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/*
* kakaotalk_voice.c
*
* Copyright (C) 2015-22 - ntop.org
*
* This module 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.
*
* This module 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.
* If not, see <http://www.gnu.org/licenses/>.
*
*/
/*
KakaoTalk (call only)
http://www.kakao.com/services/talk/voices
*/
#include "ndpi_protocol_ids.h"
#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_KAKAOTALK_VOICE
#include "ndpi_api.h"
#include "ndpi_private.h"
static void ndpi_search_kakaotalk_voice(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 kakaotalk_voice\n");
if(packet->iph
&& packet->udp
&& (packet->payload_packet_len >= 4)
) {
if((packet->payload[0] == 0x81)
|| (packet->payload[1] == 0xC8)
|| (packet->payload[2] == 0x00)
|| (packet->payload[3] == 0x0C)) {
/* Looks good so far */
/*
inetnum: 1.201.0.0 - 1.201.255.255
netname: KINXINC-KR
*/
if(((ntohl(packet->iph->saddr) & 0xFFFF0000 /* 255.255.0.0 */) == 0x01C90000 /* 1.201.0.0/16 */)
|| ((ntohl(packet->iph->daddr) & 0xFFFF0000 /* 255.255.0.0 */) == 0x01C90000 /* 1.201.0.0/16 */)) {
NDPI_LOG_INFO(ndpi_struct, "found kakaotalk_voice\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_KAKAOTALK_VOICE, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
return;
}
}
}
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
void init_kakaotalk_voice_dissector(struct ndpi_detection_module_struct *ndpi_struct,
u_int32_t *id)
{
ndpi_set_bitmask_protocol_detection("KakaoTalk_Voice", ndpi_struct, *id,
NDPI_PROTOCOL_KAKAOTALK_VOICE,
ndpi_search_kakaotalk_voice,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
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