ike: Make check for known payloads depend on IKE version

src/libcharon/encoding/message.c

@@ -2475,7 +2475,7 @@ static status_t decrypt_payloads(private_message_t *this, keymat_t *keymat)
 			was_encrypted = "encrypted fragment payload";
 		}
 
-		if (payload_is_known(type) && !was_encrypted &&
+		if (payload_is_known(type, this->major_version) && !was_encrypted &&
 			!is_connectivity_check(this, payload) &&
 			this->exchange_type != AGGRESSIVE)
 		{

src/libcharon/encoding/payloads/payload.c

@@ -266,12 +266,16 @@ payload_t *payload_create(payload_type_t type)
 /**
  * See header.
  */
-bool payload_is_known(payload_type_t type)
+bool payload_is_known(payload_type_t type, u_int8_t maj_ver)
 {
 	if (type == PL_HEADER)
 	{
 		return TRUE;
 	}
+	switch (maj_ver)
+	{
+		case 0:
+		case IKEV1_MAJOR_VERSION:
 			if (type >= PLV1_SECURITY_ASSOCIATION && type <= PLV1_CONFIGURATION)
 			{
 				return TRUE;
@@ -280,6 +284,16 @@ bool payload_is_known(payload_type_t type)
 			{
 				return TRUE;
 			}
+			if (type >= PLV1_NAT_D_DRAFT_00_03 && type <= PLV1_FRAGMENT)
+			{
+				return TRUE;
+			}
+			if (maj_ver)
+			{
+				break;
+			}
+			/* fall-through */
+		case IKEV2_MAJOR_VERSION:
 			if (type >= PLV2_SECURITY_ASSOCIATION && type <= PLV2_EAP)
 			{
 				return TRUE;
@@ -294,9 +308,9 @@ bool payload_is_known(payload_type_t type)
 				return TRUE;
 			}
 #endif
-	if (type >= PLV1_NAT_D_DRAFT_00_03 && type <= PLV1_FRAGMENT)
+			break;
-	{
+		default:
-		return TRUE;
+			break;
 	}
 	return FALSE;
 }

src/libcharon/encoding/payloads/payload.h

@@ -405,9 +405,10 @@ payload_t *payload_create(payload_type_t type);
  * Check if a specific payload is implemented, or handled as unknown payload.
  *
  * @param type		type of the payload to check
+ * @param maj_ver	major IKE version (use 0 to skip version check)
  * @return			FALSE if payload type handled as unknown payload
  */
-bool payload_is_known(payload_type_t type);
+bool payload_is_known(payload_type_t type, u_int8_t maj_ver);
 
 /**
  * Get the value field in a payload using encoding rules.

src/libcharon/sa/ikev2/task_manager_v2.c

@@ -1170,7 +1170,7 @@ static status_t parse_message(private_task_manager_t *this, message_t *msg)
 		{
 			unknown = (unknown_payload_t*)payload;
 			type = payload->get_type(payload);
-			if (!payload_is_known(type) &&
+			if (!payload_is_known(type, msg->get_major_version(msg)) &&
 				unknown->is_critical(unknown))
 			{
 				DBG1(DBG_ENC, "payload type %N is not supported, "