Add ghidra.app.script.GhidraScript println, printf, printerr methods to Python built-in scope

[hoanghai27]

I need to use the println function to log messages when running headless mode but I see that Ghidrathon is ignoring it. Why is that? Can you support it?

>>> println
Traceback (most recent call last):
  File "/home/user/.ghidra/.ghidra_11.0.1_PUBLIC/Extensions/Ghidrathon/data/python/jepeval.py", line 74, in jepeval
    more_input_needed = _jepeval(line)
                        ^^^^^^^^^^^^^^
  File "/home/user/.ghidra/.ghidra_11.0.1_PUBLIC/Extensions/Ghidrathon/data/python/jepeval.py", line 49, in _jepeval
    exec(compile(line, "<string>", "single"), globals(), globals())
  File "<string>", line 1, in <module>
NameError: name 'println' is not defined

https://github.com/mandiant/Ghidrathon/blob/91c0cab3ecdd01ec3327d577cc5e0b4e31a384ae/data/python/jepwrappers.py#L285C29-L285C34

[mike-hunhoff]

Thanks for reaching out @hoanghai27 . This specific line of code prevents overwriting Python's print function but you're correct that we should, if possible, add ghidra.app.script.GhidraScript's print* methods (println, printf, printerr). I limited these methods initially because Ghidrathon has to wire the Python interpreter's stdout, stderr to the JVM's stdout, stderr and additional testing would be needed to ensure the additional methods function as expected after the wiring is configured.

In the mean time, are you able to use the print method for your needs here?

[hoanghai27]

Thanks for your feedback, I tried removing those two lines and found that both python's print function and Ghidra's println function work fine on both Ghidrathon console and scripts.

[Ephraim67]

Hi @mike-hunhoff, I'd be happy to help with this issue. Let me know if it has been assigned to someone else.

[mike-hunhoff]

Hi @Ephraim67 we're not actively working this project at the moment. While you're welcome to work on this issue, I can't make promises for when we'll get around to reviewing, approving, and merging your PR.