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(Visual FoxPro) Hungary NAV Token Exchange

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

Note: This example requires Chilkat v9.5.0.83 or greater.

For more information, see https://onlineszamla.nav.gov.hu/api/files/container/download/Online%20Szamla_Interfesz%20specifik%C3%A1ci%C3%B3_EN_v2.0.pdf

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

LOCAL lnSuccess
LOCAL loCrypt
LOCAL loDtNow
LOCAL lcMyPassword
LOCAL lcPasswordHash
LOCAL loPrng
LOCAL loSbRequestId
LOCAL lcSignatureKey
LOCAL loSbFinalHashBase
LOCAL lnNumReplaced
LOCAL lcRequestSignature
LOCAL loXml
LOCAL loHttp
LOCAL lcEndpoint
LOCAL loResp
LOCAL loRespXml
LOCAL lcTokenExchangeResponse_xmlns
LOCAL lcTokenExchangeResponse_xmlns_ns2
LOCAL lcRequestId
LOCAL lcTimestamp
LOCAL lcRequestVersion
LOCAL lcHeaderVersion
LOCAL lcFuncCode
LOCAL lcSoftwareId
LOCAL lcSoftwareName
LOCAL lcSoftwareOperation
LOCAL lcSoftwareMainVersion
LOCAL lcSoftwareDevName
LOCAL lcSoftwareDevContact
LOCAL lcSoftwareDevCountryCode
LOCAL lcSoftwareDevTaxNumber
LOCAL lcEncodedExchangeToken
LOCAL lcTokenValidityFrom
LOCAL lcTokenValidityTo

* 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>

loCrypt = CreateObject('Chilkat_9_5_0.Crypt2')

loDtNow = CreateObject('Chilkat_9_5_0.CkDateTime')
loDtNow.SetFromCurrentSystemTime()
? loDtNow.GetAsTimestamp(0)

* The hash algorithm for the password is SHA512 (not SHA3-512).
loCrypt.HashAlgorithm = "sha512"
loCrypt.EncodingMode = "hex"
lcMyPassword = "my-password"
lcPasswordHash = loCrypt.HashStringENC(lcMyPassword)

* Generate a random request ID like "RID215118906689"
loPrng = CreateObject('Chilkat_9_5_0.Prng')
loSbRequestId = CreateObject('Chilkat_9_5_0.StringBuilder')
loSbRequestId.Append("RID")
loSbRequestId.Append(loPrng.RandomString(12,1,0,0))
? "generated requestId = " + loSbRequestId.GetAsString()

* Calculate the requestSignature
loCrypt.HashAlgorithm = "sha3-512"
lcSignatureKey = "ce-8f5e-215119fa7dd621DLMRHRLH2S"

loSbFinalHashBase = CreateObject('Chilkat_9_5_0.StringBuilder')

* First append the timestamp because we are going to remove certain chars/parts.
loSbFinalHashBase.Append(loDtNow.GetAsTimestamp(0))
lnNumReplaced = loSbFinalHashBase.Replace("Z","")
lnNumReplaced = loSbFinalHashBase.Replace("-","")
lnNumReplaced = loSbFinalHashBase.Replace(":","")
lnNumReplaced = loSbFinalHashBase.Replace("T","")

* Prepend the requestId and append the signatureKey
loSbFinalHashBase.Prepend(loSbRequestId.GetAsString())
loSbFinalHashBase.Append(lcSignatureKey)

lcRequestSignature = loCrypt.HashStringENC(loSbFinalHashBase.GetAsString())

