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 (lp_server_schannel() != false) {
 913                 srv_flgs |= NETLOGON_NEG_SCHANNEL;
 914         }
 915
 916         /*
 917          * Support authenticaten of trusted domains.
 918          *
 919          * These flags are the minimum required set which works with win2k3
 920          * and win2k8.
 921          */
 922         if (pdb_capabilities() & PDB_CAP_TRUSTED_DOMAINS_EX) {
 923                 srv_flgs |= NETLOGON_NEG_TRANSITIVE_TRUSTS |
 924                             NETLOGON_NEG_DNS_DOMAIN_TRUSTS |
 925                             NETLOGON_NEG_CROSS_FOREST_TRUSTS |
 926                             NETLOGON_NEG_NEUTRALIZE_NT4_EMULATION;
 927         }
 928
 929         switch (p->opnum) {
 930                 case NDR_NETR_SERVERAUTHENTICATE:
 931                         fn = "_netr_ServerAuthenticate";
 932                         break;
 933                 case NDR_NETR_SERVERAUTHENTICATE2:
 934                         fn = "_netr_ServerAuthenticate2";
 935                         break;
 936                 case NDR_NETR_SERVERAUTHENTICATE3:
 937                         fn = "_netr_ServerAuthenticate3";
 938                         break;
 939                 default:
 940                         return NT_STATUS_INTERNAL_ERROR;
 941         }
 942
 943         /* We use this as the key to store the creds: */
 944         /* r->in.computer_name */
 945
 946         if (!pipe_state) {
 947                 DEBUG(0,("%s: no challenge sent to client %s\n", fn,
 948                         r->in.computer_name));
 949                 status = NT_STATUS_ACCESS_DENIED;
 950                 goto out;
 951         }
 952
 953         if ( (lp_server_schannel() == true) &&
 954              ((in_neg_flags & NETLOGON_NEG_SCHANNEL) == 0) ) {
 955
 956                 /* schannel must be used, but client did not offer it. */
 957                 DEBUG(0,("%s: schannel required but client failed "
 958                         "to offer it. Client was %s\n",
 959                         fn, r->in.account_name));
 960                 status = NT_STATUS_ACCESS_DENIED;
 961                 goto out;
 962         }
 963
 964         status = get_md4pw(&mach_pwd,
 965                            r->in.account_name,
 966                            r->in.secure_channel_type,
 967                            &sid, p->msg_ctx);
 968         if (!NT_STATUS_IS_OK(status)) {
 969                 DEBUG(0,("%s: failed to get machine password for "
 970                         "account %s: %s\n",
 971                         fn, r->in.account_name, nt_errstr(status) ));
 972                 /* always return NT_STATUS_ACCESS_DENIED */
 973                 status = NT_STATUS_ACCESS_DENIED;
 974                 goto out;
 975         }
 976
 977         /* From the client / server challenges and md4 password, generate sess key */
 978         /* Check client credentials are valid. */
 979         creds = netlogon_creds_server_init(p->mem_ctx,
 980                                            r->in.account_name,
 981                                            r->in.computer_name,
 982                                            r->in.secure_channel_type,
 983                                            &pipe_state->client_challenge,
 984                                            &pipe_state->server_challenge,
 985                                            &mach_pwd,
 986                                            r->in.credentials,
 987                                            r->out.return_credentials,
 988                                            srv_flgs);
 989         if (!creds) {
 990                 DEBUG(0,("%s: netlogon_creds_server_check failed. Rejecting auth "
 991                         "request from client %s machine account %s\n",
 992                         fn, r->in.computer_name,
 993                         r->in.account_name));
 994                 status = NT_STATUS_ACCESS_DENIED;
 995                 goto out;
 996         }
 997
 998         creds->sid = dom_sid_dup(creds, &sid);
 999         if (!creds->sid) {
1000                 status = NT_STATUS_NO_MEMORY;
1001                 goto out;
1002         }
1003
1004         lp_ctx = loadparm_init_s3(p->mem_ctx, loadparm_s3_helpers());
1005         if (lp_ctx == NULL) {
1006                 DEBUG(10, ("loadparm_init_s3 failed\n"));
1007                 status = NT_STATUS_INTERNAL_ERROR;
1008                 goto out;
1009         }
1010
1011         /* Store off the state so we can continue after client disconnect. */
1012         become_root();
1013         status = schannel_save_creds_state(p->mem_ctx, lp_ctx, creds);
1014         unbecome_root();
1015
1016         talloc_unlink(p->mem_ctx, lp_ctx);
1017
1018         if (!NT_STATUS_IS_OK(status)) {
1019                 goto out;
1020         }
1021
1022         sid_peek_rid(&sid, r->out.rid);
1023
1024         status = NT_STATUS_OK;
1025
1026   out:
1027
1028         *r->out.negotiate_flags = srv_flgs;
1029         return status;
1030 }
1031
1032 /*************************************************************************
1033  _netr_ServerAuthenticate2
1034  *************************************************************************/
1035
1036 NTSTATUS _netr_ServerAuthenticate2(struct pipes_struct *p,
1037                                    struct netr_ServerAuthenticate2 *r)
1038 {
1039         struct netr_ServerAuthenticate3 a;
1040         uint32_t rid;
1041
1042         a.in.server_name                = r->in.server_name;
1043         a.in.account_name               = r->in.account_name;
1044         a.in.secure_channel_type        = r->in.secure_channel_type;
1045         a.in.computer_name              = r->in.computer_name;
1046         a.in.credentials                = r->in.credentials;
1047         a.in.negotiate_flags            = r->in.negotiate_flags;
1048
1049         a.out.return_credentials        = r->out.return_credentials;
1050         a.out.rid                       = &rid;
1051         a.out.negotiate_flags           = r->out.negotiate_flags;
1052
1053         return _netr_ServerAuthenticate3(p, &a);
1054 }
1055
1056 /*************************************************************************
1057  * If schannel is required for this call test that it actually is available.
