mirror of
https://github.com/gorhill/uBlock.git
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564 lines
17 KiB
JavaScript
564 lines
17 KiB
JavaScript
/*******************************************************************************
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uBlock Origin Lite - a comprehensive, MV3-compliant content blocker
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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 } from './ext.js';
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import { fetchJSON } from './fetch.js';
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import { getFilteringModeDetails } from './mode-manager.js';
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import { getEnabledRulesetsDetails } from './ruleset-manager.js';
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import * as ut from './utils.js';
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/******************************************************************************/
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const isGecko = browser.runtime.getURL('').startsWith('moz-extension://');
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const resourceDetailPromises = new Map();
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function getScriptletDetails() {
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let promise = resourceDetailPromises.get('scriptlet');
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if ( promise !== undefined ) { return promise; }
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promise = fetchJSON('/rulesets/scriptlet-details').then(
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entries => new Map(entries)
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);
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resourceDetailPromises.set('scriptlet', promise);
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return promise;
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}
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function getGenericDetails() {
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let promise = resourceDetailPromises.get('generic');
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if ( promise !== undefined ) { return promise; }
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promise = fetchJSON('/rulesets/generic-details').then(
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entries => new Map(entries)
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);
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resourceDetailPromises.set('generic', promise);
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return promise;
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}
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/******************************************************************************/
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// Important: We need to sort the arrays for fast comparison
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const arrayEq = (a = [], b = [], sort = true) => {
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const alen = a.length;
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if ( alen !== b.length ) { return false; }
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if ( sort ) { a.sort(); b.sort(); }
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for ( let i = 0; i < alen; i++ ) {
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if ( a[i] !== b[i] ) { return false; }
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}
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return true;
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};
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/******************************************************************************/
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// The extensions API does not always return exactly what we fed it, so we
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// need to normalize some entries to be sure we properly detect changes when
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// comparing registered entries vs. entries to register.
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const normalizeRegisteredContentScripts = registered => {
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for ( const entry of registered ) {
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const { css = [], js = [] } = entry;
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for ( let i = 0; i < css.length; i++ ) {
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const path = css[i];
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if ( path.startsWith('/') ) { continue; }
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css[i] = `/${path}`;
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}
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for ( let i = 0; i < js.length; i++ ) {
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const path = js[i];
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if ( path.startsWith('/') ) { continue; }
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js[i] = `/${path}`;
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}
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}
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return registered;
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};
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/******************************************************************************/
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function registerHighGeneric(context, genericDetails) {
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const { before, filteringModeDetails, rulesetsDetails } = context;
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const excludeHostnames = [];
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const css = [];
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for ( const details of rulesetsDetails ) {
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const hostnames = genericDetails.get(details.id);
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if ( hostnames !== undefined ) {
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excludeHostnames.push(...hostnames);
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}
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const count = details.css?.generichigh || 0;
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if ( count === 0 ) { continue; }
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css.push(`/rulesets/scripting/generichigh/${details.id}.css`);
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}
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if ( css.length === 0 ) { return; }
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const { none, basic, optimal, complete } = filteringModeDetails;
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const matches = [];
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const excludeMatches = [];
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if ( complete.has('all-urls') ) {
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excludeMatches.push(...ut.matchesFromHostnames(none));
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excludeMatches.push(...ut.matchesFromHostnames(basic));
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excludeMatches.push(...ut.matchesFromHostnames(optimal));
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excludeMatches.push(...ut.matchesFromHostnames(excludeHostnames));
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matches.push('<all_urls>');
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} else {
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matches.push(
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...ut.matchesFromHostnames(
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ut.subtractHostnameIters(
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Array.from(complete),
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excludeHostnames
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)
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)
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);
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}
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if ( matches.length === 0 ) { return; }
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const registered = before.get('css-generichigh');
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before.delete('css-generichigh'); // Important!
