mirror of
https://github.com/gorhill/uBlock.git
synced 2024-11-07 11:22:38 +01:00
A new filtering class has been created: "static extended filtering". This new class is an umbrella class for more specialized filtering engines: - Cosmetic filtering - Scriptlet filtering - HTML filtering HTML filtering is available only on platforms which support modifying the response body on the fly, so only Firefox 57+ at the moment. With the ability to modify the response body, HTML filtering has been introduced: removing elements from the DOM before the source data has been parsed by the browser. A consequence of HTML filtering ability is to bring back script tag filtering feature.
This commit is contained in:
Raymond Hill
parent
d2df01dc08
commit
a9f68fe02f
@ -29,7 +29,11 @@ vAPI.net = {
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onBeforeRequest: {},
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onBeforeMaybeSpuriousCSPReport: {},
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onHeadersReceived: {},
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nativeCSPReportFiltering: true
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nativeCSPReportFiltering: true,
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webRequest: browser.webRequest,
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canFilterResponseBody:
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typeof browser.webRequest === 'object' &&
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typeof browser.webRequest.filterResponseData === 'function'
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};
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/******************************************************************************/
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@ -22,7 +22,10 @@
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<script src="js/dynamic-net-filtering.js"></script>
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<script src="js/static-net-filtering.js"></script>
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<script src="js/url-net-filtering.js"></script>
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<script src="js/static-ext-filtering.js"></script>
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<script src="js/cosmetic-filtering.js"></script>
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<script src="js/scriptlet-filtering.js"></script>
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<script src="js/html-filtering.js"></script>
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<script src="js/hnswitches.js"></script>
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<script src="js/ublock.js"></script>
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<script src="js/messaging.js"></script>
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@ -53,11 +53,10 @@ api.removeObserver = function(observer) {
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};
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var fireNotification = function(topic, details) {
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var result;
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var result, r;
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for ( var i = 0; i < observers.length; i++ ) {
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if ( observers[i](topic, details) === false ) {
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result = false;
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}
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r = observers[i](topic, details);
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if ( r !== undefined ) { result = r; }
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}
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return result;
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};
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@ -955,7 +954,7 @@ var updateNext = function() {
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fireNotification(
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'before-asset-updated',
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{ assetKey: assetKey, type: assetEntry.content }
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) !== false
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) === true
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) {
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return assetKey;
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}
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@ -95,6 +95,7 @@ var µBlock = (function() { // jshint ignore:line
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// Features detection.
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privacySettingsSupported: vAPI.browserSettings instanceof Object,
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cloudStorageSupported: vAPI.cloud instanceof Object,
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canFilterResponseBody: vAPI.net.canFilterResponseBody === true,
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// https://github.com/chrisaljoudi/uBlock/issues/180
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// Whitelist directives need to be loaded once the PSL is available
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@ -120,8 +121,8 @@ var µBlock = (function() { // jshint ignore:line
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// read-only
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systemSettings: {
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compiledMagic: 'vrgorlgelgws',
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selfieMagic: 'pxpclstriajk'
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compiledMagic: 'puuijtkfpspv',
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selfieMagic: 'puuijtkfpspv'
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},
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restoreBackupSettings: {
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@ -1379,20 +1379,9 @@ vAPI.domSurveyor = (function() {
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// Library of resources is located at:
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// https://github.com/gorhill/uBlock/blob/master/assets/ublock/resources.txt
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if ( cfeDetails.scripts ) {
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// Have the injected script tag remove itself when execution completes:
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// to keep DOM as clean as possible.
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var text = cfeDetails.scripts +
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"\n" +
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"(function() {\n" +
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" var c = document.currentScript,\n" +
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" p = c && c.parentNode;\n" +
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" if ( p ) {\n" +
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" p.removeChild(c);\n" +
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" }\n" +
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"})();";
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vAPI.injectScriptlet(document, text);
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vAPI.injectedScripts = text;
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if ( response.scriptlets ) {
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vAPI.injectScriptlet(document, response.scriptlets);
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vAPI.injectedScripts = response.scriptlets;
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}
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if ( vAPI.domSurveyor instanceof Object ) {
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@ -1414,13 +1403,11 @@ vAPI.domSurveyor = (function() {
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};
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// This starts bootstrap process.
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var url = window.location.href;
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vAPI.messaging.send(
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'contentscript',
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{
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what: 'retrieveContentScriptParameters',
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pageURL: url,
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locationURL: url,
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url: window.location.href,
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isRootFrame: window === window.top
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},
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bootstrapPhase1
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File diff suppressed because it is too large
Load Diff
357
src/js/html-filtering.js
Normal file
357
src/js/html-filtering.js
Normal file
@ -0,0 +1,357 @@
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/*******************************************************************************
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uBlock Origin - a browser extension to block requests.
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Copyright (C) 2017 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.htmlFilteringEngine = (function() {
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var api = {};
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var µb = µBlock,
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filterDB = new µb.staticExtFilteringEngine.HostnameBasedDB(),
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pselectors = new Map(),
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duplicates = new Set(),
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docRegister, loggerRegister;
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var PSelectorHasTask = function(task) {
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this.selector = task[1];
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};
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PSelectorHasTask.prototype.exec = function(input) {
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var output = [];
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for ( var node of input ) {
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if ( node.querySelector(this.selector) !== null ) {
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output.push(node);
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}
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}
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return output;
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};
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var PSelectorHasTextTask = function(task) {
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this.needle = new RegExp(task[1]);
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};
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PSelectorHasTextTask.prototype.exec = function(input) {
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var output = [];
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for ( var node of input ) {
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if ( this.needle.test(node.textContent) ) {
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output.push(node);
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}
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}
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return output;
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};
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var PSelectorIfTask = function(task) {
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this.pselector = new PSelector(task[1]);
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};
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PSelectorIfTask.prototype.target = true;
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PSelectorIfTask.prototype.exec = function(input) {
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var output = [];
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for ( var node of input ) {
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if ( this.pselector.test(node) === this.target ) {
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output.push(node);
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}
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}
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return output;
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};
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var PSelectorIfNotTask = function(task) {
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PSelectorIfTask.call(this, task);
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this.target = false;
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};
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PSelectorIfNotTask.prototype = Object.create(PSelectorIfTask.prototype);
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PSelectorIfNotTask.prototype.constructor = PSelectorIfNotTask;
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var PSelectorXpathTask = function(task) {
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this.xpe = task[1];
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};
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PSelectorXpathTask.prototype.exec = function(input) {
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var output = [],
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xpe = docRegister.createExpression(this.xpe, null),
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xpr = null;
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for ( var node of input ) {
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xpr = xpe.evaluate(
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node,
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XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,
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xpr
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);
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var j = xpr.snapshotLength;
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while ( j-- ) {
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node = xpr.snapshotItem(j);
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if ( node.nodeType === 1 ) {
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output.push(node);
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}
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}
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}
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return output;
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};
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var PSelector = function(o) {
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if ( PSelector.prototype.operatorToTaskMap === undefined ) {
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PSelector.prototype.operatorToTaskMap = new Map([
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[ ':has', PSelectorHasTask ],
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[ ':has-text', PSelectorHasTextTask ],
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[ ':if', PSelectorIfTask ],
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[ ':if-not', PSelectorIfNotTask ],
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[ ':xpath', PSelectorXpathTask ]
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]);
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}
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this.invalid = false;
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this.raw = o.raw;
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this.selector = o.selector;
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this.tasks = [];
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var tasks = o.tasks;
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if ( !tasks ) { return; }
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for ( var task of tasks ) {
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var ctor = this.operatorToTaskMap.get(task[0]);
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if ( ctor === undefined ) {
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this.invalid = true;
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break;
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}
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this.tasks.push(new ctor(task));
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}
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};
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PSelector.prototype.operatorToTaskMap = undefined;
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PSelector.prototype.prime = function(input) {
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var root = input || docRegister;
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if ( this.selector !== '' ) {
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return root.querySelectorAll(this.selector);
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}
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return [ root ];
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};
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PSelector.prototype.exec = function(input) {
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if ( this.invalid ) { return; }
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var nodes = this.prime(input);
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for ( var task of this.tasks ) {
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if ( nodes.length === 0 ) { break; }
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nodes = task.exec(nodes);
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}
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return nodes;
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};
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var logOne = function(details, selector) {
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loggerRegister.writeOne(
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details.tabId,
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'cosmetic',
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{ source: 'cosmetic', raw: '##^' + selector },
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'dom',
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details.url,
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null,
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details.hostname
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);
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};
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var applyProceduralSelector = function(details, selector) {
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var pselector = pselectors.get(selector);
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if ( pselector === undefined ) {
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pselector = new PSelector(JSON.parse(selector));
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pselectors.set(selector, pselector);
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}
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var nodes = pselector.exec(),
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i = nodes.length,
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modified = false;
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while ( i-- ) {
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var node = nodes[i];
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if ( node.parentNode !== null ) {
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node.parentNode.removeChild(node);
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modified = true;
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}
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}
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if ( modified && loggerRegister.isEnabled() ) {
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logOne(details, pselector.raw);
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}
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return modified;
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};
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var applyCSSSelector = function(details, selector) {
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var nodes = docRegister.querySelectorAll(selector),
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i = nodes.length,
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modified = false;
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while ( i-- ) {
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var node = nodes[i];
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if ( node.parentNode !== null ) {
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node.parentNode.removeChild(node);
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modified = true;
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}
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}
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if ( modified && loggerRegister.isEnabled() ) {
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logOne(details, selector);
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}
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return modified;
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};
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api.reset = function() {
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filterDB.clear();
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pselectors.clear();
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duplicates.clear();
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};
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api.freeze = function() {
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duplicates.clear();
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};
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api.compile = function(parsed, writer) {
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var selector = parsed.suffix.slice(1).trim(),
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compiled = µb.staticExtFilteringEngine.compileSelector(selector);
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if ( compiled === undefined ) { return; }
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// 1002 = html filtering
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writer.select(1002);
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// TODO: Mind negated hostnames, they are currently discarded.
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for ( var hostname of parsed.hostnames ) {
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if ( hostname.charCodeAt(0) === 0x7E /* '~' */ ) { continue; }
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var domain = µb.URI.domainFromHostname(hostname);
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writer.push([
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compiled.charCodeAt(0) !== 0x7B /* '{' */ ? 64 : 65,
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parsed.exception ? '!' + domain : domain,
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hostname,
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compiled
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]);
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}
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};
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api.fromCompiledContent = function(reader) {
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// Don't bother loading filters if stream filtering is not supported.
