mirror of
https://github.com/gorhill/uBlock.git
synced 2024-07-08 12:57:57 +02:00
1712 lines
59 KiB
JavaScript
1712 lines
59 KiB
JavaScript
/*******************************************************************************
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uBlock Origin - a browser extension to block requests.
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Copyright (C) 2014-2015 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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{
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// >>>>> start of local scope
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/******************************************************************************/
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/******************************************************************************/
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const browser = self.browser;
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const manifest = browser.runtime.getManifest();
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vAPI.cantWebsocket =
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browser.webRequest.ResourceType instanceof Object === false ||
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browser.webRequest.ResourceType.WEBSOCKET !== 'websocket';
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vAPI.canWASM = vAPI.webextFlavor.soup.has('chromium') === false;
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if ( vAPI.canWASM === false ) {
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const csp = manifest.content_security_policy;
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vAPI.canWASM = csp !== undefined && csp.indexOf("'wasm-eval'") !== -1;
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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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/******************************************************************************/
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vAPI.randomToken = function() {
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const n = Math.random();
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return String.fromCharCode(n * 26 + 97) +
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Math.floor(
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(0.25 + n * 0.75) * Number.MAX_SAFE_INTEGER
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).toString(36).slice(-8);
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};
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/******************************************************************************/
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vAPI.app = {
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name: manifest.name.replace(/ dev\w+ build/, ''),
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version: (( ) => {
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let version = manifest.version;
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const match = /(\d+\.\d+\.\d+)(?:\.(\d+))?/.exec(version);
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if ( match && match[2] ) {
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const 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 version;
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})(),
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intFromVersion: function(s) {
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const parts = s.match(/(?:^|\.|b|rc)\d+/g);
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if ( parts === null ) { return 0; }
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let vint = 0;
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for ( let i = 0; i < 4; i++ ) {
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const pstr = parts[i] || '';
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let pint;
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if ( pstr === '' ) {
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pint = 0;
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} else if ( pstr.startsWith('.') || pstr.startsWith('b') ) {
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pint = parseInt(pstr.slice(1), 10);
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} else if ( pstr.startsWith('rc') ) {
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pint = parseInt(pstr.slice(2), 10) + 100;
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} else {
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pint = parseInt(pstr, 10);
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}
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vint = vint * 1000 + pint;
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}
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return vint;
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},
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restart: function() {
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browser.runtime.reload();
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},
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};
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/******************************************************************************/
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/******************************************************************************/
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vAPI.storage = webext.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.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/privacy/network
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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 = (( ) => {
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// Not all platforms support `browser.privacy`.
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const bp = webext.privacy;
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if ( bp 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 bpn = bp.network;
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if ( setting ) {
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bpn.webRTCIPHandlingPolicy.clear({
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scope: 'regular',
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});
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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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// https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/privacy/network#Browser_compatibility
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// Firefox 70+ supports `disable_non_proxied_udp`
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const value =
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vAPI.webextFlavor.soup.has('firefox') === false ||
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vAPI.webextFlavor.major < 70
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? 'default_public_interface_only'
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: 'disable_non_proxied_udp';
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bpn.webRTCIPHandlingPolicy.set({ value, scope: 'regular' });
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}
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},
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set: function(details) {
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for ( const setting in details ) {
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if ( details.hasOwnProperty(setting) === false ) { continue; }
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switch ( setting ) {
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case 'prefetching':
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const enabled = !!details[setting];
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if ( enabled ) {
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bp.network.networkPredictionEnabled.clear({
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scope: 'regular',
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});
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} else {
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bp.network.networkPredictionEnabled.set({
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value: false,
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scope: 'regular',
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});
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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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if ( !!details[setting] ) {
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bp.websites.hyperlinkAuditingEnabled.clear({
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scope: 'regular',
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});
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} else {
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bp.websites.hyperlinkAuditingEnabled.set({
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value: false,
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scope: 'regular',
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});
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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.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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// To ensure we always use a good tab id
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const toTabId = function(tabId) {
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return typeof tabId === 'number' && isNaN(tabId) === false
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? tabId
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: 0;
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};
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// https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/webNavigation
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// https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs
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vAPI.Tabs = class {
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constructor() {
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browser.webNavigation.onCreatedNavigationTarget.addListener(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 ( /^https?:\/\//.test(details.url) === false ) {
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details.frameId = 0;
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details.url = this.sanitizeURL(details.url);
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this.onNavigation(details);
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}
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this.onCreated(details);
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});
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browser.webNavigation.onCommitted.addListener(details => {
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details.url = this.sanitizeURL(details.url);
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this.onNavigation(details);
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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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browser.tabs.onUpdated.addListener((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 = this.sanitizeURL(changeInfo.url);
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}
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this.onUpdated(tabId, changeInfo, tab);
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});
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browser.tabs.onActivated.addListener(details => {
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this.onActivated(details);
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});
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// https://github.com/uBlockOrigin/uBlock-issues/issues/151
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// https://github.com/uBlockOrigin/uBlock-issues/issues/680#issuecomment-515215220
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if ( browser.windows instanceof Object ) {
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browser.windows.onFocusChanged.addListener(async windowId => {
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if ( windowId === browser.windows.WINDOW_ID_NONE ) { return; }
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const tabs = await vAPI.tabs.query({ active: true, windowId });
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if ( tabs.length === 0 ) { return; }
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const tab = tabs[0];
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this.onActivated({ tabId: tab.id, windowId: tab.windowId });
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});
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}
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browser.tabs.onRemoved.addListener((tabId, details) => {
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this.onClosed(tabId, details);
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});
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}
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async executeScript() {
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let result;
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try {
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result = await webext.tabs.executeScript(...arguments);
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}
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catch(reason) {
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}
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return Array.isArray(result) ? result : [];
