dom/serviceworkers/ServiceWorkerPrivate.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "ServiceWorkerPrivate.h"
   8
   9 #include <utility>
  10
  11 #include "MainThreadUtils.h"
  12 #include "ServiceWorkerCloneData.h"
  13 #include "ServiceWorkerManager.h"
  14 #include "ServiceWorkerRegistrationInfo.h"
  15 #include "ServiceWorkerUtils.h"
  16 #include "js/ErrorReport.h"
  17 #include "mozIThirdPartyUtil.h"
  18 #include "mozilla/Assertions.h"
  19 #include "mozilla/CycleCollectedJSContext.h"  // for MicroTaskRunnable
  20 #include "mozilla/ErrorResult.h"
  21 #include "mozilla/JSObjectHolder.h"
  22 #include "mozilla/Maybe.h"
  23 #include "mozilla/OriginAttributes.h"
  24 #include "mozilla/Preferences.h"
  25 #include "mozilla/RemoteLazyInputStreamStorage.h"
  26 #include "mozilla/Result.h"
  27 #include "mozilla/ResultExtensions.h"
  28 #include "mozilla/ScopeExit.h"
  29 #include "mozilla/Services.h"
  30 #include "mozilla/StaticPrefs_dom.h"
  31 #include "mozilla/StoragePrincipalHelper.h"
  32 #include "mozilla/Telemetry.h"
  33 #include "mozilla/Unused.h"
  34 #include "mozilla/dom/ClientIPCTypes.h"
  35 #include "mozilla/dom/DOMTypes.h"
  36 #include "mozilla/dom/FetchEventOpChild.h"
  37 #include "mozilla/dom/InternalHeaders.h"
  38 #include "mozilla/dom/InternalRequest.h"
  39 #include "mozilla/dom/ReferrerInfo.h"
  40 #include "mozilla/dom/RemoteType.h"
  41 #include "mozilla/dom/RemoteWorkerControllerChild.h"
  42 #include "mozilla/dom/RemoteWorkerManager.h"  // RemoteWorkerManager::GetRemoteType
  43 #include "mozilla/dom/ServiceWorkerBinding.h"
  44 #include "mozilla/extensions/WebExtensionPolicy.h"  // WebExtensionPolicy
  45 #include "mozilla/ipc/BackgroundChild.h"
  46 #include "mozilla/ipc/IPCStreamUtils.h"
  47 #include "mozilla/ipc/PBackgroundChild.h"
  48 #include "mozilla/ipc/URIUtils.h"
  49 #include "mozilla/net/CookieJarSettings.h"
  50 #include "nsContentUtils.h"
  51 #include "nsDebug.h"
  52 #include "nsError.h"
  53 #include "nsICacheInfoChannel.h"
  54 #include "nsIChannel.h"
  55 #include "nsIHttpChannel.h"
  56 #include "nsIHttpChannelInternal.h"
  57 #include "nsIHttpHeaderVisitor.h"
  58 #include "nsINetworkInterceptController.h"
  59 #include "nsINamed.h"
  60 #include "nsIObserverService.h"
  61 #include "nsIRedirectHistoryEntry.h"
  62 #include "nsIScriptError.h"
  63 #include "nsIScriptSecurityManager.h"
  64 #include "nsISupportsImpl.h"
  65 #include "nsIURI.h"
  66 #include "nsIUploadChannel2.h"
  67 #include "nsNetUtil.h"
  68 #include "nsProxyRelease.h"
  69 #include "nsQueryObject.h"
  70 #include "nsRFPService.h"
  71 #include "nsStreamUtils.h"
  72 #include "nsStringStream.h"
  73 #include "nsThreadUtils.h"
  74
  75 #include "mozilla/dom/Client.h"
  76 #include "mozilla/dom/FetchUtil.h"
  77 #include "mozilla/dom/IndexedDatabaseManager.h"
  78 #include "mozilla/dom/NotificationEvent.h"
  79 #include "mozilla/dom/PromiseNativeHandler.h"
  80 #include "mozilla/dom/PushEventBinding.h"
  81 #include "mozilla/dom/RequestBinding.h"
  82 #include "mozilla/dom/RootedDictionary.h"
  83 #include "mozilla/dom/WorkerDebugger.h"
  84 #include "mozilla/dom/WorkerRef.h"
  85 #include "mozilla/dom/WorkerRunnable.h"
  86 #include "mozilla/dom/WorkerScope.h"
  87 #include "mozilla/dom/ipc/StructuredCloneData.h"
  88 #include "mozilla/ipc/BackgroundUtils.h"
  89 #include "mozilla/net/NeckoChannelParams.h"
  90 #include "mozilla/StaticPrefs_privacy.h"
  91 #include "nsIReferrerInfo.h"
  92
  93 extern mozilla::LazyLogModule sWorkerTelemetryLog;
  94
  95 #ifdef LOG
  96 #  undef LOG
  97 #endif
  98 #define LOG(_args) MOZ_LOG(sWorkerTelemetryLog, LogLevel::Debug, _args);
  99
 100 using namespace mozilla;
 101 using namespace mozilla::dom;
 102 using namespace mozilla::ipc;
 103
 104 namespace mozilla::dom {
 105
 106 uint32_t ServiceWorkerPrivate::sRunningServiceWorkers = 0;
 107 uint32_t ServiceWorkerPrivate::sRunningServiceWorkersFetch = 0;
 108 uint32_t ServiceWorkerPrivate::sRunningServiceWorkersMax = 0;
 109 uint32_t ServiceWorkerPrivate::sRunningServiceWorkersFetchMax = 0;
 110
 111 // Tracks the "dom.serviceWorkers.disable_open_click_delay" preference. Modified
 112 // on main thread, read on worker threads.
 113 // It is updated every time a "notificationclick" event is dispatched. While
 114 // this is done without synchronization, at the worst, the thread will just get
 115 // an older value within which a popup is allowed to be displayed, which will
 116 // still be a valid value since it was set prior to dispatching the runnable.
 117 Atomic<uint32_t> gDOMDisableOpenClickDelay(0);
 118
 119 /**
 120  * KeepAliveToken
 121  */
 122 KeepAliveToken::KeepAliveToken(ServiceWorkerPrivate* aPrivate)
 123     : mPrivate(aPrivate) {
 124   MOZ_ASSERT(NS_IsMainThread());
 125   MOZ_ASSERT(aPrivate);
 126   mPrivate->AddToken();
 127 }
 128
 129 KeepAliveToken::~KeepAliveToken() {
 130   MOZ_ASSERT(NS_IsMainThread());
 131   mPrivate->ReleaseToken();
 132 }
 133
 134 NS_IMPL_ISUPPORTS0(KeepAliveToken)
 135
 136 /**
 137  * RAIIActorPtrHolder
 138  */
 139 ServiceWorkerPrivate::RAIIActorPtrHolder::RAIIActorPtrHolder(
 140     already_AddRefed<RemoteWorkerControllerChild> aActor)
 141     : mActor(aActor) {
 142   AssertIsOnMainThread();
 143   MOZ_ASSERT(mActor);
 144   MOZ_ASSERT(mActor->Manager());
 145 }
 146
 147 ServiceWorkerPrivate::RAIIActorPtrHolder::~RAIIActorPtrHolder() {
 148   AssertIsOnMainThread();
 149
 150   mDestructorPromiseHolder.ResolveIfExists(true, __func__);
 151
 152   mActor->MaybeSendDelete();
 153 }
 154
 155 RemoteWorkerControllerChild*
 156 ServiceWorkerPrivate::RAIIActorPtrHolder::operator->() const {
 157   AssertIsOnMainThread();
 158
 159   return get();
 160 }
 161
 162 RemoteWorkerControllerChild* ServiceWorkerPrivate::RAIIActorPtrHolder::get()
 163     const {
 164   AssertIsOnMainThread();
 165
 166   return mActor.get();
 167 }
 168
 169 RefPtr<GenericPromise>
 170 ServiceWorkerPrivate::RAIIActorPtrHolder::OnDestructor() {
 171   AssertIsOnMainThread();
 172
 173   return mDestructorPromiseHolder.Ensure(__func__);
 174 }
 175
 176 /**
 177  *  PendingFunctionEvent
 178  */
 179 ServiceWorkerPrivate::PendingFunctionalEvent::PendingFunctionalEvent(
 180     ServiceWorkerPrivate* aOwner,
 181     RefPtr<ServiceWorkerRegistrationInfo>&& aRegistration)
 182     : mOwner(aOwner), mRegistration(std::move(aRegistration)) {
 183   AssertIsOnMainThread();
 184   MOZ_ASSERT(mOwner);
 185   MOZ_ASSERT(mOwner->mInfo);
 186   MOZ_ASSERT(mOwner->mInfo->State() == ServiceWorkerState::Activating);
 187   MOZ_ASSERT(mRegistration);
 188 }
 189
 190 ServiceWorkerPrivate::PendingFunctionalEvent::~PendingFunctionalEvent() {
 191   AssertIsOnMainThread();
 192 }
 193
 194 ServiceWorkerPrivate::PendingPushEvent::PendingPushEvent(
 195     ServiceWorkerPrivate* aOwner,
 196     RefPtr<ServiceWorkerRegistrationInfo>&& aRegistration,
 197     ServiceWorkerPushEventOpArgs&& aArgs)
 198     : PendingFunctionalEvent(aOwner, std::move(aRegistration)),
 199       mArgs(std::move(aArgs)) {
 200   AssertIsOnMainThread();
 201 }
 202
 203 nsresult ServiceWorkerPrivate::PendingPushEvent::Send() {
 204   AssertIsOnMainThread();
 205   MOZ_ASSERT(mOwner);
 206   MOZ_ASSERT(mOwner->mInfo);
 207
 208   return mOwner->SendPushEventInternal(std::move(mRegistration),
 209                                        std::move(mArgs));
 210 }
 211
 212 ServiceWorkerPrivate::PendingFetchEvent::PendingFetchEvent(
