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mirror of https://github.com/gorhill/uBlock.git synced 2024-11-17 07:52:42 +01:00
uBlock/src/js/storage.js
Raymond Hill 72bb89495b
Change compiled list format to a saner block id management
Just use self-described readable section identifiers instead
of difficult-to-manage arbitrary integers.
2021-12-07 11:15:14 -05:00

1669 lines
56 KiB
JavaScript

/*******************************************************************************
uBlock Origin - a browser extension to block requests.
Copyright (C) 2014-present Raymond Hill
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see {http://www.gnu.org/licenses/}.
Home: https://github.com/gorhill/uBlock
*/
/* globals WebAssembly */
'use strict';
/******************************************************************************/
import publicSuffixList from '../lib/publicsuffixlist/publicsuffixlist.js';
import punycode from '../lib/punycode.js';
import cosmeticFilteringEngine from './cosmetic-filtering.js';
import io from './assets.js';
import logger from './logger.js';
import lz4Codec from './lz4.js';
import staticExtFilteringEngine from './static-ext-filtering.js';
import staticFilteringReverseLookup from './reverselookup.js';
import staticNetFilteringEngine from './static-net-filtering.js';
import µb from './background.js';
import { hostnameFromURI } from './uri-utils.js';
import { redirectEngine } from './redirect-engine.js';
import { sparseBase64 } from './base64-custom.js';
import { StaticFilteringParser } from './static-filtering-parser.js';
import { ubolog, ubologSet } from './console.js';
import {
permanentFirewall,
permanentSwitches,
permanentURLFiltering,
} from './filtering-engines.js';
import {
CompiledListReader,
CompiledListWriter,
} from './static-filtering-io.js';
import {
LineIterator,
orphanizeString,
} from './text-utils.js';
/******************************************************************************/
µb.getBytesInUse = async function() {
const promises = [];
let bytesInUse;
// Not all platforms implement this method.
promises.push(
vAPI.storage.getBytesInUse instanceof Function
? vAPI.storage.getBytesInUse(null)
: undefined
);
if (
navigator.storage instanceof Object &&
navigator.storage.estimate instanceof Function
) {
promises.push(navigator.storage.estimate());
}
const results = await Promise.all(promises);
const processCount = count => {
if ( typeof count !== 'number' ) { return; }
if ( bytesInUse === undefined ) { bytesInUse = 0; }
bytesInUse += count;
return bytesInUse;
};
processCount(results[0]);
if ( results.length > 1 && results[1] instanceof Object ) {
processCount(results[1].usage);
}
µb.storageUsed = bytesInUse;
return bytesInUse;
};
/******************************************************************************/
µb.saveLocalSettings = (( ) => {
const saveAfter = 4 * 60 * 1000;
const onTimeout = ( ) => {
if ( µb.localSettingsLastModified > µb.localSettingsLastSaved ) {
µb.saveLocalSettings();
}
vAPI.setTimeout(onTimeout, saveAfter);
};
vAPI.setTimeout(onTimeout, saveAfter);
return function() {
this.localSettingsLastSaved = Date.now();
return vAPI.storage.set(this.localSettings);
};
})();
/******************************************************************************/
µb.loadUserSettings = async function() {
const usDefault = this.userSettingsDefault;
const results = await Promise.all([
vAPI.storage.get(Object.assign(usDefault)),
vAPI.adminStorage.get('userSettings'),
]);
const usUser = results[0] instanceof Object && results[0] ||
Object.assign(usDefault);
if ( Array.isArray(results[1]) ) {
const adminSettings = results[1];
for ( const entry of adminSettings ) {
if ( entry.length < 1 ) { continue; }
const name = entry[0];
if ( usDefault.hasOwnProperty(name) === false ) { continue; }
const value = entry.length < 2
? usDefault[name]
: this.settingValueFromString(usDefault, name, entry[1]);
if ( value === undefined ) { continue; }
usUser[name] = usDefault[name] = value;
}
}
return usUser;
};
µb.saveUserSettings = function() {
// `externalLists` will be deprecated in some future, it is kept around
// for forward compatibility purpose, and should reflect the content of
// `importedLists`.
//
// https://github.com/uBlockOrigin/uBlock-issues/issues/1803
// Do this before computing modified settings.
this.userSettings.externalLists =
this.userSettings.importedLists.join('\n');
const toSave = this.getModifiedSettings(
this.userSettings,
this.userSettingsDefault
);
const toRemove = [];
for ( const key in this.userSettings ) {
if ( this.userSettings.hasOwnProperty(key) === false ) { continue; }
if ( toSave.hasOwnProperty(key) ) { continue; }
toRemove.push(key);
}
if ( toRemove.length !== 0 ) {
vAPI.storage.remove(toRemove);
}
vAPI.storage.set(toSave);
};
/******************************************************************************/
// Admin hidden settings have precedence over user hidden settings.
µb.loadHiddenSettings = async function() {
const hsDefault = this.hiddenSettingsDefault;
const hsAdmin = this.hiddenSettingsAdmin;
const hsUser = this.hiddenSettings;
const results = await Promise.all([
vAPI.adminStorage.get([
'advancedSettings',
'disableDashboard',
'disabledPopupPanelParts',
]),
vAPI.storage.get('hiddenSettings'),
]);
if ( results[0] instanceof Object ) {
const {
advancedSettings,
disableDashboard,
disabledPopupPanelParts
} = results[0];
if ( Array.isArray(advancedSettings) ) {
for ( const entry of advancedSettings ) {
if ( entry.length < 1 ) { continue; }
const name = entry[0];
if ( hsDefault.hasOwnProperty(name) === false ) { continue; }
const value = entry.length < 2
? hsDefault[name]
: this.hiddenSettingValueFromString(name, entry[1]);
if ( value === undefined ) { continue; }
hsDefault[name] = hsAdmin[name] = hsUser[name] = value;
}
}
µb.noDashboard = disableDashboard === true;
if ( Array.isArray(disabledPopupPanelParts) ) {
const partNameToBit = new Map([
[ 'globalStats', 0b00010 ],
[ 'basicTools', 0b00100 ],
[ 'extraTools', 0b01000 ],
[ 'overviewPane', 0b10000 ],
]);
let bits = hsDefault.popupPanelDisabledSections;
for ( const part of disabledPopupPanelParts ) {
const bit = partNameToBit.get(part);
if ( bit === undefined ) { continue; }
bits |= bit;
}
hsDefault.popupPanelDisabledSections =
hsAdmin.popupPanelDisabledSections =
hsUser.popupPanelDisabledSections = bits;
}
}
const hs = results[1] instanceof Object && results[1].hiddenSettings || {};
if ( Object.keys(hsAdmin).length === 0 && Object.keys(hs).length === 0 ) {
return;
}
for ( const key in hsDefault ) {
if ( hsDefault.hasOwnProperty(key) === false ) { continue; }
if ( hsAdmin.hasOwnProperty(name) ) { continue; }
if ( typeof hs[key] !== typeof hsDefault[key] ) { continue; }
this.hiddenSettings[key] = hs[key];
}
if ( typeof this.hiddenSettings.suspendTabsUntilReady === 'boolean' ) {
this.hiddenSettings.suspendTabsUntilReady =
this.hiddenSettings.suspendTabsUntilReady
? 'yes'
: 'unset';
}
this.fireDOMEvent('hiddenSettingsChanged');
};
// Note: Save only the settings which values differ from the default ones.