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}
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async get(tabId) {
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if ( tabId === null ) {
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return this.getCurrent();
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}
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if ( tabId <= 0 ) { return null; }
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let tab;
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try {
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tab = await webext.tabs.get(tabId);
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}
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catch(reason) {
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}
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return tab instanceof Object ? tab : null;
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}
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async getCurrent() {
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const tabs = await this.query({ active: true, currentWindow: true });
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return tabs.length !== 0 ? tabs[0] : null;
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}
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async insertCSS(tabId, details) {
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if ( vAPI.supportsUserStylesheets ) {
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details.cssOrigin = 'user';
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}
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try {
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await webext.tabs.insertCSS(...arguments);
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}
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catch(reason) {
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}
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}
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async query(queryInfo) {
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let tabs;
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try {
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tabs = await webext.tabs.query(queryInfo);
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}
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catch(reason) {
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}
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return Array.isArray(tabs) ? tabs : [];
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}
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async removeCSS(tabId, details) {
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if ( vAPI.supportsUserStylesheets ) {
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details.cssOrigin = 'user';
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}
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try {
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await webext.tabs.removeCSS(...arguments);
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}
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catch(reason) {
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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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// - index: -1, => undefined: end of the list, -1: following tab,
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// or after index
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// - active: false, => opens the tab... in background: true,
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// foreground: undefined
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// - popup: 'popup' => open in a new window
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async create(url, details) {
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if ( details.active === undefined ) {
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details.active = true;
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}
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const subWrapper = async ( ) => {
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const updateDetails = {
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url: url,
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active: !!details.active
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};
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// Opening a tab from incognito window won't focus the window
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// in which the tab was opened
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const focusWindow = tab => {
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if ( tab.active && vAPI.windows instanceof Object ) {
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vAPI.windows.update(tab.windowId, { focused: true });
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}
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};
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if ( !details.tabId ) {
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if ( details.index !== undefined ) {
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updateDetails.index = details.index;
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}
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browser.tabs.create(updateDetails, focusWindow);
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return;
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}
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// update doesn't accept index, must use move
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const tab = await vAPI.tabs.update(
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toTabId(details.tabId),
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updateDetails
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);
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// if the tab doesn't exist
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if ( tab === null ) {
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browser.tabs.create(updateDetails, focusWindow);
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} else if ( details.index !== undefined ) {
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browser.tabs.move(tab.id, { index: details.index });
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}
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};
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// Open in a standalone window
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//
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// https://github.com/uBlockOrigin/uBlock-issues/issues/168#issuecomment-413038191
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// Not all platforms support vAPI.windows.
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//
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// For some reasons, some platforms do not honor the left,top
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// position when specified. I found that further calling
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// windows.update again with the same position _may_ help.
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if ( details.popup !== undefined && vAPI.windows instanceof Object ) {
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const createDetails = {
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url: details.url,
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type: details.popup,
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};
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if ( details.box instanceof Object ) {
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Object.assign(createDetails, details.box);
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}
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const win = await vAPI.windows.create(createDetails);
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if ( win === null ) { return; }
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if ( details.box instanceof Object === false ) { return; }
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if (
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win.left === details.box.left &&
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win.top === details.box.top
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) {
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return;
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}
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vAPI.windows.update(win.id, {
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left: details.box.left,
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top: details.box.top
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});
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return;
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}
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|
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if ( details.index !== -1 ) {
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subWrapper();
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return;
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}
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const tab = await vAPI.tabs.getCurrent();
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if ( tab !== null ) {
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details.index = tab.index + 1;
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} else {
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details.index = undefined;
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}
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subWrapper();
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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
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// after index
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// - active: false, => opens the tab in background - true and undefined:
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// foreground
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// - select: true, => if a tab is already opened with that url, then select
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// it instead of opening a new one
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// - popup: true => open in a new window
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|
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async open(details) {
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let 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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|
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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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if ( !details.select ) {
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this.create(targetURL, details);
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return;
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}
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|
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// https://github.com/gorhill/uBlock/issues/3053#issuecomment-332276818
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// Do not try to lookup uBO's own pages with FF 55 or less.
|
|
if (
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vAPI.webextFlavor.soup.has('firefox') &&
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vAPI.webextFlavor.major < 56
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) {
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this.create(targetURL, details);
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return;
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}
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|
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// https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/query#Parameters
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// "Note that fragment identifiers are not matched."
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// Fragment identifiers ARE matched -- we need to remove the fragment.
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const pos = targetURL.indexOf('#');
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const targetURLWithoutHash = pos === -1
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? targetURL
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: targetURL.slice(0, pos);
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const tabs = await vAPI.tabs.query({ url: targetURLWithoutHash });
|
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if ( tabs.length === 0 ) {
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this.create(targetURL, details);
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return;
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}
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let tab = tabs[0];
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const updateDetails = { active: true };
|
|
// https://github.com/uBlockOrigin/uBlock-issues/issues/592
|
|
if ( tab.url.startsWith(targetURL) === false ) {
|
|
updateDetails.url = targetURL;
|
|
}
|
|
tab = await vAPI.tabs.update(tab.id, updateDetails);
|
|
if ( vAPI.windows instanceof Object === false ) { return; }
|
|
vAPI.windows.update(tab.windowId, { focused: true });
|
|
}
|
|
|
|
async update() {
|
|
let tab;
|
|
try {
|
|
tab = await webext.tabs.update(...arguments);
|
|
}
|
|
catch (reason) {
|
|
}
|
|
return tab instanceof Object ? tab : null;
|
|
}
|
|
|
|
// Replace the URL of a tab. Noop if the tab does not exist.
