/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Alexander Y. Kleymenov
* @version $Revision$
*/
package org.apache.harmony.security.x509;
import java.io.IOException;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import javax.security.auth.x500.X500Principal;
import org.apache.harmony.security.asn1.ASN1Explicit;
import org.apache.harmony.security.asn1.ASN1Integer;
import org.apache.harmony.security.asn1.ASN1Sequence;
import org.apache.harmony.security.asn1.ASN1SequenceOf;
import org.apache.harmony.security.asn1.ASN1Type;
import org.apache.harmony.security.asn1.BerInputStream;
import org.apache.harmony.security.x501.Name;
/**
* The class encapsulates the ASN.1 DER encoding/decoding work
* with TBSCertList structure which is the part of X.509 CRL
* (as specified in RFC 3280 -
* Internet X.509 Public Key Infrastructure.
* Certificate and Certificate Revocation List (CRL) Profile.
* http://www.ietf.org/rfc/rfc3280.txt):
*
* <pre>
* TBSCertList ::= SEQUENCE {
* version Version OPTIONAL,
* -- if present, MUST be v2
* signature AlgorithmIdentifier,
* issuer Name,
* thisUpdate Time,
* nextUpdate Time OPTIONAL,
* revokedCertificates SEQUENCE OF SEQUENCE {
* userCertificate CertificateSerialNumber,
* revocationDate Time,
* crlEntryExtensions Extensions OPTIONAL
* -- if present, MUST be v2
* } OPTIONAL,
* crlExtensions [0] EXPLICIT Extensions OPTIONAL
* -- if present, MUST be v2
* }
* </pre>
*/
public class TBSCertList {
// the value of version field of the structure
private final int version;
// the value of signature field of the structure
private final AlgorithmIdentifier signature;
// the value of issuer field of the structure
private final Name issuer;
// the value of thisUpdate of the structure
private final Date thisUpdate;
// the value of nextUpdate of the structure
private final Date nextUpdate;
// the value of revokedCertificates of the structure
private final List revokedCertificates;
// the value of crlExtensions field of the structure
private final Extensions crlExtensions;
// the ASN.1 encoded form of TBSCertList
private byte[] encoding;
public static class RevokedCertificate {
private final BigInteger userCertificate;
private final Date revocationDate;
private final Extensions crlEntryExtensions;
private boolean issuerRetrieved;
private X500Principal issuer;
private byte[] encoding;
public RevokedCertificate(BigInteger userCertificate,
Date revocationDate, Extensions crlEntryExtensions) {
this.userCertificate = userCertificate;
this.revocationDate = revocationDate;
this.crlEntryExtensions = crlEntryExtensions;
}
public Extensions getCrlEntryExtensions() {
return crlEntryExtensions;
}
public BigInteger getUserCertificate() {
return userCertificate;
}
public Date getRevocationDate() {
return revocationDate;
}
/**
* Returns the value of Certificate Issuer Extension, if it is
* presented.
*/
public X500Principal getIssuer() {
if (crlEntryExtensions == null) {
return null;
}
if (!issuerRetrieved) {
try {
issuer =
crlEntryExtensions.valueOfCertificateIssuerExtension();
} catch (IOException e) {
e.printStackTrace();
}
issuerRetrieved = true;
}
return issuer;
}
public byte[] getEncoded() {
if (encoding == null) {
encoding = ASN1.encode(this);
}
return encoding;
}
public boolean equals(Object rc) {
if (!(rc instanceof RevokedCertificate)) {
return false;
}
RevokedCertificate rcert = (RevokedCertificate) rc;
return userCertificate.equals(rcert.userCertificate)
&& ((revocationDate.getTime() / 1000)
== (rcert.revocationDate.getTime() / 1000))
&& ((crlEntryExtensions == null)
? rcert.crlEntryExtensions == null
: crlEntryExtensions.equals(rcert.crlEntryExtensions));
}
/**
* Places the string representation of extension value
* into the StringBuffer object.
