source3/rpc_server/netlogon/srv_netlog_nt.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  RPC Pipe client / server routines
   4  *  Copyright (C) Andrew Tridgell              1992-1997,
   5  *  Copyright (C) Luke Kenneth Casson Leighton 1996-1997,
   6  *  Copyright (C) Paul Ashton                       1997.
   7  *  Copyright (C) Jeremy Allison               1998-2001.
   8  *  Copyright (C) Andrew Bartlett                   2001.
   9  *  Copyright (C) Guenther Deschner                 2008-2009.
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 3 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *  GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License
  22  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 /* This is the implementation of the netlogon pipe. */
  26
  27 #include "includes.h"
  28 #include "system/passwd.h" /* uid_wrapper */
  29 #include "ntdomain.h"
  30 #include "../libcli/auth/schannel.h"
  31 #include "../librpc/gen_ndr/srv_netlogon.h"
  32 #include "../librpc/gen_ndr/ndr_samr_c.h"
  33 #include "../librpc/gen_ndr/ndr_lsa_c.h"
  34 #include "rpc_client/cli_lsarpc.h"
  35 #include "rpc_client/init_lsa.h"
  36 #include "rpc_server/rpc_ncacn_np.h"
  37 #include "../libcli/security/security.h"
  38 #include "../libcli/security/dom_sid.h"
  39 #include "librpc/gen_ndr/ndr_drsblobs.h"
  40 #include "lib/crypto/arcfour.h"
  41 #include "lib/crypto/md4.h"
  42 #include "nsswitch/libwbclient/wbclient.h"
  43 #include "../libcli/registry/util_reg.h"
  44 #include "passdb.h"
  45 #include "auth.h"
  46 #include "messages.h"
  47 #include "../lib/tsocket/tsocket.h"
  48 #include "lib/param/param.h"
  49
  50 extern userdom_struct current_user_info;
  51
  52 #undef DBGC_CLASS
  53 #define DBGC_CLASS DBGC_RPC_SRV
  54
  55 struct netlogon_server_pipe_state {
  56         struct netr_Credential client_challenge;
  57         struct netr_Credential server_challenge;
  58 };
  59
  60 /*************************************************************************
  61  _netr_LogonControl
  62  *************************************************************************/
  63
  64 WERROR _netr_LogonControl(struct pipes_struct *p,
  65                           struct netr_LogonControl *r)
  66 {
  67         struct netr_LogonControl2Ex l;
  68
  69         switch (r->in.level) {
  70         case 1:
  71                 break;
  72         case 2:
  73                 return WERR_NOT_SUPPORTED;
  74         default:
  75                 return WERR_UNKNOWN_LEVEL;
  76         }
  77
  78         l.in.logon_server       = r->in.logon_server;
  79         l.in.function_code      = r->in.function_code;
  80         l.in.level              = r->in.level;
  81         l.in.data               = NULL;
  82         l.out.query             = r->out.query;
  83
  84         return _netr_LogonControl2Ex(p, &l);
  85 }
  86
  87 /*************************************************************************
  88  _netr_LogonControl2
  89  *************************************************************************/
  90
  91 WERROR _netr_LogonControl2(struct pipes_struct *p,
  92                            struct netr_LogonControl2 *r)
  93 {
  94         struct netr_LogonControl2Ex l;
  95
  96         l.in.logon_server       = r->in.logon_server;
  97         l.in.function_code      = r->in.function_code;
  98         l.in.level              = r->in.level;
  99         l.in.data               = r->in.data;
 100         l.out.query             = r->out.query;
 101
 102         return _netr_LogonControl2Ex(p, &l);
 103 }
 104
 105 /*************************************************************************
 106  *************************************************************************/
 107
 108 static bool wb_change_trust_creds(const char *domain, WERROR *tc_status)
 109 {
 110         wbcErr result;
 111         struct wbcAuthErrorInfo *error = NULL;
 112
 113         result = wbcChangeTrustCredentials(domain, &error);
 114         switch (result) {
 115         case WBC_ERR_WINBIND_NOT_AVAILABLE:
 116                 return false;
 117         case WBC_ERR_DOMAIN_NOT_FOUND:
 118                 *tc_status = WERR_NO_SUCH_DOMAIN;
 119                 return true;
 120         case WBC_ERR_SUCCESS:
 121                 *tc_status = WERR_OK;
 122                 return true;
 123         default:
 124                 break;
 125         }
 126
 127         if (error && error->nt_status != 0) {
 128                 *tc_status = ntstatus_to_werror(NT_STATUS(error->nt_status));
 129         } else {
 130                 *tc_status = WERR_TRUST_FAILURE;
 131         }
 132         wbcFreeMemory(error);
 133         return true;
 134 }
 135
 136 /*************************************************************************
 137  *************************************************************************/
 138
 139 static bool wb_check_trust_creds(const char *domain, WERROR *tc_status)
 140 {
 141         wbcErr result;
 142         struct wbcAuthErrorInfo *error = NULL;
 143
 144         result = wbcCheckTrustCredentials(domain, &error);
 145         switch (result) {
 146         case WBC_ERR_WINBIND_NOT_AVAILABLE:
 147                 return false;
 148         case WBC_ERR_DOMAIN_NOT_FOUND:
 149                 *tc_status = WERR_NO_SUCH_DOMAIN;
 150                 return true;
 151         case WBC_ERR_SUCCESS:
 152                 *tc_status = WERR_OK;
 153                 return true;
 154         default:
 155                 break;
 156         }
 157
 158         if (error && error->nt_status != 0) {
 159                 *tc_status = ntstatus_to_werror(NT_STATUS(error->nt_status));
 160         } else {
 161                 *tc_status = WERR_TRUST_FAILURE;
 162         }
 163         wbcFreeMemory(error);
 164         return true;
 165 }
 166
 167 /****************************************************************
 168  _netr_LogonControl2Ex
 169 ****************************************************************/
 170
 171 WERROR _netr_LogonControl2Ex(struct pipes_struct *p,
 172                              struct netr_LogonControl2Ex *r)
 173 {
 174         uint32_t flags = 0x0;
 175         WERROR pdc_connection_status = WERR_OK;
 176         uint32_t logon_attempts = 0x0;
 177         WERROR tc_status;
 178         fstring dc_name2;
 179         const char *dc_name = NULL;
 180         struct sockaddr_storage dc_ss;
 181         const char *domain = NULL;
 182         struct netr_NETLOGON_INFO_1 *info1;
 183         struct netr_NETLOGON_INFO_2 *info2;
 184         struct netr_NETLOGON_INFO_3 *info3;
 185         struct netr_NETLOGON_INFO_4 *info4;
 186         const char *fn;
 187         uint32_t acct_ctrl;
 188         NTSTATUS status;
 189         struct netr_DsRGetDCNameInfo *dc_info;
 190
 191         switch (p->opnum) {
 192         case NDR_NETR_LOGONCONTROL:
 193                 fn = "_netr_LogonControl";
 194                 break;
 195         case NDR_NETR_LOGONCONTROL2:
 196                 fn = "_netr_LogonControl2";
 197                 break;
 198         case NDR_NETR_LOGONCONTROL2EX:
 199                 fn = "_netr_LogonControl2Ex";
 200                 break;
 201         default:
 202                 return WERR_INVALID_PARAM;
 203         }
 204
 205         acct_ctrl = p->session_info->info->acct_flags;
 206
 207         switch (r->in.function_code) {
 208         case NETLOGON_CONTROL_TC_VERIFY:
 209         case NETLOGON_CONTROL_CHANGE_PASSWORD:
 210         case NETLOGON_CONTROL_REDISCOVER:
 211                 if ((geteuid() != sec_initial_uid()) &&
 212                     !nt_token_check_domain_rid(p->session_info->security_token, DOMAIN_RID_ADMINS) &&
 213                     !nt_token_check_sid(&global_sid_Builtin_Administrators, p->session_info->security_token) &&
 214                     !(acct_ctrl & (ACB_WSTRUST | ACB_SVRTRUST))) {
 215                         return WERR_ACCESS_DENIED;
 216                 }
 217                 break;
 218         default:
 219                 break;
 220         }
 221
 222         tc_status = WERR_NO_SUCH_DOMAIN;
 223
 224         switch (r->in.function_code) {
 225         case NETLOGON_CONTROL_QUERY:
 226                 tc_status = WERR_OK;
 227                 break;
 228         case NETLOGON_CONTROL_REPLICATE:
 229         case NETLOGON_CONTROL_SYNCHRONIZE:
 230         case NETLOGON_CONTROL_PDC_REPLICATE:
 231         case NETLOGON_CONTROL_BACKUP_CHANGE_LOG:
 232         case NETLOGON_CONTROL_BREAKPOINT:
 233                 if (acct_ctrl & ACB_NORMAL) {
 234                         return WERR_NOT_SUPPORTED;
 235                 } else if (acct_ctrl & (ACB_WSTRUST | ACB_SVRTRUST)) {
 236                         return WERR_ACCESS_DENIED;
 237                 } else {
 238                         return WERR_ACCESS_DENIED;
 239                 }
 240         case NETLOGON_CONTROL_TRUNCATE_LOG:
 241                 if (acct_ctrl & ACB_NORMAL) {
 242                         break;
 243                 } else if (acct_ctrl & (ACB_WSTRUST | ACB_SVRTRUST)) {
 244                         return WERR_ACCESS_DENIED;
 245                 } else {
 246                         return WERR_ACCESS_DENIED;
 247                 }
 248
 249         case NETLOGON_CONTROL_TRANSPORT_NOTIFY:
 250         case NETLOGON_CONTROL_FORCE_DNS_REG:
 251         case NETLOGON_CONTROL_QUERY_DNS_REG:
 252                 return WERR_NOT_SUPPORTED;
 253         case NETLOGON_CONTROL_FIND_USER:
 254                 if (!r->in.data || !r->in.data->user) {
 255                         return WERR_NOT_SUPPORTED;
 256                 }
 257                 break;
 258         case NETLOGON_CONTROL_SET_DBFLAG:
 259                 if (!r->in.data) {
 260                         return WERR_NOT_SUPPORTED;
 261                 }
 262                 break;
 263         case NETLOGON_CONTROL_TC_VERIFY:
 264                 if (!r->in.data || !r->in.data->domain) {
 265                         return WERR_NOT_SUPPORTED;
 266                 }
 267
 268                 if (!wb_check_trust_creds(r->in.data->domain, &tc_status)) {
 269                         return WERR_NOT_SUPPORTED;
 270                 }
 271                 break;
 272         case NETLOGON_CONTROL_TC_QUERY:
 273                 if (!r->in.data || !r->in.data->domain) {
 274                         return WERR_NOT_SUPPORTED;
 275                 }
 276
 277                 domain = r->in.data->domain;
 278
 279                 if (!is_trusted_domain(domain)) {
 280                         break;
 281                 }
 282
 283                 if (!get_dc_name(domain, NULL, dc_name2, &dc_ss)) {
 284                         tc_status = WERR_NO_LOGON_SERVERS;
 285                         break;
 286                 }
 287
 288                 dc_name = talloc_asprintf(p->mem_ctx, "\\\\%s", dc_name2);
 289                 if (!dc_name) {
 290                         return WERR_NOMEM;
 291                 }
 292
 293                 tc_status = WERR_OK;
 294
 295                 break;
 296
 297         case NETLOGON_CONTROL_REDISCOVER:
 298                 if (!r->in.data || !r->in.data->domain) {
 299                         return WERR_NOT_SUPPORTED;
 300                 }
 301
 302                 domain = r->in.data->domain;
 303
 304                 if (!is_trusted_domain(domain)) {
 305                         break;
 306                 }
 307
 308                 status = dsgetdcname(p->mem_ctx, p->msg_ctx, domain, NULL, NULL,
 309                                      DS_FORCE_REDISCOVERY | DS_RETURN_FLAT_NAME,
 310                                      &dc_info);
 311                 if (!NT_STATUS_IS_OK(status)) {
 312                         tc_status = WERR_NO_LOGON_SERVERS;
 313                         break;
 314                 }
 315
 316                 dc_name = talloc_asprintf(p->mem_ctx, "\\\\%s", dc_info->dc_unc);
 317                 if (!dc_name) {
 318                         return WERR_NOMEM;
 319                 }
 320
 321                 tc_status = WERR_OK;
 322
 323                 break;
 324
 325         case NETLOGON_CONTROL_CHANGE_PASSWORD:
 326                 if (!r->in.data || !r->in.data->domain) {
 327                         return WERR_NOT_SUPPORTED;
 328                 }
 329
 330                 if (!wb_change_trust_creds(r->in.data->domain, &tc_status)) {
 331                         return WERR_NOT_SUPPORTED;
 332                 }
 333                 break;
 334
 335         default:
 336                 /* no idea what this should be */
 337                 DEBUG(0,("%s: unimplemented function level [%d]\n",
 338                         fn, r->in.function_code));
 339                 return WERR_UNKNOWN_LEVEL;
 340         }
 341
 342         /* prepare the response */
 343
