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* Licensed to the Apache Software Foundation (ASF) under one *
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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 *
* "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 *
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package org.apache.james.pop3server.core;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.apache.james.lifecycle.LifecycleUtil;
import org.apache.james.pop3server.POP3Response;
import org.apache.james.pop3server.POP3Session;
import org.apache.james.protocols.api.CommandHandler;
import org.apache.james.protocols.api.Request;
import org.apache.james.protocols.api.Response;
import org.apache.mailet.Mail;
/**
* Handles DELE command
*/
public class DeleCmdHandler implements CommandHandler<POP3Session> {
private final static String COMMAND_NAME = "DELE";
/**
* Handler method called upon receipt of a DELE command.
* This command deletes a particular mail message from the
* mailbox.
*
*/
public Response onCommand(POP3Session session, Request request) {
POP3Response response = null;
if (session.getHandlerState() == POP3Session.TRANSACTION) {
int num = 0;
try {
num = Integer.parseInt(request.getArgument());
} catch (Exception e) {
response = new POP3Response(POP3Response.ERR_RESPONSE,"Usage: DELE [mail number]");
return response;
}
try {
Mail mc = session.getUserMailbox().get(num);
Mail dm = (Mail) session.getState().get(POP3Session.DELETED);
if (mc == dm) {
StringBuilder responseBuffer =
new StringBuilder(64)
.append("Message (")
.append(num)
.append(") already deleted.");
response = new POP3Response(POP3Response.ERR_RESPONSE,responseBuffer.toString());
} else {
session.getUserMailbox().set(num, dm);
// we are replacing our reference with "DELETED", so we have
// to dispose the no-more-referenced mail object.
LifecycleUtil.dispose(mc);
response = new POP3Response(POP3Response.OK_RESPONSE,"Message deleted");
}
} catch (IndexOutOfBoundsException iob) {
StringBuilder responseBuffer =
new StringBuilder(64)
.append("Message (")
.append(num)
.append(") does not exist.");
response = new POP3Response(POP3Response.ERR_RESPONSE,responseBuffer.toString());
}
} else {
response = new POP3Response(POP3Response.ERR_RESPONSE);
}
return response;
}
/**
* @see org.apache.james.api.protocol.CommonCommandHandler#getImplCommands()
*/
public Collection<String> getImplCommands() {
List<String> commands = new ArrayList<String>();
commands.add(COMMAND_NAME);
return commands;
}
}