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.extension;
21
22 import org.waarp.common.command.ReplyCode;
23 import org.waarp.common.command.exception.CommandAbstractException;
24 import org.waarp.common.command.exception.Reply501Exception;
25 import org.waarp.common.digest.FilesystemBasedDigest;
26 import org.waarp.ftp.core.command.AbstractCommand;
27
28 /**
29 * XDIGEST command: takes an algorithme name (CRC32, ADLER32, MD5, MD2,
30 * SHA-1, SHA-256, SHA-384, SHA-512) and a filename and returns the
31 * digest of the file
32 */
33 public class XDIGEST extends AbstractCommand {
34 @Override
35 public final void exec() throws CommandAbstractException {
36 if (!hasArg()) {
37 invalidCurrentCommand();
38 throw new Reply501Exception(
39 "Need an algorihm and a pathname as argument");
40 }
41 final String[] args = getArgs();
42 if (args == null || args.length < 2) {
43 throw new Reply501Exception(
44 "Need an algorihm and a pathname as argument");
45 }
46 final String crc = FilesystemBasedDigest.getHex(
47 getSession().getDir().getDigest(args[1], args[0]));
48 getSession().setReplyCode(ReplyCode.REPLY_250_REQUESTED_FILE_ACTION_OKAY,
49 crc + " \"" + args[1] + "\" " + args[0]);
50 }
51
52 }