Source/WebKit2/WebProcess/cocoa/WebProcessCocoa.mm - WebKit - Git at Google

 /*
  * 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.
  */

 #import "config.h"
 #import "WebProcess.h"

 #import "CustomProtocolManager.h"
 #import "SandboxExtension.h"
 #import "SandboxInitializationParameters.h"
 #import "SecItemShim.h"
 #import "WKFullKeyboardAccessWatcher.h"
 #import "WebFrame.h"
 #import "WebInspector.h"
 #import "WebPage.h"
 #import "WebProcessCreationParameters.h"
 #import "WebProcessProxyMessages.h"
 #import <JavaScriptCore/Options.h>
 #import <WebCore/AXObjectCache.h>
 #import <WebCore/FileSystem.h>
 #import <WebCore/Font.h>
 #import <WebCore/LocalizedStrings.h>
 #import <WebCore/MemoryCache.h>
 #import <WebCore/PageCache.h>
 #import <WebCore/WebCoreNSURLExtras.h>
 #import <WebKitSystemInterface.h>
 #import <algorithm>
 #import <dispatch/dispatch.h>
 #import <mach/host_info.h>
 #import <mach/mach.h>
 #import <mach/mach_error.h>
 #import <objc/runtime.h>
 #import <stdio.h>

 using namespace WebCore;

 namespace WebKit {

 static uint64_t memorySize()
 {
     static host_basic_info_data_t hostInfo;

     static dispatch_once_t once;
     dispatch_once(&once, ^() {
         mach_port_t host = mach_host_self();
         mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
         kern_return_t r = host_info(host, HOST_BASIC_INFO, (host_info_t)&hostInfo, &count);
         mach_port_deallocate(mach_task_self(), host);

         if (r != KERN_SUCCESS)
             LOG_ERROR("%s : host_info(%d) : %s.\n", __FUNCTION__, r, mach_error_string(r));
     });

     return hostInfo.max_mem;
 }

 static uint64_t volumeFreeSize(NSString *path)
 {
     NSDictionary *fileSystemAttributesDictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:path error:NULL];
     return [[fileSystemAttributesDictionary objectForKey:NSFileSystemFreeSize] unsignedLongLongValue];
 }

 void WebProcess::platformSetCacheModel(CacheModel cacheModel)
 {
     RetainPtr<NSString> nsurlCacheDirectory = adoptNS((NSString *)WKCopyFoundationCacheDirectory());
     if (!nsurlCacheDirectory)
         nsurlCacheDirectory = NSHomeDirectory();

     // As a fudge factor, use 1000 instead of 1024, in case the reported byte
     // count doesn't align exactly to a megabyte boundary.
     uint64_t memSize = memorySize() / 1024 / 1000;
     uint64_t diskFreeSize = volumeFreeSize(nsurlCacheDirectory.get()) / 1024 / 1000;

     unsigned cacheTotalCapacity = 0;
     unsigned cacheMinDeadCapacity = 0;
     unsigned cacheMaxDeadCapacity = 0;
     double deadDecodedDataDeletionInterval = 0;
     unsigned pageCacheCapacity = 0;
     unsigned long urlCacheMemoryCapacity = 0;
     unsigned long urlCacheDiskCapacity = 0;

     calculateCacheSizes(cacheModel, memSize, diskFreeSize,
         cacheTotalCapacity, cacheMinDeadCapacity, cacheMaxDeadCapacity, deadDecodedDataDeletionInterval,
         pageCacheCapacity, urlCacheMemoryCapacity, urlCacheDiskCapacity);


     memoryCache()->setCapacities(cacheMinDeadCapacity, cacheMaxDeadCapacity, cacheTotalCapacity);
     memoryCache()->setDeadDecodedDataDeletionInterval(deadDecodedDataDeletionInterval);
     pageCache()->setCapacity(pageCacheCapacity);

     NSURLCache *nsurlCache = [NSURLCache sharedURLCache];

     // FIXME: Once there is no loading being done in the WebProcess, we should remove this,
     // as calling [NSURLCache sharedURLCache] initializes the cache, which we would rather not do.
     if (usesNetworkProcess()) {
         [nsurlCache setMemoryCapacity:0];
         [nsurlCache setDiskCapacity:0];
         return;
     }

     [nsurlCache setMemoryCapacity:urlCacheMemoryCapacity];
     [nsurlCache setDiskCapacity:std::max<unsigned long>(urlCacheDiskCapacity, [nsurlCache diskCapacity])]; // Don't shrink a big disk cache, since that would cause churn.
 }

 void WebProcess::platformClearResourceCaches(ResourceCachesToClear cachesToClear)
 {
     if (cachesToClear == InMemoryResourceCachesOnly)
         return;

