| /* |
| * Copyright (c) 2000, 2012, 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 java.io.IOException; |
| import java.security.cert.CertificateException; |
| import java.security.cert.CertPathValidatorException; |
| import java.security.cert.PKIXCertPathChecker; |
| import java.security.cert.X509Certificate; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.ListIterator; |
| import javax.security.auth.x500.X500Principal; |
| |
| import sun.security.util.Debug; |
| import sun.security.x509.SubjectAlternativeNameExtension; |
| import sun.security.x509.GeneralNames; |
| import sun.security.x509.GeneralName; |
| import sun.security.x509.GeneralNameInterface; |
| import sun.security.x509.X500Name; |
| import sun.security.x509.X509CertImpl; |
| |
| /** |
| * A specification of a forward PKIX validation state |
| * which is initialized by each build and updated each time a |
| * certificate is added to the current path. |
| * @since 1.4 |
| * @author Yassir Elley |
| */ |
| class ForwardState implements State { |
| |
| private static final Debug debug = Debug.getInstance("certpath"); |
| |
| /* The issuer DN of the last cert in the path */ |
| X500Principal issuerDN; |
| |
| /* The last cert in the path */ |
| X509CertImpl cert; |
| |
| /* The set of subjectDNs and subjectAltNames of all certs in the path */ |
| HashSet<GeneralNameInterface> subjectNamesTraversed; |
| |
| /* |
| * The number of intermediate CA certs which have been traversed so |
| * far in the path |
| */ |
| int traversedCACerts; |
| |
| /* Flag indicating if state is initial (path is just starting) */ |
| private boolean init = true; |
| |
| |
| /* the untrusted certificates checker */ |
| UntrustedChecker untrustedChecker; |
| |
| /* The list of user-defined checkers that support forward checking */ |
| ArrayList<PKIXCertPathChecker> forwardCheckers; |
| |
| /* Flag indicating if key needing to inherit key parameters has been |
| * encountered. |
| */ |
| boolean keyParamsNeededFlag = false; |
| |
| /** |
| * Returns a boolean flag indicating if the state is initial |
| * (just starting) |
| * |
| * @return boolean flag indicating if the state is initial (just starting) |
| */ |
| @Override |
| public boolean isInitial() { |
| return init; |
| } |
| |
| /** |
| * Return boolean flag indicating whether a public key that needs to inherit |
| * key parameters has been encountered. |
| * |
| * @return boolean true if key needing to inherit parameters has been |
| * encountered; false otherwise. |
| */ |
| @Override |
| public boolean keyParamsNeeded() { |
| return keyParamsNeededFlag; |
| } |
| |
| /** |
| * Display state for debugging purposes |
| */ |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("State ["); |
| sb.append("\n issuerDN of last cert: ").append(issuerDN); |
| sb.append("\n traversedCACerts: ").append(traversedCACerts); |
| sb.append("\n init: ").append(String.valueOf(init)); |
| sb.append("\n keyParamsNeeded: ").append |
| (String.valueOf(keyParamsNeededFlag)); |
| sb.append("\n subjectNamesTraversed: \n").append |
| (subjectNamesTraversed); |
| sb.append("]\n"); |
| return sb.toString(); |
| } |
| |
| /** |
| * Initialize the state. |
| * |
| * @param certPathCheckers the list of user-defined PKIXCertPathCheckers |
| */ |
| public void initState(List<PKIXCertPathChecker> certPathCheckers) |
| throws CertPathValidatorException |
| { |
| subjectNamesTraversed = new HashSet<GeneralNameInterface>(); |
| traversedCACerts = 0; |
| |
| /* |
| * Populate forwardCheckers with every user-defined checker |
| * that supports forward checking and initialize the forwardCheckers |
| */ |
| forwardCheckers = new ArrayList<PKIXCertPathChecker>(); |
| for (PKIXCertPathChecker checker : certPathCheckers) { |
| if (checker.isForwardCheckingSupported()) { |
| checker.init(true); |
| forwardCheckers.add(checker); |
| } |
| } |
| |
| init = true; |
| } |
| |
| /** |
| * Update the state with the next certificate added to the path. |
| * |
| * @param cert the certificate which is used to update the state |
| */ |
| @Override |
| public void updateState(X509Certificate cert) |
| throws CertificateException, IOException, CertPathValidatorException { |
| |
| if (cert == null) |
| return; |
| |
| X509CertImpl icert = X509CertImpl.toImpl(cert); |
| |
| /* see if certificate key has null parameters */ |
| if (PKIX.isDSAPublicKeyWithoutParams(icert.getPublicKey())) { |
| keyParamsNeededFlag = true; |
| } |
| |
| /* update certificate */ |
| this.cert = icert; |
| |
| /* update issuer DN */ |
| issuerDN = cert.getIssuerX500Principal(); |
| |
| if (!X509CertImpl.isSelfIssued(cert)) { |
| |
| /* |
| * update traversedCACerts only if this is a non-self-issued |
| * intermediate CA cert |
| */ |
| if (!init && cert.getBasicConstraints() != -1) { |
| traversedCACerts++; |
| } |
| } |
| |
| /* update subjectNamesTraversed only if this is the EE cert or if |
| this cert is not self-issued */ |
| if (init || !X509CertImpl.isSelfIssued(cert)){ |
| X500Principal subjName = cert.getSubjectX500Principal(); |
| subjectNamesTraversed.add(X500Name.asX500Name(subjName)); |
| |
| try { |
| SubjectAlternativeNameExtension subjAltNameExt |
| = icert.getSubjectAlternativeNameExtension(); |
| if (subjAltNameExt != null) { |
| GeneralNames gNames = subjAltNameExt.get( |
| SubjectAlternativeNameExtension.SUBJECT_NAME); |
| for (GeneralName gName : gNames.names()) { |
| subjectNamesTraversed.add(gName.getName()); |
| } |
| } |
| } catch (IOException e) { |
| if (debug != null) { |
| debug.println("ForwardState.updateState() unexpected " |
| + "exception"); |
| e.printStackTrace(); |
| } |
| throw new CertPathValidatorException(e); |
| } |
| } |
| |
| init = false; |
| } |
| |
| /* |
| * Clone current state. The state is cloned as each cert is |
| * added to the path. This is necessary if backtracking occurs, |
| * and a prior state needs to be restored. |
| * |
| * Note that this is a SMART clone. Not all fields are fully copied, |
| * because some of them will |
| * not have their contents modified by subsequent calls to updateState. |
| */ |
| @Override |
| @SuppressWarnings("unchecked") // Safe casts assuming clone() works correctly |
| public Object clone() { |
| try { |
| ForwardState clonedState = (ForwardState) super.clone(); |
| |
| /* clone checkers, if cloneable */ |
| clonedState.forwardCheckers = (ArrayList<PKIXCertPathChecker>) |
| forwardCheckers.clone(); |
| ListIterator<PKIXCertPathChecker> li = |
| clonedState.forwardCheckers.listIterator(); |
| while (li.hasNext()) { |
| PKIXCertPathChecker checker = li.next(); |
| if (checker instanceof Cloneable) { |
| li.set((PKIXCertPathChecker)checker.clone()); |
| } |
| } |
| |
| /* |
| * Shallow copy traversed names. There is no need to |
| * deep copy contents, since the elements of the Set |
| * are never modified by subsequent calls to updateState(). |
| */ |
| clonedState.subjectNamesTraversed |
| = (HashSet<GeneralNameInterface>)subjectNamesTraversed.clone(); |
| return clonedState; |
| } catch (CloneNotSupportedException e) { |
| throw new InternalError(e.toString(), e); |
| } |
| } |
| } |