gecko-dev/image/ImageCacheKey.cpp
Andrea Marchesini 8bbeee69cf Bug 1321261 - create dom/file for File APIs, r=qdot
--HG--
rename : dom/base/BlobSet.cpp => dom/file/BlobSet.cpp
rename : dom/base/BlobSet.h => dom/file/BlobSet.h
rename : dom/base/File.cpp => dom/file/File.cpp
rename : dom/base/File.h => dom/file/File.h
rename : dom/base/FileList.cpp => dom/file/FileList.cpp
rename : dom/base/FileList.h => dom/file/FileList.h
rename : dom/base/FileReader.cpp => dom/file/FileReader.cpp
rename : dom/base/FileReader.h => dom/file/FileReader.h
rename : dom/base/MultipartBlobImpl.cpp => dom/file/MultipartBlobImpl.cpp
rename : dom/base/MultipartBlobImpl.h => dom/file/MultipartBlobImpl.h
rename : dom/base/MutableBlobStorage.cpp => dom/file/MutableBlobStorage.cpp
rename : dom/base/MutableBlobStorage.h => dom/file/MutableBlobStorage.h
rename : dom/base/MutableBlobStreamListener.cpp => dom/file/MutableBlobStreamListener.cpp
rename : dom/base/MutableBlobStreamListener.h => dom/file/MutableBlobStreamListener.h
rename : dom/ipc/Blob.cpp => dom/file/ipc/Blob.cpp
rename : dom/ipc/BlobChild.h => dom/file/ipc/BlobChild.h
rename : dom/ipc/BlobParent.h => dom/file/ipc/BlobParent.h
rename : dom/ipc/BlobTypes.ipdlh => dom/file/ipc/BlobTypes.ipdlh
rename : dom/ipc/PBlob.ipdl => dom/file/ipc/PBlob.ipdl
rename : dom/ipc/PBlobStream.ipdl => dom/file/ipc/PBlobStream.ipdl
rename : dom/ipc/nsIRemoteBlob.h => dom/file/ipc/nsIRemoteBlob.h
rename : dom/base/nsHostObjectProtocolHandler.cpp => dom/file/nsHostObjectProtocolHandler.cpp
rename : dom/base/nsHostObjectProtocolHandler.h => dom/file/nsHostObjectProtocolHandler.h
rename : dom/base/nsHostObjectURI.cpp => dom/file/nsHostObjectURI.cpp
rename : dom/base/nsHostObjectURI.h => dom/file/nsHostObjectURI.h
rename : dom/base/nsIDOMBlob.idl => dom/file/nsIDOMBlob.idl
rename : dom/base/nsIDOMFileList.idl => dom/file/nsIDOMFileList.idl
rename : dom/base/test/create_file_objects.js => dom/file/tests/create_file_objects.js
rename : dom/base/test/file_blobURL_expiring.html => dom/file/tests/file_blobURL_expiring.html
rename : dom/base/test/file_mozfiledataurl_audio.ogg => dom/file/tests/file_mozfiledataurl_audio.ogg
rename : dom/base/test/file_mozfiledataurl_doc.html => dom/file/tests/file_mozfiledataurl_doc.html
rename : dom/base/test/file_mozfiledataurl_img.jpg => dom/file/tests/file_mozfiledataurl_img.jpg
rename : dom/base/test/file_mozfiledataurl_inner.html => dom/file/tests/file_mozfiledataurl_inner.html
rename : dom/base/test/file_mozfiledataurl_text.txt => dom/file/tests/file_mozfiledataurl_text.txt
rename : dom/base/test/file_nonascii_blob_url.html => dom/file/tests/file_nonascii_blob_url.html
rename : dom/base/test/fileapi_chromeScript.js => dom/file/tests/fileapi_chromeScript.js
rename : dom/base/test/fileutils.js => dom/file/tests/fileutils.js
rename : dom/base/test/test_blobURL_expiring.html => dom/file/tests/test_blobURL_expiring.html
rename : dom/base/test/test_blob_fragment_and_query.html => dom/file/tests/test_blob_fragment_and_query.html
rename : dom/base/test/test_blobconstructor.html => dom/file/tests/test_blobconstructor.html
rename : dom/base/test/test_file_from_blob.html => dom/file/tests/test_file_from_blob.html
rename : dom/base/test/test_file_negative_date.html => dom/file/tests/test_file_negative_date.html
rename : dom/base/test/test_fileapi.html => dom/file/tests/test_fileapi.html
rename : dom/base/test/test_fileapi_slice.html => dom/file/tests/test_fileapi_slice.html
rename : dom/base/test/test_ipc_messagemanager_blob.html => dom/file/tests/test_ipc_messagemanager_blob.html
rename : dom/base/test/test_mozfiledataurl.html => dom/file/tests/test_mozfiledataurl.html
rename : dom/base/test/test_nonascii_blob_url.html => dom/file/tests/test_nonascii_blob_url.html
2016-12-01 15:12:42 +01:00

168 lines
4.7 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ImageCacheKey.h"
#include "mozilla/Move.h"
#include "ImageURL.h"
