some rearrangements
This commit is contained in:
Marc Wäckerlin
@@ -37,870 +37,1026 @@
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// 1 2 3 4 5 6 7 8
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// 45678901234567890123456789012345678901234567890123456789012345678901234567890
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function SafeChatClient(success, notice, error) {
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function SafeChat() {
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/// Cache Client's Key from local Strorage
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var k = null;
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function browserSupported() {
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window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB
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window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction
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window.IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange
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return window.indexedDB && window.crypto.getRandomValues && Storage
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/// Create UID from a name by appending an E-Mail
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function uid(name) {
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return name+' <'+name+'@'+hostname+'>'
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}
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/// Get User Key
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/** @internal key ist cached in k
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@return key */
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function key() {
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if (k) return k
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if (typeof localStorage.key == 'undefined') return null
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return k = openpgp.key.readArmored(localStorage.key)
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/// @class Crypto cryptographic functions
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/** @param view is of class SafeChat.View */
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function Crypto(view) {
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/// cache client's key from local strorage
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var k = null
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/// detect hosstname, default to safechat.ch
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var hostname = window.location.hostname!='localhost'?window.location.hostname:'safechat.ch'
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/// get user key
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/** @internal key ist cached in k
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@return key */
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function key() {
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if (k) return k
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if (typeof localStorage.key == 'undefined') return null
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return k = openpgp.key.readArmored(localStorage.key)
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}
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/// get own user name
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/** get user name as user id of first public key */
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function user() {
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if (k || key()) return k.pub.keys[0].getUserIds()[0]
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return null
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}
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/// create New User
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function createuser(user, email, pwd) {
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view.notice("generating keys")
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openpgp.generateKey({
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numBits: 4096,
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userIds: [{name: user, email: email}],
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passphrase: pwd
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}).then(function(keyPair) {
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view.success("keys generated")
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localStorage.key = keyPair.privateKeyArmored
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k = keyPair.key
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}).catch(function(e) {
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console.log(e)
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view.fatal("generating key pairs failed")
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})
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}
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/// open private key with password
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/** @return @c true if password matches */
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function password(pwd) {
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return (k || keys()) && k.keys[0].decrypt(pwd)
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}
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/// Encrypt Message
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function encrypt(message, targetkeys, done, failed) {
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if (!k) return false
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openpgp.encrypt({
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publicKeys: targetkeys.keys.concat(k.keys),
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privateKeys: k,
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data: message,
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armor: false
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}).then(done).else(failed)
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return true
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}
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/// Decrypt Message
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function decrypt(message, sourcekeys, done, failed) {
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if (!k) return false
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openpgp.decrypt({
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privateKeys: k.keys,
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publicKeys: sourcekeys.keys,
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message: message
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}).then(done).else(failed)
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return true
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}
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}
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/// Get Own User Name
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/** Get user name as user id of first public key */
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function uid() {
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if (k || key()) return k.pub.keys[0].getUserIds()[0]
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return null
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/// database that stores in indexed db
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function DataBase() {
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function user(name, key) {
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}
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}
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/// Create New User
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function createuser(user, email, pwd) {
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/// manage local copy of users
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function Users() {
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var users = new Map()
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function add(usr) {
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if (!users[usr.name])
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users[usr.name].valid = true
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else
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users[usr.name].valid = users[usr.name].valid && users[usr.name].key == usr.key
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users[usr.name].key = usr.key
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users[usr.name].online = usr.online
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}
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}
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/// manage local copy of messages
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function Messages() {
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var messages = {};
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function add() {
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}
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}
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/// @class Communication client socket communication
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/** @param view is of class SafeChat.View */
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function Communication(controller) {
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var socket = io.connect()
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function broadcast(signal, data) {
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console.log("<=snd "+signal)
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socket.broadcast.emit(signal, data)
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}
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function emit(signal, data) {
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console.log("<-snd "+signal)
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socket.emit(signal, data)
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}
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socket
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.on("login", controller.loggedin)
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.on("fail", controller.fail)
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.on("user", controller.user)
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.on("users", controller.users)
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.on("message", controller.message)
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.on("messages", controller.messages)
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.io
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.on("connect", controller.connected)
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.on("reconnect", controller.connected)
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.on("disconnect", controller.disconnected)
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.on("error", controller.disconnected)
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}
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/// @class View provides the glue to the GUI in the index.ejs file
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/** View provides the following callbacks:
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- status updates:
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- @c notice(msg) to display information
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- @c warning(msg)
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- @c error(msg)
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- @c fatal(msg) */
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function View() {
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var nexttimer = null
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/// Padding for numbers in dates
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function pad(n) {
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return n<10 ? '0'+n : n
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}
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/// escape text to show in html @see htmldec
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function htmlenc(html) {
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return $('<div/>').text(html).html()
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}
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/// decode html encoded text @see htmlenc
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function htmldec(data) {
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return $('<div/>').html(data).text()
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}
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/// alert user accoustically or by vibration
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/** alert user, e.g. that a new message has arrived. */
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function beep() {
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if (navigator.vibrate) navigator.vibrate(1000)
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(new Audio("sounds/beep.mp3")).play()
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}
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/// show fatal error
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/** something completely failed, abort
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@param msg */
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function fatal(msg) {
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if (nexttimer) clearTimeout(nexttimer)
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if (msg) {
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error(msg)
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$('#fatal-msg').html(msg)
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}
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show('fatal')
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}
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/// show error messsage
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/** shows an error message and logs to console.
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@param data (optional) The error can be a string or any structure.
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Strings are shown to the user, structures are logged only.
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@param next (optional) next function to call */
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function error(data, next) {
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if (nexttimer) clearTimeout(nexttimer)
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$("#status").hide()
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$("#status").addClass("error")
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$("#status").removeClass("notice")
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$("#status").removeClass("success")
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if (data) {
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if (typeof data == 'string') {
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$("#status").html(data)
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console.log("error: "+data)
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} else {
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$("#status").html('error')
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console.log("error: "+JSON.stringify(data))
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}
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} else {
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$("#status").html('error')
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console.log("error")
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}
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$("#status").show()
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if (next) nexttimer = setTimeout(function() {
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nexttimer = null
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next()
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}, 5000)
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}
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/// show notice messsage
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/** shows an notice message and logs to console.
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@param text (optional) The data is a string. */
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function notice(text) {
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$("#status").hide()
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$("#status").addClass("notice")
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$("#status").removeClass("error")
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$("#status").removeClass("success")
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if (text) {
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$("#status").html(text)
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console.log("notice: "+text)
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} else {
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$("#status").html('')
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console.log("notice")
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}
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$("#status").show()
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}
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/// show success messsage
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/** shows an success message and logs to console.
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@param text (optional) The data is a string. */
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function success(text) {
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$("#status").hide()
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$("#status").addClass("success")
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$("#status").removeClass("error")
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$("#status").removeClass("notice")
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if (text) {
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$("#status").html(text)
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console.log("success: "+text)
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} else {
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$("#status").html('')
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console.log("success")
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}
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$("#status").show()
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}
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/// show a specific screen given the element id
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/** @param id html id to be shown.
