mirror of
https://github.com/gorhill/uBlock.git
synced 2024-07-19 03:05:22 +02:00
eed13194fb
I had exceptions thrown by that code once in a while, about the `port` object not being connected; possibly occurs only when using dev tools with breakpoints in uBO's code. Even if this can be reproduced randomly only when debugging uBO, it costs nothing to add code in there to handle exceptions.
1457 lines
51 KiB
JavaScript
1457 lines
51 KiB
JavaScript
/*******************************************************************************
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uBlock Origin - a browser extension to block requests.
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Copyright (C) 2014-2018 The uBlock Origin authors
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Copyright (C) 2014-present 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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// For background page
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'use strict';
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/******************************************************************************/
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(function() {
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/******************************************************************************/
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/******************************************************************************/
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var chrome = self.chrome;
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var manifest = chrome.runtime.getManifest();
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vAPI.cantWebsocket =
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chrome.webRequest.ResourceType instanceof Object === false ||
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chrome.webRequest.ResourceType.WEBSOCKET !== 'websocket';
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vAPI.lastError = function() {
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return chrome.runtime.lastError;
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};
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// https://github.com/gorhill/uBlock/issues/875
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// https://code.google.com/p/chromium/issues/detail?id=410868#c8
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// Must not leave `lastError` unchecked.
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vAPI.resetLastError = function() {
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void chrome.runtime.lastError;
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};
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vAPI.supportsUserStylesheets = vAPI.webextFlavor.soup.has('user_stylesheet');
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// The real actual webextFlavor value may not be set in stone, so listen
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// for possible future changes.
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window.addEventListener('webextFlavor', function() {
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vAPI.supportsUserStylesheets =
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vAPI.webextFlavor.soup.has('user_stylesheet');
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}, { once: true });
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vAPI.insertCSS = function(tabId, details) {
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return chrome.tabs.insertCSS(tabId, details, vAPI.resetLastError);
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};
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var noopFunc = function(){};
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/******************************************************************************/
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vAPI.app = (function() {
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let version = manifest.version;
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let match = /(\d+\.\d+\.\d+)(?:\.(\d+))?/.exec(version);
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if ( match && match[2] ) {
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let v = parseInt(match[2], 10);
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version = match[1] + (v < 100 ? 'b' + v : 'rc' + (v - 100));
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}
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return {
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name: manifest.name.replace(/ dev\w+ build/, ''),
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version: version
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};
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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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/******************************************************************************/
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// chrome.storage.local.get(null, function(bin){ console.debug('%o', bin); });
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vAPI.storage = chrome.storage.local;
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/******************************************************************************/
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/******************************************************************************/
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// https://github.com/gorhill/uMatrix/issues/234
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// https://developer.chrome.com/extensions/privacy#property-network
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// 2015-08-12: Wrapped Chrome API in try-catch statements. I had a fluke
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// event in which it appeared Chrome 46 decided to restart uBlock (for
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// unknown reasons) and again for unknown reasons the browser acted as if
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// uBlock did not declare the `privacy` permission in its manifest, putting
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// uBlock in a bad, non-functional state -- because call to `chrome.privacy`
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// API threw an exception.
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// https://github.com/gorhill/uBlock/issues/2048
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// Do not mess up with existing settings if not assigning them stricter
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// values.
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vAPI.browserSettings = (function() {
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// Not all platforms support `chrome.privacy`.
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if ( chrome.privacy instanceof Object === false ) { return; }
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return {
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// Whether the WebRTC-related privacy API is crashy is an open question
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// only for Chromium proper (because it can be compiled without the
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// WebRTC feature): hence avoid overhead of the evaluation (which uses
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// an iframe) for platforms where it's a non-issue.
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// https://github.com/uBlockOrigin/uBlock-issues/issues/9
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// Some Chromium builds are made to look like a Chrome build.
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webRTCSupported: vAPI.webextFlavor.soup.has('chromium') === false || undefined,
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// Calling with `true` means IP address leak is not prevented.
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// https://github.com/gorhill/uBlock/issues/533
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// We must first check wether this Chromium-based browser was compiled
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// with WebRTC support. To do this, we use an iframe, this way the
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// empty RTCPeerConnection object we create to test for support will
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// be properly garbage collected. This prevents issues such as
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// a computer unable to enter into sleep mode, as reported in the
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// Chrome store:
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// https://github.com/gorhill/uBlock/issues/533#issuecomment-167931681
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setWebrtcIPAddress: function(setting) {
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// We don't know yet whether this browser supports WebRTC: find out.
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if ( this.webRTCSupported === undefined ) {
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// If asked to leave WebRTC setting alone at this point in the
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// code, this means we never grabbed the setting in the first
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// place.
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if ( setting ) { return; }
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this.webRTCSupported = { setting: setting };
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let iframe = document.createElement('iframe');
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const messageHandler = ev => {
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if ( ev.origin !== self.location.origin ) { return; }
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window.removeEventListener('message', messageHandler);
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const setting = this.webRTCSupported.setting;
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this.webRTCSupported = ev.data === 'webRTCSupported';
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this.setWebrtcIPAddress(setting);
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iframe.parentNode.removeChild(iframe);
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iframe = null;
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};
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window.addEventListener('message', messageHandler);
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iframe.src = 'is-webrtc-supported.html';
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document.body.appendChild(iframe);
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return;
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}
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// We are waiting for a response from our iframe. This makes the code
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// safe to re-entrancy.
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if ( typeof this.webRTCSupported === 'object' ) {
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this.webRTCSupported.setting = setting;
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return;
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}
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// https://github.com/gorhill/uBlock/issues/533
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// WebRTC not supported: `webRTCMultipleRoutesEnabled` can NOT be
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// safely accessed. Accessing the property will cause full browser
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// crash.
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if ( this.webRTCSupported !== true ) { return; }
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const cp = chrome.privacy;
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const cpn = cp.network;
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// Older version of Chromium do not support this setting, and is
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// marked as "deprecated" since Chromium 48.
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if ( typeof cpn.webRTCMultipleRoutesEnabled === 'object' ) {
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try {
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if ( setting ) {
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cpn.webRTCMultipleRoutesEnabled.clear({
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scope: 'regular'
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}, vAPI.resetLastError);
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} else {
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cpn.webRTCMultipleRoutesEnabled.set({
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value: false,
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scope: 'regular'
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}, vAPI.resetLastError);
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}
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} catch(ex) {
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console.error(ex);
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}
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}
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// This setting became available in Chromium 48.
