source/utils/net_domain.c

   1 /*
   2    Samba Unix/Linux SMB client library
   3    net ads commands
   4    Copyright (C) 2001 Andrew Tridgell (tridge@samba.org)
   5    Copyright (C) 2001 Remus Koos (remuskoos@yahoo.com)
   6    Copyright (C) 2002 Jim McDonough (jmcd@us.ibm.com)
   7    Copyright (C) 2006 Gerald (Jerry) Carter (jerry@samba.org)
   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 3 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, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "utils/net.h"
  25
  26 /* Macro for checking RPC error codes to make things more readable */
  27
  28 #define CHECK_RPC_ERR(rpc, msg) \
  29         if (!NT_STATUS_IS_OK(result = rpc)) { \
  30                 DEBUG(0, (msg ": %s\n", nt_errstr(result))); \
  31                 goto done; \
  32         }
  33
  34 #define CHECK_RPC_ERR_DEBUG(rpc, debug_args) \
  35         if (!NT_STATUS_IS_OK(result = rpc)) { \
  36                 DEBUG(0, debug_args); \
  37                 goto done; \
  38         }
  39
  40 /*******************************************************************
  41  Leave an AD domain.  Windows XP disables the machine account.
  42  We'll try the same.  The old code would do an LDAP delete.
  43  That only worked using the machine creds because added the machine
  44  with full control to the computer object's ACL.
  45 *******************************************************************/
  46
  47 NTSTATUS netdom_leave_domain( TALLOC_CTX *mem_ctx, struct cli_state *cli,
  48                          DOM_SID *dom_sid )
  49 {
  50         struct rpc_pipe_client *pipe_hnd = NULL;
  51         POLICY_HND sam_pol, domain_pol, user_pol;
  52         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
  53         char *acct_name;
  54         uint32 flags = 0x3e8;
  55         const char *const_acct_name;
  56         uint32 user_rid;
  57         uint32 num_rids, *name_types, *user_rids;
  58         SAM_USERINFO_CTR ctr, *qctr = NULL;
  59         SAM_USER_INFO_16 p16;
  60
  61         /* Open the domain */
  62
  63         if ( (pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &status)) == NULL ) {
  64                 DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
  65                         nt_errstr(status) ));
  66                 return status;
  67         }
  68
  69         status = rpccli_samr_connect(pipe_hnd, mem_ctx,
  70                         SEC_RIGHTS_MAXIMUM_ALLOWED, &sam_pol);
  71         if ( !NT_STATUS_IS_OK(status) )
  72                 return status;
  73
  74
  75         status = rpccli_samr_open_domain(pipe_hnd, mem_ctx, &sam_pol,
  76                         SEC_RIGHTS_MAXIMUM_ALLOWED, dom_sid, &domain_pol);
  77         if ( !NT_STATUS_IS_OK(status) )
  78                 return status;
  79
  80         /* Create domain user */
  81
  82         acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname());
  83         strlower_m(acct_name);
  84         const_acct_name = acct_name;
  85
  86         status = rpccli_samr_lookup_names(pipe_hnd, mem_ctx,
  87                         &domain_pol, flags, 1, &const_acct_name,
  88                         &num_rids, &user_rids, &name_types);
  89         if ( !NT_STATUS_IS_OK(status) )
  90                 return status;
  91
  92         if ( name_types[0] != SID_NAME_USER) {
  93                 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name, name_types[0]));
  94                 return NT_STATUS_INVALID_WORKSTATION;
  95         }
  96
  97         user_rid = user_rids[0];
  98
  99         /* Open handle on user */
 100
 101         status = rpccli_samr_open_user(pipe_hnd, mem_ctx, &domain_pol,
 102                         SEC_RIGHTS_MAXIMUM_ALLOWED, user_rid, &user_pol);
 103         if ( !NT_STATUS_IS_OK(status) ) {
 104                 goto done;
 105         }
 106
 107         /* Get user info */
 108
 109         status = rpccli_samr_query_userinfo(pipe_hnd, mem_ctx, &user_pol, 16, &qctr);
 110         if ( !NT_STATUS_IS_OK(status) ) {
 111                 rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
 112                 goto done;
 113         }
 114
 115         /* now disable and setuser info */
 116
 117         ZERO_STRUCT(ctr);
 118         ctr.switch_value = 16;
 119         ctr.info.id16 = &p16;
 120
 121         p16.acb_info = qctr->info.id16->acb_info | ACB_DISABLED;
 122
