token.c File Reference

#include <ntoskrnl.h>
#include <debug.h>
#include <ntlsa.h>

Include dependency graph for token.c:

Go to the source code of this file.

Classes
struct	_TOKEN_AUDIT_POLICY_INFORMATION

Macros
#define	NDEBUG

Typedefs
typedef struct _TOKEN_AUDIT_POLICY_INFORMATION	TOKEN_AUDIT_POLICY_INFORMATION
typedef struct _TOKEN_AUDIT_POLICY_INFORMATION *	PTOKEN_AUDIT_POLICY_INFORMATION

Functions
static NTSTATUS	SepCompareTokens (IN PTOKEN FirstToken, IN PTOKEN SecondToken, OUT PBOOLEAN Equal)
static VOID	SepUpdateSinglePrivilegeFlagToken (_Inout_ PTOKEN Token, _In_ ULONG Index)
static VOID	SepUpdatePrivilegeFlagsToken (_Inout_ PTOKEN Token)
static VOID	SepRemovePrivilegeToken (_Inout_ PTOKEN Token, _In_ ULONG Index)
VOID NTAPI	SepFreeProxyData (PVOID ProxyData)
NTSTATUS NTAPI	SepCopyProxyData (PVOID *Dest, PVOID Src)
NTSTATUS NTAPI	SeExchangePrimaryToken (_In_ PEPROCESS Process, _In_ PACCESS_TOKEN NewAccessToken, _Out_ PACCESS_TOKEN *OldAccessToken)
VOID NTAPI	SeDeassignPrimaryToken (PEPROCESS Process)
static ULONG	RtlLengthSidAndAttributes (ULONG Count, PSID_AND_ATTRIBUTES Src)
static NTSTATUS	SepFindPrimaryGroupAndDefaultOwner (_In_ PTOKEN Token, _In_ PSID PrimaryGroup, _In_opt_ PSID DefaultOwner, _Out_opt_ PULONG PrimaryGroupIndex, _Out_opt_ PULONG DefaultOwnerIndex)
NTSTATUS NTAPI	SepDuplicateToken (_In_ PTOKEN Token, _In_opt_ POBJECT_ATTRIBUTES ObjectAttributes, _In_ BOOLEAN EffectiveOnly, _In_ TOKEN_TYPE TokenType, _In_ SECURITY_IMPERSONATION_LEVEL Level, _In_ KPROCESSOR_MODE PreviousMode, _Out_ PTOKEN *NewAccessToken)
NTSTATUS NTAPI	SeSubProcessToken (IN PTOKEN ParentToken, OUT PTOKEN *Token, IN BOOLEAN InUse, IN ULONG SessionId)
NTSTATUS NTAPI	SeIsTokenChild (IN PTOKEN Token, OUT PBOOLEAN IsChild)
NTSTATUS NTAPI	SeIsTokenSibling (IN PTOKEN Token, OUT PBOOLEAN IsSibling)
NTSTATUS NTAPI	SeCopyClientToken (IN PACCESS_TOKEN Token, IN SECURITY_IMPERSONATION_LEVEL Level, IN KPROCESSOR_MODE PreviousMode, OUT PACCESS_TOKEN *NewToken)
VOID NTAPI	SepDeleteToken (PVOID ObjectBody)
VOID INIT_FUNCTION NTAPI	SepInitializeTokenImplementation (VOID)
VOID NTAPI	SeAssignPrimaryToken (IN PEPROCESS Process, IN PTOKEN Token)
NTSTATUS NTAPI	SepCreateToken (_Out_ PHANDLE TokenHandle, _In_ KPROCESSOR_MODE PreviousMode, _In_ ACCESS_MASK DesiredAccess, _In_opt_ POBJECT_ATTRIBUTES ObjectAttributes, _In_ TOKEN_TYPE TokenType, _In_ SECURITY_IMPERSONATION_LEVEL ImpersonationLevel, _In_ PLUID AuthenticationId, _In_ PLARGE_INTEGER ExpirationTime, _In_ PSID_AND_ATTRIBUTES User, _In_ ULONG GroupCount, _In_ PSID_AND_ATTRIBUTES Groups, _In_ ULONG GroupsLength, _In_ ULONG PrivilegeCount, _In_ PLUID_AND_ATTRIBUTES Privileges, _In_opt_ PSID Owner, _In_ PSID PrimaryGroup, _In_opt_ PACL DefaultDacl, _In_ PTOKEN_SOURCE TokenSource, _In_ BOOLEAN SystemToken)
PTOKEN NTAPI	SepCreateSystemProcessToken (VOID)
NTSTATUS NTAPI	SeFilterToken (IN PACCESS_TOKEN ExistingToken, IN ULONG Flags, IN PTOKEN_GROUPS SidsToDisable OPTIONAL, IN PTOKEN_PRIVILEGES PrivilegesToDelete OPTIONAL, IN PTOKEN_GROUPS RestrictedSids OPTIONAL, OUT PACCESS_TOKEN *FilteredToken)
NTSTATUS NTAPI	SeQueryInformationToken (IN PACCESS_TOKEN AccessToken, IN TOKEN_INFORMATION_CLASS TokenInformationClass, OUT PVOID *TokenInformation)
NTSTATUS NTAPI	SeQuerySessionIdToken (IN PACCESS_TOKEN Token, IN PULONG pSessionId)
NTSTATUS NTAPI	SeQueryAuthenticationIdToken (IN PACCESS_TOKEN Token, OUT PLUID LogonId)
SECURITY_IMPERSONATION_LEVEL NTAPI	SeTokenImpersonationLevel (IN PACCESS_TOKEN Token)
TOKEN_TYPE NTAPI	SeTokenType (IN PACCESS_TOKEN Token)
BOOLEAN NTAPI	SeTokenIsAdmin (IN PACCESS_TOKEN Token)
BOOLEAN NTAPI	SeTokenIsRestricted (IN PACCESS_TOKEN Token)
BOOLEAN NTAPI	SeTokenIsWriteRestricted (IN PACCESS_TOKEN Token)
_Must_inspect_result_ __kernel_entry NTSTATUS NTAPI	NtQueryInformationToken (_In_ HANDLE TokenHandle, _In_ TOKEN_INFORMATION_CLASS TokenInformationClass, _Out_writes_bytes_to_opt_(TokenInformationLength, *ReturnLength) PVOID TokenInformation, _In_ ULONG TokenInformationLength, _Out_ PULONG ReturnLength)
_Must_inspect_result_ __kernel_entry NTSTATUS NTAPI	NtSetInformationToken (_In_ HANDLE TokenHandle, _In_ TOKEN_INFORMATION_CLASS TokenInformationClass, _In_reads_bytes_(TokenInformationLength) PVOID TokenInformation, _In_ ULONG TokenInformationLength)
_Must_inspect_result_ __kernel_entry 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)
NTSTATUS NTAPI	NtAdjustGroupsToken (IN HANDLE TokenHandle, IN BOOLEAN ResetToDefault, IN PTOKEN_GROUPS NewState, IN ULONG BufferLength, OUT PTOKEN_GROUPS PreviousState OPTIONAL, OUT PULONG ReturnLength)
static NTSTATUS	SepAdjustPrivileges (_Inout_ PTOKEN Token, _In_ BOOLEAN DisableAllPrivileges, _In_opt_ PLUID_AND_ATTRIBUTES NewState, _In_ ULONG NewStateCount, _Out_opt_ PTOKEN_PRIVILEGES PreviousState, _In_ BOOLEAN ApplyChanges, _Out_ PULONG ChangedPrivileges, _Out_ PBOOLEAN ChangesMade)
_Must_inspect_result_ __kernel_entry 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)
__kernel_entry 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)
NTSTATUS NTAPI	NtOpenThreadTokenEx (IN HANDLE ThreadHandle, IN ACCESS_MASK DesiredAccess, IN BOOLEAN OpenAsSelf, IN ULONG HandleAttributes, OUT PHANDLE TokenHandle)
NTSTATUS NTAPI	NtOpenThreadToken (IN HANDLE ThreadHandle, IN ACCESS_MASK DesiredAccess, IN BOOLEAN OpenAsSelf, OUT PHANDLE TokenHandle)
NTSTATUS NTAPI	NtCompareTokens (IN HANDLE FirstTokenHandle, IN HANDLE SecondTokenHandle, OUT PBOOLEAN Equal)
NTSTATUS NTAPI	NtFilterToken (IN HANDLE ExistingTokenHandle, IN ULONG Flags, IN PTOKEN_GROUPS SidsToDisable OPTIONAL, IN PTOKEN_PRIVILEGES PrivilegesToDelete OPTIONAL, IN PTOKEN_GROUPS RestrictedSids OPTIONAL, OUT PHANDLE NewTokenHandle)
NTSTATUS NTAPI	NtImpersonateAnonymousToken (IN HANDLE Thread)

Variables
POBJECT_TYPE	SeTokenObjectType = NULL
ERESOURCE	SepTokenLock
TOKEN_SOURCE	SeSystemTokenSource = {"*SYSTEM*", {0}}
LUID	SeSystemAuthenticationId = SYSTEM_LUID
LUID	SeAnonymousAuthenticationId = ANONYMOUS_LOGON_LUID
static GENERIC_MAPPING	SepTokenMapping
static const INFORMATION_CLASS_INFO	SeTokenInformationClass []

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 13 of file token.c.

Typedef Documentation

PTOKEN_AUDIT_POLICY_INFORMATION

typedef struct _TOKEN_AUDIT_POLICY_INFORMATION * PTOKEN_AUDIT_POLICY_INFORMATION

TOKEN_AUDIT_POLICY_INFORMATION

typedef struct _TOKEN_AUDIT_POLICY_INFORMATION TOKEN_AUDIT_POLICY_INFORMATION

Function Documentation

NtAdjustGroupsToken()

NTSTATUS NTAPI NtAdjustGroupsToken	(	IN HANDLE	TokenHandle,
		IN BOOLEAN	ResetToDefault,
		IN PTOKEN_GROUPS	NewState,
		IN ULONG	BufferLength,
		OUT PTOKEN_GROUPS PreviousState	OPTIONAL,
		OUT PULONG	ReturnLength
	)

Definition at line 3083 of file token.c.