|
|
replace(tabId, url) {
|
|
tabId = toTabId(tabId);
|
|
if ( tabId === 0 ) { return; }
|
|
|
|
let targetURL = url;
|
|
|
|
// extension pages
|
|
if ( /^[\w-]{2,}:/.test(targetURL) !== true ) {
|
|
targetURL = vAPI.getURL(targetURL);
|
|
}
|
|
|
|
vAPI.tabs.update(tabId, { url: targetURL });
|
|
}
|
|
|
|
async remove(tabId) {
|
|
tabId = toTabId(tabId);
|
|
if ( tabId === 0 ) { return; }
|
|
try {
|
|
await webext.tabs.remove(tabId);
|
|
}
|
|
catch (reason) {
|
|
}
|
|
}
|
|
|
|
async reload(tabId, bypassCache = false) {
|
|
tabId = toTabId(tabId);
|
|
if ( tabId === 0 ) { return; }
|
|
try {
|
|
await webext.tabs.reload(
|
|
tabId,
|
|
{ bypassCache: bypassCache === true }
|
|
);
|
|
}
|
|
catch (reason) {
|
|
}
|
|
}
|
|
|
|
async select(tabId) {
|
|
tabId = toTabId(tabId);
|
|
if ( tabId === 0 ) { return; }
|
|
const tab = await vAPI.tabs.update(tabId, { active: true });
|
|
if ( tab === null ) { return; }
|
|
if ( vAPI.windows instanceof Object === false ) { return; }
|
|
vAPI.windows.update(tab.windowId, { focused: true });
|
|
}
|
|
|
|
// https://forums.lanik.us/viewtopic.php?f=62&t=32826
|
|
// Chromium-based browsers: sanitize target URL. I've seen data: URI with
|
|
// newline characters in standard fields, possibly as a way of evading
|
|
// filters. As per spec, there should be no whitespaces in a data: URI's
|
|
// standard fields.
|
|
|
|
sanitizeURL(url) {
|
|
if ( url.startsWith('data:') === false ) { return url; }
|
|
const pos = url.indexOf(',');
|
|
if ( pos === -1 ) { return url; }
|
|
const s = url.slice(0, pos);
|
|
if ( s.search(/\s/) === -1 ) { return url; }
|
|
return s.replace(/\s+/, '') + url.slice(pos);
|
|
}
|
|
|
|
onActivated(/* details */) {
|
|
}
|
|
|
|
onClosed(/* tabId, details */) {
|
|
}
|
|
|
|
onCreated(/* details */) {
|
|
}
|
|
|
|
onNavigation(/* details */) {
|
|
}
|
|
|
|
onUpdated(/* tabId, changeInfo, tab */) {
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
if ( webext.windows instanceof Object ) {
|
|
vAPI.windows = {
|
|
get: async function() {
|
|
let win;
|
|
try {
|
|
win = await webext.windows.get(...arguments);
|
|
}
|
|
catch (reason) {
|
|
}
|
|
return win instanceof Object ? win : null;
|
|
},
|
|
create: async function() {
|
|
let win;
|
|
try {
|
|
win = await webext.windows.create(...arguments);
|
|
}
|
|
catch (reason) {
|
|
}
|
|
return win instanceof Object ? win : null;
|
|
},
|
|
update: async function() {
|
|
let win;
|
|
try {
|
|
win = await webext.windows.update(...arguments);
|
|
}
|
|
catch (reason) {
|
|
}
|
|
return win instanceof Object ? win : null;
|
|
},
|
|
};
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
if ( webext.browserAction instanceof Object ) {
|
|
vAPI.browserAction = {
|
|
setTitle: async function() {
|
|
try {
|
|
await webext.browserAction.setTitle(...arguments);
|
|
}
|
|
catch (reason) {
|
|
}
|
|
},
|
|
};
|
|
// Not supported on Firefox for Android
|
|
if ( webext.browserAction.setIcon ) {
|
|
vAPI.browserAction.setBadgeTextColor = async function() {
|
|
try {
|
|
await webext.browserAction.setBadgeTextColor(...arguments);
|
|
}
|
|
catch (reason) {
|
|
}
|
|
};
|
|
vAPI.browserAction.setBadgeBackgroundColor = async function() {
|
|
try {
|
|
await webext.browserAction.setBadgeBackgroundColor(...arguments);
|
|
}
|
|
catch (reason) {
|
|
}
|
|
};
|
|
vAPI.browserAction.setBadgeText = async function() {
|
|
try {
|
|
await webext.browserAction.setBadgeText(...arguments);
|
|
}
|
|
catch (reason) {
|
|
}
|
|
};
|
|
vAPI.browserAction.setIcon = async function() {
|
|
try {
|
|
await webext.browserAction.setIcon(...arguments);
|
|
}
|
|
catch (reason) {
|
|
}
|
|
};
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// 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 = (( ) => {
|
|
const browserAction = vAPI.browserAction;
|
|
const titleTemplate =
|
|
browser.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' } },
|
|
];
|
|
|
|
(( ) => {
|
|
if ( browserAction.setIcon === undefined ) { return; }
|
|
|
|
// The global badge text and background color.
