some message code cleanups

src/charon/encoding/message.c

@@ -710,6 +710,20 @@ static chunk_t get_packet_data (private_message_t *this)
 	return chunk_clone(this->packet->get_data(this->packet));
 }
 
+/**
+ * Implementation of message_t.is_encoded.
+ */
+static bool is_encoded(private_message_t *this)
+{
+	chunk_t data = this->packet->get_data(this->packet);
+	
+	if (data.ptr == NULL)
+	{
+		return FALSE;
+	}
+	return TRUE;
+}
+
 /**
  * Implementation of message_t.parse_header.
  */
@@ -1232,6 +1246,7 @@ message_t *message_create_from_packet(packet_t *packet)
 	this->public.parse_body = (status_t (*) (message_t *,crypter_t*,signer_t*)) parse_body;
 	this->public.get_packet = (packet_t * (*) (message_t*)) get_packet;
 	this->public.get_packet_data = (chunk_t (*) (message_t *this)) get_packet_data;
+	this->public.is_encoded = (bool (*) (message_t *this)) is_encoded;
 	this->public.destroy = (void(*)(message_t*))destroy;
 		
 	/* private values */
@@ -1272,24 +1287,3 @@ message_t *message_create()
 {
 	return message_create_from_packet(NULL);
 }
-
-/*
- * Described in Header.
- */
-message_t *message_create_notify_reply(host_t *source, host_t *destination, exchange_type_t exchange_type, bool original_initiator,ike_sa_id_t *ike_sa_id,notify_message_type_t notify_type)
-{
-	message_t *message = message_create_from_packet(NULL);
-	notify_payload_t *payload;
-	
-	message->set_source(message, source->clone(source));
-	message->set_destination(message, destination->clone(destination));
-	message->set_exchange_type(message, exchange_type);
-	message->set_request(message, FALSE);
-	message->set_message_id(message,0);
-	message->set_ike_sa_id(message, ike_sa_id);
-	
-	payload = notify_payload_create_from_protocol_and_type(PROTO_NONE, notify_type);
-	message->add_payload(message,(payload_t *) payload);
-	
-	return message;
-}

src/charon/encoding/message.h

@@ -306,7 +306,7 @@ struct message_t {
 	iterator_t * (*get_payload_iterator) (message_t *this);
 	
 	/**
-	 * Returns a clone of the internal stored packet_t object.
+	 * @brief Returns a clone of the internal stored packet_t object.
 	 *
 	 * @param this 		message_t object
 	 * @return			packet_t object as clone of internal one
@@ -314,13 +314,25 @@ struct message_t {
 	packet_t * (*get_packet) (message_t *this);
 	
 	/**
-	 * Returns a clone of the internal stored packet_t data.
+	 * @brief Returns a clone of the internal stored packet_t data.
 	 *
 	 * @param this 		message_t object
 	 * @return			clone of the internal stored packet_t data.
 	 */	
 	chunk_t (*get_packet_data) (message_t *this);
 	
+	/**
+	 * @brief Check if a message is encoded.
+	 *
+	 * Check if the packet is in a generated (and encrypted) form available
+	 * and can be passed down to the socket. If not, it has to be generated
+	 * first.
+	 *
+	 * @param this 		message_t object
+	 * @return			TRUE if encoded, FALSE if not
+	 */	
+	bool (*is_encoded) (message_t *this);
+	
 	
 	/**
 	 * @brief Destroys a message and all including objects.
@@ -364,13 +376,4 @@ message_t * message_create_from_packet(packet_t *packet);
  */
 message_t * message_create(void);
 
-/**
- * @brief Creates an message_t object of type reply containing a notify payload.
- *
- * @return message_t object
- *
- * @ingroup encoding
- */
-message_t *message_create_notify_reply(host_t *source, host_t *destination, exchange_type_t exchange_type, bool original_initiator,ike_sa_id_t *ike_sa_id,notify_message_type_t notify_type);
-
 #endif /*MESSAGE_H_*/

src/charon/queues/jobs/incoming_packet_job.c

@@ -89,15 +89,26 @@ static status_t execute(private_incoming_packet_job_t *this)
 						  message->get_minor_version(message));
 		if ((message->get_exchange_type(message) == IKE_SA_INIT) && (message->get_request(message)))
 		{
+			notify_payload_t *notify;
 			message_t *response;
+			host_t *src, *dst;
+			
 			message->get_ike_sa_id(message, &ike_sa_id);
 			ike_sa_id->switch_initiator(ike_sa_id);
-			response = message_create_notify_reply(message->get_destination(message),
-					message->get_source(message),
-					IKE_SA_INIT, FALSE, ike_sa_id,
-					INVALID_MAJOR_VERSION);
-			message->destroy(message);
-			ike_sa_id->destroy(ike_sa_id);
+			
+			response = message_create();
+			src = message->get_source(message);
+			dst = message->get_destination(message);
+			response->set_source(response, src->clone(src));
+			response->set_destination(response, dst->clone(dst));
+			response->set_exchange_type(response, IKE_SA_INIT);
+			response->set_request(response, FALSE);
+			response->set_message_id(response, 0);
+			response->set_ike_sa_id(response, ike_sa_id);
+			
+			notify = notify_payload_create_from_protocol_and_type(PROTO_NONE, INVALID_MAJOR_VERSION);
+			response->add_payload(response, (payload_t *)notify);
+			
 			status = response->generate(response, NULL, NULL, &packet);
 			if (status != SUCCESS)
 			{