// This way the new default values in the future will properly apply for
// those which were not modified by the user.
µb.saveHiddenSettings = function() {
vAPI.storage.set({
hiddenSettings: this.getModifiedSettings(
this.hiddenSettings,
this.hiddenSettingsDefault
)
});
};
self.addEventListener('hiddenSettingsChanged', ( ) => {
const µbhs = µb.hiddenSettings;
ubologSet(µbhs.consoleLogLevel === 'info');
vAPI.net.setOptions({
cnameIgnoreList: µbhs.cnameIgnoreList,
cnameIgnore1stParty: µbhs.cnameIgnore1stParty,
cnameIgnoreExceptions: µbhs.cnameIgnoreExceptions,
cnameIgnoreRootDocument: µbhs.cnameIgnoreRootDocument,
cnameMaxTTL: µbhs.cnameMaxTTL,
cnameReplayFullURL: µbhs.cnameReplayFullURL,
cnameUncloakProxied: µbhs.cnameUncloakProxied,
});
});
/******************************************************************************/
µb.hiddenSettingsFromString = function(raw) {
const out = Object.assign({}, this.hiddenSettingsDefault);
const lineIter = new LineIterator(raw);
while ( lineIter.eot() === false ) {
const line = lineIter.next();
const matches = /^\s*(\S+)\s+(.+)$/.exec(line);
if ( matches === null || matches.length !== 3 ) { continue; }
const name = matches[1];
if ( out.hasOwnProperty(name) === false ) { continue; }
if ( this.hiddenSettingsAdmin.hasOwnProperty(name) ) { continue; }
const value = this.hiddenSettingValueFromString(name, matches[2]);
if ( value !== undefined ) {
out[name] = value;
}
}
return out;
};
µb.hiddenSettingValueFromString = function(name, value) {
if ( typeof name !== 'string' || typeof value !== 'string' ) { return; }
const hsDefault = this.hiddenSettingsDefault;
if ( hsDefault.hasOwnProperty(name) === false ) { return; }
let r;
switch ( typeof hsDefault[name] ) {
case 'boolean':
if ( value === 'true' ) {
r = true;
} else if ( value === 'false' ) {
r = false;
}
break;
case 'string':
r = value.trim();
break;
case 'number':
if ( value.startsWith('0b') ) {
r = parseInt(value.slice(2), 2);
} else if ( value.startsWith('0x') ) {
r = parseInt(value.slice(2), 16);
} else {
r = parseInt(value, 10);
}
if ( isNaN(r) ) { r = undefined; }
break;
default:
break;
}
return r;
};
µb.stringFromHiddenSettings = function() {
const out = [];
for ( const key of Object.keys(this.hiddenSettings).sort() ) {
out.push(key + ' ' + this.hiddenSettings[key]);
}
return out.join('\n');
};
/******************************************************************************/
µb.savePermanentFirewallRules = function() {
vAPI.storage.set({
dynamicFilteringString: permanentFirewall.toString()
});
};
/******************************************************************************/
µb.savePermanentURLFilteringRules = function() {
vAPI.storage.set({
urlFilteringString: permanentURLFiltering.toString()
});
};
/******************************************************************************/
µb.saveHostnameSwitches = function() {
vAPI.storage.set({
hostnameSwitchesString: permanentSwitches.toString()
});
};
/******************************************************************************/
µb.saveWhitelist = function() {
vAPI.storage.set({
netWhitelist: this.arrayFromWhitelist(this.netWhitelist)
});
this.netWhitelistModifyTime = Date.now();
};
/******************************************************************************/
µb.loadSelectedFilterLists = async function() {
const bin = await vAPI.storage.get('selectedFilterLists');
if ( bin instanceof Object && Array.isArray(bin.selectedFilterLists) ) {
this.selectedFilterLists = bin.selectedFilterLists;
return;
}
// https://github.com/gorhill/uBlock/issues/747
// Select default filter lists if first-time launch.
const lists = await io.metadata();
this.saveSelectedFilterLists(this.autoSelectRegionalFilterLists(lists));
};
µb.saveSelectedFilterLists = function(newKeys, append = false) {
const oldKeys = this.selectedFilterLists.slice();
if ( append ) {
newKeys = newKeys.concat(oldKeys);
}
const newSet = new Set(newKeys);
// Purge unused filter lists from cache.
for ( const oldKey of oldKeys ) {
if ( newSet.has(oldKey) === false ) {
this.removeFilterList(oldKey);
}
}
newKeys = Array.from(newSet);
this.selectedFilterLists = newKeys;
return vAPI.storage.set({ selectedFilterLists: newKeys });
};
/******************************************************************************/
µb.applyFilterListSelection = function(details) {
let selectedListKeySet = new Set(this.selectedFilterLists);
let importedLists = this.userSettings.importedLists.slice();
// Filter lists to select
if ( Array.isArray(details.toSelect) ) {
if ( details.merge ) {
for ( let i = 0, n = details.toSelect.length; i < n; i++ ) {
selectedListKeySet.add(details.toSelect[i]);
}
} else {
selectedListKeySet = new Set(details.toSelect);
}
}
// Imported filter lists to remove
if ( Array.isArray(details.toRemove) ) {
for ( let i = 0, n = details.toRemove.length; i < n; i++ ) {
const assetKey = details.toRemove[i];
selectedListKeySet.delete(assetKey);
const pos = importedLists.indexOf(assetKey);
if ( pos !== -1 ) {
importedLists.splice(pos, 1);
}
this.removeFilterList(assetKey);
}
}
// Filter lists to import
if ( typeof details.toImport === 'string' ) {
// https://github.com/gorhill/uBlock/issues/1181
// Try mapping the URL of an imported filter list to the assetKey
// of an existing stock list.
