Java example source code file (SSLContextImpl.java)
The SSLContextImpl.java Java example source code
/*
* Copyright (c) 1999, 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
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package sun.security.ssl;
import java.net.Socket;
import java.io.*;
import java.util.*;
import java.security.*;
import java.security.cert.*;
import java.security.cert.Certificate;
import javax.net.ssl.*;
import sun.security.provider.certpath.AlgorithmChecker;
import sun.security.action.GetPropertyAction;
public abstract class SSLContextImpl extends SSLContextSpi {
private static final Debug debug = Debug.getInstance("ssl");
private final EphemeralKeyManager ephemeralKeyManager;
private final SSLSessionContextImpl clientCache;
private final SSLSessionContextImpl serverCache;
private boolean isInitialized;
private X509ExtendedKeyManager keyManager;
private X509TrustManager trustManager;
private SecureRandom secureRandom;
// The default algrithm constraints
private AlgorithmConstraints defaultAlgorithmConstraints =
new SSLAlgorithmConstraints(null);
// supported and default protocols
private ProtocolList defaultServerProtocolList;
private ProtocolList defaultClientProtocolList;
private ProtocolList supportedProtocolList;
// supported and default cipher suites
private CipherSuiteList defaultServerCipherSuiteList;
private CipherSuiteList defaultClientCipherSuiteList;
private CipherSuiteList supportedCipherSuiteList;
SSLContextImpl() {
ephemeralKeyManager = new EphemeralKeyManager();
clientCache = new SSLSessionContextImpl();
serverCache = new SSLSessionContextImpl();
}
@Override
protected void engineInit(KeyManager[] km, TrustManager[] tm,
SecureRandom sr) throws KeyManagementException {
isInitialized = false;
keyManager = chooseKeyManager(km);
if (tm == null) {
try {
TrustManagerFactory tmf = TrustManagerFactory.getInstance(
TrustManagerFactory.getDefaultAlgorithm());
tmf.init((KeyStore)null);
tm = tmf.getTrustManagers();
} catch (Exception e) {
// eat
}
}
trustManager = chooseTrustManager(tm);
if (sr == null) {
secureRandom = JsseJce.getSecureRandom();
} else {
if (SunJSSE.isFIPS() &&
(sr.getProvider() != SunJSSE.cryptoProvider)) {
throw new KeyManagementException
("FIPS mode: SecureRandom must be from provider "
+ SunJSSE.cryptoProvider.getName());
}
secureRandom = sr;
}
/*
* The initial delay of seeding the random number generator
* could be long enough to cause the initial handshake on our
* first connection to timeout and fail. Make sure it is
* primed and ready by getting some initial output from it.
*/
if (debug != null && Debug.isOn("sslctx")) {
System.out.println("trigger seeding of SecureRandom");
}
secureRandom.nextInt();
if (debug != null && Debug.isOn("sslctx")) {
System.out.println("done seeding SecureRandom");
}
isInitialized = true;
}
private X509TrustManager chooseTrustManager(TrustManager[] tm)
throws KeyManagementException {
// We only use the first instance of X509TrustManager passed to us.
for (int i = 0; tm != null && i < tm.length; i++) {
if (tm[i] instanceof X509TrustManager) {
if (SunJSSE.isFIPS() &&
!(tm[i] instanceof X509TrustManagerImpl)) {
throw new KeyManagementException
("FIPS mode: only SunJSSE TrustManagers may be used");
}
if (tm[i] instanceof X509ExtendedTrustManager) {
return (X509TrustManager)tm[i];
} else {
return new AbstractTrustManagerWrapper(
(X509TrustManager)tm[i]);
}
}
}
// nothing found, return a dummy X509TrustManager.
return DummyX509TrustManager.INSTANCE;
}
private X509ExtendedKeyManager chooseKeyManager(KeyManager[] kms)
throws KeyManagementException {
for (int i = 0; kms != null && i < kms.length; i++) {
KeyManager km = kms[i];
if (!(km instanceof X509KeyManager)) {
continue;
}
if (SunJSSE.isFIPS()) {
// In FIPS mode, require that one of SunJSSE's own keymanagers
// is used. Otherwise, we cannot be sure that only keys from
// the FIPS token are used.
