[asterisk-commits] rmudgett: branch group/CCSS r240269 - in /team/group/CCSS: channels/ include/...

[SVN commits to the Asterisk project]

Author: rmudgett
Date: Thu Jan 14 16:32:11 2010
New Revision: 240269

URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=240269
Log:
More CCSS agent constructor failure fixes.

*  Changed the agent object agent_destroy() callback to only call the
agent destructor callback.  The destructor callback must stop the offer
timer if it needs to do so.
*  The agent destructor callback must check to see if the private_data
pointer is NULL.  The agent constructor may have failed.
*  Fixed a double free of the agent config parameters if the agent init
callback failed.

Modified:
    team/group/CCSS/channels/chan_sip.c
    team/group/CCSS/include/asterisk/ccss.h
    team/group/CCSS/main/ccss.c

Modified: team/group/CCSS/channels/chan_sip.c
URL: http://svnview.digium.com/svn/asterisk/team/group/CCSS/channels/chan_sip.c?view=diff&rev=240269&r1=240268&r2=240269
==============================================================================
--- team/group/CCSS/channels/chan_sip.c (original)
+++ team/group/CCSS/channels/chan_sip.c Thu Jan 14 16:32:11 2010
@@ -3547,9 +3547,12 @@
 {
 	struct sip_cc_agent_pvt *agent_pvt = agent->private_data;
 
-	if (agent_pvt->offer_timer_id != -1) {
-		AST_SCHED_DEL(sched, agent_pvt->offer_timer_id);
-	}
+	if (!agent_pvt) {
+		/* The agent constructor probably failed. */
+		return;
+	}
+
+	sip_cc_agent_stop_offer_timer(agent);
 	agent_pvt->original_call = dialog_unref(agent_pvt->original_call, "SIP CC agent destructor: Remove ref to original call");
 	if (agent_pvt->subscribe_pvt) {
 		sip_pvt_lock(agent_pvt->subscribe_pvt);

Modified: team/group/CCSS/include/asterisk/ccss.h
URL: http://svnview.digium.com/svn/asterisk/team/group/CCSS/include/asterisk/ccss.h?view=diff&rev=240269&r1=240268&r2=240269
==============================================================================
--- team/group/CCSS/include/asterisk/ccss.h (original)
+++ team/group/CCSS/include/asterisk/ccss.h Thu Jan 14 16:32:11 2010
@@ -1044,6 +1044,10 @@
 	 * \details
 	 * The core will call this function upon completion
 	 * or failure of CC.
+	 *
+	 * \note
+	 * The agent private_data pointer may be NULL if the agent
+	 * constructor failed.
 	 */
 	void (*destructor)(struct ast_cc_agent *agent);
 };

Modified: team/group/CCSS/main/ccss.c
URL: http://svnview.digium.com/svn/asterisk/team/group/CCSS/main/ccss.c?view=diff&rev=240269&r1=240268&r2=240269
==============================================================================
--- team/group/CCSS/main/ccss.c (original)
+++ team/group/CCSS/main/ccss.c Thu Jan 14 16:32:11 2010
@@ -1841,10 +1841,13 @@
 	ast_assert(callbacks->destructor != NULL);
 }
 
-static void agent_destroy(void *data) {
+static void agent_destroy(void *data)
+{
 	struct ast_cc_agent *agent = data;
-	agent->callbacks->stop_offer_timer(agent);
-	agent->callbacks->destructor(agent);
+
+	if (agent->callbacks) {
+		agent->callbacks->destructor(agent);
+	}
 	agent->interface_tree = cc_unref(agent->interface_tree, "Destroying agent, removing ref to interface tree");
 	ast_cc_config_params_destroy(agent->cc_params);
 }
@@ -1854,29 +1857,37 @@
 		struct ast_cc_interface_tree *interface_tree)
 {
 	struct ast_cc_agent *agent;
+	struct ast_cc_config_params *cc_params;
 
 	if (!(agent = ao2_alloc(sizeof(*agent) + strlen(caller_name), agent_destroy))) {
 		return NULL;
 	}
 
 	agent->core_id = core_id;
+	strcpy(agent->interface, caller_name);
+	agent->interface_tree = cc_ref(interface_tree, "Agent now has reference to interface tree");
+
+	cc_params = ast_channel_get_cc_config_params(caller_chan);
+	if (!cc_params) {
+		cc_unref(agent, "Could not get channel config params.");
+		return NULL;
+	}
+	if (!(agent->cc_params = ast_cc_config_params_init())) {
+		cc_unref(agent, "Could not init agent config params.");
+		return NULL;
+	}
+	ast_cc_copy_config_params(agent->cc_params, cc_params);
+
 	if (!(agent->callbacks = find_agent_callbacks(caller_chan))) {
 		cc_unref(agent, "Could not find agent callbacks.");
 		return NULL;
 	}
 	check_callback_sanity(agent->callbacks);
-	if (!(agent->cc_params = ast_cc_config_params_init())) {
-		cc_unref(agent, "Could not init agent config params.");
-		return NULL;
-	}
-	strcpy(agent->interface, caller_name);
-	ast_cc_copy_config_params(agent->cc_params, ast_channel_get_cc_config_params(caller_chan));
+
 	if (agent->callbacks->init(agent, caller_chan)) {
-		ast_cc_config_params_destroy(agent->cc_params);
 		cc_unref(agent, "Agent init callback failed.");
 		return NULL;
 	}
-	agent->interface_tree = cc_ref(interface_tree, "Agent now has reference to interface tree");
 	ast_log_dynamic_level(cc_logger_level, "Created an agent with core_id %d and caller %s\n", agent->core_id, agent->interface);
 	return agent;
 }
@@ -2101,10 +2112,13 @@
 static void cc_generic_agent_destructor(struct ast_cc_agent *agent)
 {
 	struct cc_generic_agent_pvt *agent_pvt = agent->private_data;
+
 	if (!agent_pvt) {
+		/* The agent constructor probably failed. */
 		return;
 	}
 
+	cc_generic_agent_stop_offer_timer(agent);
 	if (agent_pvt->sub) {
 		agent_pvt->sub = ast_event_unsubscribe(agent_pvt->sub);
 	}