1 files changed, 651 insertions, 0 deletions
diff --git a/dom/workers/loader/CacheLoadHandler.cpp b/dom/workers/loader/CacheLoadHandler.cpp
new file mode 100644
index 0000000000..3e43ce224c
--- /dev/null
+++ b/dom/workers/loader/CacheLoadHandler.cpp
@@ -0,0 +1,651 @@
+/* -*- 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 "CacheLoadHandler.h"
+#include "ScriptResponseHeaderProcessor.h"  // ScriptResponseHeaderProcessor
+#include "WorkerLoadContext.h"              // WorkerLoadContext
+
+#include "nsIPrincipal.h"
+
+#include "nsIThreadRetargetableRequest.h"
+#include "nsIXPConnect.h"
+
+#include "jsapi.h"
+#include "nsNetUtil.h"
+
+#include "mozilla/Assertions.h"
+#include "mozilla/Encoding.h"
+#include "mozilla/dom/CacheBinding.h"
+#include "mozilla/dom/cache/CacheTypes.h"
+#include "mozilla/dom/Response.h"
+#include "mozilla/dom/ServiceWorkerBinding.h"  // ServiceWorkerState
+#include "mozilla/Result.h"
+#include "mozilla/TaskQueue.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/WorkerScope.h"
+
+#include "mozilla/dom/workerinternals/ScriptLoader.h"  // WorkerScriptLoader
+
+namespace mozilla {
+namespace dom {
+
+namespace workerinternals::loader {
+
+NS_IMPL_ISUPPORTS0(CacheCreator)
+
+NS_IMPL_ISUPPORTS(CacheLoadHandler, nsIStreamLoaderObserver)
+
+NS_IMPL_ISUPPORTS0(CachePromiseHandler)
+
+CachePromiseHandler::CachePromiseHandler(
+    WorkerScriptLoader* aLoader, ThreadSafeRequestHandle* aRequestHandle)
+    : mLoader(aLoader), mRequestHandle(aRequestHandle) {
+  AssertIsOnMainThread();
+  MOZ_ASSERT(mLoader);
+}
+
+void CachePromiseHandler::ResolvedCallback(JSContext* aCx,
+                                           JS::Handle<JS::Value> aValue,
+                                           ErrorResult& aRv) {
+  AssertIsOnMainThread();
+  if (mRequestHandle->IsEmpty()) {
+    return;
+  }
+  WorkerLoadContext* loadContext = mRequestHandle->GetContext();
+
+  // May already have been canceled by CacheLoadHandler::Fail from
+  // CancelMainThread.
+  MOZ_ASSERT(loadContext->mCacheStatus == WorkerLoadContext::WritingToCache ||
+             loadContext->mCacheStatus == WorkerLoadContext::Cancel);
+  MOZ_ASSERT_IF(loadContext->mCacheStatus == WorkerLoadContext::Cancel,
+                !loadContext->mCachePromise);
+
+  if (loadContext->mCachePromise) {
+    loadContext->mCacheStatus = WorkerLoadContext::Cached;
+    loadContext->mCachePromise = nullptr;
+    mRequestHandle->MaybeExecuteFinishedScripts();
+  }
+}
+
+void CachePromiseHandler::RejectedCallback(JSContext* aCx,
+                                           JS::Handle<JS::Value> aValue,
+                                           ErrorResult& aRv) {
+  AssertIsOnMainThread();
+  if (mRequestHandle->IsEmpty()) {
+    return;
+  }
+  WorkerLoadContext* loadContext = mRequestHandle->GetContext();
+
+  // May already have been canceled by CacheLoadHandler::Fail from
+  // CancelMainThread.
+  MOZ_ASSERT(loadContext->mCacheStatus == WorkerLoadContext::WritingToCache ||
+             loadContext->mCacheStatus == WorkerLoadContext::Cancel);
+  loadContext->mCacheStatus = WorkerLoadContext::Cancel;
+
+  loadContext->mCachePromise = nullptr;
+
+  // This will delete the cache object and will call LoadingFinished() with an
+  // error for each ongoing operation.
