mirror of
https://github.com/gorhill/uBlock.git
synced 2024-09-23 14:11:28 +02:00
aa73f292ec
Related issue: - https://github.com/uBlockOrigin/uBlock-issues/issues/310 The purpose of this new option is to add the ability to create standalone redirect rule without being forced to create a block filter (a corresponding block filter is always created when using the `redirect=`). Additionally: The syntax `*$redirect=token,...` is now supported, there is no need to "trick" the filter parser with `*/*$redirect=token,...` in order to create redirect rules which are meant to match all paths. Filters of the form `|http*://` will be normalized into two corresponding filters `|https://` and `|http://` so as to reduce the number of filters in the buckets of untokenizable filters.
784 lines
24 KiB
JavaScript
784 lines
24 KiB
JavaScript
/*******************************************************************************
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uBlock Origin - a browser extension to block requests.
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Copyright (C) 2015-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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'use strict';
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/******************************************************************************/
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µBlock.redirectEngine = (( ) => {
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/******************************************************************************/
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/******************************************************************************/
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const redirectableResources = new Map([
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[ '1x1.gif', {
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alias: '1x1-transparent.gif',
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inject: false
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} ],
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[ '2x2.png', {
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alias: '2x2-transparent.png',
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inject: false
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} ],
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[ '3x2.png', {
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alias: '3x2-transparent.png',
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inject: false
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} ],
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[ '32x32.png', {
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alias: '32x32-transparent.png',
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inject: false
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} ],
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[ 'addthis_widget.js', {
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alias: 'addthis.com/addthis_widget.js',
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inject: false
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} ],
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[ 'ampproject_v0.js', {
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alias: 'ampproject.org/v0.js',
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inject: false
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} ],
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[ 'chartbeat.js', {
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alias: 'static.chartbeat.com/chartbeat.js',
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inject: false
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} ],
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[ 'amazon_ads.js', {
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alias: 'amazon-adsystem.com/aax2/amzn_ads.js',
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inject: false
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} ],
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[ 'disqus_embed.js', {
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alias: 'disqus.com/embed.js',
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inject: false
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} ],
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[ 'disqus_forums_embed.js', {
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alias: 'disqus.com/forums/*/embed.js',
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inject: false
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} ],
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[ 'doubleclick_instream_ad_status.js', {
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alias: 'doubleclick.net/instream/ad_status.js',
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inject: false
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} ],
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[ 'google-analytics_analytics.js', {
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alias: 'google-analytics.com/analytics.js',
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inject: false
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} ],
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[ 'google-analytics_cx_api.js', {
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alias: 'google-analytics.com/cx/api.js',
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inject: false
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} ],
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[ 'google-analytics_ga.js', {
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alias: 'google-analytics.com/ga.js',
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inject: false
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} ],
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[ 'google-analytics_inpage_linkid.js', {
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alias: 'google-analytics.com/inpage_linkid.js',
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inject: false
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} ],
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[ 'googlesyndication_adsbygoogle.js', {
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alias: 'googlesyndication.com/adsbygoogle.js',
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inject: false
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} ],
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[ 'googletagmanager_gtm.js', {
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alias: 'googletagmanager.com/gtm.js',
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inject: false
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} ],
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[ 'googletagservices_gpt.js', {
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alias: 'googletagservices.com/gpt.js',
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inject: false
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} ],
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[ 'hd-main.js', {
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inject: false
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} ],
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[ 'ligatus_angular-tag.js', {
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alias: 'ligatus.com/*/angular-tag.js',
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inject: false
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} ],
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[ 'monkeybroker.js', {
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alias: 'd3pkae9owd2lcf.cloudfront.net/mb105.js',
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inject: false
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} ],
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[ 'noeval.js', {
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} ],
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[ 'noeval-silent.js', {
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alias: 'silent-noeval.js',
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} ],
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[ 'nobab.js', {
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alias: 'bab-defuser.js',
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} ],
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[ 'nofab.js', {
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alias: 'fuckadblock.js-3.2.0',
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} ],
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[ 'noop-0.1s.mp3', {
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alias: 'noopmp3-0.1s',
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inject: false
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} ],
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[ 'noop-1s.mp4', {
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alias: 'noopmp4-1s',
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inject: false
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} ],
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[ 'noop.html', {
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alias: 'noopframe',
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inject: false
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} ],
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[ 'noop.js', {
