security-and-privacy/CanvasBlocker
security-and-privacy/CanvasBlocker
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Code Releases Activity

Improved settings loading test

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to include force loading detection check.
This commit is contained in:
kkapsner 2019-12-12 00:10:46 +01:00
parent 3668f48247
commit 3ab687f45b
1 changed files with 25 additions and 3 deletions
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28
test/settingsLoading.php
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@ -7,6 +7,7 @@
<link href="testIcon.svg" type="image/png" rel="shortcut icon"> <link href="testIcon.svg" type="image/png" rel="shortcut icon">
<script> <script>
console.log(new Date(), "starting first fingerprint", window.name); console.log(new Date(), "starting first fingerprint", window.name);
var firstDescriptor = Object.getOwnPropertyDescriptor(HTMLCanvasElement.prototype, "getContext");
function fingerPrint(){ function fingerPrint(){
"use strict";var canvas = document.createElement("canvas"); "use strict";var canvas = document.createElement("canvas");
canvas.setAttribute("width", 220); canvas.setAttribute("width", 220);
@ -53,6 +54,15 @@
#output { #output {
padding: 1em; padding: 1em;
} }
.ok {
background-color: green;
}
.kok {
background-color: orange;
}
.nok {
background-color: red;
}
</style> </style>
</head> </head>
<body> <body>
@ -68,16 +78,28 @@
if (firstFingerprint){ if (firstFingerprint){
var output = document.getElementById("output"); var output = document.getElementById("output");
output.textContent = "context API not blocked"; output.textContent = "context API not blocked";
output.appendChild(document.createElement("br"));
window.setTimeout(function(){ window.setTimeout(function(){
"use strict"; "use strict";
console.log(new Date(), "starting second fingerprint", window.name); console.log(new Date(), "starting second fingerprint", window.name);
var secondDescriptor = Object.getOwnPropertyDescriptor(HTMLCanvasElement.prototype, "getContext");
if (firstDescriptor.value === secondDescriptor.value){
output.appendChild(document.createTextNode("descriptor did not change -> good!"));
output.classList.add("ok");
}
else {
output.appendChild(document.createTextNode("descriptor changed -> bad!"));
console.log(firstDescriptor, secondDescriptor);
output.classList.add("nok");
}
output.appendChild(document.createElement("br")); output.appendChild(document.createElement("br"));
var secondFingerprint = fingerPrint(); var secondFingerprint = fingerPrint();
if (firstFingerprint === secondFingerprint){ if (firstFingerprint === secondFingerprint){
return hash(firstFingerprint).then(function(hash){ return hash(firstFingerprint).then(function(hash){
output.appendChild(document.createTextNode("fingerprint consistent (" + hash + ") -> good!")); output.appendChild(document.createTextNode("fingerprint consistent (" + hash + ") -> good!"));
output.style.backgroundColor = "green"; output.classList.add("ok");
return; return;
}); });
} }
@ -90,7 +112,7 @@
") -> very bad! (potential fingerprint leak)" ") -> very bad! (potential fingerprint leak)"
) )
); );
output.style.backgroundColor = "red"; output.classList.add("nok");
return; return;
}); });
} }
@ -98,7 +120,7 @@
} }
else { else {
output.textContent = "context API blocked"; output.textContent = "context API blocked";
output.style.backgroundColor = "orange"; output.classList.add("kok");
} }
</script> </script>
</body></html> </body></html>