implemented child_up() bus hook

src/charon/bus/bus.c

@@ -542,6 +542,39 @@ static void ike_rekey(private_bus_t *this, ike_sa_t *old, ike_sa_t *new)
 	this->mutex->unlock(this->mutex);
 }
 
+/**
+ * Implementation of bus_t.child_updown
+ */
+static void child_updown(private_bus_t *this, child_sa_t *child_sa, bool up)
+{
+	enumerator_t *enumerator;
+	ike_sa_t *ike_sa;
+	entry_t *entry;
+	bool keep;
+	
+	ike_sa = pthread_getspecific(this->thread_sa);
+	
+	this->mutex->lock(this->mutex);
+	enumerator = this->listeners->create_enumerator(this->listeners);
+	while (enumerator->enumerate(enumerator, &entry))
+	{
+		if (entry->calling || !entry->listener->child_updown)
+		{
+			continue;
+		}
+		entry->calling++;
+		keep = entry->listener->child_updown(entry->listener,
+											 ike_sa, child_sa, up);
+		entry->calling--;
+		if (!keep)
+		{
+			unregister_listener(this, entry, enumerator);
+		}
+	}
+	enumerator->destroy(enumerator);
+	this->mutex->unlock(this->mutex);
+}
+
 /**
  * Implementation of bus_t.child_rekey
  */
@@ -641,6 +674,7 @@ bus_t *bus_create()
 	this->public.ike_keys = (void(*)(bus_t*, ike_sa_t *ike_sa, diffie_hellman_t *dh, chunk_t nonce_i, chunk_t nonce_r, ike_sa_t *rekey))ike_keys;
 	this->public.child_keys = (void(*)(bus_t*, child_sa_t *child_sa, diffie_hellman_t *dh, chunk_t nonce_i, chunk_t nonce_r))child_keys;
 	this->public.ike_rekey = (void(*)(bus_t*, ike_sa_t *old, ike_sa_t *new))ike_rekey;
+	this->public.child_updown = (void(*)(bus_t*, child_sa_t *child_sa, bool up))child_updown;
 	this->public.child_rekey = (void(*)(bus_t*, child_sa_t *old, child_sa_t *new))child_rekey;
 	this->public.authorize = (bool(*)(bus_t*, linked_list_t *auth, bool final))authorize;
 	this->public.destroy = (void(*)(bus_t*)) destroy;

src/charon/bus/bus.h

@@ -269,6 +269,14 @@ struct bus_t {
 	 */
 	void (*ike_rekey)(bus_t *this, ike_sa_t *old, ike_sa_t *new);
 	
+	/**
+	 * CHILD_SA up/down hook.
+	 *
+	 * @param child_sa	CHILD_SA coming up/going down
+	 * @param up		TRUE for an up event, FALSE for a down event
+	 */
+	void (*child_updown)(bus_t *this, child_sa_t *child_sa, bool up);
+	
 	/**
 	 * CHILD_SA rekeying hook.
 	 *

src/charon/sa/ike_sa.c

@@ -1169,7 +1169,8 @@ static status_t initiate(private_ike_sa_t *this,
 #endif /* ME */
 	{
 		/* normal IKE_SA with CHILD_SA */
-		task = (task_t*)child_create_create(&this->public, child_cfg, tsi, tsr);
+		task = (task_t*)child_create_create(&this->public, child_cfg, FALSE,
+											tsi, tsr);
 		child_cfg->destroy(child_cfg);
 		if (reqid)
 		{

src/charon/sa/task_manager.c

@@ -678,7 +678,8 @@ static status_t process_request(private_task_manager_t *this,
 				this->passive_tasks->insert_last(this->passive_tasks, task);
 				task = (task_t*)ike_config_create(this->ike_sa, FALSE);
 				this->passive_tasks->insert_last(this->passive_tasks, task);
-				task = (task_t*)child_create_create(this->ike_sa, NULL, NULL, NULL);
+				task = (task_t*)child_create_create(this->ike_sa, NULL, FALSE,
+													NULL, NULL);
 				this->passive_tasks->insert_last(this->passive_tasks, task);
 				task = (task_t*)ike_auth_lifetime_create(this->ike_sa, FALSE);
 				this->passive_tasks->insert_last(this->passive_tasks, task);
@@ -726,8 +727,8 @@ static status_t process_request(private_task_manager_t *this,
 					}
 					else
 					{
-						task = (task_t*)child_create_create(this->ike_sa,
+						task = (task_t*)child_create_create(this->ike_sa, NULL,
-															NULL, NULL, NULL);
+															FALSE, NULL, NULL);
 					}
 				}
 				else

src/charon/sa/tasks/child_create.c

@@ -158,6 +158,11 @@ struct private_child_create_t {
 	 * successfully established the CHILD?
 	 */
 	bool established;
+	
+	/**
+	 * whether the CHILD_SA rekeys an existing one
+	 */
+	bool rekey;
 };
 