const assetKeyFromURL = url => {
const needle = url.replace(/^https?:/, '');
const assets = this.availableFilterLists;
for ( const assetKey in assets ) {
const asset = assets[assetKey];
if ( asset.content !== 'filters' ) { continue; }
if ( typeof asset.contentURL === 'string' ) {
if ( asset.contentURL.endsWith(needle) ) { return assetKey; }
continue;
}
if ( Array.isArray(asset.contentURL) === false ) { continue; }
for ( let i = 0, n = asset.contentURL.length; i < n; i++ ) {
if ( asset.contentURL[i].endsWith(needle) ) {
return assetKey;
}
}
}
return url;
};
const importedSet = new Set(this.listKeysFromCustomFilterLists(importedLists));
const toImportSet = new Set(this.listKeysFromCustomFilterLists(details.toImport));
for ( const urlKey of toImportSet ) {
if ( importedSet.has(urlKey) ) {
selectedListKeySet.add(urlKey);
continue;
}
const assetKey = assetKeyFromURL(urlKey);
if ( assetKey === urlKey ) {
importedSet.add(urlKey);
}
selectedListKeySet.add(assetKey);
}
importedLists = Array.from(importedSet).sort();
}
const result = Array.from(selectedListKeySet);
if ( importedLists.join() !== this.userSettings.importedLists.join() ) {
this.userSettings.importedLists = importedLists;
this.saveUserSettings();
}
this.saveSelectedFilterLists(result);
};
/******************************************************************************/
µb.listKeysFromCustomFilterLists = function(raw) {
const urls = typeof raw === 'string'
? raw.trim().split(/[\n\r]+/)
: raw;
const out = new Set();
const reIgnore = /^[!#]/;
const reValid = /^[a-z-]+:\/\/\S+/;
for ( const url of urls ) {
if ( reIgnore.test(url) || !reValid.test(url) ) { continue; }
// Ignore really bad lists.
if ( this.badLists.get(url) === true ) { continue; }
out.add(url);
}
return Array.from(out);
};
/******************************************************************************/
µb.saveUserFilters = function(content) {
// https://github.com/gorhill/uBlock/issues/1022
// Be sure to end with an empty line.
content = content.trim();
if ( content !== '' ) { content += '\n'; }
this.removeCompiledFilterList(this.userFiltersPath);
return io.put(this.userFiltersPath, content);
};
µb.loadUserFilters = function() {
return io.get(this.userFiltersPath);
};
µb.appendUserFilters = async function(filters, options) {
filters = filters.trim();
if ( filters.length === 0 ) { return; }
// https://github.com/uBlockOrigin/uBlock-issues/issues/372
// Auto comment using user-defined template.
let comment = '';
if (
options instanceof Object &&
options.autoComment === true &&
this.hiddenSettings.autoCommentFilterTemplate.indexOf('{{') !== -1
) {
const d = new Date();
// Date in YYYY-MM-DD format - https://stackoverflow.com/a/50130338
const ISO8061Date = new Date(d.getTime() +
(d.getTimezoneOffset()*60000)).toISOString().split('T')[0];
const url = new URL(options.docURL);
comment =
'! ' +
this.hiddenSettings.autoCommentFilterTemplate
.replace('{{date}}', ISO8061Date)
.replace('{{time}}', d.toLocaleTimeString())
.replace('{{hostname}}', url.hostname)
.replace('{{origin}}', url.origin)
.replace('{{url}}', url.href);
}
const details = await this.loadUserFilters();
if ( details.error ) { return; }
// The comment, if any, will be applied if and only if it is different
// from the last comment found in the user filter list.
if ( comment !== '' ) {
const beg = details.content.lastIndexOf(comment);
const end = beg === -1 ? -1 : beg + comment.length;
if (
end === -1 ||
details.content.startsWith('\n', end) === false ||
details.content.includes('\n!', end)
) {
filters = '\n' + comment + '\n' + filters;
}
}
// https://github.com/chrisaljoudi/uBlock/issues/976
// If we reached this point, the filter quite probably needs to be
// added for sure: do not try to be too smart, trying to avoid
// duplicates at this point may lead to more issues.
await this.saveUserFilters(details.content.trim() + '\n' + filters);
const compiledFilters = this.compileFilters(filters, {
assetKey: this.userFiltersPath
});
const snfe = staticNetFilteringEngine;
const cfe = cosmeticFilteringEngine;
const acceptedCount = snfe.acceptedCount + cfe.acceptedCount;
const discardedCount = snfe.discardedCount + cfe.discardedCount;
this.applyCompiledFilters(compiledFilters, true);
const entry = this.availableFilterLists[this.userFiltersPath];
const deltaEntryCount =
snfe.acceptedCount +
cfe.acceptedCount - acceptedCount;
const deltaEntryUsedCount =
deltaEntryCount -
(snfe.discardedCount + cfe.discardedCount - discardedCount);
entry.entryCount += deltaEntryCount;
entry.entryUsedCount += deltaEntryUsedCount;
vAPI.storage.set({ 'availableFilterLists': this.availableFilterLists });
staticNetFilteringEngine.freeze();
redirectEngine.freeze();
staticExtFilteringEngine.freeze();
this.selfieManager.destroy();
// https://www.reddit.com/r/uBlockOrigin/comments/cj7g7m/
// https://www.reddit.com/r/uBlockOrigin/comments/cnq0bi/
if ( options.killCache ) {
browser.webRequest.handlerBehaviorChanged();
}
vAPI.messaging.broadcast({ what: 'userFiltersUpdated' });
};
µb.createUserFilters = function(details) {
this.appendUserFilters(details.filters, details);
// https://github.com/gorhill/uBlock/issues/1786
if ( details.docURL === undefined ) { return; }
cosmeticFilteringEngine.removeFromSelectorCache(
hostnameFromURI(details.docURL)
);
};
/******************************************************************************/
µb.autoSelectRegionalFilterLists = function(lists) {
const selectedListKeys = [ this.userFiltersPath ];
for ( const key in lists ) {
if ( lists.hasOwnProperty(key) === false ) { continue; }
const list = lists[key];
if ( list.off !== true ) {
selectedListKeys.push(key);
continue;
}
if ( this.listMatchesEnvironment(list) ) {
selectedListKeys.push(key);
list.off = false;
}
}
return selectedListKeys;
};
/******************************************************************************/
µb.getAvailableLists = async function() {
let oldAvailableLists = {},
newAvailableLists = {};
// User filter list.