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@param msg (optional) the success message text */
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function show(id, msg) {
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console.log("state: "+id)
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if (msg) success(msg) else $("#status").hide()
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$("#main").children(":not(#"+id+")").hide()
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$("#main #"+id).show()
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$("#main #"+id+" form input:first-child").focus()
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}
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/// show server connected status
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function connected() {
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console.log("server connected")
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$("#connectionstatus #bad").hide()
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$("#connectionstatus #good").show()
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success("server connected")
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}
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/// show server disconnected status
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function disconnected() {
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console.log("server disconnected")
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$("#connectionstatus #good").hide()
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$("#connectionstatus #bad").show()
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error("server disconnected", true)
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}
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/// toggle menu display
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function togglemenu() {
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$("#menu").toggle()
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}
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function checkFeature(id, query) {
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if (query) $('#'+id+':before')
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.css('color', 'green')
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.css('content', '✔')
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else $('#'+id+':before')
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.css('color', 'red')
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.css('content', '✘')
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if (query) $('#'+id)
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.css('color', 'green')
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.css('text-decoration', 'line-through')
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else $('#'+id)
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.css('color', 'red')
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.css('text-decoration', 'none')
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}
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function checkFeatures() {
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$('ul.features').css('list-style-type', 'none')
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checkFeature("localstorage", Storage)
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checkFeature("indexeddb", window.indexedDB)
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checkFeature("randomvalues", window.crypto.getRandomValues)
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checkFeature("vibrate", navigator.vibrate)
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checkFeature("filereader", window.FileReader)
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}
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function DataTransfer() {
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var reboottimer = null
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var data = new DataTransfer()
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/// download profile backup
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function backup() {
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var download = document.createElement('a')
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download.href = 'data:attachment/text,'+encodeURI(JSON.stringify(localStorage))
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download.target = '_blank'
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var now = new Date()
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download.download =
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pad(now.getFullYear())+pad(now.getMonth()+1)+pad(now.getDate())+
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"-"+userid()+"@"+hostname+".bak"
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var clickEvent = new MouseEvent("click", {
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"view": window,
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"bubbles": true,
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"cancelable": false
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})
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download.dispatchEvent(clickEvent)
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togglemenu()
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}
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/// Upload Profile Backup
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function restore(evt) {
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for (var i=0, f; f=evt.target.files[i]; ++i) {
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var file = f
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var reader = new FileReader()
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reader.onload = function(evt) {
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if (evt.target.error) return error("error reading file")
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if (evt.target.readyState==0) return notice("waiting for data …")
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if (evt.target.readyState==1) return notice("loading data …")
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var parsed=JSON.parse(evt.target.result)
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togglemenu()
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localStorage.pubkey = parsed.pubkey
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localStorage.privkey = parsed.privkey
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success("backup is restored")
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console.log("reboot after restore in 2s")
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if (!reboottimer && reboot) reboottimer = setTimeout(function() {
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reboottimer = null
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}, 2000)
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}
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reader.readAsText(file)
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}
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}
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if (!window.FileReader) {
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$('restore-menu-item').hide()
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error("your browser does not support file upload")
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}
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}
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}
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/// @class Controller defines the programm flow
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function Controller(view) {
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var db = new Database()
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var communication = new Communication(this)
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var users = new Users()
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function fail(msg) {
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console.log('rcv-> fail('+msg+')')
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error(msg)
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}
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function loggedin() {
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console.log("rcv-> login")
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success("login successful")
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chat()
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}
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function user(usr) {
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console.log("rcv-> user")
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if (usr.exits) users.add(usr)
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}
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function users() {
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console.log("rcv-> users")
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}
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function message(msg) {
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console.log("rcv-> message")
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}
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function messages(msgs) {
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console.log("rcv-> messages")
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}
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this.connected = view.connected
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this.reconnect = view.connected
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this.disconnect = view.disconnected
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this.error = view.disconnected
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function login() {
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}
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function user(usr) {
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if (usr.exists) db.adduser
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}
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function initBrowser() {
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window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB
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window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction
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window.IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange
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navigator.vibrate = navigator.vibrate || navigator.webkitVibrate || navigator.mozVibrate || navigator.msVibrate
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return window.indexedDB && window.crypto.getRandomValues && Storage
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}
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function run() {
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}
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function start() {
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view.reboot = run
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var compatible = initBrowser()
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view.checkFeatures()
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if (!compatible)
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view.fatal("your browser is not supported")
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else
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run()
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}
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}
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//==============================================================================
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//------------------------------------------------------------------------------
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return new Controller(new View())
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}
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var filecontent = new Array() ///< temporary storage for attachments
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var reboottimer = null
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function connectionstatus() {
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if (socket.connected) connected() else disconnected()
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}
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/// Configure local groups
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||||
/** … */
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||||
function groups() {
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}
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||||
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||||
/// Check if password is set and matches the repeated password
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||||
/** Checks if both passwords are identical and valid and gives
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feedback to the user.
|
||||
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Called when user edits the password fields.
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Sets @ref username and checks @ref password - if both are well
|
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defined, enables the submit button.
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||||
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@param pwd The password.
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@param pwd2 The repeated password. */
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||||
function checkpwd(pwd, pwd2) {
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||||
$("#register").submit(function(event) {
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return false
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})
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if (pwd==pwd2) password=pwd
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else password=null
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if (!password||password.length<1) password=null
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$("#createuser").prop("disabled", !(username && password))
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if (password) {
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if (username) success("user is ready to be created")
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else notice("password matches, please chose a valid user name")
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||||
} else {
|
||||
if (username) notice("passwords don't match")
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||||
else if ($('#user').val()) notice("user name is already in use")
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||||
else notice("please chose a user name")
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||||
|
||||
}
|
||||
}
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||||
|
||||
/// Checks if the receiver of a message exists on server.
|
||||
/** Calls checknewuser.php on server and enables the message submit
|
||||
button if the receiver of the message exists on the server. */
|
||||
function checkpartner(user) {
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||||
$("#chat").submit(function(event) {
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||||
return false
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||||
})
|
||||
emit("user", uid(user))
|
||||
}
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||||
|
||||
/// Create Local Public-/Private-Key Pair
|
||||
/** Called if user has not yet his keys, just generates a new key pair. */
|
||||
function createkeypair(user, pwd) {
|
||||
notice("generating keys")
|
||||
openpgp.generateKey({
|
||||
numBits: 4096,
|
||||
userIds: [{name: user, email: email}],
|
||||
userIds: [{name: user, email: user+'@'+hostname}],
|
||||
passphrase: pwd
|
||||
}).then(function(keyPair) {
|
||||
success("keys generated")
|
||||
localStorage.key = keyPair.privateKeyArmored
|
||||
k = keyPair.key
|
||||
localStorage.pubkey = keyPair.publicKeyArmored
|
||||
localStorage.privkey = keyPair.privateKeyArmored
|
||||
login()
|
||||
}).catch(function(e) {
|
||||
console.log(e)
|
||||
error("generating key pairs failed")
|
||||
})
|
||||
}
|
||||
|
||||
function password(pwd) {
|
||||
return (k || keys()) && k.keys[0].decrypt(pwd)
|
||||
}
|
||||
|
||||
/// Encrypt Message
|
||||
function encrypt(targetkeys, message, done, failed) {
|
||||
if (!k) return false
|
||||
openpgp.encrypt({
|
||||
publicKeys: targets.keys.concat(k.keys),
|
||||
privateKeys: k,
|
||||
data: message,
|
||||
armor: false})
|
||||
.then(done)
|
||||
.else(failed)
|
||||
return true
|
||||
}
|
||||
|
||||
/// Decrypt Message
|
||||
function decrypt(message) {
|
||||
if (!k) return false
|
||||
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
var password = null; ///< password, only stored temporary, until reload
|
||||
var username = null; ///< username, only used during registration
|
||||
var filecontent = new Array(); ///< temporary storage for attachments
|
||||
var socket = io.connect();
|
||||
var hostname = window.location.hostname!='localhost'?window.location.hostname:'safechat.ch';
|
||||
|
||||
/// Padding for numbers in dates
|
||||
function pad(n) {
|
||||
return n<10 ? '0'+n : n
|
||||
}
|
||||
|
||||
function uid(name) {
|
||||
return name+' <'+name+'@'+hostname+'>';
|
||||
}
|
||||
|
||||
/// Convert number of bytes to readable text
|
||||
function size(num) {
|
||||
if (num>0.6*1024) {
|
||||
if (num>0.6*1024*1024) {
|
||||
if (num>0.6*1024*1024*1024) {
|
||||
if (num>0.6*1024*1024*1024*1024) {
|
||||
return Math.round(num/1024/1024/1024/1024)+"TB";
|
||||
} else {
|
||||
return Math.round(num/1024/1024/1024)+"GB";
|
||||
}
|
||||
/// Get Own Public Key
|
||||
/** @return public key object */
|
||||
function publicKey() {
|
||||
if (typeof localStorage.pubkey == 'undefined') {
|
||||
if (typeof localStorage.pubKey == 'undefined') {
|
||||
return null
|
||||
} else {
|
||||
return Math.round(num/1024/1024)+"MB";
|
||||
localStorage.pubkey = localStorage.pubKey
|
||||
localStorage.removeItem(pubKey)
|
||||
}
|
||||
} else {
|
||||
return Math.round(num/1024)+"kB";
|
||||
}
|
||||
} else {
|
||||
return num+"B";
|
||||
return openpgp.key.readArmored(localStorage.pubkey)
|
||||
}
|
||||
}
|
||||
|
||||
var reboottimer = null;
|
||||
/// Show error messsage
|
||||
/** Fades in an error message and logs to console.
|
||||
@param data (optional) The error can be a string or any structure.
|
||||
Strings are shown to the user, structures are logged only.
