Sample code for 30+ languages & platforms
React Native Requires Chilkat v11.0.0+

Hungary NAV Token Exchange

See more Hungary NAV Invoicing Examples

Demonstrates the tokenExchange request for the Hungarian NAV Online Invoicing System REST API v2.0.

Chilkat React Native Downloads

React Native
import { CkDateTime, Crypt2, Http, HttpResponse, Prng, StringBuilder, Xml } from '@chilkat/react-native'

async function chilkatExample() {
  // This example assumes the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // Build the following XML:

  // Use this online tool to generate code from sample XML: 
  // Generate Code to Create XML

  // <?xml version="1.0" encoding="UTF-8"?>
  // <TokenExchangeRequest xmlns="http://schemas.nav.gov.hu/OSA/2.0/api">
  // 	<header>
  // 		<requestId>RID896801578348</requestId>
  // 		<timestamp>2019-09-11T10:55:31.440Z</timestamp>
  // 		<requestVersion>2.0</requestVersion>
  // 		<headerVersion>1.0</headerVersion>
  // 	</header>
  // 	<user>
  // 		<login>lwilsmn0uqdxe6u</login>
  // 		<passwordHash>2F43840A882CFDB7DB0FEC07D419D030D864B47B6B541DC280EF81B937B7A176E33C052B0D26638CC18A7A2C08D8D311733078A774BF43F6CA57FE8CD74DC28E</passwordHash>
  // 		<taxNumber>11111111</taxNumber>
  // 		<requestSignature>B4B5E0F197BFFD3DF69BCC98D3BE775F65FD5445EEF95C9D6B6C59425F2B81C4F6DA1FD563B0C7E7D98AF1E1725E5C63C2803B5D3A93D1C02ED354AC92F2CC94</requestSignature>
  // 		<!--<signKey>ac-ac3a-7f661bff7d342N43CYX4U9FG</signKey>-->
  // 	</user>
  // 	<software>
  // 		<softwareId>123456789123456789</softwareId>
  // 		<softwareName>string</softwareName>
  // 		<softwareOperation>LOCAL_SOFTWARE</softwareOperation>
  // 		<softwareMainVersion>string</softwareMainVersion>
  // 		<softwareDevName>string</softwareDevName>
  // 		<softwareDevContact>string</softwareDevContact>
  // 		<softwareDevCountryCode>HU</softwareDevCountryCode>
  // 		<softwareDevTaxNumber>string</softwareDevTaxNumber>
  // 	</software>
  // </TokenExchangeRequest>

  const crypt = new Crypt2();

  const dtNow = new CkDateTime();
  dtNow.setFromCurrentSystemTime();
  console.log(dtNow.getAsTimestamp(false));

  // The hash algorithm for the password is SHA512 (not SHA3-512).
  crypt.hashAlgorithm = 'sha512';
  crypt.encodingMode = 'hex';
  const myPassword = 'my-password';
  const passwordHash = crypt.hashStringENC(myPassword);

  // Generate a random request ID like "RID215118906689"
  const prng = new Prng();
  const sbRequestId = new StringBuilder();
  sbRequestId.append('RID');
  sbRequestId.append(prng.randomString(12, true, false, false));
  console.log(`generated requestId = ${sbRequestId.getAsString()}`);

  // Calculate the requestSignature
  crypt.hashAlgorithm = 'sha3-512';
  const signatureKey = 'ce-8f5e-215119fa7dd621DLMRHRLH2S';

  const sbFinalHashBase = new StringBuilder();

  // First append the timestamp because we are going to remove certain chars/parts.
  sbFinalHashBase.append(dtNow.getAsTimestamp(false));
  let numReplaced = sbFinalHashBase.replace('Z', '');
  numReplaced = sbFinalHashBase.replace('-', '');
  numReplaced = sbFinalHashBase.replace(':', '');
  numReplaced = sbFinalHashBase.replace('T', '');

  // Prepend the requestId and append the signatureKey
  sbFinalHashBase.prepend(sbRequestId.getAsString());
  sbFinalHashBase.append(signatureKey);

  const requestSignature = crypt.hashStringENC(sbFinalHashBase.getAsString());

