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/*
* Ayttm
*
* Copyright (C) 2003,2009, the Ayttm team
*
* this code is derivative of Sylpheed-claws
* Copyright (C) 1999-2003, Hiroyuki Yamamoto
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "config.h"
#ifdef HAVE_OPENSSL
#include "ssl.h"
#include "ssl_certificate.h"
#include "debug.h"
#include <string.h>
#include <glib.h>
#include "globals.h"
#include "networking.h"
static gboolean ssl_inited = FALSE;
static GMutex **ssl_mutex = NULL;
static void locking_function(int mode, int n, const char *file, int line)
{
if (mode & CRYPTO_LOCK)
g_mutex_lock(ssl_mutex[n]);
else
g_mutex_unlock(ssl_mutex[n]);
}
static unsigned long id_function(void)
{
return (unsigned long)g_thread_self();
}
/* Global system initialization */
void ssl_init(void)
{
int num_locks = 0, i = 0;
static GStaticMutex ssl_init_lock = G_STATIC_MUTEX_INIT;
g_static_mutex_lock(&ssl_init_lock);
if (ssl_inited)
return;
SSL_library_init();
SSL_load_error_strings();
num_locks = CRYPTO_num_locks();
ssl_mutex = g_new0(GMutex *, num_locks);
for (i = 0; i < num_locks; i++)
ssl_mutex[i] = g_mutex_new();
CRYPTO_set_locking_callback(locking_function);
CRYPTO_set_id_callback(id_function);
ssl_inited = TRUE;
g_static_mutex_unlock(&ssl_init_lock);
}
SSL *ssl_get_socket(int sock, const char *host, int port, void *data)
{
SSL_CTX *ssl_ctx = NULL;
SSL_METHOD *meth;
if (!ssl_inited)
ssl_init();
/* Create our context */
meth = SSLv23_client_method();
ssl_ctx = SSL_CTX_new(meth);
/* Set default certificate paths */
SSL_CTX_set_default_verify_paths(ssl_ctx);
#if (OPENSSL_VERSION_NUMBER < 0x0090600fL)
SSL_CTX_set_verify_depth(ssl_ctx, 1);
#endif
return ssl_init_socket_with_method(sock, host, port, ssl_ctx,
SSL_METHOD_SSLv23, data);
}
SSL *ssl_init_socket_with_method(int sock, const char *host, int port,
SSL_CTX *ssl_ctx, SSLMethod method, void *data)
{
X509 *server_cert;
SSL *ssl;
int res = 0;
ssl = SSL_new(ssl_ctx);
if (ssl == NULL) {
eb_debug(DBG_CORE, "Error creating ssl context\n");
return NULL;
}
switch (method) {
case SSL_METHOD_SSLv23:
eb_debug(DBG_CORE, "Setting SSLv23 client method\n");
SSL_set_ssl_method(ssl, SSLv23_client_method());
break;
case SSL_METHOD_TLSv1:
eb_debug(DBG_CORE, "Setting TLSv1 client method\n");
SSL_set_ssl_method(ssl, TLSv1_client_method());
break;
default:
break;
}
SSL_set_fd(ssl, sock);
if ((res = SSL_connect(ssl)) == -1) {
eb_debug(DBG_CORE, ("SSL connect failed (%s)\n"),
ERR_error_string(SSL_get_error(ssl, res), NULL));
res = SSL_get_error(ssl, res);
switch (res) {
case SSL_ERROR_NONE:
printf("SSL_ERROR_NONE\n");
break;
case SSL_ERROR_WANT_READ:
printf("SSL_ERROR_WANT_READ\n");
break;
case SSL_ERROR_WANT_WRITE:
printf("SSL_ERROR_WANT_WRITE\n");
break;
case SSL_ERROR_ZERO_RETURN:
printf("SSL_ERROR_ZERO_RETURN\n");
break;
default:
printf("DEFAULT\n");
break;
}
SSL_free(ssl);
return NULL;
}
/* Get the cipher */
eb_debug(DBG_CORE, "SSL connection using %s\n", SSL_get_cipher(ssl));
/* Get server's certificate (note: beware of dynamic allocation) */
if ((server_cert = SSL_get_peer_certificate(ssl)) == NULL) {
eb_debug(DBG_CORE,
"server_cert is NULL ! this _should_not_ happen !\n");
SSL_free(ssl);
return NULL;
}
if (!ssl_certificate_check(server_cert, host, port, data)) {
X509_free(server_cert);
SSL_free(ssl);
return NULL;
}
X509_free(server_cert);
return ssl;
}
void ssl_done_socket(SSL *ssl)
{
if (ssl)
SSL_free(ssl);
}
int ssl_read(SSL *ssl, char *buf, int len)
{
return SSL_read(ssl, buf, len);
}
int ssl_write(SSL *ssl, const char *buf, int len)
{
return SSL_write(ssl, buf, len);
}
#endif
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