tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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file_redirect.sjs (1818B)


      1 //https://bugzilla.mozilla.org/show_bug.cgi?id=1706351
      2 
      3 // Step 1. Send request with redirect queryString (eg. file_redirect.sjs?302)
      4 // Step 2. Server responds with corresponding redirect code to http://example.com/../file_redirect.sjs?check
      5 // Step 3. Response from ?check indicates whether the redirected request was secure or not.
      6 
      7 const RESPONSE_ERROR = "unexpected-query";
      8 
      9 // An onload postmessage to window opener
     10 const RESPONSE_SECURE = `
     11   <html>
     12   <body>
     13   send onload message...
     14   <script type="application/javascript">
     15     window.opener.postMessage({result: 'secure'}, '*');
     16   </script>
     17   </body>
     18   </html>`;
     19 
     20 const RESPONSE_INSECURE = `
     21   <html>
     22   <body>
     23   send onload message...
     24   <script type="application/javascript">
     25     window.opener.postMessage({result: 'insecure'}, '*');
     26   </script>
     27   </body>
     28   </html>`;
     29 
     30 function handleRequest(request, response) {
     31   response.setHeader("Cache-Control", "no-cache", false);
     32 
     33   const query = request.queryString;
     34 
     35   // Send redirect header
     36   if ((query >= 301 && query <= 303) || query == 307) {
     37     // needs to be a cross site redirect to http://example.com otherwise
     38     // our upgrade downgrade endless loop break mechanism kicks in
     39     const loc =
     40       "http://test1.example.com/tests/dom/security/test/https-first/file_redirect.sjs?check";
     41     response.setStatusLine(request.httpVersion, query, "Found");
     42     response.setHeader("Location", loc, false);
     43     return;
     44   }
     45 
     46   // Check if scheme is http:// or https://
     47   if (query == "check") {
     48     const secure =
     49       request.scheme == "https" ? RESPONSE_SECURE : RESPONSE_INSECURE;
     50     response.setStatusLine(request.httpVersion, 200, "OK");
     51     response.write(secure);
     52     return;
     53   }
     54 
     55   // This should not happen
     56   response.setStatusLine(request.httpVersion, 500, "OK");
     57   response.write(RESPONSE_ERROR);
     58 }