homebrewfilter/tools/EditTMD.py
2016-08-14 22:57:36 +02:00

88 lines
3.4 KiB
Python
Executable File

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# version 1.0
import os
import sys
import re
import binascii
import argparse
import string
parser = argparse.ArgumentParser()
parser.add_argument('inputfile', action='store', help='Input a TMD file, or a directory that will be recursively searched for TMD files with filenames ending in \'tmd\' and \'tmd.out\'')
parser.add_argument('-title', action='store', dest='title', help='Enter a new Title ID, which must be 16 hexadecimal characters long')
version = parser.add_mutually_exclusive_group()
version.add_argument('-versionH', action='store', dest='versionH', help='Enter a new version number in hex. 0 to FFFF/0x0 to 0xFFFF')
version.add_argument('-versionD', action='store', type=int, dest='versionD', help='Enter a new version number in decimal. 0 to 65535')
arguments = parser.parse_args()
newversion = -1
newtitle = ''
if arguments.versionH is not None:
if 0 <= int(arguments.versionH,16) <= 65535:
newversion = int(arguments.versionH,16)
versionPrintType = 'Hex'
else:
print 'The version number must be from 0 to FFFF - not ' + arguments.versionH
sys.exit(0)
if arguments.versionD is not None:
if 0 <= arguments.versionD <= 65535:
newversion = arguments.versionD
versionPrintType = 'Dec'
else:
print 'The version number must be from 0 to 65535 - not ' + str(arguments.versionD)
sys.exit(0)
if arguments.title is not None:
if (len(arguments.title) is 16) & all(c in string.hexdigits for c in arguments.title):
newtitle = arguments.title
else:
print 'The Title ID must be 16 hexadecimal characters long'
sys.exit(0)
print '*******\nEditTMD\n*******\n'
def tmdProcess(fpath):
print '**********'
with open(fpath) as f:
tmd = f.read()
tmdoffsets = [m.start() for m in re.finditer(b'Root-CA00000001-CP00000004', tmd)]
if (len(tmdoffsets) != 1):
print fpath + ' - Is this really a (decrypted) tmd file?'
else:
tmd = bytearray(tmd)
offs = tmdoffsets[0]
print fpath
if newtitle:
print 'Title ID: ' + binascii.hexlify(tmd[offs+0x4C:offs+0x54]) + " -> " + arguments.title
tmd[offs+0x4C:offs+0x54] = binascii.a2b_hex(arguments.title)
if newversion is not -1: # ' "if newversion:" is not good enough since the version can be 0, but it would still return false'
if versionPrintType is 'Dec':
print 'Version: ' + str(int(binascii.hexlify(tmd[offs+0x9C:offs+0x9E]),16)) + " -> " + str(newversion)
if versionPrintType is 'Hex':
print 'Version: ' + binascii.hexlify(tmd[offs+0x9C:offs+0x9E]).upper() + " -> " + "%0.4X" % newversion
tmd[offs+0x9C:offs+0x9E] = binascii.a2b_hex("%0.4X" % newversion)
with open(fpath, "wb") as f:
f.write(tmd)
print ''
if os.path.exists(arguments.inputfile):
if (os.path.isdir(arguments.inputfile)):
for dname, dirs, files in os.walk(arguments.inputfile):
for fname in files:
if(fname.lower().endswith('tmd')) or (fname.lower().endswith('tmd.out')): # if(fname.lower() == 'tmd'):
fpath = os.path.join(dname, fname)
if os.path.isfile(fpath):
tmdProcess(fpath)
elif os.path.isfile(arguments.inputfile):
tmdProcess(arguments.inputfile)
print 'Finished'