#include "nsHostObjectProtocolHandler.h"
#include "nsString.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/workers/ServiceWorkerManager.h"
#include "nsIDocument.h"
#include "nsPrintfCString.h"
namespace mozilla {
using namespace dom;
namespace image {
bool
URISchemeIs(ImageURL* aURI, const char* aScheme)
{
bool schemeMatches = false;
if (NS_WARN_IF(NS_FAILED(aURI->SchemeIs(aScheme, &schemeMatches)))) {
return false;
}
return schemeMatches;
}
static Maybe<uint64_t>
BlobSerial(ImageURL* aURI)
{
nsAutoCString spec;
aURI->GetSpec(spec);
RefPtr<BlobImpl> blob;
if (NS_SUCCEEDED(NS_GetBlobForBlobURISpec(spec, getter_AddRefs(blob))) &&
blob) {
return Some(blob->GetSerialNumber());
}
return Nothing();
}
ImageCacheKey::ImageCacheKey(nsIURI* aURI,
const PrincipalOriginAttributes& aAttrs,
nsIDocument* aDocument,
nsresult& aRv)
: mURI(new ImageURL(aURI, aRv))
, mOriginAttributes(aAttrs)
, mControlledDocument(GetControlledDocumentToken(aDocument))
, mIsChrome(URISchemeIs(mURI, "chrome"))
{
NS_ENSURE_SUCCESS_VOID(aRv);
MOZ_ASSERT(NS_IsMainThread());
if (URISchemeIs(mURI, "blob")) {
mBlobSerial = BlobSerial(mURI);
}
mHash = ComputeHash(mURI, mBlobSerial, mOriginAttributes, mControlledDocument);
}
ImageCacheKey::ImageCacheKey(ImageURL* aURI,
const PrincipalOriginAttributes& aAttrs,
nsIDocument* aDocument)
: mURI(aURI)
, mOriginAttributes(aAttrs)
, mControlledDocument(GetControlledDocumentToken(aDocument))
, mIsChrome(URISchemeIs(mURI, "chrome"))
{
MOZ_ASSERT(aURI);
if (URISchemeIs(mURI, "blob")) {
mBlobSerial = BlobSerial(mURI);
}
mHash = ComputeHash(mURI, mBlobSerial, mOriginAttributes, mControlledDocument);
}
ImageCacheKey::ImageCacheKey(const ImageCacheKey& aOther)
: mURI(aOther.mURI)
, mBlobSerial(aOther.mBlobSerial)
, mOriginAttributes(aOther.mOriginAttributes)
, mControlledDocument(aOther.mControlledDocument)
, mHash(aOther.mHash)
, mIsChrome(aOther.mIsChrome)
{ }
ImageCacheKey::ImageCacheKey(ImageCacheKey&& aOther)
: mURI(Move(aOther.mURI))
, mBlobSerial(Move(aOther.mBlobSerial))
, mOriginAttributes(aOther.mOriginAttributes)
, mControlledDocument(aOther.mControlledDocument)
, mHash(aOther.mHash)
, mIsChrome(aOther.mIsChrome)
{ }
bool
ImageCacheKey::operator==(const ImageCacheKey& aOther) const
{
// Don't share the image cache between a controlled document and anything else.
if (mControlledDocument != aOther.mControlledDocument) {
return false;
}
// The origin attributes always have to match.
if (mOriginAttributes != aOther.mOriginAttributes) {
return false;
}
if (mBlobSerial || aOther.mBlobSerial) {
// If at least one of us has a blob serial, just compare the blob serial and
// the ref portion of the URIs.
return mBlobSerial == aOther.mBlobSerial &&
mURI->HasSameRef(*aOther.mURI);
}
// For non-blob URIs, compare the URIs.
return *mURI == *aOther.mURI;
}
const char*
ImageCacheKey::Spec() const
{
return mURI->Spec();
}
/* static */ uint32_t
ImageCacheKey::ComputeHash(ImageURL* aURI,
const Maybe<uint64_t>& aBlobSerial,
const PrincipalOriginAttributes& aAttrs,
void* aControlledDocument)
{
// Since we frequently call Hash() several times in a row on the same
// ImageCacheKey, as an optimization we compute our hash once and store it.
nsPrintfCString ptr("%p", aControlledDocument);
nsAutoCString suffix;
aAttrs.CreateSuffix(suffix);
return AddToHash(0, aURI->ComputeHash(aBlobSerial),
HashString(suffix), HashString(ptr));
}
/* static */ void*
ImageCacheKey::GetControlledDocumentToken(nsIDocument* aDocument)
{
// For non-controlled documents, we just return null. For controlled
// documents, we cast the pointer into a void* to avoid dereferencing
// it (since we only use it for comparisons), and return it.
void* pointer = nullptr;
using dom::workers::ServiceWorkerManager;
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (aDocument && swm) {
ErrorResult rv;
if (swm->IsControlled(aDocument, rv)) {
pointer = aDocument;
}
}
return pointer;
}
} // namespace image
} // namespace mozilla