if ((km instanceof X509KeyManagerImpl)
|| (km instanceof SunX509KeyManagerImpl)) {
return (X509ExtendedKeyManager)km;
} else {
// throw exception, we don't want to silently use the
// dummy keymanager without telling the user.
throw new KeyManagementException
("FIPS mode: only SunJSSE KeyManagers may be used");
}
}
if (km instanceof X509ExtendedKeyManager) {
return (X509ExtendedKeyManager)km;
}
if (debug != null && Debug.isOn("sslctx")) {
System.out.println(
"X509KeyManager passed to " +
"SSLContext.init(): need an " +
"X509ExtendedKeyManager for SSLEngine use");
}
return new AbstractKeyManagerWrapper((X509KeyManager)km);
}
// nothing found, return a dummy X509ExtendedKeyManager
return DummyX509KeyManager.INSTANCE;
}
@Override
protected SSLSocketFactory engineGetSocketFactory() {
if (!isInitialized) {
throw new IllegalStateException(
"SSLContextImpl is not initialized");
}
return new SSLSocketFactoryImpl(this);
}
@Override
protected SSLServerSocketFactory engineGetServerSocketFactory() {
if (!isInitialized) {
throw new IllegalStateException("SSLContext is not initialized");
}
return new SSLServerSocketFactoryImpl(this);
}
@Override
protected SSLEngine engineCreateSSLEngine() {
if (!isInitialized) {
throw new IllegalStateException(
"SSLContextImpl is not initialized");
}
return new SSLEngineImpl(this);
}
@Override
protected SSLEngine engineCreateSSLEngine(String host, int port) {
if (!isInitialized) {
throw new IllegalStateException(
"SSLContextImpl is not initialized");
}
return new SSLEngineImpl(this, host, port);
}
@Override
protected SSLSessionContext engineGetClientSessionContext() {
return clientCache;
}
@Override
protected SSLSessionContext engineGetServerSessionContext() {
return serverCache;
}
SecureRandom getSecureRandom() {
return secureRandom;
}
X509ExtendedKeyManager getX509KeyManager() {
return keyManager;
}
X509TrustManager getX509TrustManager() {
return trustManager;
}
EphemeralKeyManager getEphemeralKeyManager() {
return ephemeralKeyManager;
}
abstract SSLParameters getDefaultServerSSLParams();
abstract SSLParameters getDefaultClientSSLParams();
abstract SSLParameters getSupportedSSLParams();
// Get supported ProtocolList.
ProtocolList getSuportedProtocolList() {
if (supportedProtocolList == null) {
supportedProtocolList =
new ProtocolList(getSupportedSSLParams().getProtocols());
}
return supportedProtocolList;
}
// Get default ProtocolList.
ProtocolList getDefaultProtocolList(boolean roleIsServer) {
if (roleIsServer) {
if (defaultServerProtocolList == null) {
defaultServerProtocolList = new ProtocolList(
getDefaultServerSSLParams().getProtocols());
}
return defaultServerProtocolList;
} else {
if (defaultClientProtocolList == null) {
defaultClientProtocolList = new ProtocolList(
getDefaultClientSSLParams().getProtocols());
}
return defaultClientProtocolList;
}
}
// Get supported CipherSuiteList.
CipherSuiteList getSupportedCipherSuiteList() {
// The maintenance of cipher suites needs to be synchronized.
synchronized (this) {
// Clear cache of available ciphersuites.
clearAvailableCache();
if (supportedCipherSuiteList == null) {
supportedCipherSuiteList = getApplicableCipherSuiteList(
getSuportedProtocolList(), false);
}
return supportedCipherSuiteList;
}
}
// Get default CipherSuiteList.
