Source code of Windows XP (NT5)
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/*************************************************************************
*
* regwd.c
*
* Register APIs for WDs (winstation drivers)
*
* Copyright (c) 1998 Microsoft Corporation
*
*************************************************************************/
/*
* Includes
*/
#include <windows.h>
/* Added By SalimC */
#include <ksguid.h>
/**/
#include <ntddkbd.h>
#include <ntddmou.h>
#include <winstaw.h>
#include <regapi.h>
/*
* External Procedures defined here
*/
LONG WINAPI RegWdEnumerateA( HANDLE, PULONG, PULONG, PWDNAMEA, PULONG );
LONG WINAPI RegWdEnumerateW( HANDLE, PULONG, PULONG, PWDNAMEW, PULONG );
LONG WINAPI RegWdCreateW( HANDLE, PWDNAMEW, BOOLEAN, PWDCONFIG2W, ULONG );
LONG WINAPI RegWdCreateA( HANDLE, PWDNAMEA, BOOLEAN, PWDCONFIG2A, ULONG );
LONG WINAPI RegWdQueryW( HANDLE, PWDNAMEW, PWDCONFIG2W, ULONG, PULONG );
LONG WINAPI RegWdQueryA( HANDLE, PWDNAMEA, PWDCONFIG2A, ULONG, PULONG );
LONG WINAPI RegWdDeleteW( HANDLE, PWDNAMEW );
LONG WINAPI RegWdDeleteA( HANDLE, PWDNAMEA );
/*
* other internal Procedures used (not defined here)
*/
VOID CreateWd( HKEY, PWDCONFIG );
VOID CreateAsync( BOOLEAN, HKEY, PASYNCCONFIG );
VOID CreateUserConfig( HKEY, PUSERCONFIG );
VOID QueryWd( HKEY, PWDCONFIG );
VOID QueryAsync( HKEY, PASYNCCONFIG );
VOID QueryUserConfig( HKEY, PUSERCONFIG );
VOID UnicodeToAnsi( CHAR *, ULONG, WCHAR * );
VOID AnsiToUnicode( WCHAR *, ULONG, CHAR * );
VOID WdConfigU2A( PWDCONFIGA, PWDCONFIGW );
VOID WdConfigA2U( PWDCONFIGW, PWDCONFIGA );
VOID AsyncConfigU2A ( PASYNCCONFIGA, PASYNCCONFIGW );
VOID AsyncConfigA2U ( PASYNCCONFIGW, PASYNCCONFIGA );
VOID UserConfigU2A ( PUSERCONFIGA, PUSERCONFIGW );
VOID UserConfigA2U ( PUSERCONFIGW, PUSERCONFIGA );
/*******************************************************************************
*
* RegWdEnumerateA (ANSI stub)
*
* Returns a list of configured winstation drivers in the registry.
*
* ENTRY:
*
* see RegWdEnumerateW
*
* EXIT:
*
* see RegWdEnumerateW, plus
*
* ERROR_NOT_ENOUGH_MEMORY - the LocalAlloc failed
*
******************************************************************************/
LONG WINAPI
RegWdEnumerateA( HANDLE hServer,
PULONG pIndex,
PULONG pEntries,
PWDNAMEA pWdName,
PULONG pByteCount )
{
PWDNAMEW pBuffer = NULL, pWdNameW;
LONG Status;
ULONG Count, ByteCountW = (*pByteCount << 1);
/*
* If the caller supplied a buffer and the length is not 0,
* allocate a corresponding (*2) buffer for UNICODE strings.
*/
if ( pWdName && ByteCountW ) {
if ( !(pBuffer = LocalAlloc(0, ByteCountW)) )
return ( ERROR_NOT_ENOUGH_MEMORY );
}
/*
* Enumerate winstation drivers
*/
pWdNameW = pBuffer;
Status = RegWdEnumerateW( hServer, pIndex, pEntries, pWdNameW,
&ByteCountW );
/*
* Always /2 the resultant ByteCount (whether sucessful or not).
