mirror of https://github.com/gorhill/uBlock.git
325 lines
11 KiB
JavaScript
325 lines
11 KiB
JavaScript
/*******************************************************************************
|
|
|
|
uBlock - a browser extension to block requests.
|
|
Copyright (C) 2015 The uBlock 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/chrisaljoudi/uBlock
|
|
*/
|
|
/******************************************************************************/
|
|
// For non background pages
|
|
|
|
(function(self) {
|
|
'use strict';
|
|
var vAPI = self.vAPI = self.vAPI || {};
|
|
if(vAPI.vapiClientInjected) {
|
|
return;
|
|
}
|
|
var safari;
|
|
if(typeof self.safari === "undefined") {
|
|
safari = self.top.safari;
|
|
}
|
|
else {
|
|
safari = self.safari;
|
|
}
|
|
vAPI.vapiClientInjected = true;
|
|
vAPI.safari = true;
|
|
vAPI.sessionId = String.fromCharCode(Date.now() % 25 + 97) +
|
|
Math.random().toString(36).slice(2);
|
|
/******************************************************************************/
|
|
var messagingConnector = function(response) {
|
|
if(!response) {
|
|
return;
|
|
}
|
|
var channels = vAPI.messaging.channels;
|
|
var channel, listener;
|
|
if(response.broadcast === true && !response.channelName) {
|
|
for(channel in channels) {
|
|
if(channels.hasOwnProperty(channel) === false) {
|
|
continue;
|
|
}
|
|
listener = channels[channel].listener;
|
|
if(typeof listener === 'function') {
|
|
listener(response.msg);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
if(response.requestId) {
|
|
listener = vAPI.messaging.listeners[response.requestId];
|
|
delete vAPI.messaging.listeners[response.requestId];
|
|
delete response.requestId;
|
|
}
|
|
if(!listener) {
|
|
channel = channels[response.channelName];
|
|
listener = channel && channel.listener;
|
|
}
|
|
if(typeof listener === 'function') {
|
|
listener(response.msg);
|
|
}
|
|
};
|
|
/******************************************************************************/
|
|
// Relevant?
|
|
// https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/MessagesandProxies/MessagesandProxies.html#//apple_ref/doc/uid/TP40009977-CH14-SW12
|
|
vAPI.messaging = {
|
|
channels: {},
|
|
listeners: {},
|
|
requestId: 1,
|
|
setup: function() {
|
|
this.connector = function(msg) {
|
|
// messages from the background script are sent to every frame,
|
|
// so we need to check the vAPI.sessionId to accept only
|
|
// what is meant for the current context
|
|
if(msg.name === vAPI.sessionId || msg.name === 'broadcast') {
|
|
messagingConnector(msg.message);
|
|
}
|
|
};
|
|
safari.self.addEventListener('message', this.connector, false);
|
|
this.channels['vAPI'] = {
|
|
listener: function(msg) {
|
|
if(msg.cmd === 'injectScript' && msg.details.code) {
|
|
Function(msg.details.code).call(self);
|
|
}
|
|
}
|
|
};
|
|
},
|
|
close: function() {
|
|
if(this.connector) {
|
|
safari.self.removeEventListener('message', this.connector, false);
|
|
this.connector = null;
|
|
this.channels = {};
|
|
this.listeners = {};
|
|
}
|
|
},
|
|
channel: function(channelName, callback) {
|
|
if(!channelName) {
|
|
return;
|
|
}
|
|
this.channels[channelName] = {
|
|
channelName: channelName,
|
|
listener: typeof callback === 'function' ? callback : null,
|
|
send: function(message, callback) {
|
|
if(!vAPI.messaging.connector) {
|
|
vAPI.messaging.setup();
|
|
}
|
|
message = {
|
|
channelName: this.channelName,
|
|
msg: message
|
|
};
|
|
if(callback) {
|
|
message.requestId = vAPI.messaging.requestId++;
|
|
vAPI.messaging.listeners[message.requestId] = callback;
|
|
}
|
|
// popover content doesn't know messaging...
|
|
if(safari.extension.globalPage) {
|
|
if(!safari.self.visible) {
|
|
return;
|
|
}
|
|
safari.extension.globalPage.contentWindow.vAPI.messaging.onMessage({
|
|
name: vAPI.sessionId,
|
|
message: message,
|
|
target: {
|
|
page: {
|
|
dispatchMessage: function(name, msg) {
|
|
messagingConnector(msg);
|
|
}
|
|
}
|
|
}
|
|
});
|
|
} else {
|
|
safari.self.tab.dispatchMessage(vAPI.sessionId, message);
|
|
}
|
|
},
|
|
close: function() {
|
|
delete vAPI.messaging.channels[this.channelName];
|
|
}
|
|
};
|
|
return this.channels[channelName];
|
|
}
|
|
};
|
|
|
|
// The following code should run only in content pages
|
|
if(location.protocol === "safari-extension:" || typeof safari !== "object") {
|
|
return;
|
|
}
|
|
|
|
var frameId = window === window.top ? 0 : Date.now() % 1E5;
|
|
var parentFrameId = (frameId ? 0 : -1);
|
|
|
|
// Helper event to message background,
|
|
// and helper anchor element
|
|
var beforeLoadEvent,
|
|
legacyMode = false,
|
|
linkHelper = document.createElement("a");
|
|
|
|
try {
|
|
beforeLoadEvent = new Event("beforeload")
|
|
}
|
|
catch(ex) {
|
|
