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gecko-dev/dom/serviceworkers/ServiceWorkerManager.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 "ServiceWorkerManager.h"
#include "nsAutoPtr.h"
#include "nsIConsoleService.h"
#include "nsIDOMEventTarget.h"
#include "nsIDocument.h"
#include "nsIScriptSecurityManager.h"
#include "nsIStreamLoader.h"
#include "nsIHttpChannel.h"
#include "nsIHttpChannelInternal.h"
#include "nsIHttpHeaderVisitor.h"
#include "nsINamed.h"
#include "nsINetworkInterceptController.h"
#include "nsIMutableArray.h"
#include "nsIScriptError.h"
#include "nsISimpleEnumerator.h"
#include "nsITimer.h"
#include "nsIUploadChannel2.h"
#include "nsPIDOMWindow.h"
#include "nsServiceManagerUtils.h"
#include "nsDebug.h"
#include "nsISupportsPrimitives.h"
#include "nsIPermissionManager.h"
#include "jsapi.h"
#include "mozilla/BasePrincipal.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/ErrorNames.h"
#include "mozilla/LoadContext.h"
#include "mozilla/SystemGroup.h"
#include "mozilla/Telemetry.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/ClientHandle.h"
#include "mozilla/dom/ClientManager.h"
#include "mozilla/dom/ConsoleUtils.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/dom/DOMPrefs.h"
#include "mozilla/dom/ErrorEvent.h"
#include "mozilla/dom/Headers.h"
#include "mozilla/dom/InternalHeaders.h"
#include "mozilla/dom/Navigator.h"
#include "mozilla/dom/NotificationEvent.h"
#include "mozilla/dom/PromiseNativeHandler.h"
#include "mozilla/dom/PromiseWindowProxy.h"
#include "mozilla/dom/Request.h"
#include "mozilla/dom/RootedDictionary.h"
#include "mozilla/dom/TypedArray.h"
#include "mozilla/dom/SharedWorker.h"
#include "mozilla/dom/WorkerPrivate.h"
#include "mozilla/dom/WorkerRunnable.h"
#include "mozilla/dom/WorkerScope.h"
#include "mozilla/ipc/BackgroundChild.h"
#include "mozilla/ipc/PBackgroundChild.h"
#include "mozilla/ipc/PBackgroundSharedTypes.h"
#include "mozilla/dom/ScriptLoader.h"
#include "mozilla/Unused.h"
#include "mozilla/EnumSet.h"
#include "nsContentPolicyUtils.h"
#include "nsContentSecurityManager.h"
#include "nsContentUtils.h"
#include "nsNetUtil.h"
#include "nsProxyRelease.h"
#include "nsQueryObject.h"
#include "nsTArray.h"
#include "ServiceWorker.h"
#include "ServiceWorkerContainer.h"
#include "ServiceWorkerInfo.h"
#include "ServiceWorkerJobQueue.h"
#include "ServiceWorkerManagerChild.h"
#include "ServiceWorkerPrivate.h"
#include "ServiceWorkerRegisterJob.h"
#include "ServiceWorkerRegistrar.h"
#include "ServiceWorkerRegistration.h"
#include "ServiceWorkerScriptCache.h"
#include "ServiceWorkerEvents.h"
#include "ServiceWorkerUnregisterJob.h"
#include "ServiceWorkerUpdateJob.h"
#include "ServiceWorkerUpdaterChild.h"
#ifdef PostMessage
#undef PostMessage
#endif
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::ipc;
namespace mozilla {
namespace dom {
#define PURGE_DOMAIN_DATA "browser:purge-domain-data"
#define PURGE_SESSION_HISTORY "browser:purge-session-history"
#define CLEAR_ORIGIN_DATA "clear-origin-attributes-data"
static_assert(nsIHttpChannelInternal::CORS_MODE_SAME_ORIGIN == static_cast<uint32_t>(RequestMode::Same_origin),
"RequestMode enumeration value should match Necko CORS mode value.");
static_assert(nsIHttpChannelInternal::CORS_MODE_NO_CORS == static_cast<uint32_t>(RequestMode::No_cors),
"RequestMode enumeration value should match Necko CORS mode value.");
static_assert(nsIHttpChannelInternal::CORS_MODE_CORS == static_cast<uint32_t>(RequestMode::Cors),
"RequestMode enumeration value should match Necko CORS mode value.");
static_assert(nsIHttpChannelInternal::CORS_MODE_NAVIGATE == static_cast<uint32_t>(RequestMode::Navigate),
"RequestMode enumeration value should match Necko CORS mode value.");
static_assert(nsIHttpChannelInternal::REDIRECT_MODE_FOLLOW == static_cast<uint32_t>(RequestRedirect::Follow),
"RequestRedirect enumeration value should make Necko Redirect mode value.");
static_assert(nsIHttpChannelInternal::REDIRECT_MODE_ERROR == static_cast<uint32_t>(RequestRedirect::Error),
"RequestRedirect enumeration value should make Necko Redirect mode value.");
static_assert(nsIHttpChannelInternal::REDIRECT_MODE_MANUAL == static_cast<uint32_t>(RequestRedirect::Manual),
"RequestRedirect enumeration value should make Necko Redirect mode value.");
static_assert(3 == static_cast<uint32_t>(RequestRedirect::EndGuard_),
"RequestRedirect enumeration value should make Necko Redirect mode value.");
static_assert(nsIHttpChannelInternal::FETCH_CACHE_MODE_DEFAULT == static_cast<uint32_t>(RequestCache::Default),
"RequestCache enumeration value should match Necko Cache mode value.");
static_assert(nsIHttpChannelInternal::FETCH_CACHE_MODE_NO_STORE == static_cast<uint32_t>(RequestCache::No_store),
"RequestCache enumeration value should match Necko Cache mode value.");
static_assert(nsIHttpChannelInternal::FETCH_CACHE_MODE_RELOAD == static_cast<uint32_t>(RequestCache::Reload),
"RequestCache enumeration value should match Necko Cache mode value.");
static_assert(nsIHttpChannelInternal::FETCH_CACHE_MODE_NO_CACHE == static_cast<uint32_t>(RequestCache::No_cache),
"RequestCache enumeration value should match Necko Cache mode value.");
static_assert(nsIHttpChannelInternal::FETCH_CACHE_MODE_FORCE_CACHE == static_cast<uint32_t>(RequestCache::Force_cache),
"RequestCache enumeration value should match Necko Cache mode value.");
static_assert(nsIHttpChannelInternal::FETCH_CACHE_MODE_ONLY_IF_CACHED == static_cast<uint32_t>(RequestCache::Only_if_cached),
"RequestCache enumeration value should match Necko Cache mode value.");
static_assert(6 == static_cast<uint32_t>(RequestCache::EndGuard_),
"RequestCache enumeration value should match Necko Cache mode value.");
static_assert(static_cast<uint16_t>(ServiceWorkerUpdateViaCache::Imports) ==
nsIServiceWorkerRegistrationInfo::UPDATE_VIA_CACHE_IMPORTS,
"nsIServiceWorkerRegistrationInfo::UPDATE_VIA_CACHE_*"
" should match ServiceWorkerUpdateViaCache enumeration.");
static_assert(static_cast<uint16_t>(ServiceWorkerUpdateViaCache::All) ==
nsIServiceWorkerRegistrationInfo::UPDATE_VIA_CACHE_ALL,
"nsIServiceWorkerRegistrationInfo::UPDATE_VIA_CACHE_*"
" should match ServiceWorkerUpdateViaCache enumeration.");
static_assert(static_cast<uint16_t>(ServiceWorkerUpdateViaCache::None) ==
nsIServiceWorkerRegistrationInfo::UPDATE_VIA_CACHE_NONE,
"nsIServiceWorkerRegistrationInfo::UPDATE_VIA_CACHE_*"
" should match ServiceWorkerUpdateViaCache enumeration.");
static StaticRefPtr<ServiceWorkerManager> gInstance;
struct ServiceWorkerManager::RegistrationDataPerPrincipal final
{
// Ordered list of scopes for glob matching.
// Each entry is an absolute URL representing the scope.
// Each value of the hash table is an array of an absolute URLs representing
// the scopes.
//
// An array is used for now since the number of controlled scopes per
// domain is expected to be relatively low. If that assumption was proved
// wrong this should be replaced with a better structure to avoid the
// memmoves associated with inserting stuff in the middle of the array.
nsTArray<nsCString> mOrderedScopes;
// Scope to registration.
// The scope should be a fully qualified valid URL.
nsRefPtrHashtable<nsCStringHashKey, ServiceWorkerRegistrationInfo> mInfos;
// Maps scopes to job queues.
nsRefPtrHashtable<nsCStringHashKey, ServiceWorkerJobQueue> mJobQueues;
// Map scopes to scheduled update timers.
nsInterfaceHashtable<nsCStringHashKey, nsITimer> mUpdateTimers;
};
namespace {
nsresult
PopulateRegistrationData(nsIPrincipal* aPrincipal,
const ServiceWorkerRegistrationInfo* aRegistration,
ServiceWorkerRegistrationData& aData)
{
MOZ_ASSERT(aPrincipal);
MOZ_ASSERT(aRegistration);
if (NS_WARN_IF(!BasePrincipal::Cast(aPrincipal)->IsCodebasePrincipal())) {
return NS_ERROR_FAILURE;
}
nsresult rv = PrincipalToPrincipalInfo(aPrincipal, &aData.principal());
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
aData.scope() = aRegistration->Scope();
RefPtr<ServiceWorkerInfo> newest = aRegistration->Newest();
if (NS_WARN_IF(!newest)) {
return NS_ERROR_FAILURE;
}
if (aRegistration->GetActive()) {
aData.currentWorkerURL() = aRegistration->GetActive()->ScriptSpec();
aData.cacheName() = aRegistration->GetActive()->CacheName();
aData.currentWorkerHandlesFetch() = aRegistration->GetActive()->HandlesFetch();
aData.currentWorkerInstalledTime() =
aRegistration->GetActive()->GetInstalledTime();
aData.currentWorkerActivatedTime() =
aRegistration->GetActive()->GetActivatedTime();
}
aData.updateViaCache() =
static_cast<uint32_t>(aRegistration->GetUpdateViaCache());
aData.lastUpdateTime() = aRegistration->GetLastUpdateTime();
return NS_OK;
}
class TeardownRunnable final : public Runnable
{
public:
explicit TeardownRunnable(ServiceWorkerManagerChild* aActor)
: Runnable("dom::ServiceWorkerManager::TeardownRunnable")
, mActor(aActor)
{
MOZ_ASSERT(mActor);
}
NS_IMETHOD Run() override
{
MOZ_ASSERT(mActor);
mActor->SendShutdown();
return NS_OK;
}
private:
~TeardownRunnable() {}
RefPtr<ServiceWorkerManagerChild> mActor;
};
} // namespace
//////////////////////////
// ServiceWorkerManager //
//////////////////////////
NS_IMPL_ADDREF(ServiceWorkerManager)
NS_IMPL_RELEASE(ServiceWorkerManager)
NS_INTERFACE_MAP_BEGIN(ServiceWorkerManager)
NS_INTERFACE_MAP_ENTRY(nsIServiceWorkerManager)
NS_INTERFACE_MAP_ENTRY(nsIObserver)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIServiceWorkerManager)
NS_INTERFACE_MAP_END
ServiceWorkerManager::ServiceWorkerManager()
: mActor(nullptr)
, mShuttingDown(false)
{
}
ServiceWorkerManager::~ServiceWorkerManager()
{
// The map will assert if it is not empty when destroyed.
mRegistrationInfos.Clear();
MOZ_ASSERT(!mActor);
}
void
ServiceWorkerManager::Init(ServiceWorkerRegistrar* aRegistrar)
{
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
DebugOnly<nsresult> rv;
rv = obs->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false /* ownsWeak */);
MOZ_ASSERT(NS_SUCCEEDED(rv));
}
if (XRE_IsParentProcess()) {
MOZ_DIAGNOSTIC_ASSERT(aRegistrar);
nsTArray<ServiceWorkerRegistrationData> data;
aRegistrar->GetRegistrations(data);
LoadRegistrations(data);
if (obs) {
DebugOnly<nsresult> rv;
rv = obs->AddObserver(this, PURGE_SESSION_HISTORY, false /* ownsWeak */);
MOZ_ASSERT(NS_SUCCEEDED(rv));
rv = obs->AddObserver(this, PURGE_DOMAIN_DATA, false /* ownsWeak */);
MOZ_ASSERT(NS_SUCCEEDED(rv));
rv = obs->AddObserver(this, CLEAR_ORIGIN_DATA, false /* ownsWeak */);
MOZ_ASSERT(NS_SUCCEEDED(rv));
}
}
PBackgroundChild* actorChild = BackgroundChild::GetOrCreateForCurrentThread();
if (NS_WARN_IF(!actorChild)) {
MaybeStartShutdown();
return;
}
PServiceWorkerManagerChild* actor =
actorChild->SendPServiceWorkerManagerConstructor();
if (!actor) {
MaybeStartShutdown();
return;
}
mActor = static_cast<ServiceWorkerManagerChild*>(actor);
}
RefPtr<GenericPromise>
ServiceWorkerManager::StartControllingClient(const ClientInfo& aClientInfo,
ServiceWorkerRegistrationInfo* aRegistrationInfo)
{
MOZ_DIAGNOSTIC_ASSERT(aRegistrationInfo->GetActive());
RefPtr<GenericPromise> ref;
const ServiceWorkerDescriptor& active =
aRegistrationInfo->GetActive()->Descriptor();
auto entry = mControlledClients.LookupForAdd(aClientInfo.Id());
if (entry) {
RefPtr<ServiceWorkerRegistrationInfo> old =
entry.Data()->mRegistrationInfo.forget();
ref = Move(entry.Data()->mClientHandle->Control(active));
entry.Data()->mRegistrationInfo = aRegistrationInfo;
if (old != aRegistrationInfo) {
StopControllingRegistration(old);
aRegistrationInfo->StartControllingClient();
}
Telemetry::Accumulate(Telemetry::SERVICE_WORKER_CONTROLLED_DOCUMENTS, 1);
return Move(ref);
}
RefPtr<ClientHandle> clientHandle =
ClientManager::CreateHandle(aClientInfo,
SystemGroup::EventTargetFor(TaskCategory::Other));
ref = Move(clientHandle->Control(active));
aRegistrationInfo->StartControllingClient();
entry.OrInsert([&] {
return new ControlledClientData(clientHandle, aRegistrationInfo);
});
RefPtr<ServiceWorkerManager> self(this);
clientHandle->OnDetach()->Then(
SystemGroup::EventTargetFor(TaskCategory::Other), __func__,
[self = Move(self), aClientInfo] {
self->StopControllingClient(aClientInfo);
});
Telemetry::Accumulate(Telemetry::SERVICE_WORKER_CONTROLLED_DOCUMENTS, 1);
return Move(ref);
}
void
ServiceWorkerManager::StopControllingClient(const ClientInfo& aClientInfo)
{
auto entry = mControlledClients.Lookup(aClientInfo.Id());
if (!entry) {
return;
}
RefPtr<ServiceWorkerRegistrationInfo> reg =
entry.Data()->mRegistrationInfo.forget();
entry.Remove();
StopControllingRegistration(reg);
}
void
ServiceWorkerManager::MaybeStartShutdown()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown) {
return;
}
mShuttingDown = true;
for (auto it1 = mRegistrationInfos.Iter(); !it1.Done(); it1.Next()) {
for (auto it2 = it1.UserData()->mUpdateTimers.Iter(); !it2.Done(); it2.Next()) {
nsCOMPtr<nsITimer> timer = it2.UserData();
timer->Cancel();
}
it1.UserData()->mUpdateTimers.Clear();
for (auto it2 = it1.UserData()->mJobQueues.Iter(); !it2.Done(); it2.Next()) {
RefPtr<ServiceWorkerJobQueue> queue = it2.UserData();
queue->CancelAll();
}
it1.UserData()->mJobQueues.Clear();
}
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
obs->RemoveObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID);
if (XRE_IsParentProcess()) {
obs->RemoveObserver(this, PURGE_SESSION_HISTORY);
obs->RemoveObserver(this, PURGE_DOMAIN_DATA);
obs->RemoveObserver(this, CLEAR_ORIGIN_DATA);
}
}
if (!mActor) {
return;
}
mActor->ManagerShuttingDown();
RefPtr<TeardownRunnable> runnable = new TeardownRunnable(mActor);
nsresult rv = NS_DispatchToMainThread(runnable);
Unused << NS_WARN_IF(NS_FAILED(rv));
mActor = nullptr;
}
class ServiceWorkerResolveWindowPromiseOnRegisterCallback final : public ServiceWorkerJob::Callback
{
// The promise "returned" by the call to Update up to
// navigator.serviceWorker.register().
