001: /*
002: License $Id: Handler.java,v 1.5 2005/03/15 20:09:44 hendriks73 Exp $
003:
004: Copyright (c) 2001-2005 tagtraum industries.
005:
006: LGPL
007: ====
008:
009: jo! is free software; you can redistribute it and/or
010: modify it under the terms of the GNU Lesser General Public
011: License as published by the Free Software Foundation; either
012: version 2.1 of the License, or (at your option) any later version.
013:
014: jo! is distributed in the hope that it will be useful,
015: but WITHOUT ANY WARRANTY; without even the implied warranty of
016: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
017: Lesser General Public License for more details.
018:
019: You should have received a copy of the GNU Lesser General Public
020: License along with this library; if not, write to the Free Software
021: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
022:
023: For LGPL see <http://www.fsf.org/copyleft/lesser.txt>
024:
025:
026: Sun license
027: ===========
028:
029: This release contains software by Sun Microsystems. Therefore
030: the following conditions have to be met, too. They apply to the
031: files
032:
033: - lib/mail.jar
034: - lib/activation.jar
035: - lib/jsse.jar
036: - lib/jcert.jar
037: - lib/jaxp.jar
038: - lib/crimson.jar
039: - lib/servlet.jar
040: - lib/jnet.jar
041: - lib/jaas.jar
042: - lib/jaasmod.jar
043:
044: contained in this release.
045:
046: a. Licensee may not modify the Java Platform
047: Interface (JPI, identified as classes contained within the javax
048: package or any subpackages of the javax package), by creating additional
049: classes within the JPI or otherwise causing the addition to or modification
050: of the classes in the JPI. In the event that Licensee creates any
051: Java-related API and distribute such API to others for applet or
052: application development, you must promptly publish broadly, an accurate
053: specification for such API for free use by all developers of Java-based
054: software.
055:
056: b. Software is confidential copyrighted information of Sun and
057: title to all copies is retained by Sun and/or its licensors. Licensee
058: shall not modify, decompile, disassemble, decrypt, extract, or otherwise
059: reverse engineer Software. Software may not be leased, assigned, or
060: sublicensed, in whole or in part. Software is not designed or intended
061: for use in on-line control of aircraft, air traffic, aircraft navigation
062: or aircraft communications; or in the design, construction, operation or
063: maintenance of any nuclear facility. Licensee warrants that it will not
064: use or redistribute the Software for such purposes.
065:
066: c. Software is provided "AS IS," without a warranty
067: of any kind. ALL EXPRESS OR IMPLIED REPRESENTATIONS AND WARRANTIES,
068: INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
069: PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.
070:
071: d. This License is effective until terminated. Licensee may
072: terminate this License at any time by destroying all copies of Software.
073: This License will terminate immediately without notice from Sun if Licensee
074: fails to comply with any provision of this License. Upon such termination,
075: Licensee must destroy all copies of Software.
076:
077: e. Software, including technical data, is subject to U.S.
078: export control laws, including the U.S. Export Administration Act and its
079: associated regulations, and may be subject to export or import regulations
080: in other countries. Licensee agrees to comply strictly with all such
081: regulations and acknowledges that it has the responsibility to obtain
082: licenses to export, re-export, or import Software. Software may not be
083: downloaded, or otherwise exported or re-exported (i) into, or to a national
084: or resident of, Cuba, Iraq, Iran, North Korea, Libya, Sudan, Syria or any
085: country to which the U.S. has embargoed goods; or (ii) to anyone on the
086: U.S. Treasury Department's list of Specially Designated Nations or the U.S.
087: Commerce Department's Table of Denial Orders.
088:
089:
090: Feedback
091: ========
092:
093: We encourage your feedback and suggestions and want to use your feedback to
094: improve the Software. Send all such feedback to:
095: <feedback@tagtraum.com>
096:
097: For more information on tagtraum industries and jo!
098: please see <http://www.tagtraum.com/>.
099:
100:
101: */
102: package com.tagtraum.metaserver;
103:
104: import com.tagtraum.framework.log.Log;
105:
106: import java.io.*;
107: import java.net.Socket;
108: import java.util.StringTokenizer;
109:
110: /**
111: * Realisiert einen sehr simplen Admin-Service.<br>
112: * Dieser Admin-Service ist <b>nicht sicher</b>. Er schützt
113: * nicht sicher gegen unbefugten Zugriff.
