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uBlock/platform/firefox/vapi-background.js

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/*******************************************************************************
uBlock Origin - a browser extension to block requests.
Copyright (C) 2014-2106 The uBlock Origin authors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see {http://www.gnu.org/licenses/}.
Home: https://github.com/gorhill/uBlock
*/
/* jshint esnext: true, bitwise: false */
/* global punycode */
// For background page
'use strict';
/******************************************************************************/
(function() {
/******************************************************************************/
const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
const {Services} = Cu.import('resource://gre/modules/Services.jsm', null);
/******************************************************************************/
var vAPI = self.vAPI = self.vAPI || {};
vAPI.firefox = true;
vAPI.fennec = Services.appinfo.ID === '{aa3c5121-dab2-40e2-81ca-7ea25febc110}';
vAPI.thunderbird = Services.appinfo.ID === '{3550f703-e582-4d05-9a08-453d09bdfdc6}';
if ( vAPI.fennec ) {
vAPI.battery = true;
}
/******************************************************************************/
var deferUntil = function(testFn, mainFn, details) {
if ( typeof details !== 'object' ) {
details = {};
}
var now = 0;
var next = details.next || 200;
var until = details.until || 2000;
var check = function() {
if ( testFn() === true || now >= until ) {
mainFn();
return;
}
now += next;
vAPI.setTimeout(check, next);
};
if ( 'sync' in details && details.sync === true ) {
check();
} else {
vAPI.setTimeout(check, 1);
}
};
/******************************************************************************/
vAPI.app = {
name: 'uBlock Origin',
version: location.hash.slice(1)
};
/******************************************************************************/
vAPI.app.restart = function() {
// Listening in bootstrap.js
Cc['@mozilla.org/childprocessmessagemanager;1']
.getService(Ci.nsIMessageSender)
.sendAsyncMessage(location.host + '-restart');
};
/******************************************************************************/
// Set default preferences for user to find in about:config
vAPI.localStorage.setDefaultBool('forceLegacyToolbarButton', false);
/******************************************************************************/
// List of things that needs to be destroyed when disabling the extension
// Only functions should be added to it
var cleanupTasks = [];
// This must be updated manually, every time a new task is added/removed
var expectedNumberOfCleanups = 9;
window.addEventListener('unload', function() {
if ( typeof vAPI.app.onShutdown === 'function' ) {
vAPI.app.onShutdown();
}
// IMPORTANT: cleanup tasks must be executed using LIFO order.
var i = cleanupTasks.length;
while ( i-- ) {
cleanupTasks[i]();
}
if ( cleanupTasks.length < expectedNumberOfCleanups ) {
console.error(
'uBlock> Cleanup tasks performed: %s (out of %s)',
cleanupTasks.length,
expectedNumberOfCleanups
);
}
// frameModule needs to be cleared too
var frameModuleURL = vAPI.getURL('frameModule.js');
var frameModule = {};
// https://github.com/gorhill/uBlock/issues/1004
// For whatever reason, `Cu.import` can throw -- at least this was
// reported as happening for Pale Moon 25.8.
try {
Cu.import(frameModuleURL, frameModule);
frameModule.contentObserver.unregister();
Cu.unload(frameModuleURL);
} catch (ex) {
}
});
/******************************************************************************/
// For now, only booleans.
vAPI.browserSettings = {
originalValues: {},
rememberOriginalValue: function(path, setting) {
var key = path + '.' + setting;
if ( this.originalValues.hasOwnProperty(key) ) {
return;
}
var hasUserValue;
var branch = Services.prefs.getBranch(path + '.');
try {
hasUserValue = branch.prefHasUserValue(setting);
} catch (ex) {
}
if ( hasUserValue !== undefined ) {
this.originalValues[key] = hasUserValue ? this.getValue(path, setting) : undefined;
}
},
clear: function(path, setting) {
var key = path + '.' + setting;
// Value was not overriden -- nothing to restore
if ( this.originalValues.hasOwnProperty(key) === false ) {
return;
}
var value = this.originalValues[key];
// https://github.com/gorhill/uBlock/issues/292#issuecomment-109621979
// Forget the value immediately, it may change outside of
// uBlock control.
delete this.originalValues[key];
// Original value was a default one
if ( value === undefined ) {
try {
Services.prefs.getBranch(path + '.').clearUserPref(setting);
} catch (ex) {
}
return;
}
// Reset to original value
this.setValue(path, setting, value);
},
getValue: function(path, setting) {
var branch = Services.prefs.getBranch(path + '.');
var getMethod;
// https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/nsIPrefBranch#getPrefType%28%29
switch ( branch.getPrefType(setting) ) {
case 64: // PREF_INT
getMethod = 'getIntPref';
break;
case 128: // PREF_BOOL
getMethod = 'getBoolPref';
break;
default: // not supported
return;
}
try {
return branch[getMethod](setting);
} catch (ex) {
}
},
setValue: function(path, setting, value) {
var setMethod;
switch ( typeof value ) {
case 'number':
setMethod = 'setIntPref';
break;
case 'boolean':
setMethod = 'setBoolPref';
break;
default: // not supported
return;
}
try {
Services.prefs.getBranch(path + '.')[setMethod](setting, value);
} catch (ex) {
}
},
set: function(details) {
var settingVal;
var prefName, prefVal;
for ( var setting in details ) {
if ( details.hasOwnProperty(setting) === false ) {
continue;
}
settingVal = !!details[setting];
switch ( setting ) {
case 'prefetching':
this.rememberOriginalValue('network', 'prefetch-next');
// http://betanews.com/2015/08/15/firefox-stealthily-loads-webpages-when-you-hover-over-links-heres-how-to-stop-it/
// https://bugzilla.mozilla.org/show_bug.cgi?id=814169
// Sigh.
this.rememberOriginalValue('network.http', 'speculative-parallel-limit');
this.rememberOriginalValue('network.dns', 'disablePrefetch');
// https://github.com/gorhill/uBlock/issues/292
// "true" means "do not disable", i.e. leave entry alone
if ( settingVal ) {
this.clear('network', 'prefetch-next');
this.clear('network.http', 'speculative-parallel-limit');
this.clear('network.dns', 'disablePrefetch');
} else {
this.setValue('network', 'prefetch-next', false);
this.setValue('network.http', 'speculative-parallel-limit', 0);
this.setValue('network.dns', 'disablePrefetch', true);
}
break;
case 'hyperlinkAuditing':
this.rememberOriginalValue('browser', 'send_pings');
this.rememberOriginalValue('beacon', 'enabled');
// https://github.com/gorhill/uBlock/issues/292
// "true" means "do not disable", i.e. leave entry alone
if ( settingVal ) {
this.clear('browser', 'send_pings');
this.clear('beacon', 'enabled');
} else {
this.setValue('browser', 'send_pings', false);
this.setValue('beacon', 'enabled', false);
}
break;
// https://github.com/gorhill/uBlock/issues/894
// Do not disable completely WebRTC if it can be avoided. FF42+
// has a `media.peerconnection.ice.default_address_only` pref which
// purpose is to prevent local IP address leakage.
case 'webrtcIPAddress':
if ( this.getValue('media.peerconnection', 'ice.default_address_only') !== undefined ) {
prefName = 'ice.default_address_only';
prefVal = true;
} else {
prefName = 'enabled';
prefVal = false;
}
this.rememberOriginalValue('media.peerconnection', prefName);
if ( settingVal ) {
this.clear('media.peerconnection', prefName);
} else {
this.setValue('media.peerconnection', prefName, prefVal);
}
break;
default:
break;
}
}
},
restoreAll: function() {
var pos;
for ( var key in this.originalValues ) {
if ( this.originalValues.hasOwnProperty(key) === false ) {
continue;
}
pos = key.lastIndexOf('.');
this.clear(key.slice(0, pos), key.slice(pos + 1));
}
}
};
cleanupTasks.push(vAPI.browserSettings.restoreAll.bind(vAPI.browserSettings));
/******************************************************************************/
// API matches that of chrome.storage.local:
// https://developer.chrome.com/extensions/storage
vAPI.storage = (function() {
var db = null;
var vacuumTimer = null;
var dbOpenError = '';
var close = function(now) {
if ( vacuumTimer !== null ) {
clearTimeout(vacuumTimer);
vacuumTimer = null;
}
if ( db === null ) {
return;
}
if ( now ) {
db.close();
} else {
db.asyncClose();
}
db = null;
};
var open = function() {
if ( db !== null ) {
return db;
}
// Create path
var path = Services.dirsvc.get('ProfD', Ci.nsIFile);
path.append('extension-data');
if ( !path.exists() ) {
path.create(Ci.nsIFile.DIRECTORY_TYPE, parseInt('0774', 8));
}
if ( !path.isDirectory() ) {
throw Error('Should be a directory...');
}
path.append(location.host + '.sqlite');
// Open database.
// https://github.com/gorhill/uBlock/issues/1768
// If the SQL file is found to be corrupted at launch time, nuke
// existing SQL file so that a new one can be created.
try {
db = Services.storage.openDatabase(path);
if ( db.connectionReady === false ) {
db.asyncClose();
db = null;
}
} catch (ex) {
if ( dbOpenError === '' ) {
console.error('vAPI.storage/open() error: ', ex.message);
dbOpenError = ex.name;
if ( ex.name === 'NS_ERROR_FILE_CORRUPTED' ) {
nuke();
}
}
}
if ( db === null ) {
return null;
}
// Since database could be opened successfully, reset error flag (its
// purpose is to avoid spamming console with error messages).
dbOpenError = '';
// Database was opened, register cleanup task
cleanupTasks.push(close);
// Setup database
db.createAsyncStatement('CREATE TABLE IF NOT EXISTS "settings" ("name" TEXT PRIMARY KEY NOT NULL, "value" TEXT);')
.executeAsync();
if ( vacuum !== null ) {
vacuumTimer = vAPI.setTimeout(vacuum, 60000);
}
return db;
};
var nuke = function() {
var removeDB = function() {
close(true);
var path = Services.dirsvc.get('ProfD', Ci.nsIFile);
path.append('extension-data');
if ( !path.exists() || !path.isDirectory() ) {
return;
}
path.append(location.host + '.sqlite');
if ( path.exists() ) {
path.remove(false);
}
};
vAPI.setTimeout(removeDB, 1);
};
// https://developer.mozilla.org/en-US/docs/Storage/Performance#Vacuuming_and_zero-fill
// Vacuum only once, and only while idle
var vacuum = function() {
vacuumTimer = null;
if ( db === null ) {
return;
}
var idleSvc = Cc['@mozilla.org/widget/idleservice;1']
.getService(Ci.nsIIdleService);
if ( idleSvc.idleTime < 60000 ) {
vacuumTimer = vAPI.setTimeout(vacuum, 60000);
return;
}
db.createAsyncStatement('VACUUM').executeAsync();
vacuum = null;
};
// Execute a query
var runStatement = function(stmt, callback) {
var result = {};
stmt.executeAsync({
handleResult: function(rows) {
if ( !rows || typeof callback !== 'function' ) {
return;
}
var row;
while ( (row = rows.getNextRow()) ) {
// we assume that there will be two columns, since we're
// using it only for preferences
result[row.getResultByIndex(0)] = row.getResultByIndex(1);
}
},
handleCompletion: function(reason) {
if ( typeof callback === 'function' && reason === 0 ) {
callback(result);
}
result = null;
},
handleError: function(error) {
console.error('SQLite error ', error.result, error.message);
// Caller expects an answer regardless of failure.
if ( typeof callback === 'function' ) {
callback({});
}
result = null;
// https://github.com/gorhill/uBlock/issues/1768
// Error cases which warrant a removal of the SQL file, so far:
// - SQLLite error 11 database disk image is malformed
// Can't find doc on MDN about the type of error.result, so I
// force a string comparison.