*/
*pByteCount = (ByteCountW >> 1);
/*
* If the function completed sucessfully and caller
* (and stub) defined a buffer to copy into, perform conversion
* from UNICODE to ANSI. Note: sucessful return may have copied
* 0 items from registry (end of enumeration), denoted by *pEntries
* == 0.
*/
if ( ((Status == ERROR_SUCCESS) || (Status == ERROR_NO_MORE_ITEMS))
&& pWdNameW && pWdName ) {
for ( Count = *pEntries; Count; Count-- ) {
UnicodeToAnsi( pWdName, sizeof(WDNAMEA), pWdNameW );
(char*)pWdName += sizeof(WDNAMEA);
(char*)pWdNameW += sizeof(WDNAMEW);
}
}
/*
* If we defined a buffer, free it now, then return the status
* of the Reg...EnumerateW function call.
*/
if ( pBuffer )
LocalFree(pBuffer);
return ( Status );
}
/*******************************************************************************
*
* RegWdEnumerateW (UNICODE)
*
* Returns a list of configured winstation drivers in the registry.
*
* ENTRY:
*
* hServer (input)
* Handle to WinFrame Server
* pIndex (input/output)
* Specifies the subkey index for the \Citrix\Wds subkeys in the
* registry. Should be set to 0 for the initial call, and supplied
* again (as modified by this function) for multi-call enumeration.
* pEntries (input/output)
* Points to a variable specifying the number of entries requested.
* If the number requested is 0xFFFFFFFF, the function returns as
* many entries as possible. When the function finishes successfully,
* the variable pointed to by the pEntries parameter contains the
* number of entries actually read.
* pWdName (input)
* Points to the buffer to receive the enumeration results, which are
* returned as an array of WDNAMEW structures. If this parameter is
* NULL, then no data will be copied, but just an enumeration count will
* be made.
* pByteCount (input/output)
* Points to a variable that specifies the size, in bytes, of the
* pWdName parameter. If the buffer is too small to receive even
* one entry, the function returns an error code (ERROR_OUTOFMEMORY)
* and this variable receives the required size of the buffer for a
* single subkey. When the function finishes sucessfully, the variable
* pointed to by the pByteCount parameter contains the number of bytes
* actually stored in pWdName.
*
* EXIT:
*
* "No Error" codes:
* ERROR_SUCCESS - The enumeration completed as requested and there
* are more WDS subkeys (WDNAMEs) to be
* read.
* ERROR_NO_MORE_ITEMS - The enumeration completed as requested and there
* are no more WDS subkeys (WDNAMEs) to
* be read.
*
* "Error" codes:
* ERROR_OUTOFMEMORY - The pWdName buffer is too small for even one
* entry.
* ERROR_CANTOPEN - The Citrix\Wds key can't be opened.
*
******************************************************************************/
LONG WINAPI
RegWdEnumerateW( HANDLE hServer,
PULONG pIndex,
PULONG pEntries,
PWDNAMEW pWdName,
PULONG pByteCount )
{
LONG Status;
HKEY Handle;
ULONG Count;
ULONG i;
/*
* Get the number of names to return
*/
Count = pWdName ?
min( *pByteCount / sizeof(WDNAME), *pEntries ) :
(ULONG) -1;
*pEntries = *pByteCount = 0;
/*
* Make sure buffer is big enough for at least one name
*/
if ( Count == 0 ) {
*pByteCount = sizeof(WDNAME);
return( ERROR_OUTOFMEMORY );
}
/*
* Open registry (LOCAL_MACHINE\....\Citrix\Wds)
*/
if ( RegOpenKeyEx( HKEY_LOCAL_MACHINE, WD_REG_NAME, 0,
KEY_ENUMERATE_SUB_KEYS, &Handle ) != ERROR_SUCCESS ) {
return( ERROR_CANTOPEN );
}
/*
* Get list of window stations
*/
for ( i = 0; i < Count; i++ ) {
WDNAME WdName;
if ( (Status = RegEnumKey(Handle, *pIndex, WdName,
sizeof(WDNAME)/sizeof(TCHAR) )) != ERROR_SUCCESS )
break;
/*
* If caller supplied a buffer, then copy the WdName
* and increment the pointer and byte count. Always increment the
* entry count and index for the next iteration.
