mirror of
https://github.com/gorhill/uBlock.git
synced 2024-11-07 03:12:33 +01:00
28aee736a5
Consequently, AdGuard URL Tracking Protection (AUTP) has been added to the set of available filter lists. However, removeparam= equivalent DNR rules can only be enforced when granting uBOL broad permissions. If broad permissions are not granted, removeparam= equivalent DNR rules are ignored. Exception removeparam= filters are not supported, and these are present in AUTP and meant to unbreak some websites which are known to break as a result of removing query parameters. This is issue might be mitigated in the future by making the conversion from filters to DNR rules more complicated but this can never replace the accuracy of uBO's filtering engine being able to fully enforce arbitrary exception removeparam= filters. Also, it is not possible to translate regex-based removeparam= values to DNR rules, so these are dropped at conversion time. As with other filters to DNR rules conversion, the converter coallesce many distinct removeparam= filters into fewer DNR rules.
374 lines
12 KiB
JavaScript
374 lines
12 KiB
JavaScript
/*******************************************************************************
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uBlock Origin - a browser extension to block requests.
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Copyright (C) 2022-present 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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/* jshint esversion:11 */
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'use strict';
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/******************************************************************************/
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import { browser, dnr, i18n } from './ext.js';
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import { fetchJSON } from './fetch.js';
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/******************************************************************************/
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const RULE_REALM_SIZE = 1000000;
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const REGEXES_REALM_START = 1000000;
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const REGEXES_REALM_END = REGEXES_REALM_START + RULE_REALM_SIZE;
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const REMOVEPARAMS_REALM_START = 2000000;
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const REMOVEPARAMS_REALM_END = REMOVEPARAMS_REALM_START + RULE_REALM_SIZE;
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const TRUSTED_DIRECTIVE_BASE_RULE_ID = 8000000;
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const CURRENT_CONFIG_BASE_RULE_ID = 9000000;
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/******************************************************************************/
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let rulesetDetailsPromise;
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function getRulesetDetails() {
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if ( rulesetDetailsPromise !== undefined ) {
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return rulesetDetailsPromise;
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}
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rulesetDetailsPromise = fetchJSON('/rulesets/ruleset-details').then(entries => {
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const map = new Map(
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entries.map(entry => [ entry.id, entry ])
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);
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return map;
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});
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return rulesetDetailsPromise;
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}
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/******************************************************************************/
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let dynamicRuleMapPromise;
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function getDynamicRules() {
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if ( dynamicRuleMapPromise !== undefined ) {
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return dynamicRuleMapPromise;
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}
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dynamicRuleMapPromise = dnr.getDynamicRules().then(rules => {
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const map = new Map(
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rules.map(rule => [ rule.id, rule ])
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);
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console.log(`Dynamic rule count: ${map.size}`);
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console.log(`Available dynamic rule count: ${dnr.MAX_NUMBER_OF_DYNAMIC_AND_SESSION_RULES - map.size}`);
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return map;
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});
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return dynamicRuleMapPromise;
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}
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/******************************************************************************/
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async function updateRegexRules() {
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const [
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rulesetDetails,
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dynamicRules
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] = await Promise.all([
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getEnabledRulesetsDetails(),
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dnr.getDynamicRules(),
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]);
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// Avoid testing already tested regexes
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const validRegexSet = new Set(
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dynamicRules.filter(rule =>
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rule.condition?.regexFilter && true || false
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).map(rule =>
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rule.condition.regexFilter
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)
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);
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const allRules = [];
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const toCheck = [];
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// Fetch regexes for all enabled rulesets
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const toFetch = [];
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for ( const details of rulesetDetails ) {
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if ( details.rules.regexes === 0 ) { continue; }
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toFetch.push(fetchJSON(`/rulesets/${details.id}.regexes`));
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}
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const regexRulesets = await Promise.all(toFetch);
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// Validate fetched regexes
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let regexRuleId = REGEXES_REALM_START;
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for ( const rules of regexRulesets ) {
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if ( Array.isArray(rules) === false ) { continue; }
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for ( const rule of rules ) {
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rule.id = regexRuleId++;
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const {
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regexFilter: regex,
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isUrlFilterCaseSensitive: isCaseSensitive
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} = rule.condition;
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allRules.push(rule);
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toCheck.push(
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validRegexSet.has(regex)
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? { isSupported: true }
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: dnr.isRegexSupported({ regex, isCaseSensitive })
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);
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}
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}
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// Collate results
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const results = await Promise.all(toCheck);
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const newRules = [];
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for ( let i = 0; i < allRules.length; i++ ) {
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const rule = allRules[i];
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const result = results[i];
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if ( result instanceof Object && result.isSupported ) {
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newRules.push(rule);
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} else {
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//console.info(`${result.reason}: ${rule.condition.regexFilter}`);
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}
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}
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console.info(
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`Rejected regex filters: ${allRules.length-newRules.length} out of ${allRules.length}`
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);
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// Add validated regex rules to dynamic ruleset without affecting rules
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// outside regex rules realm.