{
    UNIMPLEMENTED;
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by AdjustTokenGroups().

NtAdjustPrivilegesToken()

_Must_inspect_result_ __kernel_entry 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
	)

Definition at line 3219 of file token.c.

{
    NTSTATUS Status;
    KPROCESSOR_MODE PreviousMode;
    PTOKEN Token;
    PLUID_AND_ATTRIBUTES CapturedPrivileges = NULL;
    ULONG CapturedCount = 0;
    ULONG CapturedLength = 0;
    ULONG NewStateSize = 0;
    ULONG ChangeCount;
    ULONG RequiredLength;
    BOOLEAN ChangesMade = FALSE;

    PAGED_CODE();

    DPRINT("NtAdjustPrivilegesToken() called\n");

    /* Fail, if we do not disable all privileges but NewState is NULL */
    if (DisableAllPrivileges == FALSE && NewState == NULL)
        return STATUS_INVALID_PARAMETER;

    PreviousMode = KeGetPreviousMode();
    if (PreviousMode != KernelMode)
    {
        _SEH2_TRY
        {
            /* Probe NewState */
            if (DisableAllPrivileges == FALSE)
            {
                /* First probe the header */
                ProbeForRead(NewState, sizeof(TOKEN_PRIVILEGES), sizeof(ULONG));

                CapturedCount = NewState->PrivilegeCount;
                NewStateSize = FIELD_OFFSET(TOKEN_PRIVILEGES, Privileges[CapturedCount]);

                ProbeForRead(NewState, NewStateSize, sizeof(ULONG));
            }

            /* Probe PreviousState and ReturnLength */
            if (PreviousState != NULL)
            {
                ProbeForWrite(PreviousState, BufferLength, sizeof(ULONG));
                ProbeForWrite(ReturnLength, sizeof(ULONG), sizeof(ULONG));
            }
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            /* Return the exception code */
            _SEH2_YIELD(return _SEH2_GetExceptionCode());
        }
        _SEH2_END;
    }
    else
    {
        /* This is kernel mode, we trust the caller */
        if (DisableAllPrivileges == FALSE)
            CapturedCount = NewState->PrivilegeCount;
    }

    /* Do we need to capture the new state? */
    if (DisableAllPrivileges == FALSE)
    {
        _SEH2_TRY
        {
            /* Capture the new state array of privileges */
            Status = SeCaptureLuidAndAttributesArray(NewState->Privileges,
                                                     CapturedCount,
                                                     PreviousMode,
                                                     NULL,
                                                     0,
                                                     PagedPool,
                                                     TRUE,
                                                     &CapturedPrivileges,
                                                     &CapturedLength);
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            /* Return the exception code */
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END;

        if (!NT_SUCCESS(Status))
            return Status;
    }

    /* Reference the token */
    Status = ObReferenceObjectByHandle(TokenHandle,
                                       TOKEN_ADJUST_PRIVILEGES | (PreviousState != NULL ? TOKEN_QUERY : 0),
                                       SeTokenObjectType,
                                       PreviousMode,
                                       (PVOID*)&Token,
                                       NULL);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to reference token (Status 0x%lx)\n", Status);

        /* Release the captured privileges */
        if (CapturedPrivileges != NULL)
        {
            SeReleaseLuidAndAttributesArray(CapturedPrivileges,
                                            PreviousMode,
                                            TRUE);
        }

        return Status;
    }

    /* Lock the token */
    SepAcquireTokenLockExclusive(Token);

    /* Count the privileges that need to be changed, do not apply them yet */
    Status = SepAdjustPrivileges(Token,
                                 DisableAllPrivileges,
                                 CapturedPrivileges,
                                 CapturedCount,
                                 NULL,
                                 FALSE,
                                 &ChangeCount,
                                 &ChangesMade);

    /* Check if the caller asked for the previous state */
    if (PreviousState != NULL)
    {
        /* Calculate the required length */
        RequiredLength = FIELD_OFFSET(TOKEN_PRIVILEGES, Privileges[ChangeCount]);

        /* Try to return the required buffer length */
        _SEH2_TRY
        {
            *ReturnLength = RequiredLength;
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            /* Do cleanup and return the exception code */
            Status = _SEH2_GetExceptionCode();
            _SEH2_YIELD(goto Cleanup);
        }
        _SEH2_END;

        /* Fail, if the buffer length is smaller than the required length */
        if (BufferLength < RequiredLength)
        {
            Status = STATUS_BUFFER_TOO_SMALL;
            goto Cleanup;
        }
    }

    /* Now enter SEH, since we might return the old privileges */
    _SEH2_TRY
    {
        /* This time apply the changes */
        Status = SepAdjustPrivileges(Token,
                                     DisableAllPrivileges,
                                     CapturedPrivileges,
                                     CapturedCount,
                                     PreviousState,
                                     TRUE,
                                     &ChangeCount,
                                     &ChangesMade);
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        /* Do cleanup and return the exception code */
        Status = _SEH2_GetExceptionCode();
        ChangesMade = TRUE; // Force write.
        _SEH2_YIELD(goto Cleanup);
    }
    _SEH2_END;

Cleanup:
    /* Touch the token if we made changes */
    if (ChangesMade)
        ExAllocateLocallyUniqueId(&Token->ModifiedId);

    /* Unlock and dereference the token */
    SepReleaseTokenLock(Token);
    ObDereferenceObject(Token);

    /* Release the captured privileges */
    if (CapturedPrivileges != NULL)
    {
        SeReleaseLuidAndAttributesArray(CapturedPrivileges,
                                        PreviousMode,
                                        TRUE);
    }

    DPRINT ("NtAdjustPrivilegesToken() done\n");
    return Status;
}

Referenced by AdjustTokenPrivileges(), SmpAcquirePrivilege(), and SmpReleasePrivilege().

NtCompareTokens()

NTSTATUS NTAPI NtCompareTokens	(	IN HANDLE	FirstTokenHandle,
		IN HANDLE	SecondTokenHandle,
		OUT PBOOLEAN	Equal
	)

Definition at line 3872 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))
        return Status;

    Status = ObReferenceObjectByHandle(SecondTokenHandle,
                                       TOKEN_QUERY,
                                       SeTokenObjectType,
                                       PreviousMode,
                                       (PVOID*)&SecondToken,
                                       NULL);
    if (!NT_SUCCESS(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;
}

NtCreateToken()

__kernel_entry 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
	)

Definition at line 3420 of file token.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,
                            0, // FIXME: Should capture
                            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 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
	)

Definition at line 2941 of file token.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;
}

Referenced by CreateProcessAsUserCommon(), DuplicateTokenEx(), and ImpersonateLoggedOnUser().

NtFilterToken()

NTSTATUS NTAPI NtFilterToken	(	IN HANDLE	ExistingTokenHandle,
		IN ULONG	Flags,
		IN PTOKEN_GROUPS SidsToDisable	OPTIONAL,
		IN PTOKEN_PRIVILEGES PrivilegesToDelete	OPTIONAL,
		IN PTOKEN_GROUPS RestrictedSids	OPTIONAL,
		OUT PHANDLE	NewTokenHandle
	)

Definition at line 3952 of file token.c.

{
    UNIMPLEMENTED;
    return STATUS_NOT_IMPLEMENTED;
}

NtImpersonateAnonymousToken()

NTSTATUS NTAPI NtImpersonateAnonymousToken

(

IN HANDLE

Thread

)

Definition at line 3968 of file token.c.

{
    UNIMPLEMENTED;
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by ImpersonateAnonymousToken().

NtOpenThreadToken()

NTSTATUS NTAPI NtOpenThreadToken	(	IN HANDLE	ThreadHandle,
		IN ACCESS_MASK	DesiredAccess,
		IN BOOLEAN	OpenAsSelf,
		OUT PHANDLE	TokenHandle
	)

Definition at line 3858 of file token.c.

{
    return NtOpenThreadTokenEx(ThreadHandle, DesiredAccess, OpenAsSelf, 0,
                               TokenHandle);
}

Referenced by BaseGetNamedObjectDirectory(), CheckTokenMembership(), CsrGetProcessLuid(), GetCallerLuid(), LsarSetSecurityObject(), NpGetUserNamep(), OpenThreadToken(), RSetServiceObjectSecurity(), RtlDefaultNpAcl(), RtlNewSecurityGrantedAccess(), RtlpGetImpersonationToken(), and START_TEST().

NtOpenThreadTokenEx()

NTSTATUS NTAPI NtOpenThreadTokenEx	(	IN HANDLE	ThreadHandle,
		IN ACCESS_MASK	DesiredAccess,
		IN BOOLEAN	OpenAsSelf,
		IN ULONG	HandleAttributes,
		OUT PHANDLE	TokenHandle
	)

Definition at line 3695 of file token.c.

