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# -*- coding: utf-8 -*-
import StringIO
import hashlib
import sys
import os
import os.path
import zlib
import datetime
import fileinput
import logging
from permission import *
from config import config
class ObjectError(Exception):
pass;
class Object:
def __init__(self, owner, hash):
self.owner = owner
self.hash = hash
owner_path = config.root + self.owner + '/'
if not os.path.exists(owner_path) :
logging.error("User {} is not registered".format(self.owner))
raise ObjectError
self.path = owner_path + self.hash[:2] + '/' + self.hash[2:] + '/'
if not os.path.exists(self.path) :
logging.error("Object {} can't be found for user {}".format(self.hash,
self.owner))
raise ObjectError
def get_permission(self, user):
file = open(self.path + 'permissions', 'r')
for line in file:
name, sep, perm = line.rstrip('\n').partition(' ')
if name == user:
return int(perm)
return 0
def get_child_list(self, user):
perm = self.get_permission(user)
if not perm & LIST :
logging.error("User {} doesn't have the list permission for object {}"
.format(user, self.hash))
raise PermissionError
file = open(self.path + "childs", 'r')
result = []
for line in file :
name = line.rstrip('\n')
try:
child = Object(self.owner, name)
except ObjectError:
logging.error("Object {} can't be find for user {}".format(self.hash,
self.owner))
else:
permission = child.get_permission(user)
if permission > 0:
result.append((name, permission))
file.close()
return result
def get_content(self, user):
perm = self.get_permission(user)
if not perm & READ :
logging.error("User {} doesn't have read access to object {}"
.format(user, self.hash))
raise PermissionError
file = open(self.path + "object", 'r')
result = file.read()
file.close()
return result
if __name__ == '__main__':
pass
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