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cli_login.c

/* 
   Unix SMB/Netbios implementation.
   Version 1.9.
   NT Domain Authentication SMB / MSRPC client
   Copyright (C) Andrew Tridgell 1994-1997
   Copyright (C) Luke Kenneth Casson Leighton 1996-1997
   Copyright (C) Jeremy Allison  1999.
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "includes.h"

extern fstring global_myworkgroup;
extern pstring global_myname;

/****************************************************************************
Initialize domain session credentials.
****************************************************************************/

NTSTATUS cli_nt_setup_creds(struct cli_state *cli, unsigned char mach_pwd[16])
{
      NTSTATUS result;
      DOM_CHAL clnt_chal;
      DOM_CHAL srv_chal;

      UTIME zerotime;

      /******************* Request Challenge ********************/

      generate_random_buffer( clnt_chal.data, 8, False);
      
      /* Send a client challenge; receive a server challenge */
      if (!cli_net_req_chal(cli, &clnt_chal, &srv_chal)) {
            DEBUG(0,("cli_nt_setup_creds: request challenge failed\n"));
            return NT_STATUS_UNSUCCESSFUL;
      }

      /**************** Long-term Session key **************/

      /* calculate the session key */
      cred_session_key(&clnt_chal, &srv_chal, mach_pwd, cli->sess_key);
      memset((char *)cli->sess_key+8, '\0', 8);

      /******************* Authenticate 2 ********************/

      /* Calculate auth-2 credentials */
      zerotime.time = 0;
      cred_create(cli->sess_key, &clnt_chal, zerotime, &(cli->clnt_cred.challenge));

      /*  
       * Send client auth-2 challenge.
       * Receive an auth-2 challenge response and check it.
       */

      result = cli_net_auth2(cli, (lp_server_role() == ROLE_DOMAIN_MEMBER) ?
                  SEC_CHAN_WKSTA : SEC_CHAN_BDC, 0x000001ff, &srv_chal);
  
      if (!NT_STATUS_IS_OK(result)) {
            DEBUG(0,("cli_nt_setup_creds: auth2 challenge failed\n"));
            return result;
      }

      return NT_STATUS_OK;
}

/****************************************************************************
 Set machine password.
 ****************************************************************************/

BOOL cli_nt_srv_pwset(struct cli_state *cli, unsigned char *new_hashof_mach_pwd)
{
      unsigned char processed_new_pwd[16];

      DEBUG(5,("cli_nt_srv_pwset: %d\n", __LINE__));

#ifdef DEBUG_PASSWORD
      dump_data(6, (char *)new_hashof_mach_pwd, 16);
#endif

      /* Process the new password. */
      cred_hash3( processed_new_pwd, new_hashof_mach_pwd, cli->sess_key, 1);

      /* Send client srv_pwset challenge */
      return cli_net_srv_pwset(cli, processed_new_pwd);
}

/****************************************************************************
NT login - interactive.
*NEVER* use this code. This method of doing a logon (sending the cleartext
password equivalents, protected by the session key) is inherently insecure
given the current design of the NT Domain system. JRA.
 ****************************************************************************/

NTSTATUS cli_nt_login_interactive(struct cli_state *cli, char *unix_domain, char *unix_username, 
                        uint32 smb_userid_low, char *unix_password,
                        NET_ID_INFO_CTR *ctr, NET_USER_INFO_3 *user_info3)
{
      pstring dos_password, dos_username, dos_domain;
      uchar lm_owf_user_pwd[16];
      uchar nt_owf_user_pwd[16];
      NTSTATUS ret;

      DEBUG(5,("cli_nt_login_interactive: %d\n", __LINE__));

      unix_to_dos(dos_password, unix_password);
      unix_to_dos(dos_username, unix_username);
      unix_to_dos(dos_domain, unix_domain);

      nt_lm_owf_gen(dos_password, nt_owf_user_pwd, lm_owf_user_pwd);

#ifdef DEBUG_PASSWORD

      DEBUG(100,("nt owf of user password: "));
      dump_data(100, (char *)lm_owf_user_pwd, 16);

      DEBUG(100,("nt owf of user password: "));
      dump_data(100, (char *)nt_owf_user_pwd, 16);

#endif

      DEBUG(5,("cli_nt_login_interactive: %d\n", __LINE__));

      /* indicate an "interactive" login */
      ctr->switch_value = INTERACTIVE_LOGON_TYPE;

      /* Create the structure needed for SAM logon. */
      init_id_info1(&ctr->auth.id1, dos_domain, 0, 
            smb_userid_low, 0,
            dos_username, cli->clnt_name_slash,
            cli->sess_key, lm_owf_user_pwd, nt_owf_user_pwd);

      /* Ensure we overwrite all the plaintext password equivalents. */
      memset(lm_owf_user_pwd, '\0', sizeof(lm_owf_user_pwd));
      memset(nt_owf_user_pwd, '\0', sizeof(nt_owf_user_pwd));

      /* Send client sam-logon request - update credentials on success. */
      ret = cli_net_sam_logon(cli, ctr, user_info3);

      memset(ctr->auth.id1.lm_owf.data, '\0', sizeof(lm_owf_user_pwd));
      memset(ctr->auth.id1.nt_owf.data, '\0', sizeof(nt_owf_user_pwd));

      return ret;
}

/****************************************************************************
NT login - network.
*ALWAYS* use this call to validate a user as it does not expose plaintext
password equivalents over the network. JRA.
****************************************************************************/

NTSTATUS cli_nt_login_network(struct cli_state *cli, char *unix_domain, char *unix_username, 
                        uint32 smb_userid_low, const char lm_chal[8], 
                        const char *lm_chal_resp, const char *nt_chal_resp,
                        NET_ID_INFO_CTR *ctr, NET_USER_INFO_3 *user_info3)
{
      DEBUG(5,("cli_nt_login_network: %d\n", __LINE__));
      /* indicate a "network" login */
      ctr->switch_value = NET_LOGON_TYPE;

      /* Create the structure needed for SAM logon. */
      init_id_info2(&ctr->auth.id2, unix_domain, 0, smb_userid_low, 0,
            unix_username, cli->clnt_name_slash,
            (const uchar *)lm_chal, (const uchar *)lm_chal_resp, lm_chal_resp ? 24 : 0,
            (const uchar *)nt_chal_resp, nt_chal_resp ? 24 : 0 );

      /* Send client sam-logon request - update credentials on success. */
      return cli_net_sam_logon(cli, ctr, user_info3);
}

/****************************************************************************
NT Logoff.
****************************************************************************/

BOOL cli_nt_logoff(struct cli_state *cli, NET_ID_INFO_CTR *ctr)
{
      DEBUG(5,("cli_nt_logoff: %d\n", __LINE__));

      /* Send client sam-logoff request - update credentials on success. */
      return cli_net_sam_logoff(cli, ctr);
}

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