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 "ads.h"
  23 #include "librpc/gen_ndr/ndr_libnet_join.h"
  24 #include "libnet/libnet_join.h"
  25 #include "libcli/auth/libcli_auth.h"
  26 #include "../librpc/gen_ndr/ndr_samr_c.h"
  27 #include "rpc_client/init_samr.h"
  28 #include "../librpc/gen_ndr/ndr_lsa_c.h"
  29 #include "rpc_client/cli_lsarpc.h"
  30 #include "../librpc/gen_ndr/ndr_netlogon.h"
  31 #include "rpc_client/cli_netlogon.h"
  32 #include "lib/smbconf/smbconf.h"
  33 #include "lib/smbconf/smbconf_reg.h"
  34 #include "../libds/common/flags.h"
  35 #include "secrets.h"
  36 #include "rpc_client/init_lsa.h"
  37 #include "rpc_client/cli_pipe.h"
  38 #include "../libcli/security/security.h"
  39 #include "passdb.h"
  40 #include "libsmb/libsmb.h"
  41 #include "../libcli/smb/smbXcli_base.h"
  42 #include "lib/param/loadparm.h"
  43 #include "libcli/auth/netlogon_creds_cli.h"
  44 #include "auth/credentials/credentials.h"
  45
  46 /****************************************************************
  47 ****************************************************************/
  48
  49 #define LIBNET_JOIN_DUMP_CTX(ctx, r, f) \
  50         do { \
  51                 char *str = NULL; \
  52                 str = NDR_PRINT_FUNCTION_STRING(ctx, libnet_JoinCtx, f, r); \
  53                 DEBUG(1,("libnet_Join:\n%s", str)); \
  54                 TALLOC_FREE(str); \
  55         } while (0)
  56
  57 #define LIBNET_JOIN_IN_DUMP_CTX(ctx, r) \
  58         LIBNET_JOIN_DUMP_CTX(ctx, r, NDR_IN | NDR_SET_VALUES)
  59 #define LIBNET_JOIN_OUT_DUMP_CTX(ctx, r) \
  60         LIBNET_JOIN_DUMP_CTX(ctx, r, NDR_OUT)
  61
  62 #define LIBNET_UNJOIN_DUMP_CTX(ctx, r, f) \
  63         do { \
  64                 char *str = NULL; \
  65                 str = NDR_PRINT_FUNCTION_STRING(ctx, libnet_UnjoinCtx, f, r); \
  66                 DEBUG(1,("libnet_Unjoin:\n%s", str)); \
  67                 TALLOC_FREE(str); \
  68         } while (0)
  69
  70 #define LIBNET_UNJOIN_IN_DUMP_CTX(ctx, r) \
  71         LIBNET_UNJOIN_DUMP_CTX(ctx, r, NDR_IN | NDR_SET_VALUES)
  72 #define LIBNET_UNJOIN_OUT_DUMP_CTX(ctx, r) \
  73         LIBNET_UNJOIN_DUMP_CTX(ctx, r, NDR_OUT)
  74
  75 /****************************************************************
  76 ****************************************************************/
  77
  78 static void libnet_join_set_error_string(TALLOC_CTX *mem_ctx,
  79                                          struct libnet_JoinCtx *r,
  80                                          const char *format, ...)
  81 {
  82         va_list args;
  83
  84         if (r->out.error_string) {
  85                 return;
  86         }
  87
  88         va_start(args, format);
  89         r->out.error_string = talloc_vasprintf(mem_ctx, format, args);
  90         va_end(args);
  91 }
  92
  93 /****************************************************************
  94 ****************************************************************/
  95
  96 static void libnet_unjoin_set_error_string(TALLOC_CTX *mem_ctx,
  97                                            struct libnet_UnjoinCtx *r,
  98                                            const char *format, ...)
  99 {
 100         va_list args;
 101
 102         if (r->out.error_string) {
 103                 return;
 104         }
 105
 106         va_start(args, format);
 107         r->out.error_string = talloc_vasprintf(mem_ctx, format, args);
 108         va_end(args);
 109 }
 110
 111 #ifdef HAVE_ADS
 112
 113 /****************************************************************
 114 ****************************************************************/
 115
 116 static ADS_STATUS libnet_connect_ads(const char *dns_domain_name,
 117                                      const char *netbios_domain_name,
 118                                      const char *dc_name,
 119                                      const char *user_name,
 120                                      const char *password,
 121                                      ADS_STRUCT **ads)
 122 {
 123         ADS_STATUS status;
 124         ADS_STRUCT *my_ads = NULL;
 125         char *cp;
 126
 127         my_ads = ads_init(dns_domain_name,
 128                           netbios_domain_name,
 129                           dc_name);
 130         if (!my_ads) {
 131                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 132         }
 133
 134         if (user_name) {
 135                 SAFE_FREE(my_ads->auth.user_name);
 136                 my_ads->auth.user_name = SMB_STRDUP(user_name);
 137                 if ((cp = strchr_m(my_ads->auth.user_name, '@'))!=0) {
 138                         *cp++ = '\0';
 139                         SAFE_FREE(my_ads->auth.realm);
 140                         my_ads->auth.realm = smb_xstrdup(cp);
 141                         if (!strupper_m(my_ads->auth.realm)) {
 142                                 ads_destroy(&my_ads);
 143                                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 144                         }
 145                 }
 146         }
 147
 148         if (password) {
 149                 SAFE_FREE(my_ads->auth.password);
 150                 my_ads->auth.password = SMB_STRDUP(password);
 151         }
 152
 153         status = ads_connect_user_creds(my_ads);
 154         if (!ADS_ERR_OK(status)) {
 155                 ads_destroy(&my_ads);
 156                 return status;
 157         }
 158
 159         *ads = my_ads;
 160         return ADS_SUCCESS;
 161 }
 162
 163 /****************************************************************
 164 ****************************************************************/
 165
 166 static ADS_STATUS libnet_join_connect_ads(TALLOC_CTX *mem_ctx,
 167                                           struct libnet_JoinCtx *r)
 168 {
 169         ADS_STATUS status;
 170
 171         status = libnet_connect_ads(r->out.dns_domain_name,
 172                                     r->out.netbios_domain_name,
 173                                     r->in.dc_name,
 174                                     r->in.admin_account,
 175                                     r->in.admin_password,
 176                                     &r->in.ads);
 177         if (!ADS_ERR_OK(status)) {
 178                 libnet_join_set_error_string(mem_ctx, r,
 179                         "failed to connect to AD: %s",
 180                         ads_errstr(status));
 181                 return status;
 182         }
 183
 184         if (!r->out.netbios_domain_name) {
 185                 r->out.netbios_domain_name = talloc_strdup(mem_ctx,
 186                                                            r->in.ads->server.workgroup);
 187                 ADS_ERROR_HAVE_NO_MEMORY(r->out.netbios_domain_name);
 188         }
 189
 190         if (!r->out.dns_domain_name) {
 191                 r->out.dns_domain_name = talloc_strdup(mem_ctx,
 192                                                        r->in.ads->config.realm);
 193                 ADS_ERROR_HAVE_NO_MEMORY(r->out.dns_domain_name);
 194         }
 195
 196         r->out.domain_is_ad = true;
 197
 198         return ADS_SUCCESS;
 199 }
 200
 201 /****************************************************************
 202 ****************************************************************/
 203
 204 static ADS_STATUS libnet_unjoin_connect_ads(TALLOC_CTX *mem_ctx,
 205                                             struct libnet_UnjoinCtx *r)
 206 {
 207         ADS_STATUS status;
 208
 209         status = libnet_connect_ads(r->in.domain_name,
 210                                     r->in.domain_name,
 211                                     r->in.dc_name,
 212                                     r->in.admin_account,
 213                                     r->in.admin_password,
 214                                     &r->in.ads);
 215         if (!ADS_ERR_OK(status)) {
 216                 libnet_unjoin_set_error_string(mem_ctx, r,
 217                         "failed to connect to AD: %s",
 218                         ads_errstr(status));
 219         }
 220
 221         return status;
 222 }
 223
 224 /****************************************************************
 225  join a domain using ADS (LDAP mods)
 226 ****************************************************************/
 227
 228 static ADS_STATUS libnet_join_precreate_machine_acct(TALLOC_CTX *mem_ctx,
 229                                                      struct libnet_JoinCtx *r)
 230 {
 231         ADS_STATUS status;
 232         LDAPMessage *res = NULL;
 233         const char *attrs[] = { "dn", NULL };
 234         bool moved = false;
 235
 236         status = ads_check_ou_dn(mem_ctx, r->in.ads, &r->in.account_ou);
 237         if (!ADS_ERR_OK(status)) {
 238                 return status;
 239         }
 240
 241         status = ads_search_dn(r->in.ads, &res, r->in.account_ou, attrs);
 242         if (!ADS_ERR_OK(status)) {
 243                 return status;
 244         }
 245
 246         if (ads_count_replies(r->in.ads, res) != 1) {
 247                 ads_msgfree(r->in.ads, res);
 248                 return ADS_ERROR_LDAP(LDAP_NO_SUCH_OBJECT);
 249         }
 250
 251         ads_msgfree(r->in.ads, res);
 252
 253         /* Attempt to create the machine account and bail if this fails.
