printpacket6.c revision 170268
1160996Ssam/* $FreeBSD: head/contrib/ipfilter/lib/printpacket6.c 170268 2007-06-04 02:54:36Z darrenr $ */ 2160996Ssam 3160996Ssam/* 4160996Ssam * Copyright (C) 2002 by Darren Reed. 5160996Ssam * 6160996Ssam * See the IPFILTER.LICENCE file for details on licencing. 7160996Ssam * 8 * $Id: printpacket6.c,v 1.3.4.1 2006/06/16 17:21:13 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 */ 17void printpacket6(ip) 18struct ip *ip; 19{ 20 u_char *buf, p; 21 u_short plen, *addrs; 22 tcphdr_t *tcp; 23 u_32_t flow; 24 25 buf = (u_char *)ip; 26 tcp = (tcphdr_t *)(buf + 40); 27 p = buf[6]; 28 flow = ntohl(*(u_32_t *)buf); 29 flow &= 0xfffff; 30 plen = ntohs(*((u_short *)buf +2)); 31 addrs = (u_short *)buf + 4; 32 33 printf("ip6/%d %d %#x %d", buf[0] & 0xf, plen, flow, p); 34 printf(" %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 35 ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]), 36 ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]), 37 ntohs(addrs[6]), ntohs(addrs[7])); 38 if (plen >= 4) 39 if (p == IPPROTO_TCP || p == IPPROTO_UDP) 40 (void)printf(",%d", ntohs(tcp->th_sport)); 41 printf(" >"); 42 addrs += 8; 43 printf(" %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 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_dport)); 50 putchar('\n'); 51} 52