 213     ServiceWorkerPrivate* aOwner,
 214     RefPtr<ServiceWorkerRegistrationInfo>&& aRegistration,
 215     ParentToParentServiceWorkerFetchEventOpArgs&& aArgs,
 216     nsCOMPtr<nsIInterceptedChannel>&& aChannel,
 217     RefPtr<FetchServicePromises>&& aPreloadResponseReadyPromises)
 218     : PendingFunctionalEvent(aOwner, std::move(aRegistration)),
 219       mArgs(std::move(aArgs)),
 220       mChannel(std::move(aChannel)),
 221       mPreloadResponseReadyPromises(std::move(aPreloadResponseReadyPromises)) {
 222   AssertIsOnMainThread();
 223   MOZ_ASSERT(mChannel);
 224 }
 225
 226 nsresult ServiceWorkerPrivate::PendingFetchEvent::Send() {
 227   AssertIsOnMainThread();
 228   MOZ_ASSERT(mOwner);
 229   MOZ_ASSERT(mOwner->mInfo);
 230
 231   return mOwner->SendFetchEventInternal(
 232       std::move(mRegistration), std::move(mArgs), std::move(mChannel),
 233       std::move(mPreloadResponseReadyPromises));
 234 }
 235
 236 ServiceWorkerPrivate::PendingFetchEvent::~PendingFetchEvent() {
 237   AssertIsOnMainThread();
 238
 239   if (NS_WARN_IF(mChannel)) {
 240     mChannel->CancelInterception(NS_ERROR_INTERCEPTION_FAILED);
 241   }
 242 }
 243
 244 namespace {
 245
 246 class HeaderFiller final : public nsIHttpHeaderVisitor {
 247  public:
 248   NS_DECL_ISUPPORTS
 249
 250   explicit HeaderFiller(HeadersGuardEnum aGuard)
 251       : mInternalHeaders(new InternalHeaders(aGuard)) {
 252     MOZ_ASSERT(mInternalHeaders);
 253   }
 254
 255   NS_IMETHOD
 256   VisitHeader(const nsACString& aHeader, const nsACString& aValue) override {
 257     ErrorResult result;
 258     mInternalHeaders->Append(aHeader, aValue, result);
 259
 260     if (NS_WARN_IF(result.Failed())) {
 261       return result.StealNSResult();
 262     }
 263
 264     return NS_OK;
 265   }
 266
 267   RefPtr<InternalHeaders> Extract() {
 268     return RefPtr<InternalHeaders>(std::move(mInternalHeaders));
 269   }
 270
 271  private:
 272   ~HeaderFiller() = default;
 273
 274   RefPtr<InternalHeaders> mInternalHeaders;
 275 };
 276
 277 NS_IMPL_ISUPPORTS(HeaderFiller, nsIHttpHeaderVisitor)
 278
 279 Result<IPCInternalRequest, nsresult> GetIPCInternalRequest(
 280     nsIInterceptedChannel* aChannel) {
 281   AssertIsOnMainThread();
 282
 283   nsCOMPtr<nsIURI> uri;
 284   MOZ_TRY(aChannel->GetSecureUpgradedChannelURI(getter_AddRefs(uri)));
 285
 286   nsCOMPtr<nsIURI> uriNoFragment;
 287   MOZ_TRY(NS_GetURIWithoutRef(uri, getter_AddRefs(uriNoFragment)));
 288
 289   nsCOMPtr<nsIChannel> underlyingChannel;
 290   MOZ_TRY(aChannel->GetChannel(getter_AddRefs(underlyingChannel)));
 291
 292   nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(underlyingChannel);
 293   MOZ_ASSERT(httpChannel, "How come we don't have an HTTP channel?");
 294
 295   nsCOMPtr<nsIHttpChannelInternal> internalChannel =
 296       do_QueryInterface(httpChannel);
 297   NS_ENSURE_TRUE(internalChannel, Err(NS_ERROR_NOT_AVAILABLE));
 298
 299   nsCOMPtr<nsICacheInfoChannel> cacheInfoChannel =
 300       do_QueryInterface(underlyingChannel);
 301
 302   nsAutoCString spec;
 303   MOZ_TRY(uriNoFragment->GetSpec(spec));
 304
 305   nsAutoCString fragment;
 306   MOZ_TRY(uri->GetRef(fragment));
 307
 308   nsAutoCString method;
 309   MOZ_TRY(httpChannel->GetRequestMethod(method));
 310
 311   // This is safe due to static_asserts in ServiceWorkerManager.cpp
 312   uint32_t cacheModeInt;
 313   MOZ_ALWAYS_SUCCEEDS(internalChannel->GetFetchCacheMode(&cacheModeInt));
 314   RequestCache cacheMode = static_cast<RequestCache>(cacheModeInt);
 315
 316   RequestMode requestMode =
 317       InternalRequest::MapChannelToRequestMode(underlyingChannel);
 318
 319   // This is safe due to static_asserts in ServiceWorkerManager.cpp
 320   uint32_t redirectMode;
 321   MOZ_ALWAYS_SUCCEEDS(internalChannel->GetRedirectMode(&redirectMode));
 322   RequestRedirect requestRedirect = static_cast<RequestRedirect>(redirectMode);
 323
 324   RequestCredentials requestCredentials =
 325       InternalRequest::MapChannelToRequestCredentials(underlyingChannel);
 326
 327   nsAutoString referrer;
 328   ReferrerPolicy referrerPolicy = ReferrerPolicy::_empty;
 329   ReferrerPolicy environmentReferrerPolicy = ReferrerPolicy::_empty;
 330
 331   nsCOMPtr<nsIReferrerInfo> referrerInfo = httpChannel->GetReferrerInfo();
 332   if (referrerInfo) {
 333     referrerPolicy = referrerInfo->ReferrerPolicy();
 334     Unused << referrerInfo->GetComputedReferrerSpec(referrer);
 335   }
 336
 337   uint32_t loadFlags;
 338   MOZ_TRY(underlyingChannel->GetLoadFlags(&loadFlags));
 339
 340   nsCOMPtr<nsILoadInfo> loadInfo = underlyingChannel->LoadInfo();
 341   nsContentPolicyType contentPolicyType = loadInfo->InternalContentPolicyType();
 342
 343   nsAutoString integrity;
 344   MOZ_TRY(internalChannel->GetIntegrityMetadata(integrity));
 345
 346   RefPtr<HeaderFiller> headerFiller =
 347       MakeRefPtr<HeaderFiller>(HeadersGuardEnum::Request);
 348   MOZ_TRY(httpChannel->VisitNonDefaultRequestHeaders(headerFiller));
 349
 350   RefPtr<InternalHeaders> internalHeaders = headerFiller->Extract();
 351
 352   ErrorResult result;
 353   internalHeaders->SetGuard(HeadersGuardEnum::Immutable, result);
 354   if (NS_WARN_IF(result.Failed())) {
 355     return Err(result.StealNSResult());
 356   }
 357
 358   nsTArray<HeadersEntry> ipcHeaders;
 359   HeadersGuardEnum ipcHeadersGuard;
 360   internalHeaders->ToIPC(ipcHeaders, ipcHeadersGuard);
 361
 362   nsAutoCString alternativeDataType;
 363   if (cacheInfoChannel &&
 364       !cacheInfoChannel->PreferredAlternativeDataTypes().IsEmpty()) {
 365     // TODO: the internal request probably needs all the preferred types.
 366     alternativeDataType.Assign(
 367         cacheInfoChannel->PreferredAlternativeDataTypes()[0].type());
 368   }
 369
 370   Maybe<PrincipalInfo> principalInfo;
 371   Maybe<PrincipalInfo> interceptionPrincipalInfo;
 372   if (loadInfo->TriggeringPrincipal()) {
 373     principalInfo.emplace();
 374     interceptionPrincipalInfo.emplace();
 375     MOZ_ALWAYS_SUCCEEDS(PrincipalToPrincipalInfo(
 376         loadInfo->TriggeringPrincipal(), principalInfo.ptr()));
 377     MOZ_ALWAYS_SUCCEEDS(PrincipalToPrincipalInfo(
 378         loadInfo->TriggeringPrincipal(), interceptionPrincipalInfo.ptr()));
 379   }
 380
 381   nsTArray<RedirectHistoryEntryInfo> redirectChain;
 382   for (const nsCOMPtr<nsIRedirectHistoryEntry>& redirectEntry :
 383        loadInfo->RedirectChain()) {
 384     RedirectHistoryEntryInfo* entry = redirectChain.AppendElement();
 385     MOZ_ALWAYS_SUCCEEDS(RHEntryToRHEntryInfo(redirectEntry, entry));
 386   }
 387
 388   bool isThirdPartyChannel;
 389   // ThirdPartyUtil* thirdPartyUtil = ThirdPartyUtil::GetInstance();
 390   nsCOMPtr<mozIThirdPartyUtil> thirdPartyUtil =
 391       do_GetService(THIRDPARTYUTIL_CONTRACTID);
 392   if (thirdPartyUtil) {
 393     nsCOMPtr<nsIURI> uri;
 394     MOZ_TRY(underlyingChannel->GetURI(getter_AddRefs(uri)));
 395     MOZ_TRY(thirdPartyUtil->IsThirdPartyChannel(underlyingChannel, uri,
 396                                                 &isThirdPartyChannel));
 397   }
 398
 399   nsILoadInfo::CrossOriginEmbedderPolicy embedderPolicy =
 400       loadInfo->GetLoadingEmbedderPolicy();
 401
 402   // Note: all the arguments are copied rather than moved, which would be more
 403   // efficient, because there's no move-friendly constructor generated.
