autosrc.zip_sysinternals

//====================================================================== // // Autoreset.c // // Copyright (C) 1996 Mark Russinovich // // This is a simple dialog applet that just manages the automatic // logon entries in the registry. // //====================================================================== #include <windows.h> #include "resource.h" // registry key names TCHAR LoginKeyName[] = "SOFTWARE\\Microsoft\\Windows NT\\" "CurrentVersion\\Winlogon"; TCHAR AutoLogin[] = "AutoAdminLogon"; TCHAR DefaultUserName[] = "DefaultUserName"; TCHAR DefaultDomain[] = "DefaultDomainName"; TCHAR DefaultPassword[] = "DefaultPassword"; // application instance HINSTANCE hInst; //---------------------------------------------------------------------- // // Abort // // If there is a fatal problem, pop up a message box and die. Assumes // that it is called from the dialog box. // //---------------------------------------------------------------------- void Abort( HWND hWnd, char * Msg ) { MessageBox( hWnd, Msg, "Autologon", MB_ICONERROR|MB_OK ); if( hWnd ) EndDialog( hWnd, 1 ); PostQuitMessage( 1 ); } //---------------------------------------------------------------------- // // About // // Pop about dialog. // //---------------------------------------------------------------------- BOOL APIENTRY About( HWND hDlg, UINT message, UINT wParam, LONG lParam ) { switch ( message ) { case WM_INITDIALOG: return TRUE; case WM_COMMAND: if ( LOWORD( wParam ) == IDOK ) { EndDialog( hDlg, TRUE ); return TRUE; } break; case WM_CLOSE: EndDialog (hDlg, 0); break; } return FALSE; } //---------------------------------------------------------------------- // // CenterWindow // // Centers the Window on the screen. // //---------------------------------------------------------------------- VOID CenterWindow( HWND hDlg ) { RECT aRt; // center the dialog box GetWindowRect( hDlg, &aRt ); OffsetRect( &aRt, -aRt.left, -aRt.top ); MoveWindow( hDlg, ((GetSystemMetrics( SM_CXSCREEN ) - aRt.right ) / 2 + 4) & ~7, (GetSystemMetrics( SM_CYSCREEN ) - aRt.bottom) / 2, aRt.right, aRt.bottom, 0 ); } //---------------------------------------------------------------------- // // MainDialog // // This is the main window. // //---------------------------------------------------------------------- LONG APIENTRY MainDialog( HWND hDlg, UINT message, UINT wParam, LONG lParam ) { TCHAR UserName[256], Domain[256], Password[256]; HKEY hKey; DWORD valuetype, len; static TCHAR szZero[] = "0"; static TCHAR szOne[] = "1"; switch (message) { case WM_INITDIALOG : // // Init - read the current winlogon values from the registry and // put them in the dialog // CenterWindow( hDlg ); // read the current values and put them in the dialog // reset auto-login key if( RegOpenKey( HKEY_LOCAL_MACHINE, LoginKeyName, &hKey ) != ERROR_SUCCESS) { Abort( NULL, TEXT("Could not open Winlogon registry key")); return TRUE; } // read user name len = 256; if( RegQueryValueEx( hKey, DefaultUserName, NULL, &valuetype, UserName, &len ) != ERROR_SUCCESS ) { UserName[0] = 0; } // read domain len = 256; if( RegQueryValueEx( hKey, DefaultDomain, NULL, &valuetype, Domain, &len ) != ERROR_SUCCESS ) { Domain[0] = 0; } // read password len = 256; if( RegQueryValueEx( hKey, DefaultPassword, NULL, &valuetype, Password, &len ) != ERROR_SUCCESS ) { Password[0] = 0; } // done. close key RegCloseKey( hKey ); // initialize dialog SetDlgItemText( hDlg, IDC_LOGINNAME, UserName ); SetDlgItemText( hDlg, IDC_DOMAINNAME, Domain ); SetDlgItemText( hDlg, IDC_PASSWORD, Password ); break; case WM_COMMAND : switch (LOWORD( wParam )) { case IDOK : // // OK - update the registry with the values present in the dialog // // read the values out of the dialog GetDlgItemText( hDlg, IDC_LOGINNAME, UserName, 256 ); GetDlgItemText( hDlg, IDC_DOMAINNAME, Domain, 256 ); GetDlgItemText( hDlg, IDC_PASSWORD, Password, 256 ); // stick it all in the registry if( RegOpenKey( HKEY_LOCAL_MACHINE, LoginKeyName, &hKey ) != ERROR_SUCCESS) { Abort( NULL, TEXT("Could not open Winlogon registry key")); return TRUE; } // write user name if( RegSetValueEx( hKey, DefaultUserName, 0, REG_SZ, UserName, strlen(UserName)+1 ) != ERROR_SUCCESS ) { Abort( NULL, TEXT("Could not write DefaultUserName")); return TRUE; } // write domain if( RegSetValueEx( hKey, DefaultDomain, 0, REG_SZ, Domain, strlen(Domain)+1 ) != ERROR_SUCCESS ) { Abort( NULL, TEXT("Could not write DefaultDomain")); return TRUE; } // write password if( RegSetValueEx( hKey, DefaultPassword, 0, REG_SZ, Password, strlen(Password)+1 ) != ERROR_SUCCESS ) { Abort( NULL, TEXT("Could not write DefaultPassword")); return TRUE; } // enable auto-logon if( RegSetValueEx( hKey, AutoLogin, 0, REG_SZ, szOne, strlen(szOne)+1 ) != ERROR_SUCCESS ) { RegCloseKey( hKey ); Abort( NULL, TEXT("Could not reset AutoAdminLogon")); return TRUE; } MessageBox( NULL, "Autologon successfully configured.", "AutoLogon", MB_ICONINFORMATION ); EndDialog (hDlg, 0) ; PostQuitMessage (0) ; break; case IDCANCEL: // // Cancel - disable the autologon // // disable auto-login key if( RegOpenKey( HKEY_LOCAL_MACHINE, LoginKeyName, &hKey ) != ERROR_SUCCESS) { Abort( NULL, TEXT("Could not open Winlogon registry key")); return TRUE; } if( RegSetValueEx( hKey, AutoLogin, 0, REG_SZ, szZero, strlen(szZero)+1 ) != ERROR_SUCCESS ) { RegCloseKey( hKey ); Abort( NULL, TEXT("Could not reset AutoAdminLogon")); return TRUE; } // done. close key RegCloseKey( hKey ); MessageBox( NULL, "AutoLogon is disabled.", "Autologon", MB_ICONINFORMATION ); EndDialog (hDlg, 0) ; PostQuitMessage (0) ; break ; case IDABOUT: DialogBox( hInst, TEXT("About"), hDlg, (DLGPROC)About ); break; } break; case WM_CLOSE: EndDialog (hDlg, 0); PostQuitMessage( 0 ); break; } return DefWindowProc ( hDlg, message, wParam, lParam); } //---------------------------------------------------------------------- // // WinMain // // Initialize a dialog window class and pop the autologon dialog. // //---------------------------------------------------------------------- int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow ) { static TCHAR szAppName [] = TEXT("AUTOLOG") ; MSG msg ; HWND hMainDlg; WNDCLASSEX wndclass ; int NTVersion; hInst = hInstance; // get NT version NTVersion = GetVersion(); if( NTVersion >= 0x80000000 ) { Abort( NULL, TEXT("Not running on Windows NT")); return TRUE; } // create the main window class wndclass.cbSize = sizeof( WNDCLASSEX ); wndclass.style = CS_HREDRAW | CS_VREDRAW ; wndclass.lpfnWndProc = (WNDPROC) MainDialog ; wndclass.cbClsExtra = 0 ; wndclass.cbWndExtra = DLGWINDOWEXTRA ; wndclass.hInstance = hInstance ; wndclass.hIcon = LoadIcon (hInstance, "APPICON") ; wndclass.hIconSm = LoadIcon (hInstance, "APPICON"); wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ; wndclass.hbrBackground = (HBRUSH) (COLOR_BTNFACE+1); wndclass.lpszMenuName = NULL ; wndclass.lpszClassName = szAppName ; RegisterClassEx (&wndclass) ; // create the dialog hMainDlg = CreateDialog( hInstance, "AUTOLOG", NULL, (DLGPROC)MainDialog)