2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS kernel
4 * FILE: ntoskrnl/se/priv.c
5 * PURPOSE: Security manager
7 * PROGRAMMERS: No programmer listed.
10 /* INCLUDES ******************************************************************/
16 #if defined (ALLOC_PRAGMA)
17 #pragma alloc_text(INIT, SepInitPrivileges)
20 /* GLOBALS ********************************************************************/
22 LUID SeCreateTokenPrivilege
;
23 LUID SeAssignPrimaryTokenPrivilege
;
24 LUID SeLockMemoryPrivilege
;
25 LUID SeIncreaseQuotaPrivilege
;
26 LUID SeUnsolicitedInputPrivilege
;
28 LUID SeSecurityPrivilege
;
29 LUID SeTakeOwnershipPrivilege
;
30 LUID SeLoadDriverPrivilege
;
31 LUID SeCreatePagefilePrivilege
;
32 LUID SeIncreaseBasePriorityPrivilege
;
33 LUID SeSystemProfilePrivilege
;
34 LUID SeSystemtimePrivilege
;
35 LUID SeProfileSingleProcessPrivilege
;
36 LUID SeCreatePermanentPrivilege
;
37 LUID SeBackupPrivilege
;
38 LUID SeRestorePrivilege
;
39 LUID SeShutdownPrivilege
;
40 LUID SeDebugPrivilege
;
41 LUID SeAuditPrivilege
;
42 LUID SeSystemEnvironmentPrivilege
;
43 LUID SeChangeNotifyPrivilege
;
44 LUID SeRemoteShutdownPrivilege
;
45 LUID SeUndockPrivilege
;
46 LUID SeSyncAgentPrivilege
;
47 LUID SeEnableDelegationPrivilege
;
49 /* PRIVATE FUNCTIONS **********************************************************/
54 SepInitPrivileges (VOID
)
56 SeCreateTokenPrivilege
.LowPart
= SE_CREATE_TOKEN_PRIVILEGE
;
57 SeCreateTokenPrivilege
.HighPart
= 0;
58 SeAssignPrimaryTokenPrivilege
.LowPart
= SE_ASSIGNPRIMARYTOKEN_PRIVILEGE
;
59 SeAssignPrimaryTokenPrivilege
.HighPart
= 0;
60 SeLockMemoryPrivilege
.LowPart
= SE_LOCK_MEMORY_PRIVILEGE
;
61 SeLockMemoryPrivilege
.HighPart
= 0;
62 SeIncreaseQuotaPrivilege
.LowPart
= SE_INCREASE_QUOTA_PRIVILEGE
;
63 SeIncreaseQuotaPrivilege
.HighPart
= 0;
64 SeUnsolicitedInputPrivilege
.LowPart
= SE_UNSOLICITED_INPUT_PRIVILEGE
;
65 SeUnsolicitedInputPrivilege
.HighPart
= 0;
66 SeTcbPrivilege
.LowPart
= SE_TCB_PRIVILEGE
;
67 SeTcbPrivilege
.HighPart
= 0;
68 SeSecurityPrivilege
.LowPart
= SE_SECURITY_PRIVILEGE
;
69 SeSecurityPrivilege
.HighPart
= 0;
70 SeTakeOwnershipPrivilege
.LowPart
= SE_TAKE_OWNERSHIP_PRIVILEGE
;
71 SeTakeOwnershipPrivilege
.HighPart
= 0;
72 SeLoadDriverPrivilege
.LowPart
= SE_LOAD_DRIVER_PRIVILEGE
;
73 SeLoadDriverPrivilege
.HighPart
= 0;
74 SeSystemProfilePrivilege
.LowPart
= SE_SYSTEM_PROFILE_PRIVILEGE
;
75 SeSystemProfilePrivilege
.HighPart
= 0;
76 SeSystemtimePrivilege
.LowPart
= SE_SYSTEMTIME_PRIVILEGE
;
77 SeSystemtimePrivilege
.HighPart
= 0;
78 SeProfileSingleProcessPrivilege
.LowPart
= SE_PROF_SINGLE_PROCESS_PRIVILEGE
;
79 SeProfileSingleProcessPrivilege
.HighPart
= 0;
80 SeIncreaseBasePriorityPrivilege
.LowPart
= SE_INC_BASE_PRIORITY_PRIVILEGE
;
81 SeIncreaseBasePriorityPrivilege
.HighPart
= 0;
82 SeCreatePagefilePrivilege
.LowPart
= SE_CREATE_PAGEFILE_PRIVILEGE
;
83 SeCreatePagefilePrivilege
.HighPart
= 0;
84 SeCreatePermanentPrivilege
.LowPart
= SE_CREATE_PERMANENT_PRIVILEGE
;
85 SeCreatePermanentPrivilege
.HighPart
= 0;
86 SeBackupPrivilege
.LowPart
= SE_BACKUP_PRIVILEGE
;
87 SeBackupPrivilege
.HighPart
= 0;
88 SeRestorePrivilege
.LowPart
= SE_RESTORE_PRIVILEGE
;
89 SeRestorePrivilege
.HighPart
= 0;
90 SeShutdownPrivilege
.LowPart
= SE_SHUTDOWN_PRIVILEGE
;
91 SeShutdownPrivilege
.HighPart
= 0;
