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mpq.py
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mpq.py
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#!/usr/bin/env python
# coding: utf-8
# library for reading MPQ (MoPaQ) archives.
from __future__ import print_function
import platform
import os, struct, zlib, bz2
from struct import unpack, pack
from io import BytesIO
MPQ_FILE_IMPLODE = 0x00000100
MPQ_FILE_COMPRESS = 0x00000200
MPQ_FILE_ENCRYPTED = 0x00010000
MPQ_FILE_FIX_KEY = 0x00020000
MPQ_FILE_SINGLE_UNIT = 0x01000000
MPQ_FILE_DELETE_MARKER = 0x02000000
MPQ_FILE_SECTOR_CRC = 0x04000000
MPQ_FILE_EXISTS = 0x80000000
# <4s2I2H4I
MPQ_HEADER_KEYS = (
'magic', 'header_size', 'archive_size', 'format_version',
'sector_size_shift', 'hash_table_offset', 'block_table_offset',
'hash_table_entries', 'block_table_entries'
)
# q2h
MPQ_HEADER_EXT_KEYS = (
'extended_block_table_offset', 'hash_table_offset_high',
'block_table_offset_high'
)
# '<4s3I'
MPQ_USER_DATA_HEADER_KEYS = (
'magic', 'user_data_size', 'mpq_header_offset',
'user_data_header_size'
)
# '2I2HI'
MPQ_HASH_TABLE_ENTRY_KEYS = (
'hash_a', 'hash_b', 'locale', 'platform', 'block_table_index'
)
# '4I'
MPQ_BLOCK_TABLE_ENTRY_KEYS = (
'offset', 'archived_size', 'size', 'flags'
)
"""
C++ Data Type:
8 bit = BYTE
16 bit = WORD
32 bit = DWORD
64 bit = QWORD (quad-word).
C Data Type:
"""
class BufferReader(object):
def __init__(self, file, endian="<"):
assert(hasattr(file, 'read'))
self.file = file
self.endian = endian
def read_u8(self, length=1):
# unsigned char
return unpack(self.endian + "%dB" % length, self.file.read(1*length))
def read_u16(self, length=1):
# unsigned short
return unpack(self.endian + "%dH" % length, self.file.read(2*length))
def read_u32(self, length=1):
# unsigned int
return unpack(self.endian + "%dI" % length, self.file.read(4*length))
def read_usize(self, length=1):
# unsigned long
if platform.architecture()[0] == '64bit':
words = 8
elif platform.architecture()[0] == '32bit':
words = 4
elif platform.architecture()[0] == '16bit':
words = 2
else:
raise ValueError('Ooops...')
return unpack(self.endian + "%dL" % length, self.file.read(words*length))
def read_u64(self, length=1):
# unsigned long long
return unpack(self.endian + "%dQ" % length, self.file.read(8*length))
def read_i8(self, length=1):
# signed char
return unpack(self.endian + "%db" % length, self.file.read(1*length))
def read_i16(self, length=1):
# short
return unpack(self.endian + "%dh" % length, self.file.read(2*length))
def read_i32(self, length=1):
# int
return unpack(self.endian + "%di" % length, self.file.read(4*length))
def read_isize(self, length=1):
# long
if platform.architecture()[0] == '64bit':
words = 8
elif platform.architecture()[0] == '32bit':
words = 4
elif platform.architecture()[0] == '16bit':
words = 2
else:
raise ValueError('Ooops...')
return unpack(self.endian + "%dl" % length, self.file.read(words*length))
def read_i64(self, length=1):
# long long
return unpack(self.endian + "%dq" % length, self.file.read(8*length))
def read_f32(self, length=1):
# float
return unpack(self.endian + "%df" % length, self.file.read(4*length))
def read_f64(self, length=1):
# double
return unpack(self.endian + "%dd" % length, self.file.read(8*length))
def read_bit(self, length=8):
assert(length%8 == 0)
base = 2
_bytes = self.read_byte(length=length/8)
bits = []
for n in _bytes:
_bits = []
while n != 0:
m = n % base
n = n / base
_bits.append(m)
for n in range(8-len(_bits)):
_bits.append(0)
if self.endian == '>' or self.endian == '!':
_bits.reverse()
bits.extend(_bits)
if self.endian == '<':
bits.reverse()
# while bits[0] == 0:
# bits = bits[1:]
return tuple(bits)
def read_byte(self, length=1):
return self.read_u8(length=length)
def read_string(self, length):
return str(self.file.read(length))
def seek(self, pos):
return self.file.seek(pos)
class Archive(object):
file = None
def __init__(self, file):
assert(hasattr(file, 'read'))
self.file = file
def parse(self):
self.parse_header()
def parse_header(self):
magic = self.file.read(4)
self.file.seek(0)
if magic == b'MPQ\x1a':
header = read_mpq_header()
header['offset'] = 0
elif magic == b'MPQ\x1b':
pass
else:
raise ValueError("Invalid file header.")
def files(self):
pass
def tables(self):
pass
def header(self):
pass
def open_file(filename):
file = open(filename, 'rb')
archive = Archive(file)
archive.parse()
return archive
def usage():
msg = """
$ python mpq.py target.mpq
"""
print(usage)
import binascii
def test_buffer_reader():
# Raw <4s2I2H4I
f = open("test.replay", "rb")
size = 4*1 + 2*4 + 2*2 + 4*4
print(unpack("<4s2I2H4I", f.read(size)))
# reader
f2 = open("test.replay", "rb")
buff = BufferReader(f2)
res = (
buff.read_u32(length=1),
buff.read_u32(length=2),
buff.read_u16(length=2),
buff.read_u32(length=4),
)
print(res)
# Bits
f2 = open("test.replay", "rb")
buff = BufferReader(f2)
bits = buff.read_bit(length=8*4)
bits = map(lambda n: str(n), bits)
print("".join(bits))
print("Num: 458313805 Bin: ", bin(458313805).replace("0b", ""))
code = list("MPQ\x1b")
_bytes = map(lambda s: ord(s), code)
_result = map(lambda n: bin(n).replace("0b", ""), _bytes)
print(_result)
def main(*args, **kwargs):
# archive = open("test.replay")
# print(archive)
test_buffer_reader()
if __name__ == '__main__':
main()