Source for gnu.java.security.x509.X509CRLSelectorImpl

   1: /* X509CRLSelectorImpl.java -- implementation of an X509CRLSelector.
   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;
  40: 
  41: import java.io.IOException;
  42: 
  43: import java.security.Principal;
  44: import java.security.cert.CRL;
  45: import java.security.cert.CRLSelector;
  46: import java.security.cert.X509CRL;
  47: 
  48: import java.util.Collection;
  49: import java.util.Collections;
  50: import java.util.HashSet;
  51: import java.util.Iterator;
  52: import java.util.Set;
  53: 
  54: import javax.security.auth.x500.X500Principal;
  55: 
  56: /**
  57:  * Sun's implementation of X509CRLSelector sucks. This one tries to work
  58:  * better.
  59:  */
  60: public class X509CRLSelectorImpl implements CRLSelector
  61: {
  62: 
  63:   // Fields.
  64:   // -------------------------------------------------------------------------
  65: 
  66:   private Set issuerNames;
  67: 
  68:   // Constructor.
  69:   // -------------------------------------------------------------------------
  70: 
  71:   public X509CRLSelectorImpl()
  72:   {
  73:     issuerNames = new HashSet();
  74:   }
  75: 
  76:   // Instance methods.
  77:   // -------------------------------------------------------------------------
  78: 
  79:   public void addIssuerName(byte[] issuerName) throws IOException
  80:   {
  81:     issuerNames.add(new X500DistinguishedName(issuerName));
  82:   }
  83: 
  84:   public void addIssuerName(String issuerName)
  85:   {
  86:     issuerNames.add(new X500DistinguishedName(issuerName));
  87:   }
  88: 
  89:   public void addIssuerName(Principal issuerName) throws IOException
  90:   {
  91:     if (issuerName instanceof X500DistinguishedName)
  92:       issuerNames.add(issuerName);
  93:     else if (issuerName instanceof X500Principal)
  94:       issuerNames.add(new X500DistinguishedName(((X500Principal) issuerName).getEncoded()));
  95:     else
  96:       issuerNames.add(new X500DistinguishedName(issuerName.getName()));
  97:   }
  98: 
  99:   public Collection getIssuerNames()
 100:   {
 101:     return Collections.unmodifiableSet(issuerNames);
 102:   }
 103: 
 104:   public Object clone()
 105:   {
 106:     X509CRLSelectorImpl copy = new X509CRLSelectorImpl();
 107:     copy.issuerNames.addAll(issuerNames);
 108:     return copy;
 109:   }
 110: 
 111:   public boolean match(CRL crl)
 112:   {
 113:     if (!(crl instanceof X509CRL))
 114:       return false;
 115:     try
 116:       {
 117:         Principal p = ((X509CRL) crl).getIssuerDN();
 118:         X500DistinguishedName thisName = null;
 119:         if (p instanceof X500DistinguishedName)
 120:           thisName = (X500DistinguishedName) p;
 121:         else if (p instanceof X500Principal)
 122:           thisName = new X500DistinguishedName(((X500Principal) p).getEncoded());
 123:         else
 124:           thisName = new X500DistinguishedName(p.getName());
 125:         for (Iterator it = issuerNames.iterator(); it.hasNext(); )
 126:           {
 127:             X500DistinguishedName name = (X500DistinguishedName) it.next();
 128:             if (thisName.equals(name))
 129:               return true;
 130:           }
 131:       }
 132:     catch (Exception x)
 133:       {
 134:       }
 135:     return false;
 136:   }
 137: }