mirror of git://gcc.gnu.org/git/gcc.git
443 lines
12 KiB
Java
443 lines
12 KiB
Java
/* X509CRLSelector.java -- selects X.509 CRLs by criteria.
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Copyright (C) 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.security.cert;
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import gnu.classpath.SystemProperties;
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import gnu.java.lang.CPStringBuilder;
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import gnu.java.security.der.DERReader;
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import gnu.java.security.der.DERValue;
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import java.io.IOException;
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import java.io.InputStream;
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import java.math.BigInteger;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.Date;
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import java.util.Iterator;
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import java.util.LinkedList;
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import java.util.List;
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import javax.security.auth.x500.X500Principal;
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/**
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* A class for matching X.509 certificate revocation lists by criteria.
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*
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* <p>Use of this class requires extensive knowledge of the Internet
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* Engineering Task Force's Public Key Infrastructure (X.509). The primary
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* document describing this standard is <a
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* href="http://www.ietf.org/rfc/rfc3280.txt">RFC 3280: Internet X.509
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* Public Key Infrastructure Certificate and Certificate Revocation List
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* (CRL) Profile</a>.
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*
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* <p>Note that this class is not thread-safe. If multiple threads will
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* use or modify this class then they need to synchronize on the object.
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*
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* @author Casey Marshall (csm@gnu.org)
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* @since 1.4
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*/
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public class X509CRLSelector implements CRLSelector, Cloneable
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{
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// Fields.
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// -------------------------------------------------------------------------
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private static final String CRL_NUMBER_ID = "2.5.29.20";
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private List issuerNames;
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private BigInteger maxCrlNumber;
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private BigInteger minCrlNumber;
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private Date date;
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private X509Certificate cert;
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// Constructor.
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// -------------------------------------------------------------------------
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/**
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* Creates a new CRL selector with no criteria enabled; i.e., every CRL
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* will be matched.
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*/
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public X509CRLSelector()
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{
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}
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// Instance methods.
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// -------------------------------------------------------------------------
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/**
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* Add an issuer name to the set of issuer names criteria, as the DER
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* encoded form.
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*
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* @param name The name to add, as DER bytes.
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* @throws IOException If the argument is not a valid DER-encoding.
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*/
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public void addIssuerName(byte[] name) throws IOException
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{
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X500Principal p = null;
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try
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{
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p = new X500Principal(name);
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}
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catch (IllegalArgumentException iae)
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{
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IOException ioe = new IOException("malformed name");
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ioe.initCause(iae);
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throw ioe;
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}
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if (issuerNames == null)
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issuerNames = new LinkedList();
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issuerNames.add(p);
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}
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/**
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* Add an issuer name to the set of issuer names criteria, as a
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* String representation.
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*
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* @param name The name to add.
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* @throws IOException If the argument is not a valid name.
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*/
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public void addIssuerName(String name) throws IOException
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{
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X500Principal p = null;
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try
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{
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p = new X500Principal(name);
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}
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catch (IllegalArgumentException iae)
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{
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IOException ioe = new IOException("malformed name: " + name);
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ioe.initCause(iae);
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throw ioe;
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}
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if (issuerNames == null)
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issuerNames = new LinkedList();
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issuerNames.add(p);
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}
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/**
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* Sets the issuer names criterion. Pass <code>null</code> to clear this
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* value. CRLs matched by this selector must have an issuer name in this
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* set.
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*
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* @param names The issuer names.
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* @throws IOException If any of the elements in the collection is not
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* a valid name.
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*/
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public void setIssuerNames(Collection<?> names) throws IOException
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{
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if (names == null)
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{
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issuerNames = null;
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return;
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}
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List l = new ArrayList(names.size());
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for (Iterator it = names.iterator(); it.hasNext(); )
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{
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Object o = it.next();
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if (o instanceof X500Principal)
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l.add(o);
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else if (o instanceof String)
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{
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try
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{
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l.add(new X500Principal((String) o));
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}
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catch (IllegalArgumentException iae)
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{
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IOException ioe = new IOException("malformed name: " + o);
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ioe.initCause(iae);
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throw ioe;
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}
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}
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else if (o instanceof byte[])
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{
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try
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{
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l.add(new X500Principal((byte[]) o));
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}
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catch (IllegalArgumentException iae)
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{
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IOException ioe = new IOException("malformed name");
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ioe.initCause(iae);
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throw ioe;
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}
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}
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else if (o instanceof InputStream)
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{
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try
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{
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l.add(new X500Principal((InputStream) o));
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}
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catch (IllegalArgumentException iae)
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{
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IOException ioe = new IOException("malformed name");
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ioe.initCause(iae);
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throw ioe;
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}
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}
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else
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throw new IOException("not a valid name: " +
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(o != null ? o.getClass().getName() : "null"));
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}
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issuerNames = l;
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}
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/**
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* Returns the set of issuer names that are matched by this selector,
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* or <code>null</code> if this criteria is not set. The returned
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* collection is not modifiable.
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*
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* @return The set of issuer names.
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*/
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public Collection<Object> getIssuerNames()
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{
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if (issuerNames != null)
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return Collections.unmodifiableList(issuerNames);
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else
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return null;
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}
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/**
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* Returns the maximum value of the CRLNumber extension present in
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* CRLs matched by this selector, or <code>null</code> if this
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* criteria is not set.