 254            Assume that the admin wants exactly what they requested */
 255
 256         status = ads_create_machine_acct(r->in.ads,
 257                                          r->in.machine_name,
 258                                          r->in.account_ou);
 259
 260         if (ADS_ERR_OK(status)) {
 261                 DEBUG(1,("machine account creation created\n"));
 262                 return status;
 263         } else  if ((status.error_type == ENUM_ADS_ERROR_LDAP) &&
 264                     (status.err.rc == LDAP_ALREADY_EXISTS)) {
 265                 status = ADS_SUCCESS;
 266         }
 267
 268         if (!ADS_ERR_OK(status)) {
 269                 DEBUG(1,("machine account creation failed\n"));
 270                 return status;
 271         }
 272
 273         status = ads_move_machine_acct(r->in.ads,
 274                                        r->in.machine_name,
 275                                        r->in.account_ou,
 276                                        &moved);
 277         if (!ADS_ERR_OK(status)) {
 278                 DEBUG(1,("failure to locate/move pre-existing "
 279                         "machine account\n"));
 280                 return status;
 281         }
 282
 283         DEBUG(1,("The machine account %s the specified OU.\n",
 284                 moved ? "was moved into" : "already exists in"));
 285
 286         return status;
 287 }
 288
 289 /****************************************************************
 290 ****************************************************************/
 291
 292 static ADS_STATUS libnet_unjoin_remove_machine_acct(TALLOC_CTX *mem_ctx,
 293                                                     struct libnet_UnjoinCtx *r)
 294 {
 295         ADS_STATUS status;
 296
 297         if (!r->in.ads) {
 298                 status = libnet_unjoin_connect_ads(mem_ctx, r);
 299                 if (!ADS_ERR_OK(status)) {
 300                         libnet_unjoin_set_error_string(mem_ctx, r,
 301                                 "failed to connect to AD: %s",
 302                                 ads_errstr(status));
 303                         return status;
 304                 }
 305         }
 306
 307         status = ads_leave_realm(r->in.ads, r->in.machine_name);
 308         if (!ADS_ERR_OK(status)) {
 309                 libnet_unjoin_set_error_string(mem_ctx, r,
 310                         "failed to leave realm: %s",
 311                         ads_errstr(status));
 312                 return status;
 313         }
 314
 315         return ADS_SUCCESS;
 316 }
 317
 318 /****************************************************************
 319 ****************************************************************/
 320
 321 static ADS_STATUS libnet_join_find_machine_acct(TALLOC_CTX *mem_ctx,
 322                                                 struct libnet_JoinCtx *r)
 323 {
 324         ADS_STATUS status;
 325         LDAPMessage *res = NULL;
 326         char *dn = NULL;
 327
 328         if (!r->in.machine_name) {
 329                 return ADS_ERROR(LDAP_NO_MEMORY);
 330         }
 331
 332         status = ads_find_machine_acct(r->in.ads,
 333                                        &res,
 334                                        r->in.machine_name);
 335         if (!ADS_ERR_OK(status)) {
 336                 return status;
 337         }
 338
 339         if (ads_count_replies(r->in.ads, res) != 1) {
 340                 status = ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 341                 goto done;
 342         }
 343
 344         dn = ads_get_dn(r->in.ads, mem_ctx, res);
 345         if (!dn) {
 346                 status = ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 347                 goto done;
 348         }
 349
 350         r->out.dn = talloc_strdup(mem_ctx, dn);
 351         if (!r->out.dn) {
 352                 status = ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 353                 goto done;
 354         }
 355
 356  done:
 357         ads_msgfree(r->in.ads, res);
 358         TALLOC_FREE(dn);
 359
 360         return status;
 361 }
 362
 363 static ADS_STATUS libnet_join_get_machine_spns(TALLOC_CTX *mem_ctx,
 364                                                struct libnet_JoinCtx *r,
 365                                                char ***spn_array,
 366                                                size_t *num_spns)
 367 {
 368         ADS_STATUS status;
 369
 370         if (r->in.machine_name == NULL) {
 371                 return ADS_ERROR_SYSTEM(EINVAL);
 372         }
 373
 374         status = ads_get_service_principal_names(mem_ctx,
 375                                                  r->in.ads,
 376                                                  r->in.machine_name,
 377                                                  spn_array,
 378                                                  num_spns);
 379
 380         return status;
 381 }
 382
 383 /****************************************************************
 384  Set a machines dNSHostName and servicePrincipalName attributes
 385 ****************************************************************/
 386
 387 static ADS_STATUS libnet_join_set_machine_spn(TALLOC_CTX *mem_ctx,
 388                                               struct libnet_JoinCtx *r)
 389 {
 390         ADS_STATUS status;
 391         ADS_MODLIST mods;
 392         fstring my_fqdn;
 393         const char **spn_array = NULL;
 394         size_t num_spns = 0;
 395         char *spn = NULL;
 396         bool ok;
 397
 398         /* Find our DN */
 399
 400         status = libnet_join_find_machine_acct(mem_ctx, r);
 401         if (!ADS_ERR_OK(status)) {
 402                 return status;
 403         }
 404
 405         status = libnet_join_get_machine_spns(mem_ctx,
 406                                               r,
 407                                               discard_const_p(char **, &spn_array),
 408                                               &num_spns);
 409         if (!ADS_ERR_OK(status)) {
 410                 DEBUG(5, ("Retrieving the servicePrincipalNames failed.\n"));
 411         }
 412
 413         /* Windows only creates HOST/shortname & HOST/fqdn. */
 414
 415         spn = talloc_asprintf(mem_ctx, "HOST/%s", r->in.machine_name);
 416         if (!spn) {
 417                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 418         }
 419         if (!strupper_m(spn)) {
 420                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 421         }
 422
 423         ok = ads_element_in_array(spn_array, num_spns, spn);
 424         if (!ok) {
 425                 ok = add_string_to_array(spn_array, spn,
 426                                          &spn_array, (int *)&num_spns);
 427                 if (!ok) {
 428                         return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 429                 }
 430         }
 431
 432         if (!name_to_fqdn(my_fqdn, r->in.machine_name)
 433             || (strchr(my_fqdn, '.') == NULL)) {
 434                 fstr_sprintf(my_fqdn, "%s.%s", r->in.machine_name,
 435                              r->out.dns_domain_name);
 436         }
 437
 438         if (!strlower_m(my_fqdn)) {
 439                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 440         }
 441
 442         if (!strequal(my_fqdn, r->in.machine_name)) {
 443                 spn = talloc_asprintf(mem_ctx, "HOST/%s", my_fqdn);
 444                 if (!spn) {
 445                         return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 446                 }
 447
 448                 ok = ads_element_in_array(spn_array, num_spns, spn);
 449                 if (!ok) {
 450                         ok = add_string_to_array(spn_array, spn,
 451                                                  &spn_array, (int *)&num_spns);
 452                         if (!ok) {
 453                                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 454                         }
 455                 }
 456         }
 457
 458         /* make sure to NULL terminate the array */
 459         spn_array = talloc_realloc(mem_ctx, spn_array, const char *, num_spns + 1);
 460         if (spn_array == NULL) {
 461                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 462         }
 463         spn_array[num_spns] = NULL;
 464
 465         mods = ads_init_mods(mem_ctx);
 466         if (!mods) {
 467                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 468         }
 469
 470         /* fields of primary importance */
 471
 472         status = ads_mod_str(mem_ctx, &mods, "dNSHostName", my_fqdn);
 473         if (!ADS_ERR_OK(status)) {
 474                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 475         }
 476
 477         status = ads_mod_strlist(mem_ctx, &mods, "servicePrincipalName",
 478                                  spn_array);
 479         if (!ADS_ERR_OK(status)) {
 480                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 481         }
 482
 483         return ads_gen_mod(r->in.ads, r->out.dn, mods);
 484 }
 485
 486 /****************************************************************
 487 ****************************************************************/
 488
 489 static ADS_STATUS libnet_join_set_machine_upn(TALLOC_CTX *mem_ctx,
 490                                               struct libnet_JoinCtx *r)
 491 {
 492         ADS_STATUS status;
 493         ADS_MODLIST mods;
 494
 495         if (!r->in.create_upn) {
 496                 return ADS_SUCCESS;
 497         }
 498
 499         /* Find our DN */
 500
 501         status = libnet_join_find_machine_acct(mem_ctx, r);
 502         if (!ADS_ERR_OK(status)) {
 503                 return status;
 504         }
 505
 506         if (!r->in.upn) {
 507                 const char *realm = r->out.dns_domain_name;
 508
 509                 /* in case we are about to generate a keytab during the join
 510                  * make sure the default upn we create is usable with kinit -k.
 511                  * gd */
 512
 513                 if (USE_KERBEROS_KEYTAB) {
 514                         realm = talloc_strdup_upper(mem_ctx,
 515                                                     r->out.dns_domain_name);
 516                 }
 517
 518                 if (!realm) {
 519                         return ADS_ERROR(LDAP_NO_MEMORY);
 520                 }
 521
 522                 r->in.upn = talloc_asprintf(mem_ctx,
 523                                             "host/%s@%s",
 524                                             r->in.machine_name,
 525                                             realm);
 526                 if (!r->in.upn) {
 527                         return ADS_ERROR(LDAP_NO_MEMORY);
 528                 }
 529         }
 530
 531         /* now do the mods */
 532
 533         mods = ads_init_mods(mem_ctx);
 534         if (!mods) {
 535                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 536         }
 537
 538         /* fields of primary importance */
 539
 540         status = ads_mod_str(mem_ctx, &mods, "userPrincipalName", r->in.upn);
 541         if (!ADS_ERR_OK(status)) {
 542                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
 543         }
 544
 545         return ads_gen_mod(r->in.ads, r->out.dn, mods);
 546 }
 547
 548
 549 /****************************************************************
 550 ****************************************************************/
 551
 552 static ADS_STATUS libnet_join_set_os_attributes(TALLOC_CTX *mem_ctx,
 553                                                 struct libnet_JoinCtx *r)
 554 {
 555         ADS_STATUS status;
 556         ADS_MODLIST mods;
 557         char *os_sp = NULL;
 558
 559         if (!r->in.os_name || !r->in.os_version ) {
 560                 return ADS_SUCCESS;
 561         }
 562
 563         /* Find our DN */
 564
 565         status = libnet_join_find_machine_acct(mem_ctx, r);
 566         if (!ADS_ERR_OK(status)) {
 567                 return status;
 568         }
 569
 570         /* now do the mods */
 571
 572         mods = ads_init_mods(mem_ctx);
 573         if (!mods) {
 574                 return ADS_ERROR(LDAP_NO_MEMORY);
 575         }
 576
 577         os_sp = talloc_asprintf(mem_ctx, "Samba %s", samba_version_string());
 578         if (!os_sp) {
 579                 return ADS_ERROR(LDAP_NO_MEMORY);
 580         }
 581
 582         /* fields of primary importance */
 583
 584         status = ads_mod_str(mem_ctx, &mods, "operatingSystem",
 585                              r->in.os_name);
 586         if (!ADS_ERR_OK(status)) {
 587                 return status;
 588         }
 589
 590         status = ads_mod_str(mem_ctx, &mods, "operatingSystemVersion",
 591                              r->in.os_version);
 592         if (!ADS_ERR_OK(status)) {
 593                 return status;
 594         }
 595
 596         status = ads_mod_str(mem_ctx, &mods, "operatingSystemServicePack",
 597                              os_sp);