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if ( typeof cpn.webRTCIPHandlingPolicy === 'object' ) {
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try {
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if ( setting ) {
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cpn.webRTCIPHandlingPolicy.clear({
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scope: 'regular'
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}, vAPI.resetLastError);
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} else {
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// https://github.com/uBlockOrigin/uAssets/issues/333#issuecomment-289426678
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// Leverage virtuous side-effect of strictest setting.
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// https://github.com/gorhill/uBlock/issues/3009
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// Firefox currently works differently, use
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// `default_public_interface_only` for now.
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cpn.webRTCIPHandlingPolicy.set({
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value: vAPI.webextFlavor.soup.has('chromium')
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? 'disable_non_proxied_udp'
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: 'default_public_interface_only',
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scope: 'regular'
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}, vAPI.resetLastError);
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}
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} catch(ex) {
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console.error(ex);
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}
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}
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},
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set: function(details) {
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for ( var setting in details ) {
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if ( details.hasOwnProperty(setting) === false ) {
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continue;
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}
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switch ( setting ) {
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case 'prefetching':
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const enabled = !!details[setting];
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try {
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if ( enabled ) {
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chrome.privacy.network.networkPredictionEnabled.clear({
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scope: 'regular'
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}, vAPI.resetLastError);
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} else {
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chrome.privacy.network.networkPredictionEnabled.set({
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value: false,
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scope: 'regular'
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}, vAPI.resetLastError);
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}
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} catch(ex) {
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console.error(ex);
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}
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if ( vAPI.prefetching instanceof Function ) {
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vAPI.prefetching(enabled);
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}
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break;
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case 'hyperlinkAuditing':
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try {
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if ( !!details[setting] ) {
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chrome.privacy.websites.hyperlinkAuditingEnabled.clear({
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scope: 'regular'
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}, vAPI.resetLastError);
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} else {
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chrome.privacy.websites.hyperlinkAuditingEnabled.set({
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value: false,
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scope: 'regular'
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}, vAPI.resetLastError);
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}
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} catch(ex) {
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console.error(ex);
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}
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break;
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case 'webrtcIPAddress':
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this.setWebrtcIPAddress(!!details[setting]);
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break;
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default:
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break;
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}
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}
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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.tabs = {};
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/******************************************************************************/
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vAPI.isBehindTheSceneTabId = function(tabId) {
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return tabId < 0;
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};
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vAPI.unsetTabId = 0;
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vAPI.noTabId = -1; // definitely not any existing tab
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/******************************************************************************/
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// To remove when tabId-as-integer has been tested enough.
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var toChromiumTabId = function(tabId) {
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return typeof tabId === 'number' && !isNaN(tabId) && tabId > 0 ?
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tabId :
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0;
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};
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/******************************************************************************/
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vAPI.tabs.registerListeners = function() {
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var onNavigationClient = this.onNavigation || noopFunc;
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var onUpdatedClient = this.onUpdated || noopFunc;
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// https://developer.chrome.com/extensions/webNavigation
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// [onCreatedNavigationTarget ->]
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// onBeforeNavigate ->
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// onCommitted ->
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// onDOMContentLoaded ->
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// onCompleted
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// The chrome.webRequest.onBeforeRequest() won't be called for everything
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// else than `http`/`https`. Thus, in such case, we will bind the tab as
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// early as possible in order to increase the likelihood of a context
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// properly setup if network requests are fired from within the tab.
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// Example: Chromium + case #6 at
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// http://raymondhill.net/ublock/popup.html
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var reGoodForWebRequestAPI = /^https?:\/\//;
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// https://forums.lanik.us/viewtopic.php?f=62&t=32826
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// Chromium-based browsers: sanitize target URL. I've seen data: URI with
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// newline characters in standard fields, possibly as a way of evading
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// filters. As per spec, there should be no whitespaces in a data: URI's
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// standard fields.
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var sanitizeURL = function(url) {
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if ( url.startsWith('data:') === false ) { return url; }
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var pos = url.indexOf(',');
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if ( pos === -1 ) { return url; }
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var s = url.slice(0, pos);
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if ( s.search(/\s/) === -1 ) { return url; }
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return s.replace(/\s+/, '') + url.slice(pos);
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};
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var onCreatedNavigationTarget = function(details) {
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if ( typeof details.url !== 'string' ) {
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details.url = '';
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}
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if ( reGoodForWebRequestAPI.test(details.url) === false ) {
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details.frameId = 0;
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details.url = sanitizeURL(details.url);
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onNavigationClient(details);
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}
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if ( typeof vAPI.tabs.onPopupCreated === 'function' ) {
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vAPI.tabs.onPopupCreated(
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details.tabId,
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details.sourceTabId
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);
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}
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};
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var onCommitted = function(details) {
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details.url = sanitizeURL(details.url);
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onNavigationClient(details);
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};
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var onActivated = function(details) {
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if ( vAPI.contextMenu instanceof Object ) {
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vAPI.contextMenu.onMustUpdate(details.tabId);
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}
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};
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// https://github.com/gorhill/uBlock/issues/3073
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// - Fall back to `tab.url` when `changeInfo.url` is not set.
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var onUpdated = function(tabId, changeInfo, tab) {
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if ( typeof changeInfo.url !== 'string' ) {
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changeInfo.url = tab && tab.url;
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}
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if ( changeInfo.url ) {
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changeInfo.url = sanitizeURL(changeInfo.url);
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}
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onUpdatedClient(tabId, changeInfo, tab);
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};
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chrome.webNavigation.onCommitted.addListener(onCommitted);
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// Not supported on Firefox WebExtensions yet.
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if ( chrome.webNavigation.onCreatedNavigationTarget instanceof Object ) {
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chrome.webNavigation.onCreatedNavigationTarget.addListener(onCreatedNavigationTarget);
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}
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chrome.tabs.onActivated.addListener(onActivated);
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chrome.tabs.onUpdated.addListener(onUpdated);
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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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};
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/******************************************************************************/
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// Caller must be prepared to deal with nil tab argument.
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// https://code.google.com/p/chromium/issues/detail?id=410868#c8
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vAPI.tabs.get = function(tabId, callback) {
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if ( tabId === null ) {
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chrome.tabs.query(
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{ active: true, currentWindow: true },
|
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function(tabs) {
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void chrome.runtime.lastError;
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callback(
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Array.isArray(tabs) && tabs.length !== 0 ? tabs[0] : null
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);
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}
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);
|
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return;
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}
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tabId = toChromiumTabId(tabId);
|
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if ( tabId === 0 ) {
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callback(null);
|
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return;
|
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}
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|
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chrome.tabs.get(tabId, function(tab) {
|
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void chrome.runtime.lastError;
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callback(tab);
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});
|
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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
|
|
// index: -1, // undefined: end of the list, -1: following tab, or after index
|
|
// active: false, // opens the tab in background - true and undefined: foreground
|
|
// select: true, // if a tab is already opened with that url, then select it instead of opening a new one
|
|
// popup: true // open in a new window
|
|
|
|
vAPI.tabs.open = function(details) {
|
|
var targetURL = details.url;
|
|
if ( typeof targetURL !== 'string' || targetURL === '' ) {
|
|
return null;
|
|
}
|
|
|
|
// extension pages
|
|
if ( /^[\w-]{2,}:/.test(targetURL) !== true ) {
|
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targetURL = vAPI.getURL(targetURL);
|
|
}
|
|
|
|
// dealing with Chrome's asynchronous API
|
|
var wrapper = function() {
|
|
if ( details.active === undefined ) {
|
|
details.active = true;
|
|
}
|
|
|
|
var subWrapper = function() {
|
|
var _details = {
|
|
url: targetURL,
|
|
active: !!details.active
|
|
};
|
|
|
|
// Opening a tab from incognito window won't focus the window
|
|
// in which the tab was opened
|
|
var focusWindow = function(tab) {
|
|
if ( tab.active && chrome.windows instanceof Object ) {
|
|
chrome.windows.update(tab.windowId, { focused: true });
|
|
}
|
|
};
|
|
|
|
if ( !details.tabId ) {
|
|
if ( details.index !== undefined ) {
|
|
_details.index = details.index;
|
|
}
|
|
|
|
chrome.tabs.create(_details, focusWindow);
|
|
return;
|
|
}
|
|
|
|
// update doesn't accept index, must use move
|
|
chrome.tabs.update(toChromiumTabId(details.tabId), _details, function(tab) {
|
|
// if the tab doesn't exist
|
|
if ( vAPI.lastError() ) {
|
|
chrome.tabs.create(_details, focusWindow);
|
|
} else if ( details.index !== undefined ) {
|
|
chrome.tabs.move(tab.id, {index: details.index});
|
|
}
|
|
});
|
|
};
|
|
|
|
// Open in a standalone window
|
|
//
|
|
// https://github.com/uBlockOrigin/uBlock-issues/issues/168#issuecomment-413038191
|
|
// Not all platforms support browser.windows API.
|
|
//
|
|
// For some reasons, some platforms do not honor the left,top
|
|
// position when specified. I found that further calling
|
|
// windows.update again with the same position _may_ help.
|
|
if ( details.popup === true && browser.windows instanceof Object ) {
|
|
const options = {
|
|
url: details.url,
|
|
type: 'popup',
|
|
};
|
|
if ( details.box instanceof Object ) {
|
|
Object.assign(options, details.box);
|
|
}
|
|
browser.windows.create(options, win => {
|
|
if ( win instanceof Object === false ) { return; }
|
|
if ( details.box instanceof Object === false ) { return; }
|
|
if (
|
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win.left === details.box.left &&
|
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win.top === details.box.top
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|
) {
|
|
return;
|
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}
|
|
browser.windows.update(win.id, {
|
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left: details.box.left,
|
|
top: details.box.top
|
|
});
|
|
});
|
|
return;
|
|
}
|
|
|
|
if ( details.index !== -1 ) {
|
|
subWrapper();
|
|
return;
|
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}
|
|
|
|
vAPI.tabs.get(null, function(tab) {
|
|
if ( tab ) {
|
|
details.index = tab.index + 1;
|
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} else {
|
|
delete details.index;
|
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}
|
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|
|
subWrapper();
|
|
});
|
|
};
|
|
|
|
if ( !details.select ) {
|
|
wrapper();
|
|
return;
|
|
}
|
|
|
|
// https://github.com/gorhill/uBlock/issues/3053#issuecomment-332276818
|
|
// - Do not try to lookup uBO's own pages with FF 55 or less.
|
|
if (
|
|
vAPI.webextFlavor.soup.has('firefox') &&
|
|
vAPI.webextFlavor.major < 56
|
|
) {
|
|
wrapper();
|
|
return;
|
|
}
|
|
|
|
// https://developer.chrome.com/extensions/tabs#method-query
|
|
// "Note that fragment identifiers are not matched."
|
|
// It's a lie, fragment identifiers ARE matched. So we need to remove the
|
|
// fragment.
|
|
var pos = targetURL.indexOf('#'),
|
|
targetURLWithoutHash = pos === -1 ? targetURL : targetURL.slice(0, pos);
|
|
|
|
chrome.tabs.query({ url: targetURLWithoutHash }, function(tabs) {
|
|
void chrome.runtime.lastError;
|
|
var tab = Array.isArray(tabs) && tabs[0];
|
|
if ( !tab ) {
|
|
wrapper();
|
|
return;
|
|
}
|
|
var _details = {
|
|
active: true,
|
|
url: undefined
|
|
};
|
|
if ( targetURL !== tab.url ) {
|
|
_details.url = targetURL;
|
|
}
|
|
chrome.tabs.update(tab.id, _details, function(tab) {
|
|
if ( chrome.windows instanceof Object === false ) { return; }
|
|
chrome.windows.update(tab.windowId, { focused: true });
|
|
});
|
|
});
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
// Replace the URL of a tab. Noop if the tab does not exist.
|
|
|
|
vAPI.tabs.replace = function(tabId, url) {
|
|
tabId = toChromiumTabId(tabId);
|
|
if ( tabId === 0 ) { return; }
|
|
|
|
var targetURL = url;
|
|
|
|
// extension pages
|
|
if ( /^[\w-]{2,}:/.test(targetURL) !== true ) {
|
|
targetURL = vAPI.getURL(targetURL);
|
|
}
|
|
|
|
chrome.tabs.update(tabId, { url: targetURL }, vAPI.resetLastError);
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.tabs.remove = function(tabId) {
|
|
tabId = toChromiumTabId(tabId);
|
|
if ( tabId === 0 ) { return; }
|
|
|
|
chrome.tabs.remove(tabId, vAPI.resetLastError);
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.tabs.reload = function(tabId, bypassCache) {
|
|
tabId = toChromiumTabId(tabId);
|
|
if ( tabId === 0 ) { return; }
|
|
|
|
chrome.tabs.reload(
|
|
tabId,
|
|
{ bypassCache: bypassCache === true },
|
|
vAPI.resetLastError
|
|
);
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
// Select a specific tab.
