diff -r 6ae5e4f8329b -r c404a87db5b7 src/org/sonews/daemon/command/CapabilitiesCommand.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/org/sonews/daemon/command/CapabilitiesCommand.java Sun Aug 29 17:43:58 2010 +0200 @@ -0,0 +1,93 @@ +/* + * SONEWS News Server + * see AUTHORS for the list of contributors + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +package org.sonews.daemon.command; + +import java.io.IOException; +import org.sonews.daemon.NNTPConnection; + +/** + *
+ *  The CAPABILITIES command allows a client to determine the
+ *  capabilities of the server at any given time.
+ *
+ *  This command MAY be issued at any time; the server MUST NOT require
+ *  it to be issued in order to make use of any capability. The response
+ *  generated by this command MAY change during a session because of
+ *  other state information (which, in turn, may be changed by the
+ *  effects of other commands or by external events).  An NNTP client is
+ *  only able to get the current and correct information concerning
+ *  available capabilities at any point during a session by issuing a
+ *  CAPABILITIES command at that point of that session and processing the
+ *  response.
+ * 
+ * @author Christian Lins + * @since sonews/0.5.0 + */ +public class CapabilitiesCommand implements Command +{ + + static final String[] CAPABILITIES = new String[] + { + "VERSION 2", // MUST be the first one; VERSION 2 refers to RFC3977 + "READER", // Server implements commands for reading + "POST", // Server implements POST command + "OVER" // Server implements OVER command + }; + + @Override + public String[] getSupportedCommandStrings() + { + return new String[] {"CAPABILITIES"}; + } + + /** + * First called after one call to processLine(). + * @return + */ + @Override + public boolean hasFinished() + { + return true; + } + + @Override + public String impliedCapability() + { + return null; + } + + @Override + public boolean isStateful() + { + return false; + } + + @Override + public void processLine(NNTPConnection conn, final String line, byte[] raw) + throws IOException + { + conn.println("101 Capabilities list:"); + for(String cap : CAPABILITIES) + { + conn.println(cap); + } + conn.println("."); + } + +}