[systemd-devel] Java program that prompts password using systemd service

[Dinesh Prasanth Moluguwan Krishnamoorthy]

Hi,

I'm trying to write a Java program that queries user for password. The
difficulty I'm facing is, this java program is started using `systemd`
service. 

I'm aware that `systemd` services are meant to run non-interactively.
I'm trying to change it based on my program's need.

I was reading about `ProcessBuilder` in Java to invoke `systemd-ask-
password` command.


    public static void main(String arg[]) {
    		try {
    			ProcessBuilder pb = new
ProcessBuilder();//  padd user nuxwdog:internalDB mkdtest1 @u"});
    			pb.command("/bin/bash", "-c", "systemd-ask-
password internaldb: --no-output");

    			pb.inheritIO();
    			Process p = pb.start();
    			
    			
    			int exitCode = p.waitFor();
    			assert exitCode == 0;
    			System.out.println(exitCode);
            }
    }

I get the following `journalctl` logs when I start using systemd. I'm
not prompted for password.

    Nov 27 18:25:35 localhost.localdomain systemd[1]: Stopping 
pki-tomcatd-nuxwdog at pki-tomcat.service...
    Nov 27 18:25:35 localhost.localdomain java[7034]: 143
    Nov 27 18:25:35 localhost.localdomain systemd[1]: 
pki-tomcatd-nuxwdog at pki-tomcat.service: Main process exited,
code=exited, status=143/n/a
    Nov 27 18:25:35 localhost.localdomain systemd[1]: 
pki-tomcatd-nuxwdog at pki-tomcat.service: Failed with result 'exit-code'.
    Nov 27 18:25:35 localhost.localdomain systemd[1]: Stopped 
pki-tomcatd-nuxwdog at pki-tomcat.service.
    Nov 27 18:25:35 localhost.localdomain systemd[1]: Started 
pki-tomcatd-nuxwdog at pki-tomcat.service.

Is there a way to query a password interactively from a Java program
started using a systemd service?


Thanks,
Dinesh