| /* Copyright (c) 1997-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <string.h> |
| #include <rpcsvc/nis.h> |
| |
| nis_name |
| nis_domain_of_r (const_nis_name name, char *buffer, size_t buflen) |
| { |
| char *cptr; |
| size_t cptr_len; |
| |
| if (buffer == NULL) |
| { |
| erange: |
| __set_errno (ERANGE); |
| return NULL; |
| } |
| |
| buffer[0] = '\0'; |
| |
| cptr = strchr (name, '.'); |
| |
| if (cptr == NULL) |
| return buffer; |
| |
| ++cptr; |
| cptr_len = strlen (cptr); |
| |
| if (cptr_len == 0) |
| { |
| if (buflen < 2) |
| goto erange; |
| return strcpy (buffer, "."); |
| } |
| |
| if (__builtin_expect (cptr_len >= buflen, 0)) |
| { |
| __set_errno (ERANGE); |
| return NULL; |
| } |
| |
| return memcpy (buffer, cptr, cptr_len + 1); |
| } |
| libnsl_hidden_def (nis_domain_of_r) |
