From 138eff9c9661835f52758974a62f994fede7f065 Mon Sep 17 00:00:00 2001 From: Hexagon Date: Thu, 18 Sep 2014 18:21:07 +0200 Subject: [PATCH] Initial commit --- public/css/default.css | 80 +++++++++ public/index.html | 27 +++ public/js/bootstrap.js | 30 ++++ public/js/cryptalk_modules/$.js | 129 ++++++++++++++ public/js/cryptalk_modules/cryptalk.js | 187 +++++++++++++++++++++ public/js/cryptalk_modules/templates.js | 50 ++++++ public/js/vendor/aes.v3.1.2.min.js | 10 ++ public/js/vendor/domReady.v2.0.1.min.js | 26 +++ public/js/vendor/fandango.v20140918.min.js | 23 +++ public/js/vendor/socket.io.v0.9.16.min.js | 2 + server.js | 39 +++++ 11 files changed, 603 insertions(+) create mode 100644 public/css/default.css create mode 100644 public/index.html create mode 100644 public/js/bootstrap.js create mode 100644 public/js/cryptalk_modules/$.js create mode 100644 public/js/cryptalk_modules/cryptalk.js create mode 100644 public/js/cryptalk_modules/templates.js create mode 100644 public/js/vendor/aes.v3.1.2.min.js create mode 100644 public/js/vendor/domReady.v2.0.1.min.js create mode 100644 public/js/vendor/fandango.v20140918.min.js create mode 100644 public/js/vendor/socket.io.v0.9.16.min.js create mode 100644 server.js diff --git a/public/css/default.css b/public/css/default.css new file mode 100644 index 0000000..0b178a7 --- /dev/null +++ b/public/css/default.css @@ -0,0 +1,80 @@ +/*------------------------------------*\ + GENERIC +\*------------------------------------*/ +html { + -webkit-box-sizing: border-box; /* Safari/Chrome, other WebKit */ + -moz-box-sizing: border-box; /* Firefox, other Gecko */ + box-sizing: border-box; /* Opera/IE 8+ */ +} + +*, *:before, *:after { + box-sizing: inherit; + + font-family: monospace, 'Courier New'; + font-size: 12px; +} + +body, html { + min-height: 100%; + background-color: #000000; + overflow: hidden; + padding: 0px; + margin:0px; + color: #00DD00; +} + +/*------------------------------------*\ + CHAT +\*------------------------------------*/ +#chat { + left: 0; + right: 0; + bottom: 40px; + position: absolute; + list-style-type: none; + padding:0; + margin:0; +} + +/* Messages */ +#chat li { + white-space: pre; + padding: 2px 10px; +} + +/* Message types */ +/* the `i` element hold the actual message */ +#chat i { + font-style: normal; +} +#chat i.info { color: #7777ff; } +#chat i.server { color: #999999; } +#chat i.error { color: #ff7777; } +#chat i.message { color: #eeeeee; } + +/*------------------------------------*\ + INPUT +\*------------------------------------*/ +#input_wrapper { + right:0; + bottom:0; + left:0; + position: absolute; + + height:40px; +} + +#input { + top: 0; + bottom: 0; + width: 100%; + position: absolute; + + border: 0; + outline: 0; + + padding: 5px 5px 5px 15px; + + color: #00dd00; + background-color:#141414; +} \ No newline at end of file diff --git a/public/index.html b/public/index.html new file mode 100644 index 0000000..b286b2c --- /dev/null +++ b/public/index.html @@ -0,0 +1,27 @@ + + + + + Cryptalk + + + + + + + + + + +
+ +