{
    PETHREAD Thread, NewThread;
    HANDLE hToken;
    PTOKEN Token, NewToken = NULL, PrimaryToken;
    BOOLEAN CopyOnOpen, EffectiveOnly;
    SECURITY_IMPERSONATION_LEVEL ImpersonationLevel;
    SE_IMPERSONATION_STATE ImpersonationState;
    OBJECT_ATTRIBUTES ObjectAttributes;
    SECURITY_DESCRIPTOR SecurityDescriptor;
    PACL Dacl = NULL;
    KPROCESSOR_MODE PreviousMode;
    NTSTATUS Status;
    BOOLEAN RestoreImpersonation = FALSE;

    PAGED_CODE();

    PreviousMode = ExGetPreviousMode();

    if (PreviousMode != KernelMode)
    {
        _SEH2_TRY
        {
            ProbeForWriteHandle(TokenHandle);
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            /* Return the exception code */
            _SEH2_YIELD(return _SEH2_GetExceptionCode());
        }
        _SEH2_END;
    }

    /* Validate object attributes */
    HandleAttributes = ObpValidateAttributes(HandleAttributes, PreviousMode);

    /*
     * At first open the thread token for information access and verify
     * that the token associated with thread is valid.
     */

    Status = ObReferenceObjectByHandle(ThreadHandle, THREAD_QUERY_INFORMATION,
                                       PsThreadType, PreviousMode, (PVOID*)&Thread,
                                       NULL);
    if (!NT_SUCCESS(Status))
    {
        return Status;
    }

    Token = PsReferenceImpersonationToken(Thread, &CopyOnOpen, &EffectiveOnly,
                                          &ImpersonationLevel);
    if (Token == NULL)
    {
        ObDereferenceObject(Thread);
        return STATUS_NO_TOKEN;
    }

    if (ImpersonationLevel == SecurityAnonymous)
    {
        PsDereferenceImpersonationToken(Token);
        ObDereferenceObject(Thread);
        return STATUS_CANT_OPEN_ANONYMOUS;
    }

    /*
     * Revert to self if OpenAsSelf is specified.
     */

    if (OpenAsSelf)
    {
        RestoreImpersonation = PsDisableImpersonation(PsGetCurrentThread(),
                                                      &ImpersonationState);
    }

    if (CopyOnOpen)
    {
        Status = ObReferenceObjectByHandle(ThreadHandle, THREAD_ALL_ACCESS,
                                           PsThreadType, KernelMode,
                                           (PVOID*)&NewThread, NULL);
        if (NT_SUCCESS(Status))
        {
            PrimaryToken = PsReferencePrimaryToken(NewThread->ThreadsProcess);

            Status = SepCreateImpersonationTokenDacl(Token, PrimaryToken, &Dacl);

            ObFastDereferenceObject(&NewThread->ThreadsProcess->Token, PrimaryToken);

            if (NT_SUCCESS(Status))
            {
                if (Dacl)
                {
                    RtlCreateSecurityDescriptor(&SecurityDescriptor,
                                                SECURITY_DESCRIPTOR_REVISION);
                    RtlSetDaclSecurityDescriptor(&SecurityDescriptor, TRUE, Dacl,
                                                 FALSE);
                }

                InitializeObjectAttributes(&ObjectAttributes, NULL, HandleAttributes,
                                           NULL, Dacl ? &SecurityDescriptor : NULL);

                Status = SepDuplicateToken(Token, &ObjectAttributes, EffectiveOnly,
                                           TokenImpersonation, ImpersonationLevel,
                                           KernelMode, &NewToken);
                if (NT_SUCCESS(Status))
                {
                    ObReferenceObject(NewToken);
                    Status = ObInsertObject(NewToken, NULL, DesiredAccess, 0, NULL,
                                            &hToken);
                }
            }
        }
    }
    else
    {
        Status = ObOpenObjectByPointer(Token, HandleAttributes,
                                       NULL, DesiredAccess, SeTokenObjectType,
                                       PreviousMode, &hToken);
    }

    if (Dacl) ExFreePoolWithTag(Dacl, TAG_ACL);

    if (RestoreImpersonation)
    {
        PsRestoreImpersonation(PsGetCurrentThread(), &ImpersonationState);
    }

    ObDereferenceObject(Token);

    if (NT_SUCCESS(Status) && CopyOnOpen)
    {
        PsImpersonateClient(Thread, NewToken, FALSE, EffectiveOnly, ImpersonationLevel);
    }

    if (NewToken) ObDereferenceObject(NewToken);

    if (CopyOnOpen && NewThread) ObDereferenceObject(NewThread);

    ObDereferenceObject(Thread);

    if (NT_SUCCESS(Status))
    {
        _SEH2_TRY
        {
            *TokenHandle = hToken;
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END;
    }

    return Status;
}

Referenced by NtOpenThreadToken(), and START_TEST().

NtQueryInformationToken()

_Must_inspect_result_ __kernel_entry NTSTATUS NTAPI NtQueryInformationToken	(	_In_ HANDLE	TokenHandle,
		_In_ TOKEN_INFORMATION_CLASS	TokenInformationClass,
		_Out_writes_bytes_to_opt_(TokenInformationLength, *ReturnLength) PVOID	TokenInformation,
		_In_ ULONG	TokenInformationLength,
		_Out_ PULONG	ReturnLength
	)

Definition at line 1839 of file token.c.

{
    NTSTATUS Status;
    KPROCESSOR_MODE PreviousMode;
    PTOKEN Token;
    ULONG RequiredLength;
    union
    {
        PSID PSid;
        ULONG Ulong;
    } Unused;

    PAGED_CODE();

    PreviousMode = ExGetPreviousMode();

    /* Check buffers and class validity */
    Status = DefaultQueryInfoBufferCheck(TokenInformationClass,
                                         SeTokenInformationClass,
                                         RTL_NUMBER_OF(SeTokenInformationClass),
                                         TokenInformation,
                                         TokenInformationLength,
                                         ReturnLength,
                                         NULL,
                                         PreviousMode);
    if (!NT_SUCCESS(Status))
    {
        DPRINT("NtQueryInformationToken() failed, Status: 0x%x\n", Status);
        return Status;
    }

    Status = ObReferenceObjectByHandle(TokenHandle,
                                       (TokenInformationClass == TokenSource) ? TOKEN_QUERY_SOURCE : TOKEN_QUERY,
                                       SeTokenObjectType,
                                       PreviousMode,
                                       (PVOID*)&Token,
                                       NULL);
    if (NT_SUCCESS(Status))
    {
        /* Lock the token */
        SepAcquireTokenLockShared(Token);

        switch (TokenInformationClass)
        {
            case TokenUser:
            {
                PTOKEN_USER tu = (PTOKEN_USER)TokenInformation;

                DPRINT("NtQueryInformationToken(TokenUser)\n");
                RequiredLength = sizeof(TOKEN_USER) +
                    RtlLengthSid(Token->UserAndGroups[0].Sid);

                _SEH2_TRY
                {
                    if (TokenInformationLength >= RequiredLength)
                    {
                        Status = RtlCopySidAndAttributesArray(1,
                                                              &Token->UserAndGroups[0],
                                                              RequiredLength - sizeof(TOKEN_USER),
                                                              &tu->User,
                                                              (PSID)(tu + 1),
                                                              &Unused.PSid,
                                                              &Unused.Ulong);
                    }
                    else
                    {
                        Status = STATUS_BUFFER_TOO_SMALL;
                    }

                    if (ReturnLength != NULL)
                    {
                        *ReturnLength = RequiredLength;
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                }
                _SEH2_END;

                break;
            }

            case TokenGroups:
            {
                PTOKEN_GROUPS tg = (PTOKEN_GROUPS)TokenInformation;

                DPRINT("NtQueryInformationToken(TokenGroups)\n");
                RequiredLength = sizeof(tg->GroupCount) +
                    RtlLengthSidAndAttributes(Token->UserAndGroupCount - 1, &Token->UserAndGroups[1]);

                _SEH2_TRY
                {
                    if (TokenInformationLength >= RequiredLength)
                    {
                        ULONG SidLen = RequiredLength - sizeof(tg->GroupCount) -
                            ((Token->UserAndGroupCount - 1) * sizeof(SID_AND_ATTRIBUTES));
                        PSID Sid = (PSID_AND_ATTRIBUTES)((ULONG_PTR)tg + sizeof(tg->GroupCount) +
                                                         ((Token->UserAndGroupCount - 1) * sizeof(SID_AND_ATTRIBUTES)));

                        tg->GroupCount = Token->UserAndGroupCount - 1;
                        Status = RtlCopySidAndAttributesArray(Token->UserAndGroupCount - 1,
                                                              &Token->UserAndGroups[1],
                                                              SidLen,
                                                              &tg->Groups[0],
                                                              Sid,
                                                              &Unused.PSid,
                                                              &Unused.Ulong);
                    }
                    else
                    {
                        Status = STATUS_BUFFER_TOO_SMALL;
                    }

                    if (ReturnLength != NULL)
                    {
                        *ReturnLength = RequiredLength;
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                }
                _SEH2_END;

                break;
            }

            case TokenPrivileges:
            {
                PTOKEN_PRIVILEGES tp = (PTOKEN_PRIVILEGES)TokenInformation;

                DPRINT("NtQueryInformationToken(TokenPrivileges)\n");
                RequiredLength = sizeof(tp->PrivilegeCount) +
                    (Token->PrivilegeCount * sizeof(LUID_AND_ATTRIBUTES));

                _SEH2_TRY
                {
                    if (TokenInformationLength >= RequiredLength)
                    {
                        tp->PrivilegeCount = Token->PrivilegeCount;
                        RtlCopyLuidAndAttributesArray(Token->PrivilegeCount,
                                                      Token->Privileges,
                                                      &tp->Privileges[0]);
                    }
                    else
                    {
                        Status = STATUS_BUFFER_TOO_SMALL;
                    }

                    if (ReturnLength != NULL)
                    {
                        *ReturnLength = RequiredLength;
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                }
                _SEH2_END;

                break;
            }

            case TokenOwner:
            {
                PTOKEN_OWNER to = (PTOKEN_OWNER)TokenInformation;
                ULONG SidLen;

                DPRINT("NtQueryInformationToken(TokenOwner)\n");
                SidLen = RtlLengthSid(Token->UserAndGroups[Token->DefaultOwnerIndex].Sid);
                RequiredLength = sizeof(TOKEN_OWNER) + SidLen;

