skyriver/lib/credentials.js

SkyRiver Streaming Cloud server-side library for NodeJS

'use strict';

var util = require('./util'),
  config = require('./config');

function Credentials() {
  this.appKey =config.APP_KEY;
  this.appSecret = config.APP_SECRET;
}

Credentials.prototype.generateAccessToken = function(options, data) {
  var nonce = Date.now() / 1000;
  var sign = this._signRequest(options, data, nonce);
  var token = nonce + ':' + this.appKey + ':' + sign;
  return token;
}

Credentials.prototype._signRequest = function(options, body, nonce) {
  var contentType = options.headers['Content-Type'];

  var data = options.method + ' ' + options.path;
  data += '\nHost: ' + options.host;
  if (contentType) {
    data += '\nContent-Type: ' + contentType;
  }
  data += '\n\n';

  if (body && contentType && contentType != 'application/octet-stream') {
    data += body;
  }
  data += nonce;
  var digest = util.hmacSha1(data, this.appSecret);
  var sageDigest = util.base64ToUrlSafe(digest);

  return sageDigest;
}

module.exports = Credentials;