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alias: 'noopjs',
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} ],
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[ 'noop.txt', {
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alias: 'nooptext',
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} ],
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[ 'outbrain-widget.js', {
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alias: 'widgets.outbrain.com/outbrain.js',
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inject: false
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} ],
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[ 'popads.js', {
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alias: 'popads.net.js',
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} ],
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[ 'popads-dummy.js', {
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} ],
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[ 'scorecardresearch_beacon.js', {
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alias: 'scorecardresearch.com/beacon.js',
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inject: false
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} ],
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[ 'window.open-defuser.js', {
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} ],
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]);
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const extToMimeMap = new Map([
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[ 'gif', 'image/gif' ],
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[ 'html', 'text/html' ],
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[ 'js', 'application/javascript' ],
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[ 'mp3', 'audio/mp3' ],
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[ 'mp4', 'video/mp4' ],
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[ 'png', 'image/png' ],
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[ 'txt', 'text/plain' ],
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]);
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const validMimes = new Set(extToMimeMap.values());
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const mimeFromName = function(name) {
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const match = /\.([^.]+)$/.exec(name);
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if ( match !== null ) {
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return extToMimeMap.get(match[1]);
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}
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};
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/******************************************************************************/
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/******************************************************************************/
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const RedirectEntry = function() {
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this.mime = '';
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this.data = '';
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this.warURL = undefined;
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};
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/******************************************************************************/
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// Prevent redirection to web accessible resources when the request is
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// of type 'xmlhttprequest', because XMLHttpRequest.responseURL would
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// cause leakage of extension id. See:
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// - https://stackoverflow.com/a/8056313
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// - https://bugzilla.mozilla.org/show_bug.cgi?id=998076
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RedirectEntry.prototype.toURL = function(fctxt) {
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if (
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this.warURL !== undefined &&
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fctxt instanceof Object &&
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fctxt.type !== 'xmlhttprequest'
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) {
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return `${this.warURL}${vAPI.warSecret()}`;
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}
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if ( this.data === undefined ) { return; }
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if ( this.data.startsWith('data:') === false ) {
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if ( this.mime.indexOf(';') === -1 ) {
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this.data = 'data:' + this.mime + ';base64,' + btoa(this.data);
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} else {
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this.data = 'data:' + this.mime + ',' + this.data;
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}
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}
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return this.data;
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};
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/******************************************************************************/
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RedirectEntry.prototype.toContent = function() {
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if ( this.data.startsWith('data:') ) {
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const pos = this.data.indexOf(',');
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const base64 = this.data.endsWith(';base64', pos);
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this.data = this.data.slice(pos + 1);
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if ( base64 ) {
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this.data = atob(this.data);
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}
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}
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return this.data;
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};
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/******************************************************************************/
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RedirectEntry.fromContent = function(mime, content) {
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const r = new RedirectEntry();
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r.mime = mime;
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r.data = content;
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return r;
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};
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/******************************************************************************/
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RedirectEntry.fromSelfie = function(selfie) {
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const r = new RedirectEntry();
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r.mime = selfie.mime;
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r.data = selfie.data;
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r.warURL = selfie.warURL;
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return r;
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};
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/******************************************************************************/
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/******************************************************************************/
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const RedirectEngine = function() {
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this.aliases = new Map();
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this.resources = new Map();
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this.reset();
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this.resourceNameRegister = '';
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this._desAll = []; // re-use better than re-allocate
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};
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/******************************************************************************/
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RedirectEngine.prototype.reset = function() {
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this.rules = new Map();
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this.ruleTypes = new Set();
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this.ruleSources = new Set();
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this.ruleDestinations = new Set();
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this.modifyTime = Date.now();
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};
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/******************************************************************************/
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RedirectEngine.prototype.freeze = function() {
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};