|
|
if ( browserAction.setBadgeBackgroundColor !== undefined ) {
|
|
browserAction.setBadgeBackgroundColor({ color: '#666666' });
|
|
}
|
|
if ( browserAction.setBadgeTextColor !== undefined ) {
|
|
browserAction.setBadgeTextColor({ color: '#FFFFFF' });
|
|
}
|
|
|
|
// 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++ ) {
|
|
const 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; }
|
|
}
|
|
const ctx = document.createElement('canvas').getContext('2d');
|
|
const iconData = [ null, null ];
|
|
for ( const img of imgs ) {
|
|
const 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];
|
|
}
|
|
})();
|
|
|
|
// parts: bit 0 = icon
|
|
// bit 1 = badge text
|
|
// bit 2 = badge color
|
|
// bit 3 = hide badge
|
|
|
|
return async function(tabId, details) {
|
|
tabId = toTabId(tabId);
|
|
if ( tabId === 0 ) { return; }
|
|
|
|
const tab = await vAPI.tabs.get(tabId);
|
|
if ( tab === null ) { return; }
|
|
|
|
const { parts, state, badge, color } = details;
|
|
|
|
if ( browserAction.setIcon !== undefined ) {
|
|
if ( parts === undefined || (parts & 0b0001) !== 0 ) {
|
|
browserAction.setIcon(
|
|
Object.assign({ tabId: tab.id }, icons[state])
|
|
);
|
|
}
|
|
if ( (parts & 0b0010) !== 0 ) {
|
|
browserAction.setBadgeText({
|
|
tabId: tab.id,
|
|
text: (parts & 0b1000) === 0 ? badge : ''
|
|
});
|
|
}
|
|
if ( (parts & 0b0100) !== 0 ) {
|
|
browserAction.setBadgeBackgroundColor({ tabId: tab.id, color });
|
|
}
|
|
}
|
|
|
|
// Insert the badge text in the title if:
|
|
// - the platform does not support browserAction.setIcon(); OR
|
|
// - the rendering of the badge is disabled
|
|
if (
|
|
browserAction.setTitle !== undefined && (
|
|
browserAction.setIcon === undefined || (parts & 0b1000) !== 0
|
|
)
|
|
) {
|
|
browserAction.setTitle({
|
|
tabId: tab.id,
|
|
title: titleTemplate.replace(
|
|
'{badge}',
|
|
state === 1 ? (badge !== '' ? badge : '0') : 'off'
|
|
)
|
|
});
|
|
}
|
|
|
|
if ( vAPI.contextMenu instanceof Object ) {
|
|
vAPI.contextMenu.onMustUpdate(tabId);
|
|
}
|
|
};
|
|
})();
|
|
|
|
browser.browserAction.onClicked.addListener(function(tab) {
|
|
vAPI.tabs.open({
|
|
select: true,
|
|
url: 'popup.html?tabId=' + tab.id + '&responsive=1'
|
|
});
|
|
});
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// https://github.com/uBlockOrigin/uBlock-issues/issues/710
|
|
// uBO uses only ports to communicate with its auxiliary pages and
|
|
// content scripts. Whether a message can trigger a privileged operation is
|
|
// decided based on whether the port from which a message is received is
|
|
// privileged, which is a status evaluated once, at port connection time.
|
|
|
|
vAPI.messaging = {
|
|
ports: new Map(),
|
|
listeners: new Map(),
|
|
defaultHandler: null,
|
|
PRIVILEGED_URL: vAPI.getURL(''),
|
|
NOOPFUNC: function(){},
|
|
UNHANDLED: 'vAPI.messaging.notHandled',
|
|
|
|
listen: function(details) {
|
|
this.listeners.set(details.name, {
|
|
fn: details.listener,
|
|
privileged: details.privileged === true
|
|
});
|
|
},
|
|
|
|
onPortDisconnect: function(port) {
|
|
this.ports.delete(port.name);
|
|
},
|
|
|
|
// https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/runtime/Port
|
|
// port.sender is always present for onConnect() listeners.
|
|
onPortConnect: function(port) {
|
|
port.onDisconnect.addListener(port =>
|
|
this.onPortDisconnect(port)
|
|
);
|
|
port.onMessage.addListener((request, port) =>
|
|
this.onPortMessage(request, port)
|
|
);
|
|
const portDetails = { port };
|
|
const sender = port.sender;
|
|
const { tab, url } = sender;
|
|
portDetails.frameId = sender.frameId;
|
|
portDetails.frameURL = url;
|
|
portDetails.privileged = url.startsWith(this.PRIVILEGED_URL);
|
|
if ( tab ) {
|
|
portDetails.tabId = tab.id;
|
|
portDetails.tabURL = tab.url;
|
|
}
|
|
this.ports.set(port.name, portDetails);
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=1652925#c24
|
|
port.sender = undefined;
|
|
},
|
|
|
|
setup: function(defaultHandler) {
|
|
if ( this.defaultHandler !== null ) { return; }
|
|
|
|
if ( typeof defaultHandler !== 'function' ) {
|
|
defaultHandler = function() {
|
|
return this.UNHANDLED;
|
|
};
|
|
}
|
|
this.defaultHandler = defaultHandler;
|
|
|
|
browser.runtime.onConnect.addListener(
|
|
port => this.onPortConnect(port)
|
|
);
|
|
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=1392067
|
|
// Workaround: manually remove ports matching removed tab.
