Add m-esr52 at 52.6.0

1 files changed, 378 insertions, 0 deletions

diff --git a/dom/quota/StorageManager.cpp b/dom/quota/StorageManager.cpp
new file mode 100644
index 000000000..c8455f0fe
--- /dev/null
+++ b/dom/quota/StorageManager.cpp
@@ -0,0 +1,378 @@
+/* -*- 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 "StorageManager.h"
+
+#include "mozilla/dom/PromiseWorkerProxy.h"
+#include "mozilla/dom/quota/QuotaManagerService.h"
+#include "mozilla/dom/StorageManagerBinding.h"
+#include "mozilla/dom/WorkerPrivate.h"
+#include "mozilla/ErrorResult.h"
+#include "nsIQuotaCallbacks.h"
+#include "nsIQuotaRequests.h"
+#include "nsPIDOMWindow.h"
+
+using namespace mozilla::dom::workers;
+
+namespace mozilla {
+namespace dom {
+
+namespace {
+
+// This class is used to get quota usage callback.
+class EstimateResolver final
+  : public nsIQuotaUsageCallback
+{
+  class FinishWorkerRunnable;
+
+  // If this resolver was created for a window then mPromise must be non-null.
+  // Otherwise mProxy must be non-null.
+  RefPtr<Promise> mPromise;
+  RefPtr<PromiseWorkerProxy> mProxy;
+
+  nsresult mResultCode;
+  StorageEstimate mStorageEstimate;
+
+public:
+  explicit EstimateResolver(Promise* aPromise)
+    : mPromise(aPromise)
+    , mResultCode(NS_OK)
+  {
+    MOZ_ASSERT(NS_IsMainThread());
+    MOZ_ASSERT(aPromise);
+  }
+
+  explicit EstimateResolver(PromiseWorkerProxy* aProxy)
+    : mProxy(aProxy)
+    , mResultCode(NS_OK)
+  {
+    MOZ_ASSERT(NS_IsMainThread());
+    MOZ_ASSERT(aProxy);
+  }
+
+  void
+  ResolveOrReject(Promise* aPromise);
+
+  NS_DECL_THREADSAFE_ISUPPORTS
+
+  NS_DECL_NSIQUOTAUSAGECALLBACK
+
+private:
+  ~EstimateResolver()
+  { }
+};
+
+// This class is used to return promise on worker thread.
+class EstimateResolver::FinishWorkerRunnable final
+  : public WorkerRunnable
+{
+  RefPtr<EstimateResolver> mResolver;
+
+public:
+  explicit FinishWorkerRunnable(EstimateResolver* aResolver)
+    : WorkerRunnable(aResolver->mProxy->GetWorkerPrivate())
+    , mResolver(aResolver)
+  {
+    MOZ_ASSERT(NS_IsMainThread());
+    MOZ_ASSERT(aResolver);
+  }
+
+  virtual bool
+  WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override;
+};
+
+class EstimateWorkerMainThreadRunnable
+  : public WorkerMainThreadRunnable
+{
+  RefPtr<PromiseWorkerProxy> mProxy;
+
+public:
+  EstimateWorkerMainThreadRunnable(WorkerPrivate* aWorkerPrivate,
+                                   PromiseWorkerProxy* aProxy)
+    : WorkerMainThreadRunnable(aWorkerPrivate,
+                               NS_LITERAL_CSTRING("StorageManager :: Estimate"))
+    , mProxy(aProxy)
+  {
+    MOZ_ASSERT(aWorkerPrivate);
+    aWorkerPrivate->AssertIsOnWorkerThread();
+    MOZ_ASSERT(aProxy);
+  }
+
+  virtual bool
+  MainThreadRun() override;
+};
+
+nsresult
+GetUsageForPrincipal(nsIPrincipal* aPrincipal,
+                     nsIQuotaUsageCallback* aCallback,
+                     nsIQuotaUsageRequest** aRequest)
+{
+  MOZ_ASSERT(aPrincipal);
+  MOZ_ASSERT(aCallback);
+  MOZ_ASSERT(aRequest);
+
+  nsCOMPtr<nsIQuotaManagerService> qms = QuotaManagerService::GetOrCreate();
+  if (NS_WARN_IF(!qms)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsresult rv = qms->GetUsageForPrincipal(aPrincipal, aCallback, true, aRequest);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  return NS_OK;
+};
+
+nsresult
+GetStorageEstimate(nsIQuotaUsageRequest* aRequest,
+                   StorageEstimate& aStorageEstimate)
+{
+  MOZ_ASSERT(aRequest);
+
+  nsCOMPtr<nsIVariant> result;
+  nsresult rv = aRequest->GetResult(getter_AddRefs(result));
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  nsID* iid;
+  nsCOMPtr<nsISupports> supports;
+  rv = result->GetAsInterface(&iid, getter_AddRefs(supports));
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  free(iid);
+
+  nsCOMPtr<nsIQuotaOriginUsageResult> originUsageResult =
+    do_QueryInterface(supports);
+  MOZ_ASSERT(originUsageResult);
+
+  MOZ_ALWAYS_SUCCEEDS(
+    originUsageResult->GetUsage(&aStorageEstimate.mUsage.Construct()));
+
+  MOZ_ALWAYS_SUCCEEDS(
+    originUsageResult->GetLimit(&aStorageEstimate.mQuota.Construct()));
+
+  return NS_OK;
+}
+
+} // namespace
+
+/*******************************************************************************
+ * Local class implementations
+ ******************************************************************************/
+
+void
+EstimateResolver::ResolveOrReject(Promise* aPromise)
+{
+  MOZ_ASSERT(aPromise);
+
+  if (NS_SUCCEEDED(mResultCode)) {
+    aPromise->MaybeResolve(mStorageEstimate);
+  } else {
+    aPromise->MaybeReject(mResultCode);
+  }
+}
+
+NS_IMPL_ISUPPORTS(EstimateResolver, nsIQuotaUsageCallback)
+
+NS_IMETHODIMP
+EstimateResolver::OnUsageResult(nsIQuotaUsageRequest *aRequest)
+{
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(aRequest);
+
+  nsresult rv = aRequest->GetResultCode(&mResultCode);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    mResultCode = rv;
+  } else if (NS_SUCCEEDED(mResultCode)) {
+    rv = GetStorageEstimate(aRequest, mStorageEstimate);
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      mResultCode = rv;
+    }
+  }
+
+  // In a main thread request.
