source/smbd/change_trust_pw.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Periodic Trust account password changing.
   4  *  Copyright (C) Andrew Tridgell              1992-1997,
   5  *  Copyright (C) Luke Kenneth Casson Leighton 1996-1997,
   6  *  Copyright (C) Paul Ashton                       1997.
   7  *  Copyright (C) Jeremy Allison                    1998.
   8  *  Copyright (C) Andrew Bartlett                   2001.
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include "includes.h"
  26
  27 /*********************************************************
  28  Change the domain password on the PDC.
  29 **********************************************************/
  30
  31 static NTSTATUS modify_trust_password( const char *domain, const char *remote_machine,
  32                                    unsigned char orig_trust_passwd_hash[16])
  33 {
  34         struct cli_state *cli;
  35         DOM_SID domain_sid;
  36         NTSTATUS nt_status;
  37
  38         /*
  39          * Ensure we have the domain SID for this domain.
  40          */
  41
  42         if (!secrets_fetch_domain_sid(domain, &domain_sid)) {
  43                 DEBUG(0, ("modify_trust_password: unable to fetch domain sid.\n"));
  44                 return NT_STATUS_UNSUCCESSFUL;
  45         }
  46
  47         if (!NT_STATUS_IS_OK(cli_full_connection(&cli, global_myname(), remote_machine,
  48                                            NULL, 0,
  49                                            "IPC$", "IPC",
  50                                            "", "",
  51                                            "", 0, NULL)))
  52         {
  53                 DEBUG(0,("modify_trust_password: Connection to %s failed!\n", remote_machine));
  54                 return NT_STATUS_UNSUCCESSFUL;
  55         }
  56
  57         /*
  58          * Ok - we have an anonymous connection to the IPC$ share.
  59          * Now start the NT Domain stuff :-).
  60          */
  61
  62         if(cli_nt_session_open(cli, PI_NETLOGON) == False) {
  63                 DEBUG(0,("modify_trust_password: unable to open the domain client session to machine %s. Error was : %s.\n",
  64                         remote_machine, cli_errstr(cli)));
  65                 cli_nt_session_close(cli);
  66                 cli_ulogoff(cli);
  67                 cli_shutdown(cli);
  68                 return NT_STATUS_UNSUCCESSFUL;
  69         }
  70
  71         nt_status = trust_pw_change_and_store_it(cli, cli->mem_ctx,
  72                                            orig_trust_passwd_hash);
  73
  74         cli_nt_session_close(cli);
  75         cli_ulogoff(cli);
  76         cli_shutdown(cli);
  77
  78         return nt_status;
  79 }
  80
  81 /************************************************************************
  82  Change the trust account password for a domain.
  83 ************************************************************************/
  84
  85 NTSTATUS change_trust_account_password( const char *domain, const char *remote_machine)
  86 {
  87         unsigned char old_trust_passwd_hash[16];
  88         time_t lct;
  89         NTSTATUS res = NT_STATUS_UNSUCCESSFUL;
  90         struct in_addr pdc_ip;
  91         fstring dc_name;
  92
  93
  94         if(!secrets_fetch_trust_account_password(domain, old_trust_passwd_hash, &lct)) {
  95                 DEBUG(0,("change_trust_account_password: unable to read the machine account password for domain %s.\n",
  96                         domain));
  97                 return NT_STATUS_UNSUCCESSFUL;
  98         }
  99
 100         if (remote_machine == NULL || !strcmp(remote_machine, "*")) {
 101                 /* Use the PDC *only* for this */
 102
 103                 if ( !get_pdc_ip(domain, &pdc_ip) ) {
 104                         DEBUG(0,("Can't get IP for PDC for domain %s\n", domain));
 105                         goto failed;
 106                 }
 107
 108                 if ( !lookup_dc_name(global_myname(), domain, &pdc_ip, dc_name) )
 109                         goto failed;
 110         }
 111         /* supoport old deprecated "smbpasswd -j DOMAIN -r MACHINE" behavior */
 112         else {
 113                 fstrcpy( dc_name, remote_machine );
 114         }
 115
 116         /* if this next call fails, then give up.  We can't do
 117            password changes on BDC's  --jerry */
 118
 119         res = modify_trust_password(domain, dc_name, old_trust_passwd_hash);
 120
 121 failed:
 122         if (!NT_STATUS_IS_OK(res)) {
 123                 DEBUG(0,("%s : change_trust_account_password: Failed to change password for domain %s.\n",
 124                         timestring(False), domain));
 125         }
 126
 127         return res;
 128 }