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/* * Copyright (c) 2000, 2005, 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.security.cert.X509Certificate; /** * Describes one step of a certification path build, consisting of a * <code>Vertex</code> state description, a certificate, a possible throwable, * and a result code. * * @author      Anne Anderson * @since       1.4 * @see sun.security.provider.certpath.Vertex */public class BuildStep {     private static final Debug debug = Debug.getInstance("certpath");    private Vertex          vertex;    private X509Certificate cert;    private Throwable       throwable;    private int             result;     /**     * result code associated with a certificate that may continue a path from     * the current certificate.     */    public static final int POSSIBLE = 1;     /**     * result code associated with a certificate that was tried, but that     * represents an unsuccessful path, so the certificate has been backed out     * to allow backtracking to the next possible path.     */    public static final int BACK = 2;     /**     * result code associated with a certificate that successfully continues the     * current path, but does not yet reach the target.     */    public static final int FOLLOW = 3;     /**     * result code associated with a certificate that represents the end of the     * last possible path, where no path successfully reached the target.     */    public static final int FAIL = 4;     /**     * result code associated with a certificate that represents the end of a     * path that successfully reaches the target.     */    public static final int SUCCEED = 5;     /**     * construct a BuildStep     *     * @param vtx description of the vertex at this step     * @param res result, where result is one of POSSIBLE, BACK,     *            FOLLOW, FAIL, SUCCEED     */    public BuildStep(Vertex vtx, int res) {        vertex = vtx;        if (vertex != null) {            cert = (X509Certificate)vertex.getCertificate();            throwable = vertex.getThrowable();        }        result = res;    }     /**     * return vertex description for this build step     *     * @returns Vertex     */    public Vertex getVertex() {        return vertex;    }     /**     * return the certificate associated with this build step     *     * @returns X509Certificate     */    public X509Certificate getCertificate() {        return cert;    }     /**     * return string form of issuer name from certificate associated with this     * build step     *     * @returns String form of issuer name or null, if no certificate.     */    public String getIssuerName() {        return (cert == null ? null : cert.getIssuerX500Principal().toString());    }     /**     * return string form of issuer name from certificate associated with this     * build step, or a default name if no certificate associated with this     * build step, or if issuer name could not be obtained from the certificate.     *     * @param defaultName name to use as default if unable to return an issuer     * name from the certificate, or if no certificate.     * @returns String form of issuer name or defaultName, if no certificate or     * exception received while trying to extract issuer name from certificate.     */    public String getIssuerName(String defaultName) {        return (cert == null ? defaultName                             : cert.getIssuerX500Principal().toString());    }     /**     * return string form of subject name from certificate associated with this     * build step.     *     * @returns String form of subject name or null, if no certificate.     */    public String getSubjectName() {        return (cert == null ? null : cert.getSubjectX500Principal().toString());    }     /**     * return string form of subject name from certificate associated with this     * build step, or a default name if no certificate associated with this     * build step, or if subject name could not be obtained from the     * certificate.     *     * @param defaultName name to use as default if unable to return a subject     * name from the certificate, or if no certificate.     * @returns String form of subject name or defaultName, if no certificate or     * if an exception was received while attempting to extract the subject name     * from the certificate.     */    public String getSubjectName(String defaultName) {        return (cert == null ? defaultName                             : cert.getSubjectX500Principal().toString());    }     /**     * return the exception associated with this build step.     *     * @returns Throwable     */    public Throwable getThrowable() {        return throwable;    }     /**     * return the result code associated with this build step.  The result codes     * are POSSIBLE, FOLLOW, BACK, FAIL, SUCCEED.     *     * @returns int result code     */    public int getResult() {        return result;    }     /**     * return a string representing the meaning of the result code associated     * with this build step.     *     * @param   res    result code     * @returns String string representing meaning of the result code     */    public String resultToString(int res) {        String resultString = "";        switch (res) {            case BuildStep.POSSIBLE:                resultString = "Certificate to be tried.\n";                break;            case BuildStep.BACK:                resultString = "Certificate backed out since path does not "                    + "satisfy build requirements.\n";                break;            case BuildStep.FOLLOW:                resultString = "Certificate satisfies conditions.\n";                break;            case BuildStep.FAIL:                resultString = "Certificate backed out since path does not "                    + "satisfy conditions.\n";                break;            case BuildStep.SUCCEED:                resultString = "Certificate satisfies conditions.\n";                break;            default:                resultString = "Internal error: Invalid step result value.\n";        }        return resultString;    }     /**     * return a string representation of this build step, showing minimal     * detail.     *     * @returns String     */    public String toString() {        String out = "Internal Error\n";        switch (result) {        case BACK:        case FAIL:            out = resultToString(result);            out = out + vertex.throwableToString();            break;        case FOLLOW:        case SUCCEED:        case POSSIBLE:            out = resultToString(result);            break;        default:            out = "Internal Error: Invalid step result\n";        }        return out;    }     /**     * return a string representation of this build step, showing all detail of     * the vertex state appropriate to the result of this build step, and the     * certificate contents.     *     * @returns String     */    public String verboseToString() {        String out = resultToString(getResult());        switch (result) {        case BACK:        case FAIL:            out = out + vertex.throwableToString();            break;        case FOLLOW:        case SUCCEED:            out = out + vertex.moreToString();            break;        case POSSIBLE:            break;        default:            break;        }        out = out + "Certificate contains:\n" + vertex.certToString();        return out;    }     /**     * return a string representation of this build step, including all possible     * detail of the vertex state, but not including the certificate contents.     *     * @returns String     */    public String fullToString() {        String out = resultToString(getResult());        out = out + vertex.toString();        return out;    }}