 344         switch (r->in.level) {
 345         case 1:
 346                 info1 = talloc_zero(p->mem_ctx, struct netr_NETLOGON_INFO_1);
 347                 W_ERROR_HAVE_NO_MEMORY(info1);
 348
 349                 info1->flags                    = flags;
 350                 info1->pdc_connection_status    = pdc_connection_status;
 351
 352                 r->out.query->info1 = info1;
 353                 break;
 354         case 2:
 355                 info2 = talloc_zero(p->mem_ctx, struct netr_NETLOGON_INFO_2);
 356                 W_ERROR_HAVE_NO_MEMORY(info2);
 357
 358                 info2->flags                    = flags;
 359                 info2->pdc_connection_status    = pdc_connection_status;
 360                 info2->trusted_dc_name          = dc_name;
 361                 info2->tc_connection_status     = tc_status;
 362
 363                 r->out.query->info2 = info2;
 364                 break;
 365         case 3:
 366                 info3 = talloc_zero(p->mem_ctx, struct netr_NETLOGON_INFO_3);
 367                 W_ERROR_HAVE_NO_MEMORY(info3);
 368
 369                 info3->flags                    = flags;
 370                 info3->logon_attempts           = logon_attempts;
 371
 372                 r->out.query->info3 = info3;
 373                 break;
 374         case 4:
 375                 info4 = talloc_zero(p->mem_ctx, struct netr_NETLOGON_INFO_4);
 376                 W_ERROR_HAVE_NO_MEMORY(info4);
 377
 378                 info4->trusted_dc_name          = dc_name;
 379                 info4->trusted_domain_name      = r->in.data->domain;
 380
 381                 r->out.query->info4 = info4;
 382                 break;
 383         default:
 384                 return WERR_UNKNOWN_LEVEL;
 385         }
 386
 387         return WERR_OK;
 388 }
 389
 390 /*************************************************************************
 391  _netr_NetrEnumerateTrustedDomains
 392  *************************************************************************/
 393
 394 NTSTATUS _netr_NetrEnumerateTrustedDomains(struct pipes_struct *p,
 395                                            struct netr_NetrEnumerateTrustedDomains *r)
 396 {
 397         NTSTATUS status;
 398         NTSTATUS result = NT_STATUS_OK;
 399         DATA_BLOB blob;
 400         int num_domains = 0;
 401         const char **trusted_domains = NULL;
 402         struct lsa_DomainList domain_list;
 403         struct dcerpc_binding_handle *h = NULL;
 404         struct policy_handle pol;
 405         uint32_t enum_ctx = 0;
 406         int i;
 407         uint32_t max_size = (uint32_t)-1;
 408
 409         DEBUG(6,("_netr_NetrEnumerateTrustedDomains: %d\n", __LINE__));
 410
 411         status = rpcint_binding_handle(p->mem_ctx,
 412                                        &ndr_table_lsarpc,
 413                                        p->remote_address,
 414                                        p->session_info,
 415                                        p->msg_ctx,
 416                                        &h);
 417         if (!NT_STATUS_IS_OK(status)) {
 418                 return status;
 419         }
 420
 421         status = dcerpc_lsa_open_policy2(h,
 422                                          p->mem_ctx,
 423                                          NULL,
 424                                          true,
 425                                          LSA_POLICY_VIEW_LOCAL_INFORMATION,
 426                                          &pol,
 427                                          &result);
 428         if (!NT_STATUS_IS_OK(status)) {
 429                 goto out;
 430         }
 431         if (!NT_STATUS_IS_OK(result)) {
 432                 status = result;
 433                 goto out;
 434         }
 435
 436         do {
 437                 /* Lookup list of trusted domains */
 438                 status = dcerpc_lsa_EnumTrustDom(h,
 439                                                  p->mem_ctx,
 440                                                  &pol,
 441                                                  &enum_ctx,
 442                                                  &domain_list,
 443                                                  max_size,
 444                                                  &result);
 445                 if (!NT_STATUS_IS_OK(status)) {
 446                         goto out;
 447                 }
 448                 if (!NT_STATUS_IS_OK(result) &&
 449                     !NT_STATUS_EQUAL(result, NT_STATUS_NO_MORE_ENTRIES) &&
 450                     !NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES)) {
 451                         status = result;
 452                         goto out;
 453                 }
 454
 455                 for (i = 0; i < domain_list.count; i++) {
 456                         if (!add_string_to_array(p->mem_ctx, domain_list.domains[i].name.string,
 457                                                  &trusted_domains, &num_domains)) {
 458                                 status = NT_STATUS_NO_MEMORY;
 459                                 goto out;
 460                         }
 461                 }
 462         } while (NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES));
 463
 464         if (num_domains > 0) {
 465                 /* multi sz terminate */
 466                 trusted_domains = talloc_realloc(p->mem_ctx, trusted_domains, const char *, num_domains + 1);
 467                 if (trusted_domains == NULL) {
 468                         status = NT_STATUS_NO_MEMORY;
 469                         goto out;
 470                 }
 471
 472                 trusted_domains[num_domains] = NULL;
 473         }
 474
 475         if (!push_reg_multi_sz(trusted_domains, &blob, trusted_domains)) {
 476                 TALLOC_FREE(trusted_domains);
 477                 status = NT_STATUS_NO_MEMORY;
 478                 goto out;
 479         }
 480
 481         r->out.trusted_domains_blob->data = blob.data;
 482         r->out.trusted_domains_blob->length = blob.length;
 483
 484         DEBUG(6,("_netr_NetrEnumerateTrustedDomains: %d\n", __LINE__));
 485
 486         status = NT_STATUS_OK;
 487
 488  out:
 489         if (is_valid_policy_hnd(&pol)) {
 490                 dcerpc_lsa_Close(h, p->mem_ctx, &pol, &result);
 491         }
 492
 493         return status;
 494 }
 495
 496 /*************************************************************************
 497  *************************************************************************/
 498
 499 static NTSTATUS samr_find_machine_account(TALLOC_CTX *mem_ctx,
 500                                           struct dcerpc_binding_handle *b,
 501                                           const char *account_name,
 502                                           uint32_t access_mask,
 503                                           struct dom_sid2 **domain_sid_p,
 504                                           uint32_t *user_rid_p,
 505                                           struct policy_handle *user_handle)
 506 {
 507         NTSTATUS status;
 508         NTSTATUS result = NT_STATUS_OK;
 509         struct policy_handle connect_handle;
 510         struct policy_handle domain_handle = { 0, };
 511         struct lsa_String domain_name;
 512         struct dom_sid2 *domain_sid;
 513         struct lsa_String names;
 514         struct samr_Ids rids;
 515         struct samr_Ids types;
 516         uint32_t rid;
 517
 518         status = dcerpc_samr_Connect2(b, mem_ctx,
 519                                       lp_netbios_name(),
 520                                       SAMR_ACCESS_CONNECT_TO_SERVER |
 521                                       SAMR_ACCESS_ENUM_DOMAINS |
 522                                       SAMR_ACCESS_LOOKUP_DOMAIN,
 523                                       &connect_handle,
 524                                       &result);
 525         if (!NT_STATUS_IS_OK(status)) {
 526                 goto out;
 527         }
 528         if (!NT_STATUS_IS_OK(result)) {
 529                 status = result;
 530                 goto out;
 531         }
 532
 533         init_lsa_String(&domain_name, get_global_sam_name());
 534
 535         status = dcerpc_samr_LookupDomain(b, mem_ctx,
 536                                           &connect_handle,
 537                                           &domain_name,
 538                                           &domain_sid,
 539                                           &result);
 540         if (!NT_STATUS_IS_OK(status)) {
 541                 goto out;
 542         }
 543         if (!NT_STATUS_IS_OK(result)) {
 544                 status = result;
 545                 goto out;
 546         }
 547
 548         status = dcerpc_samr_OpenDomain(b, mem_ctx,
 549                                         &connect_handle,
 550                                         SAMR_DOMAIN_ACCESS_OPEN_ACCOUNT,
 551                                         domain_sid,
 552                                         &domain_handle,
 553                                         &result);
 554         if (!NT_STATUS_IS_OK(status)) {
 555                 goto out;
 556         }
 557         if (!NT_STATUS_IS_OK(result)) {
 558                 status = result;
 559                 goto out;
 560         }
 561
 562         init_lsa_String(&names, account_name);
 563
 564         status = dcerpc_samr_LookupNames(b, mem_ctx,
 565                                          &domain_handle,
 566                                          1,
 567                                          &names,
 568                                          &rids,
 569                                          &types,
 570                                          &result);
 571         if (!NT_STATUS_IS_OK(status)) {
 572                 goto out;
 573         }
 574         if (!NT_STATUS_IS_OK(result)) {
 575                 status = result;
 576                 goto out;
 577         }
 578
 579         if (rids.count != 1) {
 580                 status = NT_STATUS_NO_SUCH_USER;
 581                 goto out;
 582         }
 583         if (rids.count != types.count) {
 584                 status = NT_STATUS_INVALID_PARAMETER;
 585                 goto out;
 586         }
 587         if (types.ids[0] != SID_NAME_USER) {
 588                 status = NT_STATUS_NO_SUCH_USER;
 589                 goto out;
 590         }
 591
 592         rid = rids.ids[0];
 593
 594         status = dcerpc_samr_OpenUser(b, mem_ctx,
 595                                       &domain_handle,
 596                                       access_mask,
 597                                       rid,
 598                                       user_handle,
 599                                       &result);
 600         if (!NT_STATUS_IS_OK(status)) {
 601                 goto out;
 602         }
 603         if (!NT_STATUS_IS_OK(result)) {
 604                 status = result;
 605                 goto out;
 606         }
 607
 608         if (user_rid_p) {
 609                 *user_rid_p = rid;
 610         }
 611
 612         if (domain_sid_p) {
 613                 *domain_sid_p = domain_sid;
 614         }
 615
 616  out:
 617         if (is_valid_policy_hnd(&domain_handle)) {
 618                 dcerpc_samr_Close(b, mem_ctx, &domain_handle, &result);
 619         }
 620         if (is_valid_policy_hnd(&connect_handle)) {
 621                 dcerpc_samr_Close(b, mem_ctx, &connect_handle, &result);
 622         }
 623
 624         return status;
 625 }
 626
 627 /******************************************************************
 628  gets a machine password entry.  checks access rights of the host.
 629  ******************************************************************/
 630
 631 static NTSTATUS get_md4pw(struct samr_Password *md4pw, const char *mach_acct,
 632                           enum netr_SchannelType sec_chan_type,
 633                           struct dom_sid *sid,
 634                           struct messaging_context *msg_ctx)
 635 {
 636         NTSTATUS status;
 637         NTSTATUS result = NT_STATUS_OK;
 638         TALLOC_CTX *mem_ctx;
 639         struct dcerpc_binding_handle *h = NULL;
 640         struct tsocket_address *local;
 641         struct policy_handle user_handle;
 642         uint32_t user_rid;
 643         struct dom_sid *domain_sid;
 644         uint32_t acct_ctrl;
 645         union samr_UserInfo *info;
 646         struct auth_session_info *session_info;
 647         int rc;
 648
 649 #if 0
 650
 651     /*
 652      * Currently this code is redundent as we already have a filter
 653      * by hostname list. What this code really needs to do is to
 654      * get a hosts allowed/hosts denied list from the SAM database
 655      * on a per user basis, and make the access decision there.
