1 /* 2 * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994 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 #include <sys/cdefs.h> 23 #ifndef lint 24 #if 0 25 static const char rcsid[] _U_ = 26 "@(#) Header: /tcpdump/master/tcpdump/print-rt6.c,v 1.27 2005-04-20 22:34:57 guy Exp"; 27 #else 28 __RCSID("$NetBSD: print-rt6.c,v 1.2 2010/12/05 05:11:30 christos Exp $"); 29 #endif 30 #endif 31 32 #ifdef HAVE_CONFIG_H 33 #include "config.h" 34 #endif 35 36 #ifdef INET6 37 38 #include <tcpdump-stdinc.h> 39 40 #include <stdio.h> 41 42 #include "ip6.h" 43 44 #include "interface.h" 45 #include "addrtoname.h" 46 #include "extract.h" 47 48 int 49 rt6_print(register const u_char *bp, const u_char *bp2 _U_) 50 { 51 register const struct ip6_rthdr *dp; 52 register const struct ip6_rthdr0 *dp0; 53 register const u_char *ep; 54 int i, len; 55 register const struct in6_addr *addr; 56 57 dp = (struct ip6_rthdr *)bp; 58 len = dp->ip6r_len; 59 60 /* 'ep' points to the end of available data. */ 61 ep = snapend; 62 63 TCHECK(dp->ip6r_segleft); 64 65 printf("srcrt (len=%d", dp->ip6r_len); /*)*/ 66 printf(", type=%d", dp->ip6r_type); 67 printf(", segleft=%d", dp->ip6r_segleft); 68 69 switch (dp->ip6r_type) { 70 #ifndef IPV6_RTHDR_TYPE_0 71 #define IPV6_RTHDR_TYPE_0 0 72 #endif 73 #ifndef IPV6_RTHDR_TYPE_2 74 #define IPV6_RTHDR_TYPE_2 2 75 #endif 76 case IPV6_RTHDR_TYPE_0: 77 case IPV6_RTHDR_TYPE_2: /* Mobile IPv6 ID-20 */ 78 dp0 = (struct ip6_rthdr0 *)dp; 79 80 TCHECK(dp0->ip6r0_reserved); 81 if (dp0->ip6r0_reserved || vflag) { 82 printf(", rsv=0x%0x", 83 EXTRACT_32BITS(&dp0->ip6r0_reserved)); 84 } 85 86 if (len % 2 == 1) 87 goto trunc; 88 len >>= 1; 89 addr = &dp0->ip6r0_addr[0]; 90 for (i = 0; i < len; i++) { 91 if ((u_char *)(addr + 1) > ep) 92 goto trunc; 93 94 printf(", [%d]%s", i, ip6addr_string(addr)); 95 addr++; 96 } 97 /*(*/ 98 printf(") "); 99 return((dp0->ip6r0_len + 1) << 3); 100 break; 101 default: 102 goto trunc; 103 break; 104 } 105 106 trunc: 107 fputs("[|srcrt]", stdout); 108 return -1; 109 } 110 #endif /* INET6 */ 111