419 lines
11 KiB
C
419 lines
11 KiB
C
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/*++
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Copyright (c) 1994 Microsoft Corporation
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Module Name:
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lastuser.C
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Abstract:
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functions used to set the last username display function
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on the current system.
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Author:
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Bob Watson (a-robw)
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Revision History:
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23 Dec 94
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--*/
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#include <windows.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <c2dll.h>
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#include <c2inc.h>
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#include <c2utils.h>
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#include "c2funcs.h"
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#include "c2funres.h"
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// local constants
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// define action codes here. They are only meaningful in the
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// context of this module.
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#define AC_LASTUSER_NOCHANGE 0
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#define AC_LASTUSER_UPDATE 1
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#define SECURE C2DLL_SECURE
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static
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BOOL
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SetLastUserDisplay (
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DWORD dwNewValue
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)
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{
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HKEY hKeyWinlogon = NULL;
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LONG lStatus = ERROR_SUCCESS;
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BOOL bReturn = FALSE;
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UINT nNewData;
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LPCTSTR szNewString;
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SET_WAIT_CURSOR;
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lStatus = RegOpenKeyEx (HKEY_LOCAL_MACHINE,
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GetStringResource (GetDllInstance(), IDS_WINLOGON_KEY),
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0L,
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KEY_SET_VALUE,
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&hKeyWinlogon);
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if (lStatus == ERROR_SUCCESS) {
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// key opened OK so set value
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nNewData = (dwNewValue ? IDS_1 : IDS_0);
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szNewString = GetStringResource (GetDllInstance(), nNewData);
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lStatus = RegSetValueEx (
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hKeyWinlogon,
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GetStringResource (GetDllInstance(), IDS_LAST_USER_VALUE),
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0L,
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REG_SZ,
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(CONST LPBYTE)szNewString,
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(lstrlen (szNewString) + 1) * sizeof(TCHAR));
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if (lStatus == ERROR_SUCCESS) {
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bReturn = TRUE;
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} else {
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bReturn = FALSE;
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}
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RegCloseKey (hKeyWinlogon);
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SetLastError (lStatus);
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} else {
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bReturn = FALSE;
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SetLastError (ERROR_BADKEY);
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}
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SET_ARROW_CURSOR;
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return bReturn;
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}
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static
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BOOL
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GetLastUserDisplay (
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)
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{
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HKEY hKeyWinlogon = NULL;
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LONG lStatus = ERROR_SUCCESS;
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DWORD dwType = 0;
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BOOL bReturn = FALSE;
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TCHAR szValue[MAX_PATH];
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DWORD dwValueSize = MAX_PATH * sizeof(TCHAR);
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SET_WAIT_CURSOR;
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lStatus = RegOpenKeyEx (HKEY_LOCAL_MACHINE,
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GetStringResource (GetDllInstance(), IDS_WINLOGON_KEY),
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0L,
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KEY_READ,
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&hKeyWinlogon);
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if (lStatus == ERROR_SUCCESS) {
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// key opened OK so check value
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lStatus = RegQueryValueEx (
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hKeyWinlogon,
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(LPTSTR)GetStringResource (GetDllInstance(), IDS_LAST_USER_VALUE),
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(LPDWORD)NULL,
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&dwType,
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(LPBYTE)szValue,
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&dwValueSize);
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if (lStatus == ERROR_SUCCESS) {
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// value read successfully so check it out
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if (dwType == REG_SZ) {
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// check value. The "C2" value is "1", any
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// other value is NOT C2
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if (lstrcmp(szValue, GetStringResource(GetDllInstance(), IDS_1)) == 0) {
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bReturn = TRUE;
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} else {
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bReturn = FALSE;
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}
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SetLastError (ERROR_SUCCESS);
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} else {
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// wrong data type returned
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bReturn = FALSE;
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SetLastError (ERROR_CANTREAD);
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}
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} else {
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// no value present
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bReturn = FALSE;
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SetLastError (ERROR_CANTREAD);
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}
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RegCloseKey (hKeyWinlogon);
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} else {
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bReturn = FALSE;
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SetLastError (ERROR_BADKEY);
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}
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SET_ARROW_CURSOR;
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return bReturn;
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}
