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import tarfile
import zipfile
import sys
import shutil
import os
import logging
import parser
import mat
class GenericArchiveStripper(parser.Generic_parser):
'''
Represent a generic archive
'''
def __init__(self, realname, filename, parser, editor, backup, add2archive):
super(GenericArchiveStripper, self).__init__(realname,
filename, parser, editor, backup, add2archive)
self.compression = ''
self.folder_list = []
self.add2archive = add2archive
def remove_folder(self):
[shutil.rmtree(folder) for folder in self.folder_list]
self.folder_list = []
class ZipStripper(GenericArchiveStripper):
def is_file_clean(self, file):
if file.comment is not '':
return False
elif file.date_time is not 0:
return False
elif file.create_system is not 0:
return False
elif file.create_version is not 0:
return False
else:
return True
def is_clean(self):
zipin = zipfile.ZipFile(self.filename, 'r')
if zipin.comment != '':
return False
for item in zipin.infolist():
if not self.is_file_clean(item):
return False
zipin.extract(item)
if os.path.isfile(item.filename):
try:
cfile = mat.create_class_file(item.filename, False,
self.add2archive)
except:
logging.error('%s is not supported' % item.filename)
#Returning false is the best solution imho
return False
mat.secure_remove(item.filename)
else:
self.folder_list.insert(0, item.filename)
zipin.close()
self.remove_folder()
return False
def get_meta(self):
zipin = zipfile.ZipFile(self.filename, 'r')
metadata = {}
for field in zipin.infolist():
zipmeta = {}
zipmeta['comment'] = field.comment
zipmeta['modified'] = field.date_time
zipmeta['system'] = field.create_system
zipmeta['zip_version'] = field.create_version
metadata[field.filename] = zipmeta
metadata["%s comment" % self.filename] = zipin.comment
zipin.close()
return metadata
def remove_all(self):
self._remove_all(self, 'normal')
def remove_all_ugly(self):
self._remove_all(self, 'ugly')
def _remove_all(self, method):
zipin = zipfile.ZipFile(self.filename, 'r')
zipout = zipfile.ZipFile(self.filename + parser.POSTFIX, 'w',
allowZip64=True)
for item in zipin.infolist():
zipin.extract(item)
if os.path.isfile(item.filename):
try:
cfile = mat.create_class_file(item.filename, False,
self.add2archive)
if method is 'normal':
cfile.remove_all()
else:
cfile.remove_all_ugly()
logging.debug('Processing %s from %s' % (item.filename,
self.filename))
zipout.write(item.filename)
except:
logging.info('%s\' fileformat is not supported' %
item.filename)
if self.add2archive:
zipout.write(item.filename)
mat.secure_remove(item.filename)
else:
self.folder_list.insert(0, item.filename)
zipout.comment = ''
logging.info('%s treated' % self.filename)
self.remove_folder()
zipin.close()
zipout.close()
class TarStripper(GenericArchiveStripper):
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):
tarin = tarfile.open(self.filename, 'r' + self.compression)
tarout = tarfile.open(self.filename + parser.POSTFIX,
'w' + self.compression)
for current_file in tarin.getmembers():
tarin.extract(current_file)
if current_file.type is '0': #is current_file a regular file ?
#no backup file
try:
cfile = mat.create_class_file(current_file.name, False,
self.add2archive)
cfile.remove_all()
tarout.add(current_file.name, filter=self._remove)
except:
logging.info('%s\' format is not supported' %
current_file.name)
if self.add2archive:
tarout.add(current_file.name, filter=self._remove)
mat.secure_remove(current_file.name)
else:
self.folder_list.insert(0, current_file.name)
tarin.close()
tarout.close()
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):
tarin = tarfile.open(self.filename, 'r' + self.compression)
for current_file in tarin.getmembers():
if not self.is_file_clean(current_file):
return False
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,
self.add2archive)
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
mat.secure_remove(current_file.name)
else:
self.folder_list.insert(0, current_file.name)
tarin.close()
self.remove_folder()
return True
def get_meta(self):
tarin = tarfile.open(self.filename, 'r' + self.compression)
metadata = {}
for current_file in 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
tarin.close()
return metadata
class GzipStripper(TarStripper):
def __init__(self, realname, filename, parser, editor, backup, add2archive):
super(GzipStripper, self).__init__(realname,
filename, parser, editor, backup, add2archive)
self.compression = ':gz'
class Bzip2Stripper(TarStripper):
def __init__(self, realname, filename, parser, editor, backup, add2archive):
super(Bzip2Stripper, self).__init__(realname,
filename, parser, editor, backup, add2archive)
self.compression = ':bz2'
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