Question

我正在尝试编写一个Java程序来查询用户的密码。我面临的困难是，此Java程序是使用systemd服务启动的。

我知道systemd服务是要非交互式运行的。我正在尝试破解它。

我正在阅读有关Java中ProcessBuilder来调用systemd-ask-password命令的信息。

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.command("/bin/echo", "Hello", " world...");  <---- This WORKED as expected

        pb.inheritIO();
        Process p = pb.start();


        int exitCode = p.waitFor();
        assert exitCode == 0;
        System.out.println(exitCode);
    }
}

当我开始使用systemd时，得到以下journalctl日志。我没有提示输入密码。

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

是否可以从使用systemd服务启动的Java程序中以交互方式查询密码？

在服务启动期间查询密码的Java程序

0 个答案: