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/*
* lotus_notes.c
*
* Copyright (C) 2012-15 - 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_api.h"
#ifdef NDPI_PROTOCOL_LOTUS_NOTES
/* ************************************ */
static void ndpi_check_lotus_notes(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
// const u_int8_t *packet_payload = packet->payload;
u_int32_t payload_len = packet->payload_packet_len;
if(packet->tcp != NULL) {
flow->l4.tcp.lotus_notes_packet_id++;
#if 0
printf("[lotus_notes_packet_id: %u][len=%u][%02X %02X %02X %02X %02X %02X %02X %02X]\n",
flow->l4.tcp.lotus_notes_packet_id, payload_len,
packet->payload[6] & 0xFF,
packet->payload[7] & 0xFF,
packet->payload[8] & 0xFF,
packet->payload[9] & 0xFF,
packet->payload[10] & 0xFF,
packet->payload[11] & 0xFF,
packet->payload[12] & 0xFF,
packet->payload[13] & 0xFF
);
#endif
if((flow->l4.tcp.lotus_notes_packet_id == 1)
/* We have seen the 3-way handshake */
&& flow->l4.tcp.seen_syn
&& flow->l4.tcp.seen_syn_ack
&& flow->l4.tcp.seen_ack) {
if(payload_len > 16) {
char lotus_notes_header[] = { 0x00, 0x00, 0x02, 0x00, 0x00, 0x40, 0x02, 0x0F };
if(memcmp(&packet->payload[6], lotus_notes_header, sizeof(lotus_notes_header)) == 0) {
NDPI_LOG(NDPI_PROTOCOL_LOTUS_NOTES, ndpi_struct, NDPI_LOG_DEBUG, "Found lotus_notes.\n");
ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_LOTUS_NOTES/* , NDPI_REAL_PROTOCOL */);
}
return;
}
NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_LOTUS_NOTES);
} else if(flow->l4.tcp.lotus_notes_packet_id > 3)
NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_LOTUS_NOTES);
return;
}
}
void ndpi_search_lotus_notes(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
NDPI_LOG(NDPI_PROTOCOL_LOTUS_NOTES, ndpi_struct, NDPI_LOG_DEBUG, "lotus_notes detection...\n");
/* skip marked packets */
if(packet->detected_protocol_stack[0] != NDPI_PROTOCOL_LOTUS_NOTES)
ndpi_check_lotus_notes(ndpi_struct, flow);
}
#endif
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