| 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) Daniel Stenberg, <[email protected]>, et al.
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| 9 | * Copyright (C) Hoi-Ho Chan, <[email protected]>
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| 10 | *
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| 11 | * This software is licensed as described in the file COPYING, which
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| 12 | * you should have received as part of this distribution. The terms
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| 13 | * are also available at https://curl.se/docs/copyright.html.
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| 14 | *
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| 15 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 16 | * copies of the Software, and permit persons to whom the Software is
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| 17 | * furnished to do so, under the terms of the COPYING file.
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| 18 | *
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| 19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 20 | * KIND, either express or implied.
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| 21 | *
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| 22 | * SPDX-License-Identifier: curl
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| 23 | *
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| 24 | ***************************************************************************/
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| 25 | #include "curl_setup.h"
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| 26 |
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| 27 | #if defined(USE_MBEDTLS) && \
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| 28 | ((defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)) || \
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| 29 | defined(USE_THREADS_WIN32))
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| 30 |
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| 31 | #if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
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| 32 | # include <pthread.h>
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| 33 | # define MBEDTLS_MUTEX_T pthread_mutex_t
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| 34 | #elif defined(USE_THREADS_WIN32)
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| 35 | # define MBEDTLS_MUTEX_T HANDLE
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| 36 | #endif
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| 37 |
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| 38 | #include "mbedtls_threadlock.h"
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| 39 | #include "curl_printf.h"
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| 40 | #include "curl_memory.h"
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| 41 | /* The last #include file should be: */
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| 42 | #include "memdebug.h"
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| 43 |
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| 44 | /* number of thread locks */
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| 45 | #define NUMT 2
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| 46 |
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| 47 | /* This array will store all of the mutexes available to Mbedtls. */
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| 48 | static MBEDTLS_MUTEX_T *mutex_buf = NULL;
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| 49 |
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| 50 | int Curl_mbedtlsthreadlock_thread_setup(void)
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| 51 | {
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| 52 | int i;
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| 53 |
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| 54 | mutex_buf = calloc(NUMT * sizeof(MBEDTLS_MUTEX_T), 1);
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| 55 | if(!mutex_buf)
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| 56 | return 0; /* error, no number of threads defined */
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| 57 |
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| 58 | for(i = 0; i < NUMT; i++) {
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| 59 | #if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
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| 60 | if(pthread_mutex_init(&mutex_buf[i], NULL))
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| 61 | return 0; /* pthread_mutex_init failed */
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| 62 | #elif defined(USE_THREADS_WIN32)
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| 63 | mutex_buf[i] = CreateMutex(0, FALSE, 0);
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| 64 | if(mutex_buf[i] == 0)
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| 65 | return 0; /* CreateMutex failed */
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| 66 | #endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
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| 67 | }
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| 68 |
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| 69 | return 1; /* OK */
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| 70 | }
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| 71 |
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| 72 | int Curl_mbedtlsthreadlock_thread_cleanup(void)
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| 73 | {
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| 74 | int i;
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| 75 |
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| 76 | if(!mutex_buf)
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| 77 | return 0; /* error, no threads locks defined */
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| 78 |
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| 79 | for(i = 0; i < NUMT; i++) {
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| 80 | #if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
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| 81 | if(pthread_mutex_destroy(&mutex_buf[i]))
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| 82 | return 0; /* pthread_mutex_destroy failed */
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| 83 | #elif defined(USE_THREADS_WIN32)
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| 84 | if(!CloseHandle(mutex_buf[i]))
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| 85 | return 0; /* CloseHandle failed */
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| 86 | #endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
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| 87 | }
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| 88 | free(mutex_buf);
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| 89 | mutex_buf = NULL;
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| 90 |
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| 91 | return 1; /* OK */
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| 92 | }
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| 93 |
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| 94 | int Curl_mbedtlsthreadlock_lock_function(int n)
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| 95 | {
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| 96 | if(n < NUMT) {
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| 97 | #if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
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| 98 | if(pthread_mutex_lock(&mutex_buf[n])) {
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| 99 | DEBUGF(fprintf(stderr,
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| 100 | "Error: mbedtlsthreadlock_lock_function failed\n"));
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| 101 | return 0; /* pthread_mutex_lock failed */
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| 102 | }
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| 103 | #elif defined(USE_THREADS_WIN32)
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| 104 | if(WaitForSingleObject(mutex_buf[n], INFINITE) == WAIT_FAILED) {
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| 105 | DEBUGF(fprintf(stderr,
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| 106 | "Error: mbedtlsthreadlock_lock_function failed\n"));
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| 107 | return 0; /* pthread_mutex_lock failed */
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| 108 | }
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| 109 | #endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
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| 110 | }
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| 111 | return 1; /* OK */
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| 112 | }
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| 113 |
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| 114 | int Curl_mbedtlsthreadlock_unlock_function(int n)
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| 115 | {
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| 116 | if(n < NUMT) {
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| 117 | #if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
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| 118 | if(pthread_mutex_unlock(&mutex_buf[n])) {
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| 119 | DEBUGF(fprintf(stderr,
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| 120 | "Error: mbedtlsthreadlock_unlock_function failed\n"));
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| 121 | return 0; /* pthread_mutex_unlock failed */
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| 122 | }
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| 123 | #elif defined(USE_THREADS_WIN32)
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| 124 | if(!ReleaseMutex(mutex_buf[n])) {
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| 125 | DEBUGF(fprintf(stderr,
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| 126 | "Error: mbedtlsthreadlock_unlock_function failed\n"));
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| 127 | return 0; /* pthread_mutex_lock failed */
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| 128 | }
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| 129 | #endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
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| 130 | }
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| 131 | return 1; /* OK */
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| 132 | }
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| 133 |
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| 134 | #endif /* USE_MBEDTLS */
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