PromiseWindowProxy mPromise;
~ServiceWorkerResolveWindowPromiseOnRegisterCallback()
{}
virtual void
JobFinished(ServiceWorkerJob* aJob, ErrorResult& aStatus) override
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aJob);
RefPtr<Promise> promise = mPromise.Get();
if (!promise) {
return;
}
if (aStatus.Failed()) {
promise->MaybeReject(aStatus);
return;
}
nsCOMPtr<nsPIDOMWindowInner> window = mPromise.GetWindow();
if (!window) {
return;
}
MOZ_ASSERT(aJob->GetType() == ServiceWorkerJob::Type::Register);
RefPtr<ServiceWorkerRegisterJob> registerJob =
static_cast<ServiceWorkerRegisterJob*>(aJob);
RefPtr<ServiceWorkerRegistrationInfo> reg = registerJob->GetRegistration();
RefPtr<ServiceWorkerRegistration> swr =
window->GetServiceWorkerRegistration(NS_ConvertUTF8toUTF16(reg->Scope()));
promise->MaybeResolve(swr);
}
public:
ServiceWorkerResolveWindowPromiseOnRegisterCallback(nsPIDOMWindowInner* aWindow,
Promise* aPromise)
: mPromise(aWindow, aPromise)
{}
NS_INLINE_DECL_REFCOUNTING(ServiceWorkerResolveWindowPromiseOnRegisterCallback, override)
};
namespace {
class PropagateSoftUpdateRunnable final : public Runnable
{
public:
PropagateSoftUpdateRunnable(const OriginAttributes& aOriginAttributes,
const nsAString& aScope)
: Runnable("dom::ServiceWorkerManager::PropagateSoftUpdateRunnable")
, mOriginAttributes(aOriginAttributes)
, mScope(aScope)
{}
NS_IMETHOD Run() override
{
MOZ_ASSERT(NS_IsMainThread());
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (swm) {
swm->PropagateSoftUpdate(mOriginAttributes, mScope);
}
return NS_OK;
}
private:
~PropagateSoftUpdateRunnable()
{}
const OriginAttributes mOriginAttributes;
const nsString mScope;
};
class PromiseResolverCallback final : public ServiceWorkerUpdateFinishCallback
{
public:
PromiseResolverCallback(ServiceWorkerUpdateFinishCallback* aCallback,
GenericPromise::Private* aPromise)
: mCallback(aCallback)
, mPromise(aPromise)
{
MOZ_DIAGNOSTIC_ASSERT(mPromise);
}
void UpdateSucceeded(ServiceWorkerRegistrationInfo* aInfo) override
{
MOZ_DIAGNOSTIC_ASSERT(mPromise);
if (mCallback) {
mCallback->UpdateSucceeded(aInfo);
}
MaybeResolve();
}
void UpdateFailed(ErrorResult& aStatus) override
{
MOZ_DIAGNOSTIC_ASSERT(mPromise);
if (mCallback) {
mCallback->UpdateFailed(aStatus);
}
MaybeResolve();
}
private:
~PromiseResolverCallback()
{
MaybeResolve();
}
void
MaybeResolve()
{
if (mPromise) {
mPromise->Resolve(true, __func__);
mPromise = nullptr;
}
}
RefPtr<ServiceWorkerUpdateFinishCallback> mCallback;
RefPtr<GenericPromise::Private> mPromise;
};
// This runnable is used for 2 different tasks:
// - to postpone the SoftUpdate() until the IPC SWM actor is created
// (aInternalMethod == false)
// - to call the 'real' SoftUpdate when the ServiceWorkerUpdaterChild is
// notified by the parent (aInternalMethod == true)
class SoftUpdateRunnable final : public CancelableRunnable
{
public:
SoftUpdateRunnable(const OriginAttributes& aOriginAttributes,
const nsACString& aScope,
bool aInternalMethod,
GenericPromise::Private* aPromise)
: CancelableRunnable("dom::ServiceWorkerManager::SoftUpdateRunnable")
, mAttrs(aOriginAttributes)
, mScope(aScope)
, mInternalMethod(aInternalMethod)
, mPromise(aPromise)
{}
NS_IMETHOD Run() override
{
MOZ_ASSERT(NS_IsMainThread());
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (!swm) {
return NS_ERROR_FAILURE;
}
if (mInternalMethod) {
RefPtr<PromiseResolverCallback> callback =
new PromiseResolverCallback(nullptr, mPromise);
mPromise = nullptr;
swm->SoftUpdateInternal(mAttrs, mScope, callback);
} else {
swm->SoftUpdate(mAttrs, mScope);
}
return NS_OK;
}
nsresult
Cancel() override
{
mPromise = nullptr;
return NS_OK;
}
private:
~SoftUpdateRunnable()
{
if (mPromise) {
mPromise->Resolve(true, __func__);
}
}
const OriginAttributes mAttrs;
const nsCString mScope;
bool mInternalMethod;
RefPtr<GenericPromise::Private> mPromise;
};
// This runnable is used for 3 different tasks:
// - to postpone the Update() until the IPC SWM actor is created
// (aType == ePostpone)
// - to call the 'real' Update when the ServiceWorkerUpdaterChild is
// notified by the parent (aType == eSuccess)
// - an error must be propagated (aType == eFailure)
class UpdateRunnable final : public CancelableRunnable
{
public:
enum Type {
ePostpone,
eSuccess,
eFailure,
};
UpdateRunnable(nsIPrincipal* aPrincipal,
const nsACString& aScope,
ServiceWorkerUpdateFinishCallback* aCallback,
Type aType,
GenericPromise::Private* aPromise)
: CancelableRunnable("dom::ServiceWorkerManager::UpdateRunnable")
, mPrincipal(aPrincipal)
, mScope(aScope)
, mCallback(aCallback)
, mType(aType)
, mPromise(aPromise)
{}
NS_IMETHOD Run() override
{
MOZ_ASSERT(NS_IsMainThread());
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (!swm) {
return NS_ERROR_FAILURE;
}
if (mType == ePostpone) {
swm->Update(mPrincipal, mScope, mCallback);
return NS_OK;
}
MOZ_ASSERT(mPromise);
RefPtr<PromiseResolverCallback> callback =
new PromiseResolverCallback(mCallback, mPromise);
mPromise = nullptr;
if (mType == eSuccess) {
swm->UpdateInternal(mPrincipal, mScope, callback);
return NS_OK;
}
ErrorResult error(NS_ERROR_DOM_ABORT_ERR);
callback->UpdateFailed(error);
return NS_OK;
}
nsresult
Cancel() override
{
mPromise = nullptr;
return NS_OK;
}
private:
~UpdateRunnable()
{
if (mPromise) {
mPromise->Resolve(true, __func__);
}
}
nsCOMPtr<nsIPrincipal> mPrincipal;
const nsCString mScope;
RefPtr<ServiceWorkerUpdateFinishCallback> mCallback;
Type mType;
RefPtr<GenericPromise::Private> mPromise;
};
class ResolvePromiseRunnable final : public CancelableRunnable
{
public:
explicit ResolvePromiseRunnable(GenericPromise::Private* aPromise)
: CancelableRunnable("dom::ServiceWorkerManager::ResolvePromiseRunnable")
, mPromise(aPromise)
{}
NS_IMETHOD
Run() override
{
MaybeResolve();
return NS_OK;
}
nsresult
Cancel() override
{
mPromise = nullptr;
return NS_OK;
}
private:
~ResolvePromiseRunnable()
{
MaybeResolve();
}
void
MaybeResolve()
{
if (mPromise) {
mPromise->Resolve(true, __func__);
mPromise = nullptr;
}
}
RefPtr<GenericPromise::Private> mPromise;
};
} // namespace
// This function implements parts of the step 3 of the following algorithm:
// https://w3c.github.io/webappsec/specs/powerfulfeatures/#settings-secure
static bool
IsFromAuthenticatedOrigin(nsIDocument* aDoc)
{
MOZ_ASSERT(aDoc);
nsCOMPtr<nsIDocument> doc(aDoc);
nsCOMPtr<nsIContentSecurityManager> csm = do_GetService(NS_CONTENTSECURITYMANAGER_CONTRACTID);
if (NS_WARN_IF(!csm)) {
return false;
}
while (doc && !nsContentUtils::IsChromeDoc(doc)) {
bool trustworthyOrigin = false;
// The origin of the document may be different from the document URI
// itself. Check the principal, not the document URI itself.
nsCOMPtr<nsIPrincipal> documentPrincipal = doc->NodePrincipal();
// The check for IsChromeDoc() above should mean we never see a system
// principal inside the loop.
MOZ_ASSERT(!nsContentUtils::IsSystemPrincipal(documentPrincipal));
csm->IsOriginPotentiallyTrustworthy(documentPrincipal, &trustworthyOrigin);
if (!trustworthyOrigin) {
return false;
}
doc = doc->GetParentDocument();
}
return true;
}
// If we return an error code here, the ServiceWorkerContainer will
// automatically reject the Promise.
NS_IMETHODIMP
ServiceWorkerManager::Register(mozIDOMWindow* aWindow,
nsIURI* aScopeURI,
nsIURI* aScriptURI,
uint16_t aUpdateViaCache,
nsISupports** aPromise)
{
MOZ_ASSERT(NS_IsMainThread());
if (NS_WARN_IF(!aWindow)) {
return NS_ERROR_DOM_INVALID_STATE_ERR;
}
auto* window = nsPIDOMWindowInner::From(aWindow);
nsCOMPtr<nsIDocument> doc = window->GetExtantDoc();
MOZ_ASSERT(doc);
// Don't allow a service worker to be registered if storage is restricted
// for the window.
auto storageAllowed = nsContentUtils::StorageAllowedForWindow(window);
if (storageAllowed != nsContentUtils::StorageAccess::eAllow) {
NS_ConvertUTF8toUTF16 reportScope(aScopeURI->GetSpecOrDefault());
const char16_t* param[] = { reportScope.get() };
nsContentUtils::ReportToConsole(nsIScriptError::errorFlag,
NS_LITERAL_CSTRING("Service Workers"), doc,
nsContentUtils::eDOM_PROPERTIES,
"ServiceWorkerRegisterStorageError", param,
1);
return NS_ERROR_DOM_SECURITY_ERR;
}
// Don't allow service workers to register when the *document* is chrome.
if (NS_WARN_IF(nsContentUtils::IsSystemPrincipal(doc->NodePrincipal()))) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsCOMPtr<nsPIDOMWindowOuter> outerWindow = window->GetOuterWindow();
bool serviceWorkersTestingEnabled =
outerWindow->GetServiceWorkersTestingEnabled();
bool authenticatedOrigin;
if (DOMPrefs::ServiceWorkersTestingEnabled() ||
serviceWorkersTestingEnabled) {
authenticatedOrigin = true;
} else {
authenticatedOrigin = IsFromAuthenticatedOrigin(doc);
}
if (!authenticatedOrigin) {
NS_WARNING("ServiceWorker registration from insecure websites is not allowed.");
return NS_ERROR_DOM_SECURITY_ERR;
}
// Data URLs are not allowed.
nsCOMPtr<nsIPrincipal> documentPrincipal = doc->NodePrincipal();
nsresult rv = documentPrincipal->CheckMayLoad(aScriptURI, true /* report */,
false /* allowIfInheritsPrincipal */);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NS_ERROR_DOM_SECURITY_ERR;
}
// Check content policy.
int16_t decision = nsIContentPolicy::ACCEPT;
rv = NS_CheckContentLoadPolicy(nsIContentPolicy::TYPE_INTERNAL_SERVICE_WORKER,
aScriptURI,
documentPrincipal, // loading principal
documentPrincipal, // triggering principal
doc,
EmptyCString(),
nullptr,
&decision);
NS_ENSURE_SUCCESS(rv, rv);
if (NS_WARN_IF(decision != nsIContentPolicy::ACCEPT)) {
return NS_ERROR_CONTENT_BLOCKED;
}
rv = documentPrincipal->CheckMayLoad(aScopeURI, true /* report */,
false /* allowIfInheritsPrinciple */);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NS_ERROR_DOM_SECURITY_ERR;
}
// The IsOriginPotentiallyTrustworthy() check allows file:// and possibly other
// URI schemes. We need to explicitly only allows http and https schemes.
