author | sherman |
Tue, 30 Aug 2011 11:53:11 -0700 | |
changeset 10419 | 12c063b39232 |
parent 10336 | 0bb1999251f8 |
child 12860 | 9ffbd4e43413 |
child 11902 | a94ba35d9c4a |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.security.provider.certpath; |
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import java.io.IOException; |
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import java.security.PublicKey; |
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import java.security.cert.CertificateException; |
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import java.security.cert.CertPathValidatorException; |
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import java.security.cert.PKIXCertPathChecker; |
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import java.security.cert.X509Certificate; |
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import java.security.interfaces.DSAPublicKey; |
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import java.util.ArrayList; |
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import java.util.HashSet; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.ListIterator; |
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import javax.security.auth.x500.X500Principal; |
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import sun.security.util.Debug; |
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import sun.security.x509.SubjectAlternativeNameExtension; |
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import sun.security.x509.GeneralNames; |
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import sun.security.x509.GeneralName; |
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import sun.security.x509.GeneralNameInterface; |
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import sun.security.x509.X500Name; |
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import sun.security.x509.X509CertImpl; |
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/** |
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* A specification of a forward PKIX validation state |
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* which is initialized by each build and updated each time a |
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* certificate is added to the current path. |
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* @since 1.4 |
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* @author Yassir Elley |
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*/ |
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class ForwardState implements State { |
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private static final Debug debug = Debug.getInstance("certpath"); |
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/* The issuer DN of the last cert in the path */ |
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X500Principal issuerDN; |
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/* The last cert in the path */ |
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X509CertImpl cert; |
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/* The set of subjectDNs and subjectAltNames of all certs in the path */ |
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HashSet<GeneralNameInterface> subjectNamesTraversed; |
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/* |
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* The number of intermediate CA certs which have been traversed so |
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* far in the path |
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*/ |
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int traversedCACerts; |
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/* Flag indicating if state is initial (path is just starting) */ |
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private boolean init = true; |
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/* the checker used for revocation status */ |
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public CrlRevocationChecker crlChecker; |
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/* The list of user-defined checkers that support forward checking */ |
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ArrayList<PKIXCertPathChecker> forwardCheckers; |
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/* Flag indicating if key needing to inherit key parameters has been |
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* encountered. |
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*/ |
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boolean keyParamsNeededFlag = false; |
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/** |
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* Returns a boolean flag indicating if the state is initial |
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* (just starting) |
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* |
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* @return boolean flag indicating if the state is initial (just starting) |
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*/ |
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public boolean isInitial() { |
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return init; |
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} |
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/** |
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* Return boolean flag indicating whether a public key that needs to inherit |
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* key parameters has been encountered. |
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* |
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* @return boolean true if key needing to inherit parameters has been |
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* encountered; false otherwise. |
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*/ |
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public boolean keyParamsNeeded() { |
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return keyParamsNeededFlag; |
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} |
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/** |
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* Display state for debugging purposes |
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*/ |
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public String toString() { |
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StringBuffer sb = new StringBuffer(); |
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try { |
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sb.append("State ["); |
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sb.append("\n issuerDN of last cert: " + issuerDN); |
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sb.append("\n traversedCACerts: " + traversedCACerts); |
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sb.append("\n init: " + String.valueOf(init)); |
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sb.append("\n keyParamsNeeded: " |
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+ String.valueOf(keyParamsNeededFlag)); |
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sb.append("\n subjectNamesTraversed: \n" + subjectNamesTraversed); |
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sb.append("]\n"); |
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} catch (Exception e) { |
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if (debug != null) { |
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debug.println("ForwardState.toString() unexpected exception"); |
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e.printStackTrace(); |
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} |
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} |
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return sb.toString(); |
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} |
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/** |
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* Initialize the state. |
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* |
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* @param certPathCheckers the list of user-defined PKIXCertPathCheckers |
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*/ |
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public void initState(List<PKIXCertPathChecker> certPathCheckers) |
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throws CertPathValidatorException |
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{ |
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subjectNamesTraversed = new HashSet<GeneralNameInterface>(); |
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traversedCACerts = 0; |
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/* |
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* Populate forwardCheckers with every user-defined checker |
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* that supports forward checking and initialize the forwardCheckers |
