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windows-nt/Source/XPSP1/NT/base/screg/winreg/client/reglukey.c

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/*++
Copyright (c) 1992 Microsoft Corporation
Module Name:
Reglukey.c
Abstract:
This module contains the client side wrappers for the Win32 Registry
APIs to load, unload and replace keys. That is:
- RegLoadKeyA
- RegLoadKeyW
- RegUnLoadKeyA
- RegUnLoadKeyW
- RegReplaceKeyA
- RegReplaceKeyW
Author:
Ramon J. San Andres (ramonsa) 16-Apr-1992
--*/
#include <rpc.h>
#include "regrpc.h"
#include "client.h"
LONG
APIENTRY
RegLoadKeyA(
HKEY hKey,
LPCSTR lpSubKey,
LPCSTR lpFile
)
/*++
Routine Description:
Win32 Ansi API for loading a key.
--*/
{
HKEY Handle;
UNICODE_STRING SubKey;
UNICODE_STRING File;
WCHAR UnicodeBuffer[ MAX_PATH ];
ANSI_STRING AnsiFile;
NTSTATUS NtStatus;
LONG Error;
HKEY TempHandle = NULL;
#if DBG
// OutputDebugString( "Winreg: Entering RegLoadKeyA\n" );
if ( BreakPointOnEntry ) {
DbgBreakPoint();
}
#endif
//
// Limit the capabilities associated with HKEY_PERFORMANCE_DATA.
//
if( hKey == HKEY_PERFORMANCE_DATA ) {
return ERROR_INVALID_HANDLE;
}
Handle = MapPredefinedHandle( hKey, &TempHandle );
if ( Handle == NULL ) {
Error = ERROR_INVALID_HANDLE;
goto ExitCleanup;
}
//
// Convert the SubKey name to a counted Unicode
//
if( !RtlCreateUnicodeStringFromAsciiz(&SubKey,lpSubKey) ) {
NtStatus = STATUS_NO_MEMORY;
Error = RtlNtStatusToDosError( NtStatus );
goto ExitCleanup;
}
//
// Add the NULL to the length so that RPC will transmit the entire
// thing
//
if ( SubKey.Length > 0 ) {
SubKey.Length += sizeof( UNICODE_NULL );
}
//
// Convert the file name to a counted Unicode string using the
// Unicode string on the stack.
//
File.Buffer = UnicodeBuffer;
File.MaximumLength = sizeof( UnicodeBuffer );
RtlInitAnsiString( &AnsiFile, lpFile );
NtStatus = RtlAnsiStringToUnicodeString(
&File,
&AnsiFile,
FALSE
);
//
// If the file name could not be converted, map the results and return.
//
if( ! NT_SUCCESS( NtStatus )) {
// free the allocated unicode string
RtlFreeUnicodeString( &SubKey );
Error = RtlNtStatusToDosError( NtStatus );
goto ExitCleanup;
}
//
// Add the NULL to the length so that RPC will transmit the entire
// thing
//
if ( File.Length > 0 ) {
File.Length += sizeof( UNICODE_NULL );
}
//
// Call the server
//
if( IsLocalHandle( Handle )) {
Error = (LONG)LocalBaseRegLoadKey(
Handle,
&SubKey,
&File
);
} else {
Error = (LONG)BaseRegLoadKey(
DereferenceRemoteHandle( Handle ),
&SubKey,
&File
);
}
// free the allocated unicode string
RtlFreeUnicodeString( &SubKey );
ExitCleanup:
CLOSE_LOCAL_HANDLE(TempHandle);
return Error;
}
LONG
APIENTRY
RegLoadKeyW(
HKEY hKey,
LPCWSTR lpSubKey,
LPCWSTR lpFile
)
/*++
Routine Description:
Load the tree in the supplied file into the key referenced by the
supplied key handle and sub-key. The loaded tree will overwrite all
of the contents of the supplied sub-key except for its name.
