1 |
|
|
/* $OpenBSD: print-rt6.c,v 1.6 2015/11/16 00:16:39 mmcc Exp $ */ |
2 |
|
|
|
3 |
|
|
|
4 |
|
|
/* |
5 |
|
|
* Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994 |
6 |
|
|
* The Regents of the University of California. All rights reserved. |
7 |
|
|
* |
8 |
|
|
* Redistribution and use in source and binary forms, with or without |
9 |
|
|
* modification, are permitted provided that: (1) source code distributions |
10 |
|
|
* retain the above copyright notice and this paragraph in its entirety, (2) |
11 |
|
|
* distributions including binary code include the above copyright notice and |
12 |
|
|
* this paragraph in its entirety in the documentation or other materials |
13 |
|
|
* provided with the distribution, and (3) all advertising materials mentioning |
14 |
|
|
* features or use of this software display the following acknowledgement: |
15 |
|
|
* ``This product includes software developed by the University of California, |
16 |
|
|
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
17 |
|
|
* the University nor the names of its contributors may be used to endorse |
18 |
|
|
* or promote products derived from this software without specific prior |
19 |
|
|
* written permission. |
20 |
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
21 |
|
|
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
22 |
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
23 |
|
|
*/ |
24 |
|
|
|
25 |
|
|
#ifdef INET6 |
26 |
|
|
|
27 |
|
|
#include <sys/time.h> |
28 |
|
|
#include <sys/types.h> |
29 |
|
|
#include <sys/socket.h> |
30 |
|
|
|
31 |
|
|
#include <net/if.h> |
32 |
|
|
|
33 |
|
|
#include <netinet/in.h> |
34 |
|
|
#include <netinet/if_ether.h> |
35 |
|
|
#include <netinet/ip.h> |
36 |
|
|
#include <netinet/ip_icmp.h> |
37 |
|
|
#include <netinet/ip_var.h> |
38 |
|
|
#include <netinet/udp.h> |
39 |
|
|
#include <netinet/udp_var.h> |
40 |
|
|
#include <netinet/tcp.h> |
41 |
|
|
|
42 |
|
|
#include <stdio.h> |
43 |
|
|
|
44 |
|
|
#include <netinet/ip6.h> |
45 |
|
|
|
46 |
|
|
#include "interface.h" |
47 |
|
|
#include "addrtoname.h" |
48 |
|
|
|
49 |
|
|
int |
50 |
|
|
rt6_print(const u_char *bp, const u_char *bp2) |
51 |
|
|
{ |
52 |
|
|
const struct ip6_rthdr *dp; |
53 |
|
|
const struct ip6_rthdr0 *dp0; |
54 |
|
|
const struct ip6_hdr *ip; |
55 |
|
|
const u_char *ep; |
56 |
|
|
int i, len; |
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 avaible data. */ |
63 |
|
|
ep = snapend; |
64 |
|
|
|
65 |
|
|
#if 0 |
66 |
|
|
printf("%s > %s: ", |
67 |
|
|
ip6addr_string(&ip->ip6_src), |
68 |
|
|
ip6addr_string(&ip->ip6_dst)); |
69 |
|
|
#endif |
70 |
|
|
|
71 |
|
|
TCHECK(dp->ip6r_segleft); |
72 |
|
|
|
73 |
|
|
printf("srcrt (len=%d, ", dp->ip6r_len); |
74 |
|
|
printf("type=%d, ", dp->ip6r_type); |
75 |
|
|
printf("segleft=%d", dp->ip6r_segleft); |
76 |
|
|
|
77 |
|
|
switch (dp->ip6r_type) { |
78 |
|
|
case IPV6_RTHDR_TYPE_0: |
79 |
|
|
dp0 = (struct ip6_rthdr0 *)dp; |
80 |
|
|
|
81 |
|
|
TCHECK(dp0->ip6r0_reserved); |
82 |
|
|
if (dp0->ip6r0_reserved || vflag) { |
83 |
|
|
printf(", rsv=0x%0x", |
84 |
|
|
(u_int32_t)ntohl(dp0->ip6r0_reserved)); |
85 |
|
|
} |
86 |
|
|
|
87 |
|
|
if (len % 2 == 1) |
88 |
|
|
goto trunc; |
89 |
|
|
len >>= 1; |
90 |
|
|
for (i = 0; i < len; i++) { |
91 |
|
|
struct in6_addr *addr; |
92 |
|
|
|
93 |
|
|
addr = ((struct in6_addr *)(dp0 + 1)) + i; |
94 |
|
|
if ((u_char *)addr > ep - sizeof(*addr)) |
95 |
|
|
goto trunc; |
96 |
|
|
|
97 |
|
|
printf(", [%d]%s", i, ip6addr_string((u_char *)addr)); |
98 |
|
|
} |
99 |
|
|
printf(")"); |
100 |
|
|
return((dp0->ip6r0_len + 1) << 3); |
101 |
|
|
default: |
102 |
|
|
if (bp + ((dp->ip6r_len + 1) << 3) > ep) |
103 |
|
|
goto trunc; |
104 |
|
|
printf(")"); |
105 |
|
|
return((dp->ip6r_len + 1) << 3); |
106 |
|
|
} |
107 |
|
|
|
108 |
|
|
trunc: |
109 |
|
|
fputs(", [|srcrt]", stdout); |
110 |
|
|
return 65535; /* XXX */ |
111 |
|
|
} |
112 |
|
|
#endif /* INET6 */ |