|
|
if (
|
|
vAPI.webextFlavor.soup.has('firefox') &&
|
|
vAPI.webextFlavor.major < 61
|
|
) {
|
|
browser.tabs.onRemoved.addListener(tabId => {
|
|
for ( const { port, tabId: portTabId } of this.ports.values() ) {
|
|
if ( portTabId !== tabId ) { continue; }
|
|
this.onPortDisconnect(port);
|
|
}
|
|
});
|
|
}
|
|
},
|
|
|
|
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);
|
|
}
|
|
}
|
|
},
|
|
|
|
onFrameworkMessage: function(request, port, callback) {
|
|
const portDetails = this.ports.get(port.name) || {};
|
|
const tabId = portDetails.tabId;
|
|
const msg = request.msg;
|
|
switch ( msg.what ) {
|
|
case 'connectionAccepted':
|
|
case 'connectionRefused': {
|
|
const toPort = this.ports.get(msg.fromToken);
|
|
if ( toPort !== undefined ) {
|
|
msg.tabId = tabId;
|
|
toPort.port.postMessage(request);
|
|
} else {
|
|
msg.what = 'connectionBroken';
|
|
port.postMessage(request);
|
|
}
|
|
break;
|
|
}
|
|
case 'connectionRequested':
|
|
msg.tabId = tabId;
|
|
for ( const { port: toPort } of this.ports.values() ) {
|
|
if ( toPort === port ) { continue; }
|
|
toPort.postMessage(request);
|
|
}
|
|
break;
|
|
case 'connectionBroken':
|
|
case 'connectionCheck':
|
|
case 'connectionMessage': {
|
|
const toPort = this.ports.get(
|
|
port.name === msg.fromToken ? msg.toToken : msg.fromToken
|
|
);
|
|
if ( toPort !== undefined ) {
|
|
msg.tabId = tabId;
|
|
toPort.port.postMessage(request);
|
|
} else {
|
|
msg.what = 'connectionBroken';
|
|
port.postMessage(request);
|
|
}
|
|
break;
|
|
}
|
|
case 'extendClient':
|
|
vAPI.tabs.executeScript(tabId, {
|
|
file: '/js/vapi-client-extra.js',
|
|
}).then(( ) => {
|
|
callback();
|
|
});
|
|
break;
|
|
case 'localStorage': {
|
|
if ( portDetails.privileged !== true ) { break; }
|
|
const args = msg.args || [];
|
|
vAPI.localStorage[msg.fn](...args).then(result => {
|
|
callback(result);
|
|
});
|
|
break;
|
|
}
|
|
case 'userCSS':
|
|
if ( tabId === undefined ) { break; }
|
|
const details = {
|
|
code: undefined,
|
|
frameId: portDetails.frameId,
|
|
matchAboutBlank: true
|
|
};
|
|
if ( msg.add ) {
|
|
details.runAt = 'document_start';
|
|
}
|
|
const promises = [];
|
|
for ( const cssText of msg.add ) {
|
|
details.code = cssText;
|
|
promises.push(vAPI.tabs.insertCSS(tabId, details));
|
|
}
|
|
for ( const cssText of msg.remove ) {
|
|
details.code = cssText;
|
|
promises.push(vAPI.tabs.removeCSS(tabId, details));
|
|
}
|
|
Promise.all(promises).then(( ) => {
|
|
callback();
|
|
});
|
|
break;
|
|
}
|
|
},
|
|
|
|
// Use a wrapper to avoid closure and to allow reuse.
|
|
CallbackWrapper: class {
|
|
constructor(messaging, port, msgId) {
|
|
this.messaging = messaging;
|
|
this.callback = this.proxy.bind(this); // bind once
|
|
this.init(port, msgId);
|
|
}
|
|
init(port, msgId) {
|
|
this.port = port;
|
|
this.msgId = msgId;
|
|
return this;
|
|
}
|
|
proxy(response) {
|
|
// https://github.com/chrisaljoudi/uBlock/issues/383
|
|
if ( this.messaging.ports.has(this.port.name) ) {
|
|
this.port.postMessage({
|
|
msgId: this.msgId,
|
|
msg: response !== undefined ? response : null,
|
|
});
|
|
}
|
|
// Store for reuse
|
|
this.port = null;
|
|
this.messaging.callbackWrapperJunkyard.push(this);
|
|
}
|
|
},
|
|
|
|
callbackWrapperJunkyard: [],
|
|
|
|
callbackWrapperFactory: function(port, msgId) {
|
|
return this.callbackWrapperJunkyard.length !== 0
|
|
? this.callbackWrapperJunkyard.pop().init(port, msgId)
|
|
: new this.CallbackWrapper(this, port, msgId);
|
|
},
|
|
|
|
onPortMessage: function(request, port) {
|
|
// prepare response
|
|
let callback = this.NOOPFUNC;
|
|
if ( request.msgId !== undefined ) {
|
|
callback = this.callbackWrapperFactory(port, request.msgId).callback;
|
|
}
|
|
|
|
// Content process to main process: framework handler.
|
|
if ( request.channel === 'vapi' ) {
|
|
this.onFrameworkMessage(request, port, callback);
|
|
return;
|
|
}
|
|
|
|
// Auxiliary process to main process: specific handler
|
|
const portDetails = this.ports.get(port.name);
|
|
if ( portDetails === undefined ) { return; }
|
|
|
|
const listenerDetails = this.listeners.get(request.channel);
|
|
let r = this.UNHANDLED;
|
|
if (
|
|
(listenerDetails !== undefined) &&
|
|
(listenerDetails.privileged === false || portDetails.privileged)
|
|
|
|
) {
|
|
r = listenerDetails.fn(request.msg, portDetails, callback);
|
|
}
|
|
if ( r !== this.UNHANDLED ) { return; }
|
|
|
|
// Auxiliary process to main process: default handler
|
|
if ( portDetails.privileged ) {
|
|
r = this.defaultHandler(request.msg, portDetails, callback);
|
|
if ( r !== this.UNHANDLED ) { return; }
|
|
}
|
|
|
|
// Auxiliary process to main process: no handler
|
|
log.info(
|
|
`vAPI.messaging.onPortMessage > unhandled request: ${JSON.stringify(request.msg)}`,
|
|
request
|
|
);
|
|
|
|
// Need to callback anyways in case caller expected an answer, or
|
|
// else there is a memory leak on caller's side
|
|
callback();
|
|
},
|
|
};
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// https://github.com/gorhill/uBlock/issues/3474
|
|
// https://github.com/gorhill/uBlock/issues/2823
|
|
// Foil ability of web pages to identify uBO through
|
|
// its web accessible resources.
|
|
// https://github.com/gorhill/uBlock/issues/3497
|
|
// Prevent web pages from interfering with uBO's element picker
|
|
// https://github.com/uBlockOrigin/uBlock-issues/issues/550
|
|
// Support using a new secret for every network request.
