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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/SessionStoreChild.h"
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/Assertions.h"
#include "mozilla/RefPtr.h"
#include "mozilla/ScopeExit.h"
#include "mozilla/dom/BrowserChild.h"
#include "mozilla/dom/BrowsingContext.h"
#include "mozilla/dom/InProcessChild.h"
#include "mozilla/dom/InProcessParent.h"
#include "mozilla/dom/BrowserSessionStore.h"
#include "mozilla/dom/SessionStoreChangeListener.h"
#include "mozilla/dom/SessionStoreParent.h"
#include "mozilla/dom/WindowGlobalParent.h"
#include "mozilla/ipc/Endpoint.h"
#include "nsCOMPtr.h"
#include "nsFrameLoader.h"
using namespace mozilla;
using namespace mozilla::dom;
class nsIDocShell;
static already_AddRefed<TabListener> CreateTabListener(nsIDocShell* aDocShell) {
RefPtr<TabListener> tabListener =
mozilla::MakeRefPtr<TabListener>(aDocShell, nullptr);
nsresult rv = tabListener->Init();
if (NS_FAILED(rv)) {
return nullptr;
}
return tabListener.forget();
}
already_AddRefed<SessionStoreChild> SessionStoreChild::GetOrCreate(
BrowsingContext* aBrowsingContext, Element* aOwnerElement) {
RefPtr<TabListener> tabListener =
CreateTabListener(aBrowsingContext->GetDocShell());
if (!tabListener) {
return nullptr;
}
RefPtr<SessionStoreChangeListener> sessionStoreChangeListener =
SessionStoreChangeListener::Create(aBrowsingContext);
if (!sessionStoreChangeListener) {
return nullptr;
}
RefPtr<SessionStoreChild> sessionStoreChild =
new SessionStoreChild(tabListener, sessionStoreChangeListener);
sessionStoreChangeListener->SetActor(sessionStoreChild);
if (XRE_IsParentProcess()) {
MOZ_DIAGNOSTIC_ASSERT(aOwnerElement);
InProcessChild* inProcessChild = InProcessChild::Singleton();
InProcessParent* inProcessParent = InProcessParent::Singleton();
if (!inProcessChild || !inProcessParent) {
return nullptr;
}
RefPtr<BrowserSessionStore> sessionStore =
BrowserSessionStore::GetOrCreate(aBrowsingContext->Canonical()->Top());
if (!sessionStore) {
return nullptr;
}
CanonicalBrowsingContext* browsingContext = aBrowsingContext->Canonical();
RefPtr<SessionStoreParent> sessionStoreParent =
new SessionStoreParent(browsingContext, sessionStore);
ManagedEndpoint<PSessionStoreParent> endpoint =
inProcessChild->OpenPSessionStoreEndpoint(sessionStoreChild);
inProcessParent->BindPSessionStoreEndpoint(std::move(endpoint),
sessionStoreParent);
} else {
MOZ_DIAGNOSTIC_ASSERT(!aOwnerElement);
RefPtr<BrowserChild> browserChild =
BrowserChild::GetFrom(aBrowsingContext->GetDOMWindow());
MOZ_DIAGNOSTIC_ASSERT(browserChild);
MOZ_DIAGNOSTIC_ASSERT(aBrowsingContext->IsInProcess());
sessionStoreChild = static_cast<SessionStoreChild*>(
browserChild->SendPSessionStoreConstructor(sessionStoreChild));
}
return sessionStoreChild.forget();
}
/* static */
SessionStoreChild* SessionStoreChild::From(WindowGlobalChild* aWindowChild) {
if (!aWindowChild) {
return nullptr;
}
// If `aWindowChild` is inprocess
if (RefPtr<BrowserChild> browserChild = aWindowChild->GetBrowserChild()) {
return browserChild->GetSessionStoreChild();
}
if (XRE_IsContentProcess()) {
return nullptr;
}
WindowGlobalParent* windowParent = aWindowChild->WindowContext()->Canonical();
if (!windowParent) {
return nullptr;
}
RefPtr<nsFrameLoader> frameLoader = windowParent->GetRootFrameLoader();
if (!frameLoader) {
return nullptr;
}
return frameLoader->GetSessionStoreChild();
}
SessionStoreChild::SessionStoreChild(
TabListener* aSessionStoreListener,
SessionStoreChangeListener* aSessionStoreChangeListener)
: mSessionStoreListener(aSessionStoreListener),
mSessionStoreChangeListener(aSessionStoreChangeListener) {}
void SessionStoreChild::SetEpoch(uint32_t aEpoch) {
if (mSessionStoreListener) {
mSessionStoreListener->SetEpoch(aEpoch);
}
if (mSessionStoreChangeListener) {
mSessionStoreChangeListener->SetEpoch(aEpoch);
}
}
void SessionStoreChild::SetOwnerContent(Element* aElement) {
if (mSessionStoreChangeListener) {
mSessionStoreChangeListener->FlushSessionStore();
}
if (!aElement) {
return;
}
if (mSessionStoreListener) {
mSessionStoreListener->SetOwnerContent(aElement);
}
}
void SessionStoreChild::Stop() {
if (mSessionStoreListener) {
mSessionStoreListener->RemoveListeners();
mSessionStoreListener = nullptr;
}
if (mSessionStoreChangeListener) {
mSessionStoreChangeListener->Stop();
}
}
void SessionStoreChild::UpdateEventTargets() {
if (mSessionStoreChangeListener) {
mSessionStoreChangeListener->UpdateEventTargets();
}
}
void SessionStoreChild::UpdateSessionStore(bool aSessionHistoryUpdate,
const MaybeSessionStoreZoom& aZoom) {
if (!mSessionStoreListener) {
// This is the case when we're shutting down, and expect a final update.