1058  *************************************************************************/
1059 static NTSTATUS schannel_check_required(struct pipe_auth_data *auth_info,
1060                                         const char *computer_name,
1061                                         bool integrity, bool privacy)
1062 {
1063         if (auth_info && auth_info->auth_type == DCERPC_AUTH_TYPE_SCHANNEL) {
1064                 if (!privacy && !integrity) {
1065                         return NT_STATUS_OK;
1066                 }
1067
1068                 if ((!privacy && integrity) &&
1069                     auth_info->auth_level == DCERPC_AUTH_LEVEL_INTEGRITY) {
1070                         return NT_STATUS_OK;
1071                 }
1072
1073                 if ((privacy || integrity) &&
1074                     auth_info->auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
1075                         return NT_STATUS_OK;
1076                 }
1077         }
1078
1079         /* test didn't pass */
1080         DEBUG(0, ("schannel_check_required: [%s] is not using schannel\n",
1081                   computer_name));
1082
1083         return NT_STATUS_ACCESS_DENIED;
1084 }
1085
1086 /*************************************************************************
1087  *************************************************************************/
1088
1089 static NTSTATUS netr_creds_server_step_check(struct pipes_struct *p,
1090                                              TALLOC_CTX *mem_ctx,
1091                                              const char *computer_name,
1092                                              struct netr_Authenticator *received_authenticator,
1093                                              struct netr_Authenticator *return_authenticator,
1094                                              struct netlogon_creds_CredentialState **creds_out)
1095 {
1096         NTSTATUS status;
1097         bool schannel_global_required = (lp_server_schannel() == true) ? true:false;
1098         struct loadparm_context *lp_ctx;
1099
1100         if (schannel_global_required) {
1101                 status = schannel_check_required(&p->auth,
1102                                                  computer_name,
1103                                                  false, false);
1104                 if (!NT_STATUS_IS_OK(status)) {
1105                         return status;
1106                 }
1107         }
1108
1109         lp_ctx = loadparm_init_s3(mem_ctx, loadparm_s3_helpers());
1110         if (lp_ctx == NULL) {
1111                 DEBUG(0, ("loadparm_init_s3 failed\n"));
1112                 return NT_STATUS_INTERNAL_ERROR;
1113         }
1114
1115         status = schannel_check_creds_state(mem_ctx, lp_ctx,
1116                                             computer_name, received_authenticator,
1117                                             return_authenticator, creds_out);
1118         talloc_unlink(mem_ctx, lp_ctx);
1119         return status;
1120 }
1121
1122 /*************************************************************************
1123  *************************************************************************/
1124
1125 static NTSTATUS netr_set_machine_account_password(TALLOC_CTX *mem_ctx,
1126                                                   struct auth_session_info *session_info,
1127                                                   struct messaging_context *msg_ctx,
1128                                                   const char *account_name,
1129                                                   struct samr_Password *nt_hash)
1130 {
1131         NTSTATUS status;
1132         NTSTATUS result = NT_STATUS_OK;
1133         struct dcerpc_binding_handle *h = NULL;
1134         struct tsocket_address *local;
1135         struct policy_handle user_handle;
1136         uint32_t acct_ctrl;
1137         union samr_UserInfo *info;
1138         struct samr_UserInfo18 info18;
1139         DATA_BLOB in,out;
1140         int rc;
1141
1142         ZERO_STRUCT(user_handle);
1143
1144         rc = tsocket_address_inet_from_strings(mem_ctx,
1145                                                "ip",
1146                                                "127.0.0.1",
1147                                                0,
1148                                                &local);
1149         if (rc < 0) {
1150                 status = NT_STATUS_NO_MEMORY;
1151                 goto out;
1152         }
1153
1154         status = rpcint_binding_handle(mem_ctx,
1155                                        &ndr_table_samr,
1156                                        local,
1157                                        session_info,
1158                                        msg_ctx,
1159                                        &h);
1160         if (!NT_STATUS_IS_OK(status)) {
1161                 goto out;
1162         }
1163
1164         become_root();
1165         status = samr_find_machine_account(mem_ctx,
1166                                            h,
1167                                            account_name,
1168                                            SEC_FLAG_MAXIMUM_ALLOWED,
1169                                            NULL,
1170                                            NULL,
1171                                            &user_handle);
1172         unbecome_root();
1173         if (!NT_STATUS_IS_OK(status)) {
1174                 goto out;
1175         }
1176
1177         status = dcerpc_samr_QueryUserInfo2(h,
1178                                             mem_ctx,
1179                                             &user_handle,
1180                                             UserControlInformation,
1181                                             &info,
1182                                             &result);
1183         if (!NT_STATUS_IS_OK(status)) {
1184                 goto out;
1185         }
1186         if (!NT_STATUS_IS_OK(result)) {
1187                 status = result;
1188                 goto out;
1189         }
1190
1191         acct_ctrl = info->info16.acct_flags;
1192
1193         if (!(acct_ctrl & ACB_WSTRUST ||
1194               acct_ctrl & ACB_SVRTRUST ||
1195               acct_ctrl & ACB_DOMTRUST)) {
1196                 status = NT_STATUS_NO_SUCH_USER;
1197                 goto out;
1198         }
1199
1200         if (acct_ctrl & ACB_DISABLED) {
1201                 status = NT_STATUS_ACCOUNT_DISABLED;
1202                 goto out;
1203         }
1204
1205         ZERO_STRUCT(info18);
1206
1207         in = data_blob_const(nt_hash->hash, 16);
1208         out = data_blob_talloc_zero(mem_ctx, 16);
1209         sess_crypt_blob(&out, &in, &session_info->session_key, true);
1210         memcpy(info18.nt_pwd.hash, out.data, out.length);
1211
1212         info18.nt_pwd_active = true;
1213
1214         info->info18 = info18;
1215
1216         become_root();
1217         status = dcerpc_samr_SetUserInfo2(h,
1218                                           mem_ctx,
1219                                           &user_handle,
1220                                           UserInternal1Information,
1221                                           info,
1222                                           &result);
1223         unbecome_root();
1224         if (!NT_STATUS_IS_OK(status)) {
1225                 goto out;
1226         }
1227         if (!NT_STATUS_IS_OK(result)) {
1228                 status = result;
1229                 goto out;
1230         }
1231
1232  out:
1233         if (h && is_valid_policy_hnd(&user_handle)) {
1234                 dcerpc_samr_Close(h, mem_ctx, &user_handle, &result);
1235         }
1236
1237         return status;
1238 }
1239
1240 /*************************************************************************
1241  _netr_ServerPasswordSet
1242  *************************************************************************/
1243
1244 NTSTATUS _netr_ServerPasswordSet(struct pipes_struct *p,
1245                                  struct netr_ServerPasswordSet *r)
1246 {
1247         NTSTATUS status = NT_STATUS_OK;
1248         int i;
1249         struct netlogon_creds_CredentialState *creds;
1250
1251         DEBUG(5,("_netr_ServerPasswordSet: %d\n", __LINE__));
1252
1253         become_root();
1254         status = netr_creds_server_step_check(p, p->mem_ctx,
1255                                               r->in.computer_name,
1256                                               r->in.credential,
1257                                               r->out.return_authenticator,
1258                                               &creds);
1259         unbecome_root();
1260
1261         if (!NT_STATUS_IS_OK(status)) {
1262                 DEBUG(2,("_netr_ServerPasswordSet: netlogon_creds_server_step failed. Rejecting auth "
1263                         "request from client %s machine account %s\n",
1264                         r->in.computer_name, creds->computer_name));
1265                 TALLOC_FREE(creds);
1266                 return status;
1267         }
1268
1269         DEBUG(3,("_netr_ServerPasswordSet: Server Password Set by remote machine:[%s] on account [%s]\n",
1270                         r->in.computer_name, creds->computer_name));
1271
1272         netlogon_creds_des_decrypt(creds, r->in.new_password);
1273
1274         DEBUG(100,("_netr_ServerPasswordSet: new given value was :\n"));
1275         for(i = 0; i < sizeof(r->in.new_password->hash); i++)
1276                 DEBUG(100,("%02X ", r->in.new_password->hash[i]));
1277         DEBUG(100,("\n"));
1278
1279         status = netr_set_machine_account_password(p->mem_ctx,
1280                                                    p->session_info,
1281                                                    p->msg_ctx,
1282                                                    creds->account_name,
1283                                                    r->in.new_password);
1284         return status;
1285 }
1286
1287 /****************************************************************
1288  _netr_ServerPasswordSet2
1289 ****************************************************************/
1290
1291 NTSTATUS _netr_ServerPasswordSet2(struct pipes_struct *p,
1292                                   struct netr_ServerPasswordSet2 *r)
1293 {
1294         NTSTATUS status;
1295         struct netlogon_creds_CredentialState *creds = NULL;
1296         DATA_BLOB plaintext;