CipherSuiteList getDefaultCipherSuiteList(boolean roleIsServer) {
// The maintenance of cipher suites needs to be synchronized.
synchronized (this) {
// Clear cache of available ciphersuites.
clearAvailableCache();
if (roleIsServer) {
if (defaultServerCipherSuiteList == null) {
defaultServerCipherSuiteList = getApplicableCipherSuiteList(
getDefaultProtocolList(true), true);
}
return defaultServerCipherSuiteList;
} else {
if (defaultClientCipherSuiteList == null) {
defaultClientCipherSuiteList = getApplicableCipherSuiteList(
getDefaultProtocolList(false), true);
}
return defaultClientCipherSuiteList;
}
}
}
/**
* Return whether a protocol list is the original default enabled
* protocols. See: SSLSocket/SSLEngine.setEnabledProtocols()
*/
boolean isDefaultProtocolList(ProtocolList protocols) {
return (protocols == defaultServerProtocolList) ||
(protocols == defaultClientProtocolList);
}
/*
* Return the list of all available CipherSuites with a priority of
* minPriority or above.
*/
private CipherSuiteList getApplicableCipherSuiteList(
ProtocolList protocols, boolean onlyEnabled) {
int minPriority = CipherSuite.SUPPORTED_SUITES_PRIORITY;
if (onlyEnabled) {
minPriority = CipherSuite.DEFAULT_SUITES_PRIORITY;
}
Collection<CipherSuite> allowedCipherSuites =
CipherSuite.allowedCipherSuites();
TreeSet<CipherSuite> suites = new TreeSet<>();
if (!(protocols.collection().isEmpty()) &&
protocols.min.v != ProtocolVersion.NONE.v) {
for (CipherSuite suite : allowedCipherSuites) {
if (!suite.allowed || suite.priority < minPriority) {
continue;
}
if (suite.isAvailable() &&
suite.obsoleted > protocols.min.v &&
suite.supported <= protocols.max.v) {
if (defaultAlgorithmConstraints.permits(
EnumSet.of(CryptoPrimitive.KEY_AGREEMENT),
suite.name, null)) {
suites.add(suite);
}
} else if (debug != null &&
Debug.isOn("sslctx") && Debug.isOn("verbose")) {
if (suite.obsoleted <= protocols.min.v) {
System.out.println(
"Ignoring obsoleted cipher suite: " + suite);
} else if (suite.supported > protocols.max.v) {
System.out.println(
"Ignoring unsupported cipher suite: " + suite);
} else {
System.out.println(
"Ignoring unavailable cipher suite: " + suite);
}
}
}
}
return new CipherSuiteList(suites);
}
/**
* Clear cache of available ciphersuites. If we support all ciphers
* internally, there is no need to clear the cache and calling this
* method has no effect.
*
* Note that every call to clearAvailableCache() and the maintenance of
* cipher suites need to be synchronized with this instance.
*/
private void clearAvailableCache() {
if (CipherSuite.DYNAMIC_AVAILABILITY) {
supportedCipherSuiteList = null;
defaultServerCipherSuiteList = null;
defaultClientCipherSuiteList = null;
CipherSuite.BulkCipher.clearAvailableCache();
JsseJce.clearEcAvailable();
}
}
/*
* The SSLContext implementation for TLS/SSL algorithm
*
* SSL/TLS protocols specify the forward compatibility and version
* roll-back attack protections, however, a number of SSL/TLS server
* vendors did not implement these aspects properly, and some current
* SSL/TLS servers may refuse to talk to a TLS 1.1 or later client.
*
* Considering above interoperability issues, SunJSSE will not set
* TLS 1.1 and TLS 1.2 as the enabled protocols for client by default.
*
* For SSL/TLS servers, there is no such interoperability issues as
* SSL/TLS clients. In SunJSSE, TLS 1.1 or later version will be the
* enabled protocols for server by default.
*
* We may change the behavior when popular TLS/SSL vendors support TLS
* forward compatibility properly.
*
* SSLv2Hello is no longer necessary. This interoperability option was
* put in place in the late 90's when SSLv3/TLS1.0 were relatively new
* and there were a fair number of SSLv2-only servers deployed. Because
* of the security issues in SSLv2, it is rarely (if ever) used, as
* deployments should now be using SSLv3 and TLSv1.
*
* Considering the issues of SSLv2Hello, we should not enable SSLv2Hello
* by default. Applications still can use it by enabling SSLv2Hello with
* the series of setEnabledProtocols APIs.
*/
/*
* The base abstract SSLContext implementation.
