81bc71de5e
The command pattern has been implemented so that ClearURLs also works in private mode. See also: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/runtime/sendMessage
633 lines
19 KiB
JavaScript
633 lines
19 KiB
JavaScript
/*jshint esversion: 6 */
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/*
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* This script is responsible for the core functionalities.
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*/
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var providers = [];
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var prvKeys = [];
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var badges = [];
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var tabid = 0;
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var siteBlockedAlert = 'javascript:void(0)';
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var dataHash;
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var localDataHash;
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var os;
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var currentURL;
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function start()
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{
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changeIcon();
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/**
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* Save OS Version
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*/
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browser.runtime.getPlatformInfo(function(info) {
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os = info.os;
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/**
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* Initialize the JSON provider object keys.
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*
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* @param {JSON Object} obj
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*/
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function getKeys(obj){
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for(var key in obj){
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prvKeys.push(key);
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}
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}
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/**
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* Initialize the providers form the JSON object.
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*
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*/
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function createProviders()
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{
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data = storage.ClearURLsData;
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for(var p = 0; p < prvKeys.length; p++)
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{
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//Create new provider
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providers.push(new Provider(prvKeys[p],data.providers[prvKeys[p]].completeProvider));
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//Add URL Pattern
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providers[p].setURLPattern(data.providers[prvKeys[p]].urlPattern);
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//Add rules to provider
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for(var r = 0; r < data.providers[prvKeys[p]].rules.length; r++)
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{
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providers[p].addRule(data.providers[prvKeys[p]].rules[r]);
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}
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//Add exceptions to provider
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for(var e = 0; e < data.providers[prvKeys[p]].exceptions.length; e++)
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{
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providers[p].addException(data.providers[prvKeys[p]].exceptions[e]);
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}
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//Add redirections to provider
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for(var re = 0; re < data.providers[prvKeys[p]].redirections.length; re++)
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{
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providers[p].addRedirection(data.providers[prvKeys[p]].redirections[re]);
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}
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}
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}
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/**
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* Convert the external data to Objects and
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* call the create provider function.
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*
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* @param {String} retrievedText - pure data form github
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*/
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function toObject(retrievedText) {
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getKeys(storage.ClearURLsData.providers);
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createProviders();
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}
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/**
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* Get the hash for the rule file on github.
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* Check the hash with the hash form the local file.
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* If the hash has changed, then download the new rule file.
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* Else do nothing.
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*/
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function getHash()
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{
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//Get the target hash from github
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fetch(storage.hashURL)
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.then(function(response){
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var responseTextHash = response.clone().text().then(function(responseTextHash){
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if(response.ok && $.trim(responseTextHash))
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{
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dataHash = responseTextHash;
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if($.trim(dataHash) !== $.trim(localDataHash))
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{
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fetchFromURL();
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}
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else {
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toObject(storage.ClearURLsData);
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storeHashStatus(1);
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}
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}
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else {
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dataHash = false;
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}
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});
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});
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}
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/*
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* ##################################################################
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* # Fetch Rules & Exception from URL #
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* ##################################################################
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*/
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function fetchFromURL()
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{
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fetch(storage.ruleURL)
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.then(checkResponse);
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function checkResponse(response)
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{
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var responseText = response.clone().text().then(function(responseText){
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if(response.ok && $.trim(responseText))
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{
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var downloadedFileHash = $.sha256(responseText);
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if($.trim(downloadedFileHash) === $.trim(dataHash))
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{
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storage.ClearURLsData = responseText;
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storage.dataHash = downloadedFileHash;
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storeHashStatus(2);
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}
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else {
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storeHashStatus(3);
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}
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storage.ClearURLsData = JSON.parse(storage.ClearURLsData);
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toObject(storage.ClearURLsData);
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}
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});
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}
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}
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// ##################################################################
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/*
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* ##################################################################
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* # Supertyp Provider #
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* ##################################################################
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*/
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/**
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* Declare constructor
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*
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* @param {String} _name Provider name
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* @param {boolean} _completeProvider Set URL Pattern as rule
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* @param {boolean} _isActive Is the provider active?
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*/
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function Provider(_name, _completeProvider = false, _isActive = true){
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var name = _name;
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var urlPattern;
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var rules = [];
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var exceptions = [];
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var canceling = _completeProvider;
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var redirections = [];
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var active = _isActive;
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if(_completeProvider){
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rules.push(".*");
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}
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/**
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* Returns the provider name.
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* @return {String}
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*/
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this.getName = function() {
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return name;
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};
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/**
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* Add URL pattern.
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*
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* @require urlPatterns as RegExp
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*/
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this.setURLPattern = function(urlPatterns) {
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urlPattern = new RegExp(urlPatterns, "i");
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};
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/**
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* Return if the Provider Request is canceled
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* @return {Boolean} isCanceled
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*/
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this.isCaneling = function() {
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return canceling;
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};
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/**
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* Check the url is matching the ProviderURL.
