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uBlock/platform/safari/vapi-background.js

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/*******************************************************************************
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/gorhill/uBlock
*/
/* global self, safari, SafariBrowserTab, µBlock */
// For background page
/******************************************************************************/
(function() {
"use strict";
var vAPI = self.vAPI = self.vAPI || {};
vAPI.isMainProcess = true;
vAPI.safari = true;
/******************************************************************************/
vAPI.app = {
name: "uBlock",
version: safari.extension.displayVersion
};
/******************************************************************************/
if(navigator.userAgent.indexOf("Safari/6") === -1) { // If we're not on at least Safari 8
var _open = XMLHttpRequest.prototype.open;
XMLHttpRequest.prototype.open = function(m, u) {
if(u.lastIndexOf("safari-extension:", 0) === 0) {
var i = u.length, seeDot = false;
while(i --) {
if(u[i] === ".") {
seeDot = true;
}
else if(u[i] === "/") {
break;
}
}
if(seeDot === false) {
throw 'InvalidAccessError'; // Avoid crash
return;
}
}
_open.apply(this, arguments);
};
}
/******************************************************************************/
vAPI.app.restart = function() {
µBlock.restart();
};
/******************************************************************************/
safari.extension.addContentScriptFromURL(vAPI.getURL("js/subscriber.js"), [
"https://*.adblockplus.org/*",
"https://*.adblockplus.me/*",
"https://www.fanboy.co.nz/*",
"http://*.adblockplus.org/*",
"http://*.adblockplus.me/*",
"http://www.fanboy.co.nz/*"
], [], true);
/******************************************************************************/
safari.extension.settings.addEventListener('change', function(e) {
if(e.key === 'open_prefs') {
vAPI.tabs.open({
url: 'dashboard.html',
active: true
});
}
}, false);
/******************************************************************************/
initStorageLib(); // Initialize storage library
/******************************************************************************/
var storageQuota = 104857600; // copied from Info.plist
localforage.config({
name: "ublock",
size: storageQuota,
storeName: "keyvaluepairs"
});
var oldSettings = safari.extension.settings; // To smoothly transition users
if(oldSettings.hasOwnProperty("version")) { // Old 'storage'!
for(var key in oldSettings) {
if(!oldSettings.hasOwnProperty(key) || key === "open_prefs") {
continue;
}
localforage.setItem(key, oldSettings[key]);
}
oldSettings.clear();
}
vAPI.storage = {
QUOTA_BYTES: storageQuota, // copied from Info.plist
get: function(keys, callback) {
if(typeof callback !== "function") {
return;
}
var result = {};
if(keys === null) {
localforage.iterate(function(value, key) {
if(typeof value === "string") {
result[key] = JSON.parse(value);
}
}, function() {
callback(result);
});
}
else if(typeof keys === "string") {
localforage.getItem(keys, function(err, value) {
if(typeof value === "string") {
result[keys] = JSON.parse(value);
}
callback(result);
});
}
else if(Array.isArray(keys)) {
var toSatisfy = keys.length, n = toSatisfy;
if(n === 0) {
callback(result);
return;
}
for(var i = 0; i < n; i++) {
var key = keys[i];
var func = function(err, value) {
toSatisfy--;
if(typeof value === "string") {
result[arguments.callee.myKey] = JSON.parse(value);
}
if(toSatisfy === 0) {
callback(result);
}
};
func.myKey = key;
localforage.getItem(key, func);
}
}
else if(typeof keys === "object") {
for(var key in keys) {
if(!keys.hasOwnProperty(key)) {
continue;
}
result[key] = keys[key];
}
localforage.iterate(function(value, key) {
if(!keys.hasOwnProperty(key)) return;
if(typeof value === "string") {
result[key] = JSON.parse(value);
}
