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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/storage/DOMStorage.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/storage/DOMStorage.cpp')
-rw-r--r--dom/storage/DOMStorage.cpp301
1 files changed, 301 insertions, 0 deletions
diff --git a/dom/storage/DOMStorage.cpp b/dom/storage/DOMStorage.cpp
new file mode 100644
index 000000000..026959dce
--- /dev/null
+++ b/dom/storage/DOMStorage.cpp
@@ -0,0 +1,301 @@
+/* -*- 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 "DOMStorage.h"
+#include "DOMStorageCache.h"
+#include "DOMStorageManager.h"
+
+#include "nsIObserverService.h"
+#include "nsIScriptSecurityManager.h"
+#include "nsIPermissionManager.h"
+#include "nsIPrincipal.h"
+#include "nsICookiePermission.h"
+#include "nsPIDOMWindow.h"
+
+#include "mozilla/dom/StorageBinding.h"
+#include "mozilla/dom/StorageEvent.h"
+#include "mozilla/dom/StorageEventBinding.h"
+#include "mozilla/Services.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/EnumSet.h"
+#include "nsThreadUtils.h"
+#include "nsContentUtils.h"
+#include "nsServiceManagerUtils.h"
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMStorage, mManager, mPrincipal, mWindow)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMStorage)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMStorage)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMStorage)
+ NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+ NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMStorage)
+ NS_INTERFACE_MAP_ENTRY(nsIDOMStorage)
+ NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
+NS_INTERFACE_MAP_END
+
+DOMStorage::DOMStorage(nsPIDOMWindowInner* aWindow,
+ DOMStorageManager* aManager,
+ DOMStorageCache* aCache,
+ const nsAString& aDocumentURI,
+ nsIPrincipal* aPrincipal,
+ bool aIsPrivate)
+: mWindow(aWindow)
+, mManager(aManager)
+, mCache(aCache)
+, mDocumentURI(aDocumentURI)
+, mPrincipal(aPrincipal)
+, mIsPrivate(aIsPrivate)
+, mIsSessionOnly(false)
+{
+ mCache->Preload();
+}
+
+DOMStorage::~DOMStorage()
+{
+ mCache->KeepAlive();
+}
+
+/* virtual */ JSObject*
+DOMStorage::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+ return StorageBinding::Wrap(aCx, this, aGivenProto);
+}
+
+uint32_t
+DOMStorage::GetLength(nsIPrincipal& aSubjectPrincipal,
+ ErrorResult& aRv)
+{
+ if (!CanUseStorage(aSubjectPrincipal)) {
+ aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+ return 0;
+ }
+
+ uint32_t length;
+ aRv = mCache->GetLength(this, &length);
+ return length;
+}
+
+void
+DOMStorage::Key(uint32_t aIndex, nsAString& aResult,
+ nsIPrincipal& aSubjectPrincipal,
+ ErrorResult& aRv)
+{
+ if (!CanUseStorage(aSubjectPrincipal)) {
+ aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+ return;
+ }
+
+ aRv = mCache->GetKey(this, aIndex, aResult);
+}
+
+void
+DOMStorage::GetItem(const nsAString& aKey, nsAString& aResult,
+ nsIPrincipal& aSubjectPrincipal,
+ ErrorResult& aRv)
+{
+ if (!CanUseStorage(aSubjectPrincipal)) {
+ aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+ return;
+ }
+
+ aRv = mCache->GetItem(this, aKey, aResult);
+}
+
+void
+DOMStorage::SetItem(const nsAString& aKey, const nsAString& aData,
+ nsIPrincipal& aSubjectPrincipal,
+ ErrorResult& aRv)
+{
+ if (!CanUseStorage(aSubjectPrincipal)) {
+ aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+ return;
+ }
+
+ nsString data;
+ bool ok = data.Assign(aData, fallible);
+ if (!ok) {
+ aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
+ return;
+ }
+
+ nsString old;
+ aRv = mCache->SetItem(this, aKey, data, old);
+ if (aRv.Failed()) {
+ return;
+ }
+
+ if (!aRv.ErrorCodeIs(NS_SUCCESS_DOM_NO_OPERATION)) {
+ BroadcastChangeNotification(aKey, old, aData);
+ }
+}
+
+void
