Index: third_party/afl/src/experimental/canvas_harness/canvas_harness.html |
diff --git a/third_party/afl/src/experimental/canvas_harness/canvas_harness.html b/third_party/afl/src/experimental/canvas_harness/canvas_harness.html |
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index 0000000000000000000000000000000000000000..192936675ce1d3de74b3eb0ad4441f56cf3c57f0 |
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+++ b/third_party/afl/src/experimental/canvas_harness/canvas_harness.html |
@@ -0,0 +1,170 @@ |
+<html> |
+<!-- |
+ |
+ american fuzzy lop - <canvas> harness |
+ ------------------------------------- |
+ |
+ Written and maintained by Michal Zalewski <lcamtuf@google.com> |
+ |
+ Copyright 2013, 2014 Google Inc. All rights reserved. |
+ |
+ Licensed under the Apache License, Version 2.0 (the "License"); |
+ you may not use this file except in compliance with the License. |
+ You may obtain a copy of the License at: |
+ |
+ http://www.apache.org/licenses/LICENSE-2.0 |
+ |
+ A simple harness for going through afl-generated test cases, rendering them in |
+ the browser environment, and discovering the use of uninitialized memory and |
+ similar bugs. This code led to the discovery of a fair number of library and |
+ browser security bugs! |
+ |
+ The url_list[] array is a placeholder; for this to work properly, it needs to |
+ be initialized with web-reachable paths to individual test cases. This can |
+ be done manually or with a simple script. |
+ |
+--> |
+ |
+<body onload="set_images()"> |
+ |
+<div id="status"></div> |
+ |
+<div id="image_div"></div> |
+ |
+<canvas height=64 width=64 id=cvs></canvas> |
+ |
+<h2>Results</h2> |
+ |
+<ul id="output"></ul> |
+ |
+<script> |
+ |
+var c = document.getElementById('cvs'); |
+var ctx = c.getContext('2d'); |
+ |
+var url_list = [ |
+ "images/id:000000,[...].jpg", |
+ "images/id:000001,[...].jpg", |
+ /* ... */ |
+ null |
+]; |
+ |
+var USE_IMAGES = 50; |
+var cur_image = 0; |
+ |
+if (location.hash) cur_image = parseInt(location.hash.substr(1)); |
+ |
+var loaded = 0; |
+var image_obj = []; |
+ |
+var msie_cleanup; |
+ |
+function check_results() { |
+ |
+ var uniques = []; |
+ |
+ clearTimeout(msie_cleanup); |
+ |
+ ctx.clearRect(0, 0, 64, 64); |
+ |
+ uniques.push(image_obj[0].imgdata); |
+ |
+ for (var i = 1; i < USE_IMAGES; i++) { |
+ |
+ if (!image_obj[i].imgdata) continue; |
+ |
+ if (image_obj[0].imgdata != image_obj[i].imgdata) { |
+ |
+ for (var j = 1; j < uniques.length; j++) |
+ if (uniques[j] == image_obj[i].imgdata) break; |
+ |
+ if (j == uniques.length) uniques.push(image_obj[i].imgdata); |
+ |
+ |
+ } |
+ |
+ } |
+ |
+ if (uniques.length > 1) { |
+ |
+ var str = '<li> Image ' + url_list[cur_image] + ' has ' + uniques.length + ' variants: '; |
+ |
+ for (var i = 0; i < uniques.length; i++) |
+ str += '<img src="' + uniques[i] + '">'; |
+ |
+ document.getElementById('output').innerHTML += str; |
+ |
+ } |
+ |
+ cur_image++; |
+ set_images(); |
+} |
+ |
+ |
+function count_image() { |
+ |
+ if (!this.complete || this.counted) return; |
+ |
+ this.counted = true; |
+ |
+ loaded++; |
+ |
+ ctx.clearRect(0, 0, 64, 64); |
+ |
+ try { |
+ ctx.drawImage(this, 0, 0, 64, 64); |
+ } catch (e) { } |
+ |
+ this.imgdata = c.toDataURL(); |
+ |
+ if (loaded == USE_IMAGES) check_results(); |
+} |
+ |
+ |
+function set_images() { |
+ |
+ loaded = 0; |
+ |
+ document.getElementById('status').innerHTML = 'Now processing ' + cur_image + '...'; |
+ location.hash = '#' + cur_image; |
+ |
+ if (url_list[cur_image] == null) { |
+ alert('Done!'); |
+ return; |
+ } |
+ |
+ restart_images(); |
+ |
+ msie_cleanup = setTimeout(check_results, 5000); |
+ |
+ for (var i = 0; i < USE_IMAGES; i++) |
+ image_obj[i].src = url_list[cur_image] + '?' + Math.random(); |
+ |
+} |
+ |
+ |
+function restart_images() { |
+ |
+ for (var i = 0; i < USE_IMAGES; i++) |
+ if (image_obj[i]) image_obj[i].counted = true; |
+ |
+ document.getElementById('image_div').innerHTML = ''; |
+ image_obj = []; |
+ |
+ for (var i = 0; i < USE_IMAGES; i++) { |
+ |
+ image_obj[i] = new Image(); |
+ image_obj[i].height = 64; |
+ image_obj[i].width = 64; |
+ image_obj[i].onerror = count_image; |
+ image_obj[i].onload = count_image; |
+ |
+ document.getElementById('image_div').appendChild(image_obj[i]); |
+ |
+ } |
+ |
+} |
+ |
+</script> |
+ |
+<iframe src='http://www.cnn.com/'></iframe> |