1297         struct samr_CryptPassword password_buf;
1298         struct samr_Password nt_hash;
1299
1300         become_root();
1301         status = netr_creds_server_step_check(p, p->mem_ctx,
1302                                               r->in.computer_name,
1303                                               r->in.credential,
1304                                               r->out.return_authenticator,
1305                                               &creds);
1306         unbecome_root();
1307
1308         if (!NT_STATUS_IS_OK(status)) {
1309                 const char *computer_name = "<unknown>";
1310
1311                 if (creds && creds->computer_name) {
1312                         computer_name = creds->computer_name;
1313                 }
1314                 DEBUG(2,("_netr_ServerPasswordSet2: netlogon_creds_server_step "
1315                         "failed. Rejecting auth request from client %s machine account %s\n",
1316                         r->in.computer_name, computer_name));
1317                 TALLOC_FREE(creds);
1318                 return status;
1319         }
1320
1321         memcpy(password_buf.data, r->in.new_password->data, 512);
1322         SIVAL(password_buf.data, 512, r->in.new_password->length);
1323         netlogon_creds_arcfour_crypt(creds, password_buf.data, 516);
1324
1325         if (!extract_pw_from_buffer(p->mem_ctx, password_buf.data, &plaintext)) {
1326                 TALLOC_FREE(creds);
1327                 return NT_STATUS_WRONG_PASSWORD;
1328         }
1329
1330         mdfour(nt_hash.hash, plaintext.data, plaintext.length);
1331
1332         status = netr_set_machine_account_password(p->mem_ctx,
1333                                                    p->session_info,
1334                                                    p->msg_ctx,
1335                                                    creds->account_name,
1336                                                    &nt_hash);
1337         TALLOC_FREE(creds);
1338         return status;
1339 }
1340
1341 /*************************************************************************
1342  _netr_LogonSamLogoff
1343  *************************************************************************/
1344
1345 NTSTATUS _netr_LogonSamLogoff(struct pipes_struct *p,
1346                               struct netr_LogonSamLogoff *r)
1347 {
1348         NTSTATUS status;
1349         struct netlogon_creds_CredentialState *creds;
1350
1351         become_root();
1352         status = netr_creds_server_step_check(p, p->mem_ctx,
1353                                               r->in.computer_name,
1354                                               r->in.credential,
1355                                               r->out.return_authenticator,
1356                                               &creds);
1357         unbecome_root();
1358
1359         return status;
1360 }
1361
1362 static NTSTATUS _netr_LogonSamLogon_check(const struct netr_LogonSamLogonEx *r)
1363 {
1364         switch (r->in.logon_level) {
1365         case NetlogonInteractiveInformation:
1366         case NetlogonServiceInformation:
1367         case NetlogonInteractiveTransitiveInformation:
1368         case NetlogonServiceTransitiveInformation:
1369                 if (r->in.logon->password == NULL) {
1370                         return NT_STATUS_INVALID_PARAMETER;
1371                 }
1372
1373                 switch (r->in.validation_level) {
1374                 case NetlogonValidationSamInfo:  /* 2 */
1375                 case NetlogonValidationSamInfo2: /* 3 */
1376                         break;
1377                 case NetlogonValidationSamInfo4: /* 6 */
1378                         if ((pdb_capabilities() & PDB_CAP_ADS) == 0) {
1379                                 DEBUG(10,("Not adding validation info level 6 "
1380                                    "without ADS passdb backend\n"));
1381                                 return NT_STATUS_INVALID_INFO_CLASS;
1382                         }
1383                         break;
1384                 default:
1385                         return NT_STATUS_INVALID_INFO_CLASS;
1386                 }
1387
1388                 break;
1389         case NetlogonNetworkInformation:
1390         case NetlogonNetworkTransitiveInformation:
1391                 if (r->in.logon->network == NULL) {
1392                         return NT_STATUS_INVALID_PARAMETER;
1393                 }
1394
1395                 switch (r->in.validation_level) {
1396                 case NetlogonValidationSamInfo:  /* 2 */
1397                 case NetlogonValidationSamInfo2: /* 3 */
1398                         break;
1399                 case NetlogonValidationSamInfo4: /* 6 */
1400                         if ((pdb_capabilities() & PDB_CAP_ADS) == 0) {
1401                                 DEBUG(10,("Not adding validation info level 6 "
1402                                    "without ADS passdb backend\n"));
1403                                 return NT_STATUS_INVALID_INFO_CLASS;
1404                         }
1405                         break;
1406                 default:
1407                         return NT_STATUS_INVALID_INFO_CLASS;
1408                 }
1409
1410                 break;
1411
1412         case NetlogonGenericInformation:
1413                 if (r->in.logon->generic == NULL) {
1414                         return NT_STATUS_INVALID_PARAMETER;
1415                 }
1416
1417                 /* we don't support this here */
1418                 return NT_STATUS_INVALID_PARAMETER;
1419 #if 0
1420                 switch (r->in.validation_level) {
1421                 /* TODO: case NetlogonValidationGenericInfo: 4 */
1422                 case NetlogonValidationGenericInfo2: /* 5 */
1423                         break;
1424                 default:
1425                         return NT_STATUS_INVALID_INFO_CLASS;
1426                 }
1427
1428                 break;
1429 #endif
1430         default:
1431                 return NT_STATUS_INVALID_PARAMETER;
1432         }
1433
1434         return NT_STATUS_OK;
1435 }
1436
1437 /*************************************************************************
1438  _netr_LogonSamLogon_base
1439  *************************************************************************/
1440
1441 static NTSTATUS _netr_LogonSamLogon_base(struct pipes_struct *p,
1442                                          struct netr_LogonSamLogonEx *r,
1443                                          struct netlogon_creds_CredentialState *creds)
1444 {
1445         NTSTATUS status = NT_STATUS_OK;
1446         union netr_LogonLevel *logon = r->in.logon;
1447         const char *nt_username, *nt_domain, *nt_workstation;
1448         struct auth_usersupplied_info *user_info = NULL;
1449         struct auth_serversupplied_info *server_info = NULL;
1450         struct auth_context *auth_context = NULL;
1451         uint8_t pipe_session_key[16];
1452         bool process_creds = true;
1453         const char *fn;
1454
1455         switch (p->opnum) {
1456                 case NDR_NETR_LOGONSAMLOGON:
1457                         process_creds = true;
1458                         fn = "_netr_LogonSamLogon";
1459                         break;
1460                 case NDR_NETR_LOGONSAMLOGONWITHFLAGS:
1461                         process_creds = true;
1462                         fn = "_netr_LogonSamLogonWithFlags";
1463                         break;
1464                 case NDR_NETR_LOGONSAMLOGONEX:
1465                         process_creds = false;
1466                         fn = "_netr_LogonSamLogonEx";
1467                         break;
1468                 default:
1469                         return NT_STATUS_INTERNAL_ERROR;
1470         }
1471
1472         *r->out.authoritative = true; /* authoritative response */
1473
1474         switch (r->in.validation_level) {
1475         case 2:
1476                 r->out.validation->sam2 = talloc_zero(p->mem_ctx, struct netr_SamInfo2);
1477                 if (!r->out.validation->sam2) {
1478                         return NT_STATUS_NO_MEMORY;
1479                 }
1480                 break;
1481         case 3:
1482                 r->out.validation->sam3 = talloc_zero(p->mem_ctx, struct netr_SamInfo3);
1483                 if (!r->out.validation->sam3) {
1484                         return NT_STATUS_NO_MEMORY;
1485                 }
1486                 break;
1487         case 6:
1488                 r->out.validation->sam6 = talloc_zero(p->mem_ctx, struct netr_SamInfo6);
1489                 if (!r->out.validation->sam6) {
1490                         return NT_STATUS_NO_MEMORY;
1491                 }
1492                 break;
1493         default:
1494                 DEBUG(0,("%s: bad validation_level value %d.\n",
1495                         fn, (int)r->in.validation_level));
1496                 return NT_STATUS_INVALID_INFO_CLASS;
1497         }
1498
1499         switch (r->in.logon_level) {
1500         case NetlogonInteractiveInformation:
1501         case NetlogonServiceInformation:
1502         case NetlogonInteractiveTransitiveInformation:
1503         case NetlogonServiceTransitiveInformation:
1504                 nt_username     = logon->password->identity_info.account_name.string ?
1505                                   logon->password->identity_info.account_name.string : "";
1506                 nt_domain       = logon->password->identity_info.domain_name.string ?
1507                                   logon->password->identity_info.domain_name.string : "";
1508                 nt_workstation  = logon->password->identity_info.workstation.string ?
1509                                   logon->password->identity_info.workstation.string : "";
1510
1511                 DEBUG(3,("SAM Logon (Interactive). Domain:[%s].  ", lp_workgroup()));
1512                 break;
1513         case NetlogonNetworkInformation:
1514         case NetlogonNetworkTransitiveInformation:
1515                 nt_username     = logon->network->identity_info.account_name.string ?
1516                                   logon->network->identity_info.account_name.string : "";
1517                 nt_domain       = logon->network->identity_info.domain_name.string ?
1518                                   logon->network->identity_info.domain_name.string : "";
1519                 nt_workstation  = logon->network->identity_info.workstation.string ?
