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2d571cd1 | 1 | /* Copyright (c) 1997, 2004, 2006 Free Software Foundation, Inc. |
51702635 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
51702635 UD |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
51702635 | 14 | |
41bdb6e2 AJ |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
51702635 UD |
19 | |
20 | #include <errno.h> | |
21 | #include <string.h> | |
22 | #include <rpcsvc/nis.h> | |
51702635 UD |
23 | |
24 | nis_name | |
25 | nis_domain_of_r (const_nis_name name, char *buffer, size_t buflen) | |
26 | { | |
27 | char *cptr; | |
28 | size_t cptr_len; | |
29 | ||
30 | if (buffer == NULL) | |
31 | { | |
2d571cd1 | 32 | erange: |
7440c23e | 33 | __set_errno (ERANGE); |
51702635 UD |
34 | return NULL; |
35 | } | |
36 | ||
37 | buffer[0] = '\0'; | |
38 | ||
39 | cptr = strchr (name, '.'); | |
40 | ||
41 | if (cptr == NULL) | |
42 | return buffer; | |
43 | ||
44 | ++cptr; | |
45 | cptr_len = strlen (cptr); | |
46 | ||
47 | if (cptr_len == 0) | |
2d571cd1 UD |
48 | { |
49 | if (buflen < 2) | |
50 | goto erange; | |
51 | return strcpy (buffer, "."); | |
52 | } | |
7440c23e UD |
53 | |
54 | if (__builtin_expect (cptr_len >= buflen, 0)) | |
51702635 | 55 | { |
7440c23e | 56 | __set_errno (ERANGE); |
51702635 UD |
57 | return NULL; |
58 | } | |
51702635 | 59 | |
7440c23e | 60 | return memcpy (buffer, cptr, cptr_len + 1); |
51702635 | 61 | } |
f23673fc | 62 | libnsl_hidden_def (nis_domain_of_r) |