diff options
Diffstat (limited to 'toolkit/components/sessionstore/SessionStoreListener.cpp')
| -rw-r--r-- | toolkit/components/sessionstore/SessionStoreListener.cpp | 494 |
1 files changed, 494 insertions, 0 deletions
diff --git a/toolkit/components/sessionstore/SessionStoreListener.cpp b/toolkit/components/sessionstore/SessionStoreListener.cpp new file mode 100644 index 0000000000..19612af786 --- /dev/null +++ b/toolkit/components/sessionstore/SessionStoreListener.cpp @@ -0,0 +1,494 @@ +/* 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/PresShell.h" +#include "mozilla/dom/BrowserSessionStoreBinding.h" +#include "mozilla/dom/Document.h" +#include "mozilla/dom/SessionStoreListener.h" +#include "mozilla/dom/SessionStoreUtils.h" +#include "mozilla/dom/SessionStoreUtilsBinding.h" +#include "mozilla/dom/BrowserChild.h" +#include "mozilla/StaticPrefs_browser.h" +#include "nsGenericHTMLElement.h" +#include "nsDocShell.h" +#include "nsIAppWindow.h" +#include "nsIDocShell.h" +#include "nsIDocShellTreeOwner.h" +#include "nsImportModule.h" +#include "nsIPrefBranch.h" +#include "nsIPrefService.h" +#include "nsITimer.h" +#include "nsIWebProgress.h" +#include "nsIXPConnect.h" +#include "nsIXULRuntime.h" +#include "nsPresContext.h" +#include "nsPrintfCString.h" +#include "SessionStoreFunctions.h" + +using namespace mozilla; +using namespace mozilla::dom; + +// This pref controls whether or not we send updates to the parent on a timeout +// or not, and should only be used for tests or debugging. +static const char kTimeOutDisable[] = + "browser.sessionstore.debug.no_auto_updates"; +// Timeout for waiting an idle period to send data. +static const char kPrefInterval[] = "browser.sessionstore.interval"; + +NS_IMPL_CYCLE_COLLECTION(ContentSessionStore, mDocShell) + +ContentSessionStore::ContentSessionStore(nsIDocShell* aDocShell) + : mDocShell(aDocShell), + mPrivateChanged(false), + mIsPrivate(false), + mDocCapChanged(false), + mSHistoryChanged(false) { + MOZ_ASSERT(mDocShell); + // Check that value at startup as it might have + // been set before the frame script was loaded. + if (NS_SUCCEEDED(nsDocShell::Cast(mDocShell)->GetUsePrivateBrowsing( + &mPrivateChanged)) && + mPrivateChanged) { + mIsPrivate = true; + } +} + +nsCString ContentSessionStore::CollectDocShellCapabilities() { + bool allow; + nsCString aRetVal; + +#define TRY_ALLOWPROP(y) \ + PR_BEGIN_MACRO \ + nsresult rv = mDocShell->GetAllow##y(&allow); \ + if (NS_SUCCEEDED(rv) && !allow) { \ + if (!aRetVal.IsEmpty()) { \ + aRetVal.Append(','); \ + } \ + aRetVal.Append(#y); \ + } \ + PR_END_MACRO + + TRY_ALLOWPROP(Plugins); + // Bug 1328013 : Don't collect "AllowJavascript" property + // TRY_ALLOWPROP(Javascript); + TRY_ALLOWPROP(MetaRedirects); + TRY_ALLOWPROP(Subframes); + TRY_ALLOWPROP(Images); + TRY_ALLOWPROP(Media); + TRY_ALLOWPROP(DNSPrefetch); + TRY_ALLOWPROP(WindowControl); + TRY_ALLOWPROP(Auth); + TRY_ALLOWPROP(ContentRetargeting); + TRY_ALLOWPROP(ContentRetargetingOnChildren); +#undef TRY_ALLOWPROP + return aRetVal; +} + +void ContentSessionStore::OnPrivateModeChanged(bool aEnabled) { + mPrivateChanged = true; + mIsPrivate = aEnabled; +} + +nsCString ContentSessionStore::GetDocShellCaps() { + mDocCapChanged = false; + return mDocCaps; +} + +bool ContentSessionStore::GetPrivateModeEnabled() { + mPrivateChanged = false; + return mIsPrivate; +} + +void ContentSessionStore::SetSHistoryChanged() { + mSHistoryChanged = mozilla::SessionHistoryInParent(); +} + +void ContentSessionStore::OnDocumentStart() { + nsCString caps = CollectDocShellCapabilities(); + if (!mDocCaps.Equals(caps)) { + mDocCaps = caps; + mDocCapChanged = true; + } + + if (mozilla::SessionHistoryInParent()) { + mSHistoryChanged = true; + } +} + +void ContentSessionStore::OnDocumentEnd() { + if (mozilla::SessionHistoryInParent()) { + mSHistoryChanged = true; + } +} + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TabListener) + NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener) + NS_INTERFACE_MAP_ENTRY(nsIObserver) + NS_INTERFACE_MAP_ENTRY(nsIPrivacyTransitionObserver) + NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener) + NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference) + NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMEventListener) +NS_INTERFACE_MAP_END + +NS_IMPL_CYCLE_COLLECTION_WEAK(TabListener, mDocShell, mSessionStore, + mOwnerContent) +NS_IMPL_CYCLE_COLLECTING_ADDREF(TabListener) +NS_IMPL_CYCLE_COLLECTING_RELEASE(TabListener) + +TabListener::TabListener(nsIDocShell* aDocShell, Element* aElement) + : mDocShell(aDocShell), + mSessionStore(new ContentSessionStore(aDocShell)), + mOwnerContent(aElement), + mProgressListenerRegistered(false), + mEventListenerRegistered(false), + mPrefObserverRegistered(false), + mUpdatedTimer(nullptr), + mTimeoutDisabled(false), + mUpdateInterval(15000), + mEpoch(0) { + MOZ_ASSERT(mDocShell); +} + +EventTarget* TabListener::GetEventTarget() { + if (mOwnerContent) { + return mOwnerContent; + } + + nsCOMPtr<nsPIDOMWindowOuter> window = do_GetInterface(mDocShell); + if (window) { + return window->GetChromeEventHandler(); + } + + return nullptr; +} + +nsresult TabListener::Init() { + TabListener::UpdateSessionStore(); + nsresult rv = mDocShell->AddWeakPrivacyTransitionObserver(this); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsIWebProgress> webProgress = do_QueryInterface(mDocShell); + rv = webProgress->AddProgressListener(this, + nsIWebProgress::NOTIFY_STATE_DOCUMENT); + NS_ENSURE_SUCCESS(rv, rv); + mProgressListenerRegistered = true; + + nsCOMPtr<nsIPrefBranch> prefBranch = do_GetService(NS_PREFSERVICE_CONTRACTID); + NS_WARNING_ASSERTION(prefBranch, "no prefservice"); + if (prefBranch) { + prefBranch->AddObserver(kTimeOutDisable, this, true); + prefBranch->AddObserver(kPrefInterval, this, true); + mPrefObserverRegistered = true; + } + + AddEventListeners(); + return NS_OK; +} + +void TabListener::AddEventListeners() { + if (nsCOMPtr<EventTarget> eventTarget = GetEventTarget()) { + if (mozilla::SessionHistoryInParent()) { + eventTarget->AddSystemEventListener(u"DOMTitleChanged"_ns, this, false); + } + mEventListenerRegistered = true; + } +} + +void TabListener::RemoveEventListeners() { + if (nsCOMPtr<EventTarget> eventTarget = GetEventTarget()) { + if (mEventListenerRegistered) { + if (mozilla::SessionHistoryInParent()) { + eventTarget->RemoveSystemEventListener(u"DOMTitleChanged"_ns, this, + false); + } + mEventListenerRegistered = false; + } + } +} + +void TabListener::SetOwnerContent(Element* aElement) { + MOZ_DIAGNOSTIC_ASSERT(aElement); + RemoveEventListeners(); + mOwnerContent = aElement; + AddEventListeners(); +} + +/* static */ +void TabListener::TimerCallback(nsITimer* aTimer, void* aClosure) { + auto listener = static_cast<TabListener*>(aClosure); + listener->UpdateSessionStore(); + listener->StopTimerForUpdate(); +} + +void