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 1.3.2.1 2000/01/11 06:58:26 fenner 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 #include <net/if.h> 39 40 #include <netinet/in.h> 41 #include <netinet/if_ether.h> 42 #include <netinet/in_systm.h> 43 #include <netinet/ip.h> 44 #include <netinet/ip_icmp.h> 45 #include <netinet/ip_var.h> 46 #include <netinet/udp.h> 47 #include <netinet/udp_var.h> 48 #include <netinet/tcp.h> 49 50 #include <stdio.h> 51 52 #include <netinet/ip6.h> 53 54 #include "interface.h" 55 #include "addrtoname.h" 56 57 int 58 rt6_print(register const u_char *bp, register const u_char *bp2) 59 { 60 register const struct ip6_rthdr *dp; 61 register const struct ip6_rthdr0 *dp0; 62 register const struct ip6_hdr *ip; 63 register const u_char *ep; 64 int i, len; 65 66 dp = (struct ip6_rthdr *)bp; 67 ip = (struct ip6_hdr *)bp2; 68 len = dp->ip6r_len; 69 70 /* 'ep' points to the end of avaible data. */ 71 ep = snapend; 72 73 printf("%s > %s: ", 74 ip6addr_string(&ip->ip6_src), 75 ip6addr_string(&ip->ip6_dst)); 76 77 TCHECK(dp->ip6r_segleft); 78 79 printf("srcrt (len=%d, ", dp->ip6r_len); 80 printf("type=%d, ", dp->ip6r_type); 81 printf("segleft=%d, ", dp->ip6r_segleft); 82 83 switch(dp->ip6r_type) { 84 case IPV6_RTHDR_TYPE_0: 85 dp0 = (struct ip6_rthdr0 *)dp; 86 87 TCHECK(dp0->ip6r0_reserved); 88 if (dp0->ip6r0_reserved || vflag) { 89 printf("rsv=0x%0x, ", 90 (u_int32_t)ntohl(dp0->ip6r0_reserved)); 91 } 92 93 if (len % 2 == 1) 94 goto trunc; 95 len >>= 1; 96 for (i = 0; i < len; i++) { 97 struct in6_addr *addr; 98 99 addr = ((struct in6_addr *)(dp0 + 1)) + i; 100 if ((u_char *)addr > ep - sizeof(*addr)) 101 goto trunc; 102 103 printf("[%d]%s", i, ip6addr_string((u_char *)addr)); 104 if (i != len - 1) 105 printf(", "); 106 107 } 108 printf(")"); 109 return((dp0->ip6r0_len + 1) << 3); 110 break; 111 default: 112 goto trunc; 113 break; 114 } 115 116 trunc: 117 fputs("[|srcrt]", stdout); 118 return 65535; /* XXX */ 119 } 120 #endif /* INET6 */ 121