1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/*******************************************************************************
* Copyright (c) 2010, 2017 SAP AG and others
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Lazar Kirchev, SAP AG - initial API and implementation
* IBM Corporation - ongoing development
*******************************************************************************/
package org.eclipse.equinox.console.telnet;
import java.io.IOException;
import java.io.PrintStream;
import java.net.Socket;
import org.apache.felix.service.command.CommandProcessor;
import org.apache.felix.service.command.CommandSession;
import java.io.Closeable;
import org.eclipse.equinox.console.common.ConsoleInputHandler;
import org.eclipse.equinox.console.common.ConsoleInputScanner;
import org.eclipse.equinox.console.common.ConsoleInputStream;
import org.osgi.framework.BundleContext;
/**
* This class manages a telnet connection. It is responsible for wrapping the original io streams
* from the socket, and starting a CommandSession to execute commands from the telnet.
*
*/
public class TelnetConnection extends Thread implements Closeable {
private Socket socket;
private CommandProcessor processor;
private BundleContext context;
protected boolean isTelnetNegotiationFinished = false;
private Callback callback;
private static final long TIMEOUT = 1000;
private static final long NEGOTIATION_TIMEOUT = 60000;
private static final String PROMPT = "prompt";
private static final String OSGI_PROMPT = "osgi> ";
private static final String SCOPE = "SCOPE";
private static final String EQUINOX_SCOPE = "equinox:*";
private static final String CLOSEABLE = "CLOSEABLE";
public TelnetConnection (Socket socket, CommandProcessor processor, BundleContext context) {
this.socket = socket;
this.processor = processor;
this.context = context;
callback = new NegotiationFinishedCallback(this);
}
@Override
public void run() {
try {
ConsoleInputStream in = new ConsoleInputStream();
TelnetOutputStream out = new TelnetOutputStream(socket.getOutputStream());
out.autoSend();
TelnetInputHandler telnetInputHandler = new TelnetInputHandler(socket.getInputStream(), in, out, callback);
telnetInputHandler.start();
long start = System.currentTimeMillis();
synchronized (this) {
while (isTelnetNegotiationFinished == false && System.currentTimeMillis() - start < NEGOTIATION_TIMEOUT) {
try {
wait(TIMEOUT);
} catch (InterruptedException e) {
// do nothing
}
}
}
final CommandSession session;
PrintStream output = new PrintStream(out);
ConsoleInputStream inp = new ConsoleInputStream();
ConsoleInputHandler consoleInputHandler = new ConsoleInputHandler(in, inp, out);
consoleInputHandler.getScanner().setBackspace(telnetInputHandler.getScanner().getBackspace());
consoleInputHandler.getScanner().setDel(telnetInputHandler.getScanner().getDel());
consoleInputHandler.getScanner().setCurrentEscapesToKey(telnetInputHandler.getScanner().getCurrentEscapesToKey());
consoleInputHandler.getScanner().setEscapes(telnetInputHandler.getScanner().getEscapes());
((ConsoleInputScanner)consoleInputHandler.getScanner()).setContext(context);
consoleInputHandler.start();
session = processor.createSession(inp, output, output);
session.put(SCOPE, EQUINOX_SCOPE);
session.put(PROMPT, OSGI_PROMPT);
// Store this closeable object in the session, so that the disconnect command can close it
session.put(CLOSEABLE, this);
((ConsoleInputScanner)consoleInputHandler.getScanner()).setSession(session);
try {
session.execute("gosh --login --noshutdown");
} catch (Exception e) {
e.printStackTrace();
} finally {
session.close();
try {
socket.close();
}
catch (IOException e) {
// do nothing
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void close() {
try {
this.interrupt();
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public synchronized void telnetNegotiationFinished() {
isTelnetNegotiationFinished = true;
notify();
}
}
|
