mirror of git://gcc.gnu.org/git/gcc.git
488 lines
14 KiB
Java
488 lines
14 KiB
Java
/* X509CRL.java -- X.509 certificate revocation list.
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Copyright (C) 2003, 2004, 2010 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 gnu.java.security.x509;
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import gnu.java.security.Configuration;
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import gnu.java.security.OID;
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import gnu.java.security.der.BitString;
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import gnu.java.security.der.DER;
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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 gnu.java.security.x509.ext.Extension;
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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.security.InvalidKeyException;
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import java.security.NoSuchAlgorithmException;
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import java.security.NoSuchProviderException;
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import java.security.Principal;
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import java.security.PublicKey;
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import java.security.Signature;
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import java.security.SignatureException;
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import java.security.cert.CRLException;
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import java.security.cert.Certificate;
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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.HashMap;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Set;
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import java.util.logging.Logger;
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import javax.security.auth.x500.X500Principal;
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/**
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* X.509 certificate revocation lists.
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*
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* @author Casey Marshall (rsdio@metastatic.org)
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*/
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public class X509CRL extends java.security.cert.X509CRL
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implements GnuPKIExtension
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{
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private static final Logger log = Configuration.DEBUG ?
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Logger.getLogger(X509CRL.class.getName()) : null;
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private static final OID ID_DSA = new OID("1.2.840.10040.4.1");
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private static final OID ID_DSA_WITH_SHA1 = new OID("1.2.840.10040.4.3");
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private static final OID ID_RSA = new OID("1.2.840.113549.1.1.1");
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private static final OID ID_RSA_WITH_MD2 = new OID("1.2.840.113549.1.1.2");
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private static final OID ID_RSA_WITH_MD5 = new OID("1.2.840.113549.1.1.4");
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private static final OID ID_RSA_WITH_SHA1 = new OID("1.2.840.113549.1.1.5");
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private byte[] encoded;
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private byte[] tbsCRLBytes;
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private int version;
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private OID algId;
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private byte[] algParams;
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private Date thisUpdate;
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private Date nextUpdate;
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private X500DistinguishedName issuerDN;
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private HashMap revokedCerts;
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private HashMap extensions;
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private OID sigAlg;
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private byte[] sigAlgParams;
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private byte[] rawSig;
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private byte[] signature;
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// Constructors.
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// ------------------------------------------------------------------------
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/**
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* Create a new X.509 CRL.
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*
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* @param encoded The DER encoded CRL.
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* @throws CRLException If the input bytes are incorrect.
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* @throws IOException If the input bytes cannot be read.
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*/
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public X509CRL(InputStream encoded) throws CRLException, IOException
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{
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super();
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revokedCerts = new HashMap();
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extensions = new HashMap();
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try
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{
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parse(encoded);
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}
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catch (IOException ioe)
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{
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ioe.printStackTrace();
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throw ioe;
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}
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catch (Exception x)
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{
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x.printStackTrace();
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throw new CRLException(x.toString());
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}
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}
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// X509CRL methods.
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// ------------------------------------------------------------------------
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public boolean equals(Object o)
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{
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if (!(o instanceof X509CRL))
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return false;
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return ((X509CRL) o).getRevokedCertificates().equals(revokedCerts.values());
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}
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public int hashCode()
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{
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return revokedCerts.hashCode();
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}
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public byte[] getEncoded() throws CRLException
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{
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return (byte[]) encoded.clone();
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}
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public void verify(PublicKey key)
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throws CRLException, NoSuchAlgorithmException, InvalidKeyException,
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NoSuchProviderException, SignatureException
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{
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Signature sig = Signature.getInstance(sigAlg.toString());
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doVerify(sig, key);
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}
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public void verify(PublicKey key, String provider)
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throws CRLException, NoSuchAlgorithmException, InvalidKeyException,
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NoSuchProviderException, SignatureException
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{
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Signature sig = Signature.getInstance(sigAlg.toString(), provider);
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doVerify(sig, key);
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}
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public int getVersion()
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{
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return version;
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}
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public Principal getIssuerDN()
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{
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return issuerDN;
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}
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public X500Principal getIssuerX500Principal()
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{
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return new X500Principal(issuerDN.getDer());
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}
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public Date getThisUpdate()
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{
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return (Date) thisUpdate.clone();
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}
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public Date getNextUpdate()
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{
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if (nextUpdate != null)
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return (Date) nextUpdate.clone();
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return null;
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}
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public java.security.cert.X509CRLEntry getRevokedCertificate(BigInteger serialNo)
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{
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return (java.security.cert.X509CRLEntry) revokedCerts.get(serialNo);
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}
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public Set getRevokedCertificates()
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{
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return Collections.unmodifiableSet(new HashSet(revokedCerts.values()));
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}
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public byte[] getTBSCertList() throws CRLException
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{
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return (byte[]) tbsCRLBytes.clone();
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}
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public byte[] getSignature()
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{
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return (byte[]) rawSig.clone();
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}
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public String getSigAlgName()
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{
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if (sigAlg.equals(ID_DSA_WITH_SHA1))
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return "SHA1withDSA";
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if (sigAlg.equals(ID_RSA_WITH_MD2))
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return "MD2withRSA";
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if (sigAlg.equals(ID_RSA_WITH_MD5))
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return "MD5withRSA";
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if (sigAlg.equals(ID_RSA_WITH_SHA1))
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return "SHA1withRSA";
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return "unknown";
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}
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public String getSigAlgOID()
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{
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return sigAlg.toString();
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}
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public byte[] getSigAlgParams()
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{
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if (sigAlgParams != null)
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return (byte[]) sigAlgParams.clone();
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return null;
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}
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// X509Extension methods.