 656      * I will leave this code here for now as a reminder to implement
 657      * this at a later date. JRA.
 658      */
 659
 660         if (!allow_access(lp_domain_hostsdeny(), lp_domain_hostsallow(),
 661                           p->client_id.name,
 662                           p->client_id.addr)) {
 663                 DEBUG(0,("get_md4pw: Workstation %s denied access to domain\n", mach_acct));
 664                 return False;
 665         }
 666 #endif /* 0 */
 667
 668         mem_ctx = talloc_stackframe();
 669         if (mem_ctx == NULL) {
 670                 status = NT_STATUS_NO_MEMORY;
 671                 goto out;
 672         }
 673
 674         status = make_session_info_system(mem_ctx, &session_info);
 675         if (!NT_STATUS_IS_OK(status)) {
 676                 goto out;
 677         }
 678
 679         ZERO_STRUCT(user_handle);
 680
 681         rc = tsocket_address_inet_from_strings(mem_ctx,
 682                                                "ip",
 683                                                "127.0.0.1",
 684                                                0,
 685                                                &local);
 686         if (rc < 0) {
 687                 status = NT_STATUS_NO_MEMORY;
 688                 goto out;
 689         }
 690
 691         status = rpcint_binding_handle(mem_ctx,
 692                                        &ndr_table_samr,
 693                                        local,
 694                                        session_info,
 695                                        msg_ctx,
 696                                        &h);
 697         if (!NT_STATUS_IS_OK(status)) {
 698                 goto out;
 699         }
 700
 701         become_root();
 702         status = samr_find_machine_account(mem_ctx, h, mach_acct,
 703                                            SEC_FLAG_MAXIMUM_ALLOWED,
 704                                            &domain_sid, &user_rid,
 705                                            &user_handle);
 706         unbecome_root();
 707         if (!NT_STATUS_IS_OK(status)) {
 708                 goto out;
 709         }
 710
 711         status = dcerpc_samr_QueryUserInfo2(h,
 712                                             mem_ctx,
 713                                             &user_handle,
 714                                             UserControlInformation,
 715                                             &info,
 716                                             &result);
 717         if (!NT_STATUS_IS_OK(status)) {
 718                 goto out;
 719         }
 720         if (!NT_STATUS_IS_OK(result)) {
 721                 status = result;
 722                 goto out;
 723         }
 724
 725         acct_ctrl = info->info16.acct_flags;
 726
 727         if (acct_ctrl & ACB_DISABLED) {
 728                 DEBUG(0,("get_md4pw: Workstation %s: account is disabled\n", mach_acct));
 729                 status = NT_STATUS_ACCOUNT_DISABLED;
 730                 goto out;
 731         }
 732
 733         if (!(acct_ctrl & ACB_SVRTRUST) &&
 734             !(acct_ctrl & ACB_WSTRUST) &&
 735             !(acct_ctrl & ACB_DOMTRUST))
 736         {
 737                 DEBUG(0,("get_md4pw: Workstation %s: account is not a trust account\n", mach_acct));
 738                 status = NT_STATUS_NO_TRUST_SAM_ACCOUNT;
 739                 goto out;
 740         }
 741
 742         switch (sec_chan_type) {
 743                 case SEC_CHAN_BDC:
 744                         if (!(acct_ctrl & ACB_SVRTRUST)) {
 745                                 DEBUG(0,("get_md4pw: Workstation %s: BDC secure channel requested "
 746                                          "but not a server trust account\n", mach_acct));
 747                                 status = NT_STATUS_NO_TRUST_SAM_ACCOUNT;
 748                                 goto out;
 749                         }
 750                         break;
 751                 case SEC_CHAN_WKSTA:
 752                         if (!(acct_ctrl & ACB_WSTRUST)) {
 753                                 DEBUG(0,("get_md4pw: Workstation %s: WORKSTATION secure channel requested "
 754                                          "but not a workstation trust account\n", mach_acct));
 755                                 status = NT_STATUS_NO_TRUST_SAM_ACCOUNT;
 756                                 goto out;
 757                         }
 758                         break;
 759                 case SEC_CHAN_DOMAIN:
 760                         if (!(acct_ctrl & ACB_DOMTRUST)) {
 761                                 DEBUG(0,("get_md4pw: Workstation %s: DOMAIN secure channel requested "
 762                                          "but not a interdomain trust account\n", mach_acct));
 763                                 status = NT_STATUS_NO_TRUST_SAM_ACCOUNT;
 764                                 goto out;
 765                         }
 766                         break;
 767                 default:
 768                         break;
 769         }
 770
 771         become_root();
 772         status = dcerpc_samr_QueryUserInfo2(h,
 773                                             mem_ctx,
 774                                             &user_handle,
 775                                             UserInternal1Information,
 776                                             &info,
 777                                             &result);
 778         unbecome_root();
 779         if (!NT_STATUS_IS_OK(status)) {
 780                 goto out;
 781         }
 782         if (!NT_STATUS_IS_OK(result)) {
 783                 status = result;
 784                 goto out;
 785         }
 786
 787         if (info->info18.nt_pwd_active == 0) {
 788                 DEBUG(0,("get_md4pw: Workstation %s: account does not have a password\n", mach_acct));
 789                 status = NT_STATUS_LOGON_FAILURE;
 790                 goto out;
 791         }
 792
 793         /* samr gives out nthash unencrypted (!) */
 794         memcpy(md4pw->hash, info->info18.nt_pwd.hash, 16);
 795
 796         sid_compose(sid, domain_sid, user_rid);
 797
 798  out:
 799         if (h && is_valid_policy_hnd(&user_handle)) {
 800                 dcerpc_samr_Close(h, mem_ctx, &user_handle, &result);
 801         }
 802
 803         talloc_free(mem_ctx);
 804
 805         return status;
 806 }
 807
 808 /*************************************************************************
 809  _netr_ServerReqChallenge
 810  *************************************************************************/
 811
 812 NTSTATUS _netr_ServerReqChallenge(struct pipes_struct *p,
 813                                   struct netr_ServerReqChallenge *r)
 814 {
 815         struct netlogon_server_pipe_state *pipe_state =
 816                 talloc_get_type(p->private_data, struct netlogon_server_pipe_state);
 817
 818         if (pipe_state) {
 819                 DEBUG(10,("_netr_ServerReqChallenge: new challenge requested. Clearing old state.\n"));
 820                 talloc_free(pipe_state);
 821                 p->private_data = NULL;
 822         }
 823
 824         pipe_state = talloc(p, struct netlogon_server_pipe_state);
 825         NT_STATUS_HAVE_NO_MEMORY(pipe_state);
 826
 827         pipe_state->client_challenge = *r->in.credentials;
 828
 829         generate_random_buffer(pipe_state->server_challenge.data,
 830                                sizeof(pipe_state->server_challenge.data));
 831
 832         *r->out.return_credentials = pipe_state->server_challenge;
 833
 834         p->private_data = pipe_state;
 835
 836         return NT_STATUS_OK;
 837 }
 838
 839 /*************************************************************************
 840  _netr_ServerAuthenticate
 841  Create the initial credentials.
 842  *************************************************************************/
 843
 844 NTSTATUS _netr_ServerAuthenticate(struct pipes_struct *p,
 845                                   struct netr_ServerAuthenticate *r)
 846 {
 847         struct netr_ServerAuthenticate3 a;
 848         uint32_t negotiate_flags = 0;
 849         uint32_t rid;
 850
 851         a.in.server_name                = r->in.server_name;
 852         a.in.account_name               = r->in.account_name;
 853         a.in.secure_channel_type        = r->in.secure_channel_type;
 854         a.in.computer_name              = r->in.computer_name;
 855         a.in.credentials                = r->in.credentials;
 856         a.in.negotiate_flags            = &negotiate_flags;
 857
 858         a.out.return_credentials        = r->out.return_credentials;
 859         a.out.rid                       = &rid;
 860         a.out.negotiate_flags           = &negotiate_flags;
 861
 862         return _netr_ServerAuthenticate3(p, &a);
 863
 864 }
 865
 866 /*************************************************************************
 867  _netr_ServerAuthenticate3
 868  *************************************************************************/
 869
 870 NTSTATUS _netr_ServerAuthenticate3(struct pipes_struct *p,
 871                                    struct netr_ServerAuthenticate3 *r)
 872 {
 873         NTSTATUS status;
 874         uint32_t srv_flgs;
 875         /* r->in.negotiate_flags is an aliased pointer to r->out.negotiate_flags,
 876          * so use a copy to avoid destroying the client values. */
 877         uint32_t in_neg_flags = *r->in.negotiate_flags;
 878         const char *fn;
 879         struct loadparm_context *lp_ctx;
 880         struct dom_sid sid;
 881         struct samr_Password mach_pwd;
 882         struct netlogon_creds_CredentialState *creds;
 883         struct netlogon_server_pipe_state *pipe_state =
 884                 talloc_get_type(p->private_data, struct netlogon_server_pipe_state);
 885
 886         /* According to Microsoft (see bugid #6099)
 887          * Windows 7 looks at the negotiate_flags
 888          * returned in this structure *even if the
 889          * call fails with access denied* ! So in order
 890          * to allow Win7 to connect to a Samba NT style
 891          * PDC we set the flags before we know if it's
 892          * an error or not.
 893          */
 894
 895         /* 0x000001ff */
 896         srv_flgs = NETLOGON_NEG_ACCOUNT_LOCKOUT |
 897                    NETLOGON_NEG_PERSISTENT_SAMREPL |
 898                    NETLOGON_NEG_ARCFOUR |
 899                    NETLOGON_NEG_PROMOTION_COUNT |
 900                    NETLOGON_NEG_CHANGELOG_BDC |
 901                    NETLOGON_NEG_FULL_SYNC_REPL |
 902                    NETLOGON_NEG_MULTIPLE_SIDS |
 903                    NETLOGON_NEG_REDO |
 904                    NETLOGON_NEG_PASSWORD_CHANGE_REFUSAL |
 905                    NETLOGON_NEG_PASSWORD_SET2;
 906
 907         /* Ensure we support strong (128-bit) keys. */
 908         if (in_neg_flags & NETLOGON_NEG_STRONG_KEYS) {
 909                 srv_flgs |= NETLOGON_NEG_STRONG_KEYS;
 910         }
 911
 912         if (in_neg_flags & NETLOGON_NEG_SUPPORTS_AES) {
 913                 srv_flgs |= NETLOGON_NEG_SUPPORTS_AES;
 914         }
 915
 916         if (lp_server_schannel() != false) {
 917                 srv_flgs |= NETLOGON_NEG_SCHANNEL;
 918         }
 919
 920         /*
 921          * Support authenticaten of trusted domains.
 922          *
 923          * These flags are the minimum required set which works with win2k3
 924          * and win2k8.
