reactos/ntoskrnl/se/semgr.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS kernel
   4  * FILE:            ntoskrnl/se/semgr.c
   5  * PURPOSE:         Security manager
   6  *
   7  * PROGRAMMERS:     No programmer listed.
   8  */
   9
  10 /* INCLUDES *******************************************************************/
  11
  12 #include <ntoskrnl.h>
  13 #define NDEBUG
  14 #include <debug.h>
  15
  16 /* GLOBALS ********************************************************************/
  17
  18 PSE_EXPORTS SeExports = NULL;
  19 SE_EXPORTS SepExports;
  20
  21 extern ULONG ExpInitializationPhase;
  22 extern ERESOURCE SepSubjectContextLock;
  23
  24 /* PRIVATE FUNCTIONS **********************************************************/
  25
  26 static BOOLEAN INIT_FUNCTION
  27 SepInitExports(VOID)
  28 {
  29     SepExports.SeCreateTokenPrivilege = SeCreateTokenPrivilege;
  30     SepExports.SeAssignPrimaryTokenPrivilege = SeAssignPrimaryTokenPrivilege;
  31     SepExports.SeLockMemoryPrivilege = SeLockMemoryPrivilege;
  32     SepExports.SeIncreaseQuotaPrivilege = SeIncreaseQuotaPrivilege;
  33     SepExports.SeUnsolicitedInputPrivilege = SeUnsolicitedInputPrivilege;
  34     SepExports.SeTcbPrivilege = SeTcbPrivilege;
  35     SepExports.SeSecurityPrivilege = SeSecurityPrivilege;
  36     SepExports.SeTakeOwnershipPrivilege = SeTakeOwnershipPrivilege;
  37     SepExports.SeLoadDriverPrivilege = SeLoadDriverPrivilege;
  38     SepExports.SeCreatePagefilePrivilege = SeCreatePagefilePrivilege;
  39     SepExports.SeIncreaseBasePriorityPrivilege = SeIncreaseBasePriorityPrivilege;
  40     SepExports.SeSystemProfilePrivilege = SeSystemProfilePrivilege;
  41     SepExports.SeSystemtimePrivilege = SeSystemtimePrivilege;
  42     SepExports.SeProfileSingleProcessPrivilege = SeProfileSingleProcessPrivilege;
  43     SepExports.SeCreatePermanentPrivilege = SeCreatePermanentPrivilege;
  44     SepExports.SeBackupPrivilege = SeBackupPrivilege;
  45     SepExports.SeRestorePrivilege = SeRestorePrivilege;
  46     SepExports.SeShutdownPrivilege = SeShutdownPrivilege;
  47     SepExports.SeDebugPrivilege = SeDebugPrivilege;
  48     SepExports.SeAuditPrivilege = SeAuditPrivilege;
  49     SepExports.SeSystemEnvironmentPrivilege = SeSystemEnvironmentPrivilege;
  50     SepExports.SeChangeNotifyPrivilege = SeChangeNotifyPrivilege;
  51     SepExports.SeRemoteShutdownPrivilege = SeRemoteShutdownPrivilege;
  52
  53     SepExports.SeNullSid = SeNullSid;
  54     SepExports.SeWorldSid = SeWorldSid;
  55     SepExports.SeLocalSid = SeLocalSid;
  56     SepExports.SeCreatorOwnerSid = SeCreatorOwnerSid;
  57     SepExports.SeCreatorGroupSid = SeCreatorGroupSid;
  58     SepExports.SeNtAuthoritySid = SeNtAuthoritySid;
  59     SepExports.SeDialupSid = SeDialupSid;
  60     SepExports.SeNetworkSid = SeNetworkSid;
  61     SepExports.SeBatchSid = SeBatchSid;
  62     SepExports.SeInteractiveSid = SeInteractiveSid;
  63     SepExports.SeLocalSystemSid = SeLocalSystemSid;
  64     SepExports.SeAliasAdminsSid = SeAliasAdminsSid;
  65     SepExports.SeAliasUsersSid = SeAliasUsersSid;
  66     SepExports.SeAliasGuestsSid = SeAliasGuestsSid;
  67     SepExports.SeAliasPowerUsersSid = SeAliasPowerUsersSid;
  68     SepExports.SeAliasAccountOpsSid = SeAliasAccountOpsSid;
  69     SepExports.SeAliasSystemOpsSid = SeAliasSystemOpsSid;
  70     SepExports.SeAliasPrintOpsSid = SeAliasPrintOpsSid;
  71     SepExports.SeAliasBackupOpsSid = SeAliasBackupOpsSid;
  72     SepExports.SeAuthenticatedUsersSid = SeAuthenticatedUsersSid;
  73     SepExports.SeRestrictedSid = SeRestrictedSid;
  74     SepExports.SeAnonymousLogonSid = SeAnonymousLogonSid;
  75
  76     SepExports.SeUndockPrivilege = SeUndockPrivilege;
  77     SepExports.SeSyncAgentPrivilege = SeSyncAgentPrivilege;
  78     SepExports.SeEnableDelegationPrivilege = SeEnableDelegationPrivilege;
