40 

    41 void handle_content_add(LmMessage *m, JingleNode *jn)

    42 {

    43   GError *err = NULL;

    44   GSList *child = NULL;

    45   JingleContent *cn;

    46   JingleAppFuncs *appfuncs; 

    47   JingleTransportFuncs *transfuncs;

    48   gconstpointer description, transport;

    49   const gchar *xmlns;

    50 

    51   if (!check_contents(jn, &err)) {

    52     scr_log_print(LPRINT_DEBUG, "jingle: One of the content element was invalid (%s)",

    53                   err->message);

    54     jingle_send_iq_error(m, "cancel", "bad-request", NULL);

    55     return;

    56   }

    57 

    58   // it's better if there is at least one content elem */

    59   if (g_slist_length(jn->content) < 1) {

    60     jingle_send_iq_error(m, "cancel", "bad-request", NULL);

    61     return;

    62   }

    63   

    64   // if a session with the same sid doesn't already exists

    65   if (session_find(jn) == NULL) {

    66     jingle_send_iq_error(m, "cancel", "unexpected-request", "out-of-order");

    67     return;

    68   }

    69 

    70   jingle_ack_iq(m);

    71 

    72   for (child = jn->content; child; child = child->next) {

    73     cn = (JingleContent *)(child->data);

    74     

    75     xmlns = lm_message_node_get_attribute(cn->description, "xmlns");

    76     appfuncs = jingle_get_appfuncs(xmlns);

    77     if (appfuncs == NULL) continue;

    78     

    79     xmlns = lm_message_node_get_attribute(cn->transport, "xmlns");

    80     transfuncs = jingle_get_transportfuncs(xmlns);

    81     if (appfuncs == NULL) continue;

    82     

    83     description = appfuncs->check(cn, &err);

    84     if (description == NULL || err != NULL) continue;

    85     transport = transfuncs->check(cn, &err);

    86     if (transport == NULL || err != NULL) continue;

    87   }

    88 }

    89