 404   return IPCInternalRequest(
 405       method, {spec}, ipcHeadersGuard, ipcHeaders, Nothing(), -1,
 406       alternativeDataType, contentPolicyType, referrer, referrerPolicy,
 407       environmentReferrerPolicy, requestMode, requestCredentials, cacheMode,
 408       requestRedirect, integrity, fragment, principalInfo,
 409       interceptionPrincipalInfo, contentPolicyType, redirectChain,
 410       isThirdPartyChannel, embedderPolicy);
 411 }
 412
 413 nsresult MaybeStoreStreamForBackgroundThread(nsIInterceptedChannel* aChannel,
 414                                              IPCInternalRequest& aIPCRequest) {
 415   nsCOMPtr<nsIChannel> channel;
 416   MOZ_ALWAYS_SUCCEEDS(aChannel->GetChannel(getter_AddRefs(channel)));
 417
 418   Maybe<BodyStreamVariant> body;
 419   nsCOMPtr<nsIUploadChannel2> uploadChannel = do_QueryInterface(channel);
 420
 421   if (uploadChannel) {
 422     nsCOMPtr<nsIInputStream> uploadStream;
 423     MOZ_TRY(uploadChannel->CloneUploadStream(&aIPCRequest.bodySize(),
 424                                              getter_AddRefs(uploadStream)));
 425
 426     if (uploadStream) {
 427       Maybe<BodyStreamVariant>& body = aIPCRequest.body();
 428       body.emplace(ParentToParentStream());
 429
 430       MOZ_TRY(
 431           nsID::GenerateUUIDInPlace(body->get_ParentToParentStream().uuid()));
 432
 433       auto storageOrErr = RemoteLazyInputStreamStorage::Get();
 434       if (NS_WARN_IF(storageOrErr.isErr())) {
 435         return storageOrErr.unwrapErr();
 436       }
 437
 438       auto storage = storageOrErr.unwrap();
 439       storage->AddStream(uploadStream, body->get_ParentToParentStream().uuid());
 440     }
 441   }
 442
 443   return NS_OK;
 444 }
 445
 446 }  // anonymous namespace
 447
 448 /**
 449  * ServiceWorkerPrivate
 450  */
 451 ServiceWorkerPrivate::ServiceWorkerPrivate(ServiceWorkerInfo* aInfo)
 452     : mInfo(aInfo), mDebuggerCount(0), mTokenCount(0) {
 453   MOZ_ASSERT(NS_IsMainThread());
 454   MOZ_ASSERT(aInfo);
 455   MOZ_ASSERT(!mControllerChild);
 456
 457   mIdleWorkerTimer = NS_NewTimer();
 458   MOZ_ASSERT(mIdleWorkerTimer);
 459
 460   // Assert in all debug builds as well as non-debug Nightly and Dev Edition.
 461 #ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
 462   MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(Initialize()));
 463 #else
 464   MOZ_ALWAYS_SUCCEEDS(Initialize());
 465 #endif
 466 }
 467
 468 ServiceWorkerPrivate::~ServiceWorkerPrivate() {
 469   MOZ_ASSERT(!mTokenCount);
 470   MOZ_ASSERT(!mInfo);
 471   MOZ_ASSERT(!mControllerChild);
 472   MOZ_ASSERT(mIdlePromiseHolder.IsEmpty());
 473
 474   mIdleWorkerTimer->Cancel();
 475 }
 476
 477 nsresult ServiceWorkerPrivate::Initialize() {
 478   AssertIsOnMainThread();
 479   MOZ_ASSERT(mInfo);
 480
 481   nsCOMPtr<nsIPrincipal> principal = mInfo->Principal();
 482
 483   nsCOMPtr<nsIURI> uri;
 484   auto* basePrin = BasePrincipal::Cast(principal);
 485   nsresult rv = basePrin->GetURI(getter_AddRefs(uri));
 486
 487   if (NS_WARN_IF(NS_FAILED(rv))) {
 488     return rv;
 489   }
 490
 491   if (NS_WARN_IF(!uri)) {
 492     return NS_ERROR_FAILURE;
 493   }
 494
 495   URIParams baseScriptURL;
 496   SerializeURI(uri, baseScriptURL);
 497
 498   nsString id;
 499   rv = mInfo->GetId(id);
 500
 501   if (NS_WARN_IF(NS_FAILED(rv))) {
 502     return rv;
 503   }
 504
 505   PrincipalInfo principalInfo;
 506   rv = PrincipalToPrincipalInfo(principal, &principalInfo);
 507   if (NS_WARN_IF(NS_FAILED(rv))) {
 508     return rv;
 509   }
 510
 511   RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
 512
 513   if (NS_WARN_IF(!swm)) {
 514     return NS_ERROR_DOM_ABORT_ERR;
 515   }
 516
 517   RefPtr<ServiceWorkerRegistrationInfo> regInfo =
 518       swm->GetRegistration(principal, mInfo->Scope());
 519
 520   if (NS_WARN_IF(!regInfo)) {
 521     return NS_ERROR_DOM_INVALID_STATE_ERR;
 522   }
 523
 524   nsCOMPtr<nsICookieJarSettings> cookieJarSettings =
 525       net::CookieJarSettings::Create(principal);
 526   MOZ_ASSERT(cookieJarSettings);
 527
 528   // We can populate the partitionKey and the fingerprinting protection
 529   // overrides using the originAttribute of the principal. If it has
 530   // partitionKey set, It's a foreign partitioned principal and it implies that
 531   // it's a third-party service worker. So, the cookieJarSettings can directly
 532   // use the partitionKey from it. For first-party case, we can populate the
 533   // partitionKey from the principal URI.
 534   Maybe<uint64_t> overriddenFingerprintingSettingsArg;
 535   Maybe<RFPTarget> overriddenFingerprintingSettings;
 536   if (!principal->OriginAttributesRef().mPartitionKey.IsEmpty()) {
 537     net::CookieJarSettings::Cast(cookieJarSettings)
 538         ->SetPartitionKey(principal->OriginAttributesRef().mPartitionKey);
 539
 540     // The service worker is for a third-party context, we get first-party
 541     // domain from the partitionKey and the third-party domain from the
 542     // principal of the service worker. Then, we can get the fingerprinting
 543     // protection overrides using them.
 544     nsAutoString scheme;
 545     nsAutoString pkBaseDomain;
 546     int32_t unused;
 547
 548     if (OriginAttributes::ParsePartitionKey(
 549             principal->OriginAttributesRef().mPartitionKey, scheme,
 550             pkBaseDomain, unused)) {
 551       nsCOMPtr<nsIURI> firstPartyURI;
 552       rv = NS_NewURI(getter_AddRefs(firstPartyURI),
 553                      scheme + u"://"_ns + pkBaseDomain);
 554       if (NS_SUCCEEDED(rv)) {
 555         overriddenFingerprintingSettings =
 556             nsRFPService::GetOverriddenFingerprintingSettingsForURI(
 557                 firstPartyURI, uri);
 558         if (overriddenFingerprintingSettings.isSome()) {
 559           overriddenFingerprintingSettingsArg.emplace(
 560               uint64_t(overriddenFingerprintingSettings.ref()));
 561         }
 562       }
 563     }
 564   } else if (!principal->OriginAttributesRef().mFirstPartyDomain.IsEmpty()) {
 565     // Using the first party domain to know the context of the service worker.
 566     // We will run into here if FirstPartyIsolation is enabled. In this case,
 567     // the PartitionKey won't get populated.
 568     nsCOMPtr<nsIURI> firstPartyURI;
 569     // Because the service worker is only available in secure contexts, so we
 570     // don't need to consider http and only use https as scheme to create
 571     // the first-party URI
 572     rv = NS_NewURI(
 573         getter_AddRefs(firstPartyURI),
 574         u"https://"_ns + principal->OriginAttributesRef().mFirstPartyDomain);
 575     if (NS_SUCCEEDED(rv)) {
 576       // If the first party domain is not a third-party domain, the service
 577       // worker is running in first-party context.
 578       bool isThirdParty;
 579       rv = principal->IsThirdPartyURI(firstPartyURI, &isThirdParty);
 580       NS_ENSURE_SUCCESS(rv, rv);
 581
 582       overriddenFingerprintingSettings =
 583           isThirdParty
 584               ? nsRFPService::GetOverriddenFingerprintingSettingsForURI(
 585                     firstPartyURI, uri)
 586               : nsRFPService::GetOverriddenFingerprintingSettingsForURI(
 587                     uri, nullptr);
 588
 589       if (overriddenFingerprintingSettings.isSome()) {
 590         overriddenFingerprintingSettingsArg.emplace(
 591             uint64_t(overriddenFingerprintingSettings.ref()));
 592       }
 593     }
 594   } else {
 595     net::CookieJarSettings::Cast(cookieJarSettings)->SetPartitionKey(uri);
 596
 597     // The service worker is for a first-party context, we can use the uri of
 598     // the service worker as the first-party domain to get the fingerprinting
 599     // protection overrides.
 600     overriddenFingerprintingSettings =
 601         nsRFPService::GetOverriddenFingerprintingSettingsForURI(uri, nullptr);
 602
 603     if (overriddenFingerprintingSettings.isSome()) {
 604       overriddenFingerprintingSettingsArg.emplace(
 605           uint64_t(overriddenFingerprintingSettings.ref()));
 606     }
 607   }
 608
 609   net::CookieJarSettingsArgs cjsData;
 610   net::CookieJarSettings::Cast(cookieJarSettings)->Serialize(cjsData);
 611
 612   nsCOMPtr<nsIPrincipal> partitionedPrincipal;
 613   rv = StoragePrincipalHelper::CreatePartitionedPrincipalForServiceWorker(
 614       principal, cookieJarSettings, getter_AddRefs(partitionedPrincipal));
 615   if (NS_WARN_IF(NS_FAILED(rv))) {
 616     return rv;
 617   }
 618
 619   PrincipalInfo partitionedPrincipalInfo;
 620   rv =
 621       PrincipalToPrincipalInfo(partitionedPrincipal, &partitionedPrincipalInfo);
 622   if (NS_WARN_IF(NS_FAILED(rv))) {
 623     return rv;
 624   }
 625
 626   StorageAccess storageAccess =
 627       StorageAllowedForServiceWorker(principal, cookieJarSettings);
 628
 629   ServiceWorkerData serviceWorkerData;
 630   serviceWorkerData.cacheName() = mInfo->CacheName();
 631   serviceWorkerData.loadFlags() = static_cast<uint32_t>(
 632       mInfo->GetImportsLoadFlags() | nsIChannel::LOAD_BYPASS_SERVICE_WORKER);
 633   serviceWorkerData.id() = std::move(id);
 634
 635   nsAutoCString domain;
 636   rv = uri->GetHost(domain);
 637   if (NS_WARN_IF(NS_FAILED(rv))) {
 638     return rv;
 639   }
 640
 641   auto remoteType = RemoteWorkerManager::GetRemoteType(
 642       principal, WorkerKind::WorkerKindService);
 643   if (NS_WARN_IF(remoteType.isErr())) {
 644     return remoteType.unwrapErr();
 645   }
 646
 647   // Determine if the service worker is registered under a third-party context
 648   // by checking if it's running under a partitioned principal.
