Code drop from //branches/cupcake/...@124589

1 files changed, 166 insertions, 0 deletions

diff --git a/WebCore/plugins/PluginPackage.cpp b/WebCore/plugins/PluginPackage.cpp
new file mode 100644
index 0000000..f3c9075
--- /dev/null
+++ b/WebCore/plugins/PluginPackage.cpp
@@ -0,0 +1,166 @@
+/*
+ * 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);
+
+#ifdef ANDROID_PLUGINS
+    // TODO(jripley): Timer<T> is broken. Unload immediately for now.
+    unloadModule(m_module);
+    m_module = 0;
+#else
+    m_freeLibraryTimer.startOneShot(0);
+#endif
+}
+
+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);
+
+#if defined(ANDROID_PLUGINS)
+    // Remove the Java object from PluginList.
+    unregisterPluginObject();
+#endif
+
+    // <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();
+}
+
+}