Solved How do I exactly write into the Bukkit process?

I'm currently writing a wrapper for Bukkit so that it supports a rcon-like login system (i.e it contains user-password authentication, encrypted streams). However, when I attempt to write into the process (via Process.getOutputStream()) it does nothing. I've already tried tinkering with the server start up parameters by doing --nojline and the UnsupportedTerminal hack, but nothing's worked so far. I'm assuming the reason why is because ANSI skips System.in and goes directly to JNI/native methods or something, but I'm not quite sure.

Anyone have a working method to writing to the Bukkit console thru Process.getOutputStream()?

I realize this might be in the wrong section (this being a wrapper and the board subject is plugins) so if it is, you're free to shift this thread around. I posted it under PD because I felt that it might require a plugin add-in to act as the executor (i.e client -> wrapper -> plugin -> run command as console).

 

This seems like an interesting bit of information:

Can you show relevant code?

 

Code:java

                     try{
                        socket.receive(recv);
                        Logger.getLogger("debug").info("Got packet");
                        String command = new String(recv.getData(), Wrapper.UTF8).substring(0, recv.getLength());
                        Logger.getLogger("debug").info("Running command " + command);
                        outputStream.println(command + '\n');
                    } catch (IOException e){
                        e.printStackTrace();
                    }

Where outputStream is Process.getOutputStream(). It does not throw an IOException because I never see any stacktrace.

Ignore the silly getLogger() calls; I couldn't do System.out since I replace it with my own and it strangely causes a StackOverflow.

 

How did you even get the process anyways?

 

Code:java

 ProcessBuilder builder = new ProcessBuilder(serverArguments);
builder.redirectInput(ProcessBuilder.Redirect.INHERIT);
 
try{
Process process = builder.start();

Where server arguments contains:

Code:java

 serverArguments.addAll(0, Arrays.asList("java", "-jar"));
serverArguments.addAll(serverArguments.size(), Arrays.asList(serverJar.getAbsolutePath(), "--nojline"));

Remember, it's a wrapper, not an external application lol

 

Cirno
Try redirecting the output

 

What do you mean by redirecting the output?
I probably worded the post funny; I want to basically write into the subprocesses System.in so that I don't need to write a plugin to carry the command over to getConsoleSender(). However, when testing it, it doesn't work flat out; no errors, no exceptions, nothing.

derp this part made no sense; reword later

 

Use inheritIO() in ProcessBuilder, it should redirect both the input/output steams to the current one.

 

You know what?
I'm an idiot. A complete damned idiot. It was because I was making the subprocess inherit the wrapper's input, and thus, there technically was no output because I would need to write into my own processes System.in somehow...

That statement was also probably confusing.
tl;dr I called the wrong thing at the wrong time, and it caused this mess.

Solved. Thanks for helping (cause if you didn't mention the whole inheritIO() thing, I would've never noticed it lol)

 

Glad I could help.