1 files changed, 100 insertions, 0 deletions
diff --git a/src/lib/protocols/warcraft3.c b/src/lib/protocols/warcraft3.c
new file mode 100644
index 000000000..7780dbf6e
--- /dev/null
+++ b/src/lib/protocols/warcraft3.c
@@ -0,0 +1,100 @@
+/*
+ * warcraft3.c
+ *
+ * Copyright (C) 2009-2011 by ipoque GmbH
+ * Copyright (C) 2011-15 - ntop.org
+ *
+ * This file is part of nDPI, an open source deep packet inspection
+ * library based on the OpenDPI and PACE technology by ipoque GmbH
+ *
+ * nDPI 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.
+ *
+ * nDPI 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 nDPI.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+
+
+/* include files */
+
+#include "ndpi_protocols.h"
+#ifdef NDPI_PROTOCOL_WARCRAFT3
+
+static void ndpi_int_warcraft3_add_connection(struct ndpi_detection_module_struct
+					      *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_WARCRAFT3, NDPI_REAL_PROTOCOL);
+}
+
+void ndpi_search_warcraft3(struct ndpi_detection_module_struct
+			   *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &flow->packet;
+	
+  //      struct ndpi_id_struct         *src=ndpi_struct->src;
+  //      struct ndpi_id_struct         *dst=ndpi_struct->dst;
+
+  u_int32_t l; /* 
+		  Leave it as u_int32_t because otherwise 'u_int16_t temp' 
+		  might overflood it and thus generate an infinite loop
+	       */
+
+  NDPI_LOG(NDPI_PROTOCOL_WARCRAFT3, ndpi_struct, NDPI_LOG_DEBUG, "search WARCRAFT3\n");
+
+
+  if (flow->packet_counter == 1 && packet->payload_packet_len == 1 && packet->payload[0] == 0x01) {
+    NDPI_LOG(NDPI_PROTOCOL_WARCRAFT3, ndpi_struct, NDPI_LOG_DEBUG, "maybe warcraft3: packet_len == 1\n");
+    return;
+  } else if (packet->payload_packet_len >= 4 && (packet->payload[0] == 0xf7 || packet->payload[0] == 0xff)) {
+
+    NDPI_LOG(NDPI_PROTOCOL_WARCRAFT3, ndpi_struct, NDPI_LOG_DEBUG, "packet_payload begins with 0xf7 or 0xff\n");
+
+    l = packet->payload[2] + (packet->payload[3] << 8);	// similar to ntohs
+
+    NDPI_LOG(NDPI_PROTOCOL_WARCRAFT3, ndpi_struct, NDPI_LOG_DEBUG, "l = %u \n", l);
+
+    while (l <= (packet->payload_packet_len - 4)) {
+      if (packet->payload[l] == 0xf7) {
+	u_int16_t temp = (packet->payload[l + 2 + 1] << 8) + packet->payload[l + 2];
+	NDPI_LOG(NDPI_PROTOCOL_WARCRAFT3, ndpi_struct, NDPI_LOG_DEBUG, "another f7 visited.\n");
+
+	if((temp <= 2) || (temp > 1500)) {
+	  NDPI_LOG(NDPI_PROTOCOL_WARCRAFT3, ndpi_struct, NDPI_LOG_DEBUG, "break\n");
+	  break;
+	} else {
+	  l += temp;
+	  NDPI_LOG(NDPI_PROTOCOL_WARCRAFT3, ndpi_struct, NDPI_LOG_DEBUG, "l = %u \n", l);
+	}
+      } else {
+	NDPI_LOG(NDPI_PROTOCOL_WARCRAFT3, ndpi_struct, NDPI_LOG_DEBUG, "break\n");
+	break;
+      }
+    }
+
+    if (l == packet->payload_packet_len) {
+      NDPI_LOG(NDPI_PROTOCOL_WARCRAFT3, ndpi_struct, NDPI_LOG_DEBUG, "maybe WARCRAFT3\n");
+      NDPI_LOG(NDPI_PROTOCOL_WARCRAFT3, ndpi_struct, NDPI_LOG_DEBUG, "flow->packet_counter = %u \n",
+	       flow->packet_counter);
+      if (flow->packet_counter > 2) {
+	NDPI_LOG(NDPI_PROTOCOL_WARCRAFT3, ndpi_struct, NDPI_LOG_DEBUG, "detected WARCRAFT3\n");
+	ndpi_int_warcraft3_add_connection(ndpi_struct, flow);
+	return;
+      }
+      return;
+    }
+  }
+
+  NDPI_LOG(NDPI_PROTOCOL_WARCRAFT3, ndpi_struct, NDPI_LOG_DEBUG, "no warcraft3 detected.\n");
+  NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_WARCRAFT3);
+}
+
+#endif