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/*
* mikrotik.c
*
* Copyright (C) 2012-24 - 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_MIKROTIK
#include "ndpi_api.h"
#include "ndpi_private.h"
/* ********************************* */
static void ndpi_search_mikrotik(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 MIKROTIK\n");
if((packet->iph && (packet->iph->daddr== 0xFFFFFFFF))
|| (packet->iphv6 && (ntohl(packet->iphv6->ip6_dst.u6_addr.u6_addr32[0]) == 0xFF020000 /* ff02:: */))
) {
if(ntohs(packet->udp->dest) == 5678) {
const u_int8_t *payload;
u_int16_t offset;
if (packet->payload_packet_len < 8) {
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
return;
} else {
offset = 4;
payload = packet->payload;
}
while((offset+4) < packet->payload_packet_len) {
u_int16_t m_type = ((u_int16_t)payload[offset] << 8) + payload[offset+1];
u_int16_t m_len = ((u_int16_t)payload[offset+2] << 8) + payload[offset+3];
// printf("%d\n", m_type);
if((4+m_len+offset) < packet->payload_packet_len) {
switch(m_type) {
case 1 /* MAC Address */:
if(m_len == 6)
memcpy(flow->protos.mikrotik.mac_addr, &payload[offset+4], m_len);
break;
case 5 /* Identity */:
snprintf(flow->protos.mikrotik.identity, sizeof(flow->protos.mikrotik.identity),
"%.*s", m_len, &payload[offset+4]);
break;
case 7 /* Version */:
snprintf(flow->protos.mikrotik.version, sizeof(flow->protos.mikrotik.version),
"%.*s", m_len, &payload[offset+4]);
break;
case 10: /* Uptime */
if(m_len == 4)
flow->protos.mikrotik.uptime = ntohl(*((u_int32_t*)&payload[offset+4]));
break;
case 11: /* Software-ID */
snprintf(flow->protos.mikrotik.sw_id, sizeof(flow->protos.mikrotik.sw_id),
"%.*s", m_len, &payload[offset+4]);
break;
case 12: /* Board */
snprintf(flow->protos.mikrotik.board, sizeof(flow->protos.mikrotik.board),
"%.*s", m_len, &payload[offset+4]);
break;
case 15: /* IPv6 */
if(m_len == 16)
memcpy(&flow->protos.mikrotik.ipv6_addr, &payload[offset+4], m_len);
break;
case 16: /* Interface Name */
snprintf(flow->protos.mikrotik.iface_name, sizeof(flow->protos.mikrotik.iface_name),
"%.*s", m_len, &payload[offset+4]);
break;
case 14: /* IPv4 */
if(m_len == 4)
flow->protos.mikrotik.ipv4_addr = ntohl(*((u_int32_t*)&payload[offset+4]));
break;
}
offset += 4 + m_len;
} else
break;
} /* while */
ndpi_set_detected_protocol(ndpi_struct, flow,
NDPI_PROTOCOL_MIKROTIK,
NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
}
} else
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
/* ********************************* */
void init_mikrotik_dissector(struct ndpi_detection_module_struct *ndpi_struct,
u_int32_t *id) {
ndpi_set_bitmask_protocol_detection("MIKROTIK", ndpi_struct,
*id, NDPI_PROTOCOL_MIKROTIK, ndpi_search_mikrotik,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
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