*/
if ( pWdName ) {
wcscpy( pWdName, WdName );
(char*)pWdName += sizeof(WDNAME);
*pByteCount += sizeof(WDNAME);
}
(*pEntries)++;
(*pIndex)++;
}
/*
* Close registry
*/
RegCloseKey( Handle );
return( Status );
}
/*******************************************************************************
*
* RegWdCreateA (ANSI stub)
*
* Creates a new Wd in the registry or updates an existing entry.
* (See RegWdCreateW)
*
* ENTRY:
* see RegWdCreateW
* EXIT:
* see RegWdCreateW
*
******************************************************************************/
LONG WINAPI
RegWdCreateA( HANDLE hServer,
PWDNAMEA pWdName,
BOOLEAN bCreate,
PWDCONFIG2A pWdConfig,
ULONG WdConfigLength )
{
WDNAMEW WdNameW;
WDCONFIG2W WdConfig2W;
/*
* Validate target buffer size.
*/
if ( WdConfigLength < sizeof(WDCONFIG2A) )
return( ERROR_INSUFFICIENT_BUFFER );
/*
* Convert ANSI WdName to UNICODE.
*/
AnsiToUnicode( WdNameW, sizeof(WDNAMEW), pWdName );
/*
* Copy WDCONFIG2A elements to WDCONFIG2W elements.
*/
WdConfigA2U( &(WdConfig2W.Wd), &(pWdConfig->Wd) );
AsyncConfigA2U( &(WdConfig2W.Async), &(pWdConfig->Async) );
UserConfigA2U( &(WdConfig2W.User), &(pWdConfig->User) );
/*
* Call RegWdCreateW & return it's status.
*/
return ( RegWdCreateW( hServer, WdNameW, bCreate,
&WdConfig2W,
sizeof(WdConfig2W)) );
}
/*******************************************************************************
*
* RegWdCreateW (UNICODE)
*
* Creates a new Wd in the registry or updates an existing entry. The
* state of the bCreate flag determines whether this function will expect
* to create a new Wd entry (bCreate == TRUE) or expects to update an
* existing entry (bCreate == FALSE).
*
* ENTRY:
* hServer (input)
* Handle to WinFrame Server
* pWdName (input)
* Name of a new or exisiting winstation driver in the registry.
* bCreate (input)
* TRUE if this is a creation of a new Wd
* FALSE if this is an update to an existing Wd
* pWdConfig (input)
* Pointer to a WDCONFIG2W structure containing configuration
* information for the specified winstation driver name.
* WdConfigLength (input)
* Specifies the length in bytes of the pWdConfig buffer.
* EXIT:
* ERROR_SUCCESS - no error
*
* ERROR_INSUFFICIENT_BUFFER - pWdConfig buffer too small
* ERROR_FILE_NOT_FOUND - can't open ...\Citrix\Wds key
* ERROR_CANNOT_MAKE - can't create Wd key (registry problem)
* ERROR_ALREADY_EXISTS - create; but Wd key already present
* ERROR_CANTOPEN - update; but Wd key could not be opened
*
******************************************************************************/
LONG WINAPI
RegWdCreateW( HANDLE hServer,
PWDNAMEW pWdName,
BOOLEAN bCreate,
PWDCONFIG2W pWdConfig,
ULONG WdConfigLength )
{
HKEY Handle;
HKEY Handle1;
DWORD Disp;
/*
* Validate length of buffer
*/
if ( WdConfigLength < sizeof(WDCONFIG2) )
return( ERROR_INSUFFICIENT_BUFFER );
/*
* Open registry (LOCAL_MACHINE\....\Citrix\Wds)
*/
if ( RegOpenKeyEx( HKEY_LOCAL_MACHINE, WD_REG_NAME, 0,
KEY_ALL_ACCESS, &Handle1 ) != ERROR_SUCCESS ) {
return( ERROR_FILE_NOT_FOUND );
}
if ( bCreate ) {
/*
* Create requested: create a registry key for the specified
* Wd name.