1520                                   logon->network->identity_info.workstation.string : "";
1521
1522                 DEBUG(3,("SAM Logon (Network). Domain:[%s].  ", lp_workgroup()));
1523                 break;
1524         default:
1525                 DEBUG(2,("SAM Logon: unsupported switch value\n"));
1526                 return NT_STATUS_INVALID_INFO_CLASS;
1527         } /* end switch */
1528
1529         DEBUG(3,("User:[%s@%s] Requested Domain:[%s]\n", nt_username, nt_workstation, nt_domain));
1530         fstrcpy(current_user_info.smb_name, nt_username);
1531         sub_set_smb_name(nt_username);
1532
1533         DEBUG(5,("Attempting validation level %d for unmapped username %s.\n",
1534                 r->in.validation_level, nt_username));
1535
1536         status = NT_STATUS_OK;
1537
1538         switch (r->in.logon_level) {
1539         case NetlogonNetworkInformation:
1540         case NetlogonNetworkTransitiveInformation:
1541         {
1542                 const char *wksname = nt_workstation;
1543
1544                 status = make_auth_context_fixed(talloc_tos(), &auth_context,
1545                                                  logon->network->challenge);
1546                 if (!NT_STATUS_IS_OK(status)) {
1547                         return status;
1548                 }
1549
1550                 /* For a network logon, the workstation name comes in with two
1551                  * backslashes in the front. Strip them if they are there. */
1552
1553                 if (*wksname == '\\') wksname++;
1554                 if (*wksname == '\\') wksname++;
1555
1556                 /* Standard challenge/response authentication */
1557                 if (!make_user_info_netlogon_network(&user_info,
1558                                                      nt_username, nt_domain,
1559                                                      wksname,
1560                                                      p->remote_address,
1561                                                      logon->network->identity_info.parameter_control,
1562                                                      logon->network->lm.data,
1563                                                      logon->network->lm.length,
1564                                                      logon->network->nt.data,
1565                                                      logon->network->nt.length)) {
1566                         status = NT_STATUS_NO_MEMORY;
1567                 }
1568                 break;
1569         }
1570         case NetlogonInteractiveInformation:
1571         case NetlogonServiceInformation:
1572         case NetlogonInteractiveTransitiveInformation:
1573         case NetlogonServiceTransitiveInformation:
1574
1575                 /* 'Interactive' authentication, supplies the password in its
1576                    MD4 form, encrypted with the session key.  We will convert
1577                    this to challenge/response for the auth subsystem to chew
1578                    on */
1579         {
1580                 uint8_t chal[8];
1581
1582                 status = make_auth_context_subsystem(talloc_tos(),
1583                                                      &auth_context);
1584                 if (!NT_STATUS_IS_OK(status)) {
1585                         return status;
1586                 }
1587
1588                 auth_get_ntlm_challenge(auth_context, chal);
1589
1590                 if (!make_user_info_netlogon_interactive(&user_info,
1591                                                          nt_username, nt_domain,
1592                                                          nt_workstation,
1593                                                          p->remote_address,
1594                                                          logon->password->identity_info.parameter_control,
1595                                                          chal,
1596                                                          logon->password->lmpassword.hash,
1597                                                          logon->password->ntpassword.hash,
1598                                                          creds->session_key)) {
1599                         status = NT_STATUS_NO_MEMORY;
1600                 }
1601                 break;
1602         }
1603         default:
1604                 DEBUG(2,("SAM Logon: unsupported switch value\n"));
1605                 return NT_STATUS_INVALID_INFO_CLASS;
1606         } /* end switch */
1607
1608         if ( NT_STATUS_IS_OK(status) ) {
1609                 status = auth_check_ntlm_password(auth_context,
1610                         user_info, &server_info);
1611         }
1612
1613         TALLOC_FREE(auth_context);
1614         free_user_info(&user_info);
1615
1616         DEBUG(5,("%s: check_password returned status %s\n",
1617                   fn, nt_errstr(status)));
1618
1619         /* Check account and password */
1620
1621         if (!NT_STATUS_IS_OK(status)) {
1622                 /* If we don't know what this domain is, we need to
1623                    indicate that we are not authoritative.  This
1624                    allows the client to decide if it needs to try
1625                    a local user.  Fix by jpjanosi@us.ibm.com, #2976 */
1626                 if ( NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)
1627                      && !strequal(nt_domain, get_global_sam_name())
1628                      && !is_trusted_domain(nt_domain) )
1629                         *r->out.authoritative = false; /* We are not authoritative */
1630
1631                 TALLOC_FREE(server_info);
1632                 return status;
1633         }
1634
1635         if (server_info->guest) {
1636                 /* We don't like guest domain logons... */
1637                 DEBUG(5,("%s: Attempted domain logon as GUEST "
1638                          "denied.\n", fn));
1639                 TALLOC_FREE(server_info);
1640                 return NT_STATUS_LOGON_FAILURE;
1641         }
1642
1643         /* This is the point at which, if the login was successful, that
1644            the SAM Local Security Authority should record that the user is
1645            logged in to the domain.  */
1646
1647         if (process_creds) {
1648                 /* Get the pipe session key from the creds. */
1649                 memcpy(pipe_session_key, creds->session_key, 16);
1650         } else {
1651                 struct schannel_state *schannel_auth;
1652                 /* Get the pipe session key from the schannel. */
1653                 if ((p->auth.auth_type != DCERPC_AUTH_TYPE_SCHANNEL)
1654                     || (p->auth.auth_ctx == NULL)) {
1655                         return NT_STATUS_INVALID_HANDLE;
1656                 }
1657
1658                 schannel_auth = talloc_get_type_abort(p->auth.auth_ctx,
1659                                                       struct schannel_state);
1660                 memcpy(pipe_session_key, schannel_auth->creds->session_key, 16);
1661         }
1662
1663         switch (r->in.validation_level) {
1664         case 2:
1665                 status = serverinfo_to_SamInfo2(server_info, pipe_session_key, 16,
1666                                                 r->out.validation->sam2);
1667                 break;
1668         case 3:
1669                 status = serverinfo_to_SamInfo3(server_info, pipe_session_key, 16,
1670                                                 r->out.validation->sam3);
1671                 break;
1672         case 6:
1673                 status = serverinfo_to_SamInfo6(server_info, pipe_session_key, 16,
1674                                                 r->out.validation->sam6);
1675                 break;
1676         }
1677
1678         TALLOC_FREE(server_info);
1679
1680         return status;
1681 }
1682
1683 /****************************************************************
1684  _netr_LogonSamLogonWithFlags
1685 ****************************************************************/
1686
1687 NTSTATUS _netr_LogonSamLogonWithFlags(struct pipes_struct *p,
1688                                       struct netr_LogonSamLogonWithFlags *r)
1689 {
1690         NTSTATUS status;
1691         struct netlogon_creds_CredentialState *creds;
1692         struct netr_LogonSamLogonEx r2;
1693         struct netr_Authenticator return_authenticator;
1694
1695         *r->out.authoritative = true;
1696
1697         r2.in.server_name       = r->in.server_name;
1698         r2.in.computer_name     = r->in.computer_name;
1699         r2.in.logon_level       = r->in.logon_level;
1700         r2.in.logon             = r->in.logon;
1701         r2.in.validation_level  = r->in.validation_level;
1702         r2.in.flags             = r->in.flags;
1703         r2.out.validation       = r->out.validation;
1704         r2.out.authoritative    = r->out.authoritative;
1705         r2.out.flags            = r->out.flags;
1706
1707         status = _netr_LogonSamLogon_check(&r2);
1708         if (!NT_STATUS_IS_OK(status)) {
1709                 return status;
1710         }
1711
1712         become_root();
1713         status = netr_creds_server_step_check(p, p->mem_ctx,
1714                                               r->in.computer_name,
1715                                               r->in.credential,
1716                                               &return_authenticator,
1717                                               &creds);
1718         unbecome_root();
1719         if (!NT_STATUS_IS_OK(status)) {
1720                 return status;
1721         }
1722
1723         status = _netr_LogonSamLogon_base(p, &r2, creds);
1724
1725         *r->out.return_authenticator = return_authenticator;
1726
1727         return status;
1728 }
1729
1730 /*************************************************************************
1731  _netr_LogonSamLogon
1732  *************************************************************************/
1733
1734 NTSTATUS _netr_LogonSamLogon(struct pipes_struct *p,
1735                              struct netr_LogonSamLogon *r)
1736 {
1737         NTSTATUS status;
1738         struct netr_LogonSamLogonWithFlags r2;
1739         uint32_t flags = 0;
1740
1741         r2.in.server_name               = r->in.server_name;
1742         r2.in.computer_name             = r->in.computer_name;
1743         r2.in.credential                = r->in.credential;
1744         r2.in.logon_level               = r->in.logon_level;
1745         r2.in.logon                     = r->in.logon;
1746         r2.in.validation_level          = r->in.validation_level;
1747         r2.in.return_authenticator      = r->in.return_authenticator;
1748         r2.in.flags                     = &flags;
1749         r2.out.validation               = r->out.validation;
1750         r2.out.authoritative            = r->out.authoritative;
1751         r2.out.flags                    = &flags;
1752         r2.out.return_authenticator     = r->out.return_authenticator;
1753
1754         status = _netr_LogonSamLogonWithFlags(p, &r2);
1755
1756         return status;
1757 }
1758
1759 /*************************************************************************
1760  _netr_LogonSamLogonEx
1761  - no credential chaining. Map into net sam logon.
