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454 lines
14 KiB
454 lines
14 KiB
/*******************************************************************************
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µBlock - a Chromium 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 self, µBlock */
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// For background page
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/******************************************************************************/
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(function() {
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'use strict';
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/******************************************************************************/
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self.vAPI = self.vAPI || {};
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var vAPI = self.vAPI;
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var chrome = self.chrome;
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var manifest = chrome.runtime.getManifest();
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vAPI.chrome = true;
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/******************************************************************************/
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vAPI.app = {
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name: manifest.name,
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version: manifest.version
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};
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/******************************************************************************/
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vAPI.app.restart = function() {
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chrome.runtime.reload();
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};
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/******************************************************************************/
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vAPI.storage = chrome.storage.local;
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/******************************************************************************/
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vAPI.tabs = {};
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/******************************************************************************/
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vAPI.tabs.registerListeners = function() {
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if ( typeof this.onNavigation === 'function' ) {
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chrome.webNavigation.onCommitted.addListener(this.onNavigation);
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}
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if ( typeof this.onUpdated === 'function' ) {
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chrome.tabs.onUpdated.addListener(this.onUpdated);
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}
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if ( typeof this.onClosed === 'function' ) {
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chrome.tabs.onRemoved.addListener(this.onClosed);
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}
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if ( typeof this.onPopup === 'function' ) {
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chrome.webNavigation.onCreatedNavigationTarget.addListener(this.onPopup);
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}
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};
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/******************************************************************************/
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vAPI.tabs.get = function(tabId, callback) {
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var onTabReady = function(tab) {
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// https://code.google.com/p/chromium/issues/detail?id=410868#c8
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if ( chrome.runtime.lastError ) {
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;
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}
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// Caller must be prepared to deal with nil tab value
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callback(tab);
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};
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if ( tabId !== null ) {
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if ( typeof tabId === 'string' ) {
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tabId = parseInt(tabId, 10);
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}
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chrome.tabs.get(tabId, onTabReady);
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return;
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}
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var onTabReceived = function(tabs) {
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// https://code.google.com/p/chromium/issues/detail?id=410868#c8
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if ( chrome.runtime.lastError ) {
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;
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}
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callback(tabs[0]);
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};
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chrome.tabs.query({ active: true, currentWindow: true }, onTabReceived);
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};
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/******************************************************************************/
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// properties of the details object:
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// url: 'URL', // the address that will be opened
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// tabId: 1, // the tab is used if set, instead of creating a new one
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// index: -1, // undefined: end of the list, -1: following tab, or after index
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// active: false, // opens the tab in background - true and undefined: foreground
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// select: true // if a tab is already opened with that url, then select it instead of opening a new one
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vAPI.tabs.open = function(details) {
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var targetURL = details.url;
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if ( typeof targetURL !== 'string' || targetURL === '' ) {
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return null;
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}
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// extension pages
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if ( /^[\w-]{2,}:/.test(targetURL) !== true ) {
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targetURL = vAPI.getURL(targetURL);
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}
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// dealing with Chrome's asynchronous API
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var wrapper = function() {
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if ( details.active === undefined ) {
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details.active = true;
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}
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var subWrapper = function() {
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var _details = {
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url: targetURL,
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active: !!details.active
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};
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if ( details.tabId ) {
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// update doesn't accept index, must use move
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chrome.tabs.update(details.tabId, _details, function(tab) {
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// if the tab doesn't exist
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if ( vAPI.lastError() ) {
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chrome.tabs.create(_details);
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} else if ( details.index !== undefined ) {
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chrome.tabs.move(tab.id, {index: details.index});
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}
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});
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} else {
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if ( details.index !== undefined ) {
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_details.index = details.index;
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}
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chrome.tabs.create(_details);
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}
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};
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if ( details.index === -1 ) {
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vAPI.tabs.get(null, function(tab) {
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if ( tab ) {
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details.index = tab.index + 1;
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} else {
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delete details.index;
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}
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subWrapper();
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});
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}
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else {
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subWrapper();
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}
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};
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if ( details.select ) {
