1 /* $NetBSD: printpacket6.c,v 1.2 2012/07/22 14:27:37 darrenr Exp $ */
2
3 /*
4 * Copyright (C) 2012 by Darren Reed.
5 *
6 * See the IPFILTER.LICENCE file for details on licencing.
7 *
8 * Id: printpacket6.c,v 1.1.1.2 2012/07/22 13:44:42 darrenr Exp $
9 */
10
11 #include "ipf.h"
12
13 /*
14 * This is meant to work without the IPv6 header files being present or
15 * the inet_ntop() library.
16 */
17 void
printpacket6(dir,m)18 printpacket6(dir, m)
19 int dir;
20 mb_t *m;
21 {
22 u_char *buf, p;
23 u_short plen, *addrs;
24 tcphdr_t *tcp;
25 u_32_t flow;
26
27 buf = (u_char *)m->mb_data;
28 tcp = (tcphdr_t *)(buf + 40);
29 p = buf[6];
30 flow = ntohl(*(u_32_t *)buf);
31 flow &= 0xfffff;
32 plen = ntohs(*((u_short *)buf +2));
33 addrs = (u_short *)buf + 4;
34
35 if (dir)
36 PRINTF("> ");
37 else
38 PRINTF("< ");
39
40 PRINTF("%s ", IFNAME(m->mb_ifp));
41
42 PRINTF("ip6/%d %d %#x %d", buf[0] & 0xf, plen, flow, p);
43 PRINTF(" %x:%x:%x:%x:%x:%x:%x:%x",
44 ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]),
45 ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]),
46 ntohs(addrs[6]), ntohs(addrs[7]));
47 if (plen >= 4)
48 if (p == IPPROTO_TCP || p == IPPROTO_UDP)
49 (void)PRINTF(",%d", ntohs(tcp->th_sport));
50 PRINTF(" >");
51 addrs += 8;
52 PRINTF(" %x:%x:%x:%x:%x:%x:%x:%x",
53 ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]),
54 ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]),
55 ntohs(addrs[6]), ntohs(addrs[7]));
56 if (plen >= 4)
57 if (p == IPPROTO_TCP || p == IPPROTO_UDP)
58 PRINTF(",%d", ntohs(tcp->th_dport));
59 putchar('\n');
60 }
61