  79
  80     SeExports = &SepExports;
  81     return TRUE;
  82 }
  83
  84
  85 BOOLEAN
  86 NTAPI
  87 SepInitializationPhase0(VOID)
  88 {
  89     PAGED_CODE();
  90
  91     ExpInitLuid();
  92     if (!SepInitSecurityIDs()) return FALSE;
  93     if (!SepInitDACLs()) return FALSE;
  94     if (!SepInitSDs()) return FALSE;
  95     SepInitPrivileges();
  96     if (!SepInitExports()) return FALSE;
  97
  98     /* Initialize the subject context lock */
  99     ExInitializeResource(&SepSubjectContextLock);
 100
 101     /* Initialize token objects */
 102     SepInitializeTokenImplementation();
 103
 104     /* Clear impersonation info for the idle thread */
 105     PsGetCurrentThread()->ImpersonationInfo = NULL;
 106     PspClearCrossThreadFlag(PsGetCurrentThread(),
 107                             CT_ACTIVE_IMPERSONATION_INFO_BIT);
 108
 109     /* Initialize the boot token */
 110     ObInitializeFastReference(&PsGetCurrentProcess()->Token, NULL);
 111     ObInitializeFastReference(&PsGetCurrentProcess()->Token,
 112                               SepCreateSystemProcessToken());
 113     return TRUE;
 114 }
 115
 116 BOOLEAN
 117 NTAPI
 118 SepInitializationPhase1(VOID)
 119 {
 120     NTSTATUS Status;
 121     PAGED_CODE();
 122
 123     /* Insert the system token into the tree */
 124     Status = ObInsertObject((PVOID)(PsGetCurrentProcess()->Token.Value &
 125                                     ~MAX_FAST_REFS),
 126                             NULL,
 127                             0,
 128                             0,
 129                             NULL,
 130                             NULL);
 131     ASSERT(NT_SUCCESS(Status));
 132
 133     /* FIXME: TODO \\ Security directory */
 134     return TRUE;
 135 }
 136
 137 BOOLEAN
 138 NTAPI
 139 SeInitSystem(VOID)
 140 {
 141     /* Check the initialization phase */
 142     switch (ExpInitializationPhase)
 143     {
 144         case 0:
 145
 146             /* Do Phase 0 */
 147             return SepInitializationPhase0();
 148
 149         case 1:
 150
 151             /* Do Phase 1 */
 152             return SepInitializationPhase1();
 153
 154         default:
 155
 156             /* Don't know any other phase! Bugcheck! */
 157             KeBugCheckEx(UNEXPECTED_INITIALIZATION_CALL,
 158                          0,
 159                          ExpInitializationPhase,
 160                          0,
 161                          0);
 162             return FALSE;
 163     }
 164 }
 165
 166 BOOLEAN
 167 NTAPI
 168 SeInitSRM(VOID)
 169 {
 170     OBJECT_ATTRIBUTES ObjectAttributes;
 171     UNICODE_STRING Name;
 172     HANDLE DirectoryHandle;
 173     HANDLE EventHandle;
 174     NTSTATUS Status;
 175
 176     /* Create '\Security' directory */
 177     RtlInitUnicodeString(&Name,
 178                          L"\\Security");
 179     InitializeObjectAttributes(&ObjectAttributes,
 180                                &Name,
 181                                OBJ_PERMANENT,
 182                                0,
 183                                NULL);
 184     Status = ZwCreateDirectoryObject(&DirectoryHandle,
 185                                      DIRECTORY_ALL_ACCESS,
 186                                      &ObjectAttributes);
 187     if (!NT_SUCCESS(Status))
 188     {
 189         DPRINT1("Failed to create 'Security' directory!\n");
 190         return FALSE;
 191     }
 192
 193     /* Create 'LSA_AUTHENTICATION_INITALIZED' event */
 194     RtlInitUnicodeString(&Name,
 195                          L"\\LSA_AUTHENTICATION_INITALIZED");
 196     InitializeObjectAttributes(&ObjectAttributes,
 197                                &Name,
 198                                OBJ_PERMANENT,
 199                                DirectoryHandle,
 200                                SePublicDefaultSd);
