telebit.js/bin/stunnel.js

#!/usr/bin/env node
(function () {
'use strict';

var pkg = require('../package.json');

var program = require('commander');
var url = require('url');
var stunnel = require('../wsclient.js');

function parseProxy(location) {
  // http:john.example.com:3000
  // http://john.example.com:3000
  var parts = location.split(':');
  //var dual = false;
  if (/\./.test(parts[0])) {
    //dual = true;
    parts[2] = parts[1];
    parts[1] = parts[0];
    parts[0] = 'https';
  }
  parts[0] = parts[0].toLowerCase();
  parts[1] = parts[1].toLowerCase().replace(/(\/\/)?/, '') || '*';
  parts[2] = parseInt(parts[2], 10) || 0;
  if (!parts[2]) {
    // TODO grab OS list of standard ports?
    if ('http' === parts[0]) {
      parts[2] = 80;
    }
    else if ('https' === parts[0]) {
      parts[2] = 443;
    }
    else {
      throw new Error("port must be specified - ex: tls:*:1337");
    }
  }

  return {
    protocol: parts[0]
  , hostname: parts[1]
  , port: parts[2]
  };
}

function collectProxies(val, memo) {
  var vals = val.split(/,/g);
  vals.map(parseProxy).forEach(function (val) {
    memo.push(val);
  });

  return memo;
}

program
  .version(pkg.version)
  //.command('jsurl <url>')
  .arguments('<url>')
  .action(function (url) {
    program.url = url;
  })
  .option('-k --insecure', 'Allow TLS connections to stunneld without valid certs (rejectUnauthorized: false)')
  .option('--locals <LINE>', 'comma separated list of <proto>:<//><servername>:<port> to which matching incoming http and https should forward (reverse proxy). Ex: https://john.example.com,tls:*:1337', collectProxies, [ ]) // --reverse-proxies
  .option('--stunneld <URL>', 'the domain (or ip address) at which you are running stunneld.js (the proxy)') // --proxy
  .option('--secret <STRING>', 'the same secret used by stunneld (used for JWT authentication)')
  .option('--token <STRING>', 'a pre-generated token for use with stunneld (instead of generating one with --secret)')
  .parse(process.argv)
  ;

program.stunneld = program.stunneld || 'wss://pokemap.hellabit.com:3000';

var jwt = require('jsonwebtoken');
var domainsMap = {};
var tokenData = {
  name: null
, domains: null
};
var location = url.parse(program.stunneld);

if (!location.protocol || /\./.test(location.protocol)) {
  program.stunneld = 'wss://' + program.stunneld;
  location = url.parse(program.stunneld);
}
program.stunneld = location.protocol + '//' + location.hostname + (location.port ? ':' + location.port : '');

program.locals.forEach(function (proxy) {
  domainsMap[proxy.hostname] = true;
});
tokenData.domains = Object.keys(domainsMap);
tokenData.name = tokenData.domains[0];

program.token = program.token || jwt.sign(tokenData, program.secret || 'shhhhh');

program.net = {
  createConnection: function (info, cb) {
    // data is the hello packet / first chunk
    // info = { data, servername, port, host, remoteFamily, remoteAddress, remotePort }
    var net = require('net');
    // socket = { write, push, end, events: [ 'readable', 'data', 'error', 'end' ] };
    var socket = net.createConnection({ port: info.port, host: info.host }, cb);
    return socket;
  }
};

program.locals.forEach(function (proxy) {
  console.log('[local proxy]', proxy.protocol + '://' + proxy.hostname + ':' + proxy.port);
});

stunnel.connect(program);

}());