 598         if (!ADS_ERR_OK(status)) {
 599                 return status;
 600         }
 601
 602         return ads_gen_mod(r->in.ads, r->out.dn, mods);
 603 }
 604
 605 /****************************************************************
 606 ****************************************************************/
 607
 608 static bool libnet_join_create_keytab(TALLOC_CTX *mem_ctx,
 609                                       struct libnet_JoinCtx *r)
 610 {
 611         if (!USE_SYSTEM_KEYTAB) {
 612                 return true;
 613         }
 614
 615         if (ads_keytab_create_default(r->in.ads) != 0) {
 616                 return false;
 617         }
 618
 619         return true;
 620 }
 621
 622 /****************************************************************
 623 ****************************************************************/
 624
 625 static bool libnet_join_derive_salting_principal(TALLOC_CTX *mem_ctx,
 626                                                  struct libnet_JoinCtx *r)
 627 {
 628         uint32_t domain_func;
 629         ADS_STATUS status;
 630         const char *salt = NULL;
 631         char *std_salt = NULL;
 632
 633         status = ads_domain_func_level(r->in.ads, &domain_func);
 634         if (!ADS_ERR_OK(status)) {
 635                 libnet_join_set_error_string(mem_ctx, r,
 636                         "failed to determine domain functional level: %s",
 637                         ads_errstr(status));
 638                 return false;
 639         }
 640
 641         /* go ahead and setup the default salt */
 642
 643         std_salt = kerberos_standard_des_salt();
 644         if (!std_salt) {
 645                 libnet_join_set_error_string(mem_ctx, r,
 646                         "failed to obtain standard DES salt");
 647                 return false;
 648         }
 649
 650         salt = talloc_strdup(mem_ctx, std_salt);
 651         if (!salt) {
 652                 return false;
 653         }
 654
 655         SAFE_FREE(std_salt);
 656
 657         /* if it's a Windows functional domain, we have to look for the UPN */
 658
 659         if (domain_func == DS_DOMAIN_FUNCTION_2000) {
 660                 char *upn;
 661
 662                 upn = ads_get_upn(r->in.ads, mem_ctx,
 663                                   r->in.machine_name);
 664                 if (upn) {
 665                         salt = talloc_strdup(mem_ctx, upn);
 666                         if (!salt) {
 667                                 return false;
 668                         }
 669                 }
 670         }
 671
 672         return kerberos_secrets_store_des_salt(salt);
 673 }
 674
 675 /****************************************************************
 676 ****************************************************************/
 677
 678 static ADS_STATUS libnet_join_post_processing_ads(TALLOC_CTX *mem_ctx,
 679                                                   struct libnet_JoinCtx *r)
 680 {
 681         ADS_STATUS status;
 682
 683         if (!r->in.ads) {
 684                 status = libnet_join_connect_ads(mem_ctx, r);
 685                 if (!ADS_ERR_OK(status)) {
 686                         return status;
 687                 }
 688         }
 689
 690         status = libnet_join_set_machine_spn(mem_ctx, r);
 691         if (!ADS_ERR_OK(status)) {
 692                 libnet_join_set_error_string(mem_ctx, r,
 693                         "Failed to set machine spn: %s\n"
 694                         "Do you have sufficient permissions to create machine "
 695                         "accounts?",
 696                         ads_errstr(status));
 697                 return status;
 698         }
 699
 700         status = libnet_join_set_os_attributes(mem_ctx, r);
 701         if (!ADS_ERR_OK(status)) {
 702                 libnet_join_set_error_string(mem_ctx, r,
 703                         "failed to set machine os attributes: %s",
 704                         ads_errstr(status));
 705                 return status;
 706         }
 707
 708         status = libnet_join_set_machine_upn(mem_ctx, r);
 709         if (!ADS_ERR_OK(status)) {
 710                 libnet_join_set_error_string(mem_ctx, r,
 711                         "failed to set machine upn: %s",
 712                         ads_errstr(status));
 713                 return status;
 714         }
 715
 716         if (!libnet_join_derive_salting_principal(mem_ctx, r)) {
 717                 return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 718         }
 719
 720         if (!libnet_join_create_keytab(mem_ctx, r)) {
 721                 libnet_join_set_error_string(mem_ctx, r,
 722                         "failed to create kerberos keytab");
 723                 return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 724         }
 725
 726         return ADS_SUCCESS;
 727 }
 728 #endif /* HAVE_ADS */
 729
 730 /****************************************************************
 731  Store the machine password and domain SID
 732 ****************************************************************/
 733
 734 static bool libnet_join_joindomain_store_secrets(TALLOC_CTX *mem_ctx,
 735                                                  struct libnet_JoinCtx *r)
 736 {
 737         if (!secrets_store_domain_sid(r->out.netbios_domain_name,
 738                                       r->out.domain_sid))
 739         {
 740                 DEBUG(1,("Failed to save domain sid\n"));
 741                 return false;
 742         }
 743
 744         if (!secrets_store_machine_password(r->in.machine_password,
 745                                             r->out.netbios_domain_name,
 746                                             r->in.secure_channel_type))
 747         {
 748                 DEBUG(1,("Failed to save machine password\n"));
 749                 return false;
 750         }
 751
 752         return true;
 753 }
 754
 755 /****************************************************************
 756  Connect dc's IPC$ share
 757 ****************************************************************/
 758
 759 static NTSTATUS libnet_join_connect_dc_ipc(const char *dc,
 760                                            const char *user,
 761                                            const char *domain,
 762                                            const char *pass,
 763                                            bool use_kerberos,
 764                                            struct cli_state **cli)
 765 {
 766         int flags = 0;
 767
 768         if (use_kerberos) {
 769                 flags |= CLI_FULL_CONNECTION_USE_KERBEROS;
 770         }
 771
 772         if (use_kerberos && pass) {
 773                 flags |= CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS;
 774         }
 775
 776         return cli_full_connection(cli, NULL,
 777                                    dc,
 778                                    NULL, 0,
 779                                    "IPC$", "IPC",
 780                                    user,
 781                                    domain,
 782                                    pass,
 783                                    flags,
 784                                    SMB_SIGNING_DEFAULT);
 785 }
 786
 787 /****************************************************************
 788  Lookup domain dc's info
 789 ****************************************************************/
 790
 791 static NTSTATUS libnet_join_lookup_dc_rpc(TALLOC_CTX *mem_ctx,
 792                                           struct libnet_JoinCtx *r,
 793                                           struct cli_state **cli)
 794 {
 795         struct rpc_pipe_client *pipe_hnd = NULL;
 796         struct policy_handle lsa_pol;
 797         NTSTATUS status, result;
 798         union lsa_PolicyInformation *info = NULL;
 799         struct dcerpc_binding_handle *b;
 800
 801         status = libnet_join_connect_dc_ipc(r->in.dc_name,
 802                                             r->in.admin_account,
 803                                             r->in.admin_domain,
 804                                             r->in.admin_password,
 805                                             r->in.use_kerberos,
 806                                             cli);
 807         if (!NT_STATUS_IS_OK(status)) {
 808                 goto done;
 809         }
 810
 811         status = cli_rpc_pipe_open_noauth(*cli, &ndr_table_lsarpc,
 812                                           &pipe_hnd);
 813         if (!NT_STATUS_IS_OK(status)) {
 814                 DEBUG(0,("Error connecting to LSA pipe. Error was %s\n",
 815                         nt_errstr(status)));
 816                 goto done;
 817         }
 818
 819         b = pipe_hnd->binding_handle;
 820
 821         status = rpccli_lsa_open_policy(pipe_hnd, mem_ctx, true,
 822                                         SEC_FLAG_MAXIMUM_ALLOWED, &lsa_pol);
 823         if (!NT_STATUS_IS_OK(status)) {
 824                 goto done;
 825         }
 826
 827         status = dcerpc_lsa_QueryInfoPolicy2(b, mem_ctx,
 828                                              &lsa_pol,
 829                                              LSA_POLICY_INFO_DNS,
 830                                              &info,
 831                                              &result);
 832         if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
 833                 r->out.domain_is_ad = true;
 834                 r->out.netbios_domain_name = info->dns.name.string;
 835                 r->out.dns_domain_name = info->dns.dns_domain.string;
 836                 r->out.forest_name = info->dns.dns_forest.string;
 837                 r->out.domain_sid = dom_sid_dup(mem_ctx, info->dns.sid);
 838                 NT_STATUS_HAVE_NO_MEMORY(r->out.domain_sid);
 839         }
 840
 841         if (!NT_STATUS_IS_OK(status)) {
 842                 status = dcerpc_lsa_QueryInfoPolicy(b, mem_ctx,
 843                                                     &lsa_pol,
 844                                                     LSA_POLICY_INFO_ACCOUNT_DOMAIN,
 845                                                     &info,
 846                                                     &result);
 847                 if (!NT_STATUS_IS_OK(status)) {
 848                         goto done;
 849                 }
 850                 if (!NT_STATUS_IS_OK(result)) {
 851                         status = result;
 852                         goto done;
 853                 }
 854
 855                 r->out.netbios_domain_name = info->account_domain.name.string;
 856                 r->out.domain_sid = dom_sid_dup(mem_ctx, info->account_domain.sid);
 857                 NT_STATUS_HAVE_NO_MEMORY(r->out.domain_sid);
 858         }
 859
 860         dcerpc_lsa_Close(b, mem_ctx, &lsa_pol, &result);
 861         TALLOC_FREE(pipe_hnd);
 862
 863  done:
 864         return status;
 865 }
 866
 867 /****************************************************************
 868  Do the domain join unsecure
 869 ****************************************************************/
 870
 871 static NTSTATUS libnet_join_joindomain_rpc_unsecure(TALLOC_CTX *mem_ctx,
 872                                                     struct libnet_JoinCtx *r,
 873                                                     struct cli_state *cli)
 874 {
 875         TALLOC_CTX *frame = talloc_stackframe();
 876         struct rpc_pipe_client *netlogon_pipe = NULL;
 877         struct netlogon_creds_cli_context *netlogon_creds = NULL;
 878         struct samr_Password current_nt_hash;
 879         const char *account_name = NULL;
 880         NTSTATUS status;
 881
 882         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_netlogon,
 883                                           &netlogon_pipe);
 884         if (!NT_STATUS_IS_OK(status)) {
 885                 TALLOC_FREE(frame);
 886                 return status;
 887         }
 888
 889         if (!r->in.machine_password) {
 890                 r->in.machine_password = generate_random_password(mem_ctx,
 891                                 DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH,
 892                                 DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
 893                 if (r->in.machine_password == NULL) {
 894                         TALLOC_FREE(frame);
 895                         return NT_STATUS_NO_MEMORY;
 896                 }
 897         }
 898
 899         /* according to WKSSVC_JOIN_FLAGS_MACHINE_PWD_PASSED */
 900         E_md4hash(r->in.admin_password, current_nt_hash.hash);
 901
 902         account_name = talloc_asprintf(frame, "%s$",
 903                                        r->in.machine_name);
 904         if (account_name == NULL) {
 905                 TALLOC_FREE(frame);
 906                 return NT_STATUS_NO_MEMORY;
 907         }
 908
 909         status = rpccli_create_netlogon_creds(netlogon_pipe->desthost,
 910                                               r->in.domain_name,
 911                                               account_name,