 925          */
 926         if (pdb_capabilities() & PDB_CAP_TRUSTED_DOMAINS_EX) {
 927                 srv_flgs |= NETLOGON_NEG_TRANSITIVE_TRUSTS |
 928                             NETLOGON_NEG_DNS_DOMAIN_TRUSTS |
 929                             NETLOGON_NEG_CROSS_FOREST_TRUSTS |
 930                             NETLOGON_NEG_NEUTRALIZE_NT4_EMULATION;
 931         }
 932
 933         switch (p->opnum) {
 934                 case NDR_NETR_SERVERAUTHENTICATE:
 935                         fn = "_netr_ServerAuthenticate";
 936                         break;
 937                 case NDR_NETR_SERVERAUTHENTICATE2:
 938                         fn = "_netr_ServerAuthenticate2";
 939                         break;
 940                 case NDR_NETR_SERVERAUTHENTICATE3:
 941                         fn = "_netr_ServerAuthenticate3";
 942                         break;
 943                 default:
 944                         return NT_STATUS_INTERNAL_ERROR;
 945         }
 946
 947         /* We use this as the key to store the creds: */
 948         /* r->in.computer_name */
 949
 950         if (!pipe_state) {
 951                 DEBUG(0,("%s: no challenge sent to client %s\n", fn,
 952                         r->in.computer_name));
 953                 status = NT_STATUS_ACCESS_DENIED;
 954                 goto out;
 955         }
 956
 957         if ( (lp_server_schannel() == true) &&
 958              ((in_neg_flags & NETLOGON_NEG_SCHANNEL) == 0) ) {
 959
 960                 /* schannel must be used, but client did not offer it. */
 961                 DEBUG(0,("%s: schannel required but client failed "
 962                         "to offer it. Client was %s\n",
 963                         fn, r->in.account_name));
 964                 status = NT_STATUS_ACCESS_DENIED;
 965                 goto out;
 966         }
 967
 968         status = get_md4pw(&mach_pwd,
 969                            r->in.account_name,
 970                            r->in.secure_channel_type,
 971                            &sid, p->msg_ctx);
 972         if (!NT_STATUS_IS_OK(status)) {
 973                 DEBUG(0,("%s: failed to get machine password for "
 974                         "account %s: %s\n",
 975                         fn, r->in.account_name, nt_errstr(status) ));
 976                 /* always return NT_STATUS_ACCESS_DENIED */
 977                 status = NT_STATUS_ACCESS_DENIED;
 978                 goto out;
 979         }
 980
 981         /* From the client / server challenges and md4 password, generate sess key */
 982         /* Check client credentials are valid. */
 983         creds = netlogon_creds_server_init(p->mem_ctx,
 984                                            r->in.account_name,
 985                                            r->in.computer_name,
 986                                            r->in.secure_channel_type,
 987                                            &pipe_state->client_challenge,
 988                                            &pipe_state->server_challenge,
 989                                            &mach_pwd,
 990                                            r->in.credentials,
 991                                            r->out.return_credentials,
 992                                            srv_flgs);
 993         if (!creds) {
 994                 DEBUG(0,("%s: netlogon_creds_server_check failed. Rejecting auth "
 995                         "request from client %s machine account %s\n",
 996                         fn, r->in.computer_name,
 997                         r->in.account_name));
 998                 status = NT_STATUS_ACCESS_DENIED;
 999                 goto out;
1000         }
1001
1002         creds->sid = dom_sid_dup(creds, &sid);
1003         if (!creds->sid) {
1004                 status = NT_STATUS_NO_MEMORY;
1005                 goto out;
1006         }
1007
1008         lp_ctx = loadparm_init_s3(p->mem_ctx, loadparm_s3_helpers());
1009         if (lp_ctx == NULL) {
1010                 DEBUG(10, ("loadparm_init_s3 failed\n"));
1011                 status = NT_STATUS_INTERNAL_ERROR;
1012                 goto out;
1013         }
1014
1015         /* Store off the state so we can continue after client disconnect. */
1016         become_root();
1017         status = schannel_save_creds_state(p->mem_ctx, lp_ctx, creds);
1018         unbecome_root();
1019
1020         talloc_unlink(p->mem_ctx, lp_ctx);
1021
1022         if (!NT_STATUS_IS_OK(status)) {
1023                 goto out;
1024         }
1025
1026         sid_peek_rid(&sid, r->out.rid);
1027
1028         status = NT_STATUS_OK;
1029
1030   out:
1031
1032         *r->out.negotiate_flags = srv_flgs;
1033         return status;
1034 }
1035
1036 /*************************************************************************
1037  _netr_ServerAuthenticate2
1038  *************************************************************************/
1039
1040 NTSTATUS _netr_ServerAuthenticate2(struct pipes_struct *p,
1041                                    struct netr_ServerAuthenticate2 *r)
1042 {
1043         struct netr_ServerAuthenticate3 a;
1044         uint32_t rid;
1045
1046         a.in.server_name                = r->in.server_name;
1047         a.in.account_name               = r->in.account_name;
1048         a.in.secure_channel_type        = r->in.secure_channel_type;
1049         a.in.computer_name              = r->in.computer_name;
1050         a.in.credentials                = r->in.credentials;
1051         a.in.negotiate_flags            = r->in.negotiate_flags;
1052
1053         a.out.return_credentials        = r->out.return_credentials;
1054         a.out.rid                       = &rid;
1055         a.out.negotiate_flags           = r->out.negotiate_flags;
1056
1057         return _netr_ServerAuthenticate3(p, &a);
1058 }
1059
1060 /*************************************************************************
1061  * If schannel is required for this call test that it actually is available.
1062  *************************************************************************/
1063 static NTSTATUS schannel_check_required(struct pipe_auth_data *auth_info,
1064                                         const char *computer_name,
1065                                         bool integrity, bool privacy)
1066 {
1067         if (auth_info && auth_info->auth_type == DCERPC_AUTH_TYPE_SCHANNEL) {
1068                 if (!privacy && !integrity) {
1069                         return NT_STATUS_OK;
1070                 }
1071
1072                 if ((!privacy && integrity) &&
1073                     auth_info->auth_level == DCERPC_AUTH_LEVEL_INTEGRITY) {
1074                         return NT_STATUS_OK;
1075                 }
1076
1077                 if ((privacy || integrity) &&
1078                     auth_info->auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
1079                         return NT_STATUS_OK;
1080                 }
1081         }
1082
1083         /* test didn't pass */
1084         DEBUG(0, ("schannel_check_required: [%s] is not using schannel\n",
1085                   computer_name));
1086
1087         return NT_STATUS_ACCESS_DENIED;
1088 }
1089
1090 /*************************************************************************
1091  *************************************************************************/
1092
1093 static NTSTATUS netr_creds_server_step_check(struct pipes_struct *p,
1094                                              TALLOC_CTX *mem_ctx,
1095                                              const char *computer_name,
1096                                              struct netr_Authenticator *received_authenticator,
1097                                              struct netr_Authenticator *return_authenticator,
1098                                              struct netlogon_creds_CredentialState **creds_out)
1099 {
1100         NTSTATUS status;
1101         bool schannel_global_required = (lp_server_schannel() == true) ? true:false;
1102         struct loadparm_context *lp_ctx;
1103
1104         if (schannel_global_required) {
1105                 status = schannel_check_required(&p->auth,
1106                                                  computer_name,
1107                                                  false, false);
1108                 if (!NT_STATUS_IS_OK(status)) {
1109                         return status;
1110                 }
1111         }
1112
1113         lp_ctx = loadparm_init_s3(mem_ctx, loadparm_s3_helpers());
1114         if (lp_ctx == NULL) {
1115                 DEBUG(0, ("loadparm_init_s3 failed\n"));
1116                 return NT_STATUS_INTERNAL_ERROR;
1117         }
1118
1119         status = schannel_check_creds_state(mem_ctx, lp_ctx,
1120                                             computer_name, received_authenticator,
1121                                             return_authenticator, creds_out);
1122         talloc_unlink(mem_ctx, lp_ctx);
1123         return status;
1124 }
1125
1126 /*************************************************************************
1127  *************************************************************************/
1128
1129 static NTSTATUS netr_set_machine_account_password(TALLOC_CTX *mem_ctx,
1130                                                   struct auth_session_info *session_info,
1131                                                   struct messaging_context *msg_ctx,
1132                                                   const char *account_name,
1133                                                   struct samr_Password *nt_hash)
1134 {
1135         NTSTATUS status;
1136         NTSTATUS result = NT_STATUS_OK;
1137         struct dcerpc_binding_handle *h = NULL;
1138         struct tsocket_address *local;
1139         struct policy_handle user_handle;
1140         uint32_t acct_ctrl;
1141         union samr_UserInfo *info;
1142         struct samr_UserInfo18 info18;
1143         DATA_BLOB in,out;
1144         int rc;
1145         DATA_BLOB session_key;
1146
1147         ZERO_STRUCT(user_handle);
1148
1149         status = session_extract_session_key(session_info,
1150                                              &session_key,
1151                                              KEY_USE_16BYTES);
1152         if (!NT_STATUS_IS_OK(status)) {
1153                 goto out;
1154         }
1155
1156         rc = tsocket_address_inet_from_strings(mem_ctx,
1157                                                "ip",
1158                                                "127.0.0.1",
1159                                                0,
1160                                                &local);
1161         if (rc < 0) {
1162                 status = NT_STATUS_NO_MEMORY;
1163                 goto out;
1164         }
1165
1166         status = rpcint_binding_handle(mem_ctx,
1167                                        &ndr_table_samr,
1168                                        local,
1169                                        session_info,
1170                                        msg_ctx,
1171                                        &h);
1172         if (!NT_STATUS_IS_OK(status)) {
1173                 goto out;
1174         }
1175
1176         become_root();
1177         status = samr_find_machine_account(mem_ctx,
1178                                            h,
1179                                            account_name,
1180                                            SEC_FLAG_MAXIMUM_ALLOWED,
1181                                            NULL,
1182                                            NULL,
1183                                            &user_handle);
1184         unbecome_root();
1185         if (!NT_STATUS_IS_OK(status)) {
1186                 goto out;
1187         }
1188
1189         status = dcerpc_samr_QueryUserInfo2(h,
1190                                             mem_ctx,
1191                                             &user_handle,
1192                                             UserControlInformation,
1193                                             &info,
1194                                             &result);
1195         if (!NT_STATUS_IS_OK(status)) {
1196                 goto out;
1197         }
1198         if (!NT_STATUS_IS_OK(result)) {
1199                 status = result;
1200                 goto out;
1201         }
1202
1203         acct_ctrl = info->info16.acct_flags;
1204
1205         if (!(acct_ctrl & ACB_WSTRUST ||
1206               acct_ctrl & ACB_SVRTRUST ||
1207               acct_ctrl & ACB_DOMTRUST)) {
1208                 status = NT_STATUS_NO_SUCH_USER;
1209                 goto out;
1210         }
1211
1212         if (acct_ctrl & ACB_DISABLED) {
1213                 status = NT_STATUS_ACCOUNT_DISABLED;
1214                 goto out;
1215         }
1216
1217         ZERO_STRUCT(info18);
1218
1219         in = data_blob_const(nt_hash->hash, 16);
1220         out = data_blob_talloc_zero(mem_ctx, 16);
1221         sess_crypt_blob(&out, &in, &session_key, true);
1222         memcpy(info18.nt_pwd.hash, out.data, out.length);
1223
1224         info18.nt_pwd_active = true;
1225
1226         info->info18 = info18;
1227
1228         become_root();
1229         status = dcerpc_samr_SetUserInfo2(h,
1230                                           mem_ctx,
1231                                           &user_handle,
1232                                           UserInternal1Information,
1233                                           info,
1234                                           &result);
1235         unbecome_root();
1236         if (!NT_STATUS_IS_OK(status)) {
1237                 goto out;
1238         }
