Ejemplo n.º 1
0
NS_IMETHODIMP
nsJSCID::CreateInstance(HandleValue iidval, JSContext* cx,
                        uint8_t optionalArgc, MutableHandleValue retval)
{
    if (!mDetails->IsValid())
        return NS_ERROR_XPC_BAD_CID;

    if (NS_FAILED(nsXPConnect::SecurityManager()->CanCreateInstance(cx, mDetails->ID()))) {
        NS_ERROR("how are we not being called from chrome here?");
        return NS_OK;
    }

    // If an IID was passed in then use it
    const nsID* iid = GetIIDArg(optionalArgc, iidval, cx);
    if (!iid)
        return NS_ERROR_XPC_BAD_IID;

    nsCOMPtr<nsIComponentManager> compMgr;
    nsresult rv = NS_GetComponentManager(getter_AddRefs(compMgr));
    if (NS_FAILED(rv))
        return NS_ERROR_UNEXPECTED;

    nsCOMPtr<nsISupports> inst;
    rv = compMgr->CreateInstance(mDetails->ID(), nullptr, *iid, getter_AddRefs(inst));
    MOZ_ASSERT(NS_FAILED(rv) || inst, "component manager returned success, but instance is null!");

    if (NS_FAILED(rv) || !inst)
        return NS_ERROR_XPC_CI_RETURNED_FAILURE;

    rv = nsContentUtils::WrapNative(cx, inst, iid, retval);
    if (NS_FAILED(rv) || retval.isPrimitive())
        return NS_ERROR_XPC_CANT_CREATE_WN;
    return NS_OK;
}
Ejemplo n.º 2
0
// Call WaiveXrayAndWrap when you have a JS object that you don't want to be
// wrapped in an Xray wrapper. cx->compartment is the compartment that will be
// using the returned object. If the object to be wrapped is already in the
// correct compartment, then this returns the unwrapped object.
bool
WrapperFactory::WaiveXrayAndWrap(JSContext *cx, MutableHandleValue vp)
{
    if (vp.isPrimitive())
        return JS_WrapValue(cx, vp);

    RootedObject obj(cx, &vp.toObject());
    if (!WaiveXrayAndWrap(cx, &obj))
        return false;

    vp.setObject(*obj);
    return true;
}