/*

 * dofus.c

 *

 * Copyright (C) 2009-11 - ipoque GmbH

 * Copyright (C) 2011-25 - 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 "ndpi_protocol_ids.h"

#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_DOFUS

#include "ndpi_api.h"

#include "ndpi_private.h"

static void ndpi_dofus_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)

{

  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_DOFUS, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);

  NDPI_LOG_INFO(ndpi_struct, "found dofus\n");

}

static void ndpi_search_dofus(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)

{

  struct ndpi_packet_struct *packet = &ndpi_struct->packet;

  NDPI_LOG_DBG(ndpi_struct, "search dofus\n");

  /* Dofus 3 */

  if(ntohs(flow->c_port) == 5555 || ntohs(flow->s_port) == 5555) {

    if(packet->payload_packet_len > 3 &&

       packet->payload[0] + 1 == packet->payload_packet_len &&

       packet->payload[1] == 0x0a &&

       packet->payload[2] + 2 ==  packet->payload[0]) {

      ndpi_dofus_add_connection(ndpi_struct, flow);

    }

  }

  NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow);

}

void init_dofus_dissector(struct ndpi_detection_module_struct *ndpi_struct)

{

  register_dissector("Dofus", ndpi_struct,

                     ndpi_search_dofus,

                     NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,

                     1, NDPI_PROTOCOL_DOFUS);

}