if ( error.result.toString() === '11' ) {
nuke();
}
}
});
};
var bindNames = function(stmt, names) {
if ( Array.isArray(names) === false || names.length === 0 ) {
return;
}
var params = stmt.newBindingParamsArray();
var i = names.length, bp;
while ( i-- ) {
bp = params.newBindingParams();
bp.bindByName('name', names[i]);
params.addParams(bp);
}
stmt.bindParameters(params);
};
var clear = function(callback) {
if ( open() === null ) {
if ( typeof callback === 'function' ) {
callback();
}
return;
}
runStatement(db.createAsyncStatement('DELETE FROM "settings";'), callback);
};
var getBytesInUse = function(keys, callback) {
if ( typeof callback !== 'function' ) {
return;
}
if ( open() === null ) {
callback(0);
return;
}
var stmt;
if ( Array.isArray(keys) ) {
stmt = db.createAsyncStatement('SELECT "size" AS "size", SUM(LENGTH("value")) FROM "settings" WHERE "name" = :name');
bindNames(keys);
} else {
stmt = db.createAsyncStatement('SELECT "size" AS "size", SUM(LENGTH("value")) FROM "settings"');
}
runStatement(stmt, function(result) {
callback(result.size || 0);
});
};
var read = function(details, callback) {
if ( typeof callback !== 'function' ) {
return;
}
var prepareResult = function(result) {
var key;
for ( key in result ) {
if ( result.hasOwnProperty(key) === false ) {
continue;
}
result[key] = JSON.parse(result[key]);
}
if ( typeof details === 'object' && details !== null ) {
for ( key in details ) {
if ( result.hasOwnProperty(key) === false ) {
result[key] = details[key];
}
}
}
callback(result);
};
if ( open() === null ) {
prepareResult({});
return;
}
var names = [];
if ( details !== null ) {
if ( Array.isArray(details) ) {
names = details;
} else if ( typeof details === 'object' ) {
names = Object.keys(details);
} else {
names = [details.toString()];
}
}
var stmt;
if ( names.length === 0 ) {
stmt = db.createAsyncStatement('SELECT * FROM "settings"');
} else {
stmt = db.createAsyncStatement('SELECT * FROM "settings" WHERE "name" = :name');
bindNames(stmt, names);
}
runStatement(stmt, prepareResult);
};
var remove = function(keys, callback) {
if ( open() === null ) {
if ( typeof callback === 'function' ) {
callback();
}
return;
}
var stmt = db.createAsyncStatement('DELETE FROM "settings" WHERE "name" = :name');
bindNames(stmt, typeof keys === 'string' ? [keys] : keys);
runStatement(stmt, callback);
};
var write = function(details, callback) {
if ( open() === null ) {
if ( typeof callback === 'function' ) {
callback();
}
return;
}
var stmt = db.createAsyncStatement('INSERT OR REPLACE INTO "settings" ("name", "value") VALUES(:name, :value)');
var params = stmt.newBindingParamsArray(), bp;
for ( var key in details ) {
if ( details.hasOwnProperty(key) === false ) {
continue;
}
bp = params.newBindingParams();
bp.bindByName('name', key);
bp.bindByName('value', JSON.stringify(details[key]));
params.addParams(bp);
}
if ( params.length === 0 ) {
return;
}
stmt.bindParameters(params);
runStatement(stmt, callback);
};
// Export API
var api = {
QUOTA_BYTES: 100 * 1024 * 1024,
clear: clear,
get: read,
getBytesInUse: getBytesInUse,
remove: remove,
set: write
};
return api;
})();
/******************************************************************************/
// This must be executed/setup early.
var winWatcher = (function() {
var windowToIdMap = new Map();
var windowIdGenerator = 1;
var api = {
onOpenWindow: null,
onCloseWindow: null
};
// https://github.com/gorhill/uMatrix/issues/586
// This is necessary hack because on SeaMonkey 2.40, for unknown reasons
// private windows do not have the attribute `windowtype` set to
// `navigator:browser`. As a fallback, the code here will also test whether
// the id attribute is `main-window`.
api.toBrowserWindow = function(win) {
var docElement = win && win.document && win.document.documentElement;
if ( !docElement ) {
return null;
}
if ( vAPI.thunderbird ) {
return docElement.getAttribute('windowtype') === 'mail:3pane' ? win : null;
}
return docElement.getAttribute('windowtype') === 'navigator:browser' ||
docElement.getAttribute('id') === 'main-window' ?
win : null;
};
api.getWindows = function() {
return windowToIdMap.keys();
};
api.idFromWindow = function(win) {
return windowToIdMap.get(win) || 0;
};
api.getCurrentWindow = function() {
return this.toBrowserWindow(Services.wm.getMostRecentWindow(null));
};
var addWindow = function(win) {
if ( !win || windowToIdMap.has(win) ) {
return;
}
windowToIdMap.set(win, windowIdGenerator++);
if ( typeof api.onOpenWindow === 'function' ) {
api.onOpenWindow(win);
}
};
var removeWindow = function(win) {
if ( !win || windowToIdMap.delete(win) !== true ) {
return;
}
if ( typeof api.onCloseWindow === 'function' ) {
api.onCloseWindow(win);
}
};
// https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/nsIWindowMediator
// https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/nsIWindowWatcher
// https://github.com/gorhill/uMatrix/issues/357
// Use nsIWindowMediator for being notified of opened/closed windows.
var listeners = {
onOpenWindow: function(aWindow) {
var win;
try {
win = aWindow.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindow);
} catch (ex) {
}
addWindow(win);
},
onCloseWindow: function(aWindow) {
var win;
try {
win = aWindow.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindow);
} catch (ex) {
}
removeWindow(win);
},
observe: function(aSubject, topic) {
// https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/nsIWindowWatcher#registerNotification%28%29
// "aSubject - the window being opened or closed, sent as an
// "nsISupports which can be ... QueryInterfaced to an
// "nsIDOMWindow."
var win;
try {
win = aSubject.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindow);
} catch (ex) {
}
if ( !win ) { return; }
if ( topic === 'domwindowopened' ) {
addWindow(win);
return;
}
if ( topic === 'domwindowclosed' ) {
removeWindow(win);
return;
}
}
};
(function() {
var winumerator, win;
// https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/nsIWindowMediator#getEnumerator%28%29
winumerator = Services.wm.getEnumerator(null);
while ( winumerator.hasMoreElements() ) {
win = winumerator.getNext();
if ( !win.closed ) {
windowToIdMap.set(win, windowIdGenerator++);
}
}
// https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/nsIWindowWatcher#getWindowEnumerator%28%29
winumerator = Services.ww.getWindowEnumerator();
while ( winumerator.hasMoreElements() ) {
win = winumerator.getNext()
.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindow);
if ( !win.closed ) {
windowToIdMap.set(win, windowIdGenerator++);
}
}
Services.wm.addListener(listeners);
Services.ww.registerNotification(listeners);
})();
cleanupTasks.push(function() {
Services.wm.removeListener(listeners);
Services.ww.unregisterNotification(listeners);
windowToIdMap.clear();
});
return api;
})();
/******************************************************************************/
var getTabBrowser = (function() {
if ( vAPI.fennec ) {
return function(win) {
return win.BrowserApp || null;
};
}
if ( vAPI.thunderbird ) {
return function(win) {
return win.document.getElementById('tabmail') || null;
};
}
// https://github.com/gorhill/uBlock/issues/1004
// Merely READING the `gBrowser` property causes the issue -- no
// need to even use its returned value... This really should be fixed
// in the browser.
// Meanwhile, the workaround is to check whether the document is
// ready. This is hacky, as the code below has to make assumption
// about the browser's inner working -- specifically that the `gBrowser`
// property should NOT be accessed before the document of the window is
// in its ready state.
return function(win) {
if ( win ) {
var doc = win.document;
if ( doc && doc.readyState === 'complete' ) {
return win.gBrowser || null;
}
}
return null;
};
})();
/******************************************************************************/
var getOwnerWindow = function(target) {
if ( target.ownerDocument ) {
return target.ownerDocument.defaultView;
}
// Fennec
for ( var win of winWatcher.getWindows() ) {
for ( var tab of win.BrowserApp.tabs) {
if ( tab === target || tab.window === target ) {
return win;
}
}
}
return null;
};
/******************************************************************************/
vAPI.isBehindTheSceneTabId = function(tabId) {
return tabId.toString() === '-1';
};
vAPI.noTabId = '-1';
/******************************************************************************/
vAPI.tabs = {};
/******************************************************************************/
vAPI.tabs.registerListeners = function() {
tabWatcher.start();
};
/******************************************************************************/
// Firefox:
// https://developer.mozilla.org/en-US/Add-ons/Code_snippets/Tabbed_browser
//
// browser --> ownerDocument --> defaultView --> gBrowser --> browsers --+
// ^ |
// | |
// +-------------------------------------------------------------------
//
// browser (browser)
// contentTitle
// currentURI
// ownerDocument (XULDocument)
// defaultView (ChromeWindow)
// gBrowser (tabbrowser OR browser)
// browsers (browser)
// selectedBrowser
// selectedTab
// tabs (tab.tabbrowser-tab)
//
// Fennec: (what I figured so far)
//
// tab --> browser windows --> window --> BrowserApp --> tabs --+
// ^ window |
// | |
// +---------------------------------------------------------------+
//
// tab
// browser
// [manual search to go back to tab from list of windows]
vAPI.tabs.get = function(tabId, callback) {
var browser;
if ( tabId === null ) {
browser = tabWatcher.currentBrowser();
tabId = tabWatcher.tabIdFromTarget(browser);
} else {
browser = tabWatcher.browserFromTabId(tabId);
}
// For internal use
if ( typeof callback !== 'function' ) {
return browser;
}
if ( !browser || !browser.currentURI ) {
callback();
return;
}
var win = getOwnerWindow(browser);
var tabBrowser = getTabBrowser(win);
// https://github.com/gorhill/uMatrix/issues/540
// The `index` property is nowhere used by uBlock at this point, so we
// will refrain from returning this information for the time being.
callback({
id: tabId,
index: undefined,
windowId: winWatcher.idFromWindow(win),
active: tabBrowser !== null && browser === tabBrowser.selectedBrowser,
url: browser.currentURI.asciiSpec,
title: browser.contentTitle
});
};
/******************************************************************************/
vAPI.tabs.getAll = function(window) {
var win, tab;
var tabs = [];
for ( win of winWatcher.getWindows() ) {
if ( window && window !== win ) {
continue;
}
var tabBrowser = getTabBrowser(win);
if ( tabBrowser === null ) {
continue;
}
// This can happens if a tab-less window is currently opened.
// Example of a tab-less window: one opened from clicking
// "View Page Source".
if ( !tabBrowser.tabs ) {
continue;
}
for ( tab of tabBrowser.tabs ) {
tabs.push(tab);
}
}
return tabs;
};
/******************************************************************************/
// properties of the details object:
// url: 'URL', // the address that will be opened
// 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
vAPI.tabs.open = function(details) {
if ( !details.url ) {
return null;
}
// extension pages
if ( /^[\w-]{2,}:/.test(details.url) === false ) {
details.url = vAPI.getURL(details.url);
}
var tab;
if ( details.select ) {
var URI = Services.io.newURI(details.url, null, null);
for ( tab of this.getAll() ) {
var browser = tabWatcher.browserFromTarget(tab);
// Or simply .equals if we care about the fragment
if ( URI.equalsExceptRef(browser.currentURI) === false ) {
continue;
}
this.select(tab);
// Update URL if fragment is different
if ( URI.equals(browser.currentURI) === false ) {
browser.loadURI(URI.asciiSpec);
}
return;
}
}
if ( details.active === undefined ) {
details.active = true;
}
if ( details.tabId ) {
tab = tabWatcher.browserFromTabId(details.tabId);
if ( tab ) {
tabWatcher.browserFromTarget(tab).loadURI(details.url);
return;
}
}
var win = winWatcher.getCurrentWindow();
var tabBrowser = getTabBrowser(win);
if ( tabBrowser === null ) {
return;
}
if ( vAPI.fennec ) {
tabBrowser.addTab(details.url, {
selected: details.active !== false,
parentId: tabBrowser.selectedTab.id
});
// Note that it's impossible to move tabs on Fennec, so don't bother
return;
}
// Open in a standalone window
if ( details.popup === true ) {
Services.ww.openWindow(
self,
details.url,
null,
'location=1,menubar=1,personalbar=1,resizable=1,toolbar=1',
null
);
return;
}
if ( vAPI.thunderbird ) {
tabBrowser.openTab('contentTab', {
contentPage: details.url,
background: !details.active
});
// TODO: Should be possible to move tabs on Thunderbird
return;
}
if ( details.index === -1 ) {
details.index = tabBrowser.browsers.indexOf(tabBrowser.selectedBrowser) + 1;
}
tab = tabBrowser.loadOneTab(details.url, { inBackground: !details.active });
if ( details.index !== undefined ) {
tabBrowser.moveTabTo(tab, details.index);
}
};
/******************************************************************************/
// Replace the URL of a tab. Noop if the tab does not exist.