// Note, we just use the aScriptURI here for the check since its already
// been verified as same origin with the document principal. This also
// is a good block against accidentally allowing blob: script URIs which
// might inherit the origin.
bool isHttp = false;
bool isHttps = false;
aScriptURI->SchemeIs("http", &isHttp);
aScriptURI->SchemeIs("https", &isHttps);
if (NS_WARN_IF(!isHttp && !isHttps)) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsCString cleanedScope;
rv = aScopeURI->GetSpecIgnoringRef(cleanedScope);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NS_ERROR_FAILURE;
}
nsAutoCString spec;
rv = aScriptURI->GetSpecIgnoringRef(spec);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
nsCOMPtr<nsIGlobalObject> sgo = do_QueryInterface(window);
ErrorResult result;
RefPtr<Promise> promise = Promise::Create(sgo, result);
if (result.Failed()) {
return result.StealNSResult();
}
nsAutoCString scopeKey;
rv = PrincipalToScopeKey(documentPrincipal, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
window->NoteCalledRegisterForServiceWorkerScope(cleanedScope);
RefPtr<ServiceWorkerJobQueue> queue = GetOrCreateJobQueue(scopeKey,
cleanedScope);
RefPtr<ServiceWorkerResolveWindowPromiseOnRegisterCallback> cb =
new ServiceWorkerResolveWindowPromiseOnRegisterCallback(window, promise);
nsCOMPtr<nsILoadGroup> docLoadGroup = doc->GetDocumentLoadGroup();
RefPtr<WorkerLoadInfo::InterfaceRequestor> ir =
new WorkerLoadInfo::InterfaceRequestor(documentPrincipal, docLoadGroup);
ir->MaybeAddTabChild(docLoadGroup);
// Create a load group that is separate from, yet related to, the document's load group.
// This allows checks for interfaces like nsILoadContext to yield the values used by the
// the document, yet will not cancel the update job if the document's load group is cancelled.
nsCOMPtr<nsILoadGroup> loadGroup = do_CreateInstance(NS_LOADGROUP_CONTRACTID);
MOZ_ALWAYS_SUCCEEDS(loadGroup->SetNotificationCallbacks(ir));
RefPtr<ServiceWorkerRegisterJob> job = new ServiceWorkerRegisterJob(
documentPrincipal, cleanedScope, spec, loadGroup,
static_cast<ServiceWorkerUpdateViaCache>(aUpdateViaCache)
);
job->AppendResultCallback(cb);
queue->ScheduleJob(job);
MOZ_ASSERT(NS_IsMainThread());
Telemetry::Accumulate(Telemetry::SERVICE_WORKER_REGISTRATIONS, 1);
promise.forget(aPromise);
return NS_OK;
}
/*
* Implements the async aspects of the getRegistrations algorithm.
*/
class GetRegistrationsRunnable final : public Runnable
{
nsCOMPtr<nsPIDOMWindowInner> mWindow;
RefPtr<Promise> mPromise;
public:
GetRegistrationsRunnable(nsPIDOMWindowInner* aWindow, Promise* aPromise)
: Runnable("dom::ServiceWorkerManager::GetRegistrationsRunnable")
, mWindow(aWindow)
, mPromise(aPromise)
{}
NS_IMETHOD
Run() override
{
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (!swm) {
mPromise->MaybeReject(NS_ERROR_UNEXPECTED);
return NS_OK;
}
nsIDocument* doc = mWindow->GetExtantDoc();
if (!doc) {
mPromise->MaybeReject(NS_ERROR_UNEXPECTED);
return NS_OK;
}
nsCOMPtr<nsIURI> docURI = doc->GetDocumentURI();
if (!docURI) {
mPromise->MaybeReject(NS_ERROR_UNEXPECTED);
return NS_OK;
}
nsCOMPtr<nsIPrincipal> principal = doc->NodePrincipal();
if (!principal) {
mPromise->MaybeReject(NS_ERROR_UNEXPECTED);
return NS_OK;
}
nsTArray<RefPtr<ServiceWorkerRegistration>> array;
if (NS_WARN_IF(!BasePrincipal::Cast(principal)->IsCodebasePrincipal())) {
return NS_OK;
}
nsAutoCString scopeKey;
nsresult rv = swm->PrincipalToScopeKey(principal, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
ServiceWorkerManager::RegistrationDataPerPrincipal* data;
if (!swm->mRegistrationInfos.Get(scopeKey, &data)) {
mPromise->MaybeResolve(array);
return NS_OK;
}
for (uint32_t i = 0; i < data->mOrderedScopes.Length(); ++i) {
RefPtr<ServiceWorkerRegistrationInfo> info =
data->mInfos.GetWeak(data->mOrderedScopes[i]);
if (info->IsPendingUninstall()) {
continue;
}
NS_ConvertUTF8toUTF16 scope(data->mOrderedScopes[i]);
nsCOMPtr<nsIURI> scopeURI;
nsresult rv = NS_NewURI(getter_AddRefs(scopeURI), scope, nullptr, nullptr);
if (NS_WARN_IF(NS_FAILED(rv))) {
mPromise->MaybeReject(rv);
break;
}
rv = principal->CheckMayLoad(scopeURI, true /* report */,
false /* allowIfInheritsPrincipal */);
if (NS_WARN_IF(NS_FAILED(rv))) {
continue;
}
RefPtr<ServiceWorkerRegistration> swr =
mWindow->GetServiceWorkerRegistration(scope);
array.AppendElement(swr);
}
mPromise->MaybeResolve(array);
return NS_OK;
}
};
// If we return an error code here, the ServiceWorkerContainer will
// automatically reject the Promise.
NS_IMETHODIMP
ServiceWorkerManager::GetRegistrations(mozIDOMWindow* aWindow,
nsISupports** aPromise)
{
MOZ_ASSERT(NS_IsMainThread());
if (NS_WARN_IF(!aWindow)) {
return NS_ERROR_DOM_INVALID_STATE_ERR;
}
auto* window = nsPIDOMWindowInner::From(aWindow);
// Don't allow a service worker to access service worker registrations
// from a window with storage disabled. If these windows can access
// the registration it increases the chance they can bypass the storage
// block via postMessage(), etc.
auto storageAllowed = nsContentUtils::StorageAllowedForWindow(window);
if (storageAllowed != nsContentUtils::StorageAccess::eAllow) {
nsCOMPtr<nsIDocument> doc = window->GetExtantDoc();
nsContentUtils::ReportToConsole(nsIScriptError::errorFlag,
NS_LITERAL_CSTRING("Service Workers"), doc,
nsContentUtils::eDOM_PROPERTIES,
"ServiceWorkerGetRegistrationStorageError");
return NS_ERROR_DOM_SECURITY_ERR;
}
// Don't allow service workers to register when the *document* is chrome for
// now.
MOZ_ASSERT(!nsContentUtils::IsSystemPrincipal(window->GetExtantDoc()->NodePrincipal()));
nsCOMPtr<nsIGlobalObject> sgo = do_QueryInterface(window);
ErrorResult result;
RefPtr<Promise> promise = Promise::Create(sgo, result);
if (result.Failed()) {
return result.StealNSResult();
}
nsCOMPtr<nsIRunnable> runnable =
new GetRegistrationsRunnable(window, promise);
promise.forget(aPromise);
return NS_DispatchToCurrentThread(runnable);
}
/*
* Implements the async aspects of the getRegistration algorithm.
*/
class GetRegistrationRunnable final : public Runnable
{
nsCOMPtr<nsPIDOMWindowInner> mWindow;
RefPtr<Promise> mPromise;
nsString mDocumentURL;
public:
GetRegistrationRunnable(nsPIDOMWindowInner* aWindow,
Promise* aPromise,
const nsAString& aDocumentURL)
: Runnable("dom::ServiceWorkerManager::GetRegistrationRunnable")
, mWindow(aWindow)
, mPromise(aPromise)
, mDocumentURL(aDocumentURL)
{}
NS_IMETHOD
Run() override
{
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (!swm) {
mPromise->MaybeReject(NS_ERROR_UNEXPECTED);
return NS_OK;
}
nsIDocument* doc = mWindow->GetExtantDoc();
if (!doc) {
mPromise->MaybeReject(NS_ERROR_UNEXPECTED);
return NS_OK;
}
nsCOMPtr<nsIURI> docURI = doc->GetDocumentURI();
if (!docURI) {
mPromise->MaybeReject(NS_ERROR_UNEXPECTED);
return NS_OK;
}
nsCOMPtr<nsIURI> uri;
nsresult rv = NS_NewURI(getter_AddRefs(uri), mDocumentURL, nullptr, docURI);
if (NS_WARN_IF(NS_FAILED(rv))) {
mPromise->MaybeReject(rv);
return NS_OK;
}
nsCOMPtr<nsIPrincipal> principal = doc->NodePrincipal();
if (!principal) {
mPromise->MaybeReject(NS_ERROR_UNEXPECTED);
return NS_OK;
}
rv = principal->CheckMayLoad(uri, true /* report */,
false /* allowIfInheritsPrinciple */);
if (NS_FAILED(rv)) {
mPromise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
return NS_OK;
}
RefPtr<ServiceWorkerRegistrationInfo> registration =
swm->GetServiceWorkerRegistrationInfo(principal, uri);
if (!registration) {
mPromise->MaybeResolveWithUndefined();
return NS_OK;
}
NS_ConvertUTF8toUTF16 scope(registration->Scope());
RefPtr<ServiceWorkerRegistration> swr =
mWindow->GetServiceWorkerRegistration(scope);
mPromise->MaybeResolve(swr);
return NS_OK;
}
};
// If we return an error code here, the ServiceWorkerContainer will
// automatically reject the Promise.
NS_IMETHODIMP
ServiceWorkerManager::GetRegistration(mozIDOMWindow* aWindow,
const nsAString& aDocumentURL,
nsISupports** aPromise)
{
MOZ_ASSERT(NS_IsMainThread());
if (NS_WARN_IF(!aWindow)) {
return NS_ERROR_DOM_INVALID_STATE_ERR;
}
auto* window = nsPIDOMWindowInner::From(aWindow);
// Don't allow a service worker to access service worker registrations
// from a window with storage disabled. If these windows can access
// the registration it increases the chance they can bypass the storage
// block via postMessage(), etc.
auto storageAllowed = nsContentUtils::StorageAllowedForWindow(window);
if (storageAllowed != nsContentUtils::StorageAccess::eAllow) {
nsCOMPtr<nsIDocument> doc = window->GetExtantDoc();
nsContentUtils::ReportToConsole(nsIScriptError::errorFlag,
NS_LITERAL_CSTRING("Service Workers"), doc,
nsContentUtils::eDOM_PROPERTIES,
"ServiceWorkerGetRegistrationStorageError");
return NS_ERROR_DOM_SECURITY_ERR;
}
// Don't allow service workers to register when the *document* is chrome for
// now.
MOZ_ASSERT(!nsContentUtils::IsSystemPrincipal(window->GetExtantDoc()->NodePrincipal()));
nsCOMPtr<nsIGlobalObject> sgo = do_QueryInterface(window);
ErrorResult result;
RefPtr<Promise> promise = Promise::Create(sgo, result);
if (result.Failed()) {
return result.StealNSResult();
}
nsCOMPtr<nsIRunnable> runnable =
new GetRegistrationRunnable(window, promise, aDocumentURL);
promise.forget(aPromise);
return NS_DispatchToCurrentThread(runnable);
}
class GetReadyPromiseRunnable final : public Runnable
{
nsCOMPtr<nsPIDOMWindowInner> mWindow;
RefPtr<Promise> mPromise;
public:
GetReadyPromiseRunnable(nsPIDOMWindowInner* aWindow, Promise* aPromise)
: Runnable("dom::ServiceWorkerManager::GetReadyPromiseRunnable")
, mWindow(aWindow)
, mPromise(aPromise)
{}
NS_IMETHOD
Run() override
{
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (!swm) {
mPromise->MaybeReject(NS_ERROR_UNEXPECTED);
return NS_OK;
}
nsIDocument* doc = mWindow->GetExtantDoc();
if (!doc) {
mPromise->MaybeReject(NS_ERROR_UNEXPECTED);
return NS_OK;
}
nsCOMPtr<nsIURI> docURI = doc->GetDocumentURI();
if (!docURI) {
mPromise->MaybeReject(NS_ERROR_UNEXPECTED);
return NS_OK;
}
if (!swm->CheckReadyPromise(mWindow, docURI, mPromise)) {
swm->StorePendingReadyPromise(mWindow, docURI, mPromise);
}
return NS_OK;
}
};
NS_IMETHODIMP
ServiceWorkerManager::SendPushEvent(const nsACString& aOriginAttributes,
const nsACString& aScope,
uint32_t aDataLength,
uint8_t* aDataBytes,
uint8_t optional_argc)
{
if (optional_argc == 2) {
nsTArray<uint8_t> data;
if (!data.InsertElementsAt(0, aDataBytes, aDataLength, fallible)) {
return NS_ERROR_OUT_OF_MEMORY;
}
return SendPushEvent(aOriginAttributes, aScope, EmptyString(), Some(data));
}
MOZ_ASSERT(optional_argc == 0);
return SendPushEvent(aOriginAttributes, aScope, EmptyString(), Nothing());
}
nsresult
ServiceWorkerManager::SendPushEvent(const nsACString& aOriginAttributes,
const nsACString& aScope,
const nsAString& aMessageId,
const Maybe<nsTArray<uint8_t>>& aData)
{
OriginAttributes attrs;
if (!attrs.PopulateFromSuffix(aOriginAttributes)) {
return NS_ERROR_INVALID_ARG;
}
ServiceWorkerInfo* serviceWorker = GetActiveWorkerInfoForScope(attrs, aScope);
if (NS_WARN_IF(!serviceWorker)) {
return NS_ERROR_FAILURE;
}
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetRegistration(serviceWorker->Principal(), aScope);
MOZ_DIAGNOSTIC_ASSERT(registration);
return serviceWorker->WorkerPrivate()->SendPushEvent(aMessageId, aData,
registration);
}
NS_IMETHODIMP
ServiceWorkerManager::SendPushSubscriptionChangeEvent(const nsACString& aOriginAttributes,
const nsACString& aScope)
{
OriginAttributes attrs;
if (!attrs.PopulateFromSuffix(aOriginAttributes)) {
return NS_ERROR_INVALID_ARG;
}
ServiceWorkerInfo* info = GetActiveWorkerInfoForScope(attrs, aScope);
if (!info) {
return NS_ERROR_FAILURE;
}
return info->WorkerPrivate()->SendPushSubscriptionChangeEvent();
}
nsresult
ServiceWorkerManager::SendNotificationEvent(const nsAString& aEventName,
const nsACString& aOriginSuffix,
const nsACString& aScope,
const nsAString& aID,
const nsAString& aTitle,
const nsAString& aDir,
const nsAString& aLang,
const nsAString& aBody,
const nsAString& aTag,
const nsAString& aIcon,
const nsAString& aData,
const nsAString& aBehavior)
{
OriginAttributes attrs;
if (!attrs.PopulateFromSuffix(aOriginSuffix)) {
return NS_ERROR_INVALID_ARG;
}
ServiceWorkerInfo* info = GetActiveWorkerInfoForScope(attrs, aScope);
if (!info) {
return NS_ERROR_FAILURE;
}
ServiceWorkerPrivate* workerPrivate = info->WorkerPrivate();
return workerPrivate->SendNotificationEvent(aEventName, aID, aTitle, aDir,
aLang, aBody, aTag,
aIcon, aData, aBehavior,
NS_ConvertUTF8toUTF16(aScope));
}
NS_IMETHODIMP
ServiceWorkerManager::SendNotificationClickEvent(const nsACString& aOriginSuffix,
const nsACString& aScope,
const nsAString& aID,
const nsAString& aTitle,
const nsAString& aDir,
const nsAString& aLang,
const nsAString& aBody,
const nsAString& aTag,
const nsAString& aIcon,
const nsAString& aData,
const nsAString& aBehavior)
{
return SendNotificationEvent(NS_LITERAL_STRING(NOTIFICATION_CLICK_EVENT_NAME),
aOriginSuffix, aScope, aID, aTitle, aDir, aLang,
aBody, aTag, aIcon, aData, aBehavior);
}
NS_IMETHODIMP
ServiceWorkerManager::SendNotificationCloseEvent(const nsACString& aOriginSuffix,
const nsACString& aScope,
const nsAString& aID,
const nsAString& aTitle,
const nsAString& aDir,
const nsAString& aLang,
const nsAString& aBody,
const nsAString& aTag,
const nsAString& aIcon,
const nsAString& aData,
const nsAString& aBehavior)
{
return SendNotificationEvent(NS_LITERAL_STRING(NOTIFICATION_CLOSE_EVENT_NAME),
aOriginSuffix, aScope, aID, aTitle, aDir, aLang,
aBody, aTag, aIcon, aData, aBehavior);
}
NS_IMETHODIMP
ServiceWorkerManager::GetReadyPromise(mozIDOMWindow* aWindow,
nsISupports** aPromise)
{
MOZ_ASSERT(NS_IsMainThread());
if (NS_WARN_IF(!aWindow)) {
return NS_ERROR_DOM_INVALID_STATE_ERR;
}
auto* window = nsPIDOMWindowInner::From(aWindow);
nsCOMPtr<nsIDocument> doc = window->GetExtantDoc();
if (NS_WARN_IF(!doc)) {
return NS_ERROR_FAILURE;
}
// Don't allow service workers to register when the *document* is chrome for
// now.
