forked from mirrors/gecko-dev
d296624690
Backed out changeset 28bedb658af4 (bug 1340498) Backed out changeset f950a2310e26 (bug 1340498) Backed out changeset 5fcd31c65fe0 (bug 1340498) Backed out changeset 515bb5e24dd7 (bug 1340498) Backed out changeset 79a8619bd3e2 (bug 1340498)
139 lines
4.6 KiB
C++
139 lines
4.6 KiB
C++
#include "WindowDestroyedEvent.h"
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#include "nsJSUtils.h"
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#include "jsapi.h" // for JSAutoRequest
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#include "js/Wrapper.h"
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#include "nsIPrincipal.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIAppStartup.h"
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#include "nsToolkitCompsCID.h"
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#include "nsCOMPtr.h"
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#include "nsContentUtils.h"
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namespace mozilla {
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// Try to match compartments that are not web content by matching compartments
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// with principals that are either the system principal or an expanded principal.
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// This may not return true for all non-web-content compartments.
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struct BrowserCompartmentMatcher : public js::CompartmentFilter {
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bool match(JS::Compartment* aC) const override
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{
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nsCOMPtr<nsIPrincipal> pc = nsJSPrincipals::get(JS_GetCompartmentPrincipals(aC));
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return nsContentUtils::IsSystemOrExpandedPrincipal(pc);
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}
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};
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WindowDestroyedEvent::WindowDestroyedEvent(nsGlobalWindowInner* aWindow,
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uint64_t aID, const char* aTopic)
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: mozilla::Runnable("WindowDestroyedEvent")
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, mID(aID)
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, mPhase(Phase::Destroying)
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, mTopic(aTopic)
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, mIsInnerWindow(true)
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{
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mWindow = do_GetWeakReference(aWindow);
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}
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WindowDestroyedEvent::WindowDestroyedEvent(nsGlobalWindowOuter* aWindow,
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uint64_t aID, const char* aTopic)
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: mozilla::Runnable("WindowDestroyedEvent")
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, mID(aID)
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, mPhase(Phase::Destroying)
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, mTopic(aTopic)
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, mIsInnerWindow(false)
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{
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mWindow = do_GetWeakReference(aWindow);
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}
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NS_IMETHODIMP
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WindowDestroyedEvent::Run()
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{
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AUTO_PROFILER_LABEL("WindowDestroyedEvent::Run", OTHER);
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nsCOMPtr<nsIObserverService> observerService =
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services::GetObserverService();
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if (!observerService) {
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return NS_OK;
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}
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nsCOMPtr<nsISupportsPRUint64> wrapper =
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do_CreateInstance(NS_SUPPORTS_PRUINT64_CONTRACTID);
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if (wrapper) {
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wrapper->SetData(mID);
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observerService->NotifyObservers(wrapper, mTopic.get(), nullptr);
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}
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switch (mPhase) {
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case Phase::Destroying:
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{
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bool skipNukeCrossCompartment = false;
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#ifndef DEBUG
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nsCOMPtr<nsIAppStartup> appStartup =
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do_GetService(NS_APPSTARTUP_CONTRACTID);
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if (appStartup) {
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appStartup->GetShuttingDown(&skipNukeCrossCompartment);
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}
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#endif
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if (!skipNukeCrossCompartment) {
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// The compartment nuking phase might be too expensive, so do that
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// part off of idle dispatch.
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// For the compartment nuking phase, we dispatch either an
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// inner-window-nuked or an outer-window-nuked notification.
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// This will allow tests to wait for compartment nuking to happen.
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if (mTopic.EqualsLiteral("inner-window-destroyed")) {
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mTopic.AssignLiteral("inner-window-nuked");
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} else if (mTopic.EqualsLiteral("outer-window-destroyed")) {
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mTopic.AssignLiteral("outer-window-nuked");
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}
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mPhase = Phase::Nuking;
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nsCOMPtr<nsIRunnable> copy(this);
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NS_IdleDispatchToCurrentThread(copy.forget(), 1000);
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}
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}
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break;
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case Phase::Nuking:
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{
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nsCOMPtr<nsISupports> window = do_QueryReferent(mWindow);
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if (window) {
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nsGlobalWindowInner* currentInner;
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if (mIsInnerWindow) {
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currentInner = nsGlobalWindowInner::FromSupports(window);
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} else {
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nsGlobalWindowOuter* outer = nsGlobalWindowOuter::FromSupports(window);
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currentInner = outer->GetCurrentInnerWindowInternal();
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}
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NS_ENSURE_TRUE(currentInner, NS_OK);
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AutoSafeJSContext cx;
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JS::Rooted<JSObject*> obj(cx, currentInner->FastGetGlobalJSObject());
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if (obj && !js::IsSystemRealm(js::GetNonCCWObjectRealm(obj))) {
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JS::Compartment* cpt = js::GetObjectCompartment(obj);
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nsCOMPtr<nsIPrincipal> pc = nsJSPrincipals::get(JS_GetCompartmentPrincipals(cpt));
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if (BasePrincipal::Cast(pc)->AddonPolicy()) {
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// We want to nuke all references to the add-on compartment.
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xpc::NukeAllWrappersForCompartment(cx, cpt,
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mIsInnerWindow ? js::DontNukeWindowReferences
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: js::NukeWindowReferences);
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} else {
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// We only want to nuke wrappers for the chrome->content case
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js::NukeCrossCompartmentWrappers(cx, BrowserCompartmentMatcher(), cpt,
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mIsInnerWindow ? js::DontNukeWindowReferences
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: js::NukeWindowReferences,
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js::NukeIncomingReferences);
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}
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}
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}
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}
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break;
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}
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return NS_OK;
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}
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} // namespace mozilla
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