source3/libnet/libnet_join.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  libnet Join Support
   4  *  Copyright (C) Gerald (Jerry) Carter 2006
   5  *  Copyright (C) Guenther Deschner 2007-2008
   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 3 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, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include "includes.h"
  22 #include "libnet/libnet.h"
  23 #include "libcli/auth/libcli_auth.h"
  24
  25 /****************************************************************
  26 ****************************************************************/
  27
  28 #define LIBNET_JOIN_DUMP_CTX(ctx, r, f) \
  29         do { \
  30                 char *str = NULL; \
  31                 str = NDR_PRINT_FUNCTION_STRING(ctx, libnet_JoinCtx, f, r); \
  32                 DEBUG(1,("libnet_Join:\n%s", str)); \
  33                 TALLOC_FREE(str); \
  34         } while (0)
  35
  36 #define LIBNET_JOIN_IN_DUMP_CTX(ctx, r) \
  37         LIBNET_JOIN_DUMP_CTX(ctx, r, NDR_IN | NDR_SET_VALUES)
  38 #define LIBNET_JOIN_OUT_DUMP_CTX(ctx, r) \
  39         LIBNET_JOIN_DUMP_CTX(ctx, r, NDR_OUT)
  40
  41 #define LIBNET_UNJOIN_DUMP_CTX(ctx, r, f) \
  42         do { \
  43                 char *str = NULL; \
  44                 str = NDR_PRINT_FUNCTION_STRING(ctx, libnet_UnjoinCtx, f, r); \
  45                 DEBUG(1,("libnet_Unjoin:\n%s", str)); \
  46                 TALLOC_FREE(str); \
  47         } while (0)
  48
  49 #define LIBNET_UNJOIN_IN_DUMP_CTX(ctx, r) \
  50         LIBNET_UNJOIN_DUMP_CTX(ctx, r, NDR_IN | NDR_SET_VALUES)
  51 #define LIBNET_UNJOIN_OUT_DUMP_CTX(ctx, r) \
  52         LIBNET_UNJOIN_DUMP_CTX(ctx, r, NDR_OUT)
  53
  54 /****************************************************************
  55 ****************************************************************/
  56
  57 static void libnet_join_set_error_string(TALLOC_CTX *mem_ctx,
  58                                          struct libnet_JoinCtx *r,
  59                                          const char *format, ...)
  60 {
  61         va_list args;
  62
  63         if (r->out.error_string) {
  64                 return;
  65         }
  66
  67         va_start(args, format);
  68         r->out.error_string = talloc_vasprintf(mem_ctx, format, args);
  69         va_end(args);
  70 }
  71
  72 /****************************************************************
  73 ****************************************************************/
  74
  75 static void libnet_unjoin_set_error_string(TALLOC_CTX *mem_ctx,
  76                                            struct libnet_UnjoinCtx *r,
  77                                            const char *format, ...)
  78 {
  79         va_list args;
  80
  81         if (r->out.error_string) {
  82                 return;
  83         }
  84
  85         va_start(args, format);
  86         r->out.error_string = talloc_vasprintf(mem_ctx, format, args);
  87         va_end(args);
  88 }
  89
  90 #ifdef WITH_ADS
  91
  92 /****************************************************************
  93 ****************************************************************/
  94
  95 static ADS_STATUS libnet_connect_ads(const char *dns_domain_name,
  96                                      const char *netbios_domain_name,
  97                                      const char *dc_name,
  98                                      const char *user_name,
  99                                      const char *password,
 100                                      ADS_STRUCT **ads)
 101 {
 102         ADS_STATUS status;
 103         ADS_STRUCT *my_ads = NULL;
 104
 105         my_ads = ads_init(dns_domain_name,
 106                           netbios_domain_name,
 107                           dc_name);
 108         if (!my_ads) {
 109                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 110         }
 111
 112         if (user_name) {
 113                 SAFE_FREE(my_ads->auth.user_name);
 114                 my_ads->auth.user_name = SMB_STRDUP(user_name);
 115         }
 116
 117         if (password) {
 118                 SAFE_FREE(my_ads->auth.password);
 119                 my_ads->auth.password = SMB_STRDUP(password);
 120         }
 121
 122         status = ads_connect_user_creds(my_ads);
 123         if (!ADS_ERR_OK(status)) {
 124                 ads_destroy(&my_ads);
 125                 return status;
 126         }
 127
 128         *ads = my_ads;
 129         return ADS_SUCCESS;
 130 }
 131
 132 /****************************************************************
 133 ****************************************************************/
 134
 135 static ADS_STATUS libnet_join_connect_ads(TALLOC_CTX *mem_ctx,
 136                                           struct libnet_JoinCtx *r)
 137 {
 138         ADS_STATUS status;
 139
 140         status = libnet_connect_ads(r->out.dns_domain_name,
 141                                     r->out.netbios_domain_name,
 142                                     r->in.dc_name,
 143                                     r->in.admin_account,
 144                                     r->in.admin_password,
 145                                     &r->in.ads);
 146         if (!ADS_ERR_OK(status)) {
 147                 libnet_join_set_error_string(mem_ctx, r,
 148                         "failed to connect to AD: %s",
 149                         ads_errstr(status));
 150                 return status;
 151         }
 152
 153         if (!r->out.netbios_domain_name) {
 154                 r->out.netbios_domain_name = talloc_strdup(mem_ctx,
 155                                                            r->in.ads->server.workgroup);
 156                 ADS_ERROR_HAVE_NO_MEMORY(r->out.netbios_domain_name);
 157         }
 158
 159         if (!r->out.dns_domain_name) {
 160                 r->out.dns_domain_name = talloc_strdup(mem_ctx,
 161                                                        r->in.ads->config.realm);
 162                 ADS_ERROR_HAVE_NO_MEMORY(r->out.dns_domain_name);
 163         }
 164
 165         r->out.domain_is_ad = true;
 166
 167         return ADS_SUCCESS;
 168 }
 169
 170 /****************************************************************
 171 ****************************************************************/
 172
 173 static ADS_STATUS libnet_unjoin_connect_ads(TALLOC_CTX *mem_ctx,
 174                                             struct libnet_UnjoinCtx *r)
 175 {
 176         ADS_STATUS status;
 177
 178         status = libnet_connect_ads(r->in.domain_name,
 179                                     r->in.domain_name,
 180                                     r->in.dc_name,
 181                                     r->in.admin_account,
 182                                     r->in.admin_password,
 183                                     &r->in.ads);
 184         if (!ADS_ERR_OK(status)) {
 185                 libnet_unjoin_set_error_string(mem_ctx, r,
 186                         "failed to connect to AD: %s",
 187                         ads_errstr(status));
 188         }
 189
 190         return status;
 191 }
 192
 193 /****************************************************************
 194  join a domain using ADS (LDAP mods)
 195 ****************************************************************/
 196
 197 static ADS_STATUS libnet_join_precreate_machine_acct(TALLOC_CTX *mem_ctx,
 198                                                      struct libnet_JoinCtx *r)
 199 {
 200         ADS_STATUS status;
 201         LDAPMessage *res = NULL;
 202         const char *attrs[] = { "dn", NULL };
 203         bool moved = false;
 204
 205         status = ads_check_ou_dn(mem_ctx, r->in.ads, &r->in.account_ou);
 206         if (!ADS_ERR_OK(status)) {
 207                 return status;
 208         }
 209
 210         status = ads_search_dn(r->in.ads, &res, r->in.account_ou, attrs);
 211         if (!ADS_ERR_OK(status)) {
 212                 return status;
 213         }
 214
 215         if (ads_count_replies(r->in.ads, res) != 1) {
 216                 ads_msgfree(r->in.ads, res);
 217                 return ADS_ERROR_LDAP(LDAP_NO_SUCH_OBJECT);
 218         }
 219
 220         ads_msgfree(r->in.ads, res);
 221
 222         /* Attempt to create the machine account and bail if this fails.