SessionStoreUpdate(Nothing(), Nothing(), Nothing(), aSessionHistoryUpdate,
0);
return;
}
RefPtr<ContentSessionStore> store = mSessionStoreListener->GetSessionStore();
Maybe<nsCString> docShellCaps;
if (store->IsDocCapChanged()) {
docShellCaps.emplace(store->GetDocShellCaps());
}
Maybe<bool> privatedMode;
if (store->IsPrivateChanged()) {
privatedMode.emplace(store->GetPrivateModeEnabled());
}
SessionStoreUpdate(
docShellCaps, privatedMode, aZoom,
store->GetAndClearSHistoryChanged() || aSessionHistoryUpdate,
mSessionStoreListener->GetEpoch());
}
void SessionStoreChild::FlushSessionStore() {
if (mSessionStoreChangeListener) {
mSessionStoreChangeListener->FlushSessionStore();
}
}
void SessionStoreChild::UpdateSHistoryChanges() {
if (mSessionStoreListener) {
mSessionStoreListener->UpdateSHistoryChanges();
}
}
mozilla::ipc::IPCResult SessionStoreChild::RecvFlushTabState(
FlushTabStateResolver&& aResolver) {
if (mSessionStoreChangeListener) {
mSessionStoreChangeListener->FlushSessionStore();
}
aResolver(true);
return IPC_OK();
}
void SessionStoreChild::SessionStoreUpdate(
const Maybe<nsCString>& aDocShellCaps, const Maybe<bool>& aPrivatedMode,
const MaybeSessionStoreZoom& aZoom, const bool aNeedCollectSHistory,
const uint32_t& aEpoch) {
// Skipping an update here is acceptable, since it will only happen
// during actor teardown, and we're most likely in a final flush
// which expects that not all content processes manage to respond.
if (XRE_IsContentProcess() && CanSend()) {
Unused << SendSessionStoreUpdate(aDocShellCaps, aPrivatedMode, aZoom,
aNeedCollectSHistory, aEpoch);
} else if (SessionStoreParent* sessionStoreParent =
static_cast<SessionStoreParent*>(
InProcessChild::ParentActorFor(this))) {
sessionStoreParent->SessionStoreUpdate(aDocShellCaps, aPrivatedMode, aZoom,
aNeedCollectSHistory, aEpoch);
}
}
void SessionStoreChild::IncrementalSessionStoreUpdate(
const MaybeDiscarded<BrowsingContext>& aBrowsingContext,
const Maybe<FormData>& aFormData, const Maybe<nsPoint>& aScrollPosition,
uint32_t aEpoch) {
// Skipping an update here is acceptable, since it will only happen
// during actor teardown, and we're most likely in a final flush
// which expects that not all content processes manage to respond.
if (XRE_IsContentProcess() && CanSend()) {
Unused << SendIncrementalSessionStoreUpdate(aBrowsingContext, aFormData,
aScrollPosition, aEpoch);
} else if (SessionStoreParent* sessionStoreParent =
static_cast<SessionStoreParent*>(
InProcessChild::ParentActorFor(this))) {
sessionStoreParent->IncrementalSessionStoreUpdate(
aBrowsingContext, aFormData, aScrollPosition, aEpoch);
}
}
void SessionStoreChild::ResetSessionStore(
const MaybeDiscarded<BrowsingContext>& aBrowsingContext, uint32_t aEpoch) {
if (XRE_IsContentProcess()) {
Unused << SendResetSessionStore(aBrowsingContext, aEpoch);
} else if (SessionStoreParent* sessionStoreParent =
static_cast<SessionStoreParent*>(
InProcessChild::ParentActorFor(this))) {
sessionStoreParent->ResetSessionStore(aBrowsingContext, aEpoch);
}
}
NS_IMPL_CYCLE_COLLECTION(SessionStoreChild, mSessionStoreListener,
mSessionStoreChangeListener)
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