Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 250 insertions, 0 deletions

diff --git a/Source/WebKit2/PluginProcess/WebProcessConnection.cpp b/Source/WebKit2/PluginProcess/WebProcessConnection.cpp
new file mode 100644
index 000000000..ab63b05bb
--- /dev/null
+++ b/Source/WebKit2/PluginProcess/WebProcessConnection.cpp
@@ -0,0 +1,250 @@
+/*
+ * Copyright (C) 2010 Apple Inc. 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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 "WebProcessConnection.h"
+
+#if ENABLE(PLUGIN_PROCESS)
+
+#include "ArgumentCoders.h"
+#include "NPRemoteObjectMap.h"
+#include "PluginControllerProxy.h"
+#include "PluginCreationParameters.h"
+#include "PluginProcess.h"
+#include "PluginProcessConnectionMessages.h"
+#include "RunLoop.h"
+
+namespace WebKit {
+
+
+class ConnectionStack {
+public:
+    CoreIPC::Connection* current()
+    {
+        return m_connectionStack.last();
+    }
+
+    class CurrentConnectionPusher {
+    public:
+        CurrentConnectionPusher(ConnectionStack& connectionStack, CoreIPC::Connection* connection)
+            : m_connectionStack(connectionStack)
+#if !ASSERT_DISABLED
+            , m_connection(connection)
+#endif
+        {
+            m_connectionStack.m_connectionStack.append(connection);
+        }
+
+        ~CurrentConnectionPusher()
+        {
+            ASSERT(m_connectionStack.current() == m_connection);
+            m_connectionStack.m_connectionStack.removeLast();
+        }
+
+    private:
+        ConnectionStack& m_connectionStack;
+#if !ASSERT_DISABLED
+        CoreIPC::Connection* m_connection;
+#endif
+    };
+
+private:
+    // It's OK for these to be weak pointers because we only push object on the stack
+    // from within didReceiveMessage and didReceiveSyncMessage and the Connection objects are
+    // already ref'd for the duration of those functions.
+    Vector<CoreIPC::Connection*, 4> m_connectionStack;
+};
+
+static ConnectionStack& connectionStack()
+{
+    DEFINE_STATIC_LOCAL(ConnectionStack, connectionStack, ());
+
+    return connectionStack;
+}
+
+PassRefPtr<WebProcessConnection> WebProcessConnection::create(CoreIPC::Connection::Identifier connectionIdentifier)
+{
+    return adoptRef(new WebProcessConnection(connectionIdentifier));
+}
+
+WebProcessConnection::~WebProcessConnection()
+{
+    ASSERT(m_pluginControllers.isEmpty());
+    ASSERT(!m_npRemoteObjectMap);
+    ASSERT(!m_connection);
+}
+    
+WebProcessConnection::WebProcessConnection(CoreIPC::Connection::Identifier connectionIdentifier)
+{
+    m_connection = CoreIPC::Connection::createServerConnection(connectionIdentifier, this, RunLoop::main());
+    m_npRemoteObjectMap = NPRemoteObjectMap::create(m_connection.get());
+
+    m_connection->setOnlySendMessagesAsDispatchWhenWaitingForSyncReplyWhenProcessingSuchAMessage(true);
+    m_connection->open();
+}
+
+void WebProcessConnection::addPluginControllerProxy(PassOwnPtr<PluginControllerProxy> pluginController)
+{
+    uint64_t pluginInstanceID = pluginController->pluginInstanceID();
+
+    ASSERT(!m_pluginControllers.contains(pluginInstanceID));
+    m_pluginControllers.set(pluginInstanceID, pluginController.leakPtr());
+}
+
+void WebProcessConnection::destroyPluginControllerProxy(PluginControllerProxy* pluginController)
+{
+    // This may end up calling removePluginControllerProxy which ends up deleting
+    // the WebProcessConnection object if this was the last object.
+    pluginController->destroy();
+}
+
+void WebProcessConnection::removePluginControllerProxy(PluginControllerProxy* pluginController, Plugin* plugin)
+{
+    {
+        ASSERT(m_pluginControllers.contains(pluginController->pluginInstanceID()));
+
+        OwnPtr<PluginControllerProxy> pluginControllerOwnPtr = adoptPtr(m_pluginControllers.take(pluginController->pluginInstanceID()));
+        ASSERT(pluginControllerOwnPtr == pluginController);
+    }
+
+    // Invalidate all objects related to this plug-in.
+    if (plugin)
+        m_npRemoteObjectMap->pluginDestroyed(plugin);
+
+    if (!m_pluginControllers.isEmpty())
+        return;
+
+    m_npRemoteObjectMap = nullptr;
+
+    // The last plug-in went away, close this connection.