newAvailableLists[this.userFiltersPath] = {
group: 'user',
title: vAPI.i18n('1pPageName')
};
// Custom filter lists.
const importedListKeys = this.listKeysFromCustomFilterLists(
this.userSettings.importedLists
);
for ( const listKey of importedListKeys ) {
const entry = {
content: 'filters',
contentURL: listKey,
external: true,
group: 'custom',
submitter: 'user',
title: '',
};
newAvailableLists[listKey] = entry;
io.registerAssetSource(listKey, entry);
}
// Convert a no longer existing stock list into an imported list.
const customListFromStockList = assetKey => {
const oldEntry = oldAvailableLists[assetKey];
if ( oldEntry === undefined || oldEntry.off === true ) { return; }
let listURL = oldEntry.contentURL;
if ( Array.isArray(listURL) ) {
listURL = listURL[0];
}
const newEntry = {
content: 'filters',
contentURL: listURL,
external: true,
group: 'custom',
submitter: 'user',
title: oldEntry.title || ''
};
newAvailableLists[listURL] = newEntry;
io.registerAssetSource(listURL, newEntry);
importedListKeys.push(listURL);
this.userSettings.importedLists.push(listURL.trim());
this.saveUserSettings();
this.saveSelectedFilterLists([ listURL ], true);
};
const promises = [
vAPI.storage.get('availableFilterLists'),
io.metadata(),
this.badLists.size === 0 ? io.get('ublock-badlists') : false,
];
// Load previously saved available lists -- these contains data
// computed at run-time, we will reuse this data if possible.
const [ bin, entries, badlists ] = await Promise.all(promises);
if ( badlists instanceof Object ) {
for ( const line of badlists.content.split(/\s*[\n\r]+\s*/) ) {
if ( line === '' || line.startsWith('#') ) { continue; }
const fields = line.split(/\s+/);
const remove = fields.length === 2;
this.badLists.set(fields[0], remove);
}
}
oldAvailableLists = bin && bin.availableFilterLists || {};
for ( const assetKey in entries ) {
if ( entries.hasOwnProperty(assetKey) === false ) { continue; }
const entry = entries[assetKey];
if ( entry.content !== 'filters' ) { continue; }
newAvailableLists[assetKey] = Object.assign({}, entry);
}
// Load set of currently selected filter lists.
const listKeySet = new Set(this.selectedFilterLists);
for ( const listKey in newAvailableLists ) {
if ( newAvailableLists.hasOwnProperty(listKey) ) {
newAvailableLists[listKey].off = !listKeySet.has(listKey);
}
}
//finalize();
// Final steps:
// - reuse existing list metadata if any;
// - unregister unreferenced imported filter lists if any.
// Reuse existing metadata.
for ( const assetKey in oldAvailableLists ) {
const oldEntry = oldAvailableLists[assetKey];
const newEntry = newAvailableLists[assetKey];
// List no longer exists. If a stock list, try to convert to
// imported list if it was selected.
if ( newEntry === undefined ) {
this.removeFilterList(assetKey);
if ( assetKey.indexOf('://') === -1 ) {
customListFromStockList(assetKey);
}
continue;
}
if ( oldEntry.entryCount !== undefined ) {
newEntry.entryCount = oldEntry.entryCount;
}
if ( oldEntry.entryUsedCount !== undefined ) {
newEntry.entryUsedCount = oldEntry.entryUsedCount;
}
// This may happen if the list name was pulled from the list
// content.
// https://github.com/chrisaljoudi/uBlock/issues/982
// There is no guarantee the title was successfully extracted from
// the list content.
if (
newEntry.title === '' &&
typeof oldEntry.title === 'string' &&
oldEntry.title !== ''
) {
newEntry.title = oldEntry.title;
}
}
// Remove unreferenced imported filter lists.
for ( const assetKey in newAvailableLists ) {
const newEntry = newAvailableLists[assetKey];
if ( newEntry.submitter !== 'user' ) { continue; }
if ( importedListKeys.indexOf(assetKey) !== -1 ) { continue; }
delete newAvailableLists[assetKey];
io.unregisterAssetSource(assetKey);
this.removeFilterList(assetKey);
}
return newAvailableLists;
};
/******************************************************************************/
µb.loadFilterLists = (( ) => {
const loadedListKeys = [];
let loadingPromise;
let t0 = 0;
const onDone = function() {
ubolog(`loadFilterLists() took ${Date.now()-t0} ms`);
staticNetFilteringEngine.freeze();
staticExtFilteringEngine.freeze();
redirectEngine.freeze();
vAPI.net.unsuspend();
vAPI.storage.set({ 'availableFilterLists': this.availableFilterLists });
vAPI.messaging.broadcast({
what: 'staticFilteringDataChanged',
parseCosmeticFilters: this.userSettings.parseAllABPHideFilters,
ignoreGenericCosmeticFilters: this.userSettings.ignoreGenericCosmeticFilters,
listKeys: loadedListKeys
});
this.selfieManager.destroy();
lz4Codec.relinquish();
this.compiledFormatChanged = false;
loadingPromise = undefined;
};
const applyCompiledFilters = function(assetKey, compiled) {
const snfe = staticNetFilteringEngine;
const sxfe = staticExtFilteringEngine;
let acceptedCount = snfe.acceptedCount + sxfe.acceptedCount,
discardedCount = snfe.discardedCount + sxfe.discardedCount;
this.applyCompiledFilters(compiled, assetKey === this.userFiltersPath);
if ( this.availableFilterLists.hasOwnProperty(assetKey) ) {
const entry = this.availableFilterLists[assetKey];
entry.entryCount = snfe.acceptedCount + sxfe.acceptedCount -
acceptedCount;
entry.entryUsedCount = entry.entryCount -
(snfe.discardedCount + sxfe.discardedCount - discardedCount);
}
loadedListKeys.push(assetKey);
};
const onFilterListsReady = function(lists) {
this.availableFilterLists = lists;
vAPI.net.suspend();
redirectEngine.reset();
staticExtFilteringEngine.reset();
staticNetFilteringEngine.reset();
this.selfieManager.destroy();
staticFilteringReverseLookup.resetLists();
// We need to build a complete list of assets to pull first: this is
// because it *may* happens that some load operations are synchronous:
// This happens for assets which do not exist, or assets with no
// content.
