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/*
* lotus_notes.c
*
* Copyright (C) 2012-22 - 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_LOTUS_NOTES
#include "ndpi_api.h"
#include "ndpi_private.h"
/* ************************************ */
static void ndpi_check_lotus_notes(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &ndpi_struct->packet;
u_int32_t payload_len = packet->payload_packet_len;
flow->l4.tcp.lotus_notes_packet_id++;
if((flow->l4.tcp.lotus_notes_packet_id == 1) &&
ndpi_seen_flow_beginning(flow)) {
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_INFO(ndpi_struct, "found lotus_notes\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_LOTUS_NOTES, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
}
return;
}
} else if(flow->l4.tcp.lotus_notes_packet_id <= 3) return;
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
static void ndpi_search_lotus_notes(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
NDPI_LOG_DBG(ndpi_struct, "search lotus_notes\n");
ndpi_check_lotus_notes(ndpi_struct, flow);
}
void init_lotus_notes_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
{
ndpi_set_bitmask_protocol_detection("LotusNotes", ndpi_struct, *id,
NDPI_PROTOCOL_LOTUS_NOTES,
ndpi_search_lotus_notes,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
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