(C++) Sign SOAP XML for New Zealand Customs Service

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Demonstrates how to create an XAdES signed SOAP XML pertaining to the New Zealand Customs Service.

Note: This example requires Chilkat v9.5.0.96 or later.

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#include <CkStringBuilder.h>
#include <CkDateTime.h>
#include <CkXml.h>
#include <CkXmlDSigGen.h>
#include <CkCert.h>

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

    bool success = true;

    // Create the following XML to be signed:

    // <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
    //     xmlns:v1="http://customs.govt.nz/jbms/msggate/reqresp/v1">
    //     <soapenv:Header>
    //         <wsse:Security soapenv:mustUnderstand="1"
    //             xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd"
    //             xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
    //             <wsu:Timestamp wsu:Id="TS-037E78514E9B9132CB16817563559151">
    //                 <wsu:Created>2023-04-17T18:32:35.913Z</wsu:Created>
    //                 <wsu:Expires>2023-04-17T19:32:35.913Z</wsu:Expires>
    //             </wsu:Timestamp>
    //         </wsse:Security>
    //     </soapenv:Header>
    //     <soapenv:Body wsu:Id="id-8"
    //         xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
    //         <v1:RequestResponse>
    //             <v1:Submitter>TEST1234</v1:Submitter>
    //             <v1:MailboxMsgId>999999</v1:MailboxMsgId>
    //         </v1:RequestResponse>
    //     </soapenv:Body>
    // </soapenv:Envelope>

    // Create a random ID like this: TS-037E78514E9B9132CB16817563559151
    CkStringBuilder tsId;
    tsId.Append("TS-");
    tsId.AppendRandom(16,"hex");

    // STR-037E78514E9B9132CB16817563559614
    CkStringBuilder strId;
    strId.Append("STR-");
    strId.AppendRandom(16,"hex");

    // KI-037E78514E9B9132CB16817563559583
    CkStringBuilder keyInfoId;
    keyInfoId.Append("KI-");
    keyInfoId.AppendRandom(16,"hex");

    // Create a date/time for the current time with this format:  2023-04-17T18:32:35.913Z
    CkDateTime dt;
    dt.SetFromCurrentSystemTime();

    CkStringBuilder sbNow;
    sbNow.Append(dt.getAsTimestamp(false));
    // If we really need the milliseconds, we can replace the "Z" with ".000Z"
    // The server will also likely accept a timestamp without milliseconds, such as 2023-04-17T18:32:35Z
    int n = sbNow.Replace("Z",".000Z");

    CkStringBuilder sbNowPlusOneHour;
    dt.AddSeconds(3600);
    sbNowPlusOneHour.Append(dt.getAsTimestamp(false));
    n = sbNowPlusOneHour.Replace("Z",".000Z");

    CkXml xmlToSign;
    xmlToSign.put_Tag("soapenv:Envelope");
    xmlToSign.AddAttribute("xmlns:soapenv","http://schemas.xmlsoap.org/soap/envelope/");
    xmlToSign.AddAttribute("xmlns:v1","http://customs.govt.nz/jbms/msggate/reqresp/v1");
    xmlToSign.UpdateAttrAt("soapenv:Header|wsse:Security",true,"soapenv:mustUnderstand","1");
    xmlToSign.UpdateAttrAt("soapenv:Header|wsse:Security",true,"xmlns:wsse","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd");
    xmlToSign.UpdateAttrAt("soapenv:Header|wsse:Security",true,"xmlns:wsu","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
    xmlToSign.UpdateAttrAt("soapenv:Header|wsse:Security|wsu:Timestamp",true,"wsu:Id",tsId.getAsString());
    xmlToSign.UpdateChildContent("soapenv:Header|wsse:Security|wsu:Timestamp|wsu:Created",sbNow.getAsString());
    xmlToSign.UpdateChildContent("soapenv:Header|wsse:Security|wsu:Timestamp|wsu:Expires",sbNowPlusOneHour.getAsString());
    xmlToSign.UpdateAttrAt("soapenv:Body",true,"wsu:Id","id-8");
    xmlToSign.UpdateAttrAt("soapenv:Body",true,"xmlns:wsu","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
    xmlToSign.UpdateChildContent("soapenv:Body|v1:RequestResponse|v1:Submitter","TEST1234");
    xmlToSign.UpdateChildContent("soapenv:Body|v1:RequestResponse|v1:MailboxMsgId","999999");

