(C++) Hungary NAV Query Taxpayer

Demonstrates the queryTaxpayer 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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#include <CkCrypt2.h>
#include <CkDateTime.h>
#include <CkPrng.h>
#include <CkStringBuilder.h>
#include <CkXml.h>
#include <CkHttp.h>
#include <CkHttpResponse.h>

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

    // Build the following XML:

    // <?xml version="1.0" encoding="UTF-8"?>
    // <QueryTaxpayerRequest xmlns="http://schemas.nav.gov.hu/OSA/2.0/api">
    // 	<header>
    // 		<requestId>RID215118906689</requestId>
    // 		<timestamp>2019-09-11T11:11:08.579Z</timestamp>
    // 		<requestVersion>2.0</requestVersion>
    // 		<headerVersion>1.0</headerVersion>
    // 	</header>
    // 	<user>
    // 		<login>lwilsmn0uqdxe6u</login>
    // 		<passwordHash>2F43840A882CFDB7DB0FEC07D419D030D864B47B6B541DC280EF81B937B7A176E33C052B0D26638CC18A7A2C08D8D311733078A774BF43F6CA57FE8CD74DC28E</passwordHash>
    // 		<taxNumber>11111111</taxNumber>
    // 		<requestSignature>C5ADE8A2231C509D2887E6C2C4406CC5F72CA25B070AD3E94FADFA3F91A8A3667AF882DEDC7D67E9086E3D34A95886E929ACD8C924CD1E8357C89BEF43BA9126</requestSignature>
    // 	</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>
    // 	<taxNumber>22222222</taxNumber>
    // </QueryTaxpayerRequest>

    bool success;
    CkCrypt2 crypt;

    CkDateTime dtNow;
    dtNow.SetFromCurrentSystemTime();
    std::cout << dtNow.getAsTimestamp(false) << "\r\n";

    // The hash algorithm for the password is SHA512 (not SHA3-512).
    crypt.put_HashAlgorithm("sha512");
    crypt.put_EncodingMode("hex");
    const char *myPassword = "my-password";
    const char *passwordHash = crypt.hashStringENC(myPassword);

    // Generate a random request ID like "RID215118906689"
    CkPrng prng;
    CkStringBuilder sbRequestId;
    sbRequestId.Append("RID");
    sbRequestId.Append(prng.randomString(12,true,false,false));
    std::cout << "generated requestId = " << sbRequestId.getAsString() << "\r\n";

    // Calculate the requestSignature
    // 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.
    crypt.put_HashAlgorithm("sha3-512");
    const char *signatureKey = "ce-8f5e-215119fa7dd621DLMRHRLH2S";

    CkStringBuilder sbFinalHashBase;

    // First append the timestamp because we are going to remove certain chars/parts.
    sbFinalHashBase.Append(dtNow.getAsTimestamp(false));
    int 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 char *requestSignature = crypt.hashStringENC(sbFinalHashBase.getAsString());

    CkXml xml;
    xml.put_Tag("QueryTaxpayerRequest");
    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");
    xml.UpdateChildContent("taxNumber","22222222");

    // POST the XML to https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/queryTaxpayer
    CkHttp http;
    http.put_Accept("application/xml");
    http.SetRequestHeader("Content-Type","application/xml");
    const char *endpoint = "https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/queryTaxpayer";
    CkHttpResponse *resp = http.PostXml(endpoint,xml.getXml(),"utf-8");
    if (http.get_LastMethodSuccess() == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "Response status code = " << resp->get_StatusCode() << "\r\n";

    CkXml respXml;
    respXml.LoadXml(resp->bodyStr());
    std::cout << "Response body:" << "\r\n";
    std::cout << respXml.getXml() << "\r\n";

    delete resp;

    // The result looks like this:

