tor-browser

The Tor Browser
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ServiceWorkerManagerParent.cpp (3757B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "ServiceWorkerManagerParent.h"
      8 
      9 #include "ServiceWorkerUtils.h"
     10 #include "mozilla/dom/ContentParent.h"
     11 #include "mozilla/dom/ServiceWorkerRegistrar.h"
     12 #include "mozilla/ipc/BackgroundParent.h"
     13 #include "mozilla/ipc/BackgroundUtils.h"
     14 #include "nsThreadUtils.h"
     15 
     16 namespace mozilla {
     17 
     18 using namespace ipc;
     19 
     20 namespace dom {
     21 
     22 ServiceWorkerManagerParent::ServiceWorkerManagerParent() {
     23  AssertIsOnBackgroundThread();
     24 }
     25 
     26 ServiceWorkerManagerParent::~ServiceWorkerManagerParent() {
     27  AssertIsOnBackgroundThread();
     28 }
     29 
     30 mozilla::ipc::IPCResult ServiceWorkerManagerParent::RecvRegister(
     31    const ServiceWorkerRegistrationData& aData) {
     32  AssertIsInMainProcess();
     33  AssertIsOnBackgroundThread();
     34  MOZ_ASSERT(!BackgroundParent::IsOtherProcessActor(Manager()));
     35 
     36  // Basic validation.
     37  if (aData.scope().IsEmpty() ||
     38      aData.principal().type() == PrincipalInfo::TNullPrincipalInfo ||
     39      aData.principal().type() == PrincipalInfo::TSystemPrincipalInfo) {
     40    return IPC_FAIL_NO_REASON(this);
     41  }
     42 
     43  // If false then we have shutdown during the process of trying to update the
     44  // registrar. We can give up on this modification.
     45  if (const RefPtr<dom::ServiceWorkerRegistrar> service =
     46          dom::ServiceWorkerRegistrar::Get()) {
     47    service->RegisterServiceWorker(aData);
     48  }
     49 
     50  return IPC_OK();
     51 }
     52 
     53 mozilla::ipc::IPCResult ServiceWorkerManagerParent::RecvUnregister(
     54    const PrincipalInfo& aPrincipalInfo, const nsString& aScope) {
     55  AssertIsInMainProcess();
     56  AssertIsOnBackgroundThread();
     57  MOZ_ASSERT(!BackgroundParent::IsOtherProcessActor(Manager()));
     58 
     59  // Basic validation.
     60  if (aScope.IsEmpty() ||
     61      aPrincipalInfo.type() == PrincipalInfo::TNullPrincipalInfo ||
     62      aPrincipalInfo.type() == PrincipalInfo::TSystemPrincipalInfo) {
     63    return IPC_FAIL_NO_REASON(this);
     64  }
     65 
     66  // If false then we have shutdown during the process of trying to update the
     67  // registrar. We can give up on this modification.
     68  if (const RefPtr<dom::ServiceWorkerRegistrar> service =
     69          dom::ServiceWorkerRegistrar::Get()) {
     70    service->UnregisterServiceWorker(aPrincipalInfo,
     71                                     NS_ConvertUTF16toUTF8(aScope));
     72  }
     73 
     74  return IPC_OK();
     75 }
     76 
     77 mozilla::ipc::IPCResult ServiceWorkerManagerParent::RecvPropagateUnregister(
     78    const PrincipalInfo& aPrincipalInfo, const nsString& aScope) {
     79  AssertIsOnBackgroundThread();
     80 
     81  RefPtr<dom::ServiceWorkerRegistrar> service =
     82      dom::ServiceWorkerRegistrar::Get();
     83  MOZ_ASSERT(service);
     84 
     85  // It's possible that we don't have any ServiceWorkerManager managing this
     86  // scope but we still need to unregister it from the ServiceWorkerRegistrar.
     87  service->UnregisterServiceWorker(aPrincipalInfo,
     88                                   NS_ConvertUTF16toUTF8(aScope));
     89 
     90  // There is no longer any point to propagating because the only sender is the
     91  // one and only ServiceWorkerManager, but it is necessary for us to have run
     92  // the unregister call above because until Bug 1183245 is fixed,
     93  // nsIServiceWorkerManager.propagateUnregister() is a de facto API for
     94  // clearing ServiceWorker registrations by Sanitizer.sys.mjs via
     95  // ServiceWorkerCleanUp.sys.mjs, as well as devtools "unregister" affordance
     96  // and the no-longer-relevant about:serviceworkers UI.
     97 
     98  return IPC_OK();
     99 }
    100 
    101 void ServiceWorkerManagerParent::ActorDestroy(ActorDestroyReason aWhy) {
    102  AssertIsOnBackgroundThread();
    103 }
    104 
    105 }  // namespace dom
    106 }  // namespace mozilla