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
  24 /****************************************************************
  25 ****************************************************************/
  26
  27 #define LIBNET_JOIN_DUMP_CTX(ctx, r, f) \
  28         do { \
  29                 char *str = NULL; \
  30                 str = NDR_PRINT_FUNCTION_STRING(ctx, libnet_JoinCtx, f, r); \
  31                 DEBUG(1,("libnet_Join:\n%s", str)); \
  32                 TALLOC_FREE(str); \
  33         } while (0)
  34
  35 #define LIBNET_JOIN_IN_DUMP_CTX(ctx, r) \
  36         LIBNET_JOIN_DUMP_CTX(ctx, r, NDR_IN | NDR_SET_VALUES)
  37 #define LIBNET_JOIN_OUT_DUMP_CTX(ctx, r) \
  38         LIBNET_JOIN_DUMP_CTX(ctx, r, NDR_OUT)
  39
  40 #define LIBNET_UNJOIN_DUMP_CTX(ctx, r, f) \
  41         do { \
  42                 char *str = NULL; \
  43                 str = NDR_PRINT_FUNCTION_STRING(ctx, libnet_UnjoinCtx, f, r); \
  44                 DEBUG(1,("libnet_Unjoin:\n%s", str)); \
  45                 TALLOC_FREE(str); \
  46         } while (0)
  47
  48 #define LIBNET_UNJOIN_IN_DUMP_CTX(ctx, r) \
  49         LIBNET_UNJOIN_DUMP_CTX(ctx, r, NDR_IN | NDR_SET_VALUES)
  50 #define LIBNET_UNJOIN_OUT_DUMP_CTX(ctx, r) \
  51         LIBNET_UNJOIN_DUMP_CTX(ctx, r, NDR_OUT)
  52
  53 #define W_ERROR_NOT_OK_GOTO_DONE(x) do { \
  54         if (!W_ERROR_IS_OK(x)) {\
  55                 goto done;\
  56         }\
  57 } while (0)
  58
  59 /****************************************************************
  60 ****************************************************************/
  61
  62 static void libnet_join_set_error_string(TALLOC_CTX *mem_ctx,
  63                                          struct libnet_JoinCtx *r,
  64                                          const char *format, ...)
  65 {
  66         va_list args;
  67
  68         if (r->out.error_string) {
  69                 return;
  70         }
  71
  72         va_start(args, format);
  73         r->out.error_string = talloc_vasprintf(mem_ctx, format, args);
  74         va_end(args);
  75 }
  76
  77 /****************************************************************
  78 ****************************************************************/
  79
  80 static void libnet_unjoin_set_error_string(TALLOC_CTX *mem_ctx,
  81                                            struct libnet_UnjoinCtx *r,
  82                                            const char *format, ...)
  83 {
  84         va_list args;
  85
  86         if (r->out.error_string) {
  87                 return;
  88         }
  89
  90         va_start(args, format);
  91         r->out.error_string = talloc_vasprintf(mem_ctx, format, args);
  92         va_end(args);
  93 }
  94
  95 #ifdef WITH_ADS
  96
  97 /****************************************************************
  98 ****************************************************************/
  99
 100 static ADS_STATUS libnet_connect_ads(const char *dns_domain_name,
 101                                      const char *netbios_domain_name,
 102                                      const char *dc_name,
 103                                      const char *user_name,
 104                                      const char *password,
 105                                      ADS_STRUCT **ads)
 106 {
 107         ADS_STATUS status;
 108         ADS_STRUCT *my_ads = NULL;
 109
 110         my_ads = ads_init(dns_domain_name,
 111                           netbios_domain_name,
 112                           dc_name);
 113         if (!my_ads) {
 114                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 115         }
 116
 117         if (user_name) {
 118                 SAFE_FREE(my_ads->auth.user_name);
 119                 my_ads->auth.user_name = SMB_STRDUP(user_name);
 120         }
 121
 122         if (password) {
 123                 SAFE_FREE(my_ads->auth.password);
 124                 my_ads->auth.password = SMB_STRDUP(password);
 125         }
 126
 127         status = ads_connect_user_creds(my_ads);
 128         if (!ADS_ERR_OK(status)) {
 129                 ads_destroy(&my_ads);
 130                 return status;
 131         }
 132
 133         *ads = my_ads;
 134         return ADS_SUCCESS;
 135 }
 136
 137 /****************************************************************
 138 ****************************************************************/
 139
 140 static ADS_STATUS libnet_join_connect_ads(TALLOC_CTX *mem_ctx,
 141                                           struct libnet_JoinCtx *r)
 142 {
 143         ADS_STATUS status;
 144
 145         status = libnet_connect_ads(r->out.dns_domain_name,
 146                                     r->out.netbios_domain_name,
 147                                     r->in.dc_name,
 148                                     r->in.admin_account,
 149                                     r->in.admin_password,
 150                                     &r->in.ads);
 151         if (!ADS_ERR_OK(status)) {
 152                 libnet_join_set_error_string(mem_ctx, r,
 153                         "failed to connect to AD: %s",
 154                         ads_errstr(status));
 155                 return status;
 156         }
 157
 158         if (!r->out.netbios_domain_name) {
 159                 r->out.netbios_domain_name = talloc_strdup(mem_ctx,
 160                                                            r->in.ads->server.workgroup);
 161                 ADS_ERROR_HAVE_NO_MEMORY(r->out.netbios_domain_name);
 162         }
 163
 164         if (!r->out.dns_domain_name) {
 165                 r->out.dns_domain_name = talloc_strdup(mem_ctx,
 166                                                        r->in.ads->config.realm);
 167                 ADS_ERROR_HAVE_NO_MEMORY(r->out.dns_domain_name);
 168         }
 169
 170         r->out.domain_is_ad = true;
 171
 172         return ADS_SUCCESS;
 173 }
 174
 175 /****************************************************************
 176 ****************************************************************/
 177
 178 static ADS_STATUS libnet_unjoin_connect_ads(TALLOC_CTX *mem_ctx,
 179                                             struct libnet_UnjoinCtx *r)
 180 {
 181         ADS_STATUS status;
 182
 183         status = libnet_connect_ads(r->in.domain_name,
 184                                     r->in.domain_name,
 185                                     r->in.dc_name,
 186                                     r->in.admin_account,
 187                                     r->in.admin_password,
 188                                     &r->in.ads);
 189         if (!ADS_ERR_OK(status)) {
 190                 libnet_unjoin_set_error_string(mem_ctx, r,
 191                         "failed to connect to AD: %s",
 192                         ads_errstr(status));
 193         }
 194
 195         return status;
 196 }
 197
 198 /****************************************************************
 199  join a domain using ADS (LDAP mods)
 200 ****************************************************************/
 201
 202 static ADS_STATUS libnet_join_precreate_machine_acct(TALLOC_CTX *mem_ctx,
 203                                                      struct libnet_JoinCtx *r)
 204 {
 205         ADS_STATUS status;
 206         LDAPMessage *res = NULL;
 207         const char *attrs[] = { "dn", NULL };
 208         bool moved = false;
 209
 210         status = ads_check_ou_dn(mem_ctx, r->in.ads, &r->in.account_ou);
 211         if (!ADS_ERR_OK(status)) {
 212                 return status;
 213         }
 214
 215         status = ads_search_dn(r->in.ads, &res, r->in.account_ou, attrs);
 216         if (!ADS_ERR_OK(status)) {
 217                 return status;
 218         }
 219
 220         if (ads_count_replies(r->in.ads, res) != 1) {
 221                 ads_msgfree(r->in.ads, res);
 222                 return ADS_ERROR_LDAP(LDAP_NO_SUCH_OBJECT);
 223         }
 224
 225         ads_msgfree(r->in.ads, res);
 226
 227         /* Attempt to create the machine account and bail if this fails.
