diff options
Diffstat (limited to 'libpurple/protocols/jabber/google/jingleinfo.c')
| -rw-r--r-- | libpurple/protocols/jabber/google/jingleinfo.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/libpurple/protocols/jabber/google/jingleinfo.c b/libpurple/protocols/jabber/google/jingleinfo.c new file mode 100644 index 0000000000..62f3d6c1d9 --- /dev/null +++ b/libpurple/protocols/jabber/google/jingleinfo.c @@ -0,0 +1,158 @@ +/** + * 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"); + 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); + } + } + } + /* should perhaps handle relays later on, or maybe wait until + Google supports a common standard... */ +} + +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); +} |