print-enc.c revision 1.2
1/* 2 * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 */ 21 22#ifndef lint 23static const char rcsid[] = 24 "@(#) $Header: /usr/local/opengrok/home/cvs-mirror/mirrors/openbsd/src/usr.sbin/tcpdump/print-enc.c,v 1.2 1999/10/30 20:17:54 angelos Exp $ (LBL)"; 25#endif 26 27#include <sys/param.h> 28#include <sys/time.h> 29#include <sys/socket.h> 30#include <sys/file.h> 31#include <sys/ioctl.h> 32#include <sys/mbuf.h> 33 34#ifdef __STDC__ 35struct rtentry; 36#endif 37#include <net/if.h> 38#include <netinet/ip_ipsp.h> 39#include <net/if_enc.h> 40 41#include <netinet/in.h> 42#include <netinet/in_systm.h> 43#include <netinet/ip.h> 44 45#include <ctype.h> 46#include <netdb.h> 47#include <pcap.h> 48#include <signal.h> 49#include <stdio.h> 50 51#include "interface.h" 52#include "addrtoname.h" 53 54#define ENC_PRINT_TYPE(wh, xf, nam) \ 55 if ((wh) & (xf)) { \ 56 printf("%s%s", nam, (wh) == (xf) ? "): " : ","); \ 57 (wh) &= ~(xf); \ 58 } 59 60void 61enc_if_print(u_char *user, const struct pcap_pkthdr *h, 62 register const u_char *p) 63{ 64 register u_int length = h->len; 65 register u_int caplen = h->caplen; 66 int flags; 67 const struct ip *ip; 68 const struct enchdr *hdr; 69 70 ts_print(&h->ts); 71 72 if (caplen < ENC_HDRLEN) { 73 printf("[|enc]"); 74 goto out; 75 } 76 77 /* 78 * Some printers want to get back at the link level addresses, 79 * and/or check that they're not walking off the end of the packet. 80 * Rather than pass them all the way down, we set these globals. 81 */ 82 packetp = p; 83 snapend = p + caplen; 84 85 hdr = (struct enchdr *)p; 86 printf("SPI 0x%08x (", ntohl(hdr->spi)); 87 flags = hdr->flags; 88 ENC_PRINT_TYPE(flags, M_AUTH, "authentic"); 89 ENC_PRINT_TYPE(flags, M_CONF, "confidential"); 90 ENC_PRINT_TYPE(flags, M_TUNNEL, "tunnel"); 91 92 length -= ENC_HDRLEN; 93 ip = (struct ip *)(p + ENC_HDRLEN); 94 ip_print((const u_char *)ip, length); 95 96 if (xflag) 97 default_print((const u_char *)ip, caplen - ENC_HDRLEN); 98out: 99 putchar('\n'); 100} 101