/* * Copyright (c) 1997, 2010, 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.ssl; import java.net.Socket;import javax.net.ssl.SSLSession; import java.util.*;import java.security.*;import java.security.cert.*; import javax.net.ssl.*; import sun.security.validator.*; import sun.security.util.HostnameChecker; /** * This class implements the SunJSSE X.509 trust manager using the internal * validator API in J2SE core. The logic in this class is minimal.<p> * <p> * This class supports both the Simple validation algorithm from previous * JSSE versions and PKIX validation. Currently, it is not possible for the * application to specify PKIX parameters other than trust anchors. This will * be fixed in a future release using new APIs. When that happens, it may also * make sense to separate the Simple and PKIX trust managers into separate * classes. * * @author Andreas Sterbenz */final class X509TrustManagerImpl extends X509ExtendedTrustManager        implements X509TrustManager {     private final String validatorType;     /**     * The Set of trusted X509Certificates.     */    private final Collection<X509Certificate> trustedCerts;     private final PKIXBuilderParameters pkixParams;     // note that we need separate validator for client and server due to    // the different extension checks. They are initialized lazily on demand.    private volatile Validator clientValidator, serverValidator;     private static final Debug debug = Debug.getInstance("ssl");     X509TrustManagerImpl(String validatorType, KeyStore ks)            throws KeyStoreException {        this.validatorType = validatorType;        this.pkixParams = null;        if (ks == null) {            trustedCerts = Collections.<X509Certificate>emptySet();        } else {            trustedCerts = KeyStores.getTrustedCerts(ks);        }        showTrustedCerts();    }     X509TrustManagerImpl(String validatorType, PKIXBuilderParameters params) {        this.validatorType = validatorType;        this.pkixParams = params;        // create server validator eagerly so that we can conveniently        // get the trusted certificates        // clients need it anyway eventually, and servers will not mind        // the little extra footprint        Validator v = getValidator(Validator.VAR_TLS_SERVER);        trustedCerts = v.getTrustedCertificates();        serverValidator = v;        showTrustedCerts();    }     @Override    public void checkClientTrusted(X509Certificate chain[], String authType)            throws CertificateException {        checkTrusted(chain, authType, (Socket)null, true);    }     @Override    public void checkServerTrusted(X509Certificate chain[], String authType)            throws CertificateException {        checkTrusted(chain, authType, (Socket)null, false);    }     @Override    public X509Certificate[] getAcceptedIssuers() {        X509Certificate[] certsArray = new X509Certificate[trustedCerts.size()];        trustedCerts.toArray(certsArray);        return certsArray;    }     @Override    public void checkClientTrusted(X509Certificate[] chain, String authType,                Socket socket) throws CertificateException {        checkTrusted(chain, authType, socket, true);    }     @Override    public void checkServerTrusted(X509Certificate[] chain, String authType,            Socket socket) throws CertificateException {        checkTrusted(chain, authType, socket, false);    }     @Override    public void checkClientTrusted(X509Certificate[] chain, String authType,            SSLEngine engine) throws CertificateException {        checkTrusted(chain, authType, engine, true);    }     @Override    public void checkServerTrusted(X509Certificate[] chain, String authType,            SSLEngine engine) throws CertificateException {        checkTrusted(chain, authType, engine, false);    }     private Validator checkTrustedInit(X509Certificate[] chain,                                        String authType, boolean isClient) {        if (chain == null || chain.length == 0) {            throw new IllegalArgumentException(                "null or zero-length certificate chain");        }         if (authType == null || authType.length() == 0) {            throw new IllegalArgumentException(                "null or zero-length authentication type");        }         Validator v = null;        if (isClient) {            v = clientValidator;            if (v == null) {                synchronized (this) {                    v = clientValidator;                    if (v == null) {                        v = getValidator(Validator.VAR_TLS_CLIENT);                        clientValidator = v;                    }                }            }        } else {            // assume double checked locking with a volatile flag works            // (guaranteed under the new Tiger memory model)            v = serverValidator;            if (v == null) {                synchronized (this) {                    v = serverValidator;                    if (v == null) {                        v = getValidator(Validator.VAR_TLS_SERVER);                        serverValidator = v;                    }                }            }        }         return v;    }      private void checkTrusted(X509Certificate[] chain, String authType,                Socket socket, boolean isClient) throws CertificateException {        Validator v = checkTrustedInit(chain, authType, isClient);         AlgorithmConstraints constraints = null;        if ((socket != null) && socket.isConnected() &&                                        (socket instanceof SSLSocket)) {             SSLSocket sslSocket = (SSLSocket)socket;            SSLSession session = sslSocket.getHandshakeSession();            if (session == null) {                throw new CertificateException("No handshake session");            }             // check endpoint identity            String identityAlg = sslSocket.getSSLParameters().                                        