*/
public void dumpValue(StringBuffer buffer, String prefix) {
buffer.append(prefix).append("Certificate Serial Number: ") //$NON-NLS-1$
.append(userCertificate).append('\n');
buffer.append(prefix).append("Revocation Date: ") //$NON-NLS-1$
.append(revocationDate);
if (crlEntryExtensions != null) {
buffer.append('\n').append(prefix)
.append("CRL Entry Extensions: ["); //$NON-NLS-1$
crlEntryExtensions.dumpValue(buffer, prefix + " "); //$NON-NLS-1$
buffer.append(prefix).append(']');
}
}
public static ASN1Sequence ASN1 = new ASN1Sequence(
new ASN1Type[] {ASN1Integer.getInstance(), Time.ASN1,
Extensions.ASN1}) {
{
setOptional(2);
}
protected Object getDecodedObject(BerInputStream in) {
Object[] values = (Object[]) in.content;
return new RevokedCertificate(
new BigInteger((byte[]) values[0]),
(Date) values[1],
(Extensions) values[2]
);
}
protected void getValues(Object object, Object[] values) {
RevokedCertificate rcert = (RevokedCertificate) object;
values[0] = rcert.userCertificate.toByteArray();
values[1] = rcert.revocationDate;
values[2] = rcert.crlEntryExtensions;
}
};
}
/**
* Constructs the instance of TBSCertList without optional fields.
* Take a note, that regarding to the rfc 3280 (p. 49):
* "When CRLs are issued, the CRLs MUST be version 2 CRLs, include the date
* by which the next CRL will be issued in the nextUpdate field (section
* 5.1.2.5), include the CRL number extension (section 5.2.3), and include
* the authority key identifier extension (section 5.2.1). Conforming
* applications that support CRLs are REQUIRED to process both version 1 and
* version 2 complete CRLs that provide revocation information for all
* certificates issued by one CA. Conforming applications are NOT REQUIRED
* to support processing of delta CRLs, indirect CRLs, or CRLs with a scope
* other than all certificates issued by one CA."
* @param signature: AlgorithmIdentifier
* @param issuer: Name
* @param thisUpdate: Time
*/
public TBSCertList(AlgorithmIdentifier signature,
Name issuer, Date thisUpdate) {
this.version = 1;
this.signature = signature;
this.issuer = issuer;
this.thisUpdate = thisUpdate;
this.nextUpdate = null;
this.revokedCertificates = null;
this.crlExtensions = null;
}
/**
* Constructs the instance of TBSCertList with all optional fields
* @param version: version of the CRL. Should be 1 or 2.
* Note that if the version of CRL is 1, then nextUpdate,
* crlExtensions fields of CRL and crlEntryExtensions field
* of CRL entry must not be presented in CRL.
* FIXME: do check for it.
* @param signature: AlgorithmIdentifier
* @param issuer: Name
* @param thisUpdate: Time
* @param nextUpdate: Time
* @param revokedCertificates: List
* @param crlExtensions: Extensions
*/
public TBSCertList(int version, AlgorithmIdentifier signature,
Name issuer, Date thisUpdate, Date nextUpdate,
List revokedCertificates, Extensions crlExtensions) {
this.version = version;
this.signature = signature;
this.issuer = issuer;
this.thisUpdate = thisUpdate;
this.nextUpdate = nextUpdate;
this.revokedCertificates = revokedCertificates;
this.crlExtensions = crlExtensions;
}
// Constructs the object with associated ASN.1 encoding
private TBSCertList(int version, AlgorithmIdentifier signature,
Name issuer, Date thisUpdate, Date nextUpdate,
List revokedCertificates, Extensions crlExtensions,
byte[] encoding) {
this.version = version;
this.signature = signature;
this.issuer = issuer;
this.thisUpdate = thisUpdate;
this.nextUpdate = nextUpdate;
this.revokedCertificates = revokedCertificates;
this.crlExtensions = crlExtensions;
this.encoding = encoding;
}
/**
* Returns the value of version field of the structure.
* @return version
*/
public int getVersion() {
return version;
}
/**
* Returns the value of signature field of the structure.
* @return signature
*/
public AlgorithmIdentifier getSignature() {
return signature;
}
/**
* Returns the value of issuer field of the structure.
* @return issuer
*/
public Name getIssuer() {
return issuer;
}
/**
* Returns the value of thisUpdate field of the structure.
* @return thisUpdate
*/
public Date getThisUpdate() {
return thisUpdate;
}
/**
* Returns the value of nextUpdate field of the structure.
* @return nextUpdate
*/
public Date getNextUpdate() {
return nextUpdate;
}
/**
* Returns the value of revokedCertificates field of the structure.
* @return revokedCertificates
*/
public List getRevokedCertificates() {
return revokedCertificates;
}
/**
* Returns the value of crlExtensions field of the structure.
* @return extensions
*/
public Extensions getCrlExtensions() {
return crlExtensions;
}
/**
* Returns ASN.1 encoded form of this X.509 TBSCertList value.
