mirror of https://github.com/gorhill/uBlock.git
677 lines
22 KiB
JavaScript
677 lines
22 KiB
JavaScript
/*******************************************************************************
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µBlock - a Chromium browser extension to block requests.
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Copyright (C) 2014 Raymond Hill
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uBlock
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*/
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/* global chrome, µBlock, punycode, publicSuffixList */
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/******************************************************************************/
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µBlock.getBytesInUse = function() {
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var getBytesInUseHandler = function(bytesInUse) {
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µBlock.storageUsed = bytesInUse;
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};
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chrome.storage.local.getBytesInUse(null, getBytesInUseHandler);
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};
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/******************************************************************************/
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µBlock.saveLocalSettings = function() {
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chrome.storage.local.set(this.localSettings, function() {
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µBlock.getBytesInUse();
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});
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};
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/******************************************************************************/
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µBlock.loadLocalSettings = function() {
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var settingsLoaded = function(store) {
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µBlock.localSettings = store;
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};
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chrome.storage.local.get(this.localSettings, settingsLoaded);
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};
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/******************************************************************************/
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// Save local settings regularly. Not critical.
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µBlock.asyncJobs.add(
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'autoSaveLocalSettings',
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null,
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µBlock.saveLocalSettings.bind(µBlock),
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2 * 60 * 1000,
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true
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);
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/******************************************************************************/
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µBlock.saveUserSettings = function() {
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chrome.storage.local.set(this.userSettings, function() {
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µBlock.getBytesInUse();
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});
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};
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/******************************************************************************/
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µBlock.loadUserSettings = function(callback) {
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var settingsLoaded = function(store) {
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µBlock.userSettings = store;
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if ( typeof callback === 'function' ) {
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callback();
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}
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};
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chrome.storage.local.get(this.userSettings, settingsLoaded);
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};
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/******************************************************************************/
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µBlock.saveWhitelist = function() {
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var bin = {
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'netWhitelist': this.stringFromWhitelist(this.netWhitelist)
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};
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chrome.storage.local.set(bin, function() {
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µBlock.getBytesInUse();
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});
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this.netWhitelistModifyTime = Date.now();
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};
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/******************************************************************************/
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µBlock.loadWhitelist = function(callback) {
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var onWhitelistLoaded = function(store) {
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var µb = µBlock;
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// Backward compatibility after fix to #5
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// TODO: remove once all users are up to date with latest version.
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if ( store.netExceptionList ) {
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if ( store.netWhitelist === '' ) {
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store.netWhitelist = Object.keys(store.netExceptionList).join('\n');
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if ( store.netWhitelist !== '' ) {
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chrome.storage.local.set({ 'netWhitelist': store.netWhitelist });
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}
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}
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chrome.storage.local.remove('netExceptionList');
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}
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µb.netWhitelist = µb.whitelistFromString(store.netWhitelist);
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µb.netWhitelistModifyTime = Date.now();
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if ( typeof callback === 'function' ) {
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callback();
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}
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};
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var bin = {
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'netWhitelist': '',
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'netExceptionList': ''
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};
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chrome.storage.local.get(bin, onWhitelistLoaded);
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};
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/******************************************************************************/
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µBlock.saveUserFilters = function(content, callback) {
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return this.assets.put(this.userFiltersPath, content, callback);
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};
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/******************************************************************************/
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µBlock.loadUserFilters = function(callback) {
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return this.assets.get(this.userFiltersPath, callback);
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};
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/******************************************************************************/
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µBlock.appendUserFilters = function(content) {
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var µb = this;
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var onSaved = function(details) {
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if ( details.error ) {
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return;
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}
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µb.mergeFilterText(content);
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µb.netFilteringEngine.freeze();
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µb.cosmeticFilteringEngine.freeze();
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µb.destroySelfie();
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µb.toSelfieAsync();
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};
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var onLoaded = function(details) {
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if ( details.error ) {
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return;
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}
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if ( details.content.indexOf(content.trim()) !== -1 ) {
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return;
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}
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µb.saveUserFilters(details.content + '\n' + content, onSaved);
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};
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if ( content.length > 0 ) {