+  auto* cacheCreator = mRequestHandle->GetCacheCreator();
+  if (cacheCreator) {
+    cacheCreator->DeleteCache(NS_ERROR_FAILURE);
+  }
+}
+
+CacheCreator::CacheCreator(WorkerPrivate* aWorkerPrivate)
+    : mCacheName(aWorkerPrivate->ServiceWorkerCacheName()),
+      mOriginAttributes(aWorkerPrivate->GetOriginAttributes()) {
+  MOZ_ASSERT(aWorkerPrivate->IsServiceWorker());
+}
+
+nsresult CacheCreator::CreateCacheStorage(nsIPrincipal* aPrincipal) {
+  AssertIsOnMainThread();
+  MOZ_ASSERT(!mCacheStorage);
+  MOZ_ASSERT(aPrincipal);
+
+  nsIXPConnect* xpc = nsContentUtils::XPConnect();
+  MOZ_ASSERT(xpc, "This should never be null!");
+
+  AutoJSAPI jsapi;
+  jsapi.Init();
+  JSContext* cx = jsapi.cx();
+  JS::Rooted<JSObject*> sandbox(cx);
+  nsresult rv = xpc->CreateSandbox(cx, aPrincipal, sandbox.address());
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  // The JSContext is not in a realm, so CreateSandbox returned an unwrapped
+  // global.
+  MOZ_ASSERT(JS_IsGlobalObject(sandbox));
+
+  mSandboxGlobalObject = xpc::NativeGlobal(sandbox);
+  if (NS_WARN_IF(!mSandboxGlobalObject)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // If we're in private browsing mode, don't even try to create the
+  // CacheStorage.  Instead, just fail immediately to terminate the
+  // ServiceWorker load.
+  if (NS_WARN_IF(mOriginAttributes.mPrivateBrowsingId > 0)) {
+    return NS_ERROR_DOM_SECURITY_ERR;
+  }
+
+  // Create a CacheStorage bypassing its trusted origin checks.  The
+  // ServiceWorker has already performed its own checks before getting
+  // to this point.
+  ErrorResult error;
+  mCacheStorage = CacheStorage::CreateOnMainThread(
+      mozilla::dom::cache::CHROME_ONLY_NAMESPACE, mSandboxGlobalObject,
+      aPrincipal, true /* force trusted origin */, error);
+  if (NS_WARN_IF(error.Failed())) {
+    return error.StealNSResult();
+  }
+
+  return NS_OK;
+}
+
+nsresult CacheCreator::Load(nsIPrincipal* aPrincipal) {
+  AssertIsOnMainThread();
+  MOZ_ASSERT(!mLoaders.IsEmpty());
+
+  nsresult rv = CreateCacheStorage(aPrincipal);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  ErrorResult error;
+  MOZ_ASSERT(!mCacheName.IsEmpty());
+  RefPtr<Promise> promise = mCacheStorage->Open(mCacheName, error);
+  if (NS_WARN_IF(error.Failed())) {
+    return error.StealNSResult();
+  }
+
+  promise->AppendNativeHandler(this);
+  return NS_OK;
+}
+
+void CacheCreator::FailLoaders(nsresult aRv) {
+  AssertIsOnMainThread();
+
+  // Fail() can call LoadingFinished() which may call ExecuteFinishedScripts()
+  // which sets mCacheCreator to null, so hold a ref.
+  RefPtr<CacheCreator> kungfuDeathGrip = this;
+
+  for (uint32_t i = 0, len = mLoaders.Length(); i < len; ++i) {
+    mLoaders[i]->Fail(aRv);
+  }
+
+  mLoaders.Clear();
+}
+
+void CacheCreator::RejectedCallback(JSContext* aCx,
+                                    JS::Handle<JS::Value> aValue,
+                                    ErrorResult& aRv) {
+  AssertIsOnMainThread();
+  FailLoaders(NS_ERROR_FAILURE);
+}
+
+void CacheCreator::ResolvedCallback(JSContext* aCx,
+                                    JS::Handle<JS::Value> aValue,
+                                    ErrorResult& aRv) {
+  AssertIsOnMainThread();
+  if (!aValue.isObject()) {
+    FailLoaders(NS_ERROR_FAILURE);
+    return;
+  }
+
+  JS::Rooted<JSObject*> obj(aCx, &aValue.toObject());
+  Cache* cache = nullptr;
+  nsresult rv = UNWRAP_OBJECT(Cache, &obj, cache);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    FailLoaders(NS_ERROR_FAILURE);
+    return;
+  }
+
+  mCache = cache;
+  MOZ_DIAGNOSTIC_ASSERT(mCache);
+
+  // If the worker is canceled, CancelMainThread() will have cleared the
+  // loaders via DeleteCache().
+  for (uint32_t i = 0, len = mLoaders.Length(); i < len; ++i) {
+    mLoaders[i]->Load(cache);
+  }
+}
+
+void CacheCreator::DeleteCache(nsresult aReason) {
+  AssertIsOnMainThread();
+
+  // This is called when the load is canceled which can occur before
+  // mCacheStorage is initialized.
