✨ feat(integration decoders): http and glimpse_detector

compile pass, todo test

decoders/glimpse_detector/libprotoident/tcp/lpi_stun.cc

@@ -0,0 +1,90 @@
+/*
+ *
+ * Copyright (c) 2011-2016 The University of Waikato, Hamilton, New Zealand.
+ * All rights reserved.
+ *
+ * This file is part of libprotoident.
+ *
+ * This code has been developed by the University of Waikato WAND
+ * research group. For further information please see http://www.wand.net.nz/
+ *
+ * libprotoident is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * libprotoident is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ */
+
+#include <string.h>
+
+#include "libprotoident.h"
+#include "proto_manager.h"
+#include "proto_common.h"
+
+static inline bool match_stun_payload(uint32_t payload, uint32_t len) {
+        /* Bytes 3 and 4 are the Message Length - the STUN header */
+        if ((ntohl(payload) & 0x0000ffff) != len - 20)
+                return false;
+
+        if (MATCH(payload, 0x00, 0x01, ANY, ANY))
+                return true;
+        if (MATCH(payload, 0x01, 0x01, ANY, ANY))
+                return true;
+        if (MATCH(payload, 0x01, 0x11, ANY, ANY))
+                return true;
+        if (MATCH(payload, 0x00, 0x03, ANY, ANY))
+                return true;
+        if (MATCH(payload, 0x01, 0x03, ANY, ANY))
+                return true;
+        if (MATCH(payload, 0x01, 0x13, ANY, ANY))
+                return true;
+
+        return false;
+
+}
+
+
+static inline bool match_stun_tcp(lpi_data_t *data, lpi_module_t *mod UNUSED) {
+
+	/* Wouldn't have expected to see STUN over TCP, but sure we can 
+	 * match that. */
+
+	if (match_str_either(data, "RSP/"))
+		return true;
+
+        /* We can also see more conventional STUN payloads over TCP as well :/
+         */
+        if (data->server_port == 3478 || data->client_port == 3478) {
+                if (match_stun_payload(data->payload[0], data->payload_len[0]))
+                {
+                        if (match_stun_payload(data->payload[1],
+                                                data->payload_len[1])) {
+                                return true;
+                        }
+                }
+        }
+
+	return false;
+}
+
+static lpi_module_t lpi_stun_tcp = {
+	LPI_PROTO_STUN,
+	LPI_CATEGORY_NAT,
+	"STUN_TCP",
+	5,
+	match_stun_tcp
+};
+
+void register_stun_tcp(LPIModuleMap *mod_map) {
+	register_protocol(&lpi_stun_tcp, mod_map);
+}
+