1 /* $NetBSD: print-ah.c,v 1.4 1996/05/20 00:41:16 fvdl Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that: (1) source code distributions 9 * retain the above copyright notice and this paragraph in its entirety, (2) 10 * distributions including binary code include the above copyright notice and 11 * this paragraph in its entirety in the documentation or other materials 12 * provided with the distribution, and (3) all advertising materials mentioning 13 * features or use of this software display the following acknowledgement: 14 * ``This product includes software developed by the University of California, 15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 16 * the University nor the names of its contributors may be used to endorse 17 * or promote products derived from this software without specific prior 18 * written permission. 19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 22 */ 23 24 #ifndef lint 25 static const char rcsid[] _U_ = 26 "@(#) $Header: /tcpdump/master/tcpdump/print-ah.c,v 1.22 2003/11/19 00:36:06 guy Exp $ (LBL)"; 27 #endif 28 29 #ifdef HAVE_CONFIG_H 30 #include "config.h" 31 #endif 32 33 #include <tcpdump-stdinc.h> 34 35 #include <stdio.h> 36 37 #include "ah.h" 38 39 #include "interface.h" 40 #include "addrtoname.h" 41 #include "extract.h" 42 43 int 44 ah_print(register const u_char *bp) 45 { 46 register const struct ah *ah; 47 register const u_char *ep; 48 int sumlen; 49 u_int32_t spi; 50 51 ah = (const struct ah *)bp; 52 ep = snapend; /* 'ep' points to the end of available data. */ 53 54 TCHECK(*ah); 55 56 sumlen = ah->ah_len << 2; 57 spi = EXTRACT_32BITS(&ah->ah_spi); 58 59 printf("AH(spi=0x%08x", spi); 60 if (vflag) 61 printf(",sumlen=%d", sumlen); 62 printf(",seq=0x%x", EXTRACT_32BITS(ah + 1)); 63 if (bp + sizeof(struct ah) + sumlen > ep) 64 fputs("[truncated]", stdout); 65 fputs("): ", stdout); 66 67 return sizeof(struct ah) + sumlen; 68 trunc: 69 fputs("[|AH]", stdout); 70 return -1; 71 } 72