 223            Assume that the admin wants exactly what they requested */
 224
 225         status = ads_create_machine_acct(r->in.ads,
 226                                          r->in.machine_name,
 227                                          r->in.account_ou);
 228
 229         if (ADS_ERR_OK(status)) {
 230                 DEBUG(1,("machine account creation created\n"));
 231                 return status;
 232         } else  if ((status.error_type == ENUM_ADS_ERROR_LDAP) &&
 233                     (status.err.rc == LDAP_ALREADY_EXISTS)) {
 234                 status = ADS_SUCCESS;
 235         }
 236
 237         if (!ADS_ERR_OK(status)) {
 238                 DEBUG(1,("machine account creation failed\n"));
 239                 return status;
 240         }
 241
 242         status = ads_move_machine_acct(r->in.ads,
 243                                        r->in.machine_name,
 244                                        r->in.account_ou,
 245                                        &moved);
 246         if (!ADS_ERR_OK(status)) {
 247                 DEBUG(1,("failure to locate/move pre-existing "
 248                         "machine account\n"));
 249                 return status;
 250         }
 251
 252         DEBUG(1,("The machine account %s the specified OU.\n",
 253                 moved ? "was moved into" : "already exists in"));
 254
 255         return status;
 256 }
 257
 258 /****************************************************************
 259 ****************************************************************/
 260
 261 static ADS_STATUS libnet_unjoin_remove_machine_acct(TALLOC_CTX *mem_ctx,
 262                                                     struct libnet_UnjoinCtx *r)
 263 {
 264         ADS_STATUS status;
 265
 266         if (!r->in.ads) {
 267                 status = libnet_unjoin_connect_ads(mem_ctx, r);
 268                 if (!ADS_ERR_OK(status)) {
 269                         libnet_unjoin_set_error_string(mem_ctx, r,
 270                                 "failed to connect to AD: %s",
 271                                 ads_errstr(status));
 272                         return status;
 273                 }
 274         }
 275
 276         status = ads_leave_realm(r->in.ads, r->in.machine_name);
 277         if (!ADS_ERR_OK(status)) {
 278                 libnet_unjoin_set_error_string(mem_ctx, r,
 279                         "failed to leave realm: %s",
 280                         ads_errstr(status));
 281                 return status;
 282         }
 283
 284         return ADS_SUCCESS;
 285 }
 286
 287 /****************************************************************
 288 ****************************************************************/
 289
 290 static ADS_STATUS libnet_join_find_machine_acct(TALLOC_CTX *mem_ctx,
 291                                                 struct libnet_JoinCtx *r)
 292 {
 293         ADS_STATUS status;
 294         LDAPMessage *res = NULL;
 295         char *dn = NULL;
 296
 297         if (!r->in.machine_name) {
 298                 return ADS_ERROR(LDAP_NO_MEMORY);
 299         }
 300
 301         status = ads_find_machine_acct(r->in.ads,
 302                                        &res,
 303                                        r->in.machine_name);
 304         if (!ADS_ERR_OK(status)) {
 305                 return status;
 306         }
 307
 308         if (ads_count_replies(r->in.ads, res) != 1) {
 309                 status = ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 310                 goto done;
 311         }
 312
 313         dn = ads_get_dn(r->in.ads, mem_ctx, res);
 314         if (!dn) {
 315                 status = ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 316                 goto done;
 317         }
 318
 319         r->out.dn = talloc_strdup(mem_ctx, dn);
 320         if (!r->out.dn) {
 321                 status = ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 322                 goto done;
 323         }
 324
 325  done:
 326         ads_msgfree(r->in.ads, res);
 327         TALLOC_FREE(dn);
 328
 329         return status;
 330 }
 331
 332 /****************************************************************
 333  Set a machines dNSHostName and servicePrincipalName attributes
 334 ****************************************************************/
 335
 336 static ADS_STATUS libnet_join_set_machine_spn(TALLOC_CTX *mem_ctx,
 337                                               struct libnet_JoinCtx *r)
 338 {
 339         ADS_STATUS status;
 340         ADS_MODLIST mods;
 341         fstring my_fqdn;
 342         const char *spn_array[3] = {NULL, NULL, NULL};
 343         char *spn = NULL;
 344
 345         /* Find our DN */
 346
 347         status = libnet_join_find_machine_acct(mem_ctx, r);
 348         if (!ADS_ERR_OK(status)) {
 349                 return status;
 350         }
 351
 352         /* Windows only creates HOST/shortname & HOST/fqdn. */
 353
 354         spn = talloc_asprintf(mem_ctx, "HOST/%s", r->in.machine_name);
 355         if (!spn) {
 356                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 357         }
 358         strupper_m(spn);
 359         spn_array[0] = spn;
 360
 361         if (!name_to_fqdn(my_fqdn, r->in.machine_name)
 362             || (strchr(my_fqdn, '.') == NULL)) {
 363                 fstr_sprintf(my_fqdn, "%s.%s", r->in.machine_name,
 364                              r->out.dns_domain_name);
 365         }
 366
 367         strlower_m(my_fqdn);
 368
 369         if (!strequal(my_fqdn, r->in.machine_name)) {
 370                 spn = talloc_asprintf(mem_ctx, "HOST/%s", my_fqdn);
 371                 if (!spn) {
 372                         return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 373                 }
 374                 spn_array[1] = spn;
 375         }
 376
 377         mods = ads_init_mods(mem_ctx);
 378         if (!mods) {
 379                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 380         }
 381
 382         /* fields of primary importance */
 383
 384         status = ads_mod_str(mem_ctx, &mods, "dNSHostName", my_fqdn);
 385         if (!ADS_ERR_OK(status)) {
 386                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 387         }
 388
 389         status = ads_mod_strlist(mem_ctx, &mods, "servicePrincipalName",
 390                                  spn_array);
 391         if (!ADS_ERR_OK(status)) {
 392                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 393         }
 394
 395         return ads_gen_mod(r->in.ads, r->out.dn, mods);
 396 }
 397
 398 /****************************************************************
 399 ****************************************************************/
 400
 401 static ADS_STATUS libnet_join_set_machine_upn(TALLOC_CTX *mem_ctx,
 402                                               struct libnet_JoinCtx *r)
 403 {
 404         ADS_STATUS status;
 405         ADS_MODLIST mods;
 406
 407         if (!r->in.create_upn) {
 408                 return ADS_SUCCESS;
 409         }
 410
 411         /* Find our DN */
 412
 413         status = libnet_join_find_machine_acct(mem_ctx, r);
 414         if (!ADS_ERR_OK(status)) {
 415                 return status;
 416         }
 417
 418         if (!r->in.upn) {
 419                 r->in.upn = talloc_asprintf(mem_ctx,
 420                                             "host/%s@%s",
 421                                             r->in.machine_name,
 422                                             r->out.dns_domain_name);
 423                 if (!r->in.upn) {
 424                         return ADS_ERROR(LDAP_NO_MEMORY);
 425                 }
 426         }
 427
 428         /* now do the mods */
 429
 430         mods = ads_init_mods(mem_ctx);
 431         if (!mods) {
 432                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 433         }
 434
 435         /* fields of primary importance */
 436
 437         status = ads_mod_str(mem_ctx, &mods, "userPrincipalName", r->in.upn);
 438         if (!ADS_ERR_OK(status)) {
 439                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 440         }
 441
 442         return ads_gen_mod(r->in.ads, r->out.dn, mods);
 443 }
 444
 445
 446 /****************************************************************
 447 ****************************************************************/
 448
 449 static ADS_STATUS libnet_join_set_os_attributes(TALLOC_CTX *mem_ctx,
 450                                                 struct libnet_JoinCtx *r)
 451 {
 452         ADS_STATUS status;
 453         ADS_MODLIST mods;
 454         char *os_sp = NULL;
 455
 456         if (!r->in.os_name || !r->in.os_version ) {
 457                 return ADS_SUCCESS;
 458         }
 459
 460         /* Find our DN */
 461
 462         status = libnet_join_find_machine_acct(mem_ctx, r);
 463         if (!ADS_ERR_OK(status)) {
 464                 return status;
 465         }
 466
 467         /* now do the mods */
 468
 469         mods = ads_init_mods(mem_ctx);
 470         if (!mods) {
 471                 return ADS_ERROR(LDAP_NO_MEMORY);
 472         }
 473
 474         os_sp = talloc_asprintf(mem_ctx, "Samba %s", samba_version_string());
 475         if (!os_sp) {
 476                 return ADS_ERROR(LDAP_NO_MEMORY);
 477         }
 478
 479         /* fields of primary importance */
 480
 481         status = ads_mod_str(mem_ctx, &mods, "operatingSystem",
 482                              r->in.os_name);
 483         if (!ADS_ERR_OK(status)) {
 484                 return status;
 485         }
 486
 487         status = ads_mod_str(mem_ctx, &mods, "operatingSystemVersion",
 488                              r->in.os_version);
 489         if (!ADS_ERR_OK(status)) {
 490                 return status;
 491         }
 492
 493         status = ads_mod_str(mem_ctx, &mods, "operatingSystemServicePack",
 494                              os_sp);
 495         if (!ADS_ERR_OK(status)) {
 496                 return status;
 497         }
 498
 499         return ads_gen_mod(r->in.ads, r->out.dn, mods);
 500 }
 501
 502 /****************************************************************
 503 ****************************************************************/
 504
 505 static bool libnet_join_create_keytab(TALLOC_CTX *mem_ctx,
 506                                       struct libnet_JoinCtx *r)
 507 {
 508         if (!USE_SYSTEM_KEYTAB) {
 509                 return true;
 510         }
 511
 512         if (ads_keytab_create_default(r->in.ads) != 0) {
 513                 return false;
 514         }
 515
 516         return true;
 517 }
 518
 519 /****************************************************************
 520 ****************************************************************/
 521
 522 static bool libnet_join_derive_salting_principal(TALLOC_CTX *mem_ctx,
 523                                                  struct libnet_JoinCtx *r)
 524 {
 525         uint32_t domain_func;
 526         ADS_STATUS status;
