8 files changed, 973 insertions, 0 deletions
diff --git a/Source/WebKit2/WebProcess/Downloads/Download.cpp b/Source/WebKit2/WebProcess/Downloads/Download.cpp
new file mode 100644
index 0000000..3cb5588
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Downloads/Download.cpp
@@ -0,0 +1,132 @@
+/*
+ * 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 "Download.h"
+
+#include "Connection.h"
+#include "DataReference.h"
+#include "DownloadProxyMessages.h"
+#include "DownloadManager.h"
+#include "SandboxExtension.h"
+#include "WebCoreArgumentCoders.h"
+#include "WebProcess.h"
+
+using namespace WebCore;
+
+namespace WebKit {
+
+PassOwnPtr<Download> Download::create(uint64_t downloadID, const ResourceRequest& request)
+{
+    return adoptPtr(new Download(downloadID, request));
+}
+
+Download::Download(uint64_t downloadID, const ResourceRequest& request)
+    : m_downloadID(downloadID)
+    , m_request(request)
+{
+    ASSERT(m_downloadID);
+}
+
+Download::~Download()
+{
+    platformInvalidate();
+}
+
+CoreIPC::Connection* Download::connection() const
+{
+    return WebProcess::shared().connection();
+}
+
+void Download::didStart()
+{
+    send(Messages::DownloadProxy::DidStart(m_request));
+}
+
+void Download::didReceiveResponse(const ResourceResponse& response)
+{
+    send(Messages::DownloadProxy::DidReceiveResponse(response));
+}
+
+void Download::didReceiveData(uint64_t length)
+{
+    send(Messages::DownloadProxy::DidReceiveData(length));
+}
+
+bool Download::shouldDecodeSourceDataOfMIMEType(const String& mimeType)
+{
+    bool result;
+    if (!sendSync(Messages::DownloadProxy::ShouldDecodeSourceDataOfMIMEType(mimeType), Messages::DownloadProxy::ShouldDecodeSourceDataOfMIMEType::Reply(result)))
+        return true;
+
+    return result;
+}
+
+String Download::decideDestinationWithSuggestedFilename(const String& filename, bool& allowOverwrite)
+{
+    String destination;
+    SandboxExtension::Handle sandboxExtensionHandle;
+    if (!sendSync(Messages::DownloadProxy::DecideDestinationWithSuggestedFilename(filename), Messages::DownloadProxy::DecideDestinationWithSuggestedFilename::Reply(destination, allowOverwrite, sandboxExtensionHandle)))
+        return String();
+
+    m_sandboxExtension = SandboxExtension::create(sandboxExtensionHandle);
+    if (m_sandboxExtension)
+        m_sandboxExtension->consume();
+
+    return destination;
+}
+
+void Download::didCreateDestination(const String& path)
+{
+    send(Messages::DownloadProxy::DidCreateDestination(path));
+}
+
+void Download::didFinish()
+{
+    send(Messages::DownloadProxy::DidFinish());
+
+    if (m_sandboxExtension)
+        m_sandboxExtension->invalidate();
+    DownloadManager::shared().downloadFinished(this);
+}
+
+void Download::didFail(const ResourceError& error, const CoreIPC::DataReference& resumeData)
+{
+    send(Messages::DownloadProxy::DidFail(error, resumeData));
+
+    if (m_sandboxExtension)
+        m_sandboxExtension->invalidate();
+    DownloadManager::shared().downloadFinished(this);
+}
+
+void Download::didCancel(const CoreIPC::DataReference& resumeData)
+{
+    send(Messages::DownloadProxy::DidCancel(resumeData));
+
+    if (m_sandboxExtension)
+        m_sandboxExtension->invalidate();
+    DownloadManager::shared().downloadFinished(this);
+}
+
+} // namespace WebKit
diff --git a/Source/WebKit2/WebProcess/Downloads/Download.h b/Source/WebKit2/WebProcess/Downloads/Download.h
new file mode 100644
index 0000000..2319ec7
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Downloads/Download.h
@@ -0,0 +1,112 @@
+/*
+ * 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.
