74 lines
2.0 KiB
Python
74 lines
2.0 KiB
Python
import numpy as np
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import logging
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log = logging.getLogger(__name__)
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magic = [
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{'mime': "application/vnd.atari8bit.atr.getaway_pd",
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'name': "Getaway Public Domain ATR",
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'signature': [
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(slice(8, 10), [0x82, 0x39]),
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(slice(12, 16), [0x67, 0x21, 0x70, 0x64]),
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],
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},
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{'mime': "application/vnd.atari8bit.xex.getaway",
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'name': "Getaway XEX",
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'signature': [
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(slice(0, 6), [0xff, 0xff, 0x80, 0x2a, 0xff, 0x8a]),
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],
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},
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{'mime': "application/vnd.atari8bit.atr.getaway",
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'name': "Getaway ATR",
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'signature': [
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(slice(0x10, 0x19), [0x00, 0xc1, 0x80, 0x0f, 0xcc, 0x22, 0x18, 0x60, 0x0e]),
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],
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},
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{'mime': "application/vnd.atari8bit.atr.jumpman_level_tester",
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'name': "Jumpman Level Tester from Omnivore",
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'signature': [
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(slice(0, 5), [0x96, 0x02 , 0xd0 , 0x05 , 0x80]),
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(0x0196 + 0x3f, 0x4c),
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(0x0196 + 0x48, 0x20),
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(0x0196 + 0x4b, 0x60),
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(0x0196 + 0x4c, 0xff),
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],
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},
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{'mime': "application/vnd.atari8bit.atr.jumpman",
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'name': "Jumpman",
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'signature': [
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(slice(0, 5), [0x96, 0x02 , 0x80 , 0x16 , 0x80]),
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(0x0810 + 0x3f, 0x4c),
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(0x0810 + 0x48, 0x20),
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(0x0810 + 0x4b, 0x60),
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(0x0810 + 0x4c, 0xff),
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],
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},
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]
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def check_signature(raw, sig):
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for index, expected in sig:
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actual = raw.data[index].tolist()
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if actual == expected:
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log.debug(" match at %s: %s" % (str(index), str(expected)))
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if actual != expected:
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log.debug(" failed at %s: %s != %s" % (str(index), str(expected), str(raw.data[index])))
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return False
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return True
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def guess_detail_for_mime(mime, raw, parser):
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for entry in magic:
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if entry['mime'].startswith(mime):
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log.debug("checking entry for %s" % entry['mime'])
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if check_signature(raw, entry['signature']):
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log.debug("found match: %s" % entry['name'])
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return entry['mime']
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return mime
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