sefuncs.h File Reference

#include <umtypes.h>

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Functions
NTKERNELAPI NTSTATUS NTAPI	SeCaptureSecurityDescriptor (_In_ PSECURITY_DESCRIPTOR OriginalSecurityDescriptor, _In_ KPROCESSOR_MODE CurrentMode, _In_ POOL_TYPE PoolType, _In_ BOOLEAN CaptureIfKernel, _Out_ PSECURITY_DESCRIPTOR *CapturedSecurityDescriptor)
	Captures a security descriptor.
NTKERNELAPI NTSTATUS NTAPI	SeReleaseSecurityDescriptor (_In_ PSECURITY_DESCRIPTOR CapturedSecurityDescriptor, _In_ KPROCESSOR_MODE CurrentMode, _In_ BOOLEAN CaptureIfKernelMode)
	Releases a captured security descriptor buffer.
NTKERNELAPI NTSTATUS NTAPI	SeCreateAccessState (_In_ PACCESS_STATE AccessState, _In_ PAUX_ACCESS_DATA AuxData, _In_ ACCESS_MASK Access, _In_ PGENERIC_MAPPING GenericMapping)
NTKERNELAPI VOID NTAPI	SeDeleteAccessState (_In_ PACCESS_STATE AccessState)
	Deletes an allocated access state from the memory.
NTKERNELAPI SECURITY_IMPERSONATION_LEVEL NTAPI	SeTokenImpersonationLevel (_In_ PACCESS_TOKEN Token)
	Gathers the security impersonation level of an access token.
_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI	NtAccessCheck (_In_ PSECURITY_DESCRIPTOR SecurityDescriptor, _In_ HANDLE ClientToken, _In_ ACCESS_MASK DesiredAccess, _In_ PGENERIC_MAPPING GenericMapping, _Out_writes_bytes_(*PrivilegeSetLength) PPRIVILEGE_SET PrivilegeSet, _Inout_ PULONG PrivilegeSetLength, _Out_ PACCESS_MASK GrantedAccess, _Out_ PNTSTATUS AccessStatus)
	Determines whether security access can be granted to a client that requests such access on an object.
_Must_inspect_result_ NTSYSCALLAPI NTSTATUS NTAPI	NtAccessCheckByType (_In_ PSECURITY_DESCRIPTOR SecurityDescriptor, _In_opt_ PSID PrincipalSelfSid, _In_ HANDLE ClientToken, _In_ ACCESS_MASK DesiredAccess, _In_reads_opt_(ObjectTypeListLength) POBJECT_TYPE_LIST ObjectTypeList, _In_ ULONG ObjectTypeListLength, _In_ PGENERIC_MAPPING GenericMapping, _Out_writes_bytes_(*PrivilegeSetLength) PPRIVILEGE_SET PrivilegeSet, _Inout_ PULONG PrivilegeSetLength, _Out_ PACCESS_MASK GrantedAccess, _Out_ PNTSTATUS AccessStatus)
	Determines whether security access can be granted to a client that requests such access on the object type list. The access is either granted or denied for the whole object hierarchy in the list.
_Must_inspect_result_ NTSYSCALLAPI NTSTATUS NTAPI	NtAccessCheckByTypeResultList (_In_ PSECURITY_DESCRIPTOR SecurityDescriptor, _In_opt_ PSID PrincipalSelfSid, _In_ HANDLE ClientToken, _In_ ACCESS_MASK DesiredAccess, _In_reads_(ObjectTypeListLength) POBJECT_TYPE_LIST ObjectTypeList, _In_ ULONG ObjectTypeListLength, _In_ PGENERIC_MAPPING GenericMapping, _Out_writes_bytes_(*PrivilegeSetLength) PPRIVILEGE_SET PrivilegeSet, _Inout_ PULONG PrivilegeSetLength, _Out_writes_(ObjectTypeListLength) PACCESS_MASK GrantedAccess, _Out_writes_(ObjectTypeListLength) PNTSTATUS AccessStatus)
	Determines whether security access can be granted to a client that requests such access on the object type list. Unlike the NtAccessCheckByType variant, this function will grant or deny access to each individual object and sub-object in the list.
_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI	NtAccessCheckAndAuditAlarm (_In_ PUNICODE_STRING SubsystemName, _In_opt_ PVOID HandleId, _In_ PUNICODE_STRING ObjectTypeName, _In_ PUNICODE_STRING ObjectName, _In_ PSECURITY_DESCRIPTOR SecurityDescriptor, _In_ ACCESS_MASK DesiredAccess, _In_ PGENERIC_MAPPING GenericMapping, _In_ BOOLEAN ObjectCreation, _Out_ PACCESS_MASK GrantedAccess, _Out_ PNTSTATUS AccessStatus, _Out_ PBOOLEAN GenerateOnClose)
	Raises an alarm audit message when a caller attempts to access an object and determine if the access can be made.
_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI	NtAdjustGroupsToken (_In_ HANDLE TokenHandle, _In_ BOOLEAN ResetToDefault, _In_opt_ PTOKEN_GROUPS NewState, _In_opt_ ULONG BufferLength, _Out_writes_bytes_to_opt_(BufferLength, *ReturnLength) PTOKEN_GROUPS PreviousState, _When_(PreviousState !=NULL, _Out_) PULONG ReturnLength)
_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI	NtAdjustPrivilegesToken (_In_ HANDLE TokenHandle, _In_ BOOLEAN DisableAllPrivileges, _In_opt_ PTOKEN_PRIVILEGES NewState, _In_ ULONG BufferLength, _Out_writes_bytes_to_opt_(BufferLength, *ReturnLength) PTOKEN_PRIVILEGES PreviousState, _When_(PreviousState !=NULL, _Out_) PULONG ReturnLength)
NTSYSCALLAPI NTSTATUS NTAPI	NtAllocateLocallyUniqueId (_Out_ LUID *LocallyUniqueId)
NTSYSCALLAPI NTSTATUS NTAPI	NtAllocateUuids (_Out_ PULARGE_INTEGER Time, _Out_ PULONG Range, _Out_ PULONG Sequence, _Out_ PUCHAR Seed)
NTSYSCALLAPI NTSTATUS NTAPI	NtCompareTokens (_In_ HANDLE FirstTokenHandle, _In_ HANDLE SecondTokenHandle, _Out_ PBOOLEAN Equal)
	Compares tokens if they're equal or not.
__kernel_entry NTSYSCALLAPI NTSTATUS NTAPI	NtCreateToken (_Out_ PHANDLE TokenHandle, _In_ ACCESS_MASK DesiredAccess, _In_opt_ POBJECT_ATTRIBUTES ObjectAttributes, _In_ TOKEN_TYPE TokenType, _In_ PLUID AuthenticationId, _In_ PLARGE_INTEGER ExpirationTime, _In_ PTOKEN_USER TokenUser, _In_ PTOKEN_GROUPS TokenGroups, _In_ PTOKEN_PRIVILEGES TokenPrivileges, _In_opt_ PTOKEN_OWNER TokenOwner, _In_ PTOKEN_PRIMARY_GROUP TokenPrimaryGroup, _In_opt_ PTOKEN_DEFAULT_DACL TokenDefaultDacl, _In_ PTOKEN_SOURCE TokenSource)
	Creates an access token.
_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI	NtDuplicateToken (_In_ HANDLE ExistingTokenHandle, _In_ ACCESS_MASK DesiredAccess, _In_opt_ POBJECT_ATTRIBUTES ObjectAttributes, _In_ BOOLEAN EffectiveOnly, _In_ TOKEN_TYPE TokenType, _Out_ PHANDLE NewTokenHandle)
	Duplicates a token.
_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI	NtFilterToken (_In_ HANDLE ExistingTokenHandle, _In_ ULONG Flags, _In_opt_ PTOKEN_GROUPS SidsToDisable, _In_opt_ PTOKEN_PRIVILEGES PrivilegesToDelete, _In_opt_ PTOKEN_GROUPS RestrictedSids, _Out_ PHANDLE NewTokenHandle)
	Creates an access token in a restricted form from the original existing token, that is, such action is called filtering.
NTSYSCALLAPI NTSTATUS NTAPI	NtImpersonateAnonymousToken (_In_ HANDLE ThreadHandle)
	Allows the calling thread to impersonate the system's anonymous logon token.
__kernel_entry NTSYSCALLAPI NTSTATUS NTAPI	NtOpenObjectAuditAlarm (_In_ PUNICODE_STRING SubsystemName, _In_opt_ PVOID HandleId, _In_ PUNICODE_STRING ObjectTypeName, _In_ PUNICODE_STRING ObjectName, _In_opt_ PSECURITY_DESCRIPTOR SecurityDescriptor, _In_ HANDLE ClientToken, _In_ ACCESS_MASK DesiredAccess, _In_ ACCESS_MASK GrantedAccess, _In_opt_ PPRIVILEGE_SET Privileges, _In_ BOOLEAN ObjectCreation, _In_ BOOLEAN AccessGranted, _Out_ PBOOLEAN GenerateOnClose)
	Raises an alarm audit message when an object is about to be opened.
NTSYSCALLAPI NTSTATUS NTAPI	NtOpenProcessTokenEx (_In_ HANDLE ProcessHandle, _In_ ACCESS_MASK DesiredAccess, _In_ ULONG HandleAttributes, _Out_ PHANDLE TokenHandle)
_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI	NtPrivilegeCheck (_In_ HANDLE ClientToken, _Inout_ PPRIVILEGE_SET RequiredPrivileges, _Out_ PBOOLEAN Result)
NTSYSCALLAPI NTSTATUS NTAPI	NtPrivilegedServiceAuditAlarm (_In_ PUNICODE_STRING SubsystemName, _In_ PUNICODE_STRING ServiceName, _In_ HANDLE ClientToken, _In_ PPRIVILEGE_SET Privileges, _In_ BOOLEAN AccessGranted)
__kernel_entry NTSYSCALLAPI NTSTATUS NTAPI	NtPrivilegeObjectAuditAlarm (_In_ PUNICODE_STRING SubsystemName, _In_opt_ PVOID HandleId, _In_ HANDLE ClientToken, _In_ ACCESS_MASK DesiredAccess, _In_ PPRIVILEGE_SET Privileges, _In_ BOOLEAN AccessGranted)
	_When_ (TokenInformationClass==TokenAccessInformation, _At_(TokenInformationLength, _In_range_(>=, sizeof(TOKEN_ACCESS_INFORMATION)))) _Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI NtQueryInformationToken(_In_ HANDLE TokenHandle
_In_ TOKEN_INFORMATION_CLASS	_Out_writes_bytes_to_opt_ (TokenInformationLength, *ReturnLength) PVOID TokenInformation
_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI	NtSetInformationToken (_In_ HANDLE TokenHandle, _In_ TOKEN_INFORMATION_CLASS TokenInformationClass, _In_reads_bytes_(TokenInformationLength) PVOID TokenInformation, _In_ ULONG TokenInformationLength)
	Sets (modifies) some specific information in regard of an access token. The calling thread must have specific access rights in order to modify token's information data.
NTSYSAPI NTSTATUS NTAPI	ZwAccessCheck (_In_ PSECURITY_DESCRIPTOR SecurityDescriptor, _In_ HANDLE ClientToken, _In_ ACCESS_MASK DesiredAccess, _In_ PGENERIC_MAPPING GenericMapping, _Out_writes_bytes_(*PrivilegeSetLength) PPRIVILEGE_SET PrivilegeSet, _Out_ PULONG PrivilegeSetLength, _Out_ PACCESS_MASK GrantedAccess, _Out_ PNTSTATUS AccessStatus)
NTSYSAPI NTSTATUS NTAPI	ZwAdjustGroupsToken (_In_ HANDLE TokenHandle, _In_ BOOLEAN ResetToDefault, _In_ PTOKEN_GROUPS NewState, _In_ ULONG BufferLength, _Out_opt_ PTOKEN_GROUPS PreviousState, _Out_ PULONG ReturnLength)
_Must_inspect_result_ NTSYSAPI NTSTATUS NTAPI	ZwAdjustPrivilegesToken (_In_ HANDLE TokenHandle, _In_ BOOLEAN DisableAllPrivileges, _In_opt_ PTOKEN_PRIVILEGES NewState, _In_ ULONG BufferLength, _Out_writes_bytes_to_opt_(BufferLength, *ReturnLength) PTOKEN_PRIVILEGES PreviousState, _When_(PreviousState !=NULL, _Out_) PULONG ReturnLength)
NTSYSAPI NTSTATUS NTAPI	ZwAllocateLocallyUniqueId (_Out_ LUID *LocallyUniqueId)
NTSYSAPI NTSTATUS NTAPI	ZwAllocateUuids (_Out_ PULARGE_INTEGER Time, _Out_ PULONG Range, _Out_ PULONG Sequence, _Out_ PUCHAR Seed)
NTSYSAPI NTSTATUS NTAPI	ZwCreateToken (_Out_ PHANDLE TokenHandle, _In_ ACCESS_MASK DesiredAccess, _In_ POBJECT_ATTRIBUTES ObjectAttributes, _In_ TOKEN_TYPE TokenType, _In_ PLUID AuthenticationId, _In_ PLARGE_INTEGER ExpirationTime, _In_ PTOKEN_USER TokenUser, _In_ PTOKEN_GROUPS TokenGroups, _In_ PTOKEN_PRIVILEGES TokenPrivileges, _In_ PTOKEN_OWNER TokenOwner, _In_ PTOKEN_PRIMARY_GROUP TokenPrimaryGroup, _In_ PTOKEN_DEFAULT_DACL TokenDefaultDacl, _In_ PTOKEN_SOURCE TokenSource)
	_IRQL_requires_max_ (PASSIVE_LEVEL) NTSYSAPI NTSTATUS NTAPI ZwDuplicateToken(_In_ HANDLE ExistingTokenHandle
	Queries information details about a security descriptor.
NTSYSAPI NTSTATUS NTAPI	ZwImpersonateAnonymousToken (_In_ HANDLE Thread)
NTSYSAPI NTSTATUS NTAPI	ZwOpenObjectAuditAlarm (_In_ PUNICODE_STRING SubsystemName, _In_ PVOID HandleId, _In_ PUNICODE_STRING ObjectTypeName, _In_ PUNICODE_STRING ObjectName, _In_ PSECURITY_DESCRIPTOR SecurityDescriptor, _In_ HANDLE ClientToken, _In_ ULONG DesiredAccess, _In_ ULONG GrantedAccess, _In_ PPRIVILEGE_SET Privileges, _In_ BOOLEAN ObjectCreation, _In_ BOOLEAN AccessGranted, _Out_ PBOOLEAN GenerateOnClose)
NTSYSAPI NTSTATUS NTAPI	ZwPrivilegeCheck (_In_ HANDLE ClientToken, _In_ PPRIVILEGE_SET RequiredPrivileges, _In_ PBOOLEAN Result)
NTSYSAPI NTSTATUS NTAPI	ZwPrivilegedServiceAuditAlarm (_In_ PUNICODE_STRING SubsystemName, _In_ PUNICODE_STRING ServiceName, _In_ HANDLE ClientToken, _In_ PPRIVILEGE_SET Privileges, _In_ BOOLEAN AccessGranted)
NTSYSAPI NTSTATUS NTAPI	ZwPrivilegeObjectAuditAlarm (_In_ PUNICODE_STRING SubsystemName, _In_ PVOID HandleId, _In_ HANDLE ClientToken, _In_ ULONG DesiredAccess, _In_ PPRIVILEGE_SET Privileges, _In_ BOOLEAN AccessGranted)
_In_ TOKEN_INFORMATION_CLASS	_Out_writes_bytes_to_opt_ (Length, *ResultLength) PVOID TokenInformation
NTSYSAPI NTSTATUS NTAPI	ZwSetInformationToken (_In_ HANDLE TokenHandle, _In_ TOKEN_INFORMATION_CLASS TokenInformationClass, _Out_ PVOID TokenInformation, _In_ ULONG TokenInformationLength)

