(C) Subject Alternative Name

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

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#include <C_CkCert.h>
#include <C_CkXml.h>

void ChilkatSample(void)
    {
    HCkCert cert;
    BOOL success;
    const char *subjectAltNameXml;
    HCkXml xml;
    const char *oid;
    const char *name;
    int i;
    int count_i;
    const char *rfc822Name;

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

    cert = CkCert_Create();

    success = CkCert_LoadFromFile(cert,"qa_data/certs/testIcpBrasil.cer");
    if (success == FALSE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkCert_Dispose(cert);
        return;
    }

    subjectAltNameXml = CkCert_subjectAlternativeName(cert);

    printf("%s\n",subjectAltNameXml);

    // 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:

    xml = CkXml_Create();

    CkXml_LoadXml(xml,subjectAltNameXml);

    i = 0;
    count_i = CkXml_NumChildrenHavingTag(xml,"name");
    while (i < count_i) {
        CkXml_putI(xml,i);
        oid = CkXml_chilkatPath(xml,"name[i]|(oid)");
        name = CkXml_getChildContent(xml,"name[i]");
        i = i + 1;
    }

    rfc822Name = CkXml_getChildContent(xml,"rfc822Name");


    CkCert_Dispose(cert);
    CkXml_Dispose(xml);

    }