Source/WebKit2/Shared/Downloads/cfnet/DownloadCFNet.cpp - platform/external/chromium_org/third_party/WebKit - Git at Google

 /*
  * Copyright (C) 2010, 2011 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 "Download.h"

 #include "DataReference.h"
 #include "DownloadAuthenticationClient.h"

 #pragma warning(push, 0)
 #include <WebCore/AuthenticationCF.h>
 #include <WebCore/AuthenticationChallenge.h>
 #include <WebCore/DownloadBundle.h>
 #include <WebCore/LoaderRunLoopCF.h>
 #include <WebCore/NotImplemented.h>
 #include <WebCore/ResourceError.h>
 #include <WebCore/ResourceHandle.h>
 #include <WebCore/ResourceResponse.h>
 #pragma warning(pop)

 using namespace WebCore;

 namespace WebKit {

 // CFURLDownload Callbacks ----------------------------------------------------------------
 static void didStartCallback(CFURLDownloadRef download, const void* clientInfo);
 static CFURLRequestRef willSendRequestCallback(CFURLDownloadRef download, CFURLRequestRef request, CFURLResponseRef redirectionResponse, const void* clientInfo);
 static void didReceiveAuthenticationChallengeCallback(CFURLDownloadRef download, CFURLAuthChallengeRef challenge, const void* clientInfo);
 static void didReceiveResponseCallback(CFURLDownloadRef download, CFURLResponseRef response, const void* clientInfo);
 static void willResumeWithResponseCallback(CFURLDownloadRef download, CFURLResponseRef response, UInt64 startingByte, const void* clientInfo);
 static void didReceiveDataCallback(CFURLDownloadRef download, CFIndex length, const void* clientInfo);
 static Boolean shouldDecodeDataOfMIMETypeCallback(CFURLDownloadRef download, CFStringRef encodingType, const void* clientInfo);
 static void decideDestinationWithSuggestedObjectNameCallback(CFURLDownloadRef download, CFStringRef objectName, const void* clientInfo);
 static void didCreateDestinationCallback(CFURLDownloadRef download, CFURLRef path, const void* clientInfo);
 static void didFinishCallback(CFURLDownloadRef download, const void* clientInfo);
 static void didFailCallback(CFURLDownloadRef download, CFErrorRef error, const void* clientInfo);

 void Download::useCredential(const WebCore::AuthenticationChallenge& challenge, const WebCore::Credential& credential)
 {
     if (!m_download)
         return;
     RetainPtr<CFURLCredentialRef> cfCredential(AdoptCF, createCF(credential));
     CFURLDownloadUseCredential(m_download.get(), cfCredential.get(), challenge.cfURLAuthChallengeRef());
 }

 void Download::continueWithoutCredential(const WebCore::AuthenticationChallenge& challenge)
 {
     if (!m_download)
         return;
     CFURLDownloadUseCredential(m_download.get(), 0, challenge.cfURLAuthChallengeRef());
 }

 void Download::cancelAuthenticationChallenge(const WebCore::AuthenticationChallenge&)
 {
     if (!m_download)
         return;
     CFURLDownloadCancel(m_download.get());
     m_download = 0;
 }

 DownloadAuthenticationClient* Download::authenticationClient()
 {
     if (!m_authenticationClient)
         m_authenticationClient = DownloadAuthenticationClient::create(this);
     return m_authenticationClient.get();
 }

 void Download::start()
 {
     ASSERT(!m_download);

     CFURLRequestRef cfRequest = m_request.cfURLRequest();

     CFURLDownloadClient client = {0, this, 0, 0, 0, didStartCallback, willSendRequestCallback, didReceiveAuthenticationChallengeCallback,
                                   didReceiveResponseCallback, willResumeWithResponseCallback, didReceiveDataCallback, shouldDecodeDataOfMIMETypeCallback,
                                   decideDestinationWithSuggestedObjectNameCallback, didCreateDestinationCallback, didFinishCallback, didFailCallback};
     m_download.adoptCF(CFURLDownloadCreate(0, cfRequest, &client));

     // FIXME: Allow this to be changed by the client.
     CFURLDownloadSetDeletesUponFailure(m_download.get(), false);

 #if OS(WINDOWS)
     CFURLDownloadScheduleWithCurrentMessageQueue(m_download.get());
 #endif
     CFURLDownloadScheduleDownloadWithRunLoop(m_download.get(), loaderRunLoop(), kCFRunLoopDefaultMode);

