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126 lines
3.7 KiB
126 lines
3.7 KiB
/*******************************************************************************
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µBlock - a browser extension to block requests.
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Copyright (C) 2014 The µBlock authors
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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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/* global APP_SHUTDOWN, APP_STARTUP */
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/* exported startup, shutdown, install, uninstall */
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'use strict';
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/******************************************************************************/
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let bgProcess;
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const hostName = 'ublock';
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const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
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const restartObserver = {
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get observer() {
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return Cc["@mozilla.org/observer-service;1"]
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.getService(Ci.nsIObserverService);
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},
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QueryInterface: (function() {
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let {XPCOMUtils} = Cu['import']('resource://gre/modules/XPCOMUtils.jsm', {});
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return XPCOMUtils.generateQI([
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Ci.nsIObserver,
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Ci.nsISupportsWeakReference
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]);
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})(),
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register: function() {
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this.observer.addObserver(this, hostName + '-restart', true);
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},
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unregister: function() {
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this.observer.removeObserver(this, hostName + '-restart');
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},
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observe: function() {
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shutdown();
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startup();
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}
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};
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/******************************************************************************/
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function startup(data, reason) {
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let onReady = function(e) {
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if ( e ) {
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this.removeEventListener(e.type, onReady);
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}
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let hDoc = Cc['@mozilla.org/appshell/appShellService;1']
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.getService(Ci.nsIAppShellService)
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.hiddenDOMWindow.document;
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bgProcess = hDoc.documentElement.appendChild(
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hDoc.createElementNS('http://www.w3.org/1999/xhtml', 'iframe')
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);
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bgProcess.setAttribute(
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'src',
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'chrome://' + hostName + '/content/background.html'
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);
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restartObserver.register();
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};
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if ( reason !== APP_STARTUP ) {
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onReady();
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return;
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}
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let ww = Cc['@mozilla.org/embedcomp/window-watcher;1']
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.getService(Ci.nsIWindowWatcher);
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ww.registerNotification({
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observe: function(win) {
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ww.unregisterNotification(this);
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win.addEventListener('DOMContentLoaded', onReady);
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}
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});
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}
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/******************************************************************************/
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function shutdown(data, reason) {
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if ( reason === APP_SHUTDOWN ) {
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return;
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}
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bgProcess.parentNode.removeChild(bgProcess);
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// remove the restartObserver only when the extension is being disabled
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if ( data !== undefined ) {
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restartObserver.unregister();
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}
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}
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/******************************************************************************/
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function install() {
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// https://bugzil.la/719376
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Cc['@mozilla.org/intl/stringbundle;1']
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.getService(Ci.nsIStringBundleService).flushBundles();
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}
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/******************************************************************************/
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function uninstall() {}
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/******************************************************************************/
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