 201     Status = ZwCreateEvent(&EventHandle,
 202                            EVENT_ALL_ACCESS,
 203                            &ObjectAttributes,
 204                            SynchronizationEvent,
 205                            FALSE);
 206     if (!NT_SUCCESS(Status))
 207     {
 208         DPRINT1("Failed to create 'LSA_AUTHENTICATION_INITALIZED' event!\n");
 209         NtClose(DirectoryHandle);
 210         return FALSE;
 211     }
 212
 213     ZwClose(EventHandle);
 214     ZwClose(DirectoryHandle);
 215
 216     /* FIXME: Create SRM port and listener thread */
 217
 218     return TRUE;
 219 }
 220
 221 NTSTATUS
 222 NTAPI
 223 SeDefaultObjectMethod(IN PVOID Object,
 224                       IN SECURITY_OPERATION_CODE OperationType,
 225                       IN PSECURITY_INFORMATION SecurityInformation,
 226                       IN OUT PSECURITY_DESCRIPTOR SecurityDescriptor,
 227                       IN OUT PULONG ReturnLength OPTIONAL,
 228                       IN OUT PSECURITY_DESCRIPTOR *OldSecurityDescriptor,
 229                       IN POOL_TYPE PoolType,
 230                       IN PGENERIC_MAPPING GenericMapping)
 231 {
 232     PAGED_CODE();
 233
 234     /* Select the operation type */
 235     switch (OperationType)
 236     {
 237             /* Setting a new descriptor */
 238         case SetSecurityDescriptor:
 239
 240             /* Sanity check */
 241             ASSERT((PoolType == PagedPool) || (PoolType == NonPagedPool));
 242
 243             /* Set the information */
 244             return ObSetSecurityDescriptorInfo(Object,
 245                                                SecurityInformation,
 246                                                SecurityDescriptor,
 247                                                OldSecurityDescriptor,
 248                                                PoolType,
 249                                                GenericMapping);
 250
 251         case QuerySecurityDescriptor:
 252
 253             /* Query the information */
 254             return ObQuerySecurityDescriptorInfo(Object,
 255                                                  SecurityInformation,
 256                                                  SecurityDescriptor,
 257                                                  ReturnLength,
 258                                                  OldSecurityDescriptor);
 259
 260         case DeleteSecurityDescriptor:
 261
 262             /* De-assign it */
 263             return ObDeassignSecurity(OldSecurityDescriptor);
 264
 265         case AssignSecurityDescriptor:
 266
 267             /* Assign it */
 268             ObAssignObjectSecurityDescriptor(Object, SecurityDescriptor, PoolType);
 269             return STATUS_SUCCESS;
 270
 271         default:
 272
 273             /* Bug check */
 274             KeBugCheckEx(SECURITY_SYSTEM, 0, STATUS_INVALID_PARAMETER, 0, 0);
 275     }
 276
 277     /* Should never reach here */
 278     ASSERT(FALSE);
 279     return STATUS_SUCCESS;
 280 }
 281
 282
 283 static BOOLEAN
 284 SepSidInToken(PACCESS_TOKEN _Token,
 285               PSID Sid)
 286 {
 287     ULONG i;
 288     PTOKEN Token = (PTOKEN)_Token;
 289
 290     PAGED_CODE();
 291
 292     if (Token->UserAndGroupCount == 0)
 293     {
 294         return FALSE;
 295     }
 296
 297     for (i=0; i<Token->UserAndGroupCount; i++)
 298     {
 299         if (RtlEqualSid(Sid, Token->UserAndGroups[i].Sid))
 300         {
 301             if (Token->UserAndGroups[i].Attributes & SE_GROUP_ENABLED)
 302             {
 303                 return TRUE;
 304             }
 305
 306             return FALSE;
 307         }
 308     }
 309
 310     return FALSE;
 311 }
 312
 313
 314 VOID NTAPI
 315 SeQuerySecurityAccessMask(IN SECURITY_INFORMATION SecurityInformation,
