Merge WebKit at r75993: Initial merge by git.

Change-Id: I602bbdc3974787a3b0450456a30a7868286921c3

1 files changed, 329 insertions, 0 deletions

diff --git a/Source/WebKit/win/WebDownload.cpp b/Source/WebKit/win/WebDownload.cpp
new file mode 100644
index 0000000..fc72232
--- /dev/null
+++ b/Source/WebKit/win/WebDownload.cpp
@@ -0,0 +1,329 @@
+/*
+ * Copyright (C) 2007 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 COMPUTER, INC. ``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 COMPUTER, INC. OR
+ * 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 "WebKitDLL.h"
+#include "WebDownload.h"
+
+#include "DefaultDownloadDelegate.h"
+#include "MarshallingHelpers.h"
+#include "WebError.h"
+#include "WebKit.h"
+#include "WebKitLogging.h"
+#include "WebMutableURLRequest.h"
+#include "WebURLAuthenticationChallenge.h"
+#include "WebURLCredential.h"
+#include "WebURLResponse.h"
+#include <wtf/text/CString.h>
+
+#include <io.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#pragma warning(push, 0)
+#include <WebCore/BString.h>
+#include <WebCore/NotImplemented.h>
+#include <WebCore/ResourceError.h>
+#include <WebCore/ResourceHandle.h>
+#include <WebCore/ResourceRequest.h>
+#include <WebCore/ResourceResponse.h>
+#include <wtf/CurrentTime.h>
+#include <wtf/StdLibExtras.h>
+#pragma warning(pop)
+
+using namespace WebCore;
+
+// Download Bundle file utilities ----------------------------------------------------------------
+const String& WebDownload::bundleExtension()
+{
+   DEFINE_STATIC_LOCAL(const String, bundleExtension, (".download"));
+   return bundleExtension;
+}
+
+UInt32 WebDownload::bundleMagicNumber()
+{
+   return 0xDECAF4EA;
+}
+
+// WebDownload ----------------------------------------------------------------
+
+WebDownload::WebDownload()
+    : m_refCount(0)
+{
+    gClassCount++;
+    gClassNameCount.add("WebDownload");
+}
+
+WebDownload::~WebDownload()
+{
+    LOG(Download, "WebDownload - Destroying download (%p)", this);
+    cancel();
+    gClassCount--;
+    gClassNameCount.remove("WebDownload");
+}
+
+WebDownload* WebDownload::createInstance()
+{
+    WebDownload* instance = new WebDownload();
+    instance->AddRef();
+    return instance;
+}
+
+WebDownload* WebDownload::createInstance(ResourceHandle* handle, const ResourceRequest& request, const ResourceResponse& response, IWebDownloadDelegate* delegate)
+{
+    WebDownload* instance = new WebDownload();
+    instance->AddRef();
+    instance->init(handle, request, response, delegate);
+    return instance;
+}
+
+WebDownload* WebDownload::createInstance(const KURL& url, IWebDownloadDelegate* delegate)
+{
+    WebDownload* instance = new WebDownload();
+    instance->AddRef();
+    instance->init(url, delegate);
+    return instance;
+}
+
+// IUnknown -------------------------------------------------------------------
+
+HRESULT STDMETHODCALLTYPE WebDownload::QueryInterface(REFIID riid, void** ppvObject)
+{
+    *ppvObject = 0;
+    if (IsEqualGUID(riid, IID_IUnknown))
+        *ppvObject = static_cast<IWebDownload*>(this);
+    else if (IsEqualGUID(riid, IID_IWebDownload))
+        *ppvObject = static_cast<IWebDownload*>(this);
+    else if (IsEqualGUID(riid, IID_IWebURLAuthenticationChallengeSender))
