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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 *
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* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
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* software distributed under the License is distributed on an *
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package org.apache.james.protocols.pop3.core;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import org.apache.james.protocols.api.Request;
import org.apache.james.protocols.api.Response;
import org.apache.james.protocols.api.handler.CommandHandler;
import org.apache.james.protocols.pop3.POP3Response;
import org.apache.james.protocols.pop3.POP3Session;
/**
* Handles USER command
*/
public class UserCmdHandler implements CommandHandler<POP3Session>, CapaCapability {
private static final Collection<String> COMMANDS = Collections.unmodifiableCollection(Arrays.asList("USER"));
private static final List<String> CAPS = Collections.unmodifiableList(Arrays.asList("USER"));
/**
* Handler method called upon receipt of a USER command. Reads in the user
* id.
*/
public Response onCommand(POP3Session session, Request request) {
POP3Response response = null;
String parameters = request.getArgument();
if (session.getHandlerState() == POP3Session.AUTHENTICATION_READY && parameters != null) {
session.setUser(parameters);
session.setHandlerState(POP3Session.AUTHENTICATION_USERSET);
response = new POP3Response(POP3Response.OK_RESPONSE);
} else {
response = new POP3Response(POP3Response.ERR_RESPONSE);
}
return response;
}
/**
* @see org.apache.james.pop3server.core.CapaCapability#getImplementedCapabilities(org.apache.james.pop3server.POP3Session)
*/
public List<String> getImplementedCapabilities(POP3Session session) {
return CAPS;
}
/**
* @see org.apache.james.protocols.api.handler.CommandHandler#getImplCommands()
*/
public Collection<String> getImplCommands() {
return COMMANDS;
}
}