Variables
_In_ TOKEN_INFORMATION_CLASS	TokenInformationClass
_In_ TOKEN_INFORMATION_CLASS _In_ ULONG	TokenInformationLength
_In_ TOKEN_INFORMATION_CLASS _In_ ULONG _Out_ PULONG	ReturnLength
_In_ ACCESS_MASK	DesiredAccess
_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES	ObjectAttributes
_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES _In_ BOOLEAN	EffectiveOnly
_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES _In_ BOOLEAN _In_ TOKEN_TYPE	TokenType
_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES _In_ BOOLEAN _In_ TOKEN_TYPE _Out_ PHANDLE	NewTokenHandle
_In_ ACCESS_MASK _Out_ PHANDLE	TokenHandle
_In_ ACCESS_MASK _In_ ULONG	HandleAttributes
_In_ TOKEN_INFORMATION_CLASS _In_ ULONG	Length
_In_ TOKEN_INFORMATION_CLASS _In_ ULONG _Out_ PULONG	ResultLength

Function Documentation

_IRQL_requires_max_()

_IRQL_requires_max_

(

PASSIVE_LEVEL

)

Queries information details about a security descriptor.

Computes the quota size of a security descriptor.

Assigns a security descriptor for a new object.

An extended function that assigns a security descriptor for a new object.

Frees a security descriptor.

An extended function that sets new information data to a security descriptor.

Modifies some information data about a security descriptor.

Parameters

[in]	SecurityInformation	Security information details to be queried from a security descriptor.
[out]	SecurityDescriptor	The returned security descriptor with security information data.
[in,out]	Length	The returned length of a security descriptor.
[in,out]	ObjectsSecurityDescriptor	The returned object security descriptor.

Returns

Returns STATUS_SUCCESS if the operations have been completed successfully and that the specific information about the security descriptor has been queried. STATUS_BUFFER_TOO_SMALL is returned if the buffer size is too small to contain the queried info about the security descriptor.

Parameters

[in]	Object	If specified, the function will use this arbitrary object that points to an object security descriptor.
[in]	SecurityInformation	Security information details to be set.
[in]	SecurityDescriptor	A security descriptor where its info is to be changed.
[in,out]	ObjectsSecurityDescriptor	The returned pointer to security descriptor objects.
[in]	PoolType	Pool type for the new security descriptor to allocate.
[in]	GenericMapping	The generic mapping of access rights masks.

Returns

See SeSetSecurityDescriptorInfoEx.

Parameters

[in]	Object	If specified, the function will use this arbitrary object that points to an object security descriptor.
[in]	SecurityInformation	Security information details to be set.
[in]	SecurityDescriptor	A security descriptor where its info is to be changed.
[in,out]	ObjectsSecurityDescriptor	The returned pointer to security descriptor objects.
[in]	AutoInheritFlags	Flags bitmask inheritation, influencing how the security descriptor can be inherited and if it can be in the first place.
[in]	PoolType	Pool type for the new security descriptor to allocate.
[in]	GenericMapping	The generic mapping of access rights masks.

Returns

Returns STATUS_SUCCESS if the operations have been completed without problems and that new info has been set to the security descriptor. STATUS_NO_SECURITY_ON_OBJECT is returned if the object does not have a security descriptor. STATUS_INSUFFICIENT_RESOURCES is returned if memory pool allocation for the new security descriptor with new info set has failed.

Parameters

[in]

SecurityDescriptor

A security descriptor to be freed from memory.

Returns

Returns STATUS_SUCCESS.

Parameters

[in]	_ParentDescriptor	A security descriptor of the parent object that is being created.
[in]	_ExplicitDescriptor	An explicit security descriptor that is applied to a new object.
[out]	NewDescriptor	The new allocated security descriptor.
[in]	ObjectType	The type of the new object.
[in]	IsDirectoryObject	Set this to TRUE if the newly created object is a directory object, otherwise set this to FALSE.
[in]	AutoInheritFlags	Automatic inheritance flags that influence how access control entries within ACLs from security descriptors are inherited.
[in]	SubjectContext	Security subject context of the new object.
[in]	GenericMapping	Generic mapping of access mask rights.
[in]	PoolType	This parameter is unused.

Returns

Returns STATUS_SUCCESS if the operations have been completed successfully and that the security descriptor has been assigned to the new object. STATUS_NO_TOKEN is returned if the caller hasn't supplied a valid argument to a security subject context. STATUS_INVALID_OWNER is returned if the caller hasn't supplied a parent descriptor that belongs to the main user (owner). STATUS_INVALID_PRIMARY_GROUP is returned by the same reason as with the previous NTSTATUS code. The two NTSTATUS codes are returned if the calling thread stated that the owner and/or group is defaulted to the parent descriptor (SEF_DEFAULT_OWNER_FROM_PARENT and/or SEF_DEFAULT_GROUP_FROM_PARENT respectively). STATUS_INSUFFICIENT_RESOURCES is returned if memory pool allocation for the descriptor buffer has failed. A failure NTSTATUS is returned otherwise.

Parameters

[in]	ParentDescriptor	A security descriptor of the parent object that is being created.
[in]	ExplicitDescriptor	An explicit security descriptor that is applied to a new object.
[out]	NewDescriptor	The new allocated security descriptor.
[in]	IsDirectoryObject	Set this to TRUE if the newly created object is a directory object, otherwise set this to FALSE.
[in]	SubjectContext	Security subject context of the new object.
[in]	GenericMapping	Generic mapping of access mask rights.
[in]	PoolType	This parameter is unused.

Returns

See SeAssignSecurityEx.

Parameters

[in]	SecurityDescriptor	A security descriptor.
[out]	QuotaInfoSize	The returned quota size of the given security descriptor to the caller. The function may return 0 to this parameter if the descriptor doesn't have a group or a discretionary access control list (DACL) even.

Returns

Returns STATUS_SUCCESS if the quota size of a security descriptor has been computed successfully. STATUS_UNKNOWN_REVISION is returned if the security descriptor has an invalid revision.

Definition at line 923 of file Messaging.c.

{
    PFLT_SERVER_PORT_OBJECT PortObject;
    NTSTATUS Status;
 
    /* The caller must allow at least one connection */
    if (MaxConnections == 0)
    {
        return STATUS_INVALID_PARAMETER;
    }
 
    /* The request must be for a kernel handle */
    if (!(ObjectAttributes->Attributes & OBJ_KERNEL_HANDLE))
    {
        return STATUS_INVALID_PARAMETER;
    }
 
    /*
     * Get rundown protection on the target to stop the owner
     * from unloading whilst this port object is open. It gets
     * removed in the FltpServerPortClose callback
     */
    Status = FltObjectReference(Filter);
    if (!NT_SUCCESS(Status))
    {
        return Status;
    }
 
    /* Create the server port object for this filter */
    Status = ObCreateObject(KernelMode,
                            ServerPortObjectType,
                            ObjectAttributes,
                            KernelMode,
                            NULL,
                            sizeof(FLT_SERVER_PORT_OBJECT),
                            0,
                            0,
                            (PVOID *)&PortObject);
    if (NT_SUCCESS(Status))
    {
        /* Zero out the struct */
        RtlZeroMemory(PortObject, sizeof(FLT_SERVER_PORT_OBJECT));
 
        /* Increment the ref count on the target filter */
        FltpObjectPointerReference((PFLT_OBJECT)Filter);
 
        /* Setup the filter port object */
        PortObject->Filter = Filter;
        PortObject->ConnectNotify = ConnectNotifyCallback;
        PortObject->DisconnectNotify = DisconnectNotifyCallback;
        PortObject->MessageNotify = MessageNotifyCallback;
        PortObject->Cookie = ServerPortCookie;
        PortObject->MaxConnections = MaxConnections;
 
        /* Insert the object */
        Status = ObInsertObject(PortObject,
                                NULL,
                                STANDARD_RIGHTS_ALL | FILE_READ_DATA,
                                0,
                                NULL,
                                (PHANDLE)ServerPort);
        if (NT_SUCCESS(Status))
        {
            /* Lock the connection list */
            ExAcquireFastMutex(&Filter->ConnectionList.mLock);
 
            /* Add the new port object to the connection list and increment the count */
            InsertTailList(&Filter->ConnectionList.mList, &PortObject->FilterLink);
            Filter->ConnectionList.mCount++;
 
            /* Unlock the connection list*/
            ExReleaseFastMutex(&Filter->ConnectionList.mLock);
        }
    }
 
    if (!NT_SUCCESS(Status))
    {
        /* Allow the filter to be cleaned up */
        FltObjectDereference(Filter);
    }
 
    return Status;
}

_Out_writes_bytes_to_opt_() [1/2]

_In_ TOKEN_INFORMATION_CLASS _Out_writes_bytes_to_opt_	(	Length	,
		*	ResultLength
	)

_Out_writes_bytes_to_opt_() [2/2]

_In_ TOKEN_INFORMATION_CLASS _Out_writes_bytes_to_opt_	(	TokenInformationLength	,
		*	ReturnLength
	)

_When_()

_When_	(	TokenInformationClass	= = TokenAccessInformation,
		_At_(TokenInformationLength, _In_range_(>=, sizeof(TOKEN_ACCESS_INFORMATION)))
	)

NtAccessCheck()

_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI NtAccessCheck	(	_In_ PSECURITY_DESCRIPTOR	SecurityDescriptor,
		_In_ HANDLE	ClientToken,
		_In_ ACCESS_MASK	DesiredAccess,
		_In_ PGENERIC_MAPPING	GenericMapping,
		_Out_writes_bytes_ *PrivilegeSetLength PPRIVILEGE_SET	PrivilegeSet,
		_Inout_ PULONG	PrivilegeSetLength,
		_Out_ PACCESS_MASK	GrantedAccess,
		_Out_ PNTSTATUS	AccessStatus
	)

Determines whether security access can be granted to a client that requests such access on an object.

Remarks

For more documentation details about the parameters and overall function behavior, see SepAccessCheck.

Definition at line 2214 of file accesschk.c.

{
    PAGED_CODE();
 
    /* Invoke the internal function to do the job */
    return SepAccessCheck(SecurityDescriptor,
                          ClientToken,
                          NULL,
                          DesiredAccess,
                          GenericMapping,
                          PrivilegeSet,
                          PrivilegeSetLength,
                          NULL,
                          0,
                          FALSE,
                          GrantedAccess,
                          AccessStatus);
}

Referenced by AccessCheck(), AccessCheckEmptyMappingTest(), and CheckTokenMembership().

NtAccessCheckAndAuditAlarm()

_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI NtAccessCheckAndAuditAlarm	(	_In_ PUNICODE_STRING	SubsystemName,
		_In_opt_ PVOID	HandleId,
		_In_ PUNICODE_STRING	ObjectTypeName,
		_In_ PUNICODE_STRING	ObjectName,
		_In_ PSECURITY_DESCRIPTOR	SecurityDescriptor,
		_In_ ACCESS_MASK	DesiredAccess,
		_In_ PGENERIC_MAPPING	GenericMapping,
		_In_ BOOLEAN	ObjectCreation,
		_Out_ PACCESS_MASK	GrantedAccess,
		_Out_ PNTSTATUS	AccessStatus,
		_Out_ PBOOLEAN	GenerateOnClose
	)

Raises an alarm audit message when a caller attempts to access an object and determine if the access can be made.

Parameters

[in]	SubsystemName	A Unicode string that points to a name of the subsystem.
[in]	HandleId	A handle to an ID that is used as identification instance for auditing.
[in]	ObjectTypeName	The name of the object type.
[in]	ObjectName	The object name.
[in]	SecurityDescriptor	A security descriptor.
[in]	DesiredAccess	The desired access rights masks requested by the caller.
[in]	GenericMapping	The generic mapping of access mask rights.
[in]	ObjectCreation	Set this to TRUE if the object has just been created.
[out]	GrantedAccess	Returns the granted access rights.
[out]	AccessStatus	Returns a NTSTATUS status code indicating whether access check can be granted or not.
[out]	GenerateOnClose	Returns TRUE if the function has generated a list of granted access rights and status codes on termination, FALSE otherwise.

Returns

See SepAccessCheckAndAuditAlarm.

Definition at line 2125 of file audit.c.

{
    /* Call the internal function */
    return SepAccessCheckAndAuditAlarm(SubsystemName,
                                       HandleId,
                                       NULL,
                                       ObjectTypeName,
                                       ObjectName,
                                       SecurityDescriptor,
                                       NULL,
                                       DesiredAccess,
                                       AuditEventObjectAccess,
                                       0,
                                       NULL,
                                       0,
                                       GenericMapping,
                                       GrantedAccess,
                                       AccessStatus,
                                       GenerateOnClose,
                                       FALSE);
}

NtAccessCheckByType()

_Must_inspect_result_ NTSYSCALLAPI NTSTATUS NTAPI NtAccessCheckByType	(	_In_ PSECURITY_DESCRIPTOR	SecurityDescriptor,
		_In_opt_ PSID	PrincipalSelfSid,
		_In_ HANDLE	ClientToken,
		_In_ ACCESS_MASK	DesiredAccess,
		_In_reads_opt_(ObjectTypeListLength) POBJECT_TYPE_LIST	ObjectTypeList,
		_In_ ULONG	ObjectTypeListLength,
		_In_ PGENERIC_MAPPING	GenericMapping,
		_Out_writes_bytes_ *PrivilegeSetLength PPRIVILEGE_SET	PrivilegeSet,
		_Inout_ PULONG	PrivilegeSetLength,
		_Out_ PACCESS_MASK	GrantedAccess,
		_Out_ PNTSTATUS	AccessStatus
	)

Determines whether security access can be granted to a client that requests such access on the object type list. The access is either granted or denied for the whole object hierarchy in the list.