*/
if ( RegCreateKeyEx( Handle1, pWdName, 0, NULL,
REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS,
NULL, &Handle, &Disp ) != ERROR_SUCCESS ) {
RegCloseKey( Handle1 );
return( ERROR_CANNOT_MAKE );
}
/*
* If an existing key was returned instead of a new one being
* created, return error (don't update).
*/
if ( Disp != REG_CREATED_NEW_KEY ) {
RegCloseKey( Handle1 );
RegCloseKey( Handle );
return( ERROR_ALREADY_EXISTS );
}
} else {
/*
* Update requested: open the registry key for the specified
* Wd name.
*/
if ( RegOpenKeyEx( Handle1, pWdName, 0, KEY_ALL_ACCESS,
&Handle ) != ERROR_SUCCESS ) {
RegCloseKey( Handle1 );
return( ERROR_CANTOPEN );
}
}
RegCloseKey( Handle1 );
/*
* Save WDCONFIG2 Structure
*/
CreateWd( Handle, &pWdConfig->Wd );
CreateAsync( TRUE, Handle, &pWdConfig->Async );
CreateUserConfig( Handle, &pWdConfig->User );
/*
* Close registry handle
*/
RegCloseKey( Handle );
return( ERROR_SUCCESS );
}
/*******************************************************************************
*
* RegWdQueryA (ANSI stub)
*
* Query configuration information of a winstation driver in the registry.
*
* ENTRY:
* see RegWdQueryW
* EXIT:
* see RegWdQueryW
*
******************************************************************************/
LONG WINAPI
RegWdQueryA( HANDLE hServer,
PWDNAMEA pWdName,
PWDCONFIG2A pWdConfig,
ULONG WdConfigLength,
PULONG pReturnLength )
{
WDNAMEW WdNameW;
WDCONFIG2W WdConfig2W;
LONG Status;
ULONG ReturnLengthW;
/*
* Validate length and zero-initialize the destination
* PDCONFIG3A structure.
*/
if ( WdConfigLength < sizeof(WDCONFIG2A) )
return( ERROR_INSUFFICIENT_BUFFER );
memset(pWdConfig, 0, WdConfigLength);
/*
* Convert ANSI WdName to UNICODE.
*/
AnsiToUnicode(WdNameW, sizeof(WDNAMEW), pWdName);
/*
* Query Wd.
*/
if ( (Status = RegWdQueryW( hServer, WdNameW, &WdConfig2W,
sizeof(WDCONFIG2W),
&ReturnLengthW)) != ERROR_SUCCESS )
return ( Status );
/*
* Copy WDCONFIG2W elements to WDCONFIG2A elements.
*/
WdConfigU2A( &(pWdConfig->Wd), &(WdConfig2W.Wd) );
AsyncConfigU2A( &(pWdConfig->Async), &(WdConfig2W.Async) );
UserConfigU2A( &(pWdConfig->User), &(WdConfig2W.User) );
*pReturnLength = sizeof(WDCONFIG2A);
return( ERROR_SUCCESS );
}
/*******************************************************************************
*
* RegWdQueryW (UNICODE)
*
* Query configuration information of a winstation driver in the registry.
*
* ENTRY:
* hServer (input)
* Handle to WinFrame Server
* pWdName (input)
* Name of an exisiting winstation driver in the registry.
* pWdConfig (input)
* Pointer to a WDCONFIG2W structure that will receive
* information about the specified winstation driver name.