*
* This abstract class encapsulates supported and the default server
* SSL parameters.
*
* @see SSLContext
*/
private abstract static class AbstractSSLContext extends SSLContextImpl {
// parameters
private final static SSLParameters defaultServerSSLParams;
private final static SSLParameters supportedSSLParams;
static {
supportedSSLParams = new SSLParameters();
if (SunJSSE.isFIPS()) {
supportedSSLParams.setProtocols(new String[] {
ProtocolVersion.TLS10.name,
ProtocolVersion.TLS11.name,
ProtocolVersion.TLS12.name
});
defaultServerSSLParams = supportedSSLParams;
} else {
supportedSSLParams.setProtocols(new String[] {
ProtocolVersion.SSL20Hello.name,
ProtocolVersion.SSL30.name,
ProtocolVersion.TLS10.name,
ProtocolVersion.TLS11.name,
ProtocolVersion.TLS12.name
});
defaultServerSSLParams = supportedSSLParams;
}
}
@Override
SSLParameters getDefaultServerSSLParams() {
return defaultServerSSLParams;
}
@Override
SSLParameters getSupportedSSLParams() {
return supportedSSLParams;
}
}
/*
* The SSLContext implementation for SSLv3 and TLS10 algorithm
*
* @see SSLContext
*/
public static final class TLS10Context extends AbstractSSLContext {
private final static SSLParameters defaultClientSSLParams;
static {
defaultClientSSLParams = new SSLParameters();
if (SunJSSE.isFIPS()) {
defaultClientSSLParams.setProtocols(new String[] {
ProtocolVersion.TLS10.name
});
} else {
defaultClientSSLParams.setProtocols(new String[] {
ProtocolVersion.SSL30.name,
ProtocolVersion.TLS10.name
});
}
}
@Override
SSLParameters getDefaultClientSSLParams() {
return defaultClientSSLParams;
}
}
/*
* The SSLContext implementation for TLS11 algorithm
*
* @see SSLContext
*/
public static final class TLS11Context extends AbstractSSLContext {
private final static SSLParameters defaultClientSSLParams;
static {
defaultClientSSLParams = new SSLParameters();
if (SunJSSE.isFIPS()) {
defaultClientSSLParams.setProtocols(new String[] {
ProtocolVersion.TLS10.name,
ProtocolVersion.TLS11.name
});
} else {
defaultClientSSLParams.setProtocols(new String[] {
ProtocolVersion.SSL30.name,
ProtocolVersion.TLS10.name,
ProtocolVersion.TLS11.name
});
}
}
@Override
SSLParameters getDefaultClientSSLParams() {
return defaultClientSSLParams;
}
}
/*
* The SSLContext implementation for TLS12 algorithm
*
* @see SSLContext
*/
public static final class TLS12Context extends AbstractSSLContext {
private final static SSLParameters defaultClientSSLParams;
static {
defaultClientSSLParams = new SSLParameters();
if (SunJSSE.isFIPS()) {
defaultClientSSLParams.setProtocols(new String[] {
ProtocolVersion.TLS10.name,
ProtocolVersion.TLS11.name,
ProtocolVersion.TLS12.name
});
} else {
defaultClientSSLParams.setProtocols(new String[] {
ProtocolVersion.SSL30.name,
ProtocolVersion.TLS10.name,
ProtocolVersion.TLS11.name,
ProtocolVersion.TLS12.name
});
}
}
@Override
SSLParameters getDefaultClientSSLParams() {
return defaultClientSSLParams;
}
}
/*
* The SSLContext implementation for customized TLS protocols
*
* @see SSLContext
*/
private static class CustomizedSSLContext extends AbstractSSLContext {
private final static String PROPERTY_NAME = "jdk.tls.client.protocols";
private final static SSLParameters defaultClientSSLParams;
private static IllegalArgumentException reservedException = null;
// Don't want a java.lang.LinkageError for illegal system property.