Pictorially, if the file contains:
A
/ \
/ \
B C
and the supplied key refers to a key name X, the resultant tree would
look like:
X
/ \
/ \
B C
Arguments:
hKey - Supplies the predefined handle HKEY_USERS or HKEY_LOCAL_MACHINE.
lpSubKey is relative to this handle.
lpSubKey - Supplies a path name to a new (i.e. non-existant) key
where the supplied file will be loaded.
lpFile - Supplies a pointer to an existing file name whose contents was
created with RegSaveKey. The file name may not have an extension.
Return Value:
Returns ERROR_SUCCESS (0) for success; error-code for failure.
Notes:
The difference between RegRestoreKey and RegLoadKey is that in the
latter case the supplied file is used as the actual backing store
whereas in the former case the information in the file is copied into
the Registry.
RegLoadKey requires SeRestorePrivilege.
--*/
{
HKEY Handle;
UNICODE_STRING SubKey;
UNICODE_STRING File;
LONG Error;
HKEY TempHandle = NULL;
#if DBG
if ( BreakPointOnEntry ) {
DbgBreakPoint();
}
#endif
//
// Limit the capabilities associated with HKEY_PERFORMANCE_DATA.
//
if( hKey == HKEY_PERFORMANCE_DATA ) {
return ERROR_INVALID_HANDLE;
}
Handle = MapPredefinedHandle( hKey, &TempHandle );
if ( Handle == NULL ) {
Error = ERROR_INVALID_HANDLE;
goto ExitCleanup;
}
RtlInitUnicodeString(
&SubKey,
lpSubKey
);
//
// Add the NULL to the length so that RPC will transmit the entire
// thing
//
if ( SubKey.Length > 0 ) {
SubKey.Length += sizeof( UNICODE_NULL );
}
RtlInitUnicodeString(
&File,
lpFile
);
//
// Add the NULL to the length so that RPC will transmit the entire
// thing
//
if ( File.Length > 0 ) {
File.Length += sizeof( UNICODE_NULL );
}
//
// Call the server
//
if( IsLocalHandle( Handle )) {
Error = (LONG)LocalBaseRegLoadKey(
Handle,
&SubKey,
&File
);
} else {
Error = (LONG)BaseRegLoadKey(
DereferenceRemoteHandle( Handle ),
&SubKey,
&File
);
}
ExitCleanup:
CLOSE_LOCAL_HANDLE(TempHandle);
return Error;
}
LONG
APIENTRY
RegUnLoadKeyA(
HKEY hKey,
LPCSTR lpSubKey
)
/*++
Routine Description:
Win32 Ansi API for unloading a key.
--*/
{
HKEY Handle;
UNICODE_STRING SubKey;
NTSTATUS NtStatus;
LONG Error;
HKEY TempHandle = NULL;
#if DBG
if ( BreakPointOnEntry ) {
DbgBreakPoint();
}
#endif
//
// Limit the capabilities associated with HKEY_PERFORMANCE_DATA.
//
if( hKey == HKEY_PERFORMANCE_DATA ) {
return ERROR_INVALID_HANDLE;
}
Handle = MapPredefinedHandle( hKey,&TempHandle );
if ( Handle == NULL ) {
Error = ERROR_INVALID_HANDLE;
goto ExitCleanup;
}
//
// Convert the SubKey name to a counted Unicode
//
if( !RtlCreateUnicodeStringFromAsciiz(&SubKey,lpSubKey) ) {
NtStatus = STATUS_NO_MEMORY;
Error = RtlNtStatusToDosError( NtStatus );
goto ExitCleanup;
}
//
// Add the NULL to the length so that RPC will transmit the entire
// thing
//
if ( SubKey.Length > 0 ) {
SubKey.Length += sizeof( UNICODE_NULL );
}
if( IsLocalHandle( Handle )) {
Error = (LONG)LocalBaseRegUnLoadKey(
Handle,
&SubKey
);
} else {
Error = (LONG)BaseRegUnLoadKey(
DereferenceRemoteHandle( Handle ),
&SubKey
);
}
// free the allocated unicode string
RtlFreeUnicodeString( &SubKey );
ExitCleanup:
CLOSE_LOCAL_HANDLE(TempHandle);
return Error;
}
LONG
APIENTRY
RegUnLoadKeyW(
HKEY hKey,
LPCWSTR lpSubKey
)
/*++
Routine Description:
Unload the specified tree (hive) from the Registry.