                _SEH2_TRY
                {
                    if (TokenInformationLength >= RequiredLength)
                    {
                        to->Owner = (PSID)(to + 1);
                        Status = RtlCopySid(SidLen,
                                            to->Owner,
                                            Token->UserAndGroups[Token->DefaultOwnerIndex].Sid);
                    }
                    else
                    {
                        Status = STATUS_BUFFER_TOO_SMALL;
                    }

                    if (ReturnLength != NULL)
                    {
                        *ReturnLength = RequiredLength;
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                }
                _SEH2_END;

                break;
            }

            case TokenPrimaryGroup:
            {
                PTOKEN_PRIMARY_GROUP tpg = (PTOKEN_PRIMARY_GROUP)TokenInformation;
                ULONG SidLen;

                DPRINT("NtQueryInformationToken(TokenPrimaryGroup)\n");
                SidLen = RtlLengthSid(Token->PrimaryGroup);
                RequiredLength = sizeof(TOKEN_PRIMARY_GROUP) + SidLen;

                _SEH2_TRY
                {
                    if (TokenInformationLength >= RequiredLength)
                    {
                        tpg->PrimaryGroup = (PSID)(tpg + 1);
                        Status = RtlCopySid(SidLen,
                                            tpg->PrimaryGroup,
                                            Token->PrimaryGroup);
                    }
                    else
                    {
                        Status = STATUS_BUFFER_TOO_SMALL;
                    }

                    if (ReturnLength != NULL)
                    {
                        *ReturnLength = RequiredLength;
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                }
                _SEH2_END;

                break;
            }

            case TokenDefaultDacl:
            {
                PTOKEN_DEFAULT_DACL tdd = (PTOKEN_DEFAULT_DACL)TokenInformation;

                DPRINT("NtQueryInformationToken(TokenDefaultDacl)\n");
                RequiredLength = sizeof(TOKEN_DEFAULT_DACL);

                if (Token->DefaultDacl != NULL)
                    RequiredLength += Token->DefaultDacl->AclSize;

                _SEH2_TRY
                {
                    if (TokenInformationLength >= RequiredLength)
                    {
                        if (Token->DefaultDacl != NULL)
                        {
                            tdd->DefaultDacl = (PACL)(tdd + 1);
                            RtlCopyMemory(tdd->DefaultDacl,
                                          Token->DefaultDacl,
                                          Token->DefaultDacl->AclSize);
                        }
                        else
                        {
                            tdd->DefaultDacl = NULL;
                        }
                    }
                    else
                    {
                        Status = STATUS_BUFFER_TOO_SMALL;
                    }

                    if (ReturnLength != NULL)
                    {
                        *ReturnLength = RequiredLength;
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                }
                _SEH2_END;

                break;
            }

            case TokenSource:
            {
                PTOKEN_SOURCE ts = (PTOKEN_SOURCE)TokenInformation;

                DPRINT("NtQueryInformationToken(TokenSource)\n");
                RequiredLength = sizeof(TOKEN_SOURCE);

                _SEH2_TRY
                {
                    if (TokenInformationLength >= RequiredLength)
                    {
                        *ts = Token->TokenSource;
                    }
                    else
                    {
                        Status = STATUS_BUFFER_TOO_SMALL;
                    }

                    if (ReturnLength != NULL)
                    {
                        *ReturnLength = RequiredLength;
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                }
                _SEH2_END;

                break;
            }

            case TokenType:
            {
                PTOKEN_TYPE tt = (PTOKEN_TYPE)TokenInformation;

                DPRINT("NtQueryInformationToken(TokenType)\n");
                RequiredLength = sizeof(TOKEN_TYPE);

                _SEH2_TRY
                {
                    if (TokenInformationLength >= RequiredLength)
                    {
                        *tt = Token->TokenType;
                    }
                    else
                    {
                        Status = STATUS_BUFFER_TOO_SMALL;
                    }

                    if (ReturnLength != NULL)
                    {
                        *ReturnLength = RequiredLength;
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                }
                _SEH2_END;

                break;
            }

            case TokenImpersonationLevel:
            {
                PSECURITY_IMPERSONATION_LEVEL sil = (PSECURITY_IMPERSONATION_LEVEL)TokenInformation;

                DPRINT("NtQueryInformationToken(TokenImpersonationLevel)\n");

                /* Fail if the token is not an impersonation token */
                if (Token->TokenType != TokenImpersonation)
                {
                    Status = STATUS_INVALID_INFO_CLASS;
                    break;
                }

                RequiredLength = sizeof(SECURITY_IMPERSONATION_LEVEL);

                _SEH2_TRY
                {
                    if (TokenInformationLength >= RequiredLength)
                    {
                        *sil = Token->ImpersonationLevel;
                    }
                    else
                    {
                        Status = STATUS_BUFFER_TOO_SMALL;
                    }

                    if (ReturnLength != NULL)
                    {
                        *ReturnLength = RequiredLength;
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                }
                _SEH2_END;

                break;
            }

            case TokenStatistics:
            {
                PTOKEN_STATISTICS ts = (PTOKEN_STATISTICS)TokenInformation;

                DPRINT("NtQueryInformationToken(TokenStatistics)\n");
                RequiredLength = sizeof(TOKEN_STATISTICS);

                _SEH2_TRY
                {
                    if (TokenInformationLength >= RequiredLength)
                    {
                        ts->TokenId = Token->TokenId;
                        ts->AuthenticationId = Token->AuthenticationId;
                        ts->ExpirationTime = Token->ExpirationTime;
                        ts->TokenType = Token->TokenType;
                        ts->ImpersonationLevel = Token->ImpersonationLevel;
                        ts->DynamicCharged = Token->DynamicCharged;
                        ts->DynamicAvailable = Token->DynamicAvailable;
                        ts->GroupCount = Token->UserAndGroupCount - 1;
                        ts->PrivilegeCount = Token->PrivilegeCount;
                        ts->ModifiedId = Token->ModifiedId;
                    }
                    else
                    {
                        Status = STATUS_BUFFER_TOO_SMALL;
                    }

                    if (ReturnLength != NULL)
                    {
                        *ReturnLength = RequiredLength;
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                }
                _SEH2_END;

                break;
            }

            case TokenOrigin:
            {
                PTOKEN_ORIGIN to = (PTOKEN_ORIGIN)TokenInformation;

                DPRINT("NtQueryInformationToken(TokenOrigin)\n");
                RequiredLength = sizeof(TOKEN_ORIGIN);

                _SEH2_TRY
                {
                    if (TokenInformationLength >= RequiredLength)
                    {
                        RtlCopyLuid(&to->OriginatingLogonSession,
                                    &Token->AuthenticationId);
                    }
                    else
                    {
                        Status = STATUS_BUFFER_TOO_SMALL;
                    }

                    if (ReturnLength != NULL)
                    {
                        *ReturnLength = RequiredLength;
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                }
                _SEH2_END;

                break;
            }

            case TokenGroupsAndPrivileges:
                DPRINT1("NtQueryInformationToken(TokenGroupsAndPrivileges) not implemented\n");
                Status = STATUS_NOT_IMPLEMENTED;
                break;

            case TokenRestrictedSids:
            {
                PTOKEN_GROUPS tg = (PTOKEN_GROUPS)TokenInformation;

                DPRINT("NtQueryInformationToken(TokenRestrictedSids)\n");
                RequiredLength = sizeof(tg->GroupCount) +
                RtlLengthSidAndAttributes(Token->RestrictedSidCount, Token->RestrictedSids);

                _SEH2_TRY
                {
                    if (TokenInformationLength >= RequiredLength)
                    {
                        ULONG SidLen = RequiredLength - sizeof(tg->GroupCount) -
                            (Token->RestrictedSidCount * sizeof(SID_AND_ATTRIBUTES));
                        PSID Sid = (PSID)((ULONG_PTR)tg + sizeof(tg->GroupCount) +
                                          (Token->RestrictedSidCount * sizeof(SID_AND_ATTRIBUTES)));

                        tg->GroupCount = Token->RestrictedSidCount;
                        Status = RtlCopySidAndAttributesArray(Token->RestrictedSidCount,
                                                              Token->RestrictedSids,
                                                              SidLen,
                                                              &tg->Groups[0],
                                                              Sid,
                                                              &Unused.PSid,
                                                              &Unused.Ulong);
                    }
                    else
                    {
                        Status = STATUS_BUFFER_TOO_SMALL;
                    }

                    if (ReturnLength != NULL)
                    {
                        *ReturnLength = RequiredLength;
                    }
                }
                _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                {
                    Status = _SEH2_GetExceptionCode();
                }
                _SEH2_END;

                break;
            }

            case TokenSandBoxInert:
                DPRINT1("NtQueryInformationToken(TokenSandboxInert) not implemented\n");
                Status = STATUS_NOT_IMPLEMENTED;
                break;

            case TokenSessionId:
            {
                ULONG SessionId = 0;

                DPRINT("NtQueryInformationToken(TokenSessionId)\n");

                Status = SeQuerySessionIdToken(Token, &SessionId);
                if (NT_SUCCESS(Status))
                {
                    _SEH2_TRY
                    {
                        /* Buffer size was already verified, no need to check here again */
                        *(PULONG)TokenInformation = SessionId;

                        if (ReturnLength != NULL)
                        {
                            *ReturnLength = sizeof(ULONG);
                        }
                    }
                    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
                    {
                        Status = _SEH2_GetExceptionCode();
                    }
                    _SEH2_END;
                }

                break;
            }

            default:
                DPRINT1("NtQueryInformationToken(%d) invalid information class\n", TokenInformationClass);
                Status = STATUS_INVALID_INFO_CLASS;
                break;
        }

        /* Unlock and dereference the token */
        SepReleaseTokenLock(Token);
        ObDereferenceObject(Token);
    }

    return Status;
}

Referenced by CreateProcessAsUserCommon(), CsrGetProcessLuid(), CsrSetProcessSecurity(), DoAdminUnlock(), GetCallerLuid(), GetSiteSidFromToken(), GetTokenInformation(), GetUserSid(), GetUserSidStringFromToken(), ImpersonateLoggedOnUser(), IsTokenRestricted(), LsapIsTrustedClient(), PlayLogonSoundThread(), RegOpenUserClassesRoot(), RtlDefaultNpAcl(), RtlNewInstanceSecurityObject(), and RtlNewSecurityGrantedAccess().