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this.loadUserFilters(onLoaded);
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}
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};
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/******************************************************************************/
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µBlock.getAvailableLists = function(callback) {
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var availableLists = {};
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var redirections = {};
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// selected lists
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var onSelectedListsLoaded = function(store) {
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var µb = µBlock;
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var lists = store.remoteBlacklists;
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var locations = Object.keys(lists);
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var oldLocation, newLocation;
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var availableEntry, storedEntry;
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while ( oldLocation = locations.pop() ) {
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newLocation = redirections[oldLocation] || oldLocation;
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availableEntry = availableLists[newLocation];
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if ( availableEntry === undefined ) {
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continue;
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}
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storedEntry = lists[oldLocation];
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availableEntry.off = storedEntry.off || false;
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µb.assets.setHomeURL(newLocation, availableEntry.homeURL);
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if ( storedEntry.entryCount !== undefined ) {
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availableEntry.entryCount = storedEntry.entryCount;
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}
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if ( storedEntry.entryUsedCount !== undefined ) {
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availableEntry.entryUsedCount = storedEntry.entryUsedCount;
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}
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// This may happen if the list name was pulled from the list content
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if ( availableEntry.title === '' && storedEntry.title !== '' ) {
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availableEntry.title = storedEntry.title;
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}
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}
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callback(availableLists);
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};
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// built-in lists
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var onBuiltinListsLoaded = function(details) {
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var location, locations;
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try {
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locations = JSON.parse(details.content);
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} catch (e) {
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locations = {};
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}
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var entry;
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for ( location in locations ) {
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if ( locations.hasOwnProperty(location) === false ) {
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continue;
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}
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entry = locations[location];
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availableLists['assets/thirdparties/' + location] = entry;
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if ( entry.old !== undefined ) {
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redirections[entry.old] = location;
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delete entry.old;
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}
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}
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// Now get user's selection of lists
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chrome.storage.local.get(
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{ 'remoteBlacklists': availableLists },
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onSelectedListsLoaded
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);
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};
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// permanent lists
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var location;
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var lists = this.permanentLists;
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for ( location in lists ) {
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if ( lists.hasOwnProperty(location) === false ) {
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continue;
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}
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availableLists[location] = lists[location];
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}
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// custom lists
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var c;
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var locations = this.userSettings.externalLists.split('\n');
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for ( var i = 0; i < locations.length; i++ ) {
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location = locations[i].trim();
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c = location.charAt(0);
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if ( location === '' || c === '!' || c === '#' ) {
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continue;
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}
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// Coarse validation
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if ( /[^0-9A-Za-z!*'();:@&=+$,\/?%#\[\]_.~-]/.test(location) ) {
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continue;
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}
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availableLists[location] = {
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title: '',
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group: 'custom',
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external: true
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};
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}
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// get built-in block lists.
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this.assets.get('assets/ublock/filter-lists.json', onBuiltinListsLoaded);
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};
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/******************************************************************************/
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µBlock.loadFilterLists = function(callback) {
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var µb = this;
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var blacklistLoadCount;
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if ( typeof callback !== 'function' ) {
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callback = this.noopFunc;
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}
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var loadBlacklistsEnd = function() {
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µb.netFilteringEngine.freeze();
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µb.cosmeticFilteringEngine.freeze();
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chrome.storage.local.set({ 'remoteBlacklists': µb.remoteBlacklists });
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µb.messaging.announce({ what: 'loadUbiquitousBlacklistCompleted' });
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µb.toSelfieAsync();
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callback();
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};
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var mergeBlacklist = function(details) {
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µb.mergeFilterList(details);
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blacklistLoadCount -= 1;
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if ( blacklistLoadCount === 0 ) {
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loadBlacklistsEnd();
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}
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};
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var loadBlacklistsStart = function(lists) {
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µb.remoteBlacklists = lists;
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µb.netFilteringEngine.reset();
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µb.cosmeticFilteringEngine.reset();
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µb.destroySelfie();
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var locations = Object.keys(lists);
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blacklistLoadCount = locations.length;
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if ( blacklistLoadCount === 0 ) {
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loadBlacklistsEnd();
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return;
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}
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// Load each preset blacklist which is not disabled.