 123         status = rpccli_samr_set_userinfo2(pipe_hnd, mem_ctx, &user_pol, 16,
 124                                         &cli->user_session_key, &ctr);
 125
 126         rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
 127
 128 done:
 129         rpccli_samr_close(pipe_hnd, mem_ctx, &domain_pol);
 130         rpccli_samr_close(pipe_hnd, mem_ctx, &sam_pol);
 131
 132         cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
 133
 134         return status;
 135 }
 136
 137 /*******************************************************************
 138  Store the machine password and domain SID
 139  ********************************************************************/
 140
 141 int netdom_store_machine_account( const char *domain, DOM_SID *sid, const char *pw )
 142 {
 143         if (!secrets_store_domain_sid(domain, sid)) {
 144                 DEBUG(1,("Failed to save domain sid\n"));
 145                 return -1;
 146         }
 147
 148         if (!secrets_store_machine_password(pw, domain, SEC_CHAN_WKSTA)) {
 149                 DEBUG(1,("Failed to save machine password\n"));
 150                 return -1;
 151         }
 152
 153         return 0;
 154 }
 155
 156 /*******************************************************************
 157  ********************************************************************/
 158
 159 NTSTATUS netdom_get_domain_sid( TALLOC_CTX *mem_ctx, struct cli_state *cli,
 160                                 char **domain, DOM_SID **sid )
 161 {
 162         struct rpc_pipe_client *pipe_hnd = NULL;
 163         POLICY_HND lsa_pol;
 164         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 165
 166         if ( (pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_LSARPC, &status)) == NULL ) {
 167                 DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
 168                         nt_errstr(status) ));
 169                 return status;
 170         }
 171
 172         status = rpccli_lsa_open_policy(pipe_hnd, mem_ctx, True,
 173                         SEC_RIGHTS_MAXIMUM_ALLOWED, &lsa_pol);
 174         if ( !NT_STATUS_IS_OK(status) )
 175                 return status;
 176
 177         status = rpccli_lsa_query_info_policy(pipe_hnd, mem_ctx,
 178                         &lsa_pol, 5, domain, sid);
 179         if ( !NT_STATUS_IS_OK(status) )
 180                 return status;
 181
 182         rpccli_lsa_Close(pipe_hnd, mem_ctx, &lsa_pol);
 183         cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
 184
 185         /* Bail out if domain didn't get set. */
 186         if (!domain) {
 187                 DEBUG(0, ("Could not get domain name.\n"));
 188                 return NT_STATUS_UNSUCCESSFUL;
 189         }
 190
 191         return NT_STATUS_OK;
 192 }
 193
 194 /*******************************************************************
 195  Do the domain join
 196  ********************************************************************/
 197
 198 NTSTATUS netdom_join_domain( TALLOC_CTX *mem_ctx, struct cli_state *cli,
 199                            DOM_SID *dom_sid, const char *clear_pw,
 200                            enum netdom_domain_t dom_type )
 201 {
 202         struct rpc_pipe_client *pipe_hnd = NULL;
 203         POLICY_HND sam_pol, domain_pol, user_pol;
 204         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 205         char *acct_name;
 206         const char *const_acct_name;
 207         uint32 user_rid;
 208         uint32 num_rids, *name_types, *user_rids;
 209         uint32 flags = 0x3e8;
 210         uint32 acb_info = ACB_WSTRUST;
 211         uchar pwbuf[516];
 212         SAM_USERINFO_CTR ctr;
 213         SAM_USER_INFO_24 p24;
 214         SAM_USER_INFO_16 p16;
 215         uchar md4_trust_password[16];
 216
 217         /* Open the domain */
 218
 219         if ( (pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &status)) == NULL ) {
 220                 DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
 221                         nt_errstr(status) ));
 222                 return status;
 223         }
 224
 225         status = rpccli_samr_connect(pipe_hnd, mem_ctx,
 226                         SEC_RIGHTS_MAXIMUM_ALLOWED, &sam_pol);
 227         if ( !NT_STATUS_IS_OK(status) )
 228                 return status;
 229
 230
 231         status = rpccli_samr_open_domain(pipe_hnd, mem_ctx, &sam_pol,
 232                         SEC_RIGHTS_MAXIMUM_ALLOWED, dom_sid, &domain_pol);