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*
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* @return {boolean} ProviderURL as RegExp
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*/
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this.matchURL = function(url) {
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return !(this.matchException(url)) && urlPattern.test(url);
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};
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/**
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* Add a rule to the rule array
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* and replace old rule with new rule.
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*
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* @param {String} rule RegExp as string
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* @param {boolean} isActive Is this rule active?
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*/
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this.addRule = function(rule, isActive = true) {
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for(var i=0; i < rules.length; i++)
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{
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if(rules[i][0] === rule)
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{
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rules[i] = [rule, isActive];
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return;
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}
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}
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rules.push([rule, isActive]);
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};
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/**
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* Return all active rules as an array.
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*
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* @return Array RegExp strings
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*/
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this.getRules = function() {
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var rawRules = [];
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rules.forEach(rule => {
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if(rule[1] === true)
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{
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rawRules.push(rule[0]);
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}
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});
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return rawRules;
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};
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/**
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* Add a exception to the exceptions array
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* and replace old with new exception.
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*
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* @param {String} exception RegExp as string
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* @param {Boolean} isActive Is this exception acitve?
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*/
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this.addException = function(exception, isActive = true) {
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for(var i=0; i < exceptions.length; i++)
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{
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if(exceptions[i][0] === exception)
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{
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exceptions[i] = [exception, isActive];
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return;
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}
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}
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exceptions.push([exception, isActive]);
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};
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/**
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* Private helper method to check if the url
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* an exception.
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*
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* @param {String} url RegExp as string
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* @return {boolean} if matching? true: false
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*/
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this.matchException = function(url) {
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var result = false;
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//Add the site blocked alert to every exception
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if(url == siteBlockedAlert) return true;
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for (var i = 0; i < exceptions.length; i++) {
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if(result) { break; }
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if(exceptions[i][1])
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{
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exception_regex = new RegExp(exceptions[i][0], "i");
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result = exception_regex.test(url);
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}
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}
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return result;
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};
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/**
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* Add a redirection to the redirections array
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* and replace old with new redirection.
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*
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* @param {String} redirection RegExp as string
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* @param {Boolean} isActive Is this redirection active?
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*/
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this.addRedirection = function(redirection, isActive = true) {
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for(var i=0; i < redirections.length; i++)
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{
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if(redirections[i][0] === redirection) {
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redirections[i] = [redirection, isActive];
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return;
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}
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}
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redirections.push([redirection, isActive]);
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};
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/**
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* Return all redirection.
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*
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* @return url
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*/
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this.getRedirection = function(url) {
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var re = null;
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for(var i = 0; i < redirections.length; i++)
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{
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result = (url.match(new RegExp(redirections[i][0], "i")));
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if (result && result.length > 0 && redirections[i][1])
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{
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re = (new RegExp(redirections[i][0], "i")).exec(url)[1];
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break;
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}
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}
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return re;
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};
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}
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// ##################################################################
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/**
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* Helper function which remove the tracking fields
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* for each provider given as parameter.
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*
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* @param {Provider} provider Provider-Object
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* @param {webRequest} request webRequest-Object
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* @return {Array} Array with changes and url fields
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*/
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function removeFieldsFormURL(provider, request)
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{
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var url = request.url;
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var domain = url.replace(new RegExp("\\?.*", "i"), "");
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var fields = "";
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var rules = provider.getRules();
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var changes = false;
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var cancel = false;
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/*
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* Expand the url by provider redirections. So no tracking on
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* url redirections form sites to sites.
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*/
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var re = provider.getRedirection(url);
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if(re !== null)
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{
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url = decodeURIComponent(re);
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//Log the action
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pushToLog(request.url, re, translate('log_redirect'));
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return {
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"redirect": true,
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"url": url
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};
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}
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/**
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* Only test for matches, if there are fields that can be cleaned.
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*/
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if(existsFields(url))
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{
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/**
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* It must be non-greedy, because by default .* will match
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* all ? chars. So the replace function delete everything
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* before the last ?. With adding a ? on the quantifier *,
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* we fixed this problem.
