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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 "jingleinfo.h"
static void
jabber_google_stun_lookup_cb(GSList *hosts, gpointer data,
const char *error_message)
{
JabberStream *js = (JabberStream *) data;
if (error_message) {
purple_debug_error("jabber", "Google STUN lookup failed: %s\n",
error_message);
g_slist_free(hosts);
js->stun_query = NULL;
return;
}
if (hosts && g_slist_next(hosts)) {
struct sockaddr *addr = g_slist_next(hosts)->data;
char dst[INET6_ADDRSTRLEN];
int port;
if (addr->sa_family == AF_INET6) {
inet_ntop(addr->sa_family, &((struct sockaddr_in6 *) addr)->sin6_addr,
dst, sizeof(dst));
port = ntohs(((struct sockaddr_in6 *) addr)->sin6_port);
} else {
inet_ntop(addr->sa_family, &((struct sockaddr_in *) addr)->sin_addr,
dst, sizeof(dst));
port = ntohs(((struct sockaddr_in *) addr)->sin_port);
}
if (js->stun_ip)
g_free(js->stun_ip);
js->stun_ip = g_strdup(dst);
js->stun_port = port;
purple_debug_info("jabber", "set Google STUN IP/port address: "
"%s:%d\n", dst, port);
/* unmark ongoing query */
js->stun_query = NULL;
}
while (hosts != NULL) {
hosts = g_slist_delete_link(hosts, hosts);
/* Free the address */
g_free(hosts->data);
hosts = g_slist_delete_link(hosts, hosts);
}
}
static void
jabber_google_jingle_info_common(JabberStream *js, const char *from,
JabberIqType type, xmlnode *query)
{
const xmlnode *stun = xmlnode_get_child(query, "stun");
const xmlnode *relay = xmlnode_get_child(query, "relay");
gchar *my_bare_jid;
/*
* Make sure that random people aren't sending us STUN servers. Per
* http://code.google.com/apis/talk/jep_extensions/jingleinfo.html, these
* stanzas are stamped from our bare JID.
*/
if (from) {
my_bare_jid = g_strdup_printf("%s@%s", js->user->node, js->user->domain);
if (!purple_strequal(from, my_bare_jid)) {
purple_debug_warning("jabber", "got google:jingleinfo with invalid from (%s)\n",
from);
g_free(my_bare_jid);
return;
}
g_free(my_bare_jid);
}
if (type == JABBER_IQ_ERROR || type == JABBER_IQ_GET)
return;
purple_debug_info("jabber", "got google:jingleinfo\n");
if (stun) {
xmlnode *server = xmlnode_get_child(stun, "server");
if (server) {
const gchar *host = xmlnode_get_attrib(server, "host");
const gchar *udp = xmlnode_get_attrib(server, "udp");
if (host && udp) {
int port = atoi(udp);
/* if there, would already be an ongoing query,
cancel it */
if (js->stun_query)
purple_dnsquery_destroy(js->stun_query);
js->stun_query = purple_dnsquery_a(host, port,
jabber_google_stun_lookup_cb, js);
}
}
}
if (relay) {
xmlnode *token = xmlnode_get_child(relay, "token");
xmlnode *server = xmlnode_get_child(relay, "server");
if (token) {
gchar *relay_token = xmlnode_get_data(token);
/* we let js own the string returned from xmlnode_get_data */
js->google_relay_token = relay_token;
}
if (server) {
js->google_relay_host =
g_strdup(xmlnode_get_attrib(server, "host"));
}
}
}
static void
jabber_google_jingle_info_cb(JabberStream *js, const char *from,
JabberIqType type, const char *id,
xmlnode *packet, gpointer data)
{
xmlnode *query = xmlnode_get_child_with_namespace(packet, "query",
NS_GOOGLE_JINGLE_INFO);
if (query)
jabber_google_jingle_info_common(js, from, type, query);
else
purple_debug_warning("jabber", "Got invalid google:jingleinfo\n");
}
void
jabber_google_handle_jingle_info(JabberStream *js, const char *from,
JabberIqType type, const char *id,
xmlnode *child)
{
jabber_google_jingle_info_common(js, from, type, child);
}
void
jabber_google_send_jingle_info(JabberStream *js)
{
JabberIq *jingle_info =
jabber_iq_new_query(js, JABBER_IQ_GET, NS_GOOGLE_JINGLE_INFO);
jabber_iq_set_callback(jingle_info, jabber_google_jingle_info_cb,
NULL);
purple_debug_info("jabber", "sending google:jingleinfo query\n");
jabber_iq_send(jingle_info);
}
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