Cool_Tools/ifstools
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Super files: MD5 checks and balances

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This commit is contained in:
Will Toohey 2020-10-25 16:48:06 +10:00
parent 57e909572e
commit e20f2c539c
5 changed files with 158 additions and 106 deletions
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45
ifstools/handlers/GenericFolder.py
View File

@ -3,13 +3,16 @@ from os.path import getmtime, basename, dirname, join, realpath, isfile
from collections import OrderedDict
import lxml.etree as etree
from tqdm import tqdm
from . import GenericFile
from .Node import Node
class GenericFolder(Node):
def __init__(self, ifs_data, obj, parent = None, path = '', name = '', supers = None):
def __init__(self, ifs_data, obj, parent = None, path = '', name = '',
supers = None, super_disable = False, super_skip_bad = False,
super_abort_if_bad = False):
# circular dependencies mean we import here
from . import AfpFolder, TexFolder
self.folder_handlers = {
@ -17,6 +20,9 @@ class GenericFolder(Node):
'tex' : TexFolder,
}
self.supers = supers if supers else []
self.super_disable = super_disable
self.super_skip_bad = super_skip_bad
self.super_abort_if_bad = super_abort_if_bad
Node.__init__(self, ifs_data, obj, parent, path, name)
file_handler = GenericFile
@ -37,24 +43,51 @@ class GenericFolder(Node):
if filename == '_info_': # metadata
continue
elif filename == '_super_': # sub-reference
if self.super_disable:
continue
super_file = join(my_path, child.text)
if not isfile(super_file):
raise IOError('IFS references super-IFS {} but it does not exist'.format(child.text))
raise IOError('IFS references super-IFS {} but it does not exist. Use --super-disable to ignore.'.format(child.text))
self.supers.append(IFS(super_file))
md5_expected = None
if list(child) and child[0].tag == 'md5':
md5_expected = bytearray.fromhex(child[0].text)
super_ifs = IFS(super_file, super_skip_bad=self.super_skip_bad,
super_abort_if_bad=self.super_abort_if_bad)
super_ifs.md5_good = (super_ifs.manifest_md5 == md5_expected) # add our own sentinel
if not super_ifs.md5_good:
super_msg = 'IFS references super-IFS {} with MD5 {} but the actual MD5 is {}. One IFS may be corrupt.'.format(
child.text, md5_expected.hex(), super_ifs.manifest_md5.hex()
)
if self.super_abort_if_bad:
raise IOError(super_msg + ' Aborting.')
elif self.super_skip_bad:
tqdm.write('WARNING: {} Skipping all files it contains.'.format(super_msg))
else:
tqdm.write('WARNING: {}'.format(super_msg))
self.supers.append(super_ifs)
# folder: has children or timestamp only, and isn't a reference
elif (list(child) or len(child.text.split(' ')) == 1) and child[0].tag != 'i':
handler = self.folder_handlers.get(filename, GenericFolder)
self.folders[filename] = handler(self.ifs_data, child, self, self.full_path, filename, self.supers)
self.folders[filename] = handler(self.ifs_data, child, self, self.full_path, filename, self.supers,
self.super_disable, self.super_skip_bad, self.super_abort_if_bad)
else: # file
self.files[filename] = self.file_handler(self.ifs_data, child, self, self.full_path, filename)
if list(child) and child[0].tag == 'i':
if self.super_disable:
continue
# backref
super_ref = int(child[0].text)
if super_ref > len(self.supers):
raise IOError('IFS references super-IFS {} but we only have {}'.format(super_ref, len(self.supers)))
super_ifs = self.supers[super_ref - 1]
if not super_ifs.md5_good and self.super_skip_bad:
continue
super_files = super_ifs.tree.all_files
try:
super_file = next(x for x in super_files if (
@ -65,6 +98,8 @@ class GenericFolder(Node):
raise IOError('IFS references super-IFS entry {} in {} but it does not exist'.format(filename, super_ifs.ifs_out))
self.files[filename] = super_file
else:
self.files[filename] = self.file_handler(self.ifs_data, child, self, self.full_path, filename)
if not self.full_path: # root
self.tree_complete()

7
ifstools/handlers/MD5Folder.py
View File

@ -6,8 +6,11 @@ from . import GenericFolder
class MD5Folder(GenericFolder):
def __init__(self, ifs_data, parent, obj, path = '', name = '', supers = None, md5_tag = None, extension = None):
GenericFolder.__init__(self, ifs_data, parent, obj, path, name, supers)
def __init__(self, ifs_data, parent, obj, path = '', name = '', supers = None,
super_disable = False, super_skip_bad = False,
super_abort_if_bad = False, md5_tag = None, extension = None):
GenericFolder.__init__(self, ifs_data, parent, obj, path, name, supers,
super_disable, super_skip_bad, super_abort_if_bad)
self.md5_tag = md5_tag if md5_tag else self.name
self.extension = extension