TabListener::StopTimerForUpdate() { + if (mUpdatedTimer) { + mUpdatedTimer->Cancel(); + mUpdatedTimer = nullptr; + } +} + +void TabListener::AddTimerForUpdate() { + if (mUpdatedTimer) { + return; + } + + if (mTimeoutDisabled) { + UpdateSessionStore(); + return; + } + + NS_NewTimerWithFuncCallback(getter_AddRefs(mUpdatedTimer), TimerCallback, + this, mUpdateInterval, nsITimer::TYPE_ONE_SHOT, + "TabListener::TimerCallback"); +} + +NS_IMETHODIMP TabListener::PrivateModeChanged(bool aEnabled) { + mSessionStore->OnPrivateModeChanged(aEnabled); + AddTimerForUpdate(); + return NS_OK; +} + +NS_IMETHODIMP TabListener::OnStateChange(nsIWebProgress* aWebProgress, + nsIRequest* aRequest, + uint32_t aStateFlags, + nsresult aStatus) { + if (!mSessionStore) { + return NS_OK; + } + + // Ignore state changes for subframes because we're only interested in the + // top-document starting or stopping its load. + bool isTopLevel = false; + nsresult rv = aWebProgress->GetIsTopLevel(&isTopLevel); + NS_ENSURE_SUCCESS(rv, rv); + if (!isTopLevel) { + return NS_OK; + } + + nsCOMPtr<nsIWebProgress> webProgress = do_QueryInterface(mDocShell); + if (webProgress != aWebProgress) { + return NS_OK; + } + + // onStateChange will be fired when loading the initial about:blank URI for + // a browser, which we don't actually care about. This is particularly for + // the case of unrestored background tabs, where the content has not yet + // been restored: we don't want to accidentally send any updates to the + // parent when the about:blank placeholder page has loaded. + if (!mDocShell->GetHasLoadedNonBlankURI()) { + return NS_OK; + } + + if (aStateFlags & (nsIWebProgressListener::STATE_START)) { + mSessionStore->OnDocumentStart(); + } else if (aStateFlags & (nsIWebProgressListener::STATE_STOP)) { + mSessionStore->OnDocumentEnd(); + } + + return NS_OK; +} + +NS_IMETHODIMP +TabListener::HandleEvent(Event* aEvent) { + EventTarget* target = aEvent->GetTarget(); + if (!target) { + return NS_OK; + } + + nsPIDOMWindowOuter* outer = target->GetOwnerGlobalForBindingsInternal(); + if (!outer || !outer->GetDocShell()) { + return NS_OK; + } + + RefPtr<BrowsingContext> context = outer->GetBrowsingContext(); + if (!context || context->CreatedDynamically()) { + return NS_OK; + } + + nsAutoString eventType; + aEvent->GetType(eventType); + if (eventType.EqualsLiteral("DOMTitleChanged")) { + mSessionStore->SetSHistoryChanged(); + AddTimerForUpdate(); + } + + return NS_OK; +} + +NS_IMETHODIMP TabListener::OnProgressChange(nsIWebProgress* aWebProgress, + nsIRequest* aRequest, + int32_t aCurSelfProgress, + int32_t aMaxSelfProgress, + int32_t aCurTotalProgress, + int32_t aMaxTotalProgress) { + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP TabListener::OnLocationChange(nsIWebProgress* aWebProgress, + nsIRequest* aRequest, + nsIURI* aLocation, + uint32_t aFlags) { + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP TabListener::OnStatusChange(nsIWebProgress* aWebProgress, + nsIRequest* aRequest, + nsresult aStatus, + const char16_t* aMessage) { + return NS_ERROR_NOT_IMPLEMENTED; +} +NS_IMETHODIMP TabListener::OnSecurityChange(nsIWebProgress* aWebProgress, + nsIRequest* aRequest, + uint32_t aState) { + return NS_ERROR_NOT_IMPLEMENTED; +} +NS_IMETHODIMP TabListener::OnContentBlockingEvent(nsIWebProgress* aWebProgress, + nsIRequest* aRequest, + uint32_t aEvent) { + return NS_ERROR_NOT_IMPLEMENTED; +} + +nsresult