Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 394 insertions, 0 deletions

diff --git a/Source/WebCore/plugins/PluginPackage.cpp b/Source/WebCore/plugins/PluginPackage.cpp
new file mode 100644
index 0000000..10149bf
--- /dev/null
+++ b/Source/WebCore/plugins/PluginPackage.cpp
@@ -0,0 +1,394 @@
+/*
+ * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2008 Collabora Ltd.  All rights reserved.
+ * Copyright (C) 2009 Holger Hans Peter Freyther
+ *
+ * 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 "MIMETypeRegistry.h"
+#include "PluginDatabase.h"
+#include "PluginDebug.h"
+#include "Timer.h"
+#include "npruntime_impl.h"
+#include <string.h>
+#include <wtf/OwnArrayPtr.h>
+#include <wtf/text/CString.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)
+        unloadWithoutShutdown();
+    else
+        unload();
+
+    ASSERT(!m_isLoaded);
+}
+
+void PluginPackage::freeLibrarySoon()
+{
+    ASSERT(!m_freeLibraryTimer.isActive());
+    ASSERT(m_module);
+    ASSERT(!m_loadCount);
+
+    m_freeLibraryTimer.startOneShot(0);
+}
+
+void PluginPackage::freeLibraryTimerFired(Timer<PluginPackage>*)
+{
+    ASSERT(m_module);
+    ASSERT(!m_loadCount);
+
+    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;
+
+    diff = compareFileVersion(compareTo.version());
+    if (diff)
+        return diff;
+
+    return strcmp(parentDirectory().utf8().data(), compareTo.parentDirectory().utf8().data());
+}
+
+PluginPackage::PluginPackage(const String& path, const time_t& lastModified)
+    : m_isEnabled(true)
+    , m_isLoaded(false)
+    , m_loadCount(0)
+    , m_path(path)
+    , m_moduleVersion(0)
+    , m_module(0)
+    , m_lastModified(lastModified)
+    , m_freeLibraryTimer(this, &PluginPackage::freeLibraryTimerFired)
+#if ENABLE(NETSCAPE_PLUGIN_METADATA_CACHE)
+    , m_infoIsFromCache(true)
+#endif
+{
+    m_fileName = pathGetFileName(m_path);
+    m_parentDirectory = m_path.left(m_path.length() - m_fileName.length() - 1);
+}
+
+#if !OS(SYMBIAN)
+void PluginPackage::unload()
+{
+    if (!m_isLoaded)
+        return;
+
+    if (--m_loadCount > 0)
+        return;
+
+    m_NPP_Shutdown();
+
+    unloadWithoutShutdown();
+}
+#endif // !OS(SYMBIAN)
+
+void PluginPackage::unloadWithoutShutdown()
+{
+    if (!m_isLoaded)
+        return;
+
+    ASSERT(!m_loadCount);
+    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;
+}
+
+void PluginPackage::setEnabled(bool enabled)
+{
+    m_isEnabled = enabled;
+}
+
+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();
+}
+
+#if ENABLE(NETSCAPE_PLUGIN_METADATA_CACHE)
+PassRefPtr<PluginPackage> PluginPackage::createPackageFromCache(const String& path, const time_t& lastModified, const String& name, const String& description, const String& mimeDescription)
+{
+    RefPtr<PluginPackage> package = adoptRef(new PluginPackage(path, lastModified));
+    package->m_name = name;
+    package->m_description = description;
+    package->determineModuleVersionFromDescription();
+    package->setMIMEDescription(mimeDescription);
+    package->m_infoIsFromCache = true;
+    return package.release();
+}
+#endif
+
+#if defined(XP_UNIX)
+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
+}
+#endif
+
+#if !OS(WINDOWS)
+void PluginPackage::determineModuleVersionFromDescription()
+{
+    // It's a bit lame to detect the plugin version by parsing it
+    // from the plugin description string, but it doesn't seem that
+    // version information is available in any standardized way at
+    // the module level, like in Windows
+
+    if (m_description.isEmpty())
+        return;
+
+    if (m_description.startsWith("Shockwave Flash") && m_description.length() >= 19) {
+        // The flash version as a PlatformModuleVersion differs on Unix from Windows
+        // since the revision can be larger than a 8 bits, so we allow it 16 here and
+        // push the major/minor up 8 bits. Thus on Unix, Flash's version may be
+        // 0x0a000000 instead of 0x000a0000.
