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()