+ + + + + + + \ No newline at end of file diff --git a/public/js/bootstrap.js b/public/js/bootstrap.js new file mode 100644 index 0000000..ec63521 --- /dev/null +++ b/public/js/bootstrap.js @@ -0,0 +1,30 @@ +// This Javascript file is the only file besides fandango.js that will be fetched through DOM. + +// Setup fandango +fandango.defaults({ + baseUrl: 'js/cryptalk_modules/', + paths: { + websocket: 'https://cdnjs.cloudflare.com/ajax/libs/socket.io/0.9.16/socket.io.min.js', + aes: 'https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.2/rollups/aes.js', + domReady: 'https://cdnjs.cloudflare.com/ajax/libs/require-domReady/2.0.1/domReady.min.js' + }, + + // CryptoJs AES does not support AMD modules. We'll have to create a shim. + shim: { + aes: { + exports: function () { // String (the global variable name) or a function; returning the desired variable. + return CryptoJS.AES; + } + } + } +}); + +// Fetch our modules asynchronously, when the DOM is finished loading. +//define('bootstrap_module', ['domReady'], function (domReady) { +// domReady(function () { +// require(['cryptalk']); +// }); +//}); + +// No need to wait for DOM - the Javascript is at the bottom +require(['cryptalk']); \ No newline at end of file diff --git a/public/js/cryptalk_modules/$.js b/public/js/cryptalk_modules/$.js new file mode 100644 index 0000000..8683209 --- /dev/null +++ b/public/js/cryptalk_modules/$.js @@ -0,0 +1,129 @@ +define('$', ['fandango', 'websocket', 'aes'], function (fandango, websocket, aes) { + var exports = { + selector: 0, + utilities: {}, + prototype: {} + }, + + // Shortcuts + utils = exports.utilities, + proto = exports.prototype, + + each = fandango.each; + + // The DOM selector engine + exports.selector = function (selector) { + var match, + matches = []; + + if (selector === document) { + matches.push(document); + } else { + selector = selector.slice(1); + + if (match = document.getElementById(selector)) { + matches.push(match); + } + } + + // Must ALWAYS return a native array: [] + return matches; + }; + + // Namespace AES + utils.AES = { + decrypt: aes.decrypt, + encrypt: aes.encrypt + }; + + // Namespace encode + utils.AES = { + decrypt: function (string, fgh) { + return aes.decrypt(string, fgh).toString(CryptoJS.enc.Utf8); + }, + encrypt: function (string, fgh) { + return aes.encrypt(string, fgh).toString(); + }, + }; + + // Namespace websocket + utils.Websocket = { + connect: websocket.connect, + on: websocket.on + }; + + utils.ssplit = function (string, seperator) { + var components = string.split(seperator); + return [components.shift(), components.join(seperator)]; + }; + + utils.activeElement = function () { + try { return document.activeElement; } catch (e) {} + } + + /** + * A very simple implementation of sprintf() + * @param {} str [description] + * @param {[type]} map [description] + * @return {[type]} [description] + */ + utils.template = function (str, map) { + return str && str.replace(/{(\w+)}/gi, function(outer, inner) { + return map.hasOwnProperty(inner) ? map[inner] : outer /* '' */; + }); + }; + + // Originating from mustasche.js + // https://github.com/janl/mustache.js/blob/master/mustache.js#L43 + utils.escapeHtml = (function () { + var pattern = /[&<>"'\/]/g, + entities = { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + "'": ''', + '/': '/' + }; + + return function (string) { + return String(string).replace(pattern, function (s) { + return entities[s]; + }); + }; + }()); + + // Extremely naive implementations of .html() and .append() + proto.html = function (string) { + each(this, function (element) { + element.innerHTML = string; + }); + + return this; + }; + + proto.append = function (string) { + each(this, function (element) { + element.innerHTML += string; + }); + + return this; + }; + + // Extremely naive implementations of .on() + proto.on = function (eventName, callback) { + each(this, function (element) { + element.addEventListener(eventName, callback); + }); + + return this; + }; + + proto.focus = function () { + this[0].focus(); + + return this; + }; + + return exports; +}) \ No newline at end of file diff --git a/public/js/cryptalk_modules/cryptalk.js b/public/js/cryptalk_modules/cryptalk.js new file mode 100644 index 0000000..75cc3f4 --- /dev/null +++ b/public/js/cryptalk_modules/cryptalk.js @@ -0,0 +1,187 @@ +// Main cryptalk module. Will be called by bootstrap.js when the DOM is ready to interact with. +define('cryptalk', { + data: { + // If no host is given it will default to localhost. + host: 'http://www.huset.nu:8080' + }, + compiles: ['$'], + requires: ['templates'] +}, function ($, requires, data) { + var socket, + key, + room, + hash, + + // Collection of DOM components + components = { + chat: $('#chat'), + input: $('#input') + }, + + // Shortcut + templates = requires.templates, + + // Adds a new message to the DOM + post = function (type, text, clearChat, clearBuffer) { + var tpl = templates.post[type], + post = $.template(tpl, text && { + text: text + }); + + // Always clear the input after a post + if (clearBuffer) { + components.input[0].value = ''; + } + + // Append the post to the chat DOM element + components.chat[clearChat ? 'html' : 'append'](post); + }, + + // Chat related commands + commands = { + help: function () { + post('info', templates.help); + }, + + clear: function () { + components.chat.html(''); + components.input[0].value = ''; + }, + + leave: function () { + socket.emit('room:leave', room); + }, + + key: function (payload) { + // Make sure the key meets the length requirements + if (payload.length < 8) { + return post('info', templates.messages.key_weak); + } + + // Set key + key = payload; + + // Inform that the key has been set + post('info', (room ? templates.messages.key_ok_ready : templates.messages.key_ok_but_no_room)); + }, + + join: function (payload) { + return ( + room + ? post('info', $.template(templates.messages.already_in_room, { roomName: room})) + : socket.emit('room:join', payload) + ); + }, + + create: function (payload) { + socket.emit('room:create'); + } + }, + + // Handler for the document`s keyDown-event. + onKeyDown = function (e) { + var buffer, + parts, + payload, + command; + + // The Document object is bound to this element. + // If the active element is not the input, focus on it and exit the function. + if (components.input[0] !== $.activeElement()) { + return components.input.focus(); + } + + // Return immediatly if the buffer is empty or if the hit key was not + if (e.keyCode !== 13 || !(buffer = components.input[0].value)) { + return; + } + + // Handle command + if (buffer[0] === '/') { + parts = $.ssplit(buffer.slice(1), ' '); + command = parts[0]; + payload = parts[1]; + + // Check that there is an handler for this command + if (!commands[command]) { + return post('error', $.template(templates.messages.unrecognized_command, { commandName: command })); + } + + // Execute command handler + commands[command](payload); + } else /* Handle ordinary message */ { + // Make sure that the users has joined a room + if (!room) { + return post('error', templates.messages.msg_no_room); + } + + // And that a valid key is set + if (!key) { + return post('error', templates.messages.msg_no_key); + } + + // Before sending the message. + // Encrypt message using room UUID as salt and key as pepper. + socket.emit('message:send', { + room: room, + msg: $.AES.encrypt(buffer, room + key) + }); + + // Adn the the buffer + components.input[0].value = ''; + } + }; + + // Connect to server + socket = $.Websocket.connect(data.host); + + // Bind socket events + socket + .on('connect', function () { + $(document).on('keydown', onKeyDown); + components.input.focus(); + }) + + .on('room:created', function (data) { + socket.emit('room:join', data); + }) + + .on('room:joined', function (data) { + room = data; + post('info', $.template(templates.messages.joined_room, { roomName: room })); + }) + + .on('room:left', function () { + post('info', $.template(templates.messages.left_room, { roomName: room })); + room = false; + }) + + .on('message:send', function (data) { + var decrypted = $.AES.decrypt(data, room + key), + sanitized = $.escapeHtml(decrypted); + + if (!decrypted) { + post('info', templates.messages.unable_to_decrypt); + } else { + // Post the message, but do not clear either the chat nor the buffer. + post('message', sanitized, false, false); + } + }) + + .on('message:server', function (data) { + post('server', data); + }); + + // Post the help/welcome message + post('info', templates.help, true); + + // It's possible to provide room and key using the hashtag. + // The room and key is then seperated by semicolon (room:key). + // If there is no semicolon present, the complete hash will be treated as the room name and the key has to be set manually. + if (hash = window.location.hash) { + parts = hash.slice(1).split(':'); + + parts[0] && commands.join(parts[0]); + parts[1] && commands.key(parts[1]); + } +}); \ No newline at end of file diff --git a/public/js/cryptalk_modules/templates.js b/public/js/cryptalk_modules/templates.js new file mode 100644 index 0000000..1f87fea --- /dev/null +++ b/public/js/cryptalk_modules/templates.js @@ -0,0 +1,50 @@ +// The templating function only supports variables. +// Define a variable as so: {variable_name} +define({ + help: '' + + '
  • \n' + + 'Cryptalk, encrypted instant chat. \n' + + ' \n' + + '---------------------------------------------------------------------------------- \n' + + ' \n' + + 'Available commands: \n' + + ' /create Creates a room \n' + + ' /join RoomId Joins a room \n' + + ' /leave RoomId Leaves a room \n' + + ' /key OurStrongPassphrase Sets the password used for \n' + + ' encryption/decryption \n' + + ' /clear Clears on-screen buffer \n' + + ' /help This \n' + + ' \n' + + ' Besides that, it\'s just to talk! \n' + + ' \n' + + 'Code available for review at https://www.github.com/hexagon/cryptalk \n' + + ' \n' + + '--------------------------------------------------------------------------------- \n' + + '
    • ', + + post: { + info: '
  • INF> {text}
    • ', + server: '
  • SRV> {text}
    • ', + error: '
  • ERR> {text}
    • ', + message: '
  • MSG> {text}
    • ' + }, + + messages: { + key_weak: 'Hmm, that\'s a weak key, try again...', + key_ok_ready: 'Key set, you can now start communicating.', + key_ok_but_no_room: 'Key set, you can now join a room and start communicating.', + msg_no_room: 'You have to join a room before sending messages. See /help.', + msg_no_key: 'You have to set an encryption key before sending a message. See /help.', + + // Available variables: 'commandName' + unrecognized_command: 'Unrecognized command: "{commandName}"', + + // Available variables: 'roomName' + joined_room: 'Joined room {roomName}', + left_room: 'Left room {roomName}', + already_in_room: 'You are already in room {roomName}, stoopid.', + + unable_to_decrypt: 'Unabled to decrypt received message, keys does not match.' + } +}); \ No newline at end of file diff --git a/public/js/vendor/aes.v3.1.2.min.js b/public/js/vendor/aes.v3.1.2.min.js new file mode 100644 index 0000000..6834e42 --- /dev/null +++ b/public/js/vendor/aes.v3.1.2.min.js @@ -0,0 +1,10 @@ +/* +CryptoJS v3.1.2 +code.google.com/p/crypto-js +(c) 2009-2013 by Jeff Mott. All rights reserved. +code.google.com/p/crypto-js/wiki/License +*/ +(function(){for(var q=CryptoJS,x=q.lib.BlockCipher,r=q.algo,j=[],y=[],z=[],A=[],B=[],C=[],s=[],u=[],v=[],w=[],g=[],k=0;256>k;k++)g[k]=128>k?k<<1:k<<1^283;for(var n=0,l=0,k=0;256>k;k++){var f=l^l<<1^l<<2^l<<3^l<<4,f=f>>>8^f&255^99;j[n]=f;y[f]=n;var t=g[n],D=g[t],E=g[D],b=257*g[f]^16843008*f;z[n]=b<<24|b>>>8;A[n]=b<<16|b>>>16;B[n]=b<<8|b>>>24;C[n]=b;b=16843009*E^65537*D^257*t^16843008*n;s[f]=b<<24|b>>>8;u[f]=b<<16|b>>>16;v[f]=b<<8|b>>>24;w[f]=b;n?(n=t^g[g[g[E^t]]],l^=g[g[l]]):n=l=1}var F=[0,1,2,4,8, +16,32,64,128,27,54],r=r.AES=x.extend({_doReset:function(){for(var c=this._key,e=c.words,a=c.sigBytes/4,c=4*((this._nRounds=a+6)+1),b=this._keySchedule=[],h=0;h>>24]<<24|j[d>>>16&255]<<16|j[d>>>8&255]<<8|j[d&255]):(d=d<<8|d>>>24,d=j[d>>>24]<<24|j[d>>>16&255]<<16|j[d>>>8&255]<<8|j[d&255],d^=F[h/a|0]<<24);b[h]=b[h-a]^d}e=this._invKeySchedule=[];for(a=0;aa||4>=h?d:s[j[d>>>24]]^u[j[d>>>16&255]]^v[j[d>>> +8&255]]^w[j[d&255]]},encryptBlock:function(c,e){this._doCryptBlock(c,e,this._keySchedule,z,A,B,C,j)},decryptBlock:function(c,e){var a=c[e+1];c[e+1]=c[e+3];c[e+3]=a;this._doCryptBlock(c,e,this._invKeySchedule,s,u,v,w,y);a=c[e+1];c[e+1]=c[e+3];c[e+3]=a},_doCryptBlock:function(c,e,a,b,h,d,j,m){for(var n=this._nRounds,f=c[e]^a[0],g=c[e+1]^a[1],k=c[e+2]^a[2],p=c[e+3]^a[3],l=4,t=1;t>>24]^h[g>>>16&255]^d[k>>>8&255]^j[p&255]^a[l++],r=b[g>>>24]^h[k>>>16&255]^d[p>>>8&255]^j[f&255]^a[l++],s= +b[k>>>24]^h[p>>>16&255]^d[f>>>8&255]^j[g&255]^a[l++],p=b[p>>>24]^h[f>>>16&255]^d[g>>>8&255]^j[k&255]^a[l++],f=q,g=r,k=s;q=(m[f>>>24]<<24|m[g>>>16&255]<<16|m[k>>>8&255]<<8|m[p&255])^a[l++];r=(m[g>>>24]<<24|m[k>>>16&255]<<16|m[p>>>8&255]<<8|m[f&255])^a[l++];s=(m[k>>>24]<<24|m[p>>>16&255]<<16|m[f>>>8&255]<<8|m[g&255])^a[l++];p=(m[p>>>24]<<24|m[f>>>16&255]<<16|m[g>>>8&255]<<8|m[k&255])^a[l++];c[e]=q;c[e+1]=r;c[e+2]=s;c[e+3]=p},keySize:8});q.AES=x._createHelper(r)})(); \ No newline at end of file diff --git a/public/js/vendor/domReady.v2.0.1.min.js b/public/js/vendor/domReady.v2.0.1.min.js new file mode 100644 index 0000000..f61f2b9 --- /dev/null +++ b/public/js/vendor/domReady.v2.0.1.min.js @@ -0,0 +1,26 @@ +/* + +MIT License +----------- + +Copyright (c) 2010-2011, The Dojo Foundation + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ +define(function(){"use strict";function e(e){var t;for(t=0;e.length>t;t+=1)e[t](h)}function t(){var t=c;l&&t.length&&(c=[],e(t))}function i(){l||(l=!0,o&&clearInterval(o),t())}function n(e){return l?e(h):c.push(e),n}var r,s,o,a="undefined"!=typeof window&&window.document,l=!a,h=a?document:null,c=[];if(a){if(document.addEventListener)document.addEventListener("DOMContentLoaded",i,!1),window.addEventListener("load",i,!1);else if(window.attachEvent){window.attachEvent("onload",i),s=document.createElement("div");try{r=null===window.frameElement}catch(u){}s.doScroll&&r&&window.external&&(o=setInterval(function(){try{s.doScroll(),i()}catch(e){}},30))}"complete"===document.readyState&&i()}return 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