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
|
/* Copyright (C) 2011-2021 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/**
* \ingroup decode
*
* @{
*/
/**
* \file
*
* \author Eric Leblond <eric@regit.org>
*
* Decode SCTP
*/
#include "suricata-common.h"
#include "decode.h"
#include "decode-sctp.h"
#include "decode-events.h"
#include "util-validate.h"
#include "util-unittest.h"
#include "util-debug.h"
#include "util-optimize.h"
#include "flow.h"
static int DecodeSCTPPacket(ThreadVars *tv, Packet *p, const uint8_t *pkt, uint16_t len)
{
DEBUG_VALIDATE_BUG_ON(pkt == NULL);
if (unlikely(len < SCTP_HEADER_LEN)) {
ENGINE_SET_INVALID_EVENT(p, SCTP_PKT_TOO_SMALL);
return -1;
}
p->sctph = (SCTPHdr *)pkt;
SET_SCTP_SRC_PORT(p,&p->sp);
SET_SCTP_DST_PORT(p,&p->dp);
p->payload = (uint8_t *)pkt + sizeof(SCTPHdr);
p->payload_len = len - sizeof(SCTPHdr);
p->proto = IPPROTO_SCTP;
return 0;
}
int DecodeSCTP(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p,
const uint8_t *pkt, uint16_t len)
{
StatsIncr(tv, dtv->counter_sctp);
if (unlikely(DecodeSCTPPacket(tv, p,pkt,len) < 0)) {
CLEAR_SCTP_PACKET(p);
return TM_ECODE_FAILED;
}
#ifdef DEBUG
SCLogDebug("SCTP sp: %" PRIu32 " -> dp: %" PRIu32,
SCTP_GET_SRC_PORT(p), SCTP_GET_DST_PORT(p));
#endif
FlowSetupPacket(p);
return TM_ECODE_OK;
}
/**
* @}
*/
|