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BOOL CALLBACK
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C2LastUserDlgProc(
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IN HWND hDlg, // window handle of the dialog box
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IN UINT message, // type of message
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IN WPARAM wParam,
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IN LPARAM lParam
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)
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/*++
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Routine Description:
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Window procedure for Last User Display dialog box
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Arguments:
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Standard DlgProc arguments
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ReturnValue:
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TRUE the message was handled by this routine
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FALSE DefDialogProc should handle the message
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--*/
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{
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static LPDWORD lpdwNewValue;
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DWORD dwLogSetting = 0;
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switch (message) {
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case WM_INITDIALOG:
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// save the pointer to the new value
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lpdwNewValue = (LPDWORD)lParam;
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// get Audit failure settings
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CheckDlgButton (hDlg, IDC_HIDE_LAST_USER,
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(GetLastUserDisplay() ? CHECKED : UNCHECKED));
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SetFocus (GetDlgItem (hDlg, IDOK)); // set focus to OK Button
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return FALSE; // we don't want Windows to set the focus
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case WM_COMMAND:
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switch (LOWORD(wParam)){
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case IDOK:
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if (HIWORD(wParam) == BN_CLICKED) {
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// exit and return button that caused exit
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if (IsDlgButtonChecked (hDlg, IDC_HIDE_LAST_USER) == CHECKED) {
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*lpdwNewValue = TRUE;
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EndDialog (hDlg, (int)LOWORD(wParam));
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} else {
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*lpdwNewValue = FALSE;
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EndDialog (hDlg, (int)LOWORD(wParam));
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}
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return TRUE;
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} else {
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return FALSE;
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}
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case IDCANCEL:
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if (HIWORD(wParam) == BN_CLICKED) {
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// exit and return button that caused exit
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*lpdwNewValue = 0;
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EndDialog (hDlg, (int)LOWORD(wParam));
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return TRUE;
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} else {
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return FALSE;
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}
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case IDC_C2:
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if (HIWORD(wParam) == BN_CLICKED) {
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CheckDlgButton (hDlg, IDC_HIDE_LAST_USER, CHECKED);
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return TRUE;
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} else {
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return FALSE;
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}
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case IDC_HELP:
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PostMessage (GetParent(hDlg), UM_SHOW_CONTEXT_HELP, 0, 0);
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return TRUE;
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default:
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return FALSE;
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}
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default:
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return (FALSE); // Didn't process the message
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}
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}
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LONG
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C2QueryLastUser (
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IN LPARAM lParam
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)
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/*++
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Routine Description:
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Function called to find out if the OS/2 subsystem is installed
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on the system. For C2 compliance, OS/2 must not be
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allowed on the system.
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Arguments:
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Pointer to the Dll data block passed as an LPARAM.
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ReturnValue:
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ERROR_SUCCESS if the function succeeds otherwise a
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WIN32 error is returned if an error occurs
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--*/
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{
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PC2DLL_DATA pC2Data;
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DWORD dwLogSetting = 0;
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UINT nMsgString;
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if (lParam != 0) {
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pC2Data = (PC2DLL_DATA)lParam;
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pC2Data->lC2Compliance = SECURE; // assume true for now
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if (GetLastUserDisplay()) {
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pC2Data->lC2Compliance = SECURE;
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nMsgString = IDS_LAST_USER_HIDDEN;
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} else {
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pC2Data->lC2Compliance = C2DLL_NOT_SECURE;
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nMsgString = IDS_LAST_USER_DISPLAYED;
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}
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lstrcpy (pC2Data->szStatusName,
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GetStringResource (GetDllInstance(), nMsgString));
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} else {
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return ERROR_BAD_ARGUMENTS;
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}
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return ERROR_SUCCESS;
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}
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LONG
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C2SetLastUser (
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IN LPARAM lParam
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)
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/*++
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Routine Description:
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Function called to change the current state of this configuration
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item based on an action code passed in the DLL data block. If
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this function successfully sets the state of the configuration
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item, then the C2 Compliance flag and the Status string to reflect
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the new value of the configuration item.
