content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one or more
   *  contributor license agreements.  See the NOTICE file distributed with
   *  this work for additional information regarding copyright ownership.
   *  The ASF licenses this file to You under the Apache License, Version 2.0
   *  (the "License"); you may not use this file except in compliance with
   *  the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   */
  
  package android.framework.org.apache.harmony.security_custom.x509;
  
  import java.io.IOException;
  import javax.security.auth.x500.X500Principal;
  import android.framework.org.apache.harmony.security_custom.asn1.ASN1Sequence;
  import android.framework.org.apache.harmony.security_custom.asn1.ASN1Type;
  import android.framework.org.apache.harmony.security_custom.asn1.BerInputStream;
  import android.framework.org.apache.harmony.security_custom.x501.Name;
  
  /**
   * CRL Entry's Certificate Issuer Extension (OID = 2.5.29.29).
   * It is a CRL entry extension and contains the GeneralNames describing
   * the issuer of revoked certificate. Its ASN.1 notation is as follows:
   * <pre>
   *   id-ce-certificateIssuer   OBJECT IDENTIFIER ::= { id-ce 29 }
   *
   *   certificateIssuer ::=     GeneralNames
   * </pre>
   * (as specified in RFC 3280)
   * In java implementation it is presumed that GeneralNames consist of
   * one element and its type is directoryName.
   */
  public final class CertificateIssuer extends ExtensionValue {
      /** certificate issuer value */
      private X500Principal issuer;
  
      /**
       * Creates an object on the base of its encoded form.
       */
      public CertificateIssuer(byte[] encoding) {
          super(encoding);
      }
  
      public X500Principal getIssuer() throws IOException {
          if (issuer == null) {
              issuer = (X500Principal) ASN1.decode(getEncoded());
          }
          return issuer;
      }
  
      @Override public void dumpValue(StringBuilder sb, String prefix) {
          sb.append(prefix).append("Certificate Issuer: ");
          if (issuer == null) {
              try {
                  issuer = getIssuer();
              } catch (IOException e) {
                  // incorrect extension value encoding
                  sb.append("Unparseable (incorrect!) extension value:\n");
                  super.dumpValue(sb);
              }
          }
          sb.append(issuer).append('\n');
      }
  
      /**
       * ASN.1 Encoder/Decoder.
       */
      public static final ASN1Type ASN1 = new ASN1Sequence(new ASN1Type[] { GeneralName.ASN1 }) {
          @Override public Object getDecodedObject(BerInputStream in) {
              return ((Name) ((GeneralName) ((Object[]) in.content)[0])
                      .getName()).getX500Principal();
          }
  
          @Override protected void getValues(Object object, Object[] values) {
              values[0] = object;
          }
      };
  }
  