source: qca/trunk/examples/certtest/certtest.cpp@ 26

#include<qdom.h>
#include<qfile.h>
#include"base64.h"
#include"qca.h"

QCA::Cert readCertXml(const QDomElement &e)
{
        QCA::Cert cert;
        // there should be one child data tag
        QDomElement data = e.elementsByTagName("data").item(0).toElement();
        if(!data.isNull())
                cert.fromDER(Base64::stringToArray(data.text()));
        return cert;
}

void showCertInfo(const QCA::Cert &cert)
{
        printf(" CN: %s\n", cert.subject()["CN"].latin1());
        printf(" Valid from: %s, until %s\n",
                cert.notBefore().toString().latin1(),
                cert.notAfter().toString().latin1());
        printf(" PEM:\n%s\n", cert.toPEM().latin1());
}

int main()
{
        if(!QCA::isSupported(QCA::CAP_X509)) {
                printf("X509 not supported!\n");
                return 1;
        }

        // open the Psi rootcerts file
        QFile f("/usr/local/share/psi/certs/rootcert.xml");
        if(!f.open(IO_ReadOnly)) {
                printf("unable to open %s\n", f.name().latin1());
                return 1;
        }
        QDomDocument doc;
        doc.setContent(&f);
        f.close();

        QDomElement base = doc.documentElement();
        if(base.tagName() != "store") {
                printf("wrong format of %s\n", f.name().latin1());
                return 1;
        }
        QDomNodeList cl = base.elementsByTagName("certificate");
        if(cl.count() == 0) {
                printf("no certs found in %s\n", f.name().latin1());
                return 1;
        }

        for(int n = 0; n < (int)cl.count(); ++n) {
                printf("-- Cert %d --\n", n);
                QCA::Cert cert = readCertXml(cl.item(n).toElement());
                if(cert.isNull()) {
                        printf("error reading cert\n");
                        continue;
                }
                showCertInfo(cert);
        }

        return 0;
}