Remarks

For more documentation details about the parameters and overall function behavior, see SepAccessCheck.

Definition at line 2254 of file accesschk.c.

{
    PAGED_CODE();
 
    /* Invoke the internal function to do the job */
    return SepAccessCheck(SecurityDescriptor,
                          ClientToken,
                          PrincipalSelfSid,
                          DesiredAccess,
                          GenericMapping,
                          PrivilegeSet,
                          PrivilegeSetLength,
                          ObjectTypeList,
                          ObjectTypeListLength,
                          FALSE,
                          GrantedAccess,
                          AccessStatus);
}

Referenced by AccessCheckByType(), AccessGrantedMultipleObjectsTests(), AccessGrantedNoDaclTests(), AccessGrantedTests(), DenyAccessTests(), and ParamsValidationTests().

NtAccessCheckByTypeResultList()

_Must_inspect_result_ NTSYSCALLAPI NTSTATUS NTAPI NtAccessCheckByTypeResultList	(	_In_ PSECURITY_DESCRIPTOR	SecurityDescriptor,
		_In_opt_ PSID	PrincipalSelfSid,
		_In_ HANDLE	ClientToken,
		_In_ ACCESS_MASK	DesiredAccess,
		_In_reads_(ObjectTypeListLength) POBJECT_TYPE_LIST	ObjectTypeList,
		_In_ ULONG	ObjectTypeListLength,
		_In_ PGENERIC_MAPPING	GenericMapping,
		_Out_writes_bytes_ *PrivilegeSetLength PPRIVILEGE_SET	PrivilegeSet,
		_Inout_ PULONG	PrivilegeSetLength,
		_Out_writes_(ObjectTypeListLength) PACCESS_MASK	GrantedAccess,
		_Out_writes_(ObjectTypeListLength) PNTSTATUS	AccessStatus
	)

Determines whether security access can be granted to a client that requests such access on the object type list. Unlike the NtAccessCheckByType variant, this function will grant or deny access to each individual object and sub-object in the list.

Remarks

For more documentation details about the parameters and overall function behavior, see SepAccessCheck.

Definition at line 2297 of file accesschk.c.

{
    PAGED_CODE();
 
    /* Invoke the internal function to do the job */
    return SepAccessCheck(SecurityDescriptor,
                          ClientToken,
                          PrincipalSelfSid,
                          DesiredAccess,
                          GenericMapping,
                          PrivilegeSet,
                          PrivilegeSetLength,
                          ObjectTypeList,
                          ObjectTypeListLength,
                          TRUE,
                          GrantedAccess,
                          AccessStatus);
}

Referenced by AccessCheckByTypeResultList(), DenyAccessTests(), GrantedAccessTests(), and ParamValidationNoObjsList().

NtAdjustGroupsToken()

_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI NtAdjustGroupsToken	(	_In_ HANDLE	TokenHandle,
		_In_ BOOLEAN	ResetToDefault,
		_In_opt_ PTOKEN_GROUPS	NewState,
		_In_opt_ ULONG	BufferLength,
		_Out_writes_bytes_to_opt_(BufferLength, *ReturnLength) PTOKEN_GROUPS	PreviousState,
		_When_(PreviousState !=NULL, _Out_) PULONG	ReturnLength
	)

NtAdjustPrivilegesToken()

_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI NtAdjustPrivilegesToken	(	_In_ HANDLE	TokenHandle,
		_In_ BOOLEAN	DisableAllPrivileges,
		_In_opt_ PTOKEN_PRIVILEGES	NewState,
		_In_ ULONG	BufferLength,
		_Out_writes_bytes_to_opt_(BufferLength, *ReturnLength) PTOKEN_PRIVILEGES	PreviousState,
		_When_(PreviousState !=NULL, _Out_) PULONG	ReturnLength
	)

NtAllocateLocallyUniqueId()

NTSYSCALLAPI NTSTATUS NTAPI NtAllocateLocallyUniqueId

(

_Out_ LUID *

LocallyUniqueId

)

NtAllocateUuids()

NTSYSCALLAPI NTSTATUS NTAPI NtAllocateUuids	(	_Out_ PULARGE_INTEGER	Time,
		_Out_ PULONG	Range,
		_Out_ PULONG	Sequence,
		_Out_ PUCHAR	Seed
	)

NtCompareTokens()

NTSYSCALLAPI NTSTATUS NTAPI NtCompareTokens	(	_In_ HANDLE	FirstTokenHandle,
		_In_ HANDLE	SecondTokenHandle,
		_Out_ PBOOLEAN	Equal
	)

Compares tokens if they're equal or not.

Parameters

[in]	FirstToken	The first token.
[in]	SecondToken	The second token.
[out]	Equal	The retrieved value which determines if the tokens are equal or not.

Returns

Returns STATUS_SUCCESS, otherwise it returns a failure NTSTATUS code.

Definition at line 2503 of file token.c.

{
    KPROCESSOR_MODE PreviousMode;
    PTOKEN FirstToken, SecondToken;
    BOOLEAN IsEqual;
    NTSTATUS Status;
 
    PAGED_CODE();
 
    PreviousMode = ExGetPreviousMode();
 
    if (PreviousMode != KernelMode)
    {
        _SEH2_TRY
        {
            ProbeForWriteBoolean(Equal);
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            /* Return the exception code */
            _SEH2_YIELD(return _SEH2_GetExceptionCode());
        }
        _SEH2_END;
    }
 
    Status = ObReferenceObjectByHandle(FirstTokenHandle,
                                       TOKEN_QUERY,
                                       SeTokenObjectType,
                                       PreviousMode,
                                       (PVOID*)&FirstToken,
                                       NULL);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("ObReferenceObjectByHandle() failed (Status 0x%lx)\n", Status);
        return Status;
    }
 
    Status = ObReferenceObjectByHandle(SecondTokenHandle,
                                       TOKEN_QUERY,
                                       SeTokenObjectType,
                                       PreviousMode,
                                       (PVOID*)&SecondToken,
                                       NULL);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("ObReferenceObjectByHandle() failed (Status 0x%lx)\n", Status);
        ObDereferenceObject(FirstToken);
        return Status;
    }
 
    if (FirstToken != SecondToken)
    {
        Status = SepCompareTokens(FirstToken,
                                  SecondToken,
                                  &IsEqual);
    }
    else
    {
        IsEqual = TRUE;
    }
 
    ObDereferenceObject(SecondToken);
    ObDereferenceObject(FirstToken);
 
    if (NT_SUCCESS(Status))
    {
        _SEH2_TRY
        {
            *Equal = IsEqual;
        }
        _SEH2_EXCEPT(ExSystemExceptionFilter())
        {
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END;
    }
 
    return Status;
}

Referenced by START_TEST().

NtCreateToken()

__kernel_entry NTSYSCALLAPI NTSTATUS NTAPI NtCreateToken	(	_Out_ PHANDLE	TokenHandle,
		_In_ ACCESS_MASK	DesiredAccess,
		_In_opt_ POBJECT_ATTRIBUTES	ObjectAttributes,
		_In_ TOKEN_TYPE	TokenType,
		_In_ PLUID	AuthenticationId,
		_In_ PLARGE_INTEGER	ExpirationTime,
		_In_ PTOKEN_USER	TokenUser,
		_In_ PTOKEN_GROUPS	TokenGroups,
		_In_ PTOKEN_PRIVILEGES	TokenPrivileges,
		_In_opt_ PTOKEN_OWNER	TokenOwner,
		_In_ PTOKEN_PRIMARY_GROUP	TokenPrimaryGroup,
		_In_opt_ PTOKEN_DEFAULT_DACL	TokenDefaultDacl,
		_In_ PTOKEN_SOURCE	TokenSource
	)

Creates an access token.

Parameters

[out]	TokenHandle	The returned created token handle to the caller.
[in]	DesiredAccess	The desired access rights for the token that we're creating.
[in]	ObjectAttributes	The object attributes for the token object that we're creating.
[in]	TokenType	The type of token to assign for the newly created token.
[in]	AuthenticationId	Authentication ID that represents the token's identity.
[in]	ExpirationTime	Expiration time for the token. If set to -1, the token never expires.
[in]	TokenUser	The main user entity for the token to assign.
[in]	TokenGroups	Group list of SIDs for the token to assign.
[in]	TokenPrivileges	Privileges for the token.
[in]	TokenOwner	The main user that owns the newly created token.
[in]	TokenPrimaryGroup	The primary group that represents as the main group of the token.
[in]	TokenDefaultDacl	Discretionary access control list for the token. This limits on how the token can be used, accessed and used by whom.
[in]	TokenSource	The source origin of the token who creates it.

Returns

Returns STATUS_SUCCESS if the function has successfully created the token. A failure NTSTATUS code is returned otherwise.

Definition at line 1558 of file tokenlif.c.

{
    HANDLE hToken;
    KPROCESSOR_MODE PreviousMode;
    ULONG PrivilegeCount, GroupCount;
    PSID OwnerSid, PrimaryGroupSid;
    PACL DefaultDacl;
    LARGE_INTEGER LocalExpirationTime = {{0, 0}};
    LUID LocalAuthenticationId;
    TOKEN_SOURCE LocalTokenSource;
    SECURITY_QUALITY_OF_SERVICE LocalSecurityQos;
    PLUID_AND_ATTRIBUTES CapturedPrivileges = NULL;
    PSID_AND_ATTRIBUTES CapturedUser = NULL;
    PSID_AND_ATTRIBUTES CapturedGroups = NULL;
    PSID CapturedOwnerSid = NULL;
    PSID CapturedPrimaryGroupSid = NULL;
    PACL CapturedDefaultDacl = NULL;
    ULONG PrivilegesLength, UserLength, GroupsLength;
    NTSTATUS Status;
 
    PAGED_CODE();
 
    PreviousMode = ExGetPreviousMode();
 
    if (PreviousMode != KernelMode)
    {
        _SEH2_TRY
        {
            ProbeForWriteHandle(TokenHandle);
 
            if (ObjectAttributes != NULL)
            {
                ProbeForRead(ObjectAttributes,
                             sizeof(OBJECT_ATTRIBUTES),
                             sizeof(ULONG));
                LocalSecurityQos = *(SECURITY_QUALITY_OF_SERVICE*)ObjectAttributes->SecurityQualityOfService;
            }
 
            ProbeForRead(AuthenticationId,
                         sizeof(LUID),
                         sizeof(ULONG));
            LocalAuthenticationId = *AuthenticationId;
 
            LocalExpirationTime = ProbeForReadLargeInteger(ExpirationTime);
 
            ProbeForRead(TokenUser,
                         sizeof(TOKEN_USER),
                         sizeof(ULONG));
 
            ProbeForRead(TokenGroups,
                         sizeof(TOKEN_GROUPS),
                         sizeof(ULONG));
            GroupCount = TokenGroups->GroupCount;
 
            ProbeForRead(TokenPrivileges,
                         sizeof(TOKEN_PRIVILEGES),
                         sizeof(ULONG));
            PrivilegeCount = TokenPrivileges->PrivilegeCount;
 
            if (TokenOwner != NULL)
            {
                ProbeForRead(TokenOwner,
                             sizeof(TOKEN_OWNER),
                             sizeof(ULONG));
                OwnerSid = TokenOwner->Owner;
            }
            else
            {
                OwnerSid = NULL;
            }
 
            ProbeForRead(TokenPrimaryGroup,
                         sizeof(TOKEN_PRIMARY_GROUP),
                         sizeof(ULONG));
            PrimaryGroupSid = TokenPrimaryGroup->PrimaryGroup;
 
            if (TokenDefaultDacl != NULL)
            {
                ProbeForRead(TokenDefaultDacl,
                             sizeof(TOKEN_DEFAULT_DACL),
                             sizeof(ULONG));
                DefaultDacl = TokenDefaultDacl->DefaultDacl;
            }
            else
            {
                DefaultDacl = NULL;
            }
 
            ProbeForRead(TokenSource,
                         sizeof(TOKEN_SOURCE),
                         sizeof(ULONG));
            LocalTokenSource = *TokenSource;
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            /* Return the exception code */
            _SEH2_YIELD(return _SEH2_GetExceptionCode());
        }
        _SEH2_END;
    }
    else
    {
        if (ObjectAttributes != NULL)
            LocalSecurityQos = *(SECURITY_QUALITY_OF_SERVICE*)ObjectAttributes->SecurityQualityOfService;
        LocalAuthenticationId = *AuthenticationId;
        LocalExpirationTime = *ExpirationTime;
        GroupCount = TokenGroups->GroupCount;
        PrivilegeCount = TokenPrivileges->PrivilegeCount;
        OwnerSid = TokenOwner ? TokenOwner->Owner : NULL;
        PrimaryGroupSid = TokenPrimaryGroup->PrimaryGroup;
        DefaultDacl = TokenDefaultDacl ? TokenDefaultDacl->DefaultDacl : NULL;
        LocalTokenSource = *TokenSource;
    }
 
    /* Check token type */
    if ((TokenType < TokenPrimary) ||
        (TokenType > TokenImpersonation))
    {
        return STATUS_BAD_TOKEN_TYPE;
    }
 
    /* Check for token creation privilege */
    if (!SeSinglePrivilegeCheck(SeCreateTokenPrivilege, PreviousMode))
    {
        return STATUS_PRIVILEGE_NOT_HELD;
    }
 
    /* Capture the user SID and attributes */
    Status = SeCaptureSidAndAttributesArray(&TokenUser->User,
                                            1,
                                            PreviousMode,
                                            NULL,
                                            0,
                                            PagedPool,
                                            FALSE,
                                            &CapturedUser,
                                            &UserLength);
    if (!NT_SUCCESS(Status))
    {
        goto Cleanup;
    }
 