vAPI.tabs.replace = function(tabId, url) {
var targetURL = url;
// extension pages
if ( /^[\w-]{2,}:/.test(targetURL) !== true ) {
targetURL = vAPI.getURL(targetURL);
}
var browser = tabWatcher.browserFromTabId(tabId);
if ( browser ) {
browser.loadURI(targetURL);
}
};
/******************************************************************************/
vAPI.tabs._remove = (function() {
if ( vAPI.fennec || vAPI.thunderbird ) {
return function(tab, tabBrowser) {
tabBrowser.closeTab(tab);
};
}
return function(tab, tabBrowser, nuke) {
if ( !tabBrowser ) {
return;
}
if ( tabBrowser.tabs.length === 1 && nuke ) {
getOwnerWindow(tab).close();
} else {
tabBrowser.removeTab(tab);
}
};
})();
/******************************************************************************/
vAPI.tabs.remove = (function() {
var remove = function(tabId, nuke) {
var browser = tabWatcher.browserFromTabId(tabId);
if ( !browser ) {
return;
}
var tab = tabWatcher.tabFromBrowser(browser);
if ( !tab ) {
return;
}
this._remove(tab, getTabBrowser(getOwnerWindow(browser)), nuke);
};
// Do this asynchronously
return function(tabId, nuke) {
vAPI.setTimeout(remove.bind(this, tabId, nuke), 1);
};
})();
/******************************************************************************/
vAPI.tabs.reload = function(tabId) {
var browser = tabWatcher.browserFromTabId(tabId);
if ( !browser ) {
return;
}
browser.webNavigation.reload(Ci.nsIWebNavigation.LOAD_FLAGS_BYPASS_CACHE);
};
/******************************************************************************/
vAPI.tabs.select = function(tab) {
if ( typeof tab !== 'object' ) {
tab = tabWatcher.tabFromBrowser(tabWatcher.browserFromTabId(tab));
}
if ( !tab ) {
return;
}
var win = getOwnerWindow(tab);
var tabBrowser = getTabBrowser(win);
if ( tabBrowser === null ) {
return;
}
// https://github.com/gorhill/uBlock/issues/470
win.focus();
if ( vAPI.fennec ) {
tabBrowser.selectTab(tab);
} else {
tabBrowser.selectedTab = tab;
}
};
/******************************************************************************/
vAPI.tabs.injectScript = function(tabId, details, callback) {
var browser = tabWatcher.browserFromTabId(tabId);
if ( !browser ) {
return;
}
if ( typeof details.file !== 'string' ) {
return;
}
details.file = vAPI.getURL(details.file);
browser.messageManager.sendAsyncMessage(
location.host + ':broadcast',
JSON.stringify({
broadcast: true,
channelName: 'vAPI',
msg: {
cmd: 'injectScript',
details: details
}
})
);
if ( typeof callback === 'function' ) {
vAPI.setTimeout(callback, 13);
}
};
/******************************************************************************/
var tabWatcher = (function() {
// https://github.com/gorhill/uMatrix/issues/540
// Use only weak references to hold onto browser references.
var browserToTabIdMap = new WeakMap();
var tabIdToBrowserMap = new Map();
var tabIdGenerator = 1;
var indexFromBrowser = function(browser) {
if ( !browser ) {
return -1;
}
// TODO: Add support for this
if ( vAPI.thunderbird ) {
return -1;
}
var win = getOwnerWindow(browser);
if ( !win ) {
return -1;
}
var tabbrowser = getTabBrowser(win);
if ( tabbrowser === null ) {
return -1;
}
// This can happen, for example, the `view-source:` window, there is
// no tabbrowser object, the browser object sits directly in the
// window.
if ( tabbrowser === browser ) {
return 0;
}
// Fennec
// https://developer.mozilla.org/en-US/Add-ons/Firefox_for_Android/API/BrowserApp
if ( vAPI.fennec ) {
return tabbrowser.tabs.indexOf(tabbrowser.getTabForBrowser(browser));
}
return tabbrowser.browsers.indexOf(browser);
};
var indexFromTarget = function(target) {
return indexFromBrowser(browserFromTarget(target));
};
var tabFromBrowser = function(browser) {
var i = indexFromBrowser(browser);
if ( i === -1 ) {
return null;
}
var win = getOwnerWindow(browser);
if ( !win ) {
return null;
}
var tabbrowser = getTabBrowser(win);
if ( tabbrowser === null ) {
return null;
}
if ( !tabbrowser.tabs || i >= tabbrowser.tabs.length ) {
return null;
}
return tabbrowser.tabs[i];
};
var browserFromTarget = (function() {
if ( vAPI.fennec ) {
return function(target) {
if ( !target ) { return null; }
if ( target.browser ) { // target is a tab
target = target.browser;
}
return target.localName === 'browser' ? target : null;
};
}
if ( vAPI.thunderbird ) {
return function(target) {
if ( !target ) { return null; }
if ( target.mode ) { // target is object with tab info
var browserFunc = target.mode.getBrowser || target.mode.tabType.getBrowser;
if ( browserFunc ) {
return browserFunc.call(target.mode.tabType, target);
}
}
return target.localName === 'browser' ? target : null;
};
}
return function(target) {
if ( !target ) { return null; }
if ( target.linkedPanel ) { // target is a tab
target = target.linkedBrowser;
}
return target.localName === 'browser' ? target : null;
};
})();
var tabIdFromTarget = function(target) {
var browser = browserFromTarget(target);
if ( browser === null ) {
return vAPI.noTabId;
}
var tabId = browserToTabIdMap.get(browser);
if ( tabId === undefined ) {
tabId = '' + tabIdGenerator++;
browserToTabIdMap.set(browser, tabId);
tabIdToBrowserMap.set(tabId, Cu.getWeakReference(browser));
}
return tabId;
};
var browserFromTabId = function(tabId) {
var weakref = tabIdToBrowserMap.get(tabId);
return weakref && weakref.get() || null;
};
var currentBrowser = function() {
var win = winWatcher.getCurrentWindow();
// https://github.com/gorhill/uBlock/issues/399
// getTabBrowser() can return null at browser launch time.
var tabBrowser = getTabBrowser(win);
if ( tabBrowser === null ) {
return null;
}
if ( vAPI.thunderbird ) {
// Directly at startup the first tab may not be initialized
if ( tabBrowser.tabInfo.length === 0 ) {
return null;
}
return tabBrowser.getBrowserForSelectedTab() || null;
}
return browserFromTarget(tabBrowser.selectedTab);
};
var removeBrowserEntry = function(tabId, browser) {
if ( tabId && tabId !== vAPI.noTabId ) {
vAPI.tabs.onClosed(tabId);
delete vAPI.toolbarButton.tabs[tabId];
tabIdToBrowserMap.delete(tabId);
}
if ( browser ) {
browserToTabIdMap.delete(browser);
}
};
var removeTarget = function(target) {
onClose({ target: target });
};
var getAllBrowsers = function() {
var browsers = [], browser;
for ( var weakref of tabIdToBrowserMap.values() ) {
browser = weakref.get();
// TODO:
// Maybe call removeBrowserEntry() if the browser no longer exists?
if ( browser ) {
browsers.push(browser);
}
}
return browsers;
};
// https://developer.mozilla.org/en-US/docs/Web/Events/TabShow
var onShow = function({target}) {
tabIdFromTarget(target);
};
// https://developer.mozilla.org/en-US/docs/Web/Events/TabClose
var onClose = function({target}) {
// target is tab in Firefox, browser in Fennec
var browser = browserFromTarget(target);
var tabId = browserToTabIdMap.get(browser);
removeBrowserEntry(tabId, browser);
};
// https://developer.mozilla.org/en-US/docs/Web/Events/TabSelect
var onSelect = function({target}) {
vAPI.setIcon(tabIdFromTarget(target), getOwnerWindow(target));
};
var attachToTabBrowser = function(window) {
if ( typeof vAPI.toolbarButton.attachToNewWindow === 'function' ) {
vAPI.toolbarButton.attachToNewWindow(window);
}
var tabBrowser = getTabBrowser(window);
if ( tabBrowser === null ) {
return;
}
var tabContainer;
if ( tabBrowser.deck ) { // Fennec
tabContainer = tabBrowser.deck;
} else if ( tabBrowser.tabContainer ) { // Firefox
tabContainer = tabBrowser.tabContainer;
vAPI.contextMenu.register(window);
}
// https://github.com/gorhill/uBlock/issues/697
// Ignore `TabShow` events: unfortunately the `pending` attribute is
// not set when a tab is opened as a result of session restore -- it is
// set *after* the event is fired in such case.
if ( tabContainer ) {
tabContainer.addEventListener('TabShow', onShow);
tabContainer.addEventListener('TabClose', onClose);
// when new window is opened TabSelect doesn't run on the selected tab?
tabContainer.addEventListener('TabSelect', onSelect);
}
};
// https://github.com/gorhill/uBlock/issues/906
// Ensure the environment is ready before trying to attaching.
var canAttachToTabBrowser = function(window) {
var document = window && window.document;
if ( !document || document.readyState !== 'complete' ) {
return false;
}
// On some platforms, the tab browser isn't immediately available,
// try waiting a bit if this happens.
// https://github.com/gorhill/uBlock/issues/763
// Not getting a tab browser should not prevent from attaching ourself
// to the window.
var tabBrowser = getTabBrowser(window);
if ( tabBrowser === null ) {
return false;
}
return winWatcher.toBrowserWindow(window) !== null;
};
var onWindowLoad = function(win) {
deferUntil(
canAttachToTabBrowser.bind(null, win),
attachToTabBrowser.bind(null, win)
);
};
var onWindowUnload = function(win) {
vAPI.contextMenu.unregister(win);
var tabBrowser = getTabBrowser(win);
if ( tabBrowser === null ) {
return;
}
var tabContainer;
if ( tabBrowser.deck ) { // Fennec
tabContainer = tabBrowser.deck;
} else if ( tabBrowser.tabContainer ) { // Firefox
tabContainer = tabBrowser.tabContainer;
}
if ( tabContainer ) {
tabContainer.removeEventListener('TabShow', onShow);
tabContainer.removeEventListener('TabClose', onClose);
tabContainer.removeEventListener('TabSelect', onSelect);
}
// https://github.com/gorhill/uBlock/issues/574
// To keep in mind: not all windows are tab containers,
// sometimes the window IS the tab.
var tabs;
if ( vAPI.thunderbird ) {
tabs = tabBrowser.tabInfo;
} else if ( tabBrowser.tabs ) {
tabs = tabBrowser.tabs;
} else if ( tabBrowser.localName === 'browser' ) {
tabs = [tabBrowser];
} else {
tabs = [];
}
var browser, tabId;
var tabindex = tabs.length, tab;
while ( tabindex-- ) {
tab = tabs[tabindex];
browser = browserFromTarget(tab);
if ( browser === null ) {
continue;
}
tabId = browserToTabIdMap.get(browser);
if ( tabId !== undefined ) {
removeBrowserEntry(tabId, browser);
tabIdToBrowserMap.delete(tabId);
}
browserToTabIdMap.delete(browser);
}
};
// Initialize map with existing active tabs
var start = function() {
var tabBrowser, tabs, tab;
for ( var win of winWatcher.getWindows() ) {
onWindowLoad(win);
tabBrowser = getTabBrowser(win);
if ( tabBrowser === null ) {
continue;
}
// `tabBrowser.tabs` may not exist (Thunderbird).
