/*

 * gearup_booster.c

 *

 * Copyright (C) 2011-25 - ntop.org

 *

 * 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_GEARUP_BOOSTER

#include "ndpi_api.h"

#include "ndpi_private.h"

static void ndpi_int_gearup_booster_add_connection(struct ndpi_detection_module_struct * const ndpi_struct,

                                                   struct ndpi_flow_struct * const flow)

{

  NDPI_LOG_INFO(ndpi_struct, "found GearUP Booster\n");

  ndpi_set_detected_protocol(ndpi_struct, flow,

                             NDPI_PROTOCOL_GEARUP_BOOSTER,

                             NDPI_PROTOCOL_UNKNOWN,

                             NDPI_CONFIDENCE_DPI);

}

static void ndpi_search_gearup_booster(struct ndpi_detection_module_struct *ndpi_struct,

                                       struct ndpi_flow_struct *flow)

{

  struct ndpi_packet_struct * const packet = &ndpi_struct->packet;

  NDPI_LOG_DBG(ndpi_struct, "search GearUP Booster\n");

  if (packet->udp->source != htons(9999) && packet->udp->dest != htons(9999))

  {

    NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow);

    return;

  }

  if (flow->packet_counter == 1)

  {

    if (packet->packet_direction != 0 || packet->udp->dest != htons(9999))

    {

      NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow);

      return;

    }

  }

  if (packet->payload_packet_len == 4)

  {

    // mobile version

    if (ntohl(get_u_int32_t(packet->payload, 0)) == 0x00000000)

    {

      NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow);

      return;

    }

  } else if (packet->payload_packet_len == 8)

  {

    // desktop version

    if (ntohl(get_u_int32_t(packet->payload, 0)) == 0x00000000 ||

        packet->payload[7] != 0x00 || packet->payload[6] != 0x00 || packet->payload[5] != 0x00)

    {

      NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow);

      return;

    }

  } else {

    NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow);

    return;

  }

  ndpi_int_gearup_booster_add_connection(ndpi_struct, flow);

}

void init_gearup_booster_dissector(struct ndpi_detection_module_struct *ndpi_struct)

{

  register_dissector("GeaUP_Booster", ndpi_struct,

                     ndpi_search_gearup_booster,

                     NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,

                     1, NDPI_PROTOCOL_GEARUP_BOOSTER);

}