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/*
* whoisdas.c
*
* Copyright (C) 2016 - 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_protocols.h"
#ifdef NDPI_PROTOCOL_WHOIS_DAS
void ndpi_search_whois_das(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
if(packet->tcp != NULL) {
u_int16_t sport = ntohs(packet->tcp->source), dport = ntohs(packet->tcp->dest);
if(((sport == 43) || (dport == 43)) || ((sport == 4343) || (dport == 4343))) {
if(packet->payload_packet_len > 0) {
u_int max_len = sizeof(flow->host_server_name) - 1;
u_int i, j;
for(i=strlen((const char *)flow->host_server_name), j=0; (i<max_len) && (j<packet->payload_packet_len); i++, j++) {
if((packet->payload[j] == '\n') || (packet->payload[j] == '\r')) break;
flow->host_server_name[i] = packet->payload[j];
}
flow->host_server_name[i] = '\0';
flow->server_id = ((sport == 43) || (sport == 4343)) ? flow->src : flow->dst;
NDPI_LOG(NDPI_PROTOCOL_WHOIS_DAS, ndpi_struct, NDPI_LOG_DEBUG, "[WHOIS/DAS] %s\n", flow->host_server_name);
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_WHOIS_DAS, NDPI_PROTOCOL_UNKNOWN);
return;
}
}
}
/* exclude WHOIS */
NDPI_LOG(NDPI_PROTOCOL_WHOIS_DAS, ndpi_struct, NDPI_LOG_TRACE, "WHOIS Excluded.\n");
NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_WHOIS_DAS);
}
void init_whois_das_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
{
ndpi_set_bitmask_protocol_detection("Whois-DAS", ndpi_struct, detection_bitmask, *id,
NDPI_PROTOCOL_WHOIS_DAS,
ndpi_search_whois_das,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
#endif
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