+ */
+
+#ifndef Download_h
+#define Download_h
+
+#include "MessageSender.h"
+#include <WebCore/ResourceRequest.h>
+#include <wtf/Noncopyable.h>
+#include <wtf/PassOwnPtr.h>
+
+#if PLATFORM(MAC)
+#include <wtf/RetainPtr.h>
+#ifdef __OBJC__
+@class NSURLDownload;
+@class WKDownloadAsDelegate;
+#else
+class NSURLDownload;
+class WKDownloadAsDelegate;
+#endif
+#endif
+
+#if USE(CFNETWORK)
+#include <CFNetwork/CFURLDownloadPriv.h>
+#endif
+
+namespace CoreIPC {
+    class DataReference;
+}
+
+namespace WebCore {
+    class ResourceError;
+    class ResourceHandle;
+    class ResourceResponse;
+}
+
+namespace WebKit {
+
+class SandboxExtension;
+class WebPage;
+
+class Download : public CoreIPC::MessageSender<Download> {
+    WTF_MAKE_NONCOPYABLE(Download);
+
+public:
+    static PassOwnPtr<Download> create(uint64_t downloadID, const WebCore::ResourceRequest&);
+    ~Download();
+
+    // Used by MessageSender.
+    CoreIPC::Connection* connection() const;
+    uint64_t destinationID() const { return downloadID(); }
+
+    void start(WebPage* initiatingWebPage);
+    void startWithHandle(WebPage* initiatingPage, WebCore::ResourceHandle*, const WebCore::ResourceRequest& initialRequest, const WebCore::ResourceResponse&);
+    void cancel();
+
+    uint64_t downloadID() const { return m_downloadID; }
+
+    void didStart();
+    void didReceiveResponse(const WebCore::ResourceResponse&);
+    void didReceiveData(uint64_t length);
+    bool shouldDecodeSourceDataOfMIMEType(const String& mimeType);
+    String decideDestinationWithSuggestedFilename(const String& filename, bool& allowOverwrite);
+    void didCreateDestination(const String& path);
+    void didFinish();
+    void didFail(const WebCore::ResourceError&, const CoreIPC::DataReference& resumeData);
+    void didCancel(const CoreIPC::DataReference& resumeData);
+
+private:
+    Download(uint64_t downloadID, const WebCore::ResourceRequest&);
+
+    void platformInvalidate();
+
+    uint64_t m_downloadID;
+    WebCore::ResourceRequest m_request;
+
+    RefPtr<SandboxExtension> m_sandboxExtension;
+
+#if PLATFORM(MAC)
+    RetainPtr<NSURLDownload> m_nsURLDownload;
+    RetainPtr<WKDownloadAsDelegate> m_delegate;
+#endif
+#if USE(CFNETWORK)
+    RetainPtr<CFURLDownloadRef> m_download;
+#endif
+};
+
+} // namespace WebKit
+
+#endif // Download_h
diff --git a/Source/WebKit2/WebProcess/Downloads/DownloadManager.cpp b/Source/WebKit2/WebProcess/Downloads/DownloadManager.cpp
new file mode 100644
index 0000000..e65883a
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Downloads/DownloadManager.cpp
@@ -0,0 +1,83 @@
+/*
+ * 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 "DownloadManager.h"
+
+#include "Download.h"
+#include "WebProcess.h"
+#include <wtf/StdLibExtras.h>
+
+using namespace WebCore;
+
+namespace WebKit {
+
+DownloadManager& DownloadManager::shared()
+{
+    DEFINE_STATIC_LOCAL(DownloadManager, downloadManager, ());
+    return downloadManager;
+}
+
+DownloadManager::DownloadManager()
+{
+}
+
+void DownloadManager::startDownload(uint64_t downloadID, WebPage* initiatingPage, const ResourceRequest& request)
+{
+    OwnPtr<Download> download = Download::create(downloadID, request);
+    download->start(initiatingPage);
+
+    ASSERT(!m_downloads.contains(downloadID));
+    m_downloads.set(downloadID, download.leakPtr());
+}
+
