source/passdb/pdb_guest.c

   1 /*
   2  * 'Guest' password backend for samba
   3  * Copyright (C) Jelmer Vernooij 2002
   4  * Copyright (C) Andrew Bartlett 2003
   5  *
   6  * This program is free software; you can redistribute it and/or modify it under
   7  * the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program; if not, write to the Free Software Foundation, Inc., 675
  18  * Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include "includes.h"
  22
  23 /******************************************************************
  24   Lookup a name in the SAM database
  25  ******************************************************************/
  26
  27 static NTSTATUS guestsam_getsampwnam (struct pdb_methods *methods, SAM_ACCOUNT *sam_account, const char *sname)
  28 {
  29         NTSTATUS nt_status;
  30         const char *guest_account = lp_guestaccount();
  31
  32         if (!sam_account || !sname) {
  33                 DEBUG(0,("invalid name specified"));
  34                 return NT_STATUS_UNSUCCESSFUL;
  35         }
  36
  37         if (!(guest_account && *guest_account)) {
  38                 DEBUG(1, ("NULL guest account!?!?\n"));
  39                 return NT_STATUS_UNSUCCESSFUL;
  40         }
  41
  42         if (!methods) {
  43                 DEBUG(0,("invalid methods\n"));
  44                 return NT_STATUS_UNSUCCESSFUL;
  45         }
  46         if (!strequal(guest_account, sname)) {
  47                 return NT_STATUS_NO_SUCH_USER;
  48         }
  49
  50         pdb_fill_default_sam(sam_account);
  51
  52         if (!pdb_set_username(sam_account, guest_account, PDB_SET))
  53                 return NT_STATUS_UNSUCCESSFUL;
  54
  55         if (!pdb_set_fullname(sam_account, guest_account, PDB_SET))
  56                 return NT_STATUS_UNSUCCESSFUL;
  57
  58         if (!pdb_set_domain(sam_account, lp_workgroup(), PDB_DEFAULT))
  59                 return NT_STATUS_UNSUCCESSFUL;
  60
  61         if (!pdb_set_acct_ctrl(sam_account, ACB_NORMAL, PDB_DEFAULT))
  62                 return NT_STATUS_UNSUCCESSFUL;
  63
  64         if (!pdb_set_user_sid_from_rid(sam_account, DOMAIN_USER_RID_GUEST, PDB_DEFAULT))
  65                 return NT_STATUS_UNSUCCESSFUL;
  66
  67         if (!pdb_set_group_sid_from_rid(sam_account, DOMAIN_GROUP_RID_GUESTS, PDB_DEFAULT))
  68                 return NT_STATUS_UNSUCCESSFUL;
  69
  70         return NT_STATUS_OK;
  71 }
  72
  73
  74 /***************************************************************************
  75   Search by rid
  76  **************************************************************************/
  77
  78 static NTSTATUS guestsam_getsampwrid (struct pdb_methods *methods,
  79                                  SAM_ACCOUNT *sam_account, uint32 rid)
  80 {
  81         if (rid != DOMAIN_USER_RID_GUEST) {
  82                 return NT_STATUS_NO_SUCH_USER;
  83         }
  84
  85         if (!sam_account) {
  86                 return NT_STATUS_INVALID_PARAMETER;
  87         }
  88
  89         return guestsam_getsampwnam (methods, sam_account, lp_guestaccount());
  90 }
  91
  92 static NTSTATUS guestsam_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT * user, const DOM_SID *sid)
  93 {
  94         uint32 rid;
  95         if (!sid_peek_check_rid(get_global_sam_sid(), sid, &rid))
  96                 return NT_STATUS_NO_SUCH_USER;
  97
  98         return guestsam_getsampwrid(my_methods, user, rid);
  99 }
 100
 101
 102 NTSTATUS pdb_init_guestsam(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
 103 {
 104         NTSTATUS nt_status;
 105
 106         if (!pdb_context) {
 107                 DEBUG(0, ("invalid pdb_context specified\n"));
 108                 return NT_STATUS_UNSUCCESSFUL;
 109         }
 110
 111         if (!NT_STATUS_IS_OK(nt_status = make_pdb_methods(pdb_context->mem_ctx, pdb_method))) {
 112                 return nt_status;
 113         }
 114
 115         (*pdb_method)->name = "guestsam";
 116
 117         (*pdb_method)->getsampwnam = guestsam_getsampwnam;
 118         (*pdb_method)->getsampwsid = guestsam_getsampwsid;
 119
 120         /* we should do no group mapping here */
 121         (*pdb_method)->getgrsid = pdb_nop_getgrsid;
 122         (*pdb_method)->getgrgid = pdb_nop_getgrgid;
 123         (*pdb_method)->getgrnam = pdb_nop_getgrnam;
 124         (*pdb_method)->add_group_mapping_entry = pdb_nop_add_group_mapping_entry;
 125         (*pdb_method)->update_group_mapping_entry = pdb_nop_update_group_mapping_entry;
 126         (*pdb_method)->delete_group_mapping_entry = pdb_nop_delete_group_mapping_entry;
 127         (*pdb_method)->enum_group_mapping = pdb_nop_enum_group_mapping;
 128
 129
 130         /* There's not very much to initialise here */
 131         return NT_STATUS_OK;
 132 }
 133
 134 NTSTATUS pdb_guest_init(void)
 135 {
 136         return smb_register_passdb(PASSDB_INTERFACE_VERSION, "guest", pdb_init_guestsam);
 137 }
 138