 316                           OUT PACCESS_MASK DesiredAccess)
 317 {
 318     *DesiredAccess = 0;
 319
 320     if (SecurityInformation & (OWNER_SECURITY_INFORMATION |
 321                                GROUP_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION))
 322     {
 323         *DesiredAccess |= READ_CONTROL;
 324     }
 325     if (SecurityInformation & SACL_SECURITY_INFORMATION)
 326     {
 327         *DesiredAccess |= ACCESS_SYSTEM_SECURITY;
 328     }
 329 }
 330
 331 VOID NTAPI
 332 SeSetSecurityAccessMask(IN SECURITY_INFORMATION SecurityInformation,
 333                         OUT PACCESS_MASK DesiredAccess)
 334 {
 335     *DesiredAccess = 0;
 336
 337     if (SecurityInformation & (OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION))
 338     {
 339         *DesiredAccess |= WRITE_OWNER;
 340     }
 341     if (SecurityInformation & DACL_SECURITY_INFORMATION)
 342     {
 343         *DesiredAccess |= WRITE_DAC;
 344     }
 345     if (SecurityInformation & SACL_SECURITY_INFORMATION)
 346     {
 347         *DesiredAccess |= ACCESS_SYSTEM_SECURITY;
 348     }
 349 }
 350
 351 /* PUBLIC FUNCTIONS ***********************************************************/
 352
 353 /*
 354  * @implemented
 355  */
 356 BOOLEAN NTAPI
 357 SeAccessCheck(IN PSECURITY_DESCRIPTOR SecurityDescriptor,
 358               IN PSECURITY_SUBJECT_CONTEXT SubjectSecurityContext,
 359               IN BOOLEAN SubjectContextLocked,
 360               IN ACCESS_MASK DesiredAccess,
 361               IN ACCESS_MASK PreviouslyGrantedAccess,
 362               OUT PPRIVILEGE_SET* Privileges,
 363               IN PGENERIC_MAPPING GenericMapping,
 364               IN KPROCESSOR_MODE AccessMode,
 365               OUT PACCESS_MASK GrantedAccess,
 366               OUT PNTSTATUS AccessStatus)
 367 {
 368     LUID_AND_ATTRIBUTES Privilege;
 369     ACCESS_MASK CurrentAccess, AccessMask;
 370     PACCESS_TOKEN Token;
 371     ULONG i;
 372     PACL Dacl;
 373     BOOLEAN Present;
 374     BOOLEAN Defaulted;
 375     PACE CurrentAce;
 376     PSID Sid;
 377     NTSTATUS Status;
 378     PAGED_CODE();
 379
 380     /* Check if this is kernel mode */
 381     if (AccessMode == KernelMode)
 382     {
 383         /* Check if kernel wants everything */
 384         if (DesiredAccess & MAXIMUM_ALLOWED)
 385         {
 386             /* Give it */
 387             *GrantedAccess = GenericMapping->GenericAll;
 388             *GrantedAccess |= (DesiredAccess &~ MAXIMUM_ALLOWED);
 389             *GrantedAccess |= PreviouslyGrantedAccess;
 390         }
 391         else
 392         {
 393             /* Give the desired and previous access */
 394             *GrantedAccess = DesiredAccess | PreviouslyGrantedAccess;
 395         }
 396
 397         /* Success */
 398         *AccessStatus = STATUS_SUCCESS;
 399         return TRUE;
 400     }
 401
 402     /* Check if we didn't get an SD */
 403     if (!SecurityDescriptor)
 404     {
 405         /* Automatic failure */
 406         *AccessStatus = STATUS_ACCESS_DENIED;
 407         return FALSE;
 408     }
 409
 410     /* Check for invalid impersonation */
 411     if ((SubjectSecurityContext->ClientToken) &&
 412         (SubjectSecurityContext->ImpersonationLevel < SecurityImpersonation))
 413     {
 414         *AccessStatus = STATUS_BAD_IMPERSONATION_LEVEL;
 415         return FALSE;
 416     }
 417
 418     /* Check for no access desired */
 419     if (!DesiredAccess)
 420     {
 421         /* Check if we had no previous access */
 422         if (!PreviouslyGrantedAccess)
 423         {
 424             /* Then there's nothing to give */
 425             *AccessStatus = STATUS_ACCESS_DENIED;
 426             return FALSE;
 427         }
 428
 429         /* Return the previous access only */
 430         *GrantedAccess = PreviouslyGrantedAccess;