    // <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
    // <QueryTaxpayerResponse xmlns="http://schemas.nav.gov.hu/OSA/2.0/api" xmlns:ns2="http://schemas.nav.gov.hu/OSA/2.0/data">
    //     <header>
    //         <requestId>RID847153193061</requestId>
    //         <timestamp>2020-03-24T16:00:34Z</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>
    //     <infoDate>1993-01-01T00:00:00.000+01:00</infoDate>
    //     <taxpayerValidity>true</taxpayerValidity>
    //     <taxpayerData>
    //         <taxpayerName>some taxpayer name</taxpayerName>
    //         <taxNumberDetail>
    //             <ns2:taxpayerId>22222222</ns2:taxpayerId>
    //             <ns2:vatCode>2</ns2:vatCode>
    //         </taxNumberDetail>
    //         <taxpayerAddressList>
    //             <taxpayerAddressItem>
    //                 <taxpayerAddressType>HQ</taxpayerAddressType>
    //                 <taxpayerAddress>
    //                     <ns2:countryCode>HU</ns2:countryCode>
    //                     <ns2:postalCode>1121</ns2:postalCode>
    //                     <ns2:city>BUDAPEST 12</ns2:city>
    //                     <ns2:streetName>ABCD</ns2:streetName>
    //                     <ns2:publicPlaceCategory>UTCA</ns2:publicPlaceCategory>
    //                     <ns2:number>20</ns2:number>
    //                 </taxpayerAddress>
    //             </taxpayerAddressItem>
    //         </taxpayerAddressList>
    //     </taxpayerData>
    // </QueryTaxpayerResponse>

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

    // Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
    // See this example explaining how this memory should be used: const char * functions.

    const char *QueryTaxpayerResponse_xmlns = respXml.getAttrValue("xmlns");
    const char *QueryTaxpayerResponse_xmlns_ns2 = respXml.getAttrValue("xmlns:ns2");
    const char *requestId = respXml.getChildContent("header|requestId");
    const char *timestamp = respXml.getChildContent("header|timestamp");
    const char *requestVersion = respXml.getChildContent("header|requestVersion");
    const char *headerVersion = respXml.getChildContent("header|headerVersion");
    const char *funcCode = respXml.getChildContent("result|funcCode");
    const char *softwareId = respXml.getChildContent("software|softwareId");
    const char *softwareName = respXml.getChildContent("software|softwareName");
    const char *softwareOperation = respXml.getChildContent("software|softwareOperation");
    const char *softwareMainVersion = respXml.getChildContent("software|softwareMainVersion");
    const char *softwareDevName = respXml.getChildContent("software|softwareDevName");
    const char *softwareDevContact = respXml.getChildContent("software|softwareDevContact");
    const char *softwareDevCountryCode = respXml.getChildContent("software|softwareDevCountryCode");
    const char *softwareDevTaxNumber = respXml.getChildContent("software|softwareDevTaxNumber");
    const char *infoDate = respXml.getChildContent("infoDate");
    const char *taxpayerValidity = respXml.getChildContent("taxpayerValidity");
    const char *taxpayerName = respXml.getChildContent("taxpayerData|taxpayerName");
    int ns2_taxpayerId = respXml.GetChildIntValue("taxpayerData|taxNumberDetail|ns2:taxpayerId");
    int ns2_vatCode = respXml.GetChildIntValue("taxpayerData|taxNumberDetail|ns2:vatCode");
    const char *taxpayerAddressType = respXml.getChildContent("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddressType");
    const char *ns2_countryCode = respXml.getChildContent("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddress|ns2:countryCode");
    int ns2_postalCode = respXml.GetChildIntValue("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddress|ns2:postalCode");
    const char *ns2_city = respXml.getChildContent("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddress|ns2:city");
    const char *ns2_streetName = respXml.getChildContent("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddress|ns2:streetName");
    const char *ns2_publicPlaceCategory = respXml.getChildContent("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddress|ns2:publicPlaceCategory");
    int ns2_number = respXml.GetChildIntValue("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddress|ns2:number");
    }