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![Tim Clem](/assets/img/avatar_default.png)
libpng is currently loaded on the first attempt to access a PNG icon or cursor. That creates a race condition that can deadlock the loader in certain circumstances if LoadIcon or LoadCursor is called while the loader lock is held, e.g. from a DllMain. Signed-off-by: Tim Clem <tclem@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
480 lines
14 KiB
C
480 lines
14 KiB
C
/*
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* USER initialization code
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*
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* Copyright 2000 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "controls.h"
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#include "user_private.h"
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#include "win.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(graphics);
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#define DESKTOP_ALL_ACCESS 0x01ff
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HMODULE user32_module = 0;
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static CRITICAL_SECTION user_section;
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static CRITICAL_SECTION_DEBUG critsect_debug =
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{
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0, 0, &user_section,
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{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
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0, 0, { (DWORD_PTR)(__FILE__ ": user_section") }
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};
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static CRITICAL_SECTION user_section = { &critsect_debug, -1, 0, 0, 0, 0 };
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static HPALETTE (WINAPI *pfnGDISelectPalette)( HDC hdc, HPALETTE hpal, WORD bkgnd );
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static UINT (WINAPI *pfnGDIRealizePalette)( HDC hdc );
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static HPALETTE hPrimaryPalette;
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static DWORD exiting_thread_id;
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const struct png_funcs *png_funcs = NULL;
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extern void WDML_NotifyThreadDetach(void);
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#ifdef __MINGW32__
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/* work around a Mingw build issue where _wassert causes a duplicate reference to MessageBoxW */
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void __cdecl _wassert( const WCHAR *msg, const WCHAR *file, unsigned line) { abort(); }
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#endif
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/***********************************************************************
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* USER_Lock
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*/
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void USER_Lock(void)
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{
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EnterCriticalSection( &user_section );
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}
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/***********************************************************************
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* USER_Unlock
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*/
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void USER_Unlock(void)
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{
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LeaveCriticalSection( &user_section );
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}
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/***********************************************************************
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* USER_CheckNotLock
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*
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* Make sure that we don't hold the user lock.
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*/
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void USER_CheckNotLock(void)
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{
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if (RtlIsCriticalSectionLockedByThread(&user_section))
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{
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ERR( "BUG: holding USER lock\n" );
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DebugBreak();
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}
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}
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/***********************************************************************
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* UserSelectPalette (Not a Windows API)
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*/
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static HPALETTE WINAPI UserSelectPalette( HDC hDC, HPALETTE hPal, BOOL bForceBackground )
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{
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WORD wBkgPalette = 1;
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if (!bForceBackground && (hPal != GetStockObject(DEFAULT_PALETTE)))
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{
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HWND hwnd = WindowFromDC( hDC );
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if (hwnd)
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{
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HWND hForeground = GetForegroundWindow();
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/* set primary palette if it's related to current active */
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if (hForeground == hwnd || IsChild(hForeground,hwnd))
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{
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wBkgPalette = 0;
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hPrimaryPalette = hPal;
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}
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}
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}
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return pfnGDISelectPalette( hDC, hPal, wBkgPalette);
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}
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/***********************************************************************
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* UserRealizePalette (USER32.@)
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*/
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UINT WINAPI UserRealizePalette( HDC hDC )
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{
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UINT realized = pfnGDIRealizePalette( hDC );
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/* do not send anything if no colors were changed */
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if (realized && GetCurrentObject( hDC, OBJ_PAL ) == hPrimaryPalette)
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{
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/* send palette change notification */
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HWND hWnd = WindowFromDC( hDC );
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if (hWnd) SendMessageTimeoutW( HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0,
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SMTO_ABORTIFHUNG, 2000, NULL );
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}
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return realized;
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}
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/***********************************************************************
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* palette_init
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*
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* Patch the function pointers in GDI for SelectPalette and RealizePalette
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*/
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static void palette_init(void)
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{
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void **ptr;
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HMODULE module = GetModuleHandleA( "gdi32" );
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if (!module)
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{
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ERR( "cannot get GDI32 handle\n" );
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return;
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}
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if ((ptr = (void**)GetProcAddress( module, "pfnSelectPalette" )))
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pfnGDISelectPalette = InterlockedExchangePointer( ptr, UserSelectPalette );
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else ERR( "cannot find pfnSelectPalette in GDI32\n" );
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if ((ptr = (void**)GetProcAddress( module, "pfnRealizePalette" )))
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pfnGDIRealizePalette = InterlockedExchangePointer( ptr, UserRealizePalette );
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else ERR( "cannot find pfnRealizePalette in GDI32\n" );
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}
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/***********************************************************************
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* get_default_desktop
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*
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* Get the name of the desktop to use for this app if not specified explicitly.
