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safechat
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some rearrangements

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master
Marc Wäckerlin 8 years ago
parent 94b952fbcc
commit cc4f5d6619
3 changed files with 947 additions and 778 deletions
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  1. 1252
      nodejs/public/javascripts/safechat.js
  2. 0
      nodejs/public/sounds/beep.mp3
  3. 27
      nodejs/views/index.ejs

1252
nodejs/public/javascripts/safechat.js
Unescape View File

@ -37,19 +37,24 @@
// 1 2 3 4 5 6 7 8 // 1 2 3 4 5 6 7 8
// 45678901234567890123456789012345678901234567890123456789012345678901234567890 // 45678901234567890123456789012345678901234567890123456789012345678901234567890
function SafeChatClient(success, notice, error) { function SafeChat() {
/// Cache Client's Key from local Strorage /// Create UID from a name by appending an E-Mail
var k = null; function uid(name) {
return name+' <'+name+'@'+hostname+'>'
function browserSupported() {
window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB
window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction
window.IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange
return window.indexedDB && window.crypto.getRandomValues && Storage
} }
/// Get User Key /// @class Crypto cryptographic functions
/** @param view is of class SafeChat.View */
function Crypto(view) {
/// cache client's key from local strorage
var k = null
/// detect hosstname, default to safechat.ch
var hostname = window.location.hostname!='localhost'?window.location.hostname:'safechat.ch'
/// get user key
/** @internal key ist cached in k /** @internal key ist cached in k
@return key */ @return key */
function key() { function key() {
@ -58,272 +63,439 @@ function SafeChatClient(success, notice, error) {
return k = openpgp.key.readArmored(localStorage.key) return k = openpgp.key.readArmored(localStorage.key)
} }
/// Get Own User Name /// get own user name
/** Get user name as user id of first public key */ /** get user name as user id of first public key */
function uid() { function user() {
if (k || key()) return k.pub.keys[0].getUserIds()[0] if (k || key()) return k.pub.keys[0].getUserIds()[0]
return null return null
} }
/// Create New User /// create New User
function createuser(user, email, pwd) { function createuser(user, email, pwd) {
notice("generating keys") view.notice("generating keys")
openpgp.generateKey({ openpgp.generateKey({
numBits: 4096, numBits: 4096,
userIds: [{name: user, email: email}], userIds: [{name: user, email: email}],
passphrase: pwd passphrase: pwd
}).then(function(keyPair) { }).then(function(keyPair) {
success("keys generated") view.success("keys generated")
localStorage.key = keyPair.privateKeyArmored localStorage.key = keyPair.privateKeyArmored
k = keyPair.key k = keyPair.key
}).catch(function(e) { }).catch(function(e) {
console.log(e) console.log(e)
error("generating key pairs failed") view.fatal("generating key pairs failed")
}) })
} }
/// open private key with password
/** @return @c true if password matches */
function password(pwd) { function password(pwd) {
return (k || keys()) && k.keys[0].decrypt(pwd) return (k || keys()) && k.keys[0].decrypt(pwd)
} }
/// Encrypt Message /// Encrypt Message
function encrypt(targetkeys, message, done, failed) { function encrypt(message, targetkeys, done, failed) {
if (!k) return false if (!k) return false
openpgp.encrypt({ openpgp.encrypt({
publicKeys: targets.keys.concat(k.keys), publicKeys: targetkeys.keys.concat(k.keys),
privateKeys: k, privateKeys: k,
data: message, data: message,
armor: false}) armor: false
.then(done) }).then(done).else(failed)
.else(failed)
return true return true
} }
/// Decrypt Message /// Decrypt Message
function decrypt(message) { function decrypt(message, sourcekeys, done, failed) {
if (!k) return false if (!k) return false
openpgp.decrypt({
privateKeys: k.keys,
publicKeys: sourcekeys.keys,
message: message
}).then(done).else(failed)
return true 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 /// database that stores in indexed db
var socket = io.connect(); function DataBase() {
var hostname = window.location.hostname!='localhost'?window.location.hostname:'safechat.ch';
function user(name, key) {
}
}
/// manage local copy of users
function Users() {
var users = new Map()
function add(usr) {
if (!users[usr.name])
users[usr.name].valid = true
else
users[usr.name].valid = users[usr.name].valid && users[usr.name].key == usr.key
users[usr.name].key = usr.key
users[usr.name].online = usr.online
}
}
/// manage local copy of messages
function Messages() {
var messages = {};
function add() {
}
}
/// @class Communication client socket communication
/** @param view is of class SafeChat.View */
function Communication(controller) {
var socket = io.connect()
function broadcast(signal, data) {
console.log("<=snd "+signal)
socket.broadcast.emit(signal, data)
}
function emit(signal, data) {
console.log("<-snd "+signal)
socket.emit(signal, data)
}
socket
.on("login", controller.loggedin)
.on("fail", controller.fail)
.on("user", controller.user)
.on("users", controller.users)
.on("message", controller.message)
.on("messages", controller.messages)
.io
.on("connect", controller.connected)
.on("reconnect", controller.connected)
.on("disconnect", controller.disconnected)
.on("error", controller.disconnected)
/// Padding for numbers in dates }
function pad(n) {
/// @class View provides the glue to the GUI in the index.ejs file
/** View provides the following callbacks:
- status updates:
- @c notice(msg) to display information
- @c warning(msg)
- @c error(msg)
- @c fatal(msg) */
function View() {
var nexttimer = null
/// Padding for numbers in dates
function pad(n) {
return n<10 ? '0'+n : n return n<10 ? '0'+n : n
} }
function uid(name) { /// escape text to show in html @see htmldec
return name+' <'+name+'@'+hostname+'>'; function htmlenc(html) {
} return $('<div/>').text(html).html()
}
/// Convert number of bytes to readable text /// decode html encoded text @see htmlenc
function size(num) { function htmldec(data) {
if (num>0.6*1024) { return $('<div/>').html(data).text()
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";
} }
} else {
return Math.round(num/1024/1024)+"MB"; /// alert user accoustically or by vibration
/** alert user, e.g. that a new message has arrived. */
function beep() {
if (navigator.vibrate) navigator.vibrate(1000)
(new Audio("sounds/beep.mp3")).play()
} }
} else {
return Math.round(num/1024)+"kB"; /// show fatal error
/** something completely failed, abort
@param msg */
function fatal(msg) {
if (nexttimer) clearTimeout(nexttimer)
if (msg) {
error(msg)
$('#fatal-msg').html(msg)
} }
} else { show('fatal')
return num+"B";
} }
}
var reboottimer = null; /// show error messsage
/// Show error messsage /** shows an error message and logs to console.