 912                                               r->in.secure_channel_type,
 913                                               r->in.msg_ctx,
 914                                               frame,
 915                                               &netlogon_creds);
 916         if (!NT_STATUS_IS_OK(status)) {
 917                 TALLOC_FREE(frame);
 918                 return status;
 919         }
 920
 921         status = rpccli_setup_netlogon_creds(cli,
 922                                              netlogon_creds,
 923                                              true, /* force_reauth */
 924                                              current_nt_hash,
 925                                              NULL); /* previous_nt_hash */
 926         if (!NT_STATUS_IS_OK(status)) {
 927                 TALLOC_FREE(frame);
 928                 return status;
 929         }
 930
 931         status = netlogon_creds_cli_ServerPasswordSet(netlogon_creds,
 932                                                       netlogon_pipe->binding_handle,
 933                                                       r->in.machine_password,
 934                                                       NULL); /* new_version */
 935         if (!NT_STATUS_IS_OK(status)) {
 936                 TALLOC_FREE(frame);
 937                 return status;
 938         }
 939
 940         TALLOC_FREE(frame);
 941         return NT_STATUS_OK;
 942 }
 943
 944 /****************************************************************
 945  Do the domain join
 946 ****************************************************************/
 947
 948 static NTSTATUS libnet_join_joindomain_rpc(TALLOC_CTX *mem_ctx,
 949                                            struct libnet_JoinCtx *r,
 950                                            struct cli_state *cli)
 951 {
 952         struct rpc_pipe_client *pipe_hnd = NULL;
 953         struct policy_handle sam_pol, domain_pol, user_pol;
 954         NTSTATUS status = NT_STATUS_UNSUCCESSFUL, result;
 955         char *acct_name;
 956         struct lsa_String lsa_acct_name;
 957         uint32_t user_rid;
 958         uint32_t acct_flags = ACB_WSTRUST;
 959         struct samr_Ids user_rids;
 960         struct samr_Ids name_types;
 961         union samr_UserInfo user_info;
 962         struct dcerpc_binding_handle *b = NULL;
 963         unsigned int old_timeout = 0;
 964
 965         DATA_BLOB session_key = data_blob_null;
 966         struct samr_CryptPassword crypt_pwd;
 967         struct samr_CryptPasswordEx crypt_pwd_ex;
 968
 969         ZERO_STRUCT(sam_pol);
 970         ZERO_STRUCT(domain_pol);
 971         ZERO_STRUCT(user_pol);
 972
 973         switch (r->in.secure_channel_type) {
 974         case SEC_CHAN_WKSTA:
 975                 acct_flags = ACB_WSTRUST;
 976                 break;
 977         case SEC_CHAN_BDC:
 978                 acct_flags = ACB_SVRTRUST;
 979                 break;
 980         default:
 981                 return NT_STATUS_INVALID_PARAMETER;
 982         }
 983
 984         if (!r->in.machine_password) {
 985                 r->in.machine_password = generate_random_password(mem_ctx,
 986                                 DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH,
 987                                 DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
 988                 NT_STATUS_HAVE_NO_MEMORY(r->in.machine_password);
 989         }
 990
 991         /* Open the domain */
 992
 993         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_samr,
 994                                           &pipe_hnd);
 995         if (!NT_STATUS_IS_OK(status)) {
 996                 DEBUG(0,("Error connecting to SAM pipe. Error was %s\n",
 997                         nt_errstr(status)));
 998                 goto done;
 999         }
1000
1001         b = pipe_hnd->binding_handle;
1002
1003         status = cli_get_session_key(mem_ctx, pipe_hnd, &session_key);
1004         if (!NT_STATUS_IS_OK(status)) {
1005                 DEBUG(0,("Error getting session_key of SAM pipe. Error was %s\n",
1006                         nt_errstr(status)));
1007                 goto done;
1008         }
1009
1010         status = dcerpc_samr_Connect2(b, mem_ctx,
1011                                       pipe_hnd->desthost,
1012                                       SAMR_ACCESS_ENUM_DOMAINS
1013                                       | SAMR_ACCESS_LOOKUP_DOMAIN,
1014                                       &sam_pol,
1015                                       &result);
1016         if (!NT_STATUS_IS_OK(status)) {
1017                 goto done;
1018         }
1019         if (!NT_STATUS_IS_OK(result)) {
1020                 status = result;
1021                 goto done;
1022         }
1023
1024         status = dcerpc_samr_OpenDomain(b, mem_ctx,
1025                                         &sam_pol,
1026                                         SAMR_DOMAIN_ACCESS_LOOKUP_INFO_1
1027                                         | SAMR_DOMAIN_ACCESS_CREATE_USER
1028                                         | SAMR_DOMAIN_ACCESS_OPEN_ACCOUNT,
1029                                         r->out.domain_sid,
1030                                         &domain_pol,
1031                                         &result);
1032         if (!NT_STATUS_IS_OK(status)) {
1033                 goto done;
1034         }
1035         if (!NT_STATUS_IS_OK(result)) {
1036                 status = result;
1037                 goto done;
1038         }
1039
1040         /* Create domain user */
1041
1042         acct_name = talloc_asprintf(mem_ctx, "%s$", r->in.machine_name);
1043         if (!strlower_m(acct_name)) {
1044                 status = NT_STATUS_INVALID_PARAMETER;
1045                 goto done;
1046         }
1047
1048         init_lsa_String(&lsa_acct_name, acct_name);
1049
1050         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_CREATE) {
1051                 uint32_t access_desired =
1052                         SEC_GENERIC_READ | SEC_GENERIC_WRITE | SEC_GENERIC_EXECUTE |
1053                         SEC_STD_WRITE_DAC | SEC_STD_DELETE |
1054                         SAMR_USER_ACCESS_SET_PASSWORD |
1055                         SAMR_USER_ACCESS_GET_ATTRIBUTES |
1056                         SAMR_USER_ACCESS_SET_ATTRIBUTES;
1057                 uint32_t access_granted = 0;
1058
1059                 DEBUG(10,("Creating account with desired access mask: %d\n",
1060                         access_desired));
1061
1062                 status = dcerpc_samr_CreateUser2(b, mem_ctx,
1063                                                  &domain_pol,
1064                                                  &lsa_acct_name,
1065                                                  acct_flags,
1066                                                  access_desired,
1067                                                  &user_pol,
1068                                                  &access_granted,
1069                                                  &user_rid,
1070                                                  &result);
1071                 if (!NT_STATUS_IS_OK(status)) {
1072                         goto done;
1073                 }
1074
1075                 status = result;
1076                 if (!NT_STATUS_IS_OK(status) &&
1077                     !NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
1078
1079                         DEBUG(10,("Creation of workstation account failed: %s\n",
1080                                 nt_errstr(status)));
1081
1082                         /* If NT_STATUS_ACCESS_DENIED then we have a valid
1083                            username/password combo but the user does not have
1084                            administrator access. */
1085
1086                         if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
1087                                 libnet_join_set_error_string(mem_ctx, r,
1088                                         "User specified does not have "
1089                                         "administrator privileges");
1090                         }
1091
1092                         goto done;
1093                 }
1094
1095                 if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
1096                         if (!(r->in.join_flags &
1097                               WKSSVC_JOIN_FLAGS_DOMAIN_JOIN_IF_JOINED)) {
1098                                 goto done;
1099                         }
1100                 }
1101
1102                 /* We *must* do this.... don't ask... */
1103
1104                 if (NT_STATUS_IS_OK(status)) {
1105                         dcerpc_samr_Close(b, mem_ctx, &user_pol, &result);
1106                 }
1107         }
1108
1109         status = dcerpc_samr_LookupNames(b, mem_ctx,
1110                                          &domain_pol,
1111                                          1,
1112                                          &lsa_acct_name,
1113                                          &user_rids,
1114                                          &name_types,
1115                                          &result);
1116         if (!NT_STATUS_IS_OK(status)) {
1117                 goto done;
1118         }
1119         if (!NT_STATUS_IS_OK(result)) {
1120                 status = result;
1121                 goto done;
1122         }
1123         if (user_rids.count != 1) {
1124                 status = NT_STATUS_INVALID_NETWORK_RESPONSE;
1125                 goto done;
1126         }
1127         if (name_types.count != 1) {
1128                 status = NT_STATUS_INVALID_NETWORK_RESPONSE;
1129                 goto done;
1130         }
1131
1132         if (name_types.ids[0] != SID_NAME_USER) {
1133                 DEBUG(0,("%s is not a user account (type=%d)\n",
1134                         acct_name, name_types.ids[0]));
1135                 status = NT_STATUS_INVALID_WORKSTATION;
1136                 goto done;
1137         }
1138
1139         user_rid = user_rids.ids[0];
1140
1141         /* Open handle on user */
1142
1143         status = dcerpc_samr_OpenUser(b, mem_ctx,
1144                                       &domain_pol,
1145                                       SEC_FLAG_MAXIMUM_ALLOWED,
1146                                       user_rid,
1147                                       &user_pol,
1148                                       &result);
1149         if (!NT_STATUS_IS_OK(status)) {
1150                 goto done;
1151         }
1152         if (!NT_STATUS_IS_OK(result)) {
1153                 status = result;
1154                 goto done;
1155         }
1156
1157         /* Fill in the additional account flags now */
1158
1159         acct_flags |= ACB_PWNOEXP;
1160
1161         /* Set account flags on machine account */
1162         ZERO_STRUCT(user_info.info16);
1163         user_info.info16.acct_flags = acct_flags;
1164
1165         status = dcerpc_samr_SetUserInfo(b, mem_ctx,
1166                                          &user_pol,
1167                                          16,
1168                                          &user_info,
1169                                          &result);
1170         if (!NT_STATUS_IS_OK(status)) {
1171                 dcerpc_samr_DeleteUser(b, mem_ctx,
1172                                        &user_pol,
1173                                        &result);
1174
1175                 libnet_join_set_error_string(mem_ctx, r,
1176                         "Failed to set account flags for machine account (%s)\n",
1177                         nt_errstr(status));
1178                 goto done;
1179         }
1180
1181         if (!NT_STATUS_IS_OK(result)) {
1182                 status = result;
1183
1184                 dcerpc_samr_DeleteUser(b, mem_ctx,
1185                                        &user_pol,
1186                                        &result);
1187
1188                 libnet_join_set_error_string(mem_ctx, r,
1189                         "Failed to set account flags for machine account (%s)\n",
1190                         nt_errstr(status));
1191                 goto done;
1192         }
1193
1194         /* Set password on machine account - first try level 26 */
1195
1196         /*
1197          * increase the timeout as password filter modules on the DC
1198          * might delay the operation for a significant amount of time
1199          */
1200         old_timeout = rpccli_set_timeout(pipe_hnd, 600000);
1201
1202         init_samr_CryptPasswordEx(r->in.machine_password,
1203                                   &session_key,
1204                                   &crypt_pwd_ex);
1205
1206         user_info.info26.password = crypt_pwd_ex;
1207         user_info.info26.password_expired = PASS_DONT_CHANGE_AT_NEXT_LOGON;
1208
1209         status = dcerpc_samr_SetUserInfo2(b, mem_ctx,
1210                                           &user_pol,
1211                                           26,
1212                                           &user_info,
1213                                           &result);
1214
