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Java example source code file (X509HostnameVerifier.java)

This example source code file (X509HostnameVerifier.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java tags/keywords

io, ioexception, net, ssl, sslexception, sslsocket, string, x509certificate, x509hostnameverifier

The X509HostnameVerifier.java example source code

/*
 * ====================================================================
 * 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
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.http.conn.ssl;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSocket;
import java.io.IOException;
import java.security.cert.X509Certificate;

/**
 * Interface for checking if a hostname matches the names stored inside the
 * server's X.509 certificate.  This interface extends 
 * {@link javax.net.ssl.HostnameVerifier}, but it is recommended to use 
 * methods added by X509HostnameVerifier.
 *
 * @since 4.0
 */
public interface X509HostnameVerifier extends HostnameVerifier {

	/**
	 * Verifies that the host name is an acceptable match with the server's 
	 * authentication scheme based on the given {@link SSLSocket}.
	 *   
	 * @param host the host.
	 * @param ssl the SSL socket.
	 * @throws IOException if an I/O error occurs or the verification process
	 *   fails. 
	 */
    void verify(String host, SSLSocket ssl) throws IOException;

	/**
	 * Verifies that the host name is an acceptable match with the server's 
	 * authentication scheme based on the given {@link X509Certificate}.
	 *   
	 * @param host the host.
	 * @param cert the certificate.
	 * @throws SSLException if the verification process fails. 
	 */
    void verify(String host, X509Certificate cert) throws SSLException;

    /**
     * Checks to see if the supplied hostname matches any of the supplied CNs
     * or "DNS" Subject-Alts.  Most implementations only look at the first CN,
     * and ignore any additional CNs.  Most implementations do look at all of
     * the "DNS" Subject-Alts. The CNs or Subject-Alts may contain wildcards
     * according to RFC 2818.
     *
     * @param cns         CN fields, in order, as extracted from the X.509
     *                    certificate.
     * @param subjectAlts Subject-Alt fields of type 2 ("DNS"), as extracted
     *                    from the X.509 certificate.
     * @param host        The hostname to verify.
	 * @throws SSLException if the verification process fails. 
     */
    void verify(String host, String[] cns, String[] subjectAlts)
          throws SSLException;

}

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