 228            Assume that the admin wants exactly what they requested */
 229
 230         status = ads_create_machine_acct(r->in.ads,
 231                                          r->in.machine_name,
 232                                          r->in.account_ou);
 233
 234         if (ADS_ERR_OK(status)) {
 235                 DEBUG(1,("machine account creation created\n"));
 236                 return status;
 237         } else  if ((status.error_type == ENUM_ADS_ERROR_LDAP) &&
 238                     (status.err.rc == LDAP_ALREADY_EXISTS)) {
 239                 status = ADS_SUCCESS;
 240         }
 241
 242         if (!ADS_ERR_OK(status)) {
 243                 DEBUG(1,("machine account creation failed\n"));
 244                 return status;
 245         }
 246
 247         status = ads_move_machine_acct(r->in.ads,
 248                                        r->in.machine_name,
 249                                        r->in.account_ou,
 250                                        &moved);
 251         if (!ADS_ERR_OK(status)) {
 252                 DEBUG(1,("failure to locate/move pre-existing "
 253                         "machine account\n"));
 254                 return status;
 255         }
 256
 257         DEBUG(1,("The machine account %s the specified OU.\n",
 258                 moved ? "was moved into" : "already exists in"));
 259
 260         return status;
 261 }
 262
 263 /****************************************************************
 264 ****************************************************************/
 265
 266 static ADS_STATUS libnet_unjoin_remove_machine_acct(TALLOC_CTX *mem_ctx,
 267                                                     struct libnet_UnjoinCtx *r)
 268 {
 269         ADS_STATUS status;
 270
 271         if (!r->in.ads) {
 272                 return libnet_unjoin_connect_ads(mem_ctx, r);
 273         }
 274
 275         status = ads_leave_realm(r->in.ads, r->in.machine_name);
 276         if (!ADS_ERR_OK(status)) {
 277                 libnet_unjoin_set_error_string(mem_ctx, r,
 278                         "failed to leave realm: %s",
 279                         ads_errstr(status));
 280                 return status;
 281         }
 282
 283         return ADS_SUCCESS;
 284 }
 285
 286 /****************************************************************
 287 ****************************************************************/
 288
 289 static ADS_STATUS libnet_join_find_machine_acct(TALLOC_CTX *mem_ctx,
 290                                                 struct libnet_JoinCtx *r)
 291 {
 292         ADS_STATUS status;
 293         LDAPMessage *res = NULL;
 294         char *dn = NULL;
 295
 296         if (!r->in.machine_name) {
 297                 return ADS_ERROR(LDAP_NO_MEMORY);
 298         }
 299
 300         status = ads_find_machine_acct(r->in.ads,
 301                                        &res,
 302                                        r->in.machine_name);
 303         if (!ADS_ERR_OK(status)) {
 304                 return status;
 305         }
 306
 307         if (ads_count_replies(r->in.ads, res) != 1) {
 308                 status = ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 309                 goto done;
 310         }
 311
 312         dn = ads_get_dn(r->in.ads, res);
 313         if (!dn) {
 314                 status = ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 315                 goto done;
 316         }
 317
 318         r->out.dn = talloc_strdup(mem_ctx, dn);
 319         if (!r->out.dn) {
 320                 status = ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 321                 goto done;
 322         }
 323
 324  done:
 325         ads_msgfree(r->in.ads, res);
 326         ads_memfree(r->in.ads, dn);
 327
 328         return status;
 329 }
 330
 331 /****************************************************************
 332  Set a machines dNSHostName and servicePrincipalName attributes
 333 ****************************************************************/
 334
 335 static ADS_STATUS libnet_join_set_machine_spn(TALLOC_CTX *mem_ctx,
 336                                               struct libnet_JoinCtx *r)
 337 {
 338         ADS_STATUS status;
 339         ADS_MODLIST mods;
 340         fstring my_fqdn;
 341         const char *spn_array[3] = {NULL, NULL, NULL};
 342         char *spn = NULL;
 343
 344         /* Find our DN */
 345
 346         status = libnet_join_find_machine_acct(mem_ctx, r);
 347         if (!ADS_ERR_OK(status)) {
 348                 return status;
 349         }
 350
 351         /* Windows only creates HOST/shortname & HOST/fqdn. */
 352
 353         spn = talloc_asprintf(mem_ctx, "HOST/%s", r->in.machine_name);
 354         if (!spn) {
 355                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 356         }
 357         strupper_m(spn);
 358         spn_array[0] = spn;
 359
 360         if (name_to_fqdn(my_fqdn, r->in.machine_name) &&
 361             !strequal(my_fqdn, r->in.machine_name)) {
 362
 363                 strlower_m(my_fqdn);
 364                 spn = talloc_asprintf(mem_ctx, "HOST/%s", my_fqdn);
 365                 if (!spn) {
 366                         return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 367                 }
 368                 spn_array[1] = spn;
 369         }
 370
 371         mods = ads_init_mods(mem_ctx);
 372         if (!mods) {
 373                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 374         }
 375
 376         /* fields of primary importance */
 377
 378         status = ads_mod_str(mem_ctx, &mods, "dNSHostName", my_fqdn);
 379         if (!ADS_ERR_OK(status)) {
 380                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 381         }
 382
 383         status = ads_mod_strlist(mem_ctx, &mods, "servicePrincipalName",
 384                                  spn_array);
 385         if (!ADS_ERR_OK(status)) {
 386                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 387         }
 388
 389         return ads_gen_mod(r->in.ads, r->out.dn, mods);
 390 }
 391
 392 /****************************************************************
 393 ****************************************************************/
 394
 395 static ADS_STATUS libnet_join_set_machine_upn(TALLOC_CTX *mem_ctx,
 396                                               struct libnet_JoinCtx *r)
 397 {
 398         ADS_STATUS status;
 399         ADS_MODLIST mods;
 400
 401         if (!r->in.create_upn) {
 402                 return ADS_SUCCESS;
 403         }
 404
 405         /* Find our DN */
 406
 407         status = libnet_join_find_machine_acct(mem_ctx, r);
 408         if (!ADS_ERR_OK(status)) {
 409                 return status;
 410         }
 411
 412         if (!r->in.upn) {
 413                 r->in.upn = talloc_asprintf(mem_ctx,
 414                                             "host/%s@%s",
 415                                             r->in.machine_name,
 416                                             r->out.dns_domain_name);
 417                 if (!r->in.upn) {
 418                         return ADS_ERROR(LDAP_NO_MEMORY);
 419                 }
 420         }
 421
 422         /* now do the mods */
 423
 424         mods = ads_init_mods(mem_ctx);
 425         if (!mods) {
 426                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 427         }
 428
 429         /* fields of primary importance */
 430
 431         status = ads_mod_str(mem_ctx, &mods, "userPrincipalName", r->in.upn);
 432         if (!ADS_ERR_OK(status)) {
 433                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 434         }
 435
 436         return ads_gen_mod(r->in.ads, r->out.dn, mods);
 437 }
 438
 439
 440 /****************************************************************
 441 ****************************************************************/
 442
 443 static ADS_STATUS libnet_join_set_os_attributes(TALLOC_CTX *mem_ctx,
 444                                                 struct libnet_JoinCtx *r)
 445 {
 446         ADS_STATUS status;
 447         ADS_MODLIST mods;
 448         char *os_sp = NULL;
 449
 450         if (!r->in.os_name || !r->in.os_version ) {
 451                 return ADS_SUCCESS;
 452         }
 453
 454         /* Find our DN */
 455
 456         status = libnet_join_find_machine_acct(mem_ctx, r);
 457         if (!ADS_ERR_OK(status)) {
 458                 return status;
 459         }
 460
 461         /* now do the mods */
 462
 463         mods = ads_init_mods(mem_ctx);
 464         if (!mods) {
 465                 return ADS_ERROR(LDAP_NO_MEMORY);
 466         }
 467
 468         os_sp = talloc_asprintf(mem_ctx, "Samba %s", SAMBA_VERSION_STRING);
 469         if (!os_sp) {
 470                 return ADS_ERROR(LDAP_NO_MEMORY);
 471         }
 472
 473         /* fields of primary importance */
 474
 475         status = ads_mod_str(mem_ctx, &mods, "operatingSystem",
 476                              r->in.os_name);
 477         if (!ADS_ERR_OK(status)) {
 478                 return status;
 479         }
 480
 481         status = ads_mod_str(mem_ctx, &mods, "operatingSystemVersion",
 482                              r->in.os_version);
 483         if (!ADS_ERR_OK(status)) {
 484                 return status;
 485         }
 486
 487         status = ads_mod_str(mem_ctx, &mods, "operatingSystemServicePack",
 488                              os_sp);
 489         if (!ADS_ERR_OK(status)) {
 490                 return status;
 491         }
 492
 493         return ads_gen_mod(r->in.ads, r->out.dn, mods);
 494 }
 495
 496 /****************************************************************