const toLoad = [];
for ( const assetKey in lists ) {
if ( lists.hasOwnProperty(assetKey) === false ) { continue; }
if ( lists[assetKey].off ) { continue; }
toLoad.push(
this.getCompiledFilterList(assetKey).then(details => {
applyCompiledFilters.call(
this,
details.assetKey,
details.content
);
})
);
}
return Promise.all(toLoad);
};
return function() {
if ( loadingPromise instanceof Promise === false ) {
t0 = Date.now();
loadedListKeys.length = 0;
loadingPromise = Promise.all([
this.getAvailableLists().then(lists =>
onFilterListsReady.call(this, lists)
),
this.loadRedirectResources(),
]).then(( ) => {
onDone.call(this);
});
}
return loadingPromise;
};
})();
/******************************************************************************/
µb.getCompiledFilterList = async function(assetKey) {
const compiledPath = 'compiled/' + assetKey;
// https://github.com/uBlockOrigin/uBlock-issues/issues/1365
// Verify that the list version matches that of the current compiled
// format.
if (
this.compiledFormatChanged === false &&
this.badLists.has(assetKey) === false
) {
const compiledDetails = await io.get(compiledPath);
const compilerVersion = `${this.systemSettings.compiledMagic}\n`;
if ( compiledDetails.content.startsWith(compilerVersion) ) {
compiledDetails.assetKey = assetKey;
return compiledDetails;
}
}
// Skip downloading really bad lists.
if ( this.badLists.get(assetKey) ) {
return { assetKey, content: '' };
}
const rawDetails = await io.get(assetKey, { silent: true });
// Compiling an empty string results in an empty string.
if ( rawDetails.content === '' ) {
rawDetails.assetKey = assetKey;
return rawDetails;
}
this.extractFilterListMetadata(assetKey, rawDetails.content);
// Skip compiling bad lists.
if ( this.badLists.has(assetKey) ) {
return { assetKey, content: '' };
}
const compiledContent =
this.compileFilters(rawDetails.content, { assetKey });
io.put(compiledPath, compiledContent);
return { assetKey, content: compiledContent };
};
/******************************************************************************/
// https://github.com/gorhill/uBlock/issues/3406
// Lower minimum update period to 1 day.
µb.extractFilterListMetadata = function(assetKey, raw) {
const listEntry = this.availableFilterLists[assetKey];
if ( listEntry === undefined ) { return; }
// Metadata expected to be found at the top of content.
const head = raw.slice(0, 1024);
// https://github.com/gorhill/uBlock/issues/313
// Always try to fetch the name if this is an external filter list.
if ( listEntry.group === 'custom' ) {
let matches = head.match(/(?:^|\n)(?:!|# )[\t ]*Title[\t ]*:([^\n]+)/i);
const title = matches && matches[1].trim() || '';
if ( title !== '' && title !== listEntry.title ) {
listEntry.title = orphanizeString(title);
io.registerAssetSource(assetKey, { title });
}
matches = head.match(/(?:^|\n)(?:!|# )[\t ]*Homepage[\t ]*:[\t ]*(https?:\/\/\S+)\s/i);
const supportURL = matches && matches[1] || '';
if ( supportURL !== '' && supportURL !== listEntry.supportURL ) {
listEntry.supportURL = orphanizeString(supportURL);
io.registerAssetSource(assetKey, { supportURL });
}
}
// Extract update frequency information
const matches = head.match(/(?:^|\n)(?:!|# )[\t ]*Expires[\t ]*:[\t ]*(\d+)[\t ]*(h)?/i);
if ( matches !== null ) {
let updateAfter = parseInt(matches[1], 10);
if ( isNaN(updateAfter) === false ) {
if ( matches[2] !== undefined ) {
updateAfter = Math.ceil(updateAfter / 24);
}
updateAfter = Math.max(updateAfter, 1);
if ( updateAfter !== listEntry.updateAfter ) {
listEntry.updateAfter = updateAfter;
io.registerAssetSource(assetKey, { updateAfter });
}
}
}
};
/******************************************************************************/
µb.removeCompiledFilterList = function(assetKey) {
io.remove('compiled/' + assetKey);
};
µb.removeFilterList = function(assetKey) {
this.removeCompiledFilterList(assetKey);
io.remove(assetKey);
};
/******************************************************************************/
µb.compileFilters = function(rawText, details = {}) {
const writer = new CompiledListWriter();
// Populate the writer with information potentially useful to the
// client compilers.
if ( details.assetKey ) {
writer.properties.set('name', details.assetKey);
}
const expertMode =
details.assetKey !== this.userFiltersPath ||
this.hiddenSettings.filterAuthorMode !== false;
// Useful references:
// https://adblockplus.org/en/filter-cheatsheet
// https://adblockplus.org/en/filters
const lineIter = new LineIterator(this.preparseDirectives.prune(rawText));
const parser = new StaticFilteringParser({ expertMode });
const compiler = staticNetFilteringEngine.createCompiler(parser);
parser.setMaxTokenLength(staticNetFilteringEngine.MAX_TOKEN_LENGTH);
compiler.start(writer);
while ( lineIter.eot() === false ) {
let line = lineIter.next();
while ( line.endsWith(' \\') ) {
if ( lineIter.peek(4) !== ' ' ) { break; }
line = line.slice(0, -2).trim() + lineIter.next().trim();
}
parser.analyze(line);
if ( parser.shouldIgnore() ) { continue; }
if ( parser.category === parser.CATStaticExtFilter ) {
staticExtFilteringEngine.compile(parser, writer);
continue;
}
if ( parser.category !== parser.CATStaticNetFilter ) { continue; }
// https://github.com/gorhill/uBlock/issues/2599
// convert hostname to punycode if needed
if ( parser.patternHasUnicode() && parser.toASCII() === false ) {
continue;
}
if ( compiler.compile(writer) ) { continue; }
if ( compiler.error !== undefined ) {
logger.writeOne({
realm: 'message',
type: 'error',
text: compiler.error
});
}
}
compiler.finish(writer);
// https://github.com/uBlockOrigin/uBlock-issues/issues/1365
// Embed version into compiled list itself: it is encoded in as the
// first digits followed by a whitespace.
const compiledContent
= `${this.systemSettings.compiledMagic}\n` + writer.toString();
return compiledContent;
};
/******************************************************************************/
// https://github.com/gorhill/uBlock/issues/1395
// Added `firstparty` argument: to avoid discarding cosmetic filters when
// applying 1st-party filters.
