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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.Reply500Exception;
24  import org.waarp.common.command.exception.Reply501Exception;
25  import org.waarp.ftp.core.command.AbstractCommand;
26  
27  /**
28   * Internal limit bandwidth command that will change the global limit bandwidth
29   */
30  public class LIMITBANDWIDTH extends AbstractCommand {
31    @Override
32    public final void exec() throws Reply501Exception, Reply500Exception {
33      if (!getSession().getAuth().isAdmin()) {
34        // not admin
35        throw new Reply500Exception("Command Not Allowed");
36      }
37      if (!hasArg()) {
38        // reset to default
39        getConfiguration().changeNetworkLimit(0, 0);
40        getSession().setReplyCode(ReplyCode.REPLY_200_COMMAND_OKAY,
41                                  "Limit reset to default");
42        return;
43      }
44      final String[] limits = getArgs();
45      final long writeLimit;
46      final long readLimit;
47      try {
48        if (limits.length == 1) {
49          writeLimit = Long.parseLong(limits[0]);
50          readLimit = writeLimit;
51        } else {
52          writeLimit = Long.parseLong(limits[0]);
53          readLimit = Long.parseLong(limits[1]);
54        }
55      } catch (final NumberFormatException e) {
56        throw new Reply501Exception(getCommand() +
57                                    " ([write and read limits in b/s] | [write limit in b/s] [read limit in b/s]");
58      }
59      getConfiguration().changeNetworkLimit(writeLimit, readLimit);
60      getSession().setReplyCode(ReplyCode.REPLY_200_COMMAND_OKAY,
61                                "Limit set to new values");
62    }
63  
64  }