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windows-nt/Source/XPSP1/NT/base/wow64/regremap/regremap.c
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/*++
Copyright (c) 1999-2001 Microsoft Corporation
Module Name:
regredir.c
Abstract:
This module contains the APis to redirect 32bit registry calls. All 32bit wow process must
use following set of wowregistry APIs to manipulate registry so that 32-bit and 64-bit registry
can co exist in the same system registry.
Some functionality hasn't been optimized yet. After successful implementation those need to
be optimized.
Author:
ATM Shafiqul Khalid (askhalid) 15-Oct-1999
Revision History:
--*/
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <windows.h>
#include <stdio.h>
#include <ntregapi.h>
#include <stdlib.h>
#include "regremap.h"
#include "wow64reg.h"
#include "wow64reg\reflectr.h"
//#include "wow64.h"
PVOID
Wow64AllocateTemp(
SIZE_T Size
);
#ifdef WOW64_LOG_REGISTRY
WCHAR TempBuff[MAX_PATH];
DWORD TempLen = MAX_PATH;
NTSTATUS //should move to the regremap.h header
ObjectAttributesToKeyName (
POBJECT_ATTRIBUTES ObjectAttributes,
PWCHAR AbsPath,
BOOL *bPatched,
DWORD *ParentLen
);
#endif
#ifdef LOG_REGISTRY
void
LogMsgKeyHandle (
char *str,
HANDLE hKey,
DWORD res
)
{
WCHAR AbsPath[MAX_PATH];
DWORD Len = MAX_PATH;
HandleToKeyName (hKey, AbsPath, &Len);
LOGPRINT( (ERRORLOG, "\nDEBUG: requested Node:%S Status:%x, Msg:%s", AbsPath, res, str));
};
#endif
//
// Need to move in the header file
//
NTSTATUS
RemapNtCreateKey(
OUT PHANDLE phPatchedHandle,
IN ACCESS_MASK DesiredAccess,
IN POBJECT_ATTRIBUTES ObjectAttributes,
IN ULONG TitleIndex,
IN PUNICODE_STRING Class OPTIONAL,
IN ULONG CreateOptions,
OUT PULONG Disposition OPTIONAL
);
NTSTATUS
Wow64NtCreateKey(
OUT PHANDLE KeyHandle,
IN ACCESS_MASK DesiredAccess,
IN POBJECT_ATTRIBUTES ObjectAttributes,
IN ULONG TitleIndex,
IN PUNICODE_STRING Class OPTIONAL,
IN ULONG CreateOptions,
OUT PULONG Disposition OPTIONAL
)
/*++
Routine Description:
An existing registry key may be opened, or a new one created,
with NtCreateKey.
If the specified key does not exist, an attempt is made to create it.
For the create attempt to succeed, the new node must be a direct
child of the node referred to by KeyHandle. If the node exists,
it is opened. Its value is not affected in any way.
Share access is computed from desired access.
NOTE:
If CreateOptions has REG_OPTION_BACKUP_RESTORE set, then
DesiredAccess will be ignored. If the caller has the
privilege SeBackupPrivilege asserted, a handle with
KEY_READ | ACCESS_SYSTEM_SECURITY will be returned.
If SeRestorePrivilege, then same but KEY_WRITE rather
than KEY_READ. If both, then both access sets. If neither
privilege is asserted, then the call will fail.
Arguments:
KeyHandle - Receives a Handle which is used to access the
specified key in the Registration Database.
DesiredAccess - Specifies the access rights desired.
ObjectAttributes - Specifies the attributes of the key being opened.
Note that a key name must be specified. If a Root Directory is
specified, the name is relative to the root. The name of the
object must be within the name space allocated to the Registry,
that is, all names beginning "\Registry". RootHandle, if
present, must be a handle to "\", or "\Registry", or a key
under "\Registry".
RootHandle must have been opened for KEY_CREATE_SUB_KEY access
if a new node is to be created.
NOTE: Object manager will capture and probe this argument.
TitleIndex - Specifies the index of the localized alias for
the name of the key. The title index specifies the index of
the localized alias for the name. Ignored if the key
already exists.
Class - Specifies the object class of the key. (To the registry
this is just a string.) Ignored if NULL.
CreateOptions - Optional control values:
REG_OPTION_VOLATILE - Object is not to be stored across boots.
Disposition - This optional parameter is a pointer to a variable
that will receive a value indicating whether a new Registry
key was created or an existing one opened:
REG_CREATED_NEW_KEY - A new Registry Key was created
REG_OPENED_EXISTING_KEY - An existing Registry Key was opened
Return Value:
NTSTATUS - Result code from call, among the following:
<TBS>
--*/
{
NTSTATUS St;
BOOL bRet = FALSE;
ULONG Disposition_Temp;
try {
if ( Disposition == NULL )
Disposition = &Disposition_Temp;
St = RemapNtCreateKey (
KeyHandle,
DesiredAccess,
ObjectAttributes,
TitleIndex,
Class ,
CreateOptions,
Disposition
);
if (!NT_SUCCESS(St))
bRet = TRUE;
if (!bRet)
if ( *KeyHandle != NULL)
bRet = TRUE;
//
// if total failure for thunked key, try if you can pull that key from 64bit hive.
// May be reflector should be running
//
if (!bRet ) {
//
// 2nd try only if no patch is required.
