forked from mirrors/gecko-dev
7d479f6a4a
So that we can hold entries loaded with different CORS modes, such as masks and backgrounds. Differential Revision: https://phabricator.services.mozilla.com/D177759
87 lines
2.6 KiB
C++
87 lines
2.6 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/. */
|
|
|
|
/**
|
|
* ImageCacheKey is the key type for the image cache (see imgLoader.h).
|
|
*/
|
|
|
|
#ifndef mozilla_image_src_ImageCacheKey_h
|
|
#define mozilla_image_src_ImageCacheKey_h
|
|
|
|
#include "mozilla/BasePrincipal.h"
|
|
#include "mozilla/Maybe.h"
|
|
#include "mozilla/RefPtr.h"
|
|
#include "PLDHashTable.h"
|
|
|
|
class nsIURI;
|
|
|
|
namespace mozilla {
|
|
|
|
enum CORSMode : uint8_t;
|
|
|
|
namespace image {
|
|
|
|
/**
|
|
* An ImageLib cache entry key.
|
|
*
|
|
* We key the cache on the initial URI (before any redirects), with some
|
|
* canonicalization applied. See ComputeHash() for the details.
|
|
* Controlled documents do not share their cache entries with
|
|
* non-controlled documents, or other controlled documents.
|
|
*/
|
|
class ImageCacheKey final {
|
|
public:
|
|
ImageCacheKey(nsIURI*, CORSMode, const OriginAttributes&, dom::Document*);
|
|
|
|
ImageCacheKey(const ImageCacheKey& aOther);
|
|
ImageCacheKey(ImageCacheKey&& aOther);
|
|
|
|
bool operator==(const ImageCacheKey& aOther) const;
|
|
PLDHashNumber Hash() const {
|
|
if (MOZ_UNLIKELY(mHash.isNothing())) {
|
|
EnsureHash();
|
|
}
|
|
return mHash.value();
|
|
}
|
|
|
|
/// A weak pointer to the URI.
|
|
nsIURI* URI() const { return mURI; }
|
|
|
|
CORSMode GetCORSMode() const { return mCORSMode; }
|
|
|
|
const OriginAttributes& OriginAttributesRef() const {
|
|
return mOriginAttributes;
|
|
}
|
|
|
|
const nsCString& IsolationKeyRef() const { return mIsolationKey; }
|
|
|
|
/// A token indicating which service worker controlled document this entry
|
|
/// belongs to, if any.
|
|
void* ControlledDocument() const { return mControlledDocument; }
|
|
|
|
private:
|
|
// For ServiceWorker we need to use the document as
|
|
// token for the key. All those exceptions are handled by this method.
|
|
static void* GetSpecialCaseDocumentToken(dom::Document* aDocument);
|
|
|
|
// For anti-tracking we need to use an isolation key. It can be the suffix of
|
|
// the PatitionedPrincipal (see StoragePrincipalHelper.h) or the top-level
|
|
// document's base domain. This is handled by this method.
|
|
static nsCString GetIsolationKey(dom::Document* aDocument, nsIURI* aURI);
|
|
|
|
void EnsureHash() const;
|
|
|
|
nsCOMPtr<nsIURI> mURI;
|
|
const OriginAttributes mOriginAttributes;
|
|
void* mControlledDocument;
|
|
nsCString mIsolationKey;
|
|
mutable Maybe<PLDHashNumber> mHash;
|
|
const CORSMode mCORSMode;
|
|
};
|
|
|
|
} // namespace image
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_image_src_ImageCacheKey_h
|