security-and-privacy/CanvasBlocker
security-and-privacy/CanvasBlocker
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Refined property descriptor detection test.

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This commit is contained in:
kkapsner 2018-07-11 17:38:01 +02:00
parent 6d1c051323
commit 96118e5690
1 changed files with 54 additions and 34 deletions
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30
test/detectionTest.js
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@ -71,17 +71,35 @@ addTest("function name", function(){
addTest("property descriptor", function(log){ addTest("property descriptor", function(log){
"use strict"; "use strict";
var descriptor = Object.getOwnPropertyDescriptor(CanvasRenderingContext2D.prototype, "getImageData"); const properties = [
var desiredDescriptor = { {
object: CanvasRenderingContext2D.prototype,
name: "getImageData",
descriptor: {
value: function getImageData(x, y, w, h){}, value: function getImageData(x, y, w, h){},
writable: true, writable: true,
enumerable: true, enumerable: true,
configurable: true configurable: true
}; }
},
{
object: HTMLCanvasElement.prototype,
name: "toDataURL",
descriptor: {
value: function toDataURL(){},
writable: true,
enumerable: true,
configurable: true
}
},
];
return properties.reduce(function(pass, property){
const desiredDescriptor = property.descriptor;
const descriptor = Object.getOwnPropertyDescriptor(property.object, property.name);
return Object.keys(desiredDescriptor).reduce(function(pass, key){ return Object.keys(desiredDescriptor).reduce(function(pass, key){
function keyLog(type, expected, got){ function keyLog(type, expected, got){
log("wrong " + type + " for ", key, "- expected:", expected, "- got:", got); log(property.name + ": wrong " + type + " for ", key, "- expected:", expected, "- got:", got);
} }
var desiredValue = desiredDescriptor[key]; var desiredValue = desiredDescriptor[key];
var value = descriptor[key]; var value = descriptor[key];
@ -110,6 +128,7 @@ addTest("property descriptor", function(log){
keyLog("type", typeof desiredValue, typeof value); keyLog("type", typeof desiredValue, typeof value);
} }
return pass || keyPass; return pass || keyPass;
}, false) || pass;
}, false); }, false);
}); });
addTest("error provocation 1", function(log){ addTest("error provocation 1", function(log){
@ -191,7 +210,8 @@ addTest("error properties", function(log){
log("Error stack starts wrong. Expected:", start, "- got :", err.stack.split(/\n/g, 2)[0]); log("Error stack starts wrong. Expected:", start, "- got :", err.stack.split(/\n/g, 2)[0]);
canvasBlocker = true; canvasBlocker = true;
} }
var message = "'getImageData' called on an object that does not implement interface CanvasRenderingContext2D."; var message = "'getImageData' called on an object that " +
"does not implement interface CanvasRenderingContext2D.";
if (err.message !== message){ if (err.message !== message){
log("Error message wrong. Expected: ", message, "- got:", err.message); log("Error message wrong. Expected: ", message, "- got:", err.message);
canvasBlocker = true; canvasBlocker = true;