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[DOM] Only construct JS-implemented objects if inner window is current.

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This commit is contained in:
Kris Maglione 2020-08-28 07:05:07 +00:00 • committed by Roy Tam
commit f0f7b56d77
1 changed files with 6 additions and 1 deletions
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7
dom/bindings/BindingUtils.cpp
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@ -2516,6 +2516,12 @@ ConstructJSImplementation(const char* aContractId,
{
AutoNoJSAPI nojsapi;
nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aGlobal);
if (!window->IsCurrentInnerWindow()) {
aRv.Throw(NS_ERROR_FAILURE);
return;
}
// Get the XPCOM component containing the JS implementation.
nsresult rv;
nsCOMPtr<nsISupports> implISupports = do_CreateInstance(aContractId, &rv);
@ -2530,7 +2536,6 @@ ConstructJSImplementation(const char* aContractId,
// and our global is a window.
nsCOMPtr<nsIDOMGlobalPropertyInitializer> gpi =
do_QueryInterface(implISupports);
nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aGlobal);
if (gpi) {
JS::Rooted<JS::Value> initReturn(RootingCx());
rv = gpi->Init(window, &initReturn);