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//if ( µb.canFilterResponseBody === false ) { return; }
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// 1002 = html filtering
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reader.select(1002);
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while ( reader.next() ) {
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var fingerprint = reader.fingerprint();
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if ( duplicates.has(fingerprint) ) { continue; }
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duplicates.add(fingerprint);
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var args = reader.args();
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filterDB.add(args[1], {
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type: args[0],
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hostname: args[2],
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selector: args[3]
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});
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}
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};
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api.retrieve = function(request) {
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var hostname = request.hostname;
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// https://github.com/gorhill/uBlock/issues/2835
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// Do not filter if the site is under an `allow` rule.
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if (
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µb.userSettings.advancedUserEnabled &&
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µb.sessionFirewall.evaluateCellZY(hostname, hostname, '*') === 2
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) {
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return;
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}
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var out = [];
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if ( request.domain !== '' ) {
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filterDB.retrieve(request.domain, hostname, out);
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filterDB.retrieve(request.entity, request.entity, out);
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}
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filterDB.retrieve('', hostname, out);
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// TODO: handle exceptions.
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if ( out.length !== 0 ) {
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return out;
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}
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};
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api.apply = function(doc, details) {
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docRegister = doc;
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loggerRegister = µb.logger;
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var modified = false;
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for ( var entry of details.selectors ) {
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if ( entry.type === 64 ) {
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if ( applyCSSSelector(details, entry.selector) ) {
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modified = true;
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}
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} else {
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if ( applyProceduralSelector(details, entry.selector) ) {
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modified = true;
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}
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}
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}
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docRegister = loggerRegister = undefined;
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return modified;
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};
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api.toSelfie = function() {
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return filterDB.toSelfie();
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};
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api.fromSelfie = function(selfie) {
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filterDB = new µb.staticExtFilteringEngine.HostnameBasedDB(selfie);
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pselectors.clear();
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};
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// TODO: Following methods is useful only to legacy Firefox. This can be
|
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// removed once support for legacy Firefox is dropped. The only care
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// at this point is for the code to work, not to be efficient.
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// Only `script:has-text` selectors are considered.
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api.retrieveScriptTagHostnames = function() {
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var out = new Set();
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for ( var entry of filterDB ) {
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if ( entry.type !== 65 ) { continue; }
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var o = JSON.parse(entry.selector);
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if (
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o.tasks.length === 1 &&
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o.tasks[0].length === 2 &&
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o.tasks[0][0] === ':has-text'
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) {
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out.add(entry.hostname);
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}
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}
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if ( out.size !== 0 ) {
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return Array.from(out);
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}
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};
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api.retrieveScriptTagRegex = function(domain, hostname) {
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var entries = api.retrieve({
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hostname: hostname,
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domain: domain,
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entity: µb.URI.entityFromDomain(domain)
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});
|
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if ( entries === undefined ) { return; }
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var out = new Set();
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for ( var entry of entries ) {
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if ( entry.type !== 65 ) { continue; }
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var o = JSON.parse(entry.selector);
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||||
if (
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||||
o.tasks.length === 1 &&
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||||
o.tasks[0].length === 2 &&
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||||
o.tasks[0][0] === ':has-text'
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) {
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out.add(o.tasks[0][1]);
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||||
}
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||||
}
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if ( out.size !== 0 ) {
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return Array.from(out).join('|');
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||||
}
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||||
};
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||||
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||||
return api;
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||||
})();
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||||
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||||
/******************************************************************************/
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||||
@ -102,7 +102,7 @@ var onMessage = function(request, sender, callback) {
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break;
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case 'compileCosmeticFilterSelector':
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response = µb.cosmeticFilteringEngine.compileSelector(request.selector);
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response = µb.staticExtFilteringEngine.compileSelector(request.selector);
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break;
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case 'cosmeticFiltersInjected':
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@ -465,7 +465,7 @@ var onMessage = function(request, sender, callback) {
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var µb = µBlock,
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response,
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tabId, frameId,
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||||
pageStore;
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||||
pageStore = null;
|
||||
|
||||
if ( sender && sender.tab ) {
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||||
tabId = sender.tab.id;
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||||
@ -491,21 +491,33 @@ var onMessage = function(request, sender, callback) {
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||||
break;
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||||
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||||
case 'retrieveContentScriptParameters':
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if ( pageStore && pageStore.getNetFilteringSwitch() ) {
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||||
response = {
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collapseBlocked: µb.userSettings.collapseBlocked,
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noCosmeticFiltering: pageStore.noCosmeticFiltering === true,
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noGenericCosmeticFiltering:
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pageStore.noGenericCosmeticFiltering === true
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};
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request.tabId = tabId;
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request.frameId = frameId;
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||||
response.specificCosmeticFilters =
|
||||
µb.cosmeticFilteringEngine
|
||||
.retrieveDomainSelectors(request, response);
|
||||
if ( request.isRootFrame && µb.logger.isEnabled() ) {
|
||||
µb.logCosmeticFilters(tabId);
|
||||
}
|
||||
if (
|
||||
pageStore === null ||
|
||||
pageStore.getNetFilteringSwitch() === false ||
|
||||
!request.url
|
||||
) {
|
||||
break;
|
||||
}
|
||||
response = {
|
||||
collapseBlocked: µb.userSettings.collapseBlocked,
|
||||
noCosmeticFiltering: pageStore.noCosmeticFiltering === true,
|
||||
noGenericCosmeticFiltering:
|
||||
pageStore.noGenericCosmeticFiltering === true
|
||||
};
|
||||
request.tabId = tabId;
|
||||
request.frameId = frameId;
|
||||
request.hostname = µb.URI.hostnameFromURI(request.url);
|
||||
request.domain = µb.URI.domainFromHostname(request.hostname);
|
||||
request.entity = µb.URI.entityFromDomain(request.domain);
|
||||
response.specificCosmeticFilters =
|
||||
µb.cosmeticFilteringEngine.retrieveDomainSelectors(request, response);
|
||||
// If response body filtering is supported, than the scriptlets have
|
||||
// already been injected.
|
||||
if ( µb.canFilterResponseBody === false ) {
|
||||
response.scriptlets = µb.scriptletFilteringEngine.retrieve(request);
|
||||
}
|
||||
if ( request.isRootFrame && µb.logger.isEnabled() ) {
|
||||
µb.logCosmeticFilters(tabId);
|
||||
}
|
||||
break;
|
||||
|
||||
|
||||
@ -26,7 +26,26 @@
|
||||
/******************************************************************************/
|
||||
|
||||
var listEntries = Object.create(null),
|
||||
filterClassSeparator = '\n/* end of network - start of cosmetic */\n';
|
||||
reBlockStart = /^#block-start-(\d+)\n/gm;
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
var extractBlocks = function(content, begId, endId) {
|
||||
reBlockStart.lastIndex = 0;
|
||||
var out = [];
|
||||
var match = reBlockStart.exec(content);
|
||||
while ( match !== null ) {
|
||||
var beg = match.index + match[0].length;
|
||||
var blockId = parseInt(match[1], 10);
|
||||
if ( blockId >= begId && blockId < endId ) {
|
||||
var end = content.indexOf('#block-end-' + match[1], beg);
|
||||
out.push(content.slice(beg, end));
|
||||
reBlockStart.lastIndex = end;
|
||||
}
|
||||
match = reBlockStart.exec(content);
|
||||
}
|
||||
return out.join('\n');
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
@ -34,13 +53,11 @@ var fromNetFilter = function(details) {
|
||||
var lists = [],
|
||||
compiledFilter = details.compiledFilter,
|
||||
entry, content, pos, notFound;
|
||||
|
||||
for ( var assetKey in listEntries ) {
|
||||
entry = listEntries[assetKey];
|
||||
if ( entry === undefined ) { continue; }
|
||||
content = entry.content.slice(
|
||||
0,
|
||||
entry.content.indexOf(filterClassSeparator)
|
||||
);
|
||||
content = extractBlocks(entry.content, 0, 1000);
|
||||
pos = 0;
|
||||
for (;;) {
|
||||
pos = content.indexOf(compiledFilter, pos);
|
||||
@ -96,7 +113,7 @@ var fromNetFilter = function(details) {
|
||||
// the various compiled versions.
|
||||
|
||||
var fromCosmeticFilter = function(details) {
|
||||
var match = /^#@?#/.exec(details.rawFilter),
|
||||
var match = /^#@?#\^?/.exec(details.rawFilter),
|
||||
prefix = match[0],
|
||||
selector = details.rawFilter.slice(prefix.length);
|
||||
|
||||
@ -138,15 +155,14 @@ var fromCosmeticFilter = function(details) {
|
||||
}
|
||||
|
||||
var response = Object.create(null),
|
||||
assetKey, entry, content, found, beg, end, fargs;
|
||||
assetKey, entry, content,
|
||||
found, beg, end,
|
||||
fargs, isProcedural;
|
||||
|
||||
for ( assetKey in listEntries ) {
|
||||
entry = listEntries[assetKey];
|
||||
if ( entry === undefined ) { continue; }
|
||||
content = entry.content.slice(
|
||||
entry.content.indexOf(filterClassSeparator) +
|
||||
filterClassSeparator.length
|
||||
);
|
||||
content = extractBlocks(entry.content, 1000, 2000);
|
||||
found = undefined;
|
||||
while ( (match = reNeedle.exec(content)) !== null ) {
|
||||
beg = content.lastIndexOf('\n', match.index);
|
||||
@ -194,12 +210,15 @@ var fromCosmeticFilter = function(details) {
|
||||
found = prefix + selector;
|
||||
}
|
||||
break;
|
||||
case 6:
|
||||
case 8:
|
||||
case 9:
|
||||
case 32:
|
||||
case 64:
|
||||
case 65:
|
||||
isProcedural = fargs[3].charCodeAt(0) === 0x7B;
|
||||
if (
|
||||
fargs[0] !== 9 && fargs[3] !== selector ||
|
||||
fargs[0] === 9 && JSON.parse(fargs[3]).raw !== selector
|
||||
isProcedural === false && fargs[3] !== selector ||
|
||||
isProcedural && JSON.parse(fargs[3]).raw !== selector
|
||||
) {
|
||||
break;
|
||||
}
|
||||
|
||||
@ -35,22 +35,21 @@ if ( typeof vAPI.rpcReceiver !== 'object' ) {
|
||||
|
||||
vAPI.rpcReceiver.getScriptTagHostnames = function() {
|
||||
var µb = µBlock;
|
||||
var cfe = µb.cosmeticFilteringEngine;
|
||||
if ( !cfe ) { return; }
|
||||
return cfe.retrieveScriptTagHostnames();
|
||||
if ( µb.htmlFilteringEngine ) {
|
||||
return µb.htmlFilteringEngine.retrieveScriptTagHostnames();
|
||||
}
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
vAPI.rpcReceiver.getScriptTagFilters = function(details) {
|
||||
var µb = µBlock;
|
||||
var cfe = µb.cosmeticFilteringEngine;
|
||||
if ( !cfe ) { return; }
|
||||
if ( !µb.htmlFilteringEngine ) { return; }
|
||||
// Fetching the script tag filters first: assuming it is faster than
|
||||
// checking whether the site is whitelisted.