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Arguments:
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Pointer to the Dll data block passed as an LPARAM.
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ReturnValue:
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ERROR_SUCCESS if the function succeeds otherwise a
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WIN32 error is returned if an error occurs
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--*/
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{
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PC2DLL_DATA pC2Data;
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UINT nMsgString;
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if (lParam != 0) {
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pC2Data = (PC2DLL_DATA)lParam;
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// action valie = the new value of the wrap setting
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if (pC2Data->lActionCode != AC_LASTUSER_NOCHANGE) {
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nMsgString = 0;
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if (pC2Data->lActionCode == AC_LASTUSER_UPDATE) {
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if (pC2Data->lActionValue) {
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if (SetLastUserDisplay (TRUE)) {
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pC2Data->lC2Compliance = SECURE;
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nMsgString = IDS_LAST_USER_HIDDEN;
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} else {
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DisplayDllMessageBox (
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pC2Data->hWnd,
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IDS_LAST_USER_ERROR_NO_SET,
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IDS_LAST_USER_CAPTION,
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MBOK_EXCLAIM);
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}
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} else {
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if (SetLastUserDisplay (FALSE)) {
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pC2Data->lC2Compliance = C2DLL_NOT_SECURE;
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nMsgString = IDS_LAST_USER_DISPLAYED;
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} else {
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DisplayDllMessageBox (
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pC2Data->hWnd,
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IDS_LAST_USER_ERROR_NO_SET,
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IDS_LAST_USER_CAPTION,
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MBOK_EXCLAIM);
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}
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}
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}
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if (nMsgString != 0) {
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// update status string if set was successful
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lstrcpy (pC2Data->szStatusName,
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GetStringResource (GetDllInstance(), nMsgString));
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}
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}
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// update action values
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pC2Data->lActionCode = 0;
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pC2Data->lActionValue = 0;
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} else {
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return ERROR_BAD_ARGUMENTS;
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}
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return ERROR_SUCCESS;
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}
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LONG
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C2DisplayLastUser (
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IN LPARAM lParam
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)
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/*++
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Routine Description:
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Function called to display more information on the configuration
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item and provide the user with the option to change the current
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setting (if appropriate). If the User "OK's" out of the UI,
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then the action code field in the DLL data block is set to the
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appropriate (and configuration item-specific) action code so the
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"Set" function can be called to perform the desired action. If
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the user Cancels out of the UI, then the Action code field is
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set to 0 (no action) and no action is performed.
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Arguments:
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Pointer to the Dll data block passed as an LPARAM.
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ReturnValue:
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ERROR_SUCCESS if the function succeeds otherwise a
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WIN32 error is returned if an error occurs
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--*/
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{
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PC2DLL_DATA pC2Data;
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DWORD dwNewValue;
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if (lParam != 0) {
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pC2Data = (PC2DLL_DATA)lParam;
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if (DialogBoxParam (
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GetDllInstance(),
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MAKEINTRESOURCE (IDD_LAST_USER),
|
|||
|
|
pC2Data->hWnd,
|
|||
|
|
C2LastUserDlgProc,
|
|||
|
|
(LPARAM)&dwNewValue) == IDOK) {
|
|||
|
|
pC2Data->lActionValue = dwNewValue;
|
|||
|
|
pC2Data->lActionCode = AC_LASTUSER_UPDATE;
|
|||
|
|
} else {
|
|||
|
|
// no action
|
|||
|
|
pC2Data->lActionCode = AC_LASTUSER_NOCHANGE;
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
return ERROR_BAD_ARGUMENTS;
|
|||
|
|
}
|
|||
|
|
return ERROR_SUCCESS;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|