+void DownloadManager::convertHandleToDownload(uint64_t downloadID, WebPage* initiatingPage, ResourceHandle* handle, const ResourceRequest& request, const ResourceRequest& initialRequest, const ResourceResponse& response)
+{
+    OwnPtr<Download> download = Download::create(downloadID, request);
+
+    download->startWithHandle(initiatingPage, handle, initialRequest, response);
+    ASSERT(!m_downloads.contains(downloadID));
+    m_downloads.set(downloadID, download.leakPtr());
+}
+
+void DownloadManager::cancelDownload(uint64_t downloadID)
+{
+    Download* download = m_downloads.get(downloadID);
+    if (!download)
+        return;
+
+    download->cancel();
+}
+
+void DownloadManager::downloadFinished(Download* download)
+{
+    ASSERT(m_downloads.contains(download->downloadID()));
+    m_downloads.remove(download->downloadID());
+
+    delete download;
+
+    WebProcess::shared().shutdownIfPossible();
+}
+
+} // namespace WebKit
diff --git a/Source/WebKit2/WebProcess/Downloads/DownloadManager.h b/Source/WebKit2/WebProcess/Downloads/DownloadManager.h
new file mode 100644
index 0000000..1f27b86
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Downloads/DownloadManager.h
@@ -0,0 +1,65 @@
+/*
+ * 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.
+ */
+
+#ifndef DownloadManager_h
+#define DownloadManager_h
+
+#include <wtf/HashMap.h>
+#include <wtf/Noncopyable.h>
+
+namespace WebCore {
+    class ResourceHandle;
+    class ResourceRequest;
+    class ResourceResponse;
+}
+
+namespace WebKit {
+
+class Download;
+class WebPage;
+
+class DownloadManager {
+    WTF_MAKE_NONCOPYABLE(DownloadManager);
+
+public:
+    static DownloadManager& shared();
+
+    void startDownload(uint64_t downloadID, WebPage* initiatingPage, const WebCore::ResourceRequest&);
+    void convertHandleToDownload(uint64_t downloadID, WebPage* initiatingPage, WebCore::ResourceHandle*, const WebCore::ResourceRequest&, const WebCore::ResourceRequest& initialRequest, const WebCore::ResourceResponse&);
+
+    void cancelDownload(uint64_t downloadID);
+
+    void downloadFinished(Download*);
+    bool isDownloading() const { return !m_downloads.isEmpty(); }
+
+private:
+    DownloadManager();
+
+    HashMap<uint64_t, Download*> m_downloads;
+};
+
+} // namespace WebKit
+
+#endif // DownloadManager_h
diff --git a/Source/WebKit2/WebProcess/Downloads/cf/DownloadCFNet.cpp b/Source/WebKit2/WebProcess/Downloads/cf/DownloadCFNet.cpp
new file mode 100644
index 0000000..08c381f
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Downloads/cf/DownloadCFNet.cpp
@@ -0,0 +1,185 @@
+/*
+ * 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 "Download.h"
+
+#include "DataReference.h"
+#include "NotImplemented.h"
+
+#pragma warning(push, 0)
+#include <WebCore/LoaderRunLoopCF.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::start(WebPage* initiatingWebPage)
+{
+    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);
+
+    CFURLDownloadScheduleWithCurrentMessageQueue(m_download.get());
+    CFURLDownloadScheduleDownloadWithRunLoop(m_download.get(), loaderRunLoop(), kCFRunLoopDefaultMode);
+}
+
+void Download::startWithHandle(WebPage* initiatingPage, ResourceHandle* handle, const ResourceRequest& initialRequest, 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, initialRequest.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()
+{
+    notImplemented();
+}
+
+void Download::platformInvalidate()
+{
+    m_download = nullptr;
+}
+
+// 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)
+{ 
+    // FIXME: implement.
