✨ feat(integration decoders): http and glimpse_detector

compile pass, todo test

decoders/glimpse_detector/libprotoident/tcp/lpi_webex_stun.cc

@@ -0,0 +1,87 @@
+/*
+ *
+ * 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"
+
+/* Bastardization of the STUN protocol used by Cisco Webex */
+
+static inline bool match_webex_req(uint32_t payload, uint32_t len) {
+
+        if (len == 28 && MATCH(payload, 0x00, 0x03, 0x00, 0x08)) {
+                return true;
+        }
+
+        return false;
+}
+
+static inline bool match_webex_resp(uint32_t payload, uint32_t len) {
+
+        if (MATCH(payload, 0x01, 0x13, 0x00, ANY)) {
+                if ((ntohl(payload) & 0x0000ffff) == len - 20)
+                        return true;
+        }
+
+        return false;
+}
+
+static inline bool match_webex_stun(lpi_data_t *data, lpi_module_t *mod UNUSED) {
+
+        if (data->server_port != 80 && data->client_port != 80) {
+                return false;
+        }
+
+        if (match_webex_req(data->payload[0], data->payload_len[0])) {
+                if (match_webex_resp(data->payload[1], data->payload_len[1])) {
+                        return true;
+                }
+        }
+
+        if (match_webex_req(data->payload[1], data->payload_len[1])) {
+                if (match_webex_resp(data->payload[0], data->payload_len[0])) {
+                        return true;
+                }
+        }
+
+
+	return false;
+}
+
+static lpi_module_t lpi_webex_stun = {
+	LPI_PROTO_WEBEX_STUN,
+	LPI_CATEGORY_TUNNELLING,
+	"WebexSTUN",
+	140,
+	match_webex_stun
+};
+
+void register_webex_stun(LPIModuleMap *mod_map) {
+	register_protocol(&lpi_webex_stun, mod_map);
+}
+