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2b778ceb | 1 | /* Copyright (c) 1997-2021 Free Software Foundation, Inc. |
51702635 | 2 | This file is part of the GNU C Library. |
51702635 UD |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
51702635 UD |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
51702635 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
51702635 UD |
17 | |
18 | #include <errno.h> | |
19 | #include <string.h> | |
20 | #include <rpcsvc/nis.h> | |
82f43dd2 | 21 | #include <shlib-compat.h> |
51702635 UD |
22 | |
23 | nis_name | |
24 | nis_domain_of_r (const_nis_name name, char *buffer, size_t buflen) | |
25 | { | |
26 | char *cptr; | |
27 | size_t cptr_len; | |
28 | ||
29 | if (buffer == NULL) | |
30 | { | |
2d571cd1 | 31 | erange: |
7440c23e | 32 | __set_errno (ERANGE); |
51702635 UD |
33 | return NULL; |
34 | } | |
35 | ||
36 | buffer[0] = '\0'; | |
37 | ||
38 | cptr = strchr (name, '.'); | |
39 | ||
40 | if (cptr == NULL) | |
41 | return buffer; | |
42 | ||
43 | ++cptr; | |
44 | cptr_len = strlen (cptr); | |
45 | ||
46 | if (cptr_len == 0) | |
2d571cd1 UD |
47 | { |
48 | if (buflen < 2) | |
49 | goto erange; | |
50 | return strcpy (buffer, "."); | |
51 | } | |
7440c23e | 52 | |
a1ffb40e | 53 | if (__glibc_unlikely (cptr_len >= buflen)) |
51702635 | 54 | { |
7440c23e | 55 | __set_errno (ERANGE); |
51702635 UD |
56 | return NULL; |
57 | } | |
51702635 | 58 | |
7440c23e | 59 | return memcpy (buffer, cptr, cptr_len + 1); |
51702635 | 60 | } |
1e4d83f6 | 61 | libnsl_hidden_nolink_def (nis_domain_of_r, GLIBC_2_1) |