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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* 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
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*
* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
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*
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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);
}
}
}
}