bool PluginPackage::isPluginBlacklisted()
{
if (name() == "Citrix ICA Client") {
// The Citrix ICA Client plug-in requires a Mozilla-based browser; see <rdar://6418681>.
return true;
}
if (name() == "Silverlight Plug-In") {
// workaround for <rdar://5557379> Crash in Silverlight when opening microsoft.com.
// the latest 1.0 version of Silverlight does not reproduce this crash, so allow it
// and any newer versions
static const PlatformModuleVersion slPluginMinRequired(0x51BE0000, 0x00010000);
if (compareFileVersion(slPluginMinRequired) < 0)
return true;
} else if (equalIgnoringCase(fileName(), "npmozax.dll")) {
// Bug 15217: Mozilla ActiveX control complains about missing xpcom_core.dll
return true;
} else if (equalIgnoringCase(fileName(), "npwpf.dll")) {
// Bug 57119: Microsoft Windows Presentation Foundation (WPF) plug-in complains about missing xpcom.dll
return true;
} else if (name() == "Yahoo Application State Plugin") {
// https://bugs.webkit.org/show_bug.cgi?id=26860
// Bug in Yahoo Application State plug-in earlier than 1.0.0.6 leads to heap corruption.
static const PlatformModuleVersion yahooAppStatePluginMinRequired(0x00000006, 0x00010000);
if (compareFileVersion(yahooAppStatePluginMinRequired) < 0)
return true;
}
return false;
}
void PluginPackage::determineQuirks(const String& mimeType)
{
if (MIMETypeRegistry::isJavaAppletMIMEType(mimeType)) {
// Because a single process cannot create multiple VMs, and we cannot reliably unload a
// Java VM, we cannot unload the Java plugin, or we'll lose reference to our only VM
m_quirks.add(PluginQuirkDontUnloadPlugin);
// Setting the window region to an empty region causes bad scrolling repaint problems
// with the Java plug-in.
m_quirks.add(PluginQuirkDontClipToZeroRectWhenScrolling);
return;
}
if (mimeType == "application/x-shockwave-flash") {
static const PlatformModuleVersion flashTenVersion(0x0a000000);
if (compareFileVersion(flashTenVersion) >= 0) {
// Flash 10.0 b218 doesn't like having a NULL window handle
m_quirks.add(PluginQuirkDontSetNullWindowHandleOnDestroy);
} else {
// Flash 9 and older requests windowless plugins if we return a mozilla user agent
m_quirks.add(PluginQuirkWantsMozillaUserAgent);
}
m_quirks.add(PluginQuirkThrottleInvalidate);
m_quirks.add(PluginQuirkThrottleWMUserPlusOneMessages);
m_quirks.add(PluginQuirkFlashURLNotifyBug);
}
}
void PluginPackage::determineQuirks(const String& mimeType)
{
if (MIMETypeRegistry::isJavaAppletMIMEType(mimeType)) {
// Because a single process cannot create multiple VMs, and we cannot reliably unload a
// Java VM, we cannot unload the Java plugin, or we'll lose reference to our only VM
m_quirks.add(PluginQuirkDontUnloadPlugin);
// Setting the window region to an empty region causes bad scrolling repaint problems
// with the Java plug-in.
m_quirks.add(PluginQuirkDontClipToZeroRectWhenScrolling);
return;
}
if (mimeType == "application/x-shockwave-flash") {
static const PlatformModuleVersion flashTenVersion(0x0a000000);
if (compareFileVersion(flashTenVersion) >= 0) {
// Flash 10.0 b218 doesn't like having a NULL window handle
m_quirks.add(PluginQuirkDontSetNullWindowHandleOnDestroy);
#if PLATFORM(QT)
m_quirks.add(PluginQuirkRequiresGtkToolKit);
#endif
} else {
// Flash 9 and older requests windowless plugins if we return a mozilla user agent
m_quirks.add(PluginQuirkWantsMozillaUserAgent);
}
#if PLATFORM(QT)
// Flash will crash on repeated calls to SetWindow in windowed mode
m_quirks.add(PluginQuirkDontCallSetWindowMoreThanOnce);
#if CPU(X86_64)
// 64-bit Flash freezes if right-click is sent in windowless mode
m_quirks.add(PluginQuirkIgnoreRightClickInWindowlessMode);
#endif
#endif
m_quirks.add(PluginQuirkRequiresDefaultScreenDepth);
m_quirks.add(PluginQuirkThrottleInvalidate);
m_quirks.add(PluginQuirkThrottleWMUserPlusOneMessages);
m_quirks.add(PluginQuirkFlashURLNotifyBug);
}
#if defined(Q_WS_MAEMO_5) || defined(Q_WS_MAEMO_6)
// Passing a 32-bit depth pixmap to NPAPI plugins is too inefficient. Instead, pass a X Pixmap
// that has same depth as the screen depth since graphics operations are optimized
// for this depth.
m_quirks.add(PluginQuirkRequiresDefaultScreenDepth);
#endif
}
bool PluginPackage::isPluginBlacklisted()
{
if (name() == "Silverlight Plug-In") {
// workaround for <rdar://5557379> Crash in Silverlight when opening microsoft.com.
