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/*
* Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2008 Collabora Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "PluginPackage.h"
#include "CString.h"
#include "MIMETypeRegistry.h"
#include "PluginDatabase.h"
#include "PluginDebug.h"
#include "Timer.h"
#include "npruntime_impl.h"
#include <string.h>
#include <wtf/OwnArrayPtr.h>
namespace WebCore {
PluginPackage::~PluginPackage()
{
// This destructor gets called during refresh() if PluginDatabase's
// PluginSet hash is already populated, as it removes items from
// the hash table. Calling the destructor on a loaded plug-in of
// course would cause a crash, so we check to call unload before we
// ASSERT.
// FIXME: There is probably a better way to fix this.
if (m_loadCount == 0)
unloadWithoutShutdown();
else
unload();
ASSERT(!m_isLoaded);
}
void PluginPackage::freeLibrarySoon()
{
ASSERT(!m_freeLibraryTimer.isActive());
ASSERT(m_module);
ASSERT(m_loadCount == 0);
m_freeLibraryTimer.startOneShot(0);
}
void PluginPackage::freeLibraryTimerFired(Timer<PluginPackage>*)
{
ASSERT(m_module);
ASSERT(m_loadCount == 0);
unloadModule(m_module);
m_module = 0;
}
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());
}
PluginPackage::PluginPackage(const String& path, const time_t& lastModified)
: m_isLoaded(false)
, m_loadCount(0)
, m_path(path)
, m_moduleVersion(0)
, m_module(0)
, m_lastModified(lastModified)
, m_freeLibraryTimer(this, &PluginPackage::freeLibraryTimerFired)
{
m_fileName = pathGetFileName(m_path);
m_parentDirectory = m_path.left(m_path.length() - m_fileName.length() - 1);
}
void PluginPackage::unload()
{
if (!m_isLoaded)
return;
if (--m_loadCount > 0)
return;
m_NPP_Shutdown();
unloadWithoutShutdown();
}
void PluginPackage::unloadWithoutShutdown()
{
if (!m_isLoaded)
return;
ASSERT(m_loadCount == 0);
ASSERT(m_module);
// <rdar://5530519>: Crash when closing tab with pdf file (Reader 7 only)
// If the plugin has subclassed its parent window, as with Reader 7, we may have
// gotten here by way of the plugin's internal window proc forwarding a message to our
// original window proc. If we free the plugin library from here, we will jump back
// to code we just freed when we return, so delay calling FreeLibrary at least until
// the next message loop
freeLibrarySoon();
m_isLoaded = false;
}
PassRefPtr<PluginPackage> PluginPackage::createPackage(const String& path, const time_t& lastModified)
{
RefPtr<PluginPackage> package = adoptRef(new PluginPackage(path, lastModified));
if (!package->fetchInfo())
return 0;
return package.release();
}
}
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