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// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// This program 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 for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.cmscore.authentication;
import java.util.*;
import java.math.BigInteger;
import netscape.security.x509.*;
/**
* class storing verified certificates.
*
* @version $Revision$, $Date$
*/
public class VerifiedCerts {
/* the value type of the dn component */
private int mFirst = 0;
private int mLast = 0;
private int mNext = 0;
private VerifiedCert[] mVCerts = null;
private long mInterval = 0;
private long mUnknownStateInterval = 0;
/**
* Constructs verified certiificates list
*/
public VerifiedCerts(int size, long interval) {
mVCerts = new VerifiedCert[size];
mInterval = interval;
mUnknownStateInterval = interval;
}
public VerifiedCerts(int size, long interval, long unknownStateInterval) {
mVCerts = new VerifiedCert[size];
mInterval = interval;
mUnknownStateInterval = unknownStateInterval;
}
public void update(X509CertImpl cert, int status) {
if (cert != null) {
byte[] certEncoded = null;
try {
certEncoded = cert.getEncoded();
} catch (Exception e) {
}
if ((certEncoded != null ||
(status == VerifiedCert.CHECKED && mUnknownStateInterval > 0))
&& mInterval > 0) {
update(cert.getSerialNumber(), certEncoded, status);
}
}
}
public synchronized void update(BigInteger serialNumber, byte[] certEncoded, int status) {
if ((status == VerifiedCert.NOT_REVOKED ||
status == VerifiedCert.REVOKED ||
(status == VerifiedCert.CHECKED && mUnknownStateInterval > 0))
&& mInterval > 0) {
if (mLast == mNext && mFirst == mNext) { // empty
mVCerts[mNext] = new VerifiedCert(serialNumber, certEncoded, status);
mNext = next(mNext);
} else if (mFirst == mNext) { // full
mFirst = next(mFirst);
mVCerts[mNext] = new VerifiedCert(serialNumber, certEncoded, status);
mLast = mNext;
mNext = next(mNext);
} else {
mVCerts[mNext] = new VerifiedCert(serialNumber, certEncoded, status);
mLast = mNext;
mNext = next(mNext);
}
}
}
public int check(X509CertImpl cert) {
int status = VerifiedCert.UNKNOWN;
if (mLast != mNext && mInterval > 0) { // if not empty and
if (cert != null) {
byte[] certEncoded = null;
try {
certEncoded = cert.getEncoded();
} catch (Exception e) {
}
if (certEncoded != null) {
status = check(cert.getSerialNumber(), certEncoded);
}
}
}
return status;
}
public synchronized int check(BigInteger serialNumber, byte[] certEncoded) {
int status = VerifiedCert.UNKNOWN;
int i = mLast;
if (mVCerts != null && mLast != mNext && mInterval > 0) { // if not empty and
while (status == VerifiedCert.UNKNOWN) {
if (mVCerts[i] == null)
return status;
status = mVCerts[i].check(serialNumber, certEncoded,
mInterval, mUnknownStateInterval);
if (status == VerifiedCert.EXPIRED) {
if (mFirst == mLast)
mNext = mLast;
else
mFirst = next(i);
break;
} else if (mFirst == i) {
break;
} else {
i = previous(i);
}
}
if (status == VerifiedCert.UNKNOWN)
status = mVCerts[i].check(serialNumber, certEncoded,
mInterval, mUnknownStateInterval);
}
return status;
}
private int next(int i) {
i++;
if (i >= mVCerts.length)
i = 0;
return i;
}
private int previous(int i) {
if (i <= 0)
i = mVCerts.length;
i--;
return i;
}
}
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