 649   bool isThirdPartyContextToTopWindow =
 650       !principal->OriginAttributesRef().mPartitionKey.IsEmpty();
 651
 652   mRemoteWorkerData = RemoteWorkerData(
 653       NS_ConvertUTF8toUTF16(mInfo->ScriptSpec()), baseScriptURL, baseScriptURL,
 654       /* name */ VoidString(),
 655       /* workerType */ WorkerType::Classic,
 656       /* credentials */ RequestCredentials::Omit,
 657       /* loading principal */ principalInfo, principalInfo,
 658       partitionedPrincipalInfo,
 659       /* useRegularPrincipal */ true,
 660
 661       // ServiceWorkers run as first-party, no storage-access permission needed.
 662       /* usingStorageAccess */ false,
 663
 664       cjsData, domain,
 665       /* isSecureContext */ true,
 666       /* clientInfo*/ Nothing(),
 667
 668       // The RemoteWorkerData CTOR doesn't allow to set the referrerInfo via
 669       // already_AddRefed<>. Let's set it to null.
 670       /* referrerInfo */ nullptr,
 671
 672       storageAccess, isThirdPartyContextToTopWindow,
 673       nsContentUtils::ShouldResistFingerprinting_dangerous(
 674           principal,
 675           "Service Workers exist outside a Document or Channel; as a property "
 676           "of the domain (and origin attributes). We don't have a "
 677           "CookieJarSettings to perform the nested check, but we can rely on"
 678           "the FPI/dFPI partition key check. The WorkerPrivate's "
 679           "ShouldResistFingerprinting function for the ServiceWorker depends "
 680           "on this boolean and will also consider an explicit RFPTarget.",
 681           RFPTarget::IsAlwaysEnabledForPrecompute),
 682       overriddenFingerprintingSettingsArg,
 683       // Origin trials are associated to a window, so it doesn't make sense on
 684       // service workers.
 685       OriginTrials(), std::move(serviceWorkerData), regInfo->AgentClusterId(),
 686       remoteType.unwrap());
 687
 688   mRemoteWorkerData.referrerInfo() = MakeAndAddRef<ReferrerInfo>();
 689
 690   // This fills in the rest of mRemoteWorkerData.serviceWorkerData().
 691   RefreshRemoteWorkerData(regInfo);
 692
 693   return NS_OK;
 694 }
 695
 696 nsresult ServiceWorkerPrivate::CheckScriptEvaluation(
 697     RefPtr<LifeCycleEventCallback> aCallback) {
 698   MOZ_ASSERT(NS_IsMainThread());
 699   MOZ_ASSERT(aCallback);
 700
 701   RefPtr<ServiceWorkerPrivate> self = this;
 702
 703   /**
 704    * We need to capture the actor associated with the current Service Worker so
 705    * we can terminate it if script evaluation failed.
 706    */
 707   nsresult rv = SpawnWorkerIfNeeded();
 708
 709   if (NS_WARN_IF(NS_FAILED(rv))) {
 710     aCallback->SetResult(false);
 711     aCallback->Run();
 712
 713     return rv;
 714   }
 715
 716   MOZ_ASSERT(mControllerChild);
 717
 718   RefPtr<RAIIActorPtrHolder> holder = mControllerChild;
 719
 720   return ExecServiceWorkerOp(
 721       ServiceWorkerCheckScriptEvaluationOpArgs(),
 722       [self = std::move(self), holder = std::move(holder),
 723        callback = aCallback](ServiceWorkerOpResult&& aResult) mutable {
 724         if (aResult.type() == ServiceWorkerOpResult::
 725                                   TServiceWorkerCheckScriptEvaluationOpResult) {
 726           auto& result =
 727               aResult.get_ServiceWorkerCheckScriptEvaluationOpResult();
 728
 729           if (result.workerScriptExecutedSuccessfully()) {
 730             self->SetHandlesFetch(result.fetchHandlerWasAdded());
 731             if (self->mHandlesFetch == Unknown) {
 732               self->mHandlesFetch =
 733                   result.fetchHandlerWasAdded() ? Enabled : Disabled;
 734               // Update telemetry for # of running SW - the already-running SW
 735               // handles fetch
 736               if (self->mHandlesFetch == Enabled) {
 737                 self->UpdateRunning(0, 1);
 738               }
 739             }
 740
 741             callback->SetResult(result.workerScriptExecutedSuccessfully());
 742             callback->Run();
 743             return;
 744           }
 745         }
 746
 747         /**
 748          * If script evaluation failed, first terminate the Service Worker
 749          * before invoking the callback.
 750          */
 751         MOZ_ASSERT_IF(aResult.type() == ServiceWorkerOpResult::Tnsresult,
 752                       NS_FAILED(aResult.get_nsresult()));
 753
 754         // If a termination operation was already issued using `holder`...
 755         if (self->mControllerChild != holder) {
 756           holder->OnDestructor()->Then(
 757               GetCurrentSerialEventTarget(), __func__,
 758               [callback = std::move(callback)](
 759                   const GenericPromise::ResolveOrRejectValue&) {
 760                 callback->SetResult(false);
 761                 callback->Run();
 762               });
 763
 764           return;
 765         }
 766
 767         RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
 768         MOZ_ASSERT(swm);
 769
 770         auto shutdownStateId = swm->MaybeInitServiceWorkerShutdownProgress();
 771
 772         RefPtr<GenericNonExclusivePromise> promise =
 773             self->ShutdownInternal(shutdownStateId);
 774
 775         swm->BlockShutdownOn(promise, shutdownStateId);
 776
 777         promise->Then(
 778             GetCurrentSerialEventTarget(), __func__,
 779             [callback = std::move(callback)](
 780                 const GenericNonExclusivePromise::ResolveOrRejectValue&) {
 781               callback->SetResult(false);
 782               callback->Run();
 783             });
 784       },
 785       [callback = aCallback] {
 786         callback->SetResult(false);
 787         callback->Run();
 788       });
 789 }
 790
 791 nsresult ServiceWorkerPrivate::SendMessageEvent(
 792     RefPtr<ServiceWorkerCloneData>&& aData,
 793     const ClientInfoAndState& aClientInfoAndState) {
 794   AssertIsOnMainThread();
 795   MOZ_ASSERT(aData);
 796
 797   auto scopeExit = MakeScopeExit([&] { Shutdown(); });
 798
 799   PBackgroundChild* bgChild = BackgroundChild::GetForCurrentThread();
 800
 801   if (NS_WARN_IF(!bgChild)) {
 802     return NS_ERROR_DOM_INVALID_STATE_ERR;
 803   }
 804
 805   ServiceWorkerMessageEventOpArgs args;
 806   args.clientInfoAndState() = aClientInfoAndState;
 807   if (!aData->BuildClonedMessageData(args.clonedData())) {
 808     return NS_ERROR_DOM_DATA_CLONE_ERR;
 809   }
 810
 811   scopeExit.release();
 812
 813   return ExecServiceWorkerOp(
 814       std::move(args), [](ServiceWorkerOpResult&& aResult) {
 815         MOZ_ASSERT(aResult.type() == ServiceWorkerOpResult::Tnsresult);
 816       });
 817 }
 818
 819 nsresult ServiceWorkerPrivate::SendLifeCycleEvent(
 820     const nsAString& aEventType, RefPtr<LifeCycleEventCallback> aCallback) {
 821   AssertIsOnMainThread();
 822   MOZ_ASSERT(aCallback);
 823
 824   return ExecServiceWorkerOp(
 825       ServiceWorkerLifeCycleEventOpArgs(nsString(aEventType)),
 826       [callback = aCallback](ServiceWorkerOpResult&& aResult) {
 827         MOZ_ASSERT(aResult.type() == ServiceWorkerOpResult::Tnsresult);
 828
 829         callback->SetResult(NS_SUCCEEDED(aResult.get_nsresult()));
 830         callback->Run();
 831       },
 832       [callback = aCallback] {
 833         callback->SetResult(false);
 834         callback->Run();
 835       });
 836 }
 837
 838 nsresult ServiceWorkerPrivate::SendPushEvent(
 839     const nsAString& aMessageId, const Maybe<nsTArray<uint8_t>>& aData,
 840     RefPtr<ServiceWorkerRegistrationInfo> aRegistration) {
 841   AssertIsOnMainThread();
 842   MOZ_ASSERT(mInfo);
 843   MOZ_ASSERT(aRegistration);
 844
 845   ServiceWorkerPushEventOpArgs args;
 846   args.messageId() = nsString(aMessageId);
 847
 848   if (aData) {
 849     args.data() = aData.ref();
 850   } else {
 851     args.data() = void_t();
 852   }
 853
 854   if (mInfo->State() == ServiceWorkerState::Activating) {
 855     UniquePtr<PendingFunctionalEvent> pendingEvent =
 856         MakeUnique<PendingPushEvent>(this, std::move(aRegistration),
 857                                      std::move(args));
 858
 859     mPendingFunctionalEvents.AppendElement(std::move(pendingEvent));
 860
 861     return NS_OK;
 862   }
 863
 864   MOZ_ASSERT(mInfo->State() == ServiceWorkerState::Activated);
 865
 866   return SendPushEventInternal(std::move(aRegistration), std::move(args));
 867 }
 868
 869 nsresult ServiceWorkerPrivate::SendPushEventInternal(
 870     RefPtr<ServiceWorkerRegistrationInfo>&& aRegistration,
 871     ServiceWorkerPushEventOpArgs&& aArgs) {
 872   AssertIsOnMainThread();
 873   MOZ_ASSERT(aRegistration);
 874
 875   return ExecServiceWorkerOp(
 876       std::move(aArgs),
 877       [registration = aRegistration](ServiceWorkerOpResult&& aResult) {
 878         MOZ_ASSERT(aResult.type() == ServiceWorkerOpResult::Tnsresult);
 879
 880         registration->MaybeScheduleTimeCheckAndUpdate();
 881       },
 882       [registration = aRegistration]() {
 883         registration->MaybeScheduleTimeCheckAndUpdate();
 884       });
 885 }
 886
 887 nsresult ServiceWorkerPrivate::SendPushSubscriptionChangeEvent() {
 888   AssertIsOnMainThread();
 889
 890   return ExecServiceWorkerOp(
 891       ServiceWorkerPushSubscriptionChangeEventOpArgs(),
