source3/passdb/util_unixsids.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Translate unix-defined names to SIDs and vice versa
   4    Copyright (C) Volker Lendecke 2005
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21
  22 bool sid_check_is_unix_users(const DOM_SID *sid)
  23 {
  24         return sid_equal(sid, &global_sid_Unix_Users);
  25 }
  26
  27 bool sid_check_is_in_unix_users(const DOM_SID *sid)
  28 {
  29         DOM_SID dom_sid;
  30         uint32 rid;
  31
  32         sid_copy(&dom_sid, sid);
  33         sid_split_rid(&dom_sid, &rid);
  34
  35         return sid_check_is_unix_users(&dom_sid);
  36 }
  37
  38 bool uid_to_unix_users_sid(uid_t uid, DOM_SID *sid)
  39 {
  40         return sid_compose(sid, &global_sid_Unix_Users, uid);
  41 }
  42
  43 bool gid_to_unix_groups_sid(gid_t gid, DOM_SID *sid)
  44 {
  45         return sid_compose(sid, &global_sid_Unix_Groups, gid);
  46 }
  47
  48 const char *unix_users_domain_name(void)
  49 {
  50         return "Unix User";
  51 }
  52
  53 bool lookup_unix_user_name(const char *name, DOM_SID *sid)
  54 {
  55         struct passwd *pwd;
  56         bool ret;
  57
  58         pwd = getpwnam_alloc(talloc_autofree_context(), name);
  59         if (pwd == NULL) {
  60                 return False;
  61         }
  62
  63         /*
  64          * For 64-bit uid's we have enough space in the whole SID,
  65          * should they become necessary
  66          */
  67         ret = sid_compose(sid, &global_sid_Unix_Users, pwd->pw_uid);
  68         TALLOC_FREE(pwd);
  69         return ret;
  70 }
  71
  72 bool sid_check_is_unix_groups(const DOM_SID *sid)
  73 {
  74         return sid_equal(sid, &global_sid_Unix_Groups);
  75 }
  76
  77 bool sid_check_is_in_unix_groups(const DOM_SID *sid)
  78 {
  79         DOM_SID dom_sid;
  80         uint32 rid;
  81
  82         sid_copy(&dom_sid, sid);
  83         sid_split_rid(&dom_sid, &rid);
  84
  85         return sid_check_is_unix_groups(&dom_sid);
  86 }
  87
  88 const char *unix_groups_domain_name(void)
  89 {
  90         return "Unix Group";
  91 }
  92
  93 bool lookup_unix_group_name(const char *name, DOM_SID *sid)
  94 {
  95         struct group *grp;
  96
  97         grp = sys_getgrnam(name);
  98         if (grp == NULL) {
  99                 return False;
 100         }
 101
 102         /*
 103          * For 64-bit gid's we have enough space in the whole SID,
 104          * should they become necessary
 105          */
 106         return sid_compose(sid, &global_sid_Unix_Groups, grp->gr_gid);
 107 }