source/rpc_client/cli_login.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    NT Domain Authentication SMB / MSRPC client
   5    Copyright (C) Andrew Tridgell 1994-1997
   6    Copyright (C) Luke Kenneth Casson Leighton 1996-1997
   7    Copyright (C) Jeremy Allison  1999.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "includes.h"
  25
  26 extern fstring global_myworkgroup;
  27 extern pstring global_myname;
  28
  29 /****************************************************************************
  30 Initialize domain session credentials.
  31 ****************************************************************************/
  32
  33 NTSTATUS cli_nt_setup_creds(struct cli_state *cli, unsigned char mach_pwd[16])
  34 {
  35         NTSTATUS result;
  36         DOM_CHAL clnt_chal;
  37         DOM_CHAL srv_chal;
  38
  39         UTIME zerotime;
  40
  41         /******************* Request Challenge ********************/
  42
  43         generate_random_buffer( clnt_chal.data, 8, False);
  44
  45         /* Send a client challenge; receive a server challenge */
  46         if (!cli_net_req_chal(cli, &clnt_chal, &srv_chal)) {
  47                 DEBUG(0,("cli_nt_setup_creds: request challenge failed\n"));
  48                 return NT_STATUS_UNSUCCESSFUL;
  49         }
  50
  51         /**************** Long-term Session key **************/
  52
  53         /* calculate the session key */
  54         cred_session_key(&clnt_chal, &srv_chal, (uchar *)mach_pwd, cli->sess_key);
  55         memset((char *)cli->sess_key+8, '\0', 8);
  56
  57         /******************* Authenticate 2 ********************/
  58
  59         /* Calculate auth-2 credentials */
  60         zerotime.time = 0;
  61         cred_create(cli->sess_key, &clnt_chal, zerotime, &(cli->clnt_cred.challenge));
  62
  63         /*
  64          * Send client auth-2 challenge.
  65          * Receive an auth-2 challenge response and check it.
  66          */
  67
  68         result = cli_net_auth2(cli, (lp_server_role() == ROLE_DOMAIN_MEMBER) ?
  69                         SEC_CHAN_WKSTA : SEC_CHAN_BDC, 0x000001ff, &srv_chal);
  70
  71         if (!NT_STATUS_IS_OK(result)) {
  72                 DEBUG(0,("cli_nt_setup_creds: auth2 challenge failed\n"));
  73                 return result;
  74         }
  75
  76         return NT_STATUS_OK;
  77 }
  78
  79 /****************************************************************************
  80  Set machine password.
  81  ****************************************************************************/
  82
  83 BOOL cli_nt_srv_pwset(struct cli_state *cli, unsigned char *new_hashof_mach_pwd)
  84 {
  85         unsigned char processed_new_pwd[16];
  86
  87         DEBUG(5,("cli_nt_srv_pwset: %d\n", __LINE__));
  88
  89 #ifdef DEBUG_PASSWORD
  90         dump_data(6, (char *)new_hashof_mach_pwd, 16);
  91 #endif
  92
  93         /* Process the new password. */
  94         cred_hash3( processed_new_pwd, new_hashof_mach_pwd, cli->sess_key, 1);
  95
  96         /* Send client srv_pwset challenge */
  97         return cli_net_srv_pwset(cli, processed_new_pwd);
  98 }
  99
 100 /****************************************************************************
 101 NT login - interactive.
 102 *NEVER* use this code. This method of doing a logon (sending the cleartext
 103 password equivalents, protected by the session key) is inherently insecure
 104 given the current design of the NT Domain system. JRA.