 527         const char *salt = NULL;
 528         char *std_salt = NULL;
 529
 530         status = ads_domain_func_level(r->in.ads, &domain_func);
 531         if (!ADS_ERR_OK(status)) {
 532                 libnet_join_set_error_string(mem_ctx, r,
 533                         "failed to determine domain functional level: %s",
 534                         ads_errstr(status));
 535                 return false;
 536         }
 537
 538         /* go ahead and setup the default salt */
 539
 540         std_salt = kerberos_standard_des_salt();
 541         if (!std_salt) {
 542                 libnet_join_set_error_string(mem_ctx, r,
 543                         "failed to obtain standard DES salt");
 544                 return false;
 545         }
 546
 547         salt = talloc_strdup(mem_ctx, std_salt);
 548         if (!salt) {
 549                 return false;
 550         }
 551
 552         SAFE_FREE(std_salt);
 553
 554         /* if it's a Windows functional domain, we have to look for the UPN */
 555
 556         if (domain_func == DS_DOMAIN_FUNCTION_2000) {
 557                 char *upn;
 558
 559                 upn = ads_get_upn(r->in.ads, mem_ctx,
 560                                   r->in.machine_name);
 561                 if (upn) {
 562                         salt = talloc_strdup(mem_ctx, upn);
 563                         if (!salt) {
 564                                 return false;
 565                         }
 566                 }
 567         }
 568
 569         return kerberos_secrets_store_des_salt(salt);
 570 }
 571
 572 /****************************************************************
 573 ****************************************************************/
 574
 575 static ADS_STATUS libnet_join_post_processing_ads(TALLOC_CTX *mem_ctx,
 576                                                   struct libnet_JoinCtx *r)
 577 {
 578         ADS_STATUS status;
 579
 580         if (!r->in.ads) {
 581                 status = libnet_join_connect_ads(mem_ctx, r);
 582                 if (!ADS_ERR_OK(status)) {
 583                         return status;
 584                 }
 585         }
 586
 587         status = libnet_join_set_machine_spn(mem_ctx, r);
 588         if (!ADS_ERR_OK(status)) {
 589                 libnet_join_set_error_string(mem_ctx, r,
 590                         "failed to set machine spn: %s",
 591                         ads_errstr(status));
 592                 return status;
 593         }
 594
 595         status = libnet_join_set_os_attributes(mem_ctx, r);
 596         if (!ADS_ERR_OK(status)) {
 597                 libnet_join_set_error_string(mem_ctx, r,
 598                         "failed to set machine os attributes: %s",
 599                         ads_errstr(status));
 600                 return status;
 601         }
 602
 603         status = libnet_join_set_machine_upn(mem_ctx, r);
 604         if (!ADS_ERR_OK(status)) {
 605                 libnet_join_set_error_string(mem_ctx, r,
 606                         "failed to set machine upn: %s",
 607                         ads_errstr(status));
 608                 return status;
 609         }
 610
 611         if (!libnet_join_derive_salting_principal(mem_ctx, r)) {
 612                 return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 613         }
 614
 615         if (!libnet_join_create_keytab(mem_ctx, r)) {
 616                 libnet_join_set_error_string(mem_ctx, r,
 617                         "failed to create kerberos keytab");
 618                 return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 619         }
 620
 621         return ADS_SUCCESS;
 622 }
 623 #endif /* WITH_ADS */
 624
 625 /****************************************************************
 626  Store the machine password and domain SID
 627 ****************************************************************/
 628
 629 static bool libnet_join_joindomain_store_secrets(TALLOC_CTX *mem_ctx,
 630                                                  struct libnet_JoinCtx *r)
 631 {
 632         if (!secrets_store_domain_sid(r->out.netbios_domain_name,
 633                                       r->out.domain_sid))
 634         {
 635                 DEBUG(1,("Failed to save domain sid\n"));
 636                 return false;
 637         }
 638
 639         if (!secrets_store_machine_password(r->in.machine_password,
 640                                             r->out.netbios_domain_name,
 641                                             r->in.secure_channel_type))
 642         {
 643                 DEBUG(1,("Failed to save machine password\n"));
 644                 return false;
 645         }
 646
 647         return true;
 648 }
 649
 650 /****************************************************************
 651  Connect dc's IPC$ share
 652 ****************************************************************/
 653
 654 static NTSTATUS libnet_join_connect_dc_ipc(const char *dc,
 655                                            const char *user,
 656                                            const char *pass,
 657                                            bool use_kerberos,
 658                                            struct cli_state **cli)
 659 {
 660         int flags = 0;
 661
 662         if (use_kerberos) {
 663                 flags |= CLI_FULL_CONNECTION_USE_KERBEROS;
 664         }
 665
 666         if (use_kerberos && pass) {
 667                 flags |= CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS;
 668         }
 669
 670         return cli_full_connection(cli, NULL,
 671                                    dc,
 672                                    NULL, 0,
 673                                    "IPC$", "IPC",
 674                                    user,
 675                                    NULL,
 676                                    pass,
 677                                    flags,
 678                                    Undefined, NULL);
 679 }
 680
 681 /****************************************************************
 682  Lookup domain dc's info
 683 ****************************************************************/
 684
 685 static NTSTATUS libnet_join_lookup_dc_rpc(TALLOC_CTX *mem_ctx,
 686                                           struct libnet_JoinCtx *r,
 687                                           struct cli_state **cli)
 688 {
 689         struct rpc_pipe_client *pipe_hnd = NULL;
 690         struct policy_handle lsa_pol;
 691         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 692         union lsa_PolicyInformation *info = NULL;
 693
 694         status = libnet_join_connect_dc_ipc(r->in.dc_name,
 695                                             r->in.admin_account,
 696                                             r->in.admin_password,
 697                                             r->in.use_kerberos,
 698                                             cli);
 699         if (!NT_STATUS_IS_OK(status)) {
 700                 goto done;
 701         }
 702
 703         status = cli_rpc_pipe_open_noauth(*cli, &ndr_table_lsarpc.syntax_id,
 704                                           &pipe_hnd);
 705         if (!NT_STATUS_IS_OK(status)) {
 706                 DEBUG(0,("Error connecting to LSA pipe. Error was %s\n",
 707                         nt_errstr(status)));
 708                 goto done;
 709         }
 710
 711         status = rpccli_lsa_open_policy(pipe_hnd, mem_ctx, true,
 712                                         SEC_FLAG_MAXIMUM_ALLOWED, &lsa_pol);
 713         if (!NT_STATUS_IS_OK(status)) {
 714                 goto done;
 715         }
 716
 717         status = rpccli_lsa_QueryInfoPolicy2(pipe_hnd, mem_ctx,
 718                                              &lsa_pol,
 719                                              LSA_POLICY_INFO_DNS,
 720                                              &info);
 721         if (NT_STATUS_IS_OK(status)) {
 722                 r->out.domain_is_ad = true;
 723                 r->out.netbios_domain_name = info->dns.name.string;
 724                 r->out.dns_domain_name = info->dns.dns_domain.string;
 725                 r->out.forest_name = info->dns.dns_forest.string;
 726                 r->out.domain_sid = sid_dup_talloc(mem_ctx, info->dns.sid);
 727                 NT_STATUS_HAVE_NO_MEMORY(r->out.domain_sid);
 728         }
 729
 730         if (!NT_STATUS_IS_OK(status)) {
 731                 status = rpccli_lsa_QueryInfoPolicy(pipe_hnd, mem_ctx,
 732                                                     &lsa_pol,
 733                                                     LSA_POLICY_INFO_ACCOUNT_DOMAIN,
 734                                                     &info);
 735                 if (!NT_STATUS_IS_OK(status)) {
 736                         goto done;
 737                 }
 738
 739                 r->out.netbios_domain_name = info->account_domain.name.string;
 740                 r->out.domain_sid = sid_dup_talloc(mem_ctx, info->account_domain.sid);
 741                 NT_STATUS_HAVE_NO_MEMORY(r->out.domain_sid);
 742         }
 743
 744         rpccli_lsa_Close(pipe_hnd, mem_ctx, &lsa_pol);
 745         TALLOC_FREE(pipe_hnd);
 746
 747  done:
 748         return status;
 749 }
 750
 751 /****************************************************************
 752  Do the domain join unsecure
 753 ****************************************************************/
 754
 755 static NTSTATUS libnet_join_joindomain_rpc_unsecure(TALLOC_CTX *mem_ctx,
 756                                                     struct libnet_JoinCtx *r,
 757                                                     struct cli_state *cli)
 758 {
 759         struct rpc_pipe_client *pipe_hnd = NULL;
 760         unsigned char orig_trust_passwd_hash[16];
 761         unsigned char new_trust_passwd_hash[16];
 762         fstring trust_passwd;
 763         NTSTATUS status;
 764
 765         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_netlogon.syntax_id,
 766                                           &pipe_hnd);
 767         if (!NT_STATUS_IS_OK(status)) {
 768                 return status;
 769         }
 770
 771         if (!r->in.machine_password) {
 772                 r->in.machine_password = generate_random_str(mem_ctx, DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
 773                 NT_STATUS_HAVE_NO_MEMORY(r->in.machine_password);
 774         }
 775
 776         E_md4hash(r->in.machine_password, new_trust_passwd_hash);
 777
 778         /* according to WKSSVC_JOIN_FLAGS_MACHINE_PWD_PASSED */
 779         fstrcpy(trust_passwd, r->in.admin_password);
 780         strlower_m(trust_passwd);
 781
 782         /*
 783          * Machine names can be 15 characters, but the max length on
 784          * a password is 14.  --jerry
 785          */
 786
 787         trust_passwd[14] = '\0';
 788
 789         E_md4hash(trust_passwd, orig_trust_passwd_hash);
 790
 791         status = rpccli_netlogon_set_trust_password(pipe_hnd, mem_ctx,
