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      1 /*
      2  * Copyright 2007 the original author or authors.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package org.mockftpserver.stub.command;
     17 
     18 import java.util.ArrayList;
     19 import java.util.List;
     20 
     21 import org.mockftpserver.core.command.Command;
     22 import org.mockftpserver.core.command.CommandHandler;
     23 import org.mockftpserver.core.command.InvocationRecord;
     24 import org.mockftpserver.core.command.ReplyCodes;
     25 import org.mockftpserver.core.session.Session;
     26 
     27 /**
     28  * CommandHandler for the USER command. The <code>passwordRequired</code> property defaults to true,
     29  * indicating that a password is required following the user name. If true, this command handler
     30  * returns a reply of 331. If false, return a reply of 230.
     31  * <p>
     32  * Each invocation record stored by this CommandHandler includes the following data element key/values:
     33  * <ul>
     34  *    <li>{@link #USERNAME_KEY} ("username") - the user name submitted on the invocation (the first command parameter)
     35  * </ul>
     36  *
     37  * @version $Revision$ - $Date$
     38  *
     39  * @author Chris Mair
     40  */
     41 public final class UserCommandHandler extends AbstractStubCommandHandler implements CommandHandler {
     42 
     43     public static final String USERNAME_KEY = "username";
     44 
     45     private boolean passwordRequired = true;
     46     private List usernames = new ArrayList();
     47 
     48     /**
     49      * Constructor.
     50      */
     51     public UserCommandHandler() {
     52         // Do not initialize replyCode -- will be set dynamically
     53     }
     54 
     55     /**
     56      * @see org.mockftpserver.core.command.CommandHandler#handleCommand(Command, Session, InvocationRecord)
     57      */
     58     public void handleCommand(Command command, Session session, InvocationRecord invocationRecord) {
     59         usernames.add(command.getRequiredString(0));
     60         invocationRecord.set(USERNAME_KEY, command.getRequiredString(0));
     61 
     62         // Only use dynamic reply code if the replyCode property was NOT explicitly set
     63         if (replyCode == 0) {
     64             int code = (passwordRequired) ? ReplyCodes.USER_NEED_PASSWORD_OK : ReplyCodes.USER_LOGGED_IN_OK;
     65             sendReply(session, code, replyMessageKey, replyText, null);
     66         }
     67         else {
     68             sendReply(session);
     69         }
     70     }
     71 
     72     /**
     73      * Return true if a password is required at login. See {@link #setPasswordRequired(boolean)}.
     74      * @return the passwordRequired flag
     75      */
     76     public boolean isPasswordRequired() {
     77         return passwordRequired;
     78     }
     79 
     80     /**
     81      * Set true to indicate that a password is required. If true, this command handler returns a reply
     82      * of 331. If false, return a reply of 230.
     83      * @param passwordRequired - is a password required for login
     84      */
     85     public void setPasswordRequired(boolean passwordRequired) {
     86         this.passwordRequired = passwordRequired;
     87     }
     88 
     89 }
     90