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 /*
  * $Id: RaHelper.java 19191 2010-08-25 21:05:23Z tcarlson $
  * --------------------------------------------------------------------------------------
  * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
  *
  * The software in this package is published under the terms of the CPAL v1.0
  * license, a copy of which has been included with this distribution in the
  * LICENSE.txt file.
  */
package org.mule.module.jca;
import  javax.resource.ResourceException;
import  javax.resource.spi.ConnectionRequestInfo;
import  javax.resource.spi.ManagedConnectionFactory;
import  javax.resource.spi.security.PasswordCredential;
RaHelper is a collection of helper methods used by this RA implementation
// @ThreadSafe
public class RaHelper
    public static PasswordCredential getPasswordCredential(final ManagedConnectionFactory mcf,
                                                           final Subject subject,
                                                           ConnectionRequestInfo info)
        throws ResourceException
    {
        if (subject == null)
        {
            if (info == null)
            {
                return null;
            }
            else
            {
                MuleConnectionRequestInfo muleInfo = (MuleConnectionRequestInfo)info;
                // Can't create a PC with null values
                if (muleInfo.getUserName() == null || muleInfo.getPassword() == null)
                {
                    // logger.info("\tUtil::GetPasswordCred: User or password is
                    // null");
                    return null;
                }
                char[] password = muleInfo.getPassword().toCharArray();
                PasswordCredential pc = new PasswordCredential(muleInfo.getUserName(), password);
                pc.setManagedConnectionFactory(mcf);
                return pc;
            }
        }
        else
        {
            PasswordCredential pc = (PasswordCredential)AccessController.doPrivileged(new PrivilegedAction()
            {
                public Object run()
                {
                    Set creds = subject.getPrivateCredentials(PasswordCredential.class);
                    Iterator iter = creds.iterator();
                    while (iter.hasNext())
                    {
                        PasswordCredential candidate = (PasswordCredential)iter.next();
                        if (candidate != null)
                        {
                            ManagedConnectionFactory candidatemcf = candidate.getManagedConnectionFactory();
                            if (candidatemcf != null && candidatemcf.equals(mcf))
                            {
                                return candidate;
                            }
                        }
                    }
                    return null;
                }
            });
            if (pc == null)
            {
                throw new java.lang.SecurityException(CoreMessages.authNoCredentials().getMessage());
            }
            else
            {
                return pc;
            }
        }
    }
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