 792                                                     r->in.machine_name,
 793                                                     orig_trust_passwd_hash,
 794                                                     r->in.machine_password,
 795                                                     new_trust_passwd_hash,
 796                                                     r->in.secure_channel_type);
 797
 798         return status;
 799 }
 800
 801 /****************************************************************
 802  Do the domain join
 803 ****************************************************************/
 804
 805 static NTSTATUS libnet_join_joindomain_rpc(TALLOC_CTX *mem_ctx,
 806                                            struct libnet_JoinCtx *r,
 807                                            struct cli_state *cli)
 808 {
 809         struct rpc_pipe_client *pipe_hnd = NULL;
 810         struct policy_handle sam_pol, domain_pol, user_pol;
 811         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 812         char *acct_name;
 813         struct lsa_String lsa_acct_name;
 814         uint32_t user_rid;
 815         uint32_t acct_flags = ACB_WSTRUST;
 816         struct samr_Ids user_rids;
 817         struct samr_Ids name_types;
 818         union samr_UserInfo user_info;
 819
 820         struct samr_CryptPassword crypt_pwd;
 821         struct samr_CryptPasswordEx crypt_pwd_ex;
 822
 823         ZERO_STRUCT(sam_pol);
 824         ZERO_STRUCT(domain_pol);
 825         ZERO_STRUCT(user_pol);
 826
 827         switch (r->in.secure_channel_type) {
 828         case SEC_CHAN_WKSTA:
 829                 acct_flags = ACB_WSTRUST;
 830                 break;
 831         case SEC_CHAN_BDC:
 832                 acct_flags = ACB_SVRTRUST;
 833                 break;
 834         default:
 835                 return NT_STATUS_INVALID_PARAMETER;
 836         }
 837
 838         if (!r->in.machine_password) {
 839                 r->in.machine_password = generate_random_str(mem_ctx, DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
 840                 NT_STATUS_HAVE_NO_MEMORY(r->in.machine_password);
 841         }
 842
 843         /* Open the domain */
 844
 845         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_samr.syntax_id,
 846                                           &pipe_hnd);
 847         if (!NT_STATUS_IS_OK(status)) {
 848                 DEBUG(0,("Error connecting to SAM pipe. Error was %s\n",
 849                         nt_errstr(status)));
 850                 goto done;
 851         }
 852
 853         status = rpccli_samr_Connect2(pipe_hnd, mem_ctx,
 854                                       pipe_hnd->desthost,
 855                                       SAMR_ACCESS_ENUM_DOMAINS
 856                                       | SAMR_ACCESS_LOOKUP_DOMAIN,
 857                                       &sam_pol);
 858         if (!NT_STATUS_IS_OK(status)) {
 859                 goto done;
 860         }
 861
 862         status = rpccli_samr_OpenDomain(pipe_hnd, mem_ctx,
 863                                         &sam_pol,
 864                                         SAMR_DOMAIN_ACCESS_LOOKUP_INFO_1
 865                                         | SAMR_DOMAIN_ACCESS_CREATE_USER
 866                                         | SAMR_DOMAIN_ACCESS_OPEN_ACCOUNT,
 867                                         r->out.domain_sid,
 868                                         &domain_pol);
 869         if (!NT_STATUS_IS_OK(status)) {
 870                 goto done;
 871         }
 872
 873         /* Create domain user */
 874
 875         acct_name = talloc_asprintf(mem_ctx, "%s$", r->in.machine_name);
 876         strlower_m(acct_name);
 877
 878         init_lsa_String(&lsa_acct_name, acct_name);
 879
 880         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_CREATE) {
 881                 uint32_t access_desired =
 882                         SEC_GENERIC_READ | SEC_GENERIC_WRITE | SEC_GENERIC_EXECUTE |
 883                         SEC_STD_WRITE_DAC | SEC_STD_DELETE |
 884                         SAMR_USER_ACCESS_SET_PASSWORD |
 885                         SAMR_USER_ACCESS_GET_ATTRIBUTES |
 886                         SAMR_USER_ACCESS_SET_ATTRIBUTES;
 887                 uint32_t access_granted = 0;
 888
 889                 DEBUG(10,("Creating account with desired access mask: %d\n",
 890                         access_desired));
 891
 892                 status = rpccli_samr_CreateUser2(pipe_hnd, mem_ctx,
 893                                                  &domain_pol,
 894                                                  &lsa_acct_name,
 895                                                  acct_flags,
 896                                                  access_desired,
 897                                                  &user_pol,
 898                                                  &access_granted,
 899                                                  &user_rid);
 900                 if (!NT_STATUS_IS_OK(status) &&
 901                     !NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
 902
 903                         DEBUG(10,("Creation of workstation account failed: %s\n",
 904                                 nt_errstr(status)));
 905
 906                         /* If NT_STATUS_ACCESS_DENIED then we have a valid
 907                            username/password combo but the user does not have
 908                            administrator access. */
 909
 910                         if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
 911                                 libnet_join_set_error_string(mem_ctx, r,
 912                                         "User specified does not have "
 913                                         "administrator privileges");
 914                         }
 915
 916                         goto done;
 917                 }
 918
 919                 if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
 920                         if (!(r->in.join_flags &
 921                               WKSSVC_JOIN_FLAGS_DOMAIN_JOIN_IF_JOINED)) {
 922                                 goto done;
 923                         }
 924                 }
 925
 926                 /* We *must* do this.... don't ask... */
 927
 928                 if (NT_STATUS_IS_OK(status)) {
 929                         rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
 930                 }
 931         }
 932
 933         status = rpccli_samr_LookupNames(pipe_hnd, mem_ctx,
 934                                          &domain_pol,
 935                                          1,
 936                                          &lsa_acct_name,
 937                                          &user_rids,
 938                                          &name_types);
 939         if (!NT_STATUS_IS_OK(status)) {
 940                 goto done;
 941         }
 942
 943         if (name_types.ids[0] != SID_NAME_USER) {
 944                 DEBUG(0,("%s is not a user account (type=%d)\n",
 945                         acct_name, name_types.ids[0]));
 946                 status = NT_STATUS_INVALID_WORKSTATION;
 947                 goto done;
 948         }
 949
 950         user_rid = user_rids.ids[0];
 951
 952         /* Open handle on user */
 953
 954         status = rpccli_samr_OpenUser(pipe_hnd, mem_ctx,
 955                                       &domain_pol,
 956                                       SEC_FLAG_MAXIMUM_ALLOWED,
 957                                       user_rid,
 958                                       &user_pol);
 959         if (!NT_STATUS_IS_OK(status)) {
 960                 goto done;
 961         }
 962
 963         /* Fill in the additional account flags now */
 964
 965         acct_flags |= ACB_PWNOEXP;
 966         if (r->out.domain_is_ad) {
 967 #if !defined(ENCTYPE_ARCFOUR_HMAC)
 968                 acct_flags |= ACB_USE_DES_KEY_ONLY;
 969 #endif
 970                 ;;
 971         }
 972
 973         /* Set account flags on machine account */
 974         ZERO_STRUCT(user_info.info16);
 975         user_info.info16.acct_flags = acct_flags;
 976
 977         status = rpccli_samr_SetUserInfo(pipe_hnd, mem_ctx,
 978                                          &user_pol,
 979                                          16,
 980                                          &user_info);
 981
 982         if (!NT_STATUS_IS_OK(status)) {
 983
 984                 rpccli_samr_DeleteUser(pipe_hnd, mem_ctx,
 985                                        &user_pol);
 986
 987                 libnet_join_set_error_string(mem_ctx, r,
 988                         "Failed to set account flags for machine account (%s)\n",
 989                         nt_errstr(status));
 990                 goto done;
 991         }
 992
 993         /* Set password on machine account - first try level 26 */
 994
 995         init_samr_CryptPasswordEx(r->in.machine_password,
 996                                   &cli->user_session_key,
 997                                   &crypt_pwd_ex);
 998
 999         user_info.info26.password = crypt_pwd_ex;
1000         user_info.info26.password_expired = PASS_DONT_CHANGE_AT_NEXT_LOGON;
1001
1002         status = rpccli_samr_SetUserInfo2(pipe_hnd, mem_ctx,
1003                                           &user_pol,
1004                                           26,
1005                                           &user_info);
1006
1007         if (NT_STATUS_EQUAL(status, NT_STATUS(DCERPC_FAULT_INVALID_TAG))) {
1008
1009                 /* retry with level 24 */
1010
1011                 init_samr_CryptPassword(r->in.machine_password,
1012                                         &cli->user_session_key,
1013                                         &crypt_pwd);
1014
1015                 user_info.info24.password = crypt_pwd;
1016                 user_info.info24.password_expired = PASS_DONT_CHANGE_AT_NEXT_LOGON;
1017
1018                 status = rpccli_samr_SetUserInfo2(pipe_hnd, mem_ctx,
1019                                                   &user_pol,
1020                                                   24,
1021                                                   &user_info);
1022         }
1023
1024         if (!NT_STATUS_IS_OK(status)) {
1025
1026                 rpccli_samr_DeleteUser(pipe_hnd, mem_ctx,
1027                                        &user_pol);
1028
1029                 libnet_join_set_error_string(mem_ctx, r,
1030                         "Failed to set password for machine account (%s)\n",
1031                         nt_errstr(status));
1032                 goto done;
1033         }
1034
1035         status = NT_STATUS_OK;
1036
1037  done:
1038         if (!pipe_hnd) {
1039                 return status;
1040         }
1041
1042         if (is_valid_policy_hnd(&sam_pol)) {
1043                 rpccli_samr_Close(pipe_hnd, mem_ctx, &sam_pol);
1044         }
1045         if (is_valid_policy_hnd(&domain_pol)) {
1046                 rpccli_samr_Close(pipe_hnd, mem_ctx, &domain_pol);
1047         }
