mirror of
https://github.com/gorhill/uBlock.git
synced 2024-11-24 19:33:01 +01:00
526 lines
16 KiB
JavaScript
526 lines
16 KiB
JavaScript
/*******************************************************************************
|
|
|
|
uBlock Origin - a browser extension to block requests.
|
|
Copyright (C) 2014-2016 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
|
|
*/
|
|
|
|
/* global HTMLDocument, XMLDocument */
|
|
|
|
'use strict';
|
|
|
|
// For non background pages
|
|
|
|
/******************************************************************************/
|
|
|
|
(function(self) {
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// https://github.com/chrisaljoudi/uBlock/issues/464
|
|
if ( document instanceof HTMLDocument === false ) {
|
|
// https://github.com/chrisaljoudi/uBlock/issues/1528
|
|
// A XMLDocument can be a valid HTML document.
|
|
if (
|
|
document instanceof XMLDocument === false ||
|
|
document.createElement('div') instanceof HTMLDivElement === false
|
|
) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// https://github.com/gorhill/uBlock/issues/1124
|
|
// Looks like `contentType` is on track to be standardized:
|
|
// https://dom.spec.whatwg.org/#concept-document-content-type
|
|
// https://forums.lanik.us/viewtopic.php?f=64&t=31522
|
|
// Skip text/plain documents.
|
|
var contentType = document.contentType || '';
|
|
if ( /^image\/|^text\/plain/.test(contentType) ) {
|
|
return;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
var vAPI = self.vAPI = self.vAPI || {};
|
|
var chrome = self.chrome;
|
|
|
|
// https://github.com/chrisaljoudi/uBlock/issues/456
|
|
// Already injected?
|
|
if ( vAPI.sessionId ) {
|
|
return;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
// Support minimally working Set() for legacy Chromium.
|
|
|
|
if ( self.Set instanceof Function ) {
|
|
self.createSet = function() {
|
|
return new Set();
|
|
};
|
|
} else {
|
|
self.createSet = (function() {
|
|
//console.log('Polyfilling for ES6-like Set().');
|
|
var PrimitiveSet = function() {
|
|
this.clear();
|
|
};
|
|
PrimitiveSet.prototype = {
|
|
add: function(k) {
|
|
if ( this._set[k] === undefined ) {
|
|
this._set[k] = true;
|
|
this.size += 1;
|
|
}
|
|
return this;
|
|
},
|
|
clear: function() {
|
|
this._set = Object.create(null);
|
|
this.size = 0;
|
|
this._values = undefined;
|
|
this._i = undefined;
|
|
this.value = undefined;
|
|
this.done = true;
|
|
},
|
|
delete: function(k) {
|
|
if ( this._set[k] === undefined ) { return false; }
|
|
delete this._set[k];
|
|
this.size -= 1;
|
|
return true;
|
|
},
|
|
has: function(k) {
|
|
return this._set[k] !== undefined;
|
|
},
|
|
next: function() {
|
|
if ( this._i < this.size ) {
|
|
this.value = this._values[this._i++];
|
|
} else {
|
|
this._values = undefined;
|
|
this.value = undefined;
|
|
this.done = true;
|
|
}
|
|
return this;
|
|
},
|
|
polyfill: true,
|
|
values: function() {
|
|
this._values = Object.keys(this._set);
|
|
this._i = 0;
|
|
this.value = undefined;
|
|
this.done = false;
|
|
return this;
|
|
}
|
|
};
|
|
var ReferenceSet = function() {
|
|
this.clear();
|
|
};
|
|
ReferenceSet.prototype = {
|
|
add: function(k) {
|
|
if ( this._set.indexOf(k) === -1 ) {
|
|
this._set.push(k);
|
|
}
|
|
},
|
|
clear: function() {
|
|
this._set = [];
|
|
this._i = 0;
|
|
this.value = undefined;
|
|
this.done = true;
|
|
},
|
|
delete: function(k) {
|
|
var pos = this._set.indexOf(k);
|
|
if ( pos === -1 ) { return false; }
|
|
this._set.splice(pos, 1);
|
|
return true;
|
|
},
|
|
has: function(k) {
|
|
return this._set.indexOf(k) !== -1;
|
|
},
|
|
next: function() {
|
|
if ( this._i === this._set.length ) {
|
|
this.value = undefined;