tabs = tabBrowser.tabs;
if ( !tabs ) {
continue;
}
for ( tab of tabs ) {
if ( vAPI.fennec || !tab.hasAttribute('pending') ) {
tabIdFromTarget(tab);
}
}
}
winWatcher.onOpenWindow = onWindowLoad;
winWatcher.onCloseWindow = onWindowUnload;
};
var stop = function() {
winWatcher.onOpenWindow = null;
winWatcher.onCloseWindow = null;
for ( var win of winWatcher.getWindows() ) {
onWindowUnload(win);
}
browserToTabIdMap = new WeakMap();
tabIdToBrowserMap.clear();
};
cleanupTasks.push(stop);
return {
browsers: getAllBrowsers,
browserFromTabId: browserFromTabId,
browserFromTarget: browserFromTarget,
currentBrowser: currentBrowser,
indexFromTarget: indexFromTarget,
removeTarget: removeTarget,
start: start,
tabFromBrowser: tabFromBrowser,
tabIdFromTarget: tabIdFromTarget
};
})();
/******************************************************************************/
vAPI.setIcon = function(tabId, iconStatus, badge) {
// If badge is undefined, then setIcon was called from the TabSelect event
var win = badge === undefined
? iconStatus
: winWatcher.getCurrentWindow();
var curTabId;
var tabBrowser = getTabBrowser(win);
if ( tabBrowser !== null ) {
curTabId = tabWatcher.tabIdFromTarget(tabBrowser.selectedTab);
}
var tb = vAPI.toolbarButton;
// from 'TabSelect' event
if ( tabId === undefined ) {
tabId = curTabId;
} else if ( badge !== undefined ) {
tb.tabs[tabId] = { badge: badge, img: iconStatus === 'on' };
}
if ( curTabId && tabId === curTabId ) {
tb.updateState(win, tabId);
vAPI.contextMenu.onMustUpdate(tabId);
}
};
/******************************************************************************/
vAPI.messaging = {
get globalMessageManager() {
return Cc['@mozilla.org/globalmessagemanager;1']
.getService(Ci.nsIMessageListenerManager);
},
frameScriptURL: vAPI.getURL('frameScript.js'),
listeners: {},
defaultHandler: null,
NOOPFUNC: function(){},
UNHANDLED: 'vAPI.messaging.notHandled'
};
/******************************************************************************/
vAPI.messaging.listen = function(listenerName, callback) {
this.listeners[listenerName] = callback;
};
/******************************************************************************/
vAPI.messaging.onMessage = (function() {
var messaging = vAPI.messaging;
var toAuxPending = {};
// Use a wrapper to avoid closure and to allow reuse.
var CallbackWrapper = function(messageManager, listenerId, channelName, auxProcessId, timeout) {
this.callback = this.proxy.bind(this); // bind once
this.init(messageManager, listenerId, channelName, auxProcessId, timeout);
};
CallbackWrapper.prototype.init = function(messageManager, listenerId, channelName, auxProcessId, timeout) {
this.messageManager = messageManager;
this.listenerId = listenerId;
this.channelName = channelName;
this.auxProcessId = auxProcessId;
this.timerId = timeout !== undefined ?
vAPI.setTimeout(this.callback, timeout) :
null;
return this;
};
CallbackWrapper.prototype.proxy = function(response) {
if ( this.timerId !== null ) {
clearTimeout(this.timerId);
delete toAuxPending[this.timerId];
this.timerId = null;
}
var message = JSON.stringify({
auxProcessId: this.auxProcessId,
channelName: this.channelName,
msg: response !== undefined ? response : null
});
if ( this.messageManager.sendAsyncMessage ) {
this.messageManager.sendAsyncMessage(this.listenerId, message);
} else {
this.messageManager.broadcastAsyncMessage(this.listenerId, message);
}
// Mark for reuse
this.messageManager =
this.listenerId =
this.channelName =
this.auxProcessId = null;
callbackWrapperJunkyard.push(this);
};
var callbackWrapperJunkyard = [];
var callbackWrapperFactory = function(messageManager, listenerId, channelName, auxProcessId, timeout) {
var wrapper = callbackWrapperJunkyard.pop();
if ( wrapper ) {
return wrapper.init(messageManager, listenerId, channelName, auxProcessId, timeout);
}
return new CallbackWrapper(messageManager, listenerId, channelName, auxProcessId, timeout);
};
// "Auxiliary process": any process other than main process.
var toAux = function(target, details) {
var messageManagerFrom = target.messageManager;
// Message came from a popup, and its message manager is not usable.
// So instead we broadcast to the parent window.
if ( !messageManagerFrom ) {
messageManagerFrom = getOwnerWindow(
target.webNavigation.QueryInterface(Ci.nsIDocShell).chromeEventHandler
).messageManager;
}
var wrapper;
if ( details.auxProcessId !== undefined ) {
var channelNameRaw = details.channelName;
var pos = channelNameRaw.indexOf('|');
wrapper = callbackWrapperFactory(
messageManagerFrom,
channelNameRaw.slice(0, pos),
channelNameRaw.slice(pos + 1),
details.auxProcessId,
1023
);
}
var messageManagerTo = null;
var browser = tabWatcher.browserFromTabId(details.toTabId);
if ( browser !== null && browser.messageManager ) {
messageManagerTo = browser.messageManager;
}
if ( messageManagerTo === null ) {
if ( wrapper !== undefined ) {
wrapper.callback();
}
return;
}
// As per HTML5, timer id is always an integer, thus suitable to be used
// as a key, and which value is safe to use across process boundaries.
if ( wrapper !== undefined ) {
toAuxPending[wrapper.timerId] = wrapper;
}
var targetId = location.host + ':broadcast';
var payload = JSON.stringify({
mainProcessId: wrapper && wrapper.timerId,
channelName: details.toChannel,
msg: details.msg
});
if ( messageManagerTo.sendAsyncMessage ) {
messageManagerTo.sendAsyncMessage(targetId, payload);
} else {
messageManagerTo.broadcastAsyncMessage(targetId, payload);
}
};
var toAuxResponse = function(details) {
var mainProcessId = details.mainProcessId;
if ( mainProcessId === undefined ) {
return;
}
if ( toAuxPending.hasOwnProperty(mainProcessId) === false ) {
return;
}
var wrapper = toAuxPending[mainProcessId];
delete toAuxPending[mainProcessId];
wrapper.callback(details.msg);
};
return function({target, data}) {
// Auxiliary process to auxiliary process
if ( data.toTabId !== undefined ) {
toAux(target, data);
return;
}
// Auxiliary process to auxiliary process: response
if ( data.mainProcessId !== undefined ) {
toAuxResponse(data);
return;
}
// Auxiliary process to main process
var messageManager = target.messageManager;
// Message came from a popup, and its message manager is not usable.
// So instead we broadcast to the parent window.
if ( !messageManager ) {
messageManager = getOwnerWindow(
target.webNavigation.QueryInterface(Ci.nsIDocShell).chromeEventHandler
).messageManager;
}
var channelNameRaw = data.channelName;
var pos = channelNameRaw.indexOf('|');
var channelName = channelNameRaw.slice(pos + 1);
// Auxiliary process to main process: prepare response
var callback = messaging.NOOPFUNC;
if ( data.auxProcessId !== undefined ) {
callback = callbackWrapperFactory(
messageManager,
channelNameRaw.slice(0, pos),
channelName,
data.auxProcessId
).callback;
}
var sender = {
tab: {
id: tabWatcher.tabIdFromTarget(target)
}
};
// Auxiliary process to main process: specific handler
var r = messaging.UNHANDLED;
var listener = messaging.listeners[channelName];
if ( typeof listener === 'function' ) {
r = listener(data.msg, sender, callback);
}
if ( r !== messaging.UNHANDLED ) {
return;
}
// Auxiliary process to main process: default handler
r = messaging.defaultHandler(data.msg, sender, callback);
if ( r !== messaging.UNHANDLED ) {
return;
}
// Auxiliary process to main process: no handler
console.error('uBlock> messaging > unknown request: %o', data);
// Need to callback anyways in case caller expected an answer, or
// else there is a memory leak on caller's side
callback();
};
})();
/******************************************************************************/
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;
this.globalMessageManager.addMessageListener(
location.host + ':background',
this.onMessage
);
this.globalMessageManager.loadFrameScript(this.frameScriptURL, true);
cleanupTasks.push(function() {
var gmm = vAPI.messaging.globalMessageManager;
gmm.broadcastAsyncMessage(
location.host + ':broadcast',
JSON.stringify({
broadcast: true,
channelName: 'vAPI',
msg: { cmd: 'shutdownSandbox' }
})
);
gmm.removeDelayedFrameScript(vAPI.messaging.frameScriptURL);
gmm.removeMessageListener(
location.host + ':background',
vAPI.messaging.onMessage
);
vAPI.messaging.defaultHandler = null;
});
};
/******************************************************************************/
vAPI.messaging.broadcast = function(message) {
this.globalMessageManager.broadcastAsyncMessage(
location.host + ':broadcast',
JSON.stringify({broadcast: true, msg: message})
);
};
/******************************************************************************/
/******************************************************************************/
// Synchronous messaging: Firefox allows this. Chromium does not allow this.
// Sometimes there is no way around synchronous messaging, as long as:
// - the code at the other end execute fast and return quickly.
// - it's not abused.
// Original rationale is <https://github.com/gorhill/uBlock/issues/756>.
// Synchronous messaging is a good solution for this case because:
// - It's done only *once* per page load. (Keep in mind there is already a
// sync message sent for each single network request on a page and it's not
// an issue, because the code executed is trivial, which is the key -- see
// shouldLoadListener below).
// - The code at the other end is fast.
// Though vAPI.rpcReceiver was brought forth because of this one case, I
// generalized the concept for whatever future need for synchronous messaging
// which might arise.
// https://developer.mozilla.org/en-US/Firefox/Multiprocess_Firefox/Message_Manager/Message_manager_overview#Content_frame_message_manager
vAPI.rpcReceiver = (function() {
var calls = Object.create(null);
var childProcessMessageName = location.host + ':child-process-message';
var onChildProcessMessage = function(ev) {
var msg = ev.data;
if ( !msg ) { return; }
var fn = calls[msg.fnName];
if ( typeof fn === 'function' ) {
return fn(msg);
}
};
var ppmm = Services.ppmm;
if ( !ppmm ) {
ppmm = Cc['@mozilla.org/parentprocessmessagemanager;1'];
if ( ppmm ) {
ppmm = ppmm.getService(Ci.nsIMessageListenerManager);
}
}
if ( ppmm ) {
ppmm.addMessageListener(
childProcessMessageName,
onChildProcessMessage
);
}
cleanupTasks.push(function() {
if ( ppmm ) {
ppmm.removeMessageListener(
childProcessMessageName,
onChildProcessMessage
);
}
});
return calls;
})();
/******************************************************************************/
/******************************************************************************/
var httpObserver = {
classDescription: 'net-channel-event-sinks for ' + location.host,
classID: Components.ID('{dc8d6319-5f6e-4438-999e-53722db99e84}'),
contractID: '@' + location.host + '/net-channel-event-sinks;1',
REQDATAKEY: location.host + 'reqdata',
ABORT: Components.results.NS_BINDING_ABORTED,
ACCEPT: Components.results.NS_SUCCEEDED,
// Request types:
// https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/nsIContentPolicy#Constants
typeMap: {
1: 'other',
2: 'script',
3: 'image',
4: 'stylesheet',
5: 'object',
6: 'main_frame',
7: 'sub_frame',
10: 'ping',
11: 'xmlhttprequest',
12: 'object',
14: 'font',
15: 'media',
16: 'websocket',
19: 'beacon',
21: 'image'
},
onBeforeRequest: function(){},
onBeforeRequestTypes: null,
onHeadersReceived: function(){},
onHeadersReceivedTypes: null,
get componentRegistrar() {
return Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
},
get categoryManager() {
return Cc['@mozilla.org/categorymanager;1']
.getService(Ci.nsICategoryManager);
},
QueryInterface: (function() {
var {XPCOMUtils} = Cu.import('resource://gre/modules/XPCOMUtils.jsm', null);
return XPCOMUtils.generateQI([
Ci.nsIFactory,
Ci.nsIObserver,
Ci.nsIChannelEventSink,
Ci.nsISupportsWeakReference
]);
})(),
createInstance: function(outer, iid) {
if ( outer ) {
throw Components.results.NS_ERROR_NO_AGGREGATION;
}
return this.QueryInterface(iid);
},
register: function() {
this.pendingRingBufferInit();
Services.obs.addObserver(this, 'http-on-modify-request', true);
Services.obs.addObserver(this, 'http-on-examine-response', true);
// Guard against stale instances not having been unregistered
if ( this.componentRegistrar.isCIDRegistered(this.classID) ) {
try {
this.componentRegistrar.unregisterFactory(this.classID, Components.manager.getClassObject(this.classID, Ci.nsIFactory));
} catch (ex) {
console.error('uBlock> httpObserver > unable to unregister stale instance: ', ex);
}
}
this.componentRegistrar.registerFactory(
this.classID,
this.classDescription,
this.contractID,
this
);
this.categoryManager.addCategoryEntry(
'net-channel-event-sinks',
this.contractID,
this.contractID,
false,
true
);
},
unregister: function() {
Services.obs.removeObserver(this, 'http-on-modify-request');
Services.obs.removeObserver(this, 'http-on-examine-response');
this.componentRegistrar.unregisterFactory(this.classID, this);
this.categoryManager.deleteCategoryEntry(
'net-channel-event-sinks',
this.contractID,
false
);
},
PendingRequest: function() {
this.frameId = 0;
this.parentFrameId = 0;
this.rawtype = 0;
this.tabId = 0;
this._key = ''; // key is url, from URI.spec
},
// If all work fine, this map should not grow indefinitely. It can have
// stale items in it, but these will be taken care of when entries in
// the ring buffer are overwritten.