 497 ****************************************************************/
 498
 499 static bool libnet_join_create_keytab(TALLOC_CTX *mem_ctx,
 500                                       struct libnet_JoinCtx *r)
 501 {
 502         if (!lp_use_kerberos_keytab()) {
 503                 return true;
 504         }
 505
 506         if (ads_keytab_create_default(r->in.ads) != 0) {
 507                 return false;
 508         }
 509
 510         return true;
 511 }
 512
 513 /****************************************************************
 514 ****************************************************************/
 515
 516 static bool libnet_join_derive_salting_principal(TALLOC_CTX *mem_ctx,
 517                                                  struct libnet_JoinCtx *r)
 518 {
 519         uint32_t domain_func;
 520         ADS_STATUS status;
 521         const char *salt = NULL;
 522         char *std_salt = NULL;
 523
 524         status = ads_domain_func_level(r->in.ads, &domain_func);
 525         if (!ADS_ERR_OK(status)) {
 526                 libnet_join_set_error_string(mem_ctx, r,
 527                         "failed to determine domain functional level: %s",
 528                         ads_errstr(status));
 529                 return false;
 530         }
 531
 532         /* go ahead and setup the default salt */
 533
 534         std_salt = kerberos_standard_des_salt();
 535         if (!std_salt) {
 536                 libnet_join_set_error_string(mem_ctx, r,
 537                         "failed to obtain standard DES salt");
 538                 return false;
 539         }
 540
 541         salt = talloc_strdup(mem_ctx, std_salt);
 542         if (!salt) {
 543                 return false;
 544         }
 545
 546         SAFE_FREE(std_salt);
 547
 548         /* if it's a Windows functional domain, we have to look for the UPN */
 549
 550         if (domain_func == DS_DOMAIN_FUNCTION_2000) {
 551                 char *upn;
 552
 553                 upn = ads_get_upn(r->in.ads, mem_ctx,
 554                                   r->in.machine_name);
 555                 if (upn) {
 556                         salt = talloc_strdup(mem_ctx, upn);
 557                         if (!salt) {
 558                                 return false;
 559                         }
 560                 }
 561         }
 562
 563         return kerberos_secrets_store_des_salt(salt);
 564 }
 565
 566 /****************************************************************
 567 ****************************************************************/
 568
 569 static ADS_STATUS libnet_join_post_processing_ads(TALLOC_CTX *mem_ctx,
 570                                                   struct libnet_JoinCtx *r)
 571 {
 572         ADS_STATUS status;
 573
 574         if (!r->in.ads) {
 575                 status = libnet_join_connect_ads(mem_ctx, r);
 576                 if (!ADS_ERR_OK(status)) {
 577                         return status;
 578                 }
 579         }
 580
 581         status = libnet_join_set_machine_spn(mem_ctx, r);
 582         if (!ADS_ERR_OK(status)) {
 583                 libnet_join_set_error_string(mem_ctx, r,
 584                         "failed to set machine spn: %s",
 585                         ads_errstr(status));
 586                 return status;
 587         }
 588
 589         status = libnet_join_set_os_attributes(mem_ctx, r);
 590         if (!ADS_ERR_OK(status)) {
 591                 libnet_join_set_error_string(mem_ctx, r,
 592                         "failed to set machine os attributes: %s",
 593                         ads_errstr(status));
 594                 return status;
 595         }
 596
 597         status = libnet_join_set_machine_upn(mem_ctx, r);
 598         if (!ADS_ERR_OK(status)) {
 599                 libnet_join_set_error_string(mem_ctx, r,
 600                         "failed to set machine upn: %s",
 601                         ads_errstr(status));
 602                 return status;
 603         }
 604
 605         if (!libnet_join_derive_salting_principal(mem_ctx, r)) {
 606                 return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 607         }
 608
 609         if (!libnet_join_create_keytab(mem_ctx, r)) {
 610                 libnet_join_set_error_string(mem_ctx, r,
 611                         "failed to create kerberos keytab");
 612                 return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 613         }
 614
 615         return ADS_SUCCESS;
 616 }
 617 #endif /* WITH_ADS */
 618
 619 /****************************************************************
 620  Store the machine password and domain SID
 621 ****************************************************************/
 622
 623 static bool libnet_join_joindomain_store_secrets(TALLOC_CTX *mem_ctx,
 624                                                  struct libnet_JoinCtx *r)
 625 {
 626         if (!secrets_store_domain_sid(r->out.netbios_domain_name,
 627                                       r->out.domain_sid))
 628         {
 629                 DEBUG(1,("Failed to save domain sid\n"));
 630                 return false;
 631         }
 632
 633         if (!secrets_store_machine_password(r->in.machine_password,
 634                                             r->out.netbios_domain_name,
 635                                             r->in.secure_channel_type))
 636         {
 637                 DEBUG(1,("Failed to save machine password\n"));
 638                 return false;
 639         }
 640
 641         return true;
 642 }
 643
 644 /****************************************************************
 645  Lookup domain dc's info
 646 ****************************************************************/
 647
 648 static NTSTATUS libnet_join_lookup_dc_rpc(TALLOC_CTX *mem_ctx,
 649                                           struct libnet_JoinCtx *r,
 650                                           struct cli_state **cli)
 651 {
 652         struct rpc_pipe_client *pipe_hnd = NULL;
 653         POLICY_HND lsa_pol;
 654         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 655         union lsa_PolicyInformation *info = NULL;
 656
 657         status = cli_full_connection(cli, NULL,
 658                                      r->in.dc_name,
 659                                      NULL, 0,
 660                                      "IPC$", "IPC",
 661                                      r->in.admin_account,
 662                                      NULL,
 663                                      r->in.admin_password,
 664                                      0,
 665                                      Undefined, NULL);
 666
 667         if (!NT_STATUS_IS_OK(status)) {
 668                 goto done;
 669         }
 670
 671         pipe_hnd = cli_rpc_pipe_open_noauth(*cli, PI_LSARPC, &status);
 672         if (!pipe_hnd) {
 673                 DEBUG(0,("Error connecting to LSA pipe. Error was %s\n",
 674                         nt_errstr(status)));
 675                 goto done;
 676         }
 677
 678         status = rpccli_lsa_open_policy(pipe_hnd, mem_ctx, true,
 679                                         SEC_RIGHTS_MAXIMUM_ALLOWED, &lsa_pol);
 680         if (!NT_STATUS_IS_OK(status)) {
 681                 goto done;
 682         }
 683
 684         status = rpccli_lsa_QueryInfoPolicy2(pipe_hnd, mem_ctx,
 685                                              &lsa_pol,
 686                                              LSA_POLICY_INFO_DNS,
 687                                              &info);
 688         if (NT_STATUS_IS_OK(status)) {
 689                 r->out.domain_is_ad = true;
 690                 r->out.netbios_domain_name = info->dns.name.string;
 691                 r->out.dns_domain_name = info->dns.dns_domain.string;
 692                 r->out.forest_name = info->dns.dns_forest.string;
 693                 r->out.domain_sid = sid_dup_talloc(mem_ctx, info->dns.sid);
 694                 NT_STATUS_HAVE_NO_MEMORY(r->out.domain_sid);
 695         }
 696
 697         if (!NT_STATUS_IS_OK(status)) {
 698                 status = rpccli_lsa_QueryInfoPolicy(pipe_hnd, mem_ctx,
 699                                                     &lsa_pol,
 700                                                     LSA_POLICY_INFO_ACCOUNT_DOMAIN,
 701                                                     &info);
 702                 if (!NT_STATUS_IS_OK(status)) {
 703                         goto done;
 704                 }
 705
 706                 r->out.netbios_domain_name = info->account_domain.name.string;
 707                 r->out.domain_sid = sid_dup_talloc(mem_ctx, info->account_domain.sid);
 708                 NT_STATUS_HAVE_NO_MEMORY(r->out.domain_sid);
 709         }
 710
 711         rpccli_lsa_Close(pipe_hnd, mem_ctx, &lsa_pol);
 712         TALLOC_FREE(pipe_hnd);
 713
 714  done:
 715         return status;
 716 }
 717
 718 /****************************************************************
 719  Do the domain join
 720 ****************************************************************/
 721
 722 static NTSTATUS libnet_join_joindomain_rpc(TALLOC_CTX *mem_ctx,
 723                                            struct libnet_JoinCtx *r,
 724                                            struct cli_state *cli)
 725 {
 726         struct rpc_pipe_client *pipe_hnd = NULL;
 727         POLICY_HND sam_pol, domain_pol, user_pol;
 728         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 729         char *acct_name;
 730         struct lsa_String lsa_acct_name;
 731         uint32_t user_rid;
 732         uint32_t acct_flags = ACB_WSTRUST;
 733         uchar pwbuf[532];
