--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jingle/jingle.c Sun Jun 06 23:19:47 2010 +0200
@@ -0,0 +1,246 @@
+/*
+ * 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 <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/xmpp_defines.h>
+
+#include "jingle.h"
+#include "check.h"
+#include "register.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 LmMessageHandler* jingle_iq_handler = 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", NULL },
+ { "content-add", NULL },
+ { "content-modify", NULL },
+ { "content-reject", NULL },
+ { "content-remove", NULL },
+ { "description-info", NULL },
+ { "security-info", NULL },
+ { "session-accept", NULL },
+ { "session-info", NULL },
+ { "session-initiate", NULL },
+ { "session-terminate", NULL },
+ { "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 = MCABBER_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;
+ LmMessageNode *root = lm_message_get_node(message)->children;
+ LmMessageNode *node = lm_message_node_get_child(root, "jingle");
+
+ if (!node) // no <jingle> element found
+ return LM_HANDLER_RESULT_ALLOW_MORE_HANDLERS;
+
+ if (g_strcmp0(lm_message_node_get_attribute(node, "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(node, jn, &error);
+ if (error != NULL) {
+ if (error->code == JINGLE_CHECK_ERROR) {
+ // request malformed, we reply with a bad-request
+ jingle_send_iq_error(message, "cancel", "bad-request", NULL);
+ }
+ 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_action_list[jn->action].handler(message, jn, &error);
+ else
+ jingle_send_iq_error(message, "cancel", "feature-not-implemented",
+ "unsupported-info");
+
+ return LM_HANDLER_RESULT_REMOVE_MESSAGE;
+}
+
+/**
+ * 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);
+}
+
+/**
+ * Reply to a Jingle IQ with an error.
+ */
+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;
+}
+
+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);
+ lm_message_unref(r);
+ }
+}
+
+/**
+ * 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;
+}
+
+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);
+}