526 lines
13 KiB
JavaScript
526 lines
13 KiB
JavaScript
/*
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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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var data = [];
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var providers = [];
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var prvKeys = [];
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var globalStatus;
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var badges = [];
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var badgedStatus;
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var tabid = 0;
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var globalCounter;
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var globalurlcounter;
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var siteBlockedAlert = browser.extension.getURL ('./siteBlockedAlert.html');
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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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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 JSON 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 toJSON(retrievedText) {
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data = JSON.parse(retrievedText);
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getKeys(data.providers);
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createProviders();
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}
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/**
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* Load local saved data, if the browser is offline or
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* some other network trouble.
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*
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*/
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function loadOldDataFromStore()
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{
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browser.storage.local.get('ClearURLsData', function(data){
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if(data.ClearURLsData){
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data = data.ClearURLsData;
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}
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else {
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data = "";
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}
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toJSON(data);
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});
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}
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/**
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* Fetch the Rules & Exception github.
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*
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*/
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function fetchFromURL()
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{
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fetch("https://raw.githubusercontent.com/KevinRoebert/ClearUrls/master/data/data.json?flush_cache=true")
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.then(checkResponse)
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.catch(function(error){
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loadOldDataFromStore();
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});
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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)
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{
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browser.storage.local.set({"ClearURLsData": responseText});
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toJSON(responseText);
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}
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else {
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loadOldDataFromStore();
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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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*/
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function Provider(_name,_completeProvider = false){
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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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if(_completeProvider){
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rules.push(".*");
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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, "mgi");
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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 {String} ProviderURL as RegExp
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*/
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this.matchURL = function(url) {
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return !(this.matchException(url)) && (url.match(urlPattern) != null) && (url.match(urlPattern).length > 0);
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};
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/**
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* Add a rule to the rule array.
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*
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* @param String rule RegExp as string
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*/
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this.addRule = function(rule) {
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rules.push(rule);
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};
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/**
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* Return all 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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return rules;
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};
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/**
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* Add a exception to the exceptions array.
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*
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* @param String exception RegExp as string
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*/
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this.addException = function(exception) {
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exceptions.push(exception);
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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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result = (url.match(new RegExp(exceptions[i], "gi"))) && (url.match(new RegExp(exceptions[i], "gi")).length > 0);
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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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*
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* @param String redirection RegExp as string
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*/
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this.addRedirection = function(redirection) {
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redirections.push(redirection);
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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], "gi")));
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if (result && result.length > 0)
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{
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re = (new RegExp(redirections[i], "gi")).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 rules = provider.getRules();
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var changes = false;
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var cancel = false;
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if(provider.matchURL(url))
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{
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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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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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for (var i = 0; i < rules.length; i++) {
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var bevorReplace = url;
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url = url.replace(new RegExp(rules[i], "gi"), "");
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if(bevorReplace != url)
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{
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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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browser.storage.local.set({"globalCounter": ++globalCounter});
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if(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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changes = true;
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}
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}
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if(provider.isCaneling()){
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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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browser.storage.local.set({"globalCounter": ++globalCounter});
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if(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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cancel = true;
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}
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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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* Return the number of parameters query strings.
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* @param {String} url URL as String
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* @return {int} Number of Parameters
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*/
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function countFields(url)
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{
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var matches = (url.match(/[^\/|\?|&]+=[^\/|\?|&]+/gi) || []);
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var count = matches.length;
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return count;
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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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if(globalurlcounter === null || typeof(globalurlcounter) == "undefined")
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{
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/**
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* Get the globalURLCounter value from the browser storage
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* @param {(data){} Return value form browser.storage.local.get
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*/
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browser.storage.local.get('globalurlcounter', function(data){
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if(data.globalurlcounter){
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globalurlcounter = data.globalurlcounter;
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}
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else {
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globalurlcounter = 0;
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}
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return clearUrl(request);
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});
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}
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else if(globalCounter === null || typeof(globalCounter) == "undefined") {
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/**
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* Get the globalCounter value from the browser storage
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* @param {(data){} Return value form browser.storage.local.get
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*/
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browser.storage.local.get('globalCounter', function(data){
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if(data.globalCounter){
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globalCounter = data.globalCounter;
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}
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else {
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globalCounter = 0;
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}
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return clearUrl(request);
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});
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}
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else {
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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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globalurlcounter += URLbeforeReplaceCount;
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browser.storage.local.set({"globalurlcounter": globalurlcounter});
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browser.storage.local.get('globalStatus', clear);
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function clear(data){
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globalStatus = data.globalStatus;
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if(globalStatus == null){
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globalStatus = true;
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}
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}
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if(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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result = removeFieldsFormURL(providers[i], request);
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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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* an 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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}
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}
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/**
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* Call by each tab is closed.
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*/
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function handleRemoved(tabId, removeInfo) {
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delete badges[tabId];
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}
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/**
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* Get the badged status from the browser storage and put the value
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* into a local variable.
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*
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*/
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function setBadgedStatus() {
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browser.storage.local.get('badgedStatus', function(data) {
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if(data.badgedStatus) {
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badgedStatus = data.badgedStatus;
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browser.browserAction.setBadgeBackgroundColor({
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'color': 'orange'
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});
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}
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else if(data.badgedStatus === null || typeof(data.badgedStatus) == "undefined"){
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badgedStatus = false;
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}
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else {
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badgedStatus = false;
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}
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});
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}
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/**
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* Call the fetch, counter and status functions
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*/
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fetchFromURL();
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setBadgedStatus();
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/**
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* Call by each change in the browser storage.
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*/
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browser.storage.onChanged.addListener(setBadgedStatus);
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/**
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* Call by each tab is closed.
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*/
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browser.tabs.onRemoved.addListener(handleRemoved);
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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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}
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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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* 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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clearUrl,
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{urls: ["<all_urls>"]},
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["blocking"]
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);
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