/*
* action-handlers.c
*
* Copyrigth (C) 2010 Nicolas Cornu <nicolas.cornu@ensi-bourges.fr>
*
* 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 <glib.h>
#include <mcabber/logprint.h>
#include <mcabber/xmpp_helper.h>
#include <mcabber/events.h>
#include <mcabber/hbuf.h>
#include <mcabber/utils.h>
#include <mcabber/screen.h>
#include <jingle/jingle.h>
#include <jingle/check.h>
#include <jingle/sessions.h>
#include <jingle/register.h>
#include <jingle/send.h>
#include <jingle/action-handlers.h>
extern LmMessageHandler* jingle_ack_iq_handler;
void handle_session_initiate(JingleNode *jn)
{
GError *err = NULL;
gboolean valid_disposition = FALSE;
JingleContent *cn;
GString *sbuf;
GSList *child = NULL;
LmMessage *r;
gchar *disp;
JingleSession *sess;
const gchar *xmlns;
JingleAppFuncs *appfuncs;
JingleTransportFuncs *transfuncs;
gconstpointer description, transport;
// Make sure the request come from an user in our roster
disp = jidtodisp(lm_message_get_from(jn->message));
if (!roster_find(disp, jidsearch, 0)) {
// We say that we doesn't support jingle.
jingle_send_iq_error(jn->message, "cancel", "service-unavailable", NULL);
g_free(disp);
return;
}
if (!check_contents(jn, &err)) {
scr_log_print(LPRINT_DEBUG, "jingle: One of the content element was invalid (%s)",
err->message);
jingle_send_iq_error(jn->message, "cancel", "bad-request", NULL);
g_free(disp);
return;
}
// a session-initiate message must contains at least one <content> element
if (g_slist_length(jn->content) < 1) {
jingle_send_iq_error(jn->message, "cancel", "bad-request", NULL);
g_free(disp);
return;
}
/* When sending a session-initiate at least one <content/> element MUST have
* a disposition of "session"); if this rule is violated, the responder MUST
* return a <bad-request/> error to the initiator.
*/
for (child = jn->content; child && !valid_disposition; child = child->next) {
cn = (JingleContent*)(child->data);
if (g_strcmp0(cn->disposition, "session") == 0 || cn->disposition == NULL)
valid_disposition = TRUE;
}
if (!valid_disposition) {
jingle_send_iq_error(jn->message, "cancel", "bad-request", NULL);
g_free(disp);
return;
}
// if a session with the same sid already exists
if (session_find(jn) != NULL) {
jingle_send_iq_error(jn->message, "cancel", "unexpected-request", "out-of-order");
g_free(disp);
return;
}
jingle_ack_iq(jn->message);
// We create a session
sess = session_new_from_jinglenode(jn);
for (child = jn->content; child; child = child->next) {
cn = (JingleContent *)(child->data);
xmlns = lm_message_node_get_attribute(cn->description, "xmlns");
appfuncs = jingle_get_appfuncs(xmlns);
if (appfuncs == NULL) continue;
xmlns = lm_message_node_get_attribute(cn->transport, "xmlns");
transfuncs = jingle_get_transportfuncs(xmlns);
if (transfuncs == NULL) continue;
description = appfuncs->check(cn, &err);
if (description == NULL || err != NULL) continue;
transport = transfuncs->check(cn, &err);
if (transport == NULL || err != NULL) continue;
session_add_content_from_jinglecontent(sess, cn,
JINGLE_SESSION_STATE_PENDING);
}
if(g_slist_length(sess->content) == 0) {
jingle_send_session_terminate(sess, "unsupported-applications");
session_delete(sess);
return;
}
// Wait that user accept the jingle
sbuf = g_string_new("");
g_string_printf(sbuf, "Received an invitation for a jingle session from <%s>",
lm_message_get_from(jn->message));
scr_WriteIncomingMessage(disp, sbuf->str, 0, HBB_PREFIX_INFO, 0);
scr_LogPrint(LPRINT_LOGNORM, "%s", sbuf->str);
{
const char *id;
char *desc = g_strdup_printf("<%s> invites you to do a jingle session",
lm_message_get_from(jn->message));
id = evs_new(desc, NULL, 0, evscallback_jingle, sess, NULL);
g_free(desc);
if (id)
g_string_printf(sbuf, "Please use /event %s accept|reject", id);
else
g_string_printf(sbuf, "Unable to create a new event!");
scr_WriteIncomingMessage(disp, sbuf->str, 0, HBB_PREFIX_INFO, 0);
scr_LogPrint(LPRINT_LOGNORM, "%s", sbuf->str);
}
g_free(disp);
}
void handle_session_info(JingleNode *jn)
{
JingleSession *sess;
SessionContent *sc;
GSList *el;
if ((sess = session_find(jn)) == NULL) {
jingle_send_iq_error(jn->message, "cancel", "item-not-found", "unknown-session");
return;
}
/* "If either party receives an empty session-info message
* for an active session, it MUST send an empty IQ result;
* this usage functions as a "ping" to determine session
* vitality via the XMPP signalling channel." */
if (jn->node->children == NULL) {
jingle_ack_iq(jn->message);
return;
}
/* We don't know the app to which the message is addressed.
