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[] = 24 "@(#) $Header: /tcpdump/master/tcpdump/print-ripng.c,v 1.10 2001/11/16 08:59:22 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 #include <netinet/in.h> 39 40 #include <errno.h> 41 #include <stdio.h> 42 43 #include "route6d.h" 44 #include "interface.h" 45 #include "addrtoname.h" 46 47 static int 48 rip6_entry_print(register const struct netinfo6 *ni, int metric) 49 { 50 int l; 51 l = printf("%s/%d", ip6addr_string(&ni->rip6_dest), ni->rip6_plen); 52 if (ni->rip6_tag) 53 l += printf(" [%d]", ntohs(ni->rip6_tag)); 54 if (metric) 55 l += printf(" (%d)", ni->rip6_metric); 56 return l; 57 } 58 59 void 60 ripng_print(const u_char *dat, unsigned int length) 61 { 62 register const struct rip6 *rp = (struct rip6 *)dat; 63 register const struct netinfo6 *ni; 64 register int amt = snapend - dat; 65 register int i = min(length, amt) - 66 (sizeof(struct rip6) - sizeof(struct netinfo6)); 67 int j; 68 int trunc; 69 70 if (i < 0) 71 return; 72 73 switch (rp->rip6_cmd) { 74 75 case RIP6_REQUEST: 76 j = length / sizeof(*ni); 77 if (j == 1 78 && rp->rip6_nets->rip6_metric == HOPCNT_INFINITY6 79 && IN6_IS_ADDR_UNSPECIFIED(&rp->rip6_nets->rip6_dest)) { 80 printf(" ripng-req dump"); 81 break; 82 } 83 if (j * sizeof(*ni) != length - 4) 84 printf(" ripng-req %d[%u]:", j, length); 85 else 86 printf(" ripng-req %d:", j); 87 trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i); 88 for (ni = rp->rip6_nets; (i -= sizeof(*ni)) >= 0; ++ni) { 89 if (vflag > 1) 90 printf("\n\t"); 91 else 92 printf(" "); 93 rip6_entry_print(ni, 0); 94 } 95 break; 96 case RIP6_RESPONSE: 97 j = length / sizeof(*ni); 98 if (j * sizeof(*ni) != length - 4) 99 printf(" ripng-resp %d[%u]:", j, length); 100 else 101 printf(" ripng-resp %d:", j); 102 trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i); 103 for (ni = rp->rip6_nets; (i -= sizeof(*ni)) >= 0; ++ni) { 104 if (vflag > 1) 105 printf("\n\t"); 106 else 107 printf(" "); 108 rip6_entry_print(ni, ni->rip6_metric); 109 } 110 if (trunc) 111 printf("[|ripng]"); 112 break; 113 default: 114 printf(" ripng-%d ?? %u", rp->rip6_cmd, length); 115 break; 116 } 117 if (rp->rip6_vers != RIP6_VERSION) 118 printf(" [vers %d]", rp->rip6_vers); 119 } 120 #endif /* INET6 */ 121