1239         if (!NT_STATUS_IS_OK(result)) {
1240                 status = result;
1241                 goto out;
1242         }
1243
1244  out:
1245         if (h && is_valid_policy_hnd(&user_handle)) {
1246                 dcerpc_samr_Close(h, mem_ctx, &user_handle, &result);
1247         }
1248
1249         return status;
1250 }
1251
1252 /*************************************************************************
1253  _netr_ServerPasswordSet
1254  *************************************************************************/
1255
1256 NTSTATUS _netr_ServerPasswordSet(struct pipes_struct *p,
1257                                  struct netr_ServerPasswordSet *r)
1258 {
1259         NTSTATUS status = NT_STATUS_OK;
1260         int i;
1261         struct netlogon_creds_CredentialState *creds;
1262
1263         DEBUG(5,("_netr_ServerPasswordSet: %d\n", __LINE__));
1264
1265         become_root();
1266         status = netr_creds_server_step_check(p, p->mem_ctx,
1267                                               r->in.computer_name,
1268                                               r->in.credential,
1269                                               r->out.return_authenticator,
1270                                               &creds);
1271         unbecome_root();
1272
1273         if (!NT_STATUS_IS_OK(status)) {
1274                 DEBUG(2,("_netr_ServerPasswordSet: netlogon_creds_server_step failed. Rejecting auth "
1275                         "request from client %s machine account %s\n",
1276                         r->in.computer_name, creds->computer_name));
1277                 TALLOC_FREE(creds);
1278                 return status;
1279         }
1280
1281         DEBUG(3,("_netr_ServerPasswordSet: Server Password Set by remote machine:[%s] on account [%s]\n",
1282                         r->in.computer_name, creds->computer_name));
1283
1284         netlogon_creds_des_decrypt(creds, r->in.new_password);
1285
1286         DEBUG(100,("_netr_ServerPasswordSet: new given value was :\n"));
1287         for(i = 0; i < sizeof(r->in.new_password->hash); i++)
1288                 DEBUG(100,("%02X ", r->in.new_password->hash[i]));
1289         DEBUG(100,("\n"));
1290
1291         status = netr_set_machine_account_password(p->mem_ctx,
1292                                                    p->session_info,
1293                                                    p->msg_ctx,
1294                                                    creds->account_name,
1295                                                    r->in.new_password);
1296         return status;
1297 }
1298
1299 /****************************************************************
1300  _netr_ServerPasswordSet2
1301 ****************************************************************/
1302
1303 NTSTATUS _netr_ServerPasswordSet2(struct pipes_struct *p,
1304                                   struct netr_ServerPasswordSet2 *r)
1305 {
1306         NTSTATUS status;
1307         struct netlogon_creds_CredentialState *creds = NULL;
1308         DATA_BLOB plaintext;
1309         struct samr_CryptPassword password_buf;
1310         struct samr_Password nt_hash;
1311
1312         become_root();
1313         status = netr_creds_server_step_check(p, p->mem_ctx,
1314                                               r->in.computer_name,
1315                                               r->in.credential,
1316                                               r->out.return_authenticator,
1317                                               &creds);
1318         unbecome_root();
1319
1320         if (!NT_STATUS_IS_OK(status)) {
1321                 const char *computer_name = "<unknown>";
1322
1323                 if (creds && creds->computer_name) {
1324                         computer_name = creds->computer_name;
1325                 }
1326                 DEBUG(2,("_netr_ServerPasswordSet2: netlogon_creds_server_step "
1327                         "failed. Rejecting auth request from client %s machine account %s\n",
1328                         r->in.computer_name, computer_name));
1329                 TALLOC_FREE(creds);
1330                 return status;
1331         }
1332
1333         memcpy(password_buf.data, r->in.new_password->data, 512);
1334         SIVAL(password_buf.data, 512, r->in.new_password->length);
1335
1336         if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
1337                 netlogon_creds_aes_decrypt(creds, password_buf.data, 516);
1338         } else {
1339                 netlogon_creds_arcfour_crypt(creds, password_buf.data, 516);
1340         }
1341
1342         if (!extract_pw_from_buffer(p->mem_ctx, password_buf.data, &plaintext)) {
1343                 TALLOC_FREE(creds);
1344                 return NT_STATUS_WRONG_PASSWORD;
1345         }
1346
1347         mdfour(nt_hash.hash, plaintext.data, plaintext.length);
1348
1349         status = netr_set_machine_account_password(p->mem_ctx,
1350                                                    p->session_info,
1351                                                    p->msg_ctx,
1352                                                    creds->account_name,
1353                                                    &nt_hash);
1354         TALLOC_FREE(creds);
1355         return status;
1356 }
1357
1358 /*************************************************************************
1359  _netr_LogonSamLogoff
1360  *************************************************************************/
1361
1362 NTSTATUS _netr_LogonSamLogoff(struct pipes_struct *p,
1363                               struct netr_LogonSamLogoff *r)
1364 {
1365         NTSTATUS status;
1366         struct netlogon_creds_CredentialState *creds;
1367
1368         become_root();
1369         status = netr_creds_server_step_check(p, p->mem_ctx,
1370                                               r->in.computer_name,
1371                                               r->in.credential,
1372                                               r->out.return_authenticator,
1373                                               &creds);
1374         unbecome_root();
1375
1376         return status;
1377 }
1378
1379 static NTSTATUS _netr_LogonSamLogon_check(const struct netr_LogonSamLogonEx *r)
1380 {
1381         switch (r->in.logon_level) {
1382         case NetlogonInteractiveInformation:
1383         case NetlogonServiceInformation:
1384         case NetlogonInteractiveTransitiveInformation:
1385         case NetlogonServiceTransitiveInformation:
1386                 if (r->in.logon->password == NULL) {
1387                         return NT_STATUS_INVALID_PARAMETER;
1388                 }
1389
1390                 switch (r->in.validation_level) {
1391                 case NetlogonValidationSamInfo:  /* 2 */
1392                 case NetlogonValidationSamInfo2: /* 3 */
1393                         break;
1394                 case NetlogonValidationSamInfo4: /* 6 */
1395                         if ((pdb_capabilities() & PDB_CAP_ADS) == 0) {
1396                                 DEBUG(10,("Not adding validation info level 6 "
1397                                    "without ADS passdb backend\n"));
1398                                 return NT_STATUS_INVALID_INFO_CLASS;
1399                         }
1400                         break;
1401                 default:
1402                         return NT_STATUS_INVALID_INFO_CLASS;
1403                 }
1404
1405                 break;
1406         case NetlogonNetworkInformation:
1407         case NetlogonNetworkTransitiveInformation:
1408                 if (r->in.logon->network == NULL) {
1409                         return NT_STATUS_INVALID_PARAMETER;
1410                 }
1411
1412                 switch (r->in.validation_level) {
1413                 case NetlogonValidationSamInfo:  /* 2 */
1414                 case NetlogonValidationSamInfo2: /* 3 */
1415                         break;
1416                 case NetlogonValidationSamInfo4: /* 6 */
1417                         if ((pdb_capabilities() & PDB_CAP_ADS) == 0) {
1418                                 DEBUG(10,("Not adding validation info level 6 "
1419                                    "without ADS passdb backend\n"));
1420                                 return NT_STATUS_INVALID_INFO_CLASS;
1421                         }
1422                         break;
1423                 default:
1424                         return NT_STATUS_INVALID_INFO_CLASS;
1425                 }
1426
1427                 break;
1428
1429         case NetlogonGenericInformation:
1430                 if (r->in.logon->generic == NULL) {
1431                         return NT_STATUS_INVALID_PARAMETER;
1432                 }
1433
1434                 /* we don't support this here */
1435                 return NT_STATUS_INVALID_PARAMETER;
1436 #if 0
1437                 switch (r->in.validation_level) {
1438                 /* TODO: case NetlogonValidationGenericInfo: 4 */
1439                 case NetlogonValidationGenericInfo2: /* 5 */
1440                         break;
1441                 default:
1442                         return NT_STATUS_INVALID_INFO_CLASS;
1443                 }
1444
1445                 break;
1446 #endif
1447         default:
1448                 return NT_STATUS_INVALID_PARAMETER;
1449         }
1450
1451         return NT_STATUS_OK;
1452 }
1453
1454 /*************************************************************************
1455  _netr_LogonSamLogon_base
1456  *************************************************************************/
1457
1458 static NTSTATUS _netr_LogonSamLogon_base(struct pipes_struct *p,
1459                                          struct netr_LogonSamLogonEx *r,
1460                                          struct netlogon_creds_CredentialState *creds)
1461 {
1462         NTSTATUS status = NT_STATUS_OK;
1463         union netr_LogonLevel *logon = r->in.logon;
1464         const char *nt_username, *nt_domain, *nt_workstation;
1465         struct auth_usersupplied_info *user_info = NULL;
1466         struct auth_serversupplied_info *server_info = NULL;
1467         struct auth_context *auth_context = NULL;
1468         uint8_t pipe_session_key[16];
1469         bool process_creds = true;
1470         const char *fn;
1471
1472         switch (p->opnum) {
1473                 case NDR_NETR_LOGONSAMLOGON:
1474                         process_creds = true;
1475                         fn = "_netr_LogonSamLogon";
1476                         break;
1477                 case NDR_NETR_LOGONSAMLOGONWITHFLAGS:
1478                         process_creds = true;
1479                         fn = "_netr_LogonSamLogonWithFlags";
1480                         break;
1481                 case NDR_NETR_LOGONSAMLOGONEX:
1482                         process_creds = false;
1483                         fn = "_netr_LogonSamLogonEx";
1484                         break;
1485                 default:
1486                         return NT_STATUS_INTERNAL_ERROR;
1487         }
1488
1489         *r->out.authoritative = true; /* authoritative response */
1490
1491         switch (r->in.validation_level) {
1492         case 2:
1493                 r->out.validation->sam2 = talloc_zero(p->mem_ctx, struct netr_SamInfo2);
1494                 if (!r->out.validation->sam2) {
1495                         return NT_STATUS_NO_MEMORY;
1496                 }
1497                 break;
1498         case 3:
1499                 r->out.validation->sam3 = talloc_zero(p->mem_ctx, struct netr_SamInfo3);
1500                 if (!r->out.validation->sam3) {
1501                         return NT_STATUS_NO_MEMORY;
1502                 }
1503                 break;
1504         case 6:
1505                 r->out.validation->sam6 = talloc_zero(p->mem_ctx, struct netr_SamInfo6);
1506                 if (!r->out.validation->sam6) {
1507                         return NT_STATUS_NO_MEMORY;
1508                 }
1509                 break;
1510         default:
1511                 DEBUG(0,("%s: bad validation_level value %d.\n",
1512                         fn, (int)r->in.validation_level));
1513                 return NT_STATUS_INVALID_INFO_CLASS;
1514         }
1515
1516         switch (r->in.logon_level) {
1517         case NetlogonInteractiveInformation:
1518         case NetlogonServiceInformation:
1519         case NetlogonInteractiveTransitiveInformation:
1520         case NetlogonServiceTransitiveInformation:
1521                 nt_username     = logon->password->identity_info.account_name.string ?
1522                                   logon->password->identity_info.account_name.string : "";
1523                 nt_domain       = logon->password->identity_info.domain_name.string ?
1524                                   logon->password->identity_info.domain_name.string : "";
1525                 nt_workstation  = logon->password->identity_info.workstation.string ?
1526                                   logon->password->identity_info.workstation.string : "";
1527
1528                 DEBUG(3,("SAM Logon (Interactive). Domain:[%s].  ", lp_workgroup()));
1529                 break;
1530         case NetlogonNetworkInformation:
1531         case NetlogonNetworkTransitiveInformation:
1532                 nt_username     = logon->network->identity_info.account_name.string ?
1533                                   logon->network->identity_info.account_name.string : "";
1534                 nt_domain       = logon->network->identity_info.domain_name.string ?
1535                                   logon->network->identity_info.domain_name.string : "";
1536                 nt_workstation  = logon->network->identity_info.workstation.string ?