 892       [](ServiceWorkerOpResult&& aResult) {
 893         MOZ_ASSERT(aResult.type() == ServiceWorkerOpResult::Tnsresult);
 894       });
 895 }
 896
 897 nsresult ServiceWorkerPrivate::SendNotificationEvent(
 898     const nsAString& aEventName, const nsAString& aID, const nsAString& aTitle,
 899     const nsAString& aDir, const nsAString& aLang, const nsAString& aBody,
 900     const nsAString& aTag, const nsAString& aIcon, const nsAString& aData,
 901     const nsAString& aBehavior, const nsAString& aScope) {
 902   MOZ_ASSERT(NS_IsMainThread());
 903
 904   if (aEventName.EqualsLiteral(NOTIFICATION_CLICK_EVENT_NAME)) {
 905     gDOMDisableOpenClickDelay =
 906         Preferences::GetInt("dom.serviceWorkers.disable_open_click_delay");
 907   } else if (!aEventName.EqualsLiteral(NOTIFICATION_CLOSE_EVENT_NAME)) {
 908     MOZ_ASSERT_UNREACHABLE("Invalid notification event name");
 909     return NS_ERROR_FAILURE;
 910   }
 911
 912   ServiceWorkerNotificationEventOpArgs args;
 913   args.eventName() = nsString(aEventName);
 914   args.id() = nsString(aID);
 915   args.title() = nsString(aTitle);
 916   args.dir() = nsString(aDir);
 917   args.lang() = nsString(aLang);
 918   args.body() = nsString(aBody);
 919   args.tag() = nsString(aTag);
 920   args.icon() = nsString(aIcon);
 921   args.data() = nsString(aData);
 922   args.behavior() = nsString(aBehavior);
 923   args.scope() = nsString(aScope);
 924   args.disableOpenClickDelay() = gDOMDisableOpenClickDelay;
 925
 926   return ExecServiceWorkerOp(
 927       std::move(args), [](ServiceWorkerOpResult&& aResult) {
 928         MOZ_ASSERT(aResult.type() == ServiceWorkerOpResult::Tnsresult);
 929       });
 930 }
 931
 932 nsresult ServiceWorkerPrivate::SendFetchEvent(
 933     nsCOMPtr<nsIInterceptedChannel> aChannel, nsILoadGroup* aLoadGroup,
 934     const nsAString& aClientId, const nsAString& aResultingClientId) {
 935   MOZ_ASSERT(NS_IsMainThread());
 936   MOZ_ASSERT(aChannel);
 937
 938   RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
 939   if (NS_WARN_IF(!mInfo || !swm)) {
 940     return NS_ERROR_FAILURE;
 941   }
 942
 943   nsCOMPtr<nsIChannel> channel;
 944   nsresult rv = aChannel->GetChannel(getter_AddRefs(channel));
 945   NS_ENSURE_SUCCESS(rv, rv);
 946   bool isNonSubresourceRequest =
 947       nsContentUtils::IsNonSubresourceRequest(channel);
 948
 949   RefPtr<ServiceWorkerRegistrationInfo> registration;
 950   if (isNonSubresourceRequest) {
 951     registration = swm->GetRegistration(mInfo->Principal(), mInfo->Scope());
 952   } else {
 953     nsCOMPtr<nsILoadInfo> loadInfo = channel->LoadInfo();
 954
 955     // We'll check for a null registration below rather than an error code here.
 956     Unused << swm->GetClientRegistration(loadInfo->GetClientInfo().ref(),
 957                                          getter_AddRefs(registration));
 958   }
 959
 960   // Its possible the registration is removed between starting the interception
 961   // and actually dispatching the fetch event.  In these cases we simply
 962   // want to restart the original network request.  Since this is a normal
 963   // condition we handle the reset here instead of returning an error which
 964   // would in turn trigger a console report.
 965   if (!registration) {
 966     nsresult rv = aChannel->ResetInterception(false);
 967     if (NS_FAILED(rv)) {
 968       NS_WARNING("Failed to resume intercepted network request");
 969       aChannel->CancelInterception(rv);
 970     }
 971     return NS_OK;
 972   }
 973
 974   // Handle Fetch algorithm - step 16. If the service worker didn't register
 975   // any fetch event handlers, then abort the interception and maybe trigger
 976   // the soft update algorithm.
 977   if (!mInfo->HandlesFetch()) {
 978     nsresult rv = aChannel->ResetInterception(false);
 979     if (NS_FAILED(rv)) {
 980       NS_WARNING("Failed to resume intercepted network request");
 981       aChannel->CancelInterception(rv);
 982     }
 983
 984     // Trigger soft updates if necessary.
 985     registration->MaybeScheduleTimeCheckAndUpdate();
 986
 987     return NS_OK;
 988   }
 989
 990   auto scopeExit = MakeScopeExit([&] {
 991     aChannel->CancelInterception(NS_ERROR_INTERCEPTION_FAILED);
 992     Shutdown();
 993   });
 994
 995   IPCInternalRequest request;
 996   MOZ_TRY_VAR(request, GetIPCInternalRequest(aChannel));
 997
 998   scopeExit.release();
 999
1000   bool preloadNavigation = isNonSubresourceRequest &&
1001                            request.method().LowerCaseEqualsASCII("get") &&
1002                            registration->GetNavigationPreloadState().enabled();
1003
1004   RefPtr<FetchServicePromises> preloadResponsePromises;
1005   if (preloadNavigation) {
1006     preloadResponsePromises = SetupNavigationPreload(aChannel, registration);
1007   }
1008
1009   ParentToParentServiceWorkerFetchEventOpArgs args(
1010       ServiceWorkerFetchEventOpArgsCommon(
1011           mInfo->ScriptSpec(), request, nsString(aClientId),
1012           nsString(aResultingClientId), isNonSubresourceRequest,
1013           preloadNavigation, mInfo->TestingInjectCancellation()),
1014       Nothing(), Nothing(), Nothing());
1015
1016   if (mInfo->State() == ServiceWorkerState::Activating) {
1017     UniquePtr<PendingFunctionalEvent> pendingEvent =
1018         MakeUnique<PendingFetchEvent>(this, std::move(registration),
1019                                       std::move(args), std::move(aChannel),
1020                                       std::move(preloadResponsePromises));
1021
1022     mPendingFunctionalEvents.AppendElement(std::move(pendingEvent));
1023
1024     return NS_OK;
1025   }
1026
1027   MOZ_ASSERT(mInfo->State() == ServiceWorkerState::Activated);
1028
1029   return SendFetchEventInternal(std::move(registration), std::move(args),
1030                                 std::move(aChannel),
1031                                 std::move(preloadResponsePromises));
1032 }
1033
1034 nsresult ServiceWorkerPrivate::SendFetchEventInternal(
1035     RefPtr<ServiceWorkerRegistrationInfo>&& aRegistration,
1036     ParentToParentServiceWorkerFetchEventOpArgs&& aArgs,
1037     nsCOMPtr<nsIInterceptedChannel>&& aChannel,
1038     RefPtr<FetchServicePromises>&& aPreloadResponseReadyPromises) {
1039   AssertIsOnMainThread();
1040
1041   auto scopeExit = MakeScopeExit([&] { Shutdown(); });
1042
1043   if (NS_WARN_IF(!mInfo)) {
1044     return NS_ERROR_DOM_INVALID_STATE_ERR;
1045   }
1046
1047   MOZ_TRY(SpawnWorkerIfNeeded());
1048   MOZ_TRY(MaybeStoreStreamForBackgroundThread(
1049       aChannel, aArgs.common().internalRequest()));
1050
1051   scopeExit.release();
1052
1053   MOZ_ASSERT(mControllerChild);
1054
1055   RefPtr<RAIIActorPtrHolder> holder = mControllerChild;
1056
1057   FetchEventOpChild::SendFetchEvent(
1058       mControllerChild->get(), std::move(aArgs), std::move(aChannel),
1059       std::move(aRegistration), std::move(aPreloadResponseReadyPromises),
1060       CreateEventKeepAliveToken())
1061       ->Then(GetCurrentSerialEventTarget(), __func__,
1062              [holder = std::move(holder)](
1063                  const GenericPromise::ResolveOrRejectValue& aResult) {
1064                Unused << NS_WARN_IF(aResult.IsReject());
1065              });
1066
1067   return NS_OK;
1068 }
1069
1070 Result<RefPtr<ServiceWorkerPrivate::PromiseExtensionWorkerHasListener>,
1071        nsresult>
1072 ServiceWorkerPrivate::WakeForExtensionAPIEvent(
1073     const nsAString& aExtensionAPINamespace,
1074     const nsAString& aExtensionAPIEventName) {
1075   AssertIsOnMainThread();
1076
1077   ServiceWorkerExtensionAPIEventOpArgs args;
1078   args.apiNamespace() = nsString(aExtensionAPINamespace);
1079   args.apiEventName() = nsString(aExtensionAPIEventName);
1080
1081   auto promise =
1082       MakeRefPtr<PromiseExtensionWorkerHasListener::Private>(__func__);
1083
1084   nsresult rv = ExecServiceWorkerOp(
1085       std::move(args),
1086       [promise](ServiceWorkerOpResult&& aResult) {
1087         MOZ_ASSERT(
1088             aResult.type() ==
1089             ServiceWorkerOpResult::TServiceWorkerExtensionAPIEventOpResult);
1090         auto& result = aResult.get_ServiceWorkerExtensionAPIEventOpResult();
1091         promise->Resolve(result.extensionAPIEventListenerWasAdded(), __func__);
1092       },
1093       [promise]() { promise->Reject(NS_ERROR_FAILURE, __func__); });
1094
1095   if (NS_FAILED(rv)) {
1096     promise->Reject(rv, __func__);
1097   }
1098
1099   RefPtr<PromiseExtensionWorkerHasListener> outPromise(promise);
1100   return outPromise;
1101 }
1102
1103 nsresult ServiceWorkerPrivate::SpawnWorkerIfNeeded() {
1104   AssertIsOnMainThread();
1105
1106   if (mControllerChild) {
1107     RenewKeepAliveToken();
1108     return NS_OK;
1109   }
1110
1111   if (!mInfo) {
1112     return NS_ERROR_DOM_INVALID_STATE_ERR;
1113   }
1114
1115   mServiceWorkerLaunchTimeStart = TimeStamp::Now();
1116
1117   PBackgroundChild* bgChild = BackgroundChild::GetForCurrentThread();
1118
1119   if (NS_WARN_IF(!bgChild)) {
1120     return NS_ERROR_DOM_INVALID_STATE_ERR;
1121   }
1122
1123   // If the worker principal is an extension principal, then we should not spawn
1124   // a worker if there is no WebExtensionPolicy associated to that principal
1125   // or if the WebExtensionPolicy is not active.
