File: ServiceWorkerRegistrationDescriptor.cpp

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/* -*- 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 "mozilla/dom/ServiceWorkerRegistrationDescriptor.h"

#include "mozilla/dom/IPCServiceWorkerRegistrationDescriptor.h"
#include "mozilla/ipc/PBackgroundSharedTypes.h"
#include "ServiceWorkerInfo.h"

namespace mozilla {
namespace dom {

Maybe<IPCServiceWorkerDescriptor>
ServiceWorkerRegistrationDescriptor::NewestInternal() const {
  Maybe<IPCServiceWorkerDescriptor> result;
  if (mData->installing().type() !=
      OptionalIPCServiceWorkerDescriptor::Tvoid_t) {
    result.emplace(mData->installing().get_IPCServiceWorkerDescriptor());
  } else if (mData->waiting().type() !=
             OptionalIPCServiceWorkerDescriptor::Tvoid_t) {
    result.emplace(mData->waiting().get_IPCServiceWorkerDescriptor());
  } else if (mData->active().type() !=
             OptionalIPCServiceWorkerDescriptor::Tvoid_t) {
    result.emplace(mData->active().get_IPCServiceWorkerDescriptor());
  }
  return Move(result);
}

ServiceWorkerRegistrationDescriptor::ServiceWorkerRegistrationDescriptor(
    uint64_t aId, nsIPrincipal* aPrincipal, const nsACString& aScope,
    ServiceWorkerUpdateViaCache aUpdateViaCache)
    : mData(MakeUnique<IPCServiceWorkerRegistrationDescriptor>()) {
  MOZ_ALWAYS_SUCCEEDS(
      PrincipalToPrincipalInfo(aPrincipal, &mData->principalInfo()));

  mData->id() = aId;
  mData->scope() = aScope;
  mData->updateViaCache() = aUpdateViaCache;
  mData->installing() = void_t();
  mData->waiting() = void_t();
  mData->active() = void_t();
}

ServiceWorkerRegistrationDescriptor::ServiceWorkerRegistrationDescriptor(
    uint64_t aId, const mozilla::ipc::PrincipalInfo& aPrincipalInfo,
    const nsACString& aScope, ServiceWorkerUpdateViaCache aUpdateViaCache)
    : mData(MakeUnique<IPCServiceWorkerRegistrationDescriptor>(
          aId, aPrincipalInfo, nsCString(aScope), aUpdateViaCache, void_t(),
          void_t(), void_t())) {}

ServiceWorkerRegistrationDescriptor::ServiceWorkerRegistrationDescriptor(
    const IPCServiceWorkerRegistrationDescriptor& aDescriptor)
    : mData(MakeUnique<IPCServiceWorkerRegistrationDescriptor>(aDescriptor)) {
  MOZ_DIAGNOSTIC_ASSERT(IsValid());
}

ServiceWorkerRegistrationDescriptor::ServiceWorkerRegistrationDescriptor(
    const ServiceWorkerRegistrationDescriptor& aRight) {
  // UniquePtr doesn't have a default copy constructor, so we can't rely
  // on default copy construction.  Use the assignment operator to
  // minimize duplication.
  operator=(aRight);
}

ServiceWorkerRegistrationDescriptor& ServiceWorkerRegistrationDescriptor::
operator=(const ServiceWorkerRegistrationDescriptor& aRight) {
  if (this == &aRight) {
    return *this;
  }
  mData.reset();
  mData = MakeUnique<IPCServiceWorkerRegistrationDescriptor>(*aRight.mData);
  MOZ_DIAGNOSTIC_ASSERT(IsValid());
  return *this;
}

ServiceWorkerRegistrationDescriptor::ServiceWorkerRegistrationDescriptor(
    ServiceWorkerRegistrationDescriptor&& aRight)
    : mData(Move(aRight.mData)) {
  MOZ_DIAGNOSTIC_ASSERT(IsValid());
}

ServiceWorkerRegistrationDescriptor& ServiceWorkerRegistrationDescriptor::
operator=(ServiceWorkerRegistrationDescriptor&& aRight) {
  mData.reset();
  mData = Move(aRight.mData);
  MOZ_DIAGNOSTIC_ASSERT(IsValid());
  return *this;
}

ServiceWorkerRegistrationDescriptor::~ServiceWorkerRegistrationDescriptor() {
  // Non-default destructor to avoid exposing the IPC type in the header.
}

bool ServiceWorkerRegistrationDescriptor::operator==(
    const ServiceWorkerRegistrationDescriptor& aRight) const {
  return *mData == *aRight.mData;
}

uint64_t ServiceWorkerRegistrationDescriptor::Id() const { return mData->id(); }

ServiceWorkerUpdateViaCache
ServiceWorkerRegistrationDescriptor::UpdateViaCache() const {
  return mData->updateViaCache();
}

const mozilla::ipc::PrincipalInfo&
ServiceWorkerRegistrationDescriptor::PrincipalInfo() const {
  return mData->principalInfo();
}

const nsCString& ServiceWorkerRegistrationDescriptor::Scope() const {
  return mData->scope();
}

