Package org.apache.james.mailet.crypto

Source Code of org.apache.james.mailet.crypto.InitJCE

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* 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  *
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package org.apache.james.mailet.crypto;

import java.security.Provider;
import java.security.Security;

import javax.activation.CommandMap;
import javax.activation.MailcapCommandMap;

/**
* Security Providers initialization class. The first call of the init method
* will have the class loader do the job. This technique ensures proper
* initialization without the need of maintaining the
* <i>${java_home}/lib/security/java.security</i> file, that would otherwise
* need the addition of the following line:
* <code>security.provider.<i>n</i>=org.bouncycastle.jce.provider.BouncyCastleProvider</code>.
*
* The call also registers to the javamail's MailcapCommandMap the content
* handlers that are needed to work with s/mime mails.
*
*/
public class InitJCE {
    private static String bouncyCastleProviderClassName = "org.bouncycastle.jce.provider.BouncyCastleProvider";
    private static boolean initialized = false;

    /**
     * Method that registers the security provider BouncyCastle as a system
     * security provider. The provider class is dinamically loaded on runtime so
     * there is no need to include the bouncycastle jar in the James
     * distribution. It can be downloaded and installed by the user if she needs
     * it.
     */       
    public static void init() throws InstantiationException, IllegalAccessException, ClassNotFoundException {
        if (!initialized) {
            Security.addProvider((Provider)Class.forName(bouncyCastleProviderClassName).newInstance());
           
            MailcapCommandMap mailcap = (MailcapCommandMap) CommandMap.getDefaultCommandMap();

            mailcap.addMailcap("application/pkcs7-signature;; x-java-content-handler=org.bouncycastle.mail.smime.handlers.pkcs7_signature");
            mailcap.addMailcap("application/pkcs7-mime;; x-java-content-handler=org.bouncycastle.mail.smime.handlers.pkcs7_mime");
            mailcap.addMailcap("application/x-pkcs7-signature;; x-java-content-handler=org.bouncycastle.mail.smime.handlers.x_pkcs7_signature");
            mailcap.addMailcap("application/x-pkcs7-mime;; x-java-content-handler=org.bouncycastle.mail.smime.handlers.x_pkcs7_mime");
            mailcap.addMailcap("multipart/signed;; x-java-content-handler=org.bouncycastle.mail.smime.handlers.multipart_signed");

            CommandMap.setDefaultCommandMap(mailcap);
           
            initialized = true;
        } else return;
    }
}
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