2014-06-23 16:42:43 -06:00
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/*******************************************************************************
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µBlock - a Chromium browser extension to block requests.
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Copyright (C) 2014 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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2014-10-02 14:45:26 -06:00
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/* jshint bitwise: false */
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2014-09-11 08:53:36 -06:00
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/* global µBlock */
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2014-06-23 16:42:43 -06:00
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/*******************************************************************************
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A PageRequestStore object is used to store net requests in two ways:
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To record distinct net requests
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To create a log of net requests
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**/
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/******************************************************************************/
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/******************************************************************************/
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µBlock.PageStore = (function() {
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/******************************************************************************/
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var µb = µBlock;
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2014-09-14 14:20:40 -06:00
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/******************************************************************************/
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2014-06-23 16:42:43 -06:00
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/******************************************************************************/
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2014-09-14 14:20:40 -06:00
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// To mitigate memory churning
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var netFilteringResultCacheEntryJunkyard = [];
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var netFilteringResultCacheEntryJunkyardMax = 200;
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/******************************************************************************/
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2014-10-02 14:45:26 -06:00
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var NetFilteringResultCacheEntry = function(result, type, flags) {
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this.init(result, type, flags);
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2014-09-14 14:20:40 -06:00
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};
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/******************************************************************************/
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2014-10-02 14:45:26 -06:00
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NetFilteringResultCacheEntry.prototype.init = function(result, type, flags) {
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this.result = result;
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this.type = type;
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this.flags = flags;
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2014-09-14 14:20:40 -06:00
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this.time = Date.now();
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};
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/******************************************************************************/
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NetFilteringResultCacheEntry.prototype.dispose = function() {
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2014-10-02 14:45:26 -06:00
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this.result = '';
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this.type = '';
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2014-09-14 14:20:40 -06:00
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if ( netFilteringResultCacheEntryJunkyard.length < netFilteringResultCacheEntryJunkyardMax ) {
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netFilteringResultCacheEntryJunkyard.push(this);
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2014-07-29 23:05:35 -06:00
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}
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};
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2014-09-14 14:20:40 -06:00
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/******************************************************************************/
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2014-10-02 14:45:26 -06:00
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NetFilteringResultCacheEntry.factory = function(result, type, flags) {
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2014-09-14 14:20:40 -06:00
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var entry = netFilteringResultCacheEntryJunkyard.pop();
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if ( entry === undefined ) {
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2014-10-02 14:45:26 -06:00
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entry = new NetFilteringResultCacheEntry(result, type, flags);
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2014-09-14 14:20:40 -06:00
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} else {
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2014-10-02 14:45:26 -06:00
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entry.init(result, type, flags);
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2014-09-14 14:20:40 -06:00
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}
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return entry;
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};
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/******************************************************************************/
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/******************************************************************************/
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// To mitigate memory churning
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var uidGenerator = 1;
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var netFilteringCacheJunkyard = [];
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var netFilteringCacheJunkyardMax = 10;
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/******************************************************************************/
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var NetFilteringResultCache = function() {
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this.init();
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};
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/******************************************************************************/
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NetFilteringResultCache.factory = function() {
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var entry = netFilteringCacheJunkyard.pop();
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if ( entry === undefined ) {
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entry = new NetFilteringResultCache();
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} else {
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entry.init();
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}
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return entry;
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};
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/******************************************************************************/
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NetFilteringResultCache.prototype.init = function() {
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this.uname = 'NetFilteringResultCache:' + uidGenerator++;
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this.urls = {};
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this.count = 0;
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this.shelfLife = 60 * 1000;
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};
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/******************************************************************************/
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NetFilteringResultCache.prototype.dispose = function() {
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for ( var key in this.urls ) {
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if ( this.urls.hasOwnProperty(key) === false ) {
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2014-07-29 23:05:35 -06:00
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continue;
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}
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2014-09-14 14:20:40 -06:00
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this.urls[key].dispose();
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}
