mandiant/Ghidrathon

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

hoanghai27 opened this issue · 2 comments

hoanghai27 commented

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 commented

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 commented

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.

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