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Efficient, scalable, and flexible Java implementation of the Short Messaging Peer to Peer Protocol (SMPP)

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package com.cloudhopper.smpp.ssl;

/*
 * #%L
 * ch-smpp
 * %%
 * Copyright (C) 2009 - 2013 Cloudhopper by Twitter
 * %%
 * Licensed 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.
 * #L%
 */

import java.net.Socket;
import java.security.Principal;
import java.security.PrivateKey;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.X509ExtendedKeyManager;
import javax.net.ssl.X509KeyManager;

/**
 * KeyManager to select a key with desired alias while delegating processing to specified KeyManager.
 * Can be used both with server and client sockets.
 */
public class AliasedX509ExtendedKeyManager extends X509ExtendedKeyManager
{
    private String keyAlias;
    private X509KeyManager keyManager;

    /**
     * Construct KeyManager instance
     * @param keyAlias Alias of the key to be selected
     * @param keyManager Instance of KeyManager to be wrapped
     * @throws Exception
     */
    public AliasedX509ExtendedKeyManager(String keyAlias, X509KeyManager keyManager) throws Exception {
        this.keyAlias = keyAlias;
        this.keyManager = keyManager;
    }

    /**
     * @see javax.net.ssl.X509KeyManager#chooseClientAlias(java.lang.String[], java.security.Principal[], java.net.Socket)
     */
    public String chooseClientAlias(String[] keyType, Principal[] issuers, Socket socket) {
        return keyAlias == null ? keyManager.chooseClientAlias(keyType, issuers, socket) : keyAlias;
    }

    /**
     * @see javax.net.ssl.X509KeyManager#chooseServerAlias(java.lang.String, java.security.Principal[], java.net.Socket)
     */
    public String chooseServerAlias(String keyType, Principal[] issuers, Socket socket) {   
        return keyAlias == null ? keyManager.chooseServerAlias(keyType, issuers, socket) : keyAlias;
    }

    /**
     * @see javax.net.ssl.X509KeyManager#getClientAliases(java.lang.String, java.security.Principal[])
     */
    public String[] getClientAliases(String keyType, Principal[] issuers) {
        return keyManager.getClientAliases(keyType, issuers);
    }

    /**
     * @see javax.net.ssl.X509KeyManager#getServerAliases(java.lang.String, java.security.Principal[])
     */
    public String[] getServerAliases(String keyType, Principal[] issuers) {
        return keyManager.getServerAliases(keyType, issuers);
    }

    /**
     * @see javax.net.ssl.X509KeyManager#getCertificateChain(java.lang.String)
     */
    public X509Certificate[] getCertificateChain(String alias) {
        return keyManager.getCertificateChain(alias);
    }

    /**
     * @see javax.net.ssl.X509KeyManager#getPrivateKey(java.lang.String)
     */
    public PrivateKey getPrivateKey(String alias) {
        return keyManager.getPrivateKey(alias);
    }

    /**
     * @see javax.net.ssl.X509ExtendedKeyManager#chooseEngineServerAlias(java.lang.String, java.security.Principal[], javax.net.ssl.SSLEngine)
     */
    @Override
    public String chooseEngineServerAlias(String keyType, Principal[] issuers, SSLEngine engine) {
        return keyAlias == null ? super.chooseEngineServerAlias(keyType,issuers,engine) : keyAlias;
    }

    /**
     * @see javax.net.ssl.X509ExtendedKeyManager#chooseEngineClientAlias(String[], Principal[], SSLEngine)
     */
    @Override
    public String chooseEngineClientAlias(String keyType[], Principal[] issuers, SSLEngine engine)
    {
        return keyAlias == null ? super.chooseEngineClientAlias(keyType,issuers,engine) : keyAlias;
    }

}




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