    /* Capture the groups SID and attributes array */
    Status = SeCaptureSidAndAttributesArray(&TokenGroups->Groups[0],
                                            GroupCount,
                                            PreviousMode,
                                            NULL,
                                            0,
                                            PagedPool,
                                            FALSE,
                                            &CapturedGroups,
                                            &GroupsLength);
    if (!NT_SUCCESS(Status))
    {
        goto Cleanup;
    }
 
    /* Capture privileges */
    Status = SeCaptureLuidAndAttributesArray(&TokenPrivileges->Privileges[0],
                                             PrivilegeCount,
                                             PreviousMode,
                                             NULL,
                                             0,
                                             PagedPool,
                                             FALSE,
                                             &CapturedPrivileges,
                                             &PrivilegesLength);
    if (!NT_SUCCESS(Status))
    {
        goto Cleanup;
    }
 
    /* Capture the token owner SID */
    if (TokenOwner != NULL)
    {
        Status = SepCaptureSid(OwnerSid,
                               PreviousMode,
                               PagedPool,
                               FALSE,
                               &CapturedOwnerSid);
        if (!NT_SUCCESS(Status))
        {
            goto Cleanup;
        }
    }
 
    /* Capture the token primary group SID */
    Status = SepCaptureSid(PrimaryGroupSid,
                           PreviousMode,
                           PagedPool,
                           FALSE,
                           &CapturedPrimaryGroupSid);
    if (!NT_SUCCESS(Status))
    {
        goto Cleanup;
    }
 
    /* Capture DefaultDacl */
    if (DefaultDacl != NULL)
    {
        Status = SepCaptureAcl(DefaultDacl,
                               PreviousMode,
                               NonPagedPool,
                               FALSE,
                               &CapturedDefaultDacl);
        if (!NT_SUCCESS(Status))
        {
            goto Cleanup;
        }
    }
 
    /* Call the internal function */
    Status = SepCreateToken(&hToken,
                            PreviousMode,
                            DesiredAccess,
                            ObjectAttributes,
                            TokenType,
                            LocalSecurityQos.ImpersonationLevel,
                            &LocalAuthenticationId,
                            &LocalExpirationTime,
                            CapturedUser,
                            GroupCount,
                            CapturedGroups,
                            GroupsLength,
                            PrivilegeCount,
                            CapturedPrivileges,
                            CapturedOwnerSid,
                            CapturedPrimaryGroupSid,
                            CapturedDefaultDacl,
                            &LocalTokenSource,
                            FALSE);
    if (NT_SUCCESS(Status))
    {
        _SEH2_TRY
        {
            *TokenHandle = hToken;
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END;
    }
 
Cleanup:
 
    /* Release what we captured */
    SeReleaseSidAndAttributesArray(CapturedUser, PreviousMode, FALSE);
    SeReleaseSidAndAttributesArray(CapturedGroups, PreviousMode, FALSE);
    SeReleaseLuidAndAttributesArray(CapturedPrivileges, PreviousMode, FALSE);
    SepReleaseSid(CapturedOwnerSid, PreviousMode, FALSE);
    SepReleaseSid(CapturedPrimaryGroupSid, PreviousMode, FALSE);
    SepReleaseAcl(CapturedDefaultDacl, PreviousMode, FALSE);
 
    return Status;
}

Referenced by LsapLogonUser().

NtDuplicateToken()

_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI NtDuplicateToken	(	_In_ HANDLE	ExistingTokenHandle,
		_In_ ACCESS_MASK	DesiredAccess,
		_In_opt_ POBJECT_ATTRIBUTES	ObjectAttributes,
		_In_ BOOLEAN	EffectiveOnly,
		_In_ TOKEN_TYPE	TokenType,
		_Out_ PHANDLE	NewTokenHandle
	)

Duplicates a token.

Parameters

[in]	ExistingTokenHandle	An existing token to duplicate.
[in]	DesiredAccess	The desired access rights for the new duplicated token.
[in]	ObjectAttributes	Object attributes for the new duplicated token.
[in]	EffectiveOnly	If set to TRUE, the function removes all the disabled privileges and groups of the token to duplicate.
[in]	TokenType	Type of token to assign to the duplicated token.
[out]	NewTokenHandle	The returned duplicated token handle.

Returns

STATUS_SUCCESS is returned if token duplication has completed successfully. STATUS_BAD_IMPERSONATION_LEVEL is returned if the caller erroneously wants to raise the impersonation level even though the conditions do not permit it. A failure NTSTATUS code is returned otherwise.

Remarks

Some sources claim 4th param is ImpersonationLevel, but on W2K this is certainly NOT true, although I can't say for sure that EffectiveOnly is correct either. -Gunnar This is true. EffectiveOnly overrides SQOS.EffectiveOnly. - IAI NOTE for readers: https://hex.pp.ua/nt/NtDuplicateToken.php is therefore wrong in that regard, while MSDN documentation is correct.

Definition at line 1869 of file tokenlif.c.

{
    KPROCESSOR_MODE PreviousMode;
    HANDLE hToken;
    PTOKEN Token;
    PTOKEN NewToken;
    PSECURITY_QUALITY_OF_SERVICE CapturedSecurityQualityOfService;
    BOOLEAN QoSPresent;
    OBJECT_HANDLE_INFORMATION HandleInformation;
    NTSTATUS Status;
 
    PAGED_CODE();
 
    if (TokenType != TokenImpersonation &&
        TokenType != TokenPrimary)
    {
        return STATUS_INVALID_PARAMETER;
    }
 
    PreviousMode = KeGetPreviousMode();
 
    if (PreviousMode != KernelMode)
    {
        _SEH2_TRY
        {
            ProbeForWriteHandle(NewTokenHandle);
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            /* Return the exception code */
            _SEH2_YIELD(return _SEH2_GetExceptionCode());
        }
        _SEH2_END;
    }
 
    Status = SepCaptureSecurityQualityOfService(ObjectAttributes,
                                                PreviousMode,
                                                PagedPool,
                                                FALSE,
                                                &CapturedSecurityQualityOfService,
                                                &QoSPresent);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtDuplicateToken() failed to capture QoS! Status: 0x%x\n", Status);
        return Status;
    }
 
    Status = ObReferenceObjectByHandle(ExistingTokenHandle,
                                       TOKEN_DUPLICATE,
                                       SeTokenObjectType,
                                       PreviousMode,
                                       (PVOID*)&Token,
                                       &HandleInformation);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to reference token (Status 0x%lx)\n", Status);
        SepReleaseSecurityQualityOfService(CapturedSecurityQualityOfService,
                                           PreviousMode,
                                           FALSE);
        return Status;
    }
 
    /*
     * Fail, if the original token is an impersonation token and the caller
     * tries to raise the impersonation level of the new token above the
     * impersonation level of the original token.
     */
    if (Token->TokenType == TokenImpersonation)
    {
        if (QoSPresent &&
            CapturedSecurityQualityOfService->ImpersonationLevel >Token->ImpersonationLevel)
        {
            ObDereferenceObject(Token);
            SepReleaseSecurityQualityOfService(CapturedSecurityQualityOfService,
                                               PreviousMode,
                                               FALSE);
            return STATUS_BAD_IMPERSONATION_LEVEL;
        }
    }
 
    /*
     * Fail, if a primary token is to be created from an impersonation token
     * and and the impersonation level of the impersonation token is below SecurityImpersonation.
     */
    if (Token->TokenType == TokenImpersonation &&
        TokenType == TokenPrimary &&
        Token->ImpersonationLevel < SecurityImpersonation)
    {
        ObDereferenceObject(Token);
        SepReleaseSecurityQualityOfService(CapturedSecurityQualityOfService,
                                           PreviousMode,
                                           FALSE);
        return STATUS_BAD_IMPERSONATION_LEVEL;
    }
 
    Status = SepDuplicateToken(Token,
                               ObjectAttributes,
                               EffectiveOnly,
                               TokenType,
                               (QoSPresent ? CapturedSecurityQualityOfService->ImpersonationLevel : SecurityAnonymous),
                               PreviousMode,
                               &NewToken);
 
    ObDereferenceObject(Token);
 
    if (NT_SUCCESS(Status))
    {
        Status = ObInsertObject(NewToken,
                                NULL,
                                (DesiredAccess ? DesiredAccess : HandleInformation.GrantedAccess),
                                0,
                                NULL,
                                &hToken);
        if (NT_SUCCESS(Status))
        {
            _SEH2_TRY
            {
                *NewTokenHandle = hToken;
            }
            _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
            {
                Status = _SEH2_GetExceptionCode();
            }
            _SEH2_END;
        }
    }
 
    /* Free the captured structure */
    SepReleaseSecurityQualityOfService(CapturedSecurityQualityOfService,
                                       PreviousMode,
                                       FALSE);
 
    return Status;
}

NtFilterToken()

_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI NtFilterToken	(	_In_ HANDLE	ExistingTokenHandle,
		_In_ ULONG	Flags,
		_In_opt_ PTOKEN_GROUPS	SidsToDisable,
		_In_opt_ PTOKEN_PRIVILEGES	PrivilegesToDelete,
		_In_opt_ PTOKEN_GROUPS	RestrictedSids,
		_Out_ PHANDLE	NewTokenHandle
	)

Creates an access token in a restricted form from the original existing token, that is, such action is called filtering.

Parameters

[in]	ExistingTokenHandle	A handle to an access token which is to be filtered.
[in]	Flags	Privilege flag options. This parameter argument influences how the token's privileges are filtered. For further details see remarks.
[in]	SidsToDisable	Array of SIDs to disable. The action of doing so assigns the SE_GROUP_USE_FOR_DENY_ONLY attribute to the respective group SID and takes away SE_GROUP_ENABLED and SE_GROUP_ENABLED_BY_DEFAULT. This parameter can be NULL. This can be a UM pointer.
[in]	PrivilegesToDelete	Array of privileges to delete. The function will walk within this array to determine if the specified privileges do exist in the access token. Any missing privileges gets ignored. This parameter can be NULL. This can be a UM pointer.
[in]	RestrictedSids	An array list of restricted groups SID to be added in the access token. A token that is already restricted the newly added restricted SIDs are redundant information in addition to the existing restricted SIDs in the token. This parameter can be NULL. This can be a UM pointer.
[out]	NewTokenHandle	A new handle to the restricted (filtered) access token. This can be a UM pointer.

Returns

Returns STATUS_SUCCESS if the routine has successfully filtered the access token. STATUS_INVALID_PARAMETER is returned if one or more parameters are not valid (see SepPerformTokenFiltering routine call for more information). A failure NTSTATUS code is returned otherwise.

Remarks

The Flags parameter determines the final outcome of how the privileges in an access token are filtered. This parameter can take these supported values (these can be combined):

0 – Filter the token's privileges in the usual way. The function expects that the caller MUST PROVIDE a valid array list of privileges to be deleted (that is, PrivilegesToDelete MUSTN'T BE NULL).

DISABLE_MAX_PRIVILEGE – Disables (deletes) all the privileges except SeChangeNotifyPrivilege in the new access token. Bear in mind if this flag is specified the routine ignores PrivilegesToDelete.

SANDBOX_INERT – Stores the TOKEN_SANDBOX_INERT token flag within the access token.

LUA_TOKEN – The newly filtered access token is a LUA token. This flag is not supported in Windows Server 2003.

WRITE_RESTRICTED – The newly filtered token has the restricted SIDs that are considered only when evaluating write access onto the token. This value is not supported in Windows Server 2003.

Definition at line 2075 of file tokenlif.c.

{
    PTOKEN Token, FilteredToken;
    HANDLE FilteredTokenHandle;
    NTSTATUS Status;
    KPROCESSOR_MODE PreviousMode;
    OBJECT_HANDLE_INFORMATION HandleInfo;
    ULONG ResultLength;
    ULONG CapturedSidsCount = 0;
    ULONG CapturedPrivilegesCount = 0;
    ULONG CapturedRestrictedSidsCount = 0;
    ULONG ProbeSize = 0;
    PSID_AND_ATTRIBUTES CapturedSids = NULL;
    PSID_AND_ATTRIBUTES CapturedRestrictedSids = NULL;
    PLUID_AND_ATTRIBUTES CapturedPrivileges = NULL;
 
    PAGED_CODE();
 
    PreviousMode = ExGetPreviousMode();
 
    _SEH2_TRY
    {
        /* Probe SidsToDisable */
        if (SidsToDisable != NULL)
        {
            /* Probe the header */
            ProbeForRead(SidsToDisable, sizeof(*SidsToDisable), sizeof(ULONG));
 
            CapturedSidsCount = SidsToDisable->GroupCount;
            ProbeSize = FIELD_OFFSET(TOKEN_GROUPS, Groups[CapturedSidsCount]);
 
            ProbeForRead(SidsToDisable, ProbeSize, sizeof(ULONG));
        }
 
        /* Probe PrivilegesToDelete */
        if (PrivilegesToDelete != NULL)
        {
            /* Probe the header */
            ProbeForRead(PrivilegesToDelete, sizeof(*PrivilegesToDelete), sizeof(ULONG));
 
            CapturedPrivilegesCount = PrivilegesToDelete->PrivilegeCount;
            ProbeSize = FIELD_OFFSET(TOKEN_PRIVILEGES, Privileges[CapturedPrivilegesCount]);
 
            ProbeForRead(PrivilegesToDelete, ProbeSize, sizeof(ULONG));
        }
 
        /* Probe RestrictedSids */
        if (RestrictedSids != NULL)
        {
            /* Probe the header */
            ProbeForRead(RestrictedSids, sizeof(*RestrictedSids), sizeof(ULONG));
 
            CapturedRestrictedSidsCount = RestrictedSids->GroupCount;
            ProbeSize = FIELD_OFFSET(TOKEN_GROUPS, Groups[CapturedRestrictedSidsCount]);
 
            ProbeForRead(RestrictedSids, ProbeSize, sizeof(ULONG));
        }
 
        /* Probe the handle */
        ProbeForWriteHandle(NewTokenHandle);
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        /* Return the exception code */
        _SEH2_YIELD(return _SEH2_GetExceptionCode());
    }
    _SEH2_END;
 
    /* Reference the token */
    Status = ObReferenceObjectByHandle(ExistingTokenHandle,
                                       TOKEN_DUPLICATE,
                                       SeTokenObjectType,
                                       PreviousMode,
                                       (PVOID*)&Token,
                                       &HandleInfo);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtFilterToken(): Failed to reference the token (Status 0x%lx)\n", Status);
        return Status;
    }
 
