/****************************************************************
 * 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.                                           *
 ****************************************************************/




package org.apache.james.smtpserver.core.filter.fastfail;

import java.util.Collection;

import org.apache.james.dsn.DSNStatus;
import org.apache.james.smtpserver.SMTPRetCode;
import org.apache.james.smtpserver.SMTPSession;
import org.apache.james.smtpserver.hook.HookResult;
import org.apache.james.smtpserver.hook.HookReturnCode;
import org.apache.james.smtpserver.hook.RcptHook;
import org.apache.mailet.MailAddress;

/**
 * 
 * This handler can be used to just ignore duplicated recipients. 
 */
public class SupressDuplicateRcptHandler implements RcptHook {

    /**
     * @see org.apache.james.smtpserver.hook.RcptHook#doRcpt(org.apache.james.smtpserver.SMTPSession, org.apache.mailet.MailAddress, org.apache.mailet.MailAddress)
     */
    public HookResult doRcpt(SMTPSession session, MailAddress sender, MailAddress rcpt) {
        Collection rcptList = (Collection) session.getState().get(SMTPSession.RCPT_LIST);
    
        // Check if the recipient is allready in the rcpt list
        if(rcptList != null && rcptList.contains(rcpt)) {
            StringBuffer responseBuffer = new StringBuffer();
        
            responseBuffer.append(DSNStatus.getStatus(DSNStatus.SUCCESS, DSNStatus.ADDRESS_VALID))
                          .append(" Recipient <")
                          .append(rcpt.toString())
                          .append("> OK");
            session.getLogger().debug("Duplicate recipient not add to recipient list: " + rcpt.toString());
            return new HookResult(HookReturnCode.OK,SMTPRetCode.MAIL_OK, responseBuffer.toString());
        }
        return new HookResult(HookReturnCode.DECLINED);
    }
}

@@ -1930,16 +1930,51 @@
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+    @SuppressWarnings(%22unchecked%22)%0A
     publ
@@ -2189,17 +2189,16 @@
 nt is al
-l
 ready in
@@ -2290,18 +2290,19 @@
 StringBu
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+ild
 er respo
@@ -2325,18 +2325,19 @@
 StringBu
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