Source for gnu.java.security.x509.ext.PolicyConstraint

   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., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 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 gnu.java.security.OID;
  42: import gnu.java.security.der.DERReader;
  43: import gnu.java.security.der.DERValue;
  44: 
  45: import java.io.IOException;
  46: import java.math.BigInteger;
  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: }