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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.service;
21  
22  import org.waarp.common.command.ReplyCode;
23  import org.waarp.common.command.exception.CommandAbstractException;
24  import org.waarp.common.command.exception.Reply452Exception;
25  import org.waarp.common.command.exception.Reply501Exception;
26  import org.waarp.common.exception.InvalidArgumentException;
27  import org.waarp.ftp.core.command.AbstractCommand;
28  
29  /**
30   * ALLO command: test if enough space is disponible
31   */
32  public class ALLO extends AbstractCommand {
33    @Override
34    public final void exec() throws CommandAbstractException {
35      // First Check if any argument
36      if (!hasArg()) {
37        throw new Reply501Exception("Need a size as argument");
38      }
39      final String[] args = getArgs();
40      final int size;
41      try {
42        size = getValue(args[0]);
43      } catch (final InvalidArgumentException e) {
44        throw new Reply501Exception("Need a valid size as argument: " + args[0]);
45      }
46      final long free = getSession().getDir().getFreeSpace();
47      if (free > 0 && free < size) {
48        throw new Reply452Exception("Not enough space left");
49      }
50      if (free == -1) {
51        getSession().setReplyCode(ReplyCode.REPLY_202_COMMAND_NOT_IMPLEMENTED,
52                                  null);
53      } else {
54        getSession().setReplyCode(ReplyCode.REPLY_200_COMMAND_OKAY,
55                                  "ALLO OK: " + free + " bytes available");
56      }
57    }
58  
59  }