|
||||
@param stay (optional) If not given as @c true, reloads page after 5s. */
|
||||
function error(data, stay) {
|
||||
$("#status").hide();
|
||||
$("#status").addClass("error")
|
||||
$("#status").removeClass("notice")
|
||||
$("#status").removeClass("success")
|
||||
if (data) {
|
||||
if (typeof data == 'string') {
|
||||
$("#status").html(data);
|
||||
console.log("error: "+data);
|
||||
} else {
|
||||
$("#status").html('unknown error: '+JSON.stringify(data));
|
||||
console.log("error: "+JSON.stringify(data));
|
||||
}
|
||||
} else {
|
||||
$("#status").html('error');
|
||||
console.log("error");
|
||||
}
|
||||
$("#status").show();
|
||||
if (!stay) {
|
||||
console.log("reboot in 5s");
|
||||
console.log((new Error('stacktrace')).stack);
|
||||
if (!reboottimer) reboottimer = setTimeout(function() {
|
||||
reboottimer = null;
|
||||
start();
|
||||
}, 5000);
|
||||
}
|
||||
}
|
||||
|
||||
/// Show notice messsage
|
||||
/** Fades in an notice message and logs to console.
|
||||
@param text (optional) The data is a string. */
|
||||
function notice(text) {
|
||||
$("#status").hide()
|
||||
$("#status").addClass("notice")
|
||||
$("#status").removeClass("error")
|
||||
$("#status").removeClass("success")
|
||||
if (text) {
|
||||
$("#status").html(text);
|
||||
console.log("notice: "+text);
|
||||
} else {
|
||||
$("#status").html('');
|
||||
console.log("notice");
|
||||
}
|
||||
$("#status").show();
|
||||
}
|
||||
|
||||
/// Show notice messsage
|
||||
/** Fades in an success message and logs to console.
|
||||
@param text (optional) The data is a string. */
|
||||
function success(text) {
|
||||
$("#status").hide();
|
||||
$("#status").addClass("success")
|
||||
$("#status").removeClass("error")
|
||||
$("#status").removeClass("notice")
|
||||
if (text) {
|
||||
$("#status").html(text);
|
||||
console.log("success: "+text);
|
||||
} else {
|
||||
$("#status").html('');
|
||||
console.log("success");
|
||||
}
|
||||
$("#status").show();
|
||||
}
|
||||
|
||||
/// Show status message in the main screen area
|
||||
/** @param id HTML id to be shown.
|
||||
@param msg The success message text */
|
||||
function status(id, msg) {
|
||||
console.log("state: "+id);
|
||||
if (msg) success(msg); else $("#status").hide();
|
||||
$("#main").children(":not(#"+id+")").hide();
|
||||
$("#main #"+id).show();
|
||||
$("#main #"+id+" form input:first-child").focus();
|
||||
}
|
||||
|
||||
function emit(signal, data) {
|
||||
console.log("<-snd "+signal);
|
||||
socket.emit(signal, data);
|
||||
}
|
||||
|
||||
function connected() {
|
||||
console.log("server connected");
|
||||
$("#connectionstatus #bad").hide();
|
||||
$("#connectionstatus #good").show();
|
||||
success("server connected");
|
||||
}
|
||||
|
||||
function disconnected() {
|
||||
console.log("server disconnected");
|
||||
$("#connectionstatus #good").hide();
|
||||
$("#connectionstatus #bad").show();
|
||||
error("server disconnected", true);
|
||||
}
|
||||
|
||||
function connectionstatus() {
|
||||
if (socket.connected) connected(); else disconnected();
|
||||
}
|
||||
|
||||
function htmlenc(html) {
|
||||
return $('<div/>').text(html).html();
|
||||
}
|
||||
|
||||
function htmldec(data) {
|
||||
return $('<div/>').html(data).text();
|
||||
}
|
||||
|
||||
/// Alert user
|
||||
/** Alert user, e.g. that a new message has arrived. */
|
||||
function beep(user) {
|
||||
if (user) success("message from "+htmlenc(user)+" received");
|
||||
navigator.vibrate =
|
||||
navigator.vibrate || navigator.webkitVibrate || navigator.mozVibrate || navigator.msVibrate;
|
||||
if (navigator.vibrate) {
|
||||
// vibration API supported
|
||||
navigator.vibrate(1000);
|
||||
}
|
||||
(new Audio("sounds/A-Tone-His_Self-1266414414.mp3")).play();
|
||||
}
|
||||
|
||||
/// Toggle Menu Display
|
||||
function togglemenu() {
|
||||
$("#menu").toggle();
|
||||
}
|
||||
|
||||
/// Download Profile Backup
|
||||
function backup() {
|
||||
var download = document.createElement('a');
|
||||
download.href = 'data:attachment/text,'+encodeURI(JSON.stringify(localStorage));
|
||||
download.target = '_blank';
|
||||
var now = new Date();
|
||||
download.download =
|
||||
pad(now.getFullYear())+pad(now.getMonth()+1)+pad(now.getDate())+
|
||||
"-"+userid()+"@"+hostname+".bak";
|
||||
var clickEvent = new MouseEvent("click", {
|
||||
"view": window,
|
||||
"bubbles": true,
|
||||
"cancelable": false
|
||||
});
|
||||
download.dispatchEvent(clickEvent);
|
||||
togglemenu();
|
||||
}
|
||||
|
||||
/// Upload Profile Backup
|
||||
function restore(evt) {
|
||||
if (!window.FileReader)
|
||||
return error("your browser does not support file upload", true);
|
||||
for (var i=0, f; f=evt.target.files[i]; ++i) {
|
||||
var file = f;
|
||||
var reader = new FileReader();
|
||||
reader.onload = function(evt) {
|
||||
if (evt.target.error) return error("error reading file", true);
|
||||
if (evt.target.readyState==0) return notice("waiting for data …");
|
||||
if (evt.target.readyState==1) return notice("loading data …");
|
||||
var parsed=JSON.parse(evt.target.result);
|
||||
togglemenu();
|
||||
localStorage.pubkey = parsed.pubkey;
|
||||
localStorage.privkey = parsed.privkey;
|
||||
success("backup is restored");
|
||||
console.log("reboot after restore in 2s");
|
||||
if (!reboottimer) reboottimer = setTimeout(function() {
|
||||
reboottimer = null;
|
||||
start();
|
||||
}, 2000);
|
||||
}
|
||||
reader.readAsText(file);
|
||||
}
|
||||
}
|
||||
|
||||
/// Configure local groups
|
||||
/** … */
|
||||
function groups() {
|
||||
}
|
||||
|
||||
/// Check if password is set and matches the repeated password
|
||||
/** Checks if both passwords are identical and valid and gives
|
||||
feedback to the user.
|
||||
|
||||
Called when user edits the password fields.
|
||||
|
||||
Sets @ref username and checks @ref password - if both are well
|
||||
defined, enables the submit button.
|
||||
|
||||
@param pwd The password.
|
||||
@param pwd2 The repeated password. */
|
||||
function checkpwd(pwd, pwd2) {
|
||||
$("#register").submit(function(event) {
|
||||
return false;
|
||||
});
|
||||
if (pwd==pwd2) password=pwd;
|
||||
else password=null;
|
||||
if (!password||password.length<1) password=null;
|
||||
$("#createuser").prop("disabled", !(username && password));
|
||||
if (password) {
|
||||
if (username) success("user is ready to be created");
|
||||
else notice("password matches, please chose a valid user name");
|
||||
} else {
|
||||
if (username) notice("passwords don't match");
|
||||
else if ($('#user').val()) notice("user name is already in use");
|
||||
else notice("please chose a user name");
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
/// Checks if the receiver of a message exists on server.
