The Tor Browser: image/test/mochitest/bug767779.sjs@ac0c01689b40

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /* Any copyright is dedicated to the Public Domain.

     2  * http://creativecommons.org/publicdomain/zero/1.0/

     3  */

     5 var timer = Components.classes["@mozilla.org/timer;1"];

     6 var partTimer = timer.createInstance(Components.interfaces.nsITimer);

     8 function getFileAsInputStream(aFilename) {

     9   var file = Components.classes["@mozilla.org/file/directory_service;1"]

    10              .getService(Components.interfaces.nsIProperties)

    11              .get("CurWorkD", Components.interfaces.nsIFile);

    13   file.append("tests");

    14   file.append("image");

    15   file.append("test");

    16   file.append("mochitest");

    17   file.append(aFilename);

    19   var fileStream = Components.classes['@mozilla.org/network/file-input-stream;1']

    20                    .createInstance(Components.interfaces.nsIFileInputStream);

    21   fileStream.init(file, 1, 0, false);

    22   return fileStream;

    23 }

    25 function handleRequest(request, response)

    26 {

    27   response.setHeader("Content-Type", "image/gif", false);

    28   response.setHeader("Cache-Control", "no-cache", false);

    29   response.setStatusLine(request.httpVersion, 200, "OK");

    30   // We're sending data off in a delayed fashion

    31   response.processAsync();

    32   var inputStream = getFileAsInputStream("animated-gif_trailing-garbage.gif");

    33   var available = inputStream.available(); // = 4029 bytes

    34   // Send the good data at once

    35   response.bodyOutputStream.writeFrom(inputStream, 285);

    36   sendParts(inputStream, response);

    37 }

    39 function sendParts(inputStream, response) {

    40   // 3744 left, send in 8 chunks of 468 each

    41   partTimer.initWithCallback(getSendNextPart(inputStream, response), 500,

    42                              Components.interfaces.nsITimer.TYPE_ONE_SHOT);

    43 }

    45 function getSendNextPart(inputStream, response) {

    46   return function () {

    47     response.bodyOutputStream.writeFrom(inputStream, 468);

    48     if (!inputStream.available()) {

    49       inputStream.close();

    50       response.finish();

    51     } else {

    52       sendParts(inputStream, response);

    53     }

    54   };

    55 }

The Tor Browser / file revision

image/test/mochitest/bug767779.sjs@ac0c01689b40

image/test/mochitest/bug767779.sjs