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*/ |
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forwardCheckers = new ArrayList<PKIXCertPathChecker>(); |
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if (certPathCheckers != null) { |
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for (PKIXCertPathChecker checker : certPathCheckers) { |
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if (checker.isForwardCheckingSupported()) { |
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checker.init(true); |
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forwardCheckers.add(checker); |
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} |
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} |
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} |
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init = true; |
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} |
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/** |
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* Update the state with the next certificate added to the path. |
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* |
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* @param cert the certificate which is used to update the state |
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*/ |
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public void updateState(X509Certificate cert) |
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throws CertificateException, IOException, CertPathValidatorException { |
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if (cert == null) |
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return; |
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X509CertImpl icert = X509CertImpl.toImpl(cert); |
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/* see if certificate key has null parameters */ |
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PublicKey newKey = icert.getPublicKey(); |
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if (newKey instanceof DSAPublicKey && |
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((DSAPublicKey)newKey).getParams() == null) { |
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keyParamsNeededFlag = true; |
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} |
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/* update certificate */ |
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this.cert = icert; |
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/* update issuer DN */ |
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issuerDN = cert.getIssuerX500Principal(); |
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if (!X509CertImpl.isSelfIssued(cert)) { |
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/* |
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* update traversedCACerts only if this is a non-self-issued |
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* intermediate CA cert |
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*/ |
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if (!init && cert.getBasicConstraints() != -1) { |
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traversedCACerts++; |
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} |
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} |
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/* update subjectNamesTraversed only if this is the EE cert or if |
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this cert is not self-issued */ |
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if (init || !X509CertImpl.isSelfIssued(cert)){ |
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X500Principal subjName = cert.getSubjectX500Principal(); |
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subjectNamesTraversed.add(X500Name.asX500Name(subjName)); |
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try { |
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SubjectAlternativeNameExtension subjAltNameExt |
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= icert.getSubjectAlternativeNameExtension(); |
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if (subjAltNameExt != null) { |
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diff
changeset
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GeneralNames gNames = subjAltNameExt.get( |
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SubjectAlternativeNameExtension.SUBJECT_NAME); |
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for (Iterator<GeneralName> t = gNames.iterator(); |
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t.hasNext(); ) { |
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GeneralNameInterface gName = t.next().getName(); |
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subjectNamesTraversed.add(gName); |
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} |
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} |
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} catch (Exception e) { |
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if (debug != null) { |
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debug.println("ForwardState.updateState() unexpected " |
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+ "exception"); |
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e.printStackTrace(); |
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} |
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throw new CertPathValidatorException(e); |
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} |
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} |
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init = false; |
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} |
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/* |
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* Clone current state. The state is cloned as each cert is |
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* added to the path. This is necessary if backtracking occurs, |
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* and a prior state needs to be restored. |
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* |
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* Note that this is a SMART clone. Not all fields are fully copied, |
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* because some of them will |
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* not have their contents modified by subsequent calls to updateState. |
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*/ |
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changeset
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@SuppressWarnings("unchecked") // Safe casts assuming clone() works correctly |
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public Object clone() { |
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try { |
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ForwardState clonedState = (ForwardState) super.clone(); |
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/* clone checkers, if cloneable */ |
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clonedState.forwardCheckers = (ArrayList<PKIXCertPathChecker>) |
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forwardCheckers.clone(); |
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ListIterator<PKIXCertPathChecker> li = |
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clonedState.forwardCheckers.listIterator(); |
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while (li.hasNext()) { |
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PKIXCertPathChecker checker = li.next(); |
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if (checker instanceof Cloneable) { |
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li.set((PKIXCertPathChecker)checker.clone()); |
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} |
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} |
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/* |
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* Shallow copy traversed names. There is no need to |
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* deep copy contents, since the elements of the Set |
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* are never modified by subsequent calls to updateState(). |
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*/ |
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clonedState.subjectNamesTraversed |
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= (HashSet<GeneralNameInterface>)subjectNamesTraversed.clone(); |
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return clonedState; |
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} catch (CloneNotSupportedException e) { |
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throw new InternalError(e.toString(), e); |
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} |
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} |
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} |