    /* Capture the group SIDs */
    if (SidsToDisable != NULL)
    {
        Status = SeCaptureSidAndAttributesArray(SidsToDisable->Groups,
                                                CapturedSidsCount,
                                                PreviousMode,
                                                NULL,
                                                0,
                                                PagedPool,
                                                TRUE,
                                                &CapturedSids,
                                                &ResultLength);
        if (!NT_SUCCESS(Status))
        {
            DPRINT1("NtFilterToken(): Failed to capture the SIDs (Status 0x%lx)\n", Status);
            goto Quit;
        }
    }
 
    /* Capture the privileges */
    if (PrivilegesToDelete != NULL)
    {
        Status = SeCaptureLuidAndAttributesArray(PrivilegesToDelete->Privileges,
                                                 CapturedPrivilegesCount,
                                                 PreviousMode,
                                                 NULL,
                                                 0,
                                                 PagedPool,
                                                 TRUE,
                                                 &CapturedPrivileges,
                                                 &ResultLength);
        if (!NT_SUCCESS(Status))
        {
            DPRINT1("NtFilterToken(): Failed to capture the privileges (Status 0x%lx)\n", Status);
            goto Quit;
        }
    }
 
    /* Capture the restricted SIDs */
    if (RestrictedSids != NULL)
    {
        Status = SeCaptureSidAndAttributesArray(RestrictedSids->Groups,
                                                CapturedRestrictedSidsCount,
                                                PreviousMode,
                                                NULL,
                                                0,
                                                PagedPool,
                                                TRUE,
                                                &CapturedRestrictedSids,
                                                &ResultLength);
        if (!NT_SUCCESS(Status))
        {
            DPRINT1("NtFilterToken(): Failed to capture the restricted SIDs (Status 0x%lx)\n", Status);
            goto Quit;
        }
    }
 
    /* Call the internal API */
    Status = SepPerformTokenFiltering(Token,
                                      CapturedPrivileges,
                                      CapturedSids,
                                      CapturedRestrictedSids,
                                      CapturedPrivilegesCount,
                                      CapturedSidsCount,
                                      CapturedRestrictedSidsCount,
                                      Flags,
                                      PreviousMode,
                                      &FilteredToken);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtFilterToken(): Failed to filter the token (Status 0x%lx)\n", Status);
        goto Quit;
    }
 
    /* Insert the filtered token and retrieve a handle to it */
    Status = ObInsertObject(FilteredToken,
                            NULL,
                            HandleInfo.GrantedAccess,
                            0,
                            NULL,
                            &FilteredTokenHandle);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtFilterToken(): Failed to insert the filtered token (Status 0x%lx)\n", Status);
        goto Quit;
    }
 
    /* And return it to the caller once we're done */
    _SEH2_TRY
    {
        *NewTokenHandle = FilteredTokenHandle;
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        Status = _SEH2_GetExceptionCode();
        _SEH2_YIELD(goto Quit);
    }
    _SEH2_END;
 
Quit:
    /* Dereference the token */
    ObDereferenceObject(Token);
 
    /* Release all the captured data */
    if (CapturedSids != NULL)
    {
        SeReleaseSidAndAttributesArray(CapturedSids,
                                       PreviousMode,
                                       TRUE);
    }
 
    if (CapturedPrivileges != NULL)
    {
        SeReleaseLuidAndAttributesArray(CapturedPrivileges,
                                        PreviousMode,
                                        TRUE);
    }
 
    if (CapturedRestrictedSids != NULL)
    {
        SeReleaseSidAndAttributesArray(CapturedRestrictedSids,
                                       PreviousMode,
                                       TRUE);
    }
 
    return Status;
}

NtImpersonateAnonymousToken()

NTSYSCALLAPI NTSTATUS NTAPI NtImpersonateAnonymousToken

(

_In_ HANDLE

ThreadHandle

)

Allows the calling thread to impersonate the system's anonymous logon token.

Parameters

[in]

ThreadHandle

A handle to the thread to start the procedure of logon token impersonation. The thread must have the THREAD_IMPERSONATE access right.

Returns

Returns STATUS_SUCCESS if the thread has successfully impersonated the anonymous logon token, otherwise a failure NTSTATUS code is returned.

Remarks

By default the system gives the opportunity to the caller to impersonate the anonymous logon token without including the Everyone Group SID. In cases where the caller wants to impersonate the token including such group, the EveryoneIncludesAnonymous registry value setting has to be set to 1, from HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa registry path. The calling thread must invoke PsRevertToSelf when impersonation is no longer needed or RevertToSelf if the calling execution is done in user mode.

Definition at line 2612 of file token.c.

{
    PETHREAD Thread;
    KPROCESSOR_MODE PreviousMode;
    NTSTATUS Status;
    PAGED_CODE();
 
    PreviousMode = ExGetPreviousMode();
 
    /* Obtain the thread object from the handle */
    Status = ObReferenceObjectByHandle(ThreadHandle,
                                       THREAD_IMPERSONATE,
                                       PsThreadType,
                                       PreviousMode,
                                       (PVOID*)&Thread,
                                       NULL);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtImpersonateAnonymousToken(): Failed to reference the object (Status 0x%lx)\n", Status);
        return Status;
    }
 
    /* Call the private routine to impersonate the token */
    Status = SepImpersonateAnonymousToken(Thread, PreviousMode);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtImpersonateAnonymousToken(): Failed to impersonate the token (Status 0x%lx)\n", Status);
    }
 
    ObDereferenceObject(Thread);
    return Status;
}

NtOpenObjectAuditAlarm()

__kernel_entry NTSYSCALLAPI NTSTATUS NTAPI NtOpenObjectAuditAlarm	(	_In_ PUNICODE_STRING	SubsystemName,
		_In_opt_ PVOID	HandleId,
		_In_ PUNICODE_STRING	ObjectTypeName,
		_In_ PUNICODE_STRING	ObjectName,
		_In_opt_ PSECURITY_DESCRIPTOR	SecurityDescriptor,
		_In_ HANDLE	ClientTokenHandle,
		_In_ ACCESS_MASK	DesiredAccess,
		_In_ ACCESS_MASK	GrantedAccess,
		_In_opt_ PPRIVILEGE_SET	PrivilegeSet,
		_In_ BOOLEAN	ObjectCreation,
		_In_ BOOLEAN	AccessGranted,
		_Out_ PBOOLEAN	GenerateOnClose
	)

Raises an alarm audit message when an object is about to be opened.

Parameters

[in]	SubsystemName	A Unicode string that points to a name of the subsystem.
[in]	HandleId	A handle to an ID used for identification instance for auditing.
[in]	ObjectTypeName	A Unicode string that points to an object type name.
[in]	ObjectName	The name of the object.
[in]	SecurityDescriptor	A security descriptor.
[in]	ClientTokenHandle	A handle to a client access token.
[in]	DesiredAccess	The desired access rights masks requested by the caller.
[in]	GrantedAccess	The granted access mask rights.
[in]	PrivilegeSet	If specified, the function will use this set of privileges to audit.
[in]	ObjectCreation	Set this to TRUE if the object has just been created.
[in]	AccessGranted	Set this to TRUE if the access attempt was deemed as granted.
[out]	GenerateOnClose	A boolean flag returned to the caller once audit generation procedure finishes.

Returns

Returns STATUS_SUCCESS if all the operations have been completed successfully. STATUS_PRIVILEGE_NOT_HELD is returned if the given subject context does not hold the required audit privilege to actually begin auditing in the first place. STATUS_BAD_IMPERSONATION_LEVEL is returned if the security impersonation level of the client token is not on par with the impersonation level that alllows impersonation. STATUS_INVALID_PARAMETER is returned if the caller has submitted a bogus set of privileges as such array set exceeds the maximum count of privileges that the kernel can accept. A failure NTSTATUS code is returned otherwise.

Definition at line 1622 of file audit.c.

{
    PTOKEN ClientToken;
    PSECURITY_DESCRIPTOR CapturedSecurityDescriptor;
    UNICODE_STRING CapturedSubsystemName, CapturedObjectTypeName, CapturedObjectName;
    ULONG PrivilegeCount, PrivilegeSetSize;
    volatile PPRIVILEGE_SET CapturedPrivilegeSet;
    BOOLEAN LocalGenerateOnClose;
    PVOID CapturedHandleId;
    SECURITY_SUBJECT_CONTEXT SubjectContext;
    NTSTATUS Status;
    PAGED_CODE();
 
    /* Only user mode is supported! */
    ASSERT(ExGetPreviousMode() != KernelMode);
 
    /* Start clean */
    ClientToken = NULL;
    CapturedSecurityDescriptor = NULL;
    CapturedPrivilegeSet = NULL;
    CapturedSubsystemName.Buffer = NULL;
    CapturedObjectTypeName.Buffer = NULL;
    CapturedObjectName.Buffer = NULL;
 
    /* Reference the client token */
    Status = ObReferenceObjectByHandle(ClientTokenHandle,
                                       TOKEN_QUERY,
                                       SeTokenObjectType,
                                       UserMode,
                                       (PVOID*)&ClientToken,
                                       NULL);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to reference token handle %p: %lx\n",
                ClientTokenHandle, Status);
        return Status;
    }
 
    /* Capture the security subject context */
    SeCaptureSubjectContext(&SubjectContext);
 
    /* Validate the token's impersonation level */
    if ((ClientToken->TokenType == TokenImpersonation) &&
        (ClientToken->ImpersonationLevel < SecurityIdentification))
    {
        DPRINT1("Invalid impersonation level (%u)\n", ClientToken->ImpersonationLevel);
        Status = STATUS_BAD_IMPERSONATION_LEVEL;
        goto Cleanup;
    }
 
    /* Check for audit privilege */
    if (!SeCheckAuditPrivilege(&SubjectContext, UserMode))
    {
        DPRINT1("Caller does not have SeAuditPrivilege\n");
        Status = STATUS_PRIVILEGE_NOT_HELD;
        goto Cleanup;
    }
 
    /* Check for NULL SecurityDescriptor */
    if (SecurityDescriptor == NULL)
    {
        /* Nothing to do */
        Status = STATUS_SUCCESS;
        goto Cleanup;
    }
 
    /* Capture the security descriptor */
    Status = SeCaptureSecurityDescriptor(SecurityDescriptor,
                                         UserMode,
                                         PagedPool,
                                         FALSE,
                                         &CapturedSecurityDescriptor);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to capture security descriptor!\n");
        goto Cleanup;
    }
 
    _SEH2_TRY
    {
        /* Check if we have a privilege set */
        if (PrivilegeSet != NULL)
        {
            /* Probe the basic privilege set structure */
            ProbeForRead(PrivilegeSet, sizeof(PRIVILEGE_SET), sizeof(ULONG));
 
            /* Validate privilege count */
            PrivilegeCount = PrivilegeSet->PrivilegeCount;
            if (PrivilegeCount > SEP_PRIVILEGE_SET_MAX_COUNT)
            {
                Status = STATUS_INVALID_PARAMETER;
                _SEH2_YIELD(goto Cleanup);
            }
 
            /* Calculate the size of the PrivilegeSet structure */
            PrivilegeSetSize = FIELD_OFFSET(PRIVILEGE_SET, Privilege[PrivilegeCount]);
 
            /* Probe the whole structure */
            ProbeForRead(PrivilegeSet, PrivilegeSetSize, sizeof(ULONG));
 
            /* Allocate a temp buffer */
            CapturedPrivilegeSet = ExAllocatePoolWithTag(PagedPool,
                                                         PrivilegeSetSize,
                                                         TAG_PRIVILEGE_SET);
            if (CapturedPrivilegeSet == NULL)
            {
                DPRINT1("Failed to allocate %u bytes\n", PrivilegeSetSize);
                Status = STATUS_INSUFFICIENT_RESOURCES;
                _SEH2_YIELD(goto Cleanup);
            }
 
            /* Copy the privileges */
            RtlCopyMemory(CapturedPrivilegeSet, PrivilegeSet, PrivilegeSetSize);
        }
 
        if (HandleId != NULL)
        {
            ProbeForRead(HandleId, sizeof(PVOID), sizeof(PVOID));
            CapturedHandleId = *(PVOID*)HandleId;
        }
 
        ProbeForWrite(GenerateOnClose, sizeof(BOOLEAN), sizeof(BOOLEAN));
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        Status = _SEH2_GetExceptionCode();
        DPRINT1("Exception while probing parameters: 0x%lx\n", Status);
        _SEH2_YIELD(goto Cleanup);
    }
    _SEH2_END;
 
    /* Probe and capture the subsystem name */
    Status = ProbeAndCaptureUnicodeString(&CapturedSubsystemName,
                                          UserMode,
                                          SubsystemName);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to capture subsystem name!\n");
        goto Cleanup;
    }
 
    /* Probe and capture the object type name */
    Status = ProbeAndCaptureUnicodeString(&CapturedObjectTypeName,
                                          UserMode,
                                          ObjectTypeName);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to capture object type name!\n");
        goto Cleanup;
    }
 
    /* Probe and capture the object name */
    Status = ProbeAndCaptureUnicodeString(&CapturedObjectName,
                                          UserMode,
                                          ObjectName);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to capture object name!\n");
        goto Cleanup;
    }
 
    /* Call the internal function */
    SepOpenObjectAuditAlarm(&SubjectContext,
                            &CapturedSubsystemName,
                            CapturedHandleId,
                            &CapturedObjectTypeName,
                            &CapturedObjectName,
                            CapturedSecurityDescriptor,
                            ClientToken,
                            DesiredAccess,
                            GrantedAccess,
                            CapturedPrivilegeSet,
                            ObjectCreation,
                            AccessGranted,
                            &LocalGenerateOnClose);
 
    Status = STATUS_SUCCESS;
 
    /* Enter SEH to copy the data back to user mode */
    _SEH2_TRY
    {
        *GenerateOnClose = LocalGenerateOnClose;
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        Status = _SEH2_GetExceptionCode();
        DPRINT1("Exception while copying back data: 0x%lx\n", Status);
    }
    _SEH2_END;
 
Cleanup:
 
    if (CapturedObjectName.Buffer != NULL)
        ReleaseCapturedUnicodeString(&CapturedObjectName, UserMode);
 
    if (CapturedObjectTypeName.Buffer != NULL)
        ReleaseCapturedUnicodeString(&CapturedObjectTypeName, UserMode);
 
    if (CapturedSubsystemName.Buffer != NULL)
        ReleaseCapturedUnicodeString(&CapturedSubsystemName, UserMode);
 
    if (CapturedSecurityDescriptor != NULL)
        SeReleaseSecurityDescriptor(CapturedSecurityDescriptor, UserMode, FALSE);
 
    if (CapturedPrivilegeSet != NULL)
        ExFreePoolWithTag(CapturedPrivilegeSet, TAG_PRIVILEGE_SET);
 
