(C++) Hungary NAV Manage Invoice Request

Demonstrates the manageInvoice 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 <CkBinData.h>
#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:

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

    // <?xml version="1.0" encoding="UTF-8"?>
    // <ManageInvoiceRequest xmlns="http://schemas.nav.gov.hu/OSA/2.0/api">
    // 	<header>
    // 		<requestId>RID181837288942</requestId>
    // 		<timestamp>2019-09-11T12:44:55.442Z</timestamp>
    // 		<requestVersion>2.0</requestVersion>
    // 		<headerVersion>1.0</headerVersion>
    // 	</header>
    // 	<user>
    // 		<login>lwilsmn0uqdxe6u</login>
    // 		<passwordHash>2F43840A882CFDB7DB0FEC07D419D030D864B47B6B541DC280EF81B937B7A176E33C052B0D26638CC18A7A2C08D8D311733078A774BF43F6CA57FE8CD74DC28E</passwordHash>
    // 		<taxNumber>11111111</taxNumber>
    // 		<requestSignature>E4D191A48EE8828A1E84C1F841A2B4E1699ECB49C4CDA1DC7A057765FD935872219644CC2B5A93B8A344404E4FD8ECA4902B5DBCF993E768DC558B0F0281E775</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>
    // 	<exchangeToken>b1aca173-d9e8-4561-9237-0511eed99eaa2P0ZHLXBRI2U</exchangeToken>
    // 	<invoiceOperations>
    // 		<compressedContent>false</compressedContent>
    // 		<invoiceOperation>
    // 			<index>1</index>
    // 			<invoiceOperation>CREATE</invoiceOperation>
    // 			<invoiceData>base64 contents of invoiceData1 XML file</invoiceData>
    // 		</invoiceOperation>
    // 		<invoiceOperation>
    // 			<index>2</index>
    // 			<invoiceOperation>CREATE</invoiceOperation>
    // 			<invoiceData>base64 contents of invoiceData2 XML file</invoiceData>
    // 		</invoiceOperation>
    // 		<invoiceOperation>
    // 			<index>3</index>
    // 			<invoiceOperation>CREATE</invoiceOperation>
    // 			<invoiceData>base64 contents of invoiceData3 XML file</invoiceData>
    // 		</invoiceOperation>
    // 	</invoiceOperations>
    // </ManageInvoiceRequest>
    // 

    bool success;

    // First load the invoiceData for the 3 XML invoice files we'll be sending.
    CkBinData bdInvoiceData1;
    CkBinData bdInvoiceData2;
    CkBinData bdInvoiceData3;
    success = bdInvoiceData1.LoadFile("qa_data/nav_invoicing/invoiceData1.xml");
    success = bdInvoiceData2.LoadFile("qa_data/nav_invoicing/invoiceData2.xml");
    success = bdInvoiceData3.LoadFile("qa_data/nav_invoicing/invoiceData3.xml");
    if (success == false) {
        std::cout << "Failed to load invoice data." << "\r\n";
        return;
    }

    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
    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);

    // Calculate each index hash and add it to the sbFinalHashBase
    CkStringBuilder sbHashBase;
    sbHashBase.Append("CREATE");
    sbHashBase.Append(bdInvoiceData1.getEncoded("base64"));
    const char *indexHash = crypt.hashStringENC(sbHashBase.getAsString());
    sbFinalHashBase.Append(indexHash);

    sbHashBase.Clear();
    sbHashBase.Append("CREATE");
    sbHashBase.Append(bdInvoiceData2.getEncoded("base64"));
    indexHash = crypt.hashStringENC(sbHashBase.getAsString());
    sbFinalHashBase.Append(indexHash);

    sbHashBase.Clear();
    sbHashBase.Append("CREATE");
    sbHashBase.Append(bdInvoiceData3.getEncoded("base64"));
    indexHash = crypt.hashStringENC(sbHashBase.getAsString());
    sbFinalHashBase.Append(indexHash);

    // Get our request signature (using sha3-512 because our HashAlgorithm was set to "sha3-512" up above...)
    const char *requestSignature = crypt.hashStringENC(sbFinalHashBase.getAsString());

    // Load our recently obtained exchange token.
    // See Hungary NAV Invoicing Token Exchange Sample Code
    CkXml xmlExchangeToken;
    success = xmlExchangeToken.LoadXmlFile("qa_data/tokens/nav_exchange_token.xml");
    if (success == false) {
        std::cout << xmlExchangeToken.lastErrorText() << "\r\n";
        return;
    }

    // Get the base64 encoded/encrypted exchange token.
    // IMPORTANT:  Make sure to use the exchange token before it expires.
    // If it expired, then get a new one..
    const char *encodedEncryptedExchangeToken = xmlExchangeToken.getChildContent("encodedExchangeToken");

    // Decode to binary.
    CkBinData bdExchangeToken;
    bdExchangeToken.AppendEncoded(encodedEncryptedExchangeToken,"base64");

    // Decrypt using your 16-digit replacement key:
    crypt.put_CryptAlgorithm("aes");
    crypt.put_CipherMode("ecb");
    crypt.put_KeyLength(128);
    crypt.put_EncodingMode("base64");
    // Pass your 16-digit replacement key here:
    crypt.SetEncodedKey("99952BBAAAAA8XYZ","ascii");
    crypt.DecryptBd(bdExchangeToken);
    const char *exchangeToken = bdExchangeToken.getString("utf-8");
    std::cout << "exchange token = " << exchangeToken << "\r\n";

    // Now build the XML..
    CkXml xml;
    xml.put_Tag("ManageInvoiceRequest");
    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("exchangeToken",exchangeToken);
    xml.UpdateChildContent("invoiceOperations|compressedContent","false");
    xml.UpdateChildContent("invoiceOperations|invoiceOperation|index","1");
    xml.UpdateChildContent("invoiceOperations|invoiceOperation|invoiceOperation","CREATE");
    xml.UpdateChildContent("invoiceOperations|invoiceOperation|invoiceData",bdInvoiceData1.getEncoded("base64"));
    xml.UpdateChildContent("invoiceOperations|invoiceOperation[1]|index","2");
    xml.UpdateChildContent("invoiceOperations|invoiceOperation[1]|invoiceOperation","CREATE");
    xml.UpdateChildContent("invoiceOperations|invoiceOperation[1]|invoiceData",bdInvoiceData2.getEncoded("base64"));
    xml.UpdateChildContent("invoiceOperations|invoiceOperation[2]|index","3");
    xml.UpdateChildContent("invoiceOperations|invoiceOperation[2]|invoiceOperation","CREATE");
    xml.UpdateChildContent("invoiceOperations|invoiceOperation[2]|invoiceData",bdInvoiceData3.getEncoded("base64"));

    // POST the XML to https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/manageInvoice
    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/manageInvoice";
    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"?>
    // <ManageInvoiceResponse xmlns="http://schemas.nav.gov.hu/OSA/2.0/api" xmlns:ns2="http://schemas.nav.gov.hu/OSA/2.0/data">
    //     <header>
    //         <requestId>RID871830318143</requestId>
    //         <timestamp>2020-03-25T15:51:25Z</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>
    //     <transactionId>2WT9GFSKFUU1V4XP</transactionId>
    // </ManageInvoiceResponse>

    // 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 *ManageInvoiceResponse_xmlns = respXml.getAttrValue("xmlns");
    const char *ManageInvoiceResponse_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 *transactionId = respXml.getChildContent("transactionId");
    }