mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-11 16:32:59 +00:00
732d1c0830
Differential Revision: https://phabricator.services.mozilla.com/D79434
129 lines
4.0 KiB
C++
129 lines
4.0 KiB
C++
/* -*- 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 "StorageNotifierService.h"
|
|
#include "mozilla/ClearOnShutdown.h"
|
|
#include "mozilla/StaticPtr.h"
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
namespace {
|
|
|
|
// This boolean is used to avoid the creation of the service after been
|
|
// distroyed on shutdown.
|
|
bool gStorageShuttingDown = false;
|
|
|
|
StaticRefPtr<StorageNotifierService> gStorageNotifierService;
|
|
|
|
} // namespace
|
|
|
|
/* static */
|
|
StorageNotifierService* StorageNotifierService::GetOrCreate() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
if (!gStorageNotifierService && !gStorageShuttingDown) {
|
|
gStorageNotifierService = new StorageNotifierService();
|
|
ClearOnShutdown(&gStorageNotifierService);
|
|
}
|
|
|
|
return gStorageNotifierService;
|
|
}
|
|
|
|
StorageNotifierService::StorageNotifierService() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(!gStorageNotifierService);
|
|
}
|
|
|
|
StorageNotifierService::~StorageNotifierService() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(!gStorageNotifierService);
|
|
gStorageShuttingDown = true;
|
|
}
|
|
|
|
/* static */
|
|
void StorageNotifierService::Broadcast(StorageEvent* aEvent,
|
|
const char16_t* aStorageType,
|
|
bool aPrivateBrowsing,
|
|
bool aImmediateDispatch) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
RefPtr<StorageNotifierService> service = gStorageNotifierService;
|
|
if (!service) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<StorageEvent> event = aEvent;
|
|
|
|
for (const auto& observer : service->mObservers.ForwardRange()) {
|
|
// Enforce that the source storage area's private browsing state matches
|
|
// this window's state. These flag checks and their maintenance independent
|
|
// from the principal's OriginAttributes matter because chrome docshells
|
|
// that are part of private browsing windows can be private browsing without
|
|
// having their OriginAttributes set (because they have the system
|
|
// principal).
|
|
if (aPrivateBrowsing != observer->IsPrivateBrowsing()) {
|
|
continue;
|
|
}
|
|
|
|
// No reasons to continue if the principal of the event doesn't match with
|
|
// the window's one.
|
|
if (!StorageUtils::PrincipalsEqual(
|
|
aEvent->GetPrincipal(), observer->GetEffectiveStoragePrincipal())) {
|
|
continue;
|
|
}
|
|
|
|
const auto pinnedObserver = observer;
|
|
|
|
RefPtr<Runnable> r = NS_NewRunnableFunction(
|
|
"StorageNotifierService::Broadcast",
|
|
[pinnedObserver, event, aStorageType, aPrivateBrowsing,
|
|
aImmediateDispatch]() {
|
|
// Check principals again. EffectiveStoragePrincipal may be changed
|
|
// when relaxed.
|
|
if (!aImmediateDispatch &&
|
|
!StorageUtils::PrincipalsEqual(
|
|
event->GetPrincipal(),
|
|
pinnedObserver->GetEffectiveStoragePrincipal())) {
|
|
return;
|
|
}
|
|
|
|
pinnedObserver->ObserveStorageNotification(event, aStorageType,
|
|
aPrivateBrowsing);
|
|
});
|
|
|
|
if (aImmediateDispatch) {
|
|
r->Run();
|
|
} else {
|
|
nsCOMPtr<nsIEventTarget> et = pinnedObserver->GetEventTarget();
|
|
if (et) {
|
|
et->Dispatch(r.forget());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void StorageNotifierService::Register(StorageNotificationObserver* aObserver) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(aObserver);
|
|
MOZ_ASSERT(!mObservers.Contains(aObserver));
|
|
|
|
mObservers.AppendElement(aObserver);
|
|
}
|
|
|
|
void StorageNotifierService::Unregister(
|
|
StorageNotificationObserver* aObserver) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(aObserver);
|
|
|
|
// No assertion about mObservers containing aObserver because window calls
|
|
// this method multiple times.
|
|
|
|
mObservers.RemoveElement(aObserver);
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|