chris@1: /* chris@1: * SONEWS News Server chris@1: * see AUTHORS for the list of contributors chris@1: * chris@1: * This program is free software: you can redistribute it and/or modify chris@1: * it under the terms of the GNU General Public License as published by chris@1: * the Free Software Foundation, either version 3 of the License, or chris@1: * (at your option) any later version. chris@1: * chris@1: * This program is distributed in the hope that it will be useful, chris@1: * but WITHOUT ANY WARRANTY; without even the implied warranty of chris@1: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the chris@1: * GNU General Public License for more details. chris@1: * chris@1: * You should have received a copy of the GNU General Public License chris@1: * along with this program. If not, see . chris@1: */ chris@1: chris@1: package org.sonews.daemon.command; chris@1: chris@1: import java.io.IOException; chris@1: import org.sonews.daemon.NNTPConnection; chris@1: chris@1: /** chris@1: *
chris@1:  * The CAPABILITIES command allows a client to determine the
chris@1:  * capabilities of the server at any given time.
chris@1:  *
chris@1:  * This command MAY be issued at any time; the server MUST NOT require
chris@1:  * it to be issued in order to make use of any capability. The response
chris@1:  * generated by this command MAY change during a session because of
chris@1:  * other state information (which, in turn, may be changed by the
chris@1:  * effects of other commands or by external events).  An NNTP client is
chris@1:  * only able to get the current and correct information concerning
chris@1:  * available capabilities at any point during a session by issuing a
chris@1:  * CAPABILITIES command at that point of that session and processing the
chris@1:  * response.
chris@1:  * 
chris@1: * @author Christian Lins chris@1: * @since sonews/0.5.0 chris@1: */ chris@3: public class CapabilitiesCommand implements Command chris@1: { chris@1: chris@3: static final String[] CAPABILITIES = new String[] chris@1: { chris@1: "VERSION 2", // MUST be the first one; VERSION 2 refers to RFC3977 chris@1: "READER", // Server implements commands for reading chris@1: "POST", // Server implements POST command chris@1: "OVER" // Server implements OVER command chris@1: }; chris@3: chris@3: @Override chris@3: public String[] getSupportedCommandStrings() chris@1: { chris@3: return new String[] {"CAPABILITIES"}; chris@1: } chris@1: chris@1: /** chris@1: * First called after one call to processLine(). chris@1: * @return chris@1: */ chris@1: @Override chris@1: public boolean hasFinished() chris@1: { chris@1: return true; chris@1: } chris@1: chris@1: @Override chris@3: public boolean isStateful() chris@3: { chris@3: return false; chris@3: } chris@3: chris@3: @Override chris@3: public void processLine(NNTPConnection conn, final String line, byte[] raw) chris@1: throws IOException chris@1: { chris@3: conn.println("101 Capabilities list:"); chris@1: for(String cap : CAPABILITIES) chris@1: { chris@3: conn.println(cap); chris@1: } chris@3: conn.println("."); chris@1: } chris@1: chris@1: }