|
|
|
|
vAPI.warSecret = (( ) => {
|
|
const generateSecret = ( ) => {
|
|
return Math.floor(Math.random() * 982451653 + 982451653).toString(36);
|
|
};
|
|
|
|
const root = vAPI.getURL('/');
|
|
const secrets = [];
|
|
let lastSecretTime = 0;
|
|
|
|
const guard = function(details) {
|
|
const url = details.url;
|
|
const pos = secrets.findIndex(secret =>
|
|
url.lastIndexOf(`?secret=${secret}`) !== -1
|
|
);
|
|
if ( pos === -1 ) {
|
|
return { cancel: true };
|
|
}
|
|
secrets.splice(pos, 1);
|
|
};
|
|
|
|
browser.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;
|
|
};
|
|
})();
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.Net = class {
|
|
constructor() {
|
|
this.validTypes = new Set();
|
|
{
|
|
const wrrt = browser.webRequest.ResourceType;
|
|
for ( const typeKey in wrrt ) {
|
|
if ( wrrt.hasOwnProperty(typeKey) ) {
|
|
this.validTypes.add(wrrt[typeKey]);
|
|
}
|
|
}
|
|
}
|
|
this.suspendableListener = undefined;
|
|
this.listenerMap = new WeakMap();
|
|
this.suspendDepth = 0;
|
|
|
|
browser.webRequest.onBeforeRequest.addListener(
|
|
details => {
|
|
this.normalizeDetails(details);
|
|
if ( this.suspendDepth !== 0 && details.tabId >= 0 ) {
|
|
return this.suspendOneRequest(details);
|
|
}
|
|
return this.onBeforeSuspendableRequest(details);
|
|
},
|
|
this.denormalizeFilters({ urls: [ 'http://*/*', 'https://*/*' ] }),
|
|
[ 'blocking' ]
|
|
);
|
|
}
|
|
setOptions(/* options */) {
|
|
}
|
|
normalizeDetails(/* details */) {
|
|
}
|
|
denormalizeFilters(filters) {
|
|
const urls = filters.urls || [ '<all_urls>' ];
|
|
let types = filters.types;
|
|
if ( Array.isArray(types) ) {
|
|
types = this.denormalizeTypes(types);
|
|
}
|
|
if (
|
|
(this.validTypes.has('websocket')) &&
|
|
(types === undefined || types.indexOf('websocket') !== -1) &&
|
|
(urls.indexOf('<all_urls>') === -1)
|
|
) {
|
|
if ( urls.indexOf('ws://*/*') === -1 ) {
|
|
urls.push('ws://*/*');
|
|
}
|
|
if ( urls.indexOf('wss://*/*') === -1 ) {
|
|
urls.push('wss://*/*');
|
|
}
|
|
}
|
|
return { types, urls };
|
|
}
|
|
denormalizeTypes(types) {
|
|
return types;
|
|
}
|
|
canonicalNameFromHostname(/* hn */) {
|
|
}
|
|
addListener(which, clientListener, filters, options) {
|
|
const actualFilters = this.denormalizeFilters(filters);
|
|
const actualListener = this.makeNewListenerProxy(clientListener);
|
|
browser.webRequest[which].addListener(
|
|
actualListener,
|
|
actualFilters,
|
|
options
|
|
);
|
|
}
|
|
onBeforeSuspendableRequest(details) {
|
|
if ( this.suspendableListener === undefined ) { return; }
|
|
return this.suspendableListener(details);
|
|
}
|
|
setSuspendableListener(listener) {
|
|
this.suspendableListener = listener;
|
|
}
|
|
removeListener(which, clientListener) {
|
|
const actualListener = this.listenerMap.get(clientListener);
|
|
if ( actualListener === undefined ) { return; }
|
|
this.listenerMap.delete(clientListener);
|
|
browser.webRequest[which].removeListener(actualListener);
|
|
}
|
|
makeNewListenerProxy(clientListener) {
|
|
const actualListener = details => {
|
|
this.normalizeDetails(details);
|
|
return clientListener(details);
|
|
};
|
|
this.listenerMap.set(clientListener, actualListener);
|
|
return actualListener;
|
|
}
|
|
suspendOneRequest() {
|
|
}
|
|
unsuspendAllRequests() {
|
|
}
|
|
suspend(force = false) {
|
|
if ( this.canSuspend() || force ) {
|
|
this.suspendDepth += 1;
|
|
}
|
|
}
|
|
unsuspend(all = false) {
|
|
if ( this.suspendDepth === 0 ) { return; }
|
|
if ( all ) {
|
|
this.suspendDepth = 0;
|
|
} else {
|
|
this.suspendDepth -= 1;
|
|
}
|
|
if ( this.suspendDepth !== 0 ) { return; }
|
|
this.unsuspendAllRequests();
|
|
}
|
|
canSuspend() {
|
|
return false;
|
|
}
|
|
async benchmark() {
|
|
if ( typeof µBlock !== 'object' ) { return; }
|
|
const requests = await µBlock.loadBenchmarkDataset();
|
|
if ( Array.isArray(requests) === false || requests.length === 0 ) {
|
|
console.info('No requests found to benchmark');
|
|
return;
|
|
}
|
|
const mappedTypes = new Map([
|
|
[ 'document', 'main_frame' ],
|
|
[ 'subdocument', 'sub_frame' ],
|
|
]);
|
|
console.info('vAPI.net.onBeforeSuspendableRequest()...');
|
|
const t0 = self.performance.now();
|
|
const promises = [];
|
|
const details = {
|
|
documentUrl: '',
|
|
tabId: -1,
|
|
parentFrameId: -1,
|
|
frameId: 0,
|
|
type: '',
|
|
url: '',
|
|
};
|
|
for ( const request of requests ) {
|
|
details.documentUrl = request.frameUrl;
|
|
details.tabId = -1;
|
|
details.parentFrameId = -1;
|
|
details.frameId = 0;
|
|
details.type = mappedTypes.get(request.cpt) || request.cpt;
|
|
details.url = request.url;
|
|
if ( details.type === 'main_frame' ) { continue; }
|
|
promises.push(this.onBeforeSuspendableRequest(details));
|
|
}
|
|
return Promise.all(promises).then(results => {
|
|
let blockCount = 0;
|
|
for ( const r of results ) {
|
|
if ( r !== undefined ) { blockCount += 1; }
|
|
}
|
|
const t1 = self.performance.now();
|
|
const dur = t1 - t0;
|
|
console.info(`Evaluated ${requests.length} requests in ${dur.toFixed(0)} ms`);
|
|
console.info(`\tBlocked ${blockCount} requests`);
|
|
console.info(`\tAverage: ${(dur / requests.length).toFixed(3)} ms per request`);
|
|
});
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/contextMenus#Browser_compatibility
|
|
// Firefox for Android does no support browser.contextMenus.
