printpacket6.c revision 170268
1145519Sdarrenr/* $FreeBSD: head/contrib/ipfilter/lib/printpacket6.c 170268 2007-06-04 02:54:36Z darrenr $ */ 2145510Sdarrenr 3170268Sdarrenr/* 4170268Sdarrenr * Copyright (C) 2002 by Darren Reed. 5170268Sdarrenr * 6170268Sdarrenr * See the IPFILTER.LICENCE file for details on licencing. 7170268Sdarrenr * 8170268Sdarrenr * $Id: printpacket6.c,v 1.3.4.1 2006/06/16 17:21:13 darrenr Exp $ 9170268Sdarrenr */ 10170268Sdarrenr 11145510Sdarrenr#include "ipf.h" 12145510Sdarrenr 13145510Sdarrenr/* 14145510Sdarrenr * This is meant to work without the IPv6 header files being present or 15145510Sdarrenr * the inet_ntop() library. 16145510Sdarrenr */ 17145510Sdarrenrvoid printpacket6(ip) 18145510Sdarrenrstruct ip *ip; 19145510Sdarrenr{ 20145510Sdarrenr u_char *buf, p; 21145510Sdarrenr u_short plen, *addrs; 22145510Sdarrenr tcphdr_t *tcp; 23145510Sdarrenr u_32_t flow; 24145510Sdarrenr 25145510Sdarrenr buf = (u_char *)ip; 26145510Sdarrenr tcp = (tcphdr_t *)(buf + 40); 27145510Sdarrenr p = buf[6]; 28145510Sdarrenr flow = ntohl(*(u_32_t *)buf); 29145510Sdarrenr flow &= 0xfffff; 30145510Sdarrenr plen = ntohs(*((u_short *)buf +2)); 31145510Sdarrenr addrs = (u_short *)buf + 4; 32145510Sdarrenr 33145510Sdarrenr printf("ip6/%d %d %#x %d", buf[0] & 0xf, plen, flow, p); 34145510Sdarrenr printf(" %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 35145510Sdarrenr ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]), 36145510Sdarrenr ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]), 37145510Sdarrenr ntohs(addrs[6]), ntohs(addrs[7])); 38145510Sdarrenr if (plen >= 4) 39145510Sdarrenr if (p == IPPROTO_TCP || p == IPPROTO_UDP) 40145510Sdarrenr (void)printf(",%d", ntohs(tcp->th_sport)); 41145510Sdarrenr printf(" >"); 42145510Sdarrenr addrs += 8; 43145510Sdarrenr printf(" %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 44145510Sdarrenr ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]), 45145510Sdarrenr ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]), 46145510Sdarrenr ntohs(addrs[6]), ntohs(addrs[7])); 47145510Sdarrenr if (plen >= 4) 48145510Sdarrenr if (p == IPPROTO_TCP || p == IPPROTO_UDP) 49145510Sdarrenr (void)printf(",%d", ntohs(tcp->th_dport)); 50145510Sdarrenr putchar('\n'); 51145510Sdarrenr} 52