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/*
* Copyright 2006-2008 Ondrej Jirman <ondrej.jirman@zonio.net>
*
* This file is part of libxr.
*
* Libxr is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 2 of the License, or (at your option) any
* later version.
*
* Libxr is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libxr. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
#include <openssl/bio.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#ifndef WIN32
#include <signal.h>
#endif
#include "xr-lib.h"
#include "xr-http.h"
int xr_debug_enabled = 0;
void _xr_debug(const char* loc, const char* fmt, ...)
{
va_list ap;
char* msg;
if (fmt == NULL)
return;
va_start(ap, fmt);
msg = g_strdup_vprintf(fmt, ap);
va_end(ap);
g_printerr("%s%s\n", loc ? loc : "", msg);
g_free(msg);
}
static GMutex** _ssl_mutexes = NULL;
static int _ssl_initialized = 0;
static void _ssl_locking_callback(int mode, int type, const char *file, int line)
{
if (mode & CRYPTO_LOCK)
g_mutex_lock(_ssl_mutexes[type]);
else
g_mutex_unlock(_ssl_mutexes[type]);
}
static unsigned long _ssl_thread_id_callback()
{
unsigned long ret;
ret = (unsigned long)g_thread_self();
return ret;
}
G_LOCK_DEFINE_STATIC(init);
void xr_init()
{
int i;
if (!g_thread_supported())
g_error("xr_init(): You must call g_thread_init() to allow libxr to work correctly.");
G_LOCK(init);
if (_ssl_initialized)
{
G_UNLOCK(init);
return;
}
xr_http_init();
#ifndef WIN32
signal(SIGPIPE, SIG_IGN);
#endif
SSL_library_init();
SSL_load_error_strings();
OpenSSL_add_all_algorithms();
/* add zlib SSL compresssion */
COMP_METHOD *cm = COMP_zlib();
if (cm->type != NID_undef)
SSL_COMP_add_compression_method(1, cm); /* 1 is DEFALTE according to the http://www.ietf.org/rfc/rfc3749.txt */
_ssl_mutexes = g_new(GMutex*, CRYPTO_num_locks());
for (i=0; i<CRYPTO_num_locks(); i++)
_ssl_mutexes[i] = g_mutex_new();
CRYPTO_set_id_callback(_ssl_thread_id_callback);
CRYPTO_set_locking_callback(_ssl_locking_callback);
_ssl_initialized = 1;
G_UNLOCK(init);
}
void xr_fini()
{
if (!_ssl_initialized)
return;
#ifndef WIN32
signal(SIGPIPE, SIG_DFL);
#endif
if (_ssl_mutexes)
{
CRYPTO_set_id_callback(NULL);
CRYPTO_set_locking_callback(NULL);
int i;
for (i=0; i<CRYPTO_num_locks(); i++)
g_mutex_free(_ssl_mutexes[i]);
g_free(_ssl_mutexes);
_ssl_mutexes = NULL;
}
_ssl_initialized = 0;
}
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