    /* Release the security subject context */
    SeReleaseSubjectContext(&SubjectContext);
 
    ObDereferenceObject(ClientToken);
 
    return Status;
}

NtOpenProcessTokenEx()

NTSYSCALLAPI NTSTATUS NTAPI NtOpenProcessTokenEx	(	_In_ HANDLE	ProcessHandle,
		_In_ ACCESS_MASK	DesiredAccess,
		_In_ ULONG	HandleAttributes,
		_Out_ PHANDLE	TokenHandle
	)

NtPrivilegeCheck()

_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI NtPrivilegeCheck	(	_In_ HANDLE	ClientToken,
		_Inout_ PPRIVILEGE_SET	RequiredPrivileges,
		_Out_ PBOOLEAN	Result
	)

NtPrivilegedServiceAuditAlarm()

NTSYSCALLAPI NTSTATUS NTAPI NtPrivilegedServiceAuditAlarm	(	_In_ PUNICODE_STRING	SubsystemName,
		_In_ PUNICODE_STRING	ServiceName,
		_In_ HANDLE	ClientToken,
		_In_ PPRIVILEGE_SET	Privileges,
		_In_ BOOLEAN	AccessGranted
	)

NtPrivilegeObjectAuditAlarm()

__kernel_entry NTSYSCALLAPI NTSTATUS NTAPI NtPrivilegeObjectAuditAlarm	(	_In_ PUNICODE_STRING	SubsystemName,
		_In_opt_ PVOID	HandleId,
		_In_ HANDLE	ClientToken,
		_In_ ACCESS_MASK	DesiredAccess,
		_In_ PPRIVILEGE_SET	Privileges,
		_In_ BOOLEAN	AccessGranted
	)

NtSetInformationToken()

_Must_inspect_result_ __kernel_entry NTSYSCALLAPI NTSTATUS NTAPI NtSetInformationToken	(	_In_ HANDLE	TokenHandle,
		_In_ TOKEN_INFORMATION_CLASS	TokenInformationClass,
		_In_reads_bytes_(TokenInformationLength) PVOID	TokenInformation,
		_In_ ULONG	TokenInformationLength
	)

Sets (modifies) some specific information in regard of an access token. The calling thread must have specific access rights in order to modify token's information data.

@unimplemented

Parameters

[in]	TokenHandle	A handle of a token where information is to be modified.
[in]	TokenInformationClass	Token information class.
[in]	TokenInformation	An arbitrary pointer to a buffer with token information to set. Such arbitrary buffer depends on the information class chosen that the caller wants to modify such information data of a token.
[in]	TokenInformationLength	Length of the token information buffer, in bytes.

Returns

Returns STATUS_SUCCESS if information setting has completed successfully. STATUS_INFO_LENGTH_MISMATCH is returned if the information length of the buffer is less than the required length. STATUS_INSUFFICIENT_RESOURCES is returned if memory pool allocation has failed. STATUS_PRIVILEGE_NOT_HELD is returned if the calling thread hasn't the required privileges to perform the operation in question. A failure NTSTATUS code is returned otherwise.

Remarks

The function is partly implemented, mainly TokenOrigin.

Definition at line 1125 of file tokencls.c.

{
    NTSTATUS Status;
    PTOKEN Token;
    KPROCESSOR_MODE PreviousMode;
    ULONG NeededAccess = TOKEN_ADJUST_DEFAULT;
 
    PAGED_CODE();
 
    PreviousMode = ExGetPreviousMode();
 
    Status = DefaultSetInfoBufferCheck(TokenInformationClass,
                                       SeTokenInformationClass,
                                       RTL_NUMBER_OF(SeTokenInformationClass),
                                       TokenInformation,
                                       TokenInformationLength,
                                       PreviousMode);
    if (!NT_SUCCESS(Status))
    {
        /* Invalid buffers */
        DPRINT("NtSetInformationToken() failed, Status: 0x%x\n", Status);
        return Status;
    }
 
    if (TokenInformationClass == TokenSessionId)
    {
        NeededAccess |= TOKEN_ADJUST_SESSIONID;
    }
 
    Status = ObReferenceObjectByHandle(TokenHandle,
                                       NeededAccess,
                                       SeTokenObjectType,
                                       PreviousMode,
                                       (PVOID*)&Token,
                                       NULL);
    if (NT_SUCCESS(Status))
    {
        switch (TokenInformationClass)
        {
            case TokenOwner:
            {
                if (TokenInformationLength >= sizeof(TOKEN_OWNER))
                {
                    PTOKEN_OWNER to = (PTOKEN_OWNER)TokenInformation;
                    PSID InputSid = NULL, CapturedSid;
                    ULONG DefaultOwnerIndex;
 
                    _SEH2_TRY
                    {
                        InputSid = to->Owner;
                    }
                    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                    {
                        Status = _SEH2_GetExceptionCode();
                        _SEH2_YIELD(goto Cleanup);
                    }
                    _SEH2_END;
 
                    Status = SepCaptureSid(InputSid,
                                           PreviousMode,
                                           PagedPool,
                                           FALSE,
                                           &CapturedSid);
                    if (NT_SUCCESS(Status))
                    {
                        /* Lock the token */
                        SepAcquireTokenLockExclusive(Token);
 
                        /* Find the owner amongst the existing token user and groups */
                        Status = SepFindPrimaryGroupAndDefaultOwner(Token,
                                                                    NULL,
                                                                    CapturedSid,
                                                                    NULL,
                                                                    &DefaultOwnerIndex);
                        if (NT_SUCCESS(Status))
                        {
                            /* Found it */
                            Token->DefaultOwnerIndex = DefaultOwnerIndex;
                            ExAllocateLocallyUniqueId(&Token->ModifiedId);
                        }
 
                        /* Unlock the token */
                        SepReleaseTokenLock(Token);
 
                        SepReleaseSid(CapturedSid,
                                      PreviousMode,
                                      FALSE);
                    }
                }
                else
                {
                    Status = STATUS_INFO_LENGTH_MISMATCH;
                }
                break;
            }
 
            case TokenPrimaryGroup:
            {
                if (TokenInformationLength >= sizeof(TOKEN_PRIMARY_GROUP))
                {
                    PTOKEN_PRIMARY_GROUP tpg = (PTOKEN_PRIMARY_GROUP)TokenInformation;
                    ULONG AclSize;
                    ULONG_PTR PrimaryGroup;
                    PSID InputSid = NULL, CapturedSid;
                    ULONG PrimaryGroupIndex, NewDynamicLength;
 
                    _SEH2_TRY
                    {
                        InputSid = tpg->PrimaryGroup;
                    }
                    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                    {
                        Status = _SEH2_GetExceptionCode();
                        _SEH2_YIELD(goto Cleanup);
                    }
                    _SEH2_END;
 
                    Status = SepCaptureSid(InputSid,
                                           PreviousMode,
                                           PagedPool,
                                           FALSE,
                                           &CapturedSid);
                    if (NT_SUCCESS(Status))
                    {
                        /* Lock the token */
                        SepAcquireTokenLockExclusive(Token);
 
                        /*
                         * We can whack the token's primary group only if
                         * the charged dynamic space boundary allows us
                         * to do so. Exceeding this boundary and we're
                         * busted out.
                         */
                        AclSize = Token->DefaultDacl ? Token->DefaultDacl->AclSize : 0;
                        NewDynamicLength = RtlLengthSid(CapturedSid) + AclSize;
                        if (NewDynamicLength > Token->DynamicCharged)
                        {
                            SepReleaseTokenLock(Token);
                            SepReleaseSid(CapturedSid, PreviousMode, FALSE);
                            Status = STATUS_ALLOTTED_SPACE_EXCEEDED;
                            DPRINT1("NtSetInformationToken(): Couldn't assign new primary group, space exceeded (current length %u, new length %lu)\n",
                                    Token->DynamicCharged, NewDynamicLength);
                            goto Cleanup;
                        }
 
                        /*
                         * The dynamic part of the token may require a rebuild
                         * if the current dynamic area is too small. If not then
                         * we're pretty much good as is.
                         */
                        Status = SepRebuildDynamicPartOfToken(Token, NewDynamicLength);
                        if (NT_SUCCESS(Status))
                        {
                            /* Find the primary group amongst the existing token user and groups */
                            Status = SepFindPrimaryGroupAndDefaultOwner(Token,
                                                                        CapturedSid,
                                                                        NULL,
                                                                        &PrimaryGroupIndex,
                                                                        NULL);
                            if (NT_SUCCESS(Status))
                            {
                                /*
                                 * We have found it. Add the length of
                                 * the previous primary group SID to the
                                 * available dynamic area.
                                 */
                                Token->DynamicAvailable += RtlLengthSid(Token->PrimaryGroup);
 
                                /*
                                 * Move the default DACL if it's not at the
                                 * head of the dynamic part.
                                 */
                                if ((Token->DefaultDacl) &&
                                    ((PULONG)(Token->DefaultDacl) != Token->DynamicPart))
                                {
                                    RtlMoveMemory(Token->DynamicPart,
                                                  Token->DefaultDacl,
                                                  RtlLengthSid(Token->PrimaryGroup));
                                    Token->DefaultDacl = (PACL)(Token->DynamicPart);
                                }
 
                                /* Take away available space from the dynamic area */
                                Token->DynamicAvailable -= RtlLengthSid(Token->UserAndGroups[PrimaryGroupIndex].Sid);
 
                                /*
                                 * And assign the new primary group. For that
                                 * we have to make sure where the primary group
                                 * is going to stay in memory, so if this token
                                 * has a default DACL then add up its size with
                                 * the address of the dynamic part.
                                 */
                                PrimaryGroup = (ULONG_PTR)(Token->DynamicPart) + AclSize;
                                RtlCopySid(RtlLengthSid(Token->UserAndGroups[PrimaryGroupIndex].Sid),
                                           (PVOID)PrimaryGroup,
                                           Token->UserAndGroups[PrimaryGroupIndex].Sid);
                                Token->PrimaryGroup = (PSID)PrimaryGroup;
 
                                ExAllocateLocallyUniqueId(&Token->ModifiedId);
                            }
                        }
 
                        /* Unlock the token */
                        SepReleaseTokenLock(Token);
 
                        SepReleaseSid(CapturedSid,
                                      PreviousMode,
                                      FALSE);
                    }
                }
                else
                {
                    Status = STATUS_INFO_LENGTH_MISMATCH;
                }
                break;
            }
 
            case TokenDefaultDacl:
            {
                if (TokenInformationLength >= sizeof(TOKEN_DEFAULT_DACL))
                {
                    PTOKEN_DEFAULT_DACL tdd = (PTOKEN_DEFAULT_DACL)TokenInformation;
                    PACL InputAcl = NULL;
 
                    _SEH2_TRY
                    {
                        InputAcl = tdd->DefaultDacl;
                    }
                    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                    {
                        Status = _SEH2_GetExceptionCode();
                        _SEH2_YIELD(goto Cleanup);
                    }
                    _SEH2_END;
 
                    if (InputAcl != NULL)
                    {
                        PACL CapturedAcl;
 
                        /* Capture, validate, and copy the DACL */
                        Status = SepCaptureAcl(InputAcl,
                                               PreviousMode,
                                               PagedPool,
                                               TRUE,
                                               &CapturedAcl);
                        if (NT_SUCCESS(Status))
                        {
                            ULONG NewDynamicLength;
                            ULONG_PTR Acl;
 
                            /* Lock the token */
                            SepAcquireTokenLockExclusive(Token);
 
                            /*
                             * We can whack the token's default DACL only if
                             * the charged dynamic space boundary allows us
                             * to do so. Exceeding this boundary and we're
                             * busted out.
                             */
                            NewDynamicLength = CapturedAcl->AclSize + RtlLengthSid(Token->PrimaryGroup);
                            if (NewDynamicLength > Token->DynamicCharged)
                            {
                                SepReleaseTokenLock(Token);
                                SepReleaseAcl(CapturedAcl, PreviousMode, TRUE);
                                Status = STATUS_ALLOTTED_SPACE_EXCEEDED;
                                DPRINT1("NtSetInformationToken(): Couldn't assign new default DACL, space exceeded (current length %u, new length %lu)\n",
                                        Token->DynamicCharged, NewDynamicLength);
                                goto Cleanup;
                            }
 
                            /*
                             * The dynamic part of the token may require a rebuild
                             * if the current dynamic area is too small. If not then
                             * we're pretty much good as is.
                             */
                            Status = SepRebuildDynamicPartOfToken(Token, NewDynamicLength);
                            if (NT_SUCCESS(Status))
                            {
                                /*
                                 * Before setting up a new DACL for the
                                 * token object we add up the size of
                                 * the old DACL to the available dynamic
                                 * area
                                 */
                                if (Token->DefaultDacl)
                                {
                                    Token->DynamicAvailable += Token->DefaultDacl->AclSize;
                                }
 
                                /*
                                 * Move the primary group if it's not at the
                                 * head of the dynamic part.
                                 */
                                if ((PULONG)(Token->PrimaryGroup) != Token->DynamicPart)
                                {
                                    RtlMoveMemory(Token->DynamicPart,
                                                  Token->PrimaryGroup,
                                                  RtlLengthSid(Token->PrimaryGroup));
                                    Token->PrimaryGroup = (PSID)(Token->DynamicPart);
                                }
 
                                /* Take away available space from the dynamic area */
                                Token->DynamicAvailable -= CapturedAcl->AclSize;
 
                                /* Set the new dacl */
                                Acl = (ULONG_PTR)(Token->DynamicPart) + RtlLengthSid(Token->PrimaryGroup);
                                RtlCopyMemory((PVOID)Acl,
                                              CapturedAcl,
                                              CapturedAcl->AclSize);
                                Token->DefaultDacl = (PACL)Acl;
 
                                ExAllocateLocallyUniqueId(&Token->ModifiedId);
                            }
 
                            /* Unlock the token and release the ACL */
                            SepReleaseTokenLock(Token);
                            SepReleaseAcl(CapturedAcl, PreviousMode, TRUE);
                        }
                    }
                    else
                    {
                        /* Lock the token */
                        SepAcquireTokenLockExclusive(Token);
 
                        /* Clear the default dacl if present */
                        if (Token->DefaultDacl != NULL)
                        {
                            Token->DynamicAvailable += Token->DefaultDacl->AclSize;
                            RtlZeroMemory(Token->DefaultDacl, Token->DefaultDacl->AclSize);
                            Token->DefaultDacl = NULL;
 
