock_thread_setup(void)
+{
+ int i;
+
+ mutex_buf = calloc(NUMT * sizeof(MBEDTLS_MUTEX_T), 1);
+ if(!mutex_buf)
+ return 0; /* error, no number of threads defined */
+
+ for(i = 0; i < NUMT; i++) {
+ int ret;
+#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
+ ret = pthread_mutex_init(&mutex_buf[i], NULL);
+ if(ret)
+ return 0; /* pthread_mutex_init failed */
+#elif defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H)
+ 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)
+{
+ int i;
+
+ if(!mutex_buf)
+ return 0; /* error, no threads locks defined */
+
+ for(i = 0; i < NUMT; i++) {
+ int ret;
+#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
+ ret = pthread_mutex_destroy(&mutex_buf[i]);
+ if(ret)
+ return 0; /* pthread_mutex_destroy failed */
+#elif defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H)
+ ret = CloseHandle(mutex_buf[i]);
+ if(!ret)
+ return 0; /* CloseHandle failed */
+#endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
+ }
+ free(mutex_buf);
+ mutex_buf = NULL;
+
+ return 1; /* OK */
+}
+
+int Curl_mbedtlsthreadlock_lock_function(int n)
+{
+ if(n < NUMT) {
+ int ret;
+#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
+ ret = pthread_mutex_lock(&mutex_buf[n]);
+ if(ret) {
+ DEBUGF(fprintf(stderr,
+ "Error: mbedtlsthreadlock_lock_function failed\n"));
+ return 0; /* pthread_mutex_lock failed */
+ }
+#elif defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H)
+ ret = (WaitForSingleObject(mutex_buf[n], INFINITE) == WAIT_FAILED?1:0);
+ if(ret) {
+ DEBUGF(fprintf(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(int n)
+{
+ if(n < NUMT) {
+ int ret;
+#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
+ ret = pthread_mutex_unlock(&mutex_buf[n]);
+ if(ret) {
+ DEBUGF(fprintf(stderr,
+ "Error: mbedtlsthreadlock_unlock_function failed\n"));
+ return 0; /* pthread_mutex_unlock failed */
+ }
+#elif defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H)
+ ret = ReleaseMutex(mutex_buf[n]);
+ if(!ret) {
+ DEBUGF(fprintf(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 */