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[] = 24 "@(#) $Header: /tcpdump/master/tcpdump/print-rt6.c,v 1.17 2000/12/13 07:57:05 itojun Exp $"; 25 #endif 26 27 #ifdef HAVE_CONFIG_H 28 #include "config.h" 29 #endif 30 31 #ifdef INET6 32 33 #include <sys/param.h> 34 #include <sys/time.h> 35 #include <sys/types.h> 36 #include <sys/socket.h> 37 38 39 #include <netinet/in.h> 40 41 #include <stdio.h> 42 43 #include "ip6.h" 44 45 #include "interface.h" 46 #include "addrtoname.h" 47 48 int 49 rt6_print(register const u_char *bp, register const u_char *bp2) 50 { 51 register const struct ip6_rthdr *dp; 52 register const struct ip6_rthdr0 *dp0; 53 register const struct ip6_hdr *ip; 54 register const u_char *ep; 55 int i, len; 56 register const struct in6_addr *addr; 57 58 dp = (struct ip6_rthdr *)bp; 59 ip = (struct ip6_hdr *)bp2; 60 len = dp->ip6r_len; 61 62 /* 'ep' points to the end of available data. */ 63 ep = snapend; 64 65 #if 0 66 printf("%s > %s: ", 67 ip6addr_string(&ip->ip6_src), 68 ip6addr_string(&ip->ip6_dst)); 69 #endif 70 71 TCHECK(dp->ip6r_segleft); 72 73 printf("srcrt (len=%d", dp->ip6r_len); /*)*/ 74 printf(", type=%d", dp->ip6r_type); 75 printf(", segleft=%d", dp->ip6r_segleft); 76 77 switch (dp->ip6r_type) { 78 #ifndef IPV6_RTHDR_TYPE_0 79 #define IPV6_RTHDR_TYPE_0 0 80 #endif 81 case IPV6_RTHDR_TYPE_0: 82 dp0 = (struct ip6_rthdr0 *)dp; 83 84 TCHECK(dp0->ip6r0_reserved); 85 if (dp0->ip6r0_reserved || vflag) { 86 printf(", rsv=0x%0x", 87 (u_int32_t)ntohl(dp0->ip6r0_reserved)); 88 } 89 90 if (len % 2 == 1) 91 goto trunc; 92 len >>= 1; 93 addr = &dp0->ip6r0_addr[0]; 94 for (i = 0; i < len; i++) { 95 if ((u_char *)(addr + 1) > ep) 96 goto trunc; 97 98 printf(", [%d]%s", i, ip6addr_string(addr)); 99 addr++; 100 } 101 /*(*/ 102 printf(") "); 103 return((dp0->ip6r0_len + 1) << 3); 104 break; 105 default: 106 goto trunc; 107 break; 108 } 109 110 trunc: 111 fputs("[|srcrt]", stdout); 112 return 65535; /* XXX */ 113 } 114 #endif /* INET6 */ 115