1537                                   logon->network->identity_info.workstation.string : "";
1538
1539                 DEBUG(3,("SAM Logon (Network). Domain:[%s].  ", lp_workgroup()));
1540                 break;
1541         default:
1542                 DEBUG(2,("SAM Logon: unsupported switch value\n"));
1543                 return NT_STATUS_INVALID_INFO_CLASS;
1544         } /* end switch */
1545
1546         DEBUG(3,("User:[%s@%s] Requested Domain:[%s]\n", nt_username, nt_workstation, nt_domain));
1547         fstrcpy(current_user_info.smb_name, nt_username);
1548         sub_set_smb_name(nt_username);
1549
1550         DEBUG(5,("Attempting validation level %d for unmapped username %s.\n",
1551                 r->in.validation_level, nt_username));
1552
1553         status = NT_STATUS_OK;
1554
1555         switch (r->in.logon_level) {
1556         case NetlogonNetworkInformation:
1557         case NetlogonNetworkTransitiveInformation:
1558         {
1559                 const char *wksname = nt_workstation;
1560
1561                 status = make_auth_context_fixed(talloc_tos(), &auth_context,
1562                                                  logon->network->challenge);
1563                 if (!NT_STATUS_IS_OK(status)) {
1564                         return status;
1565                 }
1566
1567                 /* For a network logon, the workstation name comes in with two
1568                  * backslashes in the front. Strip them if they are there. */
1569
1570                 if (*wksname == '\\') wksname++;
1571                 if (*wksname == '\\') wksname++;
1572
1573                 /* Standard challenge/response authentication */
1574                 if (!make_user_info_netlogon_network(&user_info,
1575                                                      nt_username, nt_domain,
1576                                                      wksname,
1577                                                      p->remote_address,
1578                                                      logon->network->identity_info.parameter_control,
1579                                                      logon->network->lm.data,
1580                                                      logon->network->lm.length,
1581                                                      logon->network->nt.data,
1582                                                      logon->network->nt.length)) {
1583                         status = NT_STATUS_NO_MEMORY;
1584                 }
1585                 break;
1586         }
1587         case NetlogonInteractiveInformation:
1588         case NetlogonServiceInformation:
1589         case NetlogonInteractiveTransitiveInformation:
1590         case NetlogonServiceTransitiveInformation:
1591
1592                 /* 'Interactive' authentication, supplies the password in its
1593                    MD4 form, encrypted with the session key.  We will convert
1594                    this to challenge/response for the auth subsystem to chew
1595                    on */
1596         {
1597                 uint8_t chal[8];
1598
1599                 status = make_auth_context_subsystem(talloc_tos(),
1600                                                      &auth_context);
1601                 if (!NT_STATUS_IS_OK(status)) {
1602                         return status;
1603                 }
1604
1605                 auth_get_ntlm_challenge(auth_context, chal);
1606
1607                 if (!make_user_info_netlogon_interactive(&user_info,
1608                                                          nt_username, nt_domain,
1609                                                          nt_workstation,
1610                                                          p->remote_address,
1611                                                          logon->password->identity_info.parameter_control,
1612                                                          chal,
1613                                                          logon->password->lmpassword.hash,
1614                                                          logon->password->ntpassword.hash,
1615                                                          creds->session_key)) {
1616                         status = NT_STATUS_NO_MEMORY;
1617                 }
1618                 break;
1619         }
1620         default:
1621                 DEBUG(2,("SAM Logon: unsupported switch value\n"));
1622                 return NT_STATUS_INVALID_INFO_CLASS;
1623         } /* end switch */
1624
1625         if ( NT_STATUS_IS_OK(status) ) {
1626                 status = auth_check_ntlm_password(auth_context,
1627                         user_info, &server_info);
1628         }
1629
1630         TALLOC_FREE(auth_context);
1631         free_user_info(&user_info);
1632
1633         DEBUG(5,("%s: check_password returned status %s\n",
1634                   fn, nt_errstr(status)));
1635
1636         /* Check account and password */
1637
1638         if (!NT_STATUS_IS_OK(status)) {
1639                 /* If we don't know what this domain is, we need to
1640                    indicate that we are not authoritative.  This
1641                    allows the client to decide if it needs to try
1642                    a local user.  Fix by jpjanosi@us.ibm.com, #2976 */
1643                 if ( NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)
1644                      && !strequal(nt_domain, get_global_sam_name())
1645                      && !is_trusted_domain(nt_domain) )
1646                         *r->out.authoritative = false; /* We are not authoritative */
1647
1648                 TALLOC_FREE(server_info);
1649                 return status;
1650         }
1651
1652         if (server_info->guest) {
1653                 /* We don't like guest domain logons... */
1654                 DEBUG(5,("%s: Attempted domain logon as GUEST "
1655                          "denied.\n", fn));
1656                 TALLOC_FREE(server_info);
1657                 return NT_STATUS_LOGON_FAILURE;
1658         }
1659
1660         /* This is the point at which, if the login was successful, that
1661            the SAM Local Security Authority should record that the user is
1662            logged in to the domain.  */
1663
1664         if (process_creds) {
1665                 /* Get the pipe session key from the creds. */
1666                 memcpy(pipe_session_key, creds->session_key, 16);
1667         } else {
1668                 struct schannel_state *schannel_auth;
1669                 /* Get the pipe session key from the schannel. */
1670                 if ((p->auth.auth_type != DCERPC_AUTH_TYPE_SCHANNEL)
1671                     || (p->auth.auth_ctx == NULL)) {
1672                         return NT_STATUS_INVALID_HANDLE;
1673                 }
1674
1675                 schannel_auth = talloc_get_type_abort(p->auth.auth_ctx,
1676                                                       struct schannel_state);
1677                 memcpy(pipe_session_key, schannel_auth->creds->session_key, 16);
1678         }
1679
1680         switch (r->in.validation_level) {
1681         case 2:
1682                 status = serverinfo_to_SamInfo2(server_info, pipe_session_key, 16,
1683                                                 r->out.validation->sam2);
1684                 break;
1685         case 3:
1686                 status = serverinfo_to_SamInfo3(server_info, pipe_session_key, 16,
1687                                                 r->out.validation->sam3);
1688                 break;
1689         case 6:
1690                 status = serverinfo_to_SamInfo6(server_info, pipe_session_key, 16,
1691                                                 r->out.validation->sam6);
1692                 break;
1693         }
1694
1695         TALLOC_FREE(server_info);
1696
1697         return status;
1698 }
1699
1700 /****************************************************************
1701  _netr_LogonSamLogonWithFlags
1702 ****************************************************************/
1703
1704 NTSTATUS _netr_LogonSamLogonWithFlags(struct pipes_struct *p,
1705                                       struct netr_LogonSamLogonWithFlags *r)
1706 {
1707         NTSTATUS status;
1708         struct netlogon_creds_CredentialState *creds;
1709         struct netr_LogonSamLogonEx r2;
1710         struct netr_Authenticator return_authenticator;
1711
1712         *r->out.authoritative = true;
1713
1714         r2.in.server_name       = r->in.server_name;
1715         r2.in.computer_name     = r->in.computer_name;
1716         r2.in.logon_level       = r->in.logon_level;
1717         r2.in.logon             = r->in.logon;
1718         r2.in.validation_level  = r->in.validation_level;
1719         r2.in.flags             = r->in.flags;
1720         r2.out.validation       = r->out.validation;
1721         r2.out.authoritative    = r->out.authoritative;
1722         r2.out.flags            = r->out.flags;
1723
1724         status = _netr_LogonSamLogon_check(&r2);
1725         if (!NT_STATUS_IS_OK(status)) {
1726                 return status;
1727         }
1728
1729         become_root();
1730         status = netr_creds_server_step_check(p, p->mem_ctx,
1731                                               r->in.computer_name,
1732                                               r->in.credential,
1733                                               &return_authenticator,
1734                                               &creds);
1735         unbecome_root();
1736         if (!NT_STATUS_IS_OK(status)) {
1737                 return status;
1738         }
1739
1740         status = _netr_LogonSamLogon_base(p, &r2, creds);
1741
1742         *r->out.return_authenticator = return_authenticator;
1743
1744         return status;
1745 }
1746
1747 /*************************************************************************
1748  _netr_LogonSamLogon
1749  *************************************************************************/
1750
1751 NTSTATUS _netr_LogonSamLogon(struct pipes_struct *p,
1752                              struct netr_LogonSamLogon *r)
1753 {
1754         NTSTATUS status;
1755         struct netr_LogonSamLogonWithFlags r2;
1756         uint32_t flags = 0;
1757
1758         r2.in.server_name               = r->in.server_name;
1759         r2.in.computer_name             = r->in.computer_name;
1760         r2.in.credential                = r->in.credential;
1761         r2.in.logon_level               = r->in.logon_level;
1762         r2.in.logon                     = r->in.logon;
1763         r2.in.validation_level          = r->in.validation_level;
1764         r2.in.return_authenticator      = r->in.return_authenticator;
1765         r2.in.flags                     = &flags;
1766         r2.out.validation               = r->out.validation;
1767         r2.out.authoritative            = r->out.authoritative;
1768         r2.out.flags                    = &flags;
1769         r2.out.return_authenticator     = r->out.return_authenticator;
1770
1771         status = _netr_LogonSamLogonWithFlags(p, &r2);
1772
1773         return status;
1774 }
1775
1776 /*************************************************************************
1777  _netr_LogonSamLogonEx
1778  - no credential chaining. Map into net sam logon.
1779  *************************************************************************/
1780
1781 NTSTATUS _netr_LogonSamLogonEx(struct pipes_struct *p,
1782                                struct netr_LogonSamLogonEx *r)
1783 {
1784         NTSTATUS status;
1785         struct netlogon_creds_CredentialState *creds = NULL;
1786         struct loadparm_context *lp_ctx;
1787
1788         *r->out.authoritative = true;
1789
1790         status = _netr_LogonSamLogon_check(r);
1791         if (!NT_STATUS_IS_OK(status)) {
1792                 return status;
1793         }
1794
1795         /* Only allow this if the pipe is protected. */
1796         if (p->auth.auth_type != DCERPC_AUTH_TYPE_SCHANNEL) {
1797                 DEBUG(0,("_netr_LogonSamLogonEx: client %s not using schannel for netlogon\n",
1798                         get_remote_machine_name() ));
1799                 return NT_STATUS_INVALID_PARAMETER;
1800         }
1801
1802         lp_ctx = loadparm_init_s3(p->mem_ctx, loadparm_s3_helpers());
1803         if (lp_ctx == NULL) {
1804                 DEBUG(0, ("loadparm_init_s3 failed\n"));
1805                 return NT_STATUS_INTERNAL_ERROR;
1806         }
1807
1808         become_root();
1809         status = schannel_get_creds_state(p->mem_ctx, lp_ctx,
1810                                           r->in.computer_name, &creds);
1811         unbecome_root();
1812         talloc_unlink(p->mem_ctx, lp_ctx);
1813
1814         if (!NT_STATUS_IS_OK(status)) {
1815                 return status;
1816         }
1817
1818         status = _netr_LogonSamLogon_base(p, r, creds);
1819         TALLOC_FREE(creds);
1820
1821         return status;
1822 }
1823
1824 /*************************************************************************
1825  _ds_enum_dom_trusts
1826  *************************************************************************/
1827 #if 0   /* JERRY -- not correct */
1828  NTSTATUS _ds_enum_dom_trusts(struct pipes_struct *p, DS_Q_ENUM_DOM_TRUSTS *q_u,
1829                              DS_R_ENUM_DOM_TRUSTS *r_u)
1830 {
1831         NTSTATUS status = NT_STATUS_OK;
1832
1833         /* TODO: According to MSDN, the can only be executed against a
1834            DC or domain member running Windows 2000 or later.  Need
1835            to test against a standalone 2k server and see what it
1836            does.  A windows 2000 DC includes its own domain in the
1837            list.  --jerry */
1838
1839         return status;
1840 }
1841 #endif  /* JERRY */
1842
1843
1844 /****************************************************************
1845 ****************************************************************/
1846
1847 WERROR _netr_LogonUasLogon(struct pipes_struct *p,
1848                            struct netr_LogonUasLogon *r)
1849 {
1850         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
1851         return WERR_NOT_SUPPORTED;
1852 }
1853
1854 /****************************************************************
1855 ****************************************************************/
1856
1857 WERROR _netr_LogonUasLogoff(struct pipes_struct *p,
1858                             struct netr_LogonUasLogoff *r)
1859 {
1860         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
1861         return WERR_NOT_SUPPORTED;
1862 }
1863