pendingURLToIndex: new Map(),
pendingWritePointer: 0,
pendingRingBuffer: new Array(256),
pendingRingBufferInit: function() {
// Use and reuse pre-allocated PendingRequest objects = less memory
// churning.
var i = this.pendingRingBuffer.length;
while ( i-- ) {
this.pendingRingBuffer[i] = new this.PendingRequest();
}
},
// Pending request ring buffer:
// +-------+-------+-------+-------+-------+-------+-------
// |0 |1 |2 |3 |4 |5 |...
// +-------+-------+-------+-------+-------+-------+-------
//
// URL to ring buffer index map:
// { k = URL, s = ring buffer indices }
//
// s is a string which character codes map to ring buffer indices -- for
// when the same URL is received multiple times by shouldLoadListener()
// before the existing one is serviced by the network request observer.
// I believe the use of a string in lieu of an array reduces memory
// churning.
createPendingRequest: function(url) {
var bucket;
var i = this.pendingWritePointer;
this.pendingWritePointer = i + 1 & 255;
var preq = this.pendingRingBuffer[i];
var si = String.fromCharCode(i);
// Cleanup unserviced pending request
if ( preq._key !== '' ) {
bucket = this.pendingURLToIndex.get(preq._key);
if ( bucket.length === 1 ) {
this.pendingURLToIndex.delete(preq._key);
} else {
var pos = bucket.indexOf(si);
this.pendingURLToIndex.set(preq._key, bucket.slice(0, pos) + bucket.slice(pos + 1));
}
}
bucket = this.pendingURLToIndex.get(url);
this.pendingURLToIndex.set(url, bucket === undefined ? si : si + bucket);
preq._key = url;
return preq;
},
lookupPendingRequest: function(url) {
var bucket = this.pendingURLToIndex.get(url);
if ( bucket === undefined ) {
return null;
}
var i = bucket.charCodeAt(0);
if ( bucket.length === 1 ) {
this.pendingURLToIndex.delete(url);
} else {
this.pendingURLToIndex.set(url, bucket.slice(1));
}
var preq = this.pendingRingBuffer[i];
preq._key = ''; // mark as "serviced"
return preq;
},
// https://github.com/gorhill/uMatrix/issues/165
// https://developer.mozilla.org/en-US/Firefox/Releases/3.5/Updating_extensions#Getting_a_load_context_from_a_request
// Not sure `umatrix:shouldLoad` is still needed, uMatrix does not
// care about embedded frames topography.
// Also:
// https://developer.mozilla.org/en-US/Firefox/Multiprocess_Firefox/Limitations_of_chrome_scripts
tabIdFromChannel: function(channel) {
var lc;
try {
lc = channel.notificationCallbacks.getInterface(Ci.nsILoadContext);
} catch(ex) {
}
if ( !lc ) {
try {
lc = channel.loadGroup.notificationCallbacks.getInterface(Ci.nsILoadContext);
} catch(ex) {
}
if ( !lc ) {
return vAPI.noTabId;
}
}
if ( lc.topFrameElement ) {
return tabWatcher.tabIdFromTarget(lc.topFrameElement);
}
var win;
try {
win = lc.associatedWindow;
} catch (ex) { }
if ( !win ) {
return vAPI.noTabId;
}
if ( win.top ) {
win = win.top;
}
var tabBrowser;
try {
tabBrowser = getTabBrowser(
win.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIWebNavigation)
.QueryInterface(Ci.nsIDocShell).rootTreeItem
.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindow)
);
} catch (ex) { }
if ( !tabBrowser ) {
return vAPI.noTabId;
}
if ( tabBrowser.getBrowserForContentWindow ) {
return tabWatcher.tabIdFromTarget(tabBrowser.getBrowserForContentWindow(win));
}
// Falling back onto _getTabForContentWindow to ensure older versions
// of Firefox work well.
return tabBrowser._getTabForContentWindow ?
tabWatcher.tabIdFromTarget(tabBrowser._getTabForContentWindow(win)) :
vAPI.noTabId;
},
// https://github.com/gorhill/uBlock/issues/959
syntheticPendingRequest: { frameId: 0, parentFrameId: -1, tabId: '', rawtype: 1 },
handleRequest: function(channel, URI, details) {
var type = this.typeMap[details.rawtype] || 'other';
if ( this.onBeforeRequestTypes && this.onBeforeRequestTypes.has(type) === false ) {
return false;
}
// https://github.com/uBlockOrigin/uAssets/issues/123#issuecomment-244055243
// Need special handling for websocket requests: http-based websocket
// requests will be evaluated as ws-based websocket requests.
if ( details.rawtype === 16 && URI.asciiSpec.startsWith('http') ) {
URI = Services.io.newURI(URI.asciiSpec.replace(/^http(s)?:/, 'ws$1:'), null, null);
}
var result = this.onBeforeRequest({
frameId: details.frameId,
parentFrameId: details.parentFrameId,
tabId: details.tabId,
type: type,
url: URI.asciiSpec
});
if ( result && typeof result === 'object' ) {
if ( 'cancel' in result && result.cancel === true ) {
channel.cancel(this.ABORT);
return true;
}
if ( 'redirectUrl' in result ) {
channel.redirectionLimit = 1;
channel.redirectTo(Services.io.newURI(result.redirectUrl, null, null));
return true;
}
}
return false;
},
getResponseHeader: function(channel, name) {
var value;
try {
value = channel.getResponseHeader(name);
} catch (ex) {
}
return value;
},
handleResponseHeaders: function(channel, URI, channelData) {
var requestType = this.typeMap[channelData[3]] || 'other';
if ( this.onHeadersReceivedTypes && this.onHeadersReceivedTypes.has(requestType) === false ) {
return;
}
// 'Content-Security-Policy' MUST come last in the array. Need to
// revised this eventually.
var responseHeaders = [];
var value = channel.contentLength;
if ( value !== -1 ) {
responseHeaders.push({ name: 'Content-Length', value: value });
}
if ( requestType.endsWith('_frame') ) {
value = this.getResponseHeader(channel, 'Content-Security-Policy');
if ( value !== undefined ) {
responseHeaders.push({ name: 'Content-Security-Policy', value: value });
}
}
var result = this.onHeadersReceived({
parentFrameId: channelData[1],
responseHeaders: responseHeaders,
tabId: channelData[2],
type: requestType,
url: URI.asciiSpec
});
if ( !result ) {
return;
}
if ( result.cancel ) {
channel.cancel(this.ABORT);
return;
}
if ( result.responseHeaders && result.responseHeaders.length ) {
channel.setResponseHeader(
'Content-Security-Policy',
result.responseHeaders.pop().value,
true
);
return;
}
},
channelDataFromChannel: function(channel) {
if ( channel instanceof Ci.nsIWritablePropertyBag ) {
try {
return channel.getProperty(this.REQDATAKEY) || null;
} catch (ex) {
}
}
return null;
},
observe: function(channel, topic) {
if ( channel instanceof Ci.nsIHttpChannel === false ) {
return;
}
var URI = channel.URI;
var channelData = this.channelDataFromChannel(channel);
if ( topic === 'http-on-examine-response' ) {
if ( channelData !== null ) {
this.handleResponseHeaders(channel, URI, channelData);
}
return;
}
// http-on-modify-request
// The channel was previously serviced.
if ( channelData !== null ) {
this.handleRequest(channel, URI, {
frameId: channelData[0],
parentFrameId: channelData[1],
tabId: channelData[2],
rawtype: channelData[3]
});
return;
}
// The channel was never serviced.
var pendingRequest = this.lookupPendingRequest(URI.spec);
// https://github.com/gorhill/uMatrix/issues/390#issuecomment-155759004
var loadInfo = channel.loadInfo,
rawtype = 1,
frameId = 0,
parentFrameId = -1;
// https://bugzilla.mozilla.org/show_bug.cgi?id=1232354
// https://dxr.mozilla.org/mozilla-central/source/toolkit/modules/addons/WebRequest.jsm#537-553
// For modern Firefox, loadInfo contains the information about the
// context of the network request.
if ( loadInfo ) {
rawtype = loadInfo.externalContentPolicyType !== undefined ?
loadInfo.externalContentPolicyType :
loadInfo.contentPolicyType;
if ( !rawtype ) {
rawtype = 1;
}
frameId = loadInfo.frameOuterWindowID ? loadInfo.frameOuterWindowID : loadInfo.outerWindowID;
parentFrameId = loadInfo.frameOuterWindowID ? loadInfo.outerWindowID : loadInfo.parentOuterWindowID;
if ( frameId === parentFrameId ) {
parentFrameId = -1;
}
}
if ( pendingRequest !== null ) {
// https://github.com/gorhill/uBlock/issues/654
// Use the request type from the HTTP observer point of view.
if ( rawtype !== 1 ) {
pendingRequest.rawtype = rawtype;
}
// IMPORTANT:
// If this is a main frame, ensure that the proper tab id is being
// used: it can happen that the wrong tab id was looked up at
// `shouldLoadListener` time. Without this, the popup blocker may
// not work properly, and also a tab opened from a link may end up
// being wrongly reported as an embedded element.
if ( pendingRequest.rawtype === 6 ) {
var tabId = this.tabIdFromChannel(channel);
if ( tabId !== vAPI.noTabId ) {
pendingRequest.tabId = tabId;
}
}
} else { // pendingRequest === null
// No matching pending request found, synthetize one.
pendingRequest = this.syntheticPendingRequest;
pendingRequest.tabId = this.tabIdFromChannel(channel);
pendingRequest.rawtype = rawtype;
pendingRequest.frameId = frameId;
pendingRequest.parentFrameId = parentFrameId;
}
if ( this.handleRequest(channel, URI, pendingRequest) ) {
return;
}
// If request is not handled we may use the data in on-modify-request
if ( channel instanceof Ci.nsIWritablePropertyBag ) {
channel.setProperty(this.REQDATAKEY, [
pendingRequest.frameId,
pendingRequest.parentFrameId,
pendingRequest.tabId,
pendingRequest.rawtype
]);
}
},
// contentPolicy.shouldLoad doesn't detect redirects, this needs to be used
asyncOnChannelRedirect: function(oldChannel, newChannel, flags, callback) {
// If error thrown, the redirect will fail
try {
var URI = newChannel.URI;
if ( !URI.schemeIs('http') && !URI.schemeIs('https') ) {
return;
}
if (
oldChannel instanceof Ci.nsIWritablePropertyBag === false ||
newChannel instanceof Ci.nsIWritablePropertyBag === false
) {
return;
}
// Carry the data on in case of multiple redirects
newChannel.setProperty(
this.REQDATAKEY,
oldChannel.getProperty(this.REQDATAKEY)
);
} catch (ex) {
// console.error(ex);
} finally {
callback.onRedirectVerifyCallback(this.ACCEPT);
}
}
};
/******************************************************************************/
/******************************************************************************/
vAPI.net = {};
/******************************************************************************/
vAPI.net.registerListeners = function() {
// Since it's not used
this.onBeforeSendHeaders = null;
if ( typeof this.onBeforeRequest.callback === 'function' ) {
httpObserver.onBeforeRequest = this.onBeforeRequest.callback;
httpObserver.onBeforeRequestTypes = this.onBeforeRequest.types ?
new Set(this.onBeforeRequest.types) :
null;
}
if ( typeof this.onHeadersReceived.callback === 'function' ) {
httpObserver.onHeadersReceived = this.onHeadersReceived.callback;
httpObserver.onHeadersReceivedTypes = this.onHeadersReceived.types ?
new Set(this.onHeadersReceived.types) :
null;
}
var shouldLoadPopupListenerMessageName = location.host + ':shouldLoadPopup';
var shouldLoadPopupListener = function(openerURL, popupTabId) {
var uri, openerTabId;
for ( var browser of tabWatcher.browsers() ) {
uri = browser.currentURI;
// Probably isn't the best method to identify the source tab.