|
||||
var hostname = details.frameHostname;
|
||||
var r = cfe.retrieveScriptTagRegex(
|
||||
µb.URI.domainFromHostname(hostname) || hostname,
|
||||
var r = µb.htmlFilteringEngine.retrieveScriptTagRegex(
|
||||
µb.URI.domainFromHostname(hostname),
|
||||
hostname
|
||||
);
|
||||
// https://github.com/gorhill/uBlock/issues/838
|
||||
|
||||
270
src/js/scriptlet-filtering.js
Normal file
270
src/js/scriptlet-filtering.js
Normal file
@ -0,0 +1,270 @@
|
||||
/*******************************************************************************
|
||||
|
||||
uBlock Origin - a browser extension to block requests.
|
||||
Copyright (C) 2017 Raymond Hill
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see {http://www.gnu.org/licenses/}.
|
||||
|
||||
Home: https://github.com/gorhill/uBlock
|
||||
*/
|
||||
|
||||
'use strict';
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
µBlock.scriptletFilteringEngine = (function() {
|
||||
var api = {};
|
||||
|
||||
var µb = µBlock,
|
||||
scriptletDB = new µb.staticExtFilteringEngine.HostnameBasedDB(),
|
||||
duplicates = new Set(),
|
||||
scriptletCache = new µb.MRUCache(32),
|
||||
exceptionsRegister = new Set(),
|
||||
scriptletsRegister = new Map(),
|
||||
reEscapeScriptArg = /[\\'"]/g;
|
||||
|
||||
var scriptletRemover = [
|
||||
'(function() {',
|
||||
' var c = document.currentScript, p = c && c.parentNode;',
|
||||
' if ( p ) { p.removeChild(c); }',
|
||||
'})();'
|
||||
].join('\n');
|
||||
|
||||
|
||||
var lookupScriptlet = function(raw, reng, toInject) {
|
||||
if ( toInject.has(raw) ) { return; }
|
||||
if ( scriptletCache.resetTime < reng.modifyTime ) {
|
||||
scriptletCache.reset();
|
||||
}
|
||||
var content = scriptletCache.lookup(raw);
|
||||
if ( content === undefined ) {
|
||||
var token, args,
|
||||
pos = raw.indexOf(',');
|
||||
if ( pos === -1 ) {
|
||||
token = raw;
|
||||
} else {
|
||||
token = raw.slice(0, pos).trim();
|
||||
args = raw.slice(pos + 1).trim();
|
||||
}
|
||||
content = reng.resourceContentFromName(token, 'application/javascript');
|
||||
if ( !content ) { return; }
|
||||
if ( args ) {
|
||||
content = patchScriptlet(content, args);
|
||||
if ( !content ) { return; }
|
||||
}
|
||||
scriptletCache.add(raw, content);
|
||||
}
|
||||
toInject.set(raw, content);
|
||||
};
|
||||
|
||||
// Fill template placeholders. Return falsy if:
|
||||
// - At least one argument contains anything else than /\w/ and `.`
|
||||
|
||||
var patchScriptlet = function(content, args) {
|
||||
var i = 1,
|
||||
pos, arg;
|
||||
while ( args !== '' ) {
|
||||
pos = args.indexOf(',');
|
||||
if ( pos === -1 ) { pos = args.length; }
|
||||
arg = args.slice(0, pos).trim().replace(reEscapeScriptArg, '\\$&');
|
||||
content = content.replace('{{' + i + '}}', arg);
|
||||
args = args.slice(pos + 1).trim();
|
||||
i++;
|
||||
}
|
||||
return content;
|
||||
};
|
||||
|
||||
var logOne = function(isException, token, details) {
|
||||
µb.logger.writeOne(
|
||||
details.tabId,
|
||||
'cosmetic',
|
||||
{
|
||||
source: 'cosmetic',
|
||||
raw: (isException ? '#@#' : '##') + 'script:inject(' + token + ')'
|
||||
},
|
||||
'dom',
|
||||
details.url,
|
||||
null,
|
||||
details.hostname
|
||||
);
|
||||
};
|
||||
|
||||
api.reset = function() {
|
||||
scriptletDB.clear();
|
||||
duplicates.clear();
|
||||
};
|
||||
|
||||
api.freeze = function() {
|
||||
duplicates.clear();
|
||||
};
|
||||
|
||||
api.compile = function(parsed, writer) {
|
||||
// 1001 = scriptlet injection
|
||||
writer.select(1001);
|
||||
|
||||
// Only exception filters are allowed to be global.
|
||||
|
||||
if ( parsed.hostnames.length === 0 ) {
|
||||
if ( parsed.exception ) {
|
||||
writer.push([ 32, '!', '', parsed.suffix ]);
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/3375
|
||||
// Ignore instances of exception filter with negated hostnames,
|
||||
// because there is no way to create an exception to an exception.
|
||||
|
||||
var µburi = µb.URI;
|
||||
|
||||
for ( var hostname of parsed.hostnames ) {
|
||||
var negated = hostname.charCodeAt(0) === 0x7E /* '~' */;
|
||||
if ( negated ) {
|
||||
hostname = hostname.slice(1);
|
||||
}
|
||||
var hash = µburi.domainFromHostname(hostname);
|
||||
if ( parsed.exception ) {
|
||||
if ( negated ) { continue; }
|
||||
hash = '!' + hash;
|
||||
} else if ( negated ) {
|
||||
hash = '!' + hash;
|
||||
}
|
||||
writer.push([ 32, hash, hostname, parsed.suffix ]);
|
||||
}
|
||||
};
|
||||
|
||||
// 01234567890123456789
|
||||
// script:inject(token[, arg[, ...]])
|
||||
// ^ ^
|
||||
// 14 -1
|
||||
|
||||
api.fromCompiledContent = function(reader) {
|
||||
// 1001 = scriptlet injection
|
||||
reader.select(1001);
|
||||
|
||||
while ( reader.next() ) {
|
||||
var fingerprint = reader.fingerprint();
|
||||
if ( duplicates.has(fingerprint) ) { continue; }
|
||||
duplicates.add(fingerprint);
|
||||
var args = reader.args();
|
||||
if ( args.length < 4 ) { continue; }
|
||||
scriptletDB.add(
|
||||
args[1],
|
||||
{ hostname: args[2], token: args[3].slice(14, -1) }
|
||||
);
|
||||
}
|
||||
};
|
||||
|
||||
api.retrieve = function(request) {
|
||||
if ( scriptletDB.size === 0 ) { return; }
|
||||
if ( µb.hiddenSettings.ignoreScriptInjectFilters ) { return; }
|
||||
|
||||
var reng = µb.redirectEngine;
|
||||
if ( !reng ) { return; }
|
||||
|
||||
var hostname = request.hostname;
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/2835
|
||||
// Do not inject scriptlets if the site is under an `allow` rule.
|
||||
if (
|
||||
µb.userSettings.advancedUserEnabled &&
|
||||
µb.sessionFirewall.evaluateCellZY(hostname, hostname, '*') === 2
|
||||
) {
|
||||
return;
|
||||
}
|
||||
|
||||
var domain = request.domain,
|
||||
entity = request.entity,
|
||||
entries, entry;
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/1954
|
||||
// Implicit
|
||||
var hn = hostname;
|
||||
for (;;) {
|
||||
lookupScriptlet(hn + '.js', reng, scriptletsRegister);
|
||||
if ( hn === domain ) { break; }
|
||||
var pos = hn.indexOf('.');
|
||||
if ( pos === -1 ) { break; }
|
||||
hn = hn.slice(pos + 1);
|
||||
}
|
||||
if ( entity !== '' ) {
|
||||
lookupScriptlet(entity + '.js', reng, scriptletsRegister);
|
||||
}
|
||||
|
||||
// Explicit
|
||||
entries = [];
|
||||
if ( domain !== '' ) {
|
||||
scriptletDB.retrieve(domain, hostname, entries);
|
||||
scriptletDB.retrieve(entity, entity, entries);
|
||||
}
|
||||
scriptletDB.retrieve('', hostname, entries);
|
||||
for ( entry of entries ) {
|
||||
lookupScriptlet(entry.token, reng, scriptletsRegister);
|
||||
}
|
||||
|
||||
if ( scriptletsRegister.size === 0 ) { return; }
|
||||
|
||||
// Collect exception filters.
|
||||
entries = [];
|
||||
if ( domain !== '' ) {
|
||||
scriptletDB.retrieve('!' + domain, hostname, entries);
|
||||
scriptletDB.retrieve('!' + entity, entity, entries);
|
||||
}
|
||||
scriptletDB.retrieve('!', hostname, entries);
|
||||
for ( entry of entries ) {
|
||||
exceptionsRegister.add(entry.token);
|
||||
}
|
||||
|
||||
// Return an array of scriptlets, and log results if needed.
|
||||
var out = [],
|
||||
logger = µb.logger.isEnabled() ? µb.logger : null,
|
||||
isException;
|
||||
for ( entry of scriptletsRegister ) {
|
||||
if ( (isException = exceptionsRegister.has(entry[0])) === false ) {
|
||||
out.push(entry[1]);
|
||||
}
|
||||
if ( logger !== null ) {
|
||||
logOne(isException, entry[0], request);
|
||||
}
|
||||
}
|
||||
|
||||
scriptletsRegister.clear();
|
||||
exceptionsRegister.clear();
|
||||
|
||||
if ( out.length === 0 ) { return; }
|
||||
|
||||
out.push(scriptletRemover);
|
||||
|
||||
return out.join('\n');
|
||||
};
|
||||
|
||||
api.apply = function(doc, details) {
|
||||
var script = doc.createElement('script');
|
||||
script.textContent = details.scriptlets;
|
||||
doc.head.insertBefore(script, doc.head.firstChild);
|
||||
return true;
|
||||
};
|
||||
|
||||
api.toSelfie = function() {
|
||||
return scriptletDB.toSelfie();
|
||||
};
|
||||
|
||||
api.fromSelfie = function(selfie) {
|
||||
scriptletDB = new µb.staticExtFilteringEngine.HostnameBasedDB(selfie);
|
||||
};
|
||||
|
||||
return api;
|
||||
})();
|
||||
|
||||
/******************************************************************************/
|
||||
@ -39,7 +39,7 @@ vAPI.app.onShutdown = function() {
|
||||
µb.staticFilteringReverseLookup.shutdown();
|
||||
µb.assets.updateStop();
|
||||
µb.staticNetFilteringEngine.reset();
|
||||
µb.cosmeticFilteringEngine.reset();
|
||||
µb.staticExtFilteringEngine.reset();
|
||||
µb.sessionFirewall.reset();
|
||||
µb.permanentFirewall.reset();
|
||||
µb.permanentFirewall.reset();
|
||||
@ -139,7 +139,7 @@ var onSelfieReady = function(selfie) {
|
||||
µb.availableFilterLists = selfie.availableFilterLists;
|
||||
µb.staticNetFilteringEngine.fromSelfie(selfie.staticNetFilteringEngine);
|
||||
µb.redirectEngine.fromSelfie(selfie.redirectEngine);
|
||||
µb.cosmeticFilteringEngine.fromSelfie(selfie.cosmeticFilteringEngine);
|
||||
µb.staticExtFilteringEngine.fromSelfie(selfie.staticExtFilteringEngine);
|
||||
return true;
|
||||
};
|
||||
|
||||
|
||||
680
src/js/static-ext-filtering.js
Normal file
680
src/js/static-ext-filtering.js
Normal file
@ -0,0 +1,680 @@
|
||||
/*******************************************************************************
|
||||
|
||||
uBlock Origin - a browser extension to block requests.