1126   auto* principal = mInfo->Principal();
1127   if (principal->SchemeIs("moz-extension")) {
1128     auto* addonPolicy = BasePrincipal::Cast(principal)->AddonPolicy();
1129     if (!addonPolicy || !addonPolicy->Active()) {
1130       NS_WARNING(
1131           "Trying to wake up a service worker for a disabled webextension.");
1132       return NS_ERROR_DOM_INVALID_STATE_ERR;
1133     }
1134   }
1135
1136   RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
1137
1138   if (NS_WARN_IF(!swm)) {
1139     return NS_ERROR_DOM_ABORT_ERR;
1140   }
1141
1142   RefPtr<ServiceWorkerRegistrationInfo> regInfo =
1143       swm->GetRegistration(principal, mInfo->Scope());
1144
1145   if (NS_WARN_IF(!regInfo)) {
1146     return NS_ERROR_DOM_INVALID_STATE_ERR;
1147   }
1148
1149   RefreshRemoteWorkerData(regInfo);
1150
1151   RefPtr<RemoteWorkerControllerChild> controllerChild =
1152       new RemoteWorkerControllerChild(this);
1153
1154   if (NS_WARN_IF(!bgChild->SendPRemoteWorkerControllerConstructor(
1155           controllerChild, mRemoteWorkerData))) {
1156     return NS_ERROR_DOM_INVALID_STATE_ERR;
1157   }
1158
1159   mControllerChild = new RAIIActorPtrHolder(controllerChild.forget());
1160
1161   // Update Running count here because we may Terminate before we get
1162   // CreationSucceeded().  We'll update if it handles Fetch if that changes
1163   // (
1164   UpdateRunning(1, mHandlesFetch == Enabled ? 1 : 0);
1165
1166   return NS_OK;
1167 }
1168
1169 void ServiceWorkerPrivate::TerminateWorker() {
1170   MOZ_ASSERT(NS_IsMainThread());
1171   mIdleWorkerTimer->Cancel();
1172   mIdleKeepAliveToken = nullptr;
1173   Shutdown();
1174 }
1175
1176 void ServiceWorkerPrivate::NoteDeadServiceWorkerInfo() {
1177   MOZ_ASSERT(NS_IsMainThread());
1178
1179   TerminateWorker();
1180   mInfo = nullptr;
1181 }
1182
1183 void ServiceWorkerPrivate::UpdateState(ServiceWorkerState aState) {
1184   AssertIsOnMainThread();
1185
1186   if (!mControllerChild) {
1187     return;
1188   }
1189
1190   nsresult rv = ExecServiceWorkerOp(
1191       ServiceWorkerUpdateStateOpArgs(aState),
1192       [](ServiceWorkerOpResult&& aResult) {
1193         MOZ_ASSERT(aResult.type() == ServiceWorkerOpResult::Tnsresult);
1194       });
1195
1196   if (NS_WARN_IF(NS_FAILED(rv))) {
1197     Shutdown();
1198     return;
1199   }
1200
1201   if (aState != ServiceWorkerState::Activated) {
1202     return;
1203   }
1204
1205   for (auto& event : mPendingFunctionalEvents) {
1206     Unused << NS_WARN_IF(NS_FAILED(event->Send()));
1207   }
1208
1209   mPendingFunctionalEvents.Clear();
1210 }
1211
1212 nsresult ServiceWorkerPrivate::GetDebugger(nsIWorkerDebugger** aResult) {
1213   MOZ_ASSERT(NS_IsMainThread());
1214   MOZ_ASSERT(aResult);
1215
1216   return NS_ERROR_NOT_IMPLEMENTED;
1217 }
1218
1219 nsresult ServiceWorkerPrivate::AttachDebugger() {
1220   MOZ_ASSERT(NS_IsMainThread());
1221
1222   // When the first debugger attaches to a worker, we spawn a worker if needed,
1223   // and cancel the idle timeout. The idle timeout should not be reset until
1224   // the last debugger detached from the worker.
1225   if (!mDebuggerCount) {
1226     nsresult rv = SpawnWorkerIfNeeded();
1227     NS_ENSURE_SUCCESS(rv, rv);
1228
1229     /**
1230      * Renewing the idle KeepAliveToken for spawning workers happens
1231      * asynchronously, rather than synchronously.
1232      * The asynchronous renewal is because the actual spawning of workers occurs
1233      * in a content process, so we will only renew once notified that the worker
1234      * has been successfully created
1235      *
1236      * This means that the DevTools way of starting up a worker by calling
1237      * `AttachDebugger` immediately followed by `DetachDebugger` will spawn and
1238      * immediately terminate a worker (because `mTokenCount` is possibly 0
1239      * due to the idle KeepAliveToken being created asynchronously). So, just
1240      * renew the KeepAliveToken right now.
1241      */
1242     RenewKeepAliveToken();
1243     mIdleWorkerTimer->Cancel();
1244   }
1245
1246   ++mDebuggerCount;
1247
1248   return NS_OK;
1249 }
1250
1251 nsresult ServiceWorkerPrivate::DetachDebugger() {
1252   MOZ_ASSERT(NS_IsMainThread());
1253
1254   if (!mDebuggerCount) {
1255     return NS_ERROR_UNEXPECTED;
1256   }
1257
1258   --mDebuggerCount;
1259
1260   // When the last debugger detaches from a worker, we either reset the idle
1261   // timeout, or terminate the worker if there are no more active tokens.
1262   if (!mDebuggerCount) {
1263     if (mTokenCount) {
1264       ResetIdleTimeout();
1265     } else {
1266       TerminateWorker();
1267     }
1268   }
1269
1270   return NS_OK;
1271 }
1272
1273 bool ServiceWorkerPrivate::IsIdle() const {
1274   MOZ_ASSERT(NS_IsMainThread());
1275   return mTokenCount == 0 || (mTokenCount == 1 && mIdleKeepAliveToken);
1276 }
1277
1278 RefPtr<GenericPromise> ServiceWorkerPrivate::GetIdlePromise() {
1279 #ifdef DEBUG
1280   MOZ_ASSERT(NS_IsMainThread());
1281   MOZ_ASSERT(!IsIdle());
1282   MOZ_ASSERT(!mIdlePromiseObtained, "Idle promise may only be obtained once!");
1283   mIdlePromiseObtained = true;
1284 #endif
1285
1286   return mIdlePromiseHolder.Ensure(__func__);
1287 }
1288
1289 namespace {
1290
1291 class ServiceWorkerPrivateTimerCallback final : public nsITimerCallback,
1292                                                 public nsINamed {
1293  public:
1294   using Method = void (ServiceWorkerPrivate::*)(nsITimer*);
1295
1296   ServiceWorkerPrivateTimerCallback(ServiceWorkerPrivate* aServiceWorkerPrivate,
1297                                     Method aMethod)
1298       : mServiceWorkerPrivate(aServiceWorkerPrivate), mMethod(aMethod) {}
1299
1300   NS_IMETHOD
1301   Notify(nsITimer* aTimer) override {
1302     (mServiceWorkerPrivate->*mMethod)(aTimer);
1303     mServiceWorkerPrivate = nullptr;
1304     return NS_OK;
1305   }
1306
1307   NS_IMETHOD
1308   GetName(nsACString& aName) override {
1309     aName.AssignLiteral("ServiceWorkerPrivateTimerCallback");
1310     return NS_OK;
1311   }
1312
1313  private:
1314   ~ServiceWorkerPrivateTimerCallback() = default;
1315
1316   RefPtr<ServiceWorkerPrivate> mServiceWorkerPrivate;
1317   Method mMethod;
1318
1319   NS_DECL_THREADSAFE_ISUPPORTS
1320 };
1321
1322 NS_IMPL_ISUPPORTS(ServiceWorkerPrivateTimerCallback, nsITimerCallback,
1323                   nsINamed);
1324
1325 }  // anonymous namespace
1326
1327 void ServiceWorkerPrivate::NoteIdleWorkerCallback(nsITimer* aTimer) {
1328   MOZ_ASSERT(NS_IsMainThread());
1329
1330   MOZ_ASSERT(aTimer == mIdleWorkerTimer, "Invalid timer!");
1331
1332   // Release ServiceWorkerPrivate's token, since the grace period has ended.