NtSetInformationToken()

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

Definition at line 2414 of file token.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;
                    PSID InputSid = NULL, CapturedSid;
                    ULONG PrimaryGroupIndex;

                    _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);

                        /* Find the primary group amongst the existing token user and groups */
                        Status = SepFindPrimaryGroupAndDefaultOwner(Token,
                                                                    CapturedSid,
                                                                    NULL,
                                                                    &PrimaryGroupIndex,
                                                                    NULL);
                        if (NT_SUCCESS(Status))
                        {
                            /* Found it */
                            Token->PrimaryGroup = Token->UserAndGroups[PrimaryGroupIndex].Sid;
                            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 and copy the dacl */
                        Status = SepCaptureAcl(InputAcl,
                                               PreviousMode,
                                               PagedPool,
                                               TRUE,
                                               &CapturedAcl);
                        if (NT_SUCCESS(Status))
                        {
                            ULONG DynamicLength;

                            /* Lock the token */
                            SepAcquireTokenLockExclusive(Token);

                            //
                            // NOTE: So far our dynamic area only contains
                            // the default dacl, so this makes the following
                            // code pretty simple. The day where it stores
                            // other data, the code will require adaptations.
                            //

                            DynamicLength = Token->DynamicAvailable;
                            // Add here any other data length present in the dynamic area...
                            if (Token->DefaultDacl)
                                DynamicLength += Token->DefaultDacl->AclSize;

                            /* Reallocate the dynamic area if it is too small */
                            Status = STATUS_SUCCESS;
                            if ((DynamicLength < CapturedAcl->AclSize) ||
                                (Token->DynamicPart == NULL))
                            {
                                PVOID NewDynamicPart;

                                NewDynamicPart = ExAllocatePoolWithTag(PagedPool,
                                                                       CapturedAcl->AclSize,
                                                                       TAG_TOKEN_DYNAMIC);
                                if (NewDynamicPart == NULL)
                                {
                                    Status = STATUS_INSUFFICIENT_RESOURCES;
                                }
                                else
                                {
                                    if (Token->DynamicPart != NULL)
                                    {
                                        // RtlCopyMemory(NewDynamicPart, Token->DynamicPart, DynamicLength);
                                        ExFreePoolWithTag(Token->DynamicPart, TAG_TOKEN_DYNAMIC);
                                    }
                                    Token->DynamicPart = NewDynamicPart;
                                    Token->DynamicAvailable = 0;
                                }
                            }
                            else
                            {
                                Token->DynamicAvailable = DynamicLength - CapturedAcl->AclSize;
                            }

                            if (NT_SUCCESS(Status))
                            {
                                /* Set the new dacl */
                                Token->DefaultDacl = (PVOID)Token->DynamicPart;
                                RtlCopyMemory(Token->DefaultDacl,
                                              CapturedAcl,
                                              CapturedAcl->AclSize);

                                ExAllocateLocallyUniqueId(&Token->ModifiedId);
                            }

                            /* Unlock the token */
                            SepReleaseTokenLock(Token);

                            ExFreePoolWithTag(CapturedAcl, TAG_ACL);
                        }
                    }
                    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;

                    /* Unlock the token */
                    SepReleaseTokenLock(Token);
                }

                /* Dereference the logon session if needed */
                if (SessionReference == 0)
                    SepRmDereferenceLogonSession(&Token->AuthenticationId);

                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;
}

Referenced by SetTokenInformation().

RtlLengthSidAndAttributes()

static ULONG RtlLengthSidAndAttributes ( ULONG  Count, PSID_AND_ATTRIBUTES  Src  )

static

Definition at line 328 of file token.c.

{
    ULONG i;
    ULONG uLength;

    PAGED_CODE();

    uLength = Count * sizeof(SID_AND_ATTRIBUTES);
    for (i = 0; i < Count; i++)
        uLength += RtlLengthSid(Src[i].Sid);

    return uLength;
}

Referenced by NtQueryInformationToken(), and SeQueryInformationToken().

SeAssignPrimaryToken()

VOID NTAPI SeAssignPrimaryToken	(	IN PEPROCESS	Process,
		IN PTOKEN	Token
	)

Definition at line 862 of file token.c.

{
    PAGED_CODE();

    /* Sanity checks */
    ASSERT(Token->TokenType == TokenPrimary);
    ASSERT(!Token->TokenInUse);

    /* Clean any previous token */
    if (Process->Token.Object) SeDeassignPrimaryToken(Process);

    /* Set the new token */
    ObReferenceObject(Token);
    Token->TokenInUse = TRUE;
    ObInitializeFastReference(&Process->Token, Token);
}

Referenced by PspInitializeProcessSecurity().

SeCopyClientToken()

NTSTATUS NTAPI SeCopyClientToken	(	IN PACCESS_TOKEN	Token,
		IN SECURITY_IMPERSONATION_LEVEL	Level,
		IN KPROCESSOR_MODE	PreviousMode,
		OUT PACCESS_TOKEN *	NewToken
	)

Definition at line 788 of file token.c.

{
    NTSTATUS Status;
    OBJECT_ATTRIBUTES ObjectAttributes;

    PAGED_CODE();

    InitializeObjectAttributes(&ObjectAttributes,
                               NULL,
                               0,
                               NULL,
                               NULL);

    Status = SepDuplicateToken(Token,
                               &ObjectAttributes,
                               FALSE,
                               TokenImpersonation,
                               Level,
                               PreviousMode,
                               (PTOKEN*)NewToken);

    return Status;
}

Referenced by SepCreateClientSecurity().

SeDeassignPrimaryToken()

VOID NTAPI SeDeassignPrimaryToken

(

PEPROCESS

Process

)

Definition at line 313 of file token.c.

{
    PTOKEN OldToken;

    /* Remove the Token */
    OldToken = ObFastReplaceObject(&Process->Token, NULL);

    /* Mark the Old Token as free */
    OldToken->TokenInUse = FALSE;

    /* Dereference the Token */
    ObDereferenceObject(OldToken);
}

Referenced by SeAssignPrimaryToken().

SeExchangePrimaryToken()

NTSTATUS NTAPI SeExchangePrimaryToken	(	_In_ PEPROCESS	Process,
		_In_ PACCESS_TOKEN	NewAccessToken,
		_Out_ PACCESS_TOKEN *	OldAccessToken
	)

Definition at line 234 of file token.c.

{
    PTOKEN OldToken;
    PTOKEN NewToken = (PTOKEN)NewAccessToken;

    PAGED_CODE();

    if (NewToken->TokenType != TokenPrimary)
        return STATUS_BAD_TOKEN_TYPE;

    if (NewToken->TokenInUse)
    {
        BOOLEAN IsEqual;
        NTSTATUS Status;

        /* Maybe we're trying to set the same token */
        OldToken = PsReferencePrimaryToken(Process);
        if (OldToken == NewToken)
        {
            /* So it's a nop. */
            *OldAccessToken = OldToken;
            return STATUS_SUCCESS;
        }

        Status = SepCompareTokens(OldToken, NewToken, &IsEqual);
        if (!NT_SUCCESS(Status))
        {
            PsDereferencePrimaryToken(OldToken);
            *OldAccessToken = NULL;
            return Status;
        }

        if (!IsEqual)
        {
            PsDereferencePrimaryToken(OldToken);
            *OldAccessToken = NULL;
            return STATUS_TOKEN_ALREADY_IN_USE;
        }
        /* Silently return STATUS_SUCCESS but do not set the new token,
         * as it's already in use elsewhere. */
        *OldAccessToken = OldToken;
        return STATUS_SUCCESS;
    }

    /* Lock the new token */
    SepAcquireTokenLockExclusive(NewToken);

    /* Mark new token in use */
    NewToken->TokenInUse = TRUE;

    // TODO: Set a correct SessionId for NewToken

    /* Unlock the new token */
    SepReleaseTokenLock(NewToken);

    /* Reference the new token */
    ObReferenceObject(NewToken);

    /* Replace the old with the new */
    OldToken = ObFastReplaceObject(&Process->Token, NewToken);

    /* Lock the old token */
    SepAcquireTokenLockExclusive(OldToken);

    /* Mark the old token as free */
    OldToken->TokenInUse = FALSE;

    /* Unlock the old token */
    SepReleaseTokenLock(OldToken);

    *OldAccessToken = (PACCESS_TOKEN)OldToken;
    return STATUS_SUCCESS;
}

Referenced by PspAssignPrimaryToken().

SeFilterToken()

NTSTATUS NTAPI SeFilterToken	(	IN PACCESS_TOKEN	ExistingToken,
		IN ULONG	Flags,
		IN PTOKEN_GROUPS SidsToDisable	OPTIONAL,
		IN PTOKEN_PRIVILEGES PrivilegesToDelete	OPTIONAL,
		IN PTOKEN_GROUPS RestrictedSids	OPTIONAL,
		OUT PACCESS_TOKEN *	FilteredToken
	)

Definition at line 1290 of file token.c.

{
    UNIMPLEMENTED;
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by FatCreateRestrictEveryoneToken().

