001 /****************************************************************
002 * Licensed to the Apache Software Foundation (ASF) under one *
003 * or more contributor license agreements. See the NOTICE file *
004 * distributed with this work for additional information *
005 * regarding copyright ownership. The ASF licenses this file *
006 * to you under the Apache License, Version 2.0 (the *
007 * "License"); you may not use this file except in compliance *
008 * with the License. You may obtain a copy of the License at *
009 * *
010 * http://www.apache.org/licenses/LICENSE-2.0 *
011 * *
012 * Unless required by applicable law or agreed to in writing, *
013 * software distributed under the License is distributed on an *
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
015 * KIND, either express or implied. See the License for the *
016 * specific language governing permissions and limitations *
017 * under the License. *
018 ****************************************************************/
019
020
021
022 package org.apache.james.protocols.smtp.core;
023
024 import java.util.ArrayList;
025 import java.util.Collection;
026
027 import org.apache.james.protocols.smtp.SMTPResponse;
028 import org.apache.james.protocols.smtp.SMTPRetCode;
029 import org.apache.james.protocols.smtp.SMTPSession;
030 import org.apache.james.protocols.smtp.dsn.DSNStatus;
031 import org.apache.james.protocols.smtp.hook.HookResult;
032 import org.apache.james.protocols.smtp.hook.UnknownHook;
033
034 /**
035 * Default command handler for handling unknown commands
036 */
037 public class UnknownCmdHandler extends AbstractHookableCmdHandler<UnknownHook>{
038
039 /**
040 * The name of the command handled by the command handler
041 */
042 public static final String UNKNOWN_COMMAND = "UNKNOWN";
043
044 /**
045 * @see org.apache.james.protocols.api.handler.CommandHandler#getImplCommands()
046 */
047 public Collection<String> getImplCommands() {
048 Collection<String> implCommands = new ArrayList<String>();
049 implCommands.add(UNKNOWN_COMMAND);
050
051 return implCommands;
052 }
053
054 @Override
055 protected SMTPResponse doCoreCmd(SMTPSession session, String command, String parameters) {
056 StringBuilder result = new StringBuilder();
057 result.append(DSNStatus.getStatus(DSNStatus.PERMANENT, DSNStatus.DELIVERY_INVALID_CMD)).append(" Command ").append(command).append(" unrecognized.");
058 return new SMTPResponse(SMTPRetCode.SYNTAX_ERROR_COMMAND_UNRECOGNIZED, result);
059 }
060
061 @Override
062 protected SMTPResponse doFilterChecks(SMTPSession session, String command, String parameters) {
063 session.getState().put("CURR_COMMAND", command);
064 return null;
065 }
066
067 @Override
068 protected HookResult callHook(UnknownHook rawHook, SMTPSession session, String parameters) {
069 return rawHook.doUnknown(session, (String) session.getState().get("CURR_COMMAND"));
070 }
071
072 @Override
073 protected Class<UnknownHook> getHookInterface() {
074 return UnknownHook.class;
075 }
076 }