lib/util/util_pw.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Safe versions of getpw* calls
   5
   6    Copyright (C) Andrew Tridgell 1992-1998
   7    Copyright (C) Jeremy Allison  1998-2005
   8    Copyright (C) Andrew Bartlett 2002
   9    Copyright (C) Timur Bakeyev        2005
  10    Copyright (C) Bjoern Jacke    2006-2007
  11
  12
  13    This program is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 3 of the License, or
  16    (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  25 */
  26
  27 #include "includes.h"
  28 #include "system/passwd.h"
  29 #include "lib/util/util_pw.h"
  30
  31 /**************************************************************************
  32  Wrappers for setpwent(), getpwent() and endpwent()
  33 ****************************************************************************/
  34
  35 void sys_setpwent(void)
  36 {
  37         setpwent();
  38 }
  39
  40 struct passwd *sys_getpwent(void)
  41 {
  42         return getpwent();
  43 }
  44
  45 void sys_endpwent(void)
  46 {
  47         endpwent();
  48 }
  49
  50 /**************************************************************************
  51  Wrappers for getpwnam(), getpwuid(), getgrnam(), getgrgid()
  52 ****************************************************************************/
  53
  54 struct passwd *sys_getpwnam(const char *name)
  55 {
  56         return getpwnam(name);
  57 }
  58
  59 struct passwd *sys_getpwuid(uid_t uid)
  60 {
  61         return getpwuid(uid);
  62 }
  63
  64 struct group *sys_getgrnam(const char *name)
  65 {
  66         return getgrnam(name);
  67 }
  68
  69 struct group *sys_getgrgid(gid_t gid)
  70 {
  71         return getgrgid(gid);
  72 }
  73
  74 struct passwd *tcopy_passwd(TALLOC_CTX *mem_ctx,
  75                             const struct passwd *from)
  76 {
  77         struct passwd *ret = talloc_zero(mem_ctx, struct passwd);
  78
  79         if (ret == NULL)
  80                 return NULL;
  81
  82         ret->pw_name = talloc_strdup(ret, from->pw_name);
  83         ret->pw_passwd = talloc_strdup(ret, from->pw_passwd);
  84         ret->pw_uid = from->pw_uid;
  85         ret->pw_gid = from->pw_gid;
  86         ret->pw_gecos = talloc_strdup(ret, from->pw_gecos);
  87         ret->pw_dir = talloc_strdup(ret, from->pw_dir);
  88         ret->pw_shell = talloc_strdup(ret, from->pw_shell);
  89
  90         return ret;
  91 }
  92
  93 struct passwd *getpwnam_alloc(TALLOC_CTX *mem_ctx, const char *name)
  94 {
  95         struct passwd *temp;
  96
  97         temp = sys_getpwnam(name);
  98
  99         if (!temp) {
 100 #if 0
 101                 if (errno == ENOMEM) {
 102                         /* what now? */
 103                 }
 104 #endif
 105                 return NULL;
 106         }
 107
 108         return tcopy_passwd(mem_ctx, temp);
 109 }
 110
 111 /****************************************************************************
 112  talloc'ed version of getpwuid.
 113 ****************************************************************************/
 114
 115 struct passwd *getpwuid_alloc(TALLOC_CTX *mem_ctx, uid_t uid)
 116 {
 117         struct passwd *temp;
 118
 119         temp = sys_getpwuid(uid);
 120
 121         if (!temp) {
 122 #if 0
 123                 if (errno == ENOMEM) {
 124                         /* what now? */
 125                 }
 126 #endif
 127                 return NULL;
 128         }
 129
 130         return tcopy_passwd(mem_ctx, temp);
 131 }