* Only the app module itself may know, based on the element
* name and its xmlns, so we need to try every app module. */
for (el = sess->content; el; el = el->next) {
sc = (SessionContent*)el->data;
if (sc->appfuncs->handle == NULL)
continue;
if (sc->appfuncs->handle(JINGLE_SESSION_INFO, sc->description,
jn->node->children)) {
jingle_ack_iq(jn->message);
return;
}
}
/* "If the party that receives an informational message
* does not understand the payload, it MUST return a
* <feature-not-implemented/> error with a Jingle-specific
* error condition of <unsupported-info/>." */
jingle_send_iq_error(jn->message, "modify", "feature-not-implemented",
"unsupported-info");
}
void handle_session_accept(JingleNode *jn)
{
JingleSession *sess;
JingleContent *jc;
SessionContent *sc;
session_content *sc2 = g_new0(session_content, 1);
GError *err;
GSList *el;
const gchar *from = lm_message_get_from(jn->message);
// We're looking if the session exist
sess = session_find_by_sid(jn->sid, from);
if (sess == NULL) {
jingle_send_iq_error(jn->message, "cancel", "item-not-found", "unknown-session");
return;
}
if (!check_contents(jn, &err)) {
scr_log_print(LPRINT_DEBUG, "jingle: One of the content element was invalid (%s)",
err->message);
jingle_send_iq_error(jn->message, "cancel", "bad-request", NULL);
return;
}
jingle_ack_iq(jn->message);
sc2->sid = sess->sid;
sc2->from = (sess->origin == JINGLE_SESSION_INCOMING) ? sess->from : sess->to;
// TODO: it's really bad done!
for (el = jn->content; el; el = el->next) {
jc = (JingleContent*)el->data;
sc2->name = jc->name;
sc = session_find_sessioncontent(sess, jc->name);
session_changestate_sessioncontent(sess, jc->name,
JINGLE_SESSION_STATE_ACTIVE);
sc->transfuncs->init(sc2, sc->transfuncs->check(jc, NULL));
}
// We delete content who haven't been accepted
for (el = sess->content; el; el = el->next) {
sc = (SessionContent*) el->data;
if (sc->state == JINGLE_SESSION_STATE_PENDING) {
scr_log_print(LPRINT_DEBUG, "Delete %s!", sc->name);
session_remove_sessioncontent(sess, sc->name);
}
}
// Go go go! We start jobs!
for (el = sess->content; el; el = el->next) {
sc = (SessionContent*)el->data;
sc2->name = sc->name;
sc->appfuncs->start(sc2);
}
}
void handle_session_terminate(JingleNode *jn)
{
JingleSession *sess;
GSList *el;
SessionContent *sc;
if ((sess = session_find(jn)) == NULL) {
jingle_send_iq_error(jn->message, "cancel", "item-not-found", "unknown-session");
return;
}
for (el = sess->content; el; el = el->next) {
sc = (SessionContent*)el->data;
if (!g_strcmp0(lm_message_get_from(jn->message),
(sess->origin == JINGLE_SESSION_INCOMING) ? sess->from : sess->to))
sc->appfuncs->stop(sc->description);
session_remove_sessioncontent(sess, sc->name);
}
session_delete(sess);
jingle_ack_iq(jn->message);
}