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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.parameter;
21  
22  import org.waarp.common.command.ReplyCode;
23  import org.waarp.common.command.exception.Reply501Exception;
24  import org.waarp.common.command.exception.Reply504Exception;
25  import org.waarp.common.exception.InvalidArgumentException;
26  import org.waarp.ftp.core.command.AbstractCommand;
27  import org.waarp.ftp.core.command.FtpArgumentCode;
28  
29  /**
30   * STRU command
31   */
32  public class STRU extends AbstractCommand {
33    @Override
34    public final void exec() throws Reply501Exception, Reply504Exception {
35      // First Check if any argument
36      if (!hasArg()) {
37        getSession().getDataConn()
38                    .setStructure(FtpArgumentCode.TransferStructure.FILE);
39        getSession().setReplyCode(ReplyCode.REPLY_200_COMMAND_OKAY,
40                                  "Structure set to " +
41                                  FtpArgumentCode.TransferStructure.FILE.name());
42        return;
43      }
44      final FtpArgumentCode.TransferStructure transferStructure;
45      try {
46        transferStructure =
47            FtpArgumentCode.getTransferStructure(getArg().charAt(0));
48      } catch (final InvalidArgumentException e) {
49        throw new Reply501Exception("Unrecognize Structure: " + getArg());
50      }
51      if (transferStructure == FtpArgumentCode.TransferStructure.FILE) {
52        getSession().getDataConn()
53                    .setStructure(FtpArgumentCode.TransferStructure.FILE);
54      } else if (transferStructure == FtpArgumentCode.TransferStructure.RECORD) {
55        getSession().getDataConn()
56                    .setStructure(FtpArgumentCode.TransferStructure.RECORD);
57      } else {
58        throw new Reply504Exception(
59            "Structure not implemented: " + transferStructure.name());
60      }
61      getSession().setReplyCode(ReplyCode.REPLY_200_COMMAND_OKAY,
62                                "Structure set to " + transferStructure.name());
63    }
64  
65  }