// i.e., success with NULL handle returned
//
St = NtCreateKey(
KeyHandle,
(~KEY_WOW64_RES) & DesiredAccess,
ObjectAttributes,
TitleIndex,
Class ,
CreateOptions,
Disposition
);
}
#ifdef WOW64_LOG_REGISTRY
TempLen = MAX_PATH;
ObjectAttributesToKeyName (
ObjectAttributes,
TempBuff,
&bRet,
NULL);
Wow64RegDbgPrint (( "\nNtCreateKeyEx IN:[%S]", TempBuff));
HandleToKeyName (*KeyHandle, TempBuff, &TempLen);
Wow64RegDbgPrint (( "\nNtCreateKeyEx OUT:[%S] Status:%x F:%x", TempBuff, DesiredAccess));
#endif
if (NT_SUCCESS(St))
Wow64RegSetKeyDirty (*KeyHandle ); // Need some clean/sync up on exit
if ( *Disposition == REG_CREATED_NEW_KEY )
UpdateKeyTag ( *KeyHandle,TAG_KEY_ATTRIBUTE_32BIT_WRITE );
} except( NULL, EXCEPTION_EXECUTE_HANDLER){
St = GetExceptionCode ();
}
return St;
}
NTSTATUS
Wow64NtDeleteKey(
IN HANDLE KeyHandle
)
/*++
Routine Description:
A registry key may be marked for delete, causing it to be removed
from the system. It will remain in the name space until the last
handle to it is closed.
Arguments:
KeyHandle - Specifies the handle of the Key to delete, must have
been opened for DELETE access.
Return Value:
NTSTATUS - Result code from call, among the following:
<TBS>
--*/
{
NTSTATUS St;
HKEY hRemap = Wow64OpenRemappedKeyOnReflection (KeyHandle);
St = NtDeleteKey(
KeyHandle
);
if (NT_SUCCESS (St) && ( hRemap != NULL ) )
Wow64RegDeleteKey (hRemap, NULL);
if ( hRemap != NULL )
NtClose ( hRemap );
return St;
}
NTSTATUS
Wow64NtDeleteValueKey(
IN HANDLE KeyHandle,
IN PUNICODE_STRING ValueName
)
/*++
Routine Description:
One of the value entries of a registry key may be removed with this
call. To remove the entire key, call NtDeleteKey.
The value entry with ValueName matching ValueName is removed from the key.
If no such entry exists, an error is returned.
Arguments:
KeyHandle - Specifies the handle of the key containing the value
entry of interest. Must have been opend for KEY_SET_VALUE access.
ValueName - The name of the value to be deleted. NULL is a legal name.
Return Value:
NTSTATUS - Result code from call, among the following:
<TBS>
--*/
{
NTSTATUS St;
St = NtDeleteValueKey(
KeyHandle,
ValueName
);
if (NT_SUCCESS(St))
Wow64RegSetKeyDirty (KeyHandle ); // Need some clean/sync up on exit
return St;
}
NTSTATUS
Wow64NtEnumerateKey(
IN HANDLE KeyHandle,
IN ULONG Index,
IN KEY_INFORMATION_CLASS KeyInformationClass,
IN PVOID KeyInformation,
IN ULONG Length,
IN PULONG ResultLength
)
/*++
Routine Description:
The sub keys of an open key may be enumerated with NtEnumerateKey.
NtEnumerateKey returns the name of the Index'th sub key of the open
key specified by KeyHandle. The value STATUS_NO_MORE_ENTRIES will be
returned if value of Index is larger than the number of sub keys.
Note that Index is simply a way to select among child keys. Two calls
to NtEnumerateKey with the same Index are NOT guaranteed to return
the same results.
If KeyInformation is not long enough to hold all requested data,
STATUS_BUFFER_OVERFLOW will be returned, and ResultLength will be
set to the number of bytes actually required.
Arguments:
KeyHandle - Handle of the key whose sub keys are to be enumerated. Must
be open for KEY_ENUMERATE_SUB_KEY access.
Index - Specifies the (0-based) number of the sub key to be returned.
KeyInformationClass - Specifies the type of information returned in
Buffer. One of the following types:
KeyBasicInformation - return last write time, title index, and name.
(see KEY_BASIC_INFORMATION structure)
KeyNodeInformation - return last write time, title index, name, class.
(see KEY_NODE_INFORMATION structure)
KeyInformation -Supplies pointer to buffer to receive the data.
Length - Length of KeyInformation in bytes.
ResultLength - Number of bytes actually written into KeyInformation.
Return Value:
NTSTATUS - Result code from call, among the following:
<TBS>
--*/
{
//
// if the handle is to ISN node then time to enumerate the right one
//
BOOL bRealigned=FALSE;
PVOID pTempKeyInfo;
NTSTATUS RetVal;
try {
if ( (SIZE_T)(KeyInformation) & (0x07) ) {
// allocate a buffer with correct alignment, to pass to the Win64 API
pTempKeyInfo = KeyInformation;
KeyInformation = Wow64AllocateTemp(Length);
RtlCopyMemory(KeyInformation, pTempKeyInfo, Length);
bRealigned = TRUE;
}
RetVal = NtEnumerateKey(
KeyHandle,
Index,
KeyInformationClass,
KeyInformation,
Length,
ResultLength
);
if (!NT_ERROR(RetVal) && bRealigned) {
RtlCopyMemory((PVOID)pTempKeyInfo, KeyInformation, Length);
}
} except( NULL, EXCEPTION_EXECUTE_HANDLER){
RetVal = GetExceptionCode ();
}
return RetVal;
}
NTSTATUS
Wow64NtEnumerateValueKey(
IN HANDLE KeyHandle,
IN ULONG Index,
IN KEY_VALUE_INFORMATION_CLASS KeyValueInformationClass,
IN PVOID KeyValueInformation,
IN ULONG Length,
IN PULONG ResultLength
)
/*++
Routine Description:
The value entries of an open key may be enumerated
with NtEnumerateValueKey.
