libjava/gnu/java/security/x509/ext/PolicyConstraint.java

   1 /* PolicyConstraint.java -- policyConstraint extension
   2    Copyright (C) 2004  Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package gnu.java.security.x509.ext;
  40
  41 import java.io.IOException;
  42 import java.math.BigInteger;
  43
  44 import gnu.java.security.OID;
  45 import gnu.java.security.der.DERReader;
  46 import gnu.java.security.der.DERValue;
  47
  48 public class PolicyConstraint extends Extension.Value
  49 {
  50
  51   // Constants and fields.
  52   // -------------------------------------------------------------------------
  53
  54   public static final OID ID = new OID ("2.5.29.36");
  55
  56   private final int requireExplicitPolicy;
  57   private final int inhibitPolicyMapping;
  58
  59   // Constructors.
  60   // -------------------------------------------------------------------------
  61
  62   public PolicyConstraint (final byte[] encoded) throws IOException
  63   {
  64     super (encoded);
  65     int rpc = -1, ipm = -1;
  66     DERReader der = new DERReader(encoded);
  67     DERValue pc = der.read();
  68     if (!pc.isConstructed())
  69       throw new IOException("malformed PolicyConstraints");
  70     DERValue val;
  71     int len = pc.getLength();
  72     while (len > 0)
  73       {
  74         val = der.read();
  75         if (val.getTag() == 0)
  76           rpc = new BigInteger ((byte[]) val.getValue()).intValue();
  77         else if (val.getTag() == 1)
  78           ipm = new BigInteger ((byte[]) val.getValue()).intValue();
  79         else
  80           throw new IOException ("invalid policy constraint");
  81         len -= val.getEncodedLength();
  82       }
  83
  84     requireExplicitPolicy = rpc;
  85     inhibitPolicyMapping = ipm;
  86   }
  87
  88   // Instance methods.
  89   // -------------------------------------------------------------------------
  90
  91   public int getRequireExplicitPolicy()
  92   {
  93     return requireExplicitPolicy;
  94   }
  95
  96   public int getInhibitPolicyMapping()
  97   {
  98     return inhibitPolicyMapping;
  99   }
 100
 101   public String toString()
 102   {
 103     return PolicyConstraint.class.getName() + " [ requireExplicitPolicy=" +
 104       requireExplicitPolicy + " inhibitPolicyMapping=" + inhibitPolicyMapping
 105       + " ]";
 106   }
 107 }