µb.applyCompiledFilters = function(rawText, firstparty) {
if ( rawText === '' ) { return; }
const reader = new CompiledListReader(rawText);
staticNetFilteringEngine.fromCompiled(reader);
staticExtFilteringEngine.fromCompiledContent(reader, {
skipGenericCosmetic: this.userSettings.ignoreGenericCosmeticFilters,
skipCosmetic: !firstparty && !this.userSettings.parseAllABPHideFilters
});
};
/******************************************************************************/
// https://github.com/AdguardTeam/AdguardBrowserExtension/issues/917
µb.preparseDirectives = {
// This method returns an array of indices, corresponding to position in
// the content string which should alternatively be parsed and discarded.
split: function(content) {
const reIf = /^!#(if|endif)\b([^\n]*)(?:[\n\r]+|$)/gm;
const soup = vAPI.webextFlavor.soup;
const stack = [];
const shouldDiscard = ( ) => stack.some(v => v);
const parts = [ 0 ];
let discard = false;
for (;;) {
const match = reIf.exec(content);
if ( match === null ) { break; }
switch ( match[1] ) {
case 'if':
let expr = match[2].trim();
const target = expr.charCodeAt(0) === 0x21 /* '!' */;
if ( target ) { expr = expr.slice(1); }
const token = this.tokens.get(expr);
const startDiscard =
token === 'false' && target === false ||
token !== undefined && soup.has(token) === target;
if ( discard === false && startDiscard ) {
parts.push(match.index);
discard = true;
}
stack.push(startDiscard);
break;
case 'endif':
stack.pop();
const stopDiscard = shouldDiscard() === false;
if ( discard && stopDiscard ) {
parts.push(match.index + match[0].length);
discard = false;
}
break;
default:
break;
}
}
parts.push(content.length);
return parts;
},
prune: function(content) {
const parts = this.split(content);
const out = [];
for ( let i = 0, n = parts.length - 1; i < n; i += 2 ) {
const beg = parts[i+0];
const end = parts[i+1];
out.push(content.slice(beg, end));
}
return out.join('\n');
},
getHints: function() {
const out = [];
const vals = new Set();
for ( const [ key, val ] of this.tokens ) {
if ( vals.has(val) ) { continue; }
vals.add(val);
out.push(key);
}
return out;
},
getTokens: function() {
const out = new Map();
const soup = vAPI.webextFlavor.soup;
for ( const [ key, val ] of this.tokens ) {
out.set(key, val !== 'false' && soup.has(val));
}
return Array.from(out);
},
tokens: new Map([
[ 'ext_ublock', 'ublock' ],
[ 'env_chromium', 'chromium' ],
[ 'env_edge', 'edge' ],
[ 'env_firefox', 'firefox' ],
[ 'env_legacy', 'legacy' ],
[ 'env_mobile', 'mobile' ],
[ 'env_safari', 'safari' ],
[ 'cap_html_filtering', 'html_filtering' ],
[ 'cap_user_stylesheet', 'user_stylesheet' ],
[ 'false', 'false' ],
// Hoping ABP-only list maintainers can at least make use of it to
// help non-ABP content blockers better deal with filters benefiting
// only ABP.
[ 'ext_abp', 'false' ],
// Compatibility with other blockers
// https://kb.adguard.com/en/general/how-to-create-your-own-ad-filters#adguard-specific
[ 'adguard', 'adguard' ],
[ 'adguard_app_android', 'false' ],
[ 'adguard_app_ios', 'false' ],
[ 'adguard_app_mac', 'false' ],
[ 'adguard_app_windows', 'false' ],
[ 'adguard_ext_android_cb', 'false' ],
[ 'adguard_ext_chromium', 'chromium' ],
[ 'adguard_ext_edge', 'edge' ],
[ 'adguard_ext_firefox', 'firefox' ],
[ 'adguard_ext_opera', 'chromium' ],
[ 'adguard_ext_safari', 'false' ],
]),
};
/******************************************************************************/
µb.loadRedirectResources = async function() {
try {
const success = await redirectEngine.resourcesFromSelfie(io);
if ( success === true ) { return true; }
const fetcher = (path, options = undefined) => {
if ( path.startsWith('/web_accessible_resources/') ) {
path += `?secret=${vAPI.warSecret()}`;
return io.fetch(path, options);
}
return io.fetchText(path);
};
const fetchPromises = [
redirectEngine.loadBuiltinResources(fetcher)
];
const userResourcesLocation = this.hiddenSettings.userResourcesLocation;
if ( userResourcesLocation !== 'unset' ) {
for ( const url of userResourcesLocation.split(/\s+/) ) {
fetchPromises.push(io.fetchText(url));
}
}
const results = await Promise.all(fetchPromises);
if ( Array.isArray(results) === false ) { return results; }
let content = '';
for ( let i = 1; i < results.length; i++ ) {
const result = results[i];
if (
result instanceof Object === false ||
typeof result.content !== 'string' ||
result.content === ''
) {
continue;
}
content += '\n\n' + result.content;
}
redirectEngine.resourcesFromString(content);
redirectEngine.selfieFromResources(io);
} catch(ex) {
ubolog(ex);
return false;
}
return true;
};
/******************************************************************************/
µb.loadPublicSuffixList = async function() {
const psl = publicSuffixList;
// WASM is nice but not critical
if ( vAPI.canWASM && this.hiddenSettings.disableWebAssembly !== true ) {
const wasmModuleFetcher = function(path) {
return fetch( `${path}.wasm`, {
mode: 'same-origin'
}).then(
WebAssembly.compileStreaming
).catch(reason => {
ubolog(reason);
});
};
let result = false;
try {
result = await psl.enableWASM(wasmModuleFetcher,
'./lib/publicsuffixlist/wasm/'
);
} catch(reason) {
ubolog(reason);
}
if ( result ) {
ubolog(`WASM PSL ready ${Date.now()-vAPI.T0} ms after launch`);
}
}
try {
const result = await io.get(`compiled/${this.pslAssetKey}`);
if ( psl.fromSelfie(result.content, sparseBase64) ) { return; }
} catch (reason) {
ubolog(reason);
}
const result = await io.get(this.pslAssetKey);
if ( result.content !== '' ) {
this.compilePublicSuffixList(result.content);
}
};
µb.compilePublicSuffixList = function(content) {
const psl = publicSuffixList;
psl.parse(content, punycode.toASCII);
io.put(`compiled/${this.pslAssetKey}`, psl.toSelfie(sparseBase64));
};
/******************************************************************************/
// This is to be sure the selfie is generated in a sane manner: the selfie will
// be generated if the user doesn't change his filter lists selection for
// some set time.