+        *ppvObject = static_cast<IWebURLAuthenticationChallengeSender*>(this);
+    else if (IsEqualGUID(riid, CLSID_WebDownload))
+        *ppvObject = static_cast<WebDownload*>(this);
+    else
+        return E_NOINTERFACE;
+
+    AddRef();
+    return S_OK;
+}
+
+ULONG STDMETHODCALLTYPE WebDownload::AddRef(void)
+{
+    return ++m_refCount;
+}
+
+ULONG STDMETHODCALLTYPE WebDownload::Release(void)
+{
+    ULONG newRef = --m_refCount;
+    if (!newRef)
+        delete(this);
+
+    return newRef;
+}
+
+// IWebDownload -------------------------------------------------------------------
+
+HRESULT STDMETHODCALLTYPE WebDownload::canResumeDownloadDecodedWithEncodingMIMEType(
+        /* [in] */ BSTR, 
+        /* [out, retval] */ BOOL*)
+{
+    notImplemented();
+    return E_FAIL;
+}
+
+HRESULT STDMETHODCALLTYPE WebDownload::bundlePathForTargetPath(
+        /* [in] */ BSTR targetPath, 
+        /* [out, retval] */ BSTR* bundlePath)
+{
+    if (!targetPath)
+        return E_INVALIDARG;
+
+    String bundle(targetPath, SysStringLen(targetPath));
+    if (bundle.isEmpty())
+        return E_INVALIDARG;
+
+    if (bundle[bundle.length()-1] == '/')
+        bundle.truncate(1);
+
+    bundle += bundleExtension();
+    *bundlePath = SysAllocStringLen(bundle.characters(), bundle.length());
+    if (!*bundlePath)
+       return E_FAIL;
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebDownload::request(
+        /* [out, retval] */ IWebURLRequest** request)
+{
+    if (request) {
+        *request = m_request.get();
+        if (*request)
+            (*request)->AddRef();
+    }
+    return S_OK;
+}
+
+// Download Bundle file utilities ----------------------------------------------------------------
+
+CFDataRef WebDownload::extractResumeDataFromBundle(const String& bundlePath)
+{
+    if (bundlePath.isEmpty()) {
+        LOG_ERROR("Cannot create resume data from empty download bundle path");
+        return 0;
+    }
+    
+    // Open a handle to the bundle file
+    String nullifiedPath = bundlePath;
+    FILE* bundle = 0;
+    if (_wfopen_s(&bundle, nullifiedPath.charactersWithNullTermination(), TEXT("r+b")) || !bundle) {
+        LOG_ERROR("Failed to open file %s to get resume data", bundlePath.ascii().data());
+        return 0;
+    }
+
+    CFDataRef result = 0;
+    Vector<UInt8> footerBuffer;
+    
+    // Stat the file to get its size
+    struct _stat64 fileStat;
+    if (_fstat64(_fileno(bundle), &fileStat))
+        goto exit;
+    
+    // Check for the bundle magic number at the end of the file
+    fpos_t footerMagicNumberPosition = fileStat.st_size - 4;
+    ASSERT(footerMagicNumberPosition >= 0);
+    if (footerMagicNumberPosition < 0)
+        goto exit;
+    if (fsetpos(bundle, &footerMagicNumberPosition))
+        goto exit;
+
+    UInt32 footerMagicNumber = 0;
+    if (fread(&footerMagicNumber, 4, 1, bundle) != 1) {
+        LOG_ERROR("Failed to read footer magic number from the bundle - errno(%i)", errno);  
+        goto exit;
+    }
+
+    if (footerMagicNumber != bundleMagicNumber()) {
+        LOG_ERROR("Footer's magic number does not match 0x%X - errno(%i)", bundleMagicNumber(), errno);  
+        goto exit;
+    }
+
+    // Now we're *reasonably* sure this is a .download bundle we actually wrote. 
