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Unified Diff: third_party/afl/src/experimental/canvas_harness/canvas_harness.html

Issue 2075883002: Add American Fuzzy Lop (afl) to third_party/afl/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Fix nits Created 4 years, 6 months ago
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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
new file mode 100644
index 0000000000000000000000000000000000000000..192936675ce1d3de74b3eb0ad4441f56cf3c57f0
--- /dev/null
+++ 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>

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