ike: Publish getter for the current message ID on IKE_SA

src/libcharon/sa/ike_sa.c

@@ -617,6 +617,12 @@ METHOD(ike_sa_t, set_message_id, void,
 	}
 }
 
+METHOD(ike_sa_t, get_message_id, uint32_t,
+	private_ike_sa_t *this, bool initiate)
+{
+	return this->task_manager->get_mid(this->task_manager, initiate);
+}
+
 METHOD(ike_sa_t, send_keepalive, void,
 	private_ike_sa_t *this, bool scheduled)
 {
@@ -2885,6 +2891,7 @@ ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id, bool initiator,
 			.get_other_host = _get_other_host,
 			.set_other_host = _set_other_host,
 			.set_message_id = _set_message_id,
+			.get_message_id = _get_message_id,
 			.float_ports = _float_ports,
 			.update_hosts = _update_hosts,
 			.get_my_id = _get_my_id,

src/libcharon/sa/ike_sa.h

@@ -554,7 +554,7 @@ struct ike_sa_t {
 	void (*set_proposal)(ike_sa_t *this, proposal_t *proposal);
 
 	/**
-	 * Set the message id of the IKE_SA.
+	 * Set the message ID of the IKE_SA.
 	 *
 	 * The IKE_SA stores two message IDs, one for initiating exchanges (send)
 	 * and one to respond to exchanges (expect).
@@ -564,6 +564,17 @@ struct ike_sa_t {
 	 */
 	void (*set_message_id)(ike_sa_t *this, bool initiate, uint32_t mid);
 
+	/**
+	 * Get the message ID of the IKE_SA.
+	 *
+	 * The IKE_SA stores two message IDs, one for initiating exchanges (send)
+	 * and one to respond to exchanges (expect).
+	 *
+	 * @param initiate		TRUE to get message ID for initiating
+	 * @return				current message
+	 */
+	uint32_t (*get_message_id)(ike_sa_t *this, bool initiate);
+
 	/**
 	 * Add an additional address for the peer.
 	 *