lib/util/util_pw.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Safe versions of getpw* calls
   5
   6    Copyright (C) Andrew Bartlett 2002
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23
  24 static struct passwd *alloc_copy_passwd(TALLOC_CTX *mem_ctx,
  25                                         const struct passwd *from)
  26 {
  27         struct passwd *ret = talloc_zero(mem_ctx, struct passwd);
  28
  29         if (ret == NULL)
  30                 return NULL;
  31
  32         ret->pw_name = talloc_strdup(ret, from->pw_name);
  33         ret->pw_passwd = talloc_strdup(ret, from->pw_passwd);
  34         ret->pw_uid = from->pw_uid;
  35         ret->pw_gid = from->pw_gid;
  36         ret->pw_gecos = talloc_strdup(ret, from->pw_gecos);
  37         ret->pw_dir = talloc_strdup(ret, from->pw_dir);
  38         ret->pw_shell = talloc_strdup(ret, from->pw_shell);
  39
  40         return ret;
  41 }
  42
  43 struct passwd *getpwnam_alloc(TALLOC_CTX *mem_ctx, const char *name)
  44 {
  45         struct passwd *temp;
  46
  47         temp = sys_getpwnam(name);
  48
  49         if (!temp) {
  50 #if 0
  51                 if (errno == ENOMEM) {
  52                         /* what now? */
  53                 }
  54 #endif
  55                 return NULL;
  56         }
  57
  58         return alloc_copy_passwd(mem_ctx, temp);
  59 }
  60
  61 struct passwd *getpwuid_alloc(TALLOC_CTX *mem_ctx, uid_t uid)
  62 {
  63         struct passwd *temp;
  64
  65         temp = sys_getpwuid(uid);
  66
  67         if (!temp) {
  68 #if 0
  69                 if (errno == ENOMEM) {
  70                         /* what now? */
  71                 }
  72 #endif
  73                 return NULL;
  74         }
  75
  76         return alloc_copy_passwd(mem_ctx, temp);
  77 }