 734         struct MD5Context md5ctx;
 735         uchar md5buffer[16];
 736         DATA_BLOB digested_session_key;
 737         uchar md4_trust_password[16];
 738         struct samr_Ids user_rids;
 739         struct samr_Ids name_types;
 740         union samr_UserInfo user_info;
 741
 742         ZERO_STRUCT(sam_pol);
 743         ZERO_STRUCT(domain_pol);
 744         ZERO_STRUCT(user_pol);
 745
 746         if (!r->in.machine_password) {
 747                 r->in.machine_password = talloc_strdup(mem_ctx, generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH));
 748                 NT_STATUS_HAVE_NO_MEMORY(r->in.machine_password);
 749         }
 750
 751         /* Open the domain */
 752
 753         pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &status);
 754         if (!pipe_hnd) {
 755                 DEBUG(0,("Error connecting to SAM pipe. Error was %s\n",
 756                         nt_errstr(status)));
 757                 goto done;
 758         }
 759
 760         status = rpccli_samr_Connect2(pipe_hnd, mem_ctx,
 761                                       pipe_hnd->desthost,
 762                                       SEC_RIGHTS_MAXIMUM_ALLOWED,
 763                                       &sam_pol);
 764         if (!NT_STATUS_IS_OK(status)) {
 765                 goto done;
 766         }
 767
 768         status = rpccli_samr_OpenDomain(pipe_hnd, mem_ctx,
 769                                         &sam_pol,
 770                                         SEC_RIGHTS_MAXIMUM_ALLOWED,
 771                                         r->out.domain_sid,
 772                                         &domain_pol);
 773         if (!NT_STATUS_IS_OK(status)) {
 774                 goto done;
 775         }
 776
 777         /* Create domain user */
 778
 779         acct_name = talloc_asprintf(mem_ctx, "%s$", r->in.machine_name);
 780         strlower_m(acct_name);
 781
 782         init_lsa_String(&lsa_acct_name, acct_name);
 783
 784         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_CREATE) {
 785                 uint32_t access_desired =
 786                         SEC_GENERIC_READ | SEC_GENERIC_WRITE | SEC_GENERIC_EXECUTE |
 787                         SEC_STD_WRITE_DAC | SEC_STD_DELETE |
 788                         SAMR_USER_ACCESS_SET_PASSWORD |
 789                         SAMR_USER_ACCESS_GET_ATTRIBUTES |
 790                         SAMR_USER_ACCESS_SET_ATTRIBUTES;
 791                 uint32_t access_granted = 0;
 792
 793                 /* Don't try to set any acct_flags flags other than ACB_WSTRUST */
 794
 795                 DEBUG(10,("Creating account with desired access mask: %d\n",
 796                         access_desired));
 797
 798                 status = rpccli_samr_CreateUser2(pipe_hnd, mem_ctx,
 799                                                  &domain_pol,
 800                                                  &lsa_acct_name,
 801                                                  ACB_WSTRUST,
 802                                                  access_desired,
 803                                                  &user_pol,
 804                                                  &access_granted,
 805                                                  &user_rid);
 806                 if (!NT_STATUS_IS_OK(status) &&
 807                     !NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
 808
 809                         DEBUG(10,("Creation of workstation account failed: %s\n",
 810                                 nt_errstr(status)));
 811
 812                         /* If NT_STATUS_ACCESS_DENIED then we have a valid
 813                            username/password combo but the user does not have
 814                            administrator access. */
 815
 816                         if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
 817                                 libnet_join_set_error_string(mem_ctx, r,
 818                                         "User specified does not have "
 819                                         "administrator privileges");
 820                         }
 821
 822                         goto done;
 823                 }
 824
 825                 if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
 826                         if (!(r->in.join_flags &
 827                               WKSSVC_JOIN_FLAGS_DOMAIN_JOIN_IF_JOINED)) {
 828                                 goto done;
 829                         }
 830                 }
 831
 832                 /* We *must* do this.... don't ask... */
 833
 834                 if (NT_STATUS_IS_OK(status)) {
 835                         rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
 836                 }
 837         }
 838
 839         status = rpccli_samr_LookupNames(pipe_hnd, mem_ctx,
 840                                          &domain_pol,
 841                                          1,
 842                                          &lsa_acct_name,
 843                                          &user_rids,
 844                                          &name_types);
 845         if (!NT_STATUS_IS_OK(status)) {
 846                 goto done;
 847         }
 848
 849         if (name_types.ids[0] != SID_NAME_USER) {
 850                 DEBUG(0,("%s is not a user account (type=%d)\n",
 851                         acct_name, name_types.ids[0]));
 852                 status = NT_STATUS_INVALID_WORKSTATION;
 853                 goto done;
 854         }
 855
 856         user_rid = user_rids.ids[0];
 857
 858         /* Open handle on user */
 859
 860         status = rpccli_samr_OpenUser(pipe_hnd, mem_ctx,
 861                                       &domain_pol,
 862                                       SEC_RIGHTS_MAXIMUM_ALLOWED,
 863                                       user_rid,
 864                                       &user_pol);
 865         if (!NT_STATUS_IS_OK(status)) {
 866                 goto done;
 867         }
 868
 869         /* Create a random machine account password and generate the hash */
 870
 871         E_md4hash(r->in.machine_password, md4_trust_password);
 872         encode_pw_buffer(pwbuf, r->in.machine_password, STR_UNICODE);
 873
 874         generate_random_buffer((uint8_t*)md5buffer, sizeof(md5buffer));
 875         digested_session_key = data_blob_talloc(mem_ctx, 0, 16);
 876
 877         MD5Init(&md5ctx);
 878         MD5Update(&md5ctx, md5buffer, sizeof(md5buffer));
 879         MD5Update(&md5ctx, cli->user_session_key.data,
 880                   cli->user_session_key.length);
 881         MD5Final(digested_session_key.data, &md5ctx);
 882
 883         SamOEMhashBlob(pwbuf, sizeof(pwbuf), &digested_session_key);
 884         memcpy(&pwbuf[516], md5buffer, sizeof(md5buffer));
 885
 886         /* Fill in the additional account flags now */
 887
 888         acct_flags |= ACB_PWNOEXP;
 889         if (r->out.domain_is_ad) {
 890 #if !defined(ENCTYPE_ARCFOUR_HMAC)
 891                 acct_flags |= ACB_USE_DES_KEY_ONLY;
 892 #endif
 893                 ;;
 894         }
 895
 896         /* Set password and account flags on machine account */
 897
 898         ZERO_STRUCT(user_info.info25);
 899
 900         user_info.info25.info.fields_present = ACCT_NT_PWD_SET |
 901                                                ACCT_LM_PWD_SET |
 902                                                SAMR_FIELD_ACCT_FLAGS;
 903
 904         user_info.info25.info.acct_flags = acct_flags;
 905         memcpy(&user_info.info25.password.data, pwbuf, sizeof(pwbuf));
 906
 907         status = rpccli_samr_SetUserInfo(pipe_hnd, mem_ctx,
 908                                          &user_pol,
 909                                          25,
 910                                          &user_info);
 911
 912         if (NT_STATUS_EQUAL(status, NT_STATUS(DCERPC_FAULT_INVALID_TAG))) {
 913
 914                 uchar pwbuf2[516];
 915
 916                 encode_pw_buffer(pwbuf2, r->in.machine_password, STR_UNICODE);
 917
 918                 /* retry with level 24 */
 919                 init_samr_user_info24(&user_info.info24, pwbuf2, 24);
 920
 921                 SamOEMhashBlob(user_info.info24.password.data, 516,
 922                                &cli->user_session_key);
 923
 924                 status = rpccli_samr_SetUserInfo2(pipe_hnd, mem_ctx,
 925                                                   &user_pol,
 926                                                   24,
 927                                                   &user_info);
 928         }
 929
 930         if (!NT_STATUS_IS_OK(status)) {
 931
 932                 rpccli_samr_DeleteUser(pipe_hnd, mem_ctx,
 933                                        &user_pol);
 934
 935                 libnet_join_set_error_string(mem_ctx, r,
 936                         "Failed to set password for machine account (%s)\n",
 937                         nt_errstr(status));
 938                 goto done;
 939         }
 940
 941         status = NT_STATUS_OK;
 942
 943  done:
 944         if (!pipe_hnd) {
 945                 return status;
 946         }
 947
 948         if (is_valid_policy_hnd(&sam_pol)) {
 949                 rpccli_samr_Close(pipe_hnd, mem_ctx, &sam_pol);
 950         }
 951         if (is_valid_policy_hnd(&domain_pol)) {
 952                 rpccli_samr_Close(pipe_hnd, mem_ctx, &domain_pol);
 953         }
 954         if (is_valid_policy_hnd(&user_pol)) {
 955                 rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
 956         }
 957         TALLOC_FREE(pipe_hnd);
 958
 959         return status;
 960 }
 961
 962 /****************************************************************