// https://github.com/gorhill/uBlock/issues/450
// Skip entry if no valid URI available.
// Apparently URI can be undefined under some circumstances: I
// believe this may have to do with those very temporary
// browser objects created when opening a new tab, i.e. related
// to https://github.com/gorhill/uBlock/issues/212
if ( !uri || uri.spec !== openerURL ) {
continue;
}
openerTabId = tabWatcher.tabIdFromTarget(browser);
if ( openerTabId !== popupTabId ) {
vAPI.tabs.onPopupCreated(popupTabId, openerTabId);
break;
}
}
};
var shouldLoadPopupListenerAsync = function(e) {
if ( typeof vAPI.tabs.onPopupCreated !== 'function' ) {
return;
}
// We are handling a synchronous message: do not block.
vAPI.setTimeout(
shouldLoadPopupListener.bind(null, e.data, tabWatcher.tabIdFromTarget(e.target)),
1
);
};
vAPI.messaging.globalMessageManager.addMessageListener(
shouldLoadPopupListenerMessageName,
shouldLoadPopupListenerAsync
);
var shouldLoadListenerMessageName = location.host + ':shouldLoad';
var shouldLoadListener = function(e) {
// Non blocking: it is assumed that the http observer is fired after
// shouldLoad recorded the pending requests. If this is not the case,
// a request would end up being categorized as a behind-the-scene
// requests.
var details = e.data;
// We are being called synchronously from the content process, so we
// must return ASAP. The code below merely record the details of the
// request into a ring buffer for later retrieval by the HTTP observer.
var pendingReq = httpObserver.createPendingRequest(details.url);
pendingReq.frameId = details.frameId;
pendingReq.parentFrameId = details.pFrameId;
pendingReq.rawtype = details.type;
pendingReq.tabId = tabWatcher.tabIdFromTarget(e.target);
};
vAPI.messaging.globalMessageManager.addMessageListener(
shouldLoadListenerMessageName,
shouldLoadListener
);
var locationChangedListenerMessageName = location.host + ':locationChanged';
var locationChangedListener = function(e) {
var browser = e.target;
// I have seen this happens (at startup time)
if ( !browser.currentURI ) {
return;
}
// https://github.com/gorhill/uBlock/issues/697
// Dismiss event if the associated tab is pending.
var tab = tabWatcher.tabFromBrowser(browser);
if ( !vAPI.fennec && tab && tab.hasAttribute('pending') ) {
// https://github.com/gorhill/uBlock/issues/820
// Firefox quirk: it happens the `pending` attribute was not
// present for certain tabs at startup -- and this can cause
// unwanted [browser <--> tab id] associations internally.
// Dispose of these if it is found the `pending` attribute is
// set.
tabWatcher.removeTarget(tab);
return;
}
var details = e.data;
var tabId = tabWatcher.tabIdFromTarget(browser);
// Ignore notifications related to our popup
if ( details.url.startsWith(vAPI.getURL('popup.html')) ) {
return;
}
// LOCATION_CHANGE_SAME_DOCUMENT = "did not load a new document"
if ( details.flags & Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT ) {
vAPI.tabs.onUpdated(tabId, {url: details.url}, {
frameId: 0,
tabId: tabId,
url: browser.currentURI.asciiSpec
});
return;
}
// https://github.com/chrisaljoudi/uBlock/issues/105
// Allow any kind of pages
vAPI.tabs.onNavigation({
frameId: 0,
tabId: tabId,
url: details.url
});
};
vAPI.messaging.globalMessageManager.addMessageListener(
locationChangedListenerMessageName,
locationChangedListener
);
httpObserver.register();
cleanupTasks.push(function() {
vAPI.messaging.globalMessageManager.removeMessageListener(
shouldLoadPopupListenerMessageName,
shouldLoadPopupListenerAsync
);
vAPI.messaging.globalMessageManager.removeMessageListener(
shouldLoadListenerMessageName,
shouldLoadListener
);
vAPI.messaging.globalMessageManager.removeMessageListener(
locationChangedListenerMessageName,
locationChangedListener
);
httpObserver.unregister();
});
};
/******************************************************************************/
/******************************************************************************/
vAPI.toolbarButton = {
id: location.host + '-button',
type: 'view',
viewId: location.host + '-panel',
label: vAPI.app.name,
tooltiptext: vAPI.app.name,
tabs: {/*tabId: {badge: 0, img: boolean}*/},
init: null,
codePath: ''
};
/******************************************************************************/
// Fennec
(function() {
if ( !vAPI.fennec ) {
return;
}
var tbb = vAPI.toolbarButton;
tbb.codePath = 'fennec';
var menuItemIds = new WeakMap();
var shutdown = function() {
for ( var win of winWatcher.getWindows() ) {
var id = menuItemIds.get(win);
if ( !id ) {
continue;
}
win.NativeWindow.menu.remove(id);
menuItemIds.delete(win);
}
};
tbb.getMenuItemLabel = function(tabId) {
var label = this.label;
if ( tabId === undefined ) {
return label;
}
var tabDetails = this.tabs[tabId];
if ( !tabDetails ) {
return label;
}
if ( !tabDetails.img ) {
label += ' (' + vAPI.i18n('fennecMenuItemBlockingOff') + ')';
} else if ( tabDetails.badge ) {
label += ' (' + tabDetails.badge + ')';
}
return label;
};
tbb.onClick = function() {
var win = winWatcher.getCurrentWindow();
var curTabId = tabWatcher.tabIdFromTarget(getTabBrowser(win).selectedTab);
vAPI.tabs.open({
url: 'popup.html?tabId=' + curTabId,
index: -1,
select: true
});
};
tbb.updateState = function(win, tabId) {
var id = menuItemIds.get(win);
if ( !id ) {
return;
}
win.NativeWindow.menu.update(id, {
name: this.getMenuItemLabel(tabId)
});
};
// https://github.com/gorhill/uBlock/issues/955
// Defer until `NativeWindow` is available.
tbb.initOne = function(win) {
if ( !win.NativeWindow ) {
return;
}
var label = this.getMenuItemLabel();
var id = win.NativeWindow.menu.add({
name: label,
callback: this.onClick
});
menuItemIds.set(win, id);
};
tbb.canInit = function(win) {
return !!win.NativeWindow;
};
tbb.init = function() {
// Only actually expecting one window under Fennec (note, not tabs, windows)
for ( var win of winWatcher.getWindows() ) {
deferUntil(
this.canInit.bind(this, win),
this.initOne.bind(this, win)
);
}
cleanupTasks.push(shutdown);
};
})();
/******************************************************************************/
// Non-Fennec: common code paths.
(function() {
if ( vAPI.fennec ) {
return;
}
var tbb = vAPI.toolbarButton;
tbb.onViewShowing = function({target}) {
target.firstChild.setAttribute('src', vAPI.getURL('popup.html'));
};
tbb.onViewHiding = function({target}) {
target.parentNode.style.maxWidth = '';
target.firstChild.setAttribute('src', 'about:blank');
};
tbb.updateState = function(win, tabId) {
var button = win.document.getElementById(this.id);
if ( !button ) {
return;
}
var icon = this.tabs[tabId];
button.setAttribute('badge', icon && icon.badge || '');
button.classList.toggle('off', !icon || !icon.img);
};
tbb.populatePanel = function(doc, panel) {
panel.setAttribute('id', this.viewId);
var iframe = doc.createElement('iframe');
iframe.setAttribute('type', 'content');
panel.appendChild(iframe);
var toPx = function(pixels) {
return pixels.toString() + 'px';
};
var resizeTimer = null;
var resizePopupDelayed = function(attempts) {
if ( resizeTimer !== null ) {
return;
}
// Sanity check
attempts = (attempts || 0) + 1;
if ( attempts > 1/*000*/ ) {
console.error('uBlock0> resizePopupDelayed: giving up after too many attempts');
return;
}
resizeTimer = vAPI.setTimeout(resizePopup, 10, attempts);
};
var resizePopup = function(attempts) {
resizeTimer = null;
var body = iframe.contentDocument.body;
panel.parentNode.style.maxWidth = 'none';
// https://github.com/gorhill/uMatrix/issues/362
panel.parentNode.style.opacity = '1';
// https://github.com/chrisaljoudi/uBlock/issues/730
// Voodoo programming: this recipe works
var clientHeight = body.clientHeight;
iframe.style.height = toPx(clientHeight);
panel.style.height = toPx(clientHeight + panel.boxObject.height - panel.clientHeight);
var clientWidth = body.clientWidth;
iframe.style.width = toPx(clientWidth);
panel.style.width = toPx(clientWidth + panel.boxObject.width - panel.clientWidth);
if ( iframe.clientHeight !== body.clientHeight || iframe.clientWidth !== body.clientWidth ) {
resizePopupDelayed(attempts);
}
};
var onPopupReady = function() {
var win = this.contentWindow;
if ( !win || win.location.host !== location.host ) {
return;
}
if ( typeof tbb.onBeforePopupReady === 'function' ) {
tbb.onBeforePopupReady.call(this);
}
new win.MutationObserver(resizePopupDelayed).observe(win.document.body, {
attributes: true,
characterData: true,
subtree: true
});
resizePopupDelayed();
};
iframe.addEventListener('load', onPopupReady, true);
};
})();
/******************************************************************************/
// Firefox 35 and less: use legacy toolbar button.
(function() {
var tbb = vAPI.toolbarButton;
if ( tbb.init !== null ) {
return;
}
var CustomizableUI = null;
var forceLegacyToolbarButton = vAPI.localStorage.getBool('forceLegacyToolbarButton');
if ( !forceLegacyToolbarButton ) {
try {
CustomizableUI = Cu.import('resource:///modules/CustomizableUI.jsm', null).CustomizableUI;
} catch (ex) {
}
}
if (
CustomizableUI !== null &&
Services.vc.compare(Services.appinfo.platformVersion, '36.0') >= 0
) {
return;
}
tbb.codePath = 'legacy';
tbb.id = 'uBlock0-legacy-button'; // NOTE: must match legacy-toolbar-button.css
tbb.viewId = tbb.id + '-panel';
var styleSheetUri = null;
var createToolbarButton = function(window) {
var document = window.document;
var toolbarButton = document.createElement('toolbarbutton');
toolbarButton.setAttribute('id', tbb.id);
// type = panel would be more accurate, but doesn't look as good
toolbarButton.setAttribute('type', 'menu');
toolbarButton.setAttribute('removable', 'true');
toolbarButton.setAttribute('class', 'toolbarbutton-1 chromeclass-toolbar-additional');
toolbarButton.setAttribute('label', tbb.label);
toolbarButton.setAttribute('tooltiptext', tbb.label);
var toolbarButtonPanel = document.createElement('panel');
// NOTE: Setting level to parent breaks the popup for PaleMoon under
// linux (mouse pointer misaligned with content). For some reason.