//
// Please don't throw exception in this static block. Otherwise,
// java.lang.LinkageError may be thrown during the instantiation of
// the provider service. Instead, let's handle the initialization
// exception in constructor.
static {
String property = AccessController.doPrivileged(
new GetPropertyAction(PROPERTY_NAME));
defaultClientSSLParams = new SSLParameters();
if (property == null || property.length() == 0) {
// the default enabled client TLS protocols
if (SunJSSE.isFIPS()) {
defaultClientSSLParams.setProtocols(new String[] {
ProtocolVersion.TLS10.name,
ProtocolVersion.TLS11.name,
ProtocolVersion.TLS12.name
});
} else {
defaultClientSSLParams.setProtocols(new String[] {
ProtocolVersion.SSL30.name,
ProtocolVersion.TLS10.name,
ProtocolVersion.TLS11.name,
ProtocolVersion.TLS12.name
});
}
} else {
// remove double quote marks from beginning/end of the property
if (property.charAt(0) == '"' &&
property.charAt(property.length() - 1) == '"') {
property = property.substring(1, property.length() - 1);
}
String[] protocols = property.split(",");
for (int i = 0; i < protocols.length; i++) {
protocols[i] = protocols[i].trim();
// Is it a supported protocol name?
try {
ProtocolVersion.valueOf(protocols[i]);
} catch (IllegalArgumentException iae) {
reservedException = new IllegalArgumentException(
PROPERTY_NAME + ": " + protocols[i] +
" is not a standard SSL protocol name", iae);
}
}
if ((reservedException == null) && SunJSSE.isFIPS()) {
for (String protocol : protocols) {
if (ProtocolVersion.SSL20Hello.name.equals(protocol) ||
ProtocolVersion.SSL30.name.equals(protocol)) {
reservedException = new IllegalArgumentException(
PROPERTY_NAME + ": " + protocol +
" is not FIPS compliant");
}
}
}
if (reservedException == null) {
defaultClientSSLParams.setProtocols(protocols);
}
}
}
protected CustomizedSSLContext() {
if (reservedException != null) {
throw reservedException;
}
}
@Override
SSLParameters getDefaultClientSSLParams() {
return defaultClientSSLParams;
}
}
/*
* The SSLContext implementation for default "TLS" algorithm
*
* @see SSLContext
*/
public static final class TLSContext extends CustomizedSSLContext {
// use the default constructor and methods
}
/*
* The SSLContext implementation for default "Default" algorithm
*
* @see SSLContext
*/
public static final class DefaultSSLContext extends CustomizedSSLContext {
private static final String NONE = "NONE";
private static final String P11KEYSTORE = "PKCS11";
private static volatile SSLContextImpl defaultImpl;
private static TrustManager[] defaultTrustManagers;
private static KeyManager[] defaultKeyManagers;
public DefaultSSLContext() throws Exception {
try {
super.engineInit(getDefaultKeyManager(),
getDefaultTrustManager(), null);
} catch (Exception e) {
if (debug != null && Debug.isOn("defaultctx")) {
System.out.println("default context init failed: " + e);
}
throw e;
}
if (defaultImpl == null) {
defaultImpl = this;
}
}
@Override
protected void engineInit(KeyManager[] km, TrustManager[] tm,
SecureRandom sr) throws KeyManagementException {
throw new KeyManagementException
("Default SSLContext is initialized automatically");
}
static synchronized SSLContextImpl getDefaultImpl() throws Exception {
if (defaultImpl == null) {
new DefaultSSLContext();
}
return defaultImpl;
}
private static synchronized TrustManager[] getDefaultTrustManager()
throws Exception {
if (defaultTrustManagers != null) {
return defaultTrustManagers;
}
KeyStore ks =
TrustManagerFactoryImpl.getCacertsKeyStore("defaultctx");
TrustManagerFactory tmf = TrustManagerFactory.getInstance(
TrustManagerFactory.getDefaultAlgorithm());
tmf.init(ks);
defaultTrustManagers = tmf.getTrustManagers();
return defaultTrustManagers;
}
private static synchronized KeyManager[] getDefaultKeyManager()
throws Exception {
if (defaultKeyManagers != null) {
return defaultKeyManagers;
}
final Map<String,String> props = new HashMap<>();
AccessController.doPrivileged(
new PrivilegedExceptionAction<Object>() {