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*/
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static const WCHAR *get_default_desktop(void)
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{
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static WCHAR buffer[MAX_PATH + ARRAY_SIZE(L"\\Explorer")];
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WCHAR *p, *appname = buffer;
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const WCHAR *ret = NULL;
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DWORD len;
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HKEY tmpkey, appkey;
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len = (GetModuleFileNameW( 0, buffer, MAX_PATH ));
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if (!len || len >= MAX_PATH) return L"Default";
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if ((p = wcsrchr( appname, '/' ))) appname = p + 1;
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if ((p = wcsrchr( appname, '\\' ))) appname = p + 1;
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p = appname + lstrlenW(appname);
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lstrcpyW( p, L"\\Explorer" );
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/* @@ Wine registry key: HKCU\Software\Wine\AppDefaults\app.exe\Explorer */
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if (!RegOpenKeyW( HKEY_CURRENT_USER, L"Software\\Wine\\AppDefaults", &tmpkey ))
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{
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if (RegOpenKeyW( tmpkey, appname, &appkey )) appkey = 0;
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RegCloseKey( tmpkey );
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if (appkey)
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{
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len = sizeof(buffer);
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if (!RegQueryValueExW( appkey, L"Desktop", 0, NULL, (LPBYTE)buffer, &len )) ret = buffer;
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RegCloseKey( appkey );
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if (ret && *ret) return ret;
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ret = NULL;
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}
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}
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/* @@ Wine registry key: HKCU\Software\Wine\Explorer */
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if (!RegOpenKeyW( HKEY_CURRENT_USER, L"Software\\Wine\\Explorer", &appkey ))
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{
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len = sizeof(buffer);
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if (!RegQueryValueExW( appkey, L"Desktop", 0, NULL, (LPBYTE)buffer, &len )) ret = buffer;
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RegCloseKey( appkey );
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if (ret && *ret) return ret;
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}
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return L"Default";
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}
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/***********************************************************************
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* dpiaware_init
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*
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* Initialize the DPI awareness style.