 963 ****************************************************************/
 964
 965 NTSTATUS libnet_join_ok(const char *netbios_domain_name,
 966                         const char *machine_name,
 967                         const char *dc_name)
 968 {
 969         uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
 970         struct cli_state *cli = NULL;
 971         struct rpc_pipe_client *pipe_hnd = NULL;
 972         struct rpc_pipe_client *netlogon_pipe = NULL;
 973         NTSTATUS status;
 974         char *machine_password = NULL;
 975         char *machine_account = NULL;
 976
 977         if (!dc_name) {
 978                 return NT_STATUS_INVALID_PARAMETER;
 979         }
 980
 981         if (!secrets_init()) {
 982                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
 983         }
 984
 985         machine_password = secrets_fetch_machine_password(netbios_domain_name,
 986                                                           NULL, NULL);
 987         if (!machine_password) {
 988                 return NT_STATUS_NO_TRUST_LSA_SECRET;
 989         }
 990
 991         asprintf(&machine_account, "%s$", machine_name);
 992         if (!machine_account) {
 993                 SAFE_FREE(machine_password);
 994                 return NT_STATUS_NO_MEMORY;
 995         }
 996
 997         status = cli_full_connection(&cli, NULL,
 998                                      dc_name,
 999                                      NULL, 0,
1000                                      "IPC$", "IPC",
1001                                      machine_account,
1002                                      NULL,
1003                                      machine_password,
1004                                      0,
1005                                      Undefined, NULL);
1006         free(machine_account);
1007         free(machine_password);
1008
1009         if (!NT_STATUS_IS_OK(status)) {
1010                 status = cli_full_connection(&cli, NULL,
1011                                              dc_name,
1012                                              NULL, 0,
1013                                              "IPC$", "IPC",
1014                                              "",
1015                                              NULL,
1016                                              "",
1017                                              0,
1018                                              Undefined, NULL);
1019         }
1020
1021         if (!NT_STATUS_IS_OK(status)) {
1022                 return status;
1023         }
1024
1025         netlogon_pipe = get_schannel_session_key(cli,
1026                                                  netbios_domain_name,
1027                                                  &neg_flags, &status);
1028         if (!netlogon_pipe) {
1029                 if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_NETWORK_RESPONSE)) {
1030                         cli_shutdown(cli);
1031                         return NT_STATUS_OK;
1032                 }
1033
1034                 DEBUG(0,("libnet_join_ok: failed to get schannel session "
1035                         "key from server %s for domain %s. Error was %s\n",
1036                 cli->desthost, netbios_domain_name, nt_errstr(status)));
1037                 cli_shutdown(cli);
1038                 return status;
1039         }
1040
1041         if (!lp_client_schannel()) {
1042                 cli_shutdown(cli);
1043                 return NT_STATUS_OK;
1044         }
1045
1046         pipe_hnd = cli_rpc_pipe_open_schannel_with_key(cli, PI_NETLOGON,
1047                                                        PIPE_AUTH_LEVEL_PRIVACY,
1048                                                        netbios_domain_name,
1049                                                        netlogon_pipe->dc,
1050                                                        &status);
1051
1052         cli_shutdown(cli);
1053
1054         if (!pipe_hnd) {
1055                 DEBUG(0,("libnet_join_ok: failed to open schannel session "
1056                         "on netlogon pipe to server %s for domain %s. "
1057                         "Error was %s\n",
1058                         cli->desthost, netbios_domain_name, nt_errstr(status)));
1059                 return status;
1060         }
1061
1062         return NT_STATUS_OK;
1063 }
1064
1065 /****************************************************************
1066 ****************************************************************/
1067
1068 static WERROR libnet_join_post_verify(TALLOC_CTX *mem_ctx,
1069                                       struct libnet_JoinCtx *r)
1070 {
1071         NTSTATUS status;
1072
1073         status = libnet_join_ok(r->out.netbios_domain_name,
1074                                 r->in.machine_name,
1075                                 r->in.dc_name);
1076         if (!NT_STATUS_IS_OK(status)) {
1077                 libnet_join_set_error_string(mem_ctx, r,
1078                         "failed to verify domain membership after joining: %s",
1079                         get_friendly_nt_error_msg(status));
1080                 return WERR_SETUP_NOT_JOINED;
1081         }
1082
1083         return WERR_OK;
1084 }
1085
1086 /****************************************************************
1087 ****************************************************************/
1088
1089 static bool libnet_join_unjoindomain_remove_secrets(TALLOC_CTX *mem_ctx,
1090                                                     struct libnet_UnjoinCtx *r)
1091 {
1092         if (!secrets_delete_machine_password_ex(lp_workgroup())) {
1093                 return false;
1094         }
1095
1096         if (!secrets_delete_domain_sid(lp_workgroup())) {
1097                 return false;
1098         }
1099
1100         return true;
1101 }
1102
1103 /****************************************************************
1104 ****************************************************************/
1105
1106 static NTSTATUS libnet_join_unjoindomain_rpc(TALLOC_CTX *mem_ctx,
1107                                              struct libnet_UnjoinCtx *r)
1108 {
1109         struct cli_state *cli = NULL;
1110         struct rpc_pipe_client *pipe_hnd = NULL;
1111         POLICY_HND sam_pol, domain_pol, user_pol;
1112         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
1113         char *acct_name;
1114         uint32_t user_rid;
1115         struct lsa_String lsa_acct_name;
1116         struct samr_Ids user_rids;
1117         struct samr_Ids name_types;
1118         union samr_UserInfo *info = NULL;
1119
1120         ZERO_STRUCT(sam_pol);
1121         ZERO_STRUCT(domain_pol);
1122         ZERO_STRUCT(user_pol);
1123
1124         status = cli_full_connection(&cli, NULL,
1125                                      r->in.dc_name,
1126                                      NULL, 0,
1127                                      "IPC$", "IPC",
1128                                      r->in.admin_account,
1129                                      NULL,
1130                                      r->in.admin_password,
1131                                      0, Undefined, NULL);
1132
1133         if (!NT_STATUS_IS_OK(status)) {
1134                 goto done;
1135         }
1136
1137         /* Open the domain */
1138
1139         pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &status);
1140         if (!pipe_hnd) {
1141                 DEBUG(0,("Error connecting to SAM pipe. Error was %s\n",
1142                         nt_errstr(status)));
1143                 goto done;
1144         }
1145
1146         status = rpccli_samr_Connect2(pipe_hnd, mem_ctx,
1147                                       pipe_hnd->desthost,
1148                                       SEC_RIGHTS_MAXIMUM_ALLOWED,
1149                                       &sam_pol);
1150         if (!NT_STATUS_IS_OK(status)) {
1151                 goto done;
1152         }
1153
1154         status = rpccli_samr_OpenDomain(pipe_hnd, mem_ctx,
1155                                         &sam_pol,
1156                                         SEC_RIGHTS_MAXIMUM_ALLOWED,
1157                                         r->in.domain_sid,
1158                                         &domain_pol);
1159         if (!NT_STATUS_IS_OK(status)) {
1160                 goto done;
1161         }
1162
1163         /* Create domain user */
1164
1165         acct_name = talloc_asprintf(mem_ctx, "%s$", r->in.machine_name);
1166         strlower_m(acct_name);
1167
1168         init_lsa_String(&lsa_acct_name, acct_name);
1169
1170         status = rpccli_samr_LookupNames(pipe_hnd, mem_ctx,
1171                                          &domain_pol,
1172                                          1,
1173                                          &lsa_acct_name,
1174                                          &user_rids,
1175                                          &name_types);
1176
1177         if (!NT_STATUS_IS_OK(status)) {
1178                 goto done;
1179         }
1180
1181         if (name_types.ids[0] != SID_NAME_USER) {
1182                 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name,
1183                         name_types.ids[0]));
1184                 status = NT_STATUS_INVALID_WORKSTATION;
1185                 goto done;
1186         }
1187
1188         user_rid = user_rids.ids[0];
1189
1190         /* Open handle on user */
1191
1192         status = rpccli_samr_OpenUser(pipe_hnd, mem_ctx,
1193                                       &domain_pol,
1194                                       SEC_RIGHTS_MAXIMUM_ALLOWED,
1195                                       user_rid,