1215         if (NT_STATUS_EQUAL(status, NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE)) {
1216
1217                 /* retry with level 24 */
1218
1219                 init_samr_CryptPassword(r->in.machine_password,
1220                                         &session_key,
1221                                         &crypt_pwd);
1222
1223                 user_info.info24.password = crypt_pwd;
1224                 user_info.info24.password_expired = PASS_DONT_CHANGE_AT_NEXT_LOGON;
1225
1226                 status = dcerpc_samr_SetUserInfo2(b, mem_ctx,
1227                                                   &user_pol,
1228                                                   24,
1229                                                   &user_info,
1230                                                   &result);
1231         }
1232
1233         old_timeout = rpccli_set_timeout(pipe_hnd, old_timeout);
1234
1235         if (!NT_STATUS_IS_OK(status)) {
1236
1237                 dcerpc_samr_DeleteUser(b, mem_ctx,
1238                                        &user_pol,
1239                                        &result);
1240
1241                 libnet_join_set_error_string(mem_ctx, r,
1242                         "Failed to set password for machine account (%s)\n",
1243                         nt_errstr(status));
1244                 goto done;
1245         }
1246         if (!NT_STATUS_IS_OK(result)) {
1247                 status = result;
1248
1249                 dcerpc_samr_DeleteUser(b, mem_ctx,
1250                                        &user_pol,
1251                                        &result);
1252
1253                 libnet_join_set_error_string(mem_ctx, r,
1254                         "Failed to set password for machine account (%s)\n",
1255                         nt_errstr(status));
1256                 goto done;
1257         }
1258
1259         status = NT_STATUS_OK;
1260
1261  done:
1262         if (!pipe_hnd) {
1263                 return status;
1264         }
1265
1266         data_blob_clear_free(&session_key);
1267
1268         if (is_valid_policy_hnd(&sam_pol)) {
1269                 dcerpc_samr_Close(b, mem_ctx, &sam_pol, &result);
1270         }
1271         if (is_valid_policy_hnd(&domain_pol)) {
1272                 dcerpc_samr_Close(b, mem_ctx, &domain_pol, &result);
1273         }
1274         if (is_valid_policy_hnd(&user_pol)) {
1275                 dcerpc_samr_Close(b, mem_ctx, &user_pol, &result);
1276         }
1277         TALLOC_FREE(pipe_hnd);
1278
1279         return status;
1280 }
1281
1282 /****************************************************************
1283 ****************************************************************/
1284
1285 NTSTATUS libnet_join_ok(struct messaging_context *msg_ctx,
1286                         const char *netbios_domain_name,
1287                         const char *dc_name,
1288                         const bool use_kerberos)
1289 {
1290         TALLOC_CTX *frame = talloc_stackframe();
1291         struct cli_state *cli = NULL;
1292         struct rpc_pipe_client *netlogon_pipe = NULL;
1293         struct netlogon_creds_cli_context *netlogon_creds = NULL;
1294         struct netlogon_creds_CredentialState *creds = NULL;
1295         uint32_t netlogon_flags = 0;
1296         enum netr_SchannelType sec_chan_type = 0;
1297         NTSTATUS status;
1298         char *machine_password = NULL;
1299         const char *machine_name = NULL;
1300         const char *machine_account = NULL;
1301         int flags = 0;
1302         struct samr_Password current_nt_hash;
1303         struct samr_Password *previous_nt_hash = NULL;
1304         bool ok;
1305
1306         if (!dc_name) {
1307                 TALLOC_FREE(frame);
1308                 return NT_STATUS_INVALID_PARAMETER;
1309         }
1310
1311         if (!secrets_init()) {
1312                 TALLOC_FREE(frame);
1313                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1314         }
1315
1316         ok = get_trust_pw_clear(netbios_domain_name,
1317                                 &machine_password,
1318                                 &machine_name,
1319                                 &sec_chan_type);
1320         if (!ok) {
1321                 TALLOC_FREE(frame);
1322                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1323         }
1324
1325         machine_account = talloc_asprintf(frame, "%s$", machine_name);
1326         if (machine_account == NULL) {
1327                 SAFE_FREE(machine_password);
1328                 SAFE_FREE(previous_nt_hash);
1329                 TALLOC_FREE(frame);
1330                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1331         }
1332
1333         if (use_kerberos) {
1334                 flags |= CLI_FULL_CONNECTION_USE_KERBEROS;
1335         }
1336
1337         status = cli_full_connection(&cli, NULL,
1338                                      dc_name,
1339                                      NULL, 0,
1340                                      "IPC$", "IPC",
1341                                      machine_account,
1342                                      netbios_domain_name,
1343                                      machine_password,
1344                                      flags,
1345                                      SMB_SIGNING_DEFAULT);
1346
1347         E_md4hash(machine_password, current_nt_hash.hash);
1348         SAFE_FREE(machine_password);
1349
1350         if (!NT_STATUS_IS_OK(status)) {
1351                 status = cli_full_connection(&cli, NULL,
1352                                              dc_name,
1353                                              NULL, 0,
1354                                              "IPC$", "IPC",
1355                                              "",
1356                                              NULL,
1357                                              "",
1358                                              0,
1359                                              SMB_SIGNING_DEFAULT);
1360         }
1361
1362         if (!NT_STATUS_IS_OK(status)) {
1363                 SAFE_FREE(previous_nt_hash);
1364                 TALLOC_FREE(frame);
1365                 return status;
1366         }
1367
1368         status = rpccli_create_netlogon_creds(dc_name,
1369                                               netbios_domain_name,
1370                                               machine_account,
1371                                               sec_chan_type,
1372                                               msg_ctx,
1373                                               frame,
1374                                               &netlogon_creds);
1375         if (!NT_STATUS_IS_OK(status)) {
1376                 SAFE_FREE(previous_nt_hash);
1377                 cli_shutdown(cli);
1378                 TALLOC_FREE(frame);
1379                 return status;
1380         }
1381
1382         status = rpccli_setup_netlogon_creds(cli,
1383                                              netlogon_creds,
1384                                              true, /* force_reauth */
1385                                              current_nt_hash,
1386                                              previous_nt_hash);
1387         SAFE_FREE(previous_nt_hash);
1388         if (!NT_STATUS_IS_OK(status)) {
1389                 DEBUG(0,("connect_to_domain_password_server: "
1390                          "unable to open the domain client session to "
1391                          "machine %s. Flags[0x%08X] Error was : %s.\n",
1392                          dc_name, (unsigned)netlogon_flags,
1393                          nt_errstr(status)));
1394                 cli_shutdown(cli);
1395                 TALLOC_FREE(frame);
1396                 return status;
1397         }
1398
1399         status = netlogon_creds_cli_get(netlogon_creds,
1400                                         talloc_tos(),
1401                                         &creds);
1402         if (!NT_STATUS_IS_OK(status)) {
1403                 cli_shutdown(cli);
1404                 TALLOC_FREE(frame);
1405                 return status;
1406         }
1407         netlogon_flags = creds->negotiate_flags;
1408         TALLOC_FREE(creds);
1409
1410         if (!(netlogon_flags & NETLOGON_NEG_AUTHENTICATED_RPC)) {
1411                 cli_shutdown(cli);
1412                 TALLOC_FREE(frame);
1413                 return NT_STATUS_OK;
1414         }
1415
1416         status = cli_rpc_pipe_open_schannel_with_key(
1417                 cli, &ndr_table_netlogon, NCACN_NP,
1418                 netbios_domain_name,
1419                 netlogon_creds, &netlogon_pipe);
1420
1421         TALLOC_FREE(netlogon_pipe);
1422
1423         if (!NT_STATUS_IS_OK(status)) {
1424                 DEBUG(0,("libnet_join_ok: failed to open schannel session "
1425                         "on netlogon pipe to server %s for domain %s. "
1426                         "Error was %s\n",
1427                         smbXcli_conn_remote_name(cli->conn),
1428                         netbios_domain_name, nt_errstr(status)));
1429                 cli_shutdown(cli);
1430                 TALLOC_FREE(frame);
1431                 return status;
1432         }
1433
1434         cli_shutdown(cli);
1435         TALLOC_FREE(frame);
1436         return NT_STATUS_OK;
1437 }
1438
1439 /****************************************************************
1440 ****************************************************************/
1441
1442 static WERROR libnet_join_post_verify(TALLOC_CTX *mem_ctx,
1443                                       struct libnet_JoinCtx *r)
1444 {
1445         NTSTATUS status;
1446
1447         status = libnet_join_ok(r->in.msg_ctx,
1448                                 r->out.netbios_domain_name,
1449                                 r->in.dc_name,
1450                                 r->in.use_kerberos);
1451         if (!NT_STATUS_IS_OK(status)) {
1452                 libnet_join_set_error_string(mem_ctx, r,
1453                         "failed to verify domain membership after joining: %s",
1454                         get_friendly_nt_error_msg(status));
1455                 return WERR_SETUP_NOT_JOINED;
1456         }
1457
1458         return WERR_OK;
1459 }
1460
1461 /****************************************************************
1462 ****************************************************************/
1463
1464 static bool libnet_join_unjoindomain_remove_secrets(TALLOC_CTX *mem_ctx,
1465                                                     struct libnet_UnjoinCtx *r)
1466 {
1467         if (!secrets_delete_machine_password_ex(lp_workgroup())) {
1468                 return false;
1469         }
1470
1471         if (!secrets_delete_domain_sid(lp_workgroup())) {
1472                 return false;
1473         }
1474
1475         return true;
1476 }
1477
1478 /****************************************************************
1479 ****************************************************************/
1480
1481 static NTSTATUS libnet_join_unjoindomain_rpc(TALLOC_CTX *mem_ctx,
1482                                              struct libnet_UnjoinCtx *r)
1483 {
1484         struct cli_state *cli = NULL;
1485         struct rpc_pipe_client *pipe_hnd = NULL;
1486         struct policy_handle sam_pol, domain_pol, user_pol;
1487         NTSTATUS status = NT_STATUS_UNSUCCESSFUL, result;
1488         char *acct_name;
1489         uint32_t user_rid;
1490         struct lsa_String lsa_acct_name;
1491         struct samr_Ids user_rids;
1492         struct samr_Ids name_types;
1493         union samr_UserInfo *info = NULL;
1494         struct dcerpc_binding_handle *b = NULL;
1495
1496         ZERO_STRUCT(sam_pol);
1497         ZERO_STRUCT(domain_pol);
1498         ZERO_STRUCT(user_pol);
1499
1500         status = libnet_join_connect_dc_ipc(r->in.dc_name,
1501                                             r->in.admin_account,
1502                                             r->in.admin_domain,
1503                                             r->in.admin_password,
1504                                             r->in.use_kerberos,
1505                                             &cli);
1506         if (!NT_STATUS_IS_OK(status)) {
1507                 goto done;
1508         }
1509
1510         /* Open the domain */
1511
1512         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_samr,
1513                                           &pipe_hnd);
1514         if (!NT_STATUS_IS_OK(status)) {
1515                 DEBUG(0,("Error connecting to SAM pipe. Error was %s\n",
1516                         nt_errstr(status)));
1517                 goto done;
1518         }
1519
1520         b = pipe_hnd->binding_handle;
1521
1522         status = dcerpc_samr_Connect2(b, mem_ctx,
1523                                       pipe_hnd->desthost,
1524                                       SEC_FLAG_MAXIMUM_ALLOWED,
1525                                       &sam_pol,
1526                                       &result);
1527         if (!NT_STATUS_IS_OK(status)) {
1528                 goto done;