MOZ_ASSERT(!nsContentUtils::IsSystemPrincipal(doc->NodePrincipal()));
MOZ_ASSERT(!mPendingReadyPromises.Contains(window));
nsCOMPtr<nsIGlobalObject> sgo = do_QueryInterface(window);
ErrorResult result;
RefPtr<Promise> promise = Promise::Create(sgo, result);
if (result.Failed()) {
return result.StealNSResult();
}
nsCOMPtr<nsIRunnable> runnable =
new GetReadyPromiseRunnable(window, promise);
promise.forget(aPromise);
return NS_DispatchToCurrentThread(runnable);
}
NS_IMETHODIMP
ServiceWorkerManager::RemoveReadyPromise(mozIDOMWindow* aWindow)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWindow);
if (!aWindow) {
return NS_ERROR_FAILURE;
}
mPendingReadyPromises.Remove(aWindow);
return NS_OK;
}
void
ServiceWorkerManager::StorePendingReadyPromise(nsPIDOMWindowInner* aWindow,
nsIURI* aURI,
Promise* aPromise)
{
PendingReadyPromise* data;
// We should not have 2 pending promises for the same window.
MOZ_ASSERT(!mPendingReadyPromises.Get(aWindow, &data));
data = new PendingReadyPromise(aURI, aPromise);
mPendingReadyPromises.Put(aWindow, data);
}
void
ServiceWorkerManager::CheckPendingReadyPromises()
{
for (auto iter = mPendingReadyPromises.Iter(); !iter.Done(); iter.Next()) {
nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(iter.Key());
MOZ_ASSERT(window);
nsAutoPtr<PendingReadyPromise>& pendingReadyPromise = iter.Data();
if (CheckReadyPromise(window, pendingReadyPromise->mURI,
pendingReadyPromise->mPromise)) {
iter.Remove();
}
}
}
bool
ServiceWorkerManager::CheckReadyPromise(nsPIDOMWindowInner* aWindow,
nsIURI* aURI, Promise* aPromise)
{
MOZ_ASSERT(aWindow);
MOZ_ASSERT(aURI);
nsCOMPtr<nsIDocument> doc = aWindow->GetExtantDoc();
MOZ_ASSERT(doc);
nsCOMPtr<nsIPrincipal> principal = doc->NodePrincipal();
MOZ_ASSERT(principal);
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetServiceWorkerRegistrationInfo(principal, aURI);
if (registration && registration->GetActive()) {
NS_ConvertUTF8toUTF16 scope(registration->Scope());
RefPtr<ServiceWorkerRegistration> swr =
aWindow->GetServiceWorkerRegistration(scope);
aPromise->MaybeResolve(swr);
return true;
}
return false;
}
ServiceWorkerInfo*
ServiceWorkerManager::GetActiveWorkerInfoForScope(const OriginAttributes& aOriginAttributes,
const nsACString& aScope)
{
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIURI> scopeURI;
nsresult rv = NS_NewURI(getter_AddRefs(scopeURI), aScope, nullptr, nullptr);
if (NS_FAILED(rv)) {
return nullptr;
}
nsCOMPtr<nsIPrincipal> principal =
BasePrincipal::CreateCodebasePrincipal(scopeURI, aOriginAttributes);
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetServiceWorkerRegistrationInfo(principal, scopeURI);
if (!registration) {
return nullptr;
}
return registration->GetActive();
}
ServiceWorkerInfo*
ServiceWorkerManager::GetActiveWorkerInfoForDocument(nsIDocument* aDocument)
{
MOZ_ASSERT(NS_IsMainThread());
Maybe<ClientInfo> clientInfo(aDocument->GetClientInfo());
if (clientInfo.isNothing()) {
return nullptr;
}
RefPtr<ServiceWorkerRegistrationInfo> registration;
GetClientRegistration(clientInfo.ref(), getter_AddRefs(registration));
if (!registration) {
return nullptr;
}
return registration->GetActive();
}
namespace {
class UnregisterJobCallback final : public ServiceWorkerJob::Callback
{
nsCOMPtr<nsIServiceWorkerUnregisterCallback> mCallback;
~UnregisterJobCallback()
{
}
public:
explicit UnregisterJobCallback(nsIServiceWorkerUnregisterCallback* aCallback)
: mCallback(aCallback)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mCallback);
}
void
JobFinished(ServiceWorkerJob* aJob, ErrorResult& aStatus) override
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aJob);
if (aStatus.Failed()) {
mCallback->UnregisterFailed();
return;
}
MOZ_ASSERT(aJob->GetType() == ServiceWorkerJob::Type::Unregister);
RefPtr<ServiceWorkerUnregisterJob> unregisterJob =
static_cast<ServiceWorkerUnregisterJob*>(aJob);
mCallback->UnregisterSucceeded(unregisterJob->GetResult());
}
NS_INLINE_DECL_REFCOUNTING(UnregisterJobCallback, override)
};
} // anonymous namespace
NS_IMETHODIMP
ServiceWorkerManager::Unregister(nsIPrincipal* aPrincipal,
nsIServiceWorkerUnregisterCallback* aCallback,
const nsAString& aScope)
{
MOZ_ASSERT(NS_IsMainThread());
if (!aPrincipal) {
return NS_ERROR_FAILURE;
}
nsresult rv;
// This is not accessible by content, and callers should always ensure scope is
// a correct URI, so this is wrapped in DEBUG
#ifdef DEBUG
nsCOMPtr<nsIURI> scopeURI;
rv = NS_NewURI(getter_AddRefs(scopeURI), aScope, nullptr, nullptr);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NS_ERROR_DOM_SECURITY_ERR;
}
#endif
nsAutoCString scopeKey;
rv = PrincipalToScopeKey(aPrincipal, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
NS_ConvertUTF16toUTF8 scope(aScope);
RefPtr<ServiceWorkerJobQueue> queue = GetOrCreateJobQueue(scopeKey, scope);
RefPtr<ServiceWorkerUnregisterJob> job =
new ServiceWorkerUnregisterJob(aPrincipal, scope, true /* send to parent */);
if (aCallback) {
RefPtr<UnregisterJobCallback> cb = new UnregisterJobCallback(aCallback);
job->AppendResultCallback(cb);
}
queue->ScheduleJob(job);
return NS_OK;
}
nsresult
ServiceWorkerManager::NotifyUnregister(nsIPrincipal* aPrincipal,
const nsAString& aScope)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aPrincipal);
nsresult rv;
// This is not accessible by content, and callers should always ensure scope is
// a correct URI, so this is wrapped in DEBUG
#ifdef DEBUG
nsCOMPtr<nsIURI> scopeURI;
rv = NS_NewURI(getter_AddRefs(scopeURI), aScope, nullptr, nullptr);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
#endif
nsAutoCString scopeKey;
rv = PrincipalToScopeKey(aPrincipal, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
NS_ConvertUTF16toUTF8 scope(aScope);
RefPtr<ServiceWorkerJobQueue> queue = GetOrCreateJobQueue(scopeKey, scope);
RefPtr<ServiceWorkerUnregisterJob> job =
new ServiceWorkerUnregisterJob(aPrincipal, scope,
false /* send to parent */);
queue->ScheduleJob(job);
return NS_OK;
}
void
ServiceWorkerManager::WorkerIsIdle(ServiceWorkerInfo* aWorker)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_DIAGNOSTIC_ASSERT(aWorker);
RefPtr<ServiceWorkerRegistrationInfo> reg =
GetRegistration(aWorker->Principal(), aWorker->Scope());
if (!reg) {
return;
}
if (reg->GetActive() != aWorker) {
return;
}
if (!reg->IsControllingClients() && reg->IsPendingUninstall()) {
RemoveRegistration(reg);
return;
}
reg->TryToActivateAsync();
}
already_AddRefed<ServiceWorkerJobQueue>
ServiceWorkerManager::GetOrCreateJobQueue(const nsACString& aKey,
const nsACString& aScope)
{
MOZ_ASSERT(!aKey.IsEmpty());
ServiceWorkerManager::RegistrationDataPerPrincipal* data;
// XXX we could use LookupForAdd here to avoid a hashtable lookup, except that
// leads to a false positive assertion, see bug 1370674 comment 7.
if (!mRegistrationInfos.Get(aKey, &data)) {
data = new RegistrationDataPerPrincipal();
mRegistrationInfos.Put(aKey, data);
}
RefPtr<ServiceWorkerJobQueue> queue =
data->mJobQueues.LookupForAdd(aScope).OrInsert(
[]() { return new ServiceWorkerJobQueue(); });
return queue.forget();
}
/* static */
already_AddRefed<ServiceWorkerManager>
ServiceWorkerManager::GetInstance()
{
// Note: We don't simply check gInstance for null-ness here, since otherwise
// this can resurrect the ServiceWorkerManager pretty late during shutdown.
static bool firstTime = true;
if (firstTime) {
RefPtr<ServiceWorkerRegistrar> swr;
// Don't create the ServiceWorkerManager until the ServiceWorkerRegistrar is
// initialized.
if (XRE_IsParentProcess()) {
swr = ServiceWorkerRegistrar::Get();
if (!swr) {
return nullptr;
}
}
firstTime = false;
MOZ_ASSERT(NS_IsMainThread());
gInstance = new ServiceWorkerManager();
gInstance->Init(swr);
ClearOnShutdown(&gInstance);
}
RefPtr<ServiceWorkerManager> copy = gInstance.get();
return copy.forget();
}
void
ServiceWorkerManager::FinishFetch(ServiceWorkerRegistrationInfo* aRegistration)
{
}
void
ServiceWorkerManager::ReportToAllClients(const nsCString& aScope,
const nsString& aMessage,
const nsString& aFilename,
const nsString& aLine,
uint32_t aLineNumber,
uint32_t aColumnNumber,
uint32_t aFlags)
{
ConsoleUtils::ReportForServiceWorkerScope(NS_ConvertUTF8toUTF16(aScope),
aMessage,
aFilename,
aLineNumber,
aColumnNumber,
ConsoleUtils::eError);
}
/* static */
void
ServiceWorkerManager::LocalizeAndReportToAllClients(
const nsCString& aScope,
const char* aStringKey,
const nsTArray<nsString>& aParamArray,
uint32_t aFlags,
const nsString& aFilename,
const nsString& aLine,
uint32_t aLineNumber,
uint32_t aColumnNumber)
{
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (!swm) {
return;
}
nsresult rv;
nsAutoString message;
rv = nsContentUtils::FormatLocalizedString(nsContentUtils::eDOM_PROPERTIES,
aStringKey, aParamArray, message);
if (NS_SUCCEEDED(rv)) {
swm->ReportToAllClients(aScope, message,
aFilename, aLine, aLineNumber, aColumnNumber,
aFlags);
} else {
NS_WARNING("Failed to format and therefore report localized error.");
}
}
void
ServiceWorkerManager::HandleError(JSContext* aCx,
nsIPrincipal* aPrincipal,
const nsCString& aScope,
const nsString& aWorkerURL,
const nsString& aMessage,
const nsString& aFilename,
const nsString& aLine,
uint32_t aLineNumber,
uint32_t aColumnNumber,
uint32_t aFlags,
JSExnType aExnType)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aPrincipal);
nsAutoCString scopeKey;
nsresult rv = PrincipalToScopeKey(aPrincipal, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
ServiceWorkerManager::RegistrationDataPerPrincipal* data;
if (NS_WARN_IF(!mRegistrationInfos.Get(scopeKey, &data))) {
return;
}
// Always report any uncaught exceptions or errors to the console of
// each client.