1762  *************************************************************************/
1763
1764 NTSTATUS _netr_LogonSamLogonEx(struct pipes_struct *p,
1765                                struct netr_LogonSamLogonEx *r)
1766 {
1767         NTSTATUS status;
1768         struct netlogon_creds_CredentialState *creds = NULL;
1769         struct loadparm_context *lp_ctx;
1770
1771         *r->out.authoritative = true;
1772
1773         status = _netr_LogonSamLogon_check(r);
1774         if (!NT_STATUS_IS_OK(status)) {
1775                 return status;
1776         }
1777
1778         /* Only allow this if the pipe is protected. */
1779         if (p->auth.auth_type != DCERPC_AUTH_TYPE_SCHANNEL) {
1780                 DEBUG(0,("_netr_LogonSamLogonEx: client %s not using schannel for netlogon\n",
1781                         get_remote_machine_name() ));
1782                 return NT_STATUS_INVALID_PARAMETER;
1783         }
1784
1785         lp_ctx = loadparm_init_s3(p->mem_ctx, loadparm_s3_helpers());
1786         if (lp_ctx == NULL) {
1787                 DEBUG(0, ("loadparm_init_s3 failed\n"));
1788                 return NT_STATUS_INTERNAL_ERROR;
1789         }
1790
1791         become_root();
1792         status = schannel_get_creds_state(p->mem_ctx, lp_ctx,
1793                                           r->in.computer_name, &creds);
1794         unbecome_root();
1795         talloc_unlink(p->mem_ctx, lp_ctx);
1796
1797         if (!NT_STATUS_IS_OK(status)) {
1798                 return status;
1799         }
1800
1801         status = _netr_LogonSamLogon_base(p, r, creds);
1802         TALLOC_FREE(creds);
1803
1804         return status;
1805 }
1806
1807 /*************************************************************************
1808  _ds_enum_dom_trusts
1809  *************************************************************************/
1810 #if 0   /* JERRY -- not correct */
1811  NTSTATUS _ds_enum_dom_trusts(struct pipes_struct *p, DS_Q_ENUM_DOM_TRUSTS *q_u,
1812                              DS_R_ENUM_DOM_TRUSTS *r_u)
1813 {
1814         NTSTATUS status = NT_STATUS_OK;
1815
1816         /* TODO: According to MSDN, the can only be executed against a
1817            DC or domain member running Windows 2000 or later.  Need
1818            to test against a standalone 2k server and see what it
1819            does.  A windows 2000 DC includes its own domain in the
1820            list.  --jerry */
1821
1822         return status;
1823 }
1824 #endif  /* JERRY */
1825
1826
1827 /****************************************************************
1828 ****************************************************************/
1829
1830 WERROR _netr_LogonUasLogon(struct pipes_struct *p,
1831                            struct netr_LogonUasLogon *r)
1832 {
1833         p->rng_fault_state = true;
1834         return WERR_NOT_SUPPORTED;
1835 }
1836
1837 /****************************************************************
1838 ****************************************************************/
1839
1840 WERROR _netr_LogonUasLogoff(struct pipes_struct *p,
1841                             struct netr_LogonUasLogoff *r)
1842 {
1843         p->rng_fault_state = true;
1844         return WERR_NOT_SUPPORTED;
1845 }
1846
1847 /****************************************************************
1848 ****************************************************************/
1849
1850 NTSTATUS _netr_DatabaseDeltas(struct pipes_struct *p,
1851                               struct netr_DatabaseDeltas *r)
1852 {
1853         p->rng_fault_state = true;
1854         return NT_STATUS_NOT_IMPLEMENTED;
1855 }
1856
1857 /****************************************************************
1858 ****************************************************************/
1859
1860 NTSTATUS _netr_DatabaseSync(struct pipes_struct *p,
1861                             struct netr_DatabaseSync *r)
1862 {
1863         p->rng_fault_state = true;
1864         return NT_STATUS_NOT_IMPLEMENTED;
1865 }
1866
1867 /****************************************************************
1868 ****************************************************************/
1869
1870 NTSTATUS _netr_AccountDeltas(struct pipes_struct *p,
1871                              struct netr_AccountDeltas *r)
1872 {
1873         p->rng_fault_state = true;
1874         return NT_STATUS_NOT_IMPLEMENTED;
1875 }
1876
1877 /****************************************************************
1878 ****************************************************************/
1879
1880 NTSTATUS _netr_AccountSync(struct pipes_struct *p,
1881                            struct netr_AccountSync *r)
1882 {
1883         p->rng_fault_state = true;
1884         return NT_STATUS_NOT_IMPLEMENTED;
1885 }
1886
1887 /****************************************************************
1888 ****************************************************************/
1889
1890 static bool wb_getdcname(TALLOC_CTX *mem_ctx,
1891                          const char *domain,
1892                          const char **dcname,
1893                          uint32_t flags,
1894                          WERROR *werr)
1895 {
1896         wbcErr result;
1897         struct wbcDomainControllerInfo *dc_info = NULL;
1898
1899         result = wbcLookupDomainController(domain,
1900                                            flags,
1901                                            &dc_info);
1902         switch (result) {
1903         case WBC_ERR_SUCCESS:
1904                 break;
1905         case WBC_ERR_WINBIND_NOT_AVAILABLE:
1906                 return false;
1907         case WBC_ERR_DOMAIN_NOT_FOUND:
1908                 *werr = WERR_NO_SUCH_DOMAIN;
1909                 return true;
1910         default:
1911                 *werr = WERR_DOMAIN_CONTROLLER_NOT_FOUND;
1912                 return true;
1913         }
1914
1915         *dcname = talloc_strdup(mem_ctx, dc_info->dc_name);
1916         wbcFreeMemory(dc_info);
1917         if (!*dcname) {
1918                 *werr = WERR_NOMEM;
1919                 return false;
1920         }
1921
1922         *werr = WERR_OK;
1923
1924         return true;
1925 }
1926
1927 /****************************************************************
1928  _netr_GetDcName
1929 ****************************************************************/
1930
1931 WERROR _netr_GetDcName(struct pipes_struct *p,
1932                        struct netr_GetDcName *r)
1933 {
1934         NTSTATUS status;
1935         WERROR werr;
1936         uint32_t flags;
1937         struct netr_DsRGetDCNameInfo *info;
1938         bool ret;
1939
1940         ret = wb_getdcname(p->mem_ctx,
1941                            r->in.domainname,
1942                            r->out.dcname,
1943                            WBC_LOOKUP_DC_IS_FLAT_NAME |
1944                            WBC_LOOKUP_DC_RETURN_FLAT_NAME |
1945                            WBC_LOOKUP_DC_PDC_REQUIRED,
1946                            &werr);
1947         if (ret == true) {
1948                 return werr;
1949         }
1950
1951         flags = DS_PDC_REQUIRED | DS_IS_FLAT_NAME | DS_RETURN_FLAT_NAME;
1952
1953         status = dsgetdcname(p->mem_ctx,
1954                              p->msg_ctx,
1955                              r->in.domainname,
1956                              NULL,
1957                              NULL,
1958                              flags,
1959                              &info);
1960         if (!NT_STATUS_IS_OK(status)) {
1961                 return ntstatus_to_werror(status);
1962         }
1963
1964         *r->out.dcname = talloc_strdup(p->mem_ctx, info->dc_unc);
1965         talloc_free(info);
1966         if (!*r->out.dcname) {
1967                 return WERR_NOMEM;
1968         }
1969
1970         return WERR_OK;
1971 }
1972
1973 /****************************************************************
1974  _netr_GetAnyDCName
1975 ****************************************************************/
1976
1977 WERROR _netr_GetAnyDCName(struct pipes_struct *p,
