/*++
Copyright (c) 1994 Microsoft Corporation
Module Name:
i_name.c
Abstract:
This module performs actions related to displaying the name of
the last user to logon at the next logon.
Last Logon Name display is controlled by the value of:
Key: \Hkey_local_machine\Software\Microsoft\
Windows NT\CurrentVersion\Winlogon
Value: [REG_SZ] DontDisplayLastUsername<integer value>
Where the defined "<integer value>"'s are:
0 - Display last username at logon.
1 - Don't display the last username at logon.
All other values are undefined and will default to "0".
Author:
Jim Kelly (JimK) 22-Sep-1994
Revision History:
--*/
#include "Missyp.h"
///////////////////////////////////////////////////////////////////////
// //
// Module-Private Definitions //
// //
///////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////
// //
// Module-wide variables //
// //
///////////////////////////////////////////////////////////////////////
PSECMGR_AREA_DESCRIPTOR
MissypLastNameArea;
PSECMGR_ITEM_DESCRIPTOR
MissypLastNameItem;
WCHAR
MissypLastNameName[SECMGR_MAX_ITEM_NAME_LENGTH],
MissypLastNameDesc[SECMGR_MAX_ITEM_DESC_LENGTH];
///////////////////////////////////////////////////////////////////////
// //
// Module-Private Prototypes //
// //
///////////////////////////////////////////////////////////////////////
VOID
MissypMarkLastNameValueCurrent( VOID );
///////////////////////////////////////////////////////////////////////
// //
// Externally callable functions //
// //
///////////////////////////////////////////////////////////////////////
BOOL
MissypLastNameInitialize(
IN PSECMGR_AREA_DESCRIPTOR Area,
IN PSECMGR_ITEM_DESCRIPTOR Item,
IN ULONG ItemIndex
)
/*++
Routine Description:
This function is used to initialize this module and fill in the passed Item
control block.
Arguments
Area - the security area which this item is part of.
Item - points to the item to initialize.
ItemIndex - The index of the item in the array of items for this area.
Return Values:
TRUE - This item has been successfully initialized. However, the
item value is not yet valid.
FALSE - we ran into trouble initializing.
--*/
{
//
// Save away pointers to the area and our item
//
MissypLastNameArea = Area;
MissypLastNameItem = Item;
//
// Get the name and description strings
//
LoadString( MissyphInstance,
MISSYP_STRING_ITEM_LASTNAME_NAME,
&MissypLastNameName[0],
SECMGR_MAX_ITEM_NAME_LENGTH
);
LoadString( MissyphInstance,
MISSYP_STRING_ITEM_LASTNAME_DESC,
&MissypLastNameDesc[0],
SECMGR_MAX_ITEM_DESC_LENGTH
);
//
// Set the flags as such:
//
// Item view editing IS allowed.
// Area view editing IS allowed.
// The value is NOT complex - may be displayed in spreadsheet mode.
// The value is NOT current (has not be retrieved yet).
//
Item->Flags = (SECMGR_ITEM_FLAG_AREA_VIEW |
SECMGR_ITEM_FLAG_ITEM_VIEW);
//
// Now the rest of the fields.
// Value and RecommendedValue are not yet available.
//
Item->Area = Area;
Item->ItemIndex = ItemIndex;
Item->SecMgrContext = NULL; // Not for our use
Item->SmedlyContext = NULL; // We don't use this.
Item->Name = &MissypLastNameName[0];
Item->Description = &MissypLastNameDesc[0];
Item->Type = SecMgrTypeBool;
return(TRUE);
}
BOOL
MissypInvokeLastName(
IN HWND hwnd,
IN BOOL AllowChanges,
IN PSECMGR_AREA_DESCRIPTOR Area,
IN PSECMGR_ITEM_DESCRIPTOR Item
)
/*++
Routine Description:
This function is used to obtain a view of just the last name item.
Arguments
hwnd - The caller's window. We will put up a child window.
AllowChanges - If TRUE, value changes are allowed. Otherwise,
value changes are not allowed.
Area - Pointer to this Area's descriptor.
Item - Pointer to our item's descriptor. This will be filled in
with current values upon exit of this routine.
Return Values:
TRUE - The dialog was displayed without error.
FALSE - we ran into trouble.
If an error is encountered, then an error popup will be
displayed by this routine.
--*/
{
DialogBoxParam(MissyphInstance,
MAKEINTRESOURCE(MISSYP_ID_DLG_ITEM_LAST_USERNAME),
hwnd,
(DLGPROC)MissypDlgProcLastName,
(LONG)AllowChanges
);
return(TRUE);
}
BOOLEAN
MissypGetLastNameSetting(
IN HWND hwnd,
OUT PBOOL Value
)
/*++
Routine Description:
This function is used to get the current workstation LastName
setting.
This routine also sets the appropriate fields in our Item control
block.
Arguments
hwnd - The caller's window. This is used if we need to put
up an error popup.
Value - Recieves either TRUE (display last username at logon) or
FALSE (don't display last username at logon). Default is FALSE.
NOTE: that this value is opposite what is stored in the registry.