SeIsTokenChild()

NTSTATUS NTAPI SeIsTokenChild	(	IN PTOKEN	Token,
		OUT PBOOLEAN	IsChild
	)

Definition at line 716 of file token.c.

{
    PTOKEN ProcessToken;
    LUID ProcessTokenId, CallerParentId;

    /* Assume failure */
    *IsChild = FALSE;

    /* Reference the process token */
    ProcessToken = PsReferencePrimaryToken(PsGetCurrentProcess());
    if (!ProcessToken)
        return STATUS_UNSUCCESSFUL;

    /* Get its token ID */
    ProcessTokenId = ProcessToken->TokenId;

    /* Dereference the token */
    ObFastDereferenceObject(&PsGetCurrentProcess()->Token, ProcessToken);

    /* Get our parent token ID */
    CallerParentId = Token->ParentTokenId;

    /* Compare the token IDs */
    if (RtlEqualLuid(&CallerParentId, &ProcessTokenId))
        *IsChild = TRUE;

    /* Return success */
    return STATUS_SUCCESS;
}

Referenced by PspSetPrimaryToken().

SeIsTokenSibling()

NTSTATUS NTAPI SeIsTokenSibling	(	IN PTOKEN	Token,
		OUT PBOOLEAN	IsSibling
	)

Definition at line 749 of file token.c.

{
    PTOKEN ProcessToken;
    LUID ProcessParentId, ProcessAuthId;
    LUID CallerParentId, CallerAuthId;

    /* Assume failure */
    *IsSibling = FALSE;

    /* Reference the process token */
    ProcessToken = PsReferencePrimaryToken(PsGetCurrentProcess());
    if (!ProcessToken)
        return STATUS_UNSUCCESSFUL;

    /* Get its parent and authentication IDs */
    ProcessParentId = ProcessToken->ParentTokenId;
    ProcessAuthId = ProcessToken->AuthenticationId;

    /* Dereference the token */
    ObFastDereferenceObject(&PsGetCurrentProcess()->Token, ProcessToken);

    /* Get our parent and authentication IDs */
    CallerParentId = Token->ParentTokenId;
    CallerAuthId = Token->AuthenticationId;

    /* Compare the token IDs */
    if (RtlEqualLuid(&CallerParentId, &ProcessParentId) &&
        RtlEqualLuid(&CallerAuthId, &ProcessAuthId))
    {
        *IsSibling = TRUE;
    }

    /* Return success */
    return STATUS_SUCCESS;
}

Referenced by PspSetPrimaryToken().

SepAdjustPrivileges()

static NTSTATUS SepAdjustPrivileges ( _Inout_ PTOKEN  Token, _In_ BOOLEAN  DisableAllPrivileges, _In_opt_ PLUID_AND_ATTRIBUTES  NewState, _In_ ULONG  NewStateCount, _Out_opt_ PTOKEN_PRIVILEGES  PreviousState, _In_ BOOLEAN  ApplyChanges, _Out_ PULONG  ChangedPrivileges, _Out_ PBOOLEAN  ChangesMade  )

static

Definition at line 3097 of file token.c.

{
    ULONG i, j, PrivilegeCount, ChangeCount, NewAttributes;

    /* Count the found privileges and those that need to be changed */
    PrivilegeCount = 0;
    ChangeCount = 0;
    *ChangesMade = FALSE;

    /* Loop all privileges in the token */
    for (i = 0; i < Token->PrivilegeCount; i++)
    {
        /* Shall all of them be disabled? */
        if (DisableAllPrivileges)
        {
            /* The new attributes are the old ones, but disabled */
            NewAttributes = Token->Privileges[i].Attributes & ~SE_PRIVILEGE_ENABLED;
        }
        else
        {
            /* Otherwise loop all provided privileges */
            for (j = 0; j < NewStateCount; j++)
            {
                /* Check if this is the LUID we are looking for */
                if (RtlEqualLuid(&Token->Privileges[i].Luid, &NewState[j].Luid))
                {
                    DPRINT("Found privilege\n");

                    /* Copy SE_PRIVILEGE_ENABLED | SE_PRIVILEGE_REMOVED */
                    NewAttributes = NewState[j].Attributes;
                    NewAttributes &= (SE_PRIVILEGE_ENABLED | SE_PRIVILEGE_REMOVED);
                    NewAttributes |= Token->Privileges[i].Attributes & ~SE_PRIVILEGE_ENABLED;

                    /* Stop looking */
                    break;
                }
            }

            /* Check if we didn't find the privilege */
            if (j == NewStateCount)
            {
                /* Continue with the token's next privilege */
                continue;
            }
        }

        /* We found a privilege, count it */
        PrivilegeCount++;

        /* Does the privilege need to be changed? */
        if (Token->Privileges[i].Attributes != NewAttributes)
        {
            /* Does the caller want the old privileges? */
            if (PreviousState != NULL)
            {
                /* Copy the old privilege */
                PreviousState->Privileges[ChangeCount] = Token->Privileges[i];
            }

            /* Does the caller want to apply the changes? */
            if (ApplyChanges)
            {
                /* Shall we remove the privilege? */
                if (NewAttributes & SE_PRIVILEGE_REMOVED)
                {
                    /* Set the token as disabled and update flags for it */
                    Token->Privileges[i].Attributes &= ~SE_PRIVILEGE_ENABLED;
                    SepUpdateSinglePrivilegeFlagToken(Token, i);

                    /* Remove the privilege */
                    SepRemovePrivilegeToken(Token, i);

                    *ChangesMade = TRUE;

                    /* Fix the running index and continue with next one */
                    i--;
                    continue;
                }

                /* Set the new attributes and update flags */
                Token->Privileges[i].Attributes = NewAttributes;
                SepUpdateSinglePrivilegeFlagToken(Token, i);
                *ChangesMade = TRUE;
            }

            /* Increment the change count */
            ChangeCount++;
        }
    }

    /* Set the number of saved privileges */
    if (PreviousState != NULL)
        PreviousState->PrivilegeCount = ChangeCount;

    /* Return the number of changed privileges */
    *ChangedPrivileges = ChangeCount;

    /* Check if we missed some */
    if (!DisableAllPrivileges && (PrivilegeCount < NewStateCount))
    {
        return STATUS_NOT_ALL_ASSIGNED;
    }

    return STATUS_SUCCESS;
}

Referenced by NtAdjustPrivilegesToken().

SepCompareTokens()

static NTSTATUS SepCompareTokens ( IN PTOKEN  FirstToken, IN PTOKEN  SecondToken, OUT PBOOLEAN  Equal  )

static

Definition at line 92 of file token.c.

{
    BOOLEAN Restricted, IsEqual = FALSE;

    ASSERT(FirstToken != SecondToken);

    /* Lock the tokens */
    SepAcquireTokenLockShared(FirstToken);
    SepAcquireTokenLockShared(SecondToken);

    /* FIXME: Check if every SID that is present in either token is also present in the other one */

    Restricted = SeTokenIsRestricted(FirstToken);
    if (Restricted == SeTokenIsRestricted(SecondToken))
    {
        if (Restricted)
        {
            /* FIXME: Check if every SID that is restricted in either token is also restricted in the other one */
        }

        /* FIXME: Check if every privilege that is present in either token is also present in the other one */
        DPRINT1("FIXME: Pretending tokens are equal!\n");
        IsEqual = TRUE;
    }

    /* Unlock the tokens */
    SepReleaseTokenLock(SecondToken);
    SepReleaseTokenLock(FirstToken);

    *Equal = IsEqual;
    return STATUS_SUCCESS;
}

Referenced by NtCompareTokens(), and SeExchangePrimaryToken().

SepCopyProxyData()

NTSTATUS NTAPI SepCopyProxyData	(	PVOID *	Dest,
		PVOID	Src
	)

Definition at line 225 of file token.c.

{
    UNIMPLEMENTED;
    return STATUS_NOT_IMPLEMENTED;
}

SepCreateSystemProcessToken()

PTOKEN NTAPI SepCreateSystemProcessToken

(

VOID

)

Definition at line 1145 of file token.c.

{
    LUID_AND_ATTRIBUTES Privileges[25];
    ULONG GroupAttributes, OwnerAttributes;
    SID_AND_ATTRIBUTES Groups[32];
    LARGE_INTEGER Expiration;
    SID_AND_ATTRIBUTES UserSid;
    ULONG GroupsLength;
    PSID PrimaryGroup;
    OBJECT_ATTRIBUTES ObjectAttributes;
    PSID Owner;
    ULONG i;
    PTOKEN Token;
    NTSTATUS Status;

    /* Don't ever expire */
    Expiration.QuadPart = -1;

    /* All groups mandatory and enabled */
    GroupAttributes = SE_GROUP_ENABLED | SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT;
    OwnerAttributes = SE_GROUP_ENABLED | SE_GROUP_OWNER | SE_GROUP_ENABLED_BY_DEFAULT;

    /* User is Local System */
    UserSid.Sid = SeLocalSystemSid;
    UserSid.Attributes = 0;

    /* Primary group is Local System */
    PrimaryGroup = SeLocalSystemSid;

    /* Owner is Administrators */
    Owner = SeAliasAdminsSid;

    /* Groups are Administrators, World, and Authenticated Users */
    Groups[0].Sid = SeAliasAdminsSid;
    Groups[0].Attributes = OwnerAttributes;
    Groups[1].Sid = SeWorldSid;
    Groups[1].Attributes = GroupAttributes;
    Groups[2].Sid = SeAuthenticatedUsersSid;
    Groups[2].Attributes = GroupAttributes;
    GroupsLength = sizeof(SID_AND_ATTRIBUTES) +
                   SeLengthSid(Groups[0].Sid) +
                   SeLengthSid(Groups[1].Sid) +
                   SeLengthSid(Groups[2].Sid);
    ASSERT(GroupsLength <= sizeof(Groups));