/** Fades in an error message and logs to console.
@param data (optional) The error can be a string or any structure. @param data (optional) The error can be a string or any structure.
Strings are shown to the user, structures are logged only. Strings are shown to the user, structures are logged only.
@param stay (optional) If not given as @c true, reloads page after 5s. */ @param next (optional) next function to call */
function error(data, stay) { function error(data, next) {
$("#status").hide(); if (nexttimer) clearTimeout(nexttimer)
$("#status").hide()
$("#status").addClass("error") $("#status").addClass("error")
$("#status").removeClass("notice") $("#status").removeClass("notice")
$("#status").removeClass("success") $("#status").removeClass("success")
if (data) { if (data) {
if (typeof data == 'string') { if (typeof data == 'string') {
$("#status").html(data); $("#status").html(data)
console.log("error: "+data); console.log("error: "+data)
} else { } else {
$("#status").html('unknown error: '+JSON.stringify(data)); $("#status").html('error')
console.log("error: "+JSON.stringify(data)); console.log("error: "+JSON.stringify(data))
} }
} else { } else {
$("#status").html('error'); $("#status").html('error')
console.log("error"); console.log("error")
} }
$("#status").show(); $("#status").show()
if (!stay) { if (next) nexttimer = setTimeout(function() {
console.log("reboot in 5s"); nexttimer = null
console.log((new Error('stacktrace')).stack); next()
if (!reboottimer) reboottimer = setTimeout(function() { }, 5000)
reboottimer = null;
start();
}, 5000);
} }
}
/// Show notice messsage /// show notice messsage
/** Fades in an notice message and logs to console. /** shows an notice message and logs to console.
@param text (optional) The data is a string. */ @param text (optional) The data is a string. */
function notice(text) { function notice(text) {
$("#status").hide() $("#status").hide()
$("#status").addClass("notice") $("#status").addClass("notice")
$("#status").removeClass("error") $("#status").removeClass("error")
$("#status").removeClass("success") $("#status").removeClass("success")
if (text) { if (text) {
$("#status").html(text); $("#status").html(text)
console.log("notice: "+text); console.log("notice: "+text)
} else { } else {
$("#status").html(''); $("#status").html('')
console.log("notice"); console.log("notice")
}
$("#status").show()
} }
$("#status").show();
}
/// Show notice messsage /// show success messsage
/** Fades in an success message and logs to console. /** shows an success message and logs to console.
@param text (optional) The data is a string. */ @param text (optional) The data is a string. */
function success(text) { function success(text) {
$("#status").hide(); $("#status").hide()
$("#status").addClass("success") $("#status").addClass("success")
$("#status").removeClass("error") $("#status").removeClass("error")
$("#status").removeClass("notice") $("#status").removeClass("notice")
if (text) { if (text) {
$("#status").html(text); $("#status").html(text)
console.log("success: "+text); console.log("success: "+text)
} else { } else {
$("#status").html(''); $("#status").html('')
console.log("success"); console.log("success")
}
$("#status").show()
} }
$("#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) { /// show a specific screen given the element id
console.log("<-snd "+signal); /** @param id html id to be shown.
socket.emit(signal, data); @param msg (optional) the success message text */
} function show(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 connected() { /// show server connected status
console.log("server connected"); function connected() {
$("#connectionstatus #bad").hide(); console.log("server connected")
$("#connectionstatus #good").show(); $("#connectionstatus #bad").hide()
success("server connected"); $("#connectionstatus #good").show()
} success("server connected")
}
function disconnected() { /// show server disconnected status
console.log("server disconnected"); function disconnected() {
$("#connectionstatus #good").hide(); console.log("server disconnected")
$("#connectionstatus #bad").show(); $("#connectionstatus #good").hide()
error("server disconnected", true); $("#connectionstatus #bad").show()
} error("server disconnected", true)
}
function connectionstatus() { /// toggle menu display
if (socket.connected) connected(); else disconnected(); function togglemenu() {
} $("#menu").toggle()
}
function htmlenc(html) { function checkFeature(id, query) {
return $('<div/>').text(html).html(); if (query) $('#'+id+':before')
} .css('color', 'green')
.css('content', '&#x2714;')
else $('#'+id+':before')
.css('color', 'red')
.css('content', '&#x2718;')
if (query) $('#'+id)
.css('color', 'green')
.css('text-decoration', 'line-through')
else $('#'+id)
.css('color', 'red')
.css('text-decoration', 'none')
}
function htmldec(data) { function checkFeatures() {
return $('<div/>').html(data).text(); $('ul.features').css('list-style-type', 'none')
} checkFeature("localstorage", Storage)
checkFeature("indexeddb", window.indexedDB)
checkFeature("randomvalues", window.crypto.getRandomValues)
checkFeature("vibrate", navigator.vibrate)
checkFeature("filereader", window.FileReader)
}
/// Alert user function DataTransfer() {
/** 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 var reboottimer = null
function togglemenu() { var data = new DataTransfer()
$("#menu").toggle();
}
/// Download Profile Backup /// download profile backup
function backup() { function backup() {
var download = document.createElement('a'); var download = document.createElement('a')
