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AMIAnalyzer: Fix this one weird pre-Color with MSB set on entrypoint date

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RichardG867
2023-01-12 21:18:15 -03:00
parent 9f2d37b5d4
commit a709bbca49
1 changed files with 4 additions and 2 deletions
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6
biostools/analyzers.py
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@@ -331,7 +331,8 @@ class AMIAnalyzer(Analyzer):
super().__init__('AMI', *args, **kwargs)
self._check_pattern = re.compile(b'''American Megatrends Inc|AMIBIOSC| Access Methods Inc\\.|AMI- ([0-9]{2}/[0-9]{2}/[0-9]{2}) (?:IBM is a TM of IBM|[\\x00-\\xFF]{2} AMI-[^-]+-BIOS )''')
self._date_pattern = re.compile(b'''([0-9]{2}/[0-9]{2}/[0-9]{2})[^0-9]''')
# Pre-Color entrypoint date can inexplicably have most significant bit set (two characters on arche_486_1989-1991), part 1
self._date_pattern = re.compile(b'''([0-9\\xB0-\\xB9]{2}/[0-9\\xB0-\\xB9]{2}/[0-9\\xB0-\\xB9]{2})[^0-9]''')
self._uefi_csm_pattern = re.compile('''63-0100-000001-00101111-[0-9]{6}-Chipset-0AAAA000$''')
# The "All Rights Reserved" is important to not catch the same header on other files.
# "All<Rights Reserved" (Tatung TCS-9850 9600x9, corrupted during production?)
@@ -523,7 +524,8 @@ class AMIAnalyzer(Analyzer):
self.debug_print('Pre-Color data start is unknown')
if match:
# Extract date as the version.
self.version = (match.group(1) or (match.group(2) + b'/' + match.group(3) + b'/' + match.group(4))).decode('cp437', 'ignore')
# Pre-Color entrypoint date can inexplicably have most significant bit set (two characters on arche_486_1989-1991), part 2
self.version = bytes((c & 0x7f) for c in (match.group(1) or (match.group(2) + b'/' + match.group(3) + b'/' + match.group(4)))).decode('cp437', 'ignore')
self.debug_print('Version (pre-Color):', self.version)
# Check pre-Color identification block.