    /* Setup the privileges */
    i = 0;
    Privileges[i].Attributes = SE_PRIVILEGE_ENABLED_BY_DEFAULT | SE_PRIVILEGE_ENABLED;
    Privileges[i++].Luid = SeTcbPrivilege;

    Privileges[i].Attributes = 0;
    Privileges[i++].Luid = SeCreateTokenPrivilege;

    Privileges[i].Attributes = 0;
    Privileges[i++].Luid = SeTakeOwnershipPrivilege;

    Privileges[i].Attributes = SE_PRIVILEGE_ENABLED_BY_DEFAULT | SE_PRIVILEGE_ENABLED;
    Privileges[i++].Luid = SeCreatePagefilePrivilege;

    Privileges[i].Attributes = SE_PRIVILEGE_ENABLED_BY_DEFAULT | SE_PRIVILEGE_ENABLED;
    Privileges[i++].Luid = SeLockMemoryPrivilege;

    Privileges[i].Attributes = 0;
    Privileges[i++].Luid = SeAssignPrimaryTokenPrivilege;

    Privileges[i].Attributes = 0;
    Privileges[i++].Luid = SeIncreaseQuotaPrivilege;

    Privileges[i].Attributes = SE_PRIVILEGE_ENABLED_BY_DEFAULT | SE_PRIVILEGE_ENABLED;
    Privileges[i++].Luid = SeIncreaseBasePriorityPrivilege;

    Privileges[i].Attributes = SE_PRIVILEGE_ENABLED_BY_DEFAULT | SE_PRIVILEGE_ENABLED;
    Privileges[i++].Luid = SeCreatePermanentPrivilege;

    Privileges[i].Attributes = SE_PRIVILEGE_ENABLED_BY_DEFAULT | SE_PRIVILEGE_ENABLED;
    Privileges[i++].Luid = SeDebugPrivilege;

    Privileges[i].Attributes = SE_PRIVILEGE_ENABLED_BY_DEFAULT | SE_PRIVILEGE_ENABLED;
    Privileges[i++].Luid = SeAuditPrivilege;

    Privileges[i].Attributes = 0;
    Privileges[i++].Luid = SeSecurityPrivilege;

    Privileges[i].Attributes = 0;
    Privileges[i++].Luid = SeSystemEnvironmentPrivilege;

    Privileges[i].Attributes = SE_PRIVILEGE_ENABLED_BY_DEFAULT | SE_PRIVILEGE_ENABLED;
    Privileges[i++].Luid = SeChangeNotifyPrivilege;

    Privileges[i].Attributes = 0;
    Privileges[i++].Luid = SeBackupPrivilege;

    Privileges[i].Attributes = 0;
    Privileges[i++].Luid = SeRestorePrivilege;

    Privileges[i].Attributes = 0;
    Privileges[i++].Luid = SeShutdownPrivilege;

    Privileges[i].Attributes = 0;
    Privileges[i++].Luid = SeLoadDriverPrivilege;

    Privileges[i].Attributes = SE_PRIVILEGE_ENABLED_BY_DEFAULT | SE_PRIVILEGE_ENABLED;
    Privileges[i++].Luid = SeProfileSingleProcessPrivilege;

    Privileges[i].Attributes = 0;
    Privileges[i++].Luid = SeSystemtimePrivilege;
    ASSERT(i == 20);

    /* Setup the object attributes */
    InitializeObjectAttributes(&ObjectAttributes, NULL, 0, NULL, NULL);
    ASSERT(SeSystemDefaultDacl != NULL);

    /* Create the token */
    Status = SepCreateToken((PHANDLE)&Token,
                            KernelMode,
                            0,
                            &ObjectAttributes,
                            TokenPrimary,
                            SecurityAnonymous,
                            &SeSystemAuthenticationId,
                            &Expiration,
                            &UserSid,
                            3,
                            Groups,
                            GroupsLength,
                            20,
                            Privileges,
                            Owner,
                            PrimaryGroup,
                            SeSystemDefaultDacl,
                            &SeSystemTokenSource,
                            TRUE);
    ASSERT(Status == STATUS_SUCCESS);

    /* Return the token */
    return Token;
}

Referenced by SepInitializationPhase0().

SepCreateToken()

NTSTATUS NTAPI SepCreateToken	(	_Out_ PHANDLE	TokenHandle,
		_In_ KPROCESSOR_MODE	PreviousMode,
		_In_ ACCESS_MASK	DesiredAccess,
		_In_opt_ POBJECT_ATTRIBUTES	ObjectAttributes,
		_In_ TOKEN_TYPE	TokenType,
		_In_ SECURITY_IMPERSONATION_LEVEL	ImpersonationLevel,
		_In_ PLUID	AuthenticationId,
		_In_ PLARGE_INTEGER	ExpirationTime,
		_In_ PSID_AND_ATTRIBUTES	User,
		_In_ ULONG	GroupCount,
		_In_ PSID_AND_ATTRIBUTES	Groups,
		_In_ ULONG	GroupsLength,
		_In_ ULONG	PrivilegeCount,
		_In_ PLUID_AND_ATTRIBUTES	Privileges,
		_In_opt_ PSID	Owner,
		_In_ PSID	PrimaryGroup,
		_In_opt_ PACL	DefaultDacl,
		_In_ PTOKEN_SOURCE	TokenSource,
		_In_ BOOLEAN	SystemToken
	)

Definition at line 882 of file token.c.

{
    NTSTATUS Status;
    PTOKEN AccessToken;
    ULONG TokenFlags = 0;
    ULONG PrimaryGroupIndex, DefaultOwnerIndex;
    LUID TokenId;
    LUID ModifiedId;
    PVOID EndMem;
    ULONG PrivilegesLength;
    ULONG UserGroupsLength;
    ULONG VariableLength;
    ULONG TotalSize;
    ULONG i;

    PAGED_CODE();

    /* Loop all groups */
    for (i = 0; i < GroupCount; i++)
    {
        /* Check for mandatory groups */
        if (Groups[i].Attributes & SE_GROUP_MANDATORY)
        {
            /* Force them to be enabled */
            Groups[i].Attributes |= (SE_GROUP_ENABLED | SE_GROUP_ENABLED_BY_DEFAULT);
        }

        /* Check of the group is an admin group */
        if (RtlEqualSid(SeAliasAdminsSid, Groups[i].Sid))
        {
            /* Remember this so we can optimize queries later */
            TokenFlags |= TOKEN_HAS_ADMIN_GROUP;
        }
    }

    /* Allocate unique IDs for the token */
    ExAllocateLocallyUniqueId(&TokenId);
    ExAllocateLocallyUniqueId(&ModifiedId);

    /* Compute how much size we need to allocate for the token */

    /* Privileges size */
    PrivilegesLength = PrivilegeCount * sizeof(LUID_AND_ATTRIBUTES);
    PrivilegesLength = ALIGN_UP_BY(PrivilegesLength, sizeof(PVOID));

    /* User and groups size */
    UserGroupsLength = (1 + GroupCount) * sizeof(SID_AND_ATTRIBUTES);
    UserGroupsLength += RtlLengthSid(User->Sid);
    for (i = 0; i < GroupCount; i++)
    {
        UserGroupsLength += RtlLengthSid(Groups[i].Sid);
    }
    UserGroupsLength = ALIGN_UP_BY(UserGroupsLength, sizeof(PVOID));

    /* Add the additional groups array length */
    UserGroupsLength += ALIGN_UP_BY(GroupsLength, sizeof(PVOID));

    VariableLength = PrivilegesLength + UserGroupsLength;
    TotalSize = FIELD_OFFSET(TOKEN, VariablePart) + VariableLength;

    Status = ObCreateObject(PreviousMode,
                            SeTokenObjectType,
                            ObjectAttributes,
                            PreviousMode,
                            NULL,
                            TotalSize,
                            0,
                            0,
                            (PVOID*)&AccessToken);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("ObCreateObject() failed (Status 0x%lx)\n", Status);
        return Status;
    }

    /* Zero out the buffer and initialize the token */
    RtlZeroMemory(AccessToken, TotalSize);

    RtlCopyLuid(&AccessToken->TokenId, &TokenId);

    AccessToken->TokenType = TokenType;
    AccessToken->ImpersonationLevel = ImpersonationLevel;

    AccessToken->TokenLock = &SepTokenLock; // FIXME: Global lock!

    RtlCopyLuid(&AccessToken->TokenSource.SourceIdentifier,
                &TokenSource->SourceIdentifier);
    RtlCopyMemory(AccessToken->TokenSource.SourceName,
                  TokenSource->SourceName,
                  sizeof(TokenSource->SourceName));

    AccessToken->ExpirationTime = *ExpirationTime;
    RtlCopyLuid(&AccessToken->ModifiedId, &ModifiedId);

    AccessToken->TokenFlags = TokenFlags & ~TOKEN_SESSION_NOT_REFERENCED;

    /* Copy and reference the logon session */
    RtlCopyLuid(&AccessToken->AuthenticationId, AuthenticationId);
    Status = SepRmReferenceLogonSession(&AccessToken->AuthenticationId);
    if (!NT_SUCCESS(Status))
    {
        /* No logon session could be found, bail out */
        DPRINT1("SepRmReferenceLogonSession() failed (Status 0x%lx)\n", Status);
        /* Set the flag for proper cleanup by the delete procedure */
        AccessToken->TokenFlags |= TOKEN_SESSION_NOT_REFERENCED;
        goto Quit;
    }

    /* Assign the data that reside in the TOKEN's variable information area */
    AccessToken->VariableLength = VariableLength;
    EndMem = (PVOID)&AccessToken->VariablePart;

