gecko-dev/image/ImageCacheKey.cpp

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/* -*- 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/HashFunctions.h"
#include "mozilla/Move.h"
#include "mozilla/Unused.h"
#include "nsContentUtils.h"
#include "nsICookieService.h"
#include "nsLayoutUtils.h"
#include "nsString.h"
#include "mozilla/AntiTrackingCommon.h"
#include "mozilla/HashFunctions.h"
#include "mozilla/StorageAccess.h"
#include "mozilla/dom/BlobURLProtocolHandler.h"
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 17:12:42 +03:00
#include "mozilla/dom/File.h"
#include "mozilla/dom/ServiceWorkerManager.h"
#include "mozilla/dom/Document.h"
#include "nsHashKeys.h"
#include "nsPrintfCString.h"
namespace mozilla {
using namespace dom;
namespace image {
static Maybe<uint64_t> BlobSerial(nsIURI* aURI) {
nsAutoCString spec;
aURI->GetSpec(spec);
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 08:24:48 +03:00
RefPtr<BlobImpl> blob;
if (NS_SUCCEEDED(NS_GetBlobForBlobURISpec(spec, getter_AddRefs(blob))) &&
blob) {
return Some(blob->GetSerialNumber());
}
return Nothing();
}
ImageCacheKey::ImageCacheKey(nsIURI* aURI, const OriginAttributes& aAttrs,
Document* aDocument)
: mURI(aURI),
mOriginAttributes(aAttrs),
mControlledDocument(GetSpecialCaseDocumentToken(aDocument, aURI)),
mTopLevelBaseDomain(GetTopLevelBaseDomain(aDocument, aURI)),
mIsChrome(false) {
if (SchemeIs("blob")) {
mBlobSerial = BlobSerial(mURI);
} else if (SchemeIs("chrome")) {
mIsChrome = true;
}
}
ImageCacheKey::ImageCacheKey(const ImageCacheKey& aOther)
: mURI(aOther.mURI),
mBlobSerial(aOther.mBlobSerial),
mBlobRef(aOther.mBlobRef),
mOriginAttributes(aOther.mOriginAttributes),
mControlledDocument(aOther.mControlledDocument),
mTopLevelBaseDomain(aOther.mTopLevelBaseDomain),
mHash(aOther.mHash),
mIsChrome(aOther.mIsChrome) {}
ImageCacheKey::ImageCacheKey(ImageCacheKey&& aOther)
: mURI(std::move(aOther.mURI)),
mBlobSerial(std::move(aOther.mBlobSerial)),
mBlobRef(std::move(aOther.mBlobRef)),
mOriginAttributes(aOther.mOriginAttributes),
mControlledDocument(aOther.mControlledDocument),
mTopLevelBaseDomain(aOther.mTopLevelBaseDomain),
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;
}
// Don't share the image cache between two top-level documents of different
// base domains.
if (!mTopLevelBaseDomain.Equals(aOther.mTopLevelBaseDomain,
nsCaseInsensitiveCStringComparator())) {
return false;
}
// The origin attributes always have to match.
if (mOriginAttributes != aOther.mOriginAttributes) {
return false;
}
if (mBlobSerial || aOther.mBlobSerial) {
if (mBlobSerial && mBlobRef.IsEmpty()) {
EnsureBlobRef();
}
if (aOther.mBlobSerial && aOther.mBlobRef.IsEmpty()) {
aOther.EnsureBlobRef();
}
// 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 && mBlobRef == aOther.mBlobRef;
}
// For non-blob URIs, compare the URIs.
bool equals = false;
nsresult rv = mURI->Equals(aOther.mURI, &equals);
return NS_SUCCEEDED(rv) && equals;
}
void ImageCacheKey::EnsureBlobRef() const {
MOZ_ASSERT(mBlobSerial);
MOZ_ASSERT(mBlobRef.IsEmpty());
nsresult rv = mURI->GetRef(mBlobRef);
NS_ENSURE_SUCCESS_VOID(rv);
}
void ImageCacheKey::EnsureHash() const {
MOZ_ASSERT(mHash.isNothing());
PLDHashNumber hash = 0;
// 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", mControlledDocument);
nsAutoCString suffix;
mOriginAttributes.CreateSuffix(suffix);
if (mBlobSerial) {
if (mBlobRef.IsEmpty()) {
EnsureBlobRef();
}
hash = HashGeneric(*mBlobSerial, HashString(mBlobRef));
} else {
nsAutoCString spec;
Unused << mURI->GetSpec(spec);
hash = HashString(spec);
}
hash = AddToHash(hash, HashString(suffix), HashString(mTopLevelBaseDomain),
HashString(ptr));
mHash.emplace(hash);
}
bool ImageCacheKey::SchemeIs(const char* aScheme) {
bool matches = false;
return NS_SUCCEEDED(mURI->SchemeIs(aScheme, &matches)) && matches;
}
/* static */
void* ImageCacheKey::GetSpecialCaseDocumentToken(Document* aDocument,
nsIURI* aURI) {
// Cookie-averse documents can never have storage granted to them. Since they
// may not have inner windows, they would require special handling below, so
// just bail out early here.
if (!aDocument || aDocument->IsCookieAverse()) {
return nullptr;
}
// For controlled documents, we cast the pointer into a void* to avoid
// dereferencing it (since we only use it for comparisons).
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (swm && aDocument->GetController().isSome()) {
return aDocument;
}
return nullptr;
}
/* static */
nsCString ImageCacheKey::GetTopLevelBaseDomain(Document* aDocument,
nsIURI* aURI) {
if (!aDocument || !aDocument->GetInnerWindow()) {
return EmptyCString();
}
// If the window is 3rd party resource, let's see if first-party storage
// access is granted for this image.
if (nsContentUtils::IsThirdPartyTrackingResourceWindow(
aDocument->GetInnerWindow())) {
return StorageDisabledByAntiTracking(aDocument, aURI)
? aDocument->GetBaseDomain()
: EmptyCString();
}
// Another scenario is if this image is a 3rd party resource loaded by a
// first party context. In this case, we should check if the nsIChannel has
// been marked as tracking resource, but we don't have the channel yet at
// this point. The best approach here is to be conservative: if we are sure
// that the permission is granted, let's return 0. Otherwise, let's make a
// unique image cache per the top-level document eTLD+1.
if (!AntiTrackingCommon::MaybeIsFirstPartyStorageAccessGrantedFor(
aDocument->GetInnerWindow(), aURI)) {
nsPIDOMWindowOuter* top = aDocument->GetInnerWindow()->GetScriptableTop();
nsPIDOMWindowInner* topInner = top->GetCurrentInnerWindow();
if (!topInner) {
return aDocument
->GetBaseDomain(); // because we don't have anything better!
}
return topInner->GetExtantDoc() ? topInner->GetExtantDoc()->GetBaseDomain()
: EmptyCString();
}
return EmptyCString();
}
} // namespace image
} // namespace mozilla