@Override
public Object run() throws Exception {
props.put("keyStore", System.getProperty(
"javax.net.ssl.keyStore", ""));
props.put("keyStoreType", System.getProperty(
"javax.net.ssl.keyStoreType",
KeyStore.getDefaultType()));
props.put("keyStoreProvider", System.getProperty(
"javax.net.ssl.keyStoreProvider", ""));
props.put("keyStorePasswd", System.getProperty(
"javax.net.ssl.keyStorePassword", ""));
return null;
}
});
final String defaultKeyStore = props.get("keyStore");
String defaultKeyStoreType = props.get("keyStoreType");
String defaultKeyStoreProvider = props.get("keyStoreProvider");
if (debug != null && Debug.isOn("defaultctx")) {
System.out.println("keyStore is : " + defaultKeyStore);
System.out.println("keyStore type is : " +
defaultKeyStoreType);
System.out.println("keyStore provider is : " +
defaultKeyStoreProvider);
}
if (P11KEYSTORE.equals(defaultKeyStoreType) &&
!NONE.equals(defaultKeyStore)) {
throw new IllegalArgumentException("if keyStoreType is "
+ P11KEYSTORE + ", then keyStore must be " + NONE);
}
FileInputStream fs = null;
KeyStore ks = null;
char[] passwd = null;
try {
if (defaultKeyStore.length() != 0 &&
!NONE.equals(defaultKeyStore)) {
fs = AccessController.doPrivileged(
new PrivilegedExceptionAction<FileInputStream>() {
@Override
public FileInputStream run() throws Exception {
return new FileInputStream(defaultKeyStore);
}
});
}
String defaultKeyStorePassword = props.get("keyStorePasswd");
if (defaultKeyStorePassword.length() != 0) {
passwd = defaultKeyStorePassword.toCharArray();
}
/**
* Try to initialize key store.
*/
if ((defaultKeyStoreType.length()) != 0) {
if (debug != null && Debug.isOn("defaultctx")) {
System.out.println("init keystore");
}
if (defaultKeyStoreProvider.length() == 0) {
ks = KeyStore.getInstance(defaultKeyStoreType);
} else {
ks = KeyStore.getInstance(defaultKeyStoreType,
defaultKeyStoreProvider);
}
// if defaultKeyStore is NONE, fs will be null
ks.load(fs, passwd);
}
} finally {
if (fs != null) {
fs.close();
fs = null;
}
}
/*
* Try to initialize key manager.
*/
if (debug != null && Debug.isOn("defaultctx")) {
System.out.println("init keymanager of type " +
KeyManagerFactory.getDefaultAlgorithm());
}
KeyManagerFactory kmf = KeyManagerFactory.getInstance(
KeyManagerFactory.getDefaultAlgorithm());
if (P11KEYSTORE.equals(defaultKeyStoreType)) {
kmf.init(ks, null); // do not pass key passwd if using token
} else {
kmf.init(ks, passwd);
}
defaultKeyManagers = kmf.getKeyManagers();
return defaultKeyManagers;
}
}
}
final class AbstractTrustManagerWrapper extends X509ExtendedTrustManager
implements X509TrustManager {
// the delegated trust manager
private final X509TrustManager tm;
AbstractTrustManagerWrapper(X509TrustManager tm) {
this.tm = tm;
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
tm.checkClientTrusted(chain, authType);
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
tm.checkServerTrusted(chain, authType);
}
@Override
public X509Certificate[] getAcceptedIssuers() {
return tm.getAcceptedIssuers();
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType,
Socket socket) throws CertificateException {
tm.checkClientTrusted(chain, authType);
checkAdditionalTrust(chain, authType, socket, true);
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType,
Socket socket) throws CertificateException {
tm.checkServerTrusted(chain, authType);
checkAdditionalTrust(chain, authType, socket, false);
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType,
SSLEngine engine) throws CertificateException {
tm.checkClientTrusted(chain, authType);
checkAdditionalTrust(chain, authType, engine, true);
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType,
SSLEngine engine) throws CertificateException {
tm.checkServerTrusted(chain, authType);
checkAdditionalTrust(chain, authType, engine, false);
}
private void checkAdditionalTrust(X509Certificate[] chain, String authType,
Socket socket, boolean isClient) throws CertificateException {