     CFURLDownloadStart(m_download.get());
 }

 void Download::startWithHandle(ResourceHandle* handle, const ResourceResponse& response)
 {
     ASSERT(!m_download);

     CFURLConnectionRef connection = handle->connection();
     if (!connection)
         return;

     CFURLDownloadClient client = {0, this, 0, 0, 0, didStartCallback, willSendRequestCallback, didReceiveAuthenticationChallengeCallback,
                                   didReceiveResponseCallback, willResumeWithResponseCallback, didReceiveDataCallback, shouldDecodeDataOfMIMETypeCallback,
                                   decideDestinationWithSuggestedObjectNameCallback, didCreateDestinationCallback, didFinishCallback, didFailCallback};

     m_download.adoptCF(CFURLDownloadCreateAndStartWithLoadingConnection(0, connection, handle->firstRequest().cfURLRequest(), response.cfURLResponse(), &client));

     // It is possible for CFURLDownloadCreateAndStartWithLoadingConnection() to fail if the passed in CFURLConnection is not in a "downloadable state"
     // However, we should never hit that case
     if (!m_download)
         ASSERT_NOT_REACHED();

     // The CFURLDownload either starts successfully and retains the CFURLConnection,
     // or it fails to creating and we have a now-useless connection with a dangling ref.
     // Either way, we need to release the connection to balance out ref counts
     handle->releaseConnectionForDownload();
     CFRelease(connection);
 }

 void Download::cancel()
 {
     ASSERT(m_download);
     if (!m_download)
         return;

     CFURLDownloadSetDeletesUponFailure(m_download.get(), false);
     CFURLDownloadCancel(m_download.get());

     RetainPtr<CFDataRef> resumeData(AdoptCF, CFURLDownloadCopyResumeData(m_download.get()));
     if (resumeData)
         DownloadBundle::appendResumeData(resumeData.get(), m_bundlePath);

     didCancel(CoreIPC::DataReference());
 }

 void Download::platformInvalidate()
 {
     m_download = nullptr;
     if (m_authenticationClient)
         m_authenticationClient->detach();
 }

 void Download::didDecideDestination(const String& destination, bool allowOverwrite)
 {
     ASSERT(!destination.isEmpty());
     if (destination.isEmpty())
         return;

     m_allowOverwrite = allowOverwrite;
     m_destination = destination;
     m_bundlePath = destination + DownloadBundle::fileExtension();

     RetainPtr<CFStringRef> bundlePath(AdoptCF, CFStringCreateWithCharactersNoCopy(0, reinterpret_cast<const UniChar*>(m_bundlePath.characters()), m_bundlePath.length(), kCFAllocatorNull));
     RetainPtr<CFURLRef> bundlePathURL(AdoptCF, CFURLCreateWithFileSystemPath(0, bundlePath.get(), kCFURLWindowsPathStyle, false));
     CFURLDownloadSetDestination(m_download.get(), bundlePathURL.get(), allowOverwrite);
 }

 // CFURLDownload Callbacks ----------------------------------------------------------------
 static Download* downloadFromClientInfo(const void* clientInfo)
 {
     return reinterpret_cast<Download*>(const_cast<void*>(clientInfo));
 }

 void didStartCallback(CFURLDownloadRef, const void* clientInfo)
 {
     downloadFromClientInfo(clientInfo)->didStart();
 }

 CFURLRequestRef willSendRequestCallback(CFURLDownloadRef, CFURLRequestRef request, CFURLResponseRef redirectionResponse, const void* clientInfo)
 {
     // CFNetwork requires us to return a retained request.
     CFRetain(request);
     return request;
 }

 void didReceiveAuthenticationChallengeCallback(CFURLDownloadRef, CFURLAuthChallengeRef challenge, const void* clientInfo)
 {
     Download* download = downloadFromClientInfo(clientInfo);
     download->didReceiveAuthenticationChallenge(AuthenticationChallenge(challenge, download->authenticationClient()));
 }

 void didReceiveResponseCallback(CFURLDownloadRef, CFURLResponseRef response, const void* clientInfo)
 {
     downloadFromClientInfo(clientInfo)->didReceiveResponse(ResourceResponse(response));
 }

 void willResumeWithResponseCallback(CFURLDownloadRef, CFURLResponseRef response, UInt64 startingByte, const void* clientInfo)
 {
     // FIXME: implement.
     notImplemented();
 }

 void didReceiveDataCallback(CFURLDownloadRef, CFIndex length, const void* clientInfo)
 {
     downloadFromClientInfo(clientInfo)->didReceiveData(length);
 }