* @return a byte array containing ASN.1 encode form.
*/
public byte[] getEncoded() {
if (encoding == null) {
encoding = ASN1.encode(this);
}
return encoding;
}
public boolean equals(Object tbs) {
if (!(tbs instanceof TBSCertList)) {
return false;
}
TBSCertList tbscert = (TBSCertList) tbs;
return (version == tbscert.version)
&& (signature.equals(tbscert.signature))
// FIXME use Name.equals when it will be implemented
&& (Arrays.equals(issuer.getEncoded(), tbscert.issuer.getEncoded()))
&& ((thisUpdate.getTime() / 1000)
== (tbscert.thisUpdate.getTime() / 1000))
&& ((nextUpdate == null)
? tbscert.nextUpdate == null
: ((nextUpdate.getTime() / 1000)
== (tbscert.nextUpdate.getTime() / 1000)))
&& ((((revokedCertificates == null)
|| (tbscert.revokedCertificates == null))
&& (revokedCertificates == tbscert.revokedCertificates))
|| (revokedCertificates.containsAll(tbscert.revokedCertificates)
&& (revokedCertificates.size()
== tbscert.revokedCertificates.size())))
&& ((crlExtensions == null)
? tbscert.crlExtensions == null
: crlExtensions.equals(tbscert.crlExtensions));
}
/**
* Places the string representation of extension value
* into the StringBuffer object.
*/
public void dumpValue(StringBuffer buffer) {
buffer.append("X.509 CRL v").append(version); //$NON-NLS-1$
buffer.append("\nSignature Algorithm: ["); //$NON-NLS-1$
signature.dumpValue(buffer);
buffer.append(']');
buffer.append("\nIssuer: ").append(issuer.getName(X500Principal.RFC2253)); //$NON-NLS-1$
buffer.append("\n\nThis Update: ").append(thisUpdate); //$NON-NLS-1$
buffer.append("\nNext Update: ").append(nextUpdate).append('\n'); //$NON-NLS-1$
if (revokedCertificates != null) {
buffer.append("\nRevoked Certificates: ") //$NON-NLS-1$
.append(revokedCertificates.size()).append(" ["); //$NON-NLS-1$
int number = 1;
for (Iterator it = revokedCertificates.iterator();it.hasNext();) {
buffer.append("\n [").append(number++).append(']'); //$NON-NLS-1$
((RevokedCertificate) it.next()).dumpValue(buffer, " "); //$NON-NLS-1$
buffer.append('\n');
}
buffer.append("]\n"); //$NON-NLS-1$
}
if (crlExtensions != null) {
buffer.append("\nCRL Extensions: ") //$NON-NLS-1$
.append(crlExtensions.size()).append(" ["); //$NON-NLS-1$
crlExtensions.dumpValue(buffer, " "); //$NON-NLS-1$
buffer.append("]\n"); //$NON-NLS-1$
}
}
/**
* X.509 TBSCertList encoder/decoder.
*/
public static final ASN1Sequence ASN1 = new ASN1Sequence(new ASN1Type[] {
ASN1Integer.getInstance(), // version
AlgorithmIdentifier.ASN1, // signature
Name.ASN1, // issuer
Time.ASN1, // thisUpdate
Time.ASN1, // nextUpdate
new ASN1SequenceOf(RevokedCertificate.ASN1), // revokedCertificates
new ASN1Explicit(0, Extensions.ASN1) // crlExtensions
}) {
{
setOptional(0);
setOptional(4);
setOptional(5);
setOptional(6);
}
protected Object getDecodedObject(BerInputStream in)
throws IOException {
Object[] values = (Object[]) in.content;
return new TBSCertList(
(values[0] == null)
? 1
: ASN1Integer.toIntValue(values[0])+1,
(AlgorithmIdentifier) values[1],
(Name) values[2],
(Date) values[3],
(Date) values[4],
(List) values[5],
(Extensions) values[6],
in.getEncoded()
);
}
protected void getValues(Object object, Object[] values) {
TBSCertList tbs = (TBSCertList) object;
values[0] = (tbs.version > 1)
? ASN1Integer.fromIntValue(tbs.version - 1) : null;
values[1] = tbs.signature;
values[2] = tbs.issuer;
values[3] = tbs.thisUpdate;
values[4] = tbs.nextUpdate;
values[5] = tbs.revokedCertificates;
values[6] = tbs.crlExtensions;
}
};
}
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