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unpack wxapkg
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| #!/usr/bin/python | |
| # usage python unwxapkg.py filename | |
| import sys,os | |
| import struct | |
| class WxapkgFile: | |
| nameLen = 0 | |
| name = "" | |
| offset = 0 | |
| size = 0 | |
| if len(sys.argv) < 2: | |
| print 'usage: unwxapkg.py filename' | |
| exit() | |
| with open(sys.argv[1], "rb") as f: | |
| root = os.path.dirname(os.path.realpath(f.name)) | |
| name = os.path.basename(f.name) | |
| if len(sys.argv) > 2: | |
| name = sys.argv[2] | |
| #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 != 0xBE or lastMark != 0xED: | |
| 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 = f.read(data.nameLen) | |
| 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 + d.name | |
| path = root + os.path.dirname(d.name) | |
| if not os.path.exists(path): | |
| os.makedirs(path) | |
| w = open(root + d.name, 'w') | |
| f.seek(d.offset) | |
| w.write(f.read(d.size)) | |
| w.close() | |
| print 'writeFile = ' + root + d.name | |
| f.close() |
raceback (most recent call last):
File "index.py", line 30, in
firstMark = struct.unpack('B', f.read(1))[0]
struct.error: unpack requires a string argument of length 1
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fork了一版python3的，亲测可用，需要的亲自下，感谢作者