Add a return value to simaka_message_t.generate()

src/libsimaka/simaka_message.c

@@ -599,8 +599,8 @@ METHOD(simaka_message_t, verify, bool,
 	return TRUE;
 }
 
-METHOD(simaka_message_t, generate, chunk_t,
-	private_simaka_message_t *this, chunk_t sigdata)
+METHOD(simaka_message_t, generate, bool,
+	private_simaka_message_t *this, chunk_t sigdata, chunk_t *gen)
 {
 	/* buffers large enough for messages we generate */
 	char out_buf[1024], encr_buf[512];
@@ -827,7 +827,8 @@ METHOD(simaka_message_t, generate, chunk_t,
 
 	call_hook(this, FALSE, FALSE);
 
-	return chunk_clone(out);
+	*gen = chunk_clone(out);
+	return TRUE;
 }
 
 METHOD(simaka_message_t, destroy, void,

src/libsimaka/simaka_message.h

@@ -236,9 +236,10 @@ struct simaka_message_t {
 	 * Generate a message, optionally encrypt attributes and create a MAC.
 	 *
 	 * @param sigdata	additional data to include in signature, if any
-	 * @return			allocated data of generated message
+	 * @param gen		allocated generated data, if successful
+	 * @return			TRUE if successful
 	 */
-	chunk_t (*generate)(simaka_message_t *this, chunk_t sigdata);
+	bool (*generate)(simaka_message_t *this, chunk_t sigdata, chunk_t *gen);
 
 	/**
 	 * Destroy a simaka_message_t.