 Boolean shouldDecodeDataOfMIMETypeCallback(CFURLDownloadRef, CFStringRef encodingType, const void* clientInfo)
 {
     return downloadFromClientInfo(clientInfo)->shouldDecodeSourceDataOfMIMEType(encodingType);
 }

 void decideDestinationWithSuggestedObjectNameCallback(CFURLDownloadRef, CFStringRef objectName, const void* clientInfo)
 {
     Download* download = downloadFromClientInfo(clientInfo);
     bool allowOverwrite;
     download->decideDestinationWithSuggestedFilename(objectName, allowOverwrite);
 }

 void didCreateDestinationCallback(CFURLDownloadRef, CFURLRef, const void* clientInfo)
 {
     // The concept of the ".download bundle" is internal to the Download, so we try to hide its
     // existence by reporting the final destination was created, when in reality the bundle was created.

     Download* download = downloadFromClientInfo(clientInfo);
     download->didCreateDestination(download->destination());
 }

 void didFinishCallback(CFURLDownloadRef, const void* clientInfo)
 {
     downloadFromClientInfo(clientInfo)->didFinish();
 }

 void didFailCallback(CFURLDownloadRef, CFErrorRef error, const void* clientInfo)
 {
     CoreIPC::DataReference dataReference(0, 0);
     downloadFromClientInfo(clientInfo)->didFail(ResourceError(error), dataReference);
 }

 void Download::receivedCredential(const AuthenticationChallenge& authenticationChallenge, const Credential& credential)
 {
     ASSERT(authenticationChallenge.authenticationClient());
     authenticationChallenge.authenticationClient()->receivedCredential(authenticationChallenge, credential);
 }

 void Download::receivedRequestToContinueWithoutCredential(const AuthenticationChallenge& authenticationChallenge)
 {
     ASSERT(authenticationChallenge.authenticationClient());
     authenticationChallenge.authenticationClient()->receivedRequestToContinueWithoutCredential(authenticationChallenge);
 }

 void Download::receivedCancellation(const AuthenticationChallenge& authenticationChallenge)
 {
     ASSERT(authenticationChallenge.authenticationClient());
     authenticationChallenge.authenticationClient()->receivedCancellation(authenticationChallenge);
 }

 } // namespace WebKit
	/*
	* Copyright (C) 2010, 2011 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 "Download.h"

	#include "DataReference.h"
	#include "DownloadAuthenticationClient.h"

	#pragma warning(push, 0)
	#include <WebCore/AuthenticationCF.h>
	#include <WebCore/AuthenticationChallenge.h>
	#include <WebCore/DownloadBundle.h>
	#include <WebCore/LoaderRunLoopCF.h>
	#include <WebCore/NotImplemented.h>
	#include <WebCore/ResourceError.h>
	#include <WebCore/ResourceHandle.h>
	#include <WebCore/ResourceResponse.h>
	#pragma warning(pop)

	using namespace WebCore;

	namespace WebKit {

	// CFURLDownload Callbacks ----------------------------------------------------------------
	static void didStartCallback(CFURLDownloadRef download, const void* clientInfo);
	static CFURLRequestRef willSendRequestCallback(CFURLDownloadRef download, CFURLRequestRef request, CFURLResponseRef redirectionResponse, const void* clientInfo);
	static void didReceiveAuthenticationChallengeCallback(CFURLDownloadRef download, CFURLAuthChallengeRef challenge, const void* clientInfo);
	static void didReceiveResponseCallback(CFURLDownloadRef download, CFURLResponseRef response, const void* clientInfo);
	static void willResumeWithResponseCallback(CFURLDownloadRef download, CFURLResponseRef response, UInt64 startingByte, const void* clientInfo);
	static void didReceiveDataCallback(CFURLDownloadRef download, CFIndex length, const void* clientInfo);
	static Boolean shouldDecodeDataOfMIMETypeCallback(CFURLDownloadRef download, CFStringRef encodingType, const void* clientInfo);
	static void decideDestinationWithSuggestedObjectNameCallback(CFURLDownloadRef download, CFStringRef objectName, const void* clientInfo);
	static void didCreateDestinationCallback(CFURLDownloadRef download, CFURLRef path, const void* clientInfo);
	static void didFinishCallback(CFURLDownloadRef download, const void* clientInfo);
	static void didFailCallback(CFURLDownloadRef download, CFErrorRef error, const void* clientInfo);