114: *
115: * TODO: Translate comments to English.
116: *
117: * @author Hendrik Schreiber
118: * @version 1.1beta1 $Id: Handler.java,v 1.5 2005/03/15 20:09:44 hendriks73 Exp $
119: */
120: public class Handler extends com.tagtraum.framework.server.TCPHandler {
121:
122: /**
123: * Source-Version
124: */
125: public static String vcid = "$Id: Handler.java,v 1.5 2005/03/15 20:09:44 hendriks73 Exp $";
126:
127: /**
128: * ThreadGroup-constructor.
129: */
130: public Handler(ThreadGroup tg) {
131: super (tg);
132: }
133:
134: /**
135: * Herzstück des Protokolls. Zunächst wird über die Methode
136: * {@link MetaServer#isValidAddress(java.net.InetAddress)} festgestellt,
137: * ob der Connect von einer priviligierten Adresse aus erfolgt.
138: * Ist dies nicht der Fall, erscheint eine Fehlermeldung und die
139: * Verbindung wird unterbrochen. Ist dies jedoch der Fall, erscheint
140: * eine Willkommensmeldung. Der Client kann nun Befehle absetzen.<br>
141: * Es gibt dabei nur drei Befehle:
142: * <ul>
143: * <li>exit
144: * <li>start <servicename>
145: * <li>stop <servicename>
146: * </ul>
147: * <code>servicename</code> gibt dabei den Namen eines Services
148: * an, der in der Datei <code>services.cfg</code> enthalten ist.
149: * der AdminService kann mit <code>stop AdminService</code>
150: * gestoppt werden. dabei werden auch alle anderen Services
151: * gestoppt.
152: */
153: public void service() {
154: MetaServer service = (MetaServer) getService();
155:
156: try {
157: Socket aSocket = getSocket();
158: PrintWriter out = new PrintWriter(new OutputStreamWriter(
159: aSocket.getOutputStream()), true);
160:
161: if (!service.isValidAddress(aSocket.getInetAddress())) {
162: out.println("You are not allowed to log in.");
163: } else {
164: out.println("Welcome to " + service.getName() + " "
165: + service.getMajorVersion() + "."
166: + service.getMinorVersion());
167: usage(out);
168:
169: String line;
170: BufferedReader in = new BufferedReader(
171: new InputStreamReader(aSocket.getInputStream()));
172:
173: while ((line = in.readLine()) != null) {
174: if (Log.isLog(service.getName())) {
175: Log.getLog(service.getName()).log(line);
176: }
177:
178: StringTokenizer st = new StringTokenizer(line, " ");
179: int count = st.countTokens();
180:
181: if (count == 0) {
182: continue;
183: }
184:
185: if (count == 1 && line.toLowerCase().equals("exit")) {
186: out.println("Have a nice day!");
187:
188: return;
189: } else if (count == 2) {
190: String command = st.nextToken().toLowerCase();
191: String serviceName = st.nextToken();
192:
193: try {
194: if (command.equals("start")) {
195: service.startService(serviceName);
196: out.println("Service " + serviceName
197: + " started.");
198: } else if (command.equals("stop")) {
199: service.stopService(serviceName);
200: out.println("Service " + serviceName
201: + " stopped.");
202:
203: if (serviceName.equals(service
204: .getName())) {
205: out.println("Have a nice day!");
206:
207: return;
208: }
209: }
210: } catch (Exception se) {
211: out.println(se.toString());
212: }
213: } else {
214: usage(out);
215: }
216: }
217:
218: in.close();
219: }
220:
221: out.close();
222: } catch (IOException ioe) {
223: if (Log.isLog(service.getName())) {
224: Log.getLog(service.getName()).log(
225: "Exception during service: " + ioe.toString(),
226: Log.ERROR);
227: }
228: }
229: }
230:
231: /**
232: * Druckt den Usage-String.
233: *
234: * @param out PrintWriter mit dem die Ausgabe erfolgen soll.
235: */
236: public static void usage(PrintWriter out) {
237: out.println("Usage: exit | (start|stop) <servicename>");
238: }
239:
240: }
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