chrismair | 00dc7bd | 2014-05-11 21:21:28 +0000 | [diff] [blame] | 1 | /*
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| 2 | * Copyright 2008 the original author or authors.
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | package org.mockftpserver.fake.command;
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| 17 |
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| 18 | import org.mockftpserver.core.command.Command;
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| 19 | import org.mockftpserver.core.command.ReplyCodes;
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| 20 | import org.mockftpserver.core.session.Session;
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| 21 | import org.mockftpserver.core.util.StringUtil;
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| 22 |
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| 23 | import java.util.List;
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| 24 |
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| 25 | /**
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| 26 | * CommandHandler for the NLST command. Handler logic:
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| 27 | * <ol>
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| 28 | * <li>If the user has not logged in, then reply with 530 and terminate</li>
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| 29 | * <li>Send an initial reply of 150</li>
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| 30 | * <li>If the current user does not have read access to the file or directory to be listed, then reply with 550 and terminate</li>
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| 31 | * <li>If an error occurs during processing, then send a reply of 451 and terminate</li>
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| 32 | * <li>If the optional pathname parameter is missing, then send a directory listing for
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| 33 | * the current directory across the data connection</li>
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| 34 | * <li>Otherwise, if the optional pathname parameter specifies a directory or group of files,
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| 35 | * then send a directory listing for the specified directory across the data connection</li>
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| 36 | * <li>Otherwise, if the pathname parameter does not specify an existing directory or group of files,
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| 37 | * then send an empty response across the data connection</li>
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| 38 | * <li>Send a final reply with 226</li>
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| 39 | * </ol>
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| 40 | * The directory listing sent includes filenames only, separated by end-of-line characters.
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| 41 | *
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| 42 | * @author Chris Mair
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| 43 | * @version $Revision$ - $Date$
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| 44 | */
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| 45 | public class NlstCommandHandler extends AbstractFakeCommandHandler {
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| 46 |
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| 47 | protected void handle(Command command, Session session) {
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| 48 | verifyLoggedIn(session);
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| 49 | sendReply(session, ReplyCodes.TRANSFER_DATA_INITIAL_OK);
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| 50 | String path = getRealPath(session, command.getParameter(0));
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| 51 |
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| 52 | // User must have read permission to the path
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| 53 | if (getFileSystem().exists(path)) {
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| 54 | this.replyCodeForFileSystemException = ReplyCodes.READ_FILE_ERROR;
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| 55 | verifyReadPermission(session, path);
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| 56 | }
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| 57 |
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| 58 | this.replyCodeForFileSystemException = ReplyCodes.SYSTEM_ERROR;
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| 59 | List names = getFileSystem().listNames(path);
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| 60 | String directoryListing = StringUtil.join(names, endOfLine());
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| 61 | directoryListing += directoryListing.length() > 0 ? endOfLine() : "";
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| 62 |
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| 63 | session.openDataConnection();
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| 64 | session.sendData(directoryListing.getBytes(), directoryListing.length());
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| 65 | session.closeDataConnection();
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| 66 |
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| 67 | sendReply(session, ReplyCodes.TRANSFER_DATA_FINAL_OK);
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| 68 | }
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| 69 |
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| 70 | } |