// toolbarButtonPanel.setAttribute('level', 'parent');
tbb.populatePanel(document, toolbarButtonPanel);
toolbarButtonPanel.addEventListener('popupshowing', tbb.onViewShowing);
toolbarButtonPanel.addEventListener('popuphiding', tbb.onViewHiding);
toolbarButton.appendChild(toolbarButtonPanel);
return toolbarButton;
};
var addLegacyToolbarButton = function(window) {
// uBO's stylesheet lazily added.
if ( styleSheetUri === null ) {
var sss = Cc['@mozilla.org/content/style-sheet-service;1']
.getService(Ci.nsIStyleSheetService);
styleSheetUri = Services.io.newURI(vAPI.getURL('css/legacy-toolbar-button.css'), null, null);
// Register global so it works in all windows, including palette
if ( !sss.sheetRegistered(styleSheetUri, sss.AUTHOR_SHEET) ) {
sss.loadAndRegisterSheet(styleSheetUri, sss.AUTHOR_SHEET);
}
}
var document = window.document;
// https://github.com/gorhill/uMatrix/issues/357
// Already installed?
if ( document.getElementById(tbb.id) !== null ) {
return;
}
var toolbox = document.getElementById('navigator-toolbox') ||
document.getElementById('mail-toolbox');
if ( toolbox === null ) {
return;
}
var toolbarButton = createToolbarButton(window);
// https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XUL/toolbarpalette
var palette = toolbox.palette;
if ( palette && palette.querySelector('#' + tbb.id) === null ) {
palette.appendChild(toolbarButton);
}
// Find the place to put the button.
// Pale Moon: `toolbox.externalToolbars` can be undefined. Seen while
// testing popup test number 3:
// http://raymondhill.net/ublock/popup.html
var toolbars = toolbox.externalToolbars ? toolbox.externalToolbars.slice() : [];
for ( var child of toolbox.children ) {
if ( child.localName === 'toolbar' ) {
toolbars.push(child);
}
}
for ( var toolbar of toolbars ) {
var currentsetString = toolbar.getAttribute('currentset');
if ( !currentsetString ) {
continue;
}
var currentset = currentsetString.split(/\s*,\s*/);
var index = currentset.indexOf(tbb.id);
if ( index === -1 ) {
continue;
}
// This can occur with Pale Moon:
// "TypeError: toolbar.insertItem is not a function"
if ( typeof toolbar.insertItem !== 'function' ) {
continue;
}
// Found our button on this toolbar - but where on it?
var before = null;
for ( var i = index + 1; i < currentset.length; i++ ) {
before = toolbar.querySelector('[id="' + currentset[i] + '"]');
if ( before !== null ) {
break;
}
}
// https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XUL/Method/insertItem
toolbar.insertItem(tbb.id, before);
break;
}
// https://github.com/gorhill/uBlock/issues/763
// We are done if our toolbar button is already installed in one of the
// toolbar.
if ( palette !== null && toolbarButton.parentElement !== palette ) {
return;
}
// No button yet so give it a default location. If forcing the button,
// just put in in the palette rather than on any specific toolbar (who
// knows what toolbars will be available or visible!)
var navbar = document.getElementById('nav-bar');
if ( navbar !== null && !vAPI.localStorage.getBool('legacyToolbarButtonAdded') ) {
// https://github.com/gorhill/uBlock/issues/264
// Find a child customizable palette, if any.
navbar = navbar.querySelector('.customization-target') || navbar;
navbar.appendChild(toolbarButton);
navbar.setAttribute('currentset', navbar.currentSet);
document.persist(navbar.id, 'currentset');
vAPI.localStorage.setBool('legacyToolbarButtonAdded', 'true');
}
};
var canAddLegacyToolbarButton = function(window) {
var document = window.document;
if (
!document ||
document.readyState !== 'complete' ||
document.getElementById('nav-bar') === null
) {
return false;
}
var toolbox = document.getElementById('navigator-toolbox') ||
document.getElementById('mail-toolbox');
return toolbox !== null && !!toolbox.palette;
};
var onPopupCloseRequested = function({target}) {
var document = target.ownerDocument;
if ( !document ) {
return;
}
var toolbarButtonPanel = document.getElementById(tbb.viewId);
if ( toolbarButtonPanel === null ) {
return;
}
// `hidePopup` reported as not existing while testing legacy button
// on FF 41.0.2.
// https://bugzilla.mozilla.org/show_bug.cgi?id=1151796
if ( typeof toolbarButtonPanel.hidePopup === 'function' ) {
toolbarButtonPanel.hidePopup();
}
};
var shutdown = function() {
for ( var win of winWatcher.getWindows() ) {
var toolbarButton = win.document.getElementById(tbb.id);
if ( toolbarButton ) {
toolbarButton.parentNode.removeChild(toolbarButton);
}
}
vAPI.messaging.globalMessageManager.removeMessageListener(
location.host + ':closePopup',
onPopupCloseRequested
);
if ( styleSheetUri !== null ) {
var sss = Cc['@mozilla.org/content/style-sheet-service;1']
.getService(Ci.nsIStyleSheetService);
if ( sss.sheetRegistered(styleSheetUri, sss.AUTHOR_SHEET) ) {
sss.unregisterSheet(styleSheetUri, sss.AUTHOR_SHEET);
}
styleSheetUri = null;
}
};
tbb.attachToNewWindow = function(win) {
deferUntil(
canAddLegacyToolbarButton.bind(null, win),
addLegacyToolbarButton.bind(null, win)
);
};
tbb.init = function() {
vAPI.messaging.globalMessageManager.addMessageListener(
location.host + ':closePopup',
onPopupCloseRequested
);
cleanupTasks.push(shutdown);
};
})();
/******************************************************************************/
// Firefox Australis >= 36.
(function() {
var tbb = vAPI.toolbarButton;
if ( tbb.init !== null ) {
return;
}
if ( Services.vc.compare(Services.appinfo.platformVersion, '36.0') < 0 ) {
return null;
}
if ( vAPI.localStorage.getBool('forceLegacyToolbarButton') ) {
return null;
}
var CustomizableUI = null;
try {
CustomizableUI = Cu.import('resource:///modules/CustomizableUI.jsm', null).CustomizableUI;
} catch (ex) {
}
if ( CustomizableUI === null ) {
return null;
}
tbb.codePath = 'australis';
tbb.CustomizableUI = CustomizableUI;
tbb.defaultArea = CustomizableUI.AREA_NAVBAR;
var CUIEvents = {};
var badgeCSSRules = [
'background: #666',
'color: #fff'
].join(';');
var updateBadgeStyle = function() {
for ( var win of winWatcher.getWindows() ) {
var button = win.document.getElementById(tbb.id);
if ( button === null ) {
continue;
}
var badge = button.ownerDocument.getAnonymousElementByAttribute(
button,
'class',
'toolbarbutton-badge'
);
if ( !badge ) {
continue;
}
badge.style.cssText = badgeCSSRules;
}
};
var updateBadge = function() {
var wId = tbb.id;
var buttonInPanel = CustomizableUI.getWidget(wId).areaType === CustomizableUI.TYPE_MENU_PANEL;
for ( var win of winWatcher.getWindows() ) {
var button = win.document.getElementById(wId);
if ( button === null ) {
continue;
}
if ( buttonInPanel ) {
button.classList.remove('badged-button');
continue;
}
button.classList.add('badged-button');
}
if ( buttonInPanel ) {
return;
}
// Anonymous elements need some time to be reachable
vAPI.setTimeout(updateBadgeStyle, 250);
}.bind(CUIEvents);
// https://developer.mozilla.org/en-US/docs/Mozilla/JavaScript_code_modules/CustomizableUI.jsm#Listeners
CUIEvents.onCustomizeEnd = updateBadge;
CUIEvents.onWidgetAdded = updateBadge;
CUIEvents.onWidgetUnderflow = updateBadge;
var onPopupCloseRequested = function({target}) {
if ( typeof tbb.closePopup === 'function' ) {
tbb.closePopup(target);
}
};
var shutdown = function() {
for ( var win of winWatcher.getWindows() ) {
var panel = win.document.getElementById(tbb.viewId);
if ( panel !== null && panel.parentNode !== null ) {
panel.parentNode.removeChild(panel);
}
win.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindowUtils)
.removeSheet(styleURI, 1);
}
CustomizableUI.removeListener(CUIEvents);
CustomizableUI.destroyWidget(tbb.id);
vAPI.messaging.globalMessageManager.removeMessageListener(
location.host + ':closePopup',
onPopupCloseRequested
);
};
var styleURI = null;
tbb.onBeforeCreated = function(doc) {
var panel = doc.createElement('panelview');
this.populatePanel(doc, panel);
doc.getElementById('PanelUI-multiView').appendChild(panel);
doc.defaultView.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindowUtils)
.loadSheet(styleURI, 1);
};
tbb.onCreated = function(button) {
button.setAttribute('badge', '');
vAPI.setTimeout(updateBadge, 250);
};
tbb.onBeforePopupReady = function() {
// https://github.com/gorhill/uBlock/issues/83
// Add `portrait` class if width is constrained.
try {
this.contentDocument.body.classList.toggle(
'portrait',
CustomizableUI.getWidget(tbb.id).areaType === CustomizableUI.TYPE_MENU_PANEL
);
} catch (ex) {
/* noop */
}
};
tbb.closePopup = function(tabBrowser) {
CustomizableUI.hidePanelForNode(
tabBrowser.ownerDocument.getElementById(tbb.viewId)
);
};
tbb.init = function() {
vAPI.messaging.globalMessageManager.addMessageListener(
location.host + ':closePopup',
onPopupCloseRequested
);
CustomizableUI.addListener(CUIEvents);
var style = [
'#' + this.id + '.off {',
'list-style-image: url(',
vAPI.getURL('img/browsericons/icon16-off.svg'),
');',
'}',
'#' + this.id + ' {',
'list-style-image: url(',
vAPI.getURL('img/browsericons/icon16.svg'),
');',
'}',
'#' + this.viewId + ',',
'#' + this.viewId + ' > iframe {',
'width: 160px;',
'height: 290px;',
'overflow: hidden !important;',
'}'
];
styleURI = Services.io.newURI(
'data:text/css,' + encodeURIComponent(style.join('')),
null,
null
);
CustomizableUI.createWidget(this);
cleanupTasks.push(shutdown);
};
})();
/******************************************************************************/
// No toolbar button.
(function() {
// Just to ensure the number of cleanup tasks is as expected: toolbar
// button code is one single cleanup task regardless of platform.
if ( vAPI.toolbarButton.init === null ) {
cleanupTasks.push(function(){});
}
})();
/******************************************************************************/
if ( vAPI.toolbarButton.init !== null ) {
vAPI.toolbarButton.init();
}
/******************************************************************************/
/******************************************************************************/
vAPI.contextMenu = (function() {
var clientCallback = null;
var clientEntries = [];
var contextMap = {
frame: 'inFrame',
link: 'onLink',
image: 'onImage',
audio: 'onAudio',
video: 'onVideo',
editable: 'onEditableArea'
};
var onCommand = function() {
var gContextMenu = getOwnerWindow(this).gContextMenu;
var details = {
menuItemId: this.id
};
if ( gContextMenu.inFrame ) {
details.tagName = 'iframe';
// Probably won't work with e10s
details.frameUrl = gContextMenu.focusedWindow && gContextMenu.focusedWindow.location.href || '';
} else if ( gContextMenu.onImage ) {
details.tagName = 'img';
details.srcUrl = gContextMenu.mediaURL;
} else if ( gContextMenu.onAudio ) {
details.tagName = 'audio';
details.srcUrl = gContextMenu.mediaURL;
} else if ( gContextMenu.onVideo ) {
details.tagName = 'video';
details.srcUrl = gContextMenu.mediaURL;
} else if ( gContextMenu.onLink ) {
details.tagName = 'a';
details.linkUrl = gContextMenu.linkURL;
}
clientCallback(details, {
id: tabWatcher.tabIdFromTarget(gContextMenu.browser),
url: gContextMenu.browser.currentURI.asciiSpec
});
};
var menuItemMatchesContext = function(contextMenu, clientEntry) {
if ( !clientEntry.contexts ) {
return false;
}
for ( var context of clientEntry.contexts ) {
if ( context === 'all' ) {
return true;
}
if (
contextMap.hasOwnProperty(context) &&
contextMenu[contextMap[context]]
) {
return true;
}
}
return false;
};
var onMenuShowing = function({target}) {
var doc = target.ownerDocument;
var gContextMenu = doc.defaultView.gContextMenu;
if ( !gContextMenu.browser ) {
return;
}
// https://github.com/chrisaljoudi/uBlock/issues/105
// TODO: Should the element picker works on any kind of pages?
