/*
* jingle.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 <config.h>
#include <glib.h>
#include <loudmouth/loudmouth.h>
#include <mcabber/xmpp.h>
#include <mcabber/hooks.h>
#include <mcabber/modules.h>
#include <mcabber/logprint.h>
#include <mcabber/xmpp_helper.h>
#include <mcabber/events.h>
#include <jingle/jingle.h>
#include <jingle/check.h>
#include <jingle/action-handlers.h>
#include <jingle/register.h>
#include <jingle/send.h>
#include <jingle/sessions.h>
static void jingle_register_lm_handlers(void);
static void jingle_unregister_lm_handlers(void);
static guint jingle_connect_hh(const gchar *hname, hk_arg_t *args,
gpointer ignore);
static guint jingle_disconn_hh(const gchar *hname, hk_arg_t *args,
gpointer ignore);
static void jingle_init(void);
static void jingle_uninit(void);
static void lm_insert_jinglecontent(gpointer data, gpointer userdata);
static LmMessageHandler* jingle_iq_handler = NULL;
static GSList *ack_handlers = NULL;
static guint connect_hid = 0;
static guint disconn_hid = 0;
/**
* Must be aligned with the values in JingleAction
* for easy acces.
*/
struct JingleActionList jingle_action_list[] = {
{ NULL, NULL }, // for JINGLE_UNKNOWN_ACTION
{ "content-accept", handle_content_accept },
{ "content-add", handle_content_add },
{ "content-modify", NULL },
{ "content-reject", handle_content_reject },
{ "content-remove", handle_content_remove },
{ "description-info", NULL },
{ "security-info", NULL },
{ "session-accept", NULL },
{ "session-info", NULL },
{ "session-initiate", handle_session_initiate },
{ "session-terminate", handle_session_terminate },
{ "transport-accept", NULL },
{ "transport-info", NULL },
{ "transport-reject", NULL },
{ "transport-replace", NULL },
};
module_info_t info_jingle = {
.branch = MCABBER_BRANCH,
.api = MCABBER_API_VERSION,
.version = PROJECT_VERSION,
.description = "Main Jingle module,"
" required for file transport, voip...\n",
.requires = NULL,
.init = jingle_init,
.uninit = jingle_uninit,
.next = NULL,
};
LmHandlerResult jingle_handle_iq(LmMessageHandler *handler,
LmConnection *connection, LmMessage *message,
gpointer user_data)
{
LmMessageSubType iqtype = lm_message_get_sub_type(message);
if (iqtype != LM_MESSAGE_SUB_TYPE_SET)
return LM_HANDLER_RESULT_ALLOW_MORE_HANDLERS;
JingleNode *jn = g_new0(JingleNode, 1);
GError *error = NULL;
LmMessageNode *root = lm_message_get_node(message);
LmMessageNode *jnode = lm_message_node_get_child(root, "jingle");
if (!jnode) // no <jingle> element found
return LM_HANDLER_RESULT_ALLOW_MORE_HANDLERS;
if (g_strcmp0(lm_message_node_get_attribute(jnode, "xmlns"), NS_JINGLE)) {
scr_log_print(LPRINT_DEBUG,
"jingle: Received a jingle IQ with an invalid namespace");
return LM_HANDLER_RESULT_REMOVE_MESSAGE;
}
check_jingle(message, jnode, jn, &error);
if (error != NULL) {
if (error->domain == JINGLE_CHECK_ERROR) {
// request malformed, we reply with a bad-request
jingle_send_iq_error(message, "cancel", "bad-request", NULL);
scr_log_print(LPRINT_DEBUG,
"jingle: ", error->message);
}
g_clear_error(&error);
return LM_HANDLER_RESULT_REMOVE_MESSAGE;
}
scr_log_print(LPRINT_DEBUG, "jingle: Received a valid jingle IQ");
if (jingle_action_list[jn->action].handler == NULL) {
jingle_send_iq_error(message, "cancel", "feature-not-implemented", NULL);
return LM_HANDLER_RESULT_REMOVE_MESSAGE;
}
jingle_action_list[jn->action].handler(jn);
return LM_HANDLER_RESULT_REMOVE_MESSAGE;
}
/**
* Handle incoming ack iq (type result or error).
*/
LmHandlerResult jingle_handle_ack_iq(LmMessageHandler *handler,
LmConnection *connection,
LmMessage *message, gpointer user_data)
{
ack_handlers = g_slist_remove(ack_handlers, handler);
lm_message_handler_unref(handler);
// TODO: check subtype
if (user_data != NULL) {
JingleAckHandle *ah = user_data;
if(ah->callback != NULL)
ah->callback(message, ah->user_data);
g_free(ah);
}
return LM_HANDLER_RESULT_REMOVE_MESSAGE;
}
LmMessageHandler *jingle_new_ack_handler(JingleAckHandle *ah)
{
LmMessageHandler *h = lm_message_handler_new(jingle_handle_ack_iq,
(gpointer) ah, NULL);
ack_handlers = g_slist_append(ack_handlers, h);
return h;
}
/**
* mcabber /event callback.