}, function() {
callback(result);
});
}
},
set: function(details, callback) {
var toSatisfy = 0;
for(var key in details) {
if(!details.hasOwnProperty(key)) {
continue;
}
toSatisfy++;
}
for(var key in details) {
if(!details.hasOwnProperty(key)) {
continue;
}
localforage.setItem(key, JSON.stringify(details[key]), function() {
if(--toSatisfy === 0) {
callback && callback();
}
});
}
},
remove: function(keys) {
if(typeof keys === "string") {
keys = [keys];
}
for(var i = 0, n = keys.length; i < n; i++) {
localforage.removeItem(keys[i]);
}
},
clear: function(callback) {
localforage.clear(function() {
callback();
});
},
getBytesInUse: function(keys, callback) {
if(typeof callback !== "function") {
return;
}
var size = 0;
localforage.iterate(function(value, key) {
size += (value || "").length;
}, function() {
callback(size);
});
}
};
/******************************************************************************/
vAPI.tabs = {
stack: {},
stackId: 1
};
/******************************************************************************/
vAPI.isBehindTheSceneTabId = function(tabId) {
return tabId.toString() === this.noTabId;
};
vAPI.noTabId = '-1';
/******************************************************************************/
vAPI.tabs.registerListeners = function() {
safari.application.addEventListener("beforeNavigate", function(e) {
if(!vAPI.tabs.popupCandidate || !e.target || e.url === "about:blank") {
return;
}
var url = e.url,
tabId = vAPI.tabs.getTabId(e.target);
var details = {
targetURL: url,
targetTabId: tabId,
openerTabId: vAPI.tabs.popupCandidate
};
if(vAPI.tabs.onPopup(details)) {
e.preventDefault();
if(vAPI.tabs.stack[details.openerTabId]) {
vAPI.tabs.stack[details.openerTabId].activate();
}
}
}, true);
// onClosed handled in the main tab-close event
// onUpdated handled via monitoring the history.pushState on web-pages
// onPopup is handled in window.open on web-pages
};
/******************************************************************************/
vAPI.tabs.getTabId = function(tab) {
if(typeof tab.uBlockCachedID !== "undefined") {
return tab.uBlockCachedID;
}
for(var i in vAPI.tabs.stack) {
if(vAPI.tabs.stack[i] === tab) {
return (tab.uBlockCachedID = +i);
}
}
return -1;
};
/******************************************************************************/
vAPI.tabs.get = function(tabId, callback) {
var tab;
if(tabId === null) {
tab = safari.application.activeBrowserWindow.activeTab;
tabId = this.getTabId(tab);
} else {
tab = this.stack[tabId];
}
if(!tab) {
callback();
return;
}
callback({
id: tabId,
index: tab.browserWindow.tabs.indexOf(tab),
windowId: safari.application.browserWindows.indexOf(tab.browserWindow),
active: tab === tab.browserWindow.activeTab,
url: tab.url || "about:blank",
title: tab.title
});
};
/******************************************************************************/
// 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 curWin, tab;
if(details.select) {
tab = safari.application.browserWindows.some(function(win) {
var rgxHash = /#.*/;
// this is questionable
var url = details.url.replace(rgxHash, '');
for(var i = 0; i < win.tabs.length; i++) {
// Some tabs don't have a URL
if(win.tabs[i].url &&
win.tabs[i].url.replace(rgxHash, '') === url) {
win.tabs[i].activate();
return true;
}
}
});
if(tab) {
return;
}
}
if(details.active === undefined) {
details.active = true;
}
curWin = safari.application.activeBrowserWindow;
// it must be calculated before opening a new tab,
// otherwise the new tab will be the active tab here
if(details.index === -1) {
details.index = curWin.tabs.indexOf(curWin.activeTab) + 1;
}
tab = (details.tabId ? this.stack[details.tabId] : curWin.openTab(details.active ? 'foreground' : 'background'));
if(details.index !== undefined) {
curWin.insertTab(tab, details.index);
}
tab.url = details.url;
};
/******************************************************************************/
