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6fead881af
It's been on for years, there's no point in keeping the old code-paths. Differential Revision: https://phabricator.services.mozilla.com/D241760
129 lines
3.9 KiB
C++
129 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ImageCacheKey.h"
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#include <utility>
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#include "mozilla/AntiTrackingUtils.h"
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#include "mozilla/HashFunctions.h"
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#include "mozilla/StorageAccess.h"
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#include "mozilla/StoragePrincipalHelper.h"
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#include "mozilla/Unused.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/ServiceWorkerManager.h"
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#include "mozilla/StaticPrefs_privacy.h"
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#include "mozilla/StorageAccess.h"
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#include "nsContentUtils.h"
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#include "nsHashKeys.h"
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#include "nsLayoutUtils.h"
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namespace mozilla {
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using namespace dom;
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namespace image {
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static nsIPrincipal* GetLoaderPrincipal(Document* aDocument) {
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return aDocument ? aDocument->NodePrincipal()
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: nsContentUtils::GetSystemPrincipal();
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}
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static nsIPrincipal* GetPartitionPrincipal(Document* aDocument) {
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return aDocument ? aDocument->PartitionedPrincipal()
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: nsContentUtils::GetSystemPrincipal();
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}
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ImageCacheKey::ImageCacheKey(nsIURI* aURI, CORSMode aCORSMode,
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Document* aDocument)
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: mURI(aURI),
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mControlledDocument(GetSpecialCaseDocumentToken(aDocument)),
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mLoaderPrincipal(GetLoaderPrincipal(aDocument)),
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mPartitionPrincipal(GetPartitionPrincipal(aDocument)),
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mCORSMode(aCORSMode),
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mAppType(GetAppType(aDocument)) {
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MOZ_ASSERT(mLoaderPrincipal);
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MOZ_ASSERT(mPartitionPrincipal);
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}
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ImageCacheKey::ImageCacheKey(const ImageCacheKey& aOther) = default;
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ImageCacheKey::ImageCacheKey(ImageCacheKey&& aOther) = default;
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bool ImageCacheKey::operator==(const ImageCacheKey& aOther) const {
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// Don't share the image cache between a controlled document and anything
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// else.
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if (mControlledDocument != aOther.mControlledDocument) {
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return false;
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}
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if (!mPartitionPrincipal->Equals(aOther.mPartitionPrincipal)) {
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return false;
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}
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if (mCORSMode != aOther.mCORSMode) {
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return false;
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}
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// Don't share the image cache between two different appTypes
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if (mAppType != aOther.mAppType) {
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return false;
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}
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// For non-blob URIs, compare the URIs.
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bool equals = false;
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nsresult rv = mURI->Equals(aOther.mURI, &equals);
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return NS_SUCCEEDED(rv) && equals;
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}
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void ImageCacheKey::EnsureHash() const {
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MOZ_ASSERT(mHash.isNothing());
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// NOTE(emilio): Not adding the partition principal to the hash, since it
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// can mutate (see bug 1955775).
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nsAutoCString spec;
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Unused << mURI->GetSpec(spec);
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mHash.emplace(
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AddToHash(HashString(spec), mControlledDocument, mAppType, mCORSMode));
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}
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/* static */
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void* ImageCacheKey::GetSpecialCaseDocumentToken(Document* aDocument) {
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// Cookie-averse documents can never have storage granted to them. Since they
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// may not have inner windows, they would require special handling below, so
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// just bail out early here.
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if (!aDocument || aDocument->IsCookieAverse()) {
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return nullptr;
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}
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// For controlled documents, we cast the pointer into a void* to avoid
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// dereferencing it (since we only use it for comparisons).
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RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
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if (swm && aDocument->GetController().isSome()) {
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return aDocument;
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}
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return nullptr;
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}
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/* static */
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nsIDocShell::AppType ImageCacheKey::GetAppType(Document* aDocument) {
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if (!aDocument) {
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return nsIDocShell::APP_TYPE_UNKNOWN;
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}
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nsCOMPtr<nsIDocShellTreeItem> dsti = aDocument->GetDocShell();
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if (!dsti) {
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return nsIDocShell::APP_TYPE_UNKNOWN;
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}
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nsCOMPtr<nsIDocShellTreeItem> root;
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dsti->GetInProcessRootTreeItem(getter_AddRefs(root));
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if (nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(root)) {
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return docShell->GetAppType();
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}
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return nsIDocShell::APP_TYPE_UNKNOWN;
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}
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} // namespace image
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} // namespace mozilla
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