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@Integ Integ/unwxapkg.py forked from feix/unwxapkg.py
Last active Nov 16, 2019

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A useful tool for unpack wxapkg file with python3 surport.
# coding: utf-8
# py2 origin author lrdcq
# usage python3 unwxapkg.py filename
__author__ = 'Integ: https://github.com./integ'
import sys, os
import struct
class WxapkgFile(object):
nameLen = 0
name = ""
offset = 0
size = 0
if len(sys.argv) < 2:
print('usage: unwxapkg.py filename [output_dir]')
exit()
with open(sys.argv[1], "rb") as f:
root = os.path.dirname(os.path.realpath(f.name))
name = os.path.basename(f.name) + '_dir'
if len(sys.argv) > 2:
name = sys.argv[2]
#read header
firstMark = struct.unpack('B', f.read(1))[0]
print('first header mark = {}'.format(firstMark))
info1 = struct.unpack('>L', f.read(4))[0]
print('info1 = {}'.format(info1))
indexInfoLength = struct.unpack('>L', f.read(4))[0]
print('indexInfoLength = {}'.format(indexInfoLength))
bodyInfoLength = struct.unpack('>L', f.read(4))[0]
print('bodyInfoLength = {}'.format(bodyInfoLength))
lastMark = struct.unpack('B', f.read(1))[0]
print('last header mark = {}'.format(lastMark))
if firstMark != 0xBE or lastMark != 0xED:
print('its not a wxapkg file!!!!!')
f.close()
exit()
fileCount = struct.unpack('>L', f.read(4))[0]
print('fileCount = {}'.format(fileCount))
#read index
fileList = []
for i in range(fileCount):
data = WxapkgFile()
data.nameLen = struct.unpack('>L', f.read(4))[0]
data.name = f.read(data.nameLen)
data.offset = struct.unpack('>L', f.read(4))[0]
data.size = struct.unpack('>L', f.read(4))[0]
print('readFile = {} at Offset = {}'.format(str(data.name, encoding = "utf-8"), data.offset))
fileList.append(data)
#save files
for d in fileList:
d.name = '/' + name + str(d.name, encoding = "utf-8")
path = root + os.path.dirname(d.name)
if not os.path.exists(path):
os.makedirs(path)
w = open(root + d.name, 'wb')
f.seek(d.offset)
w.write(f.read(d.size))
w.close()
print('writeFile = {}{}'.format(root, d.name))
f.close()
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