 431         *AccessStatus = STATUS_SUCCESS;
 432         *Privileges = NULL;
 433         return TRUE;
 434     }
 435
 436     /* Acquire the lock if needed */
 437     if (!SubjectContextLocked) SeLockSubjectContext(SubjectSecurityContext);
 438
 439     /* Map given accesses */
 440     RtlMapGenericMask(&DesiredAccess, GenericMapping);
 441     if (PreviouslyGrantedAccess)
 442         RtlMapGenericMask(&PreviouslyGrantedAccess, GenericMapping);
 443
 444
 445
 446     CurrentAccess = PreviouslyGrantedAccess;
 447
 448
 449
 450     Token = SubjectSecurityContext->ClientToken ?
 451     SubjectSecurityContext->ClientToken : SubjectSecurityContext->PrimaryToken;
 452
 453     /* Get the DACL */
 454     Status = RtlGetDaclSecurityDescriptor(SecurityDescriptor,
 455                                           &Present,
 456                                           &Dacl,
 457                                           &Defaulted);
 458     if (!NT_SUCCESS(Status))
 459     {
 460         if (SubjectContextLocked == FALSE)
 461         {
 462             SeUnlockSubjectContext(SubjectSecurityContext);
 463         }
 464
 465         *AccessStatus = Status;
 466         return FALSE;
 467     }
 468
 469     /* RULE 1: Grant desired access if the object is unprotected */
 470     if (Present == TRUE && Dacl == NULL)
 471     {
 472         if (SubjectContextLocked == FALSE)
 473         {
 474             SeUnlockSubjectContext(SubjectSecurityContext);
 475         }
 476
 477         *GrantedAccess = DesiredAccess;
 478         *AccessStatus = STATUS_SUCCESS;
 479         return TRUE;
 480     }
 481
 482     CurrentAccess = PreviouslyGrantedAccess;
 483
 484     /* RULE 2: Check token for 'take ownership' privilege */
 485     Privilege.Luid = SeTakeOwnershipPrivilege;
 486     Privilege.Attributes = SE_PRIVILEGE_ENABLED;
 487
 488     if (SepPrivilegeCheck(Token,
 489                           &Privilege,
 490                           1,
 491                           PRIVILEGE_SET_ALL_NECESSARY,
 492                           AccessMode))
 493     {
 494         CurrentAccess |= WRITE_OWNER;
 495         if ((DesiredAccess & ~VALID_INHERIT_FLAGS) ==
 496             (CurrentAccess & ~VALID_INHERIT_FLAGS))
 497         {
 498             if (SubjectContextLocked == FALSE)
 499             {
 500                 SeUnlockSubjectContext(SubjectSecurityContext);
 501             }
 502
 503             *GrantedAccess = CurrentAccess;
 504             *AccessStatus = STATUS_SUCCESS;
 505             return TRUE;
 506         }
 507     }
 508
 509     /* RULE 3: Check whether the token is the owner */
 510     Status = RtlGetOwnerSecurityDescriptor(SecurityDescriptor,
 511                                            &Sid,
 512                                            &Defaulted);
 513     if (!NT_SUCCESS(Status))
 514     {
 515         DPRINT1("RtlGetOwnerSecurityDescriptor() failed (Status %lx)\n", Status);
 516         if (SubjectContextLocked == FALSE)
 517         {
 518             SeUnlockSubjectContext(SubjectSecurityContext);
 519         }
 520
 521         *AccessStatus = Status;
 522         return FALSE;
 523     }
 524
 525     if (Sid && SepSidInToken(Token, Sid))
 526     {
 527         CurrentAccess |= (READ_CONTROL | WRITE_DAC);
 528         if ((DesiredAccess & ~VALID_INHERIT_FLAGS) ==
 529             (CurrentAccess & ~VALID_INHERIT_FLAGS))
 530         {
 531             if (SubjectContextLocked == FALSE)
 532             {
 533                 SeUnlockSubjectContext(SubjectSecurityContext);
 534             }
 535
 536             *GrantedAccess = CurrentAccess;
 537             *AccessStatus = STATUS_SUCCESS;
 538             return TRUE;
 539         }
 540     }
 541
 542     /* Fail if DACL is absent */
 543     if (Present == FALSE)
 544     {