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*
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* @return The maximum CRL number.
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*/
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public BigInteger getMaxCRL()
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{
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return maxCrlNumber;
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}
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/**
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* Returns the minimum value of the CRLNumber extension present in
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* CRLs matched by this selector, or <code>null</code> if this
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* criteria is not set.
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*
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* @return The minimum CRL number.
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*/
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public BigInteger getMinCRL()
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{
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return minCrlNumber;
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}
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/**
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* Sets the maximum value of the CRLNumber extension present in CRLs
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* matched by this selector. Specify <code>null</code> to clear this
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* criterion.
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*
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* @param maxCrlNumber The maximum CRL number.
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*/
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public void setMaxCRLNumber(BigInteger maxCrlNumber)
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{
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this.maxCrlNumber = maxCrlNumber;
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}
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/**
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* Sets the minimum value of the CRLNumber extension present in CRLs
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* matched by this selector. Specify <code>null</code> to clear this
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* criterion.
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*
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* @param minCrlNumber The minimum CRL number.
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*/
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public void setMinCRLNumber(BigInteger minCrlNumber)
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{
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this.minCrlNumber = minCrlNumber;
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}
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/**
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* Returns the date when this CRL must be valid; that is, the date
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* must be after the thisUpdate date, but before the nextUpdate date.
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* Returns <code>null</code> if this criterion is not set.
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*
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* @return The date.
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*/
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public Date getDateAndTime()
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{
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return date != null ? (Date) date.clone() : null;
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}
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/**
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* Sets the date at which this CRL must be valid. Specify
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* <code>null</code> to clear this criterion.
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*
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* @param date The date.
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*/
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public void setDateAndTime(Date date)
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{
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this.date = date != null ? (Date) date.clone() : null;
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}
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/**
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* Returns the certificate being checked, or <code>null</code> if this
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* value is not set.
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*
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* @return The certificate.
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*/
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public X509Certificate getCertificateChecking()
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{
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return cert;
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}
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/**
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* Sets the certificate being checked. This is not a criterion, but
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* info used by certificate store implementations to aid in searching.
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*
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* @param cert The certificate.
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*/
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public void setCertificateChecking(X509Certificate cert)
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{
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this.cert = cert;
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}
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/**
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* Returns a string representation of this selector. The string will
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* only describe the enabled criteria, so if none are enabled this will
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* return a string that contains little else besides the class name.
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*
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* @return The string.
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*/
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public String toString()
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{
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CPStringBuilder str = new CPStringBuilder(X509CRLSelector.class.getName());
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String nl = SystemProperties.getProperty("line.separator");
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String eol = ";" + nl;
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str.append(" {").append(nl);
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if (issuerNames != null)
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str.append(" issuer names = ").append(issuerNames).append(eol);
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if (maxCrlNumber != null)
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str.append(" max CRL = ").append(maxCrlNumber).append(eol);
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if (minCrlNumber != null)
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str.append(" min CRL = ").append(minCrlNumber).append(eol);
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if (date != null)
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str.append(" date = ").append(date).append(eol);
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if (cert != null)
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str.append(" certificate = ").append(cert).append(eol);
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str.append("}").append(nl);
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return str.toString();
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}
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/**
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* Checks a CRL against the criteria of this selector, returning
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* <code>true</code> if the given CRL matches all the criteria.
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*
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* @param _crl The CRL being checked.
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* @return True if the CRL matches, false otherwise.
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*/
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public boolean match(CRL _crl)
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{
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if (!(_crl instanceof X509CRL))
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return false;
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X509CRL crl = (X509CRL) _crl;
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if (issuerNames != null)
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{
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if (!issuerNames.contains(crl.getIssuerX500Principal()))
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return false;
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}
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BigInteger crlNumber = null;
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if (maxCrlNumber != null)
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{
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byte[] b = crl.getExtensionValue(CRL_NUMBER_ID);
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if (b == null)
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return false;
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try
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{
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DERValue val = DERReader.read(b);
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if (!(val.getValue() instanceof BigInteger))
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return false;
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crlNumber = (BigInteger) val.getValue();
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}
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catch (IOException ioe)
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{
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return false;
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}
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if (maxCrlNumber.compareTo(crlNumber) < 0)
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return false;
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}
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if (minCrlNumber != null)
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{
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if (crlNumber == null)
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{
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byte[] b = crl.getExtensionValue(CRL_NUMBER_ID);
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if (b == null)
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return false;
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try
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{
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DERValue val = DERReader.read(b);
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if (!(val.getValue() instanceof BigInteger))
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return false;
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crlNumber = (BigInteger) val.getValue();
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}
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catch (IOException ioe)
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{
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return false;
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}
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}
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if (minCrlNumber.compareTo(crlNumber) > 0)
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return false;
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}
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if (date != null)
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{
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if (date.compareTo(crl.getThisUpdate()) < 0 ||
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date.compareTo(crl.getNextUpdate()) > 0)
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return false;
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}
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return true;
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}
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/**
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* Returns a copy of this object.
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*
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* @return The copy.
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*/
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public Object clone()
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{
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try
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{
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return super.clone();
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}
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catch (CloneNotSupportedException shouldNotHappen)
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{
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throw new Error(shouldNotHappen);
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}
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}
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}
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