sonews-drupal: src/org/sonews/daemon/command/ArticleCommand.java@7e24949b87b0

     1 /*

     2  *   SONEWS News Server

     3  *   see AUTHORS for the list of contributors

     4  *

     5  *   This program is free software: you can redistribute it and/or modify

     6  *   it under the terms of the GNU General Public License as published by

     7  *   the Free Software Foundation, either version 3 of the License, or

     8  *   (at your option) any later version.

     9  *

    10  *   This program is distributed in the hope that it will be useful,

    11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of

    12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13  *   GNU General Public License for more details.

    14  *

    15  *   You should have received a copy of the GNU General Public License

    16  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.

    17  */

    19 package org.sonews.daemon.command;

    21 import java.io.IOException;

    22 import org.sonews.storage.Article;

    23 import org.sonews.daemon.NNTPConnection;

    24 import org.sonews.storage.Channel;

    25 import org.sonews.storage.StorageBackendException;

    27 /**

    28  * Class handling the ARTICLE, BODY and HEAD commands.

    29  * @author Christian Lins

    30  * @author Dennis Schwerdel

    31  * @since n3tpd/0.1

    32  */

    33 public class ArticleCommand implements Command

    34 {

    36 	@Override

    37 	public String[] getSupportedCommandStrings()

    38 	{

    39 		return new String[] {"ARTICLE", "BODY", "HEAD"};

    40 	}

    42 	@Override

    43 	public boolean hasFinished()

    44 	{

    45 		return true;

    46 	}

    48 	@Override

    49 	public String impliedCapability()

    50 	{

    51 		return null;

    52 	}

    54 	@Override

    55 	public boolean isStateful()

    56 	{

    57 		return false;

    58 	}

    60 	// TODO: Refactor this method to reduce its complexity!

    61 	@Override

    62 	public void processLine(NNTPConnection conn, final String line, byte[] raw)

    63 		throws IOException

    64 	{

    65 		final String[] command = line.split(" ");

    67 		Article article = null;

    68 		long artIndex = -1;

    69 		if (command.length == 1) {

    70 			article = conn.getCurrentArticle();

    71 			if (article == null) {

    72 				conn.println("420 no current article has been selected");

    73 				return;

    74 			}

    75 		} else if (command[1].matches(NNTPConnection.MESSAGE_ID_PATTERN)) {

    76 			// Message-ID

    77 			article = Article.getByMessageID(command[1]);

    78 			if (article == null) {

    79 				conn.println("430 no such article found");

    80 				return;

    81 			}

    82 		} else {

    83 			// Message Number

    84 			try {

    85 				Channel currentGroup = conn.getCurrentChannel();

    86 				if (currentGroup == null) {

    87 					conn.println("400 no group selected");

    88 					return;

    89 				}

    91 				artIndex = Long.parseLong(command[1]);

    92 				article = currentGroup.getArticle(artIndex);

    93 			} catch (NumberFormatException ex) {

    94 				ex.printStackTrace();

    95 			} catch (StorageBackendException ex) {

    96 				ex.printStackTrace();

    97 			}

    99 			if (article == null) {

   100 				conn.println("423 no such article number in this group");

   101 				return;

   102 			}

   103 			conn.setCurrentArticle(article);

   104 		}

   106 		if (command[0].equalsIgnoreCase("ARTICLE")) {

   107 			conn.println("220 " + artIndex + " " + article.getMessageID()

   108 				+ " article retrieved - head and body follow");

   109 			conn.println(article.getHeaderSource());

   110 			conn.println("");

   111 			conn.println(article.getBody());

   112 			conn.println(".");

   113 		} else if (command[0].equalsIgnoreCase("BODY")) {

   114 			conn.println("222 " + artIndex + " " + article.getMessageID() + " body");

   115 			conn.println(article.getBody());

   116 			conn.println(".");

   117 		} /*

   118 		 * HEAD: This command is mandatory.

   119 		 *

   120 		 * Syntax

   121 		 *    HEAD message-id

   122 		 *    HEAD number

   123 		 *    HEAD

   124 		 *

   125 		 * Responses

   126 		 *

   127 		 * First form (message-id specified)

   128 		 *  221 0|n message-id    Headers follow (multi-line)

   129 		 *  430                   No article with that message-id

   130 		 *

   131 		 * Second form (article number specified)

   132 		 *  221 n message-id      Headers follow (multi-line)

   133 		 *  412                   No newsgroup selected

   134 		 *  423                   No article with that number

   135 		 *

   136 		 * Third form (current article number used)

   137 		 *  221 n message-id      Headers follow (multi-line)

   138 		 *  412                   No newsgroup selected

   139 		 *  420                   Current article number is invalid

   140 		 *

   141 		 * Parameters

   142 		 *  number        Requested article number

   143 		 *  n             Returned article number

   144 		 *  message-id    Article message-id

   145 		 */ else if (command[0].equalsIgnoreCase("HEAD")) {

   146 			conn.println("221 " + artIndex + " " + article.getMessageID()

   147 				+ " Headers follow (multi-line)");

   148 			conn.println(article.getHeaderSource());

   149 			conn.println(".");

   150 		}

   151 	}

   152 }

author	cli
	Sat, 10 Sep 2011 18:18:05 +0200
changeset 45	7e24949b87b0
parent 37	74139325d305
child 48	b78e77619152
permissions	-rwxr-xr-x