Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 258 insertions, 0 deletions

diff --git a/dom/storage/SessionStorage.cpp b/dom/storage/SessionStorage.cpp
new file mode 100644
index 0000000000..4f13370338
--- /dev/null
+++ b/dom/storage/SessionStorage.cpp
@@ -0,0 +1,258 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "SessionStorage.h"
+
+#include "SessionStorageCache.h"
+#include "SessionStorageManager.h"
+
+#include "mozilla/dom/StorageBinding.h"
+#include "mozilla/Preferences.h"
+#include "nsContentUtils.h"
+#include "nsIPrincipal.h"
+#include "nsPIDOMWindow.h"
+#include "nsThreadUtils.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(SessionStorage, Storage, mManager);
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SessionStorage)
+NS_INTERFACE_MAP_END_INHERITING(Storage)
+
+NS_IMPL_ADDREF_INHERITED(SessionStorage, Storage)
+NS_IMPL_RELEASE_INHERITED(SessionStorage, Storage)
+
+SessionStorage::SessionStorage(nsPIDOMWindowInner* aWindow,
+                               nsIPrincipal* aPrincipal,
+                               nsIPrincipal* aStoragePrincipal,
+                               SessionStorageCache* aCache,
+                               SessionStorageManager* aManager,
+                               const nsAString& aDocumentURI, bool aIsPrivate)
+    : Storage(aWindow, aPrincipal, aStoragePrincipal),
+      mCache(aCache),
+      mManager(aManager),
+      mDocumentURI(aDocumentURI),
+      mIsPrivate(aIsPrivate),
+      mHasPendingStableStateCallback(false) {
+  MOZ_ASSERT(aCache);
+}
+
+SessionStorage::~SessionStorage() = default;
+
+int64_t SessionStorage::GetOriginQuotaUsage() const {
+  nsresult rv = EnsureCacheLoadedOrCloned();
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return 0;
+  }
+
+  return mCache->GetOriginQuotaUsage();
+}
+
+uint32_t SessionStorage::GetLength(nsIPrincipal& aSubjectPrincipal,
+                                   ErrorResult& aRv) {
+  if (!CanUseStorage(aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return 0;
+  }
+
+  nsresult rv = EnsureCacheLoadedOrCloned();
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    aRv.Throw(rv);
+    return 0;
+  }
+
+  return mCache->Length();
+}
+
+void SessionStorage::Key(uint32_t aIndex, nsAString& aResult,
+                         nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
+  if (!CanUseStorage(aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  nsresult rv = EnsureCacheLoadedOrCloned();
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    aRv.Throw(rv);
+    return;
+  }
+
+  mCache->Key(aIndex, aResult);
+}
+
+void SessionStorage::GetItem(const nsAString& aKey, nsAString& aResult,
+                             nsIPrincipal& aSubjectPrincipal,
+                             ErrorResult& aRv) {
+  if (!CanUseStorage(aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  nsresult rv = EnsureCacheLoadedOrCloned();
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    aRv.Throw(rv);
+    return;
+  }
+
+  mCache->GetItem(aKey, aResult);
+}
+
+void SessionStorage::GetSupportedNames(nsTArray<nsString>& aKeys) {
+  if (!CanUseStorage(*nsContentUtils::SubjectPrincipal())) {
+    // return just an empty array
+    aKeys.Clear();
+    return;
+  }
+
+  nsresult rv = EnsureCacheLoadedOrCloned();
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    // return just an empty array
+    aKeys.Clear();
+    return;
+  }
+
+  mCache->GetKeys(aKeys);
+}
+
+void SessionStorage::SetItem(const nsAString& aKey, const nsAString& aValue,
+                             nsIPrincipal& aSubjectPrincipal,
+                             ErrorResult& aRv) {
+  if (!CanUseStorage(aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  nsresult rv = EnsureCacheLoadedOrCloned();
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    aRv.Throw(rv);
+    return;
+  }
+
+  nsString oldValue;
+  rv = mCache->SetItem(aKey, aValue, oldValue);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    aRv.Throw(rv);
+    return;
+  }
+
+  if (rv == NS_SUCCESS_DOM_NO_OPERATION) {
+    return;
+  }
+
+  BroadcastChangeNotification(aKey, oldValue, aValue);
+}
+
+void SessionStorage::RemoveItem(const nsAString& aKey,
+                                nsIPrincipal& aSubjectPrincipal,
+                                ErrorResult& aRv) {
+  if (!CanUseStorage(aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  nsresult rv = EnsureCacheLoadedOrCloned();
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    aRv.Throw(rv);
+    return;
+  }
+
+  nsString oldValue;
+  rv = mCache->RemoveItem(aKey, oldValue);
+  MOZ_ASSERT(NS_SUCCEEDED(rv));
+
+  if (rv == NS_SUCCESS_DOM_NO_OPERATION) {
+    return;
+  }
+
+  BroadcastChangeNotification(aKey, oldValue, VoidString());
+}
+
+void SessionStorage::Clear(nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
+  uint32_t length = GetLength(aSubjectPrincipal, aRv);
+  if (!length) {
+    return;
+  }
+
+  nsresult rv = EnsureCacheLoadedOrCloned();
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    aRv.Throw(rv);
+    return;
+  }
+
+  mCache->Clear();
+  BroadcastChangeNotification(VoidString(), VoidString(), VoidString());
+}
+
+void SessionStorage::BroadcastChangeNotification(const nsAString& aKey,
+                                                 const nsAString& aOldValue,
+                                                 const nsAString& aNewValue) {
+  NotifyChange(this, StoragePrincipal(), aKey, aOldValue, aNewValue,
+               u"sessionStorage", mDocumentURI, mIsPrivate, false);
+
+  // Sync changes on SessionStorageCache at the next statble state.
+  if (mManager->CanLoadData()) {
+    MaybeScheduleStableStateCallback();
+  }
+}
+
+bool SessionStorage::IsForkOf(const Storage* aOther) const {
+  MOZ_ASSERT(aOther);
+  if (aOther->Type() != eSessionStorage) {
+    return false;
+  }
+
+  return mCache == static_cast<const SessionStorage*>(aOther)->mCache;
+}
+
+void SessionStorage::MaybeScheduleStableStateCallback() {
+  AssertIsOnOwningThread();
+
+  if (!mHasPendingStableStateCallback) {
+    nsContentUtils::RunInStableState(
+        NewRunnableMethod("SessionStorage::StableStateCallback", this,
+                          &SessionStorage::StableStateCallback));
+
+    mHasPendingStableStateCallback = true;
+  }
+}
+
+void SessionStorage::StableStateCallback() {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(mHasPendingStableStateCallback);
+  MOZ_ASSERT(mManager);
+  MOZ_ASSERT(mCache);
+
+  mHasPendingStableStateCallback = false;
+
+  if (mManager->CanLoadData()) {
+    mManager->CheckpointData(*StoragePrincipal(), *mCache);
+  }
+}
+
+nsresult SessionStorage::EnsureCacheLoadedOrCloned() const {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(mManager);
+
+  if (!mManager->CanLoadData()) {
+    return NS_OK;
+  }
+
+  // Ensure manager actor.
+  nsresult rv = mManager->EnsureManager();
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  // Ensure cache is loaded or cloned.
+  if (mCache->WasLoadedOrCloned()) {
+    return NS_OK;
+  }
+
+  return mManager->LoadData(*StoragePrincipal(), *mCache);
+}
+
+}  // namespace mozilla::dom