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* regarding copyright ownership. The ASF licenses this file *
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package org.apache.james.protocols.smtp.core.fastfail;
import java.util.Collection;
import org.apache.james.protocols.smtp.SMTPRetCode;
import org.apache.james.protocols.smtp.SMTPSession;
import org.apache.james.protocols.smtp.dsn.DSNStatus;
import org.apache.james.protocols.smtp.hook.HookResult;
import org.apache.james.protocols.smtp.hook.HookReturnCode;
import org.apache.james.protocols.smtp.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.protocols.smtp.hook.RcptHook#doRcpt(org.apache.james.protocols.smtp.SMTPSession, org.apache.mailet.MailAddress, org.apache.mailet.MailAddress)
*/
@SuppressWarnings("unchecked")
public HookResult doRcpt(SMTPSession session, MailAddress sender, MailAddress rcpt) {
Collection rcptList = (Collection) session.getState().get(SMTPSession.RCPT_LIST);
// Check if the recipient is already in the rcpt list
if(rcptList != null && rcptList.contains(rcpt)) {
StringBuilder responseBuffer = new StringBuilder();
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);
}
}