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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2009, Digium, Inc.
*
* Russell Bryant <russell@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*!
* \file
* \brief Common OpenSSL support code
*
* \author Russell Bryant <russell@digium.com>
*/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#ifdef HAVE_OPENSSL
#include <openssl/ssl.h>
#include <openssl/err.h>
#endif
#include "asterisk/_private.h" /* ast_ssl_init() */
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#ifdef HAVE_OPENSSL
static ast_mutex_t *ssl_locks;
static int ssl_num_locks;
static unsigned long ssl_threadid(void)
{
return pthread_self();
}
static void ssl_lock(int mode, int n, const char *file, int line)
{
if (n < 0 || n >= ssl_num_locks) {
ast_log(LOG_ERROR, "OpenSSL is full of LIES!!! - "
"ssl_num_locks '%d' - n '%d'\n",
ssl_num_locks, n);
return;
}
if (mode & CRYPTO_LOCK) {
ast_mutex_lock(&ssl_locks[n]);
} else {
ast_mutex_unlock(&ssl_locks[n]);
}
}
#endif /* HAVE_OPENSSL */
/*!
* \internal
* \brief Common OpenSSL initialization for all of Asterisk.
*/
int ast_ssl_init(void)
{
#ifdef HAVE_OPENSSL
unsigned int i;
SSL_library_init();
SSL_load_error_strings();
ERR_load_crypto_strings();
ERR_load_BIO_strings();
OpenSSL_add_all_algorithms();
/* Make OpenSSL thread-safe. */
CRYPTO_set_id_callback(ssl_threadid);
ssl_num_locks = CRYPTO_num_locks();
if (!(ssl_locks = ast_calloc(ssl_num_locks, sizeof(ssl_locks[0])))) {
return -1;
}
for (i = 0; i < ssl_num_locks; i++) {
ast_mutex_init(&ssl_locks[i]);
}
CRYPTO_set_locking_callback(ssl_lock);
#endif /* HAVE_OPENSSL */
return 0;
}
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