+  if (mCacheStorage) {
+    // It's safe to do this while Cache::Match() and Cache::Put() calls are
+    // running.
+    RefPtr<Promise> promise = mCacheStorage->Delete(mCacheName, IgnoreErrors());
+
+    // We don't care to know the result of the promise object.
+  }
+
+  // Always call this here to ensure the loaders array is cleared.
+  FailLoaders(NS_ERROR_FAILURE);
+}
+
+CacheLoadHandler::CacheLoadHandler(ThreadSafeWorkerRef* aWorkerRef,
+                                   ThreadSafeRequestHandle* aRequestHandle,
+                                   bool aIsWorkerScript,
+                                   bool aOnlyExistingCachedResourcesAllowed,
+                                   WorkerScriptLoader* aLoader)
+    : mRequestHandle(aRequestHandle),
+      mLoader(aLoader),
+      mWorkerRef(aWorkerRef),
+      mIsWorkerScript(aIsWorkerScript),
+      mFailed(false),
+      mOnlyExistingCachedResourcesAllowed(aOnlyExistingCachedResourcesAllowed) {
+  MOZ_ASSERT(aWorkerRef);
+  MOZ_ASSERT(aWorkerRef->Private()->IsServiceWorker());
+  mMainThreadEventTarget = aWorkerRef->Private()->MainThreadEventTarget();
+  MOZ_ASSERT(mMainThreadEventTarget);
+  mBaseURI = mLoader->GetBaseURI();
+  AssertIsOnMainThread();
+
+  // Worker scripts are always decoded as UTF-8 per spec.
+  mDecoder = MakeUnique<ScriptDecoder>(UTF_8_ENCODING,
+                                       ScriptDecoder::BOMHandling::Remove);
+}
+
+void CacheLoadHandler::Fail(nsresult aRv) {
+  AssertIsOnMainThread();
+  MOZ_ASSERT(NS_FAILED(aRv));
+
+  if (mFailed) {
+    return;
+  }
+
+  mFailed = true;
+
+  if (mPump) {
+    MOZ_ASSERT_IF(!mRequestHandle->IsEmpty(),
+                  mRequestHandle->GetContext()->mCacheStatus ==
+                      WorkerLoadContext::ReadingFromCache);
+    mPump->Cancel(aRv);
+    mPump = nullptr;
+  }
+  if (mRequestHandle->IsEmpty()) {
+    return;
+  }
+
+  WorkerLoadContext* loadContext = mRequestHandle->GetContext();
+
+  loadContext->mCacheStatus = WorkerLoadContext::Cancel;
+
+  if (loadContext->mCachePromise) {
+    loadContext->mCachePromise->MaybeReject(aRv);
+  }
+
+  loadContext->mCachePromise = nullptr;
+
+  mRequestHandle->LoadingFinished(aRv);
+}
+
+void CacheLoadHandler::Load(Cache* aCache) {
+  AssertIsOnMainThread();
+  MOZ_ASSERT(aCache);
+  MOZ_ASSERT(!mRequestHandle->IsEmpty());
+  WorkerLoadContext* loadContext = mRequestHandle->GetContext();
+
+  nsCOMPtr<nsIURI> uri;
+  nsresult rv = NS_NewURI(getter_AddRefs(uri), loadContext->mRequest->mURL,
+                          nullptr, mBaseURI);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    Fail(rv);
+    return;
+  }
+
+  nsAutoCString spec;
+  rv = uri->GetSpec(spec);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    Fail(rv);
+    return;
+  }
+
+  MOZ_ASSERT(loadContext->mFullURL.IsEmpty());
+  CopyUTF8toUTF16(spec, loadContext->mFullURL);
+
+  mozilla::dom::RequestOrUSVString request;
+  request.SetAsUSVString().ShareOrDependUpon(loadContext->mFullURL);
+
+  mozilla::dom::CacheQueryOptions params;
+
+  // This JSContext will not end up executing JS code because here there are
+  // no ReadableStreams involved.
