added strongswan.conf option charon.reuse_iksa=no to create each CHILD_SA in a new IKE_SA

src/charon/control/controller.c

@@ -38,6 +38,11 @@ struct private_controller_t {
 	 * Public part of stroke_t object.
 	 */
 	controller_t public;
+	
+	/**
+	 * should we reuse established IKE_SAs when setting up CHILD_SAs?
+	 */
+	bool reuse_ikesa;
 };
 
 
@@ -103,6 +108,11 @@ struct interface_job_t {
 	 * associated listener 
 	 */
 	interface_bus_listener_t listener;
+	
+	/**
+	 * back reference to controller
+	 */
+	private_controller_t *controller;
 };
 
 /**
@@ -150,8 +160,16 @@ static status_t initiate_execute(interface_job_t *job)
 	interface_bus_listener_t *listener = &job->listener;
 	peer_cfg_t *peer_cfg = listener->peer_cfg;
 	
-	ike_sa = charon->ike_sa_manager->checkout_by_config(charon->ike_sa_manager,
+	if (job->controller->reuse_ikesa)
-														peer_cfg);
+	{
+		ike_sa = charon->ike_sa_manager->checkout_by_config(
+											charon->ike_sa_manager, peer_cfg);
+	}
+	else
+	{
+		ike_sa = charon->ike_sa_manager->checkout_new(
+											charon->ike_sa_manager, TRUE);
+	}
 	listener->ike_sa = ike_sa;
 	
 	if (ike_sa->get_peer_cfg(ike_sa) == NULL)
@@ -184,6 +202,7 @@ static status_t initiate(private_controller_t *this,
 	job.listener.status = FAILED;
 	job.listener.child_cfg = child_cfg;
 	job.listener.peer_cfg = peer_cfg;
+	job.controller = this;
 	job.public.execute = (void*)initiate_execute;
 	job.public.destroy = nop;
 
@@ -251,7 +270,7 @@ static status_t terminate_ike_execute(interface_job_t *job)
 /**
  * Implementation of controller_t.terminate_ike.
  */
-static status_t terminate_ike(controller_t *this, u_int32_t unique_id, 
+static status_t terminate_ike(private_controller_t *this, u_int32_t unique_id, 
 							  controller_cb_t callback, void *param)
 {
 	interface_job_t job;
@@ -262,6 +281,7 @@ static status_t terminate_ike(controller_t *this, u_int32_t unique_id,
 	job.listener.param = param;
 	job.listener.status = FAILED;
 	job.listener.id = unique_id;
+	job.controller = this;
 	job.public.execute = (void*)terminate_ike_execute;
 	job.public.destroy = nop;
 
@@ -353,7 +373,7 @@ static status_t terminate_child_execute(interface_job_t *job)
 /**
  * Implementation of controller_t.terminate_child.
  */
-static status_t terminate_child(controller_t *this, u_int32_t reqid, 
+static status_t terminate_child(private_controller_t *this, u_int32_t reqid, 
 								controller_cb_t callback, void *param)
 {
 	interface_job_t job;
@@ -364,6 +384,7 @@ static status_t terminate_child(controller_t *this, u_int32_t reqid,
 	job.listener.param = param;
 	job.listener.status = FAILED;
 	job.listener.id = reqid;
+	job.controller = this;
 	job.public.execute = (void*)terminate_child_execute;
 	job.public.destroy = nop;
 
@@ -410,8 +431,17 @@ static status_t route_execute(interface_job_t *job)
 	ike_sa_t *ike_sa;
 	interface_bus_listener_t *listener = &job->listener;
 	peer_cfg_t *peer_cfg = listener->peer_cfg;
-	ike_sa = charon->ike_sa_manager->checkout_by_config(charon->ike_sa_manager,
+	
-														peer_cfg);
+	if (job->controller->reuse_ikesa)
+	{
+		ike_sa = charon->ike_sa_manager->checkout_by_config(
+											charon->ike_sa_manager, peer_cfg);
+	}
+	else
+	{
+		ike_sa = charon->ike_sa_manager->checkout_new(
+											charon->ike_sa_manager, TRUE);
+	}
 	listener->ike_sa = ike_sa;
 	
 	if (ike_sa->get_peer_cfg(ike_sa) == NULL)
@@ -429,7 +459,7 @@ static status_t route_execute(interface_job_t *job)
 /**
  * Implementation of controller_t.route.
  */
-static status_t route(controller_t *this,
+static status_t route(private_controller_t *this,
 					  peer_cfg_t *peer_cfg, child_cfg_t *child_cfg,
 					  controller_cb_t callback, void *param)
 {
@@ -442,6 +472,7 @@ static status_t route(controller_t *this,
 	job.listener.status = FAILED;
 	job.listener.peer_cfg = peer_cfg;
 	job.listener.child_cfg = child_cfg;
+	job.controller = this;
 	job.public.execute = (void*)route_execute;
 	job.public.destroy = nop;
 
@@ -507,7 +538,7 @@ static status_t unroute_execute(interface_job_t *job)
 /**
  * Implementation of controller_t.unroute.
  */
-static status_t unroute(controller_t *this, u_int32_t reqid, 
+static status_t unroute(private_controller_t *this, u_int32_t reqid, 
 						controller_cb_t callback, void *param)
 {
 	interface_job_t job;
@@ -518,6 +549,7 @@ static status_t unroute(controller_t *this, u_int32_t reqid,
 	job.listener.param = param;
 	job.listener.status = FAILED;
 	job.listener.id = reqid;
+	job.controller = this;
 	job.public.execute = (void*)unroute_execute;
 	job.public.destroy = nop;
 
@@ -561,6 +593,8 @@ controller_t *controller_create(void)
 	this->public.unroute = (status_t(*)(controller_t*,u_int32_t,controller_cb_t,void*))unroute;
 	this->public.destroy = (void (*)(controller_t*))destroy;
 	
+	this->reuse_ikesa = lib->settings->get_bool(lib->settings,
+												"charon.reuse_ikesa", TRUE);
 	return &this->public;
 }