org.bouncycastle.asn1.x509.PolicyQualifierInfo Maven / Gradle / Ivy

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package org.bouncycastle.asn1.x509;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEREncodable;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERIA5String;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.DERSequence;

/**
 * Policy qualifiers, used in the X509V3 CertificatePolicies
 * extension.
 * 
 *  *   PolicyQualifierInfo ::= SEQUENCE {
 *       policyQualifierId  PolicyQualifierId,
 *       qualifier          ANY DEFINED BY policyQualifierId }
 * 
 */
public class PolicyQualifierInfo
    extends ASN1Encodable
{
   private DERObjectIdentifier policyQualifierId;
   private DEREncodable        qualifier;

   /**
    * Creates a new PolicyQualifierInfo instance.
    *
    * @param policyQualifierId a PolicyQualifierId value
    * @param qualifier the qualifier, defined by the above field.
    */
   public PolicyQualifierInfo(
       DERObjectIdentifier policyQualifierId,
       DEREncodable qualifier) 
   {
      this.policyQualifierId = policyQualifierId;
      this.qualifier = qualifier;
   }

   /**
    * Creates a new PolicyQualifierInfo containing a
    * cPSuri qualifier.
    *
    * @param cps the CPS (certification practice statement) uri as a
    * String.
    */
   public PolicyQualifierInfo(
       String cps) 
   {
      policyQualifierId = PolicyQualifierId.id_qt_cps;
      qualifier = new DERIA5String (cps);
   }

   /**
    * Creates a new PolicyQualifierInfo instance.
    *
    * @param as PolicyQualifierInfo X509 structure
    * encoded as an ASN1Sequence. 
    */
   public PolicyQualifierInfo(
       ASN1Sequence as)
   {
        if (as.size() != 2)
        {
            throw new IllegalArgumentException("Bad sequence size: "
                    + as.size());
        }

        policyQualifierId = DERObjectIdentifier.getInstance(as.getObjectAt(0));
        qualifier = as.getObjectAt(1);
   }

   public static PolicyQualifierInfo getInstance(
       Object as) 
   {
        if (as instanceof PolicyQualifierInfo)
        {
            return (PolicyQualifierInfo)as;
        }
        else if (as instanceof ASN1Sequence)
        {
            return new PolicyQualifierInfo((ASN1Sequence)as);
        }

        throw new IllegalArgumentException("unknown object in getInstance.");
   }


   public DERObjectIdentifier getPolicyQualifierId()
   {
       return policyQualifierId;
   }

   public DEREncodable getQualifier()
   {
       return qualifier;
   }
   
   /**
    * Returns a DER-encodable representation of this instance. 
    *
    * @return a DERObject value
    */
   public DERObject toASN1Object() 
   {
      ASN1EncodableVector dev = new ASN1EncodableVector();
      dev.add(policyQualifierId);
      dev.add(qualifier);

      return new DERSequence(dev);
   }
}