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();
X509TrustManagerImpl.checkIdentity(
hostname, chain[0], identityAlg);
}
// try the best to check the algorithm constraints
ProtocolVersion protocolVersion =
ProtocolVersion.valueOf(session.getProtocol());
AlgorithmConstraints constraints = null;
if (protocolVersion.v >= ProtocolVersion.TLS12.v) {
if (session instanceof ExtendedSSLSession) {
ExtendedSSLSession extSession =
(ExtendedSSLSession)session;
String[] peerSupportedSignAlgs =
extSession.getLocalSupportedSignatureAlgorithms();
constraints = new SSLAlgorithmConstraints(
sslSocket, peerSupportedSignAlgs, true);
} else {
constraints =
new SSLAlgorithmConstraints(sslSocket, true);
}
} else {
constraints = new SSLAlgorithmConstraints(sslSocket, true);
}
checkAlgorithmConstraints(chain, constraints);
}
}
private void checkAdditionalTrust(X509Certificate[] chain, String authType,
SSLEngine engine, boolean isClient) throws CertificateException {
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();
X509TrustManagerImpl.checkIdentity(
hostname, chain[0], identityAlg);
}
// try the best to check the algorithm constraints
ProtocolVersion protocolVersion =
ProtocolVersion.valueOf(session.getProtocol());
AlgorithmConstraints constraints = null;
if (protocolVersion.v >= ProtocolVersion.TLS12.v) {
if (session instanceof ExtendedSSLSession) {
ExtendedSSLSession extSession =
(ExtendedSSLSession)session;
String[] peerSupportedSignAlgs =
extSession.getLocalSupportedSignatureAlgorithms();
constraints = new SSLAlgorithmConstraints(
engine, peerSupportedSignAlgs, true);
} else {
constraints =
new SSLAlgorithmConstraints(engine, true);
}
} else {
constraints = new SSLAlgorithmConstraints(engine, true);
}
checkAlgorithmConstraints(chain, constraints);
}
}
private void checkAlgorithmConstraints(X509Certificate[] chain,
AlgorithmConstraints constraints) throws CertificateException {
try {
// Does the certificate chain end with a trusted certificate?
int checkedLength = chain.length - 1;
Collection<X509Certificate> trustedCerts = new HashSet<>();
X509Certificate[] certs = tm.getAcceptedIssuers();
if ((certs != null) && (certs.length > 0)){
Collections.addAll(trustedCerts, certs);
}
if (trustedCerts.contains(chain[checkedLength])) {
checkedLength--;
}
// A forward checker, need to check from trust to target
if (checkedLength >= 0) {
AlgorithmChecker checker = new AlgorithmChecker(constraints);
checker.init(false);
for (int i = checkedLength; i >= 0; i--) {
Certificate cert = chain[i];
// We don't care about the unresolved critical extensions.
checker.check(cert, Collections.<String>emptySet());
}
}
} catch (CertPathValidatorException cpve) {
throw new CertificateException(
"Certificates does not conform to algorithm constraints");
}
}
}
// Dummy X509TrustManager implementation, rejects all peer certificates.
// Used if the application did not specify a proper X509TrustManager.
final class DummyX509TrustManager extends X509ExtendedTrustManager
implements X509TrustManager {
static final X509TrustManager INSTANCE = new DummyX509TrustManager();
private DummyX509TrustManager() {
// empty
}
/*
* Given the partial or complete certificate chain
* provided by the peer, build a certificate path
* to a trusted root and return if it can be
* validated and is trusted for client SSL authentication.
* If not, it throws an exception.
*/
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
throw new CertificateException(
"No X509TrustManager implementation avaiable");
}
/*
* Given the partial or complete certificate chain
* provided by the peer, build a certificate path
* to a trusted root and return if it can be
* validated and is trusted for server SSL authentication.
* If not, it throws an exception.
*/
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
throw new CertificateException(
"No X509TrustManager implementation available");
}
/*
* Return an array of issuer certificates which are trusted
* for authenticating peers.
