reactos/subsys/system/userinit/userinit.c

   1 /*
   2  *  ReactOS applications
   3  *  Copyright (C) 2001, 2002 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /* $Id$
  20  *
  21  * COPYRIGHT:   See COPYING in the top level directory
  22  * PROJECT:     ReactOS Userinit Logon Application
  23  * FILE:        subsys/system/userinit/userinit.c
  24  * PROGRAMMERS: Thomas Weidenmueller (w3seek@users.sourceforge.net)
  25  */
  26 #include <windows.h>
  27 #include "resource.h"
  28
  29
  30 /* GLOBALS ******************************************************************/
  31
  32 /* FUNCTIONS ****************************************************************/
  33
  34 static
  35 BOOL GetShell(WCHAR *CommandLine)
  36 {
  37   HKEY hKey;
  38   DWORD Type, Size;
  39   WCHAR Shell[MAX_PATH];
  40   BOOL Ret = FALSE;
  41
  42   if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,
  43                   L"SOFTWARE\\ReactOS\\Windows NT\\CurrentVersion\\Winlogon",
  44                   0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
  45   {
  46     Size = MAX_PATH * sizeof(WCHAR);
  47     if(RegQueryValueEx(hKey,
  48                        L"Shell",
  49                        NULL,
  50                        &Type,
  51                        (LPBYTE)Shell,
  52                        &Size) == ERROR_SUCCESS)
  53     {
  54       if((Type == REG_SZ) || (Type == REG_EXPAND_SZ))
  55       {
  56         wcscpy(CommandLine, Shell);
  57         Ret = TRUE;
  58       }
  59     }
  60     RegCloseKey(hKey);
  61   }
  62
  63   if(!Ret)
  64   {
  65     if(GetWindowsDirectory(CommandLine, MAX_PATH - 13))
  66       wcscat(CommandLine, L"\\explorer.exe");
  67     else
  68       wcscpy(CommandLine, L"explorer.exe");
  69   }
  70
  71   return Ret;
  72 }
  73
  74 static
  75 void StartShell(void)
  76 {
  77   STARTUPINFO si;
  78   PROCESS_INFORMATION pi;
  79   WCHAR Shell[MAX_PATH];
  80   WCHAR ExpandedShell[MAX_PATH];
  81   TCHAR szMsg[RC_STRING_MAX_SIZE];
  82
  83   GetShell(Shell);
  84
  85   ZeroMemory(&si, sizeof(STARTUPINFO));
  86   si.cb = sizeof(STARTUPINFO);
  87   ZeroMemory(&pi, sizeof(PROCESS_INFORMATION));
  88
  89   ExpandEnvironmentStrings(Shell, ExpandedShell, MAX_PATH);
  90
  91   if(CreateProcess(NULL,
  92                    ExpandedShell,
  93                    NULL,
  94                    NULL,
  95                    FALSE,
  96                    NORMAL_PRIORITY_CLASS,
  97                    NULL,
  98                    NULL,
  99                    &si,
 100                    &pi))
 101   {
 102     WaitForSingleObject(pi.hProcess, INFINITE);
 103     CloseHandle(pi.hProcess);
 104     CloseHandle(pi.hThread);
 105   }
 106   else
 107   {
 108    LoadString( GetModuleHandle(NULL), STRING_USERINIT_FAIL, (LPTSTR) szMsg,sizeof(szMsg));
 109    MessageBox(0, szMsg, NULL, 0);
 110   }
 111 }
 112
 113 static
 114 void SetUserSettings(void)
 115 {
 116   HKEY hKey;
 117   DWORD Type, Size;
 118   WCHAR szWallpaper[MAX_PATH + 1];
 119
 120   if(RegOpenKeyEx(HKEY_CURRENT_USER,
 121                   L"Control Panel\\Desktop",
 122                   0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
 123   {
 124     Size = sizeof(szWallpaper);
 125     if(RegQueryValueEx(hKey,
 126                        L"Wallpaper",
 127                        NULL,
 128                        &Type,
 129                        (LPBYTE)szWallpaper,
 130                        &Size) == ERROR_SUCCESS
 131        && Type == REG_SZ)
 132     {
 133       /* Load and change the wallpaper */
 134       SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, szWallpaper, SPIF_SENDCHANGE);
 135     }
 136     else
 137     {
 138       /* remove the wallpaper */
 139       SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, NULL, SPIF_SENDCHANGE);
 140     }
 141     RegCloseKey(hKey);
 142   }
 143 }
 144
 145 int WINAPI
 146 WinMain(HINSTANCE hInst,
 147         HINSTANCE hPrevInstance,
 148         LPSTR lpszCmdLine,
 149         int nCmdShow)
 150 {
 151   SetUserSettings();
 152   StartShell();
 153   return 0;
 154 }
 155
 156 /* EOF */