 105  ****************************************************************************/
 106
 107 NTSTATUS cli_nt_login_interactive(struct cli_state *cli, char *unix_domain, char *unix_username,
 108                                 uint32 smb_userid_low, char *unix_password,
 109                                 NET_ID_INFO_CTR *ctr, NET_USER_INFO_3 *user_info3)
 110 {
 111         fstring dos_password, dos_username, dos_domain;
 112         uchar lm_owf_user_pwd[16];
 113         uchar nt_owf_user_pwd[16];
 114         NTSTATUS ret;
 115
 116         DEBUG(5,("cli_nt_login_interactive: %d\n", __LINE__));
 117
 118         fstrcpy(dos_password, unix_password);
 119         unix_to_dos(dos_password);
 120         fstrcpy(dos_username, unix_username);
 121         unix_to_dos(dos_username);
 122         fstrcpy(dos_domain, unix_domain);
 123         unix_to_dos(dos_domain);
 124
 125         nt_lm_owf_gen(dos_password, nt_owf_user_pwd, lm_owf_user_pwd);
 126
 127 #ifdef DEBUG_PASSWORD
 128
 129         DEBUG(100,("nt owf of user password: "));
 130         dump_data(100, (char *)lm_owf_user_pwd, 16);
 131
 132         DEBUG(100,("nt owf of user password: "));
 133         dump_data(100, (char *)nt_owf_user_pwd, 16);
 134
 135 #endif
 136
 137         DEBUG(5,("cli_nt_login_interactive: %d\n", __LINE__));
 138
 139         /* indicate an "interactive" login */
 140         ctr->switch_value = INTERACTIVE_LOGON_TYPE;
 141
 142         /* Create the structure needed for SAM logon. */
 143         init_id_info1(&ctr->auth.id1, dos_domain, 0,
 144                 smb_userid_low, 0,
 145                 dos_username, cli->clnt_name_slash,
 146                 (char *)cli->sess_key, lm_owf_user_pwd, nt_owf_user_pwd);
 147
 148         /* Ensure we overwrite all the plaintext password equivalents. */
 149         memset(lm_owf_user_pwd, '\0', sizeof(lm_owf_user_pwd));
 150         memset(nt_owf_user_pwd, '\0', sizeof(nt_owf_user_pwd));
 151
 152         /* Send client sam-logon request - update credentials on success. */
 153         ret = cli_net_sam_logon(cli, ctr, user_info3);
 154
 155         memset(ctr->auth.id1.lm_owf.data, '\0', sizeof(lm_owf_user_pwd));
 156         memset(ctr->auth.id1.nt_owf.data, '\0', sizeof(nt_owf_user_pwd));
 157
 158         return ret;
 159 }
 160
 161 /****************************************************************************
 162 NT login - network.
 163 *ALWAYS* use this call to validate a user as it does not expose plaintext
 164 password equivalents over the network. JRA.
 165 ****************************************************************************/
 166
 167 NTSTATUS cli_nt_login_network(struct cli_state *cli, char *unix_domain, char *unix_username,
 168                                 uint32 smb_userid_low, const char lm_chal[8],
 169                                 const char *lm_chal_resp, const char *nt_chal_resp,
 170                                 NET_ID_INFO_CTR *ctr, NET_USER_INFO_3 *user_info3)
 171 {
 172         fstring dos_wksta_name, dos_username, dos_domain;
 173         DEBUG(5,("cli_nt_login_network: %d\n", __LINE__));
 174         /* indicate a "network" login */
 175         ctr->switch_value = NET_LOGON_TYPE;
 176
 177         fstrcpy(dos_wksta_name, cli->clnt_name_slash);
 178         unix_to_dos(dos_wksta_name);
 179
 180         fstrcpy(dos_username, unix_username);
 181         unix_to_dos(dos_username);
 182
 183         fstrcpy(dos_domain, unix_domain);
 184         unix_to_dos(dos_domain);
 185
 186         /* Create the structure needed for SAM logon. */
 187         init_id_info2(&ctr->auth.id2, dos_domain, 0, smb_userid_low, 0,
 188                 dos_username, dos_wksta_name,
 189                 (const uchar *)lm_chal, (const uchar *)lm_chal_resp, lm_chal_resp ? 24 : 0,
 190                 (const uchar *)nt_chal_resp, nt_chal_resp ? 24 : 0 );
 191
 192         /* Send client sam-logon request - update credentials on success. */
 193         return cli_net_sam_logon(cli, ctr, user_info3);
 194 }
 195
 196 /****************************************************************************
 197 NT Logoff.
 198 ****************************************************************************/
 199
 200 BOOL cli_nt_logoff(struct cli_state *cli, NET_ID_INFO_CTR *ctr)
 201 {
 202         DEBUG(5,("cli_nt_logoff: %d\n", __LINE__));
 203
 204         /* Send client sam-logoff request - update credentials on success. */
 205         return cli_net_sam_logoff(cli, ctr);
 206 }