|
|
|
|
vAPI.tabs.select = function(tabId) {
|
|
tabId = toChromiumTabId(tabId);
|
|
if ( tabId === 0 ) { return; }
|
|
|
|
chrome.tabs.update(tabId, { active: true }, function(tab) {
|
|
void chrome.runtime.lastError;
|
|
if ( !tab ) { return; }
|
|
if ( chrome.windows instanceof Object === false ) { return; }
|
|
chrome.windows.update(tab.windowId, { focused: true });
|
|
});
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.tabs.injectScript = function(tabId, details, callback) {
|
|
var onScriptExecuted = function() {
|
|
// https://code.google.com/p/chromium/issues/detail?id=410868#c8
|
|
void chrome.runtime.lastError;
|
|
if ( typeof callback === 'function' ) {
|
|
callback.apply(null, arguments);
|
|
}
|
|
};
|
|
if ( tabId ) {
|
|
chrome.tabs.executeScript(toChromiumTabId(tabId), details, onScriptExecuted);
|
|
} else {
|
|
chrome.tabs.executeScript(details, onScriptExecuted);
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// Must read: https://code.google.com/p/chromium/issues/detail?id=410868#c8
|
|
|
|
// https://github.com/chrisaljoudi/uBlock/issues/19
|
|
// https://github.com/chrisaljoudi/uBlock/issues/207
|
|
// Since we may be called asynchronously, the tab id may not exist
|
|
// anymore, so this ensures it does still exist.
|
|
|
|
// https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/browserAction#Browser_compatibility
|
|
// Firefox for Android does no support browser.browserAction.setIcon().
|
|
// Performance: use ImageData for platforms supporting it.
|
|
|
|
// https://github.com/uBlockOrigin/uBlock-issues/issues/32
|
|
// Ensure ImageData for toolbar icon is valid before use.
|
|
|
|
vAPI.setIcon = (function() {
|
|
const browserAction = chrome.browserAction,
|
|
titleTemplate =
|
|
chrome.runtime.getManifest().browser_action.default_title +
|
|
' ({badge})';
|
|
const icons = [
|
|
{
|
|
path: { '16': 'img/icon_16-off.png', '32': 'img/icon_32-off.png' }
|
|
},
|
|
{
|
|
path: { '16': 'img/icon_16.png', '32': 'img/icon_32.png' }
|
|
}
|
|
];
|
|
|
|
(function() {
|
|
if ( browserAction.setIcon === undefined ) { return; }
|
|
|
|
// The global badge background color.
|
|
if ( browserAction.setBadgeBackgroundColor !== undefined ) {
|
|
browserAction.setBadgeBackgroundColor({
|
|
color: [ 0x66, 0x66, 0x66, 0xFF ]
|
|
});
|
|
}
|
|
|
|
// As of 2018-05, benchmarks show that only Chromium benefits for sure
|
|
// from using ImageData.
|
|
//
|
|
// Chromium creates a new ImageData instance every call to setIcon
|
|
// with paths:
|
|
// https://cs.chromium.org/chromium/src/extensions/renderer/resources/set_icon.js?l=56&rcl=99be185c25738437ecfa0dafba72a26114196631
|
|
//
|
|
// Firefox uses an internal cache for each setIcon's paths:
|
|
// https://searchfox.org/mozilla-central/rev/5ff2d7683078c96e4b11b8a13674daded935aa44/browser/components/extensions/parent/ext-browserAction.js#631
|
|
if ( vAPI.webextFlavor.soup.has('chromium') === false ) { return; }
|
|
|
|
const imgs = [];
|
|
for ( let i = 0; i < icons.length; i++ ) {
|
|
let path = icons[i].path;
|
|
for ( const key in path ) {
|
|
if ( path.hasOwnProperty(key) === false ) { continue; }
|
|
imgs.push({ i: i, p: key });
|
|
}
|
|
}
|
|
|
|
// https://github.com/uBlockOrigin/uBlock-issues/issues/296
|
|
const safeGetImageData = function(ctx, w, h) {
|
|
let data;
|
|
try {
|
|
data = ctx.getImageData(0, 0, w, h);
|
|
} catch(ex) {
|
|
}
|
|
return data;
|
|
};
|
|
|
|
const onLoaded = function() {
|
|
for ( const img of imgs ) {
|
|
if ( img.r.complete === false ) { return; }
|
|
}
|
|
let ctx = document.createElement('canvas').getContext('2d');
|
|
let iconData = [ null, null ];
|
|
for ( const img of imgs ) {
|
|
let w = img.r.naturalWidth, h = img.r.naturalHeight;
|
|
ctx.width = w; ctx.height = h;
|
|
ctx.clearRect(0, 0, w, h);
|
|
ctx.drawImage(img.r, 0, 0);
|
|
if ( iconData[img.i] === null ) { iconData[img.i] = {}; }
|
|
const imgData = safeGetImageData(ctx, w, h);
|
|
if (
|
|
imgData instanceof Object === false ||
|
|
imgData.data instanceof Uint8ClampedArray === false ||
|
|
imgData.data[0] !== 0 ||
|
|
imgData.data[1] !== 0 ||
|
|
imgData.data[2] !== 0 ||
|
|
imgData.data[3] !== 0
|
|
) {
|
|
return;
|
|
}
|
|
iconData[img.i][img.p] = imgData;
|
|
}
|
|
for ( let i = 0; i < iconData.length; i++ ) {
|
|
if ( iconData[i] ) {
|
|
icons[i] = { imageData: iconData[i] };
|
|
}
|
|
}
|
|
};
|
|
for ( const img of imgs ) {
|
|
img.r = new Image();
|
|
img.r.addEventListener('load', onLoaded, { once: true });
|
|
img.r.src = icons[img.i].path[img.p];
|
|
}
|
|
})();
|
|
|
|
var onTabReady = function(tab, state, badge, parts) {
|
|
if ( vAPI.lastError() || !tab ) { return; }
|
|
|
|
if ( browserAction.setIcon !== undefined ) {
|
|
if ( parts === undefined || (parts & 0x01) !== 0 ) {
