/*
* Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package sun.security.x509;
import java.io.InputStream;
import java.io.IOException;
import java.security.cert.CRLException;
import java.security.cert.CertificateException;
import java.security.cert.X509CRLEntry;
import java.math.BigInteger;
import java.util.Collection;
import java.util.Date;
import java.util.Enumeration;
import java.util.Set;
import java.util.HashSet;
import javax.security.auth.x500.X500Principal;
import sun.security.util.*;
import sun.misc.HexDumpEncoder;
/**
* <p>Abstract class for a revoked certificate in a CRL.
* This class is for each entry in the <code>revokedCertificates</code>,
* so it deals with the inner <em>SEQUENCE</em>.
* The ASN.1 definition for this is:
* <pre>
* revokedCertificates SEQUENCE OF SEQUENCE {
* userCertificate CertificateSerialNumber,
* revocationDate ChoiceOfTime,
* crlEntryExtensions Extensions OPTIONAL
* -- if present, must be v2
* } OPTIONAL
*
* CertificateSerialNumber ::= INTEGER
*
* Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension
*
* Extension ::= SEQUENCE {
* extnId OBJECT IDENTIFIER,
* critical BOOLEAN DEFAULT FALSE,
* extnValue OCTET STRING
* -- contains a DER encoding of a value
* -- of the type registered for use with
* -- the extnId object identifier value
* }
* </pre>
*
* @author Hemma Prafullchandra
*/
public class X509CRLEntryImpl extends X509CRLEntry {
private SerialNumber serialNumber = null;
private Date revocationDate = null;
private CRLExtensions extensions = null;
private byte[] revokedCert = null;
private X500Principal certIssuer;
private final static boolean isExplicit = false;
private static final long YR_2050 = 2524636800000L;
/**
* Constructs a revoked certificate entry using the given
* serial number and revocation date.
*
* @param num the serial number of the revoked certificate.
* @param date the Date on which revocation took place.
*/
public X509CRLEntryImpl(BigInteger num, Date date) {
this.serialNumber = new SerialNumber(num);
this.revocationDate = date;
}
/**
* Constructs a revoked certificate entry using the given
* serial number, revocation date and the entry
* extensions.
*
* @param num the serial number of the revoked certificate.
* @param date the Date on which revocation took place.
* @param crlEntryExts the extensions for this entry.
*/
public X509CRLEntryImpl(BigInteger num, Date date,
CRLExtensions crlEntryExts) {
this.serialNumber = new SerialNumber(num);
this.revocationDate = date;
this.extensions = crlEntryExts;
}
/**
* Unmarshals a revoked certificate from its encoded form.
*
* @param revokedCert the encoded bytes.
* @exception CRLException on parsing errors.
*/
public X509CRLEntryImpl(byte[] revokedCert) throws CRLException {
try {
parse(new DerValue(revokedCert));
} catch (IOException e) {
this.revokedCert = null;
throw new CRLException("Parsing error: " + e.toString());
}
}
/**
* Unmarshals a revoked certificate from its encoded form.
*
* @param derVal the DER value containing the revoked certificate.
* @exception CRLException on parsing errors.
*/
public X509CRLEntryImpl(DerValue derValue) throws CRLException {
try {
parse(derValue);
} catch (IOException e) {
revokedCert = null;
throw new CRLException("Parsing error: " + e.toString());
}
}
/**
* Returns true if this revoked certificate entry has
* extensions, otherwise false.
*
* @return true if this CRL entry has extensions, otherwise
* false.
*/
public boolean hasExtensions() {
return (extensions != null);
}
/**
* Encodes the revoked certificate to an output stream.
*
* @param outStrm an output stream to which the encoded revoked
* certificate is written.
* @exception CRLException on encoding errors.