    /* Copy the privileges */
    AccessToken->PrivilegeCount = PrivilegeCount;
    AccessToken->Privileges = NULL;
    if (PrivilegeCount > 0)
    {
        AccessToken->Privileges = EndMem;
        EndMem = (PVOID)((ULONG_PTR)EndMem + PrivilegesLength);
        VariableLength -= PrivilegesLength;

        if (PreviousMode != KernelMode)
        {
            _SEH2_TRY
            {
                RtlCopyMemory(AccessToken->Privileges,
                              Privileges,
                              PrivilegeCount * sizeof(LUID_AND_ATTRIBUTES));
            }
            _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
            {
                Status = _SEH2_GetExceptionCode();
            }
            _SEH2_END;
        }
        else
        {
            RtlCopyMemory(AccessToken->Privileges,
                          Privileges,
                          PrivilegeCount * sizeof(LUID_AND_ATTRIBUTES));
        }

        if (!NT_SUCCESS(Status))
            goto Quit;
    }

    /* Update the privilege flags */
    SepUpdatePrivilegeFlagsToken(AccessToken);

    /* Copy the user and groups */
    AccessToken->UserAndGroupCount = 1 + GroupCount;
    AccessToken->UserAndGroups = EndMem;
    EndMem = &AccessToken->UserAndGroups[AccessToken->UserAndGroupCount];
    VariableLength -= ((ULONG_PTR)EndMem - (ULONG_PTR)AccessToken->UserAndGroups);

    Status = RtlCopySidAndAttributesArray(1,
                                          User,
                                          VariableLength,
                                          &AccessToken->UserAndGroups[0],
                                          EndMem,
                                          &EndMem,
                                          &VariableLength);
    if (!NT_SUCCESS(Status))
        goto Quit;

    Status = RtlCopySidAndAttributesArray(GroupCount,
                                          Groups,
                                          VariableLength,
                                          &AccessToken->UserAndGroups[1],
                                          EndMem,
                                          &EndMem,
                                          &VariableLength);
    if (!NT_SUCCESS(Status))
        goto Quit;

    /* Find the token primary group and default owner */
    Status = SepFindPrimaryGroupAndDefaultOwner(AccessToken,
                                                PrimaryGroup,
                                                Owner,
                                                &PrimaryGroupIndex,
                                                &DefaultOwnerIndex);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("SepFindPrimaryGroupAndDefaultOwner failed (Status 0x%lx)\n", Status);
        goto Quit;
    }

    AccessToken->PrimaryGroup = AccessToken->UserAndGroups[PrimaryGroupIndex].Sid;
    AccessToken->DefaultOwnerIndex = DefaultOwnerIndex;

    /* Now allocate the TOKEN's dynamic information area and set the data */
    AccessToken->DynamicAvailable = 0; // Unused memory in the dynamic area.
    AccessToken->DynamicPart = NULL;
    if (DefaultDacl != NULL)
    {
        AccessToken->DynamicPart = ExAllocatePoolWithTag(PagedPool,
                                                         DefaultDacl->AclSize,
                                                         TAG_TOKEN_DYNAMIC);
        if (AccessToken->DynamicPart == NULL)
        {
            Status = STATUS_INSUFFICIENT_RESOURCES;
            goto Quit;
        }
        EndMem = (PVOID)AccessToken->DynamicPart;

        AccessToken->DefaultDacl = EndMem;

        RtlCopyMemory(AccessToken->DefaultDacl,
                      DefaultDacl,
                      DefaultDacl->AclSize);
    }

    /* Insert the token only if it's not the system token, otherwise return it directly */
    if (!SystemToken)
    {
        Status = ObInsertObject(AccessToken,
                                NULL,
                                DesiredAccess,
                                0,
                                NULL,
                                TokenHandle);
        if (!NT_SUCCESS(Status))
        {
            DPRINT1("ObInsertObject() failed (Status 0x%lx)\n", Status);
        }
    }
    else
    {
        /* Return pointer instead of handle */
        *TokenHandle = (HANDLE)AccessToken;
    }

Quit:
    if (!NT_SUCCESS(Status))
    {
        /* Dereference the token, the delete procedure will clean it up */
        ObDereferenceObject(AccessToken);
    }

    return Status;
}

Referenced by NtCreateToken(), and SepCreateSystemProcessToken().

SepDeleteToken()

VOID NTAPI SepDeleteToken

(

PVOID

ObjectBody

)

Definition at line 817 of file token.c.

{
    PTOKEN AccessToken = (PTOKEN)ObjectBody;

    DPRINT("SepDeleteToken()\n");

    /* Dereference the logon session */
    if ((AccessToken->TokenFlags & TOKEN_SESSION_NOT_REFERENCED) == 0)
        SepRmDereferenceLogonSession(&AccessToken->AuthenticationId);

    /* Delete the dynamic information area */
    if (AccessToken->DynamicPart)
        ExFreePoolWithTag(AccessToken->DynamicPart, TAG_TOKEN_DYNAMIC);
}

Referenced by SepInitializeTokenImplementation().

SepDuplicateToken()

NTSTATUS NTAPI SepDuplicateToken	(	_In_ PTOKEN	Token,
		_In_opt_ POBJECT_ATTRIBUTES	ObjectAttributes,
		_In_ BOOLEAN	EffectiveOnly,
		_In_ TOKEN_TYPE	TokenType,
		_In_ SECURITY_IMPERSONATION_LEVEL	Level,
		_In_ KPROCESSOR_MODE	PreviousMode,
		_Out_ PTOKEN *	NewAccessToken
	)

Definition at line 441 of file token.c.

{
    NTSTATUS Status;
    PTOKEN AccessToken;
    PVOID EndMem;
    ULONG VariableLength;
    ULONG TotalSize;

    PAGED_CODE();

    /* Compute how much size we need to allocate for the token */
    VariableLength = Token->VariableLength;
    TotalSize = FIELD_OFFSET(TOKEN, VariablePart) + VariableLength;

    Status = ObCreateObject(PreviousMode,
                            SeTokenObjectType,
                            ObjectAttributes,
                            PreviousMode,
                            NULL,
                            TotalSize,
                            0,
                            0,
                            (PVOID*)&AccessToken);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("ObCreateObject() failed (Status 0x%lx)\n", Status);
        return Status;
    }

    /* Zero out the buffer and initialize the token */
    RtlZeroMemory(AccessToken, TotalSize);

    ExAllocateLocallyUniqueId(&AccessToken->TokenId);

    AccessToken->TokenType = TokenType;
    AccessToken->ImpersonationLevel = Level;

    AccessToken->TokenLock = &SepTokenLock; // FIXME: Global lock!

    /* Copy the immutable fields */
    RtlCopyLuid(&AccessToken->TokenSource.SourceIdentifier,
                &Token->TokenSource.SourceIdentifier);
    RtlCopyMemory(AccessToken->TokenSource.SourceName,
                  Token->TokenSource.SourceName,
                  sizeof(Token->TokenSource.SourceName));

    AccessToken->AuthenticationId = Token->AuthenticationId;
    AccessToken->ParentTokenId = Token->ParentTokenId;
    AccessToken->ExpirationTime = Token->ExpirationTime;
    AccessToken->OriginatingLogonSession = Token->OriginatingLogonSession;


    /* Lock the source token and copy the mutable fields */
    SepAcquireTokenLockExclusive(Token);

    AccessToken->SessionId = Token->SessionId;
    RtlCopyLuid(&AccessToken->ModifiedId, &Token->ModifiedId);

    AccessToken->TokenFlags = Token->TokenFlags & ~TOKEN_SESSION_NOT_REFERENCED;

    /* Copy and reference the logon session */
    // RtlCopyLuid(&AccessToken->AuthenticationId, &Token->AuthenticationId);
    Status = SepRmReferenceLogonSession(&AccessToken->AuthenticationId);
    if (!NT_SUCCESS(Status))
    {
        /* No logon session could be found, bail out */
        DPRINT1("SepRmReferenceLogonSession() failed (Status 0x%lx)\n", Status);
        /* Set the flag for proper cleanup by the delete procedure */
        AccessToken->TokenFlags |= TOKEN_SESSION_NOT_REFERENCED;
        goto Quit;
    }

    /* Assign the data that reside in the TOKEN's variable information area */
    AccessToken->VariableLength = VariableLength;
    EndMem = (PVOID)&AccessToken->VariablePart;

    /* Copy the privileges */
    AccessToken->PrivilegeCount = 0;
    AccessToken->Privileges = NULL;
    if (Token->Privileges && (Token->PrivilegeCount > 0))
    {
        ULONG PrivilegesLength = Token->PrivilegeCount * sizeof(LUID_AND_ATTRIBUTES);
        PrivilegesLength = ALIGN_UP_BY(PrivilegesLength, sizeof(PVOID));

        ASSERT(VariableLength >= PrivilegesLength);

        AccessToken->PrivilegeCount = Token->PrivilegeCount;
        AccessToken->Privileges = EndMem;
        EndMem = (PVOID)((ULONG_PTR)EndMem + PrivilegesLength);
        VariableLength -= PrivilegesLength;

        RtlCopyMemory(AccessToken->Privileges,
                      Token->Privileges,
                      AccessToken->PrivilegeCount * sizeof(LUID_AND_ATTRIBUTES));
    }

    /* Copy the user and groups */
    AccessToken->UserAndGroupCount = 0;
    AccessToken->UserAndGroups = NULL;
    if (Token->UserAndGroups && (Token->UserAndGroupCount > 0))
    {
        AccessToken->UserAndGroupCount = Token->UserAndGroupCount;
        AccessToken->UserAndGroups = EndMem;
        EndMem = &AccessToken->UserAndGroups[AccessToken->UserAndGroupCount];
        VariableLength -= ((ULONG_PTR)EndMem - (ULONG_PTR)AccessToken->UserAndGroups);

        Status = RtlCopySidAndAttributesArray(AccessToken->UserAndGroupCount,
                                              Token->UserAndGroups,