  const xml = new Xml();
  xml.tag = 'TokenExchangeRequest';
  xml.addAttribute('xmlns', 'http://schemas.nav.gov.hu/OSA/2.0/api');
  xml.updateChildContent('header|requestId', sbRequestId.getAsString());
  xml.updateChildContent('header|timestamp', dtNow.getAsTimestamp(false));
  xml.updateChildContent('header|requestVersion', '2.0');
  xml.updateChildContent('header|headerVersion', '1.0');
  xml.updateChildContent('user|login', 'lwilsmn0uqdxe6u');
  xml.updateChildContent('user|passwordHash', passwordHash);
  xml.updateChildContent('user|taxNumber', '11111111');
  xml.updateChildContent('user|requestSignature', requestSignature);
  xml.updateChildContent('software|softwareId', '123456789123456789');
  xml.updateChildContent('software|softwareName', 'string');
  xml.updateChildContent('software|softwareOperation', 'LOCAL_SOFTWARE');
  xml.updateChildContent('software|softwareMainVersion', 'string');
  xml.updateChildContent('software|softwareDevName', 'string');
  xml.updateChildContent('software|softwareDevContact', 'string');
  xml.updateChildContent('software|softwareDevCountryCode', 'HU');
  xml.updateChildContent('software|softwareDevTaxNumber', 'string');

  // POST the XML to https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/tokenExchange
  const http = new Http();
  http.accept = 'application/xml';
  const endpoint = 'https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/tokenExchange';
  const resp = new HttpResponse();
  try {
    await http.httpStrAsync('POST', endpoint, xml.getXml(), 'utf-8', 'application/xml', resp);
  } catch {
    console.log(http.lastErrorText);
    return;
  }

  console.log(`Response status code = ${resp.statusCode}`);

  const respXml = new Xml();
  respXml.loadXml(resp.bodyStr);
  console.log('Response body:');
  console.log(respXml.getXml());

  // Save our exchange token to a file to be used for subsequent requests.
  respXml.saveXml('qa_data/tokens/nav_exchange_token.xml');

  // The result looks like this:

  // <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
  // <TokenExchangeResponse xmlns="http://schemas.nav.gov.hu/OSA/2.0/api" xmlns:ns2="http://schemas.nav.gov.hu/OSA/2.0/data">
  //     <header>
  //         <requestId>RID789246611489</requestId>
  //         <timestamp>2020-03-25T14:14:36Z</timestamp>
  //         <requestVersion>2.0</requestVersion>
  //         <headerVersion>1.0</headerVersion>
  //     </header>
  //     <result>
  //         <funcCode>OK</funcCode>
  //     </result>
  //     <software>
  //         <softwareId>123456789123456789</softwareId>
  //         <softwareName>string</softwareName>
  //         <softwareOperation>LOCAL_SOFTWARE</softwareOperation>
  //         <softwareMainVersion>string</softwareMainVersion>
  //         <softwareDevName>string</softwareDevName>
  //         <softwareDevContact>string</softwareDevContact>
  //         <softwareDevCountryCode>HU</softwareDevCountryCode>
  //         <softwareDevTaxNumber>string</softwareDevTaxNumber>
  //     </software>
  //     <encodedExchangeToken>2lR5v57Tl ... 9n4tIWCYgjKQ==</encodedExchangeToken>
  //     <tokenValidityFrom>2020-03-25T15:14:36.987+01:00</tokenValidityFrom>
  //     <tokenValidityTo>2020-03-25T15:19:36.987+01:00</tokenValidityTo>
  // </TokenExchangeResponse>

  // Use this online tool to generate parsing code from sample XML: 
  // Generate Parsing Code from XML

  const tokenExchangeResponseXmlns = respXml.getAttrValue('xmlns');
  const tokenExchangeResponseXmlnsNs2 = respXml.getAttrValue('xmlns:ns2');
  const requestId = respXml.getChildContent('header|requestId');
  const timestamp = respXml.getChildContent('header|timestamp');
  const requestVersion = respXml.getChildContent('header|requestVersion');
  const headerVersion = respXml.getChildContent('header|headerVersion');
  const funcCode = respXml.getChildContent('result|funcCode');
  const softwareId = respXml.getChildContent('software|softwareId');
  const softwareName = respXml.getChildContent('software|softwareName');
  const softwareOperation = respXml.getChildContent('software|softwareOperation');
  const softwareMainVersion = respXml.getChildContent('software|softwareMainVersion');
  const softwareDevName = respXml.getChildContent('software|softwareDevName');
  const softwareDevContact = respXml.getChildContent('software|softwareDevContact');
  const softwareDevCountryCode = respXml.getChildContent('software|softwareDevCountryCode');
  const softwareDevTaxNumber = respXml.getChildContent('software|softwareDevTaxNumber');
  const encodedExchangeToken = respXml.getChildContent('encodedExchangeToken');
  const tokenValidityFrom = respXml.getChildContent('tokenValidityFrom');
  const tokenValidityTo = respXml.getChildContent('tokenValidityTo');
}