// 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 tab = this.stack[tabId];
if ( tab ) {
tab.url = targetURL;
}
};
/******************************************************************************/
vAPI.tabs.remove = function(tabIds) {
if(tabIds instanceof SafariBrowserTab) {
tabIds = this.getTabId(tabIds);
}
if(!Array.isArray(tabIds)) {
tabIds = [tabIds];
}
for(var i = 0; i < tabIds.length; i++) {
if(this.stack[tabIds[i]]) {
this.stack[tabIds[i]].close();
}
}
};
/******************************************************************************/
vAPI.tabs.reload = function(tabId) {
var tab = this.stack[tabId];
if(tab) {
tab.url = tab.url;
}
};
/******************************************************************************/
vAPI.tabs.injectScript = function(tabId, details, callback) {
var tab;
if(tabId) {
tab = this.stack[tabId];
} else {
tab = safari.application.activeBrowserWindow.activeTab;
}
if(details.file) {
var xhr = new XMLHttpRequest();
xhr.open('GET', details.file, true);
xhr.addEventListener("readystatechange", function() {
if(this.readyState === 4) {
details.code = xhr.responseText;
tab.page.dispatchMessage('broadcast', {
channelName: 'vAPI',
msg: {
cmd: 'injectScript',
details: details
}
});
if(typeof callback === 'function') {
setTimeout(callback, 13);
}
}
});
xhr.send();
}
};
/******************************************************************************/
// bind tabs to unique IDs
(function() {
var wins = safari.application.browserWindows,
i = wins.length,
j;
while(i --) {
j = wins[i].tabs.length;
while(j--) {
vAPI.tabs.stack[vAPI.tabs.stackId++] = wins[i].tabs[j];
}
}
})();
/******************************************************************************/
safari.application.addEventListener('open', function(e) {
// ignore windows
if(e.target instanceof SafariBrowserTab) {
vAPI.tabs.stack[vAPI.tabs.stackId++] = e.target;
}
}, true);
/******************************************************************************/
safari.application.addEventListener('close', function(e) {
// ignore windows
if(!(e.target instanceof SafariBrowserTab)) {
return;
}
var tabId = vAPI.tabs.getTabId(e.target);
if(tabId !== -1) {
// to not add another listener, put this here
// instead of vAPI.tabs.registerListeners
if(typeof vAPI.tabs.onClosed === 'function') {
vAPI.tabs.onClosed(tabId);
}
delete vAPI.tabIconState[tabId];
delete vAPI.tabs.stack[tabId];
}
}, true);
/******************************************************************************/
vAPI.toolbarItem = false;
safari.application.addEventListener("validate", function(event) {
if(vAPI.toolbarItem === event.target) {
return;
}
vAPI.toolbarItem = event.target;
}, true);
safari.application.addEventListener("activate", function(event) {
if(!(event.target instanceof SafariBrowserTab)) {
return;
}
vAPI.updateIcon(vAPI.toolbarItem);
}, true);
/******************************************************************************/
// reload the popup when it's opened
safari.application.addEventListener("popover", function(event) {
var w = event.target.contentWindow, body = w.document.body, child;
while(child = body.firstChild) {
body.removeChild(child);
}
w.location.reload();
}, true);
/******************************************************************************/
function TabIconState() {}
TabIconState.prototype.badge = 0;
TabIconState.prototype.img = "";
vAPI.tabIconState = { /*tabId: {badge: 0, img: suffix}*/ };
vAPI.updateIcon = function(icon) {
var tabId = vAPI.tabs.getTabId(icon.browserWindow.activeTab),
state = vAPI.tabIconState[tabId];
if(typeof state === "undefined") {
state = vAPI.tabIconState[tabId] = new TabIconState();
}
icon.badge = state.badge;
icon.image = vAPI.getURL("img/browsericons/safari-icon16" + state.img + ".png");
};
vAPI.setIcon = function(tabId, iconStatus, badge) {
var state = vAPI.tabIconState[tabId];