    CkXmlDSigGen gen;

    gen.put_SigLocation("soapenv:Envelope|soapenv:Header|wsse:Security");
    gen.put_SigLocationMod(0);
    gen.put_SigId("SIG-037E78514E9B9132CB16817563559695");
    gen.put_SigNamespacePrefix("ds");
    gen.put_SigNamespaceUri("http://www.w3.org/2000/09/xmldsig#");
    gen.put_SignedInfoPrefixList("soapenv v1");
    gen.put_IncNamespacePrefix("ec");
    gen.put_IncNamespaceUri("http://www.w3.org/2001/10/xml-exc-c14n#");
    gen.put_SignedInfoCanonAlg("EXCL_C14N");
    gen.put_SignedInfoDigestMethod("sha256");

    // Set the KeyInfoId before adding references..
    gen.put_KeyInfoId(keyInfoId.getAsString());

    // -------- Reference 1 --------
    CkXml xml1;
    xml1.put_Tag("ds:Transforms");
    xml1.UpdateAttrAt("ds:Transform",true,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#");
    xml1.UpdateAttrAt("ds:Transform|ec:InclusiveNamespaces",true,"PrefixList","wsse soapenv v1");
    xml1.UpdateAttrAt("ds:Transform|ec:InclusiveNamespaces",true,"xmlns:ec","http://www.w3.org/2001/10/xml-exc-c14n#");

    gen.AddSameDocRef2(tsId.getAsString(),"sha256",xml1,"");

    // -------- Reference 2 --------
    CkXml xml2;
    xml2.put_Tag("ds:Transforms");
    xml2.UpdateAttrAt("ds:Transform",true,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#");
    xml2.UpdateAttrAt("ds:Transform|ec:InclusiveNamespaces",true,"PrefixList","v1");
    xml2.UpdateAttrAt("ds:Transform|ec:InclusiveNamespaces",true,"xmlns:ec","http://www.w3.org/2001/10/xml-exc-c14n#");

    gen.AddSameDocRef2("id-8","sha256",xml2,"");

    // Provide a certificate + private key. (PFX password is test123)
    CkCert cert;
    success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
    if (success != true) {
        std::cout << cert.lastErrorText() << "\r\n";
        return;
    }

    gen.SetX509Cert(cert,true);

    gen.put_KeyInfoType("Custom");

    // Create the custom KeyInfo XML..
    CkXml xmlCustomKeyInfo;
    xmlCustomKeyInfo.put_Tag("wsse:SecurityTokenReference");
    xmlCustomKeyInfo.AddAttribute("wsu:Id",strId.getAsString());
    xmlCustomKeyInfo.UpdateAttrAt("wsse:KeyIdentifier",true,"EncodingType","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary");
    xmlCustomKeyInfo.UpdateAttrAt("wsse:KeyIdentifier",true,"ValueType","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3");
    // Insert the single-line base64 of the signing certificate's DER
    cert.put_UncommonOptions("Base64CertNoCRLF");
    xmlCustomKeyInfo.UpdateChildContent("wsse:KeyIdentifier",cert.getEncoded());

    xmlCustomKeyInfo.put_EmitXmlDecl(false);
    gen.put_CustomKeyInfoXml(xmlCustomKeyInfo.getXml());

    // Load XML to be signed...
    CkStringBuilder sbXml;
    xmlToSign.GetXmlSb(sbXml);

    gen.put_Behaviors("IndentedSignature");

    // Sign the XML...
    gen.put_VerboseLogging(true);
    success = gen.CreateXmlDSigSb(sbXml);
    if (success != true) {
        std::cout << gen.lastErrorText() << "\r\n";
        return;
    }

    // Save the signed XML to a file.
    success = sbXml.WriteFile("c:/temp/qa_output/signedXml.xml","utf-8",false);

    std::cout << sbXml.getAsString() << "\r\n";
    }