ReportToAllClients(aScope, aMessage, aFilename, aLine, aLineNumber,
aColumnNumber, aFlags);
}
void
ServiceWorkerManager::LoadRegistration(
const ServiceWorkerRegistrationData& aRegistration)
{
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIPrincipal> principal =
PrincipalInfoToPrincipal(aRegistration.principal());
if (!principal) {
return;
}
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetRegistration(principal, aRegistration.scope());
if (!registration) {
registration =
CreateNewRegistration(
aRegistration.scope(),
principal,
static_cast<ServiceWorkerUpdateViaCache>(aRegistration.updateViaCache())
);
} else {
// If active worker script matches our expectations for a "current worker",
// then we are done. Since scripts with the same URL might have different
// contents such as updated scripts or scripts with different LoadFlags, we
// use the CacheName to judje whether the two scripts are identical, where
// the CacheName is an UUID generated when a new script is found.
if (registration->GetActive() &&
registration->GetActive()->CacheName() == aRegistration.cacheName()) {
// No needs for updates.
return;
}
}
registration->SetLastUpdateTime(aRegistration.lastUpdateTime());
nsLoadFlags importsLoadFlags = nsIChannel::LOAD_BYPASS_SERVICE_WORKER;
importsLoadFlags |=
aRegistration.updateViaCache() == static_cast<uint16_t>(ServiceWorkerUpdateViaCache::None)
? nsIRequest::LOAD_NORMAL
: nsIRequest::VALIDATE_ALWAYS;
const nsCString& currentWorkerURL = aRegistration.currentWorkerURL();
if (!currentWorkerURL.IsEmpty()) {
registration->SetActive(
new ServiceWorkerInfo(registration->Principal(),
registration->Scope(),
currentWorkerURL,
aRegistration.cacheName(),
importsLoadFlags));
registration->GetActive()->SetHandlesFetch(aRegistration.currentWorkerHandlesFetch());
registration->GetActive()->SetInstalledTime(aRegistration.currentWorkerInstalledTime());
registration->GetActive()->SetActivatedTime(aRegistration.currentWorkerActivatedTime());
}
}
void
ServiceWorkerManager::LoadRegistrations(
const nsTArray<ServiceWorkerRegistrationData>& aRegistrations)
{
MOZ_ASSERT(NS_IsMainThread());
for (uint32_t i = 0, len = aRegistrations.Length(); i < len; ++i) {
LoadRegistration(aRegistrations[i]);
}
}
void
ServiceWorkerManager::StoreRegistration(
nsIPrincipal* aPrincipal,
ServiceWorkerRegistrationInfo* aRegistration)
{
MOZ_ASSERT(aPrincipal);
MOZ_ASSERT(aRegistration);
if (mShuttingDown) {
return;
}
ServiceWorkerRegistrationData data;
nsresult rv = PopulateRegistrationData(aPrincipal, aRegistration, data);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
PrincipalInfo principalInfo;
if (NS_WARN_IF(NS_FAILED(PrincipalToPrincipalInfo(aPrincipal,
&principalInfo)))) {
return;
}
mActor->SendRegister(data);
}
already_AddRefed<ServiceWorkerRegistrationInfo>
ServiceWorkerManager::GetServiceWorkerRegistrationInfo(nsPIDOMWindowInner* aWindow)
{
MOZ_ASSERT(aWindow);
nsCOMPtr<nsIDocument> document = aWindow->GetExtantDoc();
return GetServiceWorkerRegistrationInfo(document);
}
already_AddRefed<ServiceWorkerRegistrationInfo>
ServiceWorkerManager::GetServiceWorkerRegistrationInfo(nsIDocument* aDoc)
{
MOZ_ASSERT(aDoc);
nsCOMPtr<nsIURI> documentURI = aDoc->GetDocumentURI();
nsCOMPtr<nsIPrincipal> principal = aDoc->NodePrincipal();
RefPtr<ServiceWorkerRegistrationInfo> reg =
GetServiceWorkerRegistrationInfo(principal, documentURI);
if (reg) {
auto storageAllowed = nsContentUtils::StorageAllowedForDocument(aDoc);
if (storageAllowed != nsContentUtils::StorageAccess::eAllow) {
reg = nullptr;
}
}
return reg.forget();
}
already_AddRefed<ServiceWorkerRegistrationInfo>
ServiceWorkerManager::GetServiceWorkerRegistrationInfo(nsIPrincipal* aPrincipal,
nsIURI* aURI)
{
MOZ_ASSERT(aPrincipal);
MOZ_ASSERT(aURI);
//XXXnsm Temporary fix until Bug 1171432 is fixed.
if (NS_WARN_IF(BasePrincipal::Cast(aPrincipal)->AppId() == nsIScriptSecurityManager::UNKNOWN_APP_ID)) {
return nullptr;
}
nsAutoCString scopeKey;
nsresult rv = PrincipalToScopeKey(aPrincipal, scopeKey);
if (NS_FAILED(rv)) {
return nullptr;
}
return GetServiceWorkerRegistrationInfo(scopeKey, aURI);
}
already_AddRefed<ServiceWorkerRegistrationInfo>
ServiceWorkerManager::GetServiceWorkerRegistrationInfo(const nsACString& aScopeKey,
nsIURI* aURI)
{
MOZ_ASSERT(aURI);
nsAutoCString spec;
nsresult rv = aURI->GetSpec(spec);
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
nsAutoCString scope;
RegistrationDataPerPrincipal* data;
if (!FindScopeForPath(aScopeKey, spec, &data, scope)) {
return nullptr;
}
MOZ_ASSERT(data);
RefPtr<ServiceWorkerRegistrationInfo> registration;
data->mInfos.Get(scope, getter_AddRefs(registration));
// ordered scopes and registrations better be in sync.
MOZ_ASSERT(registration);
#ifdef DEBUG
nsAutoCString origin;
rv = registration->Principal()->GetOrigin(origin);
MOZ_ASSERT(NS_SUCCEEDED(rv));
MOZ_ASSERT(origin.Equals(aScopeKey));
#endif
if (registration->IsPendingUninstall()) {
return nullptr;
}
return registration.forget();
}
/* static */ nsresult
ServiceWorkerManager::PrincipalToScopeKey(nsIPrincipal* aPrincipal,
nsACString& aKey)
{
MOZ_ASSERT(aPrincipal);
if (!BasePrincipal::Cast(aPrincipal)->IsCodebasePrincipal()) {
return NS_ERROR_FAILURE;
}
nsresult rv = aPrincipal->GetOrigin(aKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
/* static */ nsresult
ServiceWorkerManager::PrincipalInfoToScopeKey(const PrincipalInfo& aPrincipalInfo,
nsACString& aKey)
{
if (aPrincipalInfo.type() != PrincipalInfo::TContentPrincipalInfo) {
return NS_ERROR_FAILURE;
}
auto content = aPrincipalInfo.get_ContentPrincipalInfo();
nsAutoCString suffix;
content.attrs().CreateSuffix(suffix);
aKey = content.originNoSuffix();
aKey.Append(suffix);
return NS_OK;
}
/* static */ void
ServiceWorkerManager::AddScopeAndRegistration(const nsACString& aScope,
ServiceWorkerRegistrationInfo* aInfo)
{
MOZ_ASSERT(aInfo);
MOZ_ASSERT(aInfo->Principal());
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (!swm) {
// browser shutdown
return;
}
nsAutoCString scopeKey;
nsresult rv = swm->PrincipalToScopeKey(aInfo->Principal(), scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
MOZ_ASSERT(!scopeKey.IsEmpty());
RegistrationDataPerPrincipal* data =
swm->mRegistrationInfos.LookupForAdd(scopeKey).OrInsert(
[]() { return new RegistrationDataPerPrincipal(); });
for (uint32_t i = 0; i < data->mOrderedScopes.Length(); ++i) {
const nsCString& current = data->mOrderedScopes[i];
// Perfect match!
if (aScope.Equals(current)) {
data->mInfos.Put(aScope, aInfo);
swm->NotifyListenersOnRegister(aInfo);
return;
}
// Sort by length, with longest match first.
// /foo/bar should be before /foo/
// Similarly /foo/b is between the two.
if (StringBeginsWith(aScope, current)) {
data->mOrderedScopes.InsertElementAt(i, aScope);
data->mInfos.Put(aScope, aInfo);
swm->NotifyListenersOnRegister(aInfo);
return;
}
}
data->mOrderedScopes.AppendElement(aScope);
data->mInfos.Put(aScope, aInfo);
swm->NotifyListenersOnRegister(aInfo);
}
/* static */ bool
ServiceWorkerManager::FindScopeForPath(const nsACString& aScopeKey,
const nsACString& aPath,
RegistrationDataPerPrincipal** aData,
nsACString& aMatch)
{
MOZ_ASSERT(aData);
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (!swm || !swm->mRegistrationInfos.Get(aScopeKey, aData)) {
return false;
}
for (uint32_t i = 0; i < (*aData)->mOrderedScopes.Length(); ++i) {
const nsCString& current = (*aData)->mOrderedScopes[i];
if (StringBeginsWith(aPath, current)) {
aMatch = current;
return true;
}
}
return false;
}
/* static */ bool
ServiceWorkerManager::HasScope(nsIPrincipal* aPrincipal,
const nsACString& aScope)
{
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (!swm) {
return false;
}
nsAutoCString scopeKey;
nsresult rv = PrincipalToScopeKey(aPrincipal, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return false;
}
RegistrationDataPerPrincipal* data;
if (!swm->mRegistrationInfos.Get(scopeKey, &data)) {
return false;
}
return data->mOrderedScopes.Contains(aScope);
}
/* static */ void
ServiceWorkerManager::RemoveScopeAndRegistration(ServiceWorkerRegistrationInfo* aRegistration)
{
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (!swm) {
return;
}
nsAutoCString scopeKey;
nsresult rv = swm->PrincipalToScopeKey(aRegistration->Principal(), scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
RegistrationDataPerPrincipal* data;
if (!swm->mRegistrationInfos.Get(scopeKey, &data)) {
return;
}
if (auto entry = data->mUpdateTimers.Lookup(aRegistration->Scope())) {
entry.Data()->Cancel();
entry.Remove();
}
// Verify there are no controlled clients for the purged registration.
for (auto iter = swm->mControlledClients.Iter(); !iter.Done(); iter.Next()) {
auto& reg = iter.UserData()->mRegistrationInfo;
if (reg->Scope().Equals(aRegistration->Scope()) &&
reg->Principal()->Equals(aRegistration->Principal())) {
MOZ_DIAGNOSTIC_ASSERT(false,
"controlled client when removing registration");
iter.Remove();
break;
}
}
RefPtr<ServiceWorkerRegistrationInfo> info;
data->mInfos.Remove(aRegistration->Scope(), getter_AddRefs(info));
data->mOrderedScopes.RemoveElement(aRegistration->Scope());
swm->NotifyListenersOnUnregister(info);
swm->MaybeRemoveRegistrationInfo(scopeKey);
swm->NotifyServiceWorkerRegistrationRemoved(aRegistration);
}
void
ServiceWorkerManager::MaybeRemoveRegistrationInfo(const nsACString& aScopeKey)
{
if (auto entry = mRegistrationInfos.Lookup(aScopeKey)) {
if (entry.Data()->mOrderedScopes.IsEmpty() &&
entry.Data()->mJobQueues.Count() == 0) {
entry.Remove();
}
}
}
bool
ServiceWorkerManager::StartControlling(const ClientInfo& aClientInfo,
const ServiceWorkerDescriptor& aServiceWorker)
{
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIPrincipal> principal =
PrincipalInfoToPrincipal(aServiceWorker.PrincipalInfo());
NS_ENSURE_TRUE(principal, false);
nsCOMPtr<nsIURI> scope;
nsresult rv =
NS_NewURI(getter_AddRefs(scope), aServiceWorker.Scope(), nullptr, nullptr);
NS_ENSURE_SUCCESS(rv, false);
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetServiceWorkerRegistrationInfo(principal, scope);
NS_ENSURE_TRUE(registration, false);
StartControllingClient(aClientInfo, registration);
return true;
}
void
ServiceWorkerManager::MaybeCheckNavigationUpdate(const ClientInfo& aClientInfo)
{
MOZ_ASSERT(NS_IsMainThread());
// We perform these success path navigation update steps when the
// document tells us its more or less done loading. This avoids
// slowing down page load and also lets pages consistently get
// updatefound events when they fire.
//
// 9.8.20 If respondWithEntered is false, then:
// 9.8.22 Else: (respondWith was entered and succeeded)
// If request is a non-subresource request, then: Invoke Soft Update
// algorithm.
ControlledClientData* data = mControlledClients.Get(aClientInfo.Id());
if (data && data->mRegistrationInfo) {
data->mRegistrationInfo->MaybeScheduleUpdate();
}
}
void
ServiceWorkerManager::StopControllingRegistration(ServiceWorkerRegistrationInfo* aRegistration)
{
aRegistration->StopControllingClient();
if (aRegistration->IsControllingClients() || !aRegistration->IsIdle()) {
return;
}
if (aRegistration->IsPendingUninstall()) {
RemoveRegistration(aRegistration);
return;
}
// We use to aggressively terminate the worker at this point, but it
// caused problems. There are more uses for a service worker than actively
// controlled documents. We need to let the worker naturally terminate
// in case its handling push events, message events, etc.
aRegistration->TryToActivateAsync();
}
NS_IMETHODIMP
ServiceWorkerManager::GetScopeForUrl(nsIPrincipal* aPrincipal,
const nsAString& aUrl, nsAString& aScope)
{
MOZ_ASSERT(aPrincipal);
nsCOMPtr<nsIURI> uri;
nsresult rv = NS_NewURI(getter_AddRefs(uri), aUrl, nullptr, nullptr);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NS_ERROR_FAILURE;
}
RefPtr<ServiceWorkerRegistrationInfo> r =
GetServiceWorkerRegistrationInfo(aPrincipal, uri);
if (!r) {
return NS_ERROR_FAILURE;
}
aScope = NS_ConvertUTF8toUTF16(r->Scope());
return NS_OK;
}
NS_IMETHODIMP
ServiceWorkerManager::AddRegistrationEventListener(const nsAString& aScope,
ServiceWorkerRegistrationListener* aListener)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aListener);
#ifdef DEBUG
// Ensure a registration is only listening for it's own scope.
nsAutoString regScope;
aListener->GetScope(regScope);
MOZ_ASSERT(!regScope.IsEmpty());
MOZ_ASSERT(aScope.Equals(regScope));
#endif
MOZ_ASSERT(!mServiceWorkerRegistrationListeners.Contains(aListener));
mServiceWorkerRegistrationListeners.AppendElement(aListener);
return NS_OK;
}
NS_IMETHODIMP
ServiceWorkerManager::RemoveRegistrationEventListener(const nsAString& aScope,
ServiceWorkerRegistrationListener* aListener)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aListener);
#ifdef DEBUG
// Ensure a registration is unregistering for it's own scope.
nsAutoString regScope;
aListener->GetScope(regScope);
MOZ_ASSERT(!regScope.IsEmpty());
MOZ_ASSERT(aScope.Equals(regScope));
#endif
MOZ_ASSERT(mServiceWorkerRegistrationListeners.Contains(aListener));
mServiceWorkerRegistrationListeners.RemoveElement(aListener);
return NS_OK;
}
void
ServiceWorkerManager::FireUpdateFoundOnServiceWorkerRegistrations(
ServiceWorkerRegistrationInfo* aRegistration)
{
MOZ_ASSERT(NS_IsMainThread());
nsTObserverArray<ServiceWorkerRegistrationListener*>::ForwardIterator it(mServiceWorkerRegistrationListeners);
while (it.HasMore()) {
RefPtr<ServiceWorkerRegistrationListener> target = it.GetNext();
nsAutoString regScope;
target->GetScope(regScope);
MOZ_ASSERT(!regScope.IsEmpty());
NS_ConvertUTF16toUTF8 utf8Scope(regScope);
if (utf8Scope.Equals(aRegistration->Scope())) {
target->UpdateFound();
}
}
}
/*
* This is used for installing, waiting and active.
