(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 <C_CkCrypt2.h>
#include <C_CkDateTime.h>
#include <C_CkPrng.h>
#include <C_CkStringBuilder.h>
#include <C_CkXml.h>
#include <C_CkHttp.h>
#include <C_CkHttpResponse.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkCrypt2 crypt;
    HCkDateTime dtNow;
    const char *myPassword;
    const char *passwordHash;
    HCkPrng prng;
    HCkStringBuilder sbRequestId;
    const char *signatureKey;
    HCkStringBuilder sbFinalHashBase;
    int numReplaced;
    const char *requestSignature;
    HCkXml xml;
    HCkHttp http;
    const char *endpoint;
    HCkHttpResponse resp;
    HCkXml respXml;
    const char *QueryTaxpayerResponse_xmlns;
    const char *QueryTaxpayerResponse_xmlns_ns2;
    const char *requestId;
    const char *timestamp;
    const char *requestVersion;
    const char *headerVersion;
    const char *funcCode;
    const char *softwareId;
    const char *softwareName;
    const char *softwareOperation;
    const char *softwareMainVersion;
    const char *softwareDevName;
    const char *softwareDevContact;
    const char *softwareDevCountryCode;
    const char *softwareDevTaxNumber;
    const char *infoDate;
    const char *taxpayerValidity;
    const char *taxpayerName;
    int ns2_taxpayerId;
    int ns2_vatCode;
    const char *taxpayerAddressType;
    const char *ns2_countryCode;
    int ns2_postalCode;
    const char *ns2_city;
    const char *ns2_streetName;
    const char *ns2_publicPlaceCategory;
    int ns2_number;

    // 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>

    crypt = CkCrypt2_Create();

    dtNow = CkDateTime_Create();
    CkDateTime_SetFromCurrentSystemTime(dtNow);
    printf("%s\n",CkDateTime_getAsTimestamp(dtNow,FALSE));

    // The hash algorithm for the password is SHA512 (not SHA3-512).
    CkCrypt2_putHashAlgorithm(crypt,"sha512");
    CkCrypt2_putEncodingMode(crypt,"hex");
    myPassword = "my-password";
    passwordHash = CkCrypt2_hashStringENC(crypt,myPassword);

    // Generate a random request ID like "RID215118906689"
    prng = CkPrng_Create();
    sbRequestId = CkStringBuilder_Create();
    CkStringBuilder_Append(sbRequestId,"RID");
    CkStringBuilder_Append(sbRequestId,CkPrng_randomString(prng,12,TRUE,FALSE,FALSE));
    printf("generated requestId = %s\n",CkStringBuilder_getAsString(sbRequestId));

    // 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.
    CkCrypt2_putHashAlgorithm(crypt,"sha3-512");
    signatureKey = "ce-8f5e-215119fa7dd621DLMRHRLH2S";

    sbFinalHashBase = CkStringBuilder_Create();

    // First append the timestamp because we are going to remove certain chars/parts.
    CkStringBuilder_Append(sbFinalHashBase,CkDateTime_getAsTimestamp(dtNow,FALSE));
    numReplaced = CkStringBuilder_Replace(sbFinalHashBase,"Z","");
    numReplaced = CkStringBuilder_Replace(sbFinalHashBase,"-","");
    numReplaced = CkStringBuilder_Replace(sbFinalHashBase,":","");
    numReplaced = CkStringBuilder_Replace(sbFinalHashBase,"T","");

    // Prepend the requestId and append the signatureKey
    CkStringBuilder_Prepend(sbFinalHashBase,CkStringBuilder_getAsString(sbRequestId));
    CkStringBuilder_Append(sbFinalHashBase,signatureKey);

    requestSignature = CkCrypt2_hashStringENC(crypt,CkStringBuilder_getAsString(sbFinalHashBase));

    xml = CkXml_Create();
    CkXml_putTag(xml,"QueryTaxpayerRequest");
    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,FALSE));
    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");
    CkXml_UpdateChildContent(xml,"taxNumber","22222222");

    // POST the XML to https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/queryTaxpayer
    http = CkHttp_Create();
    CkHttp_putAccept(http,"application/xml");
    CkHttp_SetRequestHeader(http,"Content-Type","application/xml");
    endpoint = "https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/queryTaxpayer";
    resp = CkHttp_PostXml(http,endpoint,CkXml_getXml(xml),"utf-8");
    if (CkHttp_getLastMethodSuccess(http) == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkCrypt2_Dispose(crypt);
        CkDateTime_Dispose(dtNow);
        CkPrng_Dispose(prng);
        CkStringBuilder_Dispose(sbRequestId);
        CkStringBuilder_Dispose(sbFinalHashBase);
        CkXml_Dispose(xml);
        CkHttp_Dispose(http);
        return;
    }

    printf("Response status code = %d\n",CkHttpResponse_getStatusCode(resp));

    respXml = CkXml_Create();
    CkXml_LoadXml(respXml,CkHttpResponse_bodyStr(resp));
    printf("Response body:\n");
    printf("%s\n",CkXml_getXml(respXml));

    CkHttpResponse_Dispose(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.

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


    CkCrypt2_Dispose(crypt);
    CkDateTime_Dispose(dtNow);
    CkPrng_Dispose(prng);
    CkStringBuilder_Dispose(sbRequestId);
    CkStringBuilder_Dispose(sbFinalHashBase);
    CkXml_Dispose(xml);
    CkHttp_Dispose(http);
    CkXml_Dispose(respXml);

    }