+DOMStorage::RemoveItem(const nsAString& aKey,
+ nsIPrincipal& aSubjectPrincipal,
+ ErrorResult& aRv)
+{
+ if (!CanUseStorage(aSubjectPrincipal)) {
+ aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+ return;
+ }
+
+ nsAutoString old;
+ aRv = mCache->RemoveItem(this, aKey, old);
+ if (aRv.Failed()) {
+ return;
+ }
+
+ if (!aRv.ErrorCodeIs(NS_SUCCESS_DOM_NO_OPERATION)) {
+ BroadcastChangeNotification(aKey, old, NullString());
+ }
+}
+
+void
+DOMStorage::Clear(nsIPrincipal& aSubjectPrincipal,
+ ErrorResult& aRv)
+{
+ if (!CanUseStorage(aSubjectPrincipal)) {
+ aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+ return;
+ }
+
+ aRv = mCache->Clear(this);
+ if (NS_WARN_IF(aRv.Failed())) {
+ return;
+ }
+
+ if (!aRv.ErrorCodeIs(NS_SUCCESS_DOM_NO_OPERATION)) {
+ BroadcastChangeNotification(NullString(), NullString(), NullString());
+ }
+}
+
+namespace {
+
+class StorageNotifierRunnable : public Runnable
+{
+public:
+ StorageNotifierRunnable(nsISupports* aSubject, const char16_t* aType)
+ : mSubject(aSubject), mType(aType)
+ { }
+
+ NS_DECL_NSIRUNNABLE
+
+private:
+ nsCOMPtr<nsISupports> mSubject;
+ const char16_t* mType;
+};
+
+NS_IMETHODIMP
+StorageNotifierRunnable::Run()
+{
+ nsCOMPtr<nsIObserverService> observerService =
+ mozilla::services::GetObserverService();
+ if (observerService) {
+ observerService->NotifyObservers(mSubject, "dom-storage2-changed", mType);
+ }
+ return NS_OK;
+}
+
+} // namespace
+
+void
+DOMStorage::BroadcastChangeNotification(const nsSubstring& aKey,
+ const nsSubstring& aOldValue,
+ const nsSubstring& aNewValue)
+{
+ StorageEventInit dict;
+ dict.mBubbles = false;
+ dict.mCancelable = false;
+ dict.mKey = aKey;
+ dict.mNewValue = aNewValue;
+ dict.mOldValue = aOldValue;
+ dict.mStorageArea = this;
+ dict.mUrl = mDocumentURI;
+
+ // Note, this DOM event should never reach JS. It is cloned later in
+ // nsGlobalWindow.
+ RefPtr<StorageEvent> event =
+ StorageEvent::Constructor(nullptr, NS_LITERAL_STRING("storage"), dict);
+
+ RefPtr<StorageNotifierRunnable> r =
+ new StorageNotifierRunnable(event,
+ GetType() == LocalStorage
+ ? u"localStorage"
+ : u"sessionStorage");
+ NS_DispatchToMainThread(r);
+}
+
+static const char kPermissionType[] = "cookie";
+static const char kStorageEnabled[] = "dom.storage.enabled";
+
+bool
+DOMStorage::CanUseStorage(nsIPrincipal& aSubjectPrincipal)
+{
+ // This method is responsible for correct setting of mIsSessionOnly.
+ // It doesn't work with mIsPrivate flag at all, since it is checked
+ // regardless mIsSessionOnly flag in DOMStorageCache code.
+
+ if (!mozilla::Preferences::GetBool(kStorageEnabled)) {
+ return false;
+ }
+
+ nsContentUtils::StorageAccess access =
+ nsContentUtils::StorageAllowedForPrincipal(mPrincipal);
+
+ if (access == nsContentUtils::StorageAccess::eDeny) {
+ return false;
+ }
+
+ mIsSessionOnly = access <= nsContentUtils::StorageAccess::eSessionScoped;
+ return CanAccess(&aSubjectPrincipal);
+}
+
+DOMStorage::StorageType
+DOMStorage::GetType() const
+{
+ return mManager->Type();
+}
+
+nsIPrincipal*
+DOMStorage::GetPrincipal()
+{
+ return mPrincipal;
+}
+
+// Defined in DOMStorageManager.cpp
+extern bool
+PrincipalsEqual(nsIPrincipal* aObjectPrincipal, nsIPrincipal* aSubjectPrincipal);
+
+bool
+DOMStorage::PrincipalEquals(nsIPrincipal* aPrincipal)
+{
+ return PrincipalsEqual(mPrincipal, aPrincipal);
+}
+
+bool
+DOMStorage::CanAccess(nsIPrincipal* aPrincipal)
+{
+ return !aPrincipal || aPrincipal->Subsumes(mPrincipal);
+}
+
+void
+DOMStorage::GetSupportedNames(nsTArray<nsString>& aKeys)
+{
+ if (!CanUseStorage(*nsContentUtils::SubjectPrincipal())) {
+ // return just an empty array
+ aKeys.Clear();
+ return;
+ }
+
+ mCache->GetKeys(this, aKeys);
+}
+
+} // namespace dom
+} // namespace mozilla