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 1.18 2001/06/15 22:17:34 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 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 TCHECK(dp->ip6r_segleft); 66 67 printf("srcrt (len=%d", dp->ip6r_len); /*)*/ 68 printf(", type=%d", dp->ip6r_type); 69 printf(", segleft=%d", dp->ip6r_segleft); 70 71 switch (dp->ip6r_type) { 72 #ifndef IPV6_RTHDR_TYPE_0 73 #define IPV6_RTHDR_TYPE_0 0 74 #endif 75 case IPV6_RTHDR_TYPE_0: 76 dp0 = (struct ip6_rthdr0 *)dp; 77 78 TCHECK(dp0->ip6r0_reserved); 79 if (dp0->ip6r0_reserved || vflag) { 80 printf(", rsv=0x%0x", 81 (u_int32_t)ntohl(dp0->ip6r0_reserved)); 82 } 83 84 if (len % 2 == 1) 85 goto trunc; 86 len >>= 1; 87 addr = &dp0->ip6r0_addr[0]; 88 for (i = 0; i < len; i++) { 89 if ((u_char *)(addr + 1) > ep) 90 goto trunc; 91 92 printf(", [%d]%s", i, ip6addr_string(addr)); 93 addr++; 94 } 95 /*(*/ 96 printf(") "); 97 return((dp0->ip6r0_len + 1) << 3); 98 break; 99 default: 100 goto trunc; 101 break; 102 } 103 104 trunc: 105 fputs("[|srcrt]", stdout); 106 return 65535; /* XXX */ 107 } 108 #endif /* INET6 */ 109