getEndpointIdentificationAlgorithm();            if (identityAlg != null && identityAlg.length() != 0) {                String hostname = session.getPeerHost();                checkIdentity(hostname, chain[0], identityAlg);            }             // create the algorithm constraints            ProtocolVersion protocolVersion =                ProtocolVersion.valueOf(session.getProtocol());            if (protocolVersion.v >= ProtocolVersion.TLS12.v) {                if (session instanceof ExtendedSSLSession) {                    ExtendedSSLSession extSession =                                    (ExtendedSSLSession)session;                    String[] localSupportedSignAlgs =                            extSession.getLocalSupportedSignatureAlgorithms();                     constraints = new SSLAlgorithmConstraints(                                    sslSocket, localSupportedSignAlgs, false);                } else {                    constraints =                            new SSLAlgorithmConstraints(sslSocket, false);                }            } else {                constraints = new SSLAlgorithmConstraints(sslSocket, false);            }        }         X509Certificate[] trustedChain = null;        if (isClient) {            trustedChain = validate(v, chain, constraints, null);        } else {            trustedChain = validate(v, chain, constraints, authType);        }        if (debug != null && Debug.isOn("trustmanager")) {            System.out.println("Found trusted certificate:");            System.out.println(trustedChain[trustedChain.length - 1]);        }    }     private void checkTrusted(X509Certificate[] chain, String authType,            SSLEngine engine, boolean isClient) throws CertificateException {        Validator v = checkTrustedInit(chain, authType, isClient);         AlgorithmConstraints constraints = null;        if (engine != null) {            SSLSession session = engine.getHandshakeSession();            if (session == null) {                throw new CertificateException("No handshake session");            }             // check endpoint identity            String identityAlg = engine.getSSLParameters().                                        getEndpointIdentificationAlgorithm();            if (identityAlg != null && identityAlg.length() != 0) {                String hostname = session.getPeerHost();                checkIdentity(hostname, chain[0], identityAlg);            }             // create the algorithm constraints            ProtocolVersion protocolVersion =                ProtocolVersion.valueOf(session.getProtocol());            if (protocolVersion.v >= ProtocolVersion.TLS12.v) {                if (session instanceof ExtendedSSLSession) {                    ExtendedSSLSession extSession =                                    (ExtendedSSLSession)session;                    String[] localSupportedSignAlgs =                            extSession.getLocalSupportedSignatureAlgorithms();                     constraints = new SSLAlgorithmConstraints(                                    engine, localSupportedSignAlgs, false);                } else {                    constraints =                            new SSLAlgorithmConstraints(engine, false);                }            } else {                constraints = new SSLAlgorithmConstraints(engine, false);            }        }         X509Certificate[] trustedChain = null;        if (isClient) {            trustedChain = validate(v, chain, constraints, null);        } else {            trustedChain = validate(v, chain, constraints, authType);        }        if (debug != null && Debug.isOn("trustmanager")) {            System.out.println("Found trusted certificate:");            System.out.println(trustedChain[trustedChain.length - 1]);        }    }     private void showTrustedCerts() {        if (debug != null && Debug.isOn("trustmanager")) {            for (X509Certificate cert : trustedCerts) {                System.out.println("adding as trusted cert:");                System.out.println("  Subject: "                                        + cert.getSubjectX500Principal());                System.out.println("  Issuer:  "                                        + cert.getIssuerX500Principal());                System.out.println("  Algorithm: "                                        + cert.getPublicKey().getAlgorithm()                                        + "; Serial number: 0x"                                        + cert.getSerialNumber().toString(16));                System.out.println("  Valid from "                                        + cert.getNotBefore() + " until "                                        + cert.getNotAfter());                System.out.println();            }        }    }     private Validator getValidator(String variant) {        Validator v;        if (pkixParams == null) {            v = Validator.getInstance(validatorType, variant, trustedCerts);        } else {            v = Validator.getInstance(validatorType, variant, pkixParams);        }        return v;    }     private static X509Certificate[] validate(Validator v,            X509Certificate[] chain, AlgorithmConstraints constraints,            String authType) throws CertificateException {        Object o = JsseJce.beginFipsProvider();        try {            return v.validate(chain, null, constraints, authType);        } finally {            JsseJce.endFipsProvider(o);        }    }     /*     * Identify the peer by its certificate and hostname.     *     * Lifted from sun.net.www.protocol.https.HttpsClient.     */    static void checkIdentity(String hostname, X509Certificate cert,            String algorithm) throws CertificateException {        if (algorithm != null && algorithm.length() != 0) {            // if IPv6 strip off the "[]"            if ((hostname != null) && hostname.startsWith("[") &&                    hostname.endsWith("]")) {                hostname = hostname.substring(1, hostname.length() - 1);            }             if (algorithm.equalsIgnoreCase("HTTPS")) {                HostnameChecker.getInstance(HostnameChecker.TYPE_TLS).match(                        hostname, cert);            } else if (algorithm.equalsIgnoreCase("LDAP") ||                    algorithm.equalsIgnoreCase("LDAPS")) {                HostnameChecker.getInstance(HostnameChecker.TYPE_LDAP).match(                        hostname, cert);            } else {                throw new CertificateException(                        "Unknown identification algorithm: " + algorithm);            }        }    }}