download.href = 'data:attachment/text,'+encodeURI(JSON.stringify(localStorage)); download.href = 'data:attachment/text,'+encodeURI(JSON.stringify(localStorage))
download.target = '_blank'; download.target = '_blank'
var now = new Date(); var now = new Date()
download.download = download.download =
pad(now.getFullYear())+pad(now.getMonth()+1)+pad(now.getDate())+ pad(now.getFullYear())+pad(now.getMonth()+1)+pad(now.getDate())+
"-"+userid()+"@"+hostname+".bak"; "-"+userid()+"@"+hostname+".bak"
var clickEvent = new MouseEvent("click", { var clickEvent = new MouseEvent("click", {
"view": window, "view": window,
"bubbles": true, "bubbles": true,
"cancelable": false "cancelable": false
}); })
download.dispatchEvent(clickEvent); download.dispatchEvent(clickEvent)
togglemenu(); togglemenu()
} }
/// Upload Profile Backup /// Upload Profile Backup
function restore(evt) { 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) { for (var i=0, f; f=evt.target.files[i]; ++i) {
var file = f; var file = f
var reader = new FileReader(); var reader = new FileReader()
reader.onload = function(evt) { reader.onload = function(evt) {
if (evt.target.error) return error("error reading file", true); if (evt.target.error) return error("error reading file")
if (evt.target.readyState==0) return notice("waiting for data …"); if (evt.target.readyState==0) return notice("waiting for data …")
if (evt.target.readyState==1) return notice("loading data …"); if (evt.target.readyState==1) return notice("loading data …")
var parsed=JSON.parse(evt.target.result); var parsed=JSON.parse(evt.target.result)
togglemenu(); togglemenu()
localStorage.pubkey = parsed.pubkey; localStorage.pubkey = parsed.pubkey
localStorage.privkey = parsed.privkey; localStorage.privkey = parsed.privkey
success("backup is restored"); success("backup is restored")
console.log("reboot after restore in 2s"); console.log("reboot after restore in 2s")
if (!reboottimer) reboottimer = setTimeout(function() { if (!reboottimer && reboot) reboottimer = setTimeout(function() {
reboottimer = null; reboottimer = null
start(); }, 2000)
}, 2000); }
} reader.readAsText(file)
reader.readAsText(file); }
}
if (!window.FileReader) {
$('restore-menu-item').hide()
error("your browser does not support file upload")
}
}
}
/// @class Controller defines the programm flow
function Controller(view) {
var db = new Database()
var communication = new Communication(this)
var users = new Users()
function fail(msg) {
console.log('rcv-> fail('+msg+')')
error(msg)
}
function loggedin() {
console.log("rcv-> login")
success("login successful")
chat()
} }
}
/// Configure local groups function user(usr) {
/** … */ console.log("rcv-> user")
function groups() { if (usr.exits) users.add(usr)
}
function users() {
console.log("rcv-> users")
}
function message(msg) {
console.log("rcv-> message")
}
function messages(msgs) {
console.log("rcv-> messages")
}
this.connected = view.connected
this.reconnect = view.connected
this.disconnect = view.disconnected
this.error = view.disconnected
function login() {
}
function user(usr) {
if (usr.exists) db.adduser
}
function initBrowser() {
window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB
window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction
window.IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange
navigator.vibrate = navigator.vibrate || navigator.webkitVibrate || navigator.mozVibrate || navigator.msVibrate
return window.indexedDB && window.crypto.getRandomValues && Storage
}
function run() {
}
function start() {
view.reboot = run
var compatible = initBrowser()
view.checkFeatures()
if (!compatible)
view.fatal("your browser is not supported")
else
run()
}
}
//==============================================================================
//------------------------------------------------------------------------------
return new Controller(new View())
} }
/// Check if password is set and matches the repeated password var filecontent = new Array() ///< temporary storage for attachments
/** Checks if both passwords are identical and valid and gives var reboottimer = null
function connectionstatus() {
if (socket.connected) connected() else disconnected()
}
/// 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. feedback to the user.
Called when user edits the password fields. Called when user edits the password fields.
@ -333,367 +505,361 @@ function groups() {
@param pwd The password. @param pwd The password.
@param pwd2 The repeated password. */ @param pwd2 The repeated password. */
function checkpwd(pwd, pwd2) { function checkpwd(pwd, pwd2) {
$("#register").submit(function(event) { $("#register").submit(function(event) {
return false; return false
}); })
if (pwd==pwd2) password=pwd; if (pwd==pwd2) password=pwd
else password=null; else password=null
if (!password||password.length<1) password=null; if (!password||password.length<1) password=null
$("#createuser").prop("disabled", !(username && password)); $("#createuser").prop("disabled", !(username && password))
if (password) { if (password) {
if (username) success("user is ready to be created"); if (username) success("user is ready to be created")
else notice("password matches, please chose a valid user name"); else notice("password matches, please chose a valid user name")
} else { } else {
if (username) notice("passwords don't match"); if (username) notice("passwords don't match")
else if ($('#user').val()) notice("user name is already in use"); else if ($('#user').val()) notice("user name is already in use")
else notice("please chose a user name"); else notice("please chose a user name")
} }
} }
/// Checks if the receiver of a message exists on server. /// Checks if the receiver of a message exists on server.