                            ExAllocateLocallyUniqueId(&Token->ModifiedId);
                        }
 
                        /* Unlock the token */
                        SepReleaseTokenLock(Token);
                    }
                }
                else
                {
                    Status = STATUS_INFO_LENGTH_MISMATCH;
                }
                break;
            }
 
            case TokenSessionId:
            {
                ULONG SessionId = 0;
 
                _SEH2_TRY
                {
                    /* Buffer size was already verified, no need to check here again */
                    SessionId = *(PULONG)TokenInformation;
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                    _SEH2_YIELD(goto Cleanup);
                }
                _SEH2_END;
 
                /* Check for TCB privilege */
                if (!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode))
                {
                    Status = STATUS_PRIVILEGE_NOT_HELD;
                    break;
                }
 
                /* Lock the token */
                SepAcquireTokenLockExclusive(Token);
 
                Token->SessionId = SessionId;
                ExAllocateLocallyUniqueId(&Token->ModifiedId);
 
                /* Unlock the token */
                SepReleaseTokenLock(Token);
 
                break;
            }
 
            case TokenSessionReference:
            {
                ULONG SessionReference;
 
                _SEH2_TRY
                {
                    /* Buffer size was already verified, no need to check here again */
                    SessionReference = *(PULONG)TokenInformation;
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                    _SEH2_YIELD(goto Cleanup);
                }
                _SEH2_END;
 
                /* Check for TCB privilege */
                if (!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode))
                {
                    Status = STATUS_PRIVILEGE_NOT_HELD;
                    goto Cleanup;
                }
 
                /* Check if it is 0 */
                if (SessionReference == 0)
                {
                    ULONG OldTokenFlags;
 
                    /* Lock the token */
                    SepAcquireTokenLockExclusive(Token);
 
                    /* Atomically set the flag in the token */
                    OldTokenFlags = RtlInterlockedSetBits(&Token->TokenFlags,
                                                          TOKEN_SESSION_NOT_REFERENCED);
                    /*
                     * If the flag was already set, do not dereference again
                     * the logon session. Use SessionReference as an indicator
                     * to know whether to really dereference the session.
                     */
                    if (OldTokenFlags == Token->TokenFlags)
                        SessionReference = ULONG_MAX;
 
                    /*
                     * Otherwise if the flag was never set but just for this first time then
                     * remove the referenced logon session data from the token and dereference
                     * the logon session when needed.
                     */
                    if (SessionReference == 0)
                    {
                        SepRmRemoveLogonSessionFromToken(Token);
                        SepRmDereferenceLogonSession(&Token->AuthenticationId);
                    }
 
                    /* Unlock the token */
                    SepReleaseTokenLock(Token);
                }
                break;
            }
 
            case TokenAuditPolicy:
            {
                PTOKEN_AUDIT_POLICY_INFORMATION PolicyInformation =
                    (PTOKEN_AUDIT_POLICY_INFORMATION)TokenInformation;
                SEP_AUDIT_POLICY AuditPolicy;
                ULONG i;
 
                _SEH2_TRY
                {
                    ProbeForRead(PolicyInformation,
                                 FIELD_OFFSET(TOKEN_AUDIT_POLICY_INFORMATION,
                                              Policies[PolicyInformation->PolicyCount]),
                                 sizeof(ULONG));
 
                    /* Loop all policies in the structure */
                    for (i = 0; i < PolicyInformation->PolicyCount; i++)
                    {
                        /* Set the corresponding bits in the packed structure */
                        switch (PolicyInformation->Policies[i].Category)
                        {
                            case AuditCategorySystem:
                                AuditPolicy.PolicyElements.System = PolicyInformation->Policies[i].Value;
                                break;
 
                            case AuditCategoryLogon:
                                AuditPolicy.PolicyElements.Logon = PolicyInformation->Policies[i].Value;
                                break;
 
                            case AuditCategoryObjectAccess:
                                AuditPolicy.PolicyElements.ObjectAccess = PolicyInformation->Policies[i].Value;
                                break;
 
                            case AuditCategoryPrivilegeUse:
                                AuditPolicy.PolicyElements.PrivilegeUse = PolicyInformation->Policies[i].Value;
                                break;
 
                            case AuditCategoryDetailedTracking:
                                AuditPolicy.PolicyElements.DetailedTracking = PolicyInformation->Policies[i].Value;
                                break;
 
                            case AuditCategoryPolicyChange:
                                AuditPolicy.PolicyElements.PolicyChange = PolicyInformation->Policies[i].Value;
                                break;
 
                            case AuditCategoryAccountManagement:
                                AuditPolicy.PolicyElements.AccountManagement = PolicyInformation->Policies[i].Value;
                                break;
 
                            case AuditCategoryDirectoryServiceAccess:
                                AuditPolicy.PolicyElements.DirectoryServiceAccess = PolicyInformation->Policies[i].Value;
                                break;
 
                            case AuditCategoryAccountLogon:
                                AuditPolicy.PolicyElements.AccountLogon = PolicyInformation->Policies[i].Value;
                                break;
                        }
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                    _SEH2_YIELD(goto Cleanup);
                }
                _SEH2_END;
 
                /* Check for TCB privilege */
                if (!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode))
                {
                    Status = STATUS_PRIVILEGE_NOT_HELD;
                    break;
                }
 
                /* Lock the token */
                SepAcquireTokenLockExclusive(Token);
 
                /* Set the new audit policy */
                Token->AuditPolicy = AuditPolicy;
                ExAllocateLocallyUniqueId(&Token->ModifiedId);
 
                /* Unlock the token */
                SepReleaseTokenLock(Token);
 
                break;
            }
 
            case TokenOrigin:
            {
                TOKEN_ORIGIN TokenOrigin;
 
                _SEH2_TRY
                {
                    /* Copy the token origin */
                    TokenOrigin = *(PTOKEN_ORIGIN)TokenInformation;
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                    _SEH2_YIELD(goto Cleanup);
                }
                _SEH2_END;
 
                /* Check for TCB privilege */
                if (!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode))
                {
                    Status = STATUS_PRIVILEGE_NOT_HELD;
                    break;
                }
 
                /* Lock the token */
                SepAcquireTokenLockExclusive(Token);
 
                /* Check if there is no token origin set yet */
                if (RtlIsZeroLuid(&Token->OriginatingLogonSession))
                {
                    /* Set the token origin */
                    Token->OriginatingLogonSession =
                        TokenOrigin.OriginatingLogonSession;
 
                    ExAllocateLocallyUniqueId(&Token->ModifiedId);
                }
 
                /* Unlock the token */
                SepReleaseTokenLock(Token);
 
                break;
            }
 
            default:
            {
                DPRINT1("Invalid TokenInformationClass: 0x%lx\n",
                        TokenInformationClass);
                Status = STATUS_INVALID_INFO_CLASS;
                break;
            }
        }
Cleanup:
        ObDereferenceObject(Token);
    }
 
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtSetInformationToken failed with Status 0x%lx\n", Status);
    }
 
    return Status;
}

SeCaptureSecurityDescriptor()

NTKERNELAPI NTSTATUS NTAPI SeCaptureSecurityDescriptor	(	_In_ PSECURITY_DESCRIPTOR	_OriginalSecurityDescriptor,
		_In_ KPROCESSOR_MODE	CurrentMode,
		_In_ POOL_TYPE	PoolType,
		_In_ BOOLEAN	CaptureIfKernel,
		_Out_ PSECURITY_DESCRIPTOR *	CapturedSecurityDescriptor
	)

Captures a security descriptor.

Parameters

[in]	_OriginalSecurityDescriptor	An already existing and valid security descriptor to be captured.
[in]	CurrentMode	Processor level access mode.
[in]	PoolType	Pool type to be used when allocating the captured buffer.
[in]	CaptureIfKernel	Set this to TRUE if capturing is done within the kernel.
[out]	CapturedSecurityDescriptor	The captured security descriptor.

Returns

Returns STATUS_SUCCESS if the operations have been completed successfully and that the security descriptor has been captured. STATUS_UNKNOWN_REVISION is returned if the security descriptor has an unknown revision. STATUS_INSUFFICIENT_RESOURCES is returned if memory pool allocation for the captured buffer has failed. A failure NTSTATUS code is returned otherwise.

Definition at line 386 of file sd.c.

{
    PISECURITY_DESCRIPTOR OriginalDescriptor = _OriginalSecurityDescriptor;
    SECURITY_DESCRIPTOR DescriptorCopy;
    PISECURITY_DESCRIPTOR_RELATIVE NewDescriptor;
    ULONG OwnerSAC = 0, GroupSAC = 0;
    ULONG OwnerSize = 0, GroupSize = 0;
    ULONG SaclSize = 0, DaclSize = 0;
    ULONG DescriptorSize = 0;
    ULONG Offset;
 
    if (!OriginalDescriptor)
    {
        /* Nothing to do... */
        *CapturedSecurityDescriptor = NULL;
        return STATUS_SUCCESS;
    }
 
    /* Quick path */
    if (CurrentMode == KernelMode && !CaptureIfKernel)
    {
        /* Check descriptor version */
        if (OriginalDescriptor->Revision != SECURITY_DESCRIPTOR_REVISION1)
        {
            return STATUS_UNKNOWN_REVISION;
        }
 
        *CapturedSecurityDescriptor = _OriginalSecurityDescriptor;
        return STATUS_SUCCESS;
    }
 
    _SEH2_TRY
    {
        if (CurrentMode != KernelMode)
        {
            ProbeForRead(OriginalDescriptor,
                         sizeof(SECURITY_DESCRIPTOR_RELATIVE),
                         sizeof(ULONG));
        }
 
        /* Check the descriptor version */
        if (OriginalDescriptor->Revision != SECURITY_DESCRIPTOR_REVISION1)
        {
            _SEH2_YIELD(return STATUS_UNKNOWN_REVISION);
        }
 
        if (CurrentMode != KernelMode)
        {
            /* Get the size of the descriptor */
            DescriptorSize = (OriginalDescriptor->Control & SE_SELF_RELATIVE) ?
                sizeof(SECURITY_DESCRIPTOR_RELATIVE) : sizeof(SECURITY_DESCRIPTOR);
 
            /* Probe the entire security descriptor structure. The SIDs
             * and ACLs will be probed and copied later though */
            ProbeForRead(OriginalDescriptor, DescriptorSize, sizeof(ULONG));
        }
 
        /* Now capture all fields and convert to an absolute descriptor */
        DescriptorCopy.Revision = OriginalDescriptor->Revision;
        DescriptorCopy.Sbz1 = OriginalDescriptor->Sbz1;
        DescriptorCopy.Control = OriginalDescriptor->Control & ~SE_SELF_RELATIVE;
        DescriptorCopy.Owner = SepGetOwnerFromDescriptor(OriginalDescriptor);
        DescriptorCopy.Group = SepGetGroupFromDescriptor(OriginalDescriptor);
        DescriptorCopy.Sacl = SepGetSaclFromDescriptor(OriginalDescriptor);
        DescriptorCopy.Dacl = SepGetDaclFromDescriptor(OriginalDescriptor);
        DescriptorSize = sizeof(SECURITY_DESCRIPTOR_RELATIVE);
 
        /* Determine owner and group sizes */
        OwnerSize = DetermineSIDSize(DescriptorCopy.Owner, &OwnerSAC, CurrentMode);
        DescriptorSize += ROUND_UP(OwnerSize, sizeof(ULONG));
        GroupSize = DetermineSIDSize(DescriptorCopy.Group, &GroupSAC, CurrentMode);
        DescriptorSize += ROUND_UP(GroupSize, sizeof(ULONG));
 
        /* Determine the size of the ACLs */
        if (DescriptorCopy.Control & SE_SACL_PRESENT)
        {
            /* Get the size and probe if user mode */
            SaclSize = DetermineACLSize(DescriptorCopy.Sacl, CurrentMode);
            DescriptorSize += ROUND_UP(SaclSize, sizeof(ULONG));
        }
 
        if (DescriptorCopy.Control & SE_DACL_PRESENT)
        {
            /* Get the size and probe if user mode */
            DaclSize = DetermineACLSize(DescriptorCopy.Dacl, CurrentMode);
            DescriptorSize += ROUND_UP(DaclSize, sizeof(ULONG));
        }
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        _SEH2_YIELD(return _SEH2_GetExceptionCode());
    }
    _SEH2_END;
 
    /*
     * Allocate enough memory to store a complete copy of a self-relative
     * security descriptor
     */
    NewDescriptor = ExAllocatePoolWithTag(PoolType,
                                          DescriptorSize,
                                          TAG_SD);
    if (!NewDescriptor) return STATUS_INSUFFICIENT_RESOURCES;
 
    RtlZeroMemory(NewDescriptor, DescriptorSize);
    NewDescriptor->Revision = DescriptorCopy.Revision;
    NewDescriptor->Sbz1 = DescriptorCopy.Sbz1;
    NewDescriptor->Control = DescriptorCopy.Control | SE_SELF_RELATIVE;
 
    _SEH2_TRY
    {
        /*
         * Setup the offsets and copy the SIDs and ACLs to the new
         * self-relative security descriptor. Probing the pointers is not
         * neccessary anymore as we did that when collecting the sizes!
         * Make sure to validate the SIDs and ACLs *again* as they could have
         * been modified in the meanwhile!
         */
        Offset = sizeof(SECURITY_DESCRIPTOR_RELATIVE);
 
        if (DescriptorCopy.Owner)
        {
            if (!RtlValidSid(DescriptorCopy.Owner)) RtlRaiseStatus(STATUS_INVALID_SID);
            NewDescriptor->Owner = Offset;
            RtlCopyMemory((PUCHAR)NewDescriptor + Offset,
                          DescriptorCopy.Owner,
                          OwnerSize);
            Offset += ROUND_UP(OwnerSize, sizeof(ULONG));
        }
 
        if (DescriptorCopy.Group)
        {
            if (!RtlValidSid(DescriptorCopy.Group)) RtlRaiseStatus(STATUS_INVALID_SID);
            NewDescriptor->Group = Offset;
            RtlCopyMemory((PUCHAR)NewDescriptor + Offset,
                          DescriptorCopy.Group,
                          GroupSize);
            Offset += ROUND_UP(GroupSize, sizeof(ULONG));
        }
 
        if (DescriptorCopy.Sacl)
        {
            if (!RtlValidAcl(DescriptorCopy.Sacl)) RtlRaiseStatus(STATUS_INVALID_ACL);
            NewDescriptor->Sacl = Offset;
            RtlCopyMemory((PUCHAR)NewDescriptor + Offset,
                          DescriptorCopy.Sacl,
                          SaclSize);
            Offset += ROUND_UP(SaclSize, sizeof(ULONG));
        }
 
        if (DescriptorCopy.Dacl)
        {
            if (!RtlValidAcl(DescriptorCopy.Dacl)) RtlRaiseStatus(STATUS_INVALID_ACL);
            NewDescriptor->Dacl = Offset;
            RtlCopyMemory((PUCHAR)NewDescriptor + Offset,
                          DescriptorCopy.Dacl,
                          DaclSize);
            Offset += ROUND_UP(DaclSize, sizeof(ULONG));
        }
 
        /* Make sure the size was correct */
        ASSERT(Offset == DescriptorSize);
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        /* We failed to copy the data to the new descriptor */
        ExFreePoolWithTag(NewDescriptor, TAG_SD);
        _SEH2_YIELD(return _SEH2_GetExceptionCode());
    }
    _SEH2_END;
 
    /*
     * We're finally done!
     * Copy the pointer to the captured descriptor to to the caller.
     */
    *CapturedSecurityDescriptor = NewDescriptor;
    return STATUS_SUCCESS;
}

Referenced by NtOpenObjectAuditAlarm(), NtSetSecurityObject(), ObpCaptureObjectCreateInformation(), ProbeAndCaptureObjectAttributes(), SepAccessCheck(), and SepAccessCheckAndAuditAlarm().