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chrome.tabs.query({ currentWindow: true }, function(tabs) {
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var rgxHash = /#.*/;
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// this is questionable
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var url = targetURL.replace(rgxHash, '');
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var selected = tabs.some(function(tab) {
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if ( tab.url.replace(rgxHash, '') === url ) {
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chrome.tabs.update(tab.id, { active: true });
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return true;
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}
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});
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if ( !selected ) {
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wrapper();
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}
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});
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}
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else {
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wrapper();
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}
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};
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/******************************************************************************/
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vAPI.tabs.remove = function(tabId) {
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var onTabRemoved = function() {
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if ( vAPI.lastError() ) {
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}
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};
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chrome.tabs.remove(tabId, onTabRemoved);
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};
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/******************************************************************************/
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vAPI.tabs.injectScript = function(tabId, details, callback) {
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var onScriptExecuted = function() {
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// https://code.google.com/p/chromium/issues/detail?id=410868#c8
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if ( chrome.runtime.lastError ) {
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}
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if ( typeof callback === 'function' ) {
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callback();
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}
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};
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if ( tabId ) {
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chrome.tabs.executeScript(tabId, details, onScriptExecuted);
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} else {
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chrome.tabs.executeScript(details, onScriptExecuted);
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}
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};
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/******************************************************************************/
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// Must read: https://code.google.com/p/chromium/issues/detail?id=410868#c8
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// https://github.com/gorhill/uBlock/issues/19
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// https://github.com/gorhill/uBlock/issues/207
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// Since we may be called asynchronously, the tab id may not exist
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// anymore, so this ensures it does still exist.
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vAPI.setIcon = function(tabId, img, badge) {
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var onIconReady = function() {
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if ( vAPI.lastError() ) {
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return;
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}
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chrome.browserAction.setBadgeText({ tabId: tabId, text: badge });
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if ( badge !== '' ) {
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chrome.browserAction.setBadgeBackgroundColor({ tabId: tabId, color: '#666' });
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}
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};
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chrome.browserAction.setIcon({ tabId: tabId, path: img }, onIconReady);
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};
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/******************************************************************************/
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vAPI.messaging = {
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ports: {},
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listeners: {},
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defaultHandler: null,
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NOOPFUNC: function(){},
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UNHANDLED: 'vAPI.messaging.notHandled'
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};
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/******************************************************************************/
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vAPI.messaging.listen = function(listenerName, callback) {
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this.listeners[listenerName] = callback;
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};
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/******************************************************************************/
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vAPI.messaging.onPortMessage = function(request, port) {
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var callback = vAPI.messaging.NOOPFUNC;
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if ( request.requestId !== undefined ) {
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callback = function(response) {
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// https://github.com/gorhill/uBlock/issues/383
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if ( vAPI.messaging.ports.hasOwnProperty(port.name) === false ) {
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return;
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}
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port.postMessage({
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requestId: request.requestId,
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portName: request.portName,
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msg: response !== undefined ? response : null
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});
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};
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}
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// Specific handler
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var r = vAPI.messaging.UNHANDLED;
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var listener = vAPI.messaging.listeners[request.portName];
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if ( typeof listener === 'function' ) {
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r = listener(request.msg, port.sender, callback);
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}
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if ( r !== vAPI.messaging.UNHANDLED ) {
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return;
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}
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// Default handler
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r = vAPI.messaging.defaultHandler(request.msg, port.sender, callback);
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if ( r !== vAPI.messaging.UNHANDLED ) {
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return;
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}
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console.error('µBlock> messaging > unknown request: %o', request);
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// Unhandled:
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// Need to callback anyways in case caller expected an answer, or
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// else there is a memory leak on caller's side
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callback();
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};
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/******************************************************************************/
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vAPI.messaging.onPortDisconnect = function(port) {
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port.onDisconnect.removeListener(vAPI.messaging.onPortDisconnect);
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port.onMessage.removeListener(vAPI.messaging.onPortMessage);
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delete vAPI.messaging.ports[port.name];
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};
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/******************************************************************************/
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vAPI.messaging.onPortConnect = function(port) {
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port.onDisconnect.addListener(vAPI.messaging.onPortDisconnect);
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port.onMessage.addListener(vAPI.messaging.onPortMessage);
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vAPI.messaging.ports[port.name] = port;
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};
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/******************************************************************************/
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vAPI.messaging.setup = function(defaultHandler) {
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// Already setup?
