/***
 * 
 *******
 * The contents of this file are subject to the "END USER LICENSE AGREEMENT FOR F5
 * Software Development Kit for iControl"; you may not use this file except in
 * compliance with the License. The License is included in the iControl
 * Software Development Kit.
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is iControl Code and related documentation
 * distributed by F5.
 *
 * Portions created by F5 are Copyright (C) 1996-2004 F5 Networks
 * Inc. All Rights Reserved.  iControl (TM) is a registered trademark of
 * F5 Networks, Inc.
 *
 * Alternatively, the contents of this file may be used under the terms
 * of the GNU General Public License (the "GPL"), in which case the
 * provisions of GPL are applicable instead of those above.  If you wish
 * to allow use of your version of this file only under the terms of the
 * GPL and not to allow others to use your version of this file under the
 * License, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the GPL.
 * If you do not delete the provisions above, a recipient may use your
 * version of this file under either the License or the GPL.
 */
package com.github.abola.crawler;

import java.security.AccessController;
import java.security.InvalidAlgorithmParameterException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.PrivilegedAction;
import java.security.Security;
import java.security.cert.X509Certificate;

import javax.net.ssl.ManagerFactoryParameters;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactorySpi;
import javax.net.ssl.X509TrustManager;

public final class XTrustProvider extends java.security.Provider
{
    private final static String NAME = "XTrustJSSE";
    private final static String INFO =
            "XTrust JSSE Provider (implements trust factory with truststore validation disabled)";
    private final static double VERSION = 1.0D;

    public XTrustProvider()
    {
        super(NAME, VERSION, INFO);

        AccessController.doPrivileged(new PrivilegedAction()
        {
            public Object run()
            {
                put("TrustManagerFactory." + TrustManagerFactoryImpl.getAlgorithm(),
                        TrustManagerFactoryImpl.class.getName());
                return null;
            }
        });
    }

    public static void install()
    {
        if(Security.getProvider(NAME) == null)
        {
            Security.insertProviderAt(new XTrustProvider(), 2);
            Security.setProperty("ssl.TrustManagerFactory.algorithm",
                    TrustManagerFactoryImpl.getAlgorithm());
        }
    }

    public final static class TrustManagerFactoryImpl extends TrustManagerFactorySpi
    {
        public TrustManagerFactoryImpl() { }
        public static String getAlgorithm() { return "XTrust509"; }
        protected void engineInit(KeyStore keystore) throws KeyStoreException { }
        protected void engineInit(ManagerFactoryParameters mgrparams)
                throws InvalidAlgorithmParameterException
        {
            throw new InvalidAlgorithmParameterException(
                    XTrustProvider.NAME + " does not use ManagerFactoryParameters");
        }

        protected TrustManager[] engineGetTrustManagers()
        {
            return new TrustManager[] { new X509TrustManager()
            {
                public X509Certificate[] getAcceptedIssuers() { return null; }
                public void checkClientTrusted(X509Certificate[] certs, String authType) { }
                public void checkServerTrusted(X509Certificate[] certs, String authType) { }
            }};
        }
    }
}