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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /image/ImageCacheKey.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'image/ImageCacheKey.h')
-rw-r--r-- | image/ImageCacheKey.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/image/ImageCacheKey.h b/image/ImageCacheKey.h new file mode 100644 index 0000000000..2be4493081 --- /dev/null +++ b/image/ImageCacheKey.h @@ -0,0 +1,87 @@ +/* -*- 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 |