NtEnumerateValueKey returns the name of the Index'th value
entry of the open key specified by KeyHandle. The value
STATUS_NO_MORE_ENTRIES will be returned if value of Index is
larger than the number of sub keys.
Note that Index is simply a way to select among value
entries. Two calls to NtEnumerateValueKey with the same Index
are NOT guaranteed to return the same results.
If KeyValueInformation is not long enough to hold all requested data,
STATUS_BUFFER_OVERFLOW will be returned, and ResultLength will be
set to the number of bytes actually required.
Arguments:
KeyHandle - Handle of the key whose value entries are to be enumerated.
Must have been opened with KEY_QUERY_VALUE access.
Index - Specifies the (0-based) number of the sub key to be returned.
KeyValueInformationClass - Specifies the type of information returned
in Buffer. One of the following types:
KeyValueBasicInformation - return time of last write,
title index, and name. (See KEY_VALUE_BASIC_INFORMATION)
KeyValueFullInformation - return time of last write,
title index, name, class. (See KEY_VALUE_FULL_INFORMATION)
KeyValueInformation -Supplies pointer to buffer to receive the data.
Length - Length of KeyValueInformation in bytes.
ResultLength - Number of bytes actually written into KeyValueInformation.
Return Value:
NTSTATUS - Result code from call, among the following:
<TBS>
--*/
{
return NtEnumerateValueKey(
KeyHandle,
Index,
KeyValueInformationClass,
KeyValueInformation,
Length,
ResultLength
);
}
NTSTATUS
Wow64NtFlushKey(
IN HANDLE KeyHandle
)
/*++
Routine Description:
Changes made by NtCreateKey or NtSetKey may be flushed to disk with
NtFlushKey.
NtFlushKey will not return to its caller until any changed data
associated with KeyHandle has been written to permanent store.
WARNING: NtFlushKey will flush the entire registry tree, and thus will
burn cycles and I/O.
Arguments:
KeyHandle - Handle of open key to be flushed.
Return Value:
NTSTATUS - Result code from call, among the following:
<TBS>
--*/
{
return NtFlushKey(
KeyHandle
);
}
NTSTATUS
Wow64NtInitializeRegistry(
IN USHORT BootCondition
)
/*++
Routine Description:
This routine is called in 2 situations:
1) It is called from SM after autocheck (chkdsk) has
run and the paging files have been opened. It's function is
to bind in memory hives to their files, and to open any other
files yet to be used.
2) It is called from SC after the current boot has been accepted
and the control set used for the boot process should be saved
as the LKG control set.
After this routine accomplishes the work of situation #1 and
#2, further requests for such work will not be carried out.
Arguments:
BootCondition -
REG_INIT_BOOT_SM - The routine has been called from SM
in situation #1.
REG_INIT_BOOT_SETUP - The routine has been called to perform
situation #1 work but has been called
from setup and needs to do some special
work.
REG_INIT_BOOT_ACCEPTED_BASE + Num
(where 0 < Num < 1000) - The routine has been called
in situation #2. "Num" is the
number of the control set
to which the boot control set
should be saved.
Return Value:
NTSTATUS - Result code from call, among the following:
STATUS_SUCCESS - it worked
STATUS_ACCESS_DENIED - the routine has already done the work
requested and will not do it again.
--*/
{
return NtInitializeRegistry(
BootCondition
);
}
NTSTATUS
Wow64NtNotifyChangeKey(
IN HANDLE KeyHandle,
IN HANDLE Event OPTIONAL,
IN PIO_APC_ROUTINE ApcRoutine OPTIONAL,
IN PVOID ApcContext OPTIONAL,
OUT PIO_STATUS_BLOCK IoStatusBlock,
IN ULONG CompletionFilter,
IN BOOLEAN WatchTree,
OUT PVOID Buffer,
IN ULONG BufferSize,
IN BOOLEAN Asynchronous
)
/*++
Routine Description:
Notification of key creation, deletion, and modification may be
obtained by calling NtNotifyChangeKey.
NtNotifyChangeKey monitors changes to a key - if the key or
subtree specified by KeyHandle are modified, the service notifies
its caller. It also returns the name(s) of the key(s) that changed.
All names are specified relative to the key that the handle represents
(therefore a NULL name represents that key). The service completes
once the key or subtree has been modified based on the supplied
CompletionFilter. The service is a "single shot" and therefore
needs to be reinvoked to watch the key for further changes.
The operation of this service begins by opening a key for KEY_NOTIFY
access. Once the handle is returned, the NtNotifyChangeKey service
may be invoked to begin watching the values and subkeys of the
specified key for changes. The first time the service is invoked,
the BufferSize parameter supplies not only the size of the user's
Buffer, but also the size of the buffer that will be used by the
Registry to store names of keys that have changed. Likewise, the
CompletionFilter and WatchTree parameters on the first call indicate
how notification should operate for all calls using the supplied
KeyHandle. These two parameters are ignored on subsequent calls
to the API with the same instance of KeyHandle.
Once a modification is made that should be reported, the Registry will
complete the service. The names of the files that have changed since
the last time the service was called will be placed into the caller's
output Buffer. The Information field of IoStatusBlock will contain
the number of bytes placed in Buffer, or zero if too many keys have
changed since the last time the service was called, in which case
the application must Query and Enumerate the key and sub keys to
discover changes. The Status field of IoStatusBlock will contain
the actual status of the call.
If Asynchronous is TRUE, then Event, if specified, will be set to
the Signaled state. If no Event parameter was specified, then
KeyHandle will be set to the Signaled state. If an ApcRoutine
was specified, it is invoked with the ApcContext and the address of the
IoStatusBlock as its arguments. If Asynchronous is FALSE, Event,
ApcRoutine, and ApcContext are ignored.
