1
0
mirror of https://github.com/kkapsner/CanvasBlocker synced 2024-10-31 18:38:45 +01:00
CanvasBlocker/lib/check.js
2016-11-13 15:34:33 +01:00

100 lines
2.4 KiB
JavaScript

/* global console,exports */
/* jslint moz: true */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
(function(){
"use strict";
const lists = require("./lists");
const preferences = require("sdk/simple-prefs");
const prefs = preferences.prefs;
const {parseErrorStack} = require("./callingStack");
const {URL} = require("sdk/url");
exports.check = function check({url, errorStack}){
var match = checkBoth(errorStack, url, prefs.blockMode).match(/^(block|allow|fake|ask)(|Readout|Everything|Context|Input|Internal)$/);
if (match){
return {
type: (match[2] === "Everything" || match[2] === "")?
["context", "readout", "input"]:
[match[2].toLowerCase()],
mode: match[1]
};
}
else {
return {
type: ["context", "readout", "input"],
mode: "block"
};
}
};
function checkBoth(errorStack, url, blockMode){
if (prefs.enableStackList && errorStack && checkStack(errorStack)){
return "allow";
}
else {
return checkURL(url, blockMode);
}
}
function checkURL(url, blockMode){
url = new URL(url || "about:blank");
switch (url.protocol){
case "about:":
if (url.href === "about:blank"){
break;
}
return "allowInternal";
case "chrome:":
return "allowInternal";
}
var mode = "block";
switch (blockMode){
case "blockEverything":
mode = "block";
break;
case "block":
case "blockContext":
case "blockReadout":
case "blockInput":
case "ask":
case "askContext":
case "askReadout":
case "askInput":
case "fake":
case "fakeContext":
case "fakeReadout":
case "fakeInput":
case "allow":
case "allowContext":
case "allowReadout":
case "allowInput":
if (url && lists.get("white").match(url)){
mode = "allow";
}
else if (url && lists.get("black").match(url)){
mode = "block";
}
else {
mode = blockMode;
}
break;
case "allowEverything":
mode = "allow";
break;
default:
// console.log("Unknown blocking mode (" + blockMode + "). Default to block everything.");
}
return mode;
}
function checkStack(errorStack){
var callingStack = parseErrorStack(errorStack);
return lists.get("stack").match(callingStack);
}
exports.checkStack = checkStack;
}());