1978                           struct netr_GetAnyDCName *r)
1979 {
1980         NTSTATUS status;
1981         WERROR werr;
1982         uint32_t flags;
1983         struct netr_DsRGetDCNameInfo *info;
1984         bool ret;
1985
1986         ret = wb_getdcname(p->mem_ctx,
1987                            r->in.domainname,
1988                            r->out.dcname,
1989                            WBC_LOOKUP_DC_IS_FLAT_NAME |
1990                            WBC_LOOKUP_DC_RETURN_FLAT_NAME,
1991                            &werr);
1992         if (ret == true) {
1993                 return werr;
1994         }
1995
1996         flags = DS_IS_FLAT_NAME | DS_RETURN_FLAT_NAME;
1997
1998         status = dsgetdcname(p->mem_ctx,
1999                              p->msg_ctx,
2000                              r->in.domainname,
2001                              NULL,
2002                              NULL,
2003                              flags,
2004                              &info);
2005         if (!NT_STATUS_IS_OK(status)) {
2006                 return ntstatus_to_werror(status);
2007         }
2008
2009         *r->out.dcname = talloc_strdup(p->mem_ctx, info->dc_unc);
2010         talloc_free(info);
2011         if (!*r->out.dcname) {
2012                 return WERR_NOMEM;
2013         }
2014
2015         return WERR_OK;
2016 }
2017
2018 /****************************************************************
2019 ****************************************************************/
2020
2021 NTSTATUS _netr_DatabaseSync2(struct pipes_struct *p,
2022                              struct netr_DatabaseSync2 *r)
2023 {
2024         p->rng_fault_state = true;
2025         return NT_STATUS_NOT_IMPLEMENTED;
2026 }
2027
2028 /****************************************************************
2029 ****************************************************************/
2030
2031 NTSTATUS _netr_DatabaseRedo(struct pipes_struct *p,
2032                             struct netr_DatabaseRedo *r)
2033 {
2034         p->rng_fault_state = true;
2035         return NT_STATUS_NOT_IMPLEMENTED;
2036 }
2037
2038 /****************************************************************
2039 ****************************************************************/
2040
2041 WERROR _netr_DsRGetDCName(struct pipes_struct *p,
2042                           struct netr_DsRGetDCName *r)
2043 {
2044         p->rng_fault_state = true;
2045         return WERR_NOT_SUPPORTED;
2046 }
2047
2048 /****************************************************************
2049 ****************************************************************/
2050
2051 NTSTATUS _netr_LogonGetCapabilities(struct pipes_struct *p,
2052                                     struct netr_LogonGetCapabilities *r)
2053 {
2054         struct netlogon_creds_CredentialState *creds;
2055         NTSTATUS status;
2056
2057         become_root();
2058         status = netr_creds_server_step_check(p, p->mem_ctx,
2059                                               r->in.computer_name,
2060                                               r->in.credential,
2061                                               r->out.return_authenticator,
2062                                               &creds);
2063         unbecome_root();
2064         if (!NT_STATUS_IS_OK(status)) {
2065                 return status;
2066         }
2067
2068         if (r->in.query_level != 1) {
2069                 return NT_STATUS_NOT_SUPPORTED;
2070         }
2071
2072         r->out.capabilities->server_capabilities = creds->negotiate_flags;
2073
2074         return NT_STATUS_OK;
2075 }
2076
2077 /****************************************************************
2078 ****************************************************************/
2079
2080 WERROR _netr_NETRLOGONSETSERVICEBITS(struct pipes_struct *p,
2081                                      struct netr_NETRLOGONSETSERVICEBITS *r)
2082 {
2083         p->rng_fault_state = true;
2084         return WERR_NOT_SUPPORTED;
2085 }
2086
2087 /****************************************************************
2088 ****************************************************************/
2089
2090 WERROR _netr_LogonGetTrustRid(struct pipes_struct *p,
2091                               struct netr_LogonGetTrustRid *r)
2092 {
2093         p->rng_fault_state = true;
2094         return WERR_NOT_SUPPORTED;
2095 }
2096
2097 /****************************************************************
2098 ****************************************************************/
2099
2100 WERROR _netr_NETRLOGONCOMPUTESERVERDIGEST(struct pipes_struct *p,
2101                                           struct netr_NETRLOGONCOMPUTESERVERDIGEST *r)
2102 {
2103         p->rng_fault_state = true;
2104         return WERR_NOT_SUPPORTED;
2105 }
2106
2107 /****************************************************************
2108 ****************************************************************/
2109
2110 WERROR _netr_NETRLOGONCOMPUTECLIENTDIGEST(struct pipes_struct *p,
2111                                           struct netr_NETRLOGONCOMPUTECLIENTDIGEST *r)
2112 {
2113         p->rng_fault_state = true;
2114         return WERR_NOT_SUPPORTED;
2115 }
2116
2117 /****************************************************************
2118 ****************************************************************/
2119
2120 WERROR _netr_DsRGetDCNameEx(struct pipes_struct *p,
2121                             struct netr_DsRGetDCNameEx *r)
2122 {
2123         p->rng_fault_state = true;
2124         return WERR_NOT_SUPPORTED;
2125 }
2126
2127 /****************************************************************
2128 ****************************************************************/
2129
2130 WERROR _netr_DsRGetSiteName(struct pipes_struct *p,
2131                             struct netr_DsRGetSiteName *r)
2132 {
2133         p->rng_fault_state = true;
2134         return WERR_NOT_SUPPORTED;
2135 }
2136
2137 /****************************************************************
2138 ****************************************************************/
2139
2140 NTSTATUS _netr_LogonGetDomainInfo(struct pipes_struct *p,
2141                                   struct netr_LogonGetDomainInfo *r)
2142 {
2143         p->rng_fault_state = true;
2144         return NT_STATUS_NOT_IMPLEMENTED;
2145 }
2146
2147 /****************************************************************
2148 ****************************************************************/
2149
2150 WERROR _netr_ServerPasswordGet(struct pipes_struct *p,
2151                                struct netr_ServerPasswordGet *r)
2152 {
2153         p->rng_fault_state = true;
2154         return WERR_NOT_SUPPORTED;
2155 }
2156
2157 /****************************************************************
2158 ****************************************************************/
2159
2160 WERROR _netr_NETRLOGONSENDTOSAM(struct pipes_struct *p,
2161                                 struct netr_NETRLOGONSENDTOSAM *r)
2162 {
2163         p->rng_fault_state = true;
2164         return WERR_NOT_SUPPORTED;
2165 }
2166
2167 /****************************************************************
2168 ****************************************************************/
2169
2170 WERROR _netr_DsRAddressToSitenamesW(struct pipes_struct *p,
2171                                     struct netr_DsRAddressToSitenamesW *r)
2172 {
2173         p->rng_fault_state = true;
2174         return WERR_NOT_SUPPORTED;
2175 }
2176
2177 /****************************************************************
2178 ****************************************************************/
2179
2180 WERROR _netr_DsRGetDCNameEx2(struct pipes_struct *p,
2181                              struct netr_DsRGetDCNameEx2 *r)
2182 {
2183         p->rng_fault_state = true;
2184         return WERR_NOT_SUPPORTED;
2185 }
2186
2187 /****************************************************************
2188 ****************************************************************/
2189