This service requires KEY_NOTIFY access to the key that was
actually modified
The notify "session" is terminated by closing KeyHandle.
Arguments:
KeyHandle-- Supplies a handle to an open key. This handle is
effectively the notify handle, because only one set of
notify parameters may be set against it.
Event - An optional handle to an event to be set to the
Signaled state when the operation completes.
ApcRoutine - An optional procedure to be invoked once the
operation completes. For more information about this
parameter see the NtReadFile system service description.
If PreviousMode == Kernel, this parameter is an optional
pointer to a WORK_QUEUE_ITEM to be queued when the notify
is signaled.
ApcContext - A pointer to pass as an argument to the ApcRoutine,
if one was specified, when the operation completes. This
argument is required if an ApcRoutine was specified.
If PreviousMode == Kernel, this parameter is an optional
WORK_QUEUE_TYPE describing the queue to be used. This argument
is required if an ApcRoutine was specified.
IoStatusBlock - A variable to receive the final completion status.
For more information about this parameter see the NtCreateFile
system service description.
CompletionFilter -- Specifies a set of flags that indicate the
types of operations on the key or its value that cause the
call to complete. The following are valid flags for this parameter:
REG_NOTIFY_CHANGE_NAME -- Specifies that the call should be
completed if a subkey is added or deleted.
REG_NOTIFY_CHANGE_ATTRIBUTES -- Specifies that the call should
be completed if the attributes (e.g.: ACL) of the key or
any subkey are changed.
REG_NOTIFY_CHANGE_LAST_SET -- Specifies that the call should be
completed if the lastWriteTime of the key or any of its
subkeys is changed. (Ie. if the value of the key or any
subkey is changed).
REG_NOTIFY_CHANGE_SECURITY -- Specifies that the call should be
completed if the security information (e.g. ACL) on the key
or any subkey is changed.
WatchTree -- A BOOLEAN value that, if TRUE, specifies that all
changes in the subtree of this key should also be reported.
If FALSE, only changes to this key, its value, and its immediate
subkeys (but not their values nor their subkeys) are reported.
Buffer -- A variable to receive the name(s) of the key(s) that
changed. See REG_NOTIFY_INFORMATION.
BufferSize -- Specifies the length of Buffer.
Asynchronous -- If FALSE, call will not return until
complete (synchronous) if TRUE, call may return STATUS_PENDING.
Obs:
Since NtNotifyChangeMultipleKeys, this routine is kept only for bacwards compatibility
Return Value:
NTSTATUS - Result code from call, among the following:
<TBS>
--*/
{
return NtNotifyChangeKey(
KeyHandle,
Event ,
ApcRoutine ,
ApcContext ,
IoStatusBlock,
CompletionFilter,
WatchTree,
Buffer,
BufferSize,
Asynchronous
);
}
NTSTATUS
Wow64NtNotifyChangeMultipleKeys(
IN HANDLE MasterKeyHandle,
IN ULONG Count,
IN OBJECT_ATTRIBUTES SlaveObjects[],
IN HANDLE Event OPTIONAL,
IN PIO_APC_ROUTINE ApcRoutine OPTIONAL,
IN PVOID ApcContext OPTIONAL,
OUT PIO_STATUS_BLOCK IoStatusBlock,
IN ULONG CompletionFilter,
IN BOOLEAN WatchTree,
OUT PVOID Buffer,
IN ULONG BufferSize,
IN BOOLEAN Asynchronous
)
/*++
Routine Description:
Notificaion of creation, deletion and modification on multiple keys
may be obtained with NtNotifyChangeMultipleKeys.
NtNotifyMultipleKeys monitors changes to any of the MasterKeyHandle
or one of SlaveObjects and/or their subtrees, whichever occurs first.
When an event on these keys is triggered, the notification is considered
fulfilled, and has to be "armed" again, in order to watch for further
changes.
The mechanism is similar to the one described in NtNotifyChangeKey.
The MasterKeyHandle key, give the caller control over the lifetime
of the notification. The notification will live as long as the caller
keeps the MasterKeyHandle open, or an event is triggered.
The caller doesn't have to open the SlaveKeys. He will provide the
routine with an array of OBJECT_ATTRIBUTES, describing the slave objects.
The routine will open the objects, and ensure keep a reference on them
untill the back-end side will close them.
The notify "session" is terminated by closing MasterKeyHandle.
Obs:
For the time being, the routine supports only one slave object. When more
than one slave object is provided, the routine will signal an error of
STATUS_INVALID_PARAMETER.
However, the interface is designed for future enhancements (taking an
array of slave objects), that may be provided with future versions(w2001).
When no slave object is supplied (i.e. Count == 0) we have the identical
behavior as for NtNotifyChangeKey.
Arguments:
MasterKeyHandle - Supplies a handle to an open key. This handle is
the "master handle". It has control overthe lifetime of the
notification.
Count - Number of slave objects. For the time being, this should be 1
SlaveObjects - Array of slave objects. Only the attributes of the
objects are provided, so the caller doesn't have to take care
of them.
Event,ApcRoutine,ApcContext,IoStatusBlock,CompletionFilter,WatchTree,
Buffer,BufferSize,Asynchronous - same as for NtNotifyChangeKey
Return Value:
NTSTATUS - Result code from call, among the following:
<TBS>
--*/
{
return NtNotifyChangeMultipleKeys(
MasterKeyHandle,
Count,
SlaveObjects,
Event,
ApcRoutine,
ApcContext,
IoStatusBlock,
CompletionFilter,
WatchTree,
Buffer,
BufferSize,
Asynchronous
);
}
NTSTATUS
Wow64NtOpenKey(
OUT PHANDLE KeyHandle,
IN ACCESS_MASK DesiredAccess,
IN POBJECT_ATTRIBUTES ObjectAttributes
)
/*++
Routine Description:
A registry key which already exists may be opened with NtOpenKey.