*/
nsresult
ServiceWorkerManager::GetServiceWorkerForScope(nsPIDOMWindowInner* aWindow,
const nsAString& aScope,
WhichServiceWorker aWhichWorker,
nsISupports** aServiceWorker)
{
MOZ_ASSERT(NS_IsMainThread());
if (NS_WARN_IF(!aWindow)) {
return NS_ERROR_DOM_INVALID_STATE_ERR;
}
nsCOMPtr<nsIDocument> doc = aWindow->GetExtantDoc();
MOZ_ASSERT(doc);
///////////////////////////////////////////
// Security check
nsAutoCString scope = NS_ConvertUTF16toUTF8(aScope);
nsCOMPtr<nsIURI> scopeURI;
// We pass nullptr as the base URI since scopes obtained from
// ServiceWorkerRegistrations MUST be fully qualified URIs.
nsresult rv = NS_NewURI(getter_AddRefs(scopeURI), scope, nullptr, nullptr);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsCOMPtr<nsIPrincipal> documentPrincipal = doc->NodePrincipal();
rv = documentPrincipal->CheckMayLoad(scopeURI, true /* report */,
false /* allowIfInheritsPrinciple */);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NS_ERROR_DOM_SECURITY_ERR;
}
////////////////////////////////////////////
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetRegistration(documentPrincipal, scope);
if (NS_WARN_IF(!registration)) {
return NS_ERROR_FAILURE;
}
RefPtr<ServiceWorkerInfo> info;
if (aWhichWorker == WhichServiceWorker::INSTALLING_WORKER) {
info = registration->GetInstalling();
} else if (aWhichWorker == WhichServiceWorker::WAITING_WORKER) {
info = registration->GetWaiting();
} else if (aWhichWorker == WhichServiceWorker::ACTIVE_WORKER) {
info = registration->GetActive();
} else {
MOZ_CRASH("Invalid worker type");
}
if (NS_WARN_IF(!info)) {
return NS_ERROR_DOM_NOT_FOUND_ERR;
}
RefPtr<ServiceWorker> serviceWorker =
aWindow->GetOrCreateServiceWorker(info->Descriptor());
serviceWorker->SetState(info->State());
serviceWorker.forget(aServiceWorker);
return NS_OK;
}
namespace {
class ContinueDispatchFetchEventRunnable : public Runnable
{
RefPtr<ServiceWorkerPrivate> mServiceWorkerPrivate;
nsCOMPtr<nsIInterceptedChannel> mChannel;
nsCOMPtr<nsILoadGroup> mLoadGroup;
bool mIsReload;
public:
ContinueDispatchFetchEventRunnable(
ServiceWorkerPrivate* aServiceWorkerPrivate,
nsIInterceptedChannel* aChannel,
nsILoadGroup* aLoadGroup,
bool aIsReload)
: Runnable("dom::ServiceWorkerManager::ContinueDispatchFetchEventRunnable")
, mServiceWorkerPrivate(aServiceWorkerPrivate)
, mChannel(aChannel)
, mLoadGroup(aLoadGroup)
, mIsReload(aIsReload)
{
MOZ_ASSERT(aServiceWorkerPrivate);
MOZ_ASSERT(aChannel);
}
void
HandleError()
{
MOZ_ASSERT(NS_IsMainThread());
NS_WARNING("Unexpected error while dispatching fetch event!");
nsresult rv = mChannel->ResetInterception();
if (NS_FAILED(rv)) {
NS_WARNING("Failed to resume intercepted network request");
mChannel->CancelInterception(rv);
}
}
NS_IMETHOD
Run() override
{
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIChannel> channel;
nsresult rv = mChannel->GetChannel(getter_AddRefs(channel));
if (NS_WARN_IF(NS_FAILED(rv))) {
HandleError();
return NS_OK;
}
// The channel might have encountered an unexpected error while ensuring
// the upload stream is cloneable. Check here and reset the interception
// if that happens.
nsresult status;
rv = channel->GetStatus(&status);
if (NS_WARN_IF(NS_FAILED(rv) || NS_FAILED(status))) {
HandleError();
return NS_OK;
}
nsString clientId;
nsCOMPtr<nsILoadInfo> loadInfo = channel->GetLoadInfo();
if (loadInfo) {
Maybe<ClientInfo> clientInfo = loadInfo->GetClientInfo();
if (clientInfo.isSome()) {
char buf[NSID_LENGTH];
clientInfo.ref().Id().ToProvidedString(buf);
CopyUTF8toUTF16(nsDependentCString(buf), clientId);
}
}
rv = mServiceWorkerPrivate->SendFetchEvent(mChannel, mLoadGroup, clientId,
mIsReload);
if (NS_WARN_IF(NS_FAILED(rv))) {
HandleError();
}
return NS_OK;
}
};
} // anonymous namespace
void
ServiceWorkerManager::DispatchFetchEvent(nsIInterceptedChannel* aChannel,
ErrorResult& aRv)
{
MOZ_ASSERT(aChannel);
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIChannel> internalChannel;
aRv = aChannel->GetChannel(getter_AddRefs(internalChannel));
if (NS_WARN_IF(aRv.Failed())) {
return;
}
nsCOMPtr<nsILoadGroup> loadGroup;
aRv = internalChannel->GetLoadGroup(getter_AddRefs(loadGroup));
if (NS_WARN_IF(aRv.Failed())) {
return;
}
nsCOMPtr<nsILoadInfo> loadInfo = internalChannel->GetLoadInfo();
if (NS_WARN_IF(!loadInfo)) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return;
}
RefPtr<ServiceWorkerInfo> serviceWorker;
if (!nsContentUtils::IsNonSubresourceRequest(internalChannel)) {
const Maybe<ServiceWorkerDescriptor>& controller = loadInfo->GetController();
if (NS_WARN_IF(controller.isNothing())) {
aRv.Throw(NS_ERROR_FAILURE);
return;
}
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetRegistration(controller.ref().PrincipalInfo(), controller.ref().Scope());
if (NS_WARN_IF(!registration)) {
aRv.Throw(NS_ERROR_FAILURE);
return;
}
serviceWorker = registration->GetActive();
if (NS_WARN_IF(!serviceWorker) ||
NS_WARN_IF(serviceWorker->Descriptor().Id() != controller.ref().Id())) {
aRv.Throw(NS_ERROR_FAILURE);
return;
}
} else {
nsCOMPtr<nsIURI> uri;
aRv = aChannel->GetSecureUpgradedChannelURI(getter_AddRefs(uri));
if (NS_WARN_IF(aRv.Failed())) {
return;
}
// non-subresource request means the URI contains the principal
nsCOMPtr<nsIPrincipal> principal =
BasePrincipal::CreateCodebasePrincipal(uri,
loadInfo->GetOriginAttributes());
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetServiceWorkerRegistrationInfo(principal, uri);
if (NS_WARN_IF(!registration)) {
aRv.Throw(NS_ERROR_FAILURE);
return;
}
// While we only enter this method if IsAvailable() previously saw
// an active worker, it is possible for that worker to be removed
// before we get to this point. Therefore we must handle a nullptr
// active worker here.
serviceWorker = registration->GetActive();
if (NS_WARN_IF(!serviceWorker)) {
aRv.Throw(NS_ERROR_FAILURE);
return;
}
// If there is a reserved client it should be marked as controlled before
// the FetchEvent is dispatched.
Maybe<ClientInfo> clientInfo = loadInfo->GetReservedClientInfo();
// Also override the initial about:blank controller since the real
// network load may be intercepted by a different service worker. If
// the intial about:blank has a controller here its simply been
// inherited from its parent.
if (clientInfo.isNothing()) {
clientInfo = loadInfo->GetInitialClientInfo();
// TODO: We need to handle the case where the initial about:blank is
// controlled, but the final document load is not. Right now
// the spec does not really say what to do. There currently
// is no way for the controller to be cleared from a client in
// the spec or our implementation. We may want to force a
// new inner window to be created instead of reusing the
// initial about:blank global. See bug 1419620 and the spec
// issue here: https://github.com/w3c/ServiceWorker/issues/1232
}
if (clientInfo.isSome()) {
// First, attempt to mark the reserved client controlled directly. This
// will update the controlled status in the ClientManagerService in the
// parent. It will also eventually propagate back to the ClientSource.
StartControllingClient(clientInfo.ref(), registration);
}
// But we also note the reserved state on the LoadInfo. This allows the
// ClientSource to be updated immediately after the nsIChannel starts.
// This is necessary to have the correct controller in place for immediate
// follow-on requests.
loadInfo->SetController(serviceWorker->Descriptor());
}
MOZ_DIAGNOSTIC_ASSERT(serviceWorker);
nsCOMPtr<nsIRunnable> continueRunnable =
new ContinueDispatchFetchEventRunnable(serviceWorker->WorkerPrivate(),
aChannel, loadGroup,
loadInfo->GetIsDocshellReload());
// When this service worker was registered, we also sent down the permissions
// for the runnable. They should have arrived by now, but we still need to
// wait for them if they have not.
nsCOMPtr<nsIRunnable> permissionsRunnable = NS_NewRunnableFunction(
"dom::ServiceWorkerManager::DispatchFetchEvent", [=]() {
nsCOMPtr<nsIPermissionManager> permMgr = services::GetPermissionManager();
MOZ_ALWAYS_SUCCEEDS(permMgr->WhenPermissionsAvailable(serviceWorker->Principal(),
continueRunnable));
});
nsCOMPtr<nsIUploadChannel2> uploadChannel = do_QueryInterface(internalChannel);
// If there is no upload stream, then continue immediately
if (!uploadChannel) {
MOZ_ALWAYS_SUCCEEDS(permissionsRunnable->Run());
return;
}
// Otherwise, ensure the upload stream can be cloned directly. This may
// require some async copying, so provide a callback.
aRv = uploadChannel->EnsureUploadStreamIsCloneable(permissionsRunnable);
}
bool
ServiceWorkerManager::IsAvailable(nsIPrincipal* aPrincipal,
nsIURI* aURI)
{
MOZ_ASSERT(aPrincipal);
MOZ_ASSERT(aURI);
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetServiceWorkerRegistrationInfo(aPrincipal, aURI);
return registration && registration->GetActive();
}
nsresult
ServiceWorkerManager::GetClientRegistration(const ClientInfo& aClientInfo,
ServiceWorkerRegistrationInfo** aRegistrationInfo)
{
ControlledClientData* data = mControlledClients.Get(aClientInfo.Id());
if (!data || !data->mRegistrationInfo) {
return NS_ERROR_NOT_AVAILABLE;
}
// If the document is controlled, the current worker MUST be non-null.
