mirror of
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128 lines
3.1 KiB
Python
128 lines
3.1 KiB
Python
# coding: utf-8
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import string, random, hashlib
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import uuid
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from db import User, session
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class UserManager:
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SUCCESS = 0
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INVALID_ID = 1
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NO_SUCH_USER = 2
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NAME_EXISTS = 3
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WRONG_PASS = 4
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@staticmethod
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def get(uid):
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if type(uid) in (str, unicode):
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try:
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uid = uuid.UUID(uid)
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except:
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return UserManager.INVALID_ID, None
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elif type(uid) is uuid.UUID:
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pass
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else:
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return UserManager.INVALID_ID, None
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user = User.query.get(uid)
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if user is None:
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return UserManager.NO_SUCH_USER, None
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return UserManager.SUCCESS, user
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@staticmethod
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def add(name, password, mail, admin):
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if User.query.filter(User.name == name).first():
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return UserManager.NAME_EXISTS
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password = UserManager.__decode_password(password)
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crypt, salt = UserManager.__encrypt_password(password)
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user = User(name = name, mail = mail, password = crypt, salt = salt, admin = admin)
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session.add(user)
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session.commit()
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return UserManager.SUCCESS
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@staticmethod
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def delete(uid):
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status, user = UserManager.get(uid)
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if status != UserManager.SUCCESS:
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return status
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session.delete(user)
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session.commit()
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return UserManager.SUCCESS
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@staticmethod
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def try_auth(name, password):
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password = UserManager.__decode_password(password)
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user = User.query.filter(User.name == name).first()
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if not user:
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return UserManager.NO_SUCH_USER, None
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elif UserManager.__encrypt_password(password, user.salt)[0] != user.password:
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return UserManager.WRONG_PASS, None
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else:
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return UserManager.SUCCESS, user
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@staticmethod
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def change_password(uid, old_pass, new_pass):
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status, user = UserManager.get(uid)
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if status != UserManager.SUCCESS:
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return status
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old_pass = UserManager.__decode_password(old_pass)
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new_pass = UserManager.__decode_password(new_pass)
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if UserManager.__encrypt_password(old_pass, user.salt)[0] != user.password:
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return UserManager.WRONG_PASS
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user.password = UserManager.__encrypt_password(new_pass, user.salt)[0]
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session.commit()
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return UserManager.SUCCESS
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@staticmethod
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def change_password2(name, new_pass):
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user = User.query.filter(User.name == name).first()
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if not user:
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return UserManager.NO_SUCH_USER
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new_pass = UserManager.__decode_password(new_pass)
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user.password = UserManager.__encrypt_password(new_pass, user.salt)[0]
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session.commit()
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return UserManager.SUCCESS
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@staticmethod
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def error_str(err):
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if err == UserManager.SUCCESS:
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return 'No error'
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elif err == UserManager.INVALID_ID:
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return 'Invalid user id'
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elif err == UserManager.NO_SUCH_USER:
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return 'No such user'
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elif err == UserManager.NAME_EXISTS:
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return 'There is already a user with that name'
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elif err == UserManager.WRONG_PASS:
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return 'Wrong password'
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else:
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return 'Unkown error'
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@staticmethod
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def __encrypt_password(password, salt = None):
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if salt is None:
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salt = ''.join(random.choice(string.printable.strip()) for i in xrange(6))
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return hashlib.sha1(salt + password).hexdigest(), salt
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@staticmethod
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def __decode_password(password):
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if not password.startswith('enc:'):
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return password
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enc = password[4:]
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ret = ''
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while enc:
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ret = ret + chr(int(enc[:2], 16))
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enc = enc[2:]
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return ret
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