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µBlock.asyncJobs.remove(this.uname);
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this.uname = '';
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this.urls = {};
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this.count = 0;
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if ( netFilteringCacheJunkyard.length < netFilteringCacheJunkyardMax ) {
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netFilteringCacheJunkyard.push(this);
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}
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return null;
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};
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/******************************************************************************/
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2014-10-02 14:45:26 -06:00
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NetFilteringResultCache.prototype.add = function(url, result, type, flags) {
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2014-09-14 14:20:40 -06:00
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var entry = this.urls[url];
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if ( entry !== undefined ) {
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2014-10-02 14:45:26 -06:00
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entry.result = result;
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entry.type = type;
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entry.flags = flags;
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2014-09-14 14:20:40 -06:00
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entry.time = Date.now();
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return;
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}
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2014-10-02 14:45:26 -06:00
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this.urls[url] = NetFilteringResultCacheEntry.factory(result, type, flags);
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2014-09-14 14:20:40 -06:00
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if ( this.count === 0 ) {
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this.pruneAsync();
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}
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this.count += 1;
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};
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/******************************************************************************/
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NetFilteringResultCache.prototype.fetchAll = function() {
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return this.urls;
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};
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/******************************************************************************/
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NetFilteringResultCache.prototype.compareEntries = function(a, b) {
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return this.urls[b].time - this.urls[a].time;
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};
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/******************************************************************************/
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NetFilteringResultCache.prototype.prune = function() {
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var keys = Object.keys(this.urls).sort(this.compareEntries.bind(this));
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var obsolete = Date.now() - this.shelfLife;
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var key, entry;
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var i = keys.length;
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while ( i-- ) {
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key = keys[i];
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entry = this.urls[key];
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if ( entry.time > obsolete ) {
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2014-07-29 23:05:35 -06:00
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break;
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}
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2014-09-14 14:20:40 -06:00
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entry.dispose();
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delete this.urls[key];
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}
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this.count -= keys.length - i - 1;
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if ( this.count > 0 ) {
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this.pruneAsync();
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2014-07-29 23:05:35 -06:00
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}
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};
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2014-10-02 14:45:26 -06:00
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// https://www.youtube.com/watch?v=hcVpbsDyOhM
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2014-09-14 14:20:40 -06:00
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/******************************************************************************/
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NetFilteringResultCache.prototype.pruneAsync = function() {
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µBlock.asyncJobs.add(
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this.uname,
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null,
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this.prune.bind(this),
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this.shelfLife + 120000,
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false
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);
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};
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/******************************************************************************/
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NetFilteringResultCache.prototype.lookup = function(url) {
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2014-10-02 14:45:26 -06:00
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return this.urls[url];
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2014-09-14 14:20:40 -06:00
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};
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/******************************************************************************/
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/******************************************************************************/
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// To mitigate memory churning
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var frameStoreJunkyard = [];
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var frameStoreJunkyardMax = 50;
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2014-07-29 23:05:35 -06:00
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/******************************************************************************/
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2014-10-06 20:40:25 -06:00
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var FrameStore = function(rootHostname, frameURL) {
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this.init(rootHostname, frameURL);
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2014-07-29 23:05:35 -06:00
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};
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/******************************************************************************/
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2014-10-06 20:40:25 -06:00
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FrameStore.factory = function(rootHostname, frameURL) {
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2014-09-14 14:20:40 -06:00
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var entry = frameStoreJunkyard.pop();
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if ( entry === undefined ) {
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2014-10-06 20:40:25 -06:00
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entry = new FrameStore(rootHostname, frameURL);
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2014-09-14 14:20:40 -06:00
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} else {
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2014-10-06 20:40:25 -06:00
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entry.init(rootHostname, frameURL);
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2014-09-14 14:20:40 -06:00
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}
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return entry;
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};
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/******************************************************************************/
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2014-10-06 20:40:25 -06:00
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FrameStore.prototype.init = function(rootHostname, frameURL) {
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2014-07-29 23:05:35 -06:00
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var µburi = µb.URI;
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this.pageHostname = µburi.hostnameFromURI(frameURL);
