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The NetCDF-Java Library is a Java interface to NetCDF files, as well as to many other types of scientific data formats.

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/*
 * ====================================================================
 *
 *  Copyright 2002-2004 The Apache Software Foundation
 *
 *  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.
 * ====================================================================
 *
 * 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
 * .
 *
 */

package ucar.nc2.util.net;

import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;

import org.apache.commons.httpclient.ConnectTimeoutException;
import org.apache.commons.httpclient.HttpClientError;
import org.apache.commons.httpclient.params.HttpConnectionParams;
import org.apache.commons.httpclient.protocol.ControllerThreadSocketFactory;
import org.apache.commons.httpclient.protocol.SecureProtocolSocketFactory;
import org.apache.commons.httpclient.protocol.ProtocolSocketFactory;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;

/**
 * 

* EasySSLProtocolSocketFactory can be used to creats SSL {@link Socket}s * that accept self-signed certificates. *

*

* This socket factory SHOULD NOT be used for productive systems * due to security reasons, unless it is a concious decision and * you are perfectly aware of security implications of accepting * self-signed certificates *

*

*

* Example of using custom protocol socket factory for a specific host: *

 *     Protocol easyhttps = new Protocol("https", new EasySSLProtocolSocketFactory(), 443);
 * 

* HttpClient client = new HttpClient(); * client.getHostConfiguration().setHost("localhost", 443, easyhttps); * // use relative url only * GetMethod httpget = new GetMethod("/"); * client.executeMethod(httpget); *

*

*

* Example of using custom protocol socket factory per default instead of the standard one: *

 *     Protocol easyhttps = new Protocol("https", new EasySSLProtocolSocketFactory(), 443);
 *     Protocol.registerProtocol("https", easyhttps);
 * 

* HttpClient client = new HttpClient(); * GetMethod httpget = new GetMethod("https://localhost/"); * client.executeMethod(httpget); *

*

* * @author Oleg Kalnichevski *

*

* DISCLAIMER: HttpClient developers DO NOT actively support this component. * The component is provided as a reference material, which may be inappropriate * for use without additional customization. *

*/ public class EasySSLProtocolSocketFactory implements ProtocolSocketFactory { /** * Log object for this class. */ static private org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(EasySSLProtocolSocketFactory.class); //private static final Log LOG = LogFactory.getLog(EasySSLProtocolSocketFactory.class); private SSLContext sslcontext = null; /** * Constructor for EasySSLProtocolSocketFactory. */ public EasySSLProtocolSocketFactory() { super(); } private static SSLContext createEasySSLContext() { try { SSLContext context = SSLContext.getInstance("SSL"); context.init( null, new TrustManager[]{new EasyX509TrustManager(null)}, null); return context; } catch (Exception e) { logger.error("createEasySSLContext", e); throw new HttpClientError(e.toString()); } } private SSLContext getSSLContext() { if (this.sslcontext == null) { this.sslcontext = createEasySSLContext(); } return this.sslcontext; } /** * @see SecureProtocolSocketFactory#createSocket(java.lang.String,int,java.net.InetAddress,int) */ public Socket createSocket( String host, int port, InetAddress clientHost, int clientPort) throws IOException, UnknownHostException { return getSSLContext().getSocketFactory().createSocket( host, port, clientHost, clientPort ); } /** * Attempts to get a new socket connection to the given host within the given time limit. *

* To circumvent the limitations of older JREs that do not support connect timeout a * controller thread is executed. The controller thread attempts to create a new socket * within the given limit of time. If socket constructor does not return until the * timeout expires, the controller terminates and throws an {@link ConnectTimeoutException} *

* * @param host the host name/IP * @param port the port on the host * @param localAddress the local host name/IP to bind the socket to * @param localPort the port on the local machine * @param params {@link HttpConnectionParams Http connection parameters} * @return Socket a new socket * @throws IOException if an I/O error occurs while creating the socket * @throws UnknownHostException if the IP address of the host cannot be * determined */ public Socket createSocket( final String host, final int port, final InetAddress localAddress, final int localPort, final HttpConnectionParams params ) throws IOException, UnknownHostException, ConnectTimeoutException { if (params == null) { throw new IllegalArgumentException("Parameters may not be null"); } int timeout = params.getConnectionTimeout(); if (timeout == 0) { return createSocket(host, port, localAddress, localPort); } else { // To be eventually deprecated when migrated to Java 1.4 or above return ControllerThreadSocketFactory.createSocket( this, host, port, localAddress, localPort, timeout); } } /** * @see SecureProtocolSocketFactory#createSocket(java.lang.String,int) */ public Socket createSocket(String host, int port) throws IOException, UnknownHostException { return getSSLContext().getSocketFactory().createSocket( host, port ); } /** * @see SecureProtocolSocketFactory#createSocket(java.net.Socket,java.lang.String,int,boolean) */ public Socket createSocket( Socket socket, String host, int port, boolean autoClose) throws IOException, UnknownHostException { return getSSLContext().getSocketFactory().createSocket( socket, host, port, autoClose ); } }




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