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// https://github.com/w3c/webextensions/issues/414#issuecomment-1623992885
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// Once supported, add:
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// cssOrigin: 'USER',
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const directive = {
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id: 'css-generichigh',
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css,
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matches,
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excludeMatches,
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runAt: 'document_end',
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};
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// register
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if ( registered === undefined ) {
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context.toAdd.push(directive);
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return;
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}
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// update
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if (
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arrayEq(registered.css, css, false) === false ||
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arrayEq(registered.matches, matches) === false ||
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arrayEq(registered.excludeMatches, excludeMatches) === false
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) {
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context.toRemove.push('css-generichigh');
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context.toAdd.push(directive);
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}
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}
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/******************************************************************************/
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function registerGeneric(context, genericDetails) {
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const { before, filteringModeDetails, rulesetsDetails } = context;
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const excludeHostnames = [];
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const js = [];
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for ( const details of rulesetsDetails ) {
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const hostnames = genericDetails.get(details.id);
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if ( hostnames !== undefined ) {
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excludeHostnames.push(...hostnames);
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}
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const count = details.css?.generic || 0;
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if ( count === 0 ) { continue; }
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js.push(`/rulesets/scripting/generic/${details.id}.js`);
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}
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if ( js.length === 0 ) { return; }
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js.push('/js/scripting/css-generic.js');
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const { none, basic, optimal, complete } = filteringModeDetails;
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const matches = [];
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const excludeMatches = [];
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if ( complete.has('all-urls') ) {
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excludeMatches.push(...ut.matchesFromHostnames(none));
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excludeMatches.push(...ut.matchesFromHostnames(basic));
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excludeMatches.push(...ut.matchesFromHostnames(optimal));
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excludeMatches.push(...ut.matchesFromHostnames(excludeHostnames));
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matches.push('<all_urls>');
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} else {
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matches.push(
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...ut.matchesFromHostnames(
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ut.subtractHostnameIters(
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Array.from(complete),
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excludeHostnames
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)
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)
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);
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}
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if ( matches.length === 0 ) { return; }
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const registered = before.get('css-generic');
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before.delete('css-generic'); // Important!
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const directive = {
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id: 'css-generic',
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js,
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matches,
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excludeMatches,
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runAt: 'document_idle',
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};
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// register
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if ( registered === undefined ) {
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context.toAdd.push(directive);
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return;
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}
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// update
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if (
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arrayEq(registered.js, js, false) === false ||
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arrayEq(registered.matches, matches) === false ||
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arrayEq(registered.excludeMatches, excludeMatches) === false
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) {
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context.toRemove.push('css-generic');
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context.toAdd.push(directive);
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}
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}
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/******************************************************************************/
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function registerProcedural(context) {
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const { before, filteringModeDetails, rulesetsDetails } = context;
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const js = [];
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for ( const rulesetDetails of rulesetsDetails ) {
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const count = rulesetDetails.css?.procedural || 0;
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if ( count === 0 ) { continue; }
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js.push(`/rulesets/scripting/procedural/${rulesetDetails.id}.js`);
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}
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if ( js.length === 0 ) { return; }
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const { none, basic, optimal, complete } = filteringModeDetails;
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const matches = [
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...ut.matchesFromHostnames(optimal),
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...ut.matchesFromHostnames(complete),
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];
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if ( matches.length === 0 ) { return; }
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js.push('/js/scripting/css-procedural.js');
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const excludeMatches = [];
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if ( none.has('all-urls') === false ) {
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excludeMatches.push(...ut.matchesFromHostnames(none));
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}
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if ( basic.has('all-urls') === false ) {
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excludeMatches.push(...ut.matchesFromHostnames(basic));
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}
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const registered = before.get('css-procedural');
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before.delete('css-procedural'); // Important!
