78 lines
2.5 KiB
Python
78 lines
2.5 KiB
Python
import os
|
|
from os import path
|
|
import re
|
|
import sys
|
|
import macresources
|
|
|
|
from .slow_lzss import decompress
|
|
|
|
from . import dispatcher
|
|
from . import cfrg_rsrc
|
|
|
|
|
|
# Special case: expects a (data, resource_list) tuple
|
|
def dump(binary, dest_dir):
|
|
if not isinstance(binary, tuple): raise dispatcher.WrongFormat
|
|
binary, rsrc = binary
|
|
if not binary.startswith(b'<CHRP-BOOT>'): raise dispatcher.WrongFormat
|
|
|
|
os.makedirs(dest_dir, exist_ok=True)
|
|
|
|
a, b, c = binary.partition(b'</CHRP-BOOT>')
|
|
chrp_boot = a + b
|
|
if c.startswith(b'\r'): chrp_boot += b'\r'
|
|
|
|
chrp_boot = chrp_boot.replace(b'\r', b'\n')
|
|
|
|
# find the build-specific hex, and write out a clean version of the script
|
|
chrp_boot_zeroed = bytearray(chrp_boot)
|
|
constants = dict()
|
|
for m in re.finditer(rb'h#\s+([A-Fa-f0-9]+)\s+constant\s+([-\w]+)', chrp_boot):
|
|
key = m.group(2).decode('ascii')
|
|
val = int(m.group(1), 16)
|
|
constants[key] = val
|
|
|
|
if key != 'elf-offset':
|
|
for i in range(*m.span(1)):
|
|
chrp_boot_zeroed[i:i+1] = b'0'
|
|
|
|
with open(path.join(dest_dir, 'Bootscript'), 'wb') as f:
|
|
f.write(chrp_boot_zeroed)
|
|
|
|
if 'elf-offset' in constants:
|
|
elf = binary[constants['elf-offset']:][:constants['elf-size']]
|
|
dispatcher.dump(elf, path.join(dest_dir, 'MacOS.elf'))
|
|
|
|
other_offset = constants.get('lzss-offset', constants.get('parcels-offset'))
|
|
other_size = constants.get('lzss-size', constants.get('parcels-size'))
|
|
parcels = binary[other_offset:][:other_size]
|
|
|
|
if parcels.startswith(b'prcl'):
|
|
filename = 'Parcels'
|
|
else:
|
|
filename = 'MacROM'
|
|
parcels = decompress(parcels)
|
|
|
|
dispatcher.dump(parcels, path.join(dest_dir, filename))
|
|
|
|
# Lastly, dump the System Enabler (if present and rsrc fork not stripped)
|
|
if rsrc:
|
|
cfrgs = [r for r in rsrc if r.type == b'cfrg']
|
|
|
|
start, stop = cfrg_rsrc.get_dfrk_range([c.data for c in cfrgs], len(binary))
|
|
|
|
for c in cfrgs:
|
|
c.data = cfrg_rsrc.adjust_dfrkoffset_fields(c.data, -start)
|
|
|
|
with open(path.join(dest_dir, 'SysEnabler'), 'wb') as f:
|
|
f.write(binary[start:stop])
|
|
|
|
with open(path.join(dest_dir, 'SysEnabler.rdump'), 'wb') as f:
|
|
f.write(macresources.make_rez_code(rsrc, ascii_clean=True))
|
|
|
|
with open(path.join(dest_dir, 'SysEnabler.idump'), 'wb') as f:
|
|
f.write(b'gblyMACS')
|
|
|
|
elif b'Joy!' in binary[other_offset+other_size:]:
|
|
print('Resource fork missing, ignoring orphaned data fork PEFs', file=sys.stderr)
|