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var location;
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while ( location = locations.pop() ) {
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// rhill 2013-12-09:
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// Ignore list if disabled
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// https://github.com/gorhill/httpswitchboard/issues/78
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if ( lists[location].off ) {
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blacklistLoadCount -= 1;
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continue;
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}
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µb.assets.get(location, mergeBlacklist);
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}
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};
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this.getAvailableLists(loadBlacklistsStart);
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};
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/******************************************************************************/
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µBlock.mergeFilterList = function(details) {
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// console.log('µBlock > mergeFilterList from "%s": "%s..."', details.path, details.content.slice(0, 40));
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var netFilteringEngine = this.netFilteringEngine;
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var cosmeticFilteringEngine = this.cosmeticFilteringEngine;
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var duplicateCount = netFilteringEngine.duplicateCount + cosmeticFilteringEngine.duplicateCount;
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var acceptedCount = netFilteringEngine.acceptedCount + cosmeticFilteringEngine.acceptedCount;
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this.mergeFilterText(details.content);
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// For convenience, store the number of entries for this
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// blacklist, user might be happy to know this information.
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duplicateCount = netFilteringEngine.duplicateCount + cosmeticFilteringEngine.duplicateCount - duplicateCount;
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acceptedCount = netFilteringEngine.acceptedCount + cosmeticFilteringEngine.acceptedCount - acceptedCount;
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var filterListMeta = this.remoteBlacklists[details.path];
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filterListMeta.entryCount = acceptedCount;
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filterListMeta.entryUsedCount = acceptedCount - duplicateCount;
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// Try to extract a human-friendly name (works only for
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// ABP-compatible filter lists)
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if ( filterListMeta.title === '' ) {
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var matches = details.content.slice(0, 1024).match(/(?:^|\n)!\s*Title:([^\n]+)/i);
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if ( matches !== null ) {
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filterListMeta.title = matches[1].trim();
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}
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}
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};
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/******************************************************************************/
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µBlock.mergeFilterText = function(rawText) {
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var rawEnd = rawText.length;
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// Useful references:
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// https://adblockplus.org/en/filter-cheatsheet
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// https://adblockplus.org/en/filters
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var netFilteringEngine = this.netFilteringEngine;
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var cosmeticFilteringEngine = this.cosmeticFilteringEngine;
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var parseCosmeticFilters = this.userSettings.parseAllABPHideFilters;
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var reIsCosmeticFilter = /#@?#/;
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var reLocalhost = /(?:^|\s)(?:localhost\.localdomain|localhost|local|broadcasthost|0\.0\.0\.0|127\.0\.0\.1|::1|fe80::1%lo0)(?=\s|$)/g;
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var reAsciiSegment = /^[\x21-\x7e]+$/;
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var matches;
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var lineBeg = 0, lineEnd, currentLineBeg;
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var line, c;
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while ( lineBeg < rawEnd ) {
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lineEnd = rawText.indexOf('\n', lineBeg);
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if ( lineEnd === -1 ) {
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lineEnd = rawText.indexOf('\r', lineBeg);
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if ( lineEnd === -1 ) {
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lineEnd = rawEnd;
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}
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}
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// rhill 2014-04-18: The trim is important here, as without it there
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// could be a lingering `\r` which would cause problems in the
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// following parsing code.
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line = rawText.slice(lineBeg, lineEnd).trim();
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currentLineBeg = lineBeg;
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lineBeg = lineEnd + 1;
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// Strip comments
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c = line.charAt(0);
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if ( c === '!' || c === '[' ) {
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continue;
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}
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// Parse or skip cosmetic filters
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if ( parseCosmeticFilters ) {
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if ( cosmeticFilteringEngine.add(line) ) {
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continue;
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}
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} else if ( reIsCosmeticFilter.test(line) ) {
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continue;
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}
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if ( c === '#' ) {
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continue;
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}
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// https://github.com/gorhill/httpswitchboard/issues/15
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// Ensure localhost et al. don't end up in the ubiquitous blacklist.