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const directive = {
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id: 'css-procedural',
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js,
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allFrames: true,
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matches,
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excludeMatches,
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runAt: 'document_start',
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};
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// register
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if ( registered === undefined ) {
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context.toAdd.push(directive);
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return;
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}
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// update
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if (
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arrayEq(registered.js, js, false) === false ||
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arrayEq(registered.matches, matches) === false ||
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arrayEq(registered.excludeMatches, excludeMatches) === false
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) {
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context.toRemove.push('css-procedural');
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context.toAdd.push(directive);
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}
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}
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/******************************************************************************/
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function registerDeclarative(context) {
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const { before, filteringModeDetails, rulesetsDetails } = context;
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const js = [];
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for ( const rulesetDetails of rulesetsDetails ) {
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const count = rulesetDetails.css?.declarative || 0;
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if ( count === 0 ) { continue; }
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js.push(`/rulesets/scripting/declarative/${rulesetDetails.id}.js`);
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}
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if ( js.length === 0 ) { return; }
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const { none, basic, optimal, complete } = filteringModeDetails;
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const matches = [
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...ut.matchesFromHostnames(optimal),
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...ut.matchesFromHostnames(complete),
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];
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if ( matches.length === 0 ) { return; }
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js.push('/js/scripting/css-declarative.js');
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const excludeMatches = [];
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if ( none.has('all-urls') === false ) {
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excludeMatches.push(...ut.matchesFromHostnames(none));
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}
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if ( basic.has('all-urls') === false ) {
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excludeMatches.push(...ut.matchesFromHostnames(basic));
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}
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const registered = before.get('css-declarative');
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before.delete('css-declarative'); // Important!
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const directive = {
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id: 'css-declarative',
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js,
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allFrames: true,
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matches,
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excludeMatches,
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runAt: 'document_start',
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};
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// register
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if ( registered === undefined ) {
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context.toAdd.push(directive);
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return;
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}
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// update
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if (
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arrayEq(registered.js, js, false) === false ||
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arrayEq(registered.matches, matches) === false ||
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arrayEq(registered.excludeMatches, excludeMatches) === false
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) {
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context.toRemove.push('css-declarative');
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context.toAdd.push(directive);
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}
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}
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/******************************************************************************/
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function registerSpecific(context) {
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const { before, filteringModeDetails, rulesetsDetails } = context;
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const js = [];
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for ( const rulesetDetails of rulesetsDetails ) {
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const count = rulesetDetails.css?.specific || 0;
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if ( count === 0 ) { continue; }
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js.push(`/rulesets/scripting/specific/${rulesetDetails.id}.js`);
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}
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if ( js.length === 0 ) { return; }
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const { none, basic, optimal, complete } = filteringModeDetails;
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const matches = [
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...ut.matchesFromHostnames(optimal),
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...ut.matchesFromHostnames(complete),
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];
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if ( matches.length === 0 ) { return; }
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js.push('/js/scripting/css-specific.js');
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const excludeMatches = [];
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if ( none.has('all-urls') === false ) {
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excludeMatches.push(...ut.matchesFromHostnames(none));
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}
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if ( basic.has('all-urls') === false ) {
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excludeMatches.push(...ut.matchesFromHostnames(basic));
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}
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const registered = before.get('css-specific');
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before.delete('css-specific'); // Important!