if (!data->mRegistrationInfo->GetActive()) {
return NS_ERROR_NOT_AVAILABLE;
}
RefPtr<ServiceWorkerRegistrationInfo> ref = data->mRegistrationInfo;
ref.forget(aRegistrationInfo);
return NS_OK;
}
NS_IMETHODIMP
ServiceWorkerManager::GetInstalling(nsPIDOMWindowInner* aWindow,
const nsAString& aScope,
nsISupports** aServiceWorker)
{
return GetServiceWorkerForScope(aWindow, aScope,
WhichServiceWorker::INSTALLING_WORKER,
aServiceWorker);
}
NS_IMETHODIMP
ServiceWorkerManager::GetWaiting(nsPIDOMWindowInner* aWindow,
const nsAString& aScope,
nsISupports** aServiceWorker)
{
return GetServiceWorkerForScope(aWindow, aScope,
WhichServiceWorker::WAITING_WORKER,
aServiceWorker);
}
NS_IMETHODIMP
ServiceWorkerManager::GetActive(nsPIDOMWindowInner* aWindow,
const nsAString& aScope,
nsISupports** aServiceWorker)
{
return GetServiceWorkerForScope(aWindow, aScope,
WhichServiceWorker::ACTIVE_WORKER,
aServiceWorker);
}
void
ServiceWorkerManager::TransitionServiceWorkerRegistrationWorker(ServiceWorkerRegistrationInfo* aRegistration,
WhichServiceWorker aWhichOne)
{
MOZ_ASSERT(NS_IsMainThread());
nsTObserverArray<ServiceWorkerRegistrationListener*>::ForwardIterator it(mServiceWorkerRegistrationListeners);
while (it.HasMore()) {
RefPtr<ServiceWorkerRegistrationListener> target = it.GetNext();
nsAutoString regScope;
target->GetScope(regScope);
MOZ_ASSERT(!regScope.IsEmpty());
NS_ConvertUTF16toUTF8 utf8Scope(regScope);
if (utf8Scope.Equals(aRegistration->Scope())) {
target->TransitionWorker(aWhichOne);
}
}
}
void
ServiceWorkerManager::InvalidateServiceWorkerRegistrationWorker(ServiceWorkerRegistrationInfo* aRegistration,
WhichServiceWorker aWhichOnes)
{
MOZ_ASSERT(NS_IsMainThread());
nsTObserverArray<ServiceWorkerRegistrationListener*>::ForwardIterator it(mServiceWorkerRegistrationListeners);
while (it.HasMore()) {
RefPtr<ServiceWorkerRegistrationListener> target = it.GetNext();
nsAutoString regScope;
target->GetScope(regScope);
MOZ_ASSERT(!regScope.IsEmpty());
NS_ConvertUTF16toUTF8 utf8Scope(regScope);
if (utf8Scope.Equals(aRegistration->Scope())) {
target->InvalidateWorkers(aWhichOnes);
}
}
}
void
ServiceWorkerManager::NotifyServiceWorkerRegistrationRemoved(ServiceWorkerRegistrationInfo* aRegistration)
{
MOZ_ASSERT(NS_IsMainThread());
nsTObserverArray<ServiceWorkerRegistrationListener*>::ForwardIterator it(mServiceWorkerRegistrationListeners);
while (it.HasMore()) {
RefPtr<ServiceWorkerRegistrationListener> target = it.GetNext();
nsAutoString regScope;
target->GetScope(regScope);
MOZ_ASSERT(!regScope.IsEmpty());
NS_ConvertUTF16toUTF8 utf8Scope(regScope);
if (utf8Scope.Equals(aRegistration->Scope())) {
target->RegistrationRemoved();
}
}
}
void
ServiceWorkerManager::SoftUpdate(const OriginAttributes& aOriginAttributes,
const nsACString& aScope)
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown) {
return;
}
RefPtr<GenericPromise::Private> promise =
new GenericPromise::Private(__func__);
RefPtr<CancelableRunnable> successRunnable =
new SoftUpdateRunnable(aOriginAttributes, aScope, true, promise);
RefPtr<CancelableRunnable> failureRunnable =
new ResolvePromiseRunnable(promise);
ServiceWorkerUpdaterChild* actor =
new ServiceWorkerUpdaterChild(promise, successRunnable, failureRunnable);
mActor->SendPServiceWorkerUpdaterConstructor(actor, aOriginAttributes,
nsCString(aScope));
}
namespace {
class UpdateJobCallback final : public ServiceWorkerJob::Callback
{
RefPtr<ServiceWorkerUpdateFinishCallback> mCallback;
~UpdateJobCallback() = default;
public:
explicit UpdateJobCallback(ServiceWorkerUpdateFinishCallback* aCallback)
: mCallback(aCallback)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mCallback);
}
void
JobFinished(ServiceWorkerJob* aJob, ErrorResult& aStatus) override
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aJob);
if (aStatus.Failed()) {
mCallback->UpdateFailed(aStatus);
return;
}
MOZ_DIAGNOSTIC_ASSERT(aJob->GetType() == ServiceWorkerJob::Type::Update);
RefPtr<ServiceWorkerUpdateJob> updateJob =
static_cast<ServiceWorkerUpdateJob*>(aJob);
RefPtr<ServiceWorkerRegistrationInfo> reg = updateJob->GetRegistration();
mCallback->UpdateSucceeded(reg);
}
NS_INLINE_DECL_REFCOUNTING(UpdateJobCallback, override)
};
} // anonymous namespace
void
ServiceWorkerManager::SoftUpdateInternal(const OriginAttributes& aOriginAttributes,
const nsACString& aScope,
ServiceWorkerUpdateFinishCallback* aCallback)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aCallback);
if (mShuttingDown) {
return;
}
nsCOMPtr<nsIURI> scopeURI;
nsresult rv = NS_NewURI(getter_AddRefs(scopeURI), aScope);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
nsCOMPtr<nsIPrincipal> principal =
BasePrincipal::CreateCodebasePrincipal(scopeURI, aOriginAttributes);
if (NS_WARN_IF(!principal)) {
return;
}
nsAutoCString scopeKey;
rv = PrincipalToScopeKey(principal, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetRegistration(scopeKey, aScope);
if (NS_WARN_IF(!registration)) {
return;
}
// "If registration's uninstalling flag is set, abort these steps."
if (registration->IsPendingUninstall()) {
return;
}
// "If registration's installing worker is not null, abort these steps."
if (registration->GetInstalling()) {
return;
}
// "Let newestWorker be the result of running Get Newest Worker algorithm
// passing registration as its argument.
// If newestWorker is null, abort these steps."
RefPtr<ServiceWorkerInfo> newest = registration->Newest();
if (!newest) {
return;
}
// "If the registration queue for registration is empty, invoke Update algorithm,
// or its equivalent, with client, registration as its argument."
// TODO(catalinb): We don't implement the force bypass cache flag.
// See: https://github.com/slightlyoff/ServiceWorker/issues/759
RefPtr<ServiceWorkerJobQueue> queue = GetOrCreateJobQueue(scopeKey,
aScope);
RefPtr<ServiceWorkerUpdateJob> job =
new ServiceWorkerUpdateJob(principal, registration->Scope(),
newest->ScriptSpec(), nullptr,
registration->GetUpdateViaCache());
RefPtr<UpdateJobCallback> cb = new UpdateJobCallback(aCallback);
job->AppendResultCallback(cb);
queue->ScheduleJob(job);
}
void
ServiceWorkerManager::Update(nsIPrincipal* aPrincipal,
const nsACString& aScope,
ServiceWorkerUpdateFinishCallback* aCallback)
{
MOZ_ASSERT(NS_IsMainThread());
RefPtr<GenericPromise::Private> promise =
new GenericPromise::Private(__func__);
RefPtr<CancelableRunnable> successRunnable =
new UpdateRunnable(aPrincipal, aScope, aCallback,
UpdateRunnable::eSuccess, promise);
RefPtr<CancelableRunnable> failureRunnable =
new UpdateRunnable(aPrincipal, aScope, aCallback,
UpdateRunnable::eFailure, promise);
ServiceWorkerUpdaterChild* actor =
new ServiceWorkerUpdaterChild(promise, successRunnable, failureRunnable);
mActor->SendPServiceWorkerUpdaterConstructor(actor,
aPrincipal->OriginAttributesRef(),
nsCString(aScope));
}
void
ServiceWorkerManager::UpdateInternal(nsIPrincipal* aPrincipal,
const nsACString& aScope,
ServiceWorkerUpdateFinishCallback* aCallback)
{
MOZ_ASSERT(aPrincipal);
MOZ_ASSERT(aCallback);
nsAutoCString scopeKey;
nsresult rv = PrincipalToScopeKey(aPrincipal, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetRegistration(scopeKey, aScope);
if (NS_WARN_IF(!registration)) {
return;
}
// "Let newestWorker be the result of running Get Newest Worker algorithm
// passing registration as its argument.
// If newestWorker is null, return a promise rejected with "InvalidStateError"
RefPtr<ServiceWorkerInfo> newest = registration->Newest();
if (!newest) {
ErrorResult error(NS_ERROR_DOM_INVALID_STATE_ERR);
aCallback->UpdateFailed(error);
// In case the callback does not consume the exception
error.SuppressException();
return;
}
RefPtr<ServiceWorkerJobQueue> queue = GetOrCreateJobQueue(scopeKey, aScope);
// "Invoke Update algorithm, or its equivalent, with client, registration as
// its argument."
RefPtr<ServiceWorkerUpdateJob> job =
new ServiceWorkerUpdateJob(aPrincipal, registration->Scope(),
newest->ScriptSpec(), nullptr,
registration->GetUpdateViaCache());
RefPtr<UpdateJobCallback> cb = new UpdateJobCallback(aCallback);
job->AppendResultCallback(cb);
queue->ScheduleJob(job);
}
already_AddRefed<GenericPromise>
ServiceWorkerManager::MaybeClaimClient(nsIDocument* aDocument,
ServiceWorkerRegistrationInfo* aWorkerRegistration)
{
MOZ_DIAGNOSTIC_ASSERT(aWorkerRegistration);
MOZ_DIAGNOSTIC_ASSERT(aWorkerRegistration->GetActive());
RefPtr<GenericPromise> ref;
// Same origin check
if (!aWorkerRegistration->Principal()->Equals(aDocument->NodePrincipal())) {
ref = GenericPromise::CreateAndReject(NS_ERROR_DOM_SECURITY_ERR, __func__);
return ref.forget();
}
Maybe<ClientInfo> clientInfo(aDocument->GetClientInfo());
if (NS_WARN_IF(clientInfo.isNothing())) {
ref = GenericPromise::CreateAndReject(NS_ERROR_DOM_INVALID_STATE_ERR,
__func__);
return ref.forget();
}
// The registration that should be controlling the client
RefPtr<ServiceWorkerRegistrationInfo> matchingRegistration =
GetServiceWorkerRegistrationInfo(aDocument);
// The registration currently controlling the client
RefPtr<ServiceWorkerRegistrationInfo> controllingRegistration;
GetClientRegistration(clientInfo.ref(),
getter_AddRefs(controllingRegistration));
if (aWorkerRegistration != matchingRegistration ||
aWorkerRegistration == controllingRegistration) {
ref = GenericPromise::CreateAndResolve(true, __func__);
return ref.forget();
}
ref = StartControllingClient(clientInfo.ref(), aWorkerRegistration);
return ref.forget();
}
already_AddRefed<GenericPromise>
ServiceWorkerManager::MaybeClaimClient(nsIDocument* aDoc,
const ServiceWorkerDescriptor& aServiceWorker)
{
RefPtr<GenericPromise> ref;
nsCOMPtr<nsIPrincipal> principal =
PrincipalInfoToPrincipal(aServiceWorker.PrincipalInfo());
if (!principal) {
ref = GenericPromise::CreateAndResolve(false, __func__);
return ref.forget();
}
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetRegistration(principal, aServiceWorker.Scope());
// While ServiceWorkerManager is distributed across child processes its
// possible for us to sometimes get a claim for a new worker that has
// not propagated to this process yet. For now, simply note that we
// are done. The fix for this is to move the SWM to the parent process
// so there are no consistency errors.
if (NS_WARN_IF(!registration) || NS_WARN_IF(!registration->GetActive())) {
ref = GenericPromise::CreateAndResolve(false, __func__);
return ref.forget();
}
ref = MaybeClaimClient(aDoc, registration);
return ref.forget();
}
void
ServiceWorkerManager::SetSkipWaitingFlag(nsIPrincipal* aPrincipal,
const nsCString& aScope,
uint64_t aServiceWorkerID)
{
RefPtr<ServiceWorkerRegistrationInfo> registration =
GetRegistration(aPrincipal, aScope);
if (NS_WARN_IF(!registration)) {
return;
}
RefPtr<ServiceWorkerInfo> worker =
registration->GetServiceWorkerInfoById(aServiceWorkerID);
if (NS_WARN_IF(!worker)) {
return;
}
worker->SetSkipWaitingFlag();
if (worker->State() == ServiceWorkerState::Installed) {
registration->TryToActivateAsync();
}
}
void
ServiceWorkerManager::UpdateClientControllers(ServiceWorkerRegistrationInfo* aRegistration)
{
MOZ_ASSERT(NS_IsMainThread());
RefPtr<ServiceWorkerInfo> activeWorker = aRegistration->GetActive();
MOZ_DIAGNOSTIC_ASSERT(activeWorker);
AutoTArray<RefPtr<ClientHandle>, 16> handleList;
for (auto iter = mControlledClients.Iter(); !iter.Done(); iter.Next()) {
if (iter.UserData()->mRegistrationInfo != aRegistration) {
continue;
}
handleList.AppendElement(iter.UserData()->mClientHandle);
}
// Fire event after iterating mControlledClients is done to prevent
// modification by reentering from the event handlers during iteration.
for (auto& handle : handleList) {
handle->Control(activeWorker->Descriptor());
}
}
already_AddRefed<ServiceWorkerRegistrationInfo>
ServiceWorkerManager::GetRegistration(nsIPrincipal* aPrincipal,
const nsACString& aScope) const
{
MOZ_ASSERT(aPrincipal);
nsAutoCString scopeKey;
nsresult rv = PrincipalToScopeKey(aPrincipal, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
return GetRegistration(scopeKey, aScope);
}
already_AddRefed<ServiceWorkerRegistrationInfo>
ServiceWorkerManager::GetRegistration(const PrincipalInfo& aPrincipalInfo,
const nsACString& aScope) const
{
nsAutoCString scopeKey;
nsresult rv = PrincipalInfoToScopeKey(aPrincipalInfo, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
return GetRegistration(scopeKey, aScope);
}
NS_IMETHODIMP
ServiceWorkerManager::GetRegistrationByPrincipal(nsIPrincipal* aPrincipal,
const nsAString& aScope,
nsIServiceWorkerRegistrationInfo** aInfo)
{
MOZ_ASSERT(aPrincipal);
MOZ_ASSERT(aInfo);
nsCOMPtr<nsIURI> scopeURI;
nsresult rv = NS_NewURI(getter_AddRefs(scopeURI), aScope, nullptr, nullptr);
if (NS_FAILED(rv)) {
return NS_ERROR_FAILURE;
}
RefPtr<ServiceWorkerRegistrationInfo> info =
GetServiceWorkerRegistrationInfo(aPrincipal, scopeURI);
if (!info) {
return NS_ERROR_FAILURE;
}
info.forget(aInfo);
return NS_OK;
}
already_AddRefed<ServiceWorkerRegistrationInfo>
ServiceWorkerManager::GetRegistration(const nsACString& aScopeKey,
const nsACString& aScope) const
{
RefPtr<ServiceWorkerRegistrationInfo> reg;
RegistrationDataPerPrincipal* data;
if (!mRegistrationInfos.Get(aScopeKey, &data)) {
return reg.forget();
}
data->mInfos.Get(aScope, getter_AddRefs(reg));
return reg.forget();
}
already_AddRefed<ServiceWorkerRegistrationInfo>
ServiceWorkerManager::CreateNewRegistration(
const nsCString& aScope,
nsIPrincipal* aPrincipal,
ServiceWorkerUpdateViaCache aUpdateViaCache)
{
#ifdef DEBUG
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIURI> scopeURI;
nsresult rv = NS_NewURI(getter_AddRefs(scopeURI), aScope, nullptr, nullptr);
MOZ_ASSERT(NS_SUCCEEDED(rv));
RefPtr<ServiceWorkerRegistrationInfo> tmp =
GetRegistration(aPrincipal, aScope);
MOZ_ASSERT(!tmp);
#endif
RefPtr<ServiceWorkerRegistrationInfo> registration =
new ServiceWorkerRegistrationInfo(aScope, aPrincipal, aUpdateViaCache);
// From now on ownership of registration is with
// mServiceWorkerRegistrationInfos.
AddScopeAndRegistration(aScope, registration);
return registration.forget();
}
void
ServiceWorkerManager::MaybeRemoveRegistration(ServiceWorkerRegistrationInfo* aRegistration)
{
MOZ_ASSERT(aRegistration);
RefPtr<ServiceWorkerInfo> newest = aRegistration->Newest();
if (!newest && HasScope(aRegistration->Principal(), aRegistration->Scope())) {
RemoveRegistration(aRegistration);
}
}
void
ServiceWorkerManager::RemoveRegistration(ServiceWorkerRegistrationInfo* aRegistration)
{
// Note, we do not need to call mActor->SendUnregister() here. There are a few
// ways we can get here:
// 1) Through a normal unregister which calls SendUnregister() in the unregister
// job Start() method.