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/******************************************************************************/
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RedirectEngine.prototype.toBroaderHostname = function(hostname) {
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const pos = hostname.indexOf('.');
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if ( pos !== -1 ) {
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return hostname.slice(pos + 1);
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}
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return hostname !== '*' ? '*' : '';
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};
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/******************************************************************************/
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RedirectEngine.prototype.lookup = function(fctxt) {
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const type = fctxt.type;
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if ( this.ruleTypes.has(type) === false ) { return; }
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const desAll = this._desAll;
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const reqURL = fctxt.url;
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let src = fctxt.getDocHostname();
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let des = fctxt.getHostname();
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let n = 0;
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for (;;) {
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if ( this.ruleDestinations.has(des) ) {
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desAll[n] = des; n += 1;
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}
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des = this.toBroaderHostname(des);
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if ( des === '' ) { break; }
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}
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if ( n === 0 ) { return; }
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for (;;) {
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if ( this.ruleSources.has(src) ) {
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for ( let i = 0; i < n; i++ ) {
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const entries = this.rules.get(`${src} ${desAll[i]} ${type}`);
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if ( entries && this.lookupToken(entries, reqURL) ) {
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return this.resourceNameRegister;
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}
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}
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}
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src = this.toBroaderHostname(src);
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if ( src === '' ) { break; }
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}
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};
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RedirectEngine.prototype.lookupToken = function(entries, reqURL) {
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let j = entries.length;
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while ( j-- ) {
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let entry = entries[j];
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if ( entry.pat instanceof RegExp === false ) {
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entry.pat = new RegExp(entry.pat, 'i');
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}
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if ( entry.pat.test(reqURL) ) {
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this.resourceNameRegister = entry.tok;
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return true;
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}
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}
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};
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/******************************************************************************/
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RedirectEngine.prototype.toURL = function(fctxt) {
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let token = this.lookup(fctxt);
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if ( token === undefined ) { return; }
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const entry = this.resources.get(this.aliases.get(token) || token);
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if ( entry !== undefined ) {
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return entry.toURL(fctxt);
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}
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};
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/******************************************************************************/
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RedirectEngine.prototype.matches = function(context) {
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const token = this.lookup(context);
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return token !== undefined &&
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this.resources.has(this.aliases.get(token) || token);
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};
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/******************************************************************************/
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RedirectEngine.prototype.addRule = function(src, des, type, pattern, redirect) {
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this.ruleSources.add(src);
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this.ruleDestinations.add(des);
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this.ruleTypes.add(type);
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const key = `${src} ${des} ${type}`,
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entries = this.rules.get(key);
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if ( entries === undefined ) {
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this.rules.set(key, [ { tok: redirect, pat: pattern } ]);
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this.modifyTime = Date.now();
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return;
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}
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let entry;
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for ( var i = 0, n = entries.length; i < n; i++ ) {
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entry = entries[i];
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if ( redirect === entry.tok ) { break; }
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}
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if ( i === n ) {
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entries.push({ tok: redirect, pat: pattern });
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return;
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}
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let p = entry.pat;
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if ( p instanceof RegExp ) {
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p = p.source;
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}
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// Duplicate?
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let pos = p.indexOf(pattern);
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if ( pos !== -1 ) {
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if ( pos === 0 || p.charAt(pos - 1) === '|' ) {
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pos += pattern.length;
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if ( pos === p.length || p.charAt(pos) === '|' ) { return; }
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}
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}
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entry.pat = p + '|' + pattern;
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};
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/******************************************************************************/
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RedirectEngine.prototype.fromCompiledRule = function(line) {
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const fields = line.split('\t');
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if ( fields.length !== 5 ) { return; }
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this.addRule(fields[0], fields[1], fields[2], fields[3], fields[4]);
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};
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/******************************************************************************/
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RedirectEngine.prototype.compileRuleFromStaticFilter = function(line) {
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const matches = this.reFilterParser.exec(line);
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if ( matches === null || matches.length !== 4 ) { return; }
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const des = matches[1] || '';
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// https://github.com/uBlockOrigin/uBlock-issues/issues/572
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// Extract best possible hostname.