	void Download::useCredential(const WebCore::AuthenticationChallenge& challenge, const WebCore::Credential& credential)
	{
	if (!m_download)
	return;
	RetainPtr<CFURLCredentialRef> cfCredential(AdoptCF, createCF(credential));
	CFURLDownloadUseCredential(m_download.get(), cfCredential.get(), challenge.cfURLAuthChallengeRef());
	}

	void Download::continueWithoutCredential(const WebCore::AuthenticationChallenge& challenge)
	{
	if (!m_download)
	return;
	CFURLDownloadUseCredential(m_download.get(), 0, challenge.cfURLAuthChallengeRef());
	}

	void Download::cancelAuthenticationChallenge(const WebCore::AuthenticationChallenge&)
	{
	if (!m_download)
	return;
	CFURLDownloadCancel(m_download.get());
	m_download = 0;
	}

	DownloadAuthenticationClient* Download::authenticationClient()
	{
	if (!m_authenticationClient)
	m_authenticationClient = DownloadAuthenticationClient::create(this);
	return m_authenticationClient.get();
	}

	void Download::start()
	{
	ASSERT(!m_download);

	CFURLRequestRef cfRequest = m_request.cfURLRequest();

	CFURLDownloadClient client = {0, this, 0, 0, 0, didStartCallback, willSendRequestCallback, didReceiveAuthenticationChallengeCallback,
	didReceiveResponseCallback, willResumeWithResponseCallback, didReceiveDataCallback, shouldDecodeDataOfMIMETypeCallback,
	decideDestinationWithSuggestedObjectNameCallback, didCreateDestinationCallback, didFinishCallback, didFailCallback};
	m_download.adoptCF(CFURLDownloadCreate(0, cfRequest, &client));

	// FIXME: Allow this to be changed by the client.
	CFURLDownloadSetDeletesUponFailure(m_download.get(), false);

	#if OS(WINDOWS)
	CFURLDownloadScheduleWithCurrentMessageQueue(m_download.get());
	#endif
	CFURLDownloadScheduleDownloadWithRunLoop(m_download.get(), loaderRunLoop(), kCFRunLoopDefaultMode);

	CFURLDownloadStart(m_download.get());
	}

	void Download::startWithHandle(ResourceHandle* handle, const ResourceResponse& response)
	{
	ASSERT(!m_download);

	CFURLConnectionRef connection = handle->connection();
	if (!connection)
	return;

	CFURLDownloadClient client = {0, this, 0, 0, 0, didStartCallback, willSendRequestCallback, didReceiveAuthenticationChallengeCallback,
	didReceiveResponseCallback, willResumeWithResponseCallback, didReceiveDataCallback, shouldDecodeDataOfMIMETypeCallback,
	decideDestinationWithSuggestedObjectNameCallback, didCreateDestinationCallback, didFinishCallback, didFailCallback};

	m_download.adoptCF(CFURLDownloadCreateAndStartWithLoadingConnection(0, connection, handle->firstRequest().cfURLRequest(), response.cfURLResponse(), &client));

	// It is possible for CFURLDownloadCreateAndStartWithLoadingConnection() to fail if the passed in CFURLConnection is not in a "downloadable state"
	// However, we should never hit that case
	if (!m_download)
	ASSERT_NOT_REACHED();

	// The CFURLDownload either starts successfully and retains the CFURLConnection,
	// or it fails to creating and we have a now-useless connection with a dangling ref.
	// Either way, we need to release the connection to balance out ref counts
	handle->releaseConnectionForDownload();
	CFRelease(connection);
	}

	void Download::cancel()
	{
	ASSERT(m_download);
	if (!m_download)
	return;

	CFURLDownloadSetDeletesUponFailure(m_download.get(), false);
	CFURLDownloadCancel(m_download.get());

	RetainPtr<CFDataRef> resumeData(AdoptCF, CFURLDownloadCopyResumeData(m_download.get()));
	if (resumeData)
	DownloadBundle::appendResumeData(resumeData.get(), m_bundlePath);

	didCancel(CoreIPC::DataReference());
	}

	void Download::platformInvalidate()
	{
	m_download = nullptr;
	if (m_authenticationClient)
	m_authenticationClient->detach();
	}

	void Download::didDecideDestination(const String& destination, bool allowOverwrite)
	{
	ASSERT(!destination.isEmpty());
	if (destination.isEmpty())
	return;

	m_allowOverwrite = allowOverwrite;
	m_destination = destination;
	m_bundlePath = destination + DownloadBundle::fileExtension();