|
|
this.done = true;
|
|
} else {
|
|
this.value = this._set[this._i];
|
|
this._i += 1;
|
|
}
|
|
return this;
|
|
},
|
|
polyfill: true,
|
|
values: function() {
|
|
this._i = 0;
|
|
this.done = false;
|
|
return this;
|
|
}
|
|
};
|
|
Object.defineProperty(ReferenceSet.prototype, 'size', {
|
|
get: function() { return this._set.length; }
|
|
});
|
|
return function(type) {
|
|
return type === 'object' ? new ReferenceSet() : new PrimitiveSet();
|
|
};
|
|
})();
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
var referenceCounter = 0;
|
|
|
|
vAPI.lock = function() {
|
|
referenceCounter += 1;
|
|
};
|
|
|
|
vAPI.unlock = function() {
|
|
referenceCounter -= 1;
|
|
if ( referenceCounter === 0 ) {
|
|
// Eventually there will be code here to flush the javascript code
|
|
// from this file out of memory when it ends up unused.
|
|
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.executionCost = {
|
|
start: function(){},
|
|
stop: function(){}
|
|
};
|
|
/*
|
|
vAPI.executionCost = {
|
|
tcost: 0,
|
|
tstart: 0,
|
|
nstart: 0,
|
|
level: 1,
|
|
start: function() {
|
|
if ( this.nstart === 0 ) {
|
|
this.tstart = window.performance.now();
|
|
}
|
|
this.nstart += 1;
|
|
},
|
|
stop: function(mark) {
|
|
this.nstart -= 1;
|
|
if ( this.nstart !== 0 ) {
|
|
return;
|
|
}
|
|
var tcost = window.performance.now() - this.tstart;
|
|
this.tcost += tcost;
|
|
if ( mark === undefined ) {
|
|
return;
|
|
}
|
|
var top = window === window.top;
|
|
if ( !top && this.level < 2 ) {
|
|
return;
|
|
}
|
|
var context = window === window.top ? ' top' : 'frame';
|
|
var percent = this.tcost / window.performance.now() * 100;
|
|
console.log(
|
|
'uBO cost (%s): %sms/%s%% (%s: %sms)',
|
|
context,
|
|
this.tcost.toFixed(1),
|
|
percent.toFixed(1),
|
|
mark,
|
|
tcost.toFixed(2)
|
|
);
|
|
}
|
|
};
|
|
*/
|
|
vAPI.executionCost.start();
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.randomToken = function() {
|
|
return String.fromCharCode(Date.now() % 26 + 97) +
|
|
Math.floor(Math.random() * 982451653 + 982451653).toString(36);
|
|
};
|
|
|
|
vAPI.sessionId = vAPI.randomToken();
|
|
vAPI.chrome = true;
|
|
vAPI.setTimeout = vAPI.setTimeout || self.setTimeout.bind(self);
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.shutdown = {
|
|
jobs: [],
|
|
add: function(job) {
|
|
this.jobs.push(job);
|
|
},
|
|
exec: function() {
|
|
var job;
|
|
while ( (job = this.jobs.pop()) ) {
|
|
job();
|
|
}
|
|
},
|
|
remove: function(job) {
|
|
var pos;
|
|
while ( (pos = this.jobs.indexOf(job)) !== -1 ) {
|
|
this.jobs.splice(pos, 1);
|
|
}
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
vAPI.messaging = {
|
|
port: null,
|
|
portTimer: null,
|
|
portTimerDelay: 10000,
|
|
channels: Object.create(null),
|
|
channelCount: 0,
|
|
pending: Object.create(null),
|
|
pendingCount: 0,
|
|
auxProcessId: 1,
|
|
shuttingDown: false,
|
|
|
|
shutdown: function() {
|
|
this.shuttingDown = true;
|
|
this.destroyPort();
|
|
},
|
|
|
|
disconnectListener: function() {
|
|
this.port = null;
|
|
vAPI.shutdown.exec();
|
|
},
|
|
disconnectListenerCallback: null,
|
|
|
|
messageListener: function(details) {
|
|
if ( !details ) {
|
|
return;
|
|
}
|
|
|
|
// Sent to all channels
|
|
if ( details.broadcast === true && !details.channelName ) {
|
|
for ( var channelName in this.channels ) {
|
|
this.sendToChannelListeners(channelName, details.msg);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Response to specific message previously sent
|
|
if ( details.auxProcessId ) {
|
|
var listener = this.pending[details.auxProcessId];
|
|
delete this.pending[details.auxProcessId];
|
|
delete details.auxProcessId; // TODO: why?