|
|
browserAction.setIcon(
|
|
Object.assign({ tabId: tab.id }, icons[state])
|
|
);
|
|
}
|
|
browserAction.setBadgeText({ tabId: tab.id, text: badge });
|
|
}
|
|
|
|
if ( browserAction.setTitle !== undefined ) {
|
|
browserAction.setTitle({
|
|
tabId: tab.id,
|
|
title: titleTemplate.replace(
|
|
'{badge}',
|
|
state === 1 ? (badge !== '' ? badge : '0') : 'off'
|
|
)
|
|
});
|
|
}
|
|
};
|
|
|
|
// parts: bit 0 = icon
|
|
// bit 1 = badge
|
|
|
|
return function(tabId, state, badge, parts) {
|
|
tabId = toChromiumTabId(tabId);
|
|
if ( tabId === 0 ) { return; }
|
|
|
|
chrome.tabs.get(tabId, function(tab) {
|
|
onTabReady(tab, state, badge, parts);
|
|
});
|
|
|
|
if ( vAPI.contextMenu instanceof Object ) {
|
|
vAPI.contextMenu.onMustUpdate(tabId);
|
|
}
|
|
};
|
|
})();
|
|
|
|
chrome.browserAction.onClicked.addListener(function(tab) {
|
|
vAPI.tabs.open({
|
|
select: true,
|
|
url: 'popup.html?tabId=' + tab.id + '&responsive=1'
|
|
});
|
|
});
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
vAPI.messaging = {
|
|
ports: new Map(),
|
|
listeners: {},
|
|
defaultHandler: null,
|
|
NOOPFUNC: noopFunc,
|
|
UNHANDLED: 'vAPI.messaging.notHandled'
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.messaging.listen = function(listenerName, callback) {
|
|
this.listeners[listenerName] = callback;
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.messaging.onPortMessage = (function() {
|
|
var messaging = vAPI.messaging;
|
|
|
|
// Use a wrapper to avoid closure and to allow reuse.
|
|
var CallbackWrapper = function(port, request) {
|
|
this.callback = this.proxy.bind(this); // bind once
|
|
this.init(port, request);
|
|
};
|
|
|
|
CallbackWrapper.prototype = {
|
|
init: function(port, request) {
|
|
this.port = port;
|
|
this.request = request;
|
|
return this;
|
|
},
|
|
proxy: function(response) {
|
|
// https://github.com/chrisaljoudi/uBlock/issues/383
|
|
if ( messaging.ports.has(this.port.name) ) {
|
|
this.port.postMessage({
|
|
auxProcessId: this.request.auxProcessId,
|
|
channelName: this.request.channelName,
|
|
msg: response !== undefined ? response : null
|
|
});
|
|
}
|
|
// Mark for reuse
|
|
this.port = this.request = null;
|
|
callbackWrapperJunkyard.push(this);
|
|
}
|
|
};
|
|
|
|
var callbackWrapperJunkyard = [];
|
|
|
|
var callbackWrapperFactory = function(port, request) {
|
|
var wrapper = callbackWrapperJunkyard.pop();
|
|
if ( wrapper ) {
|
|
return wrapper.init(port, request);
|
|
}
|
|
return new CallbackWrapper(port, request);
|
|
};
|
|
|
|
var toFramework = function(request, port, callback) {
|
|
var sender = port && port.sender;
|
|
if ( !sender ) { return; }
|
|
var tabId = sender.tab && sender.tab.id || undefined;
|
|
var msg = request.msg,
|
|
toPort;
|
|
switch ( msg.what ) {
|
|
case 'connectionAccepted':
|
|
case 'connectionRefused':
|
|
toPort = messaging.ports.get(msg.fromToken);
|
|
if ( toPort !== undefined ) {
|
|
msg.tabId = tabId;
|
|
toPort.postMessage(request);
|
|
} else {
|
|
msg.what = 'connectionBroken';
|
|
port.postMessage(request);
|
|
}
|
|
break;
|
|
case 'connectionRequested':
|
|
msg.tabId = tabId;
|
|
for ( toPort of messaging.ports.values() ) {
|
|
toPort.postMessage(request);
|
|
}
|
|
break;
|
|
case 'connectionBroken':
|
|
case 'connectionCheck':
|
|
case 'connectionMessage':
|
|
toPort = messaging.ports.get(
|
|
port.name === msg.fromToken ? msg.toToken : msg.fromToken
|
|
);
|
|
if ( toPort !== undefined ) {
|
|
msg.tabId = tabId;
|
|
toPort.postMessage(request);
|
|
} else {
|
|
msg.what = 'connectionBroken';
|
|
port.postMessage(request);
|
|
}
|
|
break;
|
|
case 'userCSS':
|
|
if ( tabId === undefined ) { break; }
|
|
var details = {
|
|
code: undefined,
|
|
frameId: sender.frameId,
|
|
matchAboutBlank: true
|
|
};
|
|
if ( vAPI.supportsUserStylesheets ) {
|
|
details.cssOrigin = 'user';
|
|
}
|
|
if ( msg.add ) {
|
|
details.runAt = 'document_start';
|
|
}
|
|
var cssText;
|
|
var countdown = 0;
|
|
var countdownHandler = function() {
|
|
void chrome.runtime.lastError;
|
|
countdown -= 1;
|
|
if ( countdown === 0 && typeof callback === 'function' ) {
|
|
callback();
|
|
}
|
|
};
|
|
for ( cssText of msg.add ) {
|
|
countdown += 1;
|
|
details.code = cssText;
|
|
chrome.tabs.insertCSS(tabId, details, countdownHandler);
|
|
}
|
|
if ( typeof chrome.tabs.removeCSS === 'function' ) {
|
|
for ( cssText of msg.remove ) {
|
|
countdown += 1;
|
|
details.code = cssText;
|
|
chrome.tabs.removeCSS(tabId, details, countdownHandler);
|
|
}
|
|
}
|
|
if ( countdown === 0 && typeof callback === 'function' ) {
|
|
callback();
|
|
}
|
|
break;
|
|
}
|
|
};
|
|
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=1392067
|
|
// Workaround: manually remove ports matching removed tab.
