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/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 - 2021 Andy Green <andy@warmcat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "private-lib-core.h"
#include "private-lib-tls-openssl.h"
extern int openssl_websocket_private_data_index,
openssl_SSL_CTX_private_data_index;
#if defined(LWS_WITH_NETWORK)
static char openssl_ex_indexes_acquired;
#endif
void
lws_tls_err_describe_clear(void)
{
char buf[160];
unsigned long l;
do {
l = ERR_get_error();
if (!l)
break;
ERR_error_string_n(
#if defined(LWS_WITH_BORINGSSL)
(uint32_t)
#endif
l, buf, sizeof(buf));
lwsl_info(" openssl error: %s\n", buf);
} while (l);
lwsl_info("\n");
}
#if LWS_MAX_SMP != 1
static pthread_mutex_t *openssl_mutexes = NULL;
static void
lws_openssl_lock_callback(int mode, int type, const char *file, int line)
{
(void)file;
(void)line;
if (mode & CRYPTO_LOCK)
pthread_mutex_lock(&openssl_mutexes[type]);
else
pthread_mutex_unlock(&openssl_mutexes[type]);
}
static unsigned long
lws_openssl_thread_id(void)
{
#ifdef __PTW32_H
return (unsigned long)(intptr_t)(pthread_self()).p;
#else
return (unsigned long)pthread_self();
#endif
}
#endif
int
lws_context_init_ssl_library(struct lws_context *cx,
const struct lws_context_creation_info *info)
{
#ifdef USE_WOLFSSL
#ifdef USE_OLD_CYASSL
lwsl_cx_info(cx, " Compiled with CyaSSL support");
#else
lwsl_cx_info(cx, " Compiled with wolfSSL support");
#endif
#else
#if defined(LWS_WITH_BORINGSSL)
lwsl_cx_info(cx, " Compiled with BoringSSL support");
#else
lwsl_cx_info(cx, " Compiled with OpenSSL support");
#endif
#endif
if (!lws_check_opt(info->options, LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT)) {
lwsl_cx_info(cx, " SSL disabled: no "
"LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT");
return 0;
}
/* basic openssl init */
lwsl_cx_info(cx, "Doing SSL library init");
#if OPENSSL_VERSION_NUMBER < 0x10100000L
SSL_library_init();
OpenSSL_add_all_algorithms();
SSL_load_error_strings();
#else
OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
#endif
#if defined(LWS_WITH_NETWORK)
if (!openssl_ex_indexes_acquired) {
openssl_websocket_private_data_index =
SSL_get_ex_new_index(0, "lws", NULL, NULL, NULL);
openssl_SSL_CTX_private_data_index =
SSL_CTX_get_ex_new_index(0, NULL, NULL, NULL, NULL);
openssl_ex_indexes_acquired = 1;
}
#endif
#if LWS_MAX_SMP != 1
{
int n;
openssl_mutexes = (pthread_mutex_t *)
OPENSSL_malloc((size_t)((unsigned long)CRYPTO_num_locks() *
(unsigned long)sizeof(openssl_mutexes[0])));
for (n = 0; n < CRYPTO_num_locks(); n++)
pthread_mutex_init(&openssl_mutexes[n], NULL);
/*
* These "functions" disappeared in later OpenSSL which is
* already threadsafe.
*/
(void)lws_openssl_thread_id;
(void)lws_openssl_lock_callback;
CRYPTO_set_id_callback(lws_openssl_thread_id);
CRYPTO_set_locking_callback(lws_openssl_lock_callback);
}
#endif
return 0;
}
void
lws_context_deinit_ssl_library(struct lws_context *context)
{
#if LWS_MAX_SMP != 1
int n;
if (!lws_check_opt(context->options,
LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT))
return;
CRYPTO_set_locking_callback(NULL);
if (openssl_mutexes) {
for (n = 0; n < CRYPTO_num_locks(); n++)
pthread_mutex_destroy(&openssl_mutexes[n]);
OPENSSL_free(openssl_mutexes);
openssl_mutexes = NULL;
}
#endif
}
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