Arguments:
hKey - Supplies a handle to an open key. lpSubKey is relative to this
handle.
lpSubKey - Supplies a path name to the key that is to be unloaded.
The combination of hKey and lpSubKey must refer to a hive in the
Registry created with RegRestoreKey or RegLoadKey. This parameter may
be NULL.
Return Value:
Returns ERROR_SUCCESS (0) for success; error-code for failure.
RegUnLoadKey requires SeRestorePrivilege.
--*/
{
HKEY Handle;
UNICODE_STRING SubKey;
LONG Error;
HKEY TempHandle = NULL;
#if DBG
if ( BreakPointOnEntry ) {
DbgBreakPoint();
}
#endif
//
// Limit the capabilities associated with HKEY_PERFORMANCE_DATA.
//
if( hKey == HKEY_PERFORMANCE_DATA ) {
return ERROR_INVALID_HANDLE;
}
Handle = MapPredefinedHandle( hKey, &TempHandle );
if ( Handle == NULL ) {
Error = ERROR_INVALID_HANDLE;
goto ExitCleanup;
}
RtlInitUnicodeString(
&SubKey,
lpSubKey
);
//
// Add the NULL to the length so that RPC will transmit the entire
// thing
//
if ( SubKey.Length > 0 ) {
SubKey.Length += sizeof( UNICODE_NULL );
}
//
// Call the server
//
if( IsLocalHandle( Handle )) {
Error = (LONG)LocalBaseRegUnLoadKey(
Handle,
&SubKey
);
} else {
Error = (LONG)BaseRegUnLoadKey(
DereferenceRemoteHandle( Handle ),
&SubKey
);
}
ExitCleanup:
CLOSE_LOCAL_HANDLE(TempHandle);
return Error;
}
LONG
APIENTRY
RegReplaceKeyA(
HKEY hKey,
LPCSTR lpSubKey,
LPCSTR lpNewFile,
LPCSTR lpOldFile
)
/*++
Routine Description:
Win32 Ansi API for replacing a key.
--*/
{
HKEY Handle;
UNICODE_STRING SubKey;
UNICODE_STRING NewFile;
UNICODE_STRING OldFile;
WCHAR NewUnicodeBuffer[ MAX_PATH ];
WCHAR OldUnicodeBuffer[ MAX_PATH ];
ANSI_STRING AnsiFile;
NTSTATUS NtStatus;
LONG Error;
HKEY TempHandle = NULL;
#if DBG
if ( BreakPointOnEntry ) {
DbgBreakPoint();
}
#endif
//
// Limit the capabilities associated with HKEY_PERFORMANCE_DATA.
//
if( hKey == HKEY_PERFORMANCE_DATA ) {
return ERROR_INVALID_HANDLE;
}
Handle = MapPredefinedHandle( hKey, &TempHandle );
if ( Handle == NULL ) {
Error = ERROR_INVALID_HANDLE;
goto ExitCleanup;
}
//
// Convert the SubKey name to a counted Unicode
//
if( !RtlCreateUnicodeStringFromAsciiz(&SubKey,lpSubKey) ) {
NtStatus = STATUS_NO_MEMORY;
Error = RtlNtStatusToDosError( NtStatus );
goto ExitCleanup;
}
//
// Convert the new file name to a counted Unicode string using the
// Unicode string on the stack.
//
NewFile.Buffer = NewUnicodeBuffer;
NewFile.MaximumLength = sizeof( NewUnicodeBuffer );
RtlInitAnsiString( &AnsiFile, lpNewFile );
NtStatus = RtlAnsiStringToUnicodeString(
&NewFile,
&AnsiFile,
FALSE
);
//
// If the file name could not be converted, map the results and return.
//
if( ! NT_SUCCESS( NtStatus )) {
// free the allocated unicode string
RtlFreeUnicodeString( &SubKey );
Error = RtlNtStatusToDosError( NtStatus );
goto ExitCleanup;
}
//
// Convert the old file name to a counted Unicode string using the
// Unicode string on the stack.