+    // Get the length of the resume data
+    fpos_t footerLengthPosition = fileStat.st_size - 8;
+    ASSERT(footerLengthPosition >= 0);
+    if (footerLengthPosition < 0)
+        goto exit;
+
+    if (fsetpos(bundle, &footerLengthPosition))
+        goto exit;
+
+    UInt32 footerLength = 0;
+    if (fread(&footerLength, 4, 1, bundle) != 1) {
+        LOG_ERROR("Failed to read ResumeData length from the bundle - errno(%i)", errno);  
+        goto exit;
+    }
+
+    // Make sure theres enough bytes to read in for the resume data, and perform the read
+    fpos_t footerStartPosition = fileStat.st_size - 8 - footerLength;
+    ASSERT(footerStartPosition >= 0);
+    if (footerStartPosition < 0)
+        goto exit;
+    if (fsetpos(bundle, &footerStartPosition))
+        goto exit;
+
+    footerBuffer.resize(footerLength);
+    if (fread(footerBuffer.data(), 1, footerLength, bundle) != footerLength) {
+        LOG_ERROR("Failed to read ResumeData from the bundle - errno(%i)", errno);  
+        goto exit;
+    }
+
+    // CFURLDownload will seek to the appropriate place in the file (before our footer) and start overwriting from there
+    // However, say we were within a few hundred bytes of the end of a download when it was paused -
+    // The additional footer extended the length of the file beyond its final length, and there will be junk data leftover
+    // at the end.  Therefore, now that we've retrieved the footer data, we need to truncate it.
+    if (errno_t resizeError = _chsize_s(_fileno(bundle), footerStartPosition)) {
+        LOG_ERROR("Failed to truncate the resume footer off the end of the file - errno(%i)", resizeError);
+        goto exit;
+    }
+
+    // Finally, make the resume data.  Now, it is possible by some twist of fate the bundle magic number
+    // was naturally at the end of the file and its not actually a valid bundle.  That, or someone engineered
+    // it that way to try to attack us.  In that cause, this CFData will successfully create but when we 
+    // actually try to start the CFURLDownload using this bogus data, it will fail and we will handle that gracefully
+    result = CFDataCreate(0, footerBuffer.data(), footerLength);
+exit:
+    fclose(bundle);
+    return result;
+}
+
+HRESULT WebDownload::appendResumeDataToBundle(CFDataRef resumeData, const String& bundlePath)
+{
+    if (!resumeData) {
+        LOG_ERROR("Invalid resume data to write to bundle path");
+        return E_FAIL;
+    }
+    if (bundlePath.isEmpty()) {
+        LOG_ERROR("Cannot write resume data to empty download bundle path");
+        return E_FAIL;
+    }
+
+    String nullifiedPath = bundlePath;
+    FILE* bundle = 0;
+    if (_wfopen_s(&bundle, nullifiedPath.charactersWithNullTermination(), TEXT("ab")) || !bundle) {
+        LOG_ERROR("Failed to open file %s to append resume data", bundlePath.ascii().data());
+        return E_FAIL;
+    }
+
+    HRESULT hr = E_FAIL;
+
+    const UInt8* resumeBytes = CFDataGetBytePtr(resumeData);
+    ASSERT(resumeBytes);
+    if (!resumeBytes)
+        goto exit;
+
+    UInt32 resumeLength = CFDataGetLength(resumeData);
+    ASSERT(resumeLength > 0);
+    if (resumeLength < 1)
+        goto exit;
+
+    if (fwrite(resumeBytes, 1, resumeLength, bundle) != resumeLength) {
+        LOG_ERROR("Failed to write resume data to the bundle - errno(%i)", errno);
+        goto exit;
+    }
+
+    if (fwrite(&resumeLength, 4, 1, bundle) != 1) {
+        LOG_ERROR("Failed to write footer length to the bundle - errno(%i)", errno);
+        goto exit;
+    }
+
+    const UInt32& magic = bundleMagicNumber();
+    if (fwrite(&magic, 4, 1, bundle) != 1) {
+        LOG_ERROR("Failed to write footer magic number to the bundle - errno(%i)", errno);
+        goto exit;
+    }
+    
+    hr = S_OK;
+exit:
+    fclose(bundle);
+    return hr;
+}