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*/
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static void dpiaware_init(void)
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{
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WCHAR buffer[256];
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DWORD option;
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if (!LdrQueryImageFileExecutionOptions( &NtCurrentTeb()->Peb->ProcessParameters->ImagePathName,
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L"dpiAwareness", REG_DWORD, &option, sizeof(option), NULL ))
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{
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TRACE( "got option %x\n", option );
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if (option <= 2)
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{
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SetProcessDpiAwarenessContext( (DPI_AWARENESS_CONTEXT)~(ULONG_PTR)option );
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return;
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}
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}
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if (QueryActCtxSettingsW( 0, NULL, L"http://schemas.microsoft.com/SMI/2016/WindowsSettings",
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L"dpiAwareness", buffer, ARRAY_SIZE(buffer), NULL ))
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{
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static const WCHAR * const types[] = { L"unaware", L"system", L"permonitor", L"permonitorv2" };
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WCHAR *p, *start, *end;
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ULONG_PTR i;
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TRACE( "got dpiAwareness=%s\n", debugstr_w(buffer) );
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for (start = buffer; *start; start = end)
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{
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start += wcsspn( start, L" \t\r\n" );
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if (!(end = wcschr( start, ',' ))) end = start + lstrlenW(start);
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else *end++ = 0;
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if ((p = wcspbrk( start, L" \t\r\n" ))) *p = 0;
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for (i = 0; i < ARRAY_SIZE(types); i++)
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{
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if (wcsicmp( start, types[i] )) continue;
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SetProcessDpiAwarenessContext( (DPI_AWARENESS_CONTEXT)~i );
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return;
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}
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}
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}
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else if (QueryActCtxSettingsW( 0, NULL, L"http://schemas.microsoft.com/SMI/2005/WindowsSettings",
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L"dpiAware", buffer, ARRAY_SIZE(buffer), NULL ))
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{
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TRACE( "got dpiAware=%s\n", debugstr_w(buffer) );
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if (!wcsicmp( buffer, L"true" ))
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SetProcessDpiAwarenessContext( DPI_AWARENESS_CONTEXT_SYSTEM_AWARE );
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else if (!wcsicmp( buffer, L"true/pm" ) || !wcsicmp( buffer, L"per monitor" ))
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SetProcessDpiAwarenessContext( DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE );
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else
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SetProcessDpiAwarenessContext( DPI_AWARENESS_CONTEXT_UNAWARE );
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}
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}
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/***********************************************************************
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* winstation_init
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*
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* Connect to the process window station and desktop.
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*/
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static void winstation_init(void)
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{
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STARTUPINFOW info;
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WCHAR *winstation = NULL, *desktop = NULL, *buffer = NULL;
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HANDLE handle;
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GetStartupInfoW( &info );
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if (info.lpDesktop && *info.lpDesktop)
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{
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buffer = HeapAlloc( GetProcessHeap(), 0, (lstrlenW(info.lpDesktop) + 1) * sizeof(WCHAR) );
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lstrcpyW( buffer, info.lpDesktop );
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if ((desktop = wcschr( buffer, '\\' )))
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{
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*desktop++ = 0;
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winstation = buffer;
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}
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else desktop = buffer;
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}
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/* set winstation if explicitly specified, or if we don't have one yet */
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if (buffer || !GetProcessWindowStation())
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{
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handle = CreateWindowStationW( winstation ? winstation : L"WinSta0", 0, WINSTA_ALL_ACCESS, NULL );
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if (handle)
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{
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SetProcessWindowStation( handle );
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/* only WinSta0 is visible */
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if (!winstation || !wcsicmp( winstation, L"WinSta0" ))
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{
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USEROBJECTFLAGS flags;
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flags.fInherit = FALSE;
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flags.fReserved = FALSE;
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flags.dwFlags = WSF_VISIBLE;
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SetUserObjectInformationW( handle, UOI_FLAGS, &flags, sizeof(flags) );
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}
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}
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}
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if (buffer || !GetThreadDesktop( GetCurrentThreadId() ))
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{
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handle = CreateDesktopW( desktop ? desktop : get_default_desktop(),
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NULL, NULL, 0, DESKTOP_ALL_ACCESS, NULL );
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if (handle) SetThreadDesktop( handle );
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}
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HeapFree( GetProcessHeap(), 0, buffer );
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register_desktop_class();
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}
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/***********************************************************************
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* USER initialisation routine
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*/
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static BOOL process_attach(void)
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{
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dpiaware_init();
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winstation_init();
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/* Initialize system colors and metrics */
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SYSPARAMS_Init();
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/* Setup palette function pointers */
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palette_init();
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keyboard_init();
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__wine_init_unix_lib( user32_module, DLL_PROCESS_ATTACH, NULL, &png_funcs );
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return TRUE;
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}
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/**********************************************************************
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* USER_IsExitingThread
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*/
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BOOL USER_IsExitingThread( DWORD tid )
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{
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return (tid == exiting_thread_id);
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}
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/**********************************************************************
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* thread_detach
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*/
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static void thread_detach(void)
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{
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struct user_thread_info *thread_info = get_user_thread_info();
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exiting_thread_id = GetCurrentThreadId();
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WDML_NotifyThreadDetach();
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USER_Driver->pThreadDetach();
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destroy_thread_windows();
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CloseHandle( thread_info->server_queue );
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HeapFree( GetProcessHeap(), 0, thread_info->wmchar_data );
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HeapFree( GetProcessHeap(), 0, thread_info->key_state );
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HeapFree( GetProcessHeap(), 0, thread_info->rawinput );
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exiting_thread_id = 0;
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}
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/***********************************************************************
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* UserClientDllInitialize (USER32.@)
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*
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* USER dll initialisation routine (exported as UserClientDllInitialize for compatibility).
