1 package org.argeo.slc.jsch;
2
3 import java.net.URL;
4 import java.util.ArrayList;
5 import java.util.List;
6
7 import javax.security.auth.Subject;
8 import javax.security.auth.login.LoginContext;
9
10 class GetMachineId {
11
12 public static void main(String[] args) {
13 URL url = GetMachineId.class.getResource("jaas.cfg");
14 System.setProperty("java.security.auth.login.config", url.toExternalForm());
15
16 String hostname = args[0];
17 try {
18 LoginContext lc = new LoginContext("SINGLE_USER");
19 lc.login();
20
21 SshTarget sshTarget = new SshTarget();
22 sshTarget.setHost(hostname);
23 RemoteExec remoteExec = new RemoteExec();
24 remoteExec.setCommand("cat /etc/machine-id");
25 remoteExec.setSshTarget(sshTarget);
26 List<String> lines = new ArrayList<>();
27 remoteExec.setStdOutLines(lines);
28
29 Subject.doAs(lc.getSubject(), remoteExec.asPrivilegedAction());
30
31 String machineId = lines.get(0);
32 System.out.println(hostname + ": " + machineId);
33 } catch (Exception e) {
34 e.printStackTrace();
35 }
36
37 }
38
39 }