1196                                       &user_pol);
1197         if (!NT_STATUS_IS_OK(status)) {
1198                 goto done;
1199         }
1200
1201         /* Get user info */
1202
1203         status = rpccli_samr_QueryUserInfo(pipe_hnd, mem_ctx,
1204                                            &user_pol,
1205                                            16,
1206                                            &info);
1207         if (!NT_STATUS_IS_OK(status)) {
1208                 rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
1209                 goto done;
1210         }
1211
1212         /* now disable and setuser info */
1213
1214         info->info16.acct_flags |= ACB_DISABLED;
1215
1216         status = rpccli_samr_SetUserInfo(pipe_hnd, mem_ctx,
1217                                          &user_pol,
1218                                          16,
1219                                          info);
1220
1221         rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
1222
1223 done:
1224         if (pipe_hnd) {
1225                 if (is_valid_policy_hnd(&domain_pol)) {
1226                         rpccli_samr_Close(pipe_hnd, mem_ctx, &domain_pol);
1227                 }
1228                 if (is_valid_policy_hnd(&sam_pol)) {
1229                         rpccli_samr_Close(pipe_hnd, mem_ctx, &sam_pol);
1230                 }
1231                 TALLOC_FREE(pipe_hnd);
1232         }
1233
1234         if (cli) {
1235                 cli_shutdown(cli);
1236         }
1237
1238         return status;
1239 }
1240
1241 /****************************************************************
1242 ****************************************************************/
1243
1244 static WERROR do_join_modify_vals_config(struct libnet_JoinCtx *r)
1245 {
1246         WERROR werr;
1247         struct smbconf_ctx *ctx;
1248
1249         werr = smbconf_init_reg(r, &ctx, NULL);
1250         if (!W_ERROR_IS_OK(werr)) {
1251                 goto done;
1252         }
1253
1254         if (!(r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE)) {
1255
1256                 werr = smbconf_set_global_parameter(ctx, "security", "user");
1257                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1258
1259                 werr = smbconf_set_global_parameter(ctx, "workgroup",
1260                                                     r->in.domain_name);
1261
1262                 smbconf_delete_global_parameter(ctx, "realm");
1263                 goto done;
1264         }
1265
1266         werr = smbconf_set_global_parameter(ctx, "security", "domain");
1267         W_ERROR_NOT_OK_GOTO_DONE(werr);
1268
1269         werr = smbconf_set_global_parameter(ctx, "workgroup",
1270                                             r->out.netbios_domain_name);
1271         W_ERROR_NOT_OK_GOTO_DONE(werr);
1272
1273         if (r->out.domain_is_ad) {
1274                 werr = smbconf_set_global_parameter(ctx, "security", "ads");
1275                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1276
1277                 werr = smbconf_set_global_parameter(ctx, "realm",
1278                                                     r->out.dns_domain_name);
1279                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1280         }
1281
1282  done:
1283         smbconf_shutdown(ctx);
1284         return werr;
1285 }
1286
1287 /****************************************************************
1288 ****************************************************************/
1289
1290 static WERROR do_unjoin_modify_vals_config(struct libnet_UnjoinCtx *r)
1291 {
1292         WERROR werr = WERR_OK;
1293         struct smbconf_ctx *ctx;
1294
1295         werr = smbconf_init_reg(r, &ctx, NULL);
1296         if (!W_ERROR_IS_OK(werr)) {
1297                 goto done;
1298         }
1299
1300         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1301
1302                 werr = smbconf_set_global_parameter(ctx, "security", "user");
1303                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1304
1305                 werr = smbconf_delete_global_parameter(ctx, "workgroup");
1306                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1307
1308                 smbconf_delete_global_parameter(ctx, "realm");
1309         }
1310
1311  done:
1312         smbconf_shutdown(ctx);
1313         return werr;
1314 }
1315
1316 /****************************************************************
1317 ****************************************************************/
1318
1319 static WERROR do_JoinConfig(struct libnet_JoinCtx *r)
1320 {
1321         WERROR werr;
1322
1323         if (!W_ERROR_IS_OK(r->out.result)) {
1324                 return r->out.result;
1325         }
1326
1327         if (!r->in.modify_config) {
1328                 return WERR_OK;
1329         }
1330
1331         werr = do_join_modify_vals_config(r);
1332         if (!W_ERROR_IS_OK(werr)) {
1333                 return werr;
1334         }
1335
1336         lp_load(get_dyn_CONFIGFILE(),true,false,false,true);
1337
1338         r->out.modified_config = true;
1339         r->out.result = werr;
1340
1341         return werr;
1342 }
1343
1344 /****************************************************************
1345 ****************************************************************/
1346
1347 static WERROR libnet_unjoin_config(struct libnet_UnjoinCtx *r)
1348 {
1349         WERROR werr;
1350
1351         if (!W_ERROR_IS_OK(r->out.result)) {
1352                 return r->out.result;
1353         }
1354
1355         if (!r->in.modify_config) {
1356                 return WERR_OK;
1357         }
1358
1359         werr = do_unjoin_modify_vals_config(r);
1360         if (!W_ERROR_IS_OK(werr)) {
1361                 return werr;
1362         }
1363
1364         lp_load(get_dyn_CONFIGFILE(),true,false,false,true);
1365
1366         r->out.modified_config = true;
1367         r->out.result = werr;
1368
1369         return werr;
1370 }
1371
1372 /****************************************************************
1373 ****************************************************************/
1374
1375 static bool libnet_parse_domain_dc(TALLOC_CTX *mem_ctx,
1376                                    const char *domain_str,
1377                                    const char **domain_p,
1378                                    const char **dc_p)
1379 {
1380         char *domain = NULL;
1381         char *dc = NULL;
1382         const char *p = NULL;
1383
1384         if (!domain_str || !domain_p || !dc_p) {
1385                 return false;
1386         }
1387
1388         p = strchr_m(domain_str, '\\');
1389
1390         if (p != NULL) {
1391                 domain = talloc_strndup(mem_ctx, domain_str,
1392                                          PTR_DIFF(p, domain_str));
1393                 dc = talloc_strdup(mem_ctx, p+1);
1394                 if (!dc) {
1395                         return false;
1396                 }
1397         } else {
1398                 domain = talloc_strdup(mem_ctx, domain_str);
1399                 dc = NULL;
1400         }
1401         if (!domain) {
1402                 return false;
1403         }
1404
1405         *domain_p = domain;
1406
1407         if (!*dc_p && dc) {
1408                 *dc_p = dc;
1409         }
1410
1411         return true;
1412 }
1413
1414 /****************************************************************
1415 ****************************************************************/
1416
1417 static WERROR libnet_join_pre_processing(TALLOC_CTX *mem_ctx,
1418                                          struct libnet_JoinCtx *r)
1419 {
1420         if (!r->in.domain_name) {
1421                 libnet_join_set_error_string(mem_ctx, r,
1422                         "No domain name defined");
1423                 return WERR_INVALID_PARAM;
1424         }
1425
1426         if (!libnet_parse_domain_dc(mem_ctx, r->in.domain_name,
1427                                     &r->in.domain_name,
1428                                     &r->in.dc_name)) {
1429                 libnet_join_set_error_string(mem_ctx, r,
1430                         "Failed to parse domain name");
1431                 return WERR_INVALID_PARAM;
1432         }
1433
1434         if (IS_DC) {
1435                 return WERR_SETUP_DOMAIN_CONTROLLER;
1436         }
1437
1438         if (!secrets_init()) {
1439                 libnet_join_set_error_string(mem_ctx, r,
1440                         "Unable to open secrets database");
1441                 return WERR_CAN_NOT_COMPLETE;
1442         }
1443
1444         return WERR_OK;
1445 }
1446
1447 /****************************************************************
1448 ****************************************************************/
1449
1450 static WERROR libnet_join_post_processing(TALLOC_CTX *mem_ctx,
1451                                           struct libnet_JoinCtx *r)
1452 {
1453         WERROR werr;
1454
1455         if (!W_ERROR_IS_OK(r->out.result)) {
1456                 return r->out.result;
1457         }
1458
1459         werr = do_JoinConfig(r);
1460         if (!W_ERROR_IS_OK(werr)) {
1461                 return werr;
1462         }
1463
1464         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1465                 saf_store(r->in.domain_name, r->in.dc_name);
1466         }
1467
1468         return WERR_OK;
1469 }
1470
1471 /****************************************************************
1472 ****************************************************************/
1473
1474 static int libnet_destroy_JoinCtx(struct libnet_JoinCtx *r)
1475 {
1476         const char *krb5_cc_env = NULL;
1477
1478         if (r->in.ads) {
