tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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file_bug346659.html (2126B)

      1 <script>
      2 function assert(cond, msg) {
      3  console.assert(cond, msg);
      4  if (!cond) {
      5    (window.opener || window.parent).postMessage({ type: 'error', msg }, '*');
      6    throw new Error(msg);
      7  }
      8 }
      9 
     10 function assert_if(when, cond, msg) {
     11  if (when) assert(cond, msg);
     12 }
     13 
     14 addEventListener("load", () => {
     15  const params = new URLSearchParams(location.search);
     16  const testId = params.get("testId");
     17  const type = params.get("type");
     18  const method = params.get("method") || 'load';
     19  const childHost = params.get("childHost") || location.host;
     20 
     21  assert(type == 'popup' || type == 'iframe', 'type must be popup or iframe');
     22  assert(method == 'write' || method == 'load', 'method must be write or load');
     23  assert(testId != null && !isNaN(testId), 'must provide testId');
     24  assert_if(method == 'write', !params.get("childHost"), 'childHost does not apply for method=write');
     25 
     26  let childURL = new URL(`bug346659-echoer.html?${testId}`, document.baseURI);
     27  childURL.host = childHost;
     28 
     29  if (method == 'write') {
     30    childURL = new URL('about:blank');
     31  }
     32 
     33  let childWindow;
     34  if (type == 'popup') {
     35    childWindow = window.open(childURL);
     36  } else if (type == 'iframe') {
     37    const iframe = document.createElement("iframe");
     38    iframe.src = childURL;
     39    document.body.append(iframe);
     40    childWindow = iframe.contentWindow;
     41  }
     42  childWindow.x = testId;
     43 
     44  if (method == 'write') {
     45    try {
     46      childWindow.document.write(`
     47        <script>
     48          const testNum = decodeURIComponent(window.location.search.substring(1));
     49          (window.opener || window.parent).postMessage("${testId} - " + window.x, "*");
     50          window.close();
     51        </scr`+`ipt>
     52      `)
     53    } catch (e) {
     54      if (e.name != "SecurityError" || e.code != 18) {
     55        assert(false, `Unknown error ${e.name}: ${e.message}`);
     56      }
     57      // Security error on cross-site write() is fine
     58      childWindow.close();
     59    }
     60  }
     61 })
     62 
     63 addEventListener("message", ({ data }) => {
     64  // forward further to test
     65  (window.opener || window.parent).postMessage(data, "*");
     66  // We expect to be done once we received a message
     67  window.close();
     68 })
     69 </script>