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*/
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BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, LPVOID reserved )
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{
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static HMODULE imm32_module;
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BOOL ret = TRUE;
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switch(reason)
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{
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case DLL_PROCESS_ATTACH:
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user32_module = inst;
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ret = process_attach();
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if(ret)
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imm32_module = LoadLibraryW(L"imm32.dll");
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break;
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case DLL_THREAD_DETACH:
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thread_detach();
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break;
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case DLL_PROCESS_DETACH:
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USER_unload_driver();
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FreeLibrary(imm32_module);
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DeleteCriticalSection(&user_section);
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break;
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}
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return ret;
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}
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/***********************************************************************
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* ExitWindowsEx (USER32.@)
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*/
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BOOL WINAPI ExitWindowsEx( UINT flags, DWORD reason )
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{
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WCHAR app[MAX_PATH];
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WCHAR cmdline[MAX_PATH + 64];
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PROCESS_INFORMATION pi;
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STARTUPINFOW si;
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void *redir;
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GetSystemDirectoryW( app, MAX_PATH - ARRAY_SIZE( L"\\wineboot.exe" ));
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lstrcatW( app, L"\\wineboot.exe" );
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lstrcpyW( cmdline, app );
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if (flags & EWX_FORCE) lstrcatW( cmdline, L" --kill" );
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else
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{
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lstrcatW( cmdline, L" --end-session" );
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if (flags & EWX_FORCEIFHUNG) lstrcatW( cmdline, L" --force" );
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}
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if (!(flags & EWX_REBOOT)) lstrcatW( cmdline, L" --shutdown" );
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memset( &si, 0, sizeof si );
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si.cb = sizeof si;
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Wow64DisableWow64FsRedirection( &redir );
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if (!CreateProcessW( app, cmdline, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &si, &pi ))
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{
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Wow64RevertWow64FsRedirection( redir );
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ERR( "Failed to run %s\n", debugstr_w(cmdline) );
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return FALSE;
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}
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Wow64RevertWow64FsRedirection( redir );
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CloseHandle( pi.hProcess );
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CloseHandle( pi.hThread );
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return TRUE;
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}
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/***********************************************************************
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* LockWorkStation (USER32.@)
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*/
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BOOL WINAPI LockWorkStation(void)
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{
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TRACE(": stub\n");
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SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
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return FALSE;
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}
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/***********************************************************************
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* RegisterServicesProcess (USER32.@)
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*/
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int WINAPI RegisterServicesProcess(DWORD ServicesProcessId)
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{
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FIXME("(0x%x): stub\n", ServicesProcessId);
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return 0;
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}
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/***********************************************************************
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* ShutdownBlockReasonCreate (USER32.@)
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*/
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BOOL WINAPI ShutdownBlockReasonCreate(HWND hwnd, LPCWSTR reason)
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{
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FIXME("(%p, %s): stub\n", hwnd, debugstr_w(reason));
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SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
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return FALSE;
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}
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/***********************************************************************
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* ShutdownBlockReasonDestroy (USER32.@)
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*/
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BOOL WINAPI ShutdownBlockReasonDestroy(HWND hwnd)
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{
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FIXME("(%p): stub\n", hwnd);
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SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
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return FALSE;
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}
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