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2014-10-07 14:30:40 -06:00
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this.pageDomain = µburi.domainFromHostname(this.pageHostname) || this.pageHostname;
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2014-10-06 20:40:25 -06:00
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this.rootHostname = rootHostname;
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2014-10-07 14:30:40 -06:00
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this.rootDomain = µburi.domainFromHostname(rootHostname) || rootHostname;
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2014-07-29 23:05:35 -06:00
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return this;
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};
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/******************************************************************************/
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FrameStore.prototype.dispose = function() {
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2014-10-07 14:30:40 -06:00
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this.pageHostname = this.pageDomain =
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this.rootHostname = this.rootDomain = '';
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2014-09-14 14:20:40 -06:00
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if ( frameStoreJunkyard.length < frameStoreJunkyardMax ) {
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frameStoreJunkyard.push(this);
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}
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return null;
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2014-07-29 23:05:35 -06:00
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};
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2014-09-14 14:20:40 -06:00
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/******************************************************************************/
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2014-07-29 23:05:35 -06:00
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/******************************************************************************/
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2014-09-14 14:20:40 -06:00
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// To mitigate memory churning
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var pageStoreJunkyard = [];
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var pageStoreJunkyardMax = 10;
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/******************************************************************************/
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// Cache only what is worth it if logging is disabled
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// http://jsperf.com/string-indexof-vs-object
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var collapsibleRequestTypes = 'image sub_frame object';
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2014-06-23 16:42:43 -06:00
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/******************************************************************************/
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2014-07-29 23:05:35 -06:00
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var PageStore = function(tabId, pageURL) {
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2014-06-23 16:42:43 -06:00
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this.init(tabId, pageURL);
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2014-07-29 23:05:35 -06:00
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};
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2014-06-23 16:42:43 -06:00
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/******************************************************************************/
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2014-09-14 14:20:40 -06:00
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PageStore.factory = function(tabId, pageURL) {
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var entry = pageStoreJunkyard.pop();
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if ( entry === undefined ) {
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entry = new PageStore(tabId, pageURL);
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} else {
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entry.init(tabId, pageURL);
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}
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return entry;
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};
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/******************************************************************************/
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2014-06-23 16:42:43 -06:00
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PageStore.prototype.init = function(tabId, pageURL) {
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this.tabId = tabId;
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2014-07-14 09:24:59 -06:00
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this.previousPageURL = '';
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this.pageURL = pageURL;
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this.pageHostname = µb.URI.hostnameFromURI(pageURL);
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2014-08-27 00:01:10 -06:00
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// https://github.com/gorhill/uBlock/issues/185
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// Use hostname if no domain can be extracted
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this.pageDomain = µb.URI.domainFromHostname(this.pageHostname) || this.pageHostname;
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2014-10-06 20:40:25 -06:00
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this.rootHostname = this.pageHostname;
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2014-10-07 14:30:40 -06:00
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this.rootDomain = this.pageDomain;
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2014-08-27 00:01:10 -06:00
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2014-09-14 14:20:40 -06:00
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this.frames = {};
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2014-08-02 09:40:27 -06:00
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this.netFiltering = true;
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this.netFilteringReadTime = 0;
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2014-07-14 09:24:59 -06:00
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this.perLoadBlockedRequestCount = 0;
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this.perLoadAllowedRequestCount = 0;
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2014-09-14 14:20:40 -06:00
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this.netFilteringCache = NetFilteringResultCache.factory();
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if ( µb.userSettings.logRequests ) {
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this.netFilteringCache.shelfLife = 30 * 60 * 1000;
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}
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2014-07-14 09:24:59 -06:00
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return this;
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};
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/******************************************************************************/
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2014-10-02 14:45:26 -06:00
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PageStore.prototype.reuse = function(pageURL, context) {
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// If URL changes without a page reload (more and more common), then we
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// need to keep all that we collected for reuse. In particular, not
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// doing so was causing a problem in `videos.foxnews.com`: clicking a
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// video thumbnail would not work, because the frame hierarchy structure
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// was flushed from memory, while not really being flushed on the page.
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if ( context === 'tabUpdated' ) {
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this.previousPageURL = this.pageURL;
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this.pageURL = pageURL;
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this.pageHostname = µb.URI.hostnameFromURI(pageURL);
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this.pageDomain = µb.URI.domainFromHostname(this.pageHostname) || this.pageHostname;
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2014-10-06 20:40:25 -06:00
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this.rootHostname = this.pageHostname;
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2014-10-07 14:30:40 -06:00
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this.rootDomain = this.pageDomain;
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2014-10-02 14:45:26 -06:00
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return this;
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}
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// A new page is completely reloaded from scratch, reset all.
