security-and-privacy/CanvasBlocker
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Big linting

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kkapsner 2019-11-28 01:26:35 +01:00
parent b5e6d049ce
commit aef6bd3d59
58 changed files with 2074 additions and 1856 deletions
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59
lib/randomSupplies.js
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@ -4,7 +4,7 @@
(function(){
"use strict";
var scope;
let scope;
if ((typeof exports) !== "undefined"){
scope = exports;
}
@ -15,7 +15,6 @@
const rngTemplate = {
getBitRng: function(length, window){
const rng = this.getRng(Math.ceil(length / 32), window);
let bitIndex = 32;
let rnd = 0;
let mask = 0xffffffff * 2;
return function(value, i){
@ -38,20 +37,21 @@
getValueRng: function(length, window){
const rng = this.getBitRng(length, window);
return function(value, i){
var rnd = rng(value, i);
const rnd = rng(value, i);
// XOR the last bit to alter it... or not
return value ^ (rnd & 0x01);
};
},
getPixelRng: function(length, window, ignoredColors){
var rng = this.getValueRng(length, window);
return function(r, g, b, a, i){ // eslint-disable-line max-params
var index = String.fromCharCode(r, g, b, a);
const rng = this.getValueRng(length, window);
// eslint-disable-next-line max-params
return function(r, g, b, a, i){
const index = String.fromCharCode(r, g, b, a);
if (ignoredColors[index]){
return [r, g, b, a];
}
var baseIndex = i * 4;
const baseIndex = i * 4;
return [
rng(r, baseIndex + 0),
rng(g, baseIndex + 1),
@ -81,7 +81,7 @@
return window.location.host;
}
var persistentRnd = Object.create(null);
let persistentRnd = Object.create(null);
let cookieStoreId = false;
settings.onloaded(function(){
try {
@ -90,8 +90,8 @@
settings.persistentIncognitoRndStorage:
settings.persistentRndStorage
);
for (var domain in storedData){
var value = storedData[domain];
for (let domain in storedData){
const value = storedData[domain];
if (
Array.isArray(value) &&
value.length === 128 &&
@ -103,7 +103,7 @@
}
}
}
catch (e){
catch (error){
// JSON is not valid -> ignore it
}
});
@ -111,7 +111,7 @@
extension.message.on(function(data){
if (data["canvasBlocker-set-domain-rnd"]){
var {domain, incognito, rnd} = data["canvasBlocker-set-domain-rnd"];
const {domain, incognito, rnd} = data["canvasBlocker-set-domain-rnd"];
if (incognito === extension.inIncognitoContext){
persistentRnd[domain] = new Uint8Array(rnd);
}
@ -130,11 +130,11 @@
xhr.send();
xhr = null;
}
catch (e){
logging.verbose("Error in XHR:", e);
catch (error){
logging.verbose("Error in XHR:", error);
}
}
var domain = cookieStoreId + getDomain(window);
const domain = cookieStoreId + getDomain(window);
if (!persistentRnd[domain]){
// create the (sub-)domains random numbers if not existing
persistentRnd[domain] = new Uint8Array(128);
@ -165,26 +165,26 @@
}
};
scope.persistent.getRng = function(length, window){
var bitSet = new Uint32Array(getPersistentRnd(window).buffer);
var bitSetLength = bitSet.length;
const bitSet = new Uint32Array(getPersistentRnd(window).buffer);
const bitSetLength = bitSet.length;
return function(i){
return bitSet[i % bitSetLength];
};
};
scope.persistent.getBitRng = function(length, window){
var bitSet = getPersistentRnd(window);
const bitSet = getPersistentRnd(window);
return function(value, i){
// use the last 7 bits from the value for the index of the
// random number
var index = value & 0x7F;
const index = value & 0x7F;
// use the last 3 bits from the position and the first bit from
// from the value to get bit to use from the random number
var bitIndex = ((i & 0x03) << 1) | (value >>> 7);
const bitIndex = ((i & 0x03) << 1) | (value >>> 7);
// extract the bit
var bit = (bitSet[index] >>> bitIndex) & 0x01;
const bit = (bitSet[index] >>> bitIndex) & 0x01;
return bit;
};
@ -196,16 +196,17 @@
return scope.nonPersistent.getRng(length, window);
};
scope.constant.getPixelRng = (function(){
var colors = Object.create(null);
const colors = Object.create(null);
return function getConstantPixelRng(length, window, ignoredColors){
var rng = scope.nonPersistent.getValueRng(1024, window);
const rng = scope.nonPersistent.getValueRng(1024, window);
return function(r, g, b, a, i){ // eslint-disable-line max-params
var index = String.fromCharCode(r, g, b, a);
// eslint-disable-next-line max-params, no-unused-vars
return function(r, g, b, a, i){
const index = String.fromCharCode(r, g, b, a);
if (ignoredColors[index]){
return [r, g, b, a];
}
var color = colors[index];
let color = colors[index];
if (!color){
color = [
rng(r, 0),
@ -224,8 +225,8 @@
scope.nonPersistent.name = "nonPersistent";
scope.nonPersistent.getRng = function(length, window){
const maxLength = 0x4000;
var randomI = maxLength;
var randomNumbers = new Uint32Array(Math.min(maxLength, length));
let randomI = maxLength;
let randomNumbers = new Uint32Array(Math.min(maxLength, length));
return function(i){
if (randomI >= randomNumbers.length){
// refill the random number bucket if empty
@ -235,7 +236,7 @@
}
window.crypto.getRandomValues(randomNumbers);
}
var rnd = randomNumbers[randomI];
const rnd = randomNumbers[randomI];
randomI += 1;
return rnd;