gomp-20050608-branch/libjava/classpath/gnu/java/security/x509/X509CRLSelectorImpl.java

   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 }
 138