summaryrefslogtreecommitdiffstats
path: root/Source/WebKit/win/WebDownload.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'Source/WebKit/win/WebDownload.cpp')
-rw-r--r--Source/WebKit/win/WebDownload.cpp164
1 files changed, 2 insertions, 162 deletions
diff --git a/Source/WebKit/win/WebDownload.cpp b/Source/WebKit/win/WebDownload.cpp
index fc72232..45e36cc 100644
--- a/Source/WebKit/win/WebDownload.cpp
+++ b/Source/WebKit/win/WebDownload.cpp
@@ -38,12 +38,9 @@
#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/DownloadBundle.h>
#include <WebCore/NotImplemented.h>
#include <WebCore/ResourceError.h>
#include <WebCore/ResourceHandle.h>
@@ -55,18 +52,6 @@
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()
@@ -165,7 +150,7 @@ HRESULT STDMETHODCALLTYPE WebDownload::bundlePathForTargetPath(
if (bundle[bundle.length()-1] == '/')
bundle.truncate(1);
- bundle += bundleExtension();
+ bundle += DownloadBundle::fileExtension();
*bundlePath = SysAllocStringLen(bundle.characters(), bundle.length());
if (!*bundlePath)
return E_FAIL;
@@ -182,148 +167,3 @@ HRESULT STDMETHODCALLTYPE WebDownload::request(
}
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;
-}