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2014-09-14 14:20:40 -06:00
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this.disposeFrameStores();
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this.netFilteringCache = this.netFilteringCache.dispose();
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2014-08-02 09:40:27 -06:00
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var previousPageURL = this.pageURL;
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this.init(this.tabId, pageURL);
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this.previousPageURL = previousPageURL;
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2014-06-23 16:42:43 -06:00
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return this;
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};
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|
|
|
|
2014-09-14 14:20:40 -06:00
|
|
|
// https://www.youtube.com/watch?v=dltNSbOupgE
|
|
|
|
|
2014-06-23 16:42:43 -06:00
|
|
|
/******************************************************************************/
|
|
|
|
|
|
|
|
PageStore.prototype.dispose = function() {
|
|
|
|
// rhill 2013-11-07: Even though at init time these are reset, I still
|
|
|
|
// need to release the memory taken by these, which can amount to
|
|
|
|
// sizeable enough chunks (especially requests, through the request URL
|
|
|
|
// used as a key).
|
2014-10-07 14:30:40 -06:00
|
|
|
this.pageURL = this.previousPageURL =
|
|
|
|
this.pageHostname = this.pageDomain =
|
|
|
|
this.rootHostname = this.rootDomain = '';
|
2014-09-14 14:20:40 -06:00
|
|
|
this.disposeFrameStores();
|
|
|
|
this.netFilteringCache = this.netFilteringCache.dispose();
|
|
|
|
if ( pageStoreJunkyard.length < pageStoreJunkyardMax ) {
|
2014-06-23 16:42:43 -06:00
|
|
|
pageStoreJunkyard.push(this);
|
|
|
|
}
|
2014-09-14 14:20:40 -06:00
|
|
|
return null;
|
|
|
|
};
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
|
|
|
PageStore.prototype.disposeFrameStores = function() {
|
|
|
|
var frames = this.frames;
|
|
|
|
if ( typeof frames === 'object' ) {
|
|
|
|
for ( var k in frames ) {
|
|
|
|
if ( frames.hasOwnProperty(k) === false ) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
frames[k].dispose();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
this.frames = {};
|
2014-06-23 16:42:43 -06:00
|
|
|
};
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
2014-07-29 23:05:35 -06:00
|
|
|
PageStore.prototype.addFrame = function(frameId, frameURL) {
|
|
|
|
var frameStore = this.frames[frameId];
|
|
|
|
if ( frameStore === undefined ) {
|
2014-10-06 20:40:25 -06:00
|
|
|
this.frames[frameId] = frameStore = FrameStore.factory(this.rootHostname, frameURL);
|
2014-07-29 23:05:35 -06:00
|
|
|
//console.debug('µBlock> PageStore.addFrame(%d, "%s")', frameId, frameURL);
|
|
|
|
}
|
|
|
|
return frameStore;
|
|
|
|
};
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
|
|
|
PageStore.prototype.getFrame = function(frameId) {
|
|
|
|
return this.frames[frameId];
|
|
|
|
};
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
2014-08-02 09:40:27 -06:00
|
|
|
PageStore.prototype.getNetFilteringSwitch = function() {
|
|
|
|
if ( this.netFilteringReadTime < µb.netWhitelistModifyTime ) {
|
|
|
|
this.netFiltering = µb.getNetFilteringSwitch(this.pageURL, this.pageDomain);
|
|
|
|
this.netFilteringReadTime = Date.now();
|
|
|
|
}
|
|
|
|
return this.netFiltering;
|
|
|
|
};
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
2014-09-14 14:20:40 -06:00
|
|
|
