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@ -1,7 +1,7 @@
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/*******************************************************************************
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µMatrix - a Chromium browser extension to black/white list requests.
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Copyright (C) 2014 Raymond Hill
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Copyright (C) 2014-2105 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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@ -63,18 +63,18 @@ vAPI.contentscriptEndInjected = true;
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var localMessager = vAPI.messaging.channel('contentscript-end.js');
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vAPI.shutdown.add(function() {
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localMessager.close();
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});
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/******************************************************************************/
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/******************************************************************************/
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// This is to be executed only once: putting this code in its own closure
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// means the code will be flushed from memory once executed.
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(function() {
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/******************************************************************************/
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// Unrendered noscript (because CSP) workaround
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/*------------[ Unrendered Noscript (because CSP) Workaround ]----------------*/
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// Executed once.
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(function() {
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var checkScriptBlacklistedHandler = function(response) {
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if ( !response.scriptBlacklisted ) {
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return;
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@ -94,9 +94,14 @@ localMessager.send({
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what: 'checkScriptBlacklisted',
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url: window.location.href
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}, checkScriptBlacklistedHandler);
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})();
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/******************************************************************************/
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/******************************************************************************/
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// Executed only once.
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(function() {
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var localStorageHandler = function(mustRemove) {
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if ( mustRemove ) {
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window.localStorage.clear();
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@ -135,16 +140,166 @@ try {
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}
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catch (e) {
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}
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/******************************************************************************/
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})();
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/******************************************************************************/
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/******************************************************************************/
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(function() {
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// https://github.com/gorhill/uMatrix/issues/45
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var collapser = (function() {
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var timer = null;
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var requestId = 1;
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var newRequests = [];
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var pendingRequests = {};
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var pendingRequestCount = 0;
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var srcProps = {
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'iframe': 'src',
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'img': 'src'
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};
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var PendingRequest = function(target, tagName, attr) {
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this.id = requestId++;
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this.target = target;
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pendingRequests[this.id] = this;
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pendingRequestCount += 1;
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};
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// Because a while ago I have observed constructors are faster than
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// literal object instanciations.
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var BouncingRequest = function(id, tagName, url) {
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this.id = id;
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this.tagName = tagName;
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this.url = url;
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this.collapse = false;
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};
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var onProcessed = function(requests) {
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if ( requests === null || Array.isArray(requests) === false ) {
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return;
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}
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var i = requests.length;
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var request, entry;
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while ( i-- ) {
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request = requests[i];
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if ( pendingRequests.hasOwnProperty(request.id) === false ) {
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continue;
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}
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entry = pendingRequests[request.id];
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delete pendingRequests[request.id];
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pendingRequestCount -= 1;
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// https://github.com/chrisaljoudi/uBlock/issues/869
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if ( !request.collapse ) {
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continue;
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}
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// https://github.com/chrisaljoudi/uBlock/issues/399
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// Never remove elements from the DOM, just hide them
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entry.target.style.setProperty('display', 'none', 'important');
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}
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// Renew map: I believe that even if all properties are deleted, an
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// object will still use more memory than a brand new one.
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if ( pendingRequestCount === 0 ) {
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pendingRequests = {};
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}
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};
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var send = function() {
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timer = null;
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localMessager.send({
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what: 'evaluateURLs',
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requests: newRequests
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}, onProcessed);
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newRequests = [];
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};
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var process = function(delay) {
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if ( newRequests.length === 0 ) {
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return;
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}
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if ( delay === 0 ) {
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clearTimeout(timer);
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send();
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} else if ( timer === null ) {
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timer = setTimeout(send, delay || 50);
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}
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};
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var addNode = function(target) {
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var tagName = target.localName;
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var prop = srcProps[tagName];
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if ( prop === undefined ) {
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return;
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}
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// https://github.com/chrisaljoudi/uBlock/issues/174
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// Do not remove fragment from src URL
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var src = target[prop];
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if ( typeof src !== 'string' || src === '' ) {
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return;
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}
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if ( src.lastIndexOf('http', 0) !== 0 ) {
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return;
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}
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var req = new PendingRequest(target, tagName, prop);
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newRequests.push(new BouncingRequest(req.id, tagName, src));
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};
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var addNodes = function(nodes) {
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var node;
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var i = nodes.length;
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while ( i-- ) {
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node = nodes[i];
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if ( node.nodeType === 1 ) {
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addNode(node);
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}
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}
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};
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var addBranches = function(branches) {
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var root;
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var i = branches.length;
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while ( i-- ) {
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root = branches[i];
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if ( root.nodeType === 1 ) {
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addNode(root);
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// blocked images will be reported by onResourceFailed
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addNodes(root.querySelectorAll('iframe'));
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}
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}
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};
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// Listener to collapse blocked resources.