     // If we're using the network process then it is the only one that needs to clear the disk cache.
     if (usesNetworkProcess())
         return;

     if (!m_clearResourceCachesDispatchGroup)
         m_clearResourceCachesDispatchGroup = dispatch_group_create();

     dispatch_group_async(m_clearResourceCachesDispatchGroup, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
         [[NSURLCache sharedURLCache] removeAllCachedResponses];
     });
 }

 #if USE(APPKIT)
 static id NSApplicationAccessibilityFocusedUIElement(NSApplication*, SEL)
 {
     WebPage* page = WebProcess::shared().focusedWebPage();
     if (!page || !page->accessibilityRemoteObject())
         return 0;

     return [page->accessibilityRemoteObject() accessibilityFocusedUIElement];
 }
 #endif

 void WebProcess::platformInitializeWebProcess(const WebProcessCreationParameters& parameters, IPC::MessageDecoder&)
 {
 #if ENABLE(WEB_PROCESS_SANDBOX)
     SandboxExtension::consumePermanently(parameters.uiProcessBundleResourcePathExtensionHandle);
     SandboxExtension::consumePermanently(parameters.localStorageDirectoryExtensionHandle);
     SandboxExtension::consumePermanently(parameters.databaseDirectoryExtensionHandle);
     SandboxExtension::consumePermanently(parameters.applicationCacheDirectoryExtensionHandle);
     SandboxExtension::consumePermanently(parameters.diskCacheDirectoryExtensionHandle);
 #endif

     // When the network process is enabled, each web process wants a stand-alone
     // NSURLCache, which it can disable to save memory.
     if (!usesNetworkProcess()) {
         if (!parameters.diskCacheDirectory.isNull()) {
             [NSURLCache setSharedURLCache:adoptNS([[NSURLCache alloc]
                 initWithMemoryCapacity:parameters.nsURLCacheMemoryCapacity
                 diskCapacity:parameters.nsURLCacheDiskCapacity
                 diskPath:parameters.diskCacheDirectory]).get()];
         }
     }

     m_compositingRenderServerPort = parameters.acceleratedCompositingPort.port();
     m_presenterApplicationPid = parameters.presenterApplicationPid;
     m_shouldForceScreenFontSubstitution = parameters.shouldForceScreenFontSubstitution;
     Font::setDefaultTypesettingFeatures(parameters.shouldEnableKerningAndLigaturesByDefault ? Kerning | Ligatures : 0);

     if (!JSC::Options::useJITWasOverridden())
         JSC::Options::useJIT() = parameters.shouldEnableJIT;

     if (!JSC::Options::useFTLJITWasOverridden())
         JSC::Options::useFTLJIT() = parameters.shouldEnableFTL;

     setEnhancedAccessibility(parameters.accessibilityEnhancedUserInterfaceEnabled);

 #if USE(APPKIT)
     // rdar://9118639 accessibilityFocusedUIElement in NSApplication defaults to use the keyWindow. Since there's
     // no window in WK2, NSApplication needs to use the focused page's focused element.
     Method methodToPatch = class_getInstanceMethod([NSApplication class], @selector(accessibilityFocusedUIElement));
     method_setImplementation(methodToPatch, (IMP)NSApplicationAccessibilityFocusedUIElement);
 #endif
 }

 void WebProcess::initializeProcessName(const ChildProcessInitializationParameters& parameters)
 {
 #if !PLATFORM(IOS)
     NSString *applicationName = [NSString stringWithFormat:WEB_UI_STRING("%@ Web Content", "Visible name of the web process. The argument is the application name."), (NSString *)parameters.uiProcessName];
     WKSetVisibleApplicationName((CFStringRef)applicationName);
 #endif
 }

 void WebProcess::platformInitializeProcess(const ChildProcessInitializationParameters&)
 {
     WKAXRegisterRemoteApp();

 #if ENABLE(SEC_ITEM_SHIM)
     SecItemShim::shared().initialize(this);
 #endif
 }

 #if USE(APPKIT)
 void WebProcess::stopRunLoop()
 {
     ChildProcess::stopNSAppRunLoop();
 }
 #endif

 void WebProcess::platformTerminate()
 {
     if (m_clearResourceCachesDispatchGroup) {
         dispatch_group_wait(m_clearResourceCachesDispatchGroup, DISPATCH_TIME_FOREVER);
         dispatch_release(m_clearResourceCachesDispatchGroup);
         m_clearResourceCachesDispatchGroup = 0;
     }
 }

 void WebProcess::initializeSandbox(const ChildProcessInitializationParameters& parameters, SandboxInitializationParameters& sandboxParameters)
 {
 #if ENABLE(WEB_PROCESS_SANDBOX)
     // Need to overide the default, because service has a different bundle ID.
     NSBundle *webkit2Bundle = [NSBundle bundleForClass:NSClassFromString(@"WKView")];
     sandboxParameters.setOverrideSandboxProfilePath([webkit2Bundle pathForResource:@"com.apple.WebProcess" ofType:@"sb"]);