1864 /****************************************************************
1865 ****************************************************************/
1866
1867 NTSTATUS _netr_DatabaseDeltas(struct pipes_struct *p,
1868                               struct netr_DatabaseDeltas *r)
1869 {
1870         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
1871         return NT_STATUS_NOT_IMPLEMENTED;
1872 }
1873
1874 /****************************************************************
1875 ****************************************************************/
1876
1877 NTSTATUS _netr_DatabaseSync(struct pipes_struct *p,
1878                             struct netr_DatabaseSync *r)
1879 {
1880         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
1881         return NT_STATUS_NOT_IMPLEMENTED;
1882 }
1883
1884 /****************************************************************
1885 ****************************************************************/
1886
1887 NTSTATUS _netr_AccountDeltas(struct pipes_struct *p,
1888                              struct netr_AccountDeltas *r)
1889 {
1890         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
1891         return NT_STATUS_NOT_IMPLEMENTED;
1892 }
1893
1894 /****************************************************************
1895 ****************************************************************/
1896
1897 NTSTATUS _netr_AccountSync(struct pipes_struct *p,
1898                            struct netr_AccountSync *r)
1899 {
1900         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
1901         return NT_STATUS_NOT_IMPLEMENTED;
1902 }
1903
1904 /****************************************************************
1905 ****************************************************************/
1906
1907 static bool wb_getdcname(TALLOC_CTX *mem_ctx,
1908                          const char *domain,
1909                          const char **dcname,
1910                          uint32_t flags,
1911                          WERROR *werr)
1912 {
1913         wbcErr result;
1914         struct wbcDomainControllerInfo *dc_info = NULL;
1915
1916         result = wbcLookupDomainController(domain,
1917                                            flags,
1918                                            &dc_info);
1919         switch (result) {
1920         case WBC_ERR_SUCCESS:
1921                 break;
1922         case WBC_ERR_WINBIND_NOT_AVAILABLE:
1923                 return false;
1924         case WBC_ERR_DOMAIN_NOT_FOUND:
1925                 *werr = WERR_NO_SUCH_DOMAIN;
1926                 return true;
1927         default:
1928                 *werr = WERR_DOMAIN_CONTROLLER_NOT_FOUND;
1929                 return true;
1930         }
1931
1932         *dcname = talloc_strdup(mem_ctx, dc_info->dc_name);
1933         wbcFreeMemory(dc_info);
1934         if (!*dcname) {
1935                 *werr = WERR_NOMEM;
1936                 return false;
1937         }
1938
1939         *werr = WERR_OK;
1940
1941         return true;
1942 }
1943
1944 /****************************************************************
1945  _netr_GetDcName
1946 ****************************************************************/
1947
1948 WERROR _netr_GetDcName(struct pipes_struct *p,
1949                        struct netr_GetDcName *r)
1950 {
1951         NTSTATUS status;
1952         WERROR werr;
1953         uint32_t flags;
1954         struct netr_DsRGetDCNameInfo *info;
1955         bool ret;
1956
1957         ret = wb_getdcname(p->mem_ctx,
1958                            r->in.domainname,
1959                            r->out.dcname,
1960                            WBC_LOOKUP_DC_IS_FLAT_NAME |
1961                            WBC_LOOKUP_DC_RETURN_FLAT_NAME |
1962                            WBC_LOOKUP_DC_PDC_REQUIRED,
1963                            &werr);
1964         if (ret == true) {
1965                 return werr;
1966         }
1967
1968         flags = DS_PDC_REQUIRED | DS_IS_FLAT_NAME | DS_RETURN_FLAT_NAME;
1969
1970         status = dsgetdcname(p->mem_ctx,
1971                              p->msg_ctx,
1972                              r->in.domainname,
1973                              NULL,
1974                              NULL,
1975                              flags,
1976                              &info);
1977         if (!NT_STATUS_IS_OK(status)) {
1978                 return ntstatus_to_werror(status);
1979         }
1980
1981         *r->out.dcname = talloc_strdup(p->mem_ctx, info->dc_unc);
1982         talloc_free(info);
1983         if (!*r->out.dcname) {
1984                 return WERR_NOMEM;
1985         }
1986
1987         return WERR_OK;
1988 }
1989
1990 /****************************************************************
1991  _netr_GetAnyDCName
1992 ****************************************************************/
1993
1994 WERROR _netr_GetAnyDCName(struct pipes_struct *p,
1995                           struct netr_GetAnyDCName *r)
1996 {
1997         NTSTATUS status;
1998         WERROR werr;
1999         uint32_t flags;
2000         struct netr_DsRGetDCNameInfo *info;
2001         bool ret;
2002
2003         ret = wb_getdcname(p->mem_ctx,
2004                            r->in.domainname,
2005                            r->out.dcname,
2006                            WBC_LOOKUP_DC_IS_FLAT_NAME |
2007                            WBC_LOOKUP_DC_RETURN_FLAT_NAME,
2008                            &werr);
2009         if (ret == true) {
2010                 return werr;
2011         }
2012
2013         flags = DS_IS_FLAT_NAME | DS_RETURN_FLAT_NAME;
2014
2015         status = dsgetdcname(p->mem_ctx,
2016                              p->msg_ctx,
2017                              r->in.domainname,
2018                              NULL,
2019                              NULL,
2020                              flags,
2021                              &info);
2022         if (!NT_STATUS_IS_OK(status)) {
2023                 return ntstatus_to_werror(status);
2024         }
2025
2026         *r->out.dcname = talloc_strdup(p->mem_ctx, info->dc_unc);
2027         talloc_free(info);
2028         if (!*r->out.dcname) {
2029                 return WERR_NOMEM;
2030         }
2031
2032         return WERR_OK;
2033 }
2034
2035 /****************************************************************
2036 ****************************************************************/
2037
2038 NTSTATUS _netr_DatabaseSync2(struct pipes_struct *p,
2039                              struct netr_DatabaseSync2 *r)
2040 {
2041         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2042         return NT_STATUS_NOT_IMPLEMENTED;
2043 }
2044
2045 /****************************************************************
2046 ****************************************************************/
2047
2048 NTSTATUS _netr_DatabaseRedo(struct pipes_struct *p,
2049                             struct netr_DatabaseRedo *r)
2050 {
2051         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2052         return NT_STATUS_NOT_IMPLEMENTED;
2053 }
2054
2055 /****************************************************************
2056 ****************************************************************/
2057
2058 WERROR _netr_DsRGetDCName(struct pipes_struct *p,
2059                           struct netr_DsRGetDCName *r)
2060 {
2061         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2062         return WERR_NOT_SUPPORTED;
2063 }
2064
2065 /****************************************************************
2066 ****************************************************************/
2067
2068 NTSTATUS _netr_LogonGetCapabilities(struct pipes_struct *p,
2069                                     struct netr_LogonGetCapabilities *r)
2070 {
2071         struct netlogon_creds_CredentialState *creds;
2072         NTSTATUS status;
2073
2074         become_root();
2075         status = netr_creds_server_step_check(p, p->mem_ctx,
2076                                               r->in.computer_name,
2077                                               r->in.credential,
2078                                               r->out.return_authenticator,
2079                                               &creds);
2080         unbecome_root();
2081         if (!NT_STATUS_IS_OK(status)) {
2082                 return status;
2083         }
2084
2085         if (r->in.query_level != 1) {
2086                 return NT_STATUS_NOT_SUPPORTED;
2087         }
2088
2089         r->out.capabilities->server_capabilities = creds->negotiate_flags;
2090
2091         return NT_STATUS_OK;
2092 }
2093
2094 /****************************************************************
2095 ****************************************************************/
2096
2097 WERROR _netr_NETRLOGONSETSERVICEBITS(struct pipes_struct *p,
2098                                      struct netr_NETRLOGONSETSERVICEBITS *r)
2099 {
2100         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2101         return WERR_NOT_SUPPORTED;
2102 }
2103
2104 /****************************************************************
2105 ****************************************************************/
2106
2107 WERROR _netr_LogonGetTrustRid(struct pipes_struct *p,
2108                               struct netr_LogonGetTrustRid *r)
2109 {
2110         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2111         return WERR_NOT_SUPPORTED;
2112 }
2113
2114 /****************************************************************
2115 ****************************************************************/
2116
2117 WERROR _netr_NETRLOGONCOMPUTESERVERDIGEST(struct pipes_struct *p,
2118                                           struct netr_NETRLOGONCOMPUTESERVERDIGEST *r)
2119 {
2120         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2121         return WERR_NOT_SUPPORTED;
2122 }
2123
2124 /****************************************************************
2125 ****************************************************************/
2126
2127 WERROR _netr_NETRLOGONCOMPUTECLIENTDIGEST(struct pipes_struct *p,
2128                                           struct netr_NETRLOGONCOMPUTECLIENTDIGEST *r)
2129 {
2130         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2131         return WERR_NOT_SUPPORTED;
2132 }
2133
2134 /****************************************************************
2135 ****************************************************************/
2136
2137 WERROR _netr_DsRGetDCNameEx(struct pipes_struct *p,
2138                             struct netr_DsRGetDCNameEx *r)
2139 {
2140         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2141         return WERR_NOT_SUPPORTED;
2142 }
2143
2144 /****************************************************************
2145 ****************************************************************/
2146
2147 WERROR _netr_DsRGetSiteName(struct pipes_struct *p,
2148                             struct netr_DsRGetSiteName *r)
2149 {
2150         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2151         return WERR_NOT_SUPPORTED;
2152 }
2153
2154 /****************************************************************
2155 ****************************************************************/
2156
2157 NTSTATUS _netr_LogonGetDomainInfo(struct pipes_struct *p,
2158                                   struct netr_LogonGetDomainInfo *r)
2159 {
2160         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2161         return NT_STATUS_NOT_IMPLEMENTED;
2162 }
2163
2164 /****************************************************************
2165 ****************************************************************/
2166
2167 WERROR _netr_ServerPasswordGet(struct pipes_struct *p,
2168                                struct netr_ServerPasswordGet *r)
2169 {
2170         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2171         return WERR_NOT_SUPPORTED;
2172 }
2173
2174 /****************************************************************
2175 ****************************************************************/
2176
2177 WERROR _netr_NETRLOGONSENDTOSAM(struct pipes_struct *p,
2178                                 struct netr_NETRLOGONSENDTOSAM *r)
2179 {
2180         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2181         return WERR_NOT_SUPPORTED;
2182 }
2183
2184 /****************************************************************
2185 ****************************************************************/
2186
2187 WERROR _netr_DsRAddressToSitenamesW(struct pipes_struct *p,
2188                                     struct netr_DsRAddressToSitenamesW *r)
2189 {
2190         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2191         return WERR_NOT_SUPPORTED;
2192 }
2193
2194 /****************************************************************
2195 ****************************************************************/
2196
2197 WERROR _netr_DsRGetDCNameEx2(struct pipes_struct *p,
2198                              struct netr_DsRGetDCNameEx2 *r)
2199 {
2200         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2201         return WERR_NOT_SUPPORTED;
2202 }
2203
2204 /****************************************************************
2205 ****************************************************************/
2206
2207 WERROR _netr_NETRLOGONGETTIMESERVICEPARENTDOMAIN(struct pipes_struct *p,
2208                                                  struct netr_NETRLOGONGETTIMESERVICEPARENTDOMAIN *r)
2209 {
2210         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2211         return WERR_NOT_SUPPORTED;
2212 }
2213
2214 /****************************************************************
2215 ****************************************************************/
2216
2217 WERROR _netr_NetrEnumerateTrustedDomainsEx(struct pipes_struct *p,
2218                                            struct netr_NetrEnumerateTrustedDomainsEx *r)
2219 {
2220         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2221         return WERR_NOT_SUPPORTED;
2222 }
2223
2224 /****************************************************************
2225 ****************************************************************/
2226
2227 WERROR _netr_DsRAddressToSitenamesExW(struct pipes_struct *p,
2228                                       struct netr_DsRAddressToSitenamesExW *r)
2229 {
2230         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2231         return WERR_NOT_SUPPORTED;
2232 }
2233
2234 /****************************************************************
2235 ****************************************************************/
2236
2237 WERROR _netr_DsrGetDcSiteCoverageW(struct pipes_struct *p,
2238                                    struct netr_DsrGetDcSiteCoverageW *r)
