strong-soap/lib/security/WSSecurityCert.js

A minimal node SOAP client

'use strict';

var g = require('../globalize');
var optional = require('optional');
var ursa = optional('ursa');
var fs = require('fs');
var path = require('path');
var SignedXml = require('xml-crypto').SignedXml;
var uuid = require('uuid');
var Security = require('./security');
var xmlHandler = require('../parser/xmlHandler');

function addMinutes(date, minutes) {
  return new Date(date.getTime() + minutes * 60000);
}

function dateStringForSOAP(date) {
  return date.getUTCFullYear() + '-' + ('0' + (date.getUTCMonth() + 1)).slice(-2) + '-' + ('0' + date.getUTCDate()).slice(-2) + 'T' + ('0' + date.getUTCHours()).slice(-2) + ":" + ('0' + date.getUTCMinutes()).slice(-2) + ":" + ('0' + date.getUTCSeconds()).slice(-2) + "Z";
}

function generateCreated() {
  return dateStringForSOAP(new Date());
}

function generateExpires() {
  return dateStringForSOAP(addMinutes(new Date(), 10));
}

function insertStr(src, dst, pos) {
  return [dst.slice(0, pos), src, dst.slice(pos)].join('');
}

function generateId() {
  return uuid.v4().replace(/-/gm, '');
}

class WSSecurityCert extends Security {
  constructor(privatePEM, publicP12PEM, password, encoding) {
    super();
    if (!ursa) {
      throw new Error(g.f('Module {{ursa}} must be installed to use {{WSSecurityCert}}'));
    }
    this.privateKey = ursa.createPrivateKey(privatePEM, password, encoding);
    this.publicP12PEM = publicP12PEM.toString().replace('-----BEGIN CERTIFICATE-----', '').replace('-----END CERTIFICATE-----', '').replace(/(\r\n|\n|\r)/gm, '');

    this.signer = new SignedXml();
    this.signer.signingKey = this.privateKey.toPrivatePem();
    this.x509Id = 'x509-' + generateId();

    var references = ['http://www.w3.org/2000/09/xmldsig#enveloped-signature', 'http://www.w3.org/2001/10/xml-exc-c14n#'];

    this.signer.addReference('//*[local-name(.)=\'Body\']', references);
    this.signer.addReference('//*[local-name(.)=\'Timestamp\']', references);

    var _this = this;
    this.signer.keyInfoProvider = {};
    this.signer.keyInfoProvider.getKeyInfo = function (key) {
      var x509Id = _this.x509Id;
      var xml = `<wsse:SecurityTokenReference>
    <wsse:Reference URI="${x509Id}" ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3"/>
    </wsse:SecurityTokenReference>`;
      return xml;
    };
  }

  postProcess(headerElement, bodyElement) {
    this.created = generateCreated();
    this.expires = generateExpires();

    var binaryToken = this.publicP12PEM,
        created = this.created,
        expires = this.expires,
        id = this.x509Id;

    var secElement = headerElement.element('wsse:Security').attribute('xmlns:wsse', 'http://docs.oasis-open.org/wss/2004/01/' + 'oasis-200401-wss-wssecurity-secext-1.0.xsd').attribute('xmlns:wsu', 'http://docs.oasis-open.org/wss/2004/01/' + 'oasis-200401-wss-wssecurity-utility-1.0.xsd').attribute('soap:mustUnderstand', '1');
    secElement.element('wsse:BinarySecurityToken').attribute('EncodingType', 'http://docs.oasis-open.org/wss/2004/01/' + 'oasis-200401-wss-soap-message-security-1.0#Base64Binary').attribute('ValueType', 'http://docs.oasis-open.org/wss/2004/01/' + 'oasis-200401-wss-x509-token-profile-1.0#X509v3').attribute('wsu:Id', id).text(binaryToken);
    var tsElement = secElement.element('wsu:Timestamp').attribute('wsu:Id', '_1');
    tsElement.element('wsu:Created', created);
    tsElement.element('wsu:Expires', expires);

    var xmlWithSec = headerElement.doc().end({ pretty: true });

    this.signer.computeSignature(xmlWithSec);
    var sig = this.signer.getSignatureXml();

    xmlHandler.parseXml(secElement, sig);
  }
}

module.exports = WSSecurityCert;