|
||||
Copyright (C) 2017 Raymond Hill
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see {http://www.gnu.org/licenses/}.
|
||||
|
||||
Home: https://github.com/gorhill/uBlock
|
||||
*/
|
||||
|
||||
/* global punycode */
|
||||
|
||||
'use strict';
|
||||
|
||||
/*******************************************************************************
|
||||
|
||||
All static extended filters are of the form:
|
||||
|
||||
field 1: one hostname, or a list of comma-separated hostnames
|
||||
field 2: `##` or `#@#`
|
||||
field 3: selector
|
||||
|
||||
The purpose of the static extended filtering engine is to coarse-parse and
|
||||
dispatch to appropriate specialized filtering engines. There are currently
|
||||
three specialized filtering engines:
|
||||
|
||||
- cosmetic filtering (aka "element hiding" in Adblock Plus)
|
||||
- scriptlet injection: selector starts with `script:inject`
|
||||
- html filtering: selector starts with `^`
|
||||
|
||||
Depending on the specialized filtering engine, field 1 may or may not be
|
||||
optional.
|
||||
|
||||
The static extended filtering engine also offers parsing capabilities which
|
||||
are available to all other specialized fitlering engines. For example,
|
||||
cosmetic and html filtering can ask the extended filtering engine to
|
||||
compile/validate selectors.
|
||||
|
||||
**/
|
||||
|
||||
µBlock.staticExtFilteringEngine = (function() {
|
||||
var µb = µBlock,
|
||||
reHostnameSeparator = /\s*,\s*/,
|
||||
reHasUnicode = /[^\x00-\x7F]/,
|
||||
reIsRegexLiteral = /^\/.+\/$/,
|
||||
emptyArray = [],
|
||||
parsed = {
|
||||
hostnames: [],
|
||||
exception: false,
|
||||
suffix: ''
|
||||
};
|
||||
|
||||
var isValidCSSSelector = (function() {
|
||||
var div = document.createElement('div'),
|
||||
matchesFn;
|
||||
// Keep in mind:
|
||||
// https://github.com/gorhill/uBlock/issues/693
|
||||
// https://github.com/gorhill/uBlock/issues/1955
|
||||
if ( div.matches instanceof Function ) {
|
||||
matchesFn = div.matches.bind(div);
|
||||
} else if ( div.mozMatchesSelector instanceof Function ) {
|
||||
matchesFn = div.mozMatchesSelector.bind(div);
|
||||
} else if ( div.webkitMatchesSelector instanceof Function ) {
|
||||
matchesFn = div.webkitMatchesSelector.bind(div);
|
||||
} else if ( div.msMatchesSelector instanceof Function ) {
|
||||
matchesFn = div.msMatchesSelector.bind(div);
|
||||
} else {
|
||||
matchesFn = div.querySelector.bind(div);
|
||||
}
|
||||
// https://github.com/gorhill/uBlock/issues/3111
|
||||
// Workaround until https://bugzilla.mozilla.org/show_bug.cgi?id=1406817
|
||||
// is fixed.
|
||||
try {
|
||||
matchesFn(':scope');
|
||||
} catch (ex) {
|
||||
matchesFn = div.querySelector.bind(div);
|
||||
}
|
||||
return function(s) {
|
||||
try {
|
||||
matchesFn(s + ', ' + s + ':not(#foo)');
|
||||
} catch (ex) {
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
};
|
||||
})();
|
||||
|
||||
|
||||
var isBadRegex = function(s) {
|
||||
try {
|
||||
void new RegExp(s);
|
||||
} catch (ex) {
|
||||
isBadRegex.message = ex.toString();
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
};
|
||||
|
||||
var translateAdguardCSSInjectionFilter = function(suffix) {
|
||||
var matches = /^([^{]+)\{([^}]+)\}$/.exec(suffix);
|
||||
if ( matches === null ) { return ''; }
|
||||
return matches[1].trim() + ':style(' + matches[2].trim() + ')';
|
||||
};
|
||||
|
||||
var toASCIIHostname = function(hostname) {
|
||||
if ( hostname.charCodeAt(0) === 0x7E /* '~' */ ) {
|
||||
return '~' + punycode.toASCII(hostname.slice(1));
|
||||
}
|
||||
return punycode.toASCII(hostname);
|
||||
};
|
||||
|
||||
var compileProceduralSelector = (function() {
|
||||
var reOperatorParser = new RegExp([
|
||||
'(:(?:',
|
||||
[
|
||||
'-abp-contains',
|
||||
'-abp-has',
|
||||
'contains',
|
||||
'has',
|
||||
'has-text',
|
||||
'if',
|
||||
'if-not',
|
||||
'matches-css',
|
||||
'matches-css-after',
|
||||
'matches-css-before',
|
||||
'xpath'
|
||||
].join('|'),
|
||||
'))\\(.+\\)$'
|
||||
].join(''));
|
||||
|
||||
var reFirstParentheses = /^\(*/,
|
||||
reLastParentheses = /\)*$/,
|
||||
reEscapeRegex = /[.*+?^${}()|[\]\\]/g,
|
||||
reNeedScope = /^\s*[+>~]/;
|
||||
|
||||
var lastProceduralSelector = '',
|
||||
lastProceduralSelectorCompiled,
|
||||
regexToRawValue = new Map();
|
||||
|
||||
var compileCSSSelector = function(s) {
|
||||
// https://github.com/AdguardTeam/ExtendedCss/issues/31#issuecomment-302391277
|
||||
// Prepend `:scope ` if needed.
|
||||
if ( reNeedScope.test(s) ) {
|
||||
s = ':scope ' + s;
|
||||
}
|
||||
if ( isValidCSSSelector(s) ) {
|
||||
return s;
|
||||
}
|
||||
};
|
||||
|
||||
var compileText = function(s) {
|
||||
var reText;
|
||||
if ( reIsRegexLiteral.test(s) ) {
|
||||
reText = s.slice(1, -1);
|
||||
if ( isBadRegex(reText) ) { return; }
|
||||
} else {
|
||||
reText = s.replace(reEscapeRegex, '\\$&');
|
||||
regexToRawValue.set(reText, s);
|
||||
}
|
||||
return reText;
|
||||
};
|
||||
|
||||
var compileCSSDeclaration = function(s) {
|
||||
var name, value, reText,
|
||||
pos = s.indexOf(':');
|
||||
if ( pos === -1 ) { return; }
|
||||
name = s.slice(0, pos).trim();
|
||||
value = s.slice(pos + 1).trim();
|
||||
if ( reIsRegexLiteral.test(value) ) {
|
||||
reText = value.slice(1, -1);
|
||||
if ( isBadRegex(reText) ) { return; }
|
||||
} else {
|
||||
reText = '^' + value.replace(reEscapeRegex, '\\$&') + '$';
|
||||
regexToRawValue.set(reText, value);
|
||||
}
|
||||
return { name: name, value: reText };
|
||||
};
|
||||
|
||||
var compileConditionalSelector = function(s) {
|
||||
// https://github.com/AdguardTeam/ExtendedCss/issues/31#issuecomment-302391277
|
||||
// Prepend `:scope ` if needed.
|
||||
if ( reNeedScope.test(s) ) {
|
||||
s = ':scope ' + s;
|
||||
}
|
||||
return compile(s);
|
||||
};
|
||||
|
||||
var compileXpathExpression = function(s) {
|
||||
try {
|
||||
document.createExpression(s, null);
|
||||
} catch (e) {
|
||||
return;
|
||||
}
|
||||
return s;
|
||||
};
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/2793
|
||||
var normalizedOperators = new Map([
|
||||
[ ':-abp-contains', ':has-text' ],
|
||||
[ ':-abp-has', ':if' ],
|
||||
[ ':contains', ':has-text' ]
|
||||
]);
|
||||
|
||||
var compileArgument = new Map([
|
||||
[ ':has', compileCSSSelector ],
|
||||
[ ':has-text', compileText ],
|
||||
[ ':if', compileConditionalSelector ],
|
||||
[ ':if-not', compileConditionalSelector ],
|
||||
[ ':matches-css', compileCSSDeclaration ],
|
||||
[ ':matches-css-after', compileCSSDeclaration ],
|
||||
[ ':matches-css-before', compileCSSDeclaration ],
|
||||
[ ':xpath', compileXpathExpression ]
|
||||
]);
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/2793#issuecomment-333269387
|
||||
// Normalize (somewhat) the stringified version of procedural
|
||||
// cosmetic filters -- this increase the likelihood of detecting
|
||||
// duplicates given that uBO is able to understand syntax specific
|
||||
// to other blockers.
|
||||
// The normalized string version is what is reported in the logger,
|
||||
// by design.