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// ------------------------------------------------------------------------
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public boolean hasUnsupportedCriticalExtension()
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{
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for (Iterator it = extensions.values().iterator(); it.hasNext(); )
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{
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Extension e = (Extension) it.next();
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if (e.isCritical() && !e.isSupported())
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return true;
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}
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return false;
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}
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public Set getCriticalExtensionOIDs()
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{
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HashSet s = new HashSet();
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for (Iterator it = extensions.values().iterator(); it.hasNext(); )
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{
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Extension e = (Extension) it.next();
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if (e.isCritical())
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s.add(e.getOid().toString());
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}
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return Collections.unmodifiableSet(s);
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}
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public Set getNonCriticalExtensionOIDs()
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{
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HashSet s = new HashSet();
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for (Iterator it = extensions.values().iterator(); it.hasNext(); )
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{
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Extension e = (Extension) it.next();
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if (!e.isCritical())
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s.add(e.getOid().toString());
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}
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return Collections.unmodifiableSet(s);
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}
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public byte[] getExtensionValue(String oid)
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{
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Extension e = getExtension(new OID(oid));
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if (e != null)
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{
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return e.getValue().getEncoded();
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}
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return null;
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}
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// GnuPKIExtension method.
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// -------------------------------------------------------------------------
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public Extension getExtension(OID oid)
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{
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return (Extension) extensions.get(oid);
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}
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public Collection getExtensions()
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{
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return extensions.values();
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}
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// CRL methods.
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// -------------------------------------------------------------------------
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public String toString()
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{
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return X509CRL.class.getName();
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}
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public boolean isRevoked(Certificate cert)
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{
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if (!(cert instanceof java.security.cert.X509Certificate))
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throw new IllegalArgumentException("not a X.509 certificate");
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BigInteger certSerial =
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((java.security.cert.X509Certificate) cert).getSerialNumber();
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X509CRLEntry ent = (X509CRLEntry) revokedCerts.get(certSerial);
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if (ent == null)
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return false;
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return ent.getRevocationDate().compareTo(new Date()) < 0;
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}
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// Own methods.