     ChildProcess::initializeSandbox(parameters, sandboxParameters);
 #else
     UNUSED_PARAM(parameters);
     UNUSED_PARAM(sandboxParameters);
 #endif
 }

 void WebProcess::updateActivePages()
 {
 #if USE(APPKIT) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
     RetainPtr<CFMutableArrayRef> activePageURLs = adoptCF(CFArrayCreateMutable(0, 0, &kCFTypeArrayCallBacks));
     for (const auto& iter: m_pageMap) {
         WebPage* page = iter.value.get();
         WebFrame* mainFrame = page->mainWebFrame();
         if (!mainFrame)
             continue;
         String mainFrameOriginString;
         RefPtr<SecurityOrigin> mainFrameOrigin = SecurityOrigin::createFromString(mainFrame->url());
         if (!mainFrameOrigin->isUnique())
             mainFrameOriginString = mainFrameOrigin->toRawString();
         else
             mainFrameOriginString = URL(URL(), mainFrame->url()).protocol() + ':'; // toRawString() is not supposed to work with unique origins, and would just return "://".

         NSURL *originAsNSURL = [NSURL URLWithString:mainFrameOriginString];
         // +[NSURL URLWithString:] returns nil when its argument is malformed. It's unclear how we can possibly have a malformed URL here,
         // but it happens in practice according to <rdar://problem/14173389>. Leaving an assertion in to catch a reproducible case.
         ASSERT(originAsNSURL);
         NSString *userVisibleOriginString = originAsNSURL ? userVisibleString(originAsNSURL) : @"(null)";

         CFArrayAppendValue(activePageURLs.get(), userVisibleOriginString);
     }
     WKSetApplicationInformationItem(CFSTR("LSActivePageUserVisibleOriginsKey"), activePageURLs.get());
 #endif
 }

 } // namespace WebKit
	/*
	* 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.
	*/

	#import "config.h"
	#import "WebProcess.h"

	#import "CustomProtocolManager.h"
	#import "SandboxExtension.h"
	#import "SandboxInitializationParameters.h"
	#import "SecItemShim.h"
	#import "WKFullKeyboardAccessWatcher.h"
	#import "WebFrame.h"
	#import "WebInspector.h"
	#import "WebPage.h"
	#import "WebProcessCreationParameters.h"
	#import "WebProcessProxyMessages.h"
	#import <JavaScriptCore/Options.h>
	#import <WebCore/AXObjectCache.h>
	#import <WebCore/FileSystem.h>
	#import <WebCore/Font.h>
	#import <WebCore/LocalizedStrings.h>
	#import <WebCore/MemoryCache.h>
	#import <WebCore/PageCache.h>
	#import <WebCore/WebCoreNSURLExtras.h>
	#import <WebKitSystemInterface.h>
	#import <algorithm>
	#import <dispatch/dispatch.h>
	#import <mach/host_info.h>
	#import <mach/mach.h>
	#import <mach/mach_error.h>
	#import <objc/runtime.h>
	#import <stdio.h>

	using namespace WebCore;

	namespace WebKit {

	static uint64_t memorySize()
	{
	static host_basic_info_data_t hostInfo;

	static dispatch_once_t once;
	dispatch_once(&once, ^() {
	mach_port_t host = mach_host_self();
	mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
	kern_return_t r = host_info(host, HOST_BASIC_INFO, (host_info_t)&hostInfo, &count);
	mach_port_deallocate(mach_task_self(), host);

	if (r != KERN_SUCCESS)
	LOG_ERROR("%s : host_info(%d) : %s.\n", __FUNCTION__, r, mach_error_string(r));
	});

	return hostInfo.max_mem;
	}

	static uint64_t volumeFreeSize(NSString *path)
	{
	NSDictionary *fileSystemAttributesDictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:path error:NULL];
	return [[fileSystemAttributesDictionary objectForKey:NSFileSystemFreeSize] unsignedLongLongValue];
	}

	void WebProcess::platformSetCacheModel(CacheModel cacheModel)
	{
	RetainPtr<NSString> nsurlCacheDirectory = adoptNS((NSString *)WKCopyFoundationCacheDirectory());
	if (!nsurlCacheDirectory)
	nsurlCacheDirectory = NSHomeDirectory();

