<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> </head> <body> <script> "use strict"; /* globals privilegedFetch, privilegedXHR */ /* eslint-disable mozilla/balanced-listeners */ addEventListener("message", function rcv(event) { removeEventListener("message", rcv, false); function assertTrue(condition, description) { postMessage({msg: "assertTrue", condition, description}, "*"); } function passListener() { assertTrue(true, "Content XHR has no elevated privileges"); postMessage({"msg": "finish"}, "*"); } function failListener() { assertTrue(false, "Content XHR has no elevated privileges"); postMessage({"msg": "finish"}, "*"); } try { new privilegedXHR(); assertTrue(false, "Content should not have access to privileged XHR constructor"); } catch (e) { assertTrue(/Permission denied to access object/.test(e), "Content should not have access to privileged XHR constructor"); } try { new privilegedFetch(); assertTrue(false, "Content should not have access to privileged fetch() constructor"); } catch (e) { assertTrue(/Permission denied to access object/.test(e), "Content should not have access to privileged fetch() constructor"); } let req = new XMLHttpRequest(); req.addEventListener("load", failListener); req.addEventListener("error", passListener); req.open("GET", "http://example.org/example.txt"); req.send(); }, false); </script> </body> </html>