1048         if (is_valid_policy_hnd(&user_pol)) {
1049                 rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
1050         }
1051         TALLOC_FREE(pipe_hnd);
1052
1053         return status;
1054 }
1055
1056 /****************************************************************
1057 ****************************************************************/
1058
1059 NTSTATUS libnet_join_ok(const char *netbios_domain_name,
1060                         const char *machine_name,
1061                         const char *dc_name)
1062 {
1063         uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
1064         struct cli_state *cli = NULL;
1065         struct rpc_pipe_client *pipe_hnd = NULL;
1066         struct rpc_pipe_client *netlogon_pipe = NULL;
1067         NTSTATUS status;
1068         char *machine_password = NULL;
1069         char *machine_account = NULL;
1070
1071         if (!dc_name) {
1072                 return NT_STATUS_INVALID_PARAMETER;
1073         }
1074
1075         if (!secrets_init()) {
1076                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1077         }
1078
1079         machine_password = secrets_fetch_machine_password(netbios_domain_name,
1080                                                           NULL, NULL);
1081         if (!machine_password) {
1082                 return NT_STATUS_NO_TRUST_LSA_SECRET;
1083         }
1084
1085         if (asprintf(&machine_account, "%s$", machine_name) == -1) {
1086                 SAFE_FREE(machine_password);
1087                 return NT_STATUS_NO_MEMORY;
1088         }
1089
1090         status = cli_full_connection(&cli, NULL,
1091                                      dc_name,
1092                                      NULL, 0,
1093                                      "IPC$", "IPC",
1094                                      machine_account,
1095                                      NULL,
1096                                      machine_password,
1097                                      0,
1098                                      Undefined, NULL);
1099         free(machine_account);
1100         free(machine_password);
1101
1102         if (!NT_STATUS_IS_OK(status)) {
1103                 status = cli_full_connection(&cli, NULL,
1104                                              dc_name,
1105                                              NULL, 0,
1106                                              "IPC$", "IPC",
1107                                              "",
1108                                              NULL,
1109                                              "",
1110                                              0,
1111                                              Undefined, NULL);
1112         }
1113
1114         if (!NT_STATUS_IS_OK(status)) {
1115                 return status;
1116         }
1117
1118         status = get_schannel_session_key(cli, netbios_domain_name,
1119                                           &neg_flags, &netlogon_pipe);
1120         if (!NT_STATUS_IS_OK(status)) {
1121                 if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_NETWORK_RESPONSE)) {
1122                         cli_shutdown(cli);
1123                         return NT_STATUS_OK;
1124                 }
1125
1126                 DEBUG(0,("libnet_join_ok: failed to get schannel session "
1127                         "key from server %s for domain %s. Error was %s\n",
1128                 cli->desthost, netbios_domain_name, nt_errstr(status)));
1129                 cli_shutdown(cli);
1130                 return status;
1131         }
1132
1133         if (!lp_client_schannel()) {
1134                 cli_shutdown(cli);
1135                 return NT_STATUS_OK;
1136         }
1137
1138         status = cli_rpc_pipe_open_schannel_with_key(
1139                 cli, &ndr_table_netlogon.syntax_id, NCACN_NP,
1140                 DCERPC_AUTH_LEVEL_PRIVACY,
1141                 netbios_domain_name, &netlogon_pipe->dc, &pipe_hnd);
1142
1143         cli_shutdown(cli);
1144
1145         if (!NT_STATUS_IS_OK(status)) {
1146                 DEBUG(0,("libnet_join_ok: failed to open schannel session "
1147                         "on netlogon pipe to server %s for domain %s. "
1148                         "Error was %s\n",
1149                         cli->desthost, netbios_domain_name, nt_errstr(status)));
1150                 return status;
1151         }
1152
1153         return NT_STATUS_OK;
1154 }
1155
1156 /****************************************************************
1157 ****************************************************************/
1158
1159 static WERROR libnet_join_post_verify(TALLOC_CTX *mem_ctx,
1160                                       struct libnet_JoinCtx *r)
1161 {
1162         NTSTATUS status;
1163
1164         status = libnet_join_ok(r->out.netbios_domain_name,
1165                                 r->in.machine_name,
1166                                 r->in.dc_name);
1167         if (!NT_STATUS_IS_OK(status)) {
1168                 libnet_join_set_error_string(mem_ctx, r,
1169                         "failed to verify domain membership after joining: %s",
1170                         get_friendly_nt_error_msg(status));
1171                 return WERR_SETUP_NOT_JOINED;
1172         }
1173
1174         return WERR_OK;
1175 }
1176
1177 /****************************************************************
1178 ****************************************************************/
1179
1180 static bool libnet_join_unjoindomain_remove_secrets(TALLOC_CTX *mem_ctx,
1181                                                     struct libnet_UnjoinCtx *r)
1182 {
1183         if (!secrets_delete_machine_password_ex(lp_workgroup())) {
1184                 return false;
1185         }
1186
1187         if (!secrets_delete_domain_sid(lp_workgroup())) {
1188                 return false;
1189         }
1190
1191         return true;
1192 }
1193
1194 /****************************************************************
1195 ****************************************************************/
1196
1197 static NTSTATUS libnet_join_unjoindomain_rpc(TALLOC_CTX *mem_ctx,
1198                                              struct libnet_UnjoinCtx *r)
1199 {
1200         struct cli_state *cli = NULL;
1201         struct rpc_pipe_client *pipe_hnd = NULL;
1202         struct policy_handle sam_pol, domain_pol, user_pol;
1203         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
1204         char *acct_name;
1205         uint32_t user_rid;
1206         struct lsa_String lsa_acct_name;
1207         struct samr_Ids user_rids;
1208         struct samr_Ids name_types;
1209         union samr_UserInfo *info = NULL;
1210
1211         ZERO_STRUCT(sam_pol);
1212         ZERO_STRUCT(domain_pol);
1213         ZERO_STRUCT(user_pol);
1214
1215         status = libnet_join_connect_dc_ipc(r->in.dc_name,
1216                                             r->in.admin_account,
1217                                             r->in.admin_password,
1218                                             r->in.use_kerberos,
1219                                             &cli);
1220         if (!NT_STATUS_IS_OK(status)) {
1221                 goto done;
1222         }
1223
1224         /* Open the domain */
1225
1226         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_samr.syntax_id,
1227                                           &pipe_hnd);
1228         if (!NT_STATUS_IS_OK(status)) {
1229                 DEBUG(0,("Error connecting to SAM pipe. Error was %s\n",
1230                         nt_errstr(status)));
1231                 goto done;
1232         }
1233
1234         status = rpccli_samr_Connect2(pipe_hnd, mem_ctx,
1235                                       pipe_hnd->desthost,
1236                                       SEC_FLAG_MAXIMUM_ALLOWED,
1237                                       &sam_pol);
1238         if (!NT_STATUS_IS_OK(status)) {
1239                 goto done;
1240         }
1241
1242         status = rpccli_samr_OpenDomain(pipe_hnd, mem_ctx,
1243                                         &sam_pol,
1244                                         SEC_FLAG_MAXIMUM_ALLOWED,
1245                                         r->in.domain_sid,
1246                                         &domain_pol);
1247         if (!NT_STATUS_IS_OK(status)) {
1248                 goto done;
1249         }
1250
1251         /* Create domain user */
1252
1253         acct_name = talloc_asprintf(mem_ctx, "%s$", r->in.machine_name);
1254         strlower_m(acct_name);
1255
1256         init_lsa_String(&lsa_acct_name, acct_name);
1257
1258         status = rpccli_samr_LookupNames(pipe_hnd, mem_ctx,
1259                                          &domain_pol,
1260                                          1,
1261                                          &lsa_acct_name,
1262                                          &user_rids,
1263                                          &name_types);
1264
1265         if (!NT_STATUS_IS_OK(status)) {
1266                 goto done;
1267         }
1268
1269         if (name_types.ids[0] != SID_NAME_USER) {
1270                 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name,
1271                         name_types.ids[0]));
1272                 status = NT_STATUS_INVALID_WORKSTATION;
1273                 goto done;
1274         }
1275
1276         user_rid = user_rids.ids[0];
1277
1278         /* Open handle on user */
1279
1280         status = rpccli_samr_OpenUser(pipe_hnd, mem_ctx,
1281                                       &domain_pol,
1282                                       SEC_FLAG_MAXIMUM_ALLOWED,
1283                                       user_rid,
1284                                       &user_pol);
1285         if (!NT_STATUS_IS_OK(status)) {
1286                 goto done;
1287         }
1288
1289         /* Get user info */
1290
1291         status = rpccli_samr_QueryUserInfo(pipe_hnd, mem_ctx,
1292                                            &user_pol,
1293                                            16,
1294                                            &info);
1295         if (!NT_STATUS_IS_OK(status)) {
1296                 rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
1297                 goto done;
1298         }
1299
1300         /* now disable and setuser info */
1301
1302         info->info16.acct_flags |= ACB_DISABLED;
1303
1304         status = rpccli_samr_SetUserInfo(pipe_hnd, mem_ctx,
1305                                          &user_pol,
1306                                          16,
1307                                          info);
1308
1309         rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
1310
1311 done:
1312         if (pipe_hnd) {
1313                 if (is_valid_policy_hnd(&domain_pol)) {
1314                         rpccli_samr_Close(pipe_hnd, mem_ctx, &domain_pol);
1315                 }
1316                 if (is_valid_policy_hnd(&sam_pol)) {
1317                         rpccli_samr_Close(pipe_hnd, mem_ctx, &sam_pol);
