security-and-privacy/CanvasBlocker
security-and-privacy/CanvasBlocker
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Added meta information detection tests.

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This commit is contained in:
kkapsner 2018-07-09 18:49:16 +02:00
parent 07c5585f5a
commit b776c256a6
1 changed files with 75 additions and 0 deletions
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75
test/detectionTest.js
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@ -68,6 +68,50 @@ addTest("function name", function(){
return CanvasRenderingContext2D.prototype.getImageData.name !== "getImageData";
});
addTest("property descriptor", function(log){
"use strict";
var descriptor = Object.getOwnPropertyDescriptor(CanvasRenderingContext2D.prototype, "getImageData");
var desiredDescriptor = {
value: function getImageData(x, y, w, h){},
writable: true,
enumerable: true,
configurable: true
};
return Object.keys(desiredDescriptor).reduce(function(pass, key){
function keyLog(type, expected, got){
log("wrong " + type + " for ", key, "- expected:", expected, "- got:", got);
}
var desiredValue = desiredDescriptor[key];
var value = descriptor[key];
var keyPass = false;
if ((typeof desiredValue) === (typeof value)){
if ((typeof desiredValue) === "function"){
if (value.name !== desiredValue.name){
keyPass = true;
keyLog("function name", desiredValue.name, value.name);
}
if (value.length !== desiredValue.length){
keyPass = true;
keyLog("function length", desiredValue.length, value.length);
}
}
else {
if (desiredValue !== value){
keyPass = true;
keyLog("value", desiredValue, value);
}
}
}
else {
keyPass = true;
keyLog("type", typeof desiredValue, typeof value);
}
return pass || keyPass;
}, false);
});
addTest("error provocation 1", function(log){
"use strict";
@ -128,6 +172,37 @@ addTest("error provocation 3", function(log){
}
return canvasBlocker;
});
addTest("error properties", function(log){
"use strict";
var canvasBlocker = false;
try{
CanvasRenderingContext2D.prototype.getImageData.apply(undefined, [0, 0, 1, 1]);
}
catch (err){
try {
var name = "TypeError";
if (err.name !== name && err instanceof TypeError){
log("Error name wrong. Expected: ", name, "- got:", err.name);
canvasBlocker = true;
}
var start = "@" + location.href.replace(/\.html$/, ".js");
if (!err.stack.startsWith(start)){
log("Error stack starts wrong. Expected:", start, "- got :", err.stack.split(/\n/g, 2)[0]);
canvasBlocker = true;
}
var message = "'getImageData' called on an object that does not implement interface CanvasRenderingContext2D.";
if (err.message !== message){
log("Error message wrong. Expected: ", message, "- got:", err.message);
canvasBlocker = true;
}
}
catch (e){
canvasBlocker = true;
}
}
return canvasBlocker;
});
function testKnownPixelValue(size, log){
"use strict";