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// ------------------------------------------------------------------------
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private void doVerify(Signature sig, PublicKey key)
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throws CRLException, InvalidKeyException, SignatureException
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{
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sig.initVerify(key);
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sig.update(tbsCRLBytes);
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if (!sig.verify(signature))
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throw new CRLException("signature not verified");
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}
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private void parse(InputStream in) throws Exception
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{
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// CertificateList ::= SEQUENCE {
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DERReader der = new DERReader(in);
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DERValue val = der.read();
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if (Configuration.DEBUG)
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log.fine("start CertificateList len == " + val.getLength());
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if (!val.isConstructed())
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throw new IOException("malformed CertificateList");
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encoded = val.getEncoded();
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// tbsCertList ::= SEQUENCE { -- TBSCertList
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val = der.read();
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if (!val.isConstructed())
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throw new IOException("malformed TBSCertList");
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if (Configuration.DEBUG)
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log.fine("start tbsCertList len == " + val.getLength());
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tbsCRLBytes = val.getEncoded();
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// version Version OPTIONAL,
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// -- If present must be v2
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val = der.read();
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if (val.getValue() instanceof BigInteger)
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{
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version = ((BigInteger) val.getValue()).intValue() + 1;
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val = der.read();
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}
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else
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version = 1;
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if (Configuration.DEBUG)
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log.fine("read version == " + version);
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// signature AlgorithmIdentifier,
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if (Configuration.DEBUG)
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log.fine("start AlgorithmIdentifier len == " + val.getLength());
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if (!val.isConstructed())
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throw new IOException("malformed AlgorithmIdentifier");
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DERValue algIdVal = der.read();
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algId = (OID) algIdVal.getValue();
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if (Configuration.DEBUG)
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log.fine("read object identifier == " + algId);
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if (val.getLength() > algIdVal.getEncodedLength())
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{
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val = der.read();
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if (Configuration.DEBUG)
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log.fine("read parameters len == " + val.getEncodedLength());
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algParams = val.getEncoded();
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if (val.isConstructed())
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in.skip(val.getLength());
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}
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// issuer Name,
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val = der.read();
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issuerDN = new X500DistinguishedName(val.getEncoded());
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der.skip(val.getLength());
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if (Configuration.DEBUG)
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log.fine("read issuer == " + issuerDN);
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// thisUpdate Time,
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thisUpdate = (Date) der.read().getValue();
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if (Configuration.DEBUG)
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log.fine("read thisUpdate == " + thisUpdate);
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// nextUpdate Time OPTIONAL,
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val = der.read();
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if (val.getValue() instanceof Date)
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{
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nextUpdate = (Date) val.getValue();
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if (Configuration.DEBUG)
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log.fine("read nextUpdate == " + nextUpdate);
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val = der.read();
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}
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// revokedCertificates SEQUENCE OF SEQUENCE {
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// -- X509CRLEntry objects...
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// } OPTIONAL,
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if (val.getTag() != 0)
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{
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int len = 0;
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while (len < val.getLength())
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{
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X509CRLEntry entry = new X509CRLEntry(version, der);
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revokedCerts.put(entry.getSerialNumber(), entry);
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len += entry.getEncoded().length;
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}
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val = der.read();
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}
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// crlExtensions [0] EXPLICIT Extensions OPTIONAL
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// -- if present MUST be v2
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if (val.getTagClass() != DER.UNIVERSAL && val.getTag() == 0)
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{
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if (version < 2)
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throw new IOException("extra data in CRL");
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DERValue exts = der.read();
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if (!exts.isConstructed())
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throw new IOException("malformed Extensions");
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if (Configuration.DEBUG)
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log.fine("start Extensions len == " + exts.getLength());
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int len = 0;
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while (len < exts.getLength())
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{
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DERValue ext = der.read();
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if (!ext.isConstructed())
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throw new IOException("malformed Extension");
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Extension e = new Extension(ext.getEncoded());
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extensions.put(e.getOid(), e);
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der.skip(ext.getLength());
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len += ext.getEncodedLength();
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if (Configuration.DEBUG)
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log.fine("current count == " + len);
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}
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val = der.read();
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}
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if (Configuration.DEBUG)
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log.fine("read tag == " + val.getTag());
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if (!val.isConstructed())
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throw new IOException("malformed AlgorithmIdentifier");
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if (Configuration.DEBUG)
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log.fine("start AlgorithmIdentifier len == " + val.getLength());
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DERValue sigAlgVal = der.read();
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if (Configuration.DEBUG)
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log.fine("read tag == " + sigAlgVal.getTag());
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if (sigAlgVal.getTag() != DER.OBJECT_IDENTIFIER)
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throw new IOException("malformed AlgorithmIdentifier");
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sigAlg = (OID) sigAlgVal.getValue();
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if (Configuration.DEBUG)
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{
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log.fine("signature id == " + sigAlg);
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log.fine("sigAlgVal length == " + sigAlgVal.getEncodedLength());
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}
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if (val.getLength() > sigAlgVal.getEncodedLength())
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{
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val = der.read();
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if (Configuration.DEBUG)
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log.fine("sig params tag = " + val.getTag() + " len == "
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+ val.getEncodedLength());
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sigAlgParams = (byte[]) val.getEncoded();
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if (val.isConstructed())
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in.skip(val.getLength());
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}
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val = der.read();
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if (Configuration.DEBUG)
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log.fine("read tag = " + val.getTag());
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rawSig = val.getEncoded();
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signature = ((BitString) val.getValue()).toByteArray();
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}
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}
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