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const dynamicRuleMap = await getDynamicRules();
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const newRuleMap = new Map(newRules.map(rule => [ rule.id, rule ]));
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const addRules = [];
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const removeRuleIds = [];
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for ( const oldRule of dynamicRuleMap.values() ) {
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if ( oldRule.id < REGEXES_REALM_START ) { continue; }
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if ( oldRule.id >= REGEXES_REALM_END ) { continue; }
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const newRule = newRuleMap.get(oldRule.id);
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if ( newRule === undefined ) {
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removeRuleIds.push(oldRule.id);
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dynamicRuleMap.delete(oldRule.id);
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} else if ( JSON.stringify(oldRule) !== JSON.stringify(newRule) ) {
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removeRuleIds.push(oldRule.id);
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addRules.push(newRule);
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dynamicRuleMap.set(oldRule.id, newRule);
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}
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}
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for ( const newRule of newRuleMap.values() ) {
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if ( dynamicRuleMap.has(newRule.id) ) { continue; }
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addRules.push(newRule);
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dynamicRuleMap.set(newRule.id, newRule);
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}
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if ( addRules.length === 0 && removeRuleIds.length === 0 ) { return; }
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if ( removeRuleIds.length !== 0 ) {
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console.info(`Remove ${removeRuleIds.length} DNR regex rules`);
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}
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if ( addRules.length !== 0 ) {
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console.info(`Add ${addRules.length} DNR regex rules`);
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}
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return dnr.updateDynamicRules({ addRules, removeRuleIds });
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}
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/******************************************************************************/
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async function updateRemoveparamRules() {
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const [
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hasOmnipotence,
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rulesetDetails,
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dynamicRuleMap,
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] = await Promise.all([
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browser.permissions.contains({ origins: [ '<all_urls>' ] }),
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getEnabledRulesetsDetails(),
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getDynamicRules(),
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]);
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// Fetch removeparam rules for all enabled rulesets
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const toFetch = [];
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for ( const details of rulesetDetails ) {
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if ( details.rules.removeparams === 0 ) { continue; }
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toFetch.push(fetchJSON(`/rulesets/${details.id}.removeparams`));
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}
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const removeparamRulesets = await Promise.all(toFetch);
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// Removeparam rules can only be enforced with omnipotence
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const newRules = [];
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if ( hasOmnipotence ) {
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let removeparamRuleId = REMOVEPARAMS_REALM_START;
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for ( const rules of removeparamRulesets ) {
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if ( Array.isArray(rules) === false ) { continue; }
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for ( const rule of rules ) {
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rule.id = removeparamRuleId++;
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newRules.push(rule);
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}
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}
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}
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// Add removeparam rules to dynamic ruleset without affecting rules
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// outside removeparam rules realm.
