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 #include <sys/cdefs.h> 25 #ifndef lint 26 #if 0 27 static const char rcsid[] _U_ = 28 "@(#) Header: /tcpdump/master/tcpdump/print-ah.c,v 1.22 2003-11-19 00:36:06 guy Exp (LBL)"; 29 #else 30 __RCSID("$NetBSD: print-ah.c,v 1.2 2010/12/05 05:11:30 christos Exp $"); 31 #endif 32 #endif 33 34 #ifdef HAVE_CONFIG_H 35 #include "config.h" 36 #endif 37 38 #include <tcpdump-stdinc.h> 39 40 #include <stdio.h> 41 42 #include "ah.h" 43 44 #include "interface.h" 45 #include "addrtoname.h" 46 #include "extract.h" 47 48 int 49 ah_print(register const u_char *bp) 50 { 51 register const struct ah *ah; 52 register const u_char *ep; 53 int sumlen; 54 u_int32_t spi; 55 56 ah = (const struct ah *)bp; 57 ep = snapend; /* 'ep' points to the end of available data. */ 58 59 TCHECK(*ah); 60 61 sumlen = ah->ah_len << 2; 62 spi = EXTRACT_32BITS(&ah->ah_spi); 63 64 printf("AH(spi=0x%08x", spi); 65 if (vflag) 66 printf(",sumlen=%d", sumlen); 67 printf(",seq=0x%x", EXTRACT_32BITS(ah + 1)); 68 if (bp + sizeof(struct ah) + sumlen > ep) 69 fputs("[truncated]", stdout); 70 fputs("): ", stdout); 71 72 return sizeof(struct ah) + sumlen; 73 trunc: 74 fputs("[|AH]", stdout); 75 return -1; 76 } 77