1333   mIdleKeepAliveToken = nullptr;
1334
1335   if (mControllerChild) {
1336     // If we still have a living worker at this point it means that either there
1337     // are pending waitUntil promises or the worker is doing some long-running
1338     // computation. Wait a bit more until we forcibly terminate the worker.
1339     uint32_t timeout =
1340         Preferences::GetInt("dom.serviceWorkers.idle_extended_timeout");
1341     nsCOMPtr<nsITimerCallback> cb = new ServiceWorkerPrivateTimerCallback(
1342         this, &ServiceWorkerPrivate::TerminateWorkerCallback);
1343     DebugOnly<nsresult> rv = mIdleWorkerTimer->InitWithCallback(
1344         cb, timeout, nsITimer::TYPE_ONE_SHOT);
1345     MOZ_ASSERT(NS_SUCCEEDED(rv));
1346   }
1347 }
1348
1349 void ServiceWorkerPrivate::TerminateWorkerCallback(nsITimer* aTimer) {
1350   MOZ_ASSERT(NS_IsMainThread());
1351
1352   MOZ_ASSERT(aTimer == this->mIdleWorkerTimer, "Invalid timer!");
1353
1354   // mInfo must be non-null at this point because NoteDeadServiceWorkerInfo
1355   // which zeroes it calls TerminateWorker which cancels our timer which will
1356   // ensure we don't get invoked even if the nsTimerEvent is in the event queue.
1357   ServiceWorkerManager::LocalizeAndReportToAllClients(
1358       mInfo->Scope(), "ServiceWorkerGraceTimeoutTermination",
1359       nsTArray<nsString>{NS_ConvertUTF8toUTF16(mInfo->Scope())});
1360
1361   TerminateWorker();
1362 }
1363
1364 void ServiceWorkerPrivate::RenewKeepAliveToken() {
1365   // We should have an active worker if we're renewing the keep alive token.
1366   MOZ_ASSERT(mControllerChild);
1367
1368   // If there is at least one debugger attached to the worker, the idle worker
1369   // timeout was canceled when the first debugger attached to the worker. It
1370   // should not be reset until the last debugger detaches from the worker.
1371   if (!mDebuggerCount) {
1372     ResetIdleTimeout();
1373   }
1374
1375   if (!mIdleKeepAliveToken) {
1376     mIdleKeepAliveToken = new KeepAliveToken(this);
1377   }
1378 }
1379
1380 void ServiceWorkerPrivate::ResetIdleTimeout() {
1381   uint32_t timeout = Preferences::GetInt("dom.serviceWorkers.idle_timeout");
1382   nsCOMPtr<nsITimerCallback> cb = new ServiceWorkerPrivateTimerCallback(
1383       this, &ServiceWorkerPrivate::NoteIdleWorkerCallback);
1384   DebugOnly<nsresult> rv =
1385       mIdleWorkerTimer->InitWithCallback(cb, timeout, nsITimer::TYPE_ONE_SHOT);
1386   MOZ_ASSERT(NS_SUCCEEDED(rv));
1387 }
1388
1389 void ServiceWorkerPrivate::AddToken() {
1390   MOZ_ASSERT(NS_IsMainThread());
1391   ++mTokenCount;
1392 }
1393
1394 void ServiceWorkerPrivate::ReleaseToken() {
1395   MOZ_ASSERT(NS_IsMainThread());
1396
1397   MOZ_ASSERT(mTokenCount > 0);
1398   --mTokenCount;
1399
1400   if (IsIdle()) {
1401     mIdlePromiseHolder.ResolveIfExists(true, __func__);
1402
1403     if (!mTokenCount) {
1404       TerminateWorker();
1405     }
1406
1407     // mInfo can be nullptr here if NoteDeadServiceWorkerInfo() is called while
1408     // the KeepAliveToken is being proxy released as a runnable.
1409     else if (mInfo) {
1410       RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
1411       if (swm) {
1412         swm->WorkerIsIdle(mInfo);
1413       }
1414     }
1415   }
1416 }
1417
1418 already_AddRefed<KeepAliveToken>
1419 ServiceWorkerPrivate::CreateEventKeepAliveToken() {
1420   MOZ_ASSERT(NS_IsMainThread());
1421
1422   // When the WorkerPrivate is in a separate process, we first hold a normal
1423   // KeepAliveToken. Then, after we're notified that the worker is alive, we
1424   // create the idle KeepAliveToken.
1425   MOZ_ASSERT(mIdleKeepAliveToken || mControllerChild);
1426
1427   RefPtr<KeepAliveToken> ref = new KeepAliveToken(this);
1428   return ref.forget();
1429 }
1430
1431 void ServiceWorkerPrivate::SetHandlesFetch(bool aValue) {
1432   MOZ_ASSERT(NS_IsMainThread());
1433
1434   if (NS_WARN_IF(!mInfo)) {
1435     return;
1436   }
1437
1438   mInfo->SetHandlesFetch(aValue);
1439 }
1440
1441 RefPtr<GenericPromise> ServiceWorkerPrivate::SetSkipWaitingFlag() {
1442   AssertIsOnMainThread();
1443   MOZ_ASSERT(mInfo);
1444
1445   RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
1446
1447   if (!swm) {
1448     return GenericPromise::CreateAndReject(NS_ERROR_FAILURE, __func__);
1449   }
1450
1451   RefPtr<ServiceWorkerRegistrationInfo> regInfo =
1452       swm->GetRegistration(mInfo->Principal(), mInfo->Scope());
1453
1454   if (!regInfo) {
1455     return GenericPromise::CreateAndReject(NS_ERROR_FAILURE, __func__);
1456   }
1457
1458   mInfo->SetSkipWaitingFlag();
1459
1460   RefPtr<GenericPromise::Private> promise =
1461       new GenericPromise::Private(__func__);
1462
1463   regInfo->TryToActivateAsync([promise] { promise->Resolve(true, __func__); });
1464
1465   return promise;
1466 }
1467
1468 /* static */
1469 void ServiceWorkerPrivate::UpdateRunning(int32_t aDelta, int32_t aFetchDelta) {
1470   // Record values for time we were running at the current values
1471   RefPtr<ServiceWorkerManager> manager(ServiceWorkerManager::GetInstance());
1472   manager->RecordTelemetry(sRunningServiceWorkers, sRunningServiceWorkersFetch);
1473
1474   MOZ_ASSERT(((int64_t)sRunningServiceWorkers) + aDelta >= 0);
1475   sRunningServiceWorkers += aDelta;
1476   if (sRunningServiceWorkers > sRunningServiceWorkersMax) {
1477     sRunningServiceWorkersMax = sRunningServiceWorkers;
1478     LOG(("ServiceWorker max now %d", sRunningServiceWorkersMax));
1479     Telemetry::ScalarSet(Telemetry::ScalarID::SERVICEWORKER_RUNNING_MAX,
1480                          u"All"_ns, sRunningServiceWorkersMax);
1481   }
1482   MOZ_ASSERT(((int64_t)sRunningServiceWorkersFetch) + aFetchDelta >= 0);
1483   sRunningServiceWorkersFetch += aFetchDelta;
1484   if (sRunningServiceWorkersFetch > sRunningServiceWorkersFetchMax) {
1485     sRunningServiceWorkersFetchMax = sRunningServiceWorkersFetch;
1486     LOG(("ServiceWorker Fetch max now %d", sRunningServiceWorkersFetchMax));
1487     Telemetry::ScalarSet(Telemetry::ScalarID::SERVICEWORKER_RUNNING_MAX,
1488                          u"Fetch"_ns, sRunningServiceWorkersFetchMax);
1489   }
1490   LOG(("ServiceWorkers running now %d/%d", sRunningServiceWorkers,
1491        sRunningServiceWorkersFetch));
1492 }
1493
1494 void ServiceWorkerPrivate::CreationFailed() {
1495   MOZ_ASSERT(NS_IsMainThread());
1496   MOZ_ASSERT(mControllerChild);
1497
1498   if (mRemoteWorkerData.remoteType().Find(SERVICEWORKER_REMOTE_TYPE) !=
1499       kNotFound) {
1500     Telemetry::AccumulateTimeDelta(
1501         Telemetry::SERVICE_WORKER_ISOLATED_LAUNCH_TIME,
1502         mServiceWorkerLaunchTimeStart);
1503   } else {
1504     Telemetry::AccumulateTimeDelta(Telemetry::SERVICE_WORKER_LAUNCH_TIME_2,
1505                                    mServiceWorkerLaunchTimeStart);
1506   }
1507
1508   Shutdown();
1509 }
1510
1511 void ServiceWorkerPrivate::CreationSucceeded() {
1512   AssertIsOnMainThread();
1513   MOZ_ASSERT(NS_IsMainThread());
1514   MOZ_ASSERT(mInfo);
1515   MOZ_ASSERT(mControllerChild);
1516
1517   if (mRemoteWorkerData.remoteType().Find(SERVICEWORKER_REMOTE_TYPE) !=
1518       kNotFound) {
1519     Telemetry::AccumulateTimeDelta(
1520         Telemetry::SERVICE_WORKER_ISOLATED_LAUNCH_TIME,
1521         mServiceWorkerLaunchTimeStart);
1522   } else {
1523     Telemetry::AccumulateTimeDelta(Telemetry::SERVICE_WORKER_LAUNCH_TIME_2,
1524                                    mServiceWorkerLaunchTimeStart);
1525   }
1526
1527   RenewKeepAliveToken();
1528
1529   RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
1530   nsCOMPtr<nsIPrincipal> principal = mInfo->Principal();
1531   RefPtr<ServiceWorkerRegistrationInfo> regInfo =
1532       swm->GetRegistration(principal, mInfo->Scope());
1533   if (regInfo) {
1534     // If it's already set, we're done and the running count is already set
1535     if (mHandlesFetch == Unknown) {
1536       if (regInfo->GetActive()) {
1537         mHandlesFetch =
1538             regInfo->GetActive()->HandlesFetch() ? Enabled : Disabled;
1539         if (mHandlesFetch == Enabled) {
1540           UpdateRunning(0, 1);
1541         }
1542       }
1543       // else we're likely still in Evaluating state, and don't know if it
1544       // handles fetch.  If so, defer updating the counter for Fetch until we
1545       // finish evaluation.  We already updated the Running count for All in
1546       // SpawnWorkerIfNeeded().