|
|
chrome.tabs.onRemoved.addListener(function(tabId) {
|
|
for ( var port of messaging.ports.values() ) {
|
|
var tab = port.sender && port.sender.tab;
|
|
if ( !tab ) { continue; }
|
|
if ( tab.id === tabId ) {
|
|
vAPI.messaging.onPortDisconnect(port);
|
|
}
|
|
}
|
|
});
|
|
|
|
return function(request, port) {
|
|
// prepare response
|
|
var callback = this.NOOPFUNC;
|
|
if ( request.auxProcessId !== undefined ) {
|
|
callback = callbackWrapperFactory(port, request).callback;
|
|
}
|
|
|
|
// Content process to main process: framework handler.
|
|
if ( request.channelName === 'vapi' ) {
|
|
toFramework(request, port, callback);
|
|
return;
|
|
}
|
|
|
|
// Auxiliary process to main process: specific handler
|
|
var r = this.UNHANDLED,
|
|
listener = this.listeners[request.channelName];
|
|
if ( typeof listener === 'function' ) {
|
|
r = listener(request.msg, port.sender, callback);
|
|
}
|
|
if ( r !== this.UNHANDLED ) { return; }
|
|
|
|
// Auxiliary process to main process: default handler
|
|
r = this.defaultHandler(request.msg, port.sender, callback);
|
|
if ( r !== this.UNHANDLED ) { return; }
|
|
|
|
// Auxiliary process to main process: no handler
|
|
console.error(
|
|
'vAPI.messaging.onPortMessage > unhandled request: %o',
|
|
request
|
|
);
|
|
|
|
// Need to callback anyways in case caller expected an answer, or
|
|
// else there is a memory leak on caller's side
|
|
callback();
|
|
}.bind(vAPI.messaging);
|
|
})();
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.messaging.onPortDisconnect = function(port) {
|
|
port.onDisconnect.removeListener(this.onPortDisconnect);
|
|
port.onMessage.removeListener(this.onPortMessage);
|
|
this.ports.delete(port.name);
|
|
}.bind(vAPI.messaging);
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.messaging.onPortConnect = function(port) {
|
|
port.onDisconnect.addListener(this.onPortDisconnect);
|
|
port.onMessage.addListener(this.onPortMessage);
|
|
this.ports.set(port.name, port);
|
|
}.bind(vAPI.messaging);
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.messaging.setup = function(defaultHandler) {
|
|
// Already setup?
|
|
if ( this.defaultHandler !== null ) {
|
|
return;
|
|
}
|
|
|
|
if ( typeof defaultHandler !== 'function' ) {
|
|
defaultHandler = function(){ return vAPI.messaging.UNHANDLED; };
|
|
}
|
|
this.defaultHandler = defaultHandler;
|
|
|
|
chrome.runtime.onConnect.addListener(this.onPortConnect);
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.messaging.broadcast = function(message) {
|
|
const messageWrapper = { broadcast: true, msg: message };
|
|
for ( const port of this.ports.values() ) {
|
|
try {
|
|
port.postMessage(messageWrapper);
|
|
} catch(ex) {
|
|
this.ports.delete(port.name);
|
|
}
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// https://github.com/gorhill/uBlock/issues/3474
|
|
// https://github.com/gorhill/uBlock/issues/2823
|
|
// Foil ability of web pages to identify uBO through
|
|
// its web accessible resources.
|
|
// https://github.com/gorhill/uBlock/issues/3497
|
|
// Prevent web pages from interfering with uBO's element picker
|
|
// https://github.com/uBlockOrigin/uBlock-issues/issues/550
|
|
// A specific secret can be used for at most one second.
|
|
|
|
vAPI.warSecret = (function() {
|
|
const generateSecret = ( ) => {
|
|
return Math.floor(Math.random() * 982451653 + 982451653).toString(36) +
|
|
Math.floor(Math.random() * 982451653 + 982451653).toString(36);
|
|
};
|
|
|
|
const root = vAPI.getURL('/');
|
|
const secrets = [];
|
|
let lastSecretTime = 0;
|
|
|
|
const guard = function(details) {
|
|
const url = details.url;
|
|
const pos = secrets.findIndex(secret =>
|
|
url.lastIndexOf(`?secret=${secret}`) !== -1
|
|
);
|
|
if ( pos === -1 ) {
|
|
return { redirectUrl: root };
|
|
}
|
|
secrets.splice(pos, 1);
|
|
};
|
|
|
|
chrome.webRequest.onBeforeRequest.addListener(
|
|
guard,
|
|
{
|
|
urls: [ root + 'web_accessible_resources/*' ]
|
|
},
|
|
[ 'blocking' ]
|
|
);
|
|
|
|
return ( ) => {
|
|
if ( secrets.length !== 0 ) {
|
|
if ( (Date.now() - lastSecretTime) > 5000 ) {
|
|
secrets.splice(0);
|
|
} else if ( secrets.length > 256 ) {
|
|
secrets.splice(0, secrets.length - 192);
|
|
}
|
|
}
|
|
lastSecretTime = Date.now();
|
|
const secret = generateSecret();
|
|
secrets.push(secret);
|
|
return `?secret=${secret}`;
|
|
};
|
|
})();
|
|
|
|
vAPI.net = {
|
|
listenerMap: new WeakMap(),
|
|
// legacy Chromium understands only these network request types.
|
|
validTypes: (function() {
|
|
let types = new Set([
|
|
'main_frame',
|
|
'sub_frame',
|
|
'stylesheet',
|
|
'script',
|
|
'image',
|
|
'object',
|
|
'xmlhttprequest',
|
|
'other'
|
|
]);
|
|
let wrrt = browser.webRequest.ResourceType;
|
|
if ( wrrt instanceof Object ) {
|
|
for ( let typeKey in wrrt ) {
|
|
if ( wrrt.hasOwnProperty(typeKey) ) {
|
|
types.add(wrrt[typeKey]);
|
|
}
|
|
}
|
|
}
|
|
return types;
|
|
})(),
|
|
denormalizeFilters: null,
|
|
normalizeDetails: null,
|
|
addListener: function(which, clientListener, filters, options) {
|
|
if ( typeof this.denormalizeFilters === 'function' ) {
|
|
filters = this.denormalizeFilters(filters);
|
|
}
|
|
let actualListener;
|
|
if ( typeof this.normalizeDetails === 'function' ) {
|
|
actualListener = function(details) {
|
|
vAPI.net.normalizeDetails(details);
|
|
return clientListener(details);
|
|
};
|
|
this.listenerMap.set(clientListener, actualListener);
|
|
}
|
|
browser.webRequest[which].addListener(
|
|
actualListener || clientListener,
|
|
filters,
|
|
options
|
|
);
|
|
},
|
|
removeListener: function(which, clientListener) {
|
|
let actualListener = this.listenerMap.get(clientListener);
|
|
if ( actualListener !== undefined ) {
|
|
this.listenerMap.delete(clientListener);
|
|
}
|
|
browser.webRequest[which].removeListener(
|
|
actualListener || clientListener
|
|
);
|
|
},
|
|
};
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/contextMenus#Browser_compatibility
|
|
// Firefox for Android does no support browser.contextMenus.