legacyMode = true;
|
|
beforeLoadEvent = document.createEvent("Event");
|
|
beforeLoadEvent.initEvent("beforeload");
|
|
}
|
|
|
|
// Inform that we've navigated
|
|
if(frameId === 0) {
|
|
safari.self.tab.canLoad(beforeLoadEvent, {
|
|
url: location.href,
|
|
type: "main_frame"
|
|
});
|
|
}
|
|
var nodeTypes = {
|
|
"frame": "sub_frame",
|
|
"iframe": "sub_frame",
|
|
"script": "script",
|
|
"img": "image",
|
|
"input": "image",
|
|
"object": "object",
|
|
"embed": "object",
|
|
"link": "stylesheet"
|
|
};
|
|
var shouldBlockDetailedRequest = function(details) {
|
|
linkHelper.href = details.url;
|
|
details.url = linkHelper.href;
|
|
details.frameId = frameId;
|
|
details.parentFrameId = parentFrameId;
|
|
details.timeStamp = Date.now();
|
|
return !(safari.self.tab.canLoad(beforeLoadEvent, details));
|
|
};
|
|
var onBeforeLoad = function(e) {
|
|
if(firstMutation !== false) {
|
|
firstMutation();
|
|
}
|
|
linkHelper.href = e.url;
|
|
if(linkHelper.protocol.charCodeAt(0) !== 104) { // h = 104
|
|
return;
|
|
}
|
|
var details = {
|
|
url: linkHelper.href,
|
|
type: nodeTypes[e.target.nodeName.toLowerCase()] || "other",
|
|
// tabId is determined in the background script
|
|
frameId: frameId,
|
|
parentFrameId: parentFrameId,
|
|
timeStamp: Date.now()
|
|
};
|
|
var response = safari.self.tab.canLoad(e, details);
|
|
if(response === false) {
|
|
e.preventDefault();
|
|
}
|
|
};
|
|
document.addEventListener("beforeload", onBeforeLoad, true);
|
|
|
|
// Block popups, intercept XHRs
|
|
var firstMutation = function() {
|
|
document.removeEventListener("DOMContentLoaded", firstMutation, true);
|
|
firstMutation = false;
|
|
document.addEventListener(vAPI.sessionId, function(e) {
|
|
if(shouldBlockDetailedRequest(e.detail)) {
|
|
e.detail.url = false;
|
|
}
|
|
}, true);
|
|
var tmpJS = document.createElement("script");
|
|
var tmpScript = "\
|
|
(function() {\
|
|
var block = function(u, t) {" +
|
|
(legacyMode ?
|
|
"var e = document.createEvent('CustomEvent');\
|
|
e.initCustomEvent('" + vAPI.sessionId + "', false, false, {url: u, type: t});"
|
|
: "var e = new CustomEvent('" + vAPI.sessionId + "', {bubbles: false, detail: {url: u, type: t}});"
|
|
) +
|
|
"document.dispatchEvent(e);\
|
|
return e.detail.url === false;\
|
|
},\
|
|
wo = open,\
|
|
xo = XMLHttpRequest.prototype.open,\
|
|
img = Image;\
|
|
Image = function() {\
|
|
var x = new img();\
|
|
try{\
|
|
Object.defineProperty(x, 'src', {\
|
|
get: function() {\
|
|
return x.getAttribute('src');\
|
|
},\
|
|
set: function(val) {\
|
|
x.setAttribute('src', block(val, 'image') ? 'data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=' : val);\
|
|
}\
|
|
});\
|
|
}\catch(e){}\
|
|
return x;\
|
|
};\
|
|
open = function(u) {\
|
|
if(block(u, 'popup')) return {}; else return wo.apply(this, arguments);\
|
|
};\
|
|
XMLHttpRequest.prototype.open = function(m, u) {\
|
|
if(block(u, 'xmlhttprequest')) {throw 'InvalidAccessError'; return;}\
|
|
else {xo.apply(this, arguments); return;}\
|
|
};";
|
|
if(frameId === 0) {
|
|
tmpScript += "\
|
|
var pS = history.pushState,\
|
|
rS = history.replaceState,\
|
|
onpopstate = function(e) {\
|
|
if(!e || e.state !== null) {\
|
|
block(location.href, 'popstate');\
|
|
}\
|
|
};\
|
|
window.addEventListener('popstate', onpopstate, true);\
|
|
history.pushState = function() {\
|
|
var r = pS.apply(this, arguments);\
|
|
onpopstate();\
|
|
return r;\
|
|
};\
|
|
history.replaceState = function() {\
|
|
var r = rS.apply(this, arguments);\
|
|
onpopstate();\
|
|
return r;\
|
|
};";
|
|
}
|
|
tmpScript += "})();";
|
|
tmpJS.textContent = tmpScript;
|
|
document.documentElement.removeChild(document.documentElement.appendChild(tmpJS));
|
|
};
|
|
document.addEventListener("DOMContentLoaded", firstMutation, true);
|
|
|
|
var onContextMenu = function(e) {
|
|
var target = e.target;
|
|
var tagName = target.tagName.toLowerCase();
|
|
var details = {
|
|
tagName: tagName,
|
|
pageUrl: location.href,
|
|
insideFrame: window !== window.top
|
|
};
|
|
details.editable = (tagName === "textarea" || tagName === "input");
|
|
if(target.hasOwnProperty("checked")) {
|
|
details.checked = target.checked;
|
|
}
|
|
if(tagName === "a") {
|
|
details.linkUrl = target.href;
|
|
}
|
|
if(target.hasOwnProperty("src")) {
|
|
details.srcUrl = target.src;
|
|
if(tagName === "img") {
|
|
details.mediaType = "image";
|
|
} else if(tagName === "video" || tagName === "audio") {
|
|
details.mediaType = tagName;
|
|
}
|
|
}
|
|
safari.self.tab.setContextMenuEventUserInfo(e, details);
|
|
};
|
|
self.addEventListener("contextmenu", onContextMenu, true);
|
|
})(this);
|
|
|
|
/******************************************************************************/
|