Share access is computed from desired access.
Arguments:
KeyHandle - Receives a Handle which is used to access the
specified key in the Registration Database.
DesiredAccess - Specifies the access rights desired.
ObjectAttributes - Specifies the attributes of the key being opened.
Note that a key name must be specified. If a Root Directory
is specified, the name is relative to the root. The name of
the object must be within the name space allocated to the
Registry, that is, all names beginning "\Registry". RootHandle,
if present, must be a handle to "\", or "\Registry", or a
key under "\Registry". If the specified key does not exist, or
access requested is not allowed, the operation will fail.
NOTE: Object manager will capture and probe this argument.
Return Value:
NTSTATUS - Result code from call, among the following:
<TBS>
--*/
{
NTSTATUS St;
BOOL bRet = FALSE;
try {
St = OpenIsnNodeByObjectAttributes (
ObjectAttributes,
DesiredAccess,
KeyHandle );
if (!NT_SUCCESS(St))
bRet = TRUE;
if ( !bRet )
if ( *KeyHandle != NULL)
bRet = TRUE;
if ( !bRet ) {
St = NtOpenKey(
KeyHandle,
(~KEY_WOW64_RES) & DesiredAccess,
ObjectAttributes
);
}
#ifdef WOW64_LOG_REGISTRY
TempLen = MAX_PATH;
ObjectAttributesToKeyName (
ObjectAttributes,
TempBuff,
&bRet,
NULL
);
Wow64RegDbgPrint (( "\nNtOpenKeyEx IN:[%S]", TempBuff));
HandleToKeyName (*KeyHandle, TempBuff, &TempLen);
Wow64RegDbgPrint (( "\nNtOpenKeyEx OUT:[%S] Status:%x F:%x", TempBuff, St, DesiredAccess));
#endif
} except( NULL, EXCEPTION_EXECUTE_HANDLER){
St = GetExceptionCode ();
}
return St;
}
NTSTATUS
Wow64NtQueryKey(
IN HANDLE KeyHandle,
IN KEY_INFORMATION_CLASS KeyInformationClass,
IN PVOID KeyInformation,
IN ULONG Length,
IN PULONG ResultLength
)
/*++
Routine Description:
Data about the class of a key, and the numbers and sizes of its
children and value entries may be queried with NtQueryKey.
If KeyValueInformation is not long enough to hold all requested data,
STATUS_BUFFER_OVERFLOW will be returned, and ResultLength will be
set to the number of bytes actually required.
NOTE: The returned lengths are guaranteed to be at least as
long as the described values, but may be longer in
some circumstances.
Arguments:
KeyHandle - Handle of the key to query data for. Must have been
opened for KEY_QUERY_KEY access.
KeyInformationClass - Specifies the type of information
returned in Buffer. One of the following types:
KeyBasicInformation - return last write time, title index, and name.
(See KEY_BASIC_INFORMATION)
KeyNodeInformation - return last write time, title index, name, class.
(See KEY_NODE_INFORMATION)
KeyFullInformation - return all data except for name and security.
(See KEY_FULL_INFORMATION)
KeyInformation -Supplies pointer to buffer to receive the data.
Length - Length of KeyInformation in bytes.
ResultLength - Number of bytes actually written into KeyInformation.
Return Value:
NTSTATUS - Result code from call, among the following:
<TBS>
--*/
{
BOOL bRealigned=FALSE;
PVOID pTempKeyInfo;
NTSTATUS RetVal;
try {
if ( (SIZE_T)(KeyInformation) & (0x07) ) {
// allocate a buffer with correct alignment, to pass to the Win64 API
pTempKeyInfo = KeyInformation;
KeyInformation = Wow64AllocateTemp(Length);
RtlCopyMemory(KeyInformation, pTempKeyInfo, Length);
bRealigned = TRUE;
}
RetVal = NtQueryKey(
KeyHandle,
KeyInformationClass,
KeyInformation,
Length,
ResultLength
);
if (!NT_ERROR(RetVal) && bRealigned) {
RtlCopyMemory((PVOID)pTempKeyInfo, KeyInformation, Length);
}
} except( NULL, EXCEPTION_EXECUTE_HANDLER){
RetVal = GetExceptionCode ();
}
return RetVal;
}
NTSTATUS
Wow64NtQueryValueKey(
IN HANDLE KeyHandle,
IN PUNICODE_STRING ValueName,
IN KEY_VALUE_INFORMATION_CLASS KeyValueInformationClass,
IN PVOID KeyValueInformation,
IN ULONG Length,
IN PULONG ResultLength
)
/*++
Routine Description:
The ValueName, TitleIndex, Type, and Data for any one of a key's
value entries may be queried with NtQueryValueKey.
If KeyValueInformation is not long enough to hold all requested data,
STATUS_BUFFER_OVERFLOW will be returned, and ResultLength will be
set to the number of bytes actually required.
Arguments:
KeyHandle - Handle of the key whose value entries are to be
enumerated. Must be open for KEY_QUERY_VALUE access.
Index - Specifies the (0-based) number of the sub key to be returned.
ValueName - The name of the value entry to return data for.
KeyValueInformationClass - Specifies the type of information
returned in KeyValueInformation. One of the following types:
KeyValueBasicInformation - return time of last write, title
index, and name. (See KEY_VALUE_BASIC_INFORMATION)
KeyValueFullInformation - return time of last write, title
index, name, class. (See KEY_VALUE_FULL_INFORMATION)
KeyValueInformation -Supplies pointer to buffer to receive the data.