// 2) Through origin storage being purged. These result in ForceUnregister()
// starting unregister jobs which in turn call SendUnregister().
// 3) Through the failure to install a new service worker. Since we don't store
// the registration until install succeeds, we do not need to call
// SendUnregister here.
// Assert these conditions by testing for pending uninstall (cases 1 and 2) or
// null workers (case 3).
#ifdef DEBUG
RefPtr<ServiceWorkerInfo> newest = aRegistration->Newest();
MOZ_ASSERT(aRegistration->IsPendingUninstall() || !newest);
#endif
MOZ_ASSERT(HasScope(aRegistration->Principal(), aRegistration->Scope()));
// When a registration is removed, we must clear its contents since the DOM
// object may be held by content script.
aRegistration->Clear();
RemoveScopeAndRegistration(aRegistration);
}
namespace {
/**
* See toolkit/modules/sessionstore/Utils.jsm function hasRootDomain().
*
* Returns true if the |url| passed in is part of the given root |domain|.
* For example, if |url| is "www.mozilla.org", and we pass in |domain| as
* "mozilla.org", this will return true. It would return false the other way
* around.
*/
bool
HasRootDomain(nsIURI* aURI, const nsACString& aDomain)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aURI);
nsAutoCString host;
nsresult rv = aURI->GetHost(host);
if (NS_WARN_IF(NS_FAILED(rv))) {
return false;
}
nsACString::const_iterator start, end;
host.BeginReading(start);
host.EndReading(end);
if (!FindInReadable(aDomain, start, end)) {
return false;
}
if (host.Equals(aDomain)) {
return true;
}
// Beginning of the string matches, can't look at the previous char.
if (start.get() == host.BeginReading()) {
// Equals failed so this is fine.
return false;
}
char prevChar = *(--start);
return prevChar == '.';
}
} // namespace
NS_IMETHODIMP
ServiceWorkerManager::GetAllRegistrations(nsIArray** aResult)
{
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIMutableArray> array(do_CreateInstance(NS_ARRAY_CONTRACTID));
if (!array) {
return NS_ERROR_OUT_OF_MEMORY;
}
for (auto it1 = mRegistrationInfos.Iter(); !it1.Done(); it1.Next()) {
for (auto it2 = it1.UserData()->mInfos.Iter(); !it2.Done(); it2.Next()) {
ServiceWorkerRegistrationInfo* reg = it2.UserData();
MOZ_ASSERT(reg);
if (reg->IsPendingUninstall()) {
continue;
}
array->AppendElement(reg);
}
}
array.forget(aResult);
return NS_OK;
}
// MUST ONLY BE CALLED FROM Remove(), RemoveAll() and RemoveAllRegistrations()!
void
ServiceWorkerManager::ForceUnregister(RegistrationDataPerPrincipal* aRegistrationData,
ServiceWorkerRegistrationInfo* aRegistration)
{
MOZ_ASSERT(aRegistrationData);
MOZ_ASSERT(aRegistration);
RefPtr<ServiceWorkerJobQueue> queue;
aRegistrationData->mJobQueues.Get(aRegistration->Scope(), getter_AddRefs(queue));
if (queue) {
queue->CancelAll();
}
if (auto entry = aRegistrationData->mUpdateTimers.Lookup(aRegistration->Scope())) {
entry.Data()->Cancel();
entry.Remove();
}
// Since Unregister is async, it is ok to call it in an enumeration.
Unregister(aRegistration->Principal(), nullptr, NS_ConvertUTF8toUTF16(aRegistration->Scope()));
}
NS_IMETHODIMP
ServiceWorkerManager::RemoveAndPropagate(const nsACString& aHost)
{
Remove(aHost);
PropagateRemove(aHost);
return NS_OK;
}
void
ServiceWorkerManager::Remove(const nsACString& aHost)
{
MOZ_ASSERT(NS_IsMainThread());
for (auto it1 = mRegistrationInfos.Iter(); !it1.Done(); it1.Next()) {
ServiceWorkerManager::RegistrationDataPerPrincipal* data = it1.UserData();
for (auto it2 = data->mInfos.Iter(); !it2.Done(); it2.Next()) {
ServiceWorkerRegistrationInfo* reg = it2.UserData();
nsCOMPtr<nsIURI> scopeURI;
nsresult rv = NS_NewURI(getter_AddRefs(scopeURI), it2.Key(),
nullptr, nullptr);
// This way subdomains are also cleared.
if (NS_SUCCEEDED(rv) && HasRootDomain(scopeURI, aHost)) {
ForceUnregister(data, reg);
}
}
}
}
void
ServiceWorkerManager::PropagateRemove(const nsACString& aHost)
{
MOZ_ASSERT(NS_IsMainThread());
mActor->SendPropagateRemove(nsCString(aHost));
}
void
ServiceWorkerManager::RemoveAll()
{
MOZ_ASSERT(NS_IsMainThread());
for (auto it1 = mRegistrationInfos.Iter(); !it1.Done(); it1.Next()) {
ServiceWorkerManager::RegistrationDataPerPrincipal* data = it1.UserData();
for (auto it2 = data->mInfos.Iter(); !it2.Done(); it2.Next()) {
ServiceWorkerRegistrationInfo* reg = it2.UserData();
ForceUnregister(data, reg);
}
}
}
void
ServiceWorkerManager::PropagateRemoveAll()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(XRE_IsParentProcess());
mActor->SendPropagateRemoveAll();
}
void
ServiceWorkerManager::RemoveAllRegistrations(OriginAttributesPattern* aPattern)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aPattern);
for (auto it1 = mRegistrationInfos.Iter(); !it1.Done(); it1.Next()) {
ServiceWorkerManager::RegistrationDataPerPrincipal* data = it1.UserData();
// We can use iteration because ForceUnregister (and Unregister) are
// async. Otherwise doing some R/W operations on an hashtable during
// iteration will crash.
for (auto it2 = data->mInfos.Iter(); !it2.Done(); it2.Next()) {
ServiceWorkerRegistrationInfo* reg = it2.UserData();
MOZ_ASSERT(reg);
MOZ_ASSERT(reg->Principal());
bool matches =
aPattern->Matches(reg->Principal()->OriginAttributesRef());
if (!matches) {
continue;
}
ForceUnregister(data, reg);
}
}
}
NS_IMETHODIMP
ServiceWorkerManager::AddListener(nsIServiceWorkerManagerListener* aListener)
{
MOZ_ASSERT(NS_IsMainThread());
if (!aListener || mListeners.Contains(aListener)) {
return NS_ERROR_INVALID_ARG;
}
mListeners.AppendElement(aListener);
return NS_OK;
}
NS_IMETHODIMP
ServiceWorkerManager::RemoveListener(nsIServiceWorkerManagerListener* aListener)
{
MOZ_ASSERT(NS_IsMainThread());
if (!aListener || !mListeners.Contains(aListener)) {
return NS_ERROR_INVALID_ARG;
}
mListeners.RemoveElement(aListener);
return NS_OK;
}
NS_IMETHODIMP
ServiceWorkerManager::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData)
{
if (strcmp(aTopic, PURGE_SESSION_HISTORY) == 0) {
MOZ_ASSERT(XRE_IsParentProcess());
RemoveAll();
PropagateRemoveAll();
return NS_OK;
}
if (strcmp(aTopic, PURGE_DOMAIN_DATA) == 0) {
MOZ_ASSERT(XRE_IsParentProcess());
nsAutoString domain(aData);
RemoveAndPropagate(NS_ConvertUTF16toUTF8(domain));
return NS_OK;
}
if (strcmp(aTopic, CLEAR_ORIGIN_DATA) == 0) {
MOZ_ASSERT(XRE_IsParentProcess());
OriginAttributesPattern pattern;
MOZ_ALWAYS_TRUE(pattern.Init(nsAutoString(aData)));
RemoveAllRegistrations(&pattern);
return NS_OK;
}
if (strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0) {
MaybeStartShutdown();
return NS_OK;
}
MOZ_CRASH("Received message we aren't supposed to be registered for!");
return NS_OK;
}
NS_IMETHODIMP
ServiceWorkerManager::PropagateSoftUpdate(JS::Handle<JS::Value> aOriginAttributes,
const nsAString& aScope,
JSContext* aCx)
{
MOZ_ASSERT(NS_IsMainThread());
OriginAttributes attrs;
if (!aOriginAttributes.isObject() || !attrs.Init(aCx, aOriginAttributes)) {
return NS_ERROR_INVALID_ARG;
}
PropagateSoftUpdate(attrs, aScope);
return NS_OK;
}
void
ServiceWorkerManager::PropagateSoftUpdate(const OriginAttributes& aOriginAttributes,
const nsAString& aScope)
{
MOZ_ASSERT(NS_IsMainThread());
mActor->SendPropagateSoftUpdate(aOriginAttributes, nsString(aScope));
}
NS_IMETHODIMP
ServiceWorkerManager::PropagateUnregister(nsIPrincipal* aPrincipal,
nsIServiceWorkerUnregisterCallback* aCallback,
const nsAString& aScope)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aPrincipal);
PrincipalInfo principalInfo;
if (NS_WARN_IF(NS_FAILED(PrincipalToPrincipalInfo(aPrincipal,
&principalInfo)))) {
return NS_ERROR_FAILURE;
}
mActor->SendPropagateUnregister(principalInfo, nsString(aScope));
nsresult rv = Unregister(aPrincipal, aCallback, aScope);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
void
ServiceWorkerManager::NotifyListenersOnRegister(
nsIServiceWorkerRegistrationInfo* aInfo)
{
nsTArray<nsCOMPtr<nsIServiceWorkerManagerListener>> listeners(mListeners);
for (size_t index = 0; index < listeners.Length(); ++index) {
listeners[index]->OnRegister(aInfo);
}
}
void
ServiceWorkerManager::NotifyListenersOnUnregister(
nsIServiceWorkerRegistrationInfo* aInfo)
{
nsTArray<nsCOMPtr<nsIServiceWorkerManagerListener>> listeners(mListeners);
for (size_t index = 0; index < listeners.Length(); ++index) {
listeners[index]->OnUnregister(aInfo);
}
}
class UpdateTimerCallback final : public nsITimerCallback
, public nsINamed
{
nsCOMPtr<nsIPrincipal> mPrincipal;
const nsCString mScope;
~UpdateTimerCallback()
{
}
public:
UpdateTimerCallback(nsIPrincipal* aPrincipal, const nsACString& aScope)
: mPrincipal(aPrincipal)
, mScope(aScope)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mPrincipal);
MOZ_ASSERT(!mScope.IsEmpty());
}
NS_IMETHOD
Notify(nsITimer* aTimer) override
{
MOZ_ASSERT(NS_IsMainThread());
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (!swm) {
// shutting down, do nothing
return NS_OK;
}
swm->UpdateTimerFired(mPrincipal, mScope);
return NS_OK;
}
NS_IMETHOD
GetName(nsACString& aName) override
{
aName.AssignLiteral("UpdateTimerCallback");
return NS_OK;
}
NS_DECL_ISUPPORTS
};
NS_IMPL_ISUPPORTS(UpdateTimerCallback, nsITimerCallback, nsINamed)
bool
ServiceWorkerManager::MayHaveActiveServiceWorkerInstance(ContentParent* aContent,
nsIPrincipal* aPrincipal)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aPrincipal);
if (mShuttingDown) {
return false;
}
nsAutoCString scopeKey;
nsresult rv = PrincipalToScopeKey(aPrincipal, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return false;
}
RegistrationDataPerPrincipal* data;
if (!mRegistrationInfos.Get(scopeKey, &data)) {
return false;
}
return true;
}
void
ServiceWorkerManager::ScheduleUpdateTimer(nsIPrincipal* aPrincipal,
const nsACString& aScope)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aPrincipal);
MOZ_ASSERT(!aScope.IsEmpty());
if (mShuttingDown) {
return;
}
nsAutoCString scopeKey;
nsresult rv = PrincipalToScopeKey(aPrincipal, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
RegistrationDataPerPrincipal* data;
if (!mRegistrationInfos.Get(scopeKey, &data)) {
return;
}
nsCOMPtr<nsITimer>& timer = data->mUpdateTimers.GetOrInsert(aScope);
if (timer) {
// There is already a timer scheduled. In this case just use the original
// schedule time. We don't want to push it out to a later time since that
// could allow updates to be starved forever if events are continuously
// fired.
return;
}
nsCOMPtr<nsITimerCallback> callback = new UpdateTimerCallback(aPrincipal,
aScope);
const uint32_t UPDATE_DELAY_MS = 1000;
// Label with SystemGroup because UpdateTimerCallback only sends an IPC message
// (PServiceWorkerUpdaterConstructor) without touching any web contents.
rv = NS_NewTimerWithCallback(getter_AddRefs(timer),
callback, UPDATE_DELAY_MS,
nsITimer::TYPE_ONE_SHOT,
SystemGroup::EventTargetFor(TaskCategory::Other));
if (NS_WARN_IF(NS_FAILED(rv))) {
data->mUpdateTimers.Remove(aScope); // another lookup, but very rare
return;
}
}
void
ServiceWorkerManager::UpdateTimerFired(nsIPrincipal* aPrincipal,
const nsACString& aScope)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aPrincipal);
MOZ_ASSERT(!aScope.IsEmpty());
if (mShuttingDown) {
return;
}
// First cleanup the timer.
nsAutoCString scopeKey;
nsresult rv = PrincipalToScopeKey(aPrincipal, scopeKey);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
RegistrationDataPerPrincipal* data;
if (!mRegistrationInfos.Get(scopeKey, &data)) {
return;
}
if (auto entry = data->mUpdateTimers.Lookup(aScope)) {
entry.Data()->Cancel();
entry.Remove();
}
RefPtr<ServiceWorkerRegistrationInfo> registration;
data->mInfos.Get(aScope, getter_AddRefs(registration));
if (!registration) {
return;
}
if (!registration->CheckAndClearIfUpdateNeeded()) {
return;
}
OriginAttributes attrs = aPrincipal->OriginAttributesRef();
SoftUpdate(attrs, aScope);
}
void
ServiceWorkerManager::MaybeSendUnregister(nsIPrincipal* aPrincipal,
const nsACString& aScope)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aPrincipal);
MOZ_ASSERT(!aScope.IsEmpty());
if (!mActor) {
return;
}
PrincipalInfo principalInfo;
nsresult rv = PrincipalToPrincipalInfo(aPrincipal, &principalInfo);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
Unused << mActor->SendUnregister(principalInfo, NS_ConvertUTF8toUTF16(aScope));
}
} // namespace dom
} // namespace mozilla
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