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if ( this.defaultHandler !== null ) {
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return;
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}
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if ( typeof defaultHandler !== 'function' ) {
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defaultHandler = function(){ return vAPI.messaging.UNHANDLED; };
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}
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this.defaultHandler = defaultHandler;
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chrome.runtime.onConnect.addListener(this.onPortConnect);
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};
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/******************************************************************************/
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vAPI.messaging.broadcast = function(message) {
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var messageWrapper = {
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broadcast: true,
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msg: message
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};
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for ( var portName in this.ports ) {
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if ( this.ports.hasOwnProperty(portName) === false ) {
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continue;
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}
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this.ports[portName].postMessage(messageWrapper);
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}
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};
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/******************************************************************************/
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vAPI.net = {
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registerListeners: function() {
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var listeners = [
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'onBeforeRequest',
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'onBeforeSendHeaders',
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'onHeadersReceived'
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];
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for (var i = 0; i < listeners.length; ++i) {
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chrome.webRequest[listeners[i]].addListener(
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this[listeners[i]].callback,
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{
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'urls': this[listeners[i]].urls || ['<all_urls>'],
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'types': this[listeners[i]].types || []
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},
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this[listeners[i]].extra
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);
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}
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}
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};
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/******************************************************************************/
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vAPI.contextMenu = {
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create: function(details, callback) {
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this.menuId = details.id;
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this.callback = callback;
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chrome.contextMenus.create(details);
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chrome.contextMenus.onClicked.addListener(this.callback);
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},
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remove: function() {
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chrome.contextMenus.onClicked.removeListener(this.callback);
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chrome.contextMenus.remove(this.menuId);
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}
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};
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/******************************************************************************/
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vAPI.lastError = function() {
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return chrome.runtime.lastError;
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};
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/******************************************************************************/
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// This is called only once, when everything has been loaded in memory after
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// the extension was launched. It can be used to inject content scripts
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// in already opened web pages, to remove whatever nuisance could make it to
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// the web pages before uBlock was ready.
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vAPI.onLoadAllCompleted = function() {
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// http://code.google.com/p/chromium/issues/detail?id=410868#c11
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// Need to be sure to access `vAPI.lastError()` to prevent
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// spurious warnings in the console.
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var scriptDone = function() {
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vAPI.lastError();
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};
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var scriptEnd = function(tabId) {
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if ( vAPI.lastError() ) {
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return;
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}
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vAPI.tabs.injectScript(tabId, {
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file: 'js/contentscript-end.js',
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allFrames: true,
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runAt: 'document_idle'
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}, scriptDone);
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};
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var scriptStart = function(tabId) {
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vAPI.tabs.injectScript(tabId, {
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file: 'js/vapi-client.js',
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allFrames: true,
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runAt: 'document_start'
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}, function(){ });
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vAPI.tabs.injectScript(tabId, {
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file: 'js/contentscript-start.js',
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allFrames: true,
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runAt: 'document_start'
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}, function(){ scriptEnd(tabId); });
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};
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var bindToTabs = function(tabs) {
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var µb = µBlock;
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var i = tabs.length, tab;
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while ( i-- ) {
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tab = tabs[i];
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µb.bindTabToPageStats(tab.id, tab.url);
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// https://github.com/gorhill/uBlock/issues/129
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scriptStart(tab.id);
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}
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};
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chrome.tabs.query({ url: 'http://*/*' }, bindToTabs);
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chrome.tabs.query({ url: 'https://*/*' }, bindToTabs);
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};
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/******************************************************************************/
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})();
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/******************************************************************************/
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