JSSEKeyManager.java

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package org.glassfish.grizzly.config.ssl;

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;

/**
 * X509KeyManager which allows selection of a specific keypair and certificate chain (identified by their keystore alias
 * name) to be used by the server to authenticate itself to SSL clients.
 *
 * @author Jan Luehe
 */
public final class JSSEKeyManager extends X509ExtendedKeyManager {
    private final X509KeyManager delegate;
    private final String serverKeyAlias;

    /**
     * Constructor.
     *
     * @param mgr The X509KeyManager used as a delegate
     * @param serverKeyAlias The alias name of the server's key pair and supporting certificate chain
     */
    public JSSEKeyManager(X509KeyManager mgr, String serverKeyAlias) {
        delegate = mgr;
        this.serverKeyAlias = serverKeyAlias;
    }

    /**
     * Choose an alias to authenticate the client side of an SSLEngine connection given the public key type and the list
     * of certificate issuer authorities recognized by the peer (if any).
     *
     * @return The alias name for the desired key, or null if there are no matches
     */
    public String chooseEngineClientAlias(String[] keyType, Principal[] issuers, SSLEngine engine) {
        return delegate.chooseClientAlias(keyType, issuers, null);
    }

    /**
     * Choose an alias to authenticate the server side of an SSLEngine connection given the public key type and the list
     * of certificate issuer authorities recognized by the peer (if any).
     *
     * @return Alias name for the desired key
     */
    public String chooseEngineServerAlias(String keyType, Principal[] issuers, SSLEngine engine) {
        return serverKeyAlias;
    }

    /**
     * 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).
     *
     * @param keyType The key algorithm type name(s), ordered with the most-preferred key type first
     * @param issuers The list of acceptable CA issuer subject names, or null if it does not matter which issuers are
     * used
     * @param socket The socket to be used for this connection. This parameter can be null, in which case this method
     * will return the most generic alias to use
     *
     * @return The alias name for the desired key, or null if there are no matches
     */
    public String chooseClientAlias(String[] keyType, Principal[] issuers, Socket socket) {
        return delegate.chooseClientAlias(keyType, issuers, socket);
    }

    /**
     * Returns this key manager's server key alias that was provided in the constructor.
     *
     * @param keyType The key algorithm type name (ignored)
     * @param issuers The list of acceptable CA issuer subject names, or null if it does not matter which issuers are
     * used (ignored)
     * @param socket The socket to be used for this connection. This parameter can be null, in which case this method
     * will return the most generic alias to use (ignored)
     *
     * @return Alias name for the desired key
     */
    public String chooseServerAlias(String keyType, Principal[] issuers,
        Socket socket) {
        return serverKeyAlias;
    }

    /**
     * Returns the certificate chain associated with the given alias.
     *
     * @param alias The alias name
     *
     * @return Certificate chain (ordered with the user's certificate first and the root certificate authority last), or
     *         null if the alias can't be found
     */
    public X509Certificate[] getCertificateChain(String alias) {
        return delegate.getCertificateChain(alias);
    }

    /**
     * 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).
     *
     * @param keyType The key algorithm type name
     * @param issuers The list of acceptable CA issuer subject names, or null if it does not matter which issuers are
     * used
     *
     * @return Array of the matching alias names, or null if there were no matches
     */
    public String[] getClientAliases(String keyType, Principal[] issuers) {
        return delegate.getClientAliases(keyType, issuers);
    }

    /**
     * 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).
     *
     * @param keyType The key algorithm type name
     * @param issuers The list of acceptable CA issuer subject names, or null if it does not matter which issuers are
     * used
     *
     * @return Array of the matching alias names, or null if there were no matches
     */
    public String[] getServerAliases(String keyType, Principal[] issuers) {
        return delegate.getServerAliases(keyType, issuers);
    }

    /**
     * Returns the key associated with the given alias.
     *
     * @param alias The alias name
     *
     * @return The requested key, or null if the alias can't be found
     */
    public PrivateKey getPrivateKey(String alias) {
        return delegate.getPrivateKey(alias);
    }
}