(C) Convert CRL PEM to XML

Loads a CRL (Certificate Revocation List) from the PEM file format and converts to XML to allow for visual examination and parsing.

Note: This example requires Chilkat v9.5.0.77 or greater.

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#include <C_CkPem.h>
#include <C_CkAsn.h>
#include <C_CkXml.h>

void ChilkatSample(void)
    {
    HCkPem pem;
    BOOL success;
    int numCrls;
    int i;
    HCkAsn asn;
    HCkXml xml;
    const char *crlBase64;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example requires Chilkat v9.5.0.77 or greater.
    pem = CkPem_Create();

    CkPem_putVerboseLogging(pem,TRUE);
    success = CkPem_LoadPemFile(pem,"qa_data/crl/sampleCrl.pem","password_not_used");
    if (success != TRUE) {
        printf("%s\n",CkPem_lastErrorText(pem));
        CkPem_Dispose(pem);
        return;
    }

    numCrls = CkPem_getNumCrls(pem);
    i = 0;

    asn = CkAsn_Create();
    xml = CkXml_Create();
    while (i < numCrls) {

        // Get the CRL as base64 (multi-line)
        crlBase64 = CkPem_getEncodedItem(pem,"crl","","base64_mime",i);
        if (CkPem_getLastMethodSuccess(pem) != TRUE) {
            printf("%s\n",CkPem_lastErrorText(pem));
            CkPem_Dispose(pem);
            CkAsn_Dispose(asn);
            CkXml_Dispose(xml);
            return;
        }

        printf("%s\n",crlBase64);

        success = CkAsn_LoadEncoded(asn,crlBase64,"base64");
        if (success != TRUE) {
            printf("%s\n",CkAsn_lastErrorText(asn));
            CkPem_Dispose(pem);
            CkAsn_Dispose(asn);
            CkXml_Dispose(xml);
            return;
        }

        // Convert ASN.1 to XML and load into xml and re-emit for pretty printing..
        CkXml_LoadXml(xml,CkAsn_asnToXml(asn));
        printf("%s\n",CkXml_getXml(xml));

        // Use this online tool to generate parsing code from CRL XML: 
        // Generate Parsing Code from XML

        printf("-------------------------------------\n");
        i = i + 1;
    }



    CkPem_Dispose(pem);
    CkAsn_Dispose(asn);
    CkXml_Dispose(xml);

    }