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import tarfile
import zipfile
import sys
import shutil
import os
import parser
import mat
class ZipStripper(parser.Generic_parser):
def is_clean(self):
return False
def get_meta(self):
self.zipin = zipfile.ZipFile(self.filename, 'r')
metadata = {}
for field in self.zipin.infolist():
zipmeta = {}
zipmeta['comment'] = field.comment
zipmeta['modified'] = str(field.date_time)
zipmeta['system'] = field.create_system
zipmeta['zip_version'] = field.create_version
metadata[field.filename] = zipmeta
self.zipin.close()
return metadata
class TarStripper(parser.Generic_parser):
def __init__(self, realname, filename, parser, editor, backup):
super(TarStripper, self).__init__(realname,
filename, parser, editor, backup)
self.compression = ''
self.tarin = tarfile.open(self.filename, 'r' + self.compression)
self.folder_list = []
def _remove(self, current_file):
'''
remove the meta added by tar itself to the file
'''
current_file.mtime = 0
current_file.uid = 0
current_file.gid = 0
current_file.uname = ''
current_file.gname = ''
return current_file
def remove_all(self):
self.tarin = tarfile.open(self.filename, 'r' + self.compression)
self.tarout = tarfile.open(self.filename + parser.POSTFIX,
'w' + self.compression)
for current_file in self.tarin.getmembers():
self.tarin.extract(current_file)
if current_file.type is '0': #is current_file a regular file ?
#no backup file
class_file = mat.create_class_file(current_file.name, False)
class_file.remove_all()
self.tarout.add(current_file.name, filter=self._remove)
mat.secure_remove(current_file.name)
else:
self.folder_list.insert(0, current_file.name)
self.tarin.close()
self.tarout.close()
print self.folder_list
self.remove_folder()
if self.backup is False:
mat.secure_remove(self.filename)
os.rename(self.filename + parser.POSTFIX, self.filename)
def is_file_clean(self, current_file):
'''
Check metadatas added by tar
'''
if current_file.mtime is not 0:
return False
elif current_file.uid is not 0:
return False
elif current_file.gid is not 0:
return False
elif current_file.uname is not '':
return False
elif current_file.gname is not '':
return False
else:
return True
def is_clean(self):
self.tarin = tarfile.open(self.filename, 'r' + self.compression)
for current_file in self.tarin.getmembers():
self.tarin.extract(current_file)
if current_file.type is '0': #is current_file a regular file ?
#no backup file
class_file = mat.create_class_file(current_file.name, False)
if not class_file.is_clean():#if the extracted file is not clean
mat.secure_remove(current_file.name) #remove it
self.remove_folder() #remove all the remaining folders
return False
if not self.is_file_clean(current_file):
return False
mat.secure_remove(current_file.name)
else:
self.folder_list.insert(0, current_file.name)
self.tarin.close()
self.remove_folder()
return True
def get_meta(self):
self.tarin = tarfile.open(self.filename, 'r' + self.compression)
metadata = {}
for current_file in self.tarin.getmembers():
if current_file.type is '0':
if not self.is_file_clean(current_file):#if there is meta
current_meta = {}
current_meta['mtime'] = current_file.mtime
current_meta['uid'] = current_file.uid
current_meta['gid'] = current_file.gid
current_meta['uname'] = current_file.uname
current_meta['gname'] = current_file.gname
metadata[current_file.name] = current_meta
return metadata
def remove_folder(self):
for folder in self.folder_list: #delete remainings folders
shutil.rmtree(folder)
self.folder_list = []
class GzipStripper(TarStripper):
def __init__(self, realname, filename, parser, editor, backup):
super(GzipStripper, self).__init__(realname,
filename, parser, editor, backup)
self.compression = ':gz'
class Bzip2Stripper(TarStripper):
def __init__(self, realname, filename, parser, editor, backup):
super(Bzip2Stripper, self).__init__(realname,
filename, parser, editor, backup)
self.compression = ':bz2'
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