1479                 ads_destroy(&r->in.ads);
1480         }
1481
1482         krb5_cc_env = getenv(KRB5_ENV_CCNAME);
1483         if (krb5_cc_env && StrCaseCmp(krb5_cc_env, "MEMORY:libnetjoin")) {
1484                 unsetenv(KRB5_ENV_CCNAME);
1485         }
1486
1487         return 0;
1488 }
1489
1490 /****************************************************************
1491 ****************************************************************/
1492
1493 static int libnet_destroy_UnjoinCtx(struct libnet_UnjoinCtx *r)
1494 {
1495         const char *krb5_cc_env = NULL;
1496
1497         if (r->in.ads) {
1498                 ads_destroy(&r->in.ads);
1499         }
1500
1501         krb5_cc_env = getenv(KRB5_ENV_CCNAME);
1502         if (krb5_cc_env && StrCaseCmp(krb5_cc_env, "MEMORY:libnetjoin")) {
1503                 unsetenv(KRB5_ENV_CCNAME);
1504         }
1505
1506         return 0;
1507 }
1508
1509 /****************************************************************
1510 ****************************************************************/
1511
1512 WERROR libnet_init_JoinCtx(TALLOC_CTX *mem_ctx,
1513                            struct libnet_JoinCtx **r)
1514 {
1515         struct libnet_JoinCtx *ctx;
1516         const char *krb5_cc_env = NULL;
1517
1518         ctx = talloc_zero(mem_ctx, struct libnet_JoinCtx);
1519         if (!ctx) {
1520                 return WERR_NOMEM;
1521         }
1522
1523         talloc_set_destructor(ctx, libnet_destroy_JoinCtx);
1524
1525         ctx->in.machine_name = talloc_strdup(mem_ctx, global_myname());
1526         W_ERROR_HAVE_NO_MEMORY(ctx->in.machine_name);
1527
1528         krb5_cc_env = getenv(KRB5_ENV_CCNAME);
1529         if (!krb5_cc_env || (strlen(krb5_cc_env) == 0)) {
1530                 krb5_cc_env = talloc_strdup(mem_ctx, "MEMORY:libnetjoin");
1531                 W_ERROR_HAVE_NO_MEMORY(krb5_cc_env);
1532                 setenv(KRB5_ENV_CCNAME, krb5_cc_env, 1);
1533         }
1534
1535         ctx->in.secure_channel_type = SEC_CHAN_WKSTA;
1536
1537         *r = ctx;
1538
1539         return WERR_OK;
1540 }
1541
1542 /****************************************************************
1543 ****************************************************************/
1544
1545 WERROR libnet_init_UnjoinCtx(TALLOC_CTX *mem_ctx,
1546                              struct libnet_UnjoinCtx **r)
1547 {
1548         struct libnet_UnjoinCtx *ctx;
1549         const char *krb5_cc_env = NULL;
1550
1551         ctx = talloc_zero(mem_ctx, struct libnet_UnjoinCtx);
1552         if (!ctx) {
1553                 return WERR_NOMEM;
1554         }
1555
1556         talloc_set_destructor(ctx, libnet_destroy_UnjoinCtx);
1557
1558         ctx->in.machine_name = talloc_strdup(mem_ctx, global_myname());
1559         W_ERROR_HAVE_NO_MEMORY(ctx->in.machine_name);
1560
1561         krb5_cc_env = getenv(KRB5_ENV_CCNAME);
1562         if (!krb5_cc_env || (strlen(krb5_cc_env) == 0)) {
1563                 krb5_cc_env = talloc_strdup(mem_ctx, "MEMORY:libnetjoin");
1564                 W_ERROR_HAVE_NO_MEMORY(krb5_cc_env);
1565                 setenv(KRB5_ENV_CCNAME, krb5_cc_env, 1);
1566         }
1567
1568         *r = ctx;
1569
1570         return WERR_OK;
1571 }
1572
1573 /****************************************************************
1574 ****************************************************************/
1575
1576 static WERROR libnet_join_check_config(TALLOC_CTX *mem_ctx,
1577                                        struct libnet_JoinCtx *r)
1578 {
1579         /* check if configuration is already set correctly */
1580
1581         switch (r->out.domain_is_ad) {
1582                 case false:
1583                         if ((strequal(lp_workgroup(),
1584                                       r->out.netbios_domain_name)) &&
1585                             (lp_security() == SEC_DOMAIN)) {
1586                                 /* nothing to be done */
1587                                 return WERR_OK;
1588                         }
1589                         break;
1590                 case true:
1591                         if ((strequal(lp_workgroup(),
1592                                       r->out.netbios_domain_name)) &&
1593                             (strequal(lp_realm(),
1594                                       r->out.dns_domain_name)) &&
1595                             ((lp_security() == SEC_ADS) ||
1596                              (lp_security() == SEC_DOMAIN))) {
1597                                 /* nothing to be done */
1598                                 return WERR_OK;
1599                         }
1600                         break;
1601         }
1602
1603         /* check if we are supposed to manipulate configuration */
1604
1605         if (!r->in.modify_config) {
1606                 libnet_join_set_error_string(mem_ctx, r,
1607                         "Invalid configuration and configuration modification "
1608                         "was not requested");
1609                 return WERR_CAN_NOT_COMPLETE;
1610         }
1611
1612         /* check if we are able to manipulate configuration */
1613
1614         if (!lp_config_backend_is_registry()) {
1615                 libnet_join_set_error_string(mem_ctx, r,
1616                         "Configuration manipulation requested but not "
1617                         "supported by backend");
1618                 return WERR_NOT_SUPPORTED;
1619         }
1620
1621         return WERR_OK;
1622 }
1623
1624 /****************************************************************
1625 ****************************************************************/
1626
1627 static WERROR libnet_DomainJoin(TALLOC_CTX *mem_ctx,
1628                                 struct libnet_JoinCtx *r)
1629 {
1630         NTSTATUS status;
1631         WERROR werr;
1632         struct cli_state *cli = NULL;
1633 #ifdef WITH_ADS
1634         ADS_STATUS ads_status;
1635 #endif /* WITH_ADS */
1636
1637         if (!r->in.dc_name) {
1638                 struct netr_DsRGetDCNameInfo *info;
1639                 const char *dc;
1640                 status = dsgetdcname(mem_ctx,
1641                                      r->in.msg_ctx,
1642                                      r->in.domain_name,
1643                                      NULL,
1644                                      NULL,
1645                                      DS_DIRECTORY_SERVICE_REQUIRED |
1646                                      DS_WRITABLE_REQUIRED |
1647                                      DS_RETURN_DNS_NAME,
1648                                      &info);
1649                 if (!NT_STATUS_IS_OK(status)) {
1650                         libnet_join_set_error_string(mem_ctx, r,
1651                                 "failed to find DC for domain %s",
1652                                 r->in.domain_name,
1653                                 get_friendly_nt_error_msg(status));
1654                         return WERR_DOMAIN_CONTROLLER_NOT_FOUND;
1655                 }
1656
1657                 dc = strip_hostname(info->dc_unc);
1658                 r->in.dc_name = talloc_strdup(mem_ctx, dc);
1659                 W_ERROR_HAVE_NO_MEMORY(r->in.dc_name);
1660         }
1661
1662         status = libnet_join_lookup_dc_rpc(mem_ctx, r, &cli);
1663         if (!NT_STATUS_IS_OK(status)) {
1664                 libnet_join_set_error_string(mem_ctx, r,
1665                         "failed to lookup DC info for domain '%s' over rpc: %s",
1666                         r->in.domain_name, get_friendly_nt_error_msg(status));
1667                 return ntstatus_to_werror(status);
1668         }
1669
1670         werr = libnet_join_check_config(mem_ctx, r);
1671         if (!W_ERROR_IS_OK(werr)) {
1672                 goto done;
1673         }
1674
1675 #ifdef WITH_ADS
1676         if (r->out.domain_is_ad && r->in.account_ou) {
1677
1678                 ads_status = libnet_join_connect_ads(mem_ctx, r);
1679                 if (!ADS_ERR_OK(ads_status)) {
1680                         return WERR_DEFAULT_JOIN_REQUIRED;
1681                 }
1682
1683                 ads_status = libnet_join_precreate_machine_acct(mem_ctx, r);
1684                 if (!ADS_ERR_OK(ads_status)) {
1685                         libnet_join_set_error_string(mem_ctx, r,
1686                                 "failed to precreate account in ou %s: %s",
1687                                 r->in.account_ou,
1688                                 ads_errstr(ads_status));
1689                         return WERR_DEFAULT_JOIN_REQUIRED;
1690                 }
1691
1692                 r->in.join_flags &= ~WKSSVC_JOIN_FLAGS_ACCOUNT_CREATE;
1693         }
1694 #endif /* WITH_ADS */
1695
1696         status = libnet_join_joindomain_rpc(mem_ctx, r, cli);
1697         if (!NT_STATUS_IS_OK(status)) {
1698                 libnet_join_set_error_string(mem_ctx, r,
1699                         "failed to join domain '%s' over rpc: %s",
1700                         r->in.domain_name, get_friendly_nt_error_msg(status));
1701                 if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
1702                         return WERR_SETUP_ALREADY_JOINED;
1703                 }
1704                 werr = ntstatus_to_werror(status);
1705                 goto done;
1706         }
1707
1708         if (!libnet_join_joindomain_store_secrets(mem_ctx, r)) {
1709                 werr = WERR_SETUP_NOT_JOINED;
1710                 goto done;
1711         }
1712
1713 #ifdef WITH_ADS
1714         if (r->out.domain_is_ad) {
1715                 ads_status  = libnet_join_post_processing_ads(mem_ctx, r);
1716                 if (!ADS_ERR_OK(ads_status)) {
1717                         werr = WERR_GENERAL_FAILURE;