+    notImplemented();
+}
+
+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 cfURLDownloadRef, CFStringRef objectName, const void* clientInfo)
+{ 
+    Download* download = downloadFromClientInfo(clientInfo);
+    bool allowOverwrite;
+    String destination = download->decideDestinationWithSuggestedFilename(objectName, allowOverwrite);
+    if (destination.isNull())
+        return;
+
+    RetainPtr<CFStringRef> cfPath(AdoptCF, CFStringCreateWithCharactersNoCopy(0, reinterpret_cast<const UniChar*>(destination.characters()), destination.length(), kCFAllocatorNull));
+    RetainPtr<CFURLRef> pathURL(AdoptCF, CFURLCreateWithFileSystemPath(0, cfPath.get(), kCFURLWindowsPathStyle, false));
+    CFURLDownloadSetDestination(cfURLDownloadRef, pathURL.get(), allowOverwrite);
+}
+
+void didCreateDestinationCallback(CFURLDownloadRef, CFURLRef url, const void* clientInfo)
+{ 
+    RetainPtr<CFStringRef> path(AdoptCF, CFURLCopyFileSystemPath(url, kCFURLWindowsPathStyle));
+    String result(path.get());
+    downloadFromClientInfo(clientInfo)->didCreateDestination(result);
+}
+
+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);
+}
+
+} // namespace WebKit
diff --git a/Source/WebKit2/WebProcess/Downloads/curl/DownloadCurl.cpp b/Source/WebKit2/WebProcess/Downloads/curl/DownloadCurl.cpp
new file mode 100644
index 0000000..25ed351
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Downloads/curl/DownloadCurl.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2010 Apple Inc. All rights reserved.
+ * Copyright (C) 2010 Brent Fulgham <bfulgham@webkit.org>
+ *
+ * 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 "Download.h"
+
+#include "NotImplemented.h"
+
+using namespace WebCore;
+
+namespace WebKit {
+
+void Download::start(WebPage* initiatingWebPage)
+{
+    notImplemented();
+}
+
+void Download::startWithHandle(WebPage* initiatingPage, ResourceHandle*, const ResourceRequest& initialRequest, const ResourceResponse&)
+{
+    notImplemented();
+}
+
+void Download::cancel()
+{
+    notImplemented();
+}
+
+void Download::platformInvalidate()
+{
+    notImplemented();
+}
+
+} // namespace WebKit
diff --git a/Source/WebKit2/WebProcess/Downloads/mac/DownloadMac.mm b/Source/WebKit2/WebProcess/Downloads/mac/DownloadMac.mm
new file mode 100644
index 0000000..6839020
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Downloads/mac/DownloadMac.mm
@@ -0,0 +1,287 @@
+/*
+ * 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 "Download.h"
+
+#include <WebCore/BackForwardController.h>
+#include <WebCore/HistoryItem.h>
+#include <WebCore/Page.h>
+#include <WebCore/ResourceHandle.h>
+#include <WebCore/ResourceResponse.h>
+#include "DataReference.h"
+#include "NotImplemented.h"
+#include "WebPage.h"
+
+@interface NSURLDownload (WebNSURLDownloadDetails)
++(id)_downloadWithLoadingConnection:(NSURLConnection *)connection
+                            request:(NSURLRequest *)request
+                           response:(NSURLResponse *)r
+                           delegate:(id)delegate
+                              proxy:(id)proxy;
+- (void)_setOriginatingURL:(NSURL *)originatingURL;
+@end
+
+@interface WKDownloadAsDelegate : NSObject <NSURLConnectionDelegate> {
+    WebKit::Download* _download;
+}
+- (id)initWithDownload:(WebKit::Download*)download;
+- (void)invalidate;
+@end
+
+using namespace WebCore;
+
+namespace WebKit {
+
+static KURL originatingURLFromBackForwardList(WebPage *webPage)
+{
+    if (!webPage)
+        return KURL();
+
+    Page* page = webPage->corePage();
+    if (!page)
+        return KURL();
+
+    KURL originalURL;
+    int backCount = page->backForward()->backCount();
+    for (int backIndex = 0; backIndex <= backCount; backIndex++) {
+        // FIXME: At one point we had code here to check a "was user gesture" flag.
+        // Do we need to restore that logic?