+  AutoJSAPI jsapi;
+  jsapi.Init();
+
+  ErrorResult error;
+  RefPtr<Promise> promise = aCache->Match(jsapi.cx(), request, params, error);
+  if (NS_WARN_IF(error.Failed())) {
+    Fail(error.StealNSResult());
+    return;
+  }
+
+  promise->AppendNativeHandler(this);
+}
+
+void CacheLoadHandler::RejectedCallback(JSContext* aCx,
+                                        JS::Handle<JS::Value> aValue,
+                                        ErrorResult& aRv) {
+  AssertIsOnMainThread();
+  MOZ_ASSERT(!mRequestHandle->IsEmpty());
+
+  MOZ_ASSERT(mRequestHandle->GetContext()->mCacheStatus ==
+             WorkerLoadContext::Uncached);
+  Fail(NS_ERROR_FAILURE);
+}
+
+void CacheLoadHandler::ResolvedCallback(JSContext* aCx,
+                                        JS::Handle<JS::Value> aValue,
+                                        ErrorResult& aRv) {
+  AssertIsOnMainThread();
+  MOZ_ASSERT(!mRequestHandle->IsEmpty());
+  WorkerLoadContext* loadContext = mRequestHandle->GetContext();
+
+  // If we have already called 'Fail', we should not proceed. If we cancelled,
+  // we should similarily not proceed.
+  if (mFailed) {
+    return;
+  }
+
+  MOZ_ASSERT(loadContext->mCacheStatus == WorkerLoadContext::Uncached);
+
+  nsresult rv;
+
+  // The ServiceWorkerScriptCache will store data for any scripts it
+  // it knows about.  This is always at least the top level script.
+  // Depending on if a previous version of the service worker has
+  // been installed or not it may also know about importScripts().  We
+  // must handle loading and offlining new importScripts() here, however.
+  if (aValue.isUndefined()) {
+    // If this is the main script or we're not loading a new service worker
+    // then this is an error.  This can happen for internal reasons, like
+    // storage was probably wiped without removing the service worker
+    // registration.  It can also happen for exposed reasons like the
+    // service worker script calling importScripts() after install.
+    if (NS_WARN_IF(mIsWorkerScript || mOnlyExistingCachedResourcesAllowed)) {
+      Fail(NS_ERROR_DOM_INVALID_STATE_ERR);
+      return;
+    }
+
+    loadContext->mCacheStatus = WorkerLoadContext::ToBeCached;
+    rv = mLoader->LoadScript(mRequestHandle);
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      Fail(rv);
+    }
+    return;
+  }
+
+  MOZ_ASSERT(aValue.isObject());
+
+  JS::Rooted<JSObject*> obj(aCx, &aValue.toObject());
+  mozilla::dom::Response* response = nullptr;
+  rv = UNWRAP_OBJECT(Response, &obj, response);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    Fail(rv);
+    return;
+  }
+
+  InternalHeaders* headers = response->GetInternalHeaders();
+
+  headers->Get("content-security-policy"_ns, mCSPHeaderValue, IgnoreErrors());
+  headers->Get("content-security-policy-report-only"_ns,
+               mCSPReportOnlyHeaderValue, IgnoreErrors());
+  headers->Get("referrer-policy"_ns, mReferrerPolicyHeaderValue,
+               IgnoreErrors());
+
+  nsAutoCString coepHeader;
+  headers->Get("cross-origin-embedder-policy"_ns, coepHeader, IgnoreErrors());
+
+  nsILoadInfo::CrossOriginEmbedderPolicy coep =
+      NS_GetCrossOriginEmbedderPolicyFromHeader(
+          coepHeader, mWorkerRef->Private()->Trials().IsEnabled(
+                          OriginTrial::CoepCredentialless));
+
+  rv = ScriptResponseHeaderProcessor::ProcessCrossOriginEmbedderPolicyHeader(
+      mWorkerRef->Private(), coep, loadContext->IsTopLevel());
+
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    Fail(rv);
+    return;
+  }
+
+  nsCOMPtr<nsIInputStream> inputStream;
+  response->GetBody(getter_AddRefs(inputStream));
+  mChannelInfo = response->GetChannelInfo();
+  const UniquePtr<PrincipalInfo>& pInfo = response->GetPrincipalInfo();
+  if (pInfo) {
+    mPrincipalInfo = mozilla::MakeUnique<PrincipalInfo>(*pInfo);
+  }
+
+  if (!inputStream) {
+    loadContext->mCacheStatus = WorkerLoadContext::Cached;
+
+    if (mRequestHandle->IsCancelled()) {
