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1   /*
2    * This file is part of Waarp Project (named also Waarp or GG).
3    *
4    *  Copyright (c) 2019, Waarp SAS, and individual contributors by the @author
5    *  tags. See the COPYRIGHT.txt in the distribution for a full listing of
6    * individual contributors.
7    *
8    *  All Waarp Project is free software: you can redistribute it and/or
9    * modify it under the terms of the GNU General Public License as published by
10   * the Free Software Foundation, either version 3 of the License, or (at your
11   * option) any later version.
12   *
13   * Waarp is distributed in the hope that it will be useful, but WITHOUT ANY
14   * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
15   * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
16   *
17   *  You should have received a copy of the GNU General Public License along with
18   * Waarp . If not, see <http://www.gnu.org/licenses/>.
19   */
20  package org.waarp.ftp.core.command.internal;
21  
22  import org.waarp.common.command.ReplyCode;
23  import org.waarp.common.command.exception.Reply503Exception;
24  import org.waarp.common.logging.WaarpLogger;
25  import org.waarp.common.logging.WaarpLoggerFactory;
26  import org.waarp.ftp.core.command.AbstractCommand;
27  import org.waarp.ftp.core.command.FtpCommandCode;
28  import org.waarp.ftp.core.command.info.NOOP;
29  
30  /**
31   * Incorrect command
32   */
33  public class IncorrectCommand extends AbstractCommand {
34    /**
35     * Internal Logger
36     */
37    private static final WaarpLogger logger =
38        WaarpLoggerFactory.getLogger(IncorrectCommand.class);
39  
40    @Override
41    public final void exec() throws Reply503Exception {
42      getSession().setReplyCode(ReplyCode.REPLY_503_BAD_SEQUENCE_OF_COMMANDS,
43                                "Bas sequence of commands: " + getCommand() +
44                                " following " +
45                                getSession().getPreviousCommand().getCommand());
46      logger.warn(getSession().getAnswer());
47      if (getSession().getPreviousCommand().getCode() !=
48          FtpCommandCode.Connection &&
49          getSession().getPreviousCommand().getCode() != FtpCommandCode.PASS &&
50          getSession().getPreviousCommand().getCode() != FtpCommandCode.USER) {
51        getSession().setNextCommand(new NOOP(getSession()));
52      } else {
53        invalidCurrentCommand();
54      }
55      throw new Reply503Exception(getSession().getReplyCode().getMesg());
56    }
57  }