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let deshn = des;
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let pos = deshn.lastIndexOf('*');
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if ( pos !== -1 ) {
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deshn = deshn.slice(pos + 1);
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pos = deshn.indexOf('.');
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if ( pos !== -1 ) {
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deshn = deshn.slice(pos + 1);
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} else {
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deshn = '';
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}
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}
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const path = matches[2] || '';
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let pattern =
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des
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.replace(/\*/g, '[\\w.%-]*')
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.replace(/\./g, '\\.') +
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path
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.replace(/[.+?{}()|[\]\/\\]/g, '\\$&')
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.replace(/\^/g, '[^\\w.%-]')
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.replace(/\*/g, '.*?');
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if ( pattern === '' ) {
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pattern = '^';
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}
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let type,
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redirect = '',
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srchns = [];
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for ( const option of matches[3].split(',') ) {
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if ( option.startsWith('redirect=') ) {
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redirect = option.slice(9);
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continue;
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}
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if ( option.startsWith('redirect-rule=') ) {
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redirect = option.slice(14);
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continue;
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}
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if ( option.startsWith('domain=') ) {
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srchns = option.slice(7).split('|');
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continue;
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}
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if ( (option === 'first-party' || option === '1p') && deshn !== '' ) {
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srchns.push(µBlock.URI.domainFromHostname(deshn) || deshn);
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continue;
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}
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// One and only one type must be specified.
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if ( this.supportedTypes.has(option) ) {
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if ( type !== undefined ) { return; }
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type = this.supportedTypes.get(option);
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continue;
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}
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}
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// Need a resource token.
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if ( redirect === '' ) { return; }
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// Need one single type -- not negated.
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if ( type === undefined ) { return; }
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if ( deshn === '' ) {
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deshn = '*';
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}
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|
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if ( srchns.length === 0 ) {
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srchns.push('*');
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}
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|
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const out = [];
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for ( const srchn of srchns ) {
|
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if ( srchn === '' ) { continue; }
|
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if ( srchn.startsWith('~') ) { continue; }
|
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out.push(`${srchn}\t${deshn}\t${type}\t${pattern}\t${redirect}`);
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}
|
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|
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if ( out.length === 0 ) { return; }
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return out;
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};
|
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/******************************************************************************/
|
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|
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RedirectEngine.prototype.reFilterParser = /^(?:\|\|([^\/:?#^]+)|\*)([^$]+)?\$([^$]+)$/;
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|
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RedirectEngine.prototype.supportedTypes = new Map([
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[ 'css', 'stylesheet' ],
|
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[ 'font', 'font' ],
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[ 'image', 'image' ],
|
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[ 'media', 'media' ],
|
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[ 'object', 'object' ],
|
|
[ 'script', 'script' ],
|
|
[ 'stylesheet', 'stylesheet' ],
|
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[ 'frame', 'sub_frame' ],
|
|
[ 'subdocument', 'sub_frame' ],
|
|
[ 'xhr', 'xmlhttprequest' ],
|
|
[ 'xmlhttprequest', 'xmlhttprequest' ],
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]);
|
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|
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/******************************************************************************/
|
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|
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RedirectEngine.prototype.toSelfie = function(path) {
|
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// Because rules may contains RegExp instances, we need to manually
|
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// convert it to a serializable format. The serialized format must be
|
|
// suitable to be used as an argument to the Map() constructor.
|
|
const rules = [];
|
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for ( const item of this.rules ) {
|
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const rule = [ item[0], [] ];
|
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const entries = item[1];
|
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let i = entries.length;
|
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while ( i-- ) {
|
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const entry = entries[i];
|
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rule[1].push({
|
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tok: entry.tok,
|
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pat: entry.pat instanceof RegExp ? entry.pat.source : entry.pat
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});
|
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}
|
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rules.push(rule);
|
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}
|
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return µBlock.assets.put(
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`${path}/main`,
|
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JSON.stringify({
|
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rules: rules,
|
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ruleTypes: Array.from(this.ruleTypes),
|
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ruleSources: Array.from(this.ruleSources),
|
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ruleDestinations: Array.from(this.ruleDestinations)
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})
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);
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};
|
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|
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/******************************************************************************/
|
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|
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RedirectEngine.prototype.fromSelfie = function(path) {
|
|
return µBlock.assets.get(`${path}/main`).then(details => {
|
|
let selfie;
|
|
try {
|
|
selfie = JSON.parse(details.content);
|
|
} catch (ex) {
|
|
}
|
|
if ( selfie instanceof Object === false ) { return false; }
|
|
this.rules = new Map(selfie.rules);
|
|
this.ruleTypes = new Set(selfie.ruleTypes);
|
|
this.ruleSources = new Set(selfie.ruleSources);
|
|
this.ruleDestinations = new Set(selfie.ruleDestinations);
|
|
this.modifyTime = Date.now();
|
|
return true;
|
|
});
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
RedirectEngine.prototype.resourceURIFromName = function(name, mime) {
|
|
const entry = this.resources.get(this.aliases.get(name) || name);
|
|
if (
|
|
(entry !== undefined) &&
|
|
(mime === undefined || entry.mime.startsWith(mime))
|
|
) {
|
|
return entry.toURL();
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
RedirectEngine.prototype.resourceContentFromName = function(name, mime) {
|
|
const entry = this.resources.get(this.aliases.get(name) || name);
|
|
if ( entry === undefined ) { return; }
|
|
if ( mime === undefined || entry.mime.startsWith(mime) ) {
|
|
return entry.toContent();
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
// TODO: combine same key-redirect pairs into a single regex.
