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