	RetainPtr<CFStringRef> bundlePath(AdoptCF, CFStringCreateWithCharactersNoCopy(0, reinterpret_cast<const UniChar*>(m_bundlePath.characters()), m_bundlePath.length(), kCFAllocatorNull));
	RetainPtr<CFURLRef> bundlePathURL(AdoptCF, CFURLCreateWithFileSystemPath(0, bundlePath.get(), kCFURLWindowsPathStyle, false));
	CFURLDownloadSetDestination(m_download.get(), bundlePathURL.get(), allowOverwrite);
	}

	// CFURLDownload Callbacks ----------------------------------------------------------------
	static Download* downloadFromClientInfo(const void* clientInfo)
	{
	return reinterpret_cast<Download>(const_cast<void>(clientInfo));
	}

	void didStartCallback(CFURLDownloadRef, const void* clientInfo)
	{
	downloadFromClientInfo(clientInfo)->didStart();
	}

	CFURLRequestRef willSendRequestCallback(CFURLDownloadRef, CFURLRequestRef request, CFURLResponseRef redirectionResponse, const void* clientInfo)
	{
	// CFNetwork requires us to return a retained request.
	CFRetain(request);
	return request;
	}

	void didReceiveAuthenticationChallengeCallback(CFURLDownloadRef, CFURLAuthChallengeRef challenge, const void* clientInfo)
	{
	Download* download = downloadFromClientInfo(clientInfo);
	download->didReceiveAuthenticationChallenge(AuthenticationChallenge(challenge, download->authenticationClient()));
	}

	void didReceiveResponseCallback(CFURLDownloadRef, CFURLResponseRef response, const void* clientInfo)
	{
	downloadFromClientInfo(clientInfo)->didReceiveResponse(ResourceResponse(response));
	}

	void willResumeWithResponseCallback(CFURLDownloadRef, CFURLResponseRef response, UInt64 startingByte, const void* clientInfo)
	{
	// FIXME: implement.
	notImplemented();
	}

	void didReceiveDataCallback(CFURLDownloadRef, CFIndex length, const void* clientInfo)
	{
	downloadFromClientInfo(clientInfo)->didReceiveData(length);
	}

	Boolean shouldDecodeDataOfMIMETypeCallback(CFURLDownloadRef, CFStringRef encodingType, const void* clientInfo)
	{
	return downloadFromClientInfo(clientInfo)->shouldDecodeSourceDataOfMIMEType(encodingType);
	}

	void decideDestinationWithSuggestedObjectNameCallback(CFURLDownloadRef, CFStringRef objectName, const void* clientInfo)
	{
	Download* download = downloadFromClientInfo(clientInfo);
	bool allowOverwrite;
	download->decideDestinationWithSuggestedFilename(objectName, allowOverwrite);
	}

	void didCreateDestinationCallback(CFURLDownloadRef, CFURLRef, const void* clientInfo)
	{
	// The concept of the ".download bundle" is internal to the Download, so we try to hide its
	// existence by reporting the final destination was created, when in reality the bundle was created.

	Download* download = downloadFromClientInfo(clientInfo);
	download->didCreateDestination(download->destination());
	}

	void didFinishCallback(CFURLDownloadRef, const void* clientInfo)
	{
	downloadFromClientInfo(clientInfo)->didFinish();
	}

	void didFailCallback(CFURLDownloadRef, CFErrorRef error, const void* clientInfo)
	{
	CoreIPC::DataReference dataReference(0, 0);
	downloadFromClientInfo(clientInfo)->didFail(ResourceError(error), dataReference);
	}

	void Download::receivedCredential(const AuthenticationChallenge& authenticationChallenge, const Credential& credential)
	{
	ASSERT(authenticationChallenge.authenticationClient());
	authenticationChallenge.authenticationClient()->receivedCredential(authenticationChallenge, credential);
	}

	void Download::receivedRequestToContinueWithoutCredential(const AuthenticationChallenge& authenticationChallenge)
	{
	ASSERT(authenticationChallenge.authenticationClient());
	authenticationChallenge.authenticationClient()->receivedRequestToContinueWithoutCredential(authenticationChallenge);
	}

	void Download::receivedCancellation(const AuthenticationChallenge& authenticationChallenge)
	{
	ASSERT(authenticationChallenge.authenticationClient());
	authenticationChallenge.authenticationClient()->receivedCancellation(authenticationChallenge);
	}

	} // namespace WebKit