Rebase dev 2.0

decoders/lpi_plus/libprotoident/udp/lpi_cod.cc

@@ -0,0 +1,170 @@
+/*
+ *
+ * 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_cod_payload(uint32_t payload, uint32_t len) {
+
+        if (len == 0)
+                return true;
+        if (!MATCH(payload, 0xff, 0xff, 0xff, 0xff))
+                return false;
+        return true;
+
+}
+
+
+static inline bool match_callofduty(lpi_data_t *data, lpi_module_t *mod UNUSED) {
+
+	if (!match_cod_payload(data->payload[0], data->payload_len[0]))
+                return false;
+        if (!match_cod_payload(data->payload[1], data->payload_len[1]))
+                return false;
+
+        /* One packet is always 14 or 15 bytes, the other is usually much 
+         * larger */
+        if (data->payload_len[0] == 14 || data->payload_len[0] == 15) {
+                if (data->payload_len[1] == 0)
+                        return true;
+                if (data->payload_len[1] > 100)
+                        return true;
+        }
+
+        if (data->payload_len[1] == 14 || data->payload_len[1] == 15) {
+                if (data->payload_len[0] == 0)
+                        return true;
+                if (data->payload_len[0] > 100)
+                        return true;
+        }
+
+        /* 13 is also observed */
+        if (data->payload_len[0] == 13) {
+                if (data->payload_len[1] > 880)
+                        return true;
+                if (data->payload_len[1] >= 225 && data->payload_len[1] <= 250)
+                        return true;
+        }
+
+        /* Other packet size combos */
+
+        /* 74 seems to be common on port 20800 which is associated with
+         * COD:WaW
+         */
+        if (data->payload_len[0] == 74) {
+                if (data->payload_len[1] == 0)
+                        return true;
+        }
+
+        if (data->payload_len[1] == 74) {
+                if (data->payload_len[0] == 0)
+                        return true;
+        }
+
+        if (data->payload_len[0] == 45) {
+                if (data->payload_len[1] == 0)
+                        return true;
+        }
+
+        if (data->payload_len[1] == 45) {
+                if (data->payload_len[0] == 0)
+                        return true;
+        }
+
+        if (data->payload_len[0] == 53) {
+                if (data->payload_len[1] < 30)
+                        return false;
+                if (data->payload_len[1] > 33)
+                        return false;
+                return true;
+        }
+        if (data->payload_len[1] == 53) {
+                if (data->payload_len[0] < 30)
+                        return false;
+                if (data->payload_len[0] > 33)
+                        return false;
+                return true;
+        }
+
+        if (data->payload_len[0] == 16) {
+                if (data->payload_len[1] == 18)
+                        return true;
+                if (data->payload_len[1] == 16)
+                        return true;
+                if (data->payload_len[1] == 13)
+                        return true;
+                if (data->payload_len[1] == 0) {
+                	return true;
+		}
+        }
+
+        if (data->payload_len[1] == 16) {
+                if (data->payload_len[0] == 18)
+                        return true;
+                if (data->payload_len[0] == 16)
+                        return true;
+                if (data->payload_len[0] == 13)
+                        return true;
+                if (data->payload_len[0] == 0) {
+                        return true;
+                }
+        }
+
+        if (data->payload_len[0] >= 16 && data->payload_len[0] <= 19) {
+                if (data->payload_len[1] < 40)
+                        return false;
+                if (data->payload_len[1] > 44)
+                        return false;
+                return true;
+        }
+
+        if (data->payload_len[1] >= 16 && data->payload_len[1] <= 19) {
+                if (data->payload_len[0] < 40)
+                        return false;
+                if (data->payload_len[0] > 44)
+                        return false;
+                return true;
+        }
+
+
+	return false;
+}
+
+static lpi_module_t lpi_callofduty = {
+	LPI_PROTO_UDP_COD,
+	LPI_CATEGORY_GAMING,
+	"Call_of_Duty",
+	60,	/* Must be lower priority than XLSP */
+	match_callofduty
+};
+
+void register_callofduty(LPIModuleMap *mod_map) {
+	register_protocol(&lpi_callofduty, mod_map);
+}
+