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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/*******************************************************************************
* Copyright (c) 2011, 2017 SAP AG
* 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
*******************************************************************************/
package org.eclipse.equinox.console.ssh;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.felix.service.command.CommandProcessor;
import org.apache.sshd.server.Command;
import org.apache.sshd.server.Environment;
import org.apache.sshd.server.ExitCallback;
import org.eclipse.equinox.console.common.KEYS;
import org.eclipse.equinox.console.common.terminal.ANSITerminalTypeMappings;
import org.eclipse.equinox.console.common.terminal.SCOTerminalTypeMappings;
import org.eclipse.equinox.console.common.terminal.TerminalTypeMappings;
import org.eclipse.equinox.console.common.terminal.VT100TerminalTypeMappings;
import org.eclipse.equinox.console.common.terminal.VT220TerminalTypeMappings;
import org.eclipse.equinox.console.common.terminal.VT320TerminalTypeMappings;
import org.osgi.framework.BundleContext;
/**
* This class manages a ssh connection. It is responsible for starting a sessions to execute commands
* from the ssh. If there are multiple CommandProcessors, a session is started for each of them.
*
*/
public class SshShell implements Command {
private List<CommandProcessor> processors;
private BundleContext context;
private InputStream in;
private OutputStream out;
private ExitCallback callback;
private Map<CommandProcessor, SshSession> commandProcessorToConsoleThreadMap = new HashMap<>();
private final Map<String, TerminalTypeMappings> supportedEscapeSequences;
private static final String DEFAULT_TTYPE = File.separatorChar == '/' ? "XTERM" : "ANSI";
private TerminalTypeMappings currentMappings;
private Map<String, KEYS> currentEscapesToKey;
private static final String TERMINAL_PROPERTY = "TERM";
public SshShell(List<CommandProcessor> processors, BundleContext context) {
this.processors = processors;
this.context = context;
supportedEscapeSequences = new HashMap<> ();
supportedEscapeSequences.put("ANSI", new ANSITerminalTypeMappings());
supportedEscapeSequences.put("WINDOWS", new ANSITerminalTypeMappings());
supportedEscapeSequences.put("VT100", new VT100TerminalTypeMappings());
VT220TerminalTypeMappings vtMappings = new VT220TerminalTypeMappings();
supportedEscapeSequences.put("VT220", vtMappings);
supportedEscapeSequences.put("XTERM", vtMappings);
supportedEscapeSequences.put("VT320", new VT320TerminalTypeMappings());
supportedEscapeSequences.put("SCO", new SCOTerminalTypeMappings());
currentMappings = supportedEscapeSequences.get(DEFAULT_TTYPE);
currentEscapesToKey = currentMappings.getEscapesToKey();
}
@Override
public void setInputStream(InputStream in) {
this.in = in;
}
@Override
public void setOutputStream(OutputStream out) {
this.out = out;
}
@Override
public void setErrorStream(OutputStream err) {
// do nothing
}
@Override
public void setExitCallback(ExitCallback callback) {
this.callback = callback;
}
@Override
public synchronized void start(Environment env) throws IOException {
String term = env.getEnv().get(TERMINAL_PROPERTY);
TerminalTypeMappings mapping = supportedEscapeSequences.get(term.toUpperCase());
if(mapping != null) {
currentMappings = mapping;
currentEscapesToKey = mapping.getEscapesToKey();
}
for (CommandProcessor processor : processors) {
createNewSession(processor);
}
}
public synchronized void addCommandProcessor(CommandProcessor processor) {
createNewSession(processor);
}
public synchronized void removeCommandProcessor(CommandProcessor processor) {
Thread consoleSession = commandProcessorToConsoleThreadMap.get(processor);
if (consoleSession != null) {
consoleSession.interrupt();
}
}
private void createNewSession(CommandProcessor processor) {
SshSession consoleSession = startNewConsoleSession(processor);
commandProcessorToConsoleThreadMap.put(processor, consoleSession);
}
@Override
public void destroy() {
return;
}
public void onExit() {
if (commandProcessorToConsoleThreadMap.values() != null) {
for (Thread consoleSession : commandProcessorToConsoleThreadMap.values()) {
consoleSession.interrupt();
}
}
callback.onExit(0);
}
public void removeSession(SshSession session) {
CommandProcessor processorToRemove = null;
for (java.util.Map.Entry<CommandProcessor, SshSession> entry : commandProcessorToConsoleThreadMap.entrySet()) {
CommandProcessor processor = entry.getKey();
if (session.equals(entry.getValue())) {
processorToRemove = processor;
break;
}
}
if (processorToRemove != null) {
commandProcessorToConsoleThreadMap.remove(processorToRemove);
}
if (commandProcessorToConsoleThreadMap.size() == 0) {
onExit();
}
}
private SshSession startNewConsoleSession(CommandProcessor processor) {
SshSession consoleSession = new SshSession(processor, context, this, in, out, currentMappings, currentEscapesToKey);
consoleSession.start();
return consoleSession;
}
}
|