Maybe<ServiceWorkerDescriptor>
ServiceWorkerRegistrationDescriptor::GetInstalling() const {
  Maybe<ServiceWorkerDescriptor> result;

  if (mData->installing().type() !=
      OptionalIPCServiceWorkerDescriptor::Tvoid_t) {
    result.emplace(ServiceWorkerDescriptor(
        mData->installing().get_IPCServiceWorkerDescriptor()));
  }

  return Move(result);
}

Maybe<ServiceWorkerDescriptor> ServiceWorkerRegistrationDescriptor::GetWaiting()
    const {
  Maybe<ServiceWorkerDescriptor> result;

  if (mData->waiting().type() != OptionalIPCServiceWorkerDescriptor::Tvoid_t) {
    result.emplace(ServiceWorkerDescriptor(
        mData->waiting().get_IPCServiceWorkerDescriptor()));
  }

  return Move(result);
}

Maybe<ServiceWorkerDescriptor> ServiceWorkerRegistrationDescriptor::GetActive()
    const {
  Maybe<ServiceWorkerDescriptor> result;

  if (mData->active().type() != OptionalIPCServiceWorkerDescriptor::Tvoid_t) {
    result.emplace(ServiceWorkerDescriptor(
        mData->active().get_IPCServiceWorkerDescriptor()));
  }

  return Move(result);
}

Maybe<ServiceWorkerDescriptor> ServiceWorkerRegistrationDescriptor::Newest()
    const {
  Maybe<ServiceWorkerDescriptor> result;
  Maybe<IPCServiceWorkerDescriptor> newest(NewestInternal());
  if (newest.isSome()) {
    result.emplace(ServiceWorkerDescriptor(newest.ref()));
  }
  return Move(result);
}

namespace {

bool IsValidWorker(
    const OptionalIPCServiceWorkerDescriptor& aWorker, const nsACString& aScope,
    const mozilla::ipc::ContentPrincipalInfo& aContentPrincipal) {
  if (aWorker.type() == OptionalIPCServiceWorkerDescriptor::Tvoid_t) {
    return true;
  }

  auto& worker = aWorker.get_IPCServiceWorkerDescriptor();
  if (worker.scope() != aScope) {
    return false;
  }

  auto& principalInfo = worker.principalInfo();
  if (principalInfo.type() !=
      mozilla::ipc::PrincipalInfo::TContentPrincipalInfo) {
    return false;
  }

  auto& contentPrincipal = principalInfo.get_ContentPrincipalInfo();
  if (contentPrincipal.originNoSuffix() != aContentPrincipal.originNoSuffix() ||
      contentPrincipal.attrs() != aContentPrincipal.attrs()) {
    return false;
  }

  return true;
}

}  // anonymous namespace

bool ServiceWorkerRegistrationDescriptor::IsValid() const {
  auto& principalInfo = PrincipalInfo();
  if (principalInfo.type() !=
      mozilla::ipc::PrincipalInfo::TContentPrincipalInfo) {
    return false;
  }

  auto& contentPrincipal = principalInfo.get_ContentPrincipalInfo();
  if (!IsValidWorker(mData->installing(), Scope(), contentPrincipal) ||
      !IsValidWorker(mData->waiting(), Scope(), contentPrincipal) ||
      !IsValidWorker(mData->active(), Scope(), contentPrincipal)) {
    return false;
  }

  return true;
}

void ServiceWorkerRegistrationDescriptor::SetUpdateViaCache(
    ServiceWorkerUpdateViaCache aUpdateViaCache) {
  mData->updateViaCache() = aUpdateViaCache;
}

void ServiceWorkerRegistrationDescriptor::SetWorkers(
    ServiceWorkerInfo* aInstalling, ServiceWorkerInfo* aWaiting,
    ServiceWorkerInfo* aActive) {
  if (aInstalling) {
    mData->installing() = aInstalling->Descriptor().ToIPC();
  } else {
    mData->installing() = void_t();
  }

  if (aWaiting) {
    mData->waiting() = aWaiting->Descriptor().ToIPC();
  } else {
    mData->waiting() = void_t();
  }

  if (aActive) {
    mData->active() = aActive->Descriptor().ToIPC();
  } else {
    mData->active() = void_t();
  }

  MOZ_DIAGNOSTIC_ASSERT(IsValid());
}

void ServiceWorkerRegistrationDescriptor::SetWorkers(
    const OptionalIPCServiceWorkerDescriptor& aInstalling,
    const OptionalIPCServiceWorkerDescriptor& aWaiting,
    const OptionalIPCServiceWorkerDescriptor& aActive) {
  mData->installing() = aInstalling;
  mData->waiting() = aWaiting;
  mData->active() = aActive;
  MOZ_DIAGNOSTIC_ASSERT(IsValid());
}

const IPCServiceWorkerRegistrationDescriptor&
ServiceWorkerRegistrationDescriptor::ToIPC() const {
  return *mData;
}

}  // namespace dom
}  // namespace mozilla