*/
@Override
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[0];
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType,
Socket socket) throws CertificateException {
throw new CertificateException(
"No X509TrustManager implementation available");
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType,
Socket socket) throws CertificateException {
throw new CertificateException(
"No X509TrustManager implementation available");
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType,
SSLEngine engine) throws CertificateException {
throw new CertificateException(
"No X509TrustManager implementation available");
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType,
SSLEngine engine) throws CertificateException {
throw new CertificateException(
"No X509TrustManager implementation available");
}
}
/*
* A wrapper class to turn a X509KeyManager into an X509ExtendedKeyManager
*/
final class AbstractKeyManagerWrapper extends X509ExtendedKeyManager {
private final X509KeyManager km;
AbstractKeyManagerWrapper(X509KeyManager km) {
this.km = km;
}
@Override
public String[] getClientAliases(String keyType, Principal[] issuers) {
return km.getClientAliases(keyType, issuers);
}
@Override
public String chooseClientAlias(String[] keyType, Principal[] issuers,
Socket socket) {
return km.chooseClientAlias(keyType, issuers, socket);
}
@Override
public String[] getServerAliases(String keyType, Principal[] issuers) {
return km.getServerAliases(keyType, issuers);
}
@Override
public String chooseServerAlias(String keyType, Principal[] issuers,
Socket socket) {
return km.chooseServerAlias(keyType, issuers, socket);
}
@Override
public X509Certificate[] getCertificateChain(String alias) {
return km.getCertificateChain(alias);
}
@Override
public PrivateKey getPrivateKey(String alias) {
return km.getPrivateKey(alias);
}
// Inherit chooseEngineClientAlias() and chooseEngineServerAlias() from
// X509ExtendedKeymanager. It defines them to return null;
}
// Dummy X509KeyManager implementation, never returns any certificates/keys.
// Used if the application did not specify a proper X509TrustManager.
final class DummyX509KeyManager extends X509ExtendedKeyManager {
static final X509ExtendedKeyManager INSTANCE = new DummyX509KeyManager();
private DummyX509KeyManager() {
// empty
}
/*
* Get the matching aliases for authenticating the client side of a secure
* socket given the public key type and the list of
* certificate issuer authorities recognized by the peer (if any).
*/
@Override
public String[] getClientAliases(String keyType, Principal[] issuers) {
return null;
}
/*
* Choose an alias to authenticate the client side of a secure
* socket given the public key type and the list of
* certificate issuer authorities recognized by the peer (if any).
*/
@Override
public String chooseClientAlias(String[] keyTypes, Principal[] issuers,
Socket socket) {
return null;
}
/*
* Choose an alias to authenticate the client side of an
* engine given the public key type and the list of
* certificate issuer authorities recognized by the peer (if any).
*/
@Override
public String chooseEngineClientAlias(
String[] keyTypes, Principal[] issuers, SSLEngine engine) {
return null;
}
/*
* Get the matching aliases for authenticating the server side of a secure
* socket given the public key type and the list of
* certificate issuer authorities recognized by the peer (if any).
*/
@Override
public String[] getServerAliases(String keyType, Principal[] issuers) {
return null;
}
/*
* Choose an alias to authenticate the server side of a secure
* socket given the public key type and the list of
* certificate issuer authorities recognized by the peer (if any).
*/
@Override
public String chooseServerAlias(String keyType, Principal[] issuers,
Socket socket) {
return null;
}
/*
* Choose an alias to authenticate the server side of an engine
* given the public key type and the list of
* certificate issuer authorities recognized by the peer (if any).
*/
@Override
public String chooseEngineServerAlias(
String keyType, Principal[] issuers, SSLEngine engine) {
return null;
}
/**
* Returns the certificate chain associated with the given alias.
*
* @param alias the alias name
*
* @return the certificate chain (ordered with the user's certificate first
* and the root certificate authority last)
*/
@Override
public X509Certificate[] getCertificateChain(String alias) {
return null;
}
/*
* Returns the key associated with the given alias, using the given
* password to recover it.
*
* @param alias the alias name
*
* @return the requested key
*/
@Override
public PrivateKey getPrivateKey(String alias) {
return null;
}
}
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