 /**
@@ -940,6 +945,10 @@ static status_t build_r(private_child_create_t *this, message_t *message)
 		 this->child_sa->get_traffic_selectors(this->child_sa, TRUE),
 		 this->child_sa->get_traffic_selectors(this->child_sa, FALSE));
 	
+	if (!this->rekey)
+	{	/* invoke the child_up() hook if we are not rekeying */
+		charon->bus->child_updown(charon->bus, this->child_sa, TRUE);
+	}
 	return SUCCESS;
 }
 
@@ -1052,6 +1061,11 @@ static status_t process_i(private_child_create_t *this, message_t *message)
 			 ntohl(this->child_sa->get_spi(this->child_sa, FALSE)),
 			 this->child_sa->get_traffic_selectors(this->child_sa, TRUE),
 			 this->child_sa->get_traffic_selectors(this->child_sa, FALSE));
+		
+		if (!this->rekey)
+		{	/* invoke the child_up() hook if we are not rekeying */
+			charon->bus->child_updown(charon->bus, this->child_sa, TRUE);
+		}
 	}
 	else
 	{
@@ -1174,7 +1188,8 @@ static void destroy(private_child_create_t *this)
 /*
  * Described in header.
  */
-child_create_t *child_create_create(ike_sa_t *ike_sa, child_cfg_t *config,
+child_create_t *child_create_create(ike_sa_t *ike_sa,
+							child_cfg_t *config, bool rekey,
 							traffic_selector_t *tsi, traffic_selector_t *tsr)
 {
 	private_child_create_t *this = malloc_thing(private_child_create_t);
@@ -1222,6 +1237,7 @@ child_create_t *child_create_create(ike_sa_t *ike_sa, child_cfg_t *config,
 	this->other_cpi = 0;
 	this->reqid = 0;
 	this->established = FALSE;
+	this->rekey = rekey;
 	
 	return &this->public;
 }

src/charon/sa/tasks/child_create.h

@@ -71,11 +71,13 @@ struct child_create_t {
  *
  * @param ike_sa		IKE_SA this task works for
  * @param config		child_cfg if task initiator, NULL if responder
+ * @param rekey			whether we do a rekey or not
  * @param tsi			source of triggering packet, or NULL
  * @param tsr			destination of triggering packet, or NULL
  * @return				child_create task to handle by the task_manager
  */
-child_create_t *child_create_create(ike_sa_t *ike_sa, child_cfg_t *config,
+child_create_t *child_create_create(ike_sa_t *ike_sa,
+							child_cfg_t *config, bool rekey,
 							traffic_selector_t *tsi, traffic_selector_t *tsr);
 
 #endif /** CHILD_CREATE_H_ @}*/

src/charon/sa/tasks/child_rekey.c

@@ -157,7 +157,8 @@ static status_t build_i(private_child_rekey_t *this, message_t *message)
 	
 	/* ... our CHILD_CREATE task does the hard work for us. */
 	reqid = this->child_sa->get_reqid(this->child_sa);
-	this->child_create = child_create_create(this->ike_sa, config, NULL, NULL);
+	this->child_create = child_create_create(this->ike_sa, config, TRUE,
+											 NULL, NULL);
 	this->child_create->use_reqid(this->child_create, reqid);
 	this->child_create->task.build(&this->child_create->task, message);
 	
@@ -426,7 +427,7 @@ child_rekey_t *child_rekey_create(ike_sa_t *ike_sa, protocol_id_t protocol,
 		this->public.task.build = (status_t(*)(task_t*,message_t*))build_r;
 		this->public.task.process = (status_t(*)(task_t*,message_t*))process_r;
 		this->initiator = FALSE;
-		this->child_create = child_create_create(ike_sa, NULL, NULL, NULL);
+		this->child_create = child_create_create(ike_sa, NULL, TRUE, NULL, NULL);
 	}
 	
 	this->ike_sa = ike_sa;