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-rw-r--r--dom/serviceworkers/ServiceWorkerInterceptController.cpp173
1 files changed, 173 insertions, 0 deletions
diff --git a/dom/serviceworkers/ServiceWorkerInterceptController.cpp b/dom/serviceworkers/ServiceWorkerInterceptController.cpp
new file mode 100644
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+++ b/dom/serviceworkers/ServiceWorkerInterceptController.cpp
@@ -0,0 +1,173 @@
+/* -*- 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 "ServiceWorkerInterceptController.h"
+
+#include "mozilla/BasePrincipal.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/StaticPrefs_privacy.h"
+#include "mozilla/StorageAccess.h"
+#include "mozilla/StoragePrincipalHelper.h"
+#include "mozilla/dom/CanonicalBrowsingContext.h"
+#include "mozilla/dom/InternalRequest.h"
+#include "mozilla/net/HttpBaseChannel.h"
+#include "nsCOMPtr.h"
+#include "nsContentUtils.h"
+#include "nsIChannel.h"
+#include "nsICookieJarSettings.h"
+#include "ServiceWorkerManager.h"
+#include "nsIPrincipal.h"
+#include "nsQueryObject.h"
+
+namespace mozilla::dom {
+
+namespace {
+bool IsWithinObjectOrEmbed(const nsCOMPtr<nsILoadInfo>& loadInfo) {
+ RefPtr<BrowsingContext> browsingContext;
+ loadInfo->GetTargetBrowsingContext(getter_AddRefs(browsingContext));
+
+ for (BrowsingContext* cur = browsingContext.get(); cur;
+ cur = cur->GetParent()) {
+ if (cur->IsEmbedderTypeObjectOrEmbed()) {
+ return true;
+ }
+ }
+
+ return false;
+}
+} // namespace
+
+NS_IMPL_ISUPPORTS(ServiceWorkerInterceptController,
+ nsINetworkInterceptController)
+
+NS_IMETHODIMP
+ServiceWorkerInterceptController::ShouldPrepareForIntercept(
+ nsIURI* aURI, nsIChannel* aChannel, bool* aShouldIntercept) {
+ *aShouldIntercept = false;
+
+ nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo();
+
+ // Block interception if the request's destination is within an object or
+ // embed element.
+ if (IsWithinObjectOrEmbed(loadInfo)) {
+ return NS_OK;
+ }
+
+ RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
+
+ // For subresource requests we base our decision solely on the client's
+ // controller value. Any settings that would have blocked service worker
+ // access should have been set before the initial navigation created the
+ // window.
+ if (!nsContentUtils::IsNonSubresourceRequest(aChannel)) {
+ const Maybe<ServiceWorkerDescriptor>& controller =
+ loadInfo->GetController();
+
+ // If the controller doesn't handle fetch events, return false
+ if (!controller.isSome()) {
+ return NS_OK;
+ }
+
+ *aShouldIntercept = controller.ref().HandlesFetch();
+
+ // The service worker has no fetch event handler, try to schedule a
+ // soft-update through ServiceWorkerRegistrationInfo.
+ // Get ServiceWorkerRegistrationInfo by the ServiceWorkerInfo's principal
+ // and scope
+ if (!*aShouldIntercept && swm) {
+ nsCOMPtr<nsIPrincipal> principal =
+ controller.ref().GetPrincipal().unwrap();
+ RefPtr<ServiceWorkerRegistrationInfo> registration =
+ swm->GetRegistration(principal, controller.ref().Scope());
+ // Could not get ServiceWorkerRegistration here if unregister is
+ // executed before getting here.
+ if (NS_WARN_IF(!registration)) {
+ return NS_OK;
+ }
+ registration->MaybeScheduleTimeCheckAndUpdate();
+ }
+
+ RefPtr<net::HttpBaseChannel> httpChannel = do_QueryObject(aChannel);
+
+ if (httpChannel &&
+ httpChannel->GetRequestHead()->HasHeader(net::nsHttp::Range)) {
+ RequestMode requestMode =
+ InternalRequest::MapChannelToRequestMode(aChannel);
+ bool mayLoad = nsContentUtils::CheckMayLoad(
+ loadInfo->GetLoadingPrincipal(), aChannel,
+ /*allowIfInheritsPrincipal*/ false);
+ if (requestMode == RequestMode::No_cors && !mayLoad) {
+ *aShouldIntercept = false;
+ }
+ }
+
+ return NS_OK;
+ }
+
+ nsCOMPtr<nsIPrincipal> principal;
+ nsresult rv = StoragePrincipalHelper::GetPrincipal(
+ aChannel,
+ StaticPrefs::privacy_partition_serviceWorkers()
+ ? StoragePrincipalHelper::eForeignPartitionedPrincipal
+ : StoragePrincipalHelper::eRegularPrincipal,
+ getter_AddRefs(principal));
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // First check with the ServiceWorkerManager for a matching service worker.
+ if (!swm || !swm->IsAvailable(principal, aURI, aChannel)) {
+ return NS_OK;
+ }
+
+ // Check if we're in a secure context, unless service worker testing is
+ // enabled.
+ if (!nsContentUtils::ComputeIsSecureContext(aChannel) &&
+ !StaticPrefs::dom_serviceWorkers_testing_enabled()) {
+ return NS_OK;
+ }
+
+ // Then check to see if we are allowed to control the window.
+ // It is important to check for the availability of the service worker first
+ // to avoid showing warnings about the use of third-party cookies in the UI
+ // unnecessarily when no service worker is being accessed.
+ auto storageAccess = StorageAllowedForChannel(aChannel);
+ if (storageAccess != StorageAccess::eAllow) {
+ if (!StaticPrefs::privacy_partition_serviceWorkers()) {
+ return NS_OK;
+ }
+
+ nsCOMPtr<nsICookieJarSettings> cookieJarSettings;
+ loadInfo->GetCookieJarSettings(getter_AddRefs(cookieJarSettings));
+
+ if (!StoragePartitioningEnabled(storageAccess, cookieJarSettings)) {
+ return NS_OK;
+ }
+ }
+
+ *aShouldIntercept = true;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ServiceWorkerInterceptController::ChannelIntercepted(
+ nsIInterceptedChannel* aChannel) {
+ // Note, do not cancel the interception here. The caller will try to
+ // ResetInterception() on error.
+
+ RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
+ if (!swm) {
+ return NS_ERROR_FAILURE;
+ }
+
+ ErrorResult error;
+ swm->DispatchFetchEvent(aChannel, error);
+ if (NS_WARN_IF(error.Failed())) {
+ return error.StealNSResult();
+ }
+
+ return NS_OK;
+}
+
+} // namespace mozilla::dom