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const directive = {
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id: 'css-specific',
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js,
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allFrames: true,
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matches,
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excludeMatches,
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runAt: 'document_start',
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};
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// register
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if ( registered === undefined ) {
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context.toAdd.push(directive);
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return;
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}
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// update
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if (
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arrayEq(registered.js, js, false) === false ||
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arrayEq(registered.matches, matches) === false ||
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arrayEq(registered.excludeMatches, excludeMatches) === false
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) {
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context.toRemove.push('css-specific');
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context.toAdd.push(directive);
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}
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}
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/******************************************************************************/
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function registerScriptlet(context, scriptletDetails) {
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const { before, filteringModeDetails, rulesetsDetails } = context;
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const hasBroadHostPermission =
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filteringModeDetails.optimal.has('all-urls') ||
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filteringModeDetails.complete.has('all-urls');
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const permissionRevokedMatches = [
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...ut.matchesFromHostnames(filteringModeDetails.none),
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...ut.matchesFromHostnames(filteringModeDetails.basic),
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];
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const permissionGrantedHostnames = [
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...filteringModeDetails.optimal,
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...filteringModeDetails.complete,
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];
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for ( const rulesetId of rulesetsDetails.map(v => v.id) ) {
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const scriptletList = scriptletDetails.get(rulesetId);
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if ( scriptletList === undefined ) { continue; }
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for ( const [ token, scriptletHostnames ] of scriptletList ) {
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const id = `${rulesetId}.${token}`;
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const registered = before.get(id);
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const matches = [];
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const excludeMatches = [];
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let targetHostnames = [];
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if ( hasBroadHostPermission ) {
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excludeMatches.push(...permissionRevokedMatches);
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if ( scriptletHostnames.length > 100 ) {
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targetHostnames = [ '*' ];
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} else {
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targetHostnames = scriptletHostnames;
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}
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} else if ( permissionGrantedHostnames.length !== 0 ) {
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if ( scriptletHostnames.includes('*') ) {
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targetHostnames = permissionGrantedHostnames;
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} else {
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targetHostnames = ut.intersectHostnameIters(
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permissionGrantedHostnames,
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scriptletHostnames
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);
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}
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}
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if ( targetHostnames.length === 0 ) { continue; }
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matches.push(...ut.matchesFromHostnames(targetHostnames));
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before.delete(id); // Important!
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const directive = {
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id,
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js: [ `/rulesets/scripting/scriptlet/${id}.js` ],
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allFrames: true,
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matches,
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excludeMatches,
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runAt: 'document_start',
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};
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// https://bugzilla.mozilla.org/show_bug.cgi?id=1736575
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// `MAIN` world not yet supported in Firefox
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if ( isGecko === false ) {
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directive.world = 'MAIN';
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}
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// register
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if ( registered === undefined ) {
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context.toAdd.push(directive);
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continue;
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}
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// update
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if (
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arrayEq(registered.matches, matches) === false ||
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arrayEq(registered.excludeMatches, excludeMatches) === false
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) {
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context.toRemove.push(id);
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context.toAdd.push(directive);
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}
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}
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}
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}
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/******************************************************************************/
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async function registerInjectables(origins) {
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void origins;
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|
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if ( browser.scripting === undefined ) { return false; }
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|
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const [
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filteringModeDetails,
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rulesetsDetails,
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scriptletDetails,
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genericDetails,
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registered,
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] = await Promise.all([
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getFilteringModeDetails(),
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getEnabledRulesetsDetails(),
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getScriptletDetails(),
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getGenericDetails(),
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browser.scripting.getRegisteredContentScripts(),
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]);
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const before = new Map(
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normalizeRegisteredContentScripts(registered).map(
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entry => [ entry.id, entry ]
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)
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);
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const toAdd = [], toRemove = [];
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const context = {
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filteringModeDetails,
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rulesetsDetails,
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before,
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toAdd,
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toRemove,
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};
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registerDeclarative(context);
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registerProcedural(context);
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registerScriptlet(context, scriptletDetails);
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registerSpecific(context);
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registerGeneric(context, genericDetails);
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registerHighGeneric(context, genericDetails);
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toRemove.push(...Array.from(before.keys()));
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if ( toRemove.length !== 0 ) {
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ut.ubolLog(`Unregistered ${toRemove} content (css/js)`);
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await browser.scripting.unregisterContentScripts({ ids: toRemove })
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.catch(reason => { console.info(reason); });
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}
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if ( toAdd.length !== 0 ) {
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ut.ubolLog(`Registered ${toAdd.map(v => v.id)} content (css/js)`);
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await browser.scripting.registerContentScripts(toAdd)
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.catch(reason => { console.info(reason); });
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}
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return true;
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}
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/******************************************************************************/
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export {
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registerInjectables
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};
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