--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.base/share/classes/java/security/cert/PKIXBuilderParameters.java Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,199 @@
+/*
+ * Copyright (c) 2000, 2013, 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 java.security.cert;
+
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidParameterException;
+import java.util.Set;
+
+/**
+ * Parameters used as input for the PKIX {@code CertPathBuilder}
+ * algorithm.
+ * <p>
+ * A PKIX {@code CertPathBuilder} uses these parameters to {@link
+ * CertPathBuilder#build build} a {@code CertPath} which has been
+ * validated according to the PKIX certification path validation algorithm.
+ *
+ * <p>To instantiate a {@code PKIXBuilderParameters} object, an
+ * application must specify one or more <i>most-trusted CAs</i> as defined by
+ * the PKIX certification path validation algorithm. The most-trusted CA
+ * can be specified using one of two constructors. An application
+ * can call {@link #PKIXBuilderParameters(Set, CertSelector)
+ * PKIXBuilderParameters(Set, CertSelector)}, specifying a
+ * {@code Set} of {@code TrustAnchor} objects, each of which
+ * identifies a most-trusted CA. Alternatively, an application can call
+ * {@link #PKIXBuilderParameters(KeyStore, CertSelector)
+ * PKIXBuilderParameters(KeyStore, CertSelector)}, specifying a
+ * {@code KeyStore} instance containing trusted certificate entries, each
+ * of which will be considered as a most-trusted CA.
+ *
+ * <p>In addition, an application must specify constraints on the target
+ * certificate that the {@code CertPathBuilder} will attempt
+ * to build a path to. The constraints are specified as a
+ * {@code CertSelector} object. These constraints should provide the
+ * {@code CertPathBuilder} with enough search criteria to find the target
+ * certificate. Minimal criteria for an {@code X509Certificate} usually
+ * include the subject name and/or one or more subject alternative names.
+ * If enough criteria is not specified, the {@code CertPathBuilder}
+ * may throw a {@code CertPathBuilderException}.
+ * <p>
+ * <b>Concurrent Access</b>
+ * <p>
+ * Unless otherwise specified, the methods defined in this class are not
+ * thread-safe. Multiple threads that need to access a single
+ * object concurrently should synchronize amongst themselves and
+ * provide the necessary locking. Multiple threads each manipulating
+ * separate objects need not synchronize.
+ *
+ * @see CertPathBuilder
+ *
+ * @since 1.4
+ * @author Sean Mullan
+ */
+public class PKIXBuilderParameters extends PKIXParameters {
+
+ private int maxPathLength = 5;
+
+ /**
+ * Creates an instance of {@code PKIXBuilderParameters} with
+ * the specified {@code Set} of most-trusted CAs.
+ * Each element of the set is a {@link TrustAnchor TrustAnchor}.
+ *
+ * <p>Note that the {@code Set} is copied to protect against
+ * subsequent modifications.
+ *
+ * @param trustAnchors a {@code Set} of {@code TrustAnchor}s
+ * @param targetConstraints a {@code CertSelector} specifying the
+ * constraints on the target certificate
+ * @throws InvalidAlgorithmParameterException if {@code trustAnchors}
+ * is empty {@code (trustAnchors.isEmpty() == true)}
+ * @throws NullPointerException if {@code trustAnchors} is
+ * {@code null}
+ * @throws ClassCastException if any of the elements of
+ * {@code trustAnchors} are not of type
+ * {@code java.security.cert.TrustAnchor}
+ */
+ public PKIXBuilderParameters(Set<TrustAnchor> trustAnchors, CertSelector
+ targetConstraints) throws InvalidAlgorithmParameterException
+ {
+ super(trustAnchors);
+ setTargetCertConstraints(targetConstraints);
+ }
+
+ /**
+ * Creates an instance of {@code PKIXBuilderParameters} that
+ * populates the set of most-trusted CAs from the trusted
+ * certificate entries contained in the specified {@code KeyStore}.
+ * Only keystore entries that contain trusted {@code X509Certificate}s
+ * are considered; all other certificate types are ignored.
+ *
+ * @param keystore a {@code KeyStore} from which the set of
+ * most-trusted CAs will be populated
+ * @param targetConstraints a {@code CertSelector} specifying the
+ * constraints on the target certificate
+ * @throws KeyStoreException if {@code keystore} has not been
+ * initialized
+ * @throws InvalidAlgorithmParameterException if {@code keystore} does
+ * not contain at least one trusted certificate entry
+ * @throws NullPointerException if {@code keystore} is
+ * {@code null}
+ */
+ public PKIXBuilderParameters(KeyStore keystore,
+ CertSelector targetConstraints)
+ throws KeyStoreException, InvalidAlgorithmParameterException
+ {
+ super(keystore);
+ setTargetCertConstraints(targetConstraints);
+ }
+
+ /**
+ * Sets the value of the maximum number of non-self-issued intermediate
+ * certificates that may exist in a certification path. A certificate
+ * is self-issued if the DNs that appear in the subject and issuer
+ * fields are identical and are not empty. Note that the last certificate
+ * in a certification path is not an intermediate certificate, and is not
+ * included in this limit. Usually the last certificate is an end entity
+ * certificate, but it can be a CA certificate. A PKIX
+ * {@code CertPathBuilder} instance must not build
+ * paths longer than the length specified.
+ *
+ * <p> A value of 0 implies that the path can only contain
+ * a single certificate. A value of -1 implies that the
+ * path length is unconstrained (i.e. there is no maximum).
+ * The default maximum path length, if not specified, is 5.
+ * Setting a value less than -1 will cause an exception to be thrown.
+ *
+ * <p> If any of the CA certificates contain the
+ * {@code BasicConstraintsExtension}, the value of the
+ * {@code pathLenConstraint} field of the extension overrides
+ * the maximum path length parameter whenever the result is a
+ * certification path of smaller length.
+ *
+ * @param maxPathLength the maximum number of non-self-issued intermediate
+ * certificates that may exist in a certification path
+ * @throws InvalidParameterException if {@code maxPathLength} is set
+ * to a value less than -1
+ *
+ * @see #getMaxPathLength
+ */
+ public void setMaxPathLength(int maxPathLength) {
+ if (maxPathLength < -1) {
+ throw new InvalidParameterException("the maximum path "
+ + "length parameter can not be less than -1");
+ }
+ this.maxPathLength = maxPathLength;
+ }
+
+ /**
+ * Returns the value of the maximum number of intermediate non-self-issued
+ * certificates that may exist in a certification path. See
+ * the {@link #setMaxPathLength} method for more details.
+ *
+ * @return the maximum number of non-self-issued intermediate certificates
+ * that may exist in a certification path, or -1 if there is no limit
+ *
+ * @see #setMaxPathLength
+ */
+ public int getMaxPathLength() {
+ return maxPathLength;
+ }
+
+ /**
+ * Returns a formatted string describing the parameters.
+ *
+ * @return a formatted string describing the parameters
+ */
+ public String toString() {
+ StringBuilder sb = new StringBuilder();
+ sb.append("[\n");
+ sb.append(super.toString());
+ sb.append(" Maximum Path Length: " + maxPathLength + "\n");
+ sb.append("]\n");
+ return sb.toString();
+ }
+}