1529         }
1530         if (!NT_STATUS_IS_OK(result)) {
1531                 status = result;
1532                 goto done;
1533         }
1534
1535         status = dcerpc_samr_OpenDomain(b, mem_ctx,
1536                                         &sam_pol,
1537                                         SEC_FLAG_MAXIMUM_ALLOWED,
1538                                         r->in.domain_sid,
1539                                         &domain_pol,
1540                                         &result);
1541         if (!NT_STATUS_IS_OK(status)) {
1542                 goto done;
1543         }
1544         if (!NT_STATUS_IS_OK(result)) {
1545                 status = result;
1546                 goto done;
1547         }
1548
1549         /* Create domain user */
1550
1551         acct_name = talloc_asprintf(mem_ctx, "%s$", r->in.machine_name);
1552         if (!strlower_m(acct_name)) {
1553                 status = NT_STATUS_INVALID_PARAMETER;
1554                 goto done;
1555         }
1556
1557         init_lsa_String(&lsa_acct_name, acct_name);
1558
1559         status = dcerpc_samr_LookupNames(b, mem_ctx,
1560                                          &domain_pol,
1561                                          1,
1562                                          &lsa_acct_name,
1563                                          &user_rids,
1564                                          &name_types,
1565                                          &result);
1566
1567         if (!NT_STATUS_IS_OK(status)) {
1568                 goto done;
1569         }
1570         if (!NT_STATUS_IS_OK(result)) {
1571                 status = result;
1572                 goto done;
1573         }
1574         if (user_rids.count != 1) {
1575                 status = NT_STATUS_INVALID_NETWORK_RESPONSE;
1576                 goto done;
1577         }
1578         if (name_types.count != 1) {
1579                 status = NT_STATUS_INVALID_NETWORK_RESPONSE;
1580                 goto done;
1581         }
1582
1583         if (name_types.ids[0] != SID_NAME_USER) {
1584                 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name,
1585                         name_types.ids[0]));
1586                 status = NT_STATUS_INVALID_WORKSTATION;
1587                 goto done;
1588         }
1589
1590         user_rid = user_rids.ids[0];
1591
1592         /* Open handle on user */
1593
1594         status = dcerpc_samr_OpenUser(b, mem_ctx,
1595                                       &domain_pol,
1596                                       SEC_FLAG_MAXIMUM_ALLOWED,
1597                                       user_rid,
1598                                       &user_pol,
1599                                       &result);
1600         if (!NT_STATUS_IS_OK(status)) {
1601                 goto done;
1602         }
1603         if (!NT_STATUS_IS_OK(result)) {
1604                 status = result;
1605                 goto done;
1606         }
1607
1608         /* Get user info */
1609
1610         status = dcerpc_samr_QueryUserInfo(b, mem_ctx,
1611                                            &user_pol,
1612                                            16,
1613                                            &info,
1614                                            &result);
1615         if (!NT_STATUS_IS_OK(status)) {
1616                 dcerpc_samr_Close(b, mem_ctx, &user_pol, &result);
1617                 goto done;
1618         }
1619         if (!NT_STATUS_IS_OK(result)) {
1620                 status = result;
1621                 dcerpc_samr_Close(b, mem_ctx, &user_pol, &result);
1622                 goto done;
1623         }
1624
1625         /* now disable and setuser info */
1626
1627         info->info16.acct_flags |= ACB_DISABLED;
1628
1629         status = dcerpc_samr_SetUserInfo(b, mem_ctx,
1630                                          &user_pol,
1631                                          16,
1632                                          info,
1633                                          &result);
1634         if (!NT_STATUS_IS_OK(status)) {
1635                 dcerpc_samr_Close(b, mem_ctx, &user_pol, &result);
1636                 goto done;
1637         }
1638         if (!NT_STATUS_IS_OK(result)) {
1639                 status = result;
1640                 dcerpc_samr_Close(b, mem_ctx, &user_pol, &result);
1641                 goto done;
1642         }
1643         status = result;
1644         dcerpc_samr_Close(b, mem_ctx, &user_pol, &result);
1645
1646 done:
1647         if (pipe_hnd && b) {
1648                 if (is_valid_policy_hnd(&domain_pol)) {
1649                         dcerpc_samr_Close(b, mem_ctx, &domain_pol, &result);
1650                 }
1651                 if (is_valid_policy_hnd(&sam_pol)) {
1652                         dcerpc_samr_Close(b, mem_ctx, &sam_pol, &result);
1653                 }
1654                 TALLOC_FREE(pipe_hnd);
1655         }
1656
1657         if (cli) {
1658                 cli_shutdown(cli);
1659         }
1660
1661         return status;
1662 }
1663
1664 /****************************************************************
1665 ****************************************************************/
1666
1667 static WERROR do_join_modify_vals_config(struct libnet_JoinCtx *r)
1668 {
1669         WERROR werr = WERR_OK;
1670         sbcErr err;
1671         struct smbconf_ctx *ctx;
1672
1673         err = smbconf_init_reg(r, &ctx, NULL);
1674         if (!SBC_ERROR_IS_OK(err)) {
1675                 werr = WERR_NO_SUCH_SERVICE;
1676                 goto done;
1677         }
1678
1679         if (!(r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE)) {
1680
1681                 err = smbconf_set_global_parameter(ctx, "security", "user");
1682                 if (!SBC_ERROR_IS_OK(err)) {
1683                         werr = WERR_NO_SUCH_SERVICE;
1684                         goto done;
1685                 }
1686
1687                 err = smbconf_set_global_parameter(ctx, "workgroup",
1688                                                    r->in.domain_name);
1689                 if (!SBC_ERROR_IS_OK(err)) {
1690                         werr = WERR_NO_SUCH_SERVICE;
1691                         goto done;
1692                 }
1693
1694                 smbconf_delete_global_parameter(ctx, "realm");
1695                 goto done;
1696         }
1697
1698         err = smbconf_set_global_parameter(ctx, "security", "domain");
1699         if (!SBC_ERROR_IS_OK(err)) {
1700                 werr = WERR_NO_SUCH_SERVICE;
1701                 goto done;
1702         }
1703
1704         err = smbconf_set_global_parameter(ctx, "workgroup",
1705                                            r->out.netbios_domain_name);
1706         if (!SBC_ERROR_IS_OK(err)) {
1707                 werr = WERR_NO_SUCH_SERVICE;
1708                 goto done;
1709         }
1710
1711         if (r->out.domain_is_ad) {
1712                 err = smbconf_set_global_parameter(ctx, "security", "ads");
1713                 if (!SBC_ERROR_IS_OK(err)) {
1714                         werr = WERR_NO_SUCH_SERVICE;
1715                         goto done;
1716                 }
1717
1718                 err = smbconf_set_global_parameter(ctx, "realm",
1719                                                    r->out.dns_domain_name);
1720                 if (!SBC_ERROR_IS_OK(err)) {
1721                         werr = WERR_NO_SUCH_SERVICE;
1722                         goto done;
1723                 }
1724         }
1725
1726  done:
1727         smbconf_shutdown(ctx);
1728         return werr;
1729 }
1730
1731 /****************************************************************
1732 ****************************************************************/
1733
1734 static WERROR do_unjoin_modify_vals_config(struct libnet_UnjoinCtx *r)
1735 {
1736         WERROR werr = WERR_OK;
1737         sbcErr err;
1738         struct smbconf_ctx *ctx;
1739
1740         err = smbconf_init_reg(r, &ctx, NULL);
1741         if (!SBC_ERROR_IS_OK(err)) {
1742                 werr = WERR_NO_SUCH_SERVICE;
1743                 goto done;
1744         }
1745
1746         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1747
1748                 err = smbconf_set_global_parameter(ctx, "security", "user");
1749                 if (!SBC_ERROR_IS_OK(err)) {
1750                         werr = WERR_NO_SUCH_SERVICE;
1751                         goto done;
1752                 }
1753
1754                 err = smbconf_delete_global_parameter(ctx, "workgroup");
1755                 if (!SBC_ERROR_IS_OK(err)) {
1756                         werr = WERR_NO_SUCH_SERVICE;
1757                         goto done;
1758                 }
1759
1760                 smbconf_delete_global_parameter(ctx, "realm");
1761         }
1762
1763  done:
1764         smbconf_shutdown(ctx);
1765         return werr;
1766 }
1767
1768 /****************************************************************
1769 ****************************************************************/
1770
1771 static WERROR do_JoinConfig(struct libnet_JoinCtx *r)
1772 {
1773         WERROR werr;
1774
1775         if (!W_ERROR_IS_OK(r->out.result)) {
1776                 return r->out.result;
1777         }
1778
1779         if (!r->in.modify_config) {
1780                 return WERR_OK;
1781         }
1782
1783         werr = do_join_modify_vals_config(r);
1784         if (!W_ERROR_IS_OK(werr)) {
1785                 return werr;
1786         }
1787
1788         lp_load_global(get_dyn_CONFIGFILE());
1789
1790         r->out.modified_config = true;
1791         r->out.result = werr;
1792
1793         return werr;
1794 }
1795
1796 /****************************************************************
1797 ****************************************************************/
1798
1799 static WERROR libnet_unjoin_config(struct libnet_UnjoinCtx *r)
1800 {
1801         WERROR werr;
1802
1803         if (!W_ERROR_IS_OK(r->out.result)) {
1804                 return r->out.result;
1805         }
1806
1807         if (!r->in.modify_config) {
1808                 return WERR_OK;
1809         }
1810
1811         werr = do_unjoin_modify_vals_config(r);
1812         if (!W_ERROR_IS_OK(werr)) {
1813                 return werr;
1814         }
1815
1816         lp_load_global(get_dyn_CONFIGFILE());
1817
1818         r->out.modified_config = true;
1819         r->out.result = werr;
1820
1821         return werr;
1822 }
1823
1824 /****************************************************************
1825 ****************************************************************/
1826
1827 static bool libnet_parse_domain_dc(TALLOC_CTX *mem_ctx,
1828                                    const char *domain_str,
1829                                    const char **domain_p,
1830                                    const char **dc_p)
1831 {
1832         char *domain = NULL;
1833         char *dc = NULL;
1834         const char *p = NULL;
1835
1836         if (!domain_str || !domain_p || !dc_p) {
1837                 return false;
1838         }
1839
1840         p = strchr_m(domain_str, '\\');
1841
1842         if (p != NULL) {
1843                 domain = talloc_strndup(mem_ctx, domain_str,
1844                                          PTR_DIFF(p, domain_str));
1845                 dc = talloc_strdup(mem_ctx, p+1);
1846                 if (!dc) {
1847                         return false;
1848                 }
1849         } else {
1850                 domain = talloc_strdup(mem_ctx, domain_str);
1851                 dc = NULL;
1852         }
1853         if (!domain) {
1854                 return false;
1855         }
1856
1857         *domain_p = domain;
1858
1859         if (!*dc_p && dc) {
1860                 *dc_p = dc;
1861         }
1862
1863         return true;
1864 }
1865
1866 /****************************************************************
1867 ****************************************************************/
1868
1869 static WERROR libnet_join_pre_processing(TALLOC_CTX *mem_ctx,
1870                                          struct libnet_JoinCtx *r)
1871 {
1872         if (!r->in.domain_name) {
1873                 libnet_join_set_error_string(mem_ctx, r,
1874                         "No domain name defined");
1875                 return WERR_INVALID_PARAM;
1876         }
1877
1878         if (strlen(r->in.machine_name) > 15) {
1879                 libnet_join_set_error_string(mem_ctx, r,
1880                         "Our netbios name can be at most 15 chars long, "
1881                          "\"%s\" is %u chars long\n",
1882                          r->in.machine_name,
1883                          (unsigned int)strlen(r->in.machine_name));
1884                 return WERR_INVALID_PARAM;
1885         }
1886
1887         if (!libnet_parse_domain_dc(mem_ctx, r->in.domain_name,
1888                                     &r->in.domain_name,
1889                                     &r->in.dc_name)) {
1890                 libnet_join_set_error_string(mem_ctx, r,
1891                         "Failed to parse domain name");
1892                 return WERR_INVALID_PARAM;
