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.
   */
  
  /**
  * @author Alexander Y. Kleymenov
  * @version $Revision$
  */
  
  package android.framework.org.apache.harmony.security_custom.x509;
  
  import java.io.IOException;
  import java.util.Collection;
  import java.util.List;
  import android.framework.org.apache.harmony.security_custom.asn1.ASN1SequenceOf;
  import android.framework.org.apache.harmony.security_custom.asn1.ASN1Type;
  import android.framework.org.apache.harmony.security_custom.asn1.BerInputStream;
  
  /**
   * The class encapsulates the ASN.1 DER encoding/decoding work
   * with the CRL Distribution Points which is the part of X.509 Certificate
   * (as specified in RFC 3280 -
   *  Internet X.509 Public Key Infrastructure.
   *  Certificate and Certificate Revocation List (CRL) Profile.
   *  http://www.ietf.org/rfc/rfc3280.txt):
   *
   * <pre>
   *  CRLDistributionPoints ::= SEQUENCE SIZE (1..MAX) OF DistributionPoint
   *
   *  DistributionPoint ::= SEQUENCE {
   *        distributionPoint       [0]     DistributionPointName OPTIONAL,
   *        reasons                 [1]     ReasonFlags OPTIONAL,
   *        cRLIssuer               [2]     GeneralNames OPTIONAL
   *  }
   *
   *  DistributionPointName ::= CHOICE {
   *        fullName                [0]     GeneralNames,
   *        nameRelativeToCRLIssuer [1]     RelativeDistinguishedName
   *  }
   *
   *  ReasonFlags ::= BIT STRING {
   *        unused                  (0),
   *        keyCompromise           (1),
   *        cACompromise            (2),
   *        affiliationChanged      (3),
   *        superseded              (4),
   *        cessationOfOperation    (5),
   *        certificateHold         (6),
   *        privilegeWithdrawn      (7),
   *        aACompromise            (8)
   *  }
   * </pre>
   */
  public final class CRLDistributionPoints extends ExtensionValue {
      private List<DistributionPoint> distributionPoints;
      private byte[] encoding;
  
      private CRLDistributionPoints(List<DistributionPoint> distributionPoints, byte[] encoding) {
          if ((distributionPoints == null) || (distributionPoints.size() == 0)) {
              throw new IllegalArgumentException("distributionPoints are empty");
          }
          this.distributionPoints = distributionPoints;
          this.encoding = encoding;
      }
  
      @Override public byte[] getEncoded() {
          if (encoding == null) {
              encoding = ASN1.encode(this);
          }
          return encoding;
      }
  
      public static CRLDistributionPoints decode(byte[] encoding) throws IOException {
          return (CRLDistributionPoints) ASN1.decode(encoding);
      }
  
      @Override public void dumpValue(StringBuilder sb, String prefix) {
          sb.append(prefix).append("CRL Distribution Points: [\n");
          int number = 0;
          for (DistributionPoint distributionPoint : distributionPoints) {
              sb.append(prefix).append("  [").append(++number).append("]\n");
              distributionPoint.dumpValue(sb, prefix + "  ");
          }
          sb.append(prefix).append("]\n");
      }
  
      /**
       * Custom X.509 decoder.
       */
      public static final ASN1Type ASN1 = new ASN1SequenceOf(DistributionPoint.ASN1) {
          @Override public Object getDecodedObject(BerInputStream in) {
              return new CRLDistributionPoints((List<DistributionPoint>) in.content, in.getEncoded());
          }
  
          @Override public Collection<?> getValues(Object object) {
              CRLDistributionPoints dps = (CRLDistributionPoints) object;
              return dps.distributionPoints;
          }
      };
  }
  