271 lines
9.0 KiB
C++
271 lines
9.0 KiB
C++
/*
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* Copyright (C) 2010-2018 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "PluginProcess.h"
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#if ENABLE(NETSCAPE_PLUGIN_API)
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#include "ArgumentCoders.h"
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#include "Attachment.h"
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#include "AuxiliaryProcessMessages.h"
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#include "NetscapePlugin.h"
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#include "NetscapePluginModule.h"
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#include "PluginProcessConnectionMessages.h"
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#include "PluginProcessCreationParameters.h"
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#include "PluginProcessProxyMessages.h"
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#include "WebProcessConnection.h"
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#include <WebCore/NetworkStorageSession.h>
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#include <WebCore/NotImplemented.h>
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#include <unistd.h>
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#include <wtf/MemoryPressureHandler.h>
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#include <wtf/NeverDestroyed.h>
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#include <wtf/ProcessPrivilege.h>
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#include <wtf/RunLoop.h>
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#if PLATFORM(MAC)
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#include <crt_externs.h>
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#endif
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namespace WebKit {
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using namespace WebCore;
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NO_RETURN static void callExit(IPC::Connection*)
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{
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_exit(EXIT_SUCCESS);
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}
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PluginProcess& PluginProcess::singleton()
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{
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static NeverDestroyed<PluginProcess> pluginProcess;
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return pluginProcess;
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}
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PluginProcess::PluginProcess()
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: m_supportsAsynchronousPluginInitialization(false)
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, m_minimumLifetimeTimer(RunLoop::main(), this, &PluginProcess::minimumLifetimeTimerFired)
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, m_connectionActivity("PluginProcess connection activity.")
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{
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NetscapePlugin::setSetExceptionFunction(WebProcessConnection::setGlobalException);
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}
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PluginProcess::~PluginProcess()
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{
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}
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void PluginProcess::initializeProcess(const AuxiliaryProcessInitializationParameters& parameters)
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{
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WTF::setProcessPrivileges(allPrivileges());
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WebCore::NetworkStorageSession::permitProcessToUseCookieAPI(true);
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m_pluginPath = parameters.extraInitializationData.get("plugin-path");
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platformInitializeProcess(parameters);
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}
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void PluginProcess::initializeConnection(IPC::Connection* connection)
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{
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AuxiliaryProcess::initializeConnection(connection);
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// We call _exit() directly from the background queue in case the main thread is unresponsive
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// and AuxiliaryProcess::didClose() does not get called.
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connection->setDidCloseOnConnectionWorkQueueCallback(callExit);
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}
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void PluginProcess::removeWebProcessConnection(WebProcessConnection* webProcessConnection)
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{
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size_t vectorIndex = m_webProcessConnections.find(webProcessConnection);
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ASSERT(vectorIndex != notFound);
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m_webProcessConnections.remove(vectorIndex);
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if (m_webProcessConnections.isEmpty() && m_pluginModule) {
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// Decrement the load count. This is balanced by a call to incrementLoadCount in createWebProcessConnection.
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m_pluginModule->decrementLoadCount();
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}
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enableTermination();
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}
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NetscapePluginModule* PluginProcess::netscapePluginModule()
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{
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if (!m_pluginModule) {
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ASSERT(!m_pluginPath.isNull());
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m_pluginModule = NetscapePluginModule::getOrCreate(m_pluginPath);
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#if PLATFORM(MAC)
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if (m_pluginModule) {
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if (m_pluginModule->pluginQuirks().contains(PluginQuirks::PrognameShouldBeWebKitPluginHost))
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*const_cast<const char**>(_NSGetProgname()) = "WebKitPluginHost";
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}
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#endif
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}
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return m_pluginModule.get();
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}
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bool PluginProcess::shouldTerminate()
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{
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return m_webProcessConnections.isEmpty();
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}
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void PluginProcess::didReceiveMessage(IPC::Connection& connection, IPC::Decoder& decoder)
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{
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#if OS(LINUX)
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if (decoder.messageReceiverName() == Messages::AuxiliaryProcess::messageReceiverName()) {
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AuxiliaryProcess::didReceiveMessage(connection, decoder);
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return;
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}
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#endif
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didReceivePluginProcessMessage(connection, decoder);
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}
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void PluginProcess::initializePluginProcess(PluginProcessCreationParameters&& parameters)
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{
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ASSERT(!m_pluginModule);
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auto& memoryPressureHandler = MemoryPressureHandler::singleton();
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memoryPressureHandler.setLowMemoryHandler([this] (Critical, Synchronous) {
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if (shouldTerminate())
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terminate();
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});
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memoryPressureHandler.install();
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m_supportsAsynchronousPluginInitialization = parameters.supportsAsynchronousPluginInitialization;
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setMinimumLifetime(parameters.minimumLifetime);
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setTerminationTimeout(parameters.terminationTimeout);
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platformInitializePluginProcess(WTFMove(parameters));
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}
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void PluginProcess::createWebProcessConnection()
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{
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// FIXME: Merge this with AuxiliaryProcess::createIPCConnectionPair().