|
|
|
|
vAPI.contextMenu = chrome.contextMenus && {
|
|
_callback: null,
|
|
_entries: [],
|
|
_createEntry: function(entry) {
|
|
chrome.contextMenus.create(
|
|
JSON.parse(JSON.stringify(entry)),
|
|
vAPI.resetLastError
|
|
);
|
|
},
|
|
onMustUpdate: function() {},
|
|
setEntries: function(entries, callback) {
|
|
entries = entries || [];
|
|
var n = Math.max(this._entries.length, entries.length),
|
|
oldEntryId, newEntry;
|
|
for ( var i = 0; i < n; i++ ) {
|
|
oldEntryId = this._entries[i];
|
|
newEntry = entries[i];
|
|
if ( oldEntryId && newEntry ) {
|
|
if ( newEntry.id !== oldEntryId ) {
|
|
chrome.contextMenus.remove(oldEntryId);
|
|
this._createEntry(newEntry);
|
|
this._entries[i] = newEntry.id;
|
|
}
|
|
} else if ( oldEntryId && !newEntry ) {
|
|
chrome.contextMenus.remove(oldEntryId);
|
|
} else if ( !oldEntryId && newEntry ) {
|
|
this._createEntry(newEntry);
|
|
this._entries[i] = newEntry.id;
|
|
}
|
|
}
|
|
n = this._entries.length = entries.length;
|
|
callback = callback || null;
|
|
if ( callback === this._callback ) {
|
|
return;
|
|
}
|
|
if ( n !== 0 && callback !== null ) {
|
|
chrome.contextMenus.onClicked.addListener(callback);
|
|
this._callback = callback;
|
|
} else if ( n === 0 && this._callback !== null ) {
|
|
chrome.contextMenus.onClicked.removeListener(this._callback);
|
|
this._callback = null;
|
|
}
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
vAPI.commands = chrome.commands;
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// https://github.com/gorhill/uBlock/issues/531
|
|
// Storage area dedicated to admin settings. Read-only.
|
|
|
|
// https://github.com/gorhill/uBlock/commit/43a5ed735b95a575a9339b6e71a1fcb27a99663b#commitcomment-13965030
|
|
// Not all Chromium-based browsers support managed storage. Merely testing or
|
|
// exception handling in this case does NOT work: I don't know why. The
|
|
// extension on Opera ends up in a non-sensical state, whereas vAPI become
|
|
// undefined out of nowhere. So only solution left is to test explicitly for
|
|
// Opera.
|
|
// https://github.com/gorhill/uBlock/issues/900
|
|
// Also, UC Browser: http://www.upsieutoc.com/image/WXuH
|
|
|
|
vAPI.adminStorage = chrome.storage.managed && {
|
|
getItem: function(key, callback) {
|
|
var onRead = function(store) {
|
|
var data;
|
|
if (
|
|
!chrome.runtime.lastError &&
|
|
typeof store === 'object' &&
|
|
store !== null
|
|
) {
|
|
data = store[key];
|
|
}
|
|
callback(data);
|
|
};
|
|
try {
|
|
chrome.storage.managed.get(key, onRead);
|
|
} catch (ex) {
|
|
callback();
|
|
}
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
vAPI.cloud = (function() {
|
|
// Not all platforms support `chrome.storage.sync`.
|
|
if ( chrome.storage.sync instanceof Object === false ) {
|
|
return;
|
|
}
|
|
|
|
let chunkCountPerFetch = 16; // Must be a power of 2
|
|
|
|
// Mind chrome.storage.sync.MAX_ITEMS (512 at time of writing)
|
|
let maxChunkCountPerItem = Math.floor(512 * 0.75) & ~(chunkCountPerFetch - 1);
|
|
|
|
// Mind chrome.storage.sync.QUOTA_BYTES_PER_ITEM (8192 at time of writing)
|
|
// https://github.com/gorhill/uBlock/issues/3006
|
|
// For Firefox, we will use a lower ratio to allow for more overhead for
|
|
// the infrastructure. Unfortunately this leads to less usable space for
|
|
// actual data, but all of this is provided for free by browser vendors,
|
|
// so we need to accept and deal with these limitations.
|
|
let evalMaxChunkSize = function() {
|
|
return Math.floor(
|
|
(chrome.storage.sync.QUOTA_BYTES_PER_ITEM || 8192) *
|
|
(vAPI.webextFlavor.soup.has('firefox') ? 0.6 : 0.75)
|
|
);
|
|
};
|
|
|
|
let maxChunkSize = evalMaxChunkSize();
|
|
|
|
// The real actual webextFlavor value may not be set in stone, so listen
|
|
// for possible future changes.
|
|
window.addEventListener('webextFlavor', function() {
|
|
maxChunkSize = evalMaxChunkSize();
|
|
}, { once: true });
|
|
|
|
// Mind chrome.storage.sync.QUOTA_BYTES (128 kB at time of writing)
|
|
// Firefox:
|
|
// https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/storage/sync
|
|
// > You can store up to 100KB of data using this API/
|
|
let maxStorageSize = chrome.storage.sync.QUOTA_BYTES || 102400;
|
|
|
|
let options = {
|
|
defaultDeviceName: window.navigator.platform,
|
|
deviceName: vAPI.localStorage.getItem('deviceName') || ''
|
|
};
|
|
|
|
// This is used to find out a rough count of how many chunks exists:
|
|
// We "poll" at specific index in order to get a rough idea of how
|
|
// large is the stored string.
