1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/*
* glbp.c
*
* Gateway Load Balancing Protocol
*
* Copyright (C) 2025 - ntop.org
* Copyright (C) 2025 - V.G <v.gavrilov@securitycode.ru>
*
* 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_GLBP
#include "ndpi_api.h"
#include "ndpi_private.h"
#define GLBP_PORT 3222 /* IANA registered */
static void ndpi_int_glbp_add_connection(struct ndpi_detection_module_struct * const ndpi_struct,
struct ndpi_flow_struct * const flow)
{
NDPI_LOG_INFO(ndpi_struct, "found GLBP\n");
ndpi_set_detected_protocol(ndpi_struct, flow,
NDPI_PROTOCOL_GLBP, NDPI_PROTOCOL_UNKNOWN,
NDPI_CONFIDENCE_DPI);
}
static void ndpi_search_glbp(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct const * const packet = &ndpi_struct->packet;
NDPI_LOG_DBG(ndpi_struct, "search GLBP\n");
if (packet->payload_packet_len < 12) {
goto exclude;
}
if ((packet->udp->source != htons(GLBP_PORT)) ||
(packet->udp->dest != htons(GLBP_PORT)))
{
goto exclude;
}
if ((packet->payload[0] > 1) ||
(ntohs(get_u_int16_t(packet->payload, 2)) > 1023))
{
goto exclude;
}
ndpi_int_glbp_add_connection(ndpi_struct, flow);
return;
exclude:
NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow);
}
void init_glbp_dissector(struct ndpi_detection_module_struct *ndpi_struct)
{
register_dissector("GLBP", ndpi_struct,
ndpi_search_glbp,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
1, NDPI_PROTOCOL_GLBP);
}
|