* WdConfigLength (input)
* Specifies the length in bytes of the pWdConfig buffer.
* pReturnLength (output)
* Receives the number of bytes placed in the pWdConfig buffer.
* EXIT:
* ERROR_SUCCESS - no error
*
******************************************************************************/
LONG WINAPI
RegWdQueryW( HANDLE hServer,
PWDNAMEW pWdName,
PWDCONFIG2W pWdConfig,
ULONG WdConfigLength,
PULONG pReturnLength )
{
HKEY Handle;
HKEY Handle1;
/*
* Validate length and zero-initialize the destination
* PDCONFIG3A structure.
*/
if ( WdConfigLength < sizeof(WDCONFIG2) )
return( ERROR_INSUFFICIENT_BUFFER );
memset(pWdConfig, 0, WdConfigLength);
/*
* Open registry (LOCAL_MACHINE\....\Citrix\Wds)
*/
if ( RegOpenKeyEx( HKEY_LOCAL_MACHINE, WD_REG_NAME, 0,
KEY_READ, &Handle1 ) != ERROR_SUCCESS ) {
return( ERROR_FILE_NOT_FOUND );
}
/*
* Now try to open the specified Wd
*/
if ( RegOpenKeyEx( Handle1, pWdName, 0,
KEY_READ, &Handle ) != ERROR_SUCCESS ) {
RegCloseKey( Handle1 );
return( ERROR_FILE_NOT_FOUND );
}
RegCloseKey( Handle1 );
/*
* Query WDCONFIG2 Structure
*/
QueryWd( Handle, &pWdConfig->Wd );
QueryAsync( Handle, &pWdConfig->Async );
QueryUserConfig( Handle, &pWdConfig->User );
/*
* Close registry
*/
RegCloseKey( Handle );
*pReturnLength = sizeof(WDCONFIG2);
return( ERROR_SUCCESS );
}
/*******************************************************************************
*
* RegWdDeleteA (ANSI stub)
*
* Deletes a winstation driver from the registry.
*
* ENTRY:
*
* see RegWdDeleteW
*
* EXIT:
*
* see RegWdDeleteW
*
******************************************************************************/
LONG WINAPI
RegWdDeleteA( HANDLE hServer, PWDNAMEA pWdName )
{
WDNAMEW WdNameW;
AnsiToUnicode( WdNameW, sizeof(WdNameW), pWdName);
return ( RegWdDeleteW ( hServer, WdNameW ) );
}
/*******************************************************************************
*
* RegWdDeleteW (UNICODE)
*
* Deletes a winstation driver from the registry.
*
* ENTRY:
* hServer (input)
* Handle to WinFrame Server
* pWdName (input)
* Name of a winstation driver to delete from the registry.
*
* EXIT:
* ERROR_SUCCESS - no error
*
******************************************************************************/
LONG WINAPI
RegWdDeleteW( HANDLE hServer, PWDNAMEW pWdName )
{
LONG Status;
HKEY Handle;
HKEY Handle1;
/*
* Open registry (LOCAL_MACHINE\....\Citrix\Wds)
*/
if ( RegOpenKeyEx( HKEY_LOCAL_MACHINE, WD_REG_NAME, 0,
KEY_READ, &Handle ) != ERROR_SUCCESS ) {
return( ERROR_FILE_NOT_FOUND );
}
/*
* Now try to open the specified Wd
*/
if ( RegOpenKeyEx( Handle, pWdName, 0,
KEY_READ, &Handle1 ) != ERROR_SUCCESS ) {
RegCloseKey( Handle );
return( ERROR_FILE_NOT_FOUND );
}
/*
* Close the Wd key handle, delete the Wd,
* and close the handle to the "Citrix\\Wds" directory.
*/
RegCloseKey( Handle1 );
Status = RegDeleteKey( Handle, pWdName );
RegCloseKey( Handle );
return( Status );
}