+        HistoryItem* historyItem = page->backForward()->itemAtIndex(-backIndex);
+        if (!historyItem)
+            continue;
+
+        originalURL = historyItem->originalURL(); 
+        if (!originalURL.isNull()) 
+            return originalURL;
+    }
+
+    return KURL();
+}
+
+static void setOriginalURLForDownload(WebPage *webPage, NSURLDownload *download, const ResourceRequest& initialRequest)
+{
+    KURL originalURL;
+    
+    // If there was no referrer, don't traverse the back/forward history
+    // since this download was initiated directly. <rdar://problem/5294691>
+    if (!initialRequest.httpReferrer().isNull()) {
+        // find the first item in the history that was originated by the user
+        originalURL = originatingURLFromBackForwardList(webPage);
+    }
+
+    if (originalURL.isNull())
+        originalURL = initialRequest.url();
+
+    NSURL *originalNSURL = originalURL;
+
+    NSString *scheme = [originalNSURL scheme];
+    NSString *host = [originalNSURL host];
+    if (scheme && host && [scheme length] && [host length]) {
+        NSNumber *port = [originalNSURL port];
+        if (port && [port intValue] < 0)
+            port = nil;
+        RetainPtr<NSString> hostOnlyURLString;
+        if (port)
+            hostOnlyURLString.adoptNS([[NSString alloc] initWithFormat:@"%@://%@:%d", scheme, host, [port intValue]]);
+        else
+            hostOnlyURLString.adoptNS([[NSString alloc] initWithFormat:@"%@://%@", scheme, host]);
+
+        RetainPtr<NSURL> hostOnlyURL = [[NSURL alloc] initWithString:hostOnlyURLString.get()];
+
+        ASSERT([download respondsToSelector:@selector(_setOriginatingURL:)]);
+        [download _setOriginatingURL:hostOnlyURL.get()];
+    }
+}
+
+void Download::start(WebPage* initiatingPage)
+{
+    ASSERT(!m_nsURLDownload);
+    ASSERT(!m_delegate);
+
+    m_delegate.adoptNS([[WKDownloadAsDelegate alloc] initWithDownload:this]);
+    m_nsURLDownload.adoptNS([[NSURLDownload alloc] initWithRequest:m_request.nsURLRequest() delegate:m_delegate.get()]);
+
+    // FIXME: Allow this to be changed by the client.
+    [m_nsURLDownload.get() setDeletesFileUponFailure:NO];
+
+    setOriginalURLForDownload(initiatingPage, m_nsURLDownload.get(), m_request);
+}
+
+void Download::startWithHandle(WebPage* initiatingPage, ResourceHandle* handle, const ResourceRequest& initialRequest, const ResourceResponse& response)
+{
+    ASSERT(!m_nsURLDownload);
+    ASSERT(!m_delegate);
+
+    id proxy = handle->releaseProxy();
+    ASSERT(proxy);
+
+    m_delegate.adoptNS([[WKDownloadAsDelegate alloc] initWithDownload:this]);
+    m_nsURLDownload = [NSURLDownload _downloadWithLoadingConnection:handle->connection()
+                                                            request:m_request.nsURLRequest()
+                                                           response:response.nsURLResponse()
+                                                            delegate:m_delegate.get()
+                                                               proxy:proxy];
+
+    // FIXME: Allow this to be changed by the client.
+    [m_nsURLDownload.get() setDeletesFileUponFailure:NO];
+                                                            
+    setOriginalURLForDownload(initiatingPage, m_nsURLDownload.get(), initialRequest);
+}
+
+void Download::cancel()
+{
+    [m_nsURLDownload.get() cancel];
+
+    RetainPtr<NSData> resumeData = [m_nsURLDownload.get() resumeData];
+    didCancel(CoreIPC::DataReference(reinterpret_cast<const uint8_t*>([resumeData.get() bytes]), [resumeData.get() length]));
+}
+
+void Download::platformInvalidate()
+{
+    ASSERT(m_nsURLDownload);
+    ASSERT(m_delegate);
+
+    [m_delegate.get() invalidate];
+    m_delegate = nullptr;
+    m_nsURLDownload = nullptr;
+}
+
+} // namespace WebKit
+
+@implementation WKDownloadAsDelegate
+
+- (id)initWithDownload:(WebKit::Download*)download
+{
+    self = [super init];
+    if (!self)
+        return nil;
+
+    _download = download;
+    return self;
+}
+
+- (void)invalidate
+{
+    _download = 0;
+}
+
+- (void)downloadDidBegin:(NSURLDownload *)download
+{
+    if (_download)
+        _download->didStart();
+}
+
+- (NSURLRequest *)download:(NSURLDownload *)download willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)redirectResponse
+{
+    return request;
+}
+
+- (BOOL)download:(NSURLDownload *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace
+{
+    // FIXME: Implement.