Return Values:
TRUE - The value has been successfully retrieved.
FALSE - we ran into trouble querying the current setting.
If an error is encountered, then an error popup will be
displayed by this routine.
--*/
{
BOOL
DontDisplayLastName;
DontDisplayLastName = (BOOL)GetProfileInt( TEXT("Winlogon"), TEXT("DontDisplayLastUsername"), 0);
if ((DontDisplayLastName) != FALSE && (DontDisplayLastName != TRUE)) {
//
// Unknown value - set it to TRUE
//
DontDisplayLastName = TRUE;
}
//
// Set the value in our item control block
//
MissypLastNameItem->Value.Bool = !DontDisplayLastName;
(*Value) = !DontDisplayLastName;
//
// Mark the value as current (updating our recommendation in the process).
//
MissypMarkLastNameValueCurrent();
return( TRUE );
}
BOOLEAN
MissypSetLastNameSetting(
IN HWND hwnd,
IN BOOL Value
)
/*++
Routine Description:
This function is used to set a new workstation LastName value for the system.
As a side effect, it also sets the value in the Item control block and
resets the "recommended" flag.
Arguments
hwnd - The caller's window. This is used if we need to put
up an error popup.
Value - The value to apply to the system and set in the Item control block.
TRUE => Display last username. FALSE => Don't display.
Return Values:
TRUE - The value has been successfully set
FALSE - we ran into trouble setting the new setting.
If an error is encountered, then an error popup will be
displayed by this routine.
--*/
{
NTSTATUS
NtStatus;
BOOLEAN
Result;
BOOLEAN
DontDisplayLastName;
DontDisplayLastName = !((BOOLEAN)Value);
//
// Set the new value
//
Result = MissypSetProfileInt(
TEXT("Winlogon"),
TEXT("DontDisplayLastUsername"),
(ULONG)DontDisplayLastName
);
if (Result) {
//
// Update our Item Control Block
//
MissypLastNameItem->Value.Bool = Value;
MissypMarkLastNameValueCurrent();
} else {
//
// Put up a pop-up
//
MissypPopUp( hwnd, MISSYP_POP_UP_CANT_SET_LASTNAME, MISSYP_STRING_TITLE_ERROR);
}
return(Result);
}
VOID
MissypUpdateLastNameRecommendation( VOID )
/*++
Routine Description:
This function updates our recommended value field and flag and sets
the LastName value as CURRENT.
Arguments
None.
Return Values:
None.
--*/
{
MissypLastNameItem->RecommendedValue.Bool = MissypGetLastNameRecommendation( SECMGR_LEVEL_CURRENT );
//
// Indicate whether the current value matches the recommended value
//
if (MissypLastNameItem->Value.Bool == MissypLastNameItem->RecommendedValue.Bool) {
MissypLastNameItem->Flags |= SECMGR_ITEM_FLAG_VALUE_RECOMMENDED; //Recommended value
} else {
MissypLastNameItem->Flags &= (~SECMGR_ITEM_FLAG_VALUE_RECOMMENDED); //Not recommended value
//
// We don't match our recommendation.
// If Display is TRUE, then the system is configured weaker than our recommendation.
// Otherwise, the system is configured stronger than our recommendation.
//
if (MissypLastNameItem->Value.Bool == TRUE) {
MissypLastNameItem->Flags &= (~SECMGR_ITEM_FLAG_VALUE_STRONGER);
} else {
MissypLastNameItem->Flags |= SECMGR_ITEM_FLAG_VALUE_STRONGER;
}
}
return;
}
BOOL
MissypGetLastNameRecommendation(
IN ULONG SecurityLevel
)
/*++
Routine Description:
This function returns the recommended "display last name" setting for this
workstation given a specified security level.
Arguments
SecurityLevel - If this value is SECMGR_LEVEL_CURRENT, then the current
security level known to Missy will be used. Otherwise, the provided
security level will be used.
Return Values:
The recommended setting.
--*/
{
ULONG
EffectiveLevel = SecurityLevel;
if (SecurityLevel == SECMGR_LEVEL_CURRENT) {
EffectiveLevel = MissypSecMgrControl->SecurityLevel;
}
//
// Figure out what our recommendation is, set it in the item control block.
//
// WinNt running Standard or lower ==> Display
// Otherwise ==> Don't display
//
if ((MissypProductType == NtProductWinNt) &&
(MissypSecMgrControl->SecurityLevel <= SECMGR_LEVEL_STANDARD) ) {
return(TRUE);
} else {
return(FALSE);
}
}
///////////////////////////////////////////////////////////////////////
// //
// Locally Callable Functions //
// //
///////////////////////////////////////////////////////////////////////
VOID
MissypMarkLastNameValueCurrent( VOID )
/*++
Routine Description:
This function updates our recommended value field and flag and sets
the LastName value as CURRENT.
Arguments
None.
Return Values:
None.
--*/
{
MissypUpdateLastNameRecommendation();
//
// Indicate we have a value
//
MissypLastNameItem->Flags |= SECMGR_ITEM_FLAG_VALUE_CURRENT;
return;
}