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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
/*
* armagetron.c
*
* Copyright (C) 2009-2011 by ipoque GmbH
* Copyright (C) 2011-15 - 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 files */
#include "ndpi_protocols.h"
#ifdef NDPI_PROTOCOL_ARMAGETRON
static void ndpi_int_armagetron_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_ARMAGETRON);
}
void ndpi_search_armagetron_udp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
// struct ndpi_id_struct *src=ndpi_struct->src;
// struct ndpi_id_struct *dst=ndpi_struct->dst;
NDPI_LOG(NDPI_PROTOCOL_ARMAGETRON, ndpi_struct, NDPI_LOG_DEBUG, "search armagetron.\n");
if (packet->payload_packet_len > 10) {
/* login request */
if (get_u_int32_t(packet->payload, 0) == htonl(0x000b0000)) {
const u_int16_t dataLength = ntohs(get_u_int16_t(packet->payload, 4));
if (dataLength == 0 || dataLength * 2 + 8 != packet->payload_packet_len)
goto exclude;
if (get_u_int16_t(packet->payload, 6) == htons(0x0008)
&& get_u_int16_t(packet->payload, packet->payload_packet_len - 2) == 0) {
NDPI_LOG(NDPI_PROTOCOL_ARMAGETRON, ndpi_struct, NDPI_LOG_DEBUG, "detected armagetron.\n");
ndpi_int_armagetron_add_connection(ndpi_struct, flow);
return;
}
}
/* sync_msg */
if (packet->payload_packet_len == 16 && get_u_int16_t(packet->payload, 0) == htons(0x001c)
&& get_u_int16_t(packet->payload, 2) != 0) {
const u_int16_t dataLength = ntohs(get_u_int16_t(packet->payload, 4));
if (dataLength != 4)
goto exclude;
if (get_u_int32_t(packet->payload, 6) == htonl(0x00000500) && get_u_int32_t(packet->payload, 6 + 4) == htonl(0x00010000)
&& get_u_int16_t(packet->payload, packet->payload_packet_len - 2) == 0) {
NDPI_LOG(NDPI_PROTOCOL_ARMAGETRON, ndpi_struct, NDPI_LOG_DEBUG, "detected armagetron.\n");
ndpi_int_armagetron_add_connection(ndpi_struct, flow);
return;
}
}
/* net_sync combination */
if (packet->payload_packet_len > 50 && get_u_int16_t(packet->payload, 0) == htons(0x0018)
&& get_u_int16_t(packet->payload, 2) != 0) {
u_int16_t val;
const u_int16_t dataLength = ntohs(get_u_int16_t(packet->payload, 4));
if (dataLength == 0 || dataLength * 2 + 8 > packet->payload_packet_len)
goto exclude;
val = get_u_int16_t(packet->payload, 6 + 2);
if (val == get_u_int16_t(packet->payload, 6 + 6)) {
val = ntohs(get_u_int16_t(packet->payload, 6 + 8));
if ((6 + 10 + val + 4) < packet->payload_packet_len
&& (get_u_int32_t(packet->payload, 6 + 10 + val) == htonl(0x00010000)
|| get_u_int32_t(packet->payload, 6 + 10 + val) == htonl(0x00000001))
&& get_u_int16_t(packet->payload, packet->payload_packet_len - 2) == 0) {
NDPI_LOG(NDPI_PROTOCOL_ARMAGETRON, ndpi_struct, NDPI_LOG_DEBUG, "detected armagetron.\n");
ndpi_int_armagetron_add_connection(ndpi_struct, flow);
return;
}
}
}
}
exclude:
NDPI_LOG(NDPI_PROTOCOL_ARMAGETRON, ndpi_struct, NDPI_LOG_DEBUG, "exclude armagetron.\n");
NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_ARMAGETRON);
}
#endif
|