/*
 * ookla.c
 *
 * Copyright (C) 2018 - 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_OOKLA

#include "ndpi_api.h"


void ndpi_search_ookla(struct ndpi_detection_module_struct* ndpi_struct, struct ndpi_flow_struct* flow) {
  struct ndpi_packet_struct* packet = &flow->packet;
  u_int32_t addr = 0;

  NDPI_LOG_DBG(ndpi_struct, "Ookla detection\n");

  if(packet->tcp->source == htons(8080))
    addr = packet->iph->saddr;
  else if(packet->tcp->dest == htons(8080))
    addr = packet->iph->daddr;
  else
    goto ookla_exclude;

  if(ndpi_struct->ookla_cache != NULL) {
    u_int16_t dummy;
    
    if(ndpi_lru_find_cache(ndpi_struct->ookla_cache, addr, &dummy, 0 /* Don't remove it as it can be used for other connections */)) {
      NDPI_LOG_INFO(ndpi_struct, "found ookla tcp connection\n");
      ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_OOKLA, NDPI_PROTOCOL_UNKNOWN);
      return;
    }
  }

 ookla_exclude:
  NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}

void init_ookla_dissector(struct ndpi_detection_module_struct *ndpi_struct,
			  u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask) {
  ndpi_set_bitmask_protocol_detection("Ookla", ndpi_struct, detection_bitmask, *id,
				      NDPI_PROTOCOL_OOKLA,
				      ndpi_search_ookla,
				      NDPI_SELECTION_BITMASK_PROTOCOL_TCP,
				      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
				      ADD_TO_DETECTION_BITMASK);

  *id += 1;
}