1.1 --- a/org/sonews/daemon/command/XPatCommand.java Sun Aug 29 17:04:25 2010 +0200
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,170 +0,0 @@
1.4 -/*
1.5 - * SONEWS News Server
1.6 - * see AUTHORS for the list of contributors
1.7 - *
1.8 - * This program is free software: you can redistribute it and/or modify
1.9 - * it under the terms of the GNU General Public License as published by
1.10 - * the Free Software Foundation, either version 3 of the License, or
1.11 - * (at your option) any later version.
1.12 - *
1.13 - * This program is distributed in the hope that it will be useful,
1.14 - * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.15 - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.16 - * GNU General Public License for more details.
1.17 - *
1.18 - * You should have received a copy of the GNU General Public License
1.19 - * along with this program. If not, see <http://www.gnu.org/licenses/>.
1.20 - */
1.21 -
1.22 -package org.sonews.daemon.command;
1.23 -
1.24 -import java.io.IOException;
1.25 -import java.util.List;
1.26 -import java.util.Locale;
1.27 -import java.util.regex.PatternSyntaxException;
1.28 -import org.sonews.daemon.NNTPConnection;
1.29 -import org.sonews.storage.StorageBackendException;
1.30 -import org.sonews.storage.StorageManager;
1.31 -import org.sonews.util.Pair;
1.32 -
1.33 -/**
1.34 - * <pre>
1.35 - * XPAT header range|<message-id> pat [pat...]
1.36 - *
1.37 - * The XPAT command is used to retrieve specific headers from
1.38 - * specific articles, based on pattern matching on the contents of
1.39 - * the header. This command was first available in INN.
1.40 - *
1.41 - * The required header parameter is the name of a header line (e.g.
1.42 - * "subject") in a news group article. See RFC-1036 for a list
1.43 - * of valid header lines. The required range argument may be
1.44 - * any of the following:
1.45 - * an article number
1.46 - * an article number followed by a dash to indicate
1.47 - * all following
1.48 - * an article number followed by a dash followed by
1.49 - * another article number
1.50 - *
1.51 - * The required message-id argument indicates a specific
1.52 - * article. The range and message-id arguments are mutually
1.53 - * exclusive. At least one pattern in wildmat must be specified
1.54 - * as well. If there are additional arguments the are joined
1.55 - * together separated by a single space to form one complete
1.56 - * pattern. Successful responses start with a 221 response
1.57 - * followed by a the headers from all messages in which the
1.58 - * pattern matched the contents of the specified header line. This
1.59 - * includes an empty list. Once the output is complete, a period
1.60 - * is sent on a line by itself. If the optional argument is a
1.61 - * message-id and no such article exists, the 430 error response
1.62 - * is returned. A 502 response will be returned if the client only
1.63 - * has permission to transfer articles.
1.64 - *
1.65 - * Responses
1.66 - *
1.67 - * 221 Header follows
1.68 - * 430 no such article
1.69 - * 502 no permission
1.70 - *
1.71 - * Response Data:
1.72 - *
1.73 - * art_nr fitting_header_value
1.74 - *
1.75 - * </pre>
1.76 - * [Source:"draft-ietf-nntp-imp-02.txt"] [Copyright: 1998 S. Barber]
1.77 - *
1.78 - * @author Christian Lins
1.79 - * @since sonews/0.5.0
1.80 - */
1.81 -public class XPatCommand implements Command
1.82 -{
1.83 -
1.84 - @Override
1.85 - public String[] getSupportedCommandStrings()
1.86 - {
1.87 - return new String[]{"XPAT"};
1.88 - }
1.89 -
1.90 - @Override
1.91 - public boolean hasFinished()
1.92 - {
1.93 - return true;
1.94 - }
1.95 -
1.96 - @Override
1.97 - public String impliedCapability()
1.98 - {
1.99 - return null;
1.100 - }
1.101 -
1.102 - @Override
1.103 - public boolean isStateful()
1.104 - {
1.105 - return false;
1.106 - }
1.107 -
1.108 - @Override
1.109 - public void processLine(NNTPConnection conn, final String line, byte[] raw)
1.110 - throws IOException, StorageBackendException
1.111 - {
1.112 - if(conn.getCurrentChannel() == null)
1.113 - {
1.114 - conn.println("430 no group selected");
1.115 - return;
1.116 - }
1.117 -
1.118 - String[] command = line.split("\\p{Space}+");
1.119 -
1.120 - // There may be multiple patterns and Thunderbird produces
1.121 - // additional spaces between range and pattern
1.122 - if(command.length >= 4)
1.123 - {
1.124 - String header = command[1].toLowerCase(Locale.US);
1.125 - String range = command[2];
1.126 - String pattern = command[3];
1.127 -
1.128 - long start = -1;
1.129 - long end = -1;
1.130 - if(range.contains("-"))
1.131 - {
1.132 - String[] rsplit = range.split("-", 2);
1.133 - start = Long.parseLong(rsplit[0]);
1.134 - if(rsplit[1].length() > 0)
1.135 - {
1.136 - end = Long.parseLong(rsplit[1]);
1.137 - }
1.138 - }
1.139 - else // TODO: Handle Message-IDs
1.140 - {
1.141 - start = Long.parseLong(range);
1.142 - }
1.143 -
1.144 - try
1.145 - {
1.146 - List<Pair<Long, String>> heads = StorageManager.current().
1.147 - getArticleHeaders(conn.getCurrentChannel(), start, end, header, pattern);
1.148 -
1.149 - conn.println("221 header follows");
1.150 - for(Pair<Long, String> head : heads)
1.151 - {
1.152 - conn.println(head.getA() + " " + head.getB());
1.153 - }
1.154 - conn.println(".");
1.155 - }
1.156 - catch(PatternSyntaxException ex)
1.157 - {
1.158 - ex.printStackTrace();
1.159 - conn.println("500 invalid pattern syntax");
1.160 - }
1.161 - catch(StorageBackendException ex)
1.162 - {
1.163 - ex.printStackTrace();
1.164 - conn.println("500 internal server error");
1.165 - }
1.166 - }
1.167 - else
1.168 - {
1.169 - conn.println("430 invalid command usage");
1.170 - }
1.171 - }
1.172 -
1.173 -}