 545         if (SubjectContextLocked == FALSE)
 546         {
 547             SeUnlockSubjectContext(SubjectSecurityContext);
 548         }
 549
 550         *GrantedAccess = 0;
 551         *AccessStatus = STATUS_ACCESS_DENIED;
 552         return FALSE;
 553     }
 554
 555     /* RULE 4: Grant rights according to the DACL */
 556     CurrentAce = (PACE)(Dacl + 1);
 557     for (i = 0; i < Dacl->AceCount; i++)
 558     {
 559         Sid = (PSID)(CurrentAce + 1);
 560         if (CurrentAce->Header.AceType == ACCESS_DENIED_ACE_TYPE)
 561         {
 562             if (SepSidInToken(Token, Sid))
 563             {
 564                 if (SubjectContextLocked == FALSE)
 565                 {
 566                     SeUnlockSubjectContext(SubjectSecurityContext);
 567                 }
 568
 569                 *GrantedAccess = 0;
 570                 *AccessStatus = STATUS_ACCESS_DENIED;
 571                 return FALSE;
 572             }
 573         }
 574
 575         else if (CurrentAce->Header.AceType == ACCESS_ALLOWED_ACE_TYPE)
 576         {
 577             if (SepSidInToken(Token, Sid))
 578             {
 579                 AccessMask = CurrentAce->AccessMask;
 580                 RtlMapGenericMask(&AccessMask, GenericMapping);
 581                 CurrentAccess |= AccessMask;
 582             }
 583         }
 584         else
 585         {
 586             DPRINT1("Unknown Ace type 0x%lx\n", CurrentAce->Header.AceType);
 587         }
 588         CurrentAce = (PACE)((ULONG_PTR)CurrentAce + CurrentAce->Header.AceSize);
 589     }
 590
 591     if (SubjectContextLocked == FALSE)
 592     {
 593         SeUnlockSubjectContext(SubjectSecurityContext);
 594     }
 595
 596     DPRINT("CurrentAccess %08lx\n DesiredAccess %08lx\n",
 597            CurrentAccess, DesiredAccess);
 598
 599     *GrantedAccess = CurrentAccess & DesiredAccess;
 600
 601     if (DesiredAccess & MAXIMUM_ALLOWED)
 602     {
 603         *GrantedAccess = CurrentAccess;
 604         *AccessStatus = STATUS_SUCCESS;
 605         return TRUE;
 606     }
 607     else if ((*GrantedAccess & ~VALID_INHERIT_FLAGS) ==
 608              (DesiredAccess & ~VALID_INHERIT_FLAGS))
 609     {
 610         *AccessStatus = STATUS_SUCCESS;
 611         return TRUE;
 612     }
 613     else
 614     {
 615         DPRINT1("Denying access for caller: granted 0x%lx, desired 0x%lx (generic mapping %p)\n",
 616                 *GrantedAccess, DesiredAccess, GenericMapping);
 617         *AccessStatus = STATUS_ACCESS_DENIED;
 618         return FALSE;
 619     }
 620 }
 621
 622 /* SYSTEM CALLS ***************************************************************/
 623
 624 /*
 625  * @implemented
 626  */
 627 NTSTATUS
 628 NTAPI
 629 NtAccessCheck(IN PSECURITY_DESCRIPTOR SecurityDescriptor,
 630               IN HANDLE TokenHandle,
 631               IN ACCESS_MASK DesiredAccess,
 632               IN PGENERIC_MAPPING GenericMapping,
 633               OUT PPRIVILEGE_SET PrivilegeSet OPTIONAL,
 634               IN OUT PULONG PrivilegeSetLength,
 635               OUT PACCESS_MASK GrantedAccess,
 636               OUT PNTSTATUS AccessStatus)
 637 {
 638     SECURITY_SUBJECT_CONTEXT SubjectSecurityContext;
 639     KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
 640     PTOKEN Token;
 641     NTSTATUS Status;
 642     PAGED_CODE();
 643
 644     /* Check if this is kernel mode */
 645     if (PreviousMode == KernelMode)
 646     {
 647         /* Check if kernel wants everything */
 648         if (DesiredAccess & MAXIMUM_ALLOWED)
 649         {
 650             /* Give it */
 651             *GrantedAccess = GenericMapping->GenericAll;
 652             *GrantedAccess |= (DesiredAccess &~ MAXIMUM_ALLOWED);
 653         }
 654         else
 655         {
 656             /* Just give the desired access */