TabListener::Observe(nsISupports* aSubject, const char* aTopic, + const char16_t* aData) { + if (!strcmp(aTopic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID)) { + nsCOMPtr<nsIPrefBranch> prefBranch = do_QueryInterface(aSubject); + + bool timeoutDisabled; + if (NS_SUCCEEDED( + prefBranch->GetBoolPref(kTimeOutDisable, &timeoutDisabled))) { + if (mTimeoutDisabled != timeoutDisabled) { + mTimeoutDisabled = timeoutDisabled; + if (mUpdatedTimer) { + StopTimerForUpdate(); + AddTimerForUpdate(); + } + } + } + + int32_t interval = 0; + if (NS_SUCCEEDED(prefBranch->GetIntPref(kPrefInterval, &interval))) { + if (mUpdateInterval != interval) { + mUpdateInterval = interval; + if (mUpdatedTimer) { + StopTimerForUpdate(); + AddTimerForUpdate(); + } + } + } + return NS_OK; + } + + NS_ERROR("Unexpected topic"); + return NS_ERROR_UNEXPECTED; +} + +void TabListener::ForceFlushFromParent() { + if (!XRE_IsParentProcess()) { + return; + } + if (!mSessionStore) { + return; + } + + UpdateSessionStore(true); +} + +void TabListener::UpdateSessionStore(bool aIsFlush) { + if (!aIsFlush) { + if (!mSessionStore || !mSessionStore->UpdateNeeded()) { + return; + } + } + + if (!XRE_IsParentProcess()) { + BrowserChild* browserChild = BrowserChild::GetFrom(mDocShell); + if (browserChild) { + StopTimerForUpdate(); + browserChild->UpdateSessionStore(); + } + return; + } + + BrowsingContext* context = mDocShell->GetBrowsingContext(); + if (!context) { + return; + } + + uint32_t chromeFlags = 0; + nsCOMPtr<nsIDocShellTreeOwner> treeOwner; + mDocShell->GetTreeOwner(getter_AddRefs(treeOwner)); + if (!treeOwner) { + return; + } + nsCOMPtr<nsIAppWindow> window(do_GetInterface(treeOwner)); + if (!window) { + return; + } + if (window && NS_FAILED(window->GetChromeFlags(&chromeFlags))) { + return; + } + + UpdateSessionStoreData data; + if (mSessionStore->IsDocCapChanged()) { + data.mDisallow.Construct() = mSessionStore->GetDocShellCaps(); + } + if (mSessionStore->IsPrivateChanged()) { + data.mIsPrivate.Construct() = mSessionStore->GetPrivateModeEnabled(); + } + + nsCOMPtr<nsISessionStoreFunctions> funcs = do_ImportESModule( + "resource://gre/modules/SessionStoreFunctions.sys.mjs", fallible); + nsCOMPtr<nsIXPConnectWrappedJS> wrapped = do_QueryInterface(funcs); + if (!wrapped) { + return; + } + + AutoJSAPI jsapi; + if (!jsapi.Init(wrapped->GetJSObjectGlobal())) { + return; + } + + JS::Rooted<JS::Value> update(jsapi.cx()); + if (!ToJSValue(jsapi.cx(), data, &update)) { + return; + } + + JS::Rooted<JS::Value> key(jsapi.cx(), + context->Canonical()->Top()->PermanentKey()); + + nsresult rv = funcs->UpdateSessionStore( + mOwnerContent, context, key, mEpoch, + mSessionStore->GetAndClearSHistoryChanged(), update); + if (NS_FAILED(rv)) { + return; + } + + StopTimerForUpdate(); +} + +void TabListener::RemoveListeners() { + if (mProgressListenerRegistered) { + nsCOMPtr<nsIWebProgress> webProgress = do_QueryInterface(mDocShell); + if (webProgress) { + webProgress->RemoveProgressListener(this); + mProgressListenerRegistered = false; + } + } + + RemoveEventListeners(); + + if (mPrefObserverRegistered) { + nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService(); + if (!obs) { + return; + } + if (mPrefObserverRegistered) { + obs->RemoveObserver(this, kTimeOutDisable); + obs->RemoveObserver(this, kPrefInterval); + mPrefObserverRegistered = false; + } + } +} + +TabListener::~TabListener() { RemoveListeners(); } |