1718                         goto done;
1719                 }
1720         }
1721 #endif /* WITH_ADS */
1722
1723         werr = WERR_OK;
1724
1725  done:
1726         if (cli) {
1727                 cli_shutdown(cli);
1728         }
1729
1730         return werr;
1731 }
1732
1733 /****************************************************************
1734 ****************************************************************/
1735
1736 WERROR libnet_join_rollback(TALLOC_CTX *mem_ctx,
1737                             struct libnet_JoinCtx *r)
1738 {
1739         WERROR werr;
1740         struct libnet_UnjoinCtx *u = NULL;
1741
1742         werr = libnet_init_UnjoinCtx(mem_ctx, &u);
1743         if (!W_ERROR_IS_OK(werr)) {
1744                 return werr;
1745         }
1746
1747         u->in.debug             = r->in.debug;
1748         u->in.dc_name           = r->in.dc_name;
1749         u->in.domain_name       = r->in.domain_name;
1750         u->in.admin_account     = r->in.admin_account;
1751         u->in.admin_password    = r->in.admin_password;
1752         u->in.modify_config     = r->in.modify_config;
1753         u->in.unjoin_flags      = WKSSVC_JOIN_FLAGS_JOIN_TYPE |
1754                                   WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE;
1755
1756         werr = libnet_Unjoin(mem_ctx, u);
1757         TALLOC_FREE(u);
1758
1759         return werr;
1760 }
1761
1762 /****************************************************************
1763 ****************************************************************/
1764
1765 WERROR libnet_Join(TALLOC_CTX *mem_ctx,
1766                    struct libnet_JoinCtx *r)
1767 {
1768         WERROR werr;
1769
1770         if (r->in.debug) {
1771                 LIBNET_JOIN_IN_DUMP_CTX(mem_ctx, r);
1772         }
1773
1774         werr = libnet_join_pre_processing(mem_ctx, r);
1775         if (!W_ERROR_IS_OK(werr)) {
1776                 goto done;
1777         }
1778
1779         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1780                 werr = libnet_DomainJoin(mem_ctx, r);
1781                 if (!W_ERROR_IS_OK(werr)) {
1782                         goto done;
1783                 }
1784         }
1785
1786         werr = libnet_join_post_processing(mem_ctx, r);
1787         if (!W_ERROR_IS_OK(werr)) {
1788                 goto done;
1789         }
1790
1791         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1792                 werr = libnet_join_post_verify(mem_ctx, r);
1793                 if (!W_ERROR_IS_OK(werr)) {
1794                         libnet_join_rollback(mem_ctx, r);
1795                 }
1796         }
1797
1798  done:
1799         r->out.result = werr;
1800
1801         if (r->in.debug) {
1802                 LIBNET_JOIN_OUT_DUMP_CTX(mem_ctx, r);
1803         }
1804         return werr;
1805 }
1806
1807 /****************************************************************
1808 ****************************************************************/
1809
1810 static WERROR libnet_DomainUnjoin(TALLOC_CTX *mem_ctx,
1811                                   struct libnet_UnjoinCtx *r)
1812 {
1813         NTSTATUS status;
1814
1815         if (!r->in.domain_sid) {
1816                 struct dom_sid sid;
1817                 if (!secrets_fetch_domain_sid(lp_workgroup(), &sid)) {
1818                         libnet_unjoin_set_error_string(mem_ctx, r,
1819                                 "Unable to fetch domain sid: are we joined?");
1820                         return WERR_SETUP_NOT_JOINED;
1821                 }
1822                 r->in.domain_sid = sid_dup_talloc(mem_ctx, &sid);
1823                 W_ERROR_HAVE_NO_MEMORY(r->in.domain_sid);
1824         }
1825
1826         if (!r->in.dc_name) {
1827                 struct netr_DsRGetDCNameInfo *info;
1828                 const char *dc;
1829                 status = dsgetdcname(mem_ctx,
1830                                      r->in.msg_ctx,
1831                                      r->in.domain_name,
1832                                      NULL,
1833                                      NULL,
1834                                      DS_DIRECTORY_SERVICE_REQUIRED |
1835                                      DS_WRITABLE_REQUIRED |
1836                                      DS_RETURN_DNS_NAME,
1837                                      &info);
1838                 if (!NT_STATUS_IS_OK(status)) {
1839                         libnet_unjoin_set_error_string(mem_ctx, r,
1840                                 "failed to find DC for domain %s",
1841                                 r->in.domain_name,
1842                                 get_friendly_nt_error_msg(status));
1843                         return WERR_DOMAIN_CONTROLLER_NOT_FOUND;
1844                 }
1845
1846                 dc = strip_hostname(info->dc_unc);
1847                 r->in.dc_name = talloc_strdup(mem_ctx, dc);
1848                 W_ERROR_HAVE_NO_MEMORY(r->in.dc_name);
1849         }
1850
1851         status = libnet_join_unjoindomain_rpc(mem_ctx, r);
1852         if (!NT_STATUS_IS_OK(status)) {
1853                 libnet_unjoin_set_error_string(mem_ctx, r,
1854                         "failed to disable machine account via rpc: %s",
1855                         get_friendly_nt_error_msg(status));
1856                 if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
1857                         return WERR_SETUP_NOT_JOINED;
1858                 }
1859                 return ntstatus_to_werror(status);
1860         }
1861
1862         r->out.disabled_machine_account = true;
1863
1864 #ifdef WITH_ADS
1865         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE) {
1866                 ADS_STATUS ads_status;
1867                 libnet_unjoin_connect_ads(mem_ctx, r);
1868                 ads_status = libnet_unjoin_remove_machine_acct(mem_ctx, r);
1869                 if (!ADS_ERR_OK(ads_status)) {
1870                         libnet_unjoin_set_error_string(mem_ctx, r,
1871                                 "failed to remove machine account from AD: %s",
1872                                 ads_errstr(ads_status));
1873                 } else {
1874                         r->out.deleted_machine_account = true;
1875                         /* dirty hack */
1876                         r->out.dns_domain_name = talloc_strdup(mem_ctx,
1877                                                                r->in.ads->server.realm);
1878                         W_ERROR_HAVE_NO_MEMORY(r->out.dns_domain_name);
1879                 }
1880         }
1881 #endif /* WITH_ADS */
1882
1883         libnet_join_unjoindomain_remove_secrets(mem_ctx, r);
1884
1885         return WERR_OK;
1886 }
1887
1888 /****************************************************************
1889 ****************************************************************/
1890
1891 static WERROR libnet_unjoin_pre_processing(TALLOC_CTX *mem_ctx,
1892                                            struct libnet_UnjoinCtx *r)
1893 {
1894         if (!r->in.domain_name) {
1895                 libnet_unjoin_set_error_string(mem_ctx, r,
1896                         "No domain name defined");
1897                 return WERR_INVALID_PARAM;
1898         }
1899
1900         if (!libnet_parse_domain_dc(mem_ctx, r->in.domain_name,
1901                                     &r->in.domain_name,
1902                                     &r->in.dc_name)) {
1903                 libnet_unjoin_set_error_string(mem_ctx, r,
1904                         "Failed to parse domain name");
1905                 return WERR_INVALID_PARAM;
1906         }
1907
1908         if (IS_DC) {
1909                 return WERR_SETUP_DOMAIN_CONTROLLER;
1910         }
1911
1912         if (!secrets_init()) {
1913                 libnet_unjoin_set_error_string(mem_ctx, r,
1914                         "Unable to open secrets database");
1915                 return WERR_CAN_NOT_COMPLETE;
1916         }
1917
1918         return WERR_OK;
1919 }
1920
1921 /****************************************************************
1922 ****************************************************************/
1923
1924 static WERROR libnet_unjoin_post_processing(TALLOC_CTX *mem_ctx,
1925                                             struct libnet_UnjoinCtx *r)
1926 {
1927         saf_delete(r->out.netbios_domain_name);
1928         saf_delete(r->out.dns_domain_name);
1929
1930         return libnet_unjoin_config(r);
1931 }
1932
1933 /****************************************************************
1934 ****************************************************************/
1935
1936 WERROR libnet_Unjoin(TALLOC_CTX *mem_ctx,
1937                      struct libnet_UnjoinCtx *r)
1938 {
1939         WERROR werr;
1940
1941         if (r->in.debug) {
1942                 LIBNET_UNJOIN_IN_DUMP_CTX(mem_ctx, r);
1943         }
1944
1945         werr = libnet_unjoin_pre_processing(mem_ctx, r);
1946         if (!W_ERROR_IS_OK(werr)) {
1947                 goto done;
1948         }
1949
1950         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1951                 werr = libnet_DomainUnjoin(mem_ctx, r);
1952                 if (!W_ERROR_IS_OK(werr)) {
1953                         libnet_unjoin_config(r);
1954                         goto done;
1955                 }
1956         }
1957
1958         werr = libnet_unjoin_post_processing(mem_ctx, r);
1959         if (!W_ERROR_IS_OK(werr)) {
1960                 goto done;
1961         }
1962
1963  done:
1964         r->out.result = werr;
1965
1966         if (r->in.debug) {
1967                 LIBNET_UNJOIN_OUT_DUMP_CTX(mem_ctx, r);
1968         }
1969
1970         return werr;
1971 }