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/*
* relay-network.c - network functions for relay plugin
*
* Copyright (C) 2003-2016 Sébastien Helleu <flashcode@flashtux.org>
*
* This file is part of WeeChat, the extensible chat client.
*
* WeeChat 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 3 of the License, or
* (at your option) any later version.
*
* WeeChat 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 WeeChat. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#ifdef HAVE_GNUTLS
#include <gnutls/gnutls.h>
#endif /* HAVE_GNUTLS */
#include "../weechat-plugin.h"
#include "relay.h"
#include "relay-network.h"
#include "relay-config.h"
int relay_network_init_ok = 0;
int relay_network_init_ssl_cert_key_ok = 0;
#ifdef HAVE_GNUTLS
gnutls_certificate_credentials_t relay_gnutls_x509_cred;
gnutls_priority_t *relay_gnutls_priority_cache = NULL;
gnutls_dh_params_t *relay_gnutls_dh_params = NULL;
#endif /* HAVE_GNUTLS */
/*
* Sets SSL certificate/key file.
*
* If verbose == 1, a message is displayed if successful, otherwise a warning
* (if no cert/key found in file).
*/
void
relay_network_set_ssl_cert_key (int verbose)
{
#ifdef HAVE_GNUTLS
char *certkey_path, *certkey_path2;
int ret;
gnutls_certificate_free_credentials (relay_gnutls_x509_cred);
gnutls_certificate_allocate_credentials (&relay_gnutls_x509_cred);
relay_network_init_ssl_cert_key_ok = 0;
certkey_path = weechat_string_expand_home (weechat_config_string (relay_config_network_ssl_cert_key));
if (certkey_path)
{
certkey_path2 = weechat_string_replace (certkey_path, "%h",
weechat_info_get ("weechat_dir",
NULL));
if (certkey_path2)
{
ret = gnutls_certificate_set_x509_key_file (relay_gnutls_x509_cred,
certkey_path2,
certkey_path2,
GNUTLS_X509_FMT_PEM);
if (ret >= 0)
{
relay_network_init_ssl_cert_key_ok = 1;
if (verbose)
{
weechat_printf (NULL,
_("%s: SSL certificate and key have been "
"set"),
RELAY_PLUGIN_NAME);
}
}
else
{
if (verbose)
{
weechat_printf (NULL,
_("%s%s: warning: no SSL certificate/key "
"found (option relay.network.ssl_cert_key)"),
weechat_prefix ("error"), RELAY_PLUGIN_NAME);
}
}
free (certkey_path2);
}
free (certkey_path);
}
#else
/* make C compiler happy */
(void) verbose;
#endif /* HAVE_GNUTLS */
}
/*
* Sets gnutls priority cache.
*/
void
relay_network_set_priority ()
{
#ifdef HAVE_GNUTLS
if (gnutls_priority_init (relay_gnutls_priority_cache,
weechat_config_string (
relay_config_network_ssl_priorities),
NULL) != GNUTLS_E_SUCCESS)
{
weechat_printf (NULL,
_("%s%s: unable to initialize priority for SSL"),
weechat_prefix ("error"), RELAY_PLUGIN_NAME);
free (relay_gnutls_priority_cache);
relay_gnutls_priority_cache = NULL;
}
#endif /* HAVE_GNUTLS */
}
/*
* Initializes network for relay.
*/
void
relay_network_init ()
{
#ifdef HAVE_GNUTLS
/* credentials */
gnutls_certificate_allocate_credentials (&relay_gnutls_x509_cred);
relay_network_set_ssl_cert_key (0);
/* priority */
relay_gnutls_priority_cache = malloc (sizeof (*relay_gnutls_priority_cache));
if (relay_gnutls_priority_cache)
relay_network_set_priority ();
#endif /* HAVE_GNUTLS */
relay_network_init_ok = 1;
}
/*
* Ends network for relay.
*/
void
relay_network_end ()
{
if (relay_network_init_ok)
{
#ifdef HAVE_GNUTLS
if (relay_gnutls_priority_cache)
{
gnutls_priority_deinit (*relay_gnutls_priority_cache);
free (relay_gnutls_priority_cache);
relay_gnutls_priority_cache = NULL;
}
if (relay_gnutls_dh_params)
{
gnutls_dh_params_deinit (*relay_gnutls_dh_params);
free (relay_gnutls_dh_params);
relay_gnutls_dh_params = NULL;
}
gnutls_certificate_free_credentials (relay_gnutls_x509_cred);
#endif /* HAVE_GNUTLS */
relay_network_init_ok = 0;
}
}
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