 233         if ( !NT_STATUS_IS_OK(status) )
 234                 return status;
 235
 236         /* Create domain user */
 237
 238         acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname());
 239         strlower_m(acct_name);
 240         const_acct_name = acct_name;
 241
 242         /* Don't try to set any acb_info flags other than ACB_WSTRUST */
 243
 244         status = rpccli_samr_create_dom_user(pipe_hnd, mem_ctx, &domain_pol,
 245                         acct_name, acb_info, 0xe005000b, &user_pol, &user_rid);
 246
 247         if ( !NT_STATUS_IS_OK(status)
 248                 && !NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS))
 249         {
 250                 d_fprintf(stderr, "Creation of workstation account failed\n");
 251
 252                 /* If NT_STATUS_ACCESS_DENIED then we have a valid
 253                    username/password combo but the user does not have
 254                    administrator access. */
 255
 256                 if (NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED))
 257                         d_fprintf(stderr, "User specified does not have administrator privileges\n");
 258
 259                 return status;
 260         }
 261
 262         /* We *must* do this.... don't ask... */
 263
 264         if (NT_STATUS_IS_OK(status)) {
 265                 rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
 266         }
 267
 268         status = rpccli_samr_lookup_names(pipe_hnd, mem_ctx,
 269                         &domain_pol, flags, 1, &const_acct_name,
 270                         &num_rids, &user_rids, &name_types);
 271         if ( !NT_STATUS_IS_OK(status) )
 272                 return status;
 273
 274         if ( name_types[0] != SID_NAME_USER) {
 275                 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name, name_types[0]));
 276                 return NT_STATUS_INVALID_WORKSTATION;
 277         }
 278
 279         user_rid = user_rids[0];
 280
 281         /* Open handle on user */
 282
 283         status = rpccli_samr_open_user(pipe_hnd, mem_ctx, &domain_pol,
 284                         SEC_RIGHTS_MAXIMUM_ALLOWED, user_rid, &user_pol);
 285
 286         /* Create a random machine account password */
 287
 288         E_md4hash( clear_pw, md4_trust_password);
 289         encode_pw_buffer(pwbuf, clear_pw, STR_UNICODE);
 290
 291         /* Set password on machine account */
 292
 293         ZERO_STRUCT(ctr);
 294         ZERO_STRUCT(p24);
 295
 296         init_sam_user_info24(&p24, (char *)pwbuf,24);
 297
 298         ctr.switch_value = 24;
 299         ctr.info.id24 = &p24;
 300
 301         status = rpccli_samr_set_userinfo(pipe_hnd, mem_ctx, &user_pol,
 302                         24, &cli->user_session_key, &ctr);
 303
 304         if ( !NT_STATUS_IS_OK(status) ) {
 305                 d_fprintf( stderr, "Failed to set password for machine account (%s)\n",
 306                         nt_errstr(status));
 307                 return status;
 308         }
 309
 310
 311         /* Why do we have to try to (re-)set the ACB to be the same as what
 312            we passed in the samr_create_dom_user() call?  When a NT
 313            workstation is joined to a domain by an administrator the
 314            acb_info is set to 0x80.  For a normal user with "Add
 315            workstations to the domain" rights the acb_info is 0x84.  I'm
 316            not sure whether it is supposed to make a difference or not.  NT
 317            seems to cope with either value so don't bomb out if the set
 318            userinfo2 level 0x10 fails.  -tpot */
 319
 320         ZERO_STRUCT(ctr);
 321         ctr.switch_value = 16;
 322         ctr.info.id16 = &p16;
 323
 324         /* Fill in the additional account flags now */
 325
 326         acb_info |= ACB_PWNOEXP;
 327         if ( dom_type == ND_TYPE_AD ) {
 328 #if !defined(ENCTYPE_ARCFOUR_HMAC)
 329                 acb_info |= ACB_USE_DES_KEY_ONLY;
 330 #endif
 331                 ;;
 332         }
 333
 334         init_sam_user_info16(&p16, acb_info);
 335
 336         status = rpccli_samr_set_userinfo2(pipe_hnd, mem_ctx, &user_pol, 16,
 337                                         &cli->user_session_key, &ctr);
 338
 339         rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
 340         cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
 341
 342         return status;
 343 }
 344