mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-18 18:06:40 +00:00
35 lines
1 KiB
Python
35 lines
1 KiB
Python
#!/usr/bin/env python
|
|
import sys, lz4, hashlib
|
|
from struct import unpack as up, pack as pk
|
|
|
|
def lz4_compress(data):
|
|
try:
|
|
import lz4.block as block
|
|
except ImportError:
|
|
block = lz4.LZ4_compress
|
|
return block.compress(data, 'high_compression', store_size=False)
|
|
|
|
def read_file(fn):
|
|
with open(fn, 'rb') as f:
|
|
return f.read()
|
|
|
|
def get_overlay(program, i):
|
|
return program[0x2B000 + 0x14000 * i:0x2B000 + 0x14000 * (i+1)]
|
|
|
|
def main(argc, argv):
|
|
if argc != 3:
|
|
print('Usage: %s in out' % argv[0])
|
|
return 1
|
|
data = read_file(argv[1])
|
|
erista_mtc = get_overlay(data, 1)
|
|
mariko_mtc = get_overlay(data, 2)
|
|
erista_hsh = hashlib.sha256(erista_mtc[:-4]).digest()[:4]
|
|
mariko_hsh = hashlib.sha256(mariko_mtc[:-4]).digest()[:4]
|
|
fusee_program = lz4_compress(data[:0x2B000 - 8] + erista_hsh + mariko_hsh + get_overlay(data, 0)[:0x11000])
|
|
with open(argv[2], 'wb') as f:
|
|
f.write(fusee_program)
|
|
|
|
return 0
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main(len(sys.argv), sys.argv))
|