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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
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package org.apache.http.ssl;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.Principal;
import java.security.PrivateKey;
import java.security.Provider;
import java.security.SecureRandom;
import java.security.Security;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;

import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509ExtendedKeyManager;
import javax.net.ssl.X509TrustManager;

import org.apache.http.util.Args;

/**
 * Builder for {@link javax.net.ssl.SSLContext} instances.
 * 

* Please note: the default Oracle JSSE implementation of {@link SSLContext#init(KeyManager[], TrustManager[], SecureRandom)} * accepts multiple key and trust managers, however only only first matching type is ever used. * See for example: * * SSLContext.html#init * *

* TODO Specify which Oracle JSSE versions the above has been verified. *

* @since 4.4 */ public class SSLContextBuilder { static final String TLS = "TLS"; private String protocol; private final Set keyManagers; private String keyManagerFactoryAlgorithm = KeyManagerFactory.getDefaultAlgorithm(); private String keyStoreType = KeyStore.getDefaultType(); private final Set trustManagers; private String trustManagerFactoryAlgorithm = TrustManagerFactory.getDefaultAlgorithm(); private SecureRandom secureRandom; private Provider provider; public static SSLContextBuilder create() { return new SSLContextBuilder(); } public SSLContextBuilder() { super(); this.keyManagers = new LinkedHashSet(); this.trustManagers = new LinkedHashSet(); } /** * Sets the SSLContext protocol algorithm name. * * @param protocol * the SSLContext protocol algorithm name of the requested protocol. See * the SSLContext section in the Java * Cryptography Architecture Standard Algorithm Name * Documentation for more information. * @return this builder * @see Java * Cryptography Architecture Standard Algorithm Name Documentation * @deprecated Use {@link #setProtocol(String)}. */ @Deprecated public SSLContextBuilder useProtocol(final String protocol) { this.protocol = protocol; return this; } /** * Sets the SSLContext protocol algorithm name. * * @param protocol * the SSLContext protocol algorithm name of the requested protocol. See * the SSLContext section in the Java * Cryptography Architecture Standard Algorithm Name * Documentation for more information. * @return this builder * @see Java * Cryptography Architecture Standard Algorithm Name Documentation * @since 4.4.7 */ public SSLContextBuilder setProtocol(final String protocol) { this.protocol = protocol; return this; } public SSLContextBuilder setSecureRandom(final SecureRandom secureRandom) { this.secureRandom = secureRandom; return this; } public SSLContextBuilder setProvider(final Provider provider) { this.provider = provider; return this; } public SSLContextBuilder setProvider(final String name) { this.provider = Security.getProvider(name); return this; } /** * Sets the key store type. * * @param keyStoreType * the SSLkey store type. See * the KeyStore section in the Java * Cryptography Architecture Standard Algorithm Name * Documentation for more information. * @return this builder * @see Java * Cryptography Architecture Standard Algorithm Name Documentation * @since 4.4.7 */ public SSLContextBuilder setKeyStoreType(final String keyStoreType) { this.keyStoreType = keyStoreType; return this; } /** * Sets the key manager factory algorithm name. * * @param keyManagerFactoryAlgorithm * the key manager factory algorithm name of the requested protocol. See * the KeyManagerFactory section in the Java * Cryptography Architecture Standard Algorithm Name * Documentation for more information. * @return this builder * @see Java * Cryptography Architecture Standard Algorithm Name Documentation * @since 4.4.7 */ public SSLContextBuilder setKeyManagerFactoryAlgorithm(final String keyManagerFactoryAlgorithm) { this.keyManagerFactoryAlgorithm = keyManagerFactoryAlgorithm; return this; } /** * Sets the trust manager factory algorithm name. * * @param trustManagerFactoryAlgorithm * the trust manager algorithm name of the requested protocol. See * the TrustManagerFactory section in the Java * Cryptography Architecture Standard Algorithm Name * Documentation for more information. * @return this builder * @see Java * Cryptography Architecture Standard Algorithm Name Documentation * @since 4.4.7 */ public SSLContextBuilder setTrustManagerFactoryAlgorithm(final String trustManagerFactoryAlgorithm) { this.trustManagerFactoryAlgorithm = trustManagerFactoryAlgorithm; return this; } public SSLContextBuilder loadTrustMaterial( final KeyStore truststore, final TrustStrategy trustStrategy) throws NoSuchAlgorithmException, KeyStoreException { final TrustManagerFactory tmfactory = TrustManagerFactory .getInstance(trustManagerFactoryAlgorithm == null ? TrustManagerFactory.getDefaultAlgorithm() : trustManagerFactoryAlgorithm); tmfactory.init(truststore); final TrustManager[] tms = tmfactory.getTrustManagers(); if (tms != null) { if (trustStrategy != null) { for (int i = 0; i < tms.length; i++) { final TrustManager tm = tms[i]; if (tm instanceof X509TrustManager) { tms[i] = new TrustManagerDelegate((X509TrustManager) tm, trustStrategy); } } } Collections.addAll(this.trustManagers, tms); } return this; } public SSLContextBuilder loadTrustMaterial( final TrustStrategy trustStrategy) throws NoSuchAlgorithmException, KeyStoreException { return loadTrustMaterial(null, trustStrategy); } public SSLContextBuilder loadTrustMaterial( final File file, final char[] storePassword, final TrustStrategy trustStrategy) throws NoSuchAlgorithmException, KeyStoreException, CertificateException, IOException { Args.notNull(file, "Truststore file"); final KeyStore trustStore = KeyStore.getInstance(keyStoreType); final FileInputStream inStream = new FileInputStream(file); try { trustStore.load(inStream, storePassword); } finally { inStream.close(); } return loadTrustMaterial(trustStore, trustStrategy); } public SSLContextBuilder loadTrustMaterial( final File file, final char[] storePassword) throws NoSuchAlgorithmException, KeyStoreException, CertificateException, IOException { return loadTrustMaterial(file, storePassword, null); } public SSLContextBuilder loadTrustMaterial( final File file) throws NoSuchAlgorithmException, KeyStoreException, CertificateException, IOException { return loadTrustMaterial(file, null); } public SSLContextBuilder loadTrustMaterial( final URL url, final char[] storePassword, final TrustStrategy trustStrategy) throws NoSuchAlgorithmException, KeyStoreException, CertificateException, IOException { Args.notNull(url, "Truststore URL"); final KeyStore trustStore = KeyStore.getInstance(keyStoreType); final InputStream inStream = url.openStream(); try { trustStore.load(inStream, storePassword); } finally { inStream.close(); } return loadTrustMaterial(trustStore, trustStrategy); } public SSLContextBuilder loadTrustMaterial( final URL url, final char[] storePassword) throws NoSuchAlgorithmException, KeyStoreException, CertificateException, IOException { return loadTrustMaterial(url, storePassword, null); } public SSLContextBuilder loadKeyMaterial( final KeyStore keystore, final char[] keyPassword, final PrivateKeyStrategy aliasStrategy) throws NoSuchAlgorithmException, KeyStoreException, UnrecoverableKeyException { final KeyManagerFactory kmfactory = KeyManagerFactory .getInstance(keyManagerFactoryAlgorithm == null ? KeyManagerFactory.getDefaultAlgorithm() : keyManagerFactoryAlgorithm); kmfactory.init(keystore, keyPassword); final KeyManager[] kms = kmfactory.getKeyManagers(); if (kms != null) { if (aliasStrategy != null) { for (int i = 0; i < kms.length; i++) { final KeyManager km = kms[i]; if (km instanceof X509ExtendedKeyManager) { kms[i] = new KeyManagerDelegate((X509ExtendedKeyManager) km, aliasStrategy); } } } Collections.addAll(keyManagers, kms); } return this; } public SSLContextBuilder loadKeyMaterial( final KeyStore keystore, final char[] keyPassword) throws NoSuchAlgorithmException, KeyStoreException, UnrecoverableKeyException { return loadKeyMaterial(keystore, keyPassword, null); } public SSLContextBuilder loadKeyMaterial( final File file, final char[] storePassword, final char[] keyPassword, final PrivateKeyStrategy aliasStrategy) throws NoSuchAlgorithmException, KeyStoreException, UnrecoverableKeyException, CertificateException, IOException { Args.notNull(file, "Keystore file"); final KeyStore identityStore = KeyStore.getInstance(keyStoreType); final FileInputStream inStream = new FileInputStream(file); try { identityStore.load(inStream, storePassword); } finally { inStream.close(); } return loadKeyMaterial(identityStore, keyPassword, aliasStrategy); } public SSLContextBuilder loadKeyMaterial( final File file, final char[] storePassword, final char[] keyPassword) throws NoSuchAlgorithmException, KeyStoreException, UnrecoverableKeyException, CertificateException, IOException { return loadKeyMaterial(file, storePassword, keyPassword, null); } public SSLContextBuilder loadKeyMaterial( final URL url, final char[] storePassword, final char[] keyPassword, final PrivateKeyStrategy aliasStrategy) throws NoSuchAlgorithmException, KeyStoreException, UnrecoverableKeyException, CertificateException, IOException { Args.notNull(url, "Keystore URL"); final KeyStore identityStore = KeyStore.getInstance(keyStoreType); final InputStream inStream = url.openStream(); try { identityStore.load(inStream, storePassword); } finally { inStream.close(); } return loadKeyMaterial(identityStore, keyPassword, aliasStrategy); } public SSLContextBuilder loadKeyMaterial( final URL url, final char[] storePassword, final char[] keyPassword) throws NoSuchAlgorithmException, KeyStoreException, UnrecoverableKeyException, CertificateException, IOException { return loadKeyMaterial(url, storePassword, keyPassword, null); } protected void initSSLContext( final SSLContext sslContext, final Collection keyManagers, final Collection trustManagers, final SecureRandom secureRandom) throws KeyManagementException { sslContext.init( !keyManagers.isEmpty() ? keyManagers.toArray(new KeyManager[keyManagers.size()]) : null, !trustManagers.isEmpty() ? trustManagers.toArray(new TrustManager[trustManagers.size()]) : null, secureRandom); } public SSLContext build() throws NoSuchAlgorithmException, KeyManagementException { final SSLContext sslContext; final String protocolStr = this.protocol != null ? this.protocol : TLS; if (this.provider != null) { sslContext = SSLContext.getInstance(protocolStr, this.provider); } else { sslContext = SSLContext.getInstance(protocolStr); } initSSLContext(sslContext, keyManagers, trustManagers, secureRandom); return sslContext; } static class TrustManagerDelegate implements X509TrustManager { private final X509TrustManager trustManager; private final TrustStrategy trustStrategy; TrustManagerDelegate(final X509TrustManager trustManager, final TrustStrategy trustStrategy) { super(); this.trustManager = trustManager; this.trustStrategy = trustStrategy; } @Override public void checkClientTrusted( final X509Certificate[] chain, final String authType) throws CertificateException { this.trustManager.checkClientTrusted(chain, authType); } @Override public void checkServerTrusted( final X509Certificate[] chain, final String authType) throws CertificateException { if (!this.trustStrategy.isTrusted(chain, authType)) { this.trustManager.checkServerTrusted(chain, authType); } } @Override public X509Certificate[] getAcceptedIssuers() { return this.trustManager.getAcceptedIssuers(); } } static class KeyManagerDelegate extends X509ExtendedKeyManager { private final X509ExtendedKeyManager keyManager; private final PrivateKeyStrategy aliasStrategy; KeyManagerDelegate(final X509ExtendedKeyManager keyManager, final PrivateKeyStrategy aliasStrategy) { super(); this.keyManager = keyManager; this.aliasStrategy = aliasStrategy; } @Override public String[] getClientAliases( final String keyType, final Principal[] issuers) { return this.keyManager.getClientAliases(keyType, issuers); } public Map getClientAliasMap( final String[] keyTypes, final Principal[] issuers) { final Map validAliases = new HashMap(); for (final String keyType: keyTypes) { final String[] aliases = this.keyManager.getClientAliases(keyType, issuers); if (aliases != null) { for (final String alias: aliases) { validAliases.put(alias, new PrivateKeyDetails(keyType, this.keyManager.getCertificateChain(alias))); } } } return validAliases; } public Map getServerAliasMap( final String keyType, final Principal[] issuers) { final Map validAliases = new HashMap(); final String[] aliases = this.keyManager.getServerAliases(keyType, issuers); if (aliases != null) { for (final String alias: aliases) { validAliases.put(alias, new PrivateKeyDetails(keyType, this.keyManager.getCertificateChain(alias))); } } return validAliases; } @Override public String chooseClientAlias( final String[] keyTypes, final Principal[] issuers, final Socket socket) { final Map validAliases = getClientAliasMap(keyTypes, issuers); return this.aliasStrategy.chooseAlias(validAliases, socket); } @Override public String[] getServerAliases( final String keyType, final Principal[] issuers) { return this.keyManager.getServerAliases(keyType, issuers); } @Override public String chooseServerAlias( final String keyType, final Principal[] issuers, final Socket socket) { final Map validAliases = getServerAliasMap(keyType, issuers); return this.aliasStrategy.chooseAlias(validAliases, socket); } @Override public X509Certificate[] getCertificateChain(final String alias) { return this.keyManager.getCertificateChain(alias); } @Override public PrivateKey getPrivateKey(final String alias) { return this.keyManager.getPrivateKey(alias); } @Override public String chooseEngineClientAlias( final String[] keyTypes, final Principal[] issuers, final SSLEngine sslEngine) { final Map validAliases = getClientAliasMap(keyTypes, issuers); return this.aliasStrategy.chooseAlias(validAliases, null); } @Override public String chooseEngineServerAlias( final String keyType, final Principal[] issuers, final SSLEngine sslEngine) { final Map validAliases = getServerAliasMap(keyType, issuers); return this.aliasStrategy.chooseAlias(validAliases, null); } } @Override public String toString() { return "[provider=" + provider + ", protocol=" + protocol + ", keyStoreType=" + keyStoreType + ", keyManagerFactoryAlgorithm=" + keyManagerFactoryAlgorithm + ", keyManagers=" + keyManagers + ", trustManagerFactoryAlgorithm=" + trustManagerFactoryAlgorithm + ", trustManagers=" + trustManagers + ", secureRandom=" + secureRandom + "]"; } }




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