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| import base64
import json
import os
import struct
import xml.etree.ElementTree as ET
import zlib
ce_base85_char_map = dict(
zip(
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!#$%()*+,-./:;=?@[]^_{}",
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~",
)
)
def decode_ce_base85(data):
return base64.b85decode("".join(ce_base85_char_map[v] for v in data))
def decrypt_ce_trainer(data):
for j in range(2, len(data)):
data[j] ^= data[j - 2]
for j in reversed(range(0, len(data) - 1)):
data[j] ^= data[j + 1]
key = 0xCE
for j in range(len(data)):
data[j] ^= key
key = (key + 1) & 0xFF
assert data[0:5].decode("ascii") == "CHEAT", "Invalid Trainer"
return zlib.decompress(data[5:], -zlib.MAX_WBITS)[4:]
def read_pascal_string(data, offset):
length = data[offset]
offset += 1
result = data[offset : offset + length].decode("ascii")
offset += length
return result, offset
def read_form_raw_data(data):
offset = 0
(data_length,) = struct.unpack_from("<I", data, offset)
offset += 4
assert data_length == (len(data) - offset), "Nope"
offset += 14
(data_length2,) = struct.unpack_from("<I", data, offset)
offset += 4
offset += 4
assert data_length2 == (len(data) - offset), "Nope"
return data[offset:]
def read_form_entry(data, offset):
field_type = data[offset]
offset += 1
result = None
if field_type == 2: # Byte
(result,) = struct.unpack_from("<B", data, offset)
offset += 1
elif field_type == 3: # Short
(result,) = struct.unpack_from("<H", data, offset)
offset += 2
elif field_type == 6: # String
result, offset = read_pascal_string(data, offset)
elif field_type == 7: # Enum
result, offset = read_pascal_string(data, offset)
elif field_type == 8: # False
result = False
elif field_type == 9: # True
result = True
elif field_type == 10: # Binary Data
(data_length,) = struct.unpack_from("<I", data, offset)
offset += 4
raw_data = read_form_raw_data(data[offset : offset + data_length])
result = "bytes[0x%X] (%s)" % (
data_length,
" ".join("%02X" % (v) for v in raw_data[0:4]),
)
offset += data_length
else:
raise Exception("Invalid Type %i" % (field_type))
return result, offset
def process_ce_object(data, offset):
object_fields = {}
object_type, offset = read_pascal_string(data, offset)
object_name, offset = read_pascal_string(data, offset)
while offset < len(data):
field_name, offset = read_pascal_string(data, offset)
if field_name:
field_value, offset = read_form_entry(data, offset)
object_fields[field_name] = field_value
elif data[offset]:
nested_object, offset = process_ce_object(data, offset)
object_fields["%s %s" % (nested_object[0], nested_object[1])] = (
nested_object[2]
)
else:
break
return (object_type, object_name, object_fields), offset
def process_ce_form(data):
assert data[0:4].decode("ascii") == "TPF0", "Invalid Form"
offset = 4
form, offset = process_ce_object(data, offset)
assert (offset + 1) == len(data), "Pending Data"
return form
def process_trainer_xml(output_path, trainer_xml):
forms = trainer_xml.find("Forms")
if forms is not None:
for i, val in enumerate(forms):
assert val.attrib["Encoding"] == "Ascii85", "Invalid Form"
form_data = zlib.decompress(decode_ce_base85(val.text), -zlib.MAX_WBITS)[4:]
with open(
"%s/%s_%s_%i.bin" % (output_path, val.tag, val.attrib["Class"], i), "wb"
) as f:
f.write(form_data)
try:
form_type, form_name, form_fields = process_ce_form(form_data)
with open(
"%s/%s_%s_%i_%s_%s.json"
% (
output_path,
val.tag,
val.attrib["Class"],
i,
form_type,
form_name,
),
"w",
) as f:
f.write(json.dumps(form_fields, indent=4))
except Exception as e:
import traceback
print(traceback.format_exc())
Files = trainer_xml.find("Files")
if Files is not None:
for i, val in enumerate(Files):
assert val.attrib["Encoding"] == "Ascii85", "Invalid Form"
file_data = zlib.decompress(decode_ce_base85(val.text), -zlib.MAX_WBITS)[4:]
with open("%s/%s" % (output_path, val.tag), "wb") as f:
f.write(file_data)
def read_cet_trainer(output_path, raw_data):
(file_count,) = struct.unpack_from("<I", raw_data, 0)
raw_data = zlib.decompress(raw_data[4:], -zlib.MAX_WBITS)
offset = 0
print(file_count)
for i in range(file_count):
(length,) = struct.unpack_from("<I", raw_data, offset)
offset += 4
file_name = raw_data[offset : offset + length].decode("ascii")
offset += length
(length,) = struct.unpack_from("<I", raw_data, offset)
offset += 4
folder_name = raw_data[offset : offset + length].decode("ascii")
offset += length
(length,) = struct.unpack_from("<I", raw_data, offset)
offset += 4
file_data = bytearray(raw_data[offset : offset + length])
offset += length
print(i, file_name, folder_name, len(file_data))
if file_name == "CET_TRAINER.CETRAINER":
file_data = decrypt_ce_trainer(file_data)
trainer_xml = ET.fromstring(file_data.decode("ascii"))
process_trainer_xml(output_path, trainer_xml)
else:
continue
with open("%s/%s" % (output_path, file_name), "wb") as f:
f.write(file_data)
assert offset == len(raw_data), "Invalid Data"
output_path = "Output"
if not os.path.exists(output_path):
os.makedirs(output_path)
# read_cet_trainer(output_path, open('ARCHIVE.bin', 'rb').read())
process_trainer_xml(output_path, ET.parse("CET_TRAINER.CETRAINER"))
|