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Bug 965898 - Don't use a FilteringWrapper to get an unfiltered view in ChromeObjectWrapper. r=gabor

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This is necessary because subsequent patches cause us to assert when invoking
getPropertyDescriptor on a FilteringWrapper for which |Policy| denies both GET
and SET.

This stuff is really a mess. I'm looking forward to it going away.
This commit is contained in:
Bobby Holley 2014-07-30 12:23:02 -07:00
parent 7f37486434
commit 180ef58788
1 changed files with 7 additions and 5 deletions
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12
js/xpconnect/wrappers/ChromeObjectWrapper.cpp
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@ -9,6 +9,7 @@
#include "AccessCheck.h"
#include "xpcprivate.h"
#include "jsapi.h"
#include "jswrapper.h"
using namespace JS;
@ -49,9 +50,10 @@ PropIsFromStandardPrototype(JSContext *cx, JS::MutableHandle<JSPropertyDescripto
}
// Note that we're past the policy enforcement stage, here, so we can query
// ChromeObjectWrapperBase and get an unfiltered view of the underlying object.
// This lets us determine whether the property we would have found (given a
// transparent wrapper) would have come off a standard prototype.
// CrossCompartmentSecurityWrapper (our grand-parent wrapper) and get an
// unfiltered view of the underlying object. This lets us determine whether
// the property we would have found (given a transparent wrapper) would
// have come off a standard prototype.
static bool
PropIsFromStandardPrototype(JSContext *cx, HandleObject wrapper,
HandleId id)
@ -60,8 +62,8 @@ PropIsFromStandardPrototype(JSContext *cx, HandleObject wrapper,
&ChromeObjectWrapper::singleton);
Rooted<JSPropertyDescriptor> desc(cx);
const ChromeObjectWrapper *handler = &ChromeObjectWrapper::singleton;
if (!handler->ChromeObjectWrapperBase::getPropertyDescriptor(cx, wrapper, id,
&desc) ||
if (!handler->js::CrossCompartmentSecurityWrapper::getPropertyDescriptor(cx, wrapper, id,
&desc) ||
!desc.object())
{
return false;