|
|
if ( listener ) {
|
|
this.pendingCount -= 1;
|
|
listener(details.msg);
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Sent to a specific channel
|
|
var response = this.sendToChannelListeners(details.channelName, details.msg);
|
|
|
|
// Respond back if required
|
|
if ( details.mainProcessId === undefined ) {
|
|
return;
|
|
}
|
|
var port = this.connect();
|
|
if ( port !== null ) {
|
|
port.postMessage({
|
|
mainProcessId: details.mainProcessId,
|
|
msg: response
|
|
});
|
|
}
|
|
},
|
|
messageListenerCallback: null,
|
|
|
|
portPoller: function() {
|
|
this.portTimer = null;
|
|
if ( this.port !== null ) {
|
|
if ( this.channelCount !== 0 || this.pendingCount !== 0 ) {
|
|
this.portTimer = vAPI.setTimeout(this.portPollerCallback, this.portTimerDelay);
|
|
this.portTimerDelay = Math.min(this.portTimerDelay * 2, 60 * 60 * 1000);
|
|
return;
|
|
}
|
|
}
|
|
this.destroyPort();
|
|
},
|
|
portPollerCallback: null,
|
|
|
|
destroyPort: function() {
|
|
if ( this.portTimer !== null ) {
|
|
clearTimeout(this.portTimer);
|
|
this.portTimer = null;
|
|
}
|
|
var port = this.port;
|
|
if ( port !== null ) {
|
|
port.disconnect();
|
|
port.onMessage.removeListener(this.messageListenerCallback);
|
|
port.onDisconnect.removeListener(this.disconnectListenerCallback);
|
|
this.port = null;
|
|
}
|
|
if ( this.channelCount !== 0 ) {
|
|
this.channels = Object.create(null);
|
|
this.channelCount = 0;
|
|
}
|
|
// service pending callbacks
|
|
if ( this.pendingCount !== 0 ) {
|
|
var pending = this.pending, callback;
|
|
this.pending = Object.create(null);
|
|
this.pendingCount = 0;
|
|
for ( var auxId in pending ) {
|
|
callback = pending[auxId];
|
|
if ( typeof callback === 'function' ) {
|
|
callback(null);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
createPort: function() {
|
|
if ( this.shuttingDown ) {
|
|
return null;
|
|
}
|
|
if ( this.messageListenerCallback === null ) {
|
|
this.messageListenerCallback = this.messageListener.bind(this);
|
|
this.disconnectListenerCallback = this.disconnectListener.bind(this);
|
|
this.portPollerCallback = this.portPoller.bind(this);
|
|
}
|
|
try {
|
|
this.port = chrome.runtime.connect({name: vAPI.sessionId}) || null;
|
|
} catch (ex) {
|
|
this.port = null;
|
|
}
|
|
if ( this.port !== null ) {
|
|
this.port.onMessage.addListener(this.messageListenerCallback);
|
|
this.port.onDisconnect.addListener(this.disconnectListenerCallback);
|
|
}
|
|
this.portTimerDelay = 10000;
|
|
if ( this.portTimer === null ) {
|
|
this.portTimer = vAPI.setTimeout(this.portPollerCallback, this.portTimerDelay);
|
|
}
|
|
return this.port;
|
|
},
|
|
|
|
connect: function() {
|
|
return this.port !== null ? this.port : this.createPort();
|
|
},
|
|
|
|
send: function(channelName, message, callback) {
|
|
this.sendTo(channelName, message, undefined, undefined, callback);
|
|
},
|
|
|
|
sendTo: function(channelName, message, toTabId, toChannel, callback) {
|
|
// Too large a gap between the last request and the last response means
|
|
// the main process is no longer reachable: memory leaks and bad
|
|
// performance become a risk -- especially for long-lived, dynamic
|
|
// pages. Guard against this.