|
|
|
|
// https://github.com/uBlockOrigin/uAssets/commit/deefe875551197d655f79cb540e62dfc17c95f42
|
|
// Consider 'none' a reserved keyword, to be used to disable redirection.
|
|
|
|
RedirectEngine.prototype.resourcesFromString = function(text) {
|
|
const lineIter = new µBlock.LineIterator(removeTopCommentBlock(text));
|
|
const reNonEmptyLine = /\S/;
|
|
let fields, encoded, details;
|
|
|
|
while ( lineIter.eot() === false ) {
|
|
let line = lineIter.next();
|
|
if ( line.startsWith('#') ) { continue; }
|
|
if ( line.startsWith('// ') ) { continue; }
|
|
|
|
if ( fields === undefined ) {
|
|
if ( line === '' ) { continue; }
|
|
// Modern parser
|
|
if ( line.startsWith('/// ') ) {
|
|
const name = line.slice(4).trim();
|
|
fields = [ name, mimeFromName(name) ];
|
|
continue;
|
|
}
|
|
// Legacy parser
|
|
const head = line.trim().split(/\s+/);
|
|
if ( head.length !== 2 ) { continue; }
|
|
if ( head[0] === 'none' ) { continue; }
|
|
let pos = head[1].indexOf(';');
|
|
if ( pos === -1 ) { pos = head[1].length; }
|
|
if ( validMimes.has(head[1].slice(0, pos)) === false ) {
|
|
continue;
|
|
}
|
|
encoded = head[1].indexOf(';') !== -1;
|
|
fields = head;
|
|
continue;
|
|
}
|
|
|
|
if ( line.startsWith('/// ') ) {
|
|
if ( details === undefined ) {
|
|
details = {};
|
|
}
|
|
const [ prop, value ] = line.slice(4).trim().split(/\s+/);
|
|
if ( value !== undefined ) {
|
|
details[prop] = value;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if ( reNonEmptyLine.test(line) ) {
|
|
fields.push(encoded ? line.trim() : line);
|
|
continue;
|
|
}
|
|
|
|
const name = this.aliases.get(fields[0]) || fields[0];
|
|
const mime = fields[1];
|
|
const content = µBlock.orphanizeString(
|
|
fields.slice(2).join(encoded ? '' : '\n')
|
|
);
|
|
|
|
// No more data, add the resource.
|
|
this.resources.set(
|
|
name,
|
|
RedirectEntry.fromContent(mime, content)
|
|
);
|
|
|
|
if ( details instanceof Object && details.alias ) {
|
|
this.aliases.set(details.alias, name);
|
|
}
|
|
|
|
fields = undefined;
|
|
details = undefined;
|
|
}
|
|
|
|
// Process pending resource data.