2239 {
2240         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2241         return WERR_NOT_SUPPORTED;
2242 }
2243
2244 /****************************************************************
2245 ****************************************************************/
2246
2247 WERROR _netr_DsrEnumerateDomainTrusts(struct pipes_struct *p,
2248                                       struct netr_DsrEnumerateDomainTrusts *r)
2249 {
2250         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2251         return WERR_NOT_SUPPORTED;
2252 }
2253
2254 /****************************************************************
2255 ****************************************************************/
2256
2257 WERROR _netr_DsrDeregisterDNSHostRecords(struct pipes_struct *p,
2258                                          struct netr_DsrDeregisterDNSHostRecords *r)
2259 {
2260         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2261         return WERR_NOT_SUPPORTED;
2262 }
2263
2264 /****************************************************************
2265 ****************************************************************/
2266
2267 NTSTATUS _netr_ServerTrustPasswordsGet(struct pipes_struct *p,
2268                                        struct netr_ServerTrustPasswordsGet *r)
2269 {
2270         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2271         return NT_STATUS_NOT_IMPLEMENTED;
2272 }
2273
2274 /****************************************************************
2275 ****************************************************************/
2276
2277 WERROR _netr_DsRGetForestTrustInformation(struct pipes_struct *p,
2278                                           struct netr_DsRGetForestTrustInformation *r)
2279 {
2280         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2281         return WERR_NOT_SUPPORTED;
2282 }
2283
2284 /****************************************************************
2285 ****************************************************************/
2286
2287 static NTSTATUS fill_forest_trust_array(TALLOC_CTX *mem_ctx,
2288                                         struct lsa_ForestTrustInformation *info)
2289 {
2290         struct lsa_ForestTrustRecord *e;
2291         struct pdb_domain_info *dom_info;
2292         struct lsa_ForestTrustDomainInfo *domain_info;
2293
2294         dom_info = pdb_get_domain_info(mem_ctx);
2295         if (dom_info == NULL) {
2296                 return NT_STATUS_NO_MEMORY;
2297         }
2298
2299         info->count = 2;
2300         info->entries = talloc_array(info, struct lsa_ForestTrustRecord *, 2);
2301         if (info->entries == NULL) {
2302                 return NT_STATUS_NO_MEMORY;
2303         }
2304
2305         e = talloc(info, struct lsa_ForestTrustRecord);
2306         if (e == NULL) {
2307                 return NT_STATUS_NO_MEMORY;
2308         }
2309
2310         e->flags = 0;
2311         e->type = LSA_FOREST_TRUST_TOP_LEVEL_NAME;
2312         e->time = 0; /* so far always 0 in trces. */
2313         e->forest_trust_data.top_level_name.string = talloc_steal(info,
2314                                                                   dom_info->dns_forest);
2315
2316         info->entries[0] = e;
2317
2318         e = talloc(info, struct lsa_ForestTrustRecord);
2319         if (e == NULL) {
2320                 return NT_STATUS_NO_MEMORY;
2321         }
2322
2323         /* TODO: check if disabled and set flags accordingly */
2324         e->flags = 0;
2325         e->type = LSA_FOREST_TRUST_DOMAIN_INFO;
2326         e->time = 0; /* so far always 0 in traces. */
2327
2328         domain_info = &e->forest_trust_data.domain_info;
2329         domain_info->domain_sid = dom_sid_dup(info, &dom_info->sid);
2330
2331         domain_info->dns_domain_name.string = talloc_steal(info,
2332                                                            dom_info->dns_domain);
2333         domain_info->netbios_domain_name.string = talloc_steal(info,
2334                                                                dom_info->name);
2335
2336         info->entries[1] = e;
2337
2338         return NT_STATUS_OK;
2339 }
2340
2341 /****************************************************************
2342  _netr_GetForestTrustInformation
2343 ****************************************************************/
2344
2345 NTSTATUS _netr_GetForestTrustInformation(struct pipes_struct *p,
2346                                          struct netr_GetForestTrustInformation *r)
2347 {
2348         NTSTATUS status;
2349         struct netlogon_creds_CredentialState *creds;
2350         struct lsa_ForestTrustInformation *info, **info_ptr;
2351         struct loadparm_context *lp_ctx;
2352
2353         /* TODO: check server name */
2354
2355         lp_ctx = loadparm_init_s3(p->mem_ctx, loadparm_s3_helpers());
2356         if (lp_ctx == NULL) {
2357                 DEBUG(0, ("loadparm_init_s3 failed\n"));
2358                 return NT_STATUS_INTERNAL_ERROR;
2359         }
2360
2361         status = schannel_check_creds_state(p->mem_ctx, lp_ctx,
2362                                             r->in.computer_name,
2363                                             r->in.credential,
2364                                             r->out.return_authenticator,
2365                                             &creds);
2366         talloc_unlink(p->mem_ctx, lp_ctx);
2367         if (!NT_STATUS_IS_OK(status)) {
2368                 return status;
2369         }
2370
2371         if ((creds->secure_channel_type != SEC_CHAN_DNS_DOMAIN) &&
2372             (creds->secure_channel_type != SEC_CHAN_DOMAIN)) {
2373                 return NT_STATUS_NOT_IMPLEMENTED;
2374         }
2375
2376         info_ptr = talloc(p->mem_ctx, struct lsa_ForestTrustInformation *);
2377         if (!info_ptr) {
2378                 return NT_STATUS_NO_MEMORY;
2379         }
2380         info = talloc_zero(info_ptr, struct lsa_ForestTrustInformation);
2381         if (!info) {
2382                 return NT_STATUS_NO_MEMORY;
2383         }
2384
2385         status = fill_forest_trust_array(p->mem_ctx, info);
2386         if (!NT_STATUS_IS_OK(status)) {
2387                 return status;
2388         }
2389
2390         *info_ptr = info;
2391         r->out.forest_trust_info = info_ptr;
2392
2393         return NT_STATUS_OK;
2394 }
2395
2396 /****************************************************************
2397 ****************************************************************/
2398
2399 static NTSTATUS get_password_from_trustAuth(TALLOC_CTX *mem_ctx,
2400                                             const DATA_BLOB *trustAuth_blob,
2401                                             struct netlogon_creds_CredentialState *creds,
2402                                             struct samr_Password *current_pw_enc,
2403                                             struct samr_Password *previous_pw_enc)
2404 {
2405         enum ndr_err_code ndr_err;
2406         struct trustAuthInOutBlob trustAuth;
2407
2408         ndr_err = ndr_pull_struct_blob_all(trustAuth_blob, mem_ctx, &trustAuth,
2409                                            (ndr_pull_flags_fn_t)ndr_pull_trustAuthInOutBlob);
2410         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2411                 return NT_STATUS_UNSUCCESSFUL;
2412         }
2413
2414
2415         if (trustAuth.count != 0 && trustAuth.current.count != 0 &&
2416             trustAuth.current.array[0].AuthType == TRUST_AUTH_TYPE_CLEAR) {
2417                 mdfour(previous_pw_enc->hash,
2418                        trustAuth.current.array[0].AuthInfo.clear.password,
2419                        trustAuth.current.array[0].AuthInfo.clear.size);
2420         } else {
2421                 return NT_STATUS_UNSUCCESSFUL;
2422         }
2423
2424         netlogon_creds_arcfour_crypt(creds, current_pw_enc->hash, sizeof(current_pw_enc->hash));
2425
2426         if (trustAuth.previous.count != 0 &&
2427             trustAuth.previous.array[0].AuthType == TRUST_AUTH_TYPE_CLEAR) {
2428                 mdfour(previous_pw_enc->hash,
2429                        trustAuth.previous.array[0].AuthInfo.clear.password,
2430                        trustAuth.previous.array[0].AuthInfo.clear.size);
2431         } else {
2432                 mdfour(previous_pw_enc->hash, NULL, 0);
2433         }
2434
2435         netlogon_creds_arcfour_crypt(creds, previous_pw_enc->hash, sizeof(previous_pw_enc->hash));
2436
2437         return NT_STATUS_OK;
2438 }
2439
2440 /****************************************************************
2441  _netr_ServerGetTrustInfo
2442 ****************************************************************/
2443
2444 NTSTATUS _netr_ServerGetTrustInfo(struct pipes_struct *p,
2445                                   struct netr_ServerGetTrustInfo *r)
2446 {
2447         NTSTATUS status;
2448         struct netlogon_creds_CredentialState *creds;
2449         char *account_name;
2450         size_t account_name_last;
2451         bool trusted;
2452         struct netr_TrustInfo *trust_info;
2453         struct pdb_trusted_domain *td;
2454         DATA_BLOB trustAuth_blob;
2455         struct samr_Password *new_owf_enc;
2456         struct samr_Password *old_owf_enc;
2457         struct loadparm_context *lp_ctx;
2458
2459         lp_ctx = loadparm_init_s3(p->mem_ctx, loadparm_s3_helpers());
2460         if (lp_ctx == NULL) {
2461                 DEBUG(0, ("loadparm_init_s3 failed\n"));
2462                 return NT_STATUS_INTERNAL_ERROR;
2463         }
2464
2465         /* TODO: check server name */
2466
2467         status = schannel_check_creds_state(p->mem_ctx, lp_ctx,
2468                                             r->in.computer_name,
2469                                             r->in.credential,
2470                                             r->out.return_authenticator,
2471                                             &creds);
2472         talloc_unlink(p->mem_ctx, lp_ctx);
2473         if (!NT_STATUS_IS_OK(status)) {
2474                 return status;
2475         }
2476
2477         account_name = talloc_strdup(p->mem_ctx, r->in.account_name);
2478         if (account_name == NULL) {
2479                 return NT_STATUS_NO_MEMORY;
2480         }
2481
2482         account_name_last = strlen(account_name);
2483         if (account_name_last == 0) {
2484                 return NT_STATUS_INVALID_PARAMETER;
2485         }
2486         account_name_last--;
2487         if (account_name[account_name_last] == '.') {
2488                 account_name[account_name_last] = '\0';
2489         }
2490
2491         if ((creds->secure_channel_type != SEC_CHAN_DNS_DOMAIN) &&
2492             (creds->secure_channel_type != SEC_CHAN_DOMAIN)) {
2493                 trusted = false;
2494         } else {
2495                 trusted = true;
2496         }
2497
2498
2499         if (trusted) {
2500                 account_name_last = strlen(account_name);
2501                 if (account_name_last == 0) {
2502                         return NT_STATUS_INVALID_PARAMETER;
2503                 }
2504                 account_name_last--;
2505                 if (account_name[account_name_last] == '$') {
2506                         account_name[account_name_last] = '\0';
2507                 }
2508
2509                 status = pdb_get_trusted_domain(p->mem_ctx, account_name, &td);
2510                 if (!NT_STATUS_IS_OK(status)) {
2511                         return status;
2512                 }
2513
2514                 if (r->out.trust_info != NULL) {
2515                         trust_info = talloc_zero(p->mem_ctx, struct netr_TrustInfo);
2516                         if (trust_info == NULL) {
2517                                 return NT_STATUS_NO_MEMORY;
2518                         }
2519                         trust_info->count = 1;
2520
2521                         trust_info->data = talloc_array(trust_info, uint32_t, 1);
2522                         if (trust_info->data == NULL) {
2523                                 return NT_STATUS_NO_MEMORY;
2524                         }
2525                         trust_info->data[0] = td->trust_attributes;
2526
2527                         *r->out.trust_info = trust_info;
2528                 }
2529
2530                 new_owf_enc = talloc_zero(p->mem_ctx, struct samr_Password);
2531                 old_owf_enc = talloc_zero(p->mem_ctx, struct samr_Password);
2532                 if (new_owf_enc == NULL || old_owf_enc == NULL) {
2533                         return NT_STATUS_NO_MEMORY;
2534                 }
2535
2536 /* TODO: which trustAuth shall we use if we have in/out trust or do they have to
2537  * be equal ? */
2538                 if (td->trust_direction & NETR_TRUST_FLAG_INBOUND) {
2539                         trustAuth_blob = td->trust_auth_incoming;
2540                 } else if (td->trust_direction & NETR_TRUST_FLAG_OUTBOUND) {
2541                         trustAuth_blob = td->trust_auth_outgoing;
2542                 }
2543
2544                 status = get_password_from_trustAuth(p->mem_ctx, &trustAuth_blob,
2545                                                      creds,
2546                                                      new_owf_enc, old_owf_enc);
2547
2548                 if (!NT_STATUS_IS_OK(status)) {
2549                         return status;
2550                 }
2551
2552                 r->out.new_owf_password = new_owf_enc;
2553                 r->out.old_owf_password = old_owf_enc;
2554         } else {
2555 /* TODO: look for machine password */
2556                 r->out.new_owf_password = NULL;
2557                 r->out.old_owf_password = NULL;
2558
2559                 return NT_STATUS_NOT_IMPLEMENTED;
2560         }
2561
2562         return NT_STATUS_OK;
2563 }
2564
2565 /****************************************************************
2566 ****************************************************************/
2567
2568 NTSTATUS _netr_Unused47(struct pipes_struct *p,
2569                         struct netr_Unused47 *r)
2570 {
2571         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2572         return NT_STATUS_NOT_IMPLEMENTED;
2573 }
2574
2575 /****************************************************************
2576 ****************************************************************/
2577
2578 NTSTATUS _netr_DsrUpdateReadOnlyServerDnsRecords(struct pipes_struct *p,
2579                                                  struct netr_DsrUpdateReadOnlyServerDnsRecords *r)
2580 {
2581         p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
2582         return NT_STATUS_NOT_IMPLEMENTED;
2583 }