+    m_connection->invalidate();
+    m_connection = nullptr;
+
+    // This will cause us to be deleted.    
+    PluginProcess::shared().removeWebProcessConnection(this);
+}
+
+void WebProcessConnection::setGlobalException(const String& exceptionString)
+{
+    CoreIPC::Connection* connection = connectionStack().current();
+    if (!connection)
+        return;
+
+    connection->sendSync(Messages::PluginProcessConnection::SetException(exceptionString), Messages::PluginProcessConnection::SetException::Reply(), 0);
+}
+
+void WebProcessConnection::didReceiveMessage(CoreIPC::Connection* connection, CoreIPC::MessageID messageID, CoreIPC::ArgumentDecoder* arguments)
+{
+    ConnectionStack::CurrentConnectionPusher currentConnection(connectionStack(), connection);
+
+    if (!arguments->destinationID()) {
+        ASSERT_NOT_REACHED();
+        return;
+    }
+
+    PluginControllerProxy* pluginControllerProxy = m_pluginControllers.get(arguments->destinationID());
+    if (!pluginControllerProxy)
+        return;
+
+    PluginController::PluginDestructionProtector protector(pluginControllerProxy->asPluginController());
+    pluginControllerProxy->didReceivePluginControllerProxyMessage(connection, messageID, arguments);
+}
+
+void WebProcessConnection::didReceiveSyncMessage(CoreIPC::Connection* connection, CoreIPC::MessageID messageID, CoreIPC::ArgumentDecoder* arguments, OwnPtr<CoreIPC::ArgumentEncoder>& reply)
+{
+    ConnectionStack::CurrentConnectionPusher currentConnection(connectionStack(), connection);
+
+    uint64_t destinationID = arguments->destinationID();
+
+    if (!destinationID) {
+        didReceiveSyncWebProcessConnectionMessage(connection, messageID, arguments, reply);
+        return;
+    }
+
+    if (messageID.is<CoreIPC::MessageClassNPObjectMessageReceiver>()) {
+        m_npRemoteObjectMap->didReceiveSyncMessage(connection, messageID, arguments, reply);
+        return;
+    }
+
+    PluginControllerProxy* pluginControllerProxy = m_pluginControllers.get(arguments->destinationID());
+    if (!pluginControllerProxy)
+        return;
+
+    PluginController::PluginDestructionProtector protector(pluginControllerProxy->asPluginController());
+    pluginControllerProxy->didReceiveSyncPluginControllerProxyMessage(connection, messageID, arguments, reply);
+}
+
+void WebProcessConnection::didClose(CoreIPC::Connection*)
+{
+    // The web process crashed. Destroy all the plug-in controllers. Destroying the last plug-in controller
+    // will cause the web process connection itself to be destroyed.
+    Vector<PluginControllerProxy*> pluginControllers;
+    copyValuesToVector(m_pluginControllers, pluginControllers);
+
+    for (size_t i = 0; i < pluginControllers.size(); ++i)
+        destroyPluginControllerProxy(pluginControllers[i]);
+}
+
+void WebProcessConnection::destroyPlugin(uint64_t pluginInstanceID)
+{
+    PluginControllerProxy* pluginControllerProxy = m_pluginControllers.get(pluginInstanceID);
+    ASSERT(pluginControllerProxy);
+
+    destroyPluginControllerProxy(pluginControllerProxy);
+}
+
+void WebProcessConnection::didReceiveInvalidMessage(CoreIPC::Connection*, CoreIPC::MessageID)
+{
+    // FIXME: Implement.
+}
+
+void WebProcessConnection::syncMessageSendTimedOut(CoreIPC::Connection*)
+{
+}
+
+void WebProcessConnection::createPlugin(const PluginCreationParameters& creationParameters, bool& result, uint32_t& remoteLayerClientID)
+{
+    OwnPtr<PluginControllerProxy> pluginControllerProxy = PluginControllerProxy::create(this, creationParameters);
+
+    PluginControllerProxy* pluginControllerProxyPtr = pluginControllerProxy.get();
+
+    // Make sure to add the proxy to the map before initializing it, since the plug-in might call out to the web process from 
+    // its NPP_New function. This will hand over ownership of the proxy to the web process connection.
+    addPluginControllerProxy(pluginControllerProxy.release());
+
+    // Now try to initialize the plug-in.
+    result = pluginControllerProxyPtr->initialize(creationParameters);
+
+    if (!result)
+        return;
+
+#if PLATFORM(MAC)
+    remoteLayerClientID = pluginControllerProxyPtr->remoteLayerClientID();
+#endif
+}
+
+} // namespace WebKit
+
+#endif // ENABLE(PLUGIN_PROCESS)