92 SeDebugPrivilege
.LowPart
= SE_DEBUG_PRIVILEGE
;
93 SeDebugPrivilege
.HighPart
= 0;
94 SeAuditPrivilege
.LowPart
= SE_AUDIT_PRIVILEGE
;
95 SeAuditPrivilege
.HighPart
= 0;
96 SeSystemEnvironmentPrivilege
.LowPart
= SE_SYSTEM_ENVIRONMENT_PRIVILEGE
;
97 SeSystemEnvironmentPrivilege
.HighPart
= 0;
98 SeChangeNotifyPrivilege
.LowPart
= SE_CHANGE_NOTIFY_PRIVILEGE
;
99 SeChangeNotifyPrivilege
.HighPart
= 0;
100 SeRemoteShutdownPrivilege
.LowPart
= SE_REMOTE_SHUTDOWN_PRIVILEGE
;
101 SeRemoteShutdownPrivilege
.HighPart
= 0;
102 SeUndockPrivilege
.LowPart
= SE_UNDOCK_PRIVILEGE
;
103 SeUndockPrivilege
.HighPart
= 0;
104 SeSyncAgentPrivilege
.LowPart
= SE_SYNC_AGENT_PRIVILEGE
;
105 SeSyncAgentPrivilege
.HighPart
= 0;
106 SeEnableDelegationPrivilege
.LowPart
= SE_ENABLE_DELEGATION_PRIVILEGE
;
107 SeEnableDelegationPrivilege
.HighPart
= 0;
113 SepPrivilegeCheck (PTOKEN Token
,
114 PLUID_AND_ATTRIBUTES Privileges
,
115 ULONG PrivilegeCount
,
116 ULONG PrivilegeControl
,
117 KPROCESSOR_MODE PreviousMode
)
123 DPRINT ("SepPrivilegeCheck() called\n");
127 if (PreviousMode
== KernelMode
)
133 if (PrivilegeCount
> 0)
135 for (i
= 0; i
< Token
->PrivilegeCount
; i
++)
137 for (j
= 0; j
< PrivilegeCount
; j
++)
139 if (Token
->Privileges
[i
].Luid
.LowPart
== Privileges
[j
].Luid
.LowPart
&&
140 Token
->Privileges
[i
].Luid
.HighPart
== Privileges
[j
].Luid
.HighPart
)
142 DPRINT ("Found privilege\n");
143 DPRINT ("Privilege attributes %lx\n",
144 Token
->Privileges
[i
].Attributes
);
146 if (Token
->Privileges
[i
].Attributes
& SE_PRIVILEGE_ENABLED
)
148 Privileges
[j
].Attributes
|= SE_PRIVILEGE_USED_FOR_ACCESS
;
156 if ((PrivilegeControl
& PRIVILEGE_SET_ALL_NECESSARY
) &&
163 !(PrivilegeControl
& PRIVILEGE_SET_ALL_NECESSARY
))
173 SeCaptureLuidAndAttributesArray (PLUID_AND_ATTRIBUTES Src
,
174 ULONG PrivilegeCount
,
175 KPROCESSOR_MODE PreviousMode
,
176 PLUID_AND_ATTRIBUTES AllocatedMem
,
177 ULONG AllocatedLength
,
179 BOOLEAN CaptureIfKernel
,
180 PLUID_AND_ATTRIBUTES
* Dest
,
184 NTSTATUS Status
= STATUS_SUCCESS
;
188 if (PrivilegeCount
== 0)
192 return STATUS_SUCCESS
;
195 if (PreviousMode
== KernelMode
&& !CaptureIfKernel
)
198 return STATUS_SUCCESS
;
201 /* FIXME - check PrivilegeCount for a valid number so we don't
202 cause an integer overflow or exhaust system resources! */
204 BufferSize
= PrivilegeCount
* sizeof(LUID_AND_ATTRIBUTES
);
205 *Length
= ROUND_UP(BufferSize
, 4); /* round up to a 4 byte alignment */
207 /* probe the buffer */
208 if (PreviousMode
!= KernelMode
)
218 Status
= _SEH_GetExceptionCode();
222 if (!NT_SUCCESS(Status
))
228 /* allocate enough memory or check if the provided buffer is
229 large enough to hold the array */
230 if (AllocatedMem
!= NULL
)
232 if (AllocatedLength
< BufferSize
)
234 return STATUS_BUFFER_TOO_SMALL
;
237 *Dest
= AllocatedMem
;
241 *Dest
= ExAllocatePool(PoolType
,
246 return STATUS_INSUFFICIENT_RESOURCES
;
250 /* copy the array to the buffer */
259 Status
= _SEH_GetExceptionCode();
263 if (!NT_SUCCESS(Status
) && AllocatedMem
== NULL
)
273 SeReleaseLuidAndAttributesArray (PLUID_AND_ATTRIBUTES Privilege
,
274 KPROCESSOR_MODE PreviousMode
,
275 BOOLEAN CaptureIfKernel
)
279 if (Privilege
!= NULL
&&
280 (PreviousMode
!= KernelMode
|| CaptureIfKernel
))
282 ExFreePool(Privilege
);
286 /* PUBLIC FUNCTIONS ***********************************************************/