+
+        Vector<String> versionParts;
+        m_description.substring(16).split(' ', /*allowEmptyEntries =*/ false, versionParts);
+        if (versionParts.isEmpty())
+            return;
+
+        if (versionParts.size() >= 1) {
+            Vector<String> majorMinorParts;
+            versionParts[0].split('.', majorMinorParts);
+            if (majorMinorParts.size() >= 1) {
+                bool converted = false;
+                unsigned major = majorMinorParts[0].toUInt(&converted);
+                if (converted)
+                    m_moduleVersion = (major & 0xff) << 24;
+            }
+            if (majorMinorParts.size() == 2) {
+                bool converted = false;
+                unsigned minor = majorMinorParts[1].toUInt(&converted);
+                if (converted)
+                    m_moduleVersion |= (minor & 0xff) << 16;
+            }
+        }
+
+        if (versionParts.size() >= 2) {
+            String revision = versionParts[1];
+            if (revision.length() > 1 && (revision[0] == 'r' || revision[0] == 'b')) {
+                revision.remove(0, 1);
+                m_moduleVersion |= revision.toInt() & 0xffff;
+            }
+        }
+    }
+}
+#endif
+
+#if ENABLE(NETSCAPE_PLUGIN_API)
+void PluginPackage::initializeBrowserFuncs()
+{
+    memset(&m_browserFuncs, 0, sizeof(m_browserFuncs));
+    m_browserFuncs.size = sizeof(m_browserFuncs);
+    m_browserFuncs.version = NPVersion();
+
+    m_browserFuncs.geturl = NPN_GetURL;
+    m_browserFuncs.posturl = NPN_PostURL;
+    m_browserFuncs.requestread = NPN_RequestRead;
+    m_browserFuncs.newstream = NPN_NewStream;
+    m_browserFuncs.write = NPN_Write;
+    m_browserFuncs.destroystream = NPN_DestroyStream;
+    m_browserFuncs.status = NPN_Status;
+    m_browserFuncs.uagent = NPN_UserAgent;
+    m_browserFuncs.memalloc = NPN_MemAlloc;
+    m_browserFuncs.memfree = NPN_MemFree;
+    m_browserFuncs.memflush = NPN_MemFlush;
+    m_browserFuncs.reloadplugins = NPN_ReloadPlugins;
+    m_browserFuncs.geturlnotify = NPN_GetURLNotify;
+    m_browserFuncs.posturlnotify = NPN_PostURLNotify;
+    m_browserFuncs.getvalue = NPN_GetValue;
+    m_browserFuncs.setvalue = NPN_SetValue;
+    m_browserFuncs.invalidaterect = NPN_InvalidateRect;
+    m_browserFuncs.invalidateregion = NPN_InvalidateRegion;
+    m_browserFuncs.forceredraw = NPN_ForceRedraw;
+    m_browserFuncs.getJavaEnv = NPN_GetJavaEnv;
+    m_browserFuncs.getJavaPeer = NPN_GetJavaPeer;
+    m_browserFuncs.pushpopupsenabledstate = NPN_PushPopupsEnabledState;
+    m_browserFuncs.poppopupsenabledstate = NPN_PopPopupsEnabledState;
+    m_browserFuncs.pluginthreadasynccall = NPN_PluginThreadAsyncCall;
+
+    m_browserFuncs.releasevariantvalue = _NPN_ReleaseVariantValue;
+    m_browserFuncs.getstringidentifier = _NPN_GetStringIdentifier;
+    m_browserFuncs.getstringidentifiers = _NPN_GetStringIdentifiers;
+    m_browserFuncs.getintidentifier = _NPN_GetIntIdentifier;
+    m_browserFuncs.identifierisstring = _NPN_IdentifierIsString;
+    m_browserFuncs.utf8fromidentifier = _NPN_UTF8FromIdentifier;
+    m_browserFuncs.intfromidentifier = _NPN_IntFromIdentifier;
+    m_browserFuncs.createobject = _NPN_CreateObject;
+    m_browserFuncs.retainobject = _NPN_RetainObject;
+    m_browserFuncs.releaseobject = _NPN_ReleaseObject;
+    m_browserFuncs.invoke = _NPN_Invoke;
+    m_browserFuncs.invokeDefault = _NPN_InvokeDefault;
+    m_browserFuncs.evaluate = _NPN_Evaluate;
+    m_browserFuncs.getproperty = _NPN_GetProperty;
+    m_browserFuncs.setproperty = _NPN_SetProperty;
+    m_browserFuncs.removeproperty = _NPN_RemoveProperty;
+    m_browserFuncs.hasproperty = _NPN_HasProperty;
+    m_browserFuncs.hasmethod = _NPN_HasMethod;
+    m_browserFuncs.setexception = _NPN_SetException;
+    m_browserFuncs.enumerate = _NPN_Enumerate;
+    m_browserFuncs.construct = _NPN_Construct;
+    m_browserFuncs.getvalueforurl = NPN_GetValueForURL;
+    m_browserFuncs.setvalueforurl = NPN_SetValueForURL;
+    m_browserFuncs.getauthenticationinfo = NPN_GetAuthenticationInfo;
+}
+#endif
+
+#if ENABLE(PLUGIN_PACKAGE_SIMPLE_HASH)
+unsigned PluginPackage::hash() const
+{
+    unsigned hashCodes[] = {
+        m_path.impl()->hash(),
+        m_lastModified
+    };
+
+    return WTF::StringHasher::createBlobHash<sizeof(hashCodes)>(hashCodes);
+}
+
+bool PluginPackage::equal(const PluginPackage& a, const PluginPackage& b)
+{
+    return a.m_description == b.m_description;
+}
+#endif
+
+int PluginPackage::compareFileVersion(const PlatformModuleVersion& compareVersion) const
+{
+    // return -1, 0, or 1 if plug-in version is less than, equal to, or greater than
+    // the passed version
+
+#if OS(WINDOWS)
+    if (m_moduleVersion.mostSig != compareVersion.mostSig)
+        return m_moduleVersion.mostSig > compareVersion.mostSig ? 1 : -1;
+    if (m_moduleVersion.leastSig != compareVersion.leastSig)
+        return m_moduleVersion.leastSig > compareVersion.leastSig ? 1 : -1;
+#else    
+    if (m_moduleVersion != compareVersion)
+        return m_moduleVersion > compareVersion ? 1 : -1;
+#endif
+
+    return 0;
+}
+
+#if ENABLE(NETSCAPE_PLUGIN_METADATA_CACHE)
+bool PluginPackage::ensurePluginLoaded()
+{
+    if (!m_infoIsFromCache)
+        return m_isLoaded;
+
+    m_quirks = PluginQuirkSet();
+    m_name = String();
+    m_description = String();
+    m_fullMIMEDescription = String();
+    m_moduleVersion = 0;
+
+    return fetchInfo();
+}
+#endif
+
+}