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uBlock/platform/firefox/vapi-background.js
buttercookie42 3ea58979d5 Support back button navigation on Android (#1917) 
When opening a new tab in Fennec, we should pass the ID of the current tab as parentId, so that pressing the back button afterwards closes the new tab and returns to the original tab instead of just closing Firefox.
2016-08-20 07:52:16 -04:00

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JavaScript
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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
/******************************************************************************/
(function() {
'use strict';
/******************************************************************************/
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;
}
var result = this.onBeforeRequest({
frameId: details.frameId,
parentFrameId: details.parentFrameId,
tabId: details.tabId,
type: type,
url: URI.asciiSpec
});
if ( !result || typeof result !== 'object' ) {
return false;
}
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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