*/
gboolean evscallback_jingle(guint evcontext, const gchar *arg,
gpointer userdata)
{
JingleNode *jn = userdata;
/*
if (G_UNLIKELY(!jn)) {
scr_LogPrint(LPRINT_LOGNORM, "Error in evs callback.");
return FALSE;
}
*/
if (evcontext == EVS_CONTEXT_TIMEOUT) {
scr_LogPrint(LPRINT_LOGNORM, "Jingle event from %s timed out, cancelled.",
jn->initiator);
jingle_free_jinglenode(jn);
return FALSE;
}
if (evcontext == EVS_CONTEXT_CANCEL) {
scr_LogPrint(LPRINT_LOGNORM, "Jingle event from %s cancelled.",
jn->initiator);
jingle_free_jinglenode(jn);
return FALSE;
}
if (!(evcontext == EVS_CONTEXT_ACCEPT || evcontext == EVS_CONTEXT_REJECT)) {
scr_LogPrint(LPRINT_LOGNORM, "Jingle event from %s cancelled.",
jn->initiator);
jingle_free_jinglenode(jn);
return FALSE;
}
if (evcontext == EVS_CONTEXT_ACCEPT) {
scr_LogPrint(LPRINT_LOGNORM, "Jingle event from %s accepted.",
jn->initiator);
jingle_send_session_accept(jn);
} else {
scr_LogPrint(LPRINT_LOGNORM, "Jingle event from %s cancelled.",
jn->initiator);
jingle_send_session_terminate(jn, "decline");
jingle_free_jinglenode(jn);
}
return FALSE;
}
/**
* According to the specifications:
* "An entity that receives an IQ request of type "get" or "set" MUST
* reply with an IQ response of type "result" or "error"."
* For Jingle's IQ, we have to reply with an empty "result" IQ to acknowledge
* receipt.
*/
void jingle_ack_iq(LmMessage *m)
{
LmMessage *r;
r = lm_message_new_iq_from_query(m, LM_MESSAGE_SUB_TYPE_RESULT);
lm_connection_send(lconnection, r, NULL);
lm_message_unref(r);
}
/**
* Create an error IQ.
*/
LmMessage *jingle_new_iq_error(LmMessage *m, const gchar *errtype,
const gchar *cond, const gchar *jinglecond)
{
LmMessage *r;
LmMessageNode *err, *tmpnode;
r = lm_message_new_iq_from_query(m, LM_MESSAGE_SUB_TYPE_ERROR);
err = lm_message_node_add_child(r->node, "error", NULL);
lm_message_node_set_attribute(err, "type", errtype);
// error condition as defined by RFC 3920bis section 8.3.3
if (cond != NULL) {
tmpnode = lm_message_node_add_child(err, cond, NULL);
lm_message_node_set_attribute(tmpnode, "xmlns", NS_XMPP_STANZAS);
}
// jingle error condition as defined by XEP-0166 section 10
if (jinglecond != NULL) {
tmpnode = lm_message_node_add_child(err, jinglecond, NULL);
lm_message_node_set_attribute(tmpnode, "xmlns", NS_JINGLE_ERRORS);
}
return r;
}
/**
* Reply to a Jingle IQ with an error.
