(MFC) Subject Alternative Name

Demonstrates the usage of the SubjectAlternativeName property to get the certificate SAN (subject alternative name) as XML.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkCert.h>
#include <CkXml.h>

void ChilkatSample(void)
    {
    CkString strOut;

    // Note: Not all certificates contain a Subject Alternative Name.
    // If it does not, the SubjectAlternativeName property will contain the empty string.

    CkCert cert;

    bool success = cert.LoadFromFile("qa_data/certs/testIcpBrasil.cer");
    if (success == false) {
        strOut.append(cert.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    const char *subjectAltNameXml = cert.subjectAlternativeName();

    strOut.append(subjectAltNameXml);
    strOut.append("\r\n");

    // Here's a sample of the subjectAltNameXml:

    // <?xml version="1.0" encoding="utf-8"?>
    // <SubjectAltName>
    //     <name type="oid" oid="2.16.76.1.3.4">...</name>
    //     <name type="oid" oid="2.16.76.1.3.2">...</name>
    //     <name type="oid" oid="2.16.76.1.3.3">...</name>
    //     <name type="oid" oid="2.16.76.1.3.7">...</name>
    //     <rfc822Name>...</rfc822Name>
    // </SubjectAltName>

    // The XML can be parsed like this:

    CkXml xml;

    xml.LoadXml(subjectAltNameXml);

    const char *oid = 0;
    const char *name = 0;

    int i = 0;
    int count_i = xml.NumChildrenHavingTag("name");
    while (i < count_i) {
        xml.put_I(i);
        oid = xml.chilkatPath("name[i]|(oid)");
        name = xml.getChildContent("name[i]");
        i = i + 1;
    }

    const char *rfc822Name = xml.getChildContent("rfc822Name");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }