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

   1: /* PolicyMappings.java -- policy mappings 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.DER;
  43: import gnu.java.security.der.DERReader;
  44: import gnu.java.security.der.DERValue;
  45: 
  46: import java.io.IOException;
  47: import java.util.Collections;
  48: import java.util.HashMap;
  49: import java.util.Map;
  50: 
  51: public class PolicyMappings extends Extension.Value
  52: {
  53: 
  54:   // Constants and fields.
  55:   // -------------------------------------------------------------------------
  56: 
  57:   public static final OID ID = new OID("2.5.29.33");
  58: 
  59:   private final Map mappings;
  60: 
  61:   // Constructor.
  62:   // -------------------------------------------------------------------------
  63: 
  64:   public PolicyMappings(final byte[] encoded) throws IOException
  65:   {
  66:     super(encoded);
  67:     DERReader der = new DERReader(encoded);
  68:     DERValue maps = der.read();
  69:     if (!maps.isConstructed())
  70:       throw new IOException("malformed PolicyMappings");
  71:     int len = 0;
  72:     HashMap _mappings = new HashMap();
  73:     while (len < maps.getLength())
  74:       {
  75:         DERValue map = der.read();
  76:         if (!map.isConstructed())
  77:           throw new IOException("malformed PolicyMapping");
  78:         DERValue val = der.read();
  79:         if (val.getTag() != DER.OBJECT_IDENTIFIER)
  80:           throw new IOException("malformed PolicyMapping");
  81:         OID issuerPolicy = (OID) val.getValue();
  82:         val = der.read();
  83:         if (val.getTag() != DER.OBJECT_IDENTIFIER)
  84:           throw new IOException("malformed PolicyMapping");
  85:         OID subjectPolicy = (OID) val.getValue();
  86:         _mappings.put(issuerPolicy, subjectPolicy);
  87:         len += map.getEncodedLength();
  88:       }
  89:     mappings = Collections.unmodifiableMap(_mappings);
  90:   }
  91: 
  92:   // Instance methods.
  93:   // -------------------------------------------------------------------------
  94: 
  95:   public OID getSubjectDomainPolicy(OID issuerDomainPolicy)
  96:   {
  97:     return (OID) mappings.get(issuerDomainPolicy);
  98:   }
  99: 
 100:   public String toString()
 101:   {
 102:     return PolicyMappings.class.getName() + " [ " + mappings + " ]";
 103:   }
 104: }