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custominstall: create title.db and import.db if missing

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This commit is contained in:
Ian Burgwin
2021-02-24 15:07:59 -08:00
parent 1dec5175ea
commit 7a68b23365
1 changed files with 37 additions and 2 deletions
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39
custominstall.py
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@@ -7,6 +7,7 @@
from argparse import ArgumentParser
from enum import Enum
from glob import glob
import gzip
from os import makedirs, rename, scandir
from os.path import dirname, join, isdir, isfile
from random import randint
@@ -291,6 +292,8 @@ class CustomInstall:
f'please remove extra directories')
elif len(id1s) == 0:
raise SDPathError(f'Could not find a suitable id1 directory for id0 {crypto.id0.hex()}')
id1 = id1s[0]
sd_path = join(sd_path, id1)
if self.cifinish_out:
cifinish_path = self.cifinish_out
@@ -307,6 +310,40 @@ class CustomInstall:
f'Exiting now to prevent possible issues. If you want to try again, delete cifinish.bin from the SD card and re-run custom-install.')
return None, False, 0
db_path = join(sd_path, 'dbs')
titledb_path = join(db_path, 'title.db')
importdb_path = join(db_path, 'import.db')
if not isfile(titledb_path):
makedirs(db_path, exist_ok=True)
with gzip.open(join(script_dir, 'title.db.gz')) as f:
tdb = f.read()
self.log(f'Creating title.db...')
with open(titledb_path, 'wb') as o:
with self.crypto.create_ctr_io(Keyslot.SD, o, self.crypto.sd_path_to_iv('/dbs/title.db')) as e:
e.write(tdb)
cmac = crypto.create_cmac_object(Keyslot.CMACSDNAND)
cmac_data = [b'CTR-9DB0', 0x2.to_bytes(4, 'little'), tdb[0x100:0x200]]
cmac.update(sha256(b''.join(cmac_data)).digest())
e.seek(0)
e.write(cmac.digest())
self.log(f'Creating import.db...')
with open(importdb_path, 'wb') as o:
with self.crypto.create_ctr_io(Keyslot.SD, o, self.crypto.sd_path_to_iv('/dbs/import.db')) as e:
e.write(tdb)
cmac = crypto.create_cmac_object(Keyslot.CMACSDNAND)
cmac_data = [b'CTR-9DB0', 0x3.to_bytes(4, 'little'), tdb[0x100:0x200]]
cmac.update(sha256(b''.join(cmac_data)).digest())
e.seek(0)
e.write(cmac.digest())
del tdb
with TemporaryDirectory(suffix='-custom-install') as tempdir:
# set up the common arguments for the two times we call save3ds_fuse
save3ds_fuse_common_args = [
@@ -338,8 +375,6 @@ class CustomInstall:
self.log(l)
return None, False, 0
sd_path = join(sd_path, id1s[0])
if self.seeddb:
load_seeddb(self.seeddb)