The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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_ = |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 24 | "@(#) $Header: /tcpdump/master/tcpdump/print-ripng.c,v 1.18 2005-01-04 00:15:54 guy Exp $"; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | #include <stdio.h> |
| 35 | |
| 36 | #include "route6d.h" |
| 37 | #include "interface.h" |
| 38 | #include "addrtoname.h" |
| 39 | #include "extract.h" |
| 40 | |
| 41 | #if !defined(IN6_IS_ADDR_UNSPECIFIED) && !defined(_MSC_VER) /* MSVC inline */ |
| 42 | static int IN6_IS_ADDR_UNSPECIFIED(const struct in6_addr *addr) |
| 43 | { |
| 44 | static const struct in6_addr in6addr_any; /* :: */ |
| 45 | return (memcmp(addr, &in6addr_any, sizeof(*addr)) == 0); |
| 46 | } |
| 47 | #endif |
| 48 | |
| 49 | static int |
| 50 | rip6_entry_print(register const struct netinfo6 *ni, int metric) |
| 51 | { |
| 52 | int l; |
| 53 | l = printf("%s/%d", ip6addr_string(&ni->rip6_dest), ni->rip6_plen); |
| 54 | if (ni->rip6_tag) |
| 55 | l += printf(" [%d]", EXTRACT_16BITS(&ni->rip6_tag)); |
| 56 | if (metric) |
| 57 | l += printf(" (%d)", ni->rip6_metric); |
| 58 | return l; |
| 59 | } |
| 60 | |
| 61 | void |
| 62 | ripng_print(const u_char *dat, unsigned int length) |
| 63 | { |
| 64 | register const struct rip6 *rp = (struct rip6 *)dat; |
| 65 | register const struct netinfo6 *ni; |
| 66 | register u_int amt; |
| 67 | register u_int i; |
| 68 | int j; |
| 69 | int trunc; |
| 70 | |
| 71 | if (snapend < dat) |
| 72 | return; |
| 73 | amt = snapend - dat; |
| 74 | i = min(length, amt); |
| 75 | if (i < (sizeof(struct rip6) - sizeof(struct netinfo6))) |
| 76 | return; |
| 77 | i -= (sizeof(struct rip6) - sizeof(struct netinfo6)); |
| 78 | |
| 79 | switch (rp->rip6_cmd) { |
| 80 | |
| 81 | case RIP6_REQUEST: |
| 82 | j = length / sizeof(*ni); |
| 83 | if (j == 1 |
| 84 | && rp->rip6_nets->rip6_metric == HOPCNT_INFINITY6 |
| 85 | && IN6_IS_ADDR_UNSPECIFIED(&rp->rip6_nets->rip6_dest)) { |
| 86 | printf(" ripng-req dump"); |
| 87 | break; |
| 88 | } |
| 89 | if (j * sizeof(*ni) != length - 4) |
| 90 | printf(" ripng-req %d[%u]:", j, length); |
| 91 | else |
| 92 | printf(" ripng-req %d:", j); |
| 93 | trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i); |
| 94 | for (ni = rp->rip6_nets; i >= sizeof(*ni); |
| 95 | i -= sizeof(*ni), ++ni) { |
| 96 | if (vflag > 1) |
| 97 | printf("\n\t"); |
| 98 | else |
| 99 | printf(" "); |
| 100 | rip6_entry_print(ni, 0); |
| 101 | } |
| 102 | break; |
| 103 | case RIP6_RESPONSE: |
| 104 | j = length / sizeof(*ni); |
| 105 | if (j * sizeof(*ni) != length - 4) |
| 106 | printf(" ripng-resp %d[%u]:", j, length); |
| 107 | else |
| 108 | printf(" ripng-resp %d:", j); |
| 109 | trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i); |
| 110 | for (ni = rp->rip6_nets; i >= sizeof(*ni); |
| 111 | i -= sizeof(*ni), ++ni) { |
| 112 | if (vflag > 1) |
| 113 | printf("\n\t"); |
| 114 | else |
| 115 | printf(" "); |
| 116 | rip6_entry_print(ni, ni->rip6_metric); |
| 117 | } |
| 118 | if (trunc) |
| 119 | printf("[|ripng]"); |
| 120 | break; |
| 121 | default: |
| 122 | printf(" ripng-%d ?? %u", rp->rip6_cmd, length); |
| 123 | break; |
| 124 | } |
| 125 | if (rp->rip6_vers != RIP6_VERSION) |
| 126 | printf(" [vers %d]", rp->rip6_vers); |
| 127 | } |
| 128 | #endif /* INET6 */ |