|
||||
var decompile = function(compiled) {
|
||||
var raw = [ compiled.selector ],
|
||||
tasks = compiled.tasks,
|
||||
value;
|
||||
if ( Array.isArray(tasks) ) {
|
||||
for ( var i = 0, n = tasks.length, task; i < n; i++ ) {
|
||||
task = tasks[i];
|
||||
switch ( task[0] ) {
|
||||
case ':has':
|
||||
case ':xpath':
|
||||
raw.push(task[0], '(', task[1], ')');
|
||||
break;
|
||||
case ':has-text':
|
||||
value = regexToRawValue.get(task[1]);
|
||||
if ( value === undefined ) {
|
||||
value = '/' + task[1] + '/';
|
||||
}
|
||||
raw.push(task[0], '(', value, ')');
|
||||
break;
|
||||
case ':matches-css':
|
||||
case ':matches-css-after':
|
||||
case ':matches-css-before':
|
||||
value = regexToRawValue.get(task[1].value);
|
||||
if ( value === undefined ) {
|
||||
value = '/' + task[1].value + '/';
|
||||
}
|
||||
raw.push(task[0], '(', task[1].name, ': ', value, ')');
|
||||
break;
|
||||
case ':if':
|
||||
case ':if-not':
|
||||
raw.push(task[0], '(', decompile(task[1]), ')');
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
return raw.join('');
|
||||
};
|
||||
|
||||
var compile = function(raw) {
|
||||
var matches = reOperatorParser.exec(raw);
|
||||
if ( matches === null ) {
|
||||
if ( isValidCSSSelector(raw) ) { return { selector: raw }; }
|
||||
return;
|
||||
}
|
||||
var tasks = [],
|
||||
firstOperand = raw.slice(0, matches.index),
|
||||
currentOperator = matches[1],
|
||||
selector = raw.slice(matches.index + currentOperator.length),
|
||||
currentArgument = '', nextOperand, nextOperator,
|
||||
depth = 0, opening, closing;
|
||||
if (
|
||||
firstOperand !== '' &&
|
||||
isValidCSSSelector(firstOperand) === false
|
||||
) {
|
||||
return;
|
||||
}
|
||||
for (;;) {
|
||||
matches = reOperatorParser.exec(selector);
|
||||
if ( matches !== null ) {
|
||||
nextOperand = selector.slice(0, matches.index);
|
||||
nextOperator = matches[1];
|
||||
} else {
|
||||
nextOperand = selector;
|
||||
nextOperator = '';
|
||||
}
|
||||
opening = reFirstParentheses.exec(nextOperand)[0].length;
|
||||
closing = reLastParentheses.exec(nextOperand)[0].length;
|
||||
if ( opening > closing ) {
|
||||
if ( depth === 0 ) { currentArgument = ''; }
|
||||
depth += 1;
|
||||
} else if ( closing > opening && depth > 0 ) {
|
||||
depth -= 1;
|
||||
if ( depth === 0 ) {
|
||||
nextOperand = currentArgument + nextOperand;
|
||||
}
|
||||
}
|
||||
if ( depth !== 0 ) {
|
||||
currentArgument += nextOperand + nextOperator;
|
||||
} else {
|
||||
currentOperator =
|
||||
normalizedOperators.get(currentOperator) ||
|
||||
currentOperator;
|
||||
currentArgument =
|
||||
compileArgument.get(currentOperator)(
|
||||
nextOperand.slice(1, -1)
|
||||
);
|
||||
if ( currentArgument === undefined ) { return; }
|
||||
tasks.push([ currentOperator, currentArgument ]);
|
||||
currentOperator = nextOperator;
|
||||
}
|
||||
if ( nextOperator === '' ) { break; }
|
||||
selector = selector.slice(matches.index + nextOperator.length);
|
||||
}
|
||||
if ( tasks.length === 0 || depth !== 0 ) { return; }
|
||||
return { selector: firstOperand, tasks: tasks };
|
||||
};
|
||||
|
||||
var entryPoint = function(raw) {
|
||||
if ( raw === lastProceduralSelector ) {
|
||||
return lastProceduralSelectorCompiled;
|
||||
}
|
||||
lastProceduralSelector = raw;
|
||||
var compiled = compile(raw);
|
||||
if ( compiled !== undefined ) {
|
||||
compiled.raw = decompile(compiled);
|
||||
compiled = JSON.stringify(compiled);
|
||||
}
|
||||
lastProceduralSelectorCompiled = compiled;
|
||||
return compiled;
|
||||
};
|
||||
|
||||
entryPoint.reset = function() {
|
||||
regexToRawValue = new Map();
|
||||
lastProceduralSelector = '';
|
||||
lastProceduralSelectorCompiled = undefined;
|
||||
};
|
||||
|
||||
return entryPoint;
|
||||
})();
|
||||
|
||||
//--------------------------------------------------------------------------
|
||||
// Public API
|
||||
//--------------------------------------------------------------------------
|
||||
|
||||
var api = {};
|
||||
|
||||
//--------------------------------------------------------------------------
|
||||
// Public classes
|
||||
//--------------------------------------------------------------------------
|
||||
|
||||
api.HostnameBasedDB = function(selfie) {
|
||||
if ( selfie !== undefined ) {
|
||||
this.db = new Map(selfie.map);
|
||||
this.size = selfie.size;
|
||||
} else {
|
||||
this.db = new Map();
|
||||
this.size = 0;
|
||||
}
|
||||
};
|
||||
|
||||
api.HostnameBasedDB.prototype = {
|
||||
add: function(hash, entry) {
|
||||
var bucket = this.db.get(hash);
|
||||
if ( bucket === undefined ) {
|
||||
this.db.set(hash, entry);
|
||||
} else if ( Array.isArray(bucket) ) {
|
||||
bucket.push(entry);
|
||||
} else {
|
||||
this.db.set(hash, [ bucket, entry ]);
|
||||
}
|
||||
this.size += 1;
|
||||
},
|
||||
clear: function() {
|
||||
this.db.clear();
|
||||
this.size = 0;
|
||||
},
|
||||
retrieve: function(hash, hostname, out) {
|
||||
var bucket = this.db.get(hash);
|
||||
if ( bucket === undefined ) { return; }
|
||||
if ( Array.isArray(bucket) === false ) {
|
||||
if ( hostname.endsWith(bucket.hostname) ) { out.push(bucket); }
|
||||
return;
|
||||
}
|
||||
var i = bucket.length;
|
||||
while ( i-- ) {
|
||||
var entry = bucket[i];
|
||||
if ( hostname.endsWith(entry.hostname) ) { out.push(entry); }
|
||||
}
|
||||
},
|
||||
toSelfie: function() {
|
||||
return {
|
||||
map: Array.from(this.db),
|
||||
size: this.size
|
||||
};
|
||||
}
|
||||
};
|
||||
|
||||
api.HostnameBasedDB.prototype[Symbol.iterator] = (function() {
|
||||
var Iter = function(db) {
|
||||
this.mapIter = db.values();
|
||||
this.arrayIter = undefined;
|
||||
};
|
||||
Iter.prototype.next = function() {
|
||||
var result;
|
||||
if ( this.arrayIter !== undefined ) {
|
||||
result = this.arrayIter.next();
|
||||
if ( result.done === false ) { return result; }
|
||||
this.arrayIter = undefined;
|
||||
}
|
||||
result = this.mapIter.next();
|
||||
if ( result.done || Array.isArray(result.value) === false ) {
|
||||
return result;
|
||||
}
|
||||
this.arrayIter = result.value[Symbol.iterator]();
|
||||
return this.arrayIter.next(); // array should never be empty
|
||||
};
|
||||
return function() {
|
||||
return new Iter(this.db);
|
||||
};
|
||||
})();
|
||||
|
||||
//--------------------------------------------------------------------------
|
||||
// Public methods
|
||||
//--------------------------------------------------------------------------
|
||||
|
||||
api.reset = function() {
|
||||
compileProceduralSelector.reset();
|
||||
µb.cosmeticFilteringEngine.reset();
|
||||
µb.scriptletFilteringEngine.reset();
|
||||
µb.htmlFilteringEngine.reset();
|
||||
};
|
||||
|
||||
api.freeze = function() {
|
||||
compileProceduralSelector.reset();
|
||||
µb.cosmeticFilteringEngine.freeze();
|
||||
µb.scriptletFilteringEngine.freeze();
|
||||
µb.htmlFilteringEngine.freeze();
|
||||
};
|
||||
|
||||
// https://github.com/chrisaljoudi/uBlock/issues/1004
|
||||
// Detect and report invalid CSS selectors.
|
||||
|
||||
// Discard new ABP's `-abp-properties` directive until it is
|
||||
// implemented (if ever). Unlikely, see:
|
||||
// https://github.com/gorhill/uBlock/issues/1752
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/2624
|
||||
// Convert Adguard's `-ext-has='...'` into uBO's `:has(...)`.
|
||||
|
||||
api.compileSelector = (function() {
|
||||
var reAfterBeforeSelector = /^(.+?)(::?after|::?before)$/,
|
||||
reStyleSelector = /^(.+?):style\((.+?)\)$/,
|
||||
reStyleBad = /url\([^)]+\)/,
|
||||
reExtendedSyntax = /\[-(?:abp|ext)-[a-z-]+=(['"])(?:.+?)(?:\1)\]/,
|
||||
reExtendedSyntaxParser = /\[-(?:abp|ext)-([a-z-]+)=(['"])(.+?)\2\]/,
|
||||
div = document.createElement('div');
|
||||
|
||||
var normalizedExtendedSyntaxOperators = new Map([
|
||||
[ 'contains', ':has-text' ],
|
||||
[ 'has', ':if' ],
|
||||
[ 'matches-css', ':matches-css' ],
|
||||
[ 'matches-css-after', ':matches-css-after' ],
|
||||
[ 'matches-css-before', ':matches-css-before' ],
|
||||
]);
|
||||
|
||||
var isValidStyleProperty = function(cssText) {
|
||||
if ( reStyleBad.test(cssText) ) { return false; }
|
||||
div.style.cssText = cssText;
|
||||
if ( div.style.cssText === '' ) { return false; }
|
||||
div.style.cssText = '';
|
||||
return true;
|
||||
};
|
||||
|
||||
var entryPoint = function(raw) {
|
||||
var extendedSyntax = reExtendedSyntax.test(raw);
|
||||
if ( isValidCSSSelector(raw) && extendedSyntax === false ) {
|
||||
return raw;
|
||||
}
|
||||
|
||||
// We rarely reach this point -- majority of selectors are plain
|
||||
// CSS selectors.
|
||||
|
||||
var matches, operator;
|
||||
|
||||
// Supported Adguard/ABP advanced selector syntax: will translate into
|
||||
// uBO's syntax before further processing.
|
||||
// Mind unsupported advanced selector syntax, such as ABP's
|
||||
// `-abp-properties`.
|
||||
// Note: extended selector syntax has been deprecated in ABP, in favor
|
||||
// of the procedural one (i.e. `:operator(...)`). See
|
||||
// https://issues.adblockplus.org/ticket/5287
|
||||
if ( extendedSyntax ) {
|
||||
while ( (matches = reExtendedSyntaxParser.exec(raw)) !== null ) {
|
||||
operator = normalizedExtendedSyntaxOperators.get(matches[1]);
|
||||
if ( operator === undefined ) { return; }
|
||||
raw = raw.slice(0, matches.index) +
|
||||
operator + '(' + matches[3] + ')' +
|
||||
raw.slice(matches.index + matches[0].length);
|
||||
}
|
||||
return entryPoint(raw);
|
||||
}
|
||||
|
||||
var selector = raw,
|
||||
pseudoclass, style;
|
||||
|
||||
// `:style` selector?