*/
public void encode(DerOutputStream outStrm) throws CRLException {
try {
if (revokedCert == null) {
DerOutputStream tmp = new DerOutputStream();
// sequence { serialNumber, revocationDate, extensions }
serialNumber.encode(tmp);
if (revocationDate.getTime() < YR_2050) {
tmp.putUTCTime(revocationDate);
} else {
tmp.putGeneralizedTime(revocationDate);
}
if (extensions != null)
extensions.encode(tmp, isExplicit);
DerOutputStream seq = new DerOutputStream();
seq.write(DerValue.tag_Sequence, tmp);
revokedCert = seq.toByteArray();
}
outStrm.write(revokedCert);
} catch (IOException e) {
throw new CRLException("Encoding error: " + e.toString());
}
}
/**
* Returns the ASN.1 DER-encoded form of this CRL Entry,
* which corresponds to the inner SEQUENCE.
*
* @exception CRLException if an encoding error occurs.
*/
public byte[] getEncoded() throws CRLException {
if (revokedCert == null)
this.encode(new DerOutputStream());
return revokedCert.clone();
}
@Override
public X500Principal getCertificateIssuer() {
return certIssuer;
}
void setCertificateIssuer(X500Principal crlIssuer, X500Principal certIssuer) {
if (crlIssuer.equals(certIssuer)) {
this.certIssuer = null;
} else {
this.certIssuer = certIssuer;
}
}
/**
* Gets the serial number from this X509CRLEntry,
* i.e. the <em>userCertificate</em>.
*
* @return the serial number.
*/
public BigInteger getSerialNumber() {
return serialNumber.getNumber();
}
/**
* Gets the revocation date from this X509CRLEntry,
* the <em>revocationDate</em>.
*
* @return the revocation date.
*/
public Date getRevocationDate() {
return new Date(revocationDate.getTime());
}
/**
* get Reason Code from CRL entry.
*
* @returns Integer or null, if no such extension
* @throws IOException on error
*/
public Integer getReasonCode() throws IOException {
Object obj = getExtension(PKIXExtensions.ReasonCode_Id);
if (obj == null)
return null;
CRLReasonCodeExtension reasonCode = (CRLReasonCodeExtension)obj;
return (Integer)(reasonCode.get(reasonCode.REASON));
}
/**
* Returns a printable string of this revoked certificate.
*
* @return value of this revoked certificate in a printable form.
*/
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(serialNumber.toString());
sb.append(" On: " + revocationDate.toString());
if (certIssuer != null) {
sb.append("\n Certificate issuer: " + certIssuer);
}
if (extensions != null) {
Collection allEntryExts = extensions.getAllExtensions();
Object[] objs = allEntryExts.toArray();
sb.append("\n CRL Entry Extensions: " + objs.length);
for (int i = 0; i < objs.length; i++) {
sb.append("\n [" + (i+1) + "]: ");
Extension ext = (Extension)objs[i];
try {
if (OIDMap.getClass(ext.getExtensionId()) == null) {
sb.append(ext.toString());
byte[] extValue = ext.getExtensionValue();
if (extValue != null) {
DerOutputStream out = new DerOutputStream();
out.putOctetString(extValue);
extValue = out.toByteArray();
HexDumpEncoder enc = new HexDumpEncoder();
sb.append("Extension unknown: "
+ "DER encoded OCTET string =\n"
+ enc.encodeBuffer(extValue) + "\n");
}
} else
sb.append(ext.toString()); //sub-class exists
} catch (Exception e) {
sb.append(", Error parsing this extension");
}
}
}
sb.append("\n");
return sb.toString();
}
/**
* Return true if a critical extension is found that is
* not supported, otherwise return false.
*/
public boolean hasUnsupportedCriticalExtension() {
if (extensions == null)
return false;
return extensions.hasUnsupportedCriticalExtension();
}
/**
* Gets a Set of the extension(s) marked CRITICAL in this
* X509CRLEntry. In the returned set, each extension is
* represented by its OID string.
*
* @return a set of the extension oid strings in the
* Object that are marked critical.
*/
public Set<String> getCriticalExtensionOIDs() {
if (extensions == null) {
return null;
}
Set<String> extSet = new HashSet<String>();
for (Extension ex : extensions.getAllExtensions()) {
if (ex.isCritical()) {
extSet.add(ex.getExtensionId().toString());
}
}
return extSet;
}
/**
* Gets a Set of the extension(s) marked NON-CRITICAL in this
* X509CRLEntry. In the returned set, each extension is
* represented by its OID string.
