1 | /* Expand compressed domain name to presentation format. |
2 | * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") |
3 | * Copyright (c) 1996,1999 by Internet Software Consortium. |
4 | * |
5 | * Permission to use, copy, modify, and distribute this software for any |
6 | * purpose with or without fee is hereby granted, provided that the above |
7 | * copyright notice and this permission notice appear in all copies. |
8 | * |
9 | * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES |
10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR |
12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
15 | * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
16 | */ |
17 | |
18 | #include <arpa/nameser.h> |
19 | #include <shlib-compat.h> |
20 | |
21 | /* Expand compressed domain name to presentation format. Returns the |
22 | number of bytes read out of `src', or -1 (with errno set). The |
23 | root domain is returned as ".", not "". */ |
24 | int |
25 | ___ns_name_uncompress (const unsigned char *msg, const unsigned char *eom, |
26 | const unsigned char *src, char *dst, size_t dstsiz) |
27 | { |
28 | unsigned char tmp[NS_MAXCDNAME]; |
29 | int n = __ns_name_unpack (msg, eom, src, tmp, sizeof tmp); |
30 | if (n < 0) |
31 | return -1; |
32 | if (__ns_name_ntop (tmp, dst, dstsiz) < 0) |
33 | return -1; |
34 | return n; |
35 | } |
36 | versioned_symbol (libc, ___ns_name_uncompress, ns_name_uncompress, |
37 | GLIBC_2_34); |
38 | versioned_symbol (libc, ___ns_name_uncompress, __ns_name_uncompress, |
39 | GLIBC_PRIVATE); |
40 | libc_hidden_ver (___ns_name_uncompress, __ns_name_uncompress) |
41 | |
42 | #if OTHER_SHLIB_COMPAT (libresolv, GLIBC_2_9, GLIBC_2_34) |
43 | compat_symbol (libresolv, ___ns_name_uncompress, ns_name_uncompress, |
44 | GLIBC_2_9); |
45 | #endif |
46 | |