1318                 }
1319                 TALLOC_FREE(pipe_hnd);
1320         }
1321
1322         if (cli) {
1323                 cli_shutdown(cli);
1324         }
1325
1326         return status;
1327 }
1328
1329 /****************************************************************
1330 ****************************************************************/
1331
1332 static WERROR do_join_modify_vals_config(struct libnet_JoinCtx *r)
1333 {
1334         WERROR werr;
1335         struct smbconf_ctx *ctx;
1336
1337         werr = smbconf_init_reg(r, &ctx, NULL);
1338         if (!W_ERROR_IS_OK(werr)) {
1339                 goto done;
1340         }
1341
1342         if (!(r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE)) {
1343
1344                 werr = smbconf_set_global_parameter(ctx, "security", "user");
1345                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1346
1347                 werr = smbconf_set_global_parameter(ctx, "workgroup",
1348                                                     r->in.domain_name);
1349
1350                 smbconf_delete_global_parameter(ctx, "realm");
1351                 goto done;
1352         }
1353
1354         werr = smbconf_set_global_parameter(ctx, "security", "domain");
1355         W_ERROR_NOT_OK_GOTO_DONE(werr);
1356
1357         werr = smbconf_set_global_parameter(ctx, "workgroup",
1358                                             r->out.netbios_domain_name);
1359         W_ERROR_NOT_OK_GOTO_DONE(werr);
1360
1361         if (r->out.domain_is_ad) {
1362                 werr = smbconf_set_global_parameter(ctx, "security", "ads");
1363                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1364
1365                 werr = smbconf_set_global_parameter(ctx, "realm",
1366                                                     r->out.dns_domain_name);
1367                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1368         }
1369
1370  done:
1371         smbconf_shutdown(ctx);
1372         return werr;
1373 }
1374
1375 /****************************************************************
1376 ****************************************************************/
1377
1378 static WERROR do_unjoin_modify_vals_config(struct libnet_UnjoinCtx *r)
1379 {
1380         WERROR werr = WERR_OK;
1381         struct smbconf_ctx *ctx;
1382
1383         werr = smbconf_init_reg(r, &ctx, NULL);
1384         if (!W_ERROR_IS_OK(werr)) {
1385                 goto done;
1386         }
1387
1388         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1389
1390                 werr = smbconf_set_global_parameter(ctx, "security", "user");
1391                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1392
1393                 werr = smbconf_delete_global_parameter(ctx, "workgroup");
1394                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1395
1396                 smbconf_delete_global_parameter(ctx, "realm");
1397         }
1398
1399  done:
1400         smbconf_shutdown(ctx);
1401         return werr;
1402 }
1403
1404 /****************************************************************
1405 ****************************************************************/
1406
1407 static WERROR do_JoinConfig(struct libnet_JoinCtx *r)
1408 {
1409         WERROR werr;
1410
1411         if (!W_ERROR_IS_OK(r->out.result)) {
1412                 return r->out.result;
1413         }
1414
1415         if (!r->in.modify_config) {
1416                 return WERR_OK;
1417         }
1418
1419         werr = do_join_modify_vals_config(r);
1420         if (!W_ERROR_IS_OK(werr)) {
1421                 return werr;
1422         }
1423
1424         lp_load(get_dyn_CONFIGFILE(),true,false,false,true);
1425
1426         r->out.modified_config = true;
1427         r->out.result = werr;
1428
1429         return werr;
1430 }
1431
1432 /****************************************************************
1433 ****************************************************************/
1434
1435 static WERROR libnet_unjoin_config(struct libnet_UnjoinCtx *r)
1436 {
1437         WERROR werr;
1438
1439         if (!W_ERROR_IS_OK(r->out.result)) {
1440                 return r->out.result;
1441         }
1442
1443         if (!r->in.modify_config) {
1444                 return WERR_OK;
1445         }
1446
1447         werr = do_unjoin_modify_vals_config(r);
1448         if (!W_ERROR_IS_OK(werr)) {
1449                 return werr;
1450         }
1451
1452         lp_load(get_dyn_CONFIGFILE(),true,false,false,true);
1453
1454         r->out.modified_config = true;
1455         r->out.result = werr;
1456
1457         return werr;
1458 }
1459
1460 /****************************************************************
1461 ****************************************************************/
1462
1463 static bool libnet_parse_domain_dc(TALLOC_CTX *mem_ctx,
1464                                    const char *domain_str,
1465                                    const char **domain_p,
1466                                    const char **dc_p)
1467 {
1468         char *domain = NULL;
1469         char *dc = NULL;
1470         const char *p = NULL;
1471
1472         if (!domain_str || !domain_p || !dc_p) {
1473                 return false;
1474         }
1475
1476         p = strchr_m(domain_str, '\\');
1477
1478         if (p != NULL) {
1479                 domain = talloc_strndup(mem_ctx, domain_str,
1480                                          PTR_DIFF(p, domain_str));
1481                 dc = talloc_strdup(mem_ctx, p+1);
1482                 if (!dc) {
1483                         return false;
1484                 }
1485         } else {
1486                 domain = talloc_strdup(mem_ctx, domain_str);
1487                 dc = NULL;
1488         }
1489         if (!domain) {
1490                 return false;
1491         }
1492
1493         *domain_p = domain;
1494
1495         if (!*dc_p && dc) {
1496                 *dc_p = dc;
1497         }
1498
1499         return true;
1500 }
1501
1502 /****************************************************************
1503 ****************************************************************/
1504
1505 static WERROR libnet_join_pre_processing(TALLOC_CTX *mem_ctx,
1506                                          struct libnet_JoinCtx *r)
1507 {
1508         if (!r->in.domain_name) {
1509                 libnet_join_set_error_string(mem_ctx, r,
1510                         "No domain name defined");
1511                 return WERR_INVALID_PARAM;
1512         }
1513
1514         if (!libnet_parse_domain_dc(mem_ctx, r->in.domain_name,
1515                                     &r->in.domain_name,
1516                                     &r->in.dc_name)) {
1517                 libnet_join_set_error_string(mem_ctx, r,
1518                         "Failed to parse domain name");
1519                 return WERR_INVALID_PARAM;
1520         }
1521
1522         if (IS_DC) {
1523                 return WERR_SETUP_DOMAIN_CONTROLLER;
1524         }
1525
1526         if (!secrets_init()) {
1527                 libnet_join_set_error_string(mem_ctx, r,
1528                         "Unable to open secrets database");
1529                 return WERR_CAN_NOT_COMPLETE;
1530         }
1531
1532         return WERR_OK;
1533 }
1534
1535 /****************************************************************
1536 ****************************************************************/
1537
1538 static void libnet_join_add_dom_rids_to_builtins(struct dom_sid *domain_sid)
1539 {
1540         NTSTATUS status;
1541
1542         /* Try adding dom admins to builtin\admins. Only log failures. */
1543         status = create_builtin_administrators(domain_sid);
1544         if (NT_STATUS_EQUAL(status, NT_STATUS_PROTOCOL_UNREACHABLE)) {
1545                 DEBUG(10,("Unable to auto-add domain administrators to "
1546                           "BUILTIN\\Administrators during join because "
1547                           "winbindd must be running."));
1548         } else if (!NT_STATUS_IS_OK(status)) {
1549                 DEBUG(5, ("Failed to auto-add domain administrators to "
1550                           "BUILTIN\\Administrators during join: %s\n",
1551                           nt_errstr(status)));
1552         }
1553
1554         /* Try adding dom users to builtin\users. Only log failures. */
1555         status = create_builtin_users(domain_sid);
1556         if (NT_STATUS_EQUAL(status, NT_STATUS_PROTOCOL_UNREACHABLE)) {
1557                 DEBUG(10,("Unable to auto-add domain users to BUILTIN\\users "
1558                           "during join because winbindd must be running."));
1559         } else if (!NT_STATUS_IS_OK(status)) {
1560                 DEBUG(5, ("Failed to auto-add domain administrators to "
1561                           "BUILTIN\\Administrators during join: %s\n",
1562                           nt_errstr(status)));
1563         }
1564 }
1565
1566 /****************************************************************
1567 ****************************************************************/
1568
1569 static WERROR libnet_join_post_processing(TALLOC_CTX *mem_ctx,
1570                                           struct libnet_JoinCtx *r)
1571 {
1572         WERROR werr;
1573
1574         if (!W_ERROR_IS_OK(r->out.result)) {
1575                 return r->out.result;
1576         }
1577
1578         werr = do_JoinConfig(r);
1579         if (!W_ERROR_IS_OK(werr)) {
1580                 return werr;
1581         }
1582
1583         if (!(r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE)) {
1584                 return WERR_OK;
1585         }
1586
1587         saf_join_store(r->out.netbios_domain_name, r->in.dc_name);
1588         if (r->out.dns_domain_name) {
1589                 saf_join_store(r->out.dns_domain_name, r->in.dc_name);
1590         }
1591
1592 #ifdef WITH_ADS
1593         if (r->out.domain_is_ad &&
1594             !(r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_UNSECURE)) {
1595                 ADS_STATUS ads_status;
1596
1597                 ads_status  = libnet_join_post_processing_ads(mem_ctx, r);
1598                 if (!ADS_ERR_OK(ads_status)) {
1599                         return WERR_GENERAL_FAILURE;
1600                 }
1601         }
1602 #endif /* WITH_ADS */
1603
1604         libnet_join_add_dom_rids_to_builtins(r->out.domain_sid);
1605
1606         return WERR_OK;
1607 }
1608
1609 /****************************************************************
1610 ****************************************************************/
1611
1612 static int libnet_destroy_JoinCtx(struct libnet_JoinCtx *r)
1613 {
1614         const char *krb5_cc_env = NULL;
1615
1616         if (r->in.ads) {
1617                 ads_destroy(&r->in.ads);
1618         }
1619
1620         krb5_cc_env = getenv(KRB5_ENV_CCNAME);
1621         if (krb5_cc_env && StrCaseCmp(krb5_cc_env, "MEMORY:libnetjoin")) {
1622                 unsetenv(KRB5_ENV_CCNAME);
1623         }
1624
1625         return 0;
1626 }
1627
1628 /****************************************************************