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// - Future requests not blocked yet
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// - Elements dynamically added to the page
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// - Elements which resource URL changes
|
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|
var onResourceFailed = function(ev) {
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addNode(ev.target);
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process();
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};
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document.addEventListener('error', onResourceFailed, true);
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vAPI.shutdown.add(function() {
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if ( timer !== null ) {
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clearTimeout(timer);
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timer = null;
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}
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document.removeEventListener('error', onResourceFailed, true);
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newRequests = [];
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pendingRequests = {};
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pendingRequestCount = 0;
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});
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return {
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addNodes: addNodes,
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addBranches: addBranches,
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process: process
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};
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})();
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/******************************************************************************/
|
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/******************************************************************************/
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|
|
var nodesAddedHandler = function(nodeList, summary) {
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@ -154,17 +309,17 @@ var nodesAddedHandler = function(nodeList, summary) {
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if ( node.nodeType !== 1 ) {
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continue;
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}
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if ( typeof node.tagName !== 'string' ) {
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if ( typeof node.localName !== 'string' ) {
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continue;
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}
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|
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switch ( node.tagName.toUpperCase() ) {
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switch ( node.localName ) {
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case 'SCRIPT':
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case 'script':
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|
|
// https://github.com/gorhill/httpswitchboard/issues/252
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|
|
// Do not count µMatrix's own script tags, they are not required
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|
// to "unbreak" a web page
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|
|
if ( node.id && node.id.indexOf('uMatrix-') === 0 ) {
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if ( typeof node.id === 'string' && node.id.lastIndexOf('uMatrix-', 0) === 0 ) {
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break;
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|
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}
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text = node.textContent.trim();
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@ -179,14 +334,14 @@ var nodesAddedHandler = function(nodeList, summary) {
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}
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break;
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case 'A':
|
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|
|
if ( node.href.indexOf('javascript:') === 0 ) {
|
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|
|
case 'a':
|
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|
|
if ( node.href.lastIndexOf('javascript', 0) === 0 ) {
|
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|
|
summary.scriptSources['{inline_script}'] = true;
|
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|
|
summary.mustReport = true;
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|
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}
|
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|
break;
|
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|
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case 'OBJECT':
|
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|
|
case 'object':
|
|
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|
|
src = (node.data || '').trim();
|
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|
|
|
if ( src !== '' ) {
|
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|
|
|
summary.pluginSources[src] = true;
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|
|
@ -194,7 +349,7 @@ var nodesAddedHandler = function(nodeList, summary) {
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}
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break;
|
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|
|
case 'EMBED':
|
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|
|
case 'embed':
|
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|
|
src = (node.src || '').trim();
|
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|
|
|
if ( src !== '' ) {
|
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|
|
|
summary.pluginSources[src] = true;
|
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|
|
@ -221,13 +376,18 @@ var nodeListsAddedHandler = function(nodeLists) {
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};
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|
|
while ( i-- ) {
|
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|
|
nodesAddedHandler(nodeLists[i], summary);
|
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|
|
|
collapser.addBranches(nodeLists[i]);
|
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|
|
}
|
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|
|
|
if ( summary.mustReport ) {
|
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|
|
|
localMessager.send(summary);
|
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|
|
|
}
|
|
|
|
|
collapser.process();
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
|
|
|
|
|
// Executed only once.
|
|
|
|
|
|
|
|
|
|
(function() {
|
|
|
|
|
var summary = {
|
|
|
|
|
@ -241,18 +401,24 @@ var nodeListsAddedHandler = function(nodeLists) {
|
|
|
|
|
// &
|
|
|
|
|
// Looks for inline javascript also in at least one a[href] element.
|
|
|
|
|
// https://github.com/gorhill/httpswitchboard/issues/131
|
|
|
|
|
nodesAddedHandler(document.querySelectorAll('script, a[href^="javascript:"], object, embed'), summary);
|
|
|
|
|
nodesAddedHandler(document.querySelectorAll('a[href^="javascript:"],embed,object,script'), summary);
|
|
|
|
|
|
|
|
|
|
//console.debug('contentscript-end.js > firstObservationHandler(): found %d script tags in "%s"', Object.keys(summary.scriptSources).length, window.location.href);
|
|
|
|
|
|
|
|
|
|
localMessager.send(summary);
|
|
|
|
|
|
|
|
|
|
collapser.addNodes(document.querySelectorAll('iframe,img'));
|
|
|
|
|
collapser.process();
|
|
|
|
|
})();
|
|
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
|
|
|
|
|
// Observe changes in the DOM
|
|
|
|
|
|
|
|
|
|
// Added node lists will be cumulated here before being processed
|
|
|
|
|
|
|
|
|
|
(function() {
|
|
|
|
|
var addedNodeLists = [];
|
|
|
|
|
var addedNodeListsTimer = null;
|
|
|
|
|
|
|
|
|
|
@ -284,17 +450,37 @@ var treeMutationObservedHandlerAsync = function(mutations) {
|
|
|
|
|
|
|
|
|
|
// This fixes http://acid3.acidtests.org/
|
|
|
|
|
if ( document.body ) {
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// https://github.com/gorhill/httpswitchboard/issues/176
|
|
|
|
|
var treeObserver = new MutationObserver(treeMutationObservedHandlerAsync);
|
|
|
|
|
treeObserver.observe(document.body, {
|
|
|
|
|
childList: true,
|
|
|
|
|
subtree: true
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
vAPI.shutdown.add(function() {
|
|
|
|
|
if ( addedNodeListsTimer !== null ) {
|
|
|
|
|
clearTimeout(addedNodeListsTimer);
|
|
|
|
|
addedNodeListsTimer = null;
|
|
|
|
|
}
|
|
|
|
|
if ( treeObserver !== null ) {
|
|
|
|
|
treeObserver.disconnect();
|
|
|
|
|
treeObserver = null;
|
|
|
|
|
}
|
|
|
|
|
addedNodeLists = [];
|
|
|
|
|
});
|
|
|
|
|
})();
|
|
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
|
|
|
|
|
})();
|
|
|
|
|
localMessager.send({ what: 'shutdown?' }, function(response) {
|
|
|
|
|
if ( response === true ) {
|
|
|
|
|
vAPI.shutdown.exec();
|
|
|
|
|
}
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
|
gorhill
10 years ago