|
|
if ( fields !== undefined ) {
|
|
const name = fields[0];
|
|
const mime = fields[1];
|
|
const content = µBlock.orphanizeString(
|
|
fields.slice(2).join(encoded ? '' : '\n')
|
|
);
|
|
this.resources.set(
|
|
name,
|
|
RedirectEntry.fromContent(mime, content)
|
|
);
|
|
if ( details instanceof Object && details.alias ) {
|
|
this.aliases.set(details.alias, name);
|
|
}
|
|
}
|
|
|
|
this.modifyTime = Date.now();
|
|
};
|
|
|
|
const removeTopCommentBlock = function(text) {
|
|
return text.replace(/^\/\*[\S\s]+?\n\*\/\s*/, '');
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
RedirectEngine.prototype.loadBuiltinResources = function() {
|
|
this.resources = new Map();
|
|
this.aliases = new Map();
|
|
const fetches = [
|
|
µBlock.assets.fetchText('/assets/resources/scriptlets.js'),
|
|
];
|
|
|
|
// TODO: remove once usage of uBO 1.20.4 is widespread.
|
|
µBlock.assets.remove('ublock-resources');
|
|
|
|
for ( const [ name, details ] of redirectableResources ) {
|
|
if ( details.inject !== false ) {
|
|
fetches.push(
|
|
µBlock.assets.fetchText(
|
|
`/web_accessible_resources/${name}${vAPI.warSecret()}`
|
|
)
|
|
);
|
|
continue;
|
|
}
|
|
const entry = RedirectEntry.fromSelfie({
|
|
mime: mimeFromName(name),
|
|
warURL: vAPI.getURL(`/web_accessible_resources/${name}`),
|
|
});
|
|
this.resources.set(name, entry);
|
|
if ( details.alias !== undefined ) {
|
|
this.aliases.set(details.alias, name);
|
|
}
|
|
}
|
|
|
|
return Promise.all(fetches).then(results => {
|
|
// Built-in redirectable resources
|
|
for ( let i = 1; i < results.length; i++ ) {
|
|
const result = results[i];
|
|
const match = /^\/web_accessible_resources\/([^?]+)/.exec(result.url);
|
|
if ( match === null ) { continue; }
|
|
const name = match[1];
|
|
const content = removeTopCommentBlock(result.content);
|
|
const details = redirectableResources.get(name);
|
|
const entry = RedirectEntry.fromSelfie({
|
|
mime: mimeFromName(name),
|
|
data: content,
|
|
warURL: vAPI.getURL(`/web_accessible_resources/${name}`),
|
|
});
|
|
this.resources.set(name, entry);
|
|
if ( details.alias !== undefined ) {
|
|
this.aliases.set(details.alias, name);
|
|
}
|
|
}
|
|
// Additional resources
|
|
const content = results[0].content;
|
|
if ( typeof content === 'string' && content.length !== 0 ) {
|
|
this.resourcesFromString(content);
|
|
}
|
|
});
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
const resourcesSelfieVersion = 5;
|
|
|
|
RedirectEngine.prototype.selfieFromResources = function() {
|
|
µBlock.assets.put(
|
|
'compiled/redirectEngine/resources',
|
|
JSON.stringify({
|
|
version: resourcesSelfieVersion,
|
|
aliases: Array.from(this.aliases),
|
|
resources: Array.from(this.resources),
|
|
})
|
|
);
|
|
};
|
|
|
|
RedirectEngine.prototype.resourcesFromSelfie = function() {
|
|
return µBlock.assets.get(
|
|
'compiled/redirectEngine/resources'
|
|
).then(details => {
|
|
let selfie;
|
|
try {
|
|
selfie = JSON.parse(details.content);
|
|
} catch(ex) {
|
|
}
|
|
if (
|
|
selfie instanceof Object === false ||
|
|
selfie.version !== resourcesSelfieVersion ||
|
|
Array.isArray(selfie.resources) === false
|
|
) {
|
|
return false;
|
|
}
|
|
this.aliases = new Map(selfie.aliases);
|
|
this.resources = new Map();
|
|
for ( const [ token, entry ] of selfie.resources ) {
|
|
this.resources.set(token, RedirectEntry.fromSelfie(entry));
|
|
}
|
|
return true;
|
|
});
|
|
};
|
|
|
|
RedirectEngine.prototype.invalidateResourcesSelfie = function() {
|
|
µBlock.assets.remove('compiled/redirectEngine/resources');
|
|
|
|
// TODO: obsolete, remove eventually
|
|
µBlock.cacheStorage.remove('resourcesSelfie');
|
|
};
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
return new RedirectEngine();
|
|
|
|
/******************************************************************************/
|
|
|
|
})();
|