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/**
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include "internal.h"
#include "debug.h"
#include "relay.h"
typedef struct {
GoogleSession *session;
JabberGoogleRelayCallback *cb;
} JabberGoogleRelayCallbackData;
static void
jabber_google_relay_parse_response(const gchar *response, gchar **ip,
guint *udp, guint *tcp, guint *ssltcp, gchar **username, gchar **password)
{
gchar **lines = g_strsplit(response, "\n", -1);
int i = 0;
for (; lines[i] ; i++) {
gchar *line = lines[i];
gchar **parts = g_strsplit(line, "=", 2);
if (parts[0] && parts[1]) {
if (purple_strequal(parts[0], "relay.ip")) {
*ip = g_strdup(parts[1]);
} else if (purple_strequal(parts[0], "relay.udp_port")) {
*udp = atoi(parts[1]);
} else if (purple_strequal(parts[0], "relay.tcp_port")) {
*tcp = atoi(parts[1]);
} else if (purple_strequal(parts[0], "relay.ssltcp_port")) {
*ssltcp = atoi(parts[1]);
} else if (purple_strequal(parts[0], "username")) {
*username = g_strdup(parts[1]);
} else if (purple_strequal(parts[0], "password")) {
*password = g_strdup(parts[1]);
}
}
g_strfreev(parts);
}
g_strfreev(lines);
}
static void
jabber_google_relay_remove_url_data(JabberStream *js,
PurpleUtilFetchUrlData *url_data)
{
GList *iter = js->google_relay_requests;
while (iter) {
if (iter->data == url_data) {
js->google_relay_requests =
g_list_delete_link(js->google_relay_requests, iter);
break;
}
}
}
static void
jabber_google_relay_fetch_cb(PurpleUtilFetchUrlData *url_data,
gpointer user_data, const gchar *url_text, gsize len,
const gchar *error_message)
{
JabberGoogleRelayCallbackData *data =
(JabberGoogleRelayCallbackData *) user_data;
GoogleSession *session = data->session;
JabberStream *js = session->js;
JabberGoogleRelayCallback *cb = data->cb;
gchar *relay_ip = NULL;
guint relay_udp = 0;
guint relay_tcp = 0;
guint relay_ssltcp = 0;
gchar *relay_username = NULL;
gchar *relay_password = NULL;
g_free(data);
if (url_data) {
jabber_google_relay_remove_url_data(js, url_data);
}
purple_debug_info("jabber", "got response on HTTP request to relay server\n");
if (url_text && len > 0) {
purple_debug_info("jabber", "got Google relay request response:\n%s\n",
url_text);
jabber_google_relay_parse_response(url_text, &relay_ip, &relay_udp,
&relay_tcp, &relay_ssltcp, &relay_username, &relay_password);
}
if (cb)
cb(session, relay_ip, relay_udp, relay_tcp, relay_ssltcp,
relay_username, relay_password);
g_free(relay_ip);
g_free(relay_username);
g_free(relay_password);
}
void
jabber_google_do_relay_request(JabberStream *js, GoogleSession *session,
JabberGoogleRelayCallback cb)
{
PurpleUtilFetchUrlData *url_data = NULL;
gchar *url = g_strdup_printf("http://%s", js->google_relay_host);
/* yes, the relay token is included twice as different request headers,
this is apparently needed to make Google's relay servers work... */
gchar *request =
g_strdup_printf("GET /create_session HTTP/1.0\r\n"
"Host: %s\r\n"
"X-Talk-Google-Relay-Auth: %s\r\n"
"X-Google-Relay-Auth: %s\r\n\r\n",
js->google_relay_host, js->google_relay_token, js->google_relay_token);
JabberGoogleRelayCallbackData *data = g_new0(JabberGoogleRelayCallbackData, 1);
data->session = session;
data->cb = cb;
purple_debug_info("jabber",
"sending Google relay request %s to %s\n", request, url);
url_data =
purple_util_fetch_url_request(url, FALSE, NULL, FALSE, request, FALSE,
jabber_google_relay_fetch_cb, data);
if (url_data) {
js->google_relay_requests =
g_list_prepend(js->google_relay_requests, url_data);
} else {
purple_debug_error("jabber", "unable to create Google relay request\n");
jabber_google_relay_fetch_cb(NULL, data, NULL, 0, NULL);
}
g_free(url);
g_free(request);
}
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