release/src/router/samba/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
  27 /*************************************************************
  28 change a password on a remote machine using IPC calls
  29 *************************************************************/
  30 BOOL remote_password_change(const char *remote_machine, const char *user_name,
  31                             const char *old_passwd, const char *new_passwd,
  32                             char *err_str, size_t err_str_len)
  33 {
  34         struct nmb_name calling, called;
  35         struct cli_state cli;
  36         struct in_addr ip;
  37
  38         *err_str = '\0';
  39
  40         if(!resolve_name( remote_machine, &ip, 0x20)) {
  41                 slprintf(err_str, err_str_len-1, "unable to find an IP address for machine %s.\n",
  42                         remote_machine );
  43                 return False;
  44         }
  45
  46         ZERO_STRUCT(cli);
  47
  48         if (!cli_initialise(&cli) || !cli_connect(&cli, remote_machine, &ip)) {
  49                 slprintf(err_str, err_str_len-1, "unable to connect to SMB server on machine %s. Error was : %s.\n",
  50                         remote_machine, cli_errstr(&cli) );
  51                 return False;
  52         }
  53
  54         make_nmb_name(&calling, global_myname , 0x0);
  55         make_nmb_name(&called , remote_machine, 0x20);
  56
  57         if (!cli_session_request(&cli, &calling, &called)) {
  58                 slprintf(err_str, err_str_len-1, "machine %s rejected the session setup. Error was : %s.\n",
  59                         remote_machine, cli_errstr(&cli) );
  60                 cli_shutdown(&cli);
  61                 return False;
  62         }
  63
  64         cli.protocol = PROTOCOL_NT1;
  65
  66         if (!cli_negprot(&cli)) {
  67                 slprintf(err_str, err_str_len-1, "machine %s rejected the negotiate protocol. Error was : %s.\n",
  68                         remote_machine, cli_errstr(&cli) );
  69                 cli_shutdown(&cli);
  70                 return False;
  71         }
  72
  73         /*
  74          * We should connect as the anonymous user here, in case
  75          * the server has "must change password" checked...
  76          * Thanks to <Nicholas.S.Jenkins@cdc.com> for this fix.
  77          */
  78
  79         if (!cli_session_setup(&cli, "", "", 0, "", 0, "")) {
  80                 slprintf(err_str, err_str_len-1, "machine %s rejected the session setup. Error was : %s.\n",
  81                         remote_machine, cli_errstr(&cli) );
  82                 cli_shutdown(&cli);
  83                 return False;
  84         }
  85
  86         if (!cli_send_tconX(&cli, "IPC$", "IPC", "", 1)) {
  87                 slprintf(err_str, err_str_len-1, "machine %s rejected the tconX on the IPC$ share. Error was : %s.\n",
  88                         remote_machine, cli_errstr(&cli) );
  89                 cli_shutdown(&cli);
  90                 return False;
  91         }
  92
  93         if(!cli_oem_change_password(&cli, user_name, new_passwd, old_passwd)) {
  94                 slprintf(err_str, err_str_len-1, "machine %s rejected the password change: Error was : %s.\n",
  95                         remote_machine, cli_errstr(&cli) );
  96                 cli_shutdown(&cli);
  97                 return False;
  98         }
  99
 100         cli_shutdown(&cli);
 101         return True;
 102 }