//
OldFile.Buffer = OldUnicodeBuffer;
OldFile.MaximumLength = sizeof( OldUnicodeBuffer );
RtlInitAnsiString( &AnsiFile, lpOldFile );
NtStatus = RtlAnsiStringToUnicodeString(
&OldFile,
&AnsiFile,
FALSE
);
//
// If the file name could not be converted, map the results and return.
//
if( ! NT_SUCCESS( NtStatus )) {
// free the allocated unicode string
RtlFreeUnicodeString( &SubKey );
Error = RtlNtStatusToDosError( NtStatus );
goto ExitCleanup;
}
//
// Add the NULL to the length so that RPC will transmit the entire
// thing
//
if ( SubKey.Length > 0 ) {
SubKey.Length += sizeof( UNICODE_NULL );
}
if ( NewFile.Length > 0 ) {
NewFile.Length += sizeof( UNICODE_NULL );
}
if ( OldFile.Length > 0 ) {
OldFile.Length += sizeof( UNICODE_NULL );
}
//
// Call the server
//
if( IsLocalHandle( Handle )) {
Error = (LONG)LocalBaseRegReplaceKey(
Handle,
&SubKey,
&NewFile,
&OldFile
);
} else {
Error = (LONG)BaseRegReplaceKey(
DereferenceRemoteHandle( Handle ),
&SubKey,
&NewFile,
&OldFile
);
}
// free the allocated unicode string
RtlFreeUnicodeString( &SubKey );
ExitCleanup:
CLOSE_LOCAL_HANDLE(TempHandle);
return Error;
}
LONG
APIENTRY
RegReplaceKeyW(
HKEY hKey,
LPCWSTR lpSubKey,
LPCWSTR lpNewFile,
LPCWSTR lpOldFile
)
/*++
Routine Description:
Replace an existing tree (hive) in the Registry. The new tree will
take effect the next time the system is rebooted.
Arguments:
hKey - Supplies a handle to an open key. lpSubKey is relative to this
handle.
lpSubKey - Supplies a path name to the key that is to be replaced.
The combination of hKey and lpSubKey must refer to a hive in the
Registry. This parameter may be NULL.
lpNewFile - Supplies a file name for the new hive file.
lpOldFile - Supplies a backup file name for the old (existing) hive file.
Return Value:
Returns ERROR_SUCCESS (0) for success; error-code for failure.
Notes:
lpNewFile will remain open until after the system is rebooted.
RegUnLoadKey requires SeRestorePrivilege.
--*/
{
HKEY Handle;
UNICODE_STRING SubKey;
UNICODE_STRING NewFile;
UNICODE_STRING OldFile;
LONG Error;
HKEY TempHandle = NULL;
#if DBG
if ( BreakPointOnEntry ) {
DbgBreakPoint();
}
#endif
//
// Limit the capabilities associated with HKEY_PERFORMANCE_DATA.
//
if( hKey == HKEY_PERFORMANCE_DATA ) {
return ERROR_INVALID_HANDLE;
}
Handle = MapPredefinedHandle( hKey, &TempHandle );
if ( Handle == NULL ) {
Error = ERROR_INVALID_HANDLE;
goto ExitCleanup;
}
RtlInitUnicodeString(
&SubKey,
lpSubKey
);
RtlInitUnicodeString(
&NewFile,
lpNewFile
);
RtlInitUnicodeString(
&OldFile,
lpOldFile
);
//
// Add the NULL to the length so that RPC will transmit the entire
// thing
//
if ( SubKey.Length > 0 ) {
SubKey.Length += sizeof( UNICODE_NULL );
}
if ( NewFile.Length > 0 ) {
NewFile.Length += sizeof( UNICODE_NULL );
}
if ( OldFile.Length > 0 ) {
OldFile.Length += sizeof( UNICODE_NULL );
}
//
// Call the server
//
if( IsLocalHandle( Handle )) {
Error = (LONG)LocalBaseRegReplaceKey(
Handle,
&SubKey,
&NewFile,
&OldFile
);
} else {
Error = (LONG)BaseRegReplaceKey(
DereferenceRemoteHandle( Handle ),
&SubKey,
&NewFile,
&OldFile
);
}
ExitCleanup:
CLOSE_LOCAL_HANDLE(TempHandle);
return Error;
}
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