|
||||
/** Calls checknewuser.php on server and enables the message submit
|
||||
button if the receiver of the message exists on the server. */
|
||||
function checkpartner(user) {
|
||||
$("#chat").submit(function(event) {
|
||||
return false;
|
||||
});
|
||||
emit("user", uid(user));
|
||||
}
|
||||
|
||||
/// Create Local Public-/Private-Key Pair
|
||||
/** Called if user has not yet his keys, just generates a new key pair. */
|
||||
function createkeypair(user, pwd) {
|
||||
notice("generating keys");
|
||||
openpgp.generateKey({
|
||||
numBits: 4096,
|
||||
userIds: [{name: user, email: user+'@'+hostname}],
|
||||
passphrase: pwd
|
||||
}).then(function(keyPair) {
|
||||
success("keys generated");
|
||||
localStorage.pubkey = keyPair.publicKeyArmored;
|
||||
localStorage.privkey = keyPair.privateKeyArmored;
|
||||
login();
|
||||
}).catch(function(e) {
|
||||
console.log(e)
|
||||
error("generating key pairs failed")
|
||||
});
|
||||
}
|
||||
|
||||
/// Get Own Public Key
|
||||
/** @return public key object */
|
||||
function publicKey() {
|
||||
if (typeof localStorage.pubkey == 'undefined') {
|
||||
if (typeof localStorage.pubKey == 'undefined') {
|
||||
return null;
|
||||
} else {
|
||||
localStorage.pubkey = localStorage.pubKey;
|
||||
localStorage.removeItem(pubKey);
|
||||
}
|
||||
}
|
||||
return openpgp.key.readArmored(localStorage.pubkey);
|
||||
}
|
||||
|
||||
/// Get Own Private Key
|
||||
/** @return private key object */
|
||||
function privateKey() {
|
||||
if (typeof localStorage.privkey == 'undefined') {
|
||||
if (typeof localStorage.privKey == 'undefined') {
|
||||
return null;
|
||||
} else {
|
||||
localStorage.privkey = localStorage.privKey;
|
||||
localStorage.removeItem(privKey);
|
||||
}
|
||||
}
|
||||
return openpgp.key.readArmored(localStorage.privkey);
|
||||
}
|
||||
|
||||
/// Get Own User Name
|
||||
/** Get user name as user id of first public key */
|
||||
function userid() {
|
||||
if (!publicKey() ||
|
||||
publicKey().keys.length < 1 ||
|
||||
publicKey().keys[0].getUserIds().length < 1) return null
|
||||
return publicKey().keys[0].getUserIds()[0];
|
||||
}
|
||||
|
||||
/// Clear Message Text And Attachments
|
||||
/** Does not remove the receiver's name */
|
||||
function clearmessage() {
|
||||
$("#message").prop(":disabled", true);
|
||||
filecontent = new Array();
|
||||
$('#preview').empty();
|
||||
$("#msg").val("");
|
||||
$("#message").prop(":disabled", false);
|
||||
}
|
||||
|
||||
function guessfilename(mimetype, user, date) {
|
||||
if (!user) user = userid();
|
||||
if (!date) date = new Date();
|
||||
var ext = mimetype.replace(/.*\/(x-)?/i, "");
|
||||
return pad(date.getFullYear())+pad(date.getMonth()+1)+pad(date.getDate())
|
||||
+"-"+ext+"-"+user+"@"+hostname+'.'+ext;
|
||||
}
|
||||
|
||||
/// Display Image Attachments
|
||||
function attachments(files, id, from, date) {
|
||||
if (files) files.forEach(function(file) {
|
||||
console.log(file);
|
||||
if (!file.name) file.name = guessfilename(file.type, from, date);
|
||||
var a = document.createElement('a');
|
||||
a.href = file.content;
|
||||
a.download = file.name;
|
||||
a.target = '_blank';
|
||||
if (file.type.match('^image/')) {
|
||||
var img = document.createElement('img');
|
||||
img.title = file.name;
|
||||
img.src = file.content;
|
||||
a.appendChild(img);
|
||||
} else if (file.type.match('^video/')) {
|
||||
var video = document.createElement('video');
|
||||
video.controls = true;
|
||||
video.title = file.name;
|
||||
video.src = file.content;
|
||||
a.appendChild(video);
|
||||
} else {
|
||||
var img = document.createElement('img');
|
||||
img.title = file.name;
|
||||
img.src = "images/Document_sans_PICOL-PIctorial-COmmunication-Language.svg";
|
||||
a.appendChild(img);
|
||||
}
|
||||
$(id).append(a);
|
||||
});
|
||||
}
|
||||
|
||||
var recorder;
|
||||
|
||||
function done() {
|
||||
if (recorder) {
|
||||
recorder.stop();
|
||||
recorder.recording(function(data) {
|
||||
previewfile(data, "video/webm");
|
||||
abort();
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
function abort() {
|
||||
if (recorder) {
|
||||
$("#videorecorder").hide();
|
||||
recorder.release();
|
||||
delete recorder; recorder = null;
|
||||
}
|
||||
}
|
||||
|
||||
/// Record Video from builtin camera
|
||||
function recordvideo() {
|
||||
try {
|
||||
abort();
|
||||
$("#videorecorder").show();
|
||||
recorder = new MediaStreamRecorder({
|
||||
video: {
|
||||
width: {ideal: 180},
|
||||
height: {ideal: 160}
|
||||
},
|
||||
audio: true
|
||||
});
|
||||
recorder.on("ready", function() {
|
||||
$("#videorecorder video").attr("src", recorder.preview());
|
||||
$("#videorecorder video").css("width", 180);
|
||||
$("#videorecorder video").css("height", 160);
|
||||
$("#videorecorder video").attr("width", 180);
|
||||
$("#videorecorder video").attr("height", 160);
|
||||
recorder.start();
|
||||
});
|
||||
} catch (e) {
|
||||
console.log(e);
|
||||
error("cannot access camera", true);
|
||||
}
|
||||
}
|
||||
|
||||
function previewfile(content, type, name) {
|
||||
if (!name) name = guessfilename(type);
|
||||
if (type.match('^image/')) {
|
||||
var img = document.createElement("img");
|
||||
img.onload = function() { // resize image to maximum 400px
|
||||
var MAX = 400;
|
||||
var width = img.width;
|
||||
var height = img.height;
|
||||
if (width > MAX) {
|
||||
height *= MAX / width;
|
||||
width = MAX;
|
||||
/// Get Own Private Key
|
||||
/** @return private key object */
|
||||
function privateKey() {
|
||||
if (typeof localStorage.privkey == 'undefined') {
|
||||
if (typeof localStorage.privKey == 'undefined') {
|
||||
return null
|
||||
} else {
|
||||
localStorage.privkey = localStorage.privKey
|
||||
localStorage.removeItem(privKey)
|
||||
}
|
||||
if (height > MAX) {
|
||||
width *= MAX / height;
|
||||
height = MAX;
|
||||
}
|
||||
return openpgp.key.readArmored(localStorage.privkey)
|
||||
}
|
||||
|
||||
/// Get Own User Name
|
||||
/** Get user name as user id of first public key */
|
||||
function userid() {
|
||||
if (!publicKey() ||
|
||||
publicKey().keys.length < 1 ||
|
||||
publicKey().keys[0].getUserIds().length < 1) return null
|
||||
return publicKey().keys[0].getUserIds()[0]
|
||||
}
|
||||
|
||||
/// Clear Message Text And Attachments
|
||||
/** Does not remove the receiver's name */
|
||||
function clearmessage() {
|
||||
$("#message").prop(":disabled", true)
|
||||
filecontent = new Array()
|
||||
$('#preview').empty()
|
||||
$("#msg").val("")
|
||||
$("#message").prop(":disabled", false)
|
||||
}
|
||||
|
||||
function guessfilename(mimetype, user, date) {
|
||||
if (!user) user = userid()
|
||||
if (!date) date = new Date()
|
||||
var ext = mimetype.replace(/.*\/(x-)?/i, "")
|
||||
return pad(date.getFullYear())+pad(date.getMonth()+1)+pad(date.getDate())
|
||||
+"-"+ext+"-"+user+"@"+hostname+'.'+ext
|
||||
}
|
||||
|
||||
/// Display Image Attachments
|
||||
function attachments(files, id, from, date) {
|
||||
if (files) files.forEach(function(file) {
|
||||
console.log(file)
|
||||
if (!file.name) file.name = guessfilename(file.type, from, date)
|
||||
var a = document.createElement('a')
|
||||
a.href = file.content
|
||||
a.download = file.name
|
||||
a.target = '_blank'
|
||||
if (file.type.match('^image/')) {
|
||||
var img = document.createElement('img')
|
||||
img.title = file.name
|
||||
img.src = file.content
|
||||
a.appendChild(img)
|
||||
} else if (file.type.match('^video/')) {
|
||||
var video = document.createElement('video')
|
||||
video.controls = true
|
||||
video.title = file.name
|
||||
video.src = file.content
|
||||
a.appendChild(video)
|
||||
} else {
|
||||
var img = document.createElement('img')
|
||||
img.title = file.name
|
||||
img.src = "images/Document_sans_PICOL-PIctorial-COmmunication-Language.svg"
|
||||
a.appendChild(img)
|
||||
}
|
||||
var canvas = document.createElement("canvas");
|
||||
canvas.width = width;
|
||||
canvas.height = height;
|
||||
var ctx = canvas.getContext("2d");
|
||||
ctx.drawImage(img, 0, 0, width, height);
|
||||
img.onload = function() {
|
||||
filecontent.push({name: name, type: type, content: img.src});
|
||||
$("#preview").append(img);
|
||||
success('image is ready to be sent');
|
||||
}
|
||||
img.src = canvas.toDataURL(file.type);
|
||||
img.title = name+"\n"+size(img.src.length);
|
||||
}
|
||||
img.src=content;
|
||||
} else if (type.match('^video/')) {
|
||||
filecontent.push({name: name, type: type, content: content});
|
||||
var video = document.createElement("video");
|
||||
video.setAttribute("controls", "controls");
|
||||
video.setAttribute("loop", "loop");
|
||||
video.setAttribute("src", content);
|
||||
video.setAttribute("title", name+"\n"+size(content.length));
|
||||
$("#preview").append(video);
|
||||
} else {
|
||||
filecontent.push({name: name, type: type, content: content});
|
||||
var img = document.createElement("img");
|
||||
img.src = "images/Document_sans_PICOL-PIctorial-COmmunication-Language.svg";
|
||||
img.title = name+"\n"+size(content.length);
|
||||
$("#preview").append(img);
|
||||
}
|
||||
}
|
||||
|
||||
/// Upload Attachment
|
||||
/** Prepares attachment to be sent in a message. If the attachment is
|
||||
an image, it resizes the image to 400px on the lager side.