loXml = CreateObject('Chilkat_9_5_0.Xml')
loXml.Tag = "TokenExchangeRequest"
loXml.AddAttribute("xmlns","http://schemas.nav.gov.hu/OSA/2.0/api")
loXml.UpdateChildContent("header|requestId",loSbRequestId.GetAsString())
loXml.UpdateChildContent("header|timestamp",loDtNow.GetAsTimestamp(0))
loXml.UpdateChildContent("header|requestVersion","2.0")
loXml.UpdateChildContent("header|headerVersion","1.0")
loXml.UpdateChildContent("user|login","lwilsmn0uqdxe6u")
loXml.UpdateChildContent("user|passwordHash",lcPasswordHash)
loXml.UpdateChildContent("user|taxNumber","11111111")
loXml.UpdateChildContent("user|requestSignature",lcRequestSignature)
loXml.UpdateChildContent("software|softwareId","123456789123456789")
loXml.UpdateChildContent("software|softwareName","string")
loXml.UpdateChildContent("software|softwareOperation","LOCAL_SOFTWARE")
loXml.UpdateChildContent("software|softwareMainVersion","string")
loXml.UpdateChildContent("software|softwareDevName","string")
loXml.UpdateChildContent("software|softwareDevContact","string")
loXml.UpdateChildContent("software|softwareDevCountryCode","HU")
loXml.UpdateChildContent("software|softwareDevTaxNumber","string")

* POST the XML to https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/tokenExchange
loHttp = CreateObject('Chilkat_9_5_0.Http')
loHttp.Accept = "application/xml"
loHttp.SetRequestHeader("Content-Type","application/xml")
lcEndpoint = "https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/tokenExchange"
loResp = loHttp.PostXml(lcEndpoint,loXml.GetXml(),"utf-8")
IF (loHttp.LastMethodSuccess = 0) THEN
    ? loHttp.LastErrorText
    RELEASE loCrypt
    RELEASE loDtNow
    RELEASE loPrng
    RELEASE loSbRequestId
    RELEASE loSbFinalHashBase
    RELEASE loXml
    RELEASE loHttp
    CANCEL
ENDIF

? "Response status code = " + STR(loResp.StatusCode)

loRespXml = CreateObject('Chilkat_9_5_0.Xml')
loRespXml.LoadXml(loResp.BodyStr)
? "Response body:"
? loRespXml.GetXml()

* Save our exchange token to a file to be used for subsequent requests.
loRespXml.SaveXml("qa_data/tokens/nav_exchange_token.xml")

RELEASE loResp

* 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

lcTokenExchangeResponse_xmlns = loRespXml.GetAttrValue("xmlns")
lcTokenExchangeResponse_xmlns_ns2 = loRespXml.GetAttrValue("xmlns:ns2")
lcRequestId = loRespXml.GetChildContent("header|requestId")
lcTimestamp = loRespXml.GetChildContent("header|timestamp")
lcRequestVersion = loRespXml.GetChildContent("header|requestVersion")
lcHeaderVersion = loRespXml.GetChildContent("header|headerVersion")
lcFuncCode = loRespXml.GetChildContent("result|funcCode")
lcSoftwareId = loRespXml.GetChildContent("software|softwareId")
lcSoftwareName = loRespXml.GetChildContent("software|softwareName")
lcSoftwareOperation = loRespXml.GetChildContent("software|softwareOperation")
lcSoftwareMainVersion = loRespXml.GetChildContent("software|softwareMainVersion")
lcSoftwareDevName = loRespXml.GetChildContent("software|softwareDevName")
lcSoftwareDevContact = loRespXml.GetChildContent("software|softwareDevContact")
lcSoftwareDevCountryCode = loRespXml.GetChildContent("software|softwareDevCountryCode")
lcSoftwareDevTaxNumber = loRespXml.GetChildContent("software|softwareDevTaxNumber")
lcEncodedExchangeToken = loRespXml.GetChildContent("encodedExchangeToken")
lcTokenValidityFrom = loRespXml.GetChildContent("tokenValidityFrom")
lcTokenValidityTo = loRespXml.GetChildContent("tokenValidityTo")

RELEASE loCrypt
RELEASE loDtNow
RELEASE loPrng
RELEASE loSbRequestId
RELEASE loSbFinalHashBase
RELEASE loXml
RELEASE loHttp
RELEASE loRespXml


 

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