6
ifstools/handlers/TexFolder.py
View File

@ -60,8 +60,10 @@ class ImageCanvas(GenericFile):
return
class TexFolder(MD5Folder):
def __init__(self, ifs_data, obj, parent = None, path = '', name = '', supers = None):
MD5Folder.__init__(self, ifs_data, obj, parent, path, name, supers, 'image', '.png')
def __init__(self, ifs_data, obj, parent = None, path = '', name = '', supers = None,
super_disable = False, super_skip_bad = False, super_abort_if_bad = False):
MD5Folder.__init__(self, ifs_data, obj, parent, path, name, supers,
super_disable, super_skip_bad, super_abort_if_bad, 'image', '.png')
def tree_complete(self):
MD5Folder.tree_complete(self)

17
ifstools/ifs.py
View File

@ -41,15 +41,17 @@ class FileBlob(object):
return self.file.read(size)
class IFS:
def __init__(self, path):
def __init__(self, path, super_disable = False, super_skip_bad = False,
super_abort_if_bad = False):
if isfile(path):
self.load_ifs(path)
self.load_ifs(path, super_disable, super_skip_bad, super_abort_if_bad)
elif isdir(path):
self.load_dir(path)
else:
raise IOError('Input path {} does not exist'.format(path))
def load_ifs(self, path):
def load_ifs(self, path, super_disable = False, super_skip_bad = False,
super_abort_if_bad = False):
self.is_file = True
name = basename(path)
@ -71,13 +73,16 @@ class IFS:
manifest_end = header.get_u32()
self.data_blob = FileBlob(self.file, manifest_end)
self.manifest_md5 = None
if self.file_version > 1:
# md5 of manifest, unchecked
header.offset += 16
self.manifest_md5 = header.get_bytes(16)
self.file.seek(header.offset)
self.manifest = KBinXML(self.file.read(manifest_end-header.offset))
self.tree = GenericFolder(self.data_blob, self.manifest.xml_doc)
self.tree = GenericFolder(self.data_blob, self.manifest.xml_doc,
super_disable=super_disable, super_skip_bad=super_skip_bad,
super_abort_if_bad=super_abort_if_bad
)
# IFS files repacked with other tools usually have wrong values - don't validate this
#assert ifs_tree_size == self.manifest.mem_size

13
ifstools/ifstools.py
View File

@ -41,14 +41,20 @@ def main():
parser.add_argument('-e', '--extract-folders', action='store_true', help='do not repack folders, instead unpack any IFS files inside them', dest='extract_folders')
parser.add_argument('-y', action='store_true', help='don\'t prompt for file/folder overwrite', dest='overwrite')
parser.add_argument('-o', default='.', help='output directory', dest='out_dir')
parser.add_argument('--tex-only', action='store_true', help='only extract textures', dest='tex_only')
parser.add_argument('--tex-only', action='store_true', help='only extract textures')
parser.add_argument('-c', '--canvas', action='store_true', help='dump the image canvas as defined by the texturelist.xml in _canvas.png', dest='dump_canvas')
parser.add_argument('--bounds', action='store_true', help='draw image bounds on the exported canvas in red', dest='draw_bbox')
parser.add_argument('--uv', action='store_true', help='crop images to uvrect (usually 1px smaller than imgrect). Forces --tex-only', dest='crop_to_uvrect')
parser.add_argument('--no-cache', action='store_false', help='ignore texture cache, recompress all', dest='use_cache')
parser.add_argument('--rename-dupes', action='store_true', dest='rename_dupes',
parser.add_argument('--rename-dupes', action='store_true',
help='if two files have the same name but differing case (A.png vs a.png) rename the second as "a (1).png" to allow both to be extracted on Windows')
parser.add_argument('-m', '--extract-manifest', action='store_true', help='extract the IFS manifest for inspection', dest='extract_manifest')
parser.add_argument('--super-disable', action='store_true',
help='only extract files unique to this IFS, do not follow "super" parent references at all')
parser.add_argument('--super-skip-bad', action='store_true',
help='if a "super" IFS reference has a checksum mismatch, do not extract it')
parser.add_argument('--super-abort-if-bad', action='store_true',
help='if a "super" IFS reference has a checksum mismatch, cancel and display an error')
parser.add_argument('-s', '--silent', action='store_false', dest='progress',
help='don\'t display files as they are processed')
parser.add_argument('-r', '--norecurse', action='store_false', dest='recurse',
@ -71,7 +77,8 @@ def main():
if args.progress:
print(f)
try:
i = IFS(f)
i = IFS(f, super_disable=args.super_disable, super_skip_bad=args.super_skip_bad,
super_abort_if_bad=args.super_abort_if_bad)
except IOError as e:
# human friendly
print('{}: {}'.format(os.path.basename(f), str(e)))