/** Calls checknewuser.php on server and enables the message submit /** Calls checknewuser.php on server and enables the message submit
button if the receiver of the message exists on the server. */ button if the receiver of the message exists on the server. */
function checkpartner(user) { function checkpartner(user) {
$("#chat").submit(function(event) { $("#chat").submit(function(event) {
return false; return false
}); })
emit("user", uid(user)); emit("user", uid(user))
} }
/// Create Local Public-/Private-Key Pair /// Create Local Public-/Private-Key Pair
/** Called if user has not yet his keys, just generates a new key pair. */ /** Called if user has not yet his keys, just generates a new key pair. */
function createkeypair(user, pwd) { function createkeypair(user, pwd) {
notice("generating keys"); notice("generating keys")
openpgp.generateKey({ openpgp.generateKey({
numBits: 4096, numBits: 4096,
userIds: [{name: user, email: user+'@'+hostname}], userIds: [{name: user, email: user+'@'+hostname}],
passphrase: pwd passphrase: pwd
}).then(function(keyPair) { }).then(function(keyPair) {
success("keys generated"); success("keys generated")
localStorage.pubkey = keyPair.publicKeyArmored; localStorage.pubkey = keyPair.publicKeyArmored
localStorage.privkey = keyPair.privateKeyArmored; localStorage.privkey = keyPair.privateKeyArmored
login(); login()
}).catch(function(e) { }).catch(function(e) {
console.log(e) console.log(e)
error("generating key pairs failed") error("generating key pairs failed")
}); })
} }
/// Get Own Public Key /// Get Own Public Key
/** @return public key object */ /** @return public key object */
function publicKey() { function publicKey() {
if (typeof localStorage.pubkey == 'undefined') { if (typeof localStorage.pubkey == 'undefined') {
if (typeof localStorage.pubKey == 'undefined') { if (typeof localStorage.pubKey == 'undefined') {
return null; return null
} else { } else {
localStorage.pubkey = localStorage.pubKey; localStorage.pubkey = localStorage.pubKey
localStorage.removeItem(pubKey); localStorage.removeItem(pubKey)
} }
} }
return openpgp.key.readArmored(localStorage.pubkey); return openpgp.key.readArmored(localStorage.pubkey)
} }
/// Get Own Private Key /// Get Own Private Key
/** @return private key object */ /** @return private key object */
function privateKey() { function privateKey() {
if (typeof localStorage.privkey == 'undefined') { if (typeof localStorage.privkey == 'undefined') {
if (typeof localStorage.privKey == 'undefined') { if (typeof localStorage.privKey == 'undefined') {
return null; return null
} else { } else {
localStorage.privkey = localStorage.privKey; localStorage.privkey = localStorage.privKey
localStorage.removeItem(privKey); localStorage.removeItem(privKey)
} }
} }
return openpgp.key.readArmored(localStorage.privkey); return openpgp.key.readArmored(localStorage.privkey)
} }
/// Get Own User Name /// Get Own User Name
/** Get user name as user id of first public key */ /** Get user name as user id of first public key */
function userid() { function userid() {
if (!publicKey() || if (!publicKey() ||
publicKey().keys.length < 1 || publicKey().keys.length < 1 ||
publicKey().keys[0].getUserIds().length < 1) return null publicKey().keys[0].getUserIds().length < 1) return null
return publicKey().keys[0].getUserIds()[0]; return publicKey().keys[0].getUserIds()[0]
} }
/// Clear Message Text And Attachments /// Clear Message Text And Attachments
/** Does not remove the receiver's name */ /** Does not remove the receiver's name */
function clearmessage() { function clearmessage() {
$("#message").prop(":disabled", true); $("#message").prop(":disabled", true)
filecontent = new Array(); filecontent = new Array()
$('#preview').empty(); $('#preview').empty()
$("#msg").val(""); $("#msg").val("")
$("#message").prop(":disabled", false); $("#message").prop(":disabled", false)
} }
function guessfilename(mimetype, user, date) { function guessfilename(mimetype, user, date) {
if (!user) user = userid(); if (!user) user = userid()
if (!date) date = new Date(); if (!date) date = new Date()
var ext = mimetype.replace(/.*\/(x-)?/i, ""); var ext = mimetype.replace(/.*\/(x-)?/i, "")
return pad(date.getFullYear())+pad(date.getMonth()+1)+pad(date.getDate()) return pad(date.getFullYear())+pad(date.getMonth()+1)+pad(date.getDate())
+"-"+ext+"-"+user+"@"+hostname+'.'+ext; +"-"+ext+"-"+user+"@"+hostname+'.'+ext
} }
/// Display Image Attachments /// Display Image Attachments
function attachments(files, id, from, date) { function attachments(files, id, from, date) {
if (files) files.forEach(function(file) { if (files) files.forEach(function(file) {
console.log(file); console.log(file)
if (!file.name) file.name = guessfilename(file.type, from, date); if (!file.name) file.name = guessfilename(file.type, from, date)
var a = document.createElement('a'); var a = document.createElement('a')
a.href = file.content; a.href = file.content
a.download = file.name; a.download = file.name
a.target = '_blank'; a.target = '_blank'
if (file.type.match('^image/')) { if (file.type.match('^image/')) {
var img = document.createElement('img'); var img = document.createElement('img')
img.title = file.name; img.title = file.name
img.src = file.content; img.src = file.content
a.appendChild(img); a.appendChild(img)
} else if (file.type.match('^video/')) { } else if (file.type.match('^video/')) {
var video = document.createElement('video'); var video = document.createElement('video')
video.controls = true; video.controls = true
video.title = file.name; video.title = file.name
video.src = file.content; video.src = file.content
a.appendChild(video); a.appendChild(video)
} else { } else {
var img = document.createElement('img'); var img = document.createElement('img')
img.title = file.name; img.title = file.name
img.src = "images/Document_sans_PICOL-PIctorial-COmmunication-Language.svg"; img.src = "images/Document_sans_PICOL-PIctorial-COmmunication-Language.svg"
a.appendChild(img); a.appendChild(img)
}
$(id).append(a)
})
} }
$(id).append(a);
});
}
var recorder; var recorder
function done() { function done() {
if (recorder) { if (recorder) {
