1 /* 2 * Copyright (c) 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-ripng.c,v 1.15.2.2 2003/11/16 08:51:42 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 #ifdef WIN32 36 const struct in6_addr in6addr_any; /* :: */ 37 #endif /* WIN32 */ 38 39 #ifdef __MINGW32__ 40 int 41 IN6_ADDR_EQUAL(const struct in6_addr *a, const struct in6_addr *b) 42 { 43 return (memcmp(a, b, sizeof(struct in6_addr)) == 0); 44 } 45 46 #define IN6_IS_ADDR_UNSPECIFIED(a) IN6_ADDR_EQUAL((a), &in6addr_any) 47 48 #endif /* __MINGW32__ */ 49 50 #include <stdio.h> 51 52 #include "route6d.h" 53 #include "interface.h" 54 #include "addrtoname.h" 55 #include "extract.h" 56 57 static int 58 rip6_entry_print(register const struct netinfo6 *ni, int metric) 59 { 60 int l; 61 l = printf("%s/%d", ip6addr_string(&ni->rip6_dest), ni->rip6_plen); 62 if (ni->rip6_tag) 63 l += printf(" [%d]", EXTRACT_16BITS(&ni->rip6_tag)); 64 if (metric) 65 l += printf(" (%d)", ni->rip6_metric); 66 return l; 67 } 68 69 void 70 ripng_print(const u_char *dat, unsigned int length) 71 { 72 register const struct rip6 *rp = (struct rip6 *)dat; 73 register const struct netinfo6 *ni; 74 register u_int amt; 75 register u_int i; 76 int j; 77 int trunc; 78 79 if (snapend < dat) 80 return; 81 amt = snapend - dat; 82 i = min(length, amt); 83 if (i < (sizeof(struct rip6) - sizeof(struct netinfo6))) 84 return; 85 i -= (sizeof(struct rip6) - sizeof(struct netinfo6)); 86 87 switch (rp->rip6_cmd) { 88 89 case RIP6_REQUEST: 90 j = length / sizeof(*ni); 91 if (j == 1 92 && rp->rip6_nets->rip6_metric == HOPCNT_INFINITY6 93 && IN6_IS_ADDR_UNSPECIFIED(&rp->rip6_nets->rip6_dest)) { 94 printf(" ripng-req dump"); 95 break; 96 } 97 if (j * sizeof(*ni) != length - 4) 98 printf(" ripng-req %d[%u]:", j, length); 99 else 100 printf(" ripng-req %d:", j); 101 trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i); 102 for (ni = rp->rip6_nets; i >= sizeof(*ni); 103 i -= sizeof(*ni), ++ni) { 104 if (vflag > 1) 105 printf("\n\t"); 106 else 107 printf(" "); 108 rip6_entry_print(ni, 0); 109 } 110 break; 111 case RIP6_RESPONSE: 112 j = length / sizeof(*ni); 113 if (j * sizeof(*ni) != length - 4) 114 printf(" ripng-resp %d[%u]:", j, length); 115 else 116 printf(" ripng-resp %d:", j); 117 trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i); 118 for (ni = rp->rip6_nets; i >= sizeof(*ni); 119 i -= sizeof(*ni), ++ni) { 120 if (vflag > 1) 121 printf("\n\t"); 122 else 123 printf(" "); 124 rip6_entry_print(ni, ni->rip6_metric); 125 } 126 if (trunc) 127 printf("[|ripng]"); 128 break; 129 default: 130 printf(" ripng-%d ?? %u", rp->rip6_cmd, length); 131 break; 132 } 133 if (rp->rip6_vers != RIP6_VERSION) 134 printf(" [vers %d]", rp->rip6_vers); 135 } 136 #endif /* INET6 */ 137