|
|
if ( this.pendingCount > 25 ) {
|
|
vAPI.shutdown.exec();
|
|
}
|
|
var port = this.connect();
|
|
if ( port === null ) {
|
|
if ( typeof callback === 'function' ) {
|
|
callback();
|
|
}
|
|
return;
|
|
}
|
|
var auxProcessId;
|
|
if ( callback ) {
|
|
auxProcessId = this.auxProcessId++;
|
|
this.pending[auxProcessId] = callback;
|
|
this.pendingCount += 1;
|
|
}
|
|
port.postMessage({
|
|
channelName: channelName,
|
|
auxProcessId: auxProcessId,
|
|
toTabId: toTabId,
|
|
toChannel: toChannel,
|
|
msg: message
|
|
});
|
|
},
|
|
|
|
addChannelListener: function(channelName, callback) {
|
|
if ( typeof callback !== 'function' ) {
|
|
return;
|
|
}
|
|
var listeners = this.channels[channelName];
|
|
if ( listeners !== undefined && listeners.indexOf(callback) !== -1 ) {
|
|
console.error('Duplicate listener on channel "%s"', channelName);
|
|
return;
|
|
}
|
|
if ( listeners === undefined ) {
|
|
this.channels[channelName] = [callback];
|
|
this.channelCount += 1;
|
|
} else {
|
|
listeners.push(callback);
|
|
}
|
|
this.connect();
|
|
},
|
|
|
|
removeChannelListener: function(channelName, callback) {
|
|
if ( typeof callback !== 'function' ) {
|
|
return;
|
|
}
|
|
var listeners = this.channels[channelName];
|
|
if ( listeners === undefined ) {
|
|
return;
|
|
}
|
|
var pos = this.listeners.indexOf(callback);
|
|
if ( pos === -1 ) {
|
|
console.error('Listener not found on channel "%s"', channelName);
|
|
return;
|
|
}
|
|
listeners.splice(pos, 1);
|
|
if ( listeners.length === 0 ) {
|
|
delete this.channels[channelName];
|
|
this.channelCount -= 1;
|
|
}
|
|
},
|
|
|
|
removeAllChannelListeners: function(channelName) {
|
|
var listeners = this.channels[channelName];
|
|
if ( listeners === undefined ) {
|
|
return;
|
|
}
|
|
delete this.channels[channelName];
|
|
this.channelCount -= 1;
|
|
},
|
|
|
|
sendToChannelListeners: function(channelName, msg) {
|
|
var listeners = this.channels[channelName];
|
|
if ( listeners === undefined ) {
|
|
return;
|
|
}
|
|
var response;
|
|
for ( var i = 0, n = listeners.length; i < n; i++ ) {
|
|
response = listeners[i](msg);
|
|
if ( response !== undefined ) {
|
|
break;
|
|
}
|
|
}
|
|
return response;
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
vAPI.shutdown.add(function() {
|
|
vAPI.messaging.shutdown();
|
|
delete window.vAPI;
|
|
});
|
|
|
|
// https://www.youtube.com/watch?v=rT5zCHn0tsg
|
|
// https://www.youtube.com/watch?v=E-jS4e3zacI
|
|
|
|
vAPI.executionCost.stop('vapi-client.js');
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
})(this);
|
|
|
|
/******************************************************************************/
|