recorder.stop(); recorder.stop()
recorder.recording(function(data) { recorder.recording(function(data) {
previewfile(data, "video/webm"); previewfile(data, "video/webm")
abort(); abort()
}); })
}
} }
}
function abort() { function abort() {
if (recorder) { if (recorder) {
$("#videorecorder").hide(); $("#videorecorder").hide()
recorder.release(); recorder.release()
delete recorder; recorder = null; delete recorder recorder = null
}
} }
}
/// Record Video from builtin camera /// Record Video from builtin camera
function recordvideo() { function recordvideo() {
try { try {
abort(); abort()
$("#videorecorder").show(); $("#videorecorder").show()
recorder = new MediaStreamRecorder({ recorder = new MediaStreamRecorder({
video: { video: {
width: {ideal: 180}, width: {ideal: 180},
height: {ideal: 160} height: {ideal: 160}
}, },
audio: true audio: true
}); })
recorder.on("ready", function() { recorder.on("ready", function() {
$("#videorecorder video").attr("src", recorder.preview()); $("#videorecorder video").attr("src", recorder.preview())
$("#videorecorder video").css("width", 180); $("#videorecorder video").css("width", 180)
$("#videorecorder video").css("height", 160); $("#videorecorder video").css("height", 160)
$("#videorecorder video").attr("width", 180); $("#videorecorder video").attr("width", 180)
$("#videorecorder video").attr("height", 160); $("#videorecorder video").attr("height", 160)
recorder.start(); recorder.start()
}); })
} catch (e) { } catch (e) {
console.log(e); console.log(e)
error("cannot access camera", true); error("cannot access camera", true)
}
} }
}
function previewfile(content, type, name) { function previewfile(content, type, name) {
if (!name) name = guessfilename(type); if (!name) name = guessfilename(type)
if (type.match('^image/')) { if (type.match('^image/')) {
var img = document.createElement("img"); var img = document.createElement("img")
img.onload = function() { // resize image to maximum 400px img.onload = function() { // resize image to maximum 400px
var MAX = 400; var MAX = 400
var width = img.width; var width = img.width
var height = img.height; var height = img.height
if (width > MAX) { if (width > MAX) {
height *= MAX / width; height *= MAX / width
width = MAX; width = MAX
} }
if (height > MAX) { if (height > MAX) {
width *= MAX / height; width *= MAX / height
height = MAX; height = MAX
} }
var canvas = document.createElement("canvas"); var canvas = document.createElement("canvas")
canvas.width = width; canvas.width = width
canvas.height = height; canvas.height = height
var ctx = canvas.getContext("2d"); var ctx = canvas.getContext("2d")
ctx.drawImage(img, 0, 0, width, height); ctx.drawImage(img, 0, 0, width, height)
img.onload = function() { img.onload = function() {
filecontent.push({name: name, type: type, content: img.src}); filecontent.push({name: name, type: type, content: img.src})
$("#preview").append(img); $("#preview").append(img)
success('image is ready to be sent'); success('image is ready to be sent')
} }
img.src = canvas.toDataURL(file.type); img.src = canvas.toDataURL(file.type)
img.title = name+"\n"+size(img.src.length); img.title = name+"\n"+size(img.src.length)
} }
img.src=content; img.src=content
} else if (type.match('^video/')) { } else if (type.match('^video/')) {
filecontent.push({name: name, type: type, content: content}); filecontent.push({name: name, type: type, content: content})
var video = document.createElement("video"); var video = document.createElement("video")
video.setAttribute("controls", "controls"); video.setAttribute("controls", "controls")
video.setAttribute("loop", "loop"); video.setAttribute("loop", "loop")
video.setAttribute("src", content); video.setAttribute("src", content)
video.setAttribute("title", name+"\n"+size(content.length)); video.setAttribute("title", name+"\n"+size(content.length))
$("#preview").append(video); $("#preview").append(video)
} else { } else {
filecontent.push({name: name, type: type, content: content}); filecontent.push({name: name, type: type, content: content})
var img = document.createElement("img"); var img = document.createElement("img")
img.src = "images/Document_sans_PICOL-PIctorial-COmmunication-Language.svg"; img.src = "images/Document_sans_PICOL-PIctorial-COmmunication-Language.svg"
img.title = name+"\n"+size(content.length); img.title = name+"\n"+size(content.length)
$("#preview").append(img); $("#preview").append(img)
}
} }
}
/// Upload Attachment /// Upload Attachment
/** Prepares attachment to be sent in a message. If the attachment is /** Prepares attachment to be sent in a message. If the attachment is
an image, it resizes the image to 400px on the lager side. an image, it resizes the image to 400px on the lager side.
By now, only images are supported. By now, only images are supported.
Stores data in global variable @ref filecontent. */ Stores data in global variable @ref filecontent. */
function fileupload(evt) { function fileupload(evt) {
if (!window.FileReader) if (!window.FileReader)
return error("your browser does not support file upload", true); return error("your browser does not support file upload", true)
for (var i=0, f; f=evt.target.files[i]; ++i) { for (var i=0, f; f=evt.target.files[i]; ++i) {
var file = f; var file = f
var reader = new FileReader(); var reader = new FileReader()
reader.onload = function(evt) { reader.onload = function(evt) {
if (evt.target.error) return error("error reading file", true); if (evt.target.error) return error("error reading file", true)
if (evt.target.readyState==0) return notice("waiting for data …"); if (evt.target.readyState==0) return notice("waiting for data …")
if (evt.target.readyState==1) return notice("loading data …"); if (evt.target.readyState==1) return notice("loading data …")
previewfile(evt.target.result, file.type, file.name); previewfile(evt.target.result, file.type, file.name)
}
reader.readAsDataURL(file)
} }
reader.readAsDataURL(file);
} }
}
/// Sets Receiver's Name /// Sets Receiver's Name
/** Called when clicked on a receiver's name. Sets focus to the /** Called when clicked on a receiver's name. Sets focus to the
message text field. message text field.