1893         }
1894
1895         if (IS_DC) {
1896                 return WERR_SETUP_DOMAIN_CONTROLLER;
1897         }
1898
1899         if (!r->in.admin_domain) {
1900                 char *admin_domain = NULL;
1901                 char *admin_account = NULL;
1902                 split_domain_user(mem_ctx,
1903                                   r->in.admin_account,
1904                                   &admin_domain,
1905                                   &admin_account);
1906                 r->in.admin_domain = admin_domain;
1907                 r->in.admin_account = admin_account;
1908         }
1909
1910         if (!secrets_init()) {
1911                 libnet_join_set_error_string(mem_ctx, r,
1912                         "Unable to open secrets database");
1913                 return WERR_CAN_NOT_COMPLETE;
1914         }
1915
1916         return WERR_OK;
1917 }
1918
1919 /****************************************************************
1920 ****************************************************************/
1921
1922 static void libnet_join_add_dom_rids_to_builtins(struct dom_sid *domain_sid)
1923 {
1924         NTSTATUS status;
1925
1926         /* Try adding dom admins to builtin\admins. Only log failures. */
1927         status = create_builtin_administrators(domain_sid);
1928         if (NT_STATUS_EQUAL(status, NT_STATUS_PROTOCOL_UNREACHABLE)) {
1929                 DEBUG(10,("Unable to auto-add domain administrators to "
1930                           "BUILTIN\\Administrators during join because "
1931                           "winbindd must be running.\n"));
1932         } else if (!NT_STATUS_IS_OK(status)) {
1933                 DEBUG(5, ("Failed to auto-add domain administrators to "
1934                           "BUILTIN\\Administrators during join: %s\n",
1935                           nt_errstr(status)));
1936         }
1937
1938         /* Try adding dom users to builtin\users. Only log failures. */
1939         status = create_builtin_users(domain_sid);
1940         if (NT_STATUS_EQUAL(status, NT_STATUS_PROTOCOL_UNREACHABLE)) {
1941                 DEBUG(10,("Unable to auto-add domain users to BUILTIN\\users "
1942                           "during join because winbindd must be running.\n"));
1943         } else if (!NT_STATUS_IS_OK(status)) {
1944                 DEBUG(5, ("Failed to auto-add domain administrators to "
1945                           "BUILTIN\\Administrators during join: %s\n",
1946                           nt_errstr(status)));
1947         }
1948 }
1949
1950 /****************************************************************
1951 ****************************************************************/
1952
1953 static WERROR libnet_join_post_processing(TALLOC_CTX *mem_ctx,
1954                                           struct libnet_JoinCtx *r)
1955 {
1956         WERROR werr;
1957
1958         if (!W_ERROR_IS_OK(r->out.result)) {
1959                 return r->out.result;
1960         }
1961
1962         werr = do_JoinConfig(r);
1963         if (!W_ERROR_IS_OK(werr)) {
1964                 return werr;
1965         }
1966
1967         if (!(r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE)) {
1968                 return WERR_OK;
1969         }
1970
1971         saf_join_store(r->out.netbios_domain_name, r->in.dc_name);
1972         if (r->out.dns_domain_name) {
1973                 saf_join_store(r->out.dns_domain_name, r->in.dc_name);
1974         }
1975
1976 #ifdef HAVE_ADS
1977         if (r->out.domain_is_ad &&
1978             !(r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_UNSECURE)) {
1979                 ADS_STATUS ads_status;
1980
1981                 ads_status  = libnet_join_post_processing_ads(mem_ctx, r);
1982                 if (!ADS_ERR_OK(ads_status)) {
1983                         return WERR_GENERAL_FAILURE;
1984                 }
1985         }
1986 #endif /* HAVE_ADS */
1987
1988         libnet_join_add_dom_rids_to_builtins(r->out.domain_sid);
1989
1990         return WERR_OK;
1991 }
1992
1993 /****************************************************************
1994 ****************************************************************/
1995
1996 static int libnet_destroy_JoinCtx(struct libnet_JoinCtx *r)
1997 {
1998         if (r->in.ads) {
1999                 ads_destroy(&r->in.ads);
2000         }
2001
2002         return 0;
2003 }
2004
2005 /****************************************************************
2006 ****************************************************************/
2007
2008 static int libnet_destroy_UnjoinCtx(struct libnet_UnjoinCtx *r)
2009 {
2010         if (r->in.ads) {
2011                 ads_destroy(&r->in.ads);
2012         }
2013
2014         return 0;
2015 }
2016
2017 /****************************************************************
2018 ****************************************************************/
2019
2020 WERROR libnet_init_JoinCtx(TALLOC_CTX *mem_ctx,
2021                            struct libnet_JoinCtx **r)
2022 {
2023         struct libnet_JoinCtx *ctx;
2024
2025         ctx = talloc_zero(mem_ctx, struct libnet_JoinCtx);
2026         if (!ctx) {
2027                 return WERR_NOMEM;
2028         }
2029
2030         talloc_set_destructor(ctx, libnet_destroy_JoinCtx);
2031
2032         ctx->in.machine_name = talloc_strdup(mem_ctx, lp_netbios_name());
2033         W_ERROR_HAVE_NO_MEMORY(ctx->in.machine_name);
2034
2035         ctx->in.secure_channel_type = SEC_CHAN_WKSTA;
2036
2037         *r = ctx;
2038
2039         return WERR_OK;
2040 }
2041
2042 /****************************************************************
2043 ****************************************************************/
2044
2045 WERROR libnet_init_UnjoinCtx(TALLOC_CTX *mem_ctx,
2046                              struct libnet_UnjoinCtx **r)
2047 {
2048         struct libnet_UnjoinCtx *ctx;
2049
2050         ctx = talloc_zero(mem_ctx, struct libnet_UnjoinCtx);
2051         if (!ctx) {
2052                 return WERR_NOMEM;
2053         }
2054
2055         talloc_set_destructor(ctx, libnet_destroy_UnjoinCtx);
2056
2057         ctx->in.machine_name = talloc_strdup(mem_ctx, lp_netbios_name());
2058         W_ERROR_HAVE_NO_MEMORY(ctx->in.machine_name);
2059
2060         *r = ctx;
2061
2062         return WERR_OK;
2063 }
2064
2065 /****************************************************************
2066 ****************************************************************/
2067
2068 static WERROR libnet_join_check_config(TALLOC_CTX *mem_ctx,
2069                                        struct libnet_JoinCtx *r)
2070 {
2071         bool valid_security = false;
2072         bool valid_workgroup = false;
2073         bool valid_realm = false;
2074
2075         /* check if configuration is already set correctly */
2076
2077         valid_workgroup = strequal(lp_workgroup(), r->out.netbios_domain_name);
2078
2079         switch (r->out.domain_is_ad) {
2080                 case false:
2081                         valid_security = (lp_security() == SEC_DOMAIN);
2082                         if (valid_workgroup && valid_security) {
2083                                 /* nothing to be done */
2084                                 return WERR_OK;
2085                         }
2086                         break;
2087                 case true:
2088                         valid_realm = strequal(lp_realm(), r->out.dns_domain_name);
2089                         switch (lp_security()) {
2090                         case SEC_DOMAIN:
2091                         case SEC_ADS:
2092                                 valid_security = true;
2093                         }
2094
2095                         if (valid_workgroup && valid_realm && valid_security) {
2096                                 /* nothing to be done */
2097                                 return WERR_OK;
2098                         }
2099                         break;
2100         }
2101
2102         /* check if we are supposed to manipulate configuration */
2103
2104         if (!r->in.modify_config) {
2105
2106                 char *wrong_conf = talloc_strdup(mem_ctx, "");
2107
2108                 if (!valid_workgroup) {
2109                         wrong_conf = talloc_asprintf_append(wrong_conf,
2110                                 "\"workgroup\" set to '%s', should be '%s'",
2111                                 lp_workgroup(), r->out.netbios_domain_name);
2112                         W_ERROR_HAVE_NO_MEMORY(wrong_conf);
2113                 }
2114
2115                 if (!valid_realm) {
2116                         wrong_conf = talloc_asprintf_append(wrong_conf,
2117                                 "\"realm\" set to '%s', should be '%s'",
2118                                 lp_realm(), r->out.dns_domain_name);
2119                         W_ERROR_HAVE_NO_MEMORY(wrong_conf);
2120                 }
2121
2122                 if (!valid_security) {
2123                         const char *sec = NULL;
2124                         switch (lp_security()) {
2125                         case SEC_USER:  sec = "user"; break;
2126                         case SEC_DOMAIN: sec = "domain"; break;
2127                         case SEC_ADS: sec = "ads"; break;
2128                         }
2129                         wrong_conf = talloc_asprintf_append(wrong_conf,
2130                                 "\"security\" set to '%s', should be %s",
2131                                 sec, r->out.domain_is_ad ?
2132                                 "either 'domain' or 'ads'" : "'domain'");
2133                         W_ERROR_HAVE_NO_MEMORY(wrong_conf);
2134                 }
2135
2136                 libnet_join_set_error_string(mem_ctx, r,
2137                         "Invalid configuration (%s) and configuration modification "
2138                         "was not requested", wrong_conf);
2139                 return WERR_CAN_NOT_COMPLETE;
2140         }
2141
2142         /* check if we are able to manipulate configuration */
2143
2144         if (!lp_config_backend_is_registry()) {
2145                 libnet_join_set_error_string(mem_ctx, r,
2146                         "Configuration manipulation requested but not "
2147                         "supported by backend");
2148                 return WERR_NOT_SUPPORTED;
2149         }
2150
2151         return WERR_OK;
2152 }
2153
2154 /****************************************************************
2155 ****************************************************************/
2156
2157 static WERROR libnet_DomainJoin(TALLOC_CTX *mem_ctx,
2158                                 struct libnet_JoinCtx *r)
2159 {
2160         NTSTATUS status;
2161         WERROR werr;
2162         struct cli_state *cli = NULL;
2163 #ifdef HAVE_ADS
2164         ADS_STATUS ads_status;
2165 #endif /* HAVE_ADS */
2166
2167         if (!r->in.dc_name) {
2168                 struct netr_DsRGetDCNameInfo *info;
2169                 const char *dc;
2170                 status = dsgetdcname(mem_ctx,
2171                                      r->in.msg_ctx,
2172                                      r->in.domain_name,
2173                                      NULL,
2174                                      NULL,
2175                                      DS_FORCE_REDISCOVERY |
2176                                      DS_DIRECTORY_SERVICE_REQUIRED |
2177                                      DS_WRITABLE_REQUIRED |
2178                                      DS_RETURN_DNS_NAME,
2179                                      &info);
2180                 if (!NT_STATUS_IS_OK(status)) {
2181                         libnet_join_set_error_string(mem_ctx, r,
2182                                 "failed to find DC for domain %s",
2183                                 r->in.domain_name,
2184                                 get_friendly_nt_error_msg(status));
2185                         return WERR_DCNOTFOUND;
2186                 }
2187
2188                 dc = strip_hostname(info->dc_unc);
2189                 r->in.dc_name = talloc_strdup(mem_ctx, dc);
2190                 W_ERROR_HAVE_NO_MEMORY(r->in.dc_name);
2191         }
2192
2193         status = libnet_join_lookup_dc_rpc(mem_ctx, r, &cli);
2194         if (!NT_STATUS_IS_OK(status)) {
2195                 libnet_join_set_error_string(mem_ctx, r,
2196                         "failed to lookup DC info for domain '%s' over rpc: %s",
2197                         r->in.domain_name, get_friendly_nt_error_msg(status));
2198                 return ntstatus_to_werror(status);
2199         }
2200
2201         werr = libnet_join_check_config(mem_ctx, r);
2202         if (!W_ERROR_IS_OK(werr)) {
2203                 goto done;
2204         }
2205
2206 #ifdef HAVE_ADS
2207
2208         create_local_private_krb5_conf_for_domain(
2209                 r->out.dns_domain_name, r->out.netbios_domain_name,
2210                 NULL, smbXcli_conn_remote_sockaddr(cli->conn));
2211
2212         if (r->out.domain_is_ad && r->in.account_ou &&
2213             !(r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_UNSECURE)) {
2214
2215                 ads_status = libnet_join_connect_ads(mem_ctx, r);
