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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/WebAuthnManagerBase.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/WebAuthnTransactionChild.h"
#include "mozilla/ipc/BackgroundChild.h"
#include "mozilla/ipc/PBackgroundChild.h"
#include "mozilla/dom/Event.h"
#include "nsGlobalWindowInner.h"
#include "nsPIWindowRoot.h"
namespace mozilla::dom {
constexpr auto kDeactivateEvent = u"deactivate"_ns;
constexpr auto kVisibilityChange = u"visibilitychange"_ns;
WebAuthnManagerBase::WebAuthnManagerBase(nsPIDOMWindowInner* aParent)
: mParent(aParent) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aParent);
}
WebAuthnManagerBase::~WebAuthnManagerBase() { MOZ_ASSERT(NS_IsMainThread()); }
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(WebAuthnManagerBase)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTION(WebAuthnManagerBase, mParent)
NS_IMPL_CYCLE_COLLECTING_ADDREF(WebAuthnManagerBase)
NS_IMPL_CYCLE_COLLECTING_RELEASE(WebAuthnManagerBase)
/***********************************************************************
* IPC Protocol Implementation
**********************************************************************/
bool WebAuthnManagerBase::MaybeCreateBackgroundActor() {
MOZ_ASSERT(NS_IsMainThread());
if (mChild) {
return true;
}
::mozilla::ipc::PBackgroundChild* actorChild =
::mozilla::ipc::BackgroundChild::GetOrCreateForCurrentThread();
if (NS_WARN_IF(!actorChild)) {
return false;
}
RefPtr<WebAuthnTransactionChild> mgr(new WebAuthnTransactionChild(this));
PWebAuthnTransactionChild* constructedMgr =
actorChild->SendPWebAuthnTransactionConstructor(mgr);
if (NS_WARN_IF(!constructedMgr)) {
return false;
}
MOZ_ASSERT(constructedMgr == mgr);
mChild = std::move(mgr);
return true;
}
void WebAuthnManagerBase::ActorDestroyed() {
MOZ_ASSERT(NS_IsMainThread());
mChild = nullptr;
}
/***********************************************************************
* Event Handling
**********************************************************************/
void WebAuthnManagerBase::ListenForVisibilityEvents() {
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsPIDOMWindowOuter> outer = mParent->GetOuterWindow();
if (NS_WARN_IF(!outer)) {
return;
}
nsCOMPtr<EventTarget> windowRoot = outer->GetTopWindowRoot();
if (NS_WARN_IF(!windowRoot)) {
return;
}
nsresult rv = windowRoot->AddEventListener(kDeactivateEvent, this,
/* use capture */ true,
/* wants untrusted */ false);
Unused << NS_WARN_IF(NS_FAILED(rv));
rv = windowRoot->AddEventListener(kVisibilityChange, this,
/* use capture */ true,
/* wants untrusted */ false);
Unused << NS_WARN_IF(NS_FAILED(rv));
}
void WebAuthnManagerBase::StopListeningForVisibilityEvents() {
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsPIDOMWindowOuter> outer = mParent->GetOuterWindow();
if (NS_WARN_IF(!outer)) {
return;
}
nsCOMPtr<EventTarget> windowRoot = outer->GetTopWindowRoot();
if (NS_WARN_IF(!windowRoot)) {
return;
}
windowRoot->RemoveEventListener(kDeactivateEvent, this,
/* use capture */ true);
windowRoot->RemoveEventListener(kVisibilityChange, this,
/* use capture */ true);
}
NS_IMETHODIMP
WebAuthnManagerBase::HandleEvent(Event* aEvent) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aEvent);
nsAutoString type;
aEvent->GetType(type);
if (!type.Equals(kDeactivateEvent) && !type.Equals(kVisibilityChange)) {
return NS_ERROR_FAILURE;
}
// The "deactivate" event on the root window has no
// "current inner window" and thus GetTarget() is always null.
if (type.Equals(kVisibilityChange)) {
nsCOMPtr<Document> doc = do_QueryInterface(aEvent->GetTarget());
if (NS_WARN_IF(!doc) || !doc->Hidden()) {
return NS_OK;
}
nsGlobalWindowInner* win = nsGlobalWindowInner::Cast(doc->GetInnerWindow());
if (NS_WARN_IF(!win) || !win->IsTopInnerWindow()) {
return NS_OK;
}
}
HandleVisibilityChange();
return NS_OK;
}
} // namespace mozilla::dom
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