@param name The receiver's name. */ @param name The receiver's name. */
function setreceiver(name) { function setreceiver(name) {
$("#recv").val(name); $("#recv").val(name)
checkpartner(name); checkpartner(name)
$("#msg").focus(); $("#msg").focus()
} }
var userMap = null; var userMap = null
function users(userlist) { function users(userlist) {
console.log("rcv-> users"); console.log("rcv-> users")
userMap = new Array(); userMap = new Array()
$("#allusers").empty(); $("#allusers").empty()
userlist.forEach(function(usr) { userlist.forEach(function(usr) {
userMap[usr.name] = usr.pubkey; userMap[usr.name] = usr.pubkey
$("#allusers").append('<option value="'+htmlenc(usr.name)+'">') $("#allusers").append('<option value="'+htmlenc(usr.name)+'">')
$("#allusers").hide(); $("#allusers").hide()
console.log(" user: "+usr.name); console.log(" user: "+usr.name)
}); })
localStorage.userMap = JSON.stringify(userMap); localStorage.userMap = JSON.stringify(userMap)
} }
function fail(msg) {
console.log("rcv-> fail");
error(msg);
}
function loggedin() {
console.log("rcv-> login");
success("login successful");
chat();
}
function user(usr) { function user(usr) {
if (usr.exists) console.log("rcv-> user("+usr.name+")"); if (usr.exists) console.log("rcv-> user("+usr.name+")")
else console.log("rcv-> user("+usr.name+"): name is available"); else console.log("rcv-> user("+usr.name+"): name is available")
if ($("#newuser").is(":visible") && usr.name==uid($('#user').val())) { if ($("#newuser").is(":visible") && usr.name==uid($('#user').val())) {
// same username as in the create user form // same username as in the create user form
$("#createuser").prop("disabled", usr.exists); // todo: check password $("#createuser").prop("disabled", usr.exists) // todo: check password
if (!usr.exists) { if (!usr.exists) {
username = usr.name; username = usr.name
success("user name "+usr.name+" is available"); success("user name "+usr.name+" is available")
} else { } else {
username = null; username = null
error("user name "+usr.name+" is in use", true); error("user name "+usr.name+" is in use", true)
} }
} }
if ($("#chat").is(":visible") && usr.name==uid($("#recv").val())) { // same username as in receiver if ($("#chat").is(":visible") && usr.name==uid($("#recv").val())) { // same username as in receiver
$('#send').prop("disabled", !usr.exists); $('#send').prop("disabled", !usr.exists)
$("label[for=send] img").css("opacity", usr.exists?"1.0":"0.4"); $("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)"); $("label[for=send] img").css("filter", usr.exists?"alpha(opacity=100)":"alpha(opacity=40)")
if (usr.exists) success("recipient exists"); if (usr.exists) success("recipient exists")
else error("unknown recipient", true); else error("unknown recipient", true)
} }
if (userMap == null) { if (userMap == null) {
if (localStorage.userMap) { if (localStorage.userMap) {
userMap = JSON.parse(localStorage.userMap); userMap = JSON.parse(localStorage.userMap)
} else { } else {
userMap = new Array(); userMap = new Array()
} }
} }
if (usr.exists && usr.pubkey && userMap[usr.name] != usr.pubkey) { if (usr.exists && usr.pubkey && userMap[usr.name] != usr.pubkey) {
userMap[usr.name] = usr.pubkey; userMap[usr.name] = usr.pubkey
$("#allusers").append('option value="'+htmlenc(usr.name)+'"') $("#allusers").append('option value="'+htmlenc(usr.name)+'"')
localStorage.userMap = JSON.stringify(userMap); localStorage.userMap = JSON.stringify(userMap)
}
} }
}
function queryuser(usr) { function queryuser(usr) {
console.log("query user: "+uid(usr)); console.log("query user: "+uid(usr))
socket.emit("user", uid(usr)); socket.emit("user", uid(usr))
} }
/// Get a user's public key. /// Get a user's public key.