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line = line
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.replace(/\s+#.*$/, '')
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.toLowerCase()
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.replace(reLocalhost, '')
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.trim();
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// The filter is whatever sequence of printable ascii character without
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// whitespaces
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matches = reAsciiSegment.exec(line);
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if ( matches === null ) {
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//console.debug('µBlock.mergeFilterList(): skipping "%s"', lineRaw);
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continue;
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}
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// Bypass anomalies
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// For example, when a filter contains whitespace characters, or
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// whatever else outside the range of printable ascii characters.
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if ( matches[0] !== line ) {
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// console.error('"%s" !== "%s"', matches[0], line);
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continue;
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}
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netFilteringEngine.add(matches[0]);
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}
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};
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/******************************************************************************/
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// `switches` contains the preset blacklists for which the switch must be
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// revisited.
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µBlock.reloadPresetBlacklists = function(switches, update) {
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var µb = µBlock;
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var onFilterListsReady = function() {
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µb.loadUpdatableAssets({ update: update, psl: update });
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};
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// Toggle switches, if any
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if ( switches !== undefined ) {
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var filterLists = this.remoteBlacklists;
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var i = switches.length;
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while ( i-- ) {
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if ( filterLists.hasOwnProperty(switches[i].location) === false ) {
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continue;
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}
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filterLists[switches[i].location].off = !!switches[i].off;
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}
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// Save switch states
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chrome.storage.local.set({ 'remoteBlacklists': filterLists }, onFilterListsReady);
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} else {
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onFilterListsReady();
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}
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};
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/******************************************************************************/
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µBlock.loadPublicSuffixList = function(callback) {
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if ( typeof callback !== 'function' ) {
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callback = this.noopFunc;
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}
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var applyPublicSuffixList = function(details) {
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// TODO: Not getting proper suffix list is a bit serious, I think
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// the extension should be force-restarted if it occurs..
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if ( !details.error ) {
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publicSuffixList.parse(details.content, punycode.toASCII);
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}
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callback();
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};
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this.assets.get(this.pslPath, applyPublicSuffixList);
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};
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/******************************************************************************/
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// Load updatable assets
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µBlock.loadUpdatableAssets = function(details) {
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var µb = this;
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details = details || {};
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var update = details.update !== false;
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this.assets.autoUpdate = update || this.userSettings.autoUpdate;
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this.assets.autoUpdateDelay = this.updateAssetsEvery;
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var onFiltersReady = function() {
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if ( update ) {
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µb.updater.restart();
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}
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};
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var onPSLReady = function() {
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µb.loadFilterLists(onFiltersReady);
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};
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if ( details.psl !== false ) {
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this.loadPublicSuffixList(onPSLReady);
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} else {
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this.loadFilterLists(onFiltersReady);
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}
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};
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/******************************************************************************/
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µBlock.toSelfie = function() {
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var selfie = {
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magic: this.selfieMagic,
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publicSuffixList: publicSuffixList.toSelfie(),
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filterLists: this.remoteBlacklists,
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netFilteringEngine: this.netFilteringEngine.toSelfie(),
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cosmeticFilteringEngine: this.cosmeticFilteringEngine.toSelfie()
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};
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chrome.storage.local.set({ selfie: selfie });
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// console.log('µBlock.toSelfie> made a selfie!');
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};
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// This is to be sure the selfie is generated in a sane manner: the selfie will
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// be generated if the user doesn't change his filter lists selection for
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// some set time.
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µBlock.toSelfieAsync = function(after) {
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if ( typeof after !== 'number' ) {
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after = this.selfieAfter;
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}
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this.asyncJobs.add(
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'toSelfie',
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null,
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this.toSelfie.bind(this),
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after,
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false
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);
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};
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/******************************************************************************/
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µBlock.fromSelfie = function(callback) {
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var µb = this;
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if ( typeof callback !== 'function' ) {
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callback = this.noopFunc;
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}
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var onSelfieReady = function(store) {
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var selfie = store.selfie;
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if ( typeof selfie !== 'object' || selfie.magic !== µb.selfieMagic ) {
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callback(false);
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return;
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}
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if ( publicSuffixList.fromSelfie(selfie.publicSuffixList) !== true ) {
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callback(false);
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return;
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}
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|
// console.log('µBlock.fromSelfie> selfie looks good');
|
|
µb.remoteBlacklists = selfie.filterLists;
|
|
µb.netFilteringEngine.fromSelfie(selfie.netFilteringEngine);
|
|
µb.cosmeticFilteringEngine.fromSelfie(selfie.cosmeticFilteringEngine);
|
|
callback(true);
|
|
};
|
|
|
|
chrome.storage.local.get('selfie', onSelfieReady);
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
µBlock.destroySelfie = function() {
|
|
chrome.storage.local.remove('selfie');
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
// Load all
|
|
|
|
µBlock.load = function() {
|
|
var µb = this;
|
|
var fromSelfie = false;
|
|
|
|
// Final initialization steps after all needed assets are in memory.