|
|
|
|
vAPI.contextMenu = webext.menus && {
|
|
_callback: null,
|
|
_entries: [],
|
|
_createEntry: function(entry) {
|
|
webext.menus.create(JSON.parse(JSON.stringify(entry)));
|
|
},
|
|
onMustUpdate: function() {},
|
|
setEntries: function(entries, callback) {
|
|
entries = entries || [];
|
|
let n = Math.max(this._entries.length, entries.length);
|
|
for ( let i = 0; i < n; i++ ) {
|
|
const oldEntryId = this._entries[i];
|
|
const newEntry = entries[i];
|
|
if ( oldEntryId && newEntry ) {
|
|
if ( newEntry.id !== oldEntryId ) {
|
|
webext.menus.remove(oldEntryId);
|
|
this._createEntry(newEntry);
|
|
this._entries[i] = newEntry.id;
|
|
}
|
|
} else if ( oldEntryId && !newEntry ) {
|
|
webext.menus.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 ) {
|
|
webext.menus.onClicked.addListener(callback);
|
|
this._callback = callback;
|
|
} else if ( n === 0 && this._callback !== null ) {
|
|
webext.menus.onClicked.removeListener(this._callback);
|
|
this._callback = null;
|
|
}
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
vAPI.commands = browser.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 = (( ) => {
|
|
if ( webext.storage.managed instanceof Object === false ) {
|
|
return {
|
|
getItem: function() {
|
|
return Promise.resolve();
|
|
},
|
|
};
|
|
}
|
|
return {
|
|
getItem: async function(key) {
|
|
let bin;
|
|
try {
|
|
bin = await webext.storage.managed.get(key);
|
|
} catch(ex) {
|
|
}
|
|
if ( bin instanceof Object ) {
|
|
return bin[key];
|
|
}
|
|
}
|
|
};
|
|
})();
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// A localStorage-like object which should be accessible from the
|
|
// background page or auxiliary pages.
|
|
//
|
|
// https://github.com/uBlockOrigin/uBlock-issues/issues/899
|
|
// Convert into asynchronous access API.
|
|
//
|
|
// Note: vAPI.localStorage should already be defined with the client-side
|
|
// implementation at this point, but we override with the
|
|
// background-side implementation.
|
|
vAPI.localStorage = {
|
|
start: async function() {
|
|
if ( this.cache instanceof Promise ) { return this.cache; }
|
|
if ( this.cache instanceof Object ) { return this.cache; }
|
|
this.cache = webext.storage.local.get('localStorage').then(bin => {
|
|
this.cache = bin instanceof Object &&
|
|
bin.localStorage instanceof Object
|
|
? bin.localStorage
|
|
: {};
|
|
});
|
|
return this.cache;
|
|
},
|
|
clear: function() {
|
|
this.cache = {};
|
|
return webext.storage.local.set({ localStorage: this.cache });
|
|
},
|
|
getItem: function(key) {
|
|
if ( this.cache instanceof Object === false ) {
|
|
console.info(`localStorage.getItem('${key}') not ready`);
|
|
return null;
|
|
}
|
|
const value = this.cache[key];
|
|
return value !== undefined ? value : null;
|
|
},
|
|
getItemAsync: async function(key) {
|
|
await this.start();
|
|
const value = this.cache[key];
|
|
return value !== undefined ? value : null;
|
|
},
|
|
removeItem: async function(key) {
|
|
this.setItem(key);
|
|
},
|
|
setItem: async function(key, value = undefined) {
|
|
await this.start();
|
|
if ( value === this.cache[key] ) { return; }
|
|
this.cache[key] = value;
|
|
return webext.storage.local.set({ localStorage: this.cache });
|
|
},
|
|
cache: undefined,
|
|
};
|
|
|
|
vAPI.localStorage.start();
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage/sync
|
|
|
|
vAPI.cloud = (( ) => {
|
|
// Not all platforms support `webext.storage.sync`.
|
|
if ( webext.storage.sync instanceof Object === false ) { return; }
|
|
|
|
// Currently, only Chromium supports the following constants -- these
|
|
// values will be assumed for platforms which do not define them.
|
|
// https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/storage/sync
|
|
// > You can store up to 100KB of data using this API
|
|
const MAX_ITEMS =
|
|
webext.storage.sync.MAX_ITEMS || 512;
|
|
const QUOTA_BYTES =
|
|
webext.storage.sync.QUOTA_BYTES || 102400;
|
|
const QUOTA_BYTES_PER_ITEM =
|
|
webext.storage.sync.QUOTA_BYTES_PER_ITEM || 8192;
|
|
|
|
const chunkCountPerFetch = 16; // Must be a power of 2
|
|
const maxChunkCountPerItem = Math.floor(MAX_ITEMS * 0.75) & ~(chunkCountPerFetch - 1);
|
|
|
|
// 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.