|
||||
if ( (matches = reStyleSelector.exec(selector)) !== null ) {
|
||||
selector = matches[1];
|
||||
style = matches[2];
|
||||
}
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/2448
|
||||
// :after- or :before-based selector?
|
||||
if ( (matches = reAfterBeforeSelector.exec(selector)) ) {
|
||||
selector = matches[1];
|
||||
pseudoclass = matches[2];
|
||||
}
|
||||
|
||||
if ( style !== undefined || pseudoclass !== undefined ) {
|
||||
if ( isValidCSSSelector(selector) === false ) {
|
||||
return;
|
||||
}
|
||||
if ( pseudoclass !== undefined ) {
|
||||
selector += pseudoclass;
|
||||
}
|
||||
if ( style !== undefined ) {
|
||||
if ( isValidStyleProperty(style) === false ) { return; }
|
||||
return JSON.stringify({
|
||||
raw: raw,
|
||||
style: [ selector, style ]
|
||||
});
|
||||
}
|
||||
return JSON.stringify({
|
||||
raw: raw,
|
||||
pseudoclass: true
|
||||
});
|
||||
}
|
||||
|
||||
// Procedural selector?
|
||||
var compiled;
|
||||
if ( (compiled = compileProceduralSelector(raw)) ) {
|
||||
return compiled;
|
||||
}
|
||||
|
||||
µb.logger.writeOne(
|
||||
'',
|
||||
'error',
|
||||
'Cosmetic filtering – invalid filter: ' + raw
|
||||
);
|
||||
};
|
||||
|
||||
return entryPoint;
|
||||
})();
|
||||
|
||||
api.compile = function(raw, writer) {
|
||||
var lpos = raw.indexOf('#');
|
||||
if ( lpos === -1 ) { return false; }
|
||||
var rpos = lpos + 1;
|
||||
if ( raw.charCodeAt(rpos) !== 0x23 /* '#' */ ) {
|
||||
rpos = raw.indexOf('#', rpos + 1);
|
||||
if ( rpos === -1 ) { return false; }
|
||||
}
|
||||
|
||||
// Coarse-check that the anchor is valid.
|
||||
// `##`: l = 1
|
||||
// `#@#`, `#$#`, `#%#`, `#?#`: l = 2
|
||||
// `#@$#`, `#@%#`, `#@?#`: l = 3
|
||||
if ( (rpos - lpos) > 3 ) { return false; }
|
||||
|
||||
// Extract the selector.
|
||||
var suffix = parsed.suffix = raw.slice(rpos + 1).trim();
|
||||
if ( suffix.length === 0 ) { return false; }
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/952
|
||||
// Find out whether we are dealing with an Adguard-specific cosmetic
|
||||
// filter, and if so, translate it if supported, or discard it if not
|
||||
// supported.
|
||||
// We have an Adguard/ABP cosmetic filter if and only if the
|
||||
// character is `$`, `%` or `?`, otherwise it's not a cosmetic
|
||||
// filter.
|
||||
var cCode = raw.charCodeAt(rpos - 1);
|
||||
if ( cCode !== 0x23 /* '#' */ && cCode !== 0x40 /* '@' */ ) {
|
||||
// Adguard's scriptlet injection: not supported.
|
||||
if ( cCode === 0x25 /* '%' */ ) { return true; }
|
||||
// Not a known extended filter.
|
||||
if ( cCode !== 0x24 /* '$' */ && cCode !== 0x3F /* '?' */ ) {
|
||||
return false;
|
||||
}
|
||||
// Adguard's style injection: translate to uBO's format.
|
||||
if ( cCode === 0x24 /* '$' */ ) {
|
||||
suffix = translateAdguardCSSInjectionFilter(suffix);
|
||||
if ( suffix === '' ) { return true; }
|
||||
}
|
||||
}
|
||||
|
||||
// Exception filter?
|
||||
parsed.exception = raw.charCodeAt(lpos + 1) === 0x40 /* '@' */;
|
||||
|
||||
// Extract the hostname(s), punycode if required.
|
||||
if ( lpos === 0 ) {
|
||||
parsed.hostnames = emptyArray;
|
||||
} else {
|
||||
var prefix = raw.slice(0, lpos);
|
||||
parsed.hostnames = prefix.split(reHostnameSeparator);
|
||||
if ( reHasUnicode.test(prefix) ) {
|
||||
for ( var hostname of parsed.hostnames ) {
|
||||
parsed.hostnames = toASCIIHostname(hostname);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if ( suffix.startsWith('script:') ) {
|
||||
// Scriptlet injection engine.
|
||||
if ( suffix.startsWith('script:inject') ) {
|
||||
µb.scriptletFilteringEngine.compile(parsed, writer);
|
||||
return true;
|
||||
}
|
||||
// Script tag filtering: courtesy-conversion to HTML filtering.
|
||||
if ( parsed.suffix.startsWith('script:contains') ) {
|
||||
console.info(
|
||||
'uBO: ##script:contains(...) is deprecated, ' +
|
||||
'converting to ##^script:has-text(...)'
|
||||
);
|
||||
suffix = parsed.suffix = suffix.replace(
|
||||
/^script:contains/,
|
||||
'^script:has-text'
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
// HTML filtering engine.
|
||||
// TODO: evaluate converting Adguard's `$$` syntax into uBO's HTML
|
||||
// filtering syntax.
|
||||
if ( suffix.charCodeAt(0) === 0x5E /* '^' */ ) {
|
||||
µb.htmlFilteringEngine.compile(parsed, writer);
|
||||
return true;
|
||||
}
|
||||
|
||||
// Cosmetic filtering engine.
|
||||
µb.cosmeticFilteringEngine.compile(parsed, writer);
|
||||
return true;
|
||||
};
|
||||
|
||||
api.fromCompiledContent = function(reader, options) {
|
||||
µb.cosmeticFilteringEngine.fromCompiledContent(reader, options);
|
||||
µb.scriptletFilteringEngine.fromCompiledContent(reader, options);
|
||||
µb.htmlFilteringEngine.fromCompiledContent(reader, options);
|
||||
};
|
||||
|
||||
api.toSelfie = function() {
|
||||
return {
|
||||
cosmetic: µb.cosmeticFilteringEngine.toSelfie(),
|
||||
scriptlets: µb.scriptletFilteringEngine.toSelfie(),
|
||||
html: µb.htmlFilteringEngine.toSelfie()
|
||||
|
||||
};
|
||||
};
|
||||
|
||||
api.fromSelfie = function(selfie) {
|
||||
µb.cosmeticFilteringEngine.fromSelfie(selfie.cosmetic);
|
||||
µb.scriptletFilteringEngine.fromSelfie(selfie.scriptlets);
|
||||
µb.htmlFilteringEngine.fromSelfie(selfie.html);
|
||||
};
|
||||
|
||||
return api;
|
||||
})();
|
||||
|
||||
/******************************************************************************/
|
||||
@ -2116,6 +2116,9 @@ FilterContainer.prototype.compile = function(raw, writer) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// 0 = network filters
|
||||
writer.select(0);
|
||||
|
||||
// Pure hostnames, use more efficient dictionary lookup
|
||||
// https://github.com/chrisaljoudi/uBlock/issues/665
|
||||
// Create a dict keyed on request type etc.
|
||||
@ -2268,6 +2271,9 @@ FilterContainer.prototype.fromCompiledContent = function(reader) {
|
||||
args, bits, bucket, entry,
|
||||
tokenHash, fdata, fingerprint;
|
||||
|
||||
// 0 = network filters
|
||||
reader.select(0);
|
||||
|
||||
while ( reader.next() === true ) {
|
||||
args = reader.args();
|
||||
bits = args[0];
|
||||
|
||||
@ -347,7 +347,7 @@
|
||||
vAPI.storage.set({ 'availableFilterLists': µb.availableFilterLists });
|
||||
µb.staticNetFilteringEngine.freeze();
|
||||
µb.redirectEngine.freeze();
|
||||
µb.cosmeticFilteringEngine.freeze();
|
||||
µb.staticExtFilteringEngine.freeze();
|
||||
µb.selfieManager.destroy();
|
||||
};
|
||||
|
||||
@ -543,7 +543,7 @@
|
||||
|
||||
var onDone = function() {
|
||||
µb.staticNetFilteringEngine.freeze();
|
||||
µb.cosmeticFilteringEngine.freeze();
|
||||
µb.staticExtFilteringEngine.freeze();
|
||||
µb.redirectEngine.freeze();
|
||||
vAPI.storage.set({ 'availableFilterLists': µb.availableFilterLists });
|
||||
|
||||
@ -586,7 +586,7 @@
|
||||
µb.availableFilterLists = lists;
|
||||
|
||||
µb.redirectEngine.reset();
|
||||
µb.cosmeticFilteringEngine.reset();
|
||||
µb.staticExtFilteringEngine.reset();
|
||||
µb.staticNetFilteringEngine.reset();
|
||||
µb.selfieManager.destroy();
|
||||
µb.staticFilteringReverseLookup.resetLists();
|
||||
@ -703,23 +703,22 @@
|
||||
/******************************************************************************/
|
||||
|
||||
µBlock.compileFilters = function(rawText) {
|
||||
var networkFilters = new this.CompiledLineWriter(),
|
||||
cosmeticFilters = new this.CompiledLineWriter();
|
||||
var writer = new this.CompiledLineWriter();
|
||||
|
||||
// Useful references:
|
||||
// https://adblockplus.org/en/filter-cheatsheet
|
||||
// https://adblockplus.org/en/filters
|
||||
var staticNetFilteringEngine = this.staticNetFilteringEngine,
|
||||
cosmeticFilteringEngine = this.cosmeticFilteringEngine,
|
||||
staticExtFilteringEngine = this.staticExtFilteringEngine,
|
||||
reIsWhitespaceChar = /\s/,
|
||||
reMaybeLocalIp = /^[\d:f]/,
|
||||
reIsLocalhostRedirect = /\s+(?:broadcasthost|local|localhost|localhost\.localdomain)(?=\s|$)/,
|
||||
reIsLocalhostRedirect = /\s+(?:broadcasthost|local|localhost|localhost\.localdomain)\b/,
|
||||
reLocalIp = /^(?:0\.0\.0\.0|127\.0\.0\.1|::1|fe80::1%lo0)/,
|
||||
line, lineRaw, c, pos,
|
||||
line, c, pos,
|
||||
lineIter = new this.LineIterator(rawText);
|
||||
|
||||
while ( lineIter.eot() === false ) {
|
||||
line = lineRaw = lineIter.next().trim();
|
||||
line = lineIter.next().trim();
|
||||
|
||||
// rhill 2014-04-18: The trim is important here, as without it there
|
||||
// could be a lingering `\r` which would cause problems in the
|
||||
@ -733,9 +732,7 @@
|
||||
|
||||
// Parse or skip cosmetic filters
|
||||
// All cosmetic filters are caught here
|
||||
if ( cosmeticFilteringEngine.compile(line, cosmeticFilters) ) {
|
||||
continue;
|
||||
}
|
||||
if ( staticExtFilteringEngine.compile(line, writer) ) { continue; }
|
||||
|
||||