*/
void jingle_send_iq_error(LmMessage *m, const gchar *errtype,
const gchar *cond, const gchar *jinglecond)
{
LmMessage *r = jingle_new_iq_error(m, errtype, cond, jinglecond);
if (r) {
lm_connection_send(lconnection, r, NULL);
}
}
/**
* Find the jingle_action corresponding to a string
*/
JingleAction jingle_action_from_str(const gchar *string)
{
guint i, actstrlen = sizeof(jingle_action_list)/sizeof(jingle_action_list[0]);
for (i = 0; i < actstrlen; i++)
if (!g_strcmp0(jingle_action_list[i].name, string))
return (JingleAction) i;
return JINGLE_UNKNOWN_ACTION;
}
void jingle_free_jinglenode(JingleNode *jn)
{
g_slist_foreach(jn->content, (GFunc)g_free, NULL);
g_slist_free(jn->content);
lm_message_unref(jn->message);
g_free(jn);
}
static void jingle_unregister_lm_handlers(void)
{
if (lconnection) {
lm_connection_unregister_message_handler(lconnection, jingle_iq_handler,
LM_MESSAGE_TYPE_IQ);
}
}
static void jingle_register_lm_handlers(void)
{
jingle_unregister_lm_handlers();
if (lconnection) {
lm_connection_register_message_handler(lconnection, jingle_iq_handler,
LM_MESSAGE_TYPE_IQ,
LM_HANDLER_PRIORITY_FIRST);
}
}
static guint jingle_connect_hh(const gchar *hname, hk_arg_t *args,
gpointer ignore)
{
jingle_register_lm_handlers();
return HOOK_HANDLER_RESULT_ALLOW_MORE_HANDLERS;
}
static guint jingle_disconn_hh(const gchar *hname, hk_arg_t *args,
gpointer ignore)
{
jingle_unregister_lm_handlers();
return HOOK_HANDLER_RESULT_ALLOW_MORE_HANDLERS;
}
static void jingle_init(void)
{
jingle_iq_handler = lm_message_handler_new(jingle_handle_iq, NULL, NULL);
xmpp_add_feature(NS_JINGLE);
connect_hid = hk_add_handler(jingle_connect_hh, HOOK_POST_CONNECT,
G_PRIORITY_DEFAULT_IDLE, NULL);
disconn_hid = hk_add_handler(jingle_disconn_hh, HOOK_PRE_DISCONNECT,
G_PRIORITY_DEFAULT_IDLE, NULL);
jingle_register_lm_handlers();
}
static void jingle_uninit(void)
{
xmpp_del_feature(NS_JINGLE);
hk_del_handler(HOOK_POST_CONNECT, connect_hid);
hk_del_handler(HOOK_PRE_DISCONNECT, disconn_hid);
jingle_unregister_lm_handlers();
lm_message_handler_invalidate(jingle_iq_handler);
lm_message_handler_unref(jingle_iq_handler);
}
LmMessage *lm_message_from_jinglenode(const JingleNode *jn, const gchar *to)
{
LmMessage* m;
LmMessageNode *jnode;
const gchar *actionstr;
m = lm_message_new_with_sub_type(to, LM_MESSAGE_TYPE_IQ,
LM_MESSAGE_SUB_TYPE_SET);
jnode = lm_message_node_add_child(m->node, "jingle", NULL);
if ((actionstr = jingle_action_list[jn->action].name))
lm_message_node_set_attribute(jnode, "action", actionstr);
else
return NULL;
if (jn->initiator)
lm_message_node_set_attribute(jnode, "initiator", jn->initiator);
if (jn->responder)
lm_message_node_set_attribute(jnode, "responder", jn->responder);
if (jn->sid)
lm_message_node_set_attribute(jnode, "sid", jn->sid);
else
return NULL;
g_slist_foreach(jn->content, lm_insert_jinglecontent, jnode);
return m;
}
static void lm_insert_jinglecontent(gpointer data, gpointer userdata)
{
const gchar *xmlns;
JingleTransportFuncs *tfunc;
JingleAppFuncs *afunc;
JingleContent* content = (JingleContent*) data;
LmMessageNode* dad = (LmMessageNode*) userdata;
LmMessageNode* node = (LmMessageNode*) lm_message_node_add_child(dad,
"content", NULL);
if (content->creator == JINGLE_CREATOR_INITIATOR)
lm_message_node_set_attribute(node, "creator", "initiator");
else
lm_message_node_set_attribute(node, "creator", "responder");
if (content->disposition)
lm_message_node_set_attribute(node, "disposition", content->disposition);
if (content->name)
lm_message_node_set_attribute(node, "name", content->name);
if (content->senders == JINGLE_SENDERS_BOTH)
lm_message_node_set_attribute(node, "senders", "both");
else if (content->senders == JINGLE_SENDERS_INITIATOR)
lm_message_node_set_attribute(node, "senders", "initiator");
else if (content->senders == JINGLE_SENDERS_RESPONDER)
lm_message_node_set_attribute(node, "senders", "responder");
xmlns = lm_message_node_get_attribute(content->transport, "xmlns");
tfunc = jingle_get_transportfuncs(xmlns);
//tfunc->handle(tfunc->check(content, NULL), node);
xmlns = lm_message_node_get_attribute(content->description, "xmlns");
afunc = jingle_get_appfuncs(xmlns);
//afunc->handle(afunc->check(content, NULL), node);
}
void handle_trans_data(const gchar *xmlns, gconstpointer data, const gchar *data2, guint len)
{
SessionContent *sc = session_find_transport(xmlns, data);
if (sc == NULL) {
return;
}
sc->appfuncs->handle_data(sc->description, data2, len);
}
gchar *new_sid(void)
{
gchar *sid;
gchar car[] = "azertyuiopqsdfghjklmwxcvbn1234567890AZERTYUIOPQSDFGHJKLMWXCVBN";
int i;
sid = g_new0(gchar, 11);
for (i = 0; i < 10; i++)
sid[i] = car[g_random_int_range(0, sizeof(car)/sizeof(car[0]))];
sid[10] = '\0';
return sid;
}