// the latest 1.0 version of Silverlight does not reproduce this crash, so allow it
// and any newer versions
static const PlatformModuleVersion slPluginMinRequired(0x51BE0000, 0x00010000);
if (compareFileVersion(slPluginMinRequired) < 0)
return true;
} else if (fileName() == "npmozax.dll")
// Bug 15217: Mozilla ActiveX control complains about missing xpcom_core.dll
return true;
return false;
}
int PluginPackage::compare(const PluginPackage& compareTo) const
{
// Sort plug-ins that allow multiple instances first.
bool AallowsMultipleInstances = !quirks().contains(PluginQuirkDontAllowMultipleInstances);
bool BallowsMultipleInstances = !compareTo.quirks().contains(PluginQuirkDontAllowMultipleInstances);
if (AallowsMultipleInstances != BallowsMultipleInstances)
return AallowsMultipleInstances ? -1 : 1;
// Sort plug-ins in a preferred path first.
bool AisInPreferredDirectory = PluginDatabase::isPreferredPluginDirectory(parentDirectory());
bool BisInPreferredDirectory = PluginDatabase::isPreferredPluginDirectory(compareTo.parentDirectory());
if (AisInPreferredDirectory != BisInPreferredDirectory)
return AisInPreferredDirectory ? -1 : 1;
int diff = strcmp(name().utf8().data(), compareTo.name().utf8().data());
if (diff)
return diff;
if (diff = compareFileVersion(compareTo.version()))
return diff;
return strcmp(parentDirectory().utf8().data(), compareTo.parentDirectory().utf8().data());
}
void PluginPackage::determineQuirks(const String& mimeType)
{
if (mimeType == "application/x-shockwave-flash") {
static const PlatformModuleVersion flashTenVersion(0x00000000, 0x000a0000);
// Pre 10 Flash only requests windowless plugins if we return a mozilla user agent
if (compareFileVersion(flashTenVersion) < 0)
m_quirks.add(PluginQuirkWantsMozillaUserAgent);
m_quirks.add(PluginQuirkThrottleInvalidate);
m_quirks.add(PluginQuirkThrottleWMUserPlusOneMessages);
m_quirks.add(PluginQuirkFlashURLNotifyBug);
}
if (name().contains("Microsoft") && name().contains("Windows Media")) {
// The WMP plugin sets its size on the first NPP_SetWindow call and never updates its size, so
// call SetWindow when the plugin view has a correct size
m_quirks.add(PluginQuirkDeferFirstSetWindowCall);
// Windowless mode does not work at all with the WMP plugin so just remove that parameter
// and don't pass it to the plug-in.
m_quirks.add(PluginQuirkRemoveWindowlessVideoParam);
// WMP has a modal message loop that it enters whenever we call it or
// ask it to paint. This modal loop can deliver messages to other
// windows in WebKit at times when they are not expecting them (for
// example, delivering a WM_PAINT message during a layout), and these
// can cause crashes.
m_quirks.add(PluginQuirkHasModalMessageLoop);
}
if (name() == "VLC Multimedia Plugin") {
// VLC hangs on NPP_Destroy if we call NPP_SetWindow with a null window handle
m_quirks.add(PluginQuirkDontSetNullWindowHandleOnDestroy);
// VLC 0.8.6d and 0.8.6e crash if multiple instances are created.
// <rdar://problem/5773070> tracks allowing multiple instances when this
// bug is fixed.
m_quirks.add(PluginQuirkDontAllowMultipleInstances);
}
// The DivX plugin sets its size on the first NPP_SetWindow call and never updates its size, so
// call SetWindow when the plugin view has a correct size
if (mimeType == "video/divx")
m_quirks.add(PluginQuirkDeferFirstSetWindowCall);
// FIXME: This is a workaround for a problem in our NPRuntime bindings; if a plug-in creates an
// NPObject and passes it to a function it's not possible to see what root object that NPObject belongs to.
// Thus, we don't know that the object should be invalidated when the plug-in instance goes away.
// See <rdar://problem/5487742>.
if (mimeType == "application/x-silverlight")
m_quirks.add(PluginQuirkDontUnloadPlugin);
if (MIMETypeRegistry::isJavaAppletMIMEType(mimeType)) {
// Because a single process cannot create multiple VMs, and we cannot reliably unload a
// Java VM, we cannot unload the Java plugin, or we'll lose reference to our only VM
m_quirks.add(PluginQuirkDontUnloadPlugin);
// Setting the window region to an empty region causes bad scrolling repaint problems
// with the Java plug-in.
m_quirks.add(PluginQuirkDontClipToZeroRectWhenScrolling);
}
if (mimeType == "audio/x-pn-realaudio-plugin") {
// Prevent the Real plugin from calling the Window Proc recursively, causing the stack to overflow.
m_quirks.add(PluginQuirkDontCallWndProcForSameMessageRecursively);
static const PlatformModuleVersion lastKnownUnloadableRealPlayerVersion(0x000B0B24, 0x00060000);
// Unloading RealPlayer versions newer than 10.5 can cause a hang; see rdar://5669317.
// FIXME: Resume unloading when this bug in the RealPlayer Plug-In is fixed (rdar://5713147)
if (compareFileVersion(lastKnownUnloadableRealPlayerVersion) > 0)
m_quirks.add(PluginQuirkDontUnloadPlugin);
}
}