2216                 if (!ADS_ERR_OK(ads_status)) {
2217                         return WERR_DEFAULT_JOIN_REQUIRED;
2218                 }
2219
2220                 ads_status = libnet_join_precreate_machine_acct(mem_ctx, r);
2221                 if (!ADS_ERR_OK(ads_status)) {
2222                         libnet_join_set_error_string(mem_ctx, r,
2223                                 "failed to precreate account in ou %s: %s",
2224                                 r->in.account_ou,
2225                                 ads_errstr(ads_status));
2226                         return WERR_DEFAULT_JOIN_REQUIRED;
2227                 }
2228
2229                 r->in.join_flags &= ~WKSSVC_JOIN_FLAGS_ACCOUNT_CREATE;
2230         }
2231 #endif /* HAVE_ADS */
2232
2233         if ((r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_UNSECURE) &&
2234             (r->in.join_flags & WKSSVC_JOIN_FLAGS_MACHINE_PWD_PASSED)) {
2235                 status = libnet_join_joindomain_rpc_unsecure(mem_ctx, r, cli);
2236         } else {
2237                 status = libnet_join_joindomain_rpc(mem_ctx, r, cli);
2238         }
2239         if (!NT_STATUS_IS_OK(status)) {
2240                 libnet_join_set_error_string(mem_ctx, r,
2241                         "failed to join domain '%s' over rpc: %s",
2242                         r->in.domain_name, get_friendly_nt_error_msg(status));
2243                 if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
2244                         return WERR_SETUP_ALREADY_JOINED;
2245                 }
2246                 werr = ntstatus_to_werror(status);
2247                 goto done;
2248         }
2249
2250         if (!libnet_join_joindomain_store_secrets(mem_ctx, r)) {
2251                 werr = WERR_SETUP_NOT_JOINED;
2252                 goto done;
2253         }
2254
2255         werr = WERR_OK;
2256
2257  done:
2258         if (cli) {
2259                 cli_shutdown(cli);
2260         }
2261
2262         return werr;
2263 }
2264
2265 /****************************************************************
2266 ****************************************************************/
2267
2268 static WERROR libnet_join_rollback(TALLOC_CTX *mem_ctx,
2269                                    struct libnet_JoinCtx *r)
2270 {
2271         WERROR werr;
2272         struct libnet_UnjoinCtx *u = NULL;
2273
2274         werr = libnet_init_UnjoinCtx(mem_ctx, &u);
2275         if (!W_ERROR_IS_OK(werr)) {
2276                 return werr;
2277         }
2278
2279         u->in.debug             = r->in.debug;
2280         u->in.dc_name           = r->in.dc_name;
2281         u->in.domain_name       = r->in.domain_name;
2282         u->in.admin_account     = r->in.admin_account;
2283         u->in.admin_password    = r->in.admin_password;
2284         u->in.modify_config     = r->in.modify_config;
2285         u->in.use_kerberos      = r->in.use_kerberos;
2286         u->in.unjoin_flags      = WKSSVC_JOIN_FLAGS_JOIN_TYPE |
2287                                   WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE;
2288
2289         werr = libnet_Unjoin(mem_ctx, u);
2290         TALLOC_FREE(u);
2291
2292         return werr;
2293 }
2294
2295 /****************************************************************
2296 ****************************************************************/
2297
2298 WERROR libnet_Join(TALLOC_CTX *mem_ctx,
2299                    struct libnet_JoinCtx *r)
2300 {
2301         WERROR werr;
2302
2303         if (r->in.debug) {
2304                 LIBNET_JOIN_IN_DUMP_CTX(mem_ctx, r);
2305         }
2306
2307         ZERO_STRUCT(r->out);
2308
2309         werr = libnet_join_pre_processing(mem_ctx, r);
2310         if (!W_ERROR_IS_OK(werr)) {
2311                 goto done;
2312         }
2313
2314         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
2315                 werr = libnet_DomainJoin(mem_ctx, r);
2316                 if (!W_ERROR_IS_OK(werr)) {
2317                         goto done;
2318                 }
2319         }
2320
2321         werr = libnet_join_post_processing(mem_ctx, r);
2322         if (!W_ERROR_IS_OK(werr)) {
2323                 goto done;
2324         }
2325
2326         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
2327                 werr = libnet_join_post_verify(mem_ctx, r);
2328                 if (!W_ERROR_IS_OK(werr)) {
2329                         libnet_join_rollback(mem_ctx, r);
2330                 }
2331         }
2332
2333  done:
2334         r->out.result = werr;
2335
2336         if (r->in.debug) {
2337                 LIBNET_JOIN_OUT_DUMP_CTX(mem_ctx, r);
2338         }
2339         return werr;
2340 }
2341
2342 /****************************************************************
2343 ****************************************************************/
2344
2345 static WERROR libnet_DomainUnjoin(TALLOC_CTX *mem_ctx,
2346                                   struct libnet_UnjoinCtx *r)
2347 {
2348         NTSTATUS status;
2349
2350         if (!r->in.domain_sid) {
2351                 struct dom_sid sid;
2352                 if (!secrets_fetch_domain_sid(lp_workgroup(), &sid)) {
2353                         libnet_unjoin_set_error_string(mem_ctx, r,
2354                                 "Unable to fetch domain sid: are we joined?");
2355                         return WERR_SETUP_NOT_JOINED;
2356                 }
2357                 r->in.domain_sid = dom_sid_dup(mem_ctx, &sid);
2358                 W_ERROR_HAVE_NO_MEMORY(r->in.domain_sid);
2359         }
2360
2361         if (!(r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE) &&
2362             !r->in.delete_machine_account) {
2363                 libnet_join_unjoindomain_remove_secrets(mem_ctx, r);
2364                 return WERR_OK;
2365         }
2366
2367         if (!r->in.dc_name) {
2368                 struct netr_DsRGetDCNameInfo *info;
2369                 const char *dc;
2370                 status = dsgetdcname(mem_ctx,
2371                                      r->in.msg_ctx,
2372                                      r->in.domain_name,
2373                                      NULL,
2374                                      NULL,
2375                                      DS_DIRECTORY_SERVICE_REQUIRED |
2376                                      DS_WRITABLE_REQUIRED |
2377                                      DS_RETURN_DNS_NAME,
2378                                      &info);
2379                 if (!NT_STATUS_IS_OK(status)) {
2380                         libnet_unjoin_set_error_string(mem_ctx, r,
2381                                 "failed to find DC for domain %s",
2382                                 r->in.domain_name,
2383                                 get_friendly_nt_error_msg(status));
2384                         return WERR_DCNOTFOUND;
2385                 }
2386
2387                 dc = strip_hostname(info->dc_unc);
2388                 r->in.dc_name = talloc_strdup(mem_ctx, dc);
2389                 W_ERROR_HAVE_NO_MEMORY(r->in.dc_name);
2390         }
2391
2392 #ifdef HAVE_ADS
2393         /* for net ads leave, try to delete the account.  If it works,
2394            no sense in disabling.  If it fails, we can still try to
2395            disable it. jmcd */
2396
2397         if (r->in.delete_machine_account) {
2398                 ADS_STATUS ads_status;
2399                 ads_status = libnet_unjoin_connect_ads(mem_ctx, r);
2400                 if (ADS_ERR_OK(ads_status)) {
2401                         /* dirty hack */
2402                         r->out.dns_domain_name =
2403                                 talloc_strdup(mem_ctx,
2404                                               r->in.ads->server.realm);
2405                         ads_status =
2406                                 libnet_unjoin_remove_machine_acct(mem_ctx, r);
2407                 }
2408                 if (!ADS_ERR_OK(ads_status)) {
2409                         libnet_unjoin_set_error_string(mem_ctx, r,
2410                                 "failed to remove machine account from AD: %s",
2411                                 ads_errstr(ads_status));
2412                 } else {
2413                         r->out.deleted_machine_account = true;
2414                         W_ERROR_HAVE_NO_MEMORY(r->out.dns_domain_name);
2415                         libnet_join_unjoindomain_remove_secrets(mem_ctx, r);
2416                         return WERR_OK;
2417                 }
2418         }
2419 #endif /* HAVE_ADS */
2420
2421         /* The WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE flag really means
2422            "disable".  */
2423         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE) {
2424                 status = libnet_join_unjoindomain_rpc(mem_ctx, r);
2425                 if (!NT_STATUS_IS_OK(status)) {
2426                         libnet_unjoin_set_error_string(mem_ctx, r,
2427                                 "failed to disable machine account via rpc: %s",
2428                                 get_friendly_nt_error_msg(status));
2429                         if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
2430                                 return WERR_SETUP_NOT_JOINED;
2431                         }
2432                         return ntstatus_to_werror(status);
2433                 }
2434
2435                 r->out.disabled_machine_account = true;
2436         }
2437
2438         /* If disable succeeded or was not requested at all, we
2439            should be getting rid of our end of things */
2440
2441         libnet_join_unjoindomain_remove_secrets(mem_ctx, r);
2442
2443         return WERR_OK;
2444 }
2445
2446 /****************************************************************
2447 ****************************************************************/
2448
2449 static WERROR libnet_unjoin_pre_processing(TALLOC_CTX *mem_ctx,
2450                                            struct libnet_UnjoinCtx *r)
2451 {
2452         if (!r->in.domain_name) {
2453                 libnet_unjoin_set_error_string(mem_ctx, r,
2454                         "No domain name defined");
2455                 return WERR_INVALID_PARAM;
2456         }
2457
2458         if (!libnet_parse_domain_dc(mem_ctx, r->in.domain_name,
2459                                     &r->in.domain_name,
2460                                     &r->in.dc_name)) {
2461                 libnet_unjoin_set_error_string(mem_ctx, r,
2462                         "Failed to parse domain name");
2463                 return WERR_INVALID_PARAM;
2464         }
2465
2466         if (IS_DC) {
2467                 return WERR_SETUP_DOMAIN_CONTROLLER;
2468         }
2469
2470         if (!r->in.admin_domain) {
2471                 char *admin_domain = NULL;
2472                 char *admin_account = NULL;
2473                 split_domain_user(mem_ctx,
2474                                   r->in.admin_account,
2475                                   &admin_domain,
2476                                   &admin_account);
2477                 r->in.admin_domain = admin_domain;
2478                 r->in.admin_account = admin_account;
2479         }
2480
2481         if (!secrets_init()) {
2482                 libnet_unjoin_set_error_string(mem_ctx, r,
2483                         "Unable to open secrets database");
2484                 return WERR_CAN_NOT_COMPLETE;
2485         }
2486
2487         return WERR_OK;
2488 }
2489
2490 /****************************************************************
2491 ****************************************************************/
2492
2493 static WERROR libnet_unjoin_post_processing(TALLOC_CTX *mem_ctx,
2494                                             struct libnet_UnjoinCtx *r)
2495 {
2496         saf_delete(r->out.netbios_domain_name);
2497         saf_delete(r->out.dns_domain_name);
2498
2499         return libnet_unjoin_config(r);
2500 }
2501
2502 /****************************************************************
2503 ****************************************************************/
2504
2505 WERROR libnet_Unjoin(TALLOC_CTX *mem_ctx,
2506                      struct libnet_UnjoinCtx *r)
2507 {
2508         WERROR werr;
2509
2510         if (r->in.debug) {
2511                 LIBNET_UNJOIN_IN_DUMP_CTX(mem_ctx, r);
2512         }
2513
2514         werr = libnet_unjoin_pre_processing(mem_ctx, r);
2515         if (!W_ERROR_IS_OK(werr)) {
2516                 goto done;
2517         }
2518
2519         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
2520                 werr = libnet_DomainUnjoin(mem_ctx, r);
2521                 if (!W_ERROR_IS_OK(werr)) {
2522                         libnet_unjoin_config(r);
2523                         goto done;
2524                 }
2525         }
2526
2527         werr = libnet_unjoin_post_processing(mem_ctx, r);
2528         if (!W_ERROR_IS_OK(werr)) {
2529                 goto done;
2530         }
2531
2532  done:
2533         r->out.result = werr;
2534
2535         if (r->in.debug) {
2536                 LIBNET_UNJOIN_OUT_DUMP_CTX(mem_ctx, r);
2537         }
2538
2539         return werr;
2540 }