|
||||
|
||||
By now, only images are supported.
|
||||
|
||||
Stores data in global variable @ref filecontent. */
|
||||
function fileupload(evt) {
|
||||
if (!window.FileReader)
|
||||
return error("your browser does not support file upload", true);
|
||||
for (var i=0, f; f=evt.target.files[i]; ++i) {
|
||||
var file = f;
|
||||
var reader = new FileReader();
|
||||
reader.onload = function(evt) {
|
||||
if (evt.target.error) return error("error reading file", true);
|
||||
if (evt.target.readyState==0) return notice("waiting for data …");
|
||||
if (evt.target.readyState==1) return notice("loading data …");
|
||||
previewfile(evt.target.result, file.type, file.name);
|
||||
}
|
||||
reader.readAsDataURL(file);
|
||||
}
|
||||
}
|
||||
|
||||
/// Sets Receiver's Name
|
||||
/** Called when clicked on a receiver's name. Sets focus to the
|
||||
message text field.
|
||||
|
||||
@param name The receiver's name. */
|
||||
function setreceiver(name) {
|
||||
$("#recv").val(name);
|
||||
checkpartner(name);
|
||||
$("#msg").focus();
|
||||
}
|
||||
|
||||
var userMap = null;
|
||||
function users(userlist) {
|
||||
console.log("rcv-> users");
|
||||
userMap = new Array();
|
||||
$("#allusers").empty();
|
||||
userlist.forEach(function(usr) {
|
||||
userMap[usr.name] = usr.pubkey;
|
||||
$("#allusers").append('<option value="'+htmlenc(usr.name)+'">')
|
||||
$("#allusers").hide();
|
||||
console.log(" user: "+usr.name);
|
||||
});
|
||||
localStorage.userMap = JSON.stringify(userMap);
|
||||
}
|
||||
|
||||
function fail(msg) {
|
||||
console.log("rcv-> fail");
|
||||
error(msg);
|
||||
}
|
||||
|
||||
function loggedin() {
|
||||
console.log("rcv-> login");
|
||||
success("login successful");
|
||||
chat();
|
||||
}
|
||||
|
||||
function user(usr) {
|
||||
if (usr.exists) console.log("rcv-> user("+usr.name+")");
|
||||
else console.log("rcv-> user("+usr.name+"): name is available");
|
||||
if ($("#newuser").is(":visible") && usr.name==uid($('#user').val())) {
|
||||
// same username as in the create user form
|
||||
$("#createuser").prop("disabled", usr.exists); // todo: check password
|
||||
if (!usr.exists) {
|
||||
username = usr.name;
|
||||
success("user name "+usr.name+" is available");
|
||||
} else {
|
||||
username = null;
|
||||
error("user name "+usr.name+" is in use", true);
|
||||
}
|
||||
}
|
||||
if ($("#chat").is(":visible") && usr.name==uid($("#recv").val())) { // same username as in receiver
|
||||
$('#send').prop("disabled", !usr.exists);
|
||||
$("label[for=send] img").css("opacity", usr.exists?"1.0":"0.4");
|
||||
$("label[for=send] img").css("filter", usr.exists?"alpha(opacity=100)":"alpha(opacity=40)");
|
||||
if (usr.exists) success("recipient exists");
|
||||
else error("unknown recipient", true);
|
||||
}
|
||||
if (userMap == null) {
|
||||
if (localStorage.userMap) {
|
||||
userMap = JSON.parse(localStorage.userMap);
|
||||
} else {
|
||||
userMap = new Array();
|
||||
}
|
||||
}
|
||||
if (usr.exists && usr.pubkey && userMap[usr.name] != usr.pubkey) {
|
||||
userMap[usr.name] = usr.pubkey;
|
||||
$("#allusers").append('option value="'+htmlenc(usr.name)+'"')
|
||||
localStorage.userMap = JSON.stringify(userMap);
|
||||
}
|
||||
}
|
||||
|
||||
function queryuser(usr) {
|
||||
console.log("query user: "+uid(usr));
|
||||
socket.emit("user", uid(usr));
|
||||
}
|
||||
|
||||
/// Get a user's public key.
|
||||
/** The first time, gets it from the server, later from the cache. */
|
||||
function getPublicKey(user) {
|
||||
var deferredObject = $.Deferred();
|
||||
if (userMap && userMap[user]) deferredObject.resolve(userMap[user]);
|
||||
else deferredObject.reject("unknown user");
|
||||
return deferredObject.promise();
|
||||
}
|
||||
|
||||
/// Received a list of messages from server
|
||||
function messages(msgs) {
|
||||
console.log("rcv-> messages("+msgs.length+")");
|
||||
if (!password || !privateKey())
|
||||
return setTimeout(function() {emit("messages");}, 1000); // try again later
|
||||
status("allmessages");
|
||||
notice("load messages, please wait …");
|
||||
msgs.forEach(function(msg) {message(msg, true);});
|
||||
status("chat");
|
||||
}
|
||||
|
||||
/// Received a message from server
|
||||
function message(m, internal) {
|
||||
if (!internal) console.log("rcv-> message("+m.user+")");
|
||||
if (!password || !privateKey()) return;
|
||||
var key=openpgp.key.readArmored(m.pubkey);
|
||||
if (key.err) return error("key of sender unreadable", true);
|
||||
var message = openpgp.message.readArmored(m.msg);
|
||||
var privkey = privateKey().keys[0];
|
||||
if (privkey.decrypt(password)) // prepare own key
|
||||
openpgp.decrypt({
|
||||
privateKeys: privkey,
|
||||
publicKeys: key.keys,
|
||||
message: message
|
||||
}).then(function(msg) { // decryption succeded
|
||||
// prepend message to list of messages
|
||||
var message = JSON.parse(msg.text);
|
||||
$("#msgs") // todo: check msg.signatures[0].valid
|
||||
.prepend('<div id="id'+(m.id)+'" class="msg '+
|
||||
(m.user==userid()?"me":"other")+
|
||||
'"><div class="header">'+
|
||||
'<span class="date">'+
|
||||
(new Date(m.time)).toLocaleString()+
|
||||
'</span><span class="sender">'+
|
||||
'<a href="javascript:void(0)" '+
|
||||
'onclick="setreceiver(this.innerHTML)">'+
|
||||
htmlenc(m.user)+
|
||||
'</a>'+(message.receiver?' → <a href="javascript:void(0)" '+
|
||||
'onclick="setreceiver(this.innerHTML)">'
|
||||
+htmlenc(message.receiver)+'</a>':"")+
|
||||
'</span></div>'+
|
||||
'<div class="text">'+
|
||||
htmlenc(message.text)+
|
||||
'</div></div><div class="clear"/>');
|
||||
// show attachments
|
||||
attachments(message.files, '#id'+m.id+' .text', m.user, new Date(m.time));
|
||||
// calculate and show emoticons
|
||||
$('#id'+m.id).emoticonize();
|
||||
if (!internal) beep(m.user);
|
||||
}).catch(function(e) {
|
||||
// not for me
|
||||
success();
|
||||
});
|
||||
}
|
||||
|
||||
/// Send Message To Server
|
||||
/** User wants to send a message. Encrypt message with own private and
|
||||
the receiver's public key, then send it to the server. */
|
||||
function sendmessage(recv, txt) {
|
||||
notice("1/3 preparing message …");
|
||||
$("#message").prop(":disabled", true);
|
||||
getPublicKey(recv) // get receiver's public key
|
||||
.done(function(pk) {
|
||||
var key=openpgp.key.readArmored(pk);
|
||||
if (!pk||key.err) {
|
||||
$("#message").prop(":disabled", false);
|
||||
error("receiver's key not found", true);
|
||||
return;
|
||||
}
|
||||
var privkey = privateKey().keys[0];
|
||||
privkey.decrypt(password); // get own private key ready
|
||||
var message = JSON.stringify({receiver: recv, text: txt, files: filecontent});
|
||||
notice("2/3 encrypting message …");
|
||||
openpgp.encrypt({publicKeys: key.keys.concat(publicKey().keys),
|
||||
privateKeys: privkey,
|
||||
data: message,
|
||||
armor: false})
|
||||
.then(function(msg) { // message is encrypted
|
||||
notice("3/3 sending message …");
|
||||
emit("message", {user: userid(), content: msg});
|
||||
clearmessage();
|
||||
})
|
||||
.catch(function(e) {
|
||||
$("#message").prop(":disabled", false);
|
||||
error("encryption of message failed", true);
|
||||
});
|
||||
$(id).append(a)
|
||||
})
|
||||
.fail(function(e) {
|
||||
$("#message").prop(":disabled", false);
|
||||
error("user not found", true);
|
||||
});
|
||||
}
|
||||
|
||||
/// Check And Set Password
|
||||
/** Check if given password matches to decrypt the private key. If so,
|
||||
store it in global temporary variable @ref password and start the
|
||||
chat. The password matches, when the private key can be decrypted.