Length - Length of KeyValueInformation in bytes.
ResultLength - Number of bytes actually written into KeyValueInformation.
Return Value:
NTSTATUS - Result code from call, among the following:
<TBS>
TMP: The IopQueryRegsitryValues() routine in the IO system assumes
STATUS_OBJECT_NAME_NOT_FOUND is returned if the value being queried
for does not exist.
--*/
{
BOOL bRealigned=FALSE;
PVOID pTempKeyInfo;
NTSTATUS RetVal;
try {
if ( (SIZE_T)(KeyValueInformation) & (0x07) ) {
// allocate a buffer with correct alignment, to pass to the Win64 API
pTempKeyInfo = KeyValueInformation;
KeyValueInformation = Wow64AllocateTemp(Length);
RtlCopyMemory(KeyValueInformation, pTempKeyInfo, Length);
bRealigned = TRUE;
}
RetVal = NtQueryValueKey(
KeyHandle,
ValueName,
KeyValueInformationClass,
KeyValueInformation,
Length,
ResultLength
);
if (!NT_ERROR(RetVal) && bRealigned) {
RtlCopyMemory((PVOID)pTempKeyInfo, KeyValueInformation, Length);
}
} except( NULL, EXCEPTION_EXECUTE_HANDLER){
RetVal = GetExceptionCode ();
}
return RetVal;
}
NTSTATUS
Wow64NtRestoreKey(
IN HANDLE KeyHandle,
IN HANDLE FileHandle,
IN ULONG Flags
)
/*++
Routine Description:
A file in the format created by NtSaveKey may be loaded into
the system's active registry with NtRestoreKey. An entire subtree
is created in the active registry as a result. All of the
data for the new sub-tree, including such things as security
descriptors, will be read from the source file. The data will
not be interpreted in any way.
This call (unlike NtLoadKey, see below) copies the data. The
system will NOT be using the source file after the call returns.
If the flag REG_WHOLE_HIVE_VOLATILE is specified, a new hive
can be created. It will be a memory only copy. The restore
must be done to the root of a hive (e.g. \registry\user\<name>)
If the flag is NOT set, then the target of the restore must
be an existing hive. The restore can be done to an arbitrary
location within an existing hive.
Caller must have SeRestorePrivilege privilege.
If the flag REG_REFRESH_HIVE is set (must be only flag) then the
the Hive will be restored to its state as of the last flush.
The hive must be marked NOLAZY_FLUSH, and the caller must have
TCB privilege, and the handle must point to the root of the hive.
If the refresh fails, the hive will be corrupt, and the system
will bugcheck. Notifies are flushed. The hive file will be resized,
the log will not. If there is any volatile space in the hive
being refreshed, STATUS_UNSUCCESSFUL will be returned. (It's much
too obscure a failure to warrant a new error code.)
If the flag REG_FORCE_RESTORE is set, the restore operation is done
even if the KeyHandle has open subkeys by other applications
Arguments:
KeyHandle - refers to the Key in the registry which is to be the
root of the new tree read from the disk. This key
will be replaced.
FileHandle - refers to file to restore from, must have read access.
Flags - If REG_WHOLE_HIVE_VOLATILE is set, then the copy will
exist only in memory, and disappear when the machine
is rebooted. No hive file will be created on disk.
Normally, a hive file will be created on disk.
Return Value:
NTSTATUS - values TBS.
--*/
{
return NtRestoreKey(
KeyHandle,
FileHandle,
Flags
);
}
NTSTATUS
Wow64NtSaveKey(
IN HANDLE KeyHandle,
IN HANDLE FileHandle
)
/*++
Routine Description:
A subtree of the active registry may be written to a file in a
format suitable for use with NtRestoreKey. All of the data in the
subtree, including such things as security descriptors will be written
out.
Caller must have SeBackupPrivilege privilege.
Arguments:
KeyHandle - refers to the Key in the registry which is the
root of the tree to be written to disk. The specified
node will be included in the data written out.
FileHandle - a file handle with write access to the target file
of interest.
Return Value:
NTSTATUS - values TBS
--*/
{
return NtSaveKey(
KeyHandle,
FileHandle
);
}
NTSTATUS
Wow64NtSaveMergedKeys(
IN HANDLE HighPrecedenceKeyHandle,
IN HANDLE LowPrecedenceKeyHandle,
IN HANDLE FileHandle
)
/*++
Routine Description:
Two subtrees of the registry can be merged. The resulting subtree may
be written to a file in a format suitable for use with NtRestoreKey.
All of the data in the subtree, including such things as security
descriptors will be written out.
Caller must have SeBackupPrivilege privilege.
Arguments:
HighPrecedenceKeyHandle - refers to the key in the registry which is the
root of the HighPrecedence tree. I.e., when a key is present in
both trees headded by the two keys, the key underneath HighPrecedence
tree will always prevail. The specified
node will be included in the data written out.
LowPrecedenceKeyHandle - referrs to the key in the registry which is the
root of the "second choice" tree. Keys from this trees get saved
when there is no equivalent key in the tree headded by HighPrecedenceKey
FileHandle - a file handle with write access to the target file
of interest.
Return Value:
NTSTATUS - values TBS
--*/
{
return NtSaveMergedKeys(
HighPrecedenceKeyHandle,
LowPrecedenceKeyHandle,
FileHandle
);
}
NTSTATUS
Wow64NtSetValueKey(
IN HANDLE KeyHandle,
IN PUNICODE_STRING ValueName,
IN ULONG TitleIndex OPTIONAL,
IN ULONG Type,
IN PVOID Data,
IN ULONG DataSize
)
/*++
Routine Description:
A value entry may be created or replaced with NtSetValueKey.