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*/
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fields = url.replace(new RegExp(".*?\\?", "i"), "");
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for (var i = 0; i < rules.length; i++) {
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var beforReplace = fields;
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fields = fields.replace(new RegExp(rules[i], "i"), "");
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if(beforReplace != fields)
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{
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//Log the action
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pushToLog(domain+"?"+beforReplace, domain+"?"+fields, rules[i]);
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if(badges[tabid] == null)
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{
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badges[tabid] = 0;
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}
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increaseURLCounter();
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if(!checkOSAndroid())
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{
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if(storage.badgedStatus) {
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browser.browserAction.setBadgeText({text: (++badges[tabid]).toString(), tabId: tabid});
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}
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else
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{
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browser.browserAction.setBadgeText({text: "", tabId: tabid});
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}
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}
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changes = true;
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}
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}
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url = domain+"?"+fields;
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}
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else {
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if(domain != url)
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{
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url = domain;
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changes = true;
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}
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}
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if(provider.isCaneling()){
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pushToLog(request.url, request.url, translate('log_domain_blocked'));
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if(badges[tabid] == null)
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{
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badges[tabid] = 0;
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}
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increaseURLCounter();
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if(!checkOSAndroid())
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{
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if(storage.badgedStatus) {
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browser.browserAction.setBadgeText({text: (++badges[tabid]).toString(), tabId: tabid});
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}
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else
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{
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browser.browserAction.setBadgeText({text: "", tabId: tabid});
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}
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}
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cancel = true;
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}
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return {
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"changes": changes,
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"url": url,
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"cancel": cancel
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};
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}
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/**
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* Function which called from the webRequest to
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* remove the tracking fields from the url.
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*
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* @param {webRequest} request webRequest-Object
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* @return {Array} redirectUrl or none
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*/
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function clearUrl(request)
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{
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var URLbeforeReplaceCount = countFields(request.url);
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//Add Fields form Request to global url counter
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increaseGlobalURLCounter(URLbeforeReplaceCount);
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if(storage.globalStatus){
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var result = {
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"changes": false,
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"url": "",
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"redirect": false,
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"cancel": false
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};
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/*
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* Call for every provider the removeFieldsFormURL method.
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*/
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for (var i = 0; i < providers.length; i++) {
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if(providers[i].matchURL(request.url))
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{
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result = removeFieldsFormURL(providers[i], request);
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}
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/*
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* Expand urls and bypass tracking.
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* Cancel the active request.
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*/
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if(result.redirect)
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{
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browser.tabs.update(request.tabId, {url: result.url});
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return {cancel: true};
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}
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/*
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* Cancel the Request and redirect to the site blocked alert page,
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* to inform the user about the full url blocking.
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*/
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if(result.cancel){
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return {
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redirectUrl: siteBlockedAlert
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};
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}
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/*
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* Ensure that the function go not into
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* a loop.
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*/
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if(result.changes){
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return {
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redirectUrl: result.url
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};
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}
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}
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}
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// Default case
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return {};
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}
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/**
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* Function to log all activities from ClearUrls.
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* Only logging when activated.
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* The log is only temporary saved in the cache and will
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* permanently saved with the saveLogOnClose function.
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*
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* @param beforeProcessing the url before the clear process
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* @param afterProcessing the url after the clear process
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* @param rule the rule that triggered the process
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*/
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function pushToLog(beforeProcessing, afterProcessing, rule)
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{
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if(storage.loggingStatus)
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{
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storage.log.log.push(
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{
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"before": beforeProcessing,
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"after": afterProcessing,
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"rule": rule,
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"timestamp": Date.now()
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}
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);
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}
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}
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/**
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* Call loadOldDataFromStore, getHash, counter, status and log functions
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*/
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loadOldDataFromStore();
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getHash();
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setBadgedStatus();
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/**
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* Call by each tab is updated.
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* And if url has changed.
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*/
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function handleUpdated(tabId, changeInfo, tabInfo) {
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if(changeInfo.url)
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{
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delete badges[tabId];
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}
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currentURL = tabInfo.url;
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}
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/**
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* Call by each tab is updated.
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*/
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browser.tabs.onUpdated.addListener(handleUpdated);
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/**
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* Call by each tab change to set the actual tab id
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*/
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function handleActivated(activeInfo) {
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tabid = activeInfo.tabId;
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browser.tabs.get(tabid).then(function (tab) {
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currentURL = tab.url;
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});
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}
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/**
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* Call by each tab change.
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*/
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browser.tabs.onActivated.addListener(handleActivated);
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/**
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* Check the request.
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*/
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function promise(requestDetails)
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{
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if(isDataURL(requestDetails))
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{
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return {};
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}
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else {
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var ret = clearUrl(requestDetails);
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return ret;
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}
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}
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/**
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* To prevent long loading on data urls
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* we will check here for data urls.
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*
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* @type {requestDetails}
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* @return {boolean}
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*/
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function isDataURL(requestDetails) {
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var s = requestDetails.url;
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return s.substring(0,4) == "data";
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}
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/**
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* Call by each Request and checking the url.
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*
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* @type {Array}
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*/
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browser.webRequest.onBeforeRequest.addListener(
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promise,
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{urls: ["<all_urls>"], types: getData("types")},
|
|
["blocking"]
|
|
);
|
|
});
|
|
}
|