|
||||
|
||||
@param pwd The password to check. */
|
||||
function setpw(pwd) {
|
||||
if (privateKey().keys[0].decrypt(pwd)) {
|
||||
success("password matches");
|
||||
$("#removeKey").hide();
|
||||
password = pwd;
|
||||
chat();
|
||||
} else {
|
||||
notice("password does not match");
|
||||
}
|
||||
}
|
||||
|
||||
/// Create Password Entry Field
|
||||
/** Asks user for password. When user starts to enter it, it is
|
||||
permanentely checked in setpw(). As soon as the password matches,
|
||||
setpw() continues automatically. No submit is required by the
|
||||
user. */
|
||||
function getpwd() {
|
||||
if (password) return;
|
||||
$("#removeKey").show();
|
||||
status("getpwd");
|
||||
}
|
||||
var recorder
|
||||
|
||||
function deleteUser() {
|
||||
var uid = userid();
|
||||
localStorage.removeItem(pubkey);
|
||||
localStorage.removeItem(privkey);
|
||||
error("user "+uid+" permanentely lost");
|
||||
}
|
||||
|
||||
function removeKey() {
|
||||
togglemenu();
|
||||
$("#removeKey").hide();
|
||||
status('forgotpassword');
|
||||
}
|
||||
|
||||
/// Main Chat Window
|
||||
/** Gets chat widgets from server and displays them. Starts timer for
|
||||
get() which polls for new messages. */
|
||||
var firsttime = true;
|
||||
function chat() {
|
||||
if (!password) return getpwd();
|
||||
status("chat");
|
||||
if (firsttime && $('#msgs').is(':empty')) {
|
||||
firsttime = false;
|
||||
notice("getting previous messages, please wait …");
|
||||
emit("messages");
|
||||
function done() {
|
||||
if (recorder) {
|
||||
recorder.stop()
|
||||
recorder.recording(function(data) {
|
||||
previewfile(data, "video/webm")
|
||||
abort()
|
||||
})
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Login User
|
||||
/** This is not really a login, it is just some kind of validation.
|
||||
The server does not care if a user is online or not, it is only
|
||||
interesting to the client to make sure, everything is fine. User
|
||||
is logged in the following way: User name and public key are sent
|
||||
to the server. If the user name exists on the server and the
|
||||
public key is the same, the user is considered logged in, his
|
||||
credentials seem to be valid. If user does not yet exits on
|
||||
server, it is created now. If user exists, but public key is
|
||||
different, then this is a complete failure, something went
|
||||
terribly wrong. */
|
||||
function login() {
|
||||
$("#username").html(userid()+"@"+hostname);
|
||||
emit("login", {name: userid(),
|
||||
pubkey: localStorage.pubkey});
|
||||
success("login sent to server");
|
||||
}
|
||||
|
||||
/// Get And Display Form To Create New User
|
||||
/** Shows user creation form. On submit, a private key is generated in
|
||||
createkeypair(), then login() creates the user. */
|
||||
function newuser() {
|
||||
status("newuser");
|
||||
}
|
||||
|
||||
/// Check if local storage is available
|
||||
function checkLocalStorage() {
|
||||
var test = 'test';
|
||||
try {
|
||||
localStorage.setItem(test, test);
|
||||
localStorage.removeItem(test);
|
||||
return true;
|
||||
} catch(e) {
|
||||
status("nolocalstorage");
|
||||
error("local storage not available");
|
||||
function abort() {
|
||||
if (recorder) {
|
||||
$("#videorecorder").hide()
|
||||
recorder.release()
|
||||
delete recorder recorder = null
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/// Initial Function: Startup
|
||||
/** Decide whether to login or to create a new user */
|
||||
function start() {
|
||||
$("#menu").hide();
|
||||
//status("startup");
|
||||
if (checkLocalStorage())
|
||||
/// Record Video from builtin camera
|
||||
function recordvideo() {
|
||||
try {
|
||||
if (!userid()) {
|
||||
newuser();
|
||||
} else {
|
||||
login();
|
||||
abort()
|
||||
$("#videorecorder").show()
|
||||
recorder = new MediaStreamRecorder({
|
||||
video: {
|
||||
width: {ideal: 180},
|
||||
height: {ideal: 160}
|
||||
},
|
||||
audio: true
|
||||
})
|
||||
recorder.on("ready", function() {
|
||||
$("#videorecorder video").attr("src", recorder.preview())
|
||||
$("#videorecorder video").css("width", 180)
|
||||
$("#videorecorder video").css("height", 160)
|
||||
$("#videorecorder video").attr("width", 180)
|
||||
$("#videorecorder video").attr("height", 160)
|
||||
recorder.start()
|
||||
})
|
||||
} catch (e) {
|
||||
console.log(e)
|
||||
error("cannot access camera", true)
|
||||
}
|
||||
}
|
||||
|
||||
function previewfile(content, type, name) {
|
||||
if (!name) name = guessfilename(type)
|
||||
if (type.match('^image/')) {
|
||||
var img = document.createElement("img")
|
||||
img.onload = function() { // resize image to maximum 400px
|
||||
var MAX = 400
|
||||
var width = img.width
|
||||
var height = img.height
|
||||
if (width > MAX) {
|
||||
height *= MAX / width
|
||||
width = MAX
|
||||
}
|
||||
if (height > MAX) {
|
||||
width *= MAX / height
|
||||
height = MAX
|
||||
}
|
||||
var canvas = document.createElement("canvas")
|
||||
canvas.width = width
|
||||
canvas.height = height
|
||||
var ctx = canvas.getContext("2d")
|
||||
ctx.drawImage(img, 0, 0, width, height)
|
||||
img.onload = function() {
|
||||
filecontent.push({name: name, type: type, content: img.src})
|
||||
$("#preview").append(img)
|
||||
success('image is ready to be sent')
|
||||
}
|
||||
img.src = canvas.toDataURL(file.type)
|
||||
img.title = name+"\n"+size(img.src.length)
|
||||
}
|
||||
} catch (m) {
|
||||
console.log(m.stack);
|
||||
error(m);
|
||||
img.src=content
|
||||
} else if (type.match('^video/')) {
|
||||
filecontent.push({name: name, type: type, content: content})
|
||||
var video = document.createElement("video")
|
||||
video.setAttribute("controls", "controls")
|
||||
video.setAttribute("loop", "loop")
|
||||
video.setAttribute("src", content)
|
||||
video.setAttribute("title", name+"\n"+size(content.length))
|
||||
$("#preview").append(video)
|
||||
} else {
|
||||
filecontent.push({name: name, type: type, content: content})
|
||||
var img = document.createElement("img")
|
||||
img.src = "images/Document_sans_PICOL-PIctorial-COmmunication-Language.svg"
|
||||
img.title = name+"\n"+size(content.length)
|
||||
$("#preview").append(img)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function init() {
|
||||
/// On Load, Call @ref start
|
||||
$(window.onbeforeunload = function() {
|
||||
return "Are you sure you want to navigate away?";
|
||||
});
|
||||
/// Allow Running in Background on Android
|
||||
document.addEventListener('deviceready', function () {
|
||||
if (cordova && cordova.plugins.backgroundMode) {
|
||||
cordova.plugins.backgroundMode.enable();
|
||||
/// Upload Attachment
|
||||
/** Prepares attachment to be sent in a message. If the attachment is
|
||||
an image, it resizes the image to 400px on the lager side.
