source: libpacketdump/ip_33.c @ 1de522d

4.0.1-hotfixescachetimestampsdevelopdpdk-ndagetsilivendag_formatrc-4.0.1rc-4.0.2rc-4.0.3rc-4.0.4ringdecrementfixringperformanceringtimestampfixes
Last change on this file since 1de522d was ee6e802, checked in by Shane Alcock <salcock@…>, 5 years ago

Updated copyright blurb on all source files

In some cases, this meant adding copyright blurbs to files that
had never had them before.

  • Property mode set to 100644
File size: 2.5 KB
Line 
1/*
2 *
3 * Copyright (c) 2007-2016 The University of Waikato, Hamilton, New Zealand.
4 * All rights reserved.
5 *
6 * This file is part of libtrace.
7 *
8 * This code has been developed by the University of Waikato WAND
9 * research group. For further information please see http://www.wand.net.nz/
10 *
11 * libtrace is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU Lesser General Public License as published by
13 * the Free Software Foundation; either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * libtrace is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19 * GNU Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public License
22 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
23 *
24 *
25 */
26/* DCCP */
27#include <stdio.h>
28#include <inttypes.h>
29#include <dlfcn.h>
30#include "libpacketdump.h"
31#include <netinet/tcp.h>
32#include <netinet/in.h>
33
34struct dccphdr {
35        uint16_t source;
36        uint16_t dest;
37        uint8_t type:4;
38        uint8_t ccval:4;
39        uint32_t seq:24;
40        uint8_t doff;
41        uint8_t ndp:4;
42        uint8_t cslen:4;
43        uint16_t check;
44};
45
46static char *dccp_types[]={
47        "DCCP-Request packet",
48        "DCCP-Response packet",
49        "DCCP-Data packet",
50        "DCCP-Ack packet",
51        "DCCP-DataAck packet",
52        "DCCP-CloseReq packet",
53        "DCCP-Close packet",
54        "DCCP-Reset packet",
55        "DCCP-Move packet",
56        };
57
58DLLEXPORT void decode(int link_type UNUSED,const char *packet,unsigned len)
59{
60        struct dccphdr *dccp = (struct dccphdr*)packet;
61        DISPLAYS(dccp, source," DCCP: Source %i");
62        DISPLAYS(dccp, dest," Dest %i");
63        if (len>4) {
64                printf("\n DCCP: Type %i",dccp->type);
65                if (dccp->type<sizeof(dccp_types)) {
66                        printf(" (%s)\n",dccp_types[dccp->type]);
67                } else {
68                        printf(" (Unknown)\n");
69                }
70                printf(" DCCP: CcVal %i\n",dccp->ccval);
71        }
72        else  {
73                printf("\n"); 
74                return;
75        }
76        if (len>7)
77                printf(" DCCP: Seq %u\n",dccp->seq); // htonwhat?
78        else
79                return;
80        DISPLAY(dccp, doff," DCCP: Dataoff: %i\n");
81        if (len>9)
82                printf(" DCCP: NDP %i CsLen: %i\n",dccp->ndp,dccp->cslen);
83        else {
84                return;
85        }
86        /* Should this be byteswapped??? */
87        DISPLAY(dccp, check," DCCP: Checksum: %i\n");
88        if (htons(dccp->source) < htons(dccp->dest)) 
89                decode_next(packet+dccp->doff*4,len-dccp->doff*4,"dccp",htons(dccp->source));
90        else
91                decode_next(packet+dccp->doff*4,len-dccp->doff*4,"dccp",htons(dccp->dest));
92        return;
93}
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