if(typeof state === "undefined") {
state = vAPI.tabIconState[tabId] = new TabIconState();
}
state.badge = badge || 0;
state.img = (iconStatus === "on" ? "" : "-off");
vAPI.updateIcon(vAPI.toolbarItem);
};
/******************************************************************************/
vAPI.messaging = {
listeners: {},
defaultHandler: null,
NOOPFUNC: function() {},
UNHANDLED: 'vAPI.messaging.notHandled'
};
/******************************************************************************/
vAPI.messaging.listen = function(listenerName, callback) {
this.listeners[listenerName] = callback;
};
/******************************************************************************/
var CallbackWrapper = function(request, port) {
// No need to bind every single time
this.callback = this.proxy.bind(this);
this.messaging = vAPI.messaging;
this.init(request, port);
};
CallbackWrapper.junkyard = [];
CallbackWrapper.factory = function(request, port) {
var wrapper = CallbackWrapper.junkyard.pop();
if(wrapper) {
wrapper.init(request, port);
return wrapper;
}
return new CallbackWrapper(request, port);
};
CallbackWrapper.prototype.init = function(request, port) {
this.request = request;
this.port = port;
};
CallbackWrapper.prototype.proxy = function(response) {
this.port.dispatchMessage(this.request.name, {
requestId: this.request.message.requestId,
channelName: this.request.message.channelName,
msg: response !== undefined ? response: null
});
this.port = this.request = null;
CallbackWrapper.junkyard.push(this);
};
vAPI.messaging.onMessage = function(request) {
var callback = vAPI.messaging.NOOPFUNC;
if(request.message.requestId !== undefined) {
callback = CallbackWrapper.factory(request, request.target.page).callback;
}
var sender = {
tab: {
id: vAPI.tabs.getTabId(request.target)
}
};
// Specific handler
var r = vAPI.messaging.UNHANDLED;
var listener = vAPI.messaging.listeners[request.message.channelName];
if(typeof listener === 'function') {
r = listener(request.message.msg, sender, callback);
}
if(r !== vAPI.messaging.UNHANDLED) {
return;
}
// Default handler
r = vAPI.messaging.defaultHandler(request.message.msg, sender, callback);
if(r !== vAPI.messaging.UNHANDLED) {
return;
}
console.error('µBlock> messaging > unknown request: %o', request.message);
// Unhandled:
// 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;
// the third parameter must stay false (bubbling), so later
// onBeforeRequest will use true (capturing), where we can invoke
// stopPropagation() (this way this.onMessage won't be fired)
safari.application.addEventListener('message', this.onMessage, false);
};
/******************************************************************************/
vAPI.messaging.broadcast = function(message) {
message = {
broadcast: true,
msg: message
};
for(var tabId in vAPI.tabs.stack) {
vAPI.tabs.stack[tabId].page.dispatchMessage('broadcast', message);
}
};
/******************************************************************************/
vAPI.net = {};
/******************************************************************************/
// Fast `contains`
Array.prototype.contains = function(a) {
var b = this.length;
while(b--) {
if(this[b] === a) {
return true;
}
}
return false;
};
/******************************************************************************/
vAPI.net.registerListeners = function() {
var µb = µBlock;
// Until Safari has more specific events, those are instead handled
// in the onBeforeRequestAdapter; clean them up so they're garbage-collected
vAPI.net.onBeforeSendHeaders = null;
vAPI.net.onHeadersReceived = null;
var onBeforeRequest = vAPI.net.onBeforeRequest,
onBeforeRequestClient = onBeforeRequest.callback,
blockableTypes = onBeforeRequest.types;
var onBeforeRequestAdapter = function(e) {
if(e.name !== "canLoad") {
return;
}
e.stopPropagation && e.stopPropagation();
if(e.message.type === "main_frame") {