|
||||
|
||||
By now, only images are supported.
|
||||
|
||||
Stores data in global variable @ref filecontent. */
|
||||
function fileupload(evt) {
|
||||
if (!window.FileReader)
|
||||
return error("your browser does not support file upload", true)
|
||||
for (var i=0, f; f=evt.target.files[i]; ++i) {
|
||||
var file = f
|
||||
var reader = new FileReader()
|
||||
reader.onload = function(evt) {
|
||||
if (evt.target.error) return error("error reading file", true)
|
||||
if (evt.target.readyState==0) return notice("waiting for data …")
|
||||
if (evt.target.readyState==1) return notice("loading data …")
|
||||
previewfile(evt.target.result, file.type, file.name)
|
||||
}
|
||||
reader.readAsDataURL(file)
|
||||
}
|
||||
}, false);
|
||||
socket.io.on("connect", connected);
|
||||
socket.io.on("reconnect", connected);
|
||||
socket.io.on("disconnect", disconnected);
|
||||
socket.io.on("error", disconnected);
|
||||
socket.on("login", loggedin);
|
||||
socket.on("fail", fail);
|
||||
socket.on("user", user);
|
||||
socket.on("users", users);
|
||||
socket.on("message", message);
|
||||
socket.on("messages", messages);
|
||||
connectionstatus();
|
||||
if (openpgp.initWorker("openpgp.worker.min.js"))
|
||||
console.log("asynchronous openpgp enabled");
|
||||
else
|
||||
console.log("asynchronous openpgp failed");
|
||||
emit('users');
|
||||
start();
|
||||
}
|
||||
}
|
||||
|
||||
/// Start Main Loop
|
||||
$(init);
|
||||
/// Sets Receiver's Name
|
||||
/** Called when clicked on a receiver's name. Sets focus to the
|
||||
message text field.
|
||||
|
||||
@param name The receiver's name. */
|
||||
function setreceiver(name) {
|
||||
$("#recv").val(name)
|
||||
checkpartner(name)
|
||||
$("#msg").focus()
|
||||
}
|
||||
|
||||
var userMap = null
|
||||
function users(userlist) {
|
||||
console.log("rcv-> users")
|
||||
userMap = new Array()
|
||||
$("#allusers").empty()
|
||||
userlist.forEach(function(usr) {
|
||||
userMap[usr.name] = usr.pubkey
|
||||
$("#allusers").append('<option value="'+htmlenc(usr.name)+'">')
|
||||
$("#allusers").hide()
|
||||
console.log(" user: "+usr.name)
|
||||
})
|
||||
localStorage.userMap = JSON.stringify(userMap)
|
||||
}
|
||||
|
||||
function user(usr) {
|
||||
if (usr.exists) console.log("rcv-> user("+usr.name+")")
|
||||
else console.log("rcv-> user("+usr.name+"): name is available")
|
||||
if ($("#newuser").is(":visible") && usr.name==uid($('#user').val())) {
|
||||
// same username as in the create user form
|
||||
$("#createuser").prop("disabled", usr.exists) // todo: check password
|
||||
if (!usr.exists) {
|
||||
username = usr.name
|
||||
success("user name "+usr.name+" is available")
|
||||
} else {
|
||||
username = null
|
||||
error("user name "+usr.name+" is in use", true)
|
||||
}
|
||||
}
|
||||
if ($("#chat").is(":visible") && usr.name==uid($("#recv").val())) { // same username as in receiver
|
||||
$('#send').prop("disabled", !usr.exists)
|
||||
$("label[for=send] img").css("opacity", usr.exists?"1.0":"0.4")
|
||||
$("label[for=send] img").css("filter", usr.exists?"alpha(opacity=100)":"alpha(opacity=40)")
|
||||
if (usr.exists) success("recipient exists")
|
||||
else error("unknown recipient", true)
|
||||
}
|
||||
if (userMap == null) {
|
||||
if (localStorage.userMap) {
|
||||
userMap = JSON.parse(localStorage.userMap)
|
||||
} else {
|
||||
userMap = new Array()
|
||||
}
|
||||
}
|
||||
if (usr.exists && usr.pubkey && userMap[usr.name] != usr.pubkey) {
|
||||
userMap[usr.name] = usr.pubkey
|
||||
$("#allusers").append('option value="'+htmlenc(usr.name)+'"')
|
||||
localStorage.userMap = JSON.stringify(userMap)
|
||||
}
|
||||
}
|
||||
|
||||
function queryuser(usr) {
|
||||
console.log("query user: "+uid(usr))
|
||||
socket.emit("user", uid(usr))
|
||||
}
|
||||
|
||||
/// Get a user's public key.
|
||||
/** The first time, gets it from the server, later from the cache. */
|
||||
function getPublicKey(user) {
|
||||
var deferredObject = $.Deferred()
|
||||
if (userMap && userMap[user]) deferredObject.resolve(userMap[user])
|
||||
else deferredObject.reject("unknown user")
|
||||
return deferredObject.promise()
|
||||
}
|
||||
|
||||
/// Received a list of messages from server
|
||||
function messages(msgs) {
|
||||
console.log("rcv-> messages("+msgs.length+")")
|
||||
if (!password || !privateKey())
|
||||
return setTimeout(function() {emit("messages")}, 1000) // try again later
|
||||
status("allmessages")
|
||||
notice("load messages, please wait …")
|
||||
msgs.forEach(function(msg) {message(msg, true)})
|
||||
status("chat")
|
||||
}
|
||||
|
||||
/// Received a message from server
|
||||
function message(m, internal) {
|
||||
if (!internal) console.log("rcv-> message("+m.user+")")
|
||||
if (!password || !privateKey()) return
|
||||
var key=openpgp.key.readArmored(m.pubkey)
|
||||
if (key.err) return error("key of sender unreadable", true)
|
||||
var message = openpgp.message.readArmored(m.msg)
|
||||
var privkey = privateKey().keys[0]
|
||||
if (privkey.decrypt(password)) // prepare own key
|
||||
openpgp.decrypt({
|
||||
privateKeys: privkey,
|
||||
publicKeys: key.keys,
|
||||
message: message
|
||||
}).then(function(msg) { // decryption succeded
|
||||
openpgp.decrypt({
|
||||
privateKeys: privkey,
|
||||
publicKeys: key.keys,
|
||||
message: message
|
||||
}).then(function(msg) { // decryption succeded
|
||||
// prepend message to list of messages
|
||||
var message = JSON.parse(msg.text)
|
||||
$("#msgs") // todo: check msg.signatures[0].valid
|
||||
.prepend('<div id="id'+(m.id)+'" class="msg '+
|
||||
(m.user==userid()?"me":"other")+
|
||||
'"><div class="header">'+
|
||||
'<span class="date">'+
|
||||
(new Date(m.time)).toLocaleString()+
|
||||
'</span><span class="sender">'+
|
||||
'<a href="javascript:void(0)" '+
|
||||
'onclick="setreceiver(this.innerHTML)">'+
|
||||
htmlenc(m.user)+
|
||||
'</a>'+(message.receiver?' → <a href="javascript:void(0)" '+
|
||||
'onclick="setreceiver(this.innerHTML)">'
|
||||
+htmlenc(message.receiver)+'</a>':"")+
|
||||
'</span></div>'+
|
||||
'<div class="text">'+
|
||||
htmlenc(message.text)+
|
||||
'</div></div><div class="clear"/>')
|
||||
// show attachments
|
||||
attachments(message.files, '#id'+m.id+' .text', m.user, new Date(m.time))
|
||||
// calculate and show emoticons
|
||||
$('#id'+m.id).emoticonize()
|
||||
if (!internal) beep(m.user)
|
||||
}).catch(function(e) {
|
||||
// not for me
|
||||
success()
|
||||
})
|
||||
}
|
||||
|
||||
/// Send Message To Server
|
||||
/** User wants to send a message. Encrypt message with own private and
|
||||
the receiver's public key, then send it to the server. */
|
||||
function sendmessage(recv, txt) {
|
||||
notice("1/3 preparing message …")
|
||||
$("#message").prop(":disabled", true)
|
||||
getPublicKey(recv) // get receiver's public key
|
||||
.done(function(pk) {
|
||||
var key=openpgp.key.readArmored(pk)
|
||||
if (!pk||key.err) {
|
||||
$("#message").prop(":disabled", false)
|
||||
error("receiver's key not found", true)
|
||||
return
|
||||
}
|
||||
var privkey = privateKey().keys[0]
|
||||
privkey.decrypt(password) // get own private key ready
|
||||
var message = JSON.stringify({receiver: recv, text: txt, files: filecontent})
|
||||
notice("2/3 encrypting message …")
|
||||
openpgp.encrypt({publicKeys: key.keys.concat(publicKey().keys),
|
||||
privateKeys: privkey,
|
||||
data: message,
|
||||
armor: false})
|
||||
.then(function(msg) { // message is encrypted
|
||||
notice("3/3 sending message …")
|
||||
emit("message", {user: userid(), content: msg})
|
||||
clearmessage()
|
||||
})
|
||||
.catch(function(e) {
|
||||
$("#message").prop(":disabled", false)
|
||||
error("encryption of message failed", true)
|
||||
})
|
||||
})
|
||||
.fail(function(e) {
|
||||
$("#message").prop(":disabled", false)
|
||||
error("user not found", true)
|
||||
})
|
||||
}
|
||||
|
||||
/// Check And Set Password
|
||||
/** Check if given password matches to decrypt the private key. If so,
|
||||
store it in global temporary variable @ref password and start the
|
||||
chat. The password matches, when the private key can be decrypted.
