/**
* Add a given extension field for the standard extensions tag (tag 3) copying the extension value
* from another certificate.
*
* @param oid the OID defining the extension type.
* @param isCritical true if the copied extension is to be marked as critical, false otherwise.
* @param certHolder the holder for the certificate that the extension is to be copied from.
* @return this builder object.
*/
public X509v3CertificateBuilder copyAndAddExtension(
ASN1ObjectIdentifier oid, boolean isCritical, X509CertificateHolder certHolder) {
X509CertificateStructure cert = certHolder.toASN1Structure();
X509Extension extension = cert.getTBSCertificate().getExtensions().getExtension(oid);
if (extension == null) {
throw new NullPointerException("extension " + oid + " not present");
}
extGenerator.addExtension(oid, isCritical, extension.getValue().getOctets());
return this;
}
private static boolean certHasPolicy(X509Certificate cert, String sOid) {
try {
if (m_logger.isDebugEnabled())
m_logger.debug("Read cert policies: " + cert.getSerialNumber().toString());
ByteArrayInputStream bIn = new ByteArrayInputStream(cert.getEncoded());
ASN1InputStream aIn = new ASN1InputStream(bIn);
ASN1Sequence seq = (ASN1Sequence) aIn.readObject();
X509CertificateStructure obj = new X509CertificateStructure(seq);
TBSCertificateStructure tbsCert = obj.getTBSCertificate();
if (tbsCert.getVersion() == 3) {
X509Extensions ext = tbsCert.getExtensions();
if (ext != null) {
Enumeration en = ext.oids();
while (en.hasMoreElements()) {
DERObjectIdentifier oid = (DERObjectIdentifier) en.nextElement();
X509Extension extVal = ext.getExtension(oid);
ASN1OctetString oct = extVal.getValue();
ASN1InputStream extIn = new ASN1InputStream(new ByteArrayInputStream(oct.getOctets()));
// if (oid.equals(X509Extensions.CertificatePolicies)) { // bc 146 ja jdk 1.6 puhul -
// X509Extension.certificatePolicies
if (oid.equals(X509Extension.certificatePolicies)) { // bc 146 ja jdk 1.6 puhul -
// X509Extension.certificatePolicies
ASN1Sequence cp = (ASN1Sequence) extIn.readObject();
for (int i = 0; i != cp.size(); i++) {
PolicyInformation pol = PolicyInformation.getInstance(cp.getObjectAt(i));
DERObjectIdentifier dOid = pol.getPolicyIdentifier();
String soid2 = dOid.getId();
if (m_logger.isDebugEnabled()) m_logger.debug("Policy: " + soid2);
if (soid2.startsWith(sOid)) return true;
}
}
}
}
}
} catch (Exception ex) {
m_logger.error("Error reading cert policies: " + ex);
}
return false;
}
public byte[] getExtensionValue(String oid) {
X509Extensions extensions = cert.getAcinfo().getExtensions();
if (extensions != null) {
X509Extension ext = extensions.getExtension(new DERObjectIdentifier(oid));
if (ext != null) {
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
DEROutputStream dOut = new DEROutputStream(bOut);
try {
dOut.writeObject(ext.getValue());
return bOut.toByteArray();
} catch (Exception e) {
throw new RuntimeException("error encoding " + e.toString());
}
}
}
return null;
}
/**
* Extracts the value of a certificate extension.
*
* @param ext the certificate extension to extract the value from.
* @throws IOException if extraction fails.
*/
public static DERObject getExtensionObject(X509Extension ext) throws IOException {
return toDERObject(ext.getValue().getOctets());
}
