/*
* Copyright (c) 2000, 2015, Oracle and/or its affiliates. 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.security.provider.certpath;
import sun.security.util.Debug;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.StringJoiner;
import java.security.cert.CertPath;
import java.security.cert.CertPathValidatorException;
import java.security.cert.PKIXCertPathChecker;
import java.security.cert.PKIXReason;
import java.security.cert.X509Certificate;
This class is initialized with a list of PKIXCertPathCheckers
and is used to verify the certificates in a CertPath by
feeding each certificate to each PKIXCertPathChecker.
Author: Yassir Elley Since: 1.4
/**
* This class is initialized with a list of <code>PKIXCertPathChecker</code>s
* and is used to verify the certificates in a <code>CertPath</code> by
* feeding each certificate to each <code>PKIXCertPathChecker</code>.
*
* @since 1.4
* @author Yassir Elley
*/
class PKIXMasterCertPathValidator {
private static final Debug debug = Debug.getInstance("certpath");
Validates a certification path consisting exclusively of
X509Certificates using the specified
PKIXCertPathCheckers. It is assumed that the
PKIXCertPathCheckers
have been initialized with any input parameters they may need.
Params: - cpOriginal – the original X509 CertPath passed in by the user
- reversedCertList – the reversed X509 CertPath (as a List)
- certPathCheckers – the PKIXCertPathCheckers
Throws: - CertPathValidatorException – if cert path does not validate
/**
* Validates a certification path consisting exclusively of
* <code>X509Certificate</code>s using the specified
* <code>PKIXCertPathChecker</code>s. It is assumed that the
* <code>PKIXCertPathChecker</code>s
* have been initialized with any input parameters they may need.
*
* @param cpOriginal the original X509 CertPath passed in by the user
* @param reversedCertList the reversed X509 CertPath (as a List)
* @param certPathCheckers the PKIXCertPathCheckers
* @throws CertPathValidatorException if cert path does not validate
*/
static void validate(CertPath cpOriginal,
List<X509Certificate> reversedCertList,
List<PKIXCertPathChecker> certPathCheckers)
throws CertPathValidatorException
{
// we actually process reversedCertList, but we keep cpOriginal because
// we need to return the original certPath when we throw an exception.
// we will also need to modify the index appropriately when we
// throw an exception.
int cpSize = reversedCertList.size();
if (debug != null) {
debug.println("--------------------------------------------------"
+ "------------");
debug.println("Executing PKIX certification path validation "
+ "algorithm.");
}
for (int i = 0; i < cpSize; i++) {
/* The basic loop algorithm is that we get the
* current certificate, we verify the current certificate using
* information from the previous certificate and from the state,
* and we modify the state for the next loop by setting the
* current certificate of this loop to be the previous certificate
* of the next loop. The state is initialized during first loop.
*/
X509Certificate currCert = reversedCertList.get(i);
if (debug != null) {
debug.println("Checking cert" + (i+1) + " - Subject: " +
currCert.getSubjectX500Principal());
}
Set<String> unresCritExts = currCert.getCriticalExtensionOIDs();
if (unresCritExts == null) {
unresCritExts = Collections.<String>emptySet();
}
if (debug != null && !unresCritExts.isEmpty()) {
StringJoiner joiner = new StringJoiner(", ", "{", "}");
for (String oid : unresCritExts) {
joiner.add(oid);
}
debug.println("Set of critical extensions: " +
joiner.toString());
}
for (int j = 0; j < certPathCheckers.size(); j++) {
PKIXCertPathChecker currChecker = certPathCheckers.get(j);
if (debug != null) {
debug.println("-Using checker" + (j + 1) + " ... [" +
currChecker.getClass().getName() + "]");
}
if (i == 0)
currChecker.init(false);
try {
currChecker.check(currCert, unresCritExts);
if (debug != null) {
debug.println("-checker" + (j + 1) +
" validation succeeded");
}
} catch (CertPathValidatorException cpve) {
throw new CertPathValidatorException(cpve.getMessage(),
(cpve.getCause() != null) ? cpve.getCause() : cpve,
cpOriginal, cpSize - (i + 1), cpve.getReason());
}
}
if (!unresCritExts.isEmpty()) {
throw new CertPathValidatorException("unrecognized " +
"critical extension(s)", null, cpOriginal, cpSize-(i+1),
PKIXReason.UNRECOGNIZED_CRIT_EXT);
}
if (debug != null)
debug.println("\ncert" + (i+1) + " validation succeeded.\n");
}
if (debug != null) {
debug.println("Cert path validation succeeded. (PKIX validation "
+ "algorithm)");
debug.println("-------------------------------------------------"
+ "-------------");
}
}
}