org.argeo.slc.support/src/org/argeo/slc/jsch/GetMachineId.java

   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 }