*
* @return a set of the extension oid strings in the
* Object that are marked critical.
*/
public Set<String> getNonCriticalExtensionOIDs() {
if (extensions == null) {
return null;
}
Set<String> extSet = new HashSet<String>();
for (Extension ex : extensions.getAllExtensions()) {
if (!ex.isCritical()) {
extSet.add(ex.getExtensionId().toString());
}
}
return extSet;
}
/**
* Gets the DER encoded OCTET string for the extension value
* (<em>extnValue</em>) identified by the passed in oid String.
* The <code>oid</code> string is
* represented by a set of positive whole number separated
* by ".", that means,<br>
* <positive whole number>.<positive whole number>.<positive
* whole number>.<...>
*
* @param oid the Object Identifier value for the extension.
* @return the DER encoded octet string of the extension value.
*/
public byte[] getExtensionValue(String oid) {
if (extensions == null)
return null;
try {
String extAlias = OIDMap.getName(new ObjectIdentifier(oid));
Extension crlExt = null;
if (extAlias == null) { // may be unknown
ObjectIdentifier findOID = new ObjectIdentifier(oid);
Extension ex = null;
ObjectIdentifier inCertOID;
for (Enumeration<Extension> e = extensions.getElements();
e.hasMoreElements();) {
ex = e.nextElement();
inCertOID = ex.getExtensionId();
if (inCertOID.equals(findOID)) {
crlExt = ex;
break;
}
}
} else
crlExt = extensions.get(extAlias);
if (crlExt == null)
return null;
byte[] extData = crlExt.getExtensionValue();
if (extData == null)
return null;
DerOutputStream out = new DerOutputStream();
out.putOctetString(extData);
return out.toByteArray();
} catch (Exception e) {
return null;
}
}
/**
* get an extension
*
* @param oid ObjectIdentifier of extension desired
* @returns Extension of type <extension> or null, if not found
*/
public Extension getExtension(ObjectIdentifier oid) {
if (extensions == null)
return null;
// following returns null if no such OID in map
//XXX consider cloning this
return extensions.get(OIDMap.getName(oid));
}
private void parse(DerValue derVal)
throws CRLException, IOException {
if (derVal.tag != DerValue.tag_Sequence) {
throw new CRLException("Invalid encoded RevokedCertificate, " +
"starting sequence tag missing.");
}
if (derVal.data.available() == 0)
throw new CRLException("No data encoded for RevokedCertificates");
revokedCert = derVal.toByteArray();
// serial number
DerInputStream in = derVal.toDerInputStream();
DerValue val = in.getDerValue();
this.serialNumber = new SerialNumber(val);
// revocationDate
int nextByte = derVal.data.peekByte();
if ((byte)nextByte == DerValue.tag_UtcTime) {
this.revocationDate = derVal.data.getUTCTime();
} else if ((byte)nextByte == DerValue.tag_GeneralizedTime) {
this.revocationDate = derVal.data.getGeneralizedTime();
} else
throw new CRLException("Invalid encoding for revocation date");
if (derVal.data.available() == 0)
return; // no extensions
// crlEntryExtensions
this.extensions = new CRLExtensions(derVal.toDerInputStream());
}
/**
* Utility method to convert an arbitrary instance of X509CRLEntry
* to a X509CRLEntryImpl. Does a cast if possible, otherwise reparses
* the encoding.
*/
public static X509CRLEntryImpl toImpl(X509CRLEntry entry)
throws CRLException {
if (entry instanceof X509CRLEntryImpl) {
return (X509CRLEntryImpl)entry;
} else {
return new X509CRLEntryImpl(entry.getEncoded());
}
}
/**
* Returns the CertificateIssuerExtension
*
* @return the CertificateIssuerExtension, or null if it does not exist
*/
CertificateIssuerExtension getCertificateIssuerExtension() {
return (CertificateIssuerExtension)
getExtension(PKIXExtensions.CertificateIssuer_Id);
}
}