|
|
// - Initialize internal state with maybe already existing tabs.
|
|
// - Schedule next update operation.
|
|
var onAllDone = function() {
|
|
// http://code.google.com/p/chromium/issues/detail?id=410868#c11
|
|
// Need to be sure to access `chrome.runtime.lastError` to prevent
|
|
// spurious warnings in the console.
|
|
var scriptDone = function() {
|
|
chrome.runtime.lastError;
|
|
};
|
|
var scriptEnd = function(tabId) {
|
|
if ( chrome.runtime.lastError ) {
|
|
return;
|
|
}
|
|
chrome.tabs.executeScript(tabId, {
|
|
file: 'js/contentscript-end.js',
|
|
allFrames: true,
|
|
runAt: 'document_idle'
|
|
}, scriptDone);
|
|
};
|
|
var scriptStart = function(tabId) {
|
|
chrome.tabs.executeScript(tabId, {
|
|
file: 'js/contentscript-start.js',
|
|
allFrames: true,
|
|
runAt: 'document_idle'
|
|
}, function(){ scriptEnd(tabId); });
|
|
};
|
|
var bindToTabs = function(tabs) {
|
|
var i = tabs.length, tab;
|
|
while ( i-- ) {
|
|
tab = tabs[i];
|
|
µb.bindTabToPageStats(tab.id, tab.url);
|
|
// https://github.com/gorhill/uBlock/issues/129
|
|
scriptStart(tab.id);
|
|
}
|
|
};
|
|
chrome.tabs.query({ url: 'http://*/*' }, bindToTabs);
|
|
chrome.tabs.query({ url: 'https://*/*' }, bindToTabs);
|
|
|
|
// https://github.com/gorhill/uBlock/issues/184
|
|
// If we restored a selfie, check for updates not too far
|
|
// in the future.
|
|
var nextUpdate = fromSelfie === false && µb.userSettings.autoUpdate ?
|
|
µb.nextUpdateAfter :
|
|
µb.firstUpdateAfter;
|
|
µb.updater.restart(nextUpdate);
|
|
};
|
|
|
|
// https://github.com/gorhill/uBlock/issues/226
|
|
// Whitelist in memory.
|
|
// Whitelist parser needs PSL to be ready.
|
|
var onWhitelistReady = function() {
|
|
onAllDone();
|
|
};
|
|
|
|
// Filters are in memory.
|
|
// Filter engines need PSL to be ready.
|
|
var onFiltersReady = function() {
|
|
µb.loadWhitelist(onWhitelistReady);
|
|
};
|
|
|
|
// Load order because dependencies:
|
|
// User settings -> PSL -> [filter lists, user whitelist]
|
|
var onPSLReady = function() {
|
|
µb.loadFilterLists(onFiltersReady);
|
|
};
|
|
|
|
// If no selfie available, take the long way, i.e. load and parse
|
|
// raw data.
|
|
var onSelfieReady = function(success) {
|
|
if ( success === true ) {
|
|
fromSelfie = true;
|
|
µb.loadWhitelist(onWhitelistReady);
|
|
return;
|
|
}
|
|
µb.assets.autoUpdate = µb.userSettings.autoUpdate;
|
|
µb.loadPublicSuffixList(onPSLReady);
|
|
};
|
|
|
|
// User settings are in memory
|
|
var onUserSettingsReady = function() {
|
|
µb.fromSelfie(onSelfieReady);
|
|
};
|
|
|
|
this.loadUserSettings(onUserSettingsReady);
|
|
this.loadLocalSettings();
|
|
this.getBytesInUse();
|
|
};
|