source: libpacketdump/ospf2_1.c @ 823d8e1

4.0.1-hotfixescachetimestampsdevelopdpdk-ndagetsilivendag_formatrc-4.0.1rc-4.0.2rc-4.0.3rc-4.0.4ringdecrementfixringperformanceringtimestampfixes
Last change on this file since 823d8e1 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: 2.4 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#include <sys/types.h>
27#include <sys/socket.h>
28#include <netinet/in.h>
29#include <stdio.h>
30#include <arpa/inet.h>
31#include "libpacketdump.h"
32
33
34DLLEXPORT void decode(int link_type UNUSED,const char *packet,unsigned len) {
35
36        libtrace_ospf_hello_v2_t *hello = (libtrace_ospf_hello_v2_t *)packet;
37        struct in_addr *neigh;
38
39        if (len < 4) 
40                return;
41        printf(" OSPF Hello: Network Mask %s\n", inet_ntoa(hello->mask));
42        if (len < 6)
43                return;
44
45        printf(" OSPF Hello: Interval %u ", ntohs(hello->interval));
46
47        if (len < 7) {
48                printf("\n");
49                return;
50        }
51
52        printf("Options ");
53
54        if (hello->hello_options.e_bit)
55                printf("E ");
56        if (hello->hello_options.mc_bit)
57                printf("MC ");
58        if (hello->hello_options.np_bit)
59                printf("N/P ");
60        if (hello->hello_options.ea_bit)
61                printf("EA ");
62        if (hello->hello_options.dc_bit)
63                printf("DC ");
64        printf("\n");
65
66        if (len < 8) 
67                return;
68
69        printf(" OSPF Hello: Priority %u ", hello->priority);
70       
71        if (len < 12) {
72                printf("\n");
73                return;
74        }
75
76        printf("Dead Interval %u\n", ntohl(hello->deadint));
77       
78        if (len < 16) 
79                return;
80
81        printf(" OSPF Hello: Designated Router %s\n", inet_ntoa(hello->designated));
82
83        if (len < 20)
84                return;
85
86        printf(" OSPF Hello: Backup Designated Router %s\n", inet_ntoa(hello->backup));
87
88        neigh = (struct in_addr *)(packet + sizeof(libtrace_ospf_hello_v2_t));
89        len -= sizeof(libtrace_ospf_hello_v2_t);
90        while (len >= 4) {
91                printf(" OSPF Hello: Neighbour %s\n", inet_ntoa(*neigh));
92                neigh++;
93                len -= sizeof(struct in_addr);
94        }
95
96
97
98        return;
99}
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