1547     }
1548   }
1549 }
1550
1551 void ServiceWorkerPrivate::ErrorReceived(const ErrorValue& aError) {
1552   AssertIsOnMainThread();
1553   MOZ_ASSERT(mInfo);
1554   MOZ_ASSERT(mControllerChild);
1555
1556   RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
1557   MOZ_ASSERT(swm);
1558
1559   ServiceWorkerInfo* info = mInfo;
1560
1561   swm->HandleError(nullptr, info->Principal(), info->Scope(),
1562                    NS_ConvertUTF8toUTF16(info->ScriptSpec()), u""_ns, u""_ns,
1563                    u""_ns, 0, 0, nsIScriptError::errorFlag, JSEXN_ERR);
1564 }
1565
1566 void ServiceWorkerPrivate::Terminated() {
1567   AssertIsOnMainThread();
1568   MOZ_ASSERT(mInfo);
1569   MOZ_ASSERT(mControllerChild);
1570
1571   Shutdown();
1572 }
1573
1574 void ServiceWorkerPrivate::RefreshRemoteWorkerData(
1575     const RefPtr<ServiceWorkerRegistrationInfo>& aRegistration) {
1576   AssertIsOnMainThread();
1577   MOZ_ASSERT(mInfo);
1578
1579   ServiceWorkerData& serviceWorkerData =
1580       mRemoteWorkerData.serviceWorkerData().get_ServiceWorkerData();
1581   serviceWorkerData.descriptor() = mInfo->Descriptor().ToIPC();
1582   serviceWorkerData.registrationDescriptor() =
1583       aRegistration->Descriptor().ToIPC();
1584 }
1585
1586 RefPtr<FetchServicePromises> ServiceWorkerPrivate::SetupNavigationPreload(
1587     nsCOMPtr<nsIInterceptedChannel>& aChannel,
1588     const RefPtr<ServiceWorkerRegistrationInfo>& aRegistration) {
1589   MOZ_ASSERT(XRE_IsParentProcess());
1590   AssertIsOnMainThread();
1591
1592   // create IPC request from the intercepted channel.
1593   auto result = GetIPCInternalRequest(aChannel);
1594   if (result.isErr()) {
1595     return nullptr;
1596   }
1597   IPCInternalRequest ipcRequest = result.unwrap();
1598
1599   // Step 1. Clone the request for preload
1600   // Create the InternalResponse from the created IPCRequest.
1601   SafeRefPtr<InternalRequest> preloadRequest =
1602       MakeSafeRefPtr<InternalRequest>(ipcRequest);
1603   // Copy the request body from uploadChannel
1604   nsCOMPtr<nsIUploadChannel2> uploadChannel = do_QueryInterface(aChannel);
1605   if (uploadChannel) {
1606     nsCOMPtr<nsIInputStream> uploadStream;
1607     nsresult rv = uploadChannel->CloneUploadStream(
1608         &ipcRequest.bodySize(), getter_AddRefs(uploadStream));
1609     // Fail to get the request's body, stop navigation preload by returning
1610     // nullptr.
1611     if (NS_WARN_IF(NS_FAILED(rv))) {
1612       return FetchService::NetworkErrorResponse(rv);
1613     }
1614     preloadRequest->SetBody(uploadStream, ipcRequest.bodySize());
1615   }
1616
1617   // Set SkipServiceWorker for the navigation preload request
1618   preloadRequest->SetSkipServiceWorker();
1619
1620   // Step 2. Append Service-Worker-Navigation-Preload header with
1621   //         registration->GetNavigationPreloadState().headerValue() on
1622   //         request's header list.
1623   IgnoredErrorResult err;
1624   auto headersGuard = preloadRequest->Headers()->Guard();
1625   preloadRequest->Headers()->SetGuard(HeadersGuardEnum::None, err);
1626   preloadRequest->Headers()->Append(
1627       "Service-Worker-Navigation-Preload"_ns,
1628       aRegistration->GetNavigationPreloadState().headerValue(), err);
1629   preloadRequest->Headers()->SetGuard(headersGuard, err);
1630
1631   // Step 3. Perform fetch through FetchService with the cloned request
1632   if (!err.Failed()) {
1633     nsCOMPtr<nsIChannel> underlyingChannel;
1634     MOZ_ALWAYS_SUCCEEDS(
1635         aChannel->GetChannel(getter_AddRefs(underlyingChannel)));
1636     RefPtr<FetchService> fetchService = FetchService::GetInstance();
1637     return fetchService->Fetch(AsVariant(FetchService::NavigationPreloadArgs{
1638         std::move(preloadRequest), underlyingChannel}));
1639   }
1640   return FetchService::NetworkErrorResponse(NS_ERROR_UNEXPECTED);
1641 }
1642
1643 void ServiceWorkerPrivate::Shutdown() {
1644   AssertIsOnMainThread();
1645
1646   if (mControllerChild) {
1647     RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
1648
1649     MOZ_ASSERT(swm,
1650                "All Service Workers should start shutting down before the "
1651                "ServiceWorkerManager does!");
1652
1653     auto shutdownStateId = swm->MaybeInitServiceWorkerShutdownProgress();
1654
1655     RefPtr<GenericNonExclusivePromise> promise =
1656         ShutdownInternal(shutdownStateId);
1657     swm->BlockShutdownOn(promise, shutdownStateId);
1658   }
1659
1660   MOZ_ASSERT(!mControllerChild);
1661 }
1662
1663 RefPtr<GenericNonExclusivePromise> ServiceWorkerPrivate::ShutdownInternal(
1664     uint32_t aShutdownStateId) {
1665   AssertIsOnMainThread();
1666   MOZ_ASSERT(mControllerChild);
1667
1668   mPendingFunctionalEvents.Clear();
1669
1670   mControllerChild->get()->RevokeObserver(this);
1671
1672   if (StaticPrefs::dom_serviceWorkers_testing_enabled()) {
1673     nsCOMPtr<nsIObserverService> os = services::GetObserverService();
1674     if (os) {
1675       os->NotifyObservers(nullptr, "service-worker-shutdown", nullptr);
1676     }
1677   }
1678
1679   RefPtr<GenericNonExclusivePromise::Private> promise =
1680       new GenericNonExclusivePromise::Private(__func__);
1681
1682   Unused << ExecServiceWorkerOp(
1683       ServiceWorkerTerminateWorkerOpArgs(aShutdownStateId),
1684       [promise](ServiceWorkerOpResult&& aResult) {
1685         MOZ_ASSERT(aResult.type() == ServiceWorkerOpResult::Tnsresult);
1686         promise->Resolve(true, __func__);
1687       },
1688       [promise]() { promise->Reject(NS_ERROR_DOM_ABORT_ERR, __func__); });
1689
1690   /**
1691    * After dispatching a termination operation, no new operations should
1692    * be routed through this actor anymore.
1693    */
1694   mControllerChild = nullptr;
1695
1696   // Update here, since Evaluation failures directly call ShutdownInternal
1697   UpdateRunning(-1, mHandlesFetch == Enabled ? -1 : 0);
1698
1699   return promise;
1700 }
1701
1702 nsresult ServiceWorkerPrivate::ExecServiceWorkerOp(
1703     ServiceWorkerOpArgs&& aArgs,
1704     std::function<void(ServiceWorkerOpResult&&)>&& aSuccessCallback,
1705     std::function<void()>&& aFailureCallback) {
1706   AssertIsOnMainThread();
1707   MOZ_ASSERT(
1708       aArgs.type() !=
1709           ServiceWorkerOpArgs::TParentToChildServiceWorkerFetchEventOpArgs,
1710       "FetchEvent operations should be sent through FetchEventOp(Proxy) "
1711       "actors!");
1712   MOZ_ASSERT(aSuccessCallback);
1713
1714   nsresult rv = SpawnWorkerIfNeeded();
1715
1716   if (NS_WARN_IF(NS_FAILED(rv))) {
1717     aFailureCallback();
1718     return rv;
1719   }
1720
1721   MOZ_ASSERT(mControllerChild);
1722
1723   RefPtr<ServiceWorkerPrivate> self = this;
1724   RefPtr<RAIIActorPtrHolder> holder = mControllerChild;
1725   RefPtr<KeepAliveToken> token =
1726       aArgs.type() == ServiceWorkerOpArgs::TServiceWorkerTerminateWorkerOpArgs
1727           ? nullptr
1728           : CreateEventKeepAliveToken();
1729
1730   /**
1731    * NOTE: moving `aArgs` won't do anything until IPDL `SendMethod()` methods
1732    * can accept rvalue references rather than just const references.
1733    */
1734   mControllerChild->get()->SendExecServiceWorkerOp(aArgs)->Then(
1735       GetCurrentSerialEventTarget(), __func__,
1736       [self = std::move(self), holder = std::move(holder),
1737        token = std::move(token), onSuccess = std::move(aSuccessCallback),
1738        onFailure = std::move(aFailureCallback)](
1739           PRemoteWorkerControllerChild::ExecServiceWorkerOpPromise::
1740               ResolveOrRejectValue&& aResult) {
1741         if (NS_WARN_IF(aResult.IsReject())) {
1742           onFailure();
1743           return;
1744         }
1745
1746         onSuccess(std::move(aResult.ResolveValue()));
1747       });
1748
1749   return NS_OK;
1750 }
1751
1752 }  // namespace mozilla::dom