 657             *GrantedAccess = DesiredAccess;
 658         }
 659
 660         /* Success */
 661         *AccessStatus = STATUS_SUCCESS;
 662         return STATUS_SUCCESS;
 663     }
 664
 665     /* Reference the token */
 666     Status = ObReferenceObjectByHandle(TokenHandle,
 667                                        TOKEN_QUERY,
 668                                        SepTokenObjectType,
 669                                        PreviousMode,
 670                                        (PVOID*)&Token,
 671                                        NULL);
 672     if (!NT_SUCCESS(Status))
 673     {
 674         DPRINT1("Failed to reference token (Status %lx)\n", Status);
 675         return Status;
 676     }
 677
 678     /* Check token type */
 679     if (Token->TokenType != TokenImpersonation)
 680     {
 681         DPRINT1("No impersonation token\n");
 682         ObDereferenceObject(Token);
 683         return STATUS_ACCESS_DENIED;
 684     }
 685
 686     /* Set up the subject context, and lock it */
 687     SubjectSecurityContext.ClientToken = Token;
 688     SubjectSecurityContext.ImpersonationLevel = Token->ImpersonationLevel;
 689     SubjectSecurityContext.PrimaryToken = NULL;
 690     SubjectSecurityContext.ProcessAuditId = NULL;
 691     SeLockSubjectContext(&SubjectSecurityContext);
 692
 693     /* Now perform the access check */
 694     SeAccessCheck(SecurityDescriptor,
 695                   &SubjectSecurityContext,
 696                   TRUE,
 697                   DesiredAccess,
 698                   0,
 699                   &PrivilegeSet, //FIXME
 700                   GenericMapping,
 701                   PreviousMode,
 702                   GrantedAccess,
 703                   AccessStatus);
 704
 705     /* Unlock subject context and dereference the token */
 706     SeUnlockSubjectContext(&SubjectSecurityContext);
 707     ObDereferenceObject(Token);
 708
 709     /* Check succeeded */
 710     return STATUS_SUCCESS;
 711 }
 712
 713
 714 NTSTATUS
 715 NTAPI
 716 NtAccessCheckByType(IN PSECURITY_DESCRIPTOR SecurityDescriptor,
 717                     IN PSID PrincipalSelfSid,
 718                     IN HANDLE ClientToken,
 719                     IN ACCESS_MASK DesiredAccess,
 720                     IN POBJECT_TYPE_LIST ObjectTypeList,
 721                     IN ULONG ObjectTypeLength,
 722                     IN PGENERIC_MAPPING GenericMapping,
 723                     IN PPRIVILEGE_SET PrivilegeSet,
 724                     IN ULONG PrivilegeSetLength,
 725                     OUT PACCESS_MASK GrantedAccess,
 726                     OUT PNTSTATUS AccessStatus)
 727 {
 728     UNIMPLEMENTED;
 729     return STATUS_NOT_IMPLEMENTED;
 730 }
 731
 732 NTSTATUS
 733 NTAPI
 734 NtAccessCheckByTypeAndAuditAlarm(IN PUNICODE_STRING SubsystemName,
 735                                  IN HANDLE HandleId,
 736                                  IN PUNICODE_STRING ObjectTypeName,
 737                                  IN PUNICODE_STRING ObjectName,
 738                                  IN PSECURITY_DESCRIPTOR SecurityDescriptor,
 739                                  IN PSID PrincipalSelfSid,
 740                                  IN ACCESS_MASK DesiredAccess,
 741                                  IN AUDIT_EVENT_TYPE AuditType,
 742                                  IN ULONG Flags,
 743                                  IN POBJECT_TYPE_LIST ObjectTypeList,
 744                                  IN ULONG ObjectTypeLength,
 745                                  IN PGENERIC_MAPPING GenericMapping,
 746                                  IN BOOLEAN ObjectCreation,
 747                                  OUT PACCESS_MASK GrantedAccess,
 748                                  OUT PNTSTATUS AccessStatus,
 749                                  OUT PBOOLEAN GenerateOnClose)
 750 {