/** The first time, gets it from the server, later from the cache. */ /** The first time, gets it from the server, later from the cache. */
function getPublicKey(user) { function getPublicKey(user) {
var deferredObject = $.Deferred(); var deferredObject = $.Deferred()
if (userMap && userMap[user]) deferredObject.resolve(userMap[user]); if (userMap && userMap[user]) deferredObject.resolve(userMap[user])
else deferredObject.reject("unknown user"); else deferredObject.reject("unknown user")
return deferredObject.promise(); return deferredObject.promise()
} }
/// Received a list of messages from server /// Received a list of messages from server
function messages(msgs) { function messages(msgs) {
console.log("rcv-> messages("+msgs.length+")"); console.log("rcv-> messages("+msgs.length+")")
if (!password || !privateKey()) if (!password || !privateKey())
return setTimeout(function() {emit("messages");}, 1000); // try again later return setTimeout(function() {emit("messages")}, 1000) // try again later
status("allmessages"); status("allmessages")
notice("load messages, please wait …"); notice("load messages, please wait …")
msgs.forEach(function(msg) {message(msg, true);}); msgs.forEach(function(msg) {message(msg, true)})
status("chat"); status("chat")
} }
/// Received a message from server /// Received a message from server
function message(m, internal) { function message(m, internal) {
if (!internal) console.log("rcv-> message("+m.user+")"); if (!internal) console.log("rcv-> message("+m.user+")")
if (!password || !privateKey()) return; if (!password || !privateKey()) return
var key=openpgp.key.readArmored(m.pubkey); var key=openpgp.key.readArmored(m.pubkey)
if (key.err) return error("key of sender unreadable", true); if (key.err) return error("key of sender unreadable", true)
var message = openpgp.message.readArmored(m.msg); var message = openpgp.message.readArmored(m.msg)
var privkey = privateKey().keys[0]; var privkey = privateKey().keys[0]
if (privkey.decrypt(password)) // prepare own key if (privkey.decrypt(password)) // prepare own key
openpgp.decrypt({
privateKeys: privkey,
publicKeys: key.keys,
message: message
}).then(function(msg) { // decryption succeded
openpgp.decrypt({ openpgp.decrypt({
privateKeys: privkey, privateKeys: privkey,
publicKeys: key.keys, publicKeys: key.keys,
message: message message: message
}).then(function(msg) { // decryption succeded }).then(function(msg) { // decryption succeded
// prepend message to list of messages // prepend message to list of messages
var message = JSON.parse(msg.text); var message = JSON.parse(msg.text)
$("#msgs") // todo: check msg.signatures[0].valid $("#msgs") // todo: check msg.signatures[0].valid
.prepend('<div id="id'+(m.id)+'" class="msg '+ .prepend('<div id="id'+(m.id)+'" class="msg '+
(m.user==userid()?"me":"other")+ (m.user==userid()?"me":"other")+
@ -710,113 +876,113 @@ function message(m, internal) {
'</span></div>'+ '</span></div>'+
'<div class="text">'+ '<div class="text">'+
htmlenc(message.text)+ htmlenc(message.text)+
'</div></div><div class="clear"/>'); '</div></div><div class="clear"/>')
// show attachments // show attachments
attachments(message.files, '#id'+m.id+' .text', m.user, new Date(m.time)); attachments(message.files, '#id'+m.id+' .text', m.user, new Date(m.time))
// calculate and show emoticons // calculate and show emoticons
$('#id'+m.id).emoticonize(); $('#id'+m.id).emoticonize()
if (!internal) beep(m.user); if (!internal) beep(m.user)
}).catch(function(e) { }).catch(function(e) {
// not for me // not for me
success(); success()
}); })
} }
/// Send Message To Server /// Send Message To Server
/** User wants to send a message. Encrypt message with own private and /** User wants to send a message. Encrypt message with own private and
the receiver's public key, then send it to the server. */ the receiver's public key, then send it to the server. */
function sendmessage(recv, txt) { function sendmessage(recv, txt) {
notice("1/3 preparing message …"); notice("1/3 preparing message …")
$("#message").prop(":disabled", true); $("#message").prop(":disabled", true)
getPublicKey(recv) // get receiver's public key getPublicKey(recv) // get receiver's public key
.done(function(pk) { .done(function(pk) {
var key=openpgp.key.readArmored(pk); var key=openpgp.key.readArmored(pk)
if (!pk||key.err) { if (!pk||key.err) {
$("#message").prop(":disabled", false); $("#message").prop(":disabled", false)
error("receiver's key not found", true); error("receiver's key not found", true)
return; return
} }
var privkey = privateKey().keys[0]; var privkey = privateKey().keys[0]
privkey.decrypt(password); // get own private key ready privkey.decrypt(password) // get own private key ready
var message = JSON.stringify({receiver: recv, text: txt, files: filecontent}); var message = JSON.stringify({receiver: recv, text: txt, files: filecontent})
notice("2/3 encrypting message …"); notice("2/3 encrypting message …")
openpgp.encrypt({publicKeys: key.keys.concat(publicKey().keys), openpgp.encrypt({publicKeys: key.keys.concat(publicKey().keys),
privateKeys: privkey, privateKeys: privkey,
data: message, data: message,
armor: false}) armor: false})
.then(function(msg) { // message is encrypted .then(function(msg) { // message is encrypted
notice("3/3 sending message …"); notice("3/3 sending message …")
emit("message", {user: userid(), content: msg}); emit("message", {user: userid(), content: msg})
clearmessage(); clearmessage()
}) })
.catch(function(e) { .catch(function(e) {
$("#message").prop(":disabled", false); $("#message").prop(":disabled", false)
error("encryption of message failed", true); error("encryption of message failed", true)
}); })
}) })
.fail(function(e) { .fail(function(e) {
$("#message").prop(":disabled", false); $("#message").prop(":disabled", false)
error("user not found", true); error("user not found", true)
}); })
} }
/// Check And Set Password /// Check And Set Password
/** Check if given password matches to decrypt the private key. If so, /** Check if given password matches to decrypt the private key. If so,
store it in global temporary variable @ref password and start the store it in global temporary variable @ref password and start the
chat. The password matches, when the private key can be decrypted. chat. The password matches, when the private key can be decrypted.
