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5f0e6fc7 RM |
1 | /* |
2 | * ++Copyright++ 1985, 1988, 1993 | |
3 | * - | |
4 | * Copyright (c) 1985, 1988, 1993 | |
5 | * The Regents of the University of California. All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions and the following disclaimer. | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
5f0e6fc7 RM |
15 | * 4. Neither the name of the University nor the names of its contributors |
16 | * may be used to endorse or promote products derived from this software | |
17 | * without specific prior written permission. | |
18 | * | |
19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
29 | * SUCH DAMAGE. | |
30 | * - | |
31 | * Portions Copyright (c) 1993 by Digital Equipment Corporation. | |
32 | * | |
33 | * Permission to use, copy, modify, and distribute this software for any | |
34 | * purpose with or without fee is hereby granted, provided that the above | |
35 | * copyright notice and this permission notice appear in all copies, and that | |
36 | * the name of Digital Equipment Corporation not be used in advertising or | |
37 | * publicity pertaining to distribution of the document or software without | |
38 | * specific, written prior permission. | |
39 | * | |
40 | * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL | |
41 | * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES | |
42 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT | |
43 | * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL | |
44 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR | |
45 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS | |
46 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
47 | * SOFTWARE. | |
48 | * - | |
49 | * --Copyright-- | |
50 | */ | |
51 | ||
52 | #include <arpa/nameser.h> | |
53 | #include <sys/socket.h> | |
54 | ||
55 | typedef union { | |
56 | int32_t al; | |
57 | char ac; | |
58 | } align; | |
59 | ||
51e4196f | 60 | static int |
5f0e6fc7 RM |
61 | map_v4v6_hostent (struct hostent *hp, char **bpp, int *lenp) |
62 | { | |
63 | char **ap; | |
64 | ||
65 | if (hp->h_addrtype != AF_INET || hp->h_length != INADDRSZ) | |
51e4196f | 66 | return 0; |
5f0e6fc7 RM |
67 | hp->h_addrtype = AF_INET6; |
68 | hp->h_length = IN6ADDRSZ; | |
69 | for (ap = hp->h_addr_list; *ap; ap++) | |
70 | { | |
71 | int i = sizeof (align) - ((u_long) *bpp % sizeof (align)); | |
72 | ||
73 | if (*lenp < (i + IN6ADDRSZ)) | |
51e4196f AS |
74 | /* Out of memory. */ |
75 | return 1; | |
5f0e6fc7 RM |
76 | *bpp += i; |
77 | *lenp -= i; | |
78 | map_v4v6_address (*ap, *bpp); | |
79 | *ap = *bpp; | |
80 | *bpp += IN6ADDRSZ; | |
81 | *lenp -= IN6ADDRSZ; | |
82 | } | |
51e4196f | 83 | return 0; |
5f0e6fc7 | 84 | } |