SeCreateAccessState()

NTKERNELAPI NTSTATUS NTAPI SeCreateAccessState	(	_In_ PACCESS_STATE	AccessState,
		_In_ PAUX_ACCESS_DATA	AuxData,
		_In_ ACCESS_MASK	Access,
		_In_ PGENERIC_MAPPING	GenericMapping
	)

SeDeleteAccessState()

NTKERNELAPI VOID NTAPI SeDeleteAccessState

(

_In_ PACCESS_STATE

AccessState

)

Deletes an allocated access state from the memory.

Parameters

[in]

AccessState

A valid access state.

Returns

Nothing.

Definition at line 150 of file access.c.

{
    PAUX_ACCESS_DATA AuxData;
    PAGED_CODE();
 
    /* Get the Auxiliary Data */
    AuxData = AccessState->AuxData;
 
    /* Deallocate Privileges */
    if (AccessState->PrivilegesAllocated)
        ExFreePoolWithTag(AuxData->PrivilegesUsed, TAG_PRIVILEGE_SET);
 
    /* Deallocate Name and Type Name */
    if (AccessState->ObjectName.Buffer)
    {
        ExFreePool(AccessState->ObjectName.Buffer);
    }
 
    if (AccessState->ObjectTypeName.Buffer)
    {
        ExFreePool(AccessState->ObjectTypeName.Buffer);
    }
 
    /* Release the Subject Context */
    SeReleaseSubjectContext(&AccessState->SubjectSecurityContext);
}

Referenced by NtOpenProcess(), NtOpenThread(), ObDuplicateObject(), ObInsertObject(), ObOpenObjectByName(), ObOpenObjectByPointer(), ObReferenceObjectByName(), PspCreateProcess(), PspCreateThread(), and START_TEST().

SeReleaseSecurityDescriptor()

NTKERNELAPI NTSTATUS NTAPI SeReleaseSecurityDescriptor	(	_In_ PSECURITY_DESCRIPTOR	CapturedSecurityDescriptor,
		_In_ KPROCESSOR_MODE	CurrentMode,
		_In_ BOOLEAN	CaptureIfKernelMode
	)

Releases a captured security descriptor buffer.

Parameters

[in]	CapturedSecurityDescriptor	The captured security descriptor to be freed.
[in]	CurrentMode	Processor level access mode.
[in]	CaptureIfKernelMode	Set this to TRUE if the releasing is to be done within the kernel.

Returns

Returns STATUS_SUCCESS.

Definition at line 760 of file sd.c.

{
    PAGED_CODE();
 
    /*
     * WARNING! You need to call this function with the same value for CurrentMode
     * and CaptureIfKernelMode that you previously passed to
     * SeCaptureSecurityDescriptor() in order to avoid memory leaks!
     */
    if (CapturedSecurityDescriptor != NULL &&
        (CurrentMode != KernelMode ||
         (CurrentMode == KernelMode && CaptureIfKernelMode)))
    {
        /* Only delete the descriptor when SeCaptureSecurityDescriptor() allocated one! */
        ExFreePoolWithTag(CapturedSecurityDescriptor, TAG_SD);
    }
 
    return STATUS_SUCCESS;
}

Referenced by NtOpenObjectAuditAlarm(), NtSetSecurityObject(), ObInsertObject(), ObpReleaseObjectCreateInformation(), ReleaseCapturedObjectAttributes(), SepAccessCheck(), and SepAccessCheckAndAuditAlarm().

SeTokenImpersonationLevel()

NTKERNELAPI SECURITY_IMPERSONATION_LEVEL NTAPI SeTokenImpersonationLevel

(

_In_ PACCESS_TOKEN

Token

)

Gathers the security impersonation level of an access token.

Parameters

[in]

Token

A valid access token where the impersonation level has to be gathered.

Returns

Returns the security impersonation level from a valid token.

Definition at line 2059 of file token.c.

{
    PAGED_CODE();
 
    return ((PTOKEN)Token)->ImpersonationLevel;
}

Referenced by PsAssignImpersonationToken().

ZwAccessCheck()

NTSYSAPI NTSTATUS NTAPI ZwAccessCheck	(	_In_ PSECURITY_DESCRIPTOR	SecurityDescriptor,
		_In_ HANDLE	ClientToken,
		_In_ ACCESS_MASK	DesiredAccess,
		_In_ PGENERIC_MAPPING	GenericMapping,
		_Out_writes_bytes_ *PrivilegeSetLength PPRIVILEGE_SET	PrivilegeSet,
		_Out_ PULONG	PrivilegeSetLength,
		_Out_ PACCESS_MASK	GrantedAccess,
		_Out_ PNTSTATUS	AccessStatus
	)

ZwAdjustGroupsToken()

NTSYSAPI NTSTATUS NTAPI ZwAdjustGroupsToken	(	_In_ HANDLE	TokenHandle,
		_In_ BOOLEAN	ResetToDefault,
		_In_ PTOKEN_GROUPS	NewState,
		_In_ ULONG	BufferLength,
		_Out_opt_ PTOKEN_GROUPS	PreviousState,
		_Out_ PULONG	ReturnLength
	)

ZwAdjustPrivilegesToken()

_Must_inspect_result_ NTSYSAPI NTSTATUS NTAPI ZwAdjustPrivilegesToken	(	_In_ HANDLE	TokenHandle,
		_In_ BOOLEAN	DisableAllPrivileges,
		_In_opt_ PTOKEN_PRIVILEGES	NewState,
		_In_ ULONG	BufferLength,
		_Out_writes_bytes_to_opt_(BufferLength, *ReturnLength) PTOKEN_PRIVILEGES	PreviousState,
		_When_(PreviousState !=NULL, _Out_) PULONG	ReturnLength
	)

Referenced by RtlAcquirePrivilege(), RtlAdjustPrivilege(), RtlpSysVolTakeOwnership(), RtlReleasePrivilege(), and RtlRemovePrivileges().

ZwAllocateLocallyUniqueId()

NTSYSAPI NTSTATUS NTAPI ZwAllocateLocallyUniqueId

(

_Out_ LUID *

LocallyUniqueId

)

Referenced by CreateInitialSystemToken().

ZwAllocateUuids()

NTSYSAPI NTSTATUS NTAPI ZwAllocateUuids	(	_Out_ PULARGE_INTEGER	Time,
		_Out_ PULONG	Range,
		_Out_ PULONG	Sequence,
		_Out_ PUCHAR	Seed
	)

ZwCreateToken()

NTSYSAPI NTSTATUS NTAPI ZwCreateToken	(	_Out_ PHANDLE	TokenHandle,
		_In_ ACCESS_MASK	DesiredAccess,
		_In_ POBJECT_ATTRIBUTES	ObjectAttributes,
		_In_ TOKEN_TYPE	TokenType,
		_In_ PLUID	AuthenticationId,
		_In_ PLARGE_INTEGER	ExpirationTime,
		_In_ PTOKEN_USER	TokenUser,
		_In_ PTOKEN_GROUPS	TokenGroups,
		_In_ PTOKEN_PRIVILEGES	TokenPrivileges,
		_In_ PTOKEN_OWNER	TokenOwner,
		_In_ PTOKEN_PRIMARY_GROUP	TokenPrimaryGroup,
		_In_ PTOKEN_DEFAULT_DACL	TokenDefaultDacl,
		_In_ PTOKEN_SOURCE	TokenSource
	)

Referenced by CreateInitialSystemToken().

ZwImpersonateAnonymousToken()

NTSYSAPI NTSTATUS NTAPI ZwImpersonateAnonymousToken

(

_In_ HANDLE

Thread

)

ZwOpenObjectAuditAlarm()

NTSYSAPI NTSTATUS NTAPI ZwOpenObjectAuditAlarm	(	_In_ PUNICODE_STRING	SubsystemName,
		_In_ PVOID	HandleId,
		_In_ PUNICODE_STRING	ObjectTypeName,
		_In_ PUNICODE_STRING	ObjectName,
		_In_ PSECURITY_DESCRIPTOR	SecurityDescriptor,
		_In_ HANDLE	ClientToken,
		_In_ ULONG	DesiredAccess,
		_In_ ULONG	GrantedAccess,
		_In_ PPRIVILEGE_SET	Privileges,
		_In_ BOOLEAN	ObjectCreation,
		_In_ BOOLEAN	AccessGranted,
		_Out_ PBOOLEAN	GenerateOnClose
	)

ZwPrivilegeCheck()

NTSYSAPI NTSTATUS NTAPI ZwPrivilegeCheck	(	_In_ HANDLE	ClientToken,
		_In_ PPRIVILEGE_SET	RequiredPrivileges,
		_In_ PBOOLEAN	Result
	)

ZwPrivilegedServiceAuditAlarm()

NTSYSAPI NTSTATUS NTAPI ZwPrivilegedServiceAuditAlarm	(	_In_ PUNICODE_STRING	SubsystemName,
		_In_ PUNICODE_STRING	ServiceName,
		_In_ HANDLE	ClientToken,
		_In_ PPRIVILEGE_SET	Privileges,
		_In_ BOOLEAN	AccessGranted
	)

ZwPrivilegeObjectAuditAlarm()

NTSYSAPI NTSTATUS NTAPI ZwPrivilegeObjectAuditAlarm	(	_In_ PUNICODE_STRING	SubsystemName,
		_In_ PVOID	HandleId,
		_In_ HANDLE	ClientToken,
		_In_ ULONG	DesiredAccess,
		_In_ PPRIVILEGE_SET	Privileges,
		_In_ BOOLEAN	AccessGranted
	)

ZwSetInformationToken()

NTSYSAPI NTSTATUS NTAPI ZwSetInformationToken	(	_In_ HANDLE	TokenHandle,
		_In_ TOKEN_INFORMATION_CLASS	TokenInformationClass,
		_Out_ PVOID	TokenInformation,
		_In_ ULONG	TokenInformationLength
	)

Variable Documentation

DesiredAccess

_In_ ACCESS_MASK DesiredAccess

Definition at line 408 of file sefuncs.h.

EffectiveOnly

_Must_inspect_result_ _In_opt_ PACCESS_TOKEN _In_ BOOLEAN _In_ BOOLEAN EffectiveOnly

Definition at line 410 of file sefuncs.h.

Referenced by GetProcessLuid(), NtCloseObjectAuditAlarm(), NtDuplicateToken(), NtOpenThreadTokenEx(), ObpReferenceDeviceMap(), PsImpersonateClient(), PsReferenceEffectiveToken(), PsReferenceImpersonationToken(), SeCaptureSubjectContextEx(), SeImpersonateClientEx(), SepDuplicateToken(), and SepOpenThreadToken().

HandleAttributes

_In_ ACCESS_MASK _In_ ULONG HandleAttributes

Definition at line 453 of file sefuncs.h.

Length

_In_ TOKEN_INFORMATION_CLASS _In_ ULONG Length

Definition at line 493 of file sefuncs.h.

NewTokenHandle

_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES _In_ BOOLEAN _In_ TOKEN_TYPE _Out_ PHANDLE NewTokenHandle

Definition at line 412 of file sefuncs.h.

Referenced by CreateRestrictedToken(), NtDuplicateToken(), and NtFilterToken().

ObjectAttributes

_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES ObjectAttributes

Definition at line 409 of file sefuncs.h.

ResultLength

_In_ TOKEN_INFORMATION_CLASS _In_ ULONG _Out_ PULONG ResultLength

Definition at line 494 of file sefuncs.h.

ReturnLength

_In_ TOKEN_INFORMATION_CLASS _In_ ULONG _Out_ PULONG ReturnLength

Definition at line 320 of file sefuncs.h.

TokenHandle

_In_ ACCESS_MASK _In_ ULONG _Out_ PHANDLE TokenHandle

Definition at line 444 of file sefuncs.h.

TokenInformationClass

_In_ TOKEN_INFORMATION_CLASS TokenInformationClass

Definition at line 317 of file sefuncs.h.

Referenced by GetTokenInformation(), NtQueryInformationToken(), NtSetInformationToken(), SeQueryInformationToken(), and SetTokenInformation().

TokenInformationLength

_In_ TOKEN_INFORMATION_CLASS _In_ ULONG TokenInformationLength

Definition at line 319 of file sefuncs.h.

Referenced by GetTokenInformation(), NtQueryInformationToken(), NtSetInformationToken(), and SetTokenInformation().

TokenType

_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES _In_ BOOLEAN _In_ TOKEN_TYPE TokenType

Definition at line 411 of file sefuncs.h.

Referenced by CreateProcessAsUserCommon(), DuplicateTokenEx(), ImpersonateLoggedOnUser(), ImpersonatePrinterClient(), NpFreeClientSecurityContext(), NtCreateToken(), NtDuplicateToken(), NtQueryInformationToken(), PsReferenceEffectiveToken(), QueryTokenTypeTests(), SeCreateClientSecurity(), SepCreateClientSecurity(), SepCreateToken(), SepDuplicateToken(), SeQueryInformationToken(), test_CreateRestrictedToken(), TestsSeQueryInformationToken(), validate_impersonation_token(), and WhoamiGetTokenInfo().