+      auto* cacheCreator = mRequestHandle->GetCacheCreator();
+      if (cacheCreator) {
+        cacheCreator->DeleteCache(mRequestHandle->GetCancelResult());
+      }
+      return;
+    }
+
+    nsresult rv = DataReceivedFromCache(
+        (uint8_t*)"", 0, mChannelInfo, std::move(mPrincipalInfo),
+        mCSPHeaderValue, mCSPReportOnlyHeaderValue, mReferrerPolicyHeaderValue);
+
+    mRequestHandle->OnStreamComplete(rv);
+    return;
+  }
+
+  MOZ_ASSERT(!mPump);
+  rv = NS_NewInputStreamPump(getter_AddRefs(mPump), inputStream.forget(),
+                             0,     /* default segsize */
+                             0,     /* default segcount */
+                             false, /* default closeWhenDone */
+                             mMainThreadEventTarget);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    Fail(rv);
+    return;
+  }
+
+  nsCOMPtr<nsIStreamLoader> loader;
+  rv = NS_NewStreamLoader(getter_AddRefs(loader), this);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    Fail(rv);
+    return;
+  }
+
+  rv = mPump->AsyncRead(loader);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    mPump = nullptr;
+    Fail(rv);
+    return;
+  }
+
+  nsCOMPtr<nsIThreadRetargetableRequest> rr = do_QueryInterface(mPump);
+  if (rr) {
+    nsCOMPtr<nsIEventTarget> sts =
+        do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
+    RefPtr<TaskQueue> queue =
+        TaskQueue::Create(sts.forget(), "CacheLoadHandler STS Delivery Queue");
+    rv = rr->RetargetDeliveryTo(queue);
+    if (NS_FAILED(rv)) {
+      NS_WARNING("Failed to dispatch the nsIInputStreamPump to a IO thread.");
+    }
+  }
+
+  loadContext->mCacheStatus = WorkerLoadContext::ReadingFromCache;
+}
+
+NS_IMETHODIMP
+CacheLoadHandler::OnStreamComplete(nsIStreamLoader* aLoader,
+                                   nsISupports* aContext, nsresult aStatus,
+                                   uint32_t aStringLen,
+                                   const uint8_t* aString) {
+  AssertIsOnMainThread();
+  if (mRequestHandle->IsEmpty()) {
+    return NS_OK;
+  }
+  WorkerLoadContext* loadContext = mRequestHandle->GetContext();
+
+  mPump = nullptr;
+
+  if (NS_FAILED(aStatus)) {
+    MOZ_ASSERT(loadContext->mCacheStatus ==
+                   WorkerLoadContext::ReadingFromCache ||
+               loadContext->mCacheStatus == WorkerLoadContext::Cancel);
+    Fail(aStatus);
+    return NS_OK;
+  }
+
+  MOZ_ASSERT(loadContext->mCacheStatus == WorkerLoadContext::ReadingFromCache);
+  loadContext->mCacheStatus = WorkerLoadContext::Cached;
+
+  MOZ_ASSERT(mPrincipalInfo);
+
+  nsresult rv = DataReceivedFromCache(
+      aString, aStringLen, mChannelInfo, std::move(mPrincipalInfo),
+      mCSPHeaderValue, mCSPReportOnlyHeaderValue, mReferrerPolicyHeaderValue);
+  return mRequestHandle->OnStreamComplete(rv);
+}
+
+nsresult CacheLoadHandler::DataReceivedFromCache(
+    const uint8_t* aString, uint32_t aStringLen,
+    const mozilla::dom::ChannelInfo& aChannelInfo,
+    UniquePtr<PrincipalInfo> aPrincipalInfo, const nsACString& aCSPHeaderValue,
+    const nsACString& aCSPReportOnlyHeaderValue,
+    const nsACString& aReferrerPolicyHeaderValue) {
+  AssertIsOnMainThread();
+  if (mRequestHandle->IsEmpty()) {
+    return NS_OK;
+  }
+  WorkerLoadContext* loadContext = mRequestHandle->GetContext();
+
+  MOZ_ASSERT(loadContext->mCacheStatus == WorkerLoadContext::Cached);
+  MOZ_ASSERT(loadContext->mRequest);
+
+  auto responsePrincipalOrErr = PrincipalInfoToPrincipal(*aPrincipalInfo);
+  MOZ_DIAGNOSTIC_ASSERT(responsePrincipalOrErr.isOk());
+
+  nsIPrincipal* principal = mWorkerRef->Private()->GetPrincipal();
+  if (!principal) {
+    WorkerPrivate* parentWorker = mWorkerRef->Private()->GetParent();
+    MOZ_ASSERT(parentWorker, "Must have a parent!");
+    principal = parentWorker->GetPrincipal();
+  }
+
+  nsCOMPtr<nsIPrincipal> responsePrincipal = responsePrincipalOrErr.unwrap();
+
+  loadContext->mMutedErrorFlag.emplace(!principal->Subsumes(responsePrincipal));
+
+  // May be null.