 751     UNIMPLEMENTED;
 752     return STATUS_NOT_IMPLEMENTED;
 753 }
 754
 755 NTSTATUS
 756 NTAPI
 757 NtAccessCheckByTypeResultList(IN PSECURITY_DESCRIPTOR SecurityDescriptor,
 758                               IN PSID PrincipalSelfSid,
 759                               IN HANDLE ClientToken,
 760                               IN ACCESS_MASK DesiredAccess,
 761                               IN POBJECT_TYPE_LIST ObjectTypeList,
 762                               IN ULONG ObjectTypeLength,
 763                               IN PGENERIC_MAPPING GenericMapping,
 764                               IN PPRIVILEGE_SET PrivilegeSet,
 765                               IN ULONG PrivilegeSetLength,
 766                               OUT PACCESS_MASK GrantedAccess,
 767                               OUT PNTSTATUS AccessStatus)
 768 {
 769     UNIMPLEMENTED;
 770     return STATUS_NOT_IMPLEMENTED;
 771 }
 772
 773 NTSTATUS
 774 NTAPI
 775 NtAccessCheckByTypeResultListAndAuditAlarm(IN PUNICODE_STRING SubsystemName,
 776                                            IN HANDLE HandleId,
 777                                            IN PUNICODE_STRING ObjectTypeName,
 778                                            IN PUNICODE_STRING ObjectName,
 779                                            IN PSECURITY_DESCRIPTOR SecurityDescriptor,
 780                                            IN PSID PrincipalSelfSid,
 781                                            IN ACCESS_MASK DesiredAccess,
 782                                            IN AUDIT_EVENT_TYPE AuditType,
 783                                            IN ULONG Flags,
 784                                            IN POBJECT_TYPE_LIST ObjectTypeList,
 785                                            IN ULONG ObjectTypeLength,
 786                                            IN PGENERIC_MAPPING GenericMapping,
 787                                            IN BOOLEAN ObjectCreation,
 788                                            OUT PACCESS_MASK GrantedAccess,
 789                                            OUT PNTSTATUS AccessStatus,
 790                                            OUT PBOOLEAN GenerateOnClose)
 791 {
 792     UNIMPLEMENTED;
 793     return STATUS_NOT_IMPLEMENTED;
 794 }
 795
 796 NTSTATUS
 797 NTAPI
 798 NtAccessCheckByTypeResultListAndAuditAlarmByHandle(IN PUNICODE_STRING SubsystemName,
 799                                                    IN HANDLE HandleId,
 800                                                    IN HANDLE ClientToken,
 801                                                    IN PUNICODE_STRING ObjectTypeName,
 802                                                    IN PUNICODE_STRING ObjectName,
 803                                                    IN PSECURITY_DESCRIPTOR SecurityDescriptor,
 804                                                    IN PSID PrincipalSelfSid,
 805                                                    IN ACCESS_MASK DesiredAccess,
 806                                                    IN AUDIT_EVENT_TYPE AuditType,
 807                                                    IN ULONG Flags,
 808                                                    IN POBJECT_TYPE_LIST ObjectTypeList,
 809                                                    IN ULONG ObjectTypeLength,
 810                                                    IN PGENERIC_MAPPING GenericMapping,
 811                                                    IN BOOLEAN ObjectCreation,
 812                                                    OUT PACCESS_MASK GrantedAccess,
 813                                                    OUT PNTSTATUS AccessStatus,
 814                                                    OUT PBOOLEAN GenerateOnClose)
 815 {
 816     UNIMPLEMENTED;
 817     return STATUS_NOT_IMPLEMENTED;
 818 }
 819
 820 /* EOF */