✨ feat(integration decoders): http and glimpse_detector

compile pass, todo test

decoders/glimpse_detector/libprotoident/tcp/lpi_dns.cc

@@ -0,0 +1,102 @@
+/*
+ *
+ * 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 bool match_length_single(uint32_t payload, uint32_t len) {
+
+        uint32_t statedlen;
+
+        if (len == 2) {
+                return true;
+        }
+
+        statedlen = (ntohl(payload) >> 16);
+
+        if (statedlen < 1280) {
+                if (statedlen != len - 2)
+                        return false;
+        }
+
+        return true;
+}
+
+static bool match_dns_tcp_length(lpi_data_t *data) {
+
+        uint32_t id0, id1;
+
+        if (data->payload_len[0] == 0 || data->payload_len[1] == 0)
+                return false;
+
+        if (data->server_port != 53 && data->client_port != 53)
+                return false;
+
+        if (!match_length_single(data->payload[0], data->payload_len[0]))
+                return false;
+
+        if (!match_length_single(data->payload[1], data->payload_len[1]))
+                return false;
+
+        if (data->payload_len[0] > 2 && data->payload_len[1] > 2) {
+
+                id0 = (ntohl(data->payload[0]) & 0xffff);
+                id1 = (ntohl(data->payload[1]) & 0xffff);
+
+                if (id0 != id1)
+                        return false;
+        }
+
+
+        return true;
+}
+
+
+static bool match_tcp_dns(lpi_data_t *data, lpi_module_t *mod UNUSED) {
+
+	if (match_dns(data))
+		return true;
+	if (match_dns_tcp_length(data))
+		return true;
+	
+	return false;
+
+}
+
+static lpi_module_t lpi_dns = {
+	LPI_PROTO_DNS,
+	LPI_CATEGORY_SERVICES,
+	"DNS_TCP",
+	6, 	/* Not a high certainty */
+	match_tcp_dns
+};
+
+void register_dns_tcp(LPIModuleMap *mod_map) {
+	register_protocol(&lpi_dns, mod_map);
+}