+  Document* parentDoc = mWorkerRef->Private()->GetDocument();
+
+  // Use the regular ScriptDecoder Decoder for this grunt work! Should be just
+  // fine because we're running on the main thread.
+  nsresult rv;
+
+  // Set the Source type to "text" for decoding.
+  loadContext->mRequest->SetTextSource();
+
+  rv = mDecoder->DecodeRawData(loadContext->mRequest, aString, aStringLen,
+                               /* aEndOfStream = */ true);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (!loadContext->mRequest->ScriptTextLength()) {
+    nsContentUtils::ReportToConsole(nsIScriptError::warningFlag, "DOM"_ns,
+                                    parentDoc, nsContentUtils::eDOM_PROPERTIES,
+                                    "EmptyWorkerSourceWarning");
+  }
+
+  nsCOMPtr<nsIURI> finalURI;
+  rv = NS_NewURI(getter_AddRefs(finalURI), loadContext->mFullURL);
+  if (!loadContext->mRequest->mBaseURL) {
+    loadContext->mRequest->mBaseURL = finalURI;
+  }
+  if (loadContext->IsTopLevel()) {
+    if (NS_SUCCEEDED(rv)) {
+      mWorkerRef->Private()->SetBaseURI(finalURI);
+    }
+
+#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
+    nsIPrincipal* principal = mWorkerRef->Private()->GetPrincipal();
+    MOZ_DIAGNOSTIC_ASSERT(principal);
+
+    bool equal = false;
+    MOZ_ALWAYS_SUCCEEDS(responsePrincipal->Equals(principal, &equal));
+    MOZ_DIAGNOSTIC_ASSERT(equal);
+
+    nsCOMPtr<nsIContentSecurityPolicy> csp;
+    if (parentDoc) {
+      csp = parentDoc->GetCsp();
+    }
+    MOZ_DIAGNOSTIC_ASSERT(!csp);
+#endif
+
+    mWorkerRef->Private()->InitChannelInfo(aChannelInfo);
+
+    nsILoadGroup* loadGroup = mWorkerRef->Private()->GetLoadGroup();
+    MOZ_DIAGNOSTIC_ASSERT(loadGroup);
+
+    // Override the principal on the WorkerPrivate.  This is only necessary
+    // in order to get a principal with exactly the correct URL.  The fetch
+    // referrer logic depends on the WorkerPrivate principal having a URL
+    // that matches the worker script URL.  If bug 1340694 is ever fixed
+    // this can be removed.
+    // XXX: force the partitionedPrincipal to be equal to the response one.
+    // This is OK for now because we don't want to expose partitionedPrincipal
+    // functionality in ServiceWorkers yet.
+    rv = mWorkerRef->Private()->SetPrincipalsAndCSPOnMainThread(
+        responsePrincipal, responsePrincipal, loadGroup, nullptr);
+    MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+
+    rv = mWorkerRef->Private()->SetCSPFromHeaderValues(
+        aCSPHeaderValue, aCSPReportOnlyHeaderValue);
+    MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+
+    mWorkerRef->Private()->UpdateReferrerInfoFromHeader(
+        aReferrerPolicyHeaderValue);
+  }
+
+  if (NS_SUCCEEDED(rv)) {
+    DataReceived();
+  }
+
+  return rv;
+}
+
+void CacheLoadHandler::DataReceived() {
+  MOZ_ASSERT(!mRequestHandle->IsEmpty());
+  WorkerLoadContext* loadContext = mRequestHandle->GetContext();
+
+  if (loadContext->IsTopLevel()) {
+    WorkerPrivate* parent = mWorkerRef->Private()->GetParent();
+
+    if (parent) {
+      // XHR Params Allowed
+      mWorkerRef->Private()->SetXHRParamsAllowed(parent->XHRParamsAllowed());
+
+      // Set Eval and ContentSecurityPolicy
+      mWorkerRef->Private()->SetCsp(parent->GetCsp());
+      mWorkerRef->Private()->SetEvalAllowed(parent->IsEvalAllowed());
+      mWorkerRef->Private()->SetWasmEvalAllowed(parent->IsWasmEvalAllowed());
+    }
+  }
+}
+
+}  // namespace workerinternals::loader
+
+}  // namespace dom
+}  // namespace mozilla