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[tor-commits] [tor-browser/tor-browser-52.1.0esr-7.0-2] Bug 10286: Regression tests for Touch API fingerprinting resistance



commit 00d2bfb5067659c352690c06cb85a8b76bc7addb
Author: Arthur Edelstein <arthuredelstein@xxxxxxxxx>
Date:   Wed Apr 26 08:57:21 2017 -0700

    Bug 10286: Regression tests for Touch API fingerprinting resistance
    
    Also, fix typo in EventUtils.js
---
 dom/events/test/mochitest.ini                      |  1 +
 .../test_touchevent_resist_fingerprinting.html     | 68 ++++++++++++++++++++++
 testing/mochitest/tests/SimpleTest/EventUtils.js   |  2 +-
 3 files changed, 70 insertions(+), 1 deletion(-)

diff --git a/dom/events/test/mochitest.ini b/dom/events/test/mochitest.ini
index 4322a7b..92e68f3 100644
--- a/dom/events/test/mochitest.ini
+++ b/dom/events/test/mochitest.ini
@@ -185,3 +185,4 @@ skip-if = toolkit == 'android' #CRASH_DUMP, RANDOM
 [test_wheel_default_action.html]
 [test_bug687787.html]
 [test_bug1298970.html]
+[test_touchevent_resist_fingerprinting.html]
diff --git a/dom/events/test/test_touchevent_resist_fingerprinting.html b/dom/events/test/test_touchevent_resist_fingerprinting.html
new file mode 100644
index 0000000..8ba7925
--- /dev/null
+++ b/dom/events/test/test_touchevent_resist_fingerprinting.html
@@ -0,0 +1,68 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://trac.torproject.org/10286
+-->
+  <head>
+    <meta charset="utf-8">
+    <title>Test for Tor Bug 10286</title>
+    <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+    <script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
+    <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  </head>
+  <body>
+    <div id="target0">target0</div>
+    <script type="application/javascript">
+     SimpleTest.waitForExplicitFinish();
+
+     let promiseEvent = (target, eventName) => {
+       return new Promise(resolve => {
+         target.addEventListener(eventName, function eventOccurred(event) {
+           target.removeEventListener(eventName, eventOccurred, false);
+           resolve(event);
+         }, false);
+       });
+     }
+
+     let promiseTouchEvent = (target, type, offsetX, offsetY, params) => {
+       let touchEventPromise = promiseEvent(target, type);
+       params.type = type;
+       synthesizeTouch(target, offsetX, offsetY, params);
+       return touchEventPromise;
+     };
+
+     let target0 = document.getElementById("target0");
+     let touchParams = { force: 1.0, angle: 1.0, rx: 2, ry: 3 };
+
+     let runTest = async () => {
+       await SpecialPowers.pushPrefEnv(
+         { set: [["dom.w3c_touch_events.enabled", 1]] });
+       for (let resist of [false, true]) {
+         await SpecialPowers.pushPrefEnv(
+           { set: [["privacy.resistFingerprinting", resist]] });
+         info("starting test with fingerprinting resistance " +
+              (resist ? "on" : "off"));
+         let touchEvent = await promiseTouchEvent(target0, "touchstart",
+                                                  5, 5, touchParams);
+         info("touch event received");
+         let touch = touchEvent.touches[0];
+         if (resist) {
+           is(touch.screenX, touch.clientX,
+              "touch.screenX should be the same as touch.clientX");
+           is(touch.screenY, touch.clientY,
+              "touch.screenY should be the same as touch.clientY");
+         }
+         is(touch.force, resist ? 0.0 : touchParams.force, "touch.force");
+         is(touch.radiusX, resist ? 1 : touchParams.rx, "touch.radiusX");
+         is(touch.radiusY, resist ? 1 : touchParams.ry, "touch.radiusY");
+         is(touch.rotationAngle, resist ? 0 : touchParams.angle,
+            "touch.rotationAngle");
+       }
+     }
+
+     window.onload = () => {
+       runTest().then(() => SimpleTest.finish());
+     };
+    </script>
+  </body>
+</html>
diff --git a/testing/mochitest/tests/SimpleTest/EventUtils.js b/testing/mochitest/tests/SimpleTest/EventUtils.js
index a0df2d5..c36a480 100644
--- a/testing/mochitest/tests/SimpleTest/EventUtils.js
+++ b/testing/mochitest/tests/SimpleTest/EventUtils.js
@@ -395,7 +395,7 @@ function synthesizeTouchAtPoint(left, top, aEvent, aWindow = window)
   if (utils) {
     var id = aEvent.id || 0;
     var rx = aEvent.rx || 1;
-    var ry = aEvent.rx || 1;
+    var ry = aEvent.ry || 1;
     var angle = aEvent.angle || 0;
     var force = aEvent.force || 1;
     var modifiers = _parseModifiers(aEvent, aWindow);

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