source/libsmb/passchange.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    SMB client password change routine
   5    Copyright (C) Andrew Tridgell 1994-1998
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23
  24
  25 extern pstring global_myname;
  26 extern pstring scope;
  27
  28 /*************************************************************
  29 change a password on a remote machine using IPC calls
  30 *************************************************************/
  31 BOOL remote_password_change(const char *remote_machine, const char *user_name,
  32                             const char *old_passwd, const char *new_passwd,
  33                             char *err_str, size_t err_str_len)
  34 {
  35         struct nmb_name calling, called;
  36         struct cli_state cli;
  37         struct in_addr ip;
  38
  39         if(!resolve_name( remote_machine, &ip, 0x20)) {
  40                 slprintf(err_str, err_str_len-1, "unable to find an IP address for machine %s.\n",
  41                         remote_machine );
  42                 return False;
  43         }
  44
  45         ZERO_STRUCT(cli);
  46
  47         if (!cli_initialise(&cli) || !cli_connect(&cli, remote_machine, &ip)) {
  48                 slprintf(err_str, err_str_len-1, "unable to connect to SMB server on machine %s. Error was : %s.\n",
  49                         remote_machine, cli_errstr(&cli) );
  50                 return False;
  51         }
  52
  53         make_nmb_name(&calling, global_myname , 0x0 , scope);
  54         make_nmb_name(&called , remote_machine, 0x20, scope);
  55
  56         if (!cli_session_request(&cli, &calling, &called)) {
  57                 slprintf(err_str, err_str_len-1, "machine %s rejected the session setup. Error was : %s.\n",
  58                         remote_machine, cli_errstr(&cli) );
  59                 cli_shutdown(&cli);
  60                 return False;
  61         }
  62
  63         cli.protocol = PROTOCOL_NT1;
  64
  65         if (!cli_negprot(&cli)) {
  66                 slprintf(err_str, err_str_len-1, "machine %s rejected the negotiate protocol. Error was : %s.\n",
  67                         remote_machine, cli_errstr(&cli) );
  68                 cli_shutdown(&cli);
  69                 return False;
  70         }
  71
  72         /*
  73          * We should connect as the anonymous user here, in case
  74          * the server has "must change password" checked...
  75          * Thanks to <Nicholas.S.Jenkins@cdc.com> for this fix.
  76          */
  77
  78         if (!cli_session_setup(&cli, "", "", 0, "", 0, "")) {
  79                 slprintf(err_str, err_str_len-1, "machine %s rejected the session setup. Error was : %s.\n",
  80                         remote_machine, cli_errstr(&cli) );
  81                 cli_shutdown(&cli);
  82                 return False;
  83         }
  84
  85         if (!cli_send_tconX(&cli, "IPC$", "IPC", "", 1)) {
  86                 slprintf(err_str, err_str_len-1, "machine %s rejected the tconX on the IPC$ share. Error was : %s.\n",
  87                         remote_machine, cli_errstr(&cli) );
  88                 cli_shutdown(&cli);
  89                 return False;
  90         }
  91
  92         if(!cli_oem_change_password(&cli, user_name, new_passwd, old_passwd)) {
  93                 slprintf(err_str, err_str_len-1, "machine %s rejected the password change: Error was : %s.\n",
  94                         remote_machine, cli_errstr(&cli) );
  95                 cli_shutdown(&cli);
  96                 return False;
  97         }
  98
  99         cli_shutdown(&cli);
 100         return True;
 101 }