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597 lines
18 KiB
597 lines
18 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 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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var vAPI = self.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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var noopFunc = function(){};
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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.isNoTabId = function(tabId) {
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return tabId.toString() === '-1';
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};
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vAPI.noTabId = '-1';
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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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/* noop */
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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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/* noop */
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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(parseInt(details.tabId, 10), _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(parseInt(tabId, 10), onTabRemoved);
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};
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/******************************************************************************/
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vAPI.tabs.reload = function(tabId /*, flags*/) {
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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.reload(tabId);
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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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tabId = parseInt(tabId, 10);
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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, iconStatus, badge) {
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tabId = parseInt(tabId, 10);
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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({
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tabId: tabId,
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color: '#666'
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});
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}
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};
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var iconPaths = iconStatus === 'on' ?
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{ '19': 'img/browsericons/icon19.png', '38': 'img/browsericons/icon38.png' } :
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{ '19': 'img/browsericons/icon19-off.png', '38': 'img/browsericons/icon38-off.png' };
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chrome.browserAction.setIcon({ tabId: tabId, path: iconPaths }, 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: noopFunc,
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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 = CallbackWrapper.factory(port, request).callback;
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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.channelName];
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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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// This allows to avoid creating a closure for every single message which
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// expects an answer. Having a closure created each time a message is processed
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// has been always bothering me. Another benefit of the implementation here
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// is to reuse the callback proxy object, so less memory churning.
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//
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// https://developers.google.com/speed/articles/optimizing-javascript
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// "Creating a closure is significantly slower then creating an inner
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// function without a closure, and much slower than reusing a static
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// function"
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//
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// http://hacksoflife.blogspot.ca/2015/01/the-four-horsemen-of-performance.html
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// "the dreaded 'uniformly slow code' case where every function takes 1%
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// of CPU and you have to make one hundred separate performance optimizations
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// to improve performance at all"
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//
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// http://jsperf.com/closure-no-closure/2
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var CallbackWrapper = function(port, request) {
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// No need to bind every single time
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this.callback = this.proxy.bind(this);
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this.messaging = vAPI.messaging;
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this.init(port, request);
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};
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CallbackWrapper.junkyard = [];
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CallbackWrapper.factory = function(port, request) {
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var wrapper = CallbackWrapper.junkyard.pop();
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if ( wrapper ) {
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wrapper.init(port, request);
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return wrapper;
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}
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return new CallbackWrapper(port, request);
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};
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CallbackWrapper.prototype.init = function(port, request) {
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this.port = port;
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this.request = request;
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};
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CallbackWrapper.prototype.proxy = function(response) {
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// https://github.com/gorhill/uBlock/issues/383
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if ( this.messaging.ports.hasOwnProperty(this.port.name) ) {
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this.port.postMessage({
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requestId: this.request.requestId,
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channelName: this.request.channelName,
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msg: response !== undefined ? response : null
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});
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}
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// Mark for reuse
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this.port = this.request = null;
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CallbackWrapper.junkyard.push(this);
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};
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/******************************************************************************/
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vAPI.net = {};
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/******************************************************************************/
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vAPI.net.registerListeners = function() {
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var µb = µBlock;
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var µburi = µb.URI;
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var normalizeRequestDetails = function(details) {
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µburi.set(details.url);
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details.tabId = details.tabId.toString();
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details.hostname = µburi.hostnameFromURI(details.url);
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// The rest of the function code is to normalize type
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var type = details.type;
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if ( type !== 'other' ) {
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return;
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}
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var path = µburi.path;
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var pos = path.lastIndexOf('.');
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if ( pos === -1 ) {
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return;
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}
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var ext = path.slice(pos) + '.';
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if ( '.eot.ttf.otf.svg.woff.woff2.'.indexOf(ext) !== -1 ) {
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details.type = 'font';
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return;
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}
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// Still need this because often behind-the-scene requests are wrongly
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// categorized as 'other'
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if ( '.ico.png.gif.jpg.jpeg.webp.'.indexOf(ext) !== -1 ) {
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details.type = 'image';
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return;
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}
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// https://code.google.com/p/chromium/issues/detail?id=410382
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if ( type === 'other' ) {
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details.type = 'object';
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return;
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}
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};
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var onBeforeRequestClient = this.onBeforeRequest.callback;
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var onBeforeRequest = function(details) {
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normalizeRequestDetails(details);
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return onBeforeRequestClient(details);
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};
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chrome.webRequest.onBeforeRequest.addListener(
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onBeforeRequest,
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{
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'urls': this.onBeforeRequest.urls || ['<all_urls>'],
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'types': this.onBeforeRequest.types || []
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},
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this.onBeforeRequest.extra
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);
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chrome.webRequest.onBeforeSendHeaders.addListener(
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this.onBeforeSendHeaders.callback,
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{
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'urls': this.onBeforeSendHeaders.urls || ['<all_urls>'],
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'types': this.onBeforeSendHeaders.types || []
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},
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this.onBeforeSendHeaders.extra
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);
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var onHeadersReceivedClient = this.onHeadersReceived.callback;
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var onHeadersReceived = function(details) {
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normalizeRequestDetails(details);
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return onHeadersReceivedClient(details);
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};
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chrome.webRequest.onHeadersReceived.addListener(
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onHeadersReceived,
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{
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'urls': this.onHeadersReceived.urls || ['<all_urls>'],
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'types': this.onHeadersReceived.types || []
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},
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this.onHeadersReceived.extra
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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,
|
|
runAt: 'document_start'
|
|
}, function(){ scriptEnd(tabId); });
|
|
};
|
|
var bindToTabs = function(tabs) {
|
|
var µb = µBlock;
|
|
var i = tabs.length, tab;
|
|
while ( i-- ) {
|
|
tab = tabs[i];
|
|
µb.bindTabToPageStats(tab.id, tab.url);
|
|
// https://github.com/gorhill/uBlock/issues/129
|
|
scriptStart(tab.id);
|
|
}
|
|
};
|
|
|
|
chrome.tabs.query({ url: 'http://*/*' }, bindToTabs);
|
|
chrome.tabs.query({ url: 'https://*/*' }, bindToTabs);
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.punycodeHostname = function(hostname) {
|
|
return hostname;
|
|
};
|
|
|
|
vAPI.punycodeURL = function(url) {
|
|
return url;
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
})();
|
|
|
|
/******************************************************************************/
|