2190 WERROR _netr_NETRLOGONGETTIMESERVICEPARENTDOMAIN(struct pipes_struct *p,
2191                                                  struct netr_NETRLOGONGETTIMESERVICEPARENTDOMAIN *r)
2192 {
2193         p->rng_fault_state = true;
2194         return WERR_NOT_SUPPORTED;
2195 }
2196
2197 /****************************************************************
2198 ****************************************************************/
2199
2200 WERROR _netr_NetrEnumerateTrustedDomainsEx(struct pipes_struct *p,
2201                                            struct netr_NetrEnumerateTrustedDomainsEx *r)
2202 {
2203         p->rng_fault_state = true;
2204         return WERR_NOT_SUPPORTED;
2205 }
2206
2207 /****************************************************************
2208 ****************************************************************/
2209
2210 WERROR _netr_DsRAddressToSitenamesExW(struct pipes_struct *p,
2211                                       struct netr_DsRAddressToSitenamesExW *r)
2212 {
2213         p->rng_fault_state = true;
2214         return WERR_NOT_SUPPORTED;
2215 }
2216
2217 /****************************************************************
2218 ****************************************************************/
2219
2220 WERROR _netr_DsrGetDcSiteCoverageW(struct pipes_struct *p,
2221                                    struct netr_DsrGetDcSiteCoverageW *r)
2222 {
2223         p->rng_fault_state = true;
2224         return WERR_NOT_SUPPORTED;
2225 }
2226
2227 /****************************************************************
2228 ****************************************************************/
2229
2230 WERROR _netr_DsrEnumerateDomainTrusts(struct pipes_struct *p,
2231                                       struct netr_DsrEnumerateDomainTrusts *r)
2232 {
2233         p->rng_fault_state = true;
2234         return WERR_NOT_SUPPORTED;
2235 }
2236
2237 /****************************************************************
2238 ****************************************************************/
2239
2240 WERROR _netr_DsrDeregisterDNSHostRecords(struct pipes_struct *p,
2241                                          struct netr_DsrDeregisterDNSHostRecords *r)
2242 {
2243         p->rng_fault_state = true;
2244         return WERR_NOT_SUPPORTED;
2245 }
2246
2247 /****************************************************************
2248 ****************************************************************/
2249
2250 NTSTATUS _netr_ServerTrustPasswordsGet(struct pipes_struct *p,
2251                                        struct netr_ServerTrustPasswordsGet *r)
2252 {
2253         p->rng_fault_state = true;
2254         return NT_STATUS_NOT_IMPLEMENTED;
2255 }
2256
2257 /****************************************************************
2258 ****************************************************************/
2259
2260 WERROR _netr_DsRGetForestTrustInformation(struct pipes_struct *p,
2261                                           struct netr_DsRGetForestTrustInformation *r)
2262 {
2263         p->rng_fault_state = true;
2264         return WERR_NOT_SUPPORTED;
2265 }
2266
2267 /****************************************************************
2268 ****************************************************************/
2269
2270 static NTSTATUS fill_forest_trust_array(TALLOC_CTX *mem_ctx,
2271                                         struct lsa_ForestTrustInformation *info)
2272 {
2273         struct lsa_ForestTrustRecord *e;
2274         struct pdb_domain_info *dom_info;
2275         struct lsa_ForestTrustDomainInfo *domain_info;
2276
2277         dom_info = pdb_get_domain_info(mem_ctx);
2278         if (dom_info == NULL) {
2279                 return NT_STATUS_NO_MEMORY;
2280         }
2281
2282         info->count = 2;
2283         info->entries = talloc_array(info, struct lsa_ForestTrustRecord *, 2);
2284         if (info->entries == NULL) {
2285                 return NT_STATUS_NO_MEMORY;
2286         }
2287
2288         e = talloc(info, struct lsa_ForestTrustRecord);
2289         if (e == NULL) {
2290                 return NT_STATUS_NO_MEMORY;
2291         }
2292
2293         e->flags = 0;
2294         e->type = LSA_FOREST_TRUST_TOP_LEVEL_NAME;
2295         e->time = 0; /* so far always 0 in trces. */
2296         e->forest_trust_data.top_level_name.string = talloc_steal(info,
2297                                                                   dom_info->dns_forest);
2298
2299         info->entries[0] = e;
2300
2301         e = talloc(info, struct lsa_ForestTrustRecord);
2302         if (e == NULL) {
2303                 return NT_STATUS_NO_MEMORY;
2304         }
2305
2306         /* TODO: check if disabled and set flags accordingly */
2307         e->flags = 0;
2308         e->type = LSA_FOREST_TRUST_DOMAIN_INFO;
2309         e->time = 0; /* so far always 0 in traces. */
2310
2311         domain_info = &e->forest_trust_data.domain_info;
2312         domain_info->domain_sid = dom_sid_dup(info, &dom_info->sid);
2313
2314         domain_info->dns_domain_name.string = talloc_steal(info,
2315                                                            dom_info->dns_domain);
2316         domain_info->netbios_domain_name.string = talloc_steal(info,
2317                                                                dom_info->name);
2318
2319         info->entries[1] = e;
2320
2321         return NT_STATUS_OK;
2322 }
2323
2324 /****************************************************************
2325  _netr_GetForestTrustInformation
2326 ****************************************************************/
2327
2328 NTSTATUS _netr_GetForestTrustInformation(struct pipes_struct *p,
2329                                          struct netr_GetForestTrustInformation *r)
2330 {
2331         NTSTATUS status;
2332         struct netlogon_creds_CredentialState *creds;
2333         struct lsa_ForestTrustInformation *info, **info_ptr;
2334         struct loadparm_context *lp_ctx;
2335
2336         /* TODO: check server name */
2337
2338         lp_ctx = loadparm_init_s3(p->mem_ctx, loadparm_s3_helpers());
2339         if (lp_ctx == NULL) {
2340                 DEBUG(0, ("loadparm_init_s3 failed\n"));
2341                 return NT_STATUS_INTERNAL_ERROR;
2342         }
2343
2344         status = schannel_check_creds_state(p->mem_ctx, lp_ctx,
2345                                             r->in.computer_name,
2346                                             r->in.credential,
2347                                             r->out.return_authenticator,
2348                                             &creds);
2349         talloc_unlink(p->mem_ctx, lp_ctx);
2350         if (!NT_STATUS_IS_OK(status)) {
2351                 return status;
2352         }
2353
2354         if ((creds->secure_channel_type != SEC_CHAN_DNS_DOMAIN) &&
2355             (creds->secure_channel_type != SEC_CHAN_DOMAIN)) {
2356                 return NT_STATUS_NOT_IMPLEMENTED;
2357         }
2358
2359         info_ptr = talloc(p->mem_ctx, struct lsa_ForestTrustInformation *);
2360         if (!info_ptr) {
2361                 return NT_STATUS_NO_MEMORY;
2362         }
2363         info = talloc_zero(info_ptr, struct lsa_ForestTrustInformation);
2364         if (!info) {
2365                 return NT_STATUS_NO_MEMORY;
2366         }
2367
2368         status = fill_forest_trust_array(p->mem_ctx, info);
2369         if (!NT_STATUS_IS_OK(status)) {
2370                 return status;
2371         }
2372
2373         *info_ptr = info;
2374         r->out.forest_trust_info = info_ptr;
2375
2376         return NT_STATUS_OK;
2377 }
2378
2379 /****************************************************************
2380 ****************************************************************/
2381
2382 static NTSTATUS get_password_from_trustAuth(TALLOC_CTX *mem_ctx,
2383                                             const DATA_BLOB *trustAuth_blob,
2384                                             const DATA_BLOB *session_key,
2385                                             struct samr_Password *current_pw_enc,