µb.selfieManager = (( ) => {
let createTimer;
let destroyTimer;
// As of 2018-05-31:
// JSON.stringify-ing ourselves results in a better baseline
// memory usage at selfie-load time. For some reasons.
const create = async function() {
await Promise.all([
io.put(
'selfie/main',
JSON.stringify({
magic: µb.systemSettings.selfieMagic,
availableFilterLists: µb.availableFilterLists,
})
),
redirectEngine.toSelfie('selfie/redirectEngine'),
staticExtFilteringEngine.toSelfie(
'selfie/staticExtFilteringEngine'
),
staticNetFilteringEngine.toSelfie(io,
'selfie/staticNetFilteringEngine'
),
]);
lz4Codec.relinquish();
µb.selfieIsInvalid = false;
};
const loadMain = async function() {
const details = await io.get('selfie/main');
if (
details instanceof Object === false ||
typeof details.content !== 'string' ||
details.content === ''
) {
return false;
}
let selfie;
try {
selfie = JSON.parse(details.content);
} catch(ex) {
}
if (
selfie instanceof Object === false ||
selfie.magic !== µb.systemSettings.selfieMagic
) {
return false;
}
µb.availableFilterLists = selfie.availableFilterLists;
return true;
};
const load = async function() {
if ( µb.selfieIsInvalid ) {
return false;
}
try {
const results = await Promise.all([
loadMain(),
redirectEngine.fromSelfie('selfie/redirectEngine'),
staticExtFilteringEngine.fromSelfie(
'selfie/staticExtFilteringEngine'
),
staticNetFilteringEngine.fromSelfie(io,
'selfie/staticNetFilteringEngine'
),
]);
if ( results.every(v => v) ) {
return µb.loadRedirectResources();
}
}
catch (reason) {
ubolog(reason);
}
destroy();
return false;
};
const destroy = function() {
io.remove(/^selfie\//);
µb.selfieIsInvalid = true;
createTimer = vAPI.setTimeout(( ) => {
createTimer = undefined;
create();
}, µb.hiddenSettings.selfieAfter * 60000);
};
const destroyAsync = function() {
if ( destroyTimer !== undefined ) { return; }
if ( createTimer !== undefined ) {
clearTimeout(createTimer);
createTimer = undefined;
}
destroyTimer = vAPI.setTimeout(
( ) => {
destroyTimer = undefined;
destroy();
},
1019
);
µb.selfieIsInvalid = true;
};
return { load, destroy: destroyAsync };
})();
/******************************************************************************/
// https://github.com/gorhill/uBlock/issues/531
// Overwrite user settings with admin settings if present.
//
// Admin settings match layout of a uBlock backup. Not all data is
// necessarily present, i.e. administrators may removed entries which
// values are left to the user's choice.
µb.restoreAdminSettings = async function() {
let toOverwrite = {};
let data;
try {
const store = await vAPI.adminStorage.get([
'adminSettings',
'toOverwrite',
]) || {};
if ( store.toOverwrite instanceof Object ) {
toOverwrite = store.toOverwrite;
}
const json = store.adminSettings;
if ( typeof json === 'string' && json !== '' ) {
data = JSON.parse(json);
} else if ( json instanceof Object ) {
data = json;
}
} catch (ex) {
console.error(ex);
}
if ( data instanceof Object === false ) { data = {}; }
const bin = {};
let binNotEmpty = false;
// https://github.com/uBlockOrigin/uBlock-issues/issues/666
// Allows an admin to set their own 'assets.json' file, with their
// own set of stock assets.
if (
typeof data.assetsBootstrapLocation === 'string' &&
data.assetsBootstrapLocation !== ''
) {
µb.assetsBootstrapLocation = data.assetsBootstrapLocation;
}
if ( typeof data.userSettings === 'object' ) {
const µbus = this.userSettings;
const adminus = data.userSettings;
for ( const name in µbus ) {
if ( µbus.hasOwnProperty(name) === false ) { continue; }
if ( adminus.hasOwnProperty(name) === false ) { continue; }
bin[name] = adminus[name];
binNotEmpty = true;
}
}
// 'selectedFilterLists' is an array of filter list tokens. Each token
// is a reference to an asset in 'assets.json', or a URL for lists not
// present in 'assets.json'.