+  if (!mProxy) {
+    MOZ_ASSERT(mPromise);
+
+    ResolveOrReject(mPromise);
+    return NS_OK;
+  }
+
+  // In a worker thread request.
+  MutexAutoLock lock(mProxy->Lock());
+
+  if (NS_WARN_IF(mProxy->CleanedUp())) {
+    return NS_ERROR_FAILURE;
+  }
+
+  RefPtr<FinishWorkerRunnable> runnable = new FinishWorkerRunnable(this);
+  if (NS_WARN_IF(!runnable->Dispatch())) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+bool
+EstimateResolver::
+FinishWorkerRunnable::WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate)
+{
+  MOZ_ASSERT(aWorkerPrivate);
+  aWorkerPrivate->AssertIsOnWorkerThread();
+
+  RefPtr<PromiseWorkerProxy> proxy = mResolver->mProxy;
+  MOZ_ASSERT(proxy);
+
+  RefPtr<Promise> promise = proxy->WorkerPromise();
+  MOZ_ASSERT(promise);
+
+  mResolver->ResolveOrReject(promise);
+
+  proxy->CleanUp();
+
+  return true;
+}
+
+bool
+EstimateWorkerMainThreadRunnable::MainThreadRun()
+{
+  MOZ_ASSERT(NS_IsMainThread());
+
+  nsCOMPtr<nsIPrincipal> principal;
+
+  {
+    MutexAutoLock lock(mProxy->Lock());
+    if (mProxy->CleanedUp()) {
+      return true;
+    }
+    principal = mProxy->GetWorkerPrivate()->GetPrincipal();
+  }
+
+  MOZ_ASSERT(principal);
+
+  RefPtr<EstimateResolver> resolver = new EstimateResolver(mProxy);
+
+  RefPtr<nsIQuotaUsageRequest> request;
+  nsresult rv =
+    GetUsageForPrincipal(principal, resolver, getter_AddRefs(request));
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return false;
+  }
+
+  return true;
+}
+
+/*******************************************************************************
+ * StorageManager
+ ******************************************************************************/
+
+StorageManager::StorageManager(nsIGlobalObject* aGlobal)
+  : mOwner(aGlobal)
+{
+  MOZ_ASSERT(aGlobal);
+}
+
+StorageManager::~StorageManager()
+{
+}
+
+already_AddRefed<Promise>
+StorageManager::Estimate(ErrorResult& aRv)
+{
+  MOZ_ASSERT(mOwner);
+
+  RefPtr<Promise> promise = Promise::Create(mOwner, aRv);
+  if (NS_WARN_IF(!promise)) {
+    return nullptr;
+  }
+
+  if (NS_IsMainThread()) {
+    nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(mOwner);
+    if (NS_WARN_IF(!window)) {
+      aRv.Throw(NS_ERROR_FAILURE);
+      return nullptr;
+    }
+
+    nsCOMPtr<nsIDocument> doc = window->GetExtantDoc();
+    if (NS_WARN_IF(!doc)) {
+      aRv.Throw(NS_ERROR_FAILURE);
+      return nullptr;
+    }
+
+    nsCOMPtr<nsIPrincipal> principal = doc->NodePrincipal();
+    MOZ_ASSERT(principal);
+
+    RefPtr<EstimateResolver> resolver = new EstimateResolver(promise);
+
+    RefPtr<nsIQuotaUsageRequest> request;
+    nsresult rv =
+      GetUsageForPrincipal(principal, resolver, getter_AddRefs(request));
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      aRv.Throw(rv);
+      return nullptr;
+    }
+
+    return promise.forget();
+  }
+
+  WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
+  MOZ_ASSERT(workerPrivate);
+
+  RefPtr<PromiseWorkerProxy> promiseProxy =
+    PromiseWorkerProxy::Create(workerPrivate, promise);
+  if (NS_WARN_IF(!promiseProxy)) {
+    return nullptr;
+  }
+
+  RefPtr<EstimateWorkerMainThreadRunnable> runnnable =
+    new EstimateWorkerMainThreadRunnable(promiseProxy->GetWorkerPrivate(),
+                                         promiseProxy);
+
+  runnnable->Dispatch(aRv);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return nullptr;
+  }
+
+  return promise.forget();
+}
+
+// static
+bool
+StorageManager::PrefEnabled(JSContext* aCx, JSObject* aObj)
+{
+  if (NS_IsMainThread()) {
+    return Preferences::GetBool("dom.storageManager.enabled");
+  }
+
+  WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
+  MOZ_ASSERT(workerPrivate);
+
+  return workerPrivate->StorageManagerEnabled();
+}
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(StorageManager, mOwner)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(StorageManager)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(StorageManager)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(StorageManager)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+JSObject*
+StorageManager::WrapObject(JSContext* aCx,
+                           JS::Handle<JSObject*> aGivenProto)
+{
+  return StorageManagerBinding::Wrap(aCx, this, aGivenProto);
+}
+
+} // namespace dom
+} // namespace mozilla