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https://github.com/Atmosphere-NX/Atmosphere.git
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38 lines
1.4 KiB
Python
38 lines
1.4 KiB
Python
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#!/usr/bin/env python
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import sys, os
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from struct import pack as pk, unpack as up
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def make_standard(exp):
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std = exp[:]
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_, metadata_offset, is_exp = up('<III', exp[:12])
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assert is_exp == 1
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# Patch the experimental flag to zero.
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std = std[:8] + pk('<I', 0) + std[12:]
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# Locate the mesosphere content header, patch to be experimental.
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magic, size, code_ofs, content_ofs, num_contents, ver, sup_ver, rev = up('<IIIIIIII', exp[metadata_offset:metadata_offset + 0x20])
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for i in range(num_contents):
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start, size, cnt_type, flag0, flag1, flag2, pad = up('<IIBBBBI', exp[content_ofs + 0x20 * i:content_ofs + 0x20 * i + 0x10])
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if cnt_type == 10: # CONTENT_TYPE_KRN
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assert exp[content_ofs + 0x20 * i + 0x10:content_ofs + 0x20 * i + 0x10 + len(b'mesosphere') + 1] == (b'mesosphere\x00')
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assert flag0 == 0 and flag1 == 0 and flag2 == 0
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std = std[:content_ofs + 0x20 * i] + pk('<IIBBBBI', start, size, cnt_type, flag0 | 0x1, flag1, flag2, pad) + std[content_ofs + 0x20 * i + 0x10:]
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return std
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def main(argc, argv):
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if argc != 3:
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print('Usage: %s input output' % argv[0])
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return 1
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with open(argv[1], 'rb') as f:
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experimental = f.read()
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with open(argv[2], 'wb') as f:
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f.write(make_standard(experimental))
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return 0
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if __name__ == '__main__':
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sys.exit(main(len(sys.argv), sys.argv))
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