Call a Lieberman ERPM API and return the auth token

call_liebsoft_erpm_api.js

/*
2016 Gordon Young, gjyoung1974@gmail.com
An example for calling the LiebSoft ERPM REST API
This Javascript calls the DoLogin2 method
and returns an API token for calling further methods
*/

var http = require('https');  //Call the API over HTTPS

//ignore Self-Signed SSL Certificate in test environment *** NEVER DO THIS IN PRODUCTION ***
process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";

/* Setup Values */

//API Properties
var Hostname = '13.85.10.4', Port = 443;
var DoLogin2Path = '/ERPMWebService/JSON/V2/AuthService.svc/DoLogin';

//ERPMWebService/AuthService.svc/REST

// username and password to collect API Token
var sUsername = 'app1', sPassword = 'Password1!'; //TODO source this from somewhere else

/* End Setup Values */

/* Main Application starts here */
//LDAP user vs static user:
//var auth_token_post_data = '{ "Authenticator":"ACME", "LoginType" : 2, "Password" : "n3wp@ss" , "Username" : "ACME\\\\testapp" }';

//static user configured in DB only
var auth_token_post_data = '{"LoginType": 1 ,"Password":"' + sPassword + '","Username":"' + sUsername + '"}';
var sAuthToken = f_Call_EPV_API(Hostname, Port,DoLogin2Path,auth_token_post_data);

/* Main Application ends here */

/* Utility functions follow below */
function f_Call_EPV_API(Hostname, Port, Path, post_data) {
  var post_req = null;
  var post_options = {
    hostname: Hostname, port: Port, path: Path, method: 'POST',
    headers: {
      'User-Agent': 'node.js',
      'Content-Type': 'application/json',
      'accept': 'application/json',
      'Cache-Control': 'no-cache',
      'Content-Length': post_data.length
    }
  };

  post_req = http.request(post_options, function (res) {
    //console.log('HTTP STATUS: ' + res.statusCode);
    //console.log('HEADERS: ' + JSON.stringify(res.headers));

    res.setEncoding('utf8');
    res.on('data', function (sAuthToken) {
      console.log('Auth Token: ' + sAuthToken);
    });
  });

  post_req.on('error', function (e) {
    console.log('problem with request: ' + e.message);
  });

  post_req.write(post_data);
  post_req.end();
  return sAuthToken;
}