	// As a fudge factor, use 1000 instead of 1024, in case the reported byte
	// count doesn't align exactly to a megabyte boundary.
	uint64_t memSize = memorySize() / 1024 / 1000;
	uint64_t diskFreeSize = volumeFreeSize(nsurlCacheDirectory.get()) / 1024 / 1000;

	unsigned cacheTotalCapacity = 0;
	unsigned cacheMinDeadCapacity = 0;
	unsigned cacheMaxDeadCapacity = 0;
	double deadDecodedDataDeletionInterval = 0;
	unsigned pageCacheCapacity = 0;
	unsigned long urlCacheMemoryCapacity = 0;
	unsigned long urlCacheDiskCapacity = 0;

	calculateCacheSizes(cacheModel, memSize, diskFreeSize,
	cacheTotalCapacity, cacheMinDeadCapacity, cacheMaxDeadCapacity, deadDecodedDataDeletionInterval,
	pageCacheCapacity, urlCacheMemoryCapacity, urlCacheDiskCapacity);


	memoryCache()->setCapacities(cacheMinDeadCapacity, cacheMaxDeadCapacity, cacheTotalCapacity);
	memoryCache()->setDeadDecodedDataDeletionInterval(deadDecodedDataDeletionInterval);
	pageCache()->setCapacity(pageCacheCapacity);

	NSURLCache *nsurlCache = [NSURLCache sharedURLCache];

	// FIXME: Once there is no loading being done in the WebProcess, we should remove this,
	// as calling [NSURLCache sharedURLCache] initializes the cache, which we would rather not do.
	if (usesNetworkProcess()) {
	[nsurlCache setMemoryCapacity:0];
	[nsurlCache setDiskCapacity:0];
	return;
	}

	[nsurlCache setMemoryCapacity:urlCacheMemoryCapacity];
	[nsurlCache setDiskCapacity:std::max<unsigned long>(urlCacheDiskCapacity, [nsurlCache diskCapacity])]; // Don't shrink a big disk cache, since that would cause churn.
	}

	void WebProcess::platformClearResourceCaches(ResourceCachesToClear cachesToClear)
	{
	if (cachesToClear == InMemoryResourceCachesOnly)
	return;

	// If we're using the network process then it is the only one that needs to clear the disk cache.
	if (usesNetworkProcess())
	return;

	if (!m_clearResourceCachesDispatchGroup)
	m_clearResourceCachesDispatchGroup = dispatch_group_create();

	dispatch_group_async(m_clearResourceCachesDispatchGroup, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
	[[NSURLCache sharedURLCache] removeAllCachedResponses];
	});
	}

	#if USE(APPKIT)
	static id NSApplicationAccessibilityFocusedUIElement(NSApplication*, SEL)
	{
	WebPage* page = WebProcess::shared().focusedWebPage();
	if (!page \|\| !page->accessibilityRemoteObject())
	return 0;

	return [page->accessibilityRemoteObject() accessibilityFocusedUIElement];
	}
	#endif

	void WebProcess::platformInitializeWebProcess(const WebProcessCreationParameters& parameters, IPC::MessageDecoder&)
	{
	#if ENABLE(WEB_PROCESS_SANDBOX)
	SandboxExtension::consumePermanently(parameters.uiProcessBundleResourcePathExtensionHandle);
	SandboxExtension::consumePermanently(parameters.localStorageDirectoryExtensionHandle);
	SandboxExtension::consumePermanently(parameters.databaseDirectoryExtensionHandle);
	SandboxExtension::consumePermanently(parameters.applicationCacheDirectoryExtensionHandle);
	SandboxExtension::consumePermanently(parameters.diskCacheDirectoryExtensionHandle);
	#endif

	// When the network process is enabled, each web process wants a stand-alone
	// NSURLCache, which it can disable to save memory.
	if (!usesNetworkProcess()) {
	if (!parameters.diskCacheDirectory.isNull()) {
	[NSURLCache setSharedURLCache:adoptNS([[NSURLCache alloc]
	initWithMemoryCapacity:parameters.nsURLCacheMemoryCapacity
	diskCapacity:parameters.nsURLCacheDiskCapacity
	diskPath:parameters.diskCacheDirectory]).get()];
	}
	}

	m_compositingRenderServerPort = parameters.acceleratedCompositingPort.port();
	m_presenterApplicationPid = parameters.presenterApplicationPid;
	m_shouldForceScreenFontSubstitution = parameters.shouldForceScreenFontSubstitution;
	Font::setDefaultTypesettingFeatures(parameters.shouldEnableKerningAndLigaturesByDefault ? Kerning \| Ligatures : 0);

	if (!JSC::Options::useJITWasOverridden())
	JSC::Options::useJIT() = parameters.shouldEnableJIT;

	if (!JSC::Options::useFTLJITWasOverridden())
	JSC::Options::useFTLJIT() = parameters.shouldEnableFTL;

	setEnhancedAccessibility(parameters.accessibilityEnhancedUserInterfaceEnabled);