// Whatever else is next can be assumed to not be a cosmetic filter
|
||||
|
||||
@ -767,12 +764,10 @@
|
||||
|
||||
if ( line.length === 0 ) { continue; }
|
||||
|
||||
staticNetFilteringEngine.compile(line, networkFilters);
|
||||
staticNetFilteringEngine.compile(line, writer);
|
||||
}
|
||||
|
||||
return networkFilters.toString() +
|
||||
'\n/* end of network - start of cosmetic */\n' +
|
||||
cosmeticFilters.toString();
|
||||
return writer.toString();
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
@ -783,15 +778,12 @@
|
||||
|
||||
µBlock.applyCompiledFilters = function(rawText, firstparty) {
|
||||
if ( rawText === '' ) { return; }
|
||||
var separator = '\n/* end of network - start of cosmetic */\n',
|
||||
pos = rawText.indexOf(separator),
|
||||
reader = new this.CompiledLineReader(rawText.slice(0, pos));
|
||||
var reader = new this.CompiledLineReader(rawText);
|
||||
this.staticNetFilteringEngine.fromCompiledContent(reader);
|
||||
this.cosmeticFilteringEngine.fromCompiledContent(
|
||||
reader.reset(rawText.slice(pos + separator.length)),
|
||||
this.userSettings.ignoreGenericCosmeticFilters,
|
||||
!firstparty && !this.userSettings.parseAllABPHideFilters
|
||||
);
|
||||
this.staticExtFilteringEngine.fromCompiledContent(reader, {
|
||||
skipGenericCosmetic: this.userSettings.ignoreGenericCosmeticFilters,
|
||||
skipCosmetic: !firstparty && !this.userSettings.parseAllABPHideFilters
|
||||
});
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
@ -885,7 +877,7 @@
|
||||
availableFilterLists: this.availableFilterLists,
|
||||
staticNetFilteringEngine: this.staticNetFilteringEngine.toSelfie(),
|
||||
redirectEngine: this.redirectEngine.toSelfie(),
|
||||
cosmeticFilteringEngine: this.cosmeticFilteringEngine.toSelfie()
|
||||
staticExtFilteringEngine: this.staticExtFilteringEngine.toSelfie()
|
||||
};
|
||||
vAPI.cacheStorage.set({ selfie: selfie });
|
||||
}.bind(µBlock);
|
||||
@ -1068,7 +1060,7 @@
|
||||
this.availableFilterLists.hasOwnProperty(details.assetKey) === false ||
|
||||
this.selectedFilterLists.indexOf(details.assetKey) === -1
|
||||
) {
|
||||
return false;
|
||||
return;
|
||||
}
|
||||
}
|
||||
// https://github.com/gorhill/uBlock/issues/2594
|
||||
@ -1077,10 +1069,10 @@
|
||||
this.hiddenSettings.ignoreRedirectFilters === true &&
|
||||
this.hiddenSettings.ignoreScriptInjectFilters === true
|
||||
) {
|
||||
return false;
|
||||
return;
|
||||
}
|
||||
}
|
||||
return;
|
||||
return true;
|
||||
}
|
||||
|
||||
// Compile the list while we have the raw version in memory
|
||||
|
||||
@ -480,9 +480,10 @@ onBeforeMaybeSpuriousCSPReport.textDecoder = undefined;
|
||||
/******************************************************************************/
|
||||
|
||||
// To handle:
|
||||
// - inline script tags
|
||||
// - websockets
|
||||
// - media elements larger than n kB
|
||||
// - Media elements larger than n kB
|
||||
// - Scriptlet injection (requires ability to modify response body)
|
||||
// - HTML filtering (requires ability to modify response body)
|
||||
// - CSP injection
|
||||
|
||||
var onHeadersReceived = function(details) {
|
||||
// Do not interfere with behind-the-scene requests.
|
||||
@ -490,15 +491,17 @@ var onHeadersReceived = function(details) {
|
||||
if ( vAPI.isBehindTheSceneTabId(tabId) ) { return; }
|
||||
|
||||
var µb = µBlock,
|
||||
requestType = details.type;
|
||||
requestType = details.type,
|
||||
isRootDoc = requestType === 'main_frame',
|
||||
isDoc = isRootDoc || requestType === 'sub_frame';
|
||||
|
||||
if ( requestType === 'main_frame' ) {
|
||||
if ( isRootDoc ) {
|
||||
µb.tabContextManager.push(tabId, details.url);
|
||||
}
|
||||
|
||||
var pageStore = µb.pageStoreFromTabId(tabId);
|
||||
if ( pageStore === null ) {
|
||||
if ( requestType !== 'main_frame' ) { return; }
|
||||
if ( isRootDoc === false ) { return; }
|
||||
pageStore = µb.bindTabToPageStats(tabId, 'beforeRequest');
|
||||
}
|
||||
if ( pageStore.getNetFilteringSwitch() === false ) { return; }
|
||||
@ -507,24 +510,283 @@ var onHeadersReceived = function(details) {
|
||||
return foilLargeMediaElement(pageStore, details);
|
||||
}
|
||||
|
||||
if ( isDoc && µb.canFilterResponseBody ) {
|
||||
filterDocument(details);
|
||||
}
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/2813
|
||||
// Disable the blocking of large media elements if the document is itself
|
||||
// a media element: the resource was not prevented from loading so no
|
||||
// point to further block large media elements for the current document.
|
||||
if ( requestType === 'main_frame' ) {
|
||||
if ( isRootDoc ) {
|
||||
if ( reMediaContentTypes.test(headerValueFromName('content-type', details.responseHeaders)) ) {
|
||||
pageStore.allowLargeMediaElementsUntil = Date.now() + 86400000;
|
||||
}
|
||||
return injectCSP(pageStore, details);
|
||||
}
|
||||
|
||||
if ( requestType === 'sub_frame' ) {
|
||||
if ( isDoc ) {
|
||||
return injectCSP(pageStore, details);
|
||||
}
|
||||
};
|
||||
|
||||
var reMediaContentTypes = /^(?:audio|image|video)\//;
|
||||
|
||||
/*******************************************************************************
|
||||
|
||||
The response body filterer is responsible for:
|
||||
|
||||
- Scriptlet filtering
|
||||
- HTML filtering
|
||||
|
||||
In the spirit of efficiency, the response body filterer works this way:
|
||||
|
||||
If:
|
||||
- HTML filtering: no.
|
||||
- Scriptlet filtering: no.
|
||||
Then:
|
||||
No response body filtering is initiated.
|
||||
|
||||
If:
|
||||
- HTML filtering: no.
|
||||
- Scriptlet filtering: yes.
|
||||
Then:
|
||||
Inject scriptlets before first chunk of response body data reported
|
||||
then immediately disconnect response body data listener.
|
||||
|
||||
If:
|
||||
- HTML filtering: yes.
|
||||
- Scriptlet filtering: no/yes.
|
||||
Then:
|
||||
Assemble all response body data into a single buffer. Once all the
|
||||
response data has been received, create a document from it. Then:
|
||||
- Inject scriptlets in the resulting DOM.
|
||||
- Remove all DOM elements matching HTML filters.
|
||||
Then serialize the resulting modified document as the new response
|
||||
body.
|
||||
|
||||
This way, the overhead is minimal for when only scriptlets need to be
|
||||
injected.
|
||||
|
||||
If the platform does not support response body filtering, the scriptlets
|
||||
will be injected the old way, through the content script.
|
||||
|
||||
**/
|
||||
|
||||
var filterDocument = (function() {
|
||||
var µb = µBlock,
|
||||
filterers = new Map(),
|
||||
reDoctype = /^\s*<!DOCTYPE\b[^>]+?>/,
|
||||
reJustASCII = /^[\x00-\x7E]*$/,
|
||||
domParser, xmlSerializer,
|
||||
textDecoderCharset, textDecoder, textEncoder;
|
||||
|
||||
var streamJobDone = function(filterer, responseBytes) {
|
||||
if (
|
||||
filterer.scriptlets === undefined ||
|
||||
filterer.selectors !== undefined ||
|
||||
filterer.charset !== undefined
|
||||
) {
|
||||
return false;
|
||||
}
|
||||
if ( textDecoder === undefined ) {
|
||||
textDecoder = new TextDecoder();
|
||||
}
|
||||
// We need to insert after DOCTYPE, or else the browser may falls into
|
||||
// quirks mode.
|
||||
var responseStr = textDecoder.decode(responseBytes);
|
||||
var match = reDoctype.exec(responseStr);
|
||||
if ( match === null ) { return false; }
|
||||
filterers.delete(filterer.stream);
|
||||
if ( textEncoder === undefined ) {
|
||||
textEncoder = new TextEncoder();
|
||||
}
|
||||
var beforeByteLength = match.index + match[0].length;
|
||||
var beforeBytes = reJustASCII.test(match[0]) ?
|
||||
new Uint8Array(responseBytes, 0, beforeByteLength) :
|
||||
textEncoder.encode(responseStr.slice(0, beforeByteLength));
|
||||
filterer.stream.write(beforeBytes);
|
||||
filterer.stream.write(
|
||||
textEncoder.encode('<script>' + filterer.scriptlets + '</script>')
|
||||
);
|
||||
filterer.stream.write(
|
||||
new Uint8Array(responseBytes, beforeBytes.byteLength)
|
||||
);
|
||||
filterer.stream.disconnect();
|
||||
return true;
|
||||
};
|
||||
|
||||
var streamClose = function(filterer, buffer) {
|
||||
if ( buffer !== undefined ) {
|
||||
filterer.stream.write(buffer);
|
||||
} else if ( filterer.buffer !== undefined ) {
|
||||
filterer.stream.write(filterer.buffer);
|
||||
}
|
||||
filterer.stream.close();
|
||||
};
|
||||
|
||||
var onStreamData = function(ev) {
|
||||
var filterer = filterers.get(this);
|
||||
if ( filterer === undefined ) {
|
||||
this.write(ev.data);
|
||||
this.disconnect();
|
||||
return;
|
||||
}
|
||||
if (
|
||||
this.status !== 'transferringdata' &&
|
||||
this.status !== 'finishedtransferringdata'
|
||||
) {
|
||||
filterers.delete(this);
|
||||
this.disconnect();
|
||||
return;
|
||||
}
|
||||
// TODO: possibly improve buffer growth, if benchmarking shows it's
|
||||
// worth it.