|
||||
|
||||
@param pwd The password to check. */
|
||||
function setpw(pwd) {
|
||||
if (privateKey().keys[0].decrypt(pwd)) {
|
||||
success("password matches")
|
||||
$("#removeKey").hide()
|
||||
password = pwd
|
||||
chat()
|
||||
} else {
|
||||
notice("password does not match")
|
||||
}
|
||||
}
|
||||
|
||||
/// Create Password Entry Field
|
||||
/** Asks user for password. When user starts to enter it, it is
|
||||
permanentely checked in setpw(). As soon as the password matches,
|
||||
setpw() continues automatically. No submit is required by the
|
||||
user. */
|
||||
function getpwd() {
|
||||
if (password) return
|
||||
$("#removeKey").show()
|
||||
status("getpwd")
|
||||
}
|
||||
|
||||
function deleteUser() {
|
||||
var uid = userid()
|
||||
localStorage.removeItem(pubkey)
|
||||
localStorage.removeItem(privkey)
|
||||
error("user "+uid+" permanentely lost")
|
||||
}
|
||||
|
||||
function removeKey() {
|
||||
togglemenu()
|
||||
$("#removeKey").hide()
|
||||
status('forgotpassword')
|
||||
}
|
||||
|
||||
/// Main Chat Window
|
||||
/** Gets chat widgets from server and displays them. Starts timer for
|
||||
get() which polls for new messages. */
|
||||
var firsttime = true
|
||||
function chat() {
|
||||
if (!password) return getpwd()
|
||||
status("chat")
|
||||
if (firsttime && $('#msgs').is(':empty')) {
|
||||
firsttime = false
|
||||
notice("getting previous messages, please wait …")
|
||||
emit("messages")
|
||||
}
|
||||
}
|
||||
|
||||
/// Login User
|
||||
/** This is not really a login, it is just some kind of validation.
|
||||
The server does not care if a user is online or not, it is only
|
||||
interesting to the client to make sure, everything is fine. User
|
||||
is logged in the following way: User name and public key are sent
|
||||
to the server. If the user name exists on the server and the
|
||||
public key is the same, the user is considered logged in, his
|
||||
credentials seem to be valid. If user does not yet exits on
|
||||
server, it is created now. If user exists, but public key is
|
||||
different, then this is a complete failure, something went
|
||||
terribly wrong. */
|
||||
function login() {
|
||||
$("#username").html(userid()+"@"+hostname)
|
||||
emit("login", {name: userid(),
|
||||
pubkey: localStorage.pubkey})
|
||||
success("login sent to server")
|
||||
}
|
||||
|
||||
/// Get And Display Form To Create New User
|
||||
/** Shows user creation form. On submit, a private key is generated in
|
||||
createkeypair(), then login() creates the user. */
|
||||
function newuser() {
|
||||
status("newuser")
|
||||
}
|
||||
|
||||
/// Check if local storage is available
|
||||
function checkLocalStorage() {
|
||||
var test = 'test'
|
||||
try {
|
||||
localStorage.setItem(test, test)
|
||||
localStorage.removeItem(test)
|
||||
return true
|
||||
} catch(e) {
|
||||
status("nolocalstorage")
|
||||
error("local storage not available")
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
/// Initial Function: Startup
|
||||
/** Decide whether to login or to create a new user */
|
||||
function start() {
|
||||
$("#menu").hide()
|
||||
//status("startup")
|
||||
if (checkLocalStorage())
|
||||
try {
|
||||
if (!userid()) {
|
||||
newuser()
|
||||
} else {
|
||||
login()
|
||||
}
|
||||
} catch (m) {
|
||||
console.log(m.stack)
|
||||
error(m)
|
||||
}
|
||||
}
|
||||
|
||||
function init() {
|
||||
/// On Load, Call @ref start
|
||||
$(window.onbeforeunload = function() {
|
||||
return "Are you sure you want to navigate away?"
|
||||
})
|
||||
/// Allow Running in Background on Android
|
||||
document.addEventListener('deviceready', function () {
|
||||
if (cordova && cordova.plugins.backgroundMode) {
|
||||
cordova.plugins.backgroundMode.enable()
|
||||
}
|
||||
}, false)
|
||||
connectionstatus()
|
||||
if (openpgp.initWorker("openpgp.worker.min.js"))
|
||||
console.log("asynchronous openpgp enabled")
|
||||
else
|
||||
console.log("asynchronous openpgp failed")
|
||||
emit('users')
|
||||
start()
|
||||
}
|
||||
|
||||
/// Start Main Loop
|
||||
$(init)
|
||||
|
||||
@@ -30,7 +30,7 @@
|
||||
|
||||
<ul id="menu" style="display: none">
|
||||
<li onclick="backup()">Download Backup</li>
|
||||
<li class="toolbutton"><label for="restore">Restore Backup</label><input autocomplete="off" type="file" accept="*.bak" id="restore" /></li>
|
||||
<li id="restore-menu-item" class="toolbutton"><label for="restore">Restore Backup</label><input autocomplete="off" type="file" accept="*.bak" id="restore" /></li>
|
||||
<li id="groups" onclick="groups()">Edit Groups</li>
|
||||
<li id="removeKey" style="display: none" onclick="removeKey()">Password Forgotten</li>
|
||||
<li id="android-download" href="safechat.apk"><a href="safechat.apk">Download Android-App</a></li>
|
||||
@@ -182,6 +182,25 @@
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<!-- Fatal: Abort -->
|
||||
|
||||
<div id="fatal">
|
||||
<h2 id="fatal-msg">Failure</h2>
|
||||
<p>The SafeChat has been aborted due to a fatal error.</p>
|
||||
<p>There is a problem in your browser. Please try to reload. If the problem persists, please update your web browser or try SafeChat in another browser.</p>
|
||||
<p>The following java script features are required:</p>
|
||||
<ul class="features">
|
||||
<li id="localstorage">Local Storage</li>
|
||||
<li id="indexeddb">Indexed DB</li>
|
||||
<li id="randomvalues">Cryptography: Random Values</li>
|
||||
</ul>
|
||||
<p>The following java script features are optional:</p>
|
||||
<ul class="features">
|
||||
<li id="vibrate">Vibration (vibrates when new message arrives)</li>
|
||||
<li id="filereader">File Reader (required to restore backup)</li>
|
||||
</ul>
|
||||
</div>
|
||||
|
||||
<!-- Error: Missing JavaScript -->
|
||||
<noscript>
|
||||
<h2>JavasScript Required!</h2>
|
||||
@@ -193,12 +212,6 @@
|
||||
<p><a href="<%= package.documentation %>" target="_blank">more information</a></p>
|
||||
</noscript>
|
||||
|
||||
<!-- Error: Missing LocalStorage -->
|
||||
<div id="nolocalstorage" style="display: none">
|
||||
<p>No access to local storage. Please allow access to local
|
||||
storage, i.e. do not block cookies.<p>
|
||||
</div>
|
||||
|
||||
<!-- Notice: Setup Messages -->
|
||||
<div id="allmessages" style="display: none">
|
||||
<p>Setting up all previous messages, please wait …</p>
|
||||
|
||||
Reference in New Issue
Block a user