+    notImplemented();
+    return NO;
+}
+
+- (void)download:(NSURLDownload *)download didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
+{
+    // FIXME: Implement.
+    notImplemented();
+}
+
+- (void)download:(NSURLDownload *)download didCancelAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
+{
+    // FIXME: Implement.
+    notImplemented();
+}
+
+- (BOOL)downloadShouldUseCredentialStorage:(NSURLDownload *)download
+{
+    // FIXME: Implement.
+    notImplemented();
+    return YES;
+}
+
+- (void)download:(NSURLDownload *)download didReceiveResponse:(NSURLResponse *)response
+{
+    if (_download)
+        _download->didReceiveResponse(response);
+}
+
+- (void)download:(NSURLDownload *)download willResumeWithResponse:(NSURLResponse *)response fromByte:(long long)startingByte
+{
+    // FIXME: Implement.
+    notImplemented();
+}
+
+- (void)download:(NSURLDownload *)download didReceiveDataOfLength:(NSUInteger)length
+{
+    if (_download)
+        _download->didReceiveData(length);
+}
+
+- (BOOL)download:(NSURLDownload *)download shouldDecodeSourceDataOfMIMEType:(NSString *)encodingType
+{
+    if (_download)
+        return _download->shouldDecodeSourceDataOfMIMEType(encodingType);
+
+    return YES;
+}
+
+- (void)download:(NSURLDownload *)download decideDestinationWithSuggestedFilename:(NSString *)filename
+{
+    String destination;
+    bool allowOverwrite;
+    if (_download)
+        destination = _download->decideDestinationWithSuggestedFilename(filename, allowOverwrite);
+
+    if (!destination.isNull())
+        [download setDestination:destination allowOverwrite:allowOverwrite];
+}
+
+- (void)download:(NSURLDownload *)download didCreateDestination:(NSString *)path
+{
+    if (_download)
+        _download->didCreateDestination(path);
+}
+
+- (void)downloadDidFinish:(NSURLDownload *)download
+{
+    if (_download)
+        _download->didFinish();
+}
+
+- (void)download:(NSURLDownload *)download didFailWithError:(NSError *)error
+{
+    if (!_download)
+        return;
+
+    RetainPtr<NSData> resumeData = [download resumeData];
+    CoreIPC::DataReference dataReference(reinterpret_cast<const uint8_t*>([resumeData.get() bytes]), [resumeData.get() length]);
+
+    _download->didFail(error, dataReference);
+}
+
+@end
diff --git a/Source/WebKit2/WebProcess/Downloads/qt/DownloadQt.cpp b/Source/WebKit2/WebProcess/Downloads/qt/DownloadQt.cpp
new file mode 100644
index 0000000..34fd60e
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Downloads/qt/DownloadQt.cpp
@@ -0,0 +1,54 @@
+/*
+ * 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 "Download.h"
+
+#include "NotImplemented.h"
+
+using namespace WebCore;
+
+namespace WebKit {
+
+void Download::start(WebPage* initiatingWebPage)
+{
+    notImplemented();
+}
+
+void Download::startWithHandle(WebPage* initiatingPage, ResourceHandle*, const ResourceRequest& initialRequest, const ResourceResponse&)
+{
+    notImplemented();
+}
+
+void Download::cancel()
+{
+    notImplemented();
+}
+
+void Download::platformInvalidate()
+{
+    notImplemented();
+}
+
+} // namespace WebKit