|
||||
if ( filterer.buffer === null ) {
|
||||
if ( streamJobDone(filterer, ev.data) ) { return; }
|
||||
filterer.buffer = new Uint8Array(ev.data);
|
||||
return;
|
||||
}
|
||||
var buffer = new Uint8Array(
|
||||
filterer.buffer.byteLength +
|
||||
ev.data.byteLength
|
||||
);
|
||||
buffer.set(filterer.buffer);
|
||||
buffer.set(new Uint8Array(ev.data), filterer.buffer.byteLength);
|
||||
filterer.buffer = buffer;
|
||||
};
|
||||
|
||||
var onStreamStop = function() {
|
||||
var filterer = filterers.get(this);
|
||||
filterers.delete(this);
|
||||
if ( filterer === undefined || filterer.buffer === null ) {
|
||||
this.close();
|
||||
return;
|
||||
}
|
||||
if ( this.status !== 'finishedtransferringdata' ) { return; }
|
||||
|
||||
if ( domParser === undefined ) {
|
||||
domParser = new DOMParser();
|
||||
xmlSerializer = new XMLSerializer();
|
||||
}
|
||||
if ( textEncoder === undefined ) {
|
||||
textEncoder = new TextEncoder();
|
||||
}
|
||||
|
||||
// In case of unknown charset, assume utf-8.
|
||||
if ( filterer.charset !== textDecoderCharset ) {
|
||||
textDecoder = undefined;
|
||||
}
|
||||
if ( textDecoder === undefined ) {
|
||||
try {
|
||||
textDecoder = new TextDecoder(filterer.charset);
|
||||
textDecoderCharset = filterer.charset;
|
||||
} catch(ex) {
|
||||
textDecoder = new TextDecoder();
|
||||
textDecoderCharset = undefined;
|
||||
}
|
||||
}
|
||||
|
||||
var doc = domParser.parseFromString(
|
||||
textDecoder.decode(filterer.buffer),
|
||||
'text/html'
|
||||
);
|
||||
|
||||
var modified = false;
|
||||
if ( filterer.selectors !== undefined ) {
|
||||
if ( µb.htmlFilteringEngine.apply(doc, filterer) ) {
|
||||
modified = true;
|
||||
}
|
||||
}
|
||||
if ( filterer.scriptlets !== undefined ) {
|
||||
if ( µb.scriptletFilteringEngine.apply(doc, filterer) ) {
|
||||
modified = true;
|
||||
}
|
||||
}
|
||||
|
||||
if ( modified === false ) {
|
||||
streamClose(filterer);
|
||||
return;
|
||||
}
|
||||
|
||||
// If the charset of the document was not utf-8, we need to change it
|
||||
// to utf-8.
|
||||
if ( textDecoderCharset !== undefined ) {
|
||||
var meta = doc.createElement('meta');
|
||||
meta.setAttribute('charset', 'utf-8');
|
||||
doc.head.insertBefore(meta, doc.head.firstChild);
|
||||
}
|
||||
|
||||
// https://stackoverflow.com/questions/6088972/get-doctype-of-an-html-as-string-with-javascript/10162353#10162353
|
||||
var doctypeStr = doc.doctype instanceof Object ?
|
||||
xmlSerializer.serializeToString(doc.doctype) + '\n' :
|
||||
'';
|
||||
|
||||
streamClose(
|
||||
filterer,
|
||||
textEncoder.encode(doctypeStr + doc.documentElement.outerHTML)
|
||||
);
|
||||
};
|
||||
|
||||
var onStreamError = function() {
|
||||
filterers.delete(this);
|
||||
};
|
||||
|
||||
return function(details) {
|
||||
var hostname = µb.URI.hostnameFromURI(details.url);
|
||||
if ( hostname === '' ) { return; }
|
||||
|
||||
var domain = µb.URI.domainFromHostname(hostname);
|
||||
|
||||
var request = {
|
||||
stream: undefined,
|
||||
tabId: details.tabId,
|
||||
url: details.url,
|
||||
hostname: hostname,
|
||||
domain: domain,
|
||||
entity: µb.URI.entityFromDomain(domain),
|
||||
selectors: undefined,
|
||||
scriptlets: undefined,
|
||||
buffer: null,
|
||||
charset: undefined
|
||||
};
|
||||
request.selectors = µb.htmlFilteringEngine.retrieve(request);
|
||||
request.scriptlets = µb.scriptletFilteringEngine.retrieve(request);
|
||||
|
||||
if (
|
||||
request.selectors === undefined &&
|
||||
request.scriptlets === undefined
|
||||
) {
|
||||
return;
|
||||
}
|
||||
|
||||
var headers = details.responseHeaders,
|
||||
contentType = headerValueFromName('content-type', headers);
|
||||
if ( contentType !== '' ) {
|
||||
if ( reContentTypeDocument.test(contentType) === false ) { return; }
|
||||
var match = reContentTypeCharset.exec(contentType);
|
||||
if ( match !== null ) {
|
||||
var charset = match[1].toLowerCase();
|
||||
if ( charset !== 'utf-8' ) {
|
||||
request.charset = charset;
|
||||
}
|
||||
}
|
||||
}
|
||||
// https://bugzilla.mozilla.org/show_bug.cgi?id=1426789
|
||||
if ( headerValueFromName('content-disposition', headers) ) { return; }
|
||||
|
||||
var stream = request.stream =
|
||||
vAPI.net.webRequest.filterResponseData(details.requestId);
|
||||
stream.ondata = onStreamData;
|
||||
stream.onstop = onStreamStop;
|
||||
stream.onerror = onStreamError;
|
||||
filterers.set(stream, request);
|
||||
};
|
||||
})();
|
||||
|
||||
var reContentTypeDocument = /^(?:text\/html|application\/xhtml+xml)/i;
|
||||
var reContentTypeCharset = /charset=['"]?([^'" ]+)/i;
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
var injectCSP = function(pageStore, details) {
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
/*******************************************************************************
|
||||
|
||||
uBlock Origin - a browser extension to block requests.
|
||||
Copyright (C) 2014-2016 Raymond Hill
|
||||
Copyright (C) 2014-2017 Raymond Hill
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
@ -309,6 +309,13 @@ var psl = publicSuffixList;
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
URI.entityFromDomain = function(domain) {
|
||||
var pos = domain.indexOf('.');
|
||||
return pos !== -1 ? domain.slice(0, pos) + '.*' : '';
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
URI.pathFromURI = function(uri) {
|
||||
var matches = rePathFromURI.exec(uri);
|
||||
return matches !== null ? matches[1] : '';
|
||||
|
||||
@ -225,7 +225,9 @@
|
||||
/******************************************************************************/
|
||||
|
||||
µBlock.CompiledLineWriter = function() {
|
||||
this.output = [];
|
||||
this.blockId = undefined;
|
||||
this.block = undefined;
|
||||
this.blocks = new Map();
|
||||
this.stringifier = JSON.stringify;
|
||||
};
|
||||
|
||||
@ -235,46 +237,81 @@
|
||||
|
||||
µBlock.CompiledLineWriter.prototype = {
|
||||
push: function(args) {
|
||||
this.output[this.output.length] = this.stringifier(args);
|
||||
this.block[this.block.length] = this.stringifier(args);
|
||||
},
|
||||
select: function(blockId) {
|
||||
if ( blockId === this.blockId ) { return; }
|
||||
this.blockId = blockId;
|
||||
this.block = this.blocks.get(blockId);
|
||||
if ( this.block === undefined ) {
|
||||
this.blocks.set(blockId, (this.block = []));
|
||||
}
|
||||
},
|
||||
toString: function() {
|
||||
return this.output.join('\n');
|
||||
var result = [];
|
||||
for ( var entry of this.blocks ) {
|
||||
if ( entry[1].length === 0 ) { continue; }
|
||||
result.push(
|
||||
'#block-start-' + entry[0],
|
||||
entry[1].join('\n'),
|
||||
'#block-end-' + entry[0]
|
||||
);
|
||||
}
|
||||
return result.join('\n');
|
||||
}
|
||||
};
|
||||
|
||||
µBlock.CompiledLineReader = function(raw) {
|
||||
this.reset(raw);
|
||||
/******************************************************************************/
|
||||
|
||||
µBlock.CompiledLineReader = function(raw, blockId) {
|
||||
this.block = '';
|
||||
this.len = 0;
|
||||
this.offset = 0;
|
||||
this.line = '';
|
||||
this.parser = JSON.parse;
|
||||
this.blocks = new Map();
|
||||
var reBlockStart = /^#block-start-(\d+)\n/gm,
|
||||
match = reBlockStart.exec(raw),
|
||||
beg, end;
|
||||
while ( match !== null ) {
|
||||
beg = match.index + match[0].length;
|
||||
end = raw.indexOf('#block-end-' + match[1], beg);
|
||||
this.blocks.set(parseInt(match[1], 10), raw.slice(beg, end));
|
||||
reBlockStart.lastIndex = end;
|
||||
match = reBlockStart.exec(raw);
|
||||
}
|
||||
if ( blockId !== undefined ) {
|
||||
this.select(blockId);
|
||||
}
|
||||
};
|
||||
|
||||
µBlock.CompiledLineReader.prototype = {
|
||||
reset: function(raw) {
|
||||
this.input = raw;
|
||||
this.len = raw.length;
|
||||
this.offset = 0;
|
||||
this.s = '';
|
||||
return this;
|
||||
},
|
||||
next: function() {
|
||||
if ( this.offset === this.len ) {
|
||||
this.s = '';
|
||||
this.line = '';
|
||||
return false;
|
||||
}
|
||||
var pos = this.input.indexOf('\n', this.offset);
|
||||
var pos = this.block.indexOf('\n', this.offset);
|
||||
if ( pos !== -1 ) {
|
||||
this.s = this.input.slice(this.offset, pos);
|
||||
this.line = this.block.slice(this.offset, pos);
|
||||
this.offset = pos + 1;
|
||||
} else {
|
||||
this.s = this.input.slice(this.offset);
|
||||
this.line = this.block.slice(this.offset);
|
||||
this.offset = this.len;
|
||||
}
|
||||
return true;
|
||||
},
|
||||
select: function(blockId) {
|
||||
this.block = this.blocks.get(blockId) || '';
|
||||
this.len = this.block.length;
|
||||
this.offset = 0;
|
||||
return this;
|
||||
},
|
||||
fingerprint: function() {
|
||||
return this.s;
|
||||
return this.line;
|
||||
},
|
||||
args: function() {
|
||||
return this.parser(this.s);
|
||||
return this.parser(this.line);
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user