@param pwd The password to check. */ @param pwd The password to check. */
function setpw(pwd) { function setpw(pwd) {
if (privateKey().keys[0].decrypt(pwd)) { if (privateKey().keys[0].decrypt(pwd)) {
success("password matches"); success("password matches")
$("#removeKey").hide(); $("#removeKey").hide()
password = pwd; password = pwd
chat(); chat()
} else { } else {
notice("password does not match"); notice("password does not match")
}
} }
}
/// Create Password Entry Field /// Create Password Entry Field
/** Asks user for password. When user starts to enter it, it is /** Asks user for password. When user starts to enter it, it is
permanentely checked in setpw(). As soon as the password matches, permanentely checked in setpw(). As soon as the password matches,
setpw() continues automatically. No submit is required by the setpw() continues automatically. No submit is required by the
user. */ user. */
function getpwd() { function getpwd() {
if (password) return; if (password) return
$("#removeKey").show(); $("#removeKey").show()
status("getpwd"); status("getpwd")
} }
function deleteUser() { function deleteUser() {
var uid = userid(); var uid = userid()
localStorage.removeItem(pubkey); localStorage.removeItem(pubkey)
localStorage.removeItem(privkey); localStorage.removeItem(privkey)
error("user "+uid+" permanentely lost"); error("user "+uid+" permanentely lost")
} }
function removeKey() { function removeKey() {
togglemenu(); togglemenu()
$("#removeKey").hide(); $("#removeKey").hide()
status('forgotpassword'); status('forgotpassword')
} }
/// Main Chat Window /// Main Chat Window
/** Gets chat widgets from server and displays them. Starts timer for /** Gets chat widgets from server and displays them. Starts timer for
get() which polls for new messages. */ get() which polls for new messages. */
var firsttime = true; var firsttime = true
function chat() { function chat() {
if (!password) return getpwd(); if (!password) return getpwd()
status("chat"); status("chat")
if (firsttime && $('#msgs').is(':empty')) { if (firsttime && $('#msgs').is(':empty')) {
firsttime = false; firsttime = false
notice("getting previous messages, please wait …"); notice("getting previous messages, please wait …")
emit("messages"); emit("messages")
}
} }
}
/// Login User /// Login User
/** This is not really a login, it is just some kind of validation. /** 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 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 interesting to the client to make sure, everything is fine. User
is logged in the following way: User name and public key are sent is logged in the following way: User name and public key are sent
@ -826,81 +992,71 @@ function chat() {
server, it is created now. If user exists, but public key is server, it is created now. If user exists, but public key is
different, then this is a complete failure, something went different, then this is a complete failure, something went
terribly wrong. */ terribly wrong. */
function login() { function login() {
$("#username").html(userid()+"@"+hostname); $("#username").html(userid()+"@"+hostname)
emit("login", {name: userid(), emit("login", {name: userid(),
pubkey: localStorage.pubkey}); pubkey: localStorage.pubkey})
success("login sent to server"); success("login sent to server")
} }
/// Get And Display Form To Create New User /// Get And Display Form To Create New User
/** Shows user creation form. On submit, a private key is generated in /** Shows user creation form. On submit, a private key is generated in
createkeypair(), then login() creates the user. */ createkeypair(), then login() creates the user. */
function newuser() { function newuser() {
status("newuser"); status("newuser")
} }
/// Check if local storage is available /// Check if local storage is available
function checkLocalStorage() { function checkLocalStorage() {
var test = 'test'; var test = 'test'
try { try {
localStorage.setItem(test, test); localStorage.setItem(test, test)
localStorage.removeItem(test); localStorage.removeItem(test)
return true; return true
} catch(e) { } catch(e) {
status("nolocalstorage"); status("nolocalstorage")
error("local storage not available"); error("local storage not available")
}
return false
} }
return false;
}
/// Initial Function: Startup /// Initial Function: Startup
/** Decide whether to login or to create a new user */ /** Decide whether to login or to create a new user */
function start() { function start() {
$("#menu").hide(); $("#menu").hide()
//status("startup"); //status("startup")
if (checkLocalStorage()) if (checkLocalStorage())
try { try {
if (!userid()) { if (!userid()) {
newuser(); newuser()
} else { } else {
login(); login()
} }
} catch (m) { } catch (m) {
console.log(m.stack); console.log(m.stack)
error(m); error(m)
}
} }
}
function init() { function init() {
/// On Load, Call @ref start /// On Load, Call @ref start
$(window.onbeforeunload = function() { $(window.onbeforeunload = function() {
return "Are you sure you want to navigate away?"; return "Are you sure you want to navigate away?"
}); })
/// Allow Running in Background on Android /// Allow Running in Background on Android
document.addEventListener('deviceready', function () { document.addEventListener('deviceready', function () {
if (cordova && cordova.plugins.backgroundMode) { if (cordova && cordova.plugins.backgroundMode) {
cordova.plugins.backgroundMode.enable(); cordova.plugins.backgroundMode.enable()
} }
}, false); }, false)
socket.io.on("connect", connected); connectionstatus()
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")) if (openpgp.initWorker("openpgp.worker.min.js"))
console.log("asynchronous openpgp enabled"); console.log("asynchronous openpgp enabled")
else else
console.log("asynchronous openpgp failed"); console.log("asynchronous openpgp failed")
emit('users'); emit('users')
start(); start()
} }
/// Start Main Loop /// Start Main Loop
$(init); $(init)

0
nodejs/public/sounds/A-Tone-His_Self-1266414414.mp3 → nodejs/public/sounds/beep.mp3
Unescape View File

27
nodejs/views/index.ejs
Unescape View File

@ -30,7 +30,7 @@
<ul id="menu" style="display: none"> <ul id="menu" style="display: none">
<li onclick="backup()">Download Backup</li> <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="groups" onclick="groups()">Edit Groups</li>
<li id="removeKey" style="display: none" onclick="removeKey()">Password Forgotten</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> <li id="android-download" href="safechat.apk"><a href="safechat.apk">Download Android-App</a></li>
@ -182,6 +182,25 @@
</div> </div>
</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 --> <!-- Error: Missing JavaScript -->
<noscript> <noscript>
<h2>JavasScript Required!</h2> <h2>JavasScript Required!</h2>
@ -193,12 +212,6 @@
<p><a href="<%= package.documentation %>" target="_blank">more information</a></p> <p><a href="<%= package.documentation %>" target="_blank">more information</a></p>
</noscript> </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 --> <!-- Notice: Setup Messages -->
<div id="allmessages" style="display: none"> <div id="allmessages" style="display: none">
<p>Setting up all previous messages, please wait …</p> <p>Setting up all previous messages, please wait …</p>

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