293 SeAppendPrivileges(PACCESS_STATE AccessState
,
294 PPRIVILEGE_SET Privileges
)
297 return STATUS_NOT_IMPLEMENTED
;
305 SeFreePrivileges(IN PPRIVILEGE_SET Privileges
)
314 SePrivilegeCheck (PPRIVILEGE_SET Privileges
,
315 PSECURITY_SUBJECT_CONTEXT SubjectContext
,
316 KPROCESSOR_MODE PreviousMode
)
318 PACCESS_TOKEN Token
= NULL
;
322 if (SubjectContext
->ClientToken
== NULL
)
324 Token
= SubjectContext
->PrimaryToken
;
328 Token
= SubjectContext
->ClientToken
;
329 if (SubjectContext
->ImpersonationLevel
< 2)
335 return SepPrivilegeCheck (Token
,
336 Privileges
->Privilege
,
337 Privileges
->PrivilegeCount
,
346 SeSinglePrivilegeCheck (IN LUID PrivilegeValue
,
347 IN KPROCESSOR_MODE PreviousMode
)
349 SECURITY_SUBJECT_CONTEXT SubjectContext
;
355 SeCaptureSubjectContext (&SubjectContext
);
357 Priv
.PrivilegeCount
= 1;
358 Priv
.Control
= PRIVILEGE_SET_ALL_NECESSARY
;
359 Priv
.Privilege
[0].Luid
= PrivilegeValue
;
360 Priv
.Privilege
[0].Attributes
= SE_PRIVILEGE_ENABLED
;
362 Result
= SePrivilegeCheck (&Priv
,
366 if (PreviousMode
!= KernelMode
)
369 SePrivilegedServiceAuditAlarm (0,
375 SeReleaseSubjectContext (&SubjectContext
);
380 /* SYSTEM CALLS ***************************************************************/
383 NtPrivilegeCheck (IN HANDLE ClientToken
,
384 IN PPRIVILEGE_SET RequiredPrivileges
,
387 PLUID_AND_ATTRIBUTES Privileges
;
389 ULONG PrivilegeCount
= 0;
390 ULONG PrivilegeControl
= 0;
393 KPROCESSOR_MODE PreviousMode
;
394 NTSTATUS Status
= STATUS_SUCCESS
;
398 PreviousMode
= KeGetPreviousMode();
400 /* probe the buffers */
401 if (PreviousMode
!= KernelMode
)
405 ProbeForWrite(RequiredPrivileges
,
406 FIELD_OFFSET(PRIVILEGE_SET
,
410 PrivilegeCount
= RequiredPrivileges
->PrivilegeCount
;
411 PrivilegeControl
= RequiredPrivileges
->Control
;
413 /* Check PrivilegeCount to avoid an integer overflow! */
414 if (FIELD_OFFSET(PRIVILEGE_SET
,
415 Privilege
[PrivilegeCount
]) /
416 sizeof(RequiredPrivileges
->Privilege
[0]) != PrivilegeCount
)
418 Status
= STATUS_INVALID_PARAMETER
;
422 /* probe all of the array */
423 ProbeForWrite(RequiredPrivileges
,
424 FIELD_OFFSET(PRIVILEGE_SET
,
425 Privilege
[PrivilegeCount
]),
428 ProbeForWriteBoolean(Result
);
432 Status
= _SEH_GetExceptionCode();
436 if (!NT_SUCCESS(Status
))
443 PrivilegeCount
= RequiredPrivileges
->PrivilegeCount
;
444 PrivilegeControl
= RequiredPrivileges
->Control
;
447 /* reference the token and make sure we're
448 not doing an anonymous impersonation */
449 Status
= ObReferenceObjectByHandle (ClientToken
,
455 if (!NT_SUCCESS(Status
))
460 if (Token
->TokenType
== TokenImpersonation
&&
461 Token
->ImpersonationLevel
< SecurityIdentification
)
463 ObDereferenceObject (Token
);
464 return STATUS_BAD_IMPERSONATION_LEVEL
;
467 /* capture the privileges */
468 Status
= SeCaptureLuidAndAttributesArray (RequiredPrivileges
->Privilege
,
477 if (!NT_SUCCESS(Status
))
479 ObDereferenceObject (Token
);
483 CheckResult
= SepPrivilegeCheck (Token
,
489 ObDereferenceObject (Token
);
491 /* return the array */
494 RtlCopyMemory(RequiredPrivileges
->Privilege
,
496 PrivilegeCount
* sizeof(LUID_AND_ATTRIBUTES
));
497 *Result
= CheckResult
;
498 Status
= STATUS_SUCCESS
;
502 Status
= _SEH_GetExceptionCode();
506 SeReleaseLuidAndAttributesArray (Privileges
,