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bool didHaveAnyWebProcessConnections = !m_webProcessConnections.isEmpty();
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#if USE(UNIX_DOMAIN_SOCKETS)
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IPC::Connection::SocketPair socketPair = IPC::Connection::createPlatformConnection();
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auto connection = WebProcessConnection::create(socketPair.server);
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m_webProcessConnections.append(WTFMove(connection));
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IPC::Attachment clientSocket(socketPair.client);
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parentProcessConnection()->send(Messages::PluginProcessProxy::DidCreateWebProcessConnection(clientSocket, m_supportsAsynchronousPluginInitialization), 0);
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#elif OS(DARWIN)
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// Create the listening port.
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mach_port_t listeningPort = MACH_PORT_NULL;
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auto kr = mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &listeningPort);
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if (kr != KERN_SUCCESS) {
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LOG_ERROR("Could not allocate mach port, error %x", kr);
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CRASH();
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}
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// Create a listening connection.
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auto connection = WebProcessConnection::create(IPC::Connection::Identifier(listeningPort));
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m_webProcessConnections.append(WTFMove(connection));
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IPC::Attachment clientPort(listeningPort, MACH_MSG_TYPE_MAKE_SEND);
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parentProcessConnection()->send(Messages::PluginProcessProxy::DidCreateWebProcessConnection(clientPort, m_supportsAsynchronousPluginInitialization), 0);
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#else
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notImplemented();
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#endif
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if (NetscapePluginModule* module = netscapePluginModule()) {
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if (!didHaveAnyWebProcessConnections) {
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// Increment the load count. This is matched by a call to decrementLoadCount in removeWebProcessConnection.
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// We do this so that the plug-in module's NP_Shutdown won't be called until right before exiting.
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module->incrementLoadCount();
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}
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}
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disableTermination();
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}
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void PluginProcess::getSitesWithData(uint64_t callbackID)
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{
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Vector<String> sites;
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if (NetscapePluginModule* module = netscapePluginModule())
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sites = module->sitesWithData();
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parentProcessConnection()->send(Messages::PluginProcessProxy::DidGetSitesWithData(sites, callbackID), 0);
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}
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void PluginProcess::deleteWebsiteData(WallTime modifiedSince, uint64_t callbackID)
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{
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if (auto* module = netscapePluginModule()) {
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auto currentTime = WallTime::now();
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if (currentTime > modifiedSince) {
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uint64_t maximumAge = (currentTime - modifiedSince).secondsAs<uint64_t>();
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module->clearSiteData(String(), NP_CLEAR_ALL, maximumAge);
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}
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}
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parentProcessConnection()->send(Messages::PluginProcessProxy::DidDeleteWebsiteData(callbackID), 0);
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}
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void PluginProcess::deleteWebsiteDataForHostNames(const Vector<String>& hostNames, uint64_t callbackID)
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{
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if (auto* module = netscapePluginModule()) {
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for (auto& hostName : hostNames)
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module->clearSiteData(hostName, NP_CLEAR_ALL, std::numeric_limits<uint64_t>::max());
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}
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parentProcessConnection()->send(Messages::PluginProcessProxy::DidDeleteWebsiteDataForHostNames(callbackID), 0);
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}
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void PluginProcess::setMinimumLifetime(Seconds lifetime)
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{
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if (lifetime <= 0_s)
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return;
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disableTermination();
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m_minimumLifetimeTimer.startOneShot(lifetime);
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}
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void PluginProcess::minimumLifetimeTimerFired()
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{
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enableTermination();
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}
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#if !PLATFORM(COCOA)
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void PluginProcess::initializeProcessName(const AuxiliaryProcessInitializationParameters&)
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{
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}
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void PluginProcess::initializeSandbox(const AuxiliaryProcessInitializationParameters&, SandboxInitializationParameters&)
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{
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}
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#endif
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} // namespace WebKit
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#endif // ENABLE(NETSCAPE_PLUGIN_API)
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