mirror of https://github.com/gorhill/uBlock.git
381 lines
12 KiB
JavaScript
381 lines
12 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() {
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var settingsLoaded = function(store) {
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µBlock.userSettings = store;
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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.loadUbiquitousBlacklists = function() {
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var blacklists;
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var blacklistLoadCount;
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var obsoleteBlacklists = [];
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var removeObsoleteBlacklistsHandler = function(store) {
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if ( !store.remoteBlacklists ) {
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return;
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}
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var location;
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while ( location = obsoleteBlacklists.pop() ) {
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delete store.remoteBlacklists[location];
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}
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chrome.storage.local.set(store);
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};
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var removeObsoleteBlacklists = function() {
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if ( obsoleteBlacklists.length === 0 ) {
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return;
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}
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chrome.storage.local.get(
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{ 'remoteBlacklists': µBlock.remoteBlacklists },
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removeObsoleteBlacklistsHandler
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);
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};
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var mergeBlacklist = function(details) {
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var µb = µBlock;
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µb.mergeUbiquitousBlacklist(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 loadBlacklistsEnd = function() {
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µBlock.abpFilters.freeze();
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µBlock.abpHideFilters.freeze();
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removeObsoleteBlacklists();
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µBlock.messaging.announce({ what: 'loadUbiquitousBlacklistCompleted' });
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};
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var loadBlacklistsStart = function(store) {
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var µb = µBlock;
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// rhill 2013-12-10: set all existing entries to `false`.
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µb.abpFilters.reset();
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µb.abpHideFilters.reset();
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blacklists = store.remoteBlacklists;
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var blacklistLocations = Object.keys(store.remoteBlacklists);
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blacklistLoadCount = blacklistLocations.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 = blacklistLocations.pop() ) {
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// If loaded list location is not part of default list locations,
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// remove its entry from local storage.
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if ( !µb.remoteBlacklists[location] ) {
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obsoleteBlacklists.push(location);
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blacklistLoadCount -= 1;
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continue;
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}
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// https://github.com/gorhill/httpswitchboard/issues/218
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// Transfer potentially existing list title into restored list data.
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if ( store.remoteBlacklists[location].title !== µb.remoteBlacklists[location].title ) {
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store.remoteBlacklists[location].title = µb.remoteBlacklists[location].title;
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}
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// Store details of this preset blacklist
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µb.remoteBlacklists[location] = store.remoteBlacklists[location];
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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 ( store.remoteBlacklists[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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var onListOfBlockListsLoaded = function(details) {
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var µb = µBlock;
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// Initialize built-in list of 3rd-party block lists.
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var lists = JSON.parse(details.content);
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for ( var 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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µb.remoteBlacklists['assets/thirdparties/' + location] = lists[location];
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}
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// Now get user's selection of list of block lists.
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chrome.storage.local.get(
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{ 'remoteBlacklists': µb.remoteBlacklists },
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loadBlacklistsStart
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);
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};
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// Reset list of 3rd-party block lists.
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for ( var location in this.remoteBlacklists ) {
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if ( location.indexOf('assets/thirdparties/') === 0 ) {
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delete this.remoteBlacklists[location];
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}
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}
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// Get new list of 3rd-party block lists.
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this.assets.get('assets/ublock/filter-lists.json', onListOfBlockListsLoaded);
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};
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/******************************************************************************/
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µBlock.mergeUbiquitousBlacklist = function(details) {
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// console.log('µBlock > mergeUbiquitousBlacklist from "%s": "%s..."', details.path, details.content.slice(0, 40));
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var rawText = details.content;
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var rawEnd = rawText.length;
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// rhill 2013-10-21: No need to prefix with '* ', the hostname is just what
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// we need for preset blacklists. The prefix '* ' is ONLY needed when
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// used as a filter in temporary blacklist.
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// rhill 2014-01-22: Transpose possible Adblock Plus-filter syntax
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// into a plain hostname if possible.
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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 abpFilters = this.abpFilters;
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var abpHideFilters = this.userSettings.parseAllABPHideFilters ? this.abpHideFilters : null;
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var thisListCount = 0;
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var thisListUsedCount = 0;
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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|$)/g;
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var reAdblockFilter = /^[^a-z0-9:]|[^a-z0-9]$|[^a-z0-9_:.-]/;
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var reAdblockHostFilter = /^\|\|([a-z0-9.-]+[a-z0-9])\^?$/;
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var reAsciiSegment = /^[\x21-\x7e]+$/;
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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 < 0 ) {
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lineEnd = rawText.indexOf('\r', lineBeg);
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if ( lineEnd < 0 ) {
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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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// 2014-05-18: ABP element hide filters are allowed to contain space
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// characters
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if ( abpHideFilters !== null ) {
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if ( abpHideFilters.add(line) ) {
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continue;
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}
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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 || matches.length === 0 ) {
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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" !== "%s"', details.path, matches[0], line);
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continue;
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}
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line = matches[0];
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// Likely an ABP net filter?
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if ( reAdblockFilter.test(line) ) {
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if ( abpFilters !== null ) {
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if ( abpFilters.add(line) ) {
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continue;
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}
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}
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// rhill 2014-01-22: Transpose possible Adblock Plus-filter syntax
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// into a plain hostname if possible.
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matches = reAdblockHostFilter.exec(line);
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if ( !matches || matches.length < 2 ) {
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continue;
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}
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line = matches[1];
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}
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if ( line === '' ) {
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continue;
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}
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thisListCount++;
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if ( abpFilters.addAnyPartyHostname(line) ) {
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thisListUsedCount++;
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}
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}
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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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this.remoteBlacklists[details.path].entryCount = thisListCount;
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this.remoteBlacklists[details.path].entryUsedCount = thisListUsedCount;
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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) {
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var presetBlacklists = this.remoteBlacklists;
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// Toggle switches, if any
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if ( switches !== undefined ) {
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var i = switches.length;
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while ( i-- ) {
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if ( !presetBlacklists[switches[i].location] ) {
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continue;
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}
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presetBlacklists[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': presetBlacklists }, function() {
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µBlock.getBytesInUse();
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});
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}
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// Now force reload
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this.loadUbiquitousBlacklists();
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};
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/******************************************************************************/
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µBlock.loadPublicSuffixList = function() {
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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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};
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this.assets.get(
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'assets/thirdparties/publicsuffix.org/list/effective_tld_names.dat',
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applyPublicSuffixList
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);
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};
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/******************************************************************************/
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// Load updatable assets
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µBlock.loadUpdatableAssets = function() {
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this.loadUbiquitousBlacklists();
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this.loadPublicSuffixList();
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};
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/******************************************************************************/
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// Load all
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µBlock.load = function() {
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this.loadLocalSettings();
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this.loadUserSettings();
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// load updatable assets -- after updating them if needed
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this.assetUpdater.update(null, this.loadUpdatableAssets.bind(this));
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this.getBytesInUse();
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};
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