Muldersoft/LameXP
Muldersoft/LameXP
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Fixed a possible NULL-pointer access in DWMAPI wrapper code when DWM is not available.

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This commit is contained in:
LoRd_MuldeR 2013-11-24 22:40:39 +01:00
parent 3d5b9541ed
commit 0bc1157906
3 changed files with 36 additions and 28 deletions
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1
res/Images.qrc
View File

@ -23,7 +23,6 @@
<file>images/Logo_GNU.png</file>
<file>images/Logo_Software.png</file>
<file>images/Qt.svg</file>
<file>images/Splash.png</file>
<file>images/Sound.png</file>
<file>images/Starting.png</file>
<file>images/Thumb.png</file>

2
src/Config.h
View File

@ -35,7 +35,7 @@
#define VER_LAMEXP_MINOR_LO 9
#define VER_LAMEXP_TYPE Alpha
#define VER_LAMEXP_PATCH 8
#define VER_LAMEXP_BUILD 1470
#define VER_LAMEXP_BUILD 1472
#define VER_LAMEXP_CONFG 1348
///////////////////////////////////////////////////////////////////////////////

49
src/Global_Win32.cpp
View File

@ -173,10 +173,10 @@ g_lamexp_themes_enabled;
static struct
{
bool bInitialized;
QLibrary *dwmapi_dll;
HRESULT (__stdcall *dwmIsCompositionEnabled)(BOOL *bEnabled);
HRESULT (__stdcall *dwmExtendFrameIntoClientArea)(HWND hWnd, const MARGINS* pMarInset);
HRESULT (__stdcall *dwmEnableBlurBehindWindow)(HWND hWnd, const DWM_BLURBEHIND* pBlurBehind);
QLibrary *dwmapi_dll;
QReadWriteLock lock;
}
g_lamexp_dwmapi;
@ -1858,14 +1858,14 @@ bool lamexp_open_media_file(const QString &mediaFilePath)
return false;
}
static bool lamexp_init_dwmapi(void)
static void lamexp_init_dwmapi(void)
{
QReadLocker writeLock(&g_lamexp_dwmapi.lock);
//Not initialized yet?
if(g_lamexp_dwmapi.bInitialized)
{
return (g_lamexp_dwmapi.dwmIsCompositionEnabled != NULL);
return;
}
//Reset function pointers
@ -1893,7 +1893,6 @@ static bool lamexp_init_dwmapi(void)
}
g_lamexp_dwmapi.bInitialized = true;
return (g_lamexp_dwmapi.dwmIsCompositionEnabled != NULL);
}
/*
@ -1907,20 +1906,25 @@ bool lamexp_sheet_of_glass(QWidget *window)
while(!g_lamexp_dwmapi.bInitialized)
{
readLock.unlock();
if(!lamexp_init_dwmapi()) return false;
lamexp_init_dwmapi();
readLock.relock();
}
//Check if composition is enabled
BOOL bEnabled = FALSE;
if(HRESULT hr = g_lamexp_dwmapi.dwmIsCompositionEnabled(&bEnabled))
BOOL bCompositionEnabled = FALSE;
//Required functions available?
if((g_lamexp_dwmapi.dwmIsCompositionEnabled != NULL) && (g_lamexp_dwmapi.dwmExtendFrameIntoClientArea != NULL) && (g_lamexp_dwmapi.dwmEnableBlurBehindWindow != NULL))
{
qWarning("DwmIsCompositionEnabled function has failed! (error %d)", hr);
return false;
//Check if composition is currently enabled
if(HRESULT hr = g_lamexp_dwmapi.dwmIsCompositionEnabled(&bCompositionEnabled))
{
qWarning("DwmIsCompositionEnabled function has failed! (error %d)", hr);
return false;
}
}
//Composition enabled and required functions available?
if((!bEnabled) || (g_lamexp_dwmapi.dwmExtendFrameIntoClientArea == NULL) || (g_lamexp_dwmapi.dwmEnableBlurBehindWindow == NULL))
//All functions available *and* composition enabled?
if(!bCompositionEnabled)
{
return false;
}
@ -1963,20 +1967,25 @@ bool lamexp_sheet_of_glass_update(QWidget *window)
while(!g_lamexp_dwmapi.bInitialized)
{
readLock.unlock();
if(!lamexp_init_dwmapi()) return false;
lamexp_init_dwmapi();
readLock.relock();
}
//Check if composition is enabled
BOOL bEnabled = FALSE;
if(HRESULT hr = g_lamexp_dwmapi.dwmIsCompositionEnabled(&bEnabled))
BOOL bCompositionEnabled = FALSE;
//Required functions available?
if((g_lamexp_dwmapi.dwmIsCompositionEnabled != NULL) && (g_lamexp_dwmapi.dwmEnableBlurBehindWindow != NULL))
{
qWarning("DwmIsCompositionEnabled function has failed! (error %d)", hr);
return false;
//Check if composition is currently enabled
if(HRESULT hr = g_lamexp_dwmapi.dwmIsCompositionEnabled(&bCompositionEnabled))
{
qWarning("DwmIsCompositionEnabled function has failed! (error %d)", hr);
return false;
}
}
//Composition enabled and required functions available?
if((!bEnabled) || (g_lamexp_dwmapi.dwmEnableBlurBehindWindow == NULL))
//All functions available *and* composition enabled?
if(!bCompositionEnabled)
{
return false;
}