If a value entry with a Value ID (i.e. name) matching the
one specified by ValueName exists, it is deleted and replaced
with the one specified. If no such value entry exists, a new
one is created. NULL is a legal Value ID. While Value IDs must
be unique within any given key, the same Value ID may appear
in many different keys.
Arguments:
KeyHandle - Handle of the key whose for which a value entry is
to be set. Must be opened for KEY_SET_VALUE access.
ValueName - The unique (relative to the containing key) name
of the value entry. May be NULL.
TitleIndex - Supplies the title index for ValueName. The title
index specifies the index of the localized alias for the ValueName.
Type - The integer type number of the value entry.
Data - Pointer to buffer with actual data for the value entry.
DataSize - Size of Data buffer.
Return Value:
NTSTATUS - Result code from call, among the following:
<TBS>
--*/
{
WCHAR ThunkData[_MAX_PATH];
PWCHAR pCorrectData = (PWCHAR)Data;
ULONG CorrectDataSize = DataSize;
NTSTATUS St = STATUS_SUCCESS;
//
// thunk %ProgramFiles% ==> %ProgramFiles(x86)%
// %commonprogramfiles% ==> %commonprogramfiles(x86)%
//
try {
if ((DataSize > 0) &&
(DataSize < ( _MAX_PATH*sizeof (WCHAR) - 10) &&
((Type == REG_SZ) || (Type == REG_EXPAND_SZ) )) ) { //(x86)==>10 byte
PWCHAR p;
PWCHAR t;
//
// do the thunking here.
//
memcpy ( (PBYTE ) &ThunkData[0], (PBYTE)Data, DataSize);
ThunkData [DataSize/sizeof (WCHAR) ] = UNICODE_NULL; // make sure NULL terminated
if ( (p = wcsstr (ThunkData, L"%ProgramFiles%" )) != NULL ){
p +=13; //skip at the end of %ProgramFiles
} else if ( (p = wcsstr (ThunkData, L"%commonprogramfiles%")) != NULL ){
p +=19; //skip at the end of %commonprogramfiles
}
if (p) {
t = pCorrectData + (p - ThunkData);
wcscpy(p, L"(x86)"); //(x86)
wcscat(p, t); //copy rest of the string
pCorrectData = ThunkData;
CorrectDataSize += sizeof (L"(x86)");
} else if ( (p=wcsistr (Data, L"\\System32\\")) != NULL) {
if (IsOnReflectionByHandle ( KeyHandle ) ) {
wcsncpy (p, L"\\SysWow64\\",10);
}
}
}
} except (EXCEPTION_EXECUTE_HANDLER) {
St = GetExceptionCode ();
}
//
// Check if the operation should proceed. The key might be on access denied list.
//
if (NT_SUCCESS (St)) {
St = NtSetValueKey(
KeyHandle,
ValueName,
TitleIndex ,
Type,
(PVOID)pCorrectData,
CorrectDataSize
);
if (NT_SUCCESS(St)) {
Wow64RegSetKeyDirty (KeyHandle ); // Need some clean/sync up on exit
}
}
return St;
}
NTSTATUS
Wow64NtLoadKey(
IN POBJECT_ATTRIBUTES TargetKey,
IN POBJECT_ATTRIBUTES SourceFile
)
/*++
Routine Description:
A hive (file in the format created by NtSaveKey) may be linked
into the active registry with this call. UNLIKE NtRestoreKey,
the file specified to NtLoadKey will become the actual backing
store of part of the registry (that is, it will NOT be copied.)
The file may have an associated .log file.
If the hive file is marked as needing a .log file, and one is
not present, the call will fail.
The name specified by SourceFile must be such that ".log" can
be appended to it to generate the name of the log file. Thus,
on FAT file systems, the hive file may not have an extension.
Caller must have SeRestorePrivilege privilege.
This call is used by logon to make the user's profile available
in the registry. It is not intended for use doing backup,
restore, etc. Use NtRestoreKey for that.
Arguments:
TargetKey - specifies the path to a key to link the hive to.
path must be of the form "\registry\user\<username>"
SourceFile - specifies a file. while file could be remote,
that is strongly discouraged.
Return Value:
NTSTATUS - values TBS.
--*/
{
return NtLoadKey(TargetKey, SourceFile);
}
NTSTATUS
Wow64NtLoadKey2(
IN POBJECT_ATTRIBUTES TargetKey,
IN POBJECT_ATTRIBUTES SourceFile,
IN ULONG Flags
)
/*++
Routine Description:
A hive (file in the format created by NtSaveKey) may be linked
into the active registry with this call. UNLIKE NtRestoreKey,
the file specified to NtLoadKey will become the actual backing
store of part of the registry (that is, it will NOT be copied.)
The file may have an associated .log file.
If the hive file is marked as needing a .log file, and one is
not present, the call will fail.
The name specified by SourceFile must be such that ".log" can
be appended to it to generate the name of the log file. Thus,
on FAT file systems, the hive file may not have an extension.
Caller must have SeRestorePrivilege privilege.
This call is used by logon to make the user's profile available
in the registry. It is not intended for use doing backup,
restore, etc. Use NtRestoreKey for that.
Arguments:
TargetKey - specifies the path to a key to link the hive to.
path must be of the form "\registry\user\<username>"
SourceFile - specifies a file. while file could be remote,
that is strongly discouraged.
Flags - specifies any flags that should be used for the load operation.
The only valid flag is REG_NO_LAZY_FLUSH.
Return Value:
NTSTATUS - values TBS.
