/src/ndpi/src/lib/protocols/dropbox.c

Source
/*
 * dropbox.c
 *
 * Copyright (C) 2012-18 by ntop.org
 *
 * This file is part of nDPI, an open source deep packet inspection
 * library based on the OpenDPI and PACE technology by ipoque GmbH
 *
 * 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_DROPBOX

#include "ndpi_api.h"
#include "ndpi_private.h"


#define DB_LSP_PORT 17500

static void ndpi_int_dropbox_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
              struct ndpi_flow_struct *flow) {
  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_DROPBOX, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
}


static void ndpi_check_dropbox(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;
  u_int16_t dropbox_port = htons(DB_LSP_PORT);

  if(packet->udp->dest == dropbox_port) {    
    if(packet->udp->source == dropbox_port) { 
      if(payload_len > 10) {
        if(ndpi_strnstr((const char *)packet->payload, "\"host_int\"", payload_len) != NULL) {     
          NDPI_LOG_INFO(ndpi_struct, "found dropbox\n");
          ndpi_int_dropbox_add_connection(ndpi_struct, flow);
          return;
  }
      }
    } else {
      if(payload_len > 10) {
        if(ndpi_strnstr((const char *)packet->payload, "Bus17Cmd", payload_len) != NULL) {     
          NDPI_LOG_INFO(ndpi_struct, "found dropbox\n");
          ndpi_int_dropbox_add_connection(ndpi_struct, flow);
          return;
  }
      }
    }
  }
  
  NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow);
}

static void ndpi_search_dropbox(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
  NDPI_LOG_DBG(ndpi_struct, "search dropbox\n");

  ndpi_check_dropbox(ndpi_struct, flow);
}


void init_dropbox_dissector(struct ndpi_detection_module_struct *ndpi_struct)
{
  register_dissector("DROPBOX", ndpi_struct,
                     ndpi_search_dropbox,
                     NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
                     1, NDPI_PROTOCOL_DROPBOX);
}

Line	Count	Source
1		/*
2		* dropbox.c
3		*
4		* Copyright (C) 2012-18 by ntop.org
5		*
6		* This file is part of nDPI, an open source deep packet inspection
7		* library based on the OpenDPI and PACE technology by ipoque GmbH
8		*
9		* nDPI is free software: you can redistribute it and/or modify
10		* it under the terms of the GNU Lesser General Public License as published by
11		* the Free Software Foundation, either version 3 of the License, or
12		* (at your option) any later version.
13		*
14		* nDPI is distributed in the hope that it will be useful,
15		* but WITHOUT ANY WARRANTY; without even the implied warranty of
16		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17		* GNU Lesser General Public License for more details.
18		*
19		* You should have received a copy of the GNU Lesser General Public License
20		* along with nDPI. If not, see <http://www.gnu.org/licenses/>.
21		*
22		*/
23
24		#include "ndpi_protocol_ids.h"
25
26		#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_DROPBOX
27
28		#include "ndpi_api.h"
29		#include "ndpi_private.h"
30
31
32		#define DB_LSP_PORT 17500
33
34		static void ndpi_int_dropbox_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
35	1.77k	struct ndpi_flow_struct *flow) {
36	1.77k	ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_DROPBOX, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
37	1.77k	}
38
39
40		static void ndpi_check_dropbox(struct ndpi_detection_module_struct ndpi_struct, struct ndpi_flow_struct flow)
41	618k	{
42	618k	struct ndpi_packet_struct *packet = &ndpi_struct->packet;
43	618k	u_int32_t payload_len = packet->payload_packet_len;
44	618k	u_int16_t dropbox_port = htons(DB_LSP_PORT);
45
46	618k	if(packet->udp->dest == dropbox_port) {
47	2.56k	if(packet->udp->source == dropbox_port) {
48	1.75k	if(payload_len > 10) {
49	1.74k	if(ndpi_strnstr((const char *)packet->payload, "\"host_int\"", payload_len) != NULL) {
50	1.38k	NDPI_LOG_INFO(ndpi_struct, "found dropbox\n");
51	1.38k	ndpi_int_dropbox_add_connection(ndpi_struct, flow);
52	1.38k	return;
53	1.38k	}
54	1.74k	}
55	1.75k	} else {
56	810	if(payload_len > 10) {
57	764	if(ndpi_strnstr((const char *)packet->payload, "Bus17Cmd", payload_len) != NULL) {
58	388	NDPI_LOG_INFO(ndpi_struct, "found dropbox\n");
59	388	ndpi_int_dropbox_add_connection(ndpi_struct, flow);
60	388	return;
61	388	}
62	764	}
63	810	}
64	2.56k	}
65
66	617k	NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow);
67	617k	}
68
69		static void ndpi_search_dropbox(struct ndpi_detection_module_struct ndpi_struct, struct ndpi_flow_struct flow)
70	618k	{
71	618k	NDPI_LOG_DBG(ndpi_struct, "search dropbox\n");
72
73	618k	ndpi_check_dropbox(ndpi_struct, flow);
74	618k	}
75
76
77		void init_dropbox_dissector(struct ndpi_detection_module_struct *ndpi_struct)
78	8.35k	{
79	8.35k	register_dissector("DROPBOX", ndpi_struct,
80	8.35k	ndpi_search_dropbox,
81	8.35k	NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
82	8.35k	1, NDPI_PROTOCOL_DROPBOX);
83	8.35k	}

Coverage Report

Created: 2025-11-12 06:55