vAPI.tabs.onNavigation({
url: e.message.url,
frameId: 0,
tabId: vAPI.tabs.getTabId(e.target)
});
e.message.hostname = µb.URI.hostnameFromURI(e.message.url);
e.message.tabId = vAPI.tabs.getTabId(e.target);
var blockVerdict = onBeforeRequestClient(e.message);
if(blockVerdict && blockVerdict.redirectUrl) {
e.target.url = blockVerdict.redirectUrl;
e.message = false;
}
else {
e.message = true;
}
return;
}
switch(e.message.type) {
case "popup":
vAPI.tabs.popupCandidate = vAPI.tabs.getTabId(e.target);
if(e.message.url === "about:blank") {
e.message = false;
return;
}
else {
e.message = !vAPI.tabs.onPopup({
targetURL: e.message.url,
targetTabId: 0,
openerTabId: vAPI.tabs.getTabId(e.target)
});
}
break;
case "popstate":
vAPI.tabs.onUpdated(vAPI.tabs.getTabId(e.target), {
url: e.message.url
}, {
url: e.message.url
});
break;
default:
e.message.hostname = µb.URI.hostnameFromURI(e.message.url);
e.message.tabId = vAPI.tabs.getTabId(e.target);
var blockVerdict = onBeforeRequestClient(e.message);
if(blockVerdict && blockVerdict.cancel) {
e.message = false;
return;
}
else {
e.message = true;
return;
}
}
return;
};
safari.application.addEventListener("message", onBeforeRequestAdapter, true);
};
/******************************************************************************/
vAPI.contextMenu = {
contextMap: {
frame: 'insideFrame',
link: 'linkHref',
image: 'srcUrl',
editable: 'editable'
}
};
/******************************************************************************/
vAPI.contextMenu.create = function(details, callback) {
var contexts = details.contexts;
var menuItemId = details.id;
var menuTitle = details.title;
if(Array.isArray(contexts) && contexts.length) {
contexts = contexts.indexOf('all') === -1 ? contexts : null;
} else {
// default in Chrome
contexts = ['page'];
}
this.onContextMenu = function(e) {
var uI = e.userInfo;
if(!uI || /^https?:\/\//i.test(uI.pageUrl) === false) {
return;
}
if(contexts) {
var invalidContext = true;
var ctxMap = vAPI.contextMenu.contextMap;
for(var i = 0; i < contexts.length; i++) {
var ctx = contexts[i];
if(ctx === 'audio' || ctx === 'video') {
if(uI[ctxMap['image']] && uI.tagName === ctx) {
invalidContext = false;
break;
}
} else if(uI[ctxMap[ctx]]) {
invalidContext = false;
break;
} else if(ctx === 'page') {
if(!(uI.insideFrame || uI.linkHref || uI.mediaType || uI.editable)) {
invalidContext = false;
break;
}
}
}
if(invalidContext) {
return;
}
}
e.contextMenu.appendContextMenuItem(menuItemId, menuTitle);
};
this.onContextMenuCmd = function(e) {
if(e.command === menuItemId) {
var tab = e.currentTarget.activeBrowserWindow.activeTab;
e.userInfo.menuItemId = menuItemId;
callback(e.userInfo, tab ? {
id: vAPI.tabs.getTabId(tab),
url: tab.url
} : undefined);
}
};
safari.application.addEventListener('contextmenu', this.onContextMenu);
safari.application.addEventListener('command', this.onContextMenuCmd);
};
/******************************************************************************/
vAPI.contextMenu.remove = function() {
safari.application.removeEventListener('contextmenu', this.onContextMenu);
safari.application.removeEventListener('command', this.onContextMenuCmd);
this.onContextMenu = null;
this.onContextMenuCmd = null;
};
/******************************************************************************/
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() {};
/******************************************************************************/
vAPI.punycodeHostname = function(hostname) {
return hostname;
};
vAPI.punycodeURL = function(url) {
return url;
};
/******************************************************************************/
function initStorageLib() {
/*!
localForage -- Offline Storage, Improved
Version 1.2.2
https://mozilla.github.io/localForage
(c) 2013-2015 Mozilla, Apache License 2.0
*/
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