1629 ****************************************************************/
1630
1631 static int libnet_destroy_UnjoinCtx(struct libnet_UnjoinCtx *r)
1632 {
1633         const char *krb5_cc_env = NULL;
1634
1635         if (r->in.ads) {
1636                 ads_destroy(&r->in.ads);
1637         }
1638
1639         krb5_cc_env = getenv(KRB5_ENV_CCNAME);
1640         if (krb5_cc_env && StrCaseCmp(krb5_cc_env, "MEMORY:libnetjoin")) {
1641                 unsetenv(KRB5_ENV_CCNAME);
1642         }
1643
1644         return 0;
1645 }
1646
1647 /****************************************************************
1648 ****************************************************************/
1649
1650 WERROR libnet_init_JoinCtx(TALLOC_CTX *mem_ctx,
1651                            struct libnet_JoinCtx **r)
1652 {
1653         struct libnet_JoinCtx *ctx;
1654         const char *krb5_cc_env = NULL;
1655
1656         ctx = talloc_zero(mem_ctx, struct libnet_JoinCtx);
1657         if (!ctx) {
1658                 return WERR_NOMEM;
1659         }
1660
1661         talloc_set_destructor(ctx, libnet_destroy_JoinCtx);
1662
1663         ctx->in.machine_name = talloc_strdup(mem_ctx, global_myname());
1664         W_ERROR_HAVE_NO_MEMORY(ctx->in.machine_name);
1665
1666         krb5_cc_env = getenv(KRB5_ENV_CCNAME);
1667         if (!krb5_cc_env || (strlen(krb5_cc_env) == 0)) {
1668                 krb5_cc_env = talloc_strdup(mem_ctx, "MEMORY:libnetjoin");
1669                 W_ERROR_HAVE_NO_MEMORY(krb5_cc_env);
1670                 setenv(KRB5_ENV_CCNAME, krb5_cc_env, 1);
1671         }
1672
1673         ctx->in.secure_channel_type = SEC_CHAN_WKSTA;
1674
1675         *r = ctx;
1676
1677         return WERR_OK;
1678 }
1679
1680 /****************************************************************
1681 ****************************************************************/
1682
1683 WERROR libnet_init_UnjoinCtx(TALLOC_CTX *mem_ctx,
1684                              struct libnet_UnjoinCtx **r)
1685 {
1686         struct libnet_UnjoinCtx *ctx;
1687         const char *krb5_cc_env = NULL;
1688
1689         ctx = talloc_zero(mem_ctx, struct libnet_UnjoinCtx);
1690         if (!ctx) {
1691                 return WERR_NOMEM;
1692         }
1693
1694         talloc_set_destructor(ctx, libnet_destroy_UnjoinCtx);
1695
1696         ctx->in.machine_name = talloc_strdup(mem_ctx, global_myname());
1697         W_ERROR_HAVE_NO_MEMORY(ctx->in.machine_name);
1698
1699         krb5_cc_env = getenv(KRB5_ENV_CCNAME);
1700         if (!krb5_cc_env || (strlen(krb5_cc_env) == 0)) {
1701                 krb5_cc_env = talloc_strdup(mem_ctx, "MEMORY:libnetjoin");
1702                 W_ERROR_HAVE_NO_MEMORY(krb5_cc_env);
1703                 setenv(KRB5_ENV_CCNAME, krb5_cc_env, 1);
1704         }
1705
1706         *r = ctx;
1707
1708         return WERR_OK;
1709 }
1710
1711 /****************************************************************
1712 ****************************************************************/
1713
1714 static WERROR libnet_join_check_config(TALLOC_CTX *mem_ctx,
1715                                        struct libnet_JoinCtx *r)
1716 {
1717         bool valid_security = false;
1718         bool valid_workgroup = false;
1719         bool valid_realm = false;
1720
1721         /* check if configuration is already set correctly */
1722
1723         valid_workgroup = strequal(lp_workgroup(), r->out.netbios_domain_name);
1724
1725         switch (r->out.domain_is_ad) {
1726                 case false:
1727                         valid_security = (lp_security() == SEC_DOMAIN);
1728                         if (valid_workgroup && valid_security) {
1729                                 /* nothing to be done */
1730                                 return WERR_OK;
1731                         }
1732                         break;
1733                 case true:
1734                         valid_realm = strequal(lp_realm(), r->out.dns_domain_name);
1735                         switch (lp_security()) {
1736                         case SEC_DOMAIN:
1737                         case SEC_ADS:
1738                                 valid_security = true;
1739                         }
1740
1741                         if (valid_workgroup && valid_realm && valid_security) {
1742                                 /* nothing to be done */
1743                                 return WERR_OK;
1744                         }
1745                         break;
1746         }
1747
1748         /* check if we are supposed to manipulate configuration */
1749
1750         if (!r->in.modify_config) {
1751
1752                 char *wrong_conf = talloc_strdup(mem_ctx, "");
1753
1754                 if (!valid_workgroup) {
1755                         wrong_conf = talloc_asprintf_append(wrong_conf,
1756                                 "\"workgroup\" set to '%s', should be '%s'",
1757                                 lp_workgroup(), r->out.netbios_domain_name);
1758                         W_ERROR_HAVE_NO_MEMORY(wrong_conf);
1759                 }
1760
1761                 if (!valid_realm) {
1762                         wrong_conf = talloc_asprintf_append(wrong_conf,
1763                                 "\"realm\" set to '%s', should be '%s'",
1764                                 lp_realm(), r->out.dns_domain_name);
1765                         W_ERROR_HAVE_NO_MEMORY(wrong_conf);
1766                 }
1767
1768                 if (!valid_security) {
1769                         const char *sec = NULL;
1770                         switch (lp_security()) {
1771                         case SEC_SHARE: sec = "share"; break;
1772                         case SEC_USER:  sec = "user"; break;
1773                         case SEC_DOMAIN: sec = "domain"; break;
1774                         case SEC_ADS: sec = "ads"; break;
1775                         }
1776                         wrong_conf = talloc_asprintf_append(wrong_conf,
1777                                 "\"security\" set to '%s', should be %s",
1778                                 sec, r->out.domain_is_ad ?
1779                                 "either 'domain' or 'ads'" : "'domain'");
1780                         W_ERROR_HAVE_NO_MEMORY(wrong_conf);
1781                 }
1782
1783                 libnet_join_set_error_string(mem_ctx, r,
1784                         "Invalid configuration (%s) and configuration modification "
1785                         "was not requested", wrong_conf);
1786                 return WERR_CAN_NOT_COMPLETE;
1787         }
1788
1789         /* check if we are able to manipulate configuration */
1790
1791         if (!lp_config_backend_is_registry()) {
1792                 libnet_join_set_error_string(mem_ctx, r,
1793                         "Configuration manipulation requested but not "
1794                         "supported by backend");
1795                 return WERR_NOT_SUPPORTED;
1796         }
1797
1798         return WERR_OK;
1799 }
1800
1801 /****************************************************************
1802 ****************************************************************/
1803
1804 static WERROR libnet_DomainJoin(TALLOC_CTX *mem_ctx,
1805                                 struct libnet_JoinCtx *r)
1806 {
1807         NTSTATUS status;
1808         WERROR werr;
1809         struct cli_state *cli = NULL;
1810 #ifdef WITH_ADS
1811         ADS_STATUS ads_status;
1812 #endif /* WITH_ADS */
1813
1814         if (!r->in.dc_name) {
1815                 struct netr_DsRGetDCNameInfo *info;
1816                 const char *dc;
1817                 status = dsgetdcname(mem_ctx,
1818                                      r->in.msg_ctx,
1819                                      r->in.domain_name,
1820                                      NULL,
1821                                      NULL,
1822                                      DS_FORCE_REDISCOVERY |
1823                                      DS_DIRECTORY_SERVICE_REQUIRED |
1824                                      DS_WRITABLE_REQUIRED |
1825                                      DS_RETURN_DNS_NAME,
1826                                      &info);
1827                 if (!NT_STATUS_IS_OK(status)) {
1828                         libnet_join_set_error_string(mem_ctx, r,
1829                                 "failed to find DC for domain %s",
1830                                 r->in.domain_name,
1831                                 get_friendly_nt_error_msg(status));
1832                         return WERR_DCNOTFOUND;
1833                 }
1834
1835                 dc = strip_hostname(info->dc_unc);
1836                 r->in.dc_name = talloc_strdup(mem_ctx, dc);
1837                 W_ERROR_HAVE_NO_MEMORY(r->in.dc_name);
1838         }
1839
1840         status = libnet_join_lookup_dc_rpc(mem_ctx, r, &cli);
1841         if (!NT_STATUS_IS_OK(status)) {
1842                 libnet_join_set_error_string(mem_ctx, r,
1843                         "failed to lookup DC info for domain '%s' over rpc: %s",
1844                         r->in.domain_name, get_friendly_nt_error_msg(status));
1845                 return ntstatus_to_werror(status);
1846         }
1847
1848         werr = libnet_join_check_config(mem_ctx, r);
1849         if (!W_ERROR_IS_OK(werr)) {
1850                 goto done;
1851         }
1852
1853 #ifdef WITH_ADS
1854         if (r->out.domain_is_ad && r->in.account_ou &&
1855             !(r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_UNSECURE)) {
1856
1857                 ads_status = libnet_join_connect_ads(mem_ctx, r);
1858                 if (!ADS_ERR_OK(ads_status)) {
1859                         return WERR_DEFAULT_JOIN_REQUIRED;
1860                 }
1861
1862                 ads_status = libnet_join_precreate_machine_acct(mem_ctx, r);
1863                 if (!ADS_ERR_OK(ads_status)) {
1864                         libnet_join_set_error_string(mem_ctx, r,
1865                                 "failed to precreate account in ou %s: %s",
1866                                 r->in.account_ou,
1867                                 ads_errstr(ads_status));
1868                         return WERR_DEFAULT_JOIN_REQUIRED;
1869                 }
1870
1871                 r->in.join_flags &= ~WKSSVC_JOIN_FLAGS_ACCOUNT_CREATE;
1872         }
1873 #endif /* WITH_ADS */
1874
1875         if ((r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_UNSECURE) &&
1876             (r->in.join_flags & WKSSVC_JOIN_FLAGS_MACHINE_PWD_PASSED)) {
1877                 status = libnet_join_joindomain_rpc_unsecure(mem_ctx, r, cli);
1878         } else {
1879                 status = libnet_join_joindomain_rpc(mem_ctx, r, cli);
1880         }
1881         if (!NT_STATUS_IS_OK(status)) {
1882                 libnet_join_set_error_string(mem_ctx, r,
1883                         "failed to join domain '%s' over rpc: %s",
1884                         r->in.domain_name, get_friendly_nt_error_msg(status));
1885                 if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