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const newRuleMap = new Map(newRules.map(rule => [ rule.id, rule ]));
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const addRules = [];
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const removeRuleIds = [];
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for ( const oldRule of dynamicRuleMap.values() ) {
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if ( oldRule.id < REMOVEPARAMS_REALM_START ) { continue; }
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if ( oldRule.id >= REMOVEPARAMS_REALM_END ) { continue; }
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const newRule = newRuleMap.get(oldRule.id);
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if ( newRule === undefined ) {
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removeRuleIds.push(oldRule.id);
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dynamicRuleMap.delete(oldRule.id);
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} else if ( JSON.stringify(oldRule) !== JSON.stringify(newRule) ) {
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removeRuleIds.push(oldRule.id);
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addRules.push(newRule);
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dynamicRuleMap.set(oldRule.id, newRule);
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}
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}
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for ( const newRule of newRuleMap.values() ) {
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if ( dynamicRuleMap.has(newRule.id) ) { continue; }
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addRules.push(newRule);
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dynamicRuleMap.set(newRule.id, newRule);
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}
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if ( addRules.length === 0 && removeRuleIds.length === 0 ) { return; }
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if ( removeRuleIds.length !== 0 ) {
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console.info(`Remove ${removeRuleIds.length} DNR removeparam rules`);
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}
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if ( addRules.length !== 0 ) {
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console.info(`Add ${addRules.length} DNR removeparam rules`);
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}
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return dnr.updateDynamicRules({ addRules, removeRuleIds });
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}
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/******************************************************************************/
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async function updateDynamicRules() {
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return Promise.all([
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updateRegexRules(),
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updateRemoveparamRules(),
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]);
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}
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/******************************************************************************/
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async function defaultRulesetsFromLanguage() {
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const out = [ 'default' ];
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const dropCountry = lang => {
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const pos = lang.indexOf('-');
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if ( pos === -1 ) { return lang; }
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return lang.slice(0, pos);
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};
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const langSet = new Set();
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await i18n.getAcceptLanguages().then(langs => {
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for ( const lang of langs.map(dropCountry) ) {
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langSet.add(lang);
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}
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});
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langSet.add(dropCountry(i18n.getUILanguage()));
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const reTargetLang = new RegExp(
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`\\b(${Array.from(langSet).join('|')})\\b`
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);
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const rulesetDetails = await getRulesetDetails();
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for ( const [ id, details ] of rulesetDetails ) {
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if ( typeof details.lang !== 'string' ) { continue; }
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if ( reTargetLang.test(details.lang) === false ) { continue; }
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out.push(id);
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}
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return out;
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}
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/******************************************************************************/
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async function enableRulesets(ids) {
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const afterIds = new Set(ids);
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const beforeIds = new Set(await dnr.getEnabledRulesets());
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const enableRulesetSet = new Set();
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const disableRulesetSet = new Set();
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for ( const id of afterIds ) {
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if ( beforeIds.has(id) ) { continue; }
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enableRulesetSet.add(id);
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}
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for ( const id of beforeIds ) {
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if ( afterIds.has(id) ) { continue; }
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disableRulesetSet.add(id);
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}
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if ( enableRulesetSet.size === 0 && disableRulesetSet.size === 0 ) {
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return;
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}
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// Be sure the rulesets to enable/disable do exist in the current version,
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// otherwise the API throws.
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const rulesetDetails = await getRulesetDetails();
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for ( const id of enableRulesetSet ) {
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if ( rulesetDetails.has(id) ) { continue; }
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enableRulesetSet.delete(id);
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}
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for ( const id of disableRulesetSet ) {
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if ( rulesetDetails.has(id) ) { continue; }
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disableRulesetSet.delete(id);
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}
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const enableRulesetIds = Array.from(enableRulesetSet);
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const disableRulesetIds = Array.from(disableRulesetSet);
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if ( enableRulesetIds.length !== 0 ) {
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console.info(`Enable rulesets: ${enableRulesetIds}`);
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}
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if ( disableRulesetIds.length !== 0 ) {
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console.info(`Disable ruleset: ${disableRulesetIds}`);
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}
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await dnr.updateEnabledRulesets({ enableRulesetIds, disableRulesetIds });
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return Promise.all([
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updateRegexRules(),
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updateRemoveparamRules(),
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]);
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}
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/******************************************************************************/
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async function getEnabledRulesetsDetails() {
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const [
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ids,
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rulesetDetails,
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] = await Promise.all([
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dnr.getEnabledRulesets(),
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getRulesetDetails(),
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]);
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const out = [];
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for ( const id of ids ) {
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const ruleset = rulesetDetails.get(id);
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if ( ruleset === undefined ) { continue; }
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out.push(ruleset);
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}
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return out;
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}
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/******************************************************************************/
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export {
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TRUSTED_DIRECTIVE_BASE_RULE_ID,
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CURRENT_CONFIG_BASE_RULE_ID,
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getRulesetDetails,
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getDynamicRules,
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enableRulesets,
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defaultRulesetsFromLanguage,
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getEnabledRulesetsDetails,
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updateDynamicRules,
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};
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