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#!/usr/bin/python
# lrdcq
# usage python wxapkg_unpack.py filename, unpack at filename.unpack
import sys, os
import struct
class WxapkgFile:
nameLen = 0
name = ""
offset = 0
size = 0
def run(fname):
with open(fname, "rb") as f:
root = os.path.dirname(os.path.realpath(f.name))
name = os.path.basename(f.name)
# read header
firstMark = struct.unpack('B', f.read(1))[0]
print('first header mark = ' + str(firstMark))
info1 = struct.unpack('>L', f.read(4))[0]
print('info1 = ' + str(info1))
indexInfoLength = struct.unpack('>L', f.read(4))[0]
print('indexInfoLength = ' + str(indexInfoLength))
bodyInfoLength = struct.unpack('>L', f.read(4))[0]
print('bodyInfoLength = ' + str(bodyInfoLength))
lastMark = struct.unpack('B', f.read(1))[0]
print('last header mark = ' + str(lastMark))
if firstMark != 190 or lastMark != 237:
print('its not a wxapkg file!!!!!')
exit()
fileCount = struct.unpack('>L', f.read(4))[0]
print('fileCount = ' + str(fileCount))
# read index
fileList = []
for i in range(fileCount):
data = WxapkgFile()
data.nameLen = struct.unpack('>L', f.read(4))[0]
data.name = str(f.read(data.nameLen), encoding='utf8')
data.offset = struct.unpack('>L', f.read(4))[0]
data.size = struct.unpack('>L', f.read(4))[0]
print('readFile = ' + data.name + ' at Offset = ' + str(data.offset))
fileList.append(data)
# save files
for d in fileList:
d.name = '/' + name + '.unpack' + d.name
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 = ' + root + d.name)
f.close()
if __name__ == '__main__':
fname = 'wx7c8d593b2c3a7703_3.wxapkg'
fname = '_1079392110_5.wxapkg'
run(fname)