|
|
// This allows reading a single item with only 2 sync operations -- a
|
|
// good thing given chrome.storage.sync.MAX_WRITE_OPERATIONS_PER_MINUTE
|
|
// and chrome.storage.sync.MAX_WRITE_OPERATIONS_PER_HOUR.
|
|
|
|
let getCoarseChunkCount = function(dataKey, callback) {
|
|
let bin = {};
|
|
for ( let i = 0; i < maxChunkCountPerItem; i += 16 ) {
|
|
bin[dataKey + i.toString()] = '';
|
|
}
|
|
|
|
chrome.storage.sync.get(bin, function(bin) {
|
|
if ( chrome.runtime.lastError ) {
|
|
return callback(0, chrome.runtime.lastError.message);
|
|
}
|
|
|
|
let chunkCount = 0;
|
|
for ( let i = 0; i < maxChunkCountPerItem; i += 16 ) {
|
|
if ( bin[dataKey + i.toString()] === '' ) { break; }
|
|
chunkCount = i + 16;
|
|
}
|
|
|
|
callback(chunkCount);
|
|
});
|
|
};
|
|
|
|
let deleteChunks = function(dataKey, start) {
|
|
let keys = [];
|
|
|
|
// No point in deleting more than:
|
|
// - The max number of chunks per item
|
|
// - The max number of chunks per storage limit
|
|
let n = Math.min(
|
|
maxChunkCountPerItem,
|
|
Math.ceil(maxStorageSize / maxChunkSize)
|
|
);
|
|
for ( let i = start; i < n; i++ ) {
|
|
keys.push(dataKey + i.toString());
|
|
}
|
|
if ( keys.length !== 0 ) {
|
|
chrome.storage.sync.remove(keys);
|
|
}
|
|
};
|
|
|
|
let start = function(/* dataKeys */) {
|
|
};
|
|
|
|
let push = function(dataKey, data, callback) {
|
|
|
|
let bin = {
|
|
'source': options.deviceName || options.defaultDeviceName,
|
|
'tstamp': Date.now(),
|
|
'data': data,
|
|
'size': 0
|
|
};
|
|
bin.size = JSON.stringify(bin).length;
|
|
let item = JSON.stringify(bin);
|
|
|
|
// Chunkify taking into account QUOTA_BYTES_PER_ITEM:
|
|
// https://developer.chrome.com/extensions/storage#property-sync
|
|
// "The maximum size (in bytes) of each individual item in sync
|
|
// "storage, as measured by the JSON stringification of its value
|
|
// "plus its key length."
|
|
bin = {};
|
|
let chunkCount = Math.ceil(item.length / maxChunkSize);
|
|
for ( let i = 0; i < chunkCount; i++ ) {
|
|
bin[dataKey + i.toString()] = item.substr(i * maxChunkSize, maxChunkSize);
|
|
}
|
|
bin[dataKey + chunkCount.toString()] = ''; // Sentinel
|
|
|
|
chrome.storage.sync.set(bin, function() {
|
|
let errorStr;
|
|
if ( chrome.runtime.lastError ) {
|
|
errorStr = chrome.runtime.lastError.message;
|
|
// https://github.com/gorhill/uBlock/issues/3006#issuecomment-332597677
|
|
// - Delete all that was pushed in case of failure.
|
|
// - It's unknown whether such issue applies only to Firefox:
|
|
// until such cases are reported for other browsers, we will
|
|
// reset the (now corrupted) content of the cloud storage
|
|
// only on Firefox.
|
|
if ( vAPI.webextFlavor.soup.has('firefox') ) {
|
|
chunkCount = 0;
|
|
}
|
|
}
|
|
callback(errorStr);
|
|
|
|
// Remove potentially unused trailing chunks
|
|
deleteChunks(dataKey, chunkCount);
|
|
});
|
|
};
|
|
|
|
let pull = function(dataKey, callback) {
|
|
|
|
let assembleChunks = function(bin) {
|
|
if ( chrome.runtime.lastError ) {
|
|
callback(null, chrome.runtime.lastError.message);
|
|
return;
|
|
}
|
|
|
|
// Assemble chunks into a single string.
|
|
// https://www.reddit.com/r/uMatrix/comments/8lc9ia/my_rules_tab_hangs_with_cloud_storage_support/
|
|
// Explicit sentinel is not necessarily present: this can
|
|
// happen when the number of chunks is a multiple of
|
|
// chunkCountPerFetch. Hence why we must also test against
|
|
// undefined.
|
|
let json = [], jsonSlice;
|
|
let i = 0;
|
|
for (;;) {
|
|
jsonSlice = bin[dataKey + i.toString()];
|
|
if ( jsonSlice === '' || jsonSlice === undefined ) { break; }
|
|
json.push(jsonSlice);
|
|
i += 1;
|
|
}
|
|
|
|
let entry = null;
|
|
try {
|
|
entry = JSON.parse(json.join(''));
|
|
} catch(ex) {
|
|
}
|
|
callback(entry);
|
|
};
|
|
|
|
let fetchChunks = function(coarseCount, errorStr) {
|
|
if ( coarseCount === 0 || typeof errorStr === 'string' ) {
|
|
callback(null, errorStr);
|
|
return;
|
|
}
|
|
|
|
let bin = {};
|
|
for ( let i = 0; i < coarseCount; i++ ) {
|
|
bin[dataKey + i.toString()] = '';
|
|
}
|
|
|
|
chrome.storage.sync.get(bin, assembleChunks);
|
|
};
|
|
|
|
getCoarseChunkCount(dataKey, fetchChunks);
|
|
};
|
|
|
|
let getOptions = function(callback) {
|
|
if ( typeof callback !== 'function' ) { return; }
|
|
callback(options);
|
|
};
|
|
|
|
let setOptions = function(details, callback) {
|
|
if ( typeof details !== 'object' || details === null ) {
|
|
return;
|
|
}
|
|
|
|
if ( typeof details.deviceName === 'string' ) {
|
|
vAPI.localStorage.setItem('deviceName', details.deviceName);
|
|
options.deviceName = details.deviceName;
|
|
}
|
|
|
|
getOptions(callback);
|
|
};
|
|
|
|
return {
|
|
start: start,
|
|
push: push,
|
|
pull: pull,
|
|
getOptions: getOptions,
|
|
setOptions: setOptions
|
|
};
|
|
})();
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
})();
|
|
|
|
/******************************************************************************/
|