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struct.error: unpack requires a buffer of 3714449519 bytes

See original GitHub issue

When running unityextract with ./bin/unityextract --audio -o out/audio2 /d/Games/Hearthstone/Data/Win/*.unity3d, I have the following stack trace:

Traceback (most recent call last):
  File "./bin/unityextract", line 159, in <module>
    main()
  File "./bin/unityextract", line 155, in main
    exit(app.run())
  File "./bin/unityextract", line 57, in run
    self.handle_asset(asset)
  File "./bin/unityextract", line 83, in handle_asset
    if obj.type not in self.handle_formats:
  File "C:\Users\Daedin\AppData\Local\Programs\Python\Python36\lib\site-packages\unitypack-0.9.0-py3.6.egg\unitypack\object.py", line 30, in type
    script = self.read()["m_Script"]
  File "C:\Users\Daedin\AppData\Local\Programs\Python\Python36\lib\site-packages\unitypack-0.9.0-py3.6.egg\unitypack\object.py", line 84, in read
    return self.read_value(self.type_tree, BinaryReader(BytesIO(object_buf)))
  File "C:\Users\Daedin\AppData\Local\Programs\Python\Python36\lib\site-packages\unitypack-0.9.0-py3.6.egg\unitypack\object.py", line 149, in read_value
    result[child.name] = self.read_value(child, buf)
  File "C:\Users\Daedin\AppData\Local\Programs\Python\Python36\lib\site-packages\unitypack-0.9.0-py3.6.egg\unitypack\object.py", line 149, in read_value
    result[child.name] = self.read_value(child, buf)
  File "C:\Users\Daedin\AppData\Local\Programs\Python\Python36\lib\site-packages\unitypack-0.9.0-py3.6.egg\unitypack\object.py", line 118, in read_value
    result = buf.read_string(size)
  File "C:\Users\Daedin\AppData\Local\Programs\Python\Python36\lib\site-packages\unitypack-0.9.0-py3.6.egg\unitypack\utils.py", line 70, in read_string
    ret = struct.unpack(self.endian + "%is" % (size), self.read(size))[0]
struct.error: unpack requires a buffer of 3714449519 bytes

This looked similar to https://github.com/HearthSim/UnityPack/issues/23, and I tried to re-clone unitypack and reinstall from scratch, but the issue still persists.

Do you have any idea how to fix this?

Issue Analytics

State:
Created 4 years ago
Comments:6

Top GitHub Comments

1reaction

nanoNagocommented, Jan 10, 2020

Seeing the same in another Unity project. It appears that although the asset metadata is parsed correctly, the type/tree information and/or the actual object reading function is not functioning correctly, and the actual data of the object is not correctly understood.

Haven’t discovered the root cause yet, but I’m looking into it (very slowly). If anyone wants to get in touch to debug and discuss improvements, I’d love to get in touch so we can make some improvements to unitypack.

0reactions

sebastientrompcommented, Jan 23, 2020

This looks solved now. So either one of the recent commits fixed it, or the last Hearthstone update did