bluseliu50
4e61886d7d
The checks guarded a local development disk floor and do not belong in the shared scripts. The scratch image capacity check in prepare-air-nir-diagnostic.py is kept because it validates a mounted image, not the host disk.
57 lines
2.5 KiB
Python
Executable File
57 lines
2.5 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Inspect a local restore image without extracting its root filesystem."""
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import argparse
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import hashlib
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import json
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from pathlib import Path
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import plistlib
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import shutil
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import zipfile
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def inspect(path, extract=False, output=Path('.cache/firmware')):
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with zipfile.ZipFile(path) as archive:
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manifest = plistlib.loads(archive.read('BuildManifest.plist'))
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if 'iPad7,1' not in manifest['SupportedProductTypes']:
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raise ValueError('IPSW does not support iPad7,1')
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if not manifest['ProductVersion'].startswith('17.'):
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raise ValueError('IPSW is not iPadOS 17')
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identity = next(b for b in manifest['BuildIdentities']
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if b['Info']['DeviceClass'] == 'j120ap'
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and b['Info']['RestoreBehavior'] == 'Erase')
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report = {
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'version': manifest['ProductVersion'],
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'build': manifest['ProductBuildVersion'],
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'products': manifest['SupportedProductTypes'],
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'board': identity['Info']['DeviceClass'],
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'chip_id': identity['ApChipID'],
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'board_id': identity['ApBoardID'],
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'components': {},
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}
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names = {kind: identity['Manifest'][kind]['Info']['Path']
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for kind in ('KernelCache', 'DeviceTree', 'RestoreRamDisk', 'OS')}
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needed = sum(archive.getinfo(names[k]).file_size
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for k in ('KernelCache', 'DeviceTree'))
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for kind, name in names.items():
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entry = {'member': name, 'size': archive.getinfo(name).file_size}
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if kind in ('KernelCache', 'DeviceTree'):
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data = archive.read(name)
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entry['sha256'] = hashlib.sha256(data).hexdigest()
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entry['magic_hex'] = data[:16].hex()
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if extract:
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output.mkdir(parents=True, exist_ok=True)
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destination = output / Path(name).name
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destination.write_bytes(data)
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entry['extracted'] = destination.as_posix()
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report['components'][kind] = entry
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return report
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument('ipsw', type=Path)
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parser.add_argument('--extract', action='store_true')
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parser.add_argument('--output', type=Path, default=Path('.cache/firmware'))
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args = parser.parse_args()
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print(json.dumps(inspect(args.ipsw, args.extract, args.output), indent=2))
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