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
|
// Copyright (C) 2009 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.sshd;
import com.google.gerrit.server.CurrentUser;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.assistedinject.Assisted;
import org.apache.sshd.server.CommandFactory.Command;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Map;
/**
* Command that dispatches to a subcommand from its command table.
*/
final class DispatchCommand extends BaseCommand {
interface Factory {
DispatchCommand create(String prefix, Map<String, Provider<Command>> map);
}
private final Provider<CurrentUser> currentUser;
private final String prefix;
private final Map<String, Provider<Command>> commands;
@Inject
DispatchCommand(final Provider<CurrentUser> cu, @Assisted final String pfx,
@Assisted final Map<String, Provider<Command>> all) {
currentUser = cu;
prefix = pfx;
commands = all;
}
@Override
public void start() throws IOException {
if (commandLine.isEmpty()) {
usage();
return;
}
final String name, args;
int sp = commandLine.indexOf(' ');
if (0 < sp) {
name = commandLine.substring(0, sp);
while (Character.isWhitespace(commandLine.charAt(sp))) {
sp++;
}
args = commandLine.substring(sp);
} else {
name = commandLine;
args = "";
}
if (name.equals("help") || name.equals("--help") || name.equals("-h")) {
usage();
return;
}
final Provider<Command> p = commands.get(name);
if (p != null) {
final Command cmd = p.get();
if (cmd.getClass().getAnnotation(AdminCommand.class) != null) {
final CurrentUser u = currentUser.get();
if (!u.isAdministrator()) {
err.write("fatal: Not a Gerrit administrator\n".getBytes(ENC));
err.flush();
onExit(1);
return;
}
}
provideStateTo(cmd);
if (cmd instanceof BaseCommand) {
final BaseCommand bc = (BaseCommand) cmd;
if (commandPrefix.isEmpty())
bc.setCommandPrefix(name);
else
bc.setCommandPrefix(commandPrefix + " " + name);
bc.setCommandLine(args);
}
cmd.start();
} else {
final String msg = prefix + ": " + name + ": not found\n";
err.write(msg.getBytes(ENC));
err.flush();
onExit(127);
}
}
private void usage() throws IOException, UnsupportedEncodingException {
final StringBuilder usage = new StringBuilder();
if (prefix.indexOf(' ') < 0) {
usage.append("usage: " + prefix + " COMMAND [ARGS]\n");
}
usage.append("\n");
usage.append("Available commands of " + prefix + " are:\n");
usage.append("\n");
for (Map.Entry<String, Provider<Command>> e : commands.entrySet()) {
usage.append(" ");
usage.append(e.getKey());
usage.append("\n");
}
usage.append("\n");
usage.append("See '");
if (prefix.indexOf(' ') < 0) {
usage.append(prefix);
usage.append(' ');
}
usage.append("COMMAND --help' for more information.\n");
usage.append("\n");
err.write(usage.toString().getBytes("UTF-8"));
err.flush();
onExit(1);
}
}
|
