(Tcl) 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

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load ./chilkat.dll

# 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>

set crypt [new_CkCrypt2]

set dtNow [new_CkDateTime]

CkDateTime_SetFromCurrentSystemTime $dtNow
puts [CkDateTime_getAsTimestamp $dtNow 0]

# The hash algorithm for the password is SHA512 (not SHA3-512).
CkCrypt2_put_HashAlgorithm $crypt "sha512"
CkCrypt2_put_EncodingMode $crypt "hex"
set myPassword "my-password"
set passwordHash [CkCrypt2_hashStringENC $crypt $myPassword]

# Generate a random request ID like "RID215118906689"
set prng [new_CkPrng]

set sbRequestId [new_CkStringBuilder]

CkStringBuilder_Append $sbRequestId "RID"
CkStringBuilder_Append $sbRequestId [CkPrng_randomString $prng 12 1 0 0]
puts "generated requestId = [CkStringBuilder_getAsString $sbRequestId]"

# IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
# IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
# IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
# IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
# IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
# Calculate the requestSignature
CkCrypt2_put_HashAlgorithm $crypt "sha3-512"
set signatureKey "ce-8f5e-215119fa7dd621DLMRHRLH2S"

set sbFinalHashBase [new_CkStringBuilder]

# First append the timestamp because we are going to remove certain chars/parts.
CkStringBuilder_Append $sbFinalHashBase [CkDateTime_getAsTimestamp $dtNow 0]
set numReplaced [CkStringBuilder_Replace $sbFinalHashBase "Z" ""]
set numReplaced [CkStringBuilder_Replace $sbFinalHashBase "-" ""]
set numReplaced [CkStringBuilder_Replace $sbFinalHashBase ":" ""]
set numReplaced [CkStringBuilder_Replace $sbFinalHashBase "T" ""]

# Prepend the requestId and append the signatureKey
CkStringBuilder_Prepend $sbFinalHashBase [CkStringBuilder_getAsString $sbRequestId]
CkStringBuilder_Append $sbFinalHashBase $signatureKey

set requestSignature [CkCrypt2_hashStringENC $crypt [CkStringBuilder_getAsString $sbFinalHashBase]]

set xml [new_CkXml]

CkXml_put_Tag $xml "TokenExchangeRequest"
CkXml_AddAttribute $xml "xmlns" "http://schemas.nav.gov.hu/OSA/2.0/api"
CkXml_UpdateChildContent $xml "header|requestId" [CkStringBuilder_getAsString $sbRequestId]
CkXml_UpdateChildContent $xml "header|timestamp" [CkDateTime_getAsTimestamp $dtNow 0]
CkXml_UpdateChildContent $xml "header|requestVersion" "2.0"
CkXml_UpdateChildContent $xml "header|headerVersion" "1.0"
CkXml_UpdateChildContent $xml "user|login" "lwilsmn0uqdxe6u"
CkXml_UpdateChildContent $xml "user|passwordHash" $passwordHash
CkXml_UpdateChildContent $xml "user|taxNumber" "11111111"
CkXml_UpdateChildContent $xml "user|requestSignature" $requestSignature
CkXml_UpdateChildContent $xml "software|softwareId" "123456789123456789"
CkXml_UpdateChildContent $xml "software|softwareName" "string"
CkXml_UpdateChildContent $xml "software|softwareOperation" "LOCAL_SOFTWARE"
CkXml_UpdateChildContent $xml "software|softwareMainVersion" "string"
CkXml_UpdateChildContent $xml "software|softwareDevName" "string"
CkXml_UpdateChildContent $xml "software|softwareDevContact" "string"
CkXml_UpdateChildContent $xml "software|softwareDevCountryCode" "HU"
CkXml_UpdateChildContent $xml "software|softwareDevTaxNumber" "string"

# POST the XML to https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/tokenExchange
set http [new_CkHttp]

CkHttp_put_Accept $http "application/xml"
CkHttp_SetRequestHeader $http "Content-Type" "application/xml"
set endpoint "https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/tokenExchange"
# resp is a CkHttpResponse
set resp [CkHttp_PostXml $http $endpoint [CkXml_getXml $xml] "utf-8"]
if {[CkHttp_get_LastMethodSuccess $http] == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkCrypt2 $crypt
    delete_CkDateTime $dtNow
    delete_CkPrng $prng
    delete_CkStringBuilder $sbRequestId
    delete_CkStringBuilder $sbFinalHashBase
    delete_CkXml $xml
    delete_CkHttp $http
    exit
}

puts "Response status code = [CkHttpResponse_get_StatusCode $resp]"

set respXml [new_CkXml]

CkXml_LoadXml $respXml [CkHttpResponse_bodyStr $resp]
puts "Response body:"
puts [CkXml_getXml $respXml]

# Save our exchange token to a file to be used for subsequent requests.
CkXml_SaveXml $respXml "qa_data/tokens/nav_exchange_token.xml"

delete_CkHttpResponse $resp

# 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

set TokenExchangeResponse_xmlns [CkXml_getAttrValue $respXml "xmlns"]
set TokenExchangeResponse_xmlns_ns2 [CkXml_getAttrValue $respXml "xmlns:ns2"]
set requestId [CkXml_getChildContent $respXml "header|requestId"]
set timestamp [CkXml_getChildContent $respXml "header|timestamp"]
set requestVersion [CkXml_getChildContent $respXml "header|requestVersion"]
set headerVersion [CkXml_getChildContent $respXml "header|headerVersion"]
set funcCode [CkXml_getChildContent $respXml "result|funcCode"]
set softwareId [CkXml_getChildContent $respXml "software|softwareId"]
set softwareName [CkXml_getChildContent $respXml "software|softwareName"]
set softwareOperation [CkXml_getChildContent $respXml "software|softwareOperation"]
set softwareMainVersion [CkXml_getChildContent $respXml "software|softwareMainVersion"]
set softwareDevName [CkXml_getChildContent $respXml "software|softwareDevName"]
set softwareDevContact [CkXml_getChildContent $respXml "software|softwareDevContact"]
set softwareDevCountryCode [CkXml_getChildContent $respXml "software|softwareDevCountryCode"]
set softwareDevTaxNumber [CkXml_getChildContent $respXml "software|softwareDevTaxNumber"]
set encodedExchangeToken [CkXml_getChildContent $respXml "encodedExchangeToken"]
set tokenValidityFrom [CkXml_getChildContent $respXml "tokenValidityFrom"]
set tokenValidityTo [CkXml_getChildContent $respXml "tokenValidityTo"]

delete_CkCrypt2 $crypt
delete_CkDateTime $dtNow
delete_CkPrng $prng
delete_CkStringBuilder $sbRequestId
delete_CkStringBuilder $sbFinalHashBase
delete_CkXml $xml
delete_CkHttp $http
delete_CkXml $respXml