|
|
const evalMaxChunkSize = function() {
|
|
return Math.floor(
|
|
QUOTA_BYTES_PER_ITEM *
|
|
(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 });
|
|
|
|
const options = {
|
|
defaultDeviceName: window.navigator.platform,
|
|
deviceName: undefined,
|
|
};
|
|
|
|
vAPI.localStorage.getItemAsync('deviceName').then(value => {
|
|
options.deviceName = value;
|
|
});
|
|
|
|
// 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.
|
|
|
|
const getCoarseChunkCount = async function(datakey) {
|
|
const keys = {};
|
|
for ( let i = 0; i < maxChunkCountPerItem; i += 16 ) {
|
|
keys[datakey + i.toString()] = '';
|
|
}
|
|
let bin;
|
|
try {
|
|
bin = await webext.storage.sync.get(keys);
|
|
} catch (reason) {
|
|
return reason;
|
|
}
|
|
let chunkCount = 0;
|
|
for ( let i = 0; i < maxChunkCountPerItem; i += 16 ) {
|
|
if ( bin[datakey + i.toString()] === '' ) { break; }
|
|
chunkCount = i + 16;
|
|
}
|
|
return chunkCount;
|
|
};
|
|
|
|
const deleteChunks = async function(datakey, start) {
|
|
const keys = [];
|
|
|
|
const n = await getCoarseChunkCount(datakey);
|
|
for ( let i = start; i < n; i++ ) {
|
|
keys.push(datakey + i.toString());
|
|
}
|
|
if ( keys.length !== 0 ) {
|
|
webext.storage.sync.remove(keys);
|
|
}
|
|
};
|
|
|
|
const push = async function(details) {
|
|
const { datakey, data, encode } = details;
|
|
if (
|
|
data === undefined ||
|
|
typeof data === 'string' && data === ''
|
|
) {
|
|
return deleteChunks(datakey, 0);
|
|
}
|
|
const item = {
|
|
source: options.deviceName || options.defaultDeviceName,
|
|
tstamp: Date.now(),
|
|
data,
|
|
};
|
|
const json = JSON.stringify(item);
|
|
const encoded = encode instanceof Function
|
|
? await encode(json)
|
|
: json;
|
|
|
|
// 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."
|
|
const bin = {};
|
|
const chunkCount = Math.ceil(encoded.length / maxChunkSize);
|
|
for ( let i = 0; i < chunkCount; i++ ) {
|
|
bin[datakey + i.toString()]
|
|
= encoded.substr(i * maxChunkSize, maxChunkSize);
|
|
}
|
|
bin[datakey + chunkCount.toString()] = ''; // Sentinel
|
|
|
|
// Remove potentially unused trailing chunks before storing the data,
|
|
// this will free storage space which could otherwise cause the push
|
|
// operation to fail.
|
|
try {
|
|
await deleteChunks(datakey, chunkCount + 1);
|
|
} catch (reason) {
|
|
}
|
|
|
|
// Push the data to browser-provided cloud storage.
|
|
try {
|
|
await webext.storage.sync.set(bin);
|
|
} catch (reason) {
|
|
return String(reason);
|
|
}
|
|
};
|
|
|
|
const pull = async function(details) {
|
|
const { datakey, decode } = details;
|
|
|
|
const result = await getCoarseChunkCount(datakey);
|
|
if ( typeof result !== 'number' ) {
|
|
return result;
|
|
}
|
|
const chunkKeys = {};
|
|
for ( let i = 0; i < result; i++ ) {
|
|
chunkKeys[datakey + i.toString()] = '';
|
|
}
|
|
|
|
let bin;
|
|
try {
|
|
bin = await webext.storage.sync.get(chunkKeys);
|
|
} catch (reason) {
|
|
return String(reason);
|
|
}
|
|
|
|
// 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 encoded = [];
|
|
let i = 0;
|
|
for (;;) {
|
|
const slice = bin[datakey + i.toString()];
|
|
if ( slice === '' || slice === undefined ) { break; }
|
|
encoded.push(slice);
|
|
i += 1;
|
|
}
|
|
encoded = encoded.join('');
|
|
const json = decode instanceof Function
|
|
? await decode(encoded)
|
|
: encoded;
|
|
let entry = null;
|
|
try {
|
|
entry = JSON.parse(json);
|
|
} catch(ex) {
|
|
}
|
|
return entry;
|
|
};
|
|
|
|
const used = async function(datakey) {
|
|
if ( webext.storage.sync.getBytesInUse instanceof Function === false ) {
|
|
return;
|
|
}
|
|
const coarseCount = await getCoarseChunkCount(datakey);
|
|
if ( typeof coarseCount !== 'number' ) { return; }
|
|
const keys = [];
|
|
for ( let i = 0; i < coarseCount; i++ ) {
|
|
keys.push(`${datakey}${i}`);
|
|
}
|
|
let results;
|
|
try {
|
|
results = await Promise.all([
|
|
webext.storage.sync.getBytesInUse(keys),
|
|
webext.storage.sync.getBytesInUse(null),
|
|
]);
|
|
} catch(ex) {
|
|
}
|
|
if ( Array.isArray(results) === false ) { return; }
|
|
return { used: results[0], total: results[1], max: QUOTA_BYTES };
|
|
};
|
|
|
|
const getOptions = function(callback) {
|
|
if ( typeof callback !== 'function' ) { return; }
|
|
callback(options);
|
|
};
|
|
|
|
const 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 { push, pull, used, getOptions, setOptions };
|
|
})();
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// <<<<< end of local scope
|
|
}
|
|
|
|
/******************************************************************************/
|