PageStore.prototype.filterRequest = function(context, requestType, requestURL) {
|
2014-10-02 14:45:26 -06:00
|
|
|
var entry = this.netFilteringCache.lookup(requestURL);
|
|
|
|
if ( entry !== undefined ) {
|
2014-09-16 17:16:18 -06:00
|
|
|
//console.debug(' cache HIT: PageStore.filterRequest("%s")', requestURL);
|
2014-10-02 14:45:26 -06:00
|
|
|
return entry.result;
|
2014-06-23 16:42:43 -06:00
|
|
|
}
|
2014-09-16 17:16:18 -06:00
|
|
|
//console.debug('cache MISS: PageStore.filterRequest("%s")', requestURL);
|
2014-10-02 14:45:26 -06:00
|
|
|
var result = µb.netFilteringEngine.matchString(context, requestURL, requestType);
|
2014-09-14 14:20:40 -06:00
|
|
|
if ( collapsibleRequestTypes.indexOf(requestType) !== -1 || µb.userSettings.logRequests ) {
|
2014-10-02 14:45:26 -06:00
|
|
|
this.netFilteringCache.add(requestURL, result, requestType, 0);
|
2014-09-14 14:20:40 -06:00
|
|
|
}
|
|
|
|
return result;
|
|
|
|
};
|
2014-06-27 15:06:42 -06:00
|
|
|
|
2014-09-14 14:20:40 -06:00
|
|
|
/******************************************************************************/
|
2014-06-27 15:06:42 -06:00
|
|
|
|
2014-10-02 14:45:26 -06:00
|
|
|
PageStore.prototype.setRequestFlags = function(requestURL, targetBits, valueBits) {
|
|
|
|
var entry = this.netFilteringCache.lookup(requestURL);
|
|
|
|
if ( entry !== undefined ) {
|
|
|
|
entry.flags = (entry.flags & ~targetBits) | (valueBits & targetBits);
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
2014-10-06 12:02:44 -06:00
|
|
|
PageStore.prototype.recordResult = function(requestType, requestURL, result) {
|
|
|
|
if ( collapsibleRequestTypes.indexOf(requestType) !== -1 || µb.userSettings.logRequests ) {
|
|
|
|
this.netFilteringCache.add(requestURL, result, requestType, 0);
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
2014-09-14 14:20:40 -06:00
|
|
|
// false: not blocked
|
|
|
|
// true: blocked
|
2014-07-03 06:28:15 -06:00
|
|
|
|
2014-09-14 14:20:40 -06:00
|
|
|
PageStore.prototype.boolFromResult = function(result) {
|
|
|
|
return typeof result === 'string' && result !== '' && result.slice(0, 2) !== '@@';
|
2014-06-23 16:42:43 -06:00
|
|
|
};
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
|
2014-09-11 07:53:49 -06:00
|
|
|
PageStore.prototype.updateBadge = function() {
|
2014-08-02 09:40:27 -06:00
|
|
|
var netFiltering = this.getNetFilteringSwitch();
|
2014-09-11 08:53:36 -06:00
|
|
|
var iconPaths = netFiltering ?
|
2014-09-03 19:18:36 -06:00
|
|
|
{ '19': 'img/browsericons/icon19.png', '38': 'img/browsericons/icon38.png' } :
|
|
|
|
{ '19': 'img/browsericons/icon19-off.png', '38': 'img/browsericons/icon38-off.png' };
|
2014-06-23 16:42:43 -06:00
|
|
|
|
|
|
|
var iconStr = '';
|
2014-08-02 09:40:27 -06:00
|
|
|
if ( µb.userSettings.showIconBadge && netFiltering && this.perLoadBlockedRequestCount ) {
|
2014-08-19 18:41:52 -06:00
|
|
|
iconStr = µb.utils.formatCount(this.perLoadBlockedRequestCount);
|
2014-06-23 16:42:43 -06:00
|
|
|
}
|
2014-09-11 08:53:36 -06:00
|
|
|
µb.XAL.setIcon(this.tabId, iconPaths, iconStr);
|
2014-06-23 16:42:43 -06:00
|
|
|
};
|
|
|
|
|
2014-08-19 18:41:52 -06:00
|
|
|
// https://www.youtube.com/watch?v=drW8p_dTLD4
|
|
|
|
|
2014-06-23 16:42:43 -06:00
|
|
|
/******************************************************************************/
|
|
|
|
|
|
|
|
return {
|
2014-09-14 14:20:40 -06:00
|
|
|
factory: PageStore.factory
|
2014-06-23 16:42:43 -06:00
|
|
|
};
|
|
|
|
|
|
|
|
})();
|
|
|
|
|
|
|
|
/******************************************************************************/
|