Added a get_sa() method to the bus, allowing a thread to lookup its IKE_SA

src/charon/bus/bus.c

@@ -243,6 +243,14 @@ static void set_sa(private_bus_t *this, ike_sa_t *ike_sa)
 	pthread_setspecific(this->thread_sa, ike_sa);
 }
 
+/**
+ * Implementation of bus_t.get_sa
+ */
+static ike_sa_t* get_sa(private_bus_t *this)
+{
+	return pthread_getspecific(this->thread_sa);
+}
+
 /**
  * data associated to a signal, passed to callback
  */
@@ -744,6 +752,7 @@ bus_t *bus_create()
 	this->public.remove_listener = (void(*)(bus_t*,listener_t*))remove_listener;
 	this->public.listen = (void(*)(bus_t*, listener_t *listener, job_t *job))listen_;
 	this->public.set_sa = (void(*)(bus_t*,ike_sa_t*))set_sa;
+	this->public.get_sa = (ike_sa_t*(*)(bus_t*))get_sa;
 	this->public.log = (void(*)(bus_t*,debug_t,level_t,char*,...))log_;
 	this->public.vlog = (void(*)(bus_t*,debug_t,level_t,char*,va_list))vlog;
 	this->public.alert = (void(*)(bus_t*, alert_t alert, ...))alert;

src/charon/bus/bus.h

@@ -190,6 +190,16 @@ struct bus_t {
 	 */
 	void (*set_sa) (bus_t *this, ike_sa_t *ike_sa);
 
+	/**
+	 * Get the IKE_SA the calling thread is currently using.
+	 *
+	 * If a thread currently does not know what IKE_SA it is processing,
+	 * it can call get_sa() to look up the SA set during checkout via set_sa().
+	 *
+	 * @return			registered ike_sa, NULL if none registered
+	 */
+	ike_sa_t* (*get_sa)(bus_t *this);
+
 	/**
 	 * Send a log message to the bus.
 	 *