--*/
{
return NtLoadKey2(
TargetKey,
SourceFile,
Flags
);
}
NTSTATUS
Wow64NtUnloadKey(
IN POBJECT_ATTRIBUTES TargetKey
)
/*++
Routine Description:
Drop a subtree (hive) out of the registry.
Will fail if applied to anything other than the root of a hive.
Cannot be applied to core system hives (HARDWARE, SYSTEM, etc.)
Can be applied to user hives loaded via NtRestoreKey or NtLoadKey.
If there are handles open to the hive being dropped, this call
will fail. Terminate relevent processes so that handles are
closed.
This call will flush the hive being dropped.
Caller must have SeRestorePrivilege privilege.
Arguments:
TargetKey - specifies the path to a key to link the hive to.
path must be of the form "\registry\user\<username>"
Return Value:
NTSTATUS - values TBS.
--*/
{
return NtUnloadKey(
TargetKey
);
}
NTSTATUS
Wow64NtSetInformationKey(
IN HANDLE KeyHandle,
IN KEY_SET_INFORMATION_CLASS KeySetInformationClass,
IN PVOID KeySetInformation,
IN ULONG KeySetInformationLength
)
{
return NtSetInformationKey(
KeyHandle,
KeySetInformationClass,
KeySetInformation,
KeySetInformationLength
);
}
NTSTATUS
Wow64NtReplaceKey(
IN POBJECT_ATTRIBUTES NewFile,
IN HANDLE TargetHandle,
IN POBJECT_ATTRIBUTES OldFile
)
/*++
Routine Description:
A hive file may be "replaced" under a running system, such
that the new file will be the one actually used at next
boot, with this call.
This routine will:
Open newfile, and verify that it is a valid Hive file.
Rename the Hive file backing TargetHandle to OldFile.
All handles will remain open, and the system will continue
to use the file until rebooted.
Rename newfile to match the name of the hive file
backing TargetHandle.
.log and .alt files are ignored
The system must be rebooted for any useful effect to be seen.
Caller must have SeRestorePrivilege.
Arguments:
NewFile - specifies the new file to use. must not be just
a handle, since NtReplaceKey will insist on
opening the file for exclusive access (which it
will hold until the system is rebooted.)
TargetHandle - handle to a registry hive root
OldFile - name of file to apply to current hive, which will
become old hive
Return Value:
NTSTATUS - values TBS.
--*/
{
return NtReplaceKey(
NewFile,
TargetHandle,
OldFile
);
}
NTSTATUS
Wow64NtQueryMultipleValueKey(
IN HANDLE KeyHandle,
IN PKEY_VALUE_ENTRY ValueEntries,
IN ULONG EntryCount,
OUT PVOID ValueBuffer,
IN OUT PULONG BufferLength,
OUT OPTIONAL PULONG RequiredBufferLength
)
/*++
Routine Description:
Multiple values of any key may be queried atomically with
this api.
Arguments:
KeyHandle - Supplies the key to be queried.
ValueNames - Supplies an array of value names to be queried
ValueEntries - Returns an array of KEY_VALUE_ENTRY structures, one for each value.
EntryCount - Supplies the number of entries in the ValueNames and ValueEntries arrays
ValueBuffer - Returns the value data for each value.
BufferLength - Supplies the length of the ValueBuffer array in bytes.
Returns the length of the ValueBuffer array that was filled in.
RequiredBufferLength - if present, Returns the length in bytes of the ValueBuffer
array required to return all the values of this key.
Return Value:
NTSTATUS
--*/
{
return NtQueryMultipleValueKey( KeyHandle,
ValueEntries,
EntryCount,
ValueBuffer,
BufferLength,
RequiredBufferLength
);
}
NTSTATUS
Wow64NtQueryOpenSubKeys(
IN POBJECT_ATTRIBUTES TargetKey,
OUT PULONG HandleCount
)
/*++
Routine Description:
Dumps all the subkeys of the target key that are kept open by some other
process; Returns the number of open subkeys
Arguments:
TargetKey - specifies the path to a key to link the hive to.
path must be of the form "\registry\user\<username>"
Return Value:
NTSTATUS - values TBS.
--*/
{
return NtQueryOpenSubKeys( TargetKey, HandleCount );
}
NTSTATUS
Wow64NtSetSecurityObject (
IN HANDLE Handle,
IN SECURITY_INFORMATION SecurityInformation,
IN PSECURITY_DESCRIPTOR SecurityDescriptor
)
/*++
Routine Description:
This routine is used to invoke an object's security routine. It
is used to set the object's security state.
Arguments:
Handle - Supplies the handle for the object being modified
SecurityInformation - Indicates the type of information we are
interested in setting. e.g., owner, group, dacl, or sacl.
SecurityDescriptor - Supplies the security descriptor for the
object being modified.
Return Value:
An appropriate NTSTATUS value
--*/
{
//
// Check if the handle points to a particular key, then if the API succeed
// Reflect that.
//
NTSTATUS St;
NTSTATUS Status;
POBJECT_TYPE_INFORMATION pTypeInfo;
CHAR Buffer[1024];
pTypeInfo = (POBJECT_TYPE_INFORMATION) Buffer;
Status = NtQueryObject(Handle,
ObjectTypeInformation,
pTypeInfo,
sizeof (Buffer),
NULL
);
St = NtSetSecurityObject (
Handle,
SecurityInformation,
SecurityDescriptor
);
//
// If NT_SUCCESS (St) && the handle point on to a registry Key set the handle for reflection.
//
if (NT_SUCCESS (St) && NT_SUCCESS (Status)){
if ( _wcsnicmp ( pTypeInfo->TypeName.Buffer, L"Key", 3) == 0)
Wow64RegSetKeyDirty (Handle); // Need some clean/sync up on exit
}
return St;
}
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