2386                                             struct samr_Password *previous_pw_enc)
2387 {
2388         enum ndr_err_code ndr_err;
2389         struct trustAuthInOutBlob trustAuth;
2390
2391         ndr_err = ndr_pull_struct_blob_all(trustAuth_blob, mem_ctx, &trustAuth,
2392                                            (ndr_pull_flags_fn_t)ndr_pull_trustAuthInOutBlob);
2393         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2394                 return NT_STATUS_UNSUCCESSFUL;
2395         }
2396
2397
2398         if (trustAuth.count != 0 && trustAuth.current.count != 0 &&
2399             trustAuth.current.array[0].AuthType == TRUST_AUTH_TYPE_CLEAR) {
2400                 mdfour(previous_pw_enc->hash,
2401                        trustAuth.current.array[0].AuthInfo.clear.password,
2402                        trustAuth.current.array[0].AuthInfo.clear.size);
2403         } else {
2404                 return NT_STATUS_UNSUCCESSFUL;
2405         }
2406
2407         arcfour_crypt_blob(current_pw_enc->hash, sizeof(current_pw_enc->hash),
2408                            session_key);
2409
2410         if (trustAuth.previous.count != 0 &&
2411             trustAuth.previous.array[0].AuthType == TRUST_AUTH_TYPE_CLEAR) {
2412                 mdfour(previous_pw_enc->hash,
2413                        trustAuth.previous.array[0].AuthInfo.clear.password,
2414                        trustAuth.previous.array[0].AuthInfo.clear.size);
2415         } else {
2416                 mdfour(previous_pw_enc->hash, NULL, 0);
2417         }
2418         arcfour_crypt_blob(previous_pw_enc->hash, sizeof(previous_pw_enc->hash),
2419                            session_key);
2420
2421         return NT_STATUS_OK;
2422 }
2423
2424 /****************************************************************
2425  _netr_ServerGetTrustInfo
2426 ****************************************************************/
2427
2428 NTSTATUS _netr_ServerGetTrustInfo(struct pipes_struct *p,
2429                                   struct netr_ServerGetTrustInfo *r)
2430 {
2431         NTSTATUS status;
2432         struct netlogon_creds_CredentialState *creds;
2433         char *account_name;
2434         size_t account_name_last;
2435         bool trusted;
2436         struct netr_TrustInfo *trust_info;
2437         struct pdb_trusted_domain *td;
2438         DATA_BLOB trustAuth_blob;
2439         struct samr_Password *new_owf_enc;
2440         struct samr_Password *old_owf_enc;
2441         DATA_BLOB session_key;
2442         struct loadparm_context *lp_ctx;
2443
2444         lp_ctx = loadparm_init_s3(p->mem_ctx, loadparm_s3_helpers());
2445         if (lp_ctx == NULL) {
2446                 DEBUG(0, ("loadparm_init_s3 failed\n"));
2447                 return NT_STATUS_INTERNAL_ERROR;
2448         }
2449
2450         /* TODO: check server name */
2451
2452         status = schannel_check_creds_state(p->mem_ctx, lp_ctx,
2453                                             r->in.computer_name,
2454                                             r->in.credential,
2455                                             r->out.return_authenticator,
2456                                             &creds);
2457         talloc_unlink(p->mem_ctx, lp_ctx);
2458         if (!NT_STATUS_IS_OK(status)) {
2459                 return status;
2460         }
2461
2462         account_name = talloc_strdup(p->mem_ctx, r->in.account_name);
2463         if (account_name == NULL) {
2464                 return NT_STATUS_NO_MEMORY;
2465         }
2466
2467         account_name_last = strlen(account_name);
2468         if (account_name_last == 0) {
2469                 return NT_STATUS_INVALID_PARAMETER;
2470         }
2471         account_name_last--;
2472         if (account_name[account_name_last] == '.') {
2473                 account_name[account_name_last] = '\0';
2474         }
2475
2476         if ((creds->secure_channel_type != SEC_CHAN_DNS_DOMAIN) &&
2477             (creds->secure_channel_type != SEC_CHAN_DOMAIN)) {
2478                 trusted = false;
2479         } else {
2480                 trusted = true;
2481         }
2482
2483
2484         if (trusted) {
2485                 account_name_last = strlen(account_name);
2486                 if (account_name_last == 0) {
2487                         return NT_STATUS_INVALID_PARAMETER;
2488                 }
2489                 account_name_last--;
2490                 if (account_name[account_name_last] == '$') {
2491                         account_name[account_name_last] = '\0';
2492                 }
2493
2494                 status = pdb_get_trusted_domain(p->mem_ctx, account_name, &td);
2495                 if (!NT_STATUS_IS_OK(status)) {
2496                         return status;
2497                 }
2498
2499                 if (r->out.trust_info != NULL) {
2500                         trust_info = talloc_zero(p->mem_ctx, struct netr_TrustInfo);
2501                         if (trust_info == NULL) {
2502                                 return NT_STATUS_NO_MEMORY;
2503                         }
2504                         trust_info->count = 1;
2505
2506                         trust_info->data = talloc_array(trust_info, uint32_t, 1);
2507                         if (trust_info->data == NULL) {
2508                                 return NT_STATUS_NO_MEMORY;
2509                         }
2510                         trust_info->data[0] = td->trust_attributes;
2511
2512                         *r->out.trust_info = trust_info;
2513                 }
2514
2515                 new_owf_enc = talloc_zero(p->mem_ctx, struct samr_Password);
2516                 old_owf_enc = talloc_zero(p->mem_ctx, struct samr_Password);
2517                 if (new_owf_enc == NULL || old_owf_enc == NULL) {
2518                         return NT_STATUS_NO_MEMORY;
2519                 }
2520
2521 /* TODO: which trustAuth shall we use if we have in/out trust or do they have to
2522  * be equal ? */
2523                 if (td->trust_direction & NETR_TRUST_FLAG_INBOUND) {
2524                         trustAuth_blob = td->trust_auth_incoming;
2525                 } else if (td->trust_direction & NETR_TRUST_FLAG_OUTBOUND) {
2526                         trustAuth_blob = td->trust_auth_outgoing;
2527                 }
2528
2529                 session_key.data = creds->session_key;
2530                 session_key.length = sizeof(creds->session_key);
2531                 status = get_password_from_trustAuth(p->mem_ctx, &trustAuth_blob,
2532                                                      &session_key,
2533                                                      new_owf_enc, old_owf_enc);
2534
2535                 if (!NT_STATUS_IS_OK(status)) {
2536                         return status;
2537                 }
2538
2539                 r->out.new_owf_password = new_owf_enc;
2540                 r->out.old_owf_password = old_owf_enc;
2541         } else {
2542 /* TODO: look for machine password */
2543                 r->out.new_owf_password = NULL;
2544                 r->out.old_owf_password = NULL;
2545
2546                 return NT_STATUS_NOT_IMPLEMENTED;
2547         }
2548
2549         return NT_STATUS_OK;
2550 }
2551
2552 /****************************************************************
2553 ****************************************************************/
2554
2555 NTSTATUS _netr_Unused47(struct pipes_struct *p,
2556                         struct netr_Unused47 *r)
2557 {
2558         p->rng_fault_state = true;
2559         return NT_STATUS_NOT_IMPLEMENTED;
2560 }
2561
2562 /****************************************************************
2563 ****************************************************************/
2564
2565 NTSTATUS _netr_DsrUpdateReadOnlyServerDnsRecords(struct pipes_struct *p,
2566                                                  struct netr_DsrUpdateReadOnlyServerDnsRecords *r)
2567 {
2568         p->rng_fault_state = true;
2569         return NT_STATUS_NOT_IMPLEMENTED;
2570 }