	#if USE(APPKIT)
	// rdar://9118639 accessibilityFocusedUIElement in NSApplication defaults to use the keyWindow. Since there's
	// no window in WK2, NSApplication needs to use the focused page's focused element.
	Method methodToPatch = class_getInstanceMethod([NSApplication class], @selector(accessibilityFocusedUIElement));
	method_setImplementation(methodToPatch, (IMP)NSApplicationAccessibilityFocusedUIElement);
	#endif
	}

	void WebProcess::initializeProcessName(const ChildProcessInitializationParameters& parameters)
	{
	#if !PLATFORM(IOS)
	NSString applicationName = [NSString stringWithFormat:WEB_UI_STRING("%@ Web Content", "Visible name of the web process. The argument is the application name."), (NSString )parameters.uiProcessName];
	WKSetVisibleApplicationName((CFStringRef)applicationName);
	#endif
	}

	void WebProcess::platformInitializeProcess(const ChildProcessInitializationParameters&)
	{
	WKAXRegisterRemoteApp();

	#if ENABLE(SEC_ITEM_SHIM)
	SecItemShim::shared().initialize(this);
	#endif
	}

	#if USE(APPKIT)
	void WebProcess::stopRunLoop()
	{
	ChildProcess::stopNSAppRunLoop();
	}
	#endif

	void WebProcess::platformTerminate()
	{
	if (m_clearResourceCachesDispatchGroup) {
	dispatch_group_wait(m_clearResourceCachesDispatchGroup, DISPATCH_TIME_FOREVER);
	dispatch_release(m_clearResourceCachesDispatchGroup);
	m_clearResourceCachesDispatchGroup = 0;
	}
	}

	void WebProcess::initializeSandbox(const ChildProcessInitializationParameters& parameters, SandboxInitializationParameters& sandboxParameters)
	{
	#if ENABLE(WEB_PROCESS_SANDBOX)
	// Need to overide the default, because service has a different bundle ID.
	NSBundle *webkit2Bundle = [NSBundle bundleForClass:NSClassFromString(@"WKView")];
	sandboxParameters.setOverrideSandboxProfilePath([webkit2Bundle pathForResource:@"com.apple.WebProcess" ofType:@"sb"]);

	ChildProcess::initializeSandbox(parameters, sandboxParameters);
	#else
	UNUSED_PARAM(parameters);
	UNUSED_PARAM(sandboxParameters);
	#endif
	}

	void WebProcess::updateActivePages()
	{
	#if USE(APPKIT) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
	RetainPtr<CFMutableArrayRef> activePageURLs = adoptCF(CFArrayCreateMutable(0, 0, &kCFTypeArrayCallBacks));
	for (const auto& iter: m_pageMap) {
	WebPage* page = iter.value.get();
	WebFrame* mainFrame = page->mainWebFrame();
	if (!mainFrame)
	continue;
	String mainFrameOriginString;
	RefPtr<SecurityOrigin> mainFrameOrigin = SecurityOrigin::createFromString(mainFrame->url());
	if (!mainFrameOrigin->isUnique())
	mainFrameOriginString = mainFrameOrigin->toRawString();
	else
	mainFrameOriginString = URL(URL(), mainFrame->url()).protocol() + ':'; // toRawString() is not supposed to work with unique origins, and would just return "://".

	NSURL *originAsNSURL = [NSURL URLWithString:mainFrameOriginString];
	// +[NSURL URLWithString:] returns nil when its argument is malformed. It's unclear how we can possibly have a malformed URL here,
	// but it happens in practice according to <rdar://problem/14173389>. Leaving an assertion in to catch a reproducible case.
	ASSERT(originAsNSURL);
	NSString *userVisibleOriginString = originAsNSURL ? userVisibleString(originAsNSURL) : @"(null)";

	CFArrayAppendValue(activePageURLs.get(), userVisibleOriginString);
	}
	WKSetApplicationInformationItem(CFSTR("LSActivePageUserVisibleOriginsKey"), activePageURLs.get());
	#endif
	}

	} // namespace WebKit