if (
Array.isArray(toOverwrite.filterLists) &&
toOverwrite.filterLists.length !== 0
) {
const importedLists = [];
for ( const list of toOverwrite.filterLists ) {
if ( /^[a-z-]+:\/\//.test(list) === false ) { continue; }
importedLists.push(list);
}
if ( importedLists.length !== 0 ) {
bin.importedLists = importedLists;
bin.externalLists = importedLists.join('\n');
}
bin.selectedFilterLists = toOverwrite.filterLists;
binNotEmpty = true;
} else if ( Array.isArray(data.selectedFilterLists) ) {
bin.selectedFilterLists = data.selectedFilterLists;
binNotEmpty = true;
}
if (
Array.isArray(toOverwrite.trustedSiteDirectives) &&
toOverwrite.trustedSiteDirectives.length !== 0
) {
µb.netWhitelistDefault = toOverwrite.trustedSiteDirectives.slice();
bin.netWhitelist = toOverwrite.trustedSiteDirectives.slice();
binNotEmpty = true;
} else if ( Array.isArray(data.whitelist) ) {
bin.netWhitelist = data.whitelist;
binNotEmpty = true;
} else if ( typeof data.netWhitelist === 'string' ) {
bin.netWhitelist = data.netWhitelist.split('\n');
binNotEmpty = true;
}
if ( typeof data.dynamicFilteringString === 'string' ) {
bin.dynamicFilteringString = data.dynamicFilteringString;
binNotEmpty = true;
}
if ( typeof data.urlFilteringString === 'string' ) {
bin.urlFilteringString = data.urlFilteringString;
binNotEmpty = true;
}
if ( typeof data.hostnameSwitchesString === 'string' ) {
bin.hostnameSwitchesString = data.hostnameSwitchesString;
binNotEmpty = true;
}
if ( binNotEmpty ) {
vAPI.storage.set(bin);
}
if (
Array.isArray(toOverwrite.filters) &&
toOverwrite.filters.length !== 0
) {
this.saveUserFilters(toOverwrite.filters.join('\n'));
} else if ( typeof data.userFilters === 'string' ) {
this.saveUserFilters(data.userFilters);
}
};
/******************************************************************************/
// https://github.com/gorhill/uBlock/issues/2344
// Support mutliple locales per filter list.
// https://github.com/gorhill/uBlock/issues/3210
// Support ability to auto-enable a filter list based on user agent.
// https://github.com/gorhill/uBlock/pull/3860
// Get current language using extensions API (instead of `navigator.language`)
µb.listMatchesEnvironment = function(details) {
// Matches language?
if ( typeof details.lang === 'string' ) {
let re = this.listMatchesEnvironment.reLang;
if ( re === undefined ) {
const match = /^[a-z]+/.exec(browser.i18n.getUILanguage());
if ( match !== null ) {
re = new RegExp('\\b' + match[0] + '\\b');
this.listMatchesEnvironment.reLang = re;
}
}
if ( re !== undefined && re.test(details.lang) ) { return true; }
}
// Matches user agent?
if ( typeof details.ua === 'string' ) {
let re = new RegExp('\\b' + this.escapeRegex(details.ua) + '\\b', 'i');
if ( re.test(self.navigator.userAgent) ) { return true; }
}
return false;
};
/******************************************************************************/
µb.scheduleAssetUpdater = (( ) => {
let timer, next = 0;
return function(updateDelay) {
if ( timer ) {
clearTimeout(timer);
timer = undefined;
}
if ( updateDelay === 0 ) {
next = 0;
return;
}
const now = Date.now();
// Use the new schedule if and only if it is earlier than the previous
// one.
if ( next !== 0 ) {
updateDelay = Math.min(updateDelay, Math.max(next - now, 0));
}
next = now + updateDelay;
timer = vAPI.setTimeout(( ) => {
timer = undefined;
next = 0;
io.updateStart({
delay: this.hiddenSettings.autoUpdateAssetFetchPeriod * 1000 ||
120000,
auto: true,
});
}, updateDelay);
};
})();
/******************************************************************************/
µb.assetObserver = function(topic, details) {
// Do not update filter list if not in use.
// Also, ignore really bad lists, i.e. those which should not even be
// fetched from a remote server.
if ( topic === 'before-asset-updated' ) {
if ( details.type === 'filters' ) {
if (
this.availableFilterLists.hasOwnProperty(details.assetKey) === false ||
this.selectedFilterLists.indexOf(details.assetKey) === -1 ||
this.badLists.get(details.assetKey)
) {
return;
}
}
return true;
}
// Compile the list while we have the raw version in memory
if ( topic === 'after-asset-updated' ) {
// Skip selfie-related content.
if ( details.assetKey.startsWith('selfie/') ) { return; }
const cached = typeof details.content === 'string' &&
details.content !== '';
if ( this.availableFilterLists.hasOwnProperty(details.assetKey) ) {
if ( cached ) {
if ( this.selectedFilterLists.indexOf(details.assetKey) !== -1 ) {
this.extractFilterListMetadata(
details.assetKey,
details.content
);
if ( this.badLists.has(details.assetKey) === false ) {
io.put(
'compiled/' + details.assetKey,
this.compileFilters(details.content, {
assetKey: details.assetKey
})
);
}
}
} else {
this.removeCompiledFilterList(details.assetKey);
}
} else if ( details.assetKey === this.pslAssetKey ) {
if ( cached ) {
this.compilePublicSuffixList(details.content);
}
} else if ( details.assetKey === 'ublock-badlists' ) {
this.badLists = new Map();
}
vAPI.messaging.broadcast({
what: 'assetUpdated',
key: details.assetKey,
cached: cached
});
// https://github.com/gorhill/uBlock/issues/2585
// Whenever an asset is overwritten, the current selfie is quite
// likely no longer valid.
this.selfieManager.destroy();
return;
}
// Update failed.
if ( topic === 'asset-update-failed' ) {
vAPI.messaging.broadcast({
what: 'assetUpdated',
key: details.assetKey,
failed: true
});
return;
}
// Reload all filter lists if needed.
if ( topic === 'after-assets-updated' ) {
if ( details.assetKeys.length !== 0 ) {
// https://github.com/gorhill/uBlock/pull/2314#issuecomment-278716960
if (
this.hiddenSettings.userResourcesLocation !== 'unset' ||
vAPI.webextFlavor.soup.has('devbuild')
) {
redirectEngine.invalidateResourcesSelfie(io);
}
this.loadFilterLists();
}
if ( this.userSettings.autoUpdate ) {
this.scheduleAssetUpdater(this.hiddenSettings.autoUpdatePeriod * 3600000 || 25200000);
} else {
this.scheduleAssetUpdater(0);
}
vAPI.messaging.broadcast({
what: 'assetsUpdated',
assetKeys: details.assetKeys
});
return;
}
// New asset source became available, if it's a filter list, should we
// auto-select it?
if ( topic === 'builtin-asset-source-added' ) {
if ( details.entry.content === 'filters' ) {
if (
details.entry.off !== true ||
this.listMatchesEnvironment(details.entry)
) {
this.saveSelectedFilterLists([ details.assetKey ], true);
}
}
return;
}
};