var currentURI = gContextMenu.browser.currentURI,
isHTTP = currentURI.schemeIs('http') || currentURI.schemeIs('https'),
layoutChanged = false,
contextMenu = doc.getElementById('contentAreaContextMenu'),
newEntries = clientEntries,
oldMenuitems = contextMenu.querySelectorAll('[data-uBlock0="menuitem"]'),
newMenuitems = [],
n = Math.max(clientEntries.length, oldMenuitems.length),
menuitem, newEntry;
for ( var i = 0; i < n; i++ ) {
menuitem = oldMenuitems[i];
newEntry = newEntries[i];
if ( menuitem && !newEntry ) {
menuitem.parentNode.removeChild(menuitem);
menuitem.removeEventListener('command', onCommand);
menuitem = null;
layoutChanged = true;
} else if ( !menuitem && newEntry ) {
menuitem = doc.createElement('menuitem');
menuitem.setAttribute('data-uBlock0', 'menuitem');
menuitem.addEventListener('command', onCommand);
}
if ( !menuitem ) {
continue;
}
if ( menuitem.id !== newEntry.id ) {
menuitem.setAttribute('id', newEntry.id);
menuitem.setAttribute('label', newEntry.title);
layoutChanged = true;
}
menuitem.setAttribute('hidden', !isHTTP || !menuItemMatchesContext(gContextMenu, newEntry));
newMenuitems.push(menuitem);
}
// No changes?
if ( layoutChanged === false ) {
return;
}
// No entry: remove submenu if present.
var menu = contextMenu.querySelector('[data-uBlock0="menu"]');
if ( newMenuitems.length === 0 ) {
if ( menu !== null ) {
menu.parentNode.removeChild(menuitem);
}
return;
}
// Only one entry: no need for a submenu.
if ( newMenuitems.length === 1 ) {
if ( menu !== null ) {
menu.parentNode.removeChild(menu);
}
menuitem = newMenuitems[0];
menuitem.setAttribute('class', 'menuitem-iconic');
menuitem.setAttribute('image', vAPI.getURL('img/browsericons/icon16.svg'));
contextMenu.insertBefore(menuitem, doc.getElementById('inspect-separator'));
return;
}
// More than one entry: we need a submenu.
if ( menu === null ) {
menu = doc.createElement('menu');
menu.setAttribute('label', vAPI.app.name);
menu.setAttribute('data-uBlock0', 'menu');
menu.setAttribute('class', 'menu-iconic');
menu.setAttribute('image', vAPI.getURL('img/browsericons/icon16.svg'));
contextMenu.insertBefore(menu, doc.getElementById('inspect-separator'));
}
var menupopup = contextMenu.querySelector('[data-uBlock0="menupopup"]');
if ( menupopup === null ) {
menupopup = doc.createElement('menupopup');
menupopup.setAttribute('data-uBlock0', 'menupopup');
menu.appendChild(menupopup);
}
for ( i = 0; i < newMenuitems.length; i++ ) {
menuitem = newMenuitems[i];
menuitem.setAttribute('class', 'menuitem-non-iconic');
menuitem.removeAttribute('image');
menupopup.appendChild(menuitem);
}
};
// https://github.com/gorhill/uBlock/issues/906
// Be sure document.readyState is 'complete': it could happen at launch
// time that we are called by vAPI.contextMenu.create() directly before
// the environment is properly initialized.
var canRegister = function(win) {
return win && win.document.readyState === 'complete';
};
var register = function(window) {
if ( canRegister(window) !== true ) {
return;
}
var contextMenu = window.document.getElementById('contentAreaContextMenu');
if ( contextMenu === null ) {
return;
}
contextMenu.addEventListener('popupshowing', onMenuShowing);
};
var registerAsync = function(win) {
// TODO https://developer.mozilla.org/en-US/Add-ons/Firefox_for_Android/API/NativeWindow/contextmenus/add
// var nativeWindow = doc.defaultView.NativeWindow;
// contextId = nativeWindow.contextmenus.add(
// this.menuLabel,
// nativeWindow.contextmenus.linkOpenableContext,
// this.onCommand
// );
if ( vAPI.fennec ) {
return;
}
deferUntil(
canRegister.bind(null, win),
register.bind(null, win)
);
};
var unregister = function(win) {
// TODO
if ( vAPI.fennec ) {
return;
}
var contextMenu = win.document.getElementById('contentAreaContextMenu');
if ( contextMenu !== null ) {
contextMenu.removeEventListener('popupshowing', onMenuShowing);
}
var menuitems = win.document.querySelectorAll('[data-uBlock0]'),
menuitem;
for ( var i = 0; i < menuitems.length; i++ ) {
menuitem = menuitems[i];
menuitem.parentNode.removeChild(menuitem);
menuitem.removeEventListener('command', onCommand);
}
};
var setEntries = function(entries, callback) {
clientEntries = entries || [];
clientCallback = callback || null;
};
return {
onMustUpdate: function() {},
register: registerAsync,
unregister: unregister,
setEntries: setEntries
};
})();
/******************************************************************************/
/******************************************************************************/
var optionsObserver = (function() {
var addonId = 'uBlock0@raymondhill.net';
var commandHandler = function() {
switch ( this.id ) {
case 'showDashboardButton':
vAPI.tabs.open({ url: 'dashboard.html', index: -1 });
break;
case 'showNetworkLogButton':
vAPI.tabs.open({ url: 'logger-ui.html', index: -1 });
break;
default:
break;
}
};
var setupOptionsButton = function(doc, id) {
var button = doc.getElementById(id);
if ( button === null ) {
return;
}
button.addEventListener('command', commandHandler);
button.label = vAPI.i18n(id);
};
var setupOptionsButtons = function(doc) {
setupOptionsButton(doc, 'showDashboardButton');
setupOptionsButton(doc, 'showNetworkLogButton');
};
var observer = {
observe: function(doc, topic, id) {
if ( id !== addonId ) {
return;
}
setupOptionsButtons(doc);
}
};
// https://github.com/gorhill/uBlock/issues/948
// Older versions of Firefox can throw here when looking up `currentURI`.
var canInit = function() {
try {
var tabBrowser = tabWatcher.currentBrowser();
return tabBrowser &&
tabBrowser.currentURI &&
tabBrowser.currentURI.spec === 'about:addons' &&
tabBrowser.contentDocument &&
tabBrowser.contentDocument.readyState === 'complete';
} catch (ex) {
}
};
// Manually add the buttons if the `about:addons` page is already opened.
var init = function() {
if ( canInit() ) {
setupOptionsButtons(tabWatcher.currentBrowser().contentDocument);
}
};
var unregister = function() {
Services.obs.removeObserver(observer, 'addon-options-displayed');
};
var register = function() {
Services.obs.addObserver(observer, 'addon-options-displayed', false);
cleanupTasks.push(unregister);
deferUntil(canInit, init, { next: 463 });
};
return {
register: register,
unregister: unregister
};
})();
optionsObserver.register();
/******************************************************************************/
/******************************************************************************/
vAPI.lastError = function() {
return null;
};
/******************************************************************************/
// This is called only once, when everything has been loaded in memory after
// the extension was launched. It can be used to inject content scripts
// in already opened web pages, to remove whatever nuisance could make it to
// the web pages before uBlock was ready.
vAPI.onLoadAllCompleted = function() {
// TODO: vAPI shouldn't know about uBlock. Just like in uMatrix, uBlock
// should collect on its side all the opened tabs whenever it is ready.
var µb = µBlock;
var tabId;
for ( var browser of tabWatcher.browsers() ) {
tabId = tabWatcher.tabIdFromTarget(browser);
µb.tabContextManager.commit(tabId, browser.currentURI.asciiSpec);
µb.bindTabToPageStats(tabId);
}
// Inject special frame script, which sole purpose is to inject
// content scripts into *already* opened tabs. This allows to unclutter
// the main frame script.
vAPI.messaging
.globalMessageManager
.loadFrameScript(vAPI.getURL('frameScript0.js'), false);
};
/******************************************************************************/
/******************************************************************************/
// Likelihood is that we do not have to punycode: given punycode overhead,
// it's faster to check and skip than do it unconditionally all the time.
var punycodeHostname = punycode.toASCII;
var isNotASCII = /[^\x21-\x7F]/;
vAPI.punycodeHostname = function(hostname) {
return isNotASCII.test(hostname) ? punycodeHostname(hostname) : hostname;
};
vAPI.punycodeURL = function(url) {
if ( isNotASCII.test(url) ) {
return Services.io.newURI(url, null, null).asciiSpec;
}
return url;
};
/******************************************************************************/
/******************************************************************************/
// https://github.com/gorhill/uBlock/issues/531
// Storage area dedicated to admin settings. Read-only.
vAPI.adminStorage = {
getItem: function(key, callback) {
if ( typeof callback !== 'function' ) {
return;
}
callback(vAPI.localStorage.getItem(key));
}
};
/******************************************************************************/
/******************************************************************************/
vAPI.cloud = (function() {
var extensionBranchPath = 'extensions.' + location.host;
var cloudBranchPath = extensionBranchPath + '.cloudStorage';
// https://github.com/gorhill/uBlock/issues/80#issuecomment-132081658
// We must use get/setComplexValue in order to properly handle strings
// with unicode characters.
var iss = Ci.nsISupportsString;
var argstr = Components.classes['@mozilla.org/supports-string;1']
.createInstance(iss);
var options = {
defaultDeviceName: '',
deviceName: ''
};
// User-supplied device name.
try {
options.deviceName = Services.prefs
.getBranch(extensionBranchPath + '.')
.getComplexValue('deviceName', iss)
.data;
} catch(ex) {
}
var getDefaultDeviceName = function() {
var name = '';
try {
name = Services.prefs
.getBranch('services.sync.client.')
.getComplexValue('name', iss)
.data;
} catch(ex) {
}
return name || window.navigator.platform || window.navigator.oscpu;
};
var start = function(dataKeys) {
var extensionBranch = Services.prefs.getBranch(extensionBranchPath + '.');
var syncBranch = Services.prefs.getBranch('services.sync.prefs.sync.');
// Mark config entries as syncable
argstr.data = '';
var dataKey;
for ( var i = 0; i < dataKeys.length; i++ ) {
dataKey = dataKeys[i];
if ( extensionBranch.prefHasUserValue('cloudStorage.' + dataKey) === false ) {
extensionBranch.setComplexValue('cloudStorage.' + dataKey, iss, argstr);
}
syncBranch.setBoolPref(cloudBranchPath + '.' + dataKey, true);
}
};
var push = function(datakey, data, callback) {
var branch = Services.prefs.getBranch(cloudBranchPath + '.');
var bin = {
'source': options.deviceName || getDefaultDeviceName(),
'tstamp': Date.now(),
'data': data,
'size': 0
};
bin.size = JSON.stringify(bin).length;
argstr.data = JSON.stringify(bin);
branch.setComplexValue(datakey, iss, argstr);
if ( typeof callback === 'function' ) {
callback();
}
};
var pull = function(datakey, callback) {
var result = null;
var branch = Services.prefs.getBranch(cloudBranchPath + '.');
try {
var json = branch.getComplexValue(datakey, iss).data;
if ( typeof json === 'string' ) {
result = JSON.parse(json);
}
} catch(ex) {
}
callback(result);
};
var getOptions = function(callback) {
if ( typeof callback !== 'function' ) {
return;
}
options.defaultDeviceName = getDefaultDeviceName();
callback(options);
};
var setOptions = function(details, callback) {
if ( typeof details !== 'object' || details === null ) {
return;
}
var branch = Services.prefs.getBranch(extensionBranchPath + '.');
if ( typeof details.deviceName === 'string' ) {
argstr.data = details.deviceName;
branch.setComplexValue('deviceName', iss, argstr);
options.deviceName = details.deviceName;
}
getOptions(callback);
};
return {
start: start,
push: push,
pull: pull,
getOptions: getOptions,
setOptions: setOptions
};
})();
/******************************************************************************/
/******************************************************************************/
})();
/******************************************************************************/
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