1886                         return WERR_SETUP_ALREADY_JOINED;
1887                 }
1888                 werr = ntstatus_to_werror(status);
1889                 goto done;
1890         }
1891
1892         if (!libnet_join_joindomain_store_secrets(mem_ctx, r)) {
1893                 werr = WERR_SETUP_NOT_JOINED;
1894                 goto done;
1895         }
1896
1897         werr = WERR_OK;
1898
1899  done:
1900         if (cli) {
1901                 cli_shutdown(cli);
1902         }
1903
1904         return werr;
1905 }
1906
1907 /****************************************************************
1908 ****************************************************************/
1909
1910 static WERROR libnet_join_rollback(TALLOC_CTX *mem_ctx,
1911                                    struct libnet_JoinCtx *r)
1912 {
1913         WERROR werr;
1914         struct libnet_UnjoinCtx *u = NULL;
1915
1916         werr = libnet_init_UnjoinCtx(mem_ctx, &u);
1917         if (!W_ERROR_IS_OK(werr)) {
1918                 return werr;
1919         }
1920
1921         u->in.debug             = r->in.debug;
1922         u->in.dc_name           = r->in.dc_name;
1923         u->in.domain_name       = r->in.domain_name;
1924         u->in.admin_account     = r->in.admin_account;
1925         u->in.admin_password    = r->in.admin_password;
1926         u->in.modify_config     = r->in.modify_config;
1927         u->in.unjoin_flags      = WKSSVC_JOIN_FLAGS_JOIN_TYPE |
1928                                   WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE;
1929
1930         werr = libnet_Unjoin(mem_ctx, u);
1931         TALLOC_FREE(u);
1932
1933         return werr;
1934 }
1935
1936 /****************************************************************
1937 ****************************************************************/
1938
1939 WERROR libnet_Join(TALLOC_CTX *mem_ctx,
1940                    struct libnet_JoinCtx *r)
1941 {
1942         WERROR werr;
1943
1944         if (r->in.debug) {
1945                 LIBNET_JOIN_IN_DUMP_CTX(mem_ctx, r);
1946         }
1947
1948         werr = libnet_join_pre_processing(mem_ctx, r);
1949         if (!W_ERROR_IS_OK(werr)) {
1950                 goto done;
1951         }
1952
1953         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1954                 werr = libnet_DomainJoin(mem_ctx, r);
1955                 if (!W_ERROR_IS_OK(werr)) {
1956                         goto done;
1957                 }
1958         }
1959
1960         werr = libnet_join_post_processing(mem_ctx, r);
1961         if (!W_ERROR_IS_OK(werr)) {
1962                 goto done;
1963         }
1964
1965         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1966                 werr = libnet_join_post_verify(mem_ctx, r);
1967                 if (!W_ERROR_IS_OK(werr)) {
1968                         libnet_join_rollback(mem_ctx, r);
1969                 }
1970         }
1971
1972  done:
1973         r->out.result = werr;
1974
1975         if (r->in.debug) {
1976                 LIBNET_JOIN_OUT_DUMP_CTX(mem_ctx, r);
1977         }
1978         return werr;
1979 }
1980
1981 /****************************************************************
1982 ****************************************************************/
1983
1984 static WERROR libnet_DomainUnjoin(TALLOC_CTX *mem_ctx,
1985                                   struct libnet_UnjoinCtx *r)
1986 {
1987         NTSTATUS status;
1988
1989         if (!r->in.domain_sid) {
1990                 struct dom_sid sid;
1991                 if (!secrets_fetch_domain_sid(lp_workgroup(), &sid)) {
1992                         libnet_unjoin_set_error_string(mem_ctx, r,
1993                                 "Unable to fetch domain sid: are we joined?");
1994                         return WERR_SETUP_NOT_JOINED;
1995                 }
1996                 r->in.domain_sid = sid_dup_talloc(mem_ctx, &sid);
1997                 W_ERROR_HAVE_NO_MEMORY(r->in.domain_sid);
1998         }
1999
2000         if (!(r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE) &&
2001             !r->in.delete_machine_account) {
2002                 libnet_join_unjoindomain_remove_secrets(mem_ctx, r);
2003                 return WERR_OK;
2004         }
2005
2006         if (!r->in.dc_name) {
2007                 struct netr_DsRGetDCNameInfo *info;
2008                 const char *dc;
2009                 status = dsgetdcname(mem_ctx,
2010                                      r->in.msg_ctx,
2011                                      r->in.domain_name,
2012                                      NULL,
2013                                      NULL,
2014                                      DS_DIRECTORY_SERVICE_REQUIRED |
2015                                      DS_WRITABLE_REQUIRED |
2016                                      DS_RETURN_DNS_NAME,
2017                                      &info);
2018                 if (!NT_STATUS_IS_OK(status)) {
2019                         libnet_unjoin_set_error_string(mem_ctx, r,
2020                                 "failed to find DC for domain %s",
2021                                 r->in.domain_name,
2022                                 get_friendly_nt_error_msg(status));
2023                         return WERR_DCNOTFOUND;
2024                 }
2025
2026                 dc = strip_hostname(info->dc_unc);
2027                 r->in.dc_name = talloc_strdup(mem_ctx, dc);
2028                 W_ERROR_HAVE_NO_MEMORY(r->in.dc_name);
2029         }
2030
2031 #ifdef WITH_ADS
2032         /* for net ads leave, try to delete the account.  If it works,
2033            no sense in disabling.  If it fails, we can still try to
2034            disable it. jmcd */
2035
2036         if (r->in.delete_machine_account) {
2037                 ADS_STATUS ads_status;
2038                 ads_status = libnet_unjoin_connect_ads(mem_ctx, r);
2039                 if (ADS_ERR_OK(ads_status)) {
2040                         /* dirty hack */
2041                         r->out.dns_domain_name =
2042                                 talloc_strdup(mem_ctx,
2043                                               r->in.ads->server.realm);
2044                         ads_status =
2045                                 libnet_unjoin_remove_machine_acct(mem_ctx, r);
2046                 }
2047                 if (!ADS_ERR_OK(ads_status)) {
2048                         libnet_unjoin_set_error_string(mem_ctx, r,
2049                                 "failed to remove machine account from AD: %s",
2050                                 ads_errstr(ads_status));
2051                 } else {
2052                         r->out.deleted_machine_account = true;
2053                         W_ERROR_HAVE_NO_MEMORY(r->out.dns_domain_name);
2054                         libnet_join_unjoindomain_remove_secrets(mem_ctx, r);
2055                         return WERR_OK;
2056                 }
2057         }
2058 #endif /* WITH_ADS */
2059
2060         /* The WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE flag really means
2061            "disable".  */
2062         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE) {
2063                 status = libnet_join_unjoindomain_rpc(mem_ctx, r);
2064                 if (!NT_STATUS_IS_OK(status)) {
2065                         libnet_unjoin_set_error_string(mem_ctx, r,
2066                                 "failed to disable machine account via rpc: %s",
2067                                 get_friendly_nt_error_msg(status));
2068                         if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
2069                                 return WERR_SETUP_NOT_JOINED;
2070                         }
2071                         return ntstatus_to_werror(status);
2072                 }
2073
2074                 r->out.disabled_machine_account = true;
2075         }
2076
2077         /* If disable succeeded or was not requested at all, we
2078            should be getting rid of our end of things */
2079
2080         libnet_join_unjoindomain_remove_secrets(mem_ctx, r);
2081
2082         return WERR_OK;
2083 }
2084
2085 /****************************************************************
2086 ****************************************************************/
2087
2088 static WERROR libnet_unjoin_pre_processing(TALLOC_CTX *mem_ctx,
2089                                            struct libnet_UnjoinCtx *r)
2090 {
2091         if (!r->in.domain_name) {
2092                 libnet_unjoin_set_error_string(mem_ctx, r,
2093                         "No domain name defined");
2094                 return WERR_INVALID_PARAM;
2095         }
2096
2097         if (!libnet_parse_domain_dc(mem_ctx, r->in.domain_name,
2098                                     &r->in.domain_name,
2099                                     &r->in.dc_name)) {
2100                 libnet_unjoin_set_error_string(mem_ctx, r,
2101                         "Failed to parse domain name");
2102                 return WERR_INVALID_PARAM;
2103         }
2104
2105         if (IS_DC) {
2106                 return WERR_SETUP_DOMAIN_CONTROLLER;
2107         }
2108
2109         if (!secrets_init()) {
2110                 libnet_unjoin_set_error_string(mem_ctx, r,
2111                         "Unable to open secrets database");
2112                 return WERR_CAN_NOT_COMPLETE;
2113         }
2114
2115         return WERR_OK;
2116 }
2117
2118 /****************************************************************
2119 ****************************************************************/
2120
2121 static WERROR libnet_unjoin_post_processing(TALLOC_CTX *mem_ctx,
2122                                             struct libnet_UnjoinCtx *r)
2123 {
2124         saf_delete(r->out.netbios_domain_name);
2125         saf_delete(r->out.dns_domain_name);
2126
2127         return libnet_unjoin_config(r);
2128 }
2129
2130 /****************************************************************
2131 ****************************************************************/
2132
2133 WERROR libnet_Unjoin(TALLOC_CTX *mem_ctx,
2134                      struct libnet_UnjoinCtx *r)
2135 {
2136         WERROR werr;
2137
2138         if (r->in.debug) {
2139                 LIBNET_UNJOIN_IN_DUMP_CTX(mem_ctx, r);
2140         }
2141
2142         werr = libnet_unjoin_pre_processing(mem_ctx, r);
2143         if (!W_ERROR_IS_OK(werr)) {
2144                 goto done;
2145         }
2146
2147         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
2148                 werr = libnet_DomainUnjoin(mem_ctx, r);
2149                 if (!W_ERROR_IS_OK(werr)) {
2150                         libnet_unjoin_config(r);
2151                         goto done;
2152                 }
2153         }
2154
2155         werr = libnet_unjoin_post_processing(mem_ctx, r);
2156         if (!W_ERROR_IS_OK(werr)) {
2157                 goto done;
2158         }
2159
2160  done:
2161         r->out.result = werr;
2162
2163         if (r->in.debug) {
2164                 LIBNET_UNJOIN_OUT_DUMP_CTX(mem_ctx, r);
2165         }
2166
2167         return werr;
2168 }