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websession_model.py
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Tue, Jan 7, 11:52

websession_model.py
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# -*- coding: utf-8 -*-
#
## This file is part of Invenio.
## Copyright (C) 2011, 2012 CERN.
##
## Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## Invenio is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02D111-1307, USA.
"""
WebSession database models.
"""
# General imports.
from invenio.sqlalchemyutils import db
from sqlalchemy.ext.hybrid import hybrid_property
from invenio.dbquery import serialize_via_marshal, deserialize_via_marshal
# Create your models here.
#from invenio.webuser import get_default_user_preferences
from invenio.access_control_config import CFG_EXTERNAL_AUTHENTICATION, \
CFG_WEBACCESS_MSGS, CFG_WEBACCESS_WARNING_MSGS, CFG_EXTERNAL_AUTH_DEFAULT
def get_default_user_preferences():
user_preference = {
'login_method': ''}
if CFG_EXTERNAL_AUTH_DEFAULT in CFG_EXTERNAL_AUTHENTICATION:
user_preference['login_method'] = CFG_EXTERNAL_AUTH_DEFAULT
return user_preference
#TODO Consider using standard cPickle or pickle
# (then just remove pickler=MarshalPickle()).
class MarshalPickle(object):
def __init__(self, set_empty=False, default=None):
self.set_empty = set_empty
self.default = default or {}
def dumps(self, obj, protocol=None):
if obj is not None:
obj = serialize_via_marshal(obj)
elif self.set_empty:
obj = serialize_via_marshal(self.default)
return obj
def loads(self, obj):
try:
obj = deserialize_via_marshal(obj)
except:
obj = self.default
return obj
class User(db.Model):
"""Represents a User record."""
def __str__(self):
return "%s <%s>" % (self.nickname, self.email)
__tablename__ = 'user'
id = db.Column(db.Integer(15, unsigned=True),
primary_key=True,
autoincrement=True)
email = db.Column(db.String(255), nullable=False,
server_default='')
_password = db.Column(db.LargeBinary, name="password", nullable=False)
note = db.Column(db.String(255), nullable=True)
settings = db.Column(
db.PickleType(
mutable=True,
pickler=MarshalPickle(
set_empty=True,
default=get_default_user_preferences())),
nullable=True)
nickname = db.Column(db.String(255), nullable=False,
server_default='')
last_login = db.Column(db.DateTime, nullable=False,
server_default='0001-01-01 00:00:00')
#TODO re_invalid_nickname = re.compile(""".*[,'@]+.*""")
_password_comparator = db.PasswordComparator(_password)
@hybrid_property
def password(self):
return self._password
@password.setter
def password(self, password):
self._password = self._password_comparator.hash(password)
@password.comparator
def password(self):
return self._password_comparator
@property
def guest(self):
return False if self.email else True
#
# Basic functions for user authentification.
#
def get_id(self):
return self.id
def is_guest(self):
return self.guest
def is_authenticated(self):
return True if self.email else False
def is_active(self):
return True
class Usergroup(db.Model):
"""Represents a Usergroup record."""
def __str__(self):
return "%s <%s>" % (self.name, self.description)
__tablename__ = 'usergroup'
id = db.Column(db.Integer(15, unsigned=True),
nullable=False,
primary_key=True, autoincrement=True)
name = db.Column(db.String(255), nullable=False,
server_default='')
description = db.Column(db.Text, nullable=True)
join_policy = db.Column(db.CHAR(2), nullable=False,
server_default='')
login_method = db.Column(db.String(255), nullable=False,
server_default='INTERNAL')
#all_users = db.relationship(User, secondary=lambda: UserUsergroup.__table__,
# collection_class=set)
class UserUsergroup(db.Model):
"""Represents a UserUsergroup record."""
def __str__(self):
return "%s:%s" % (self.user.nickname, self.usergroup.name)
__tablename__ = 'user_usergroup'
id_user = db.Column(db.Integer(15, unsigned=True),
db.ForeignKey(User.id),
nullable=False, server_default='0',
primary_key=True)
id_usergroup = db.Column(db.Integer(15, unsigned=True),
db.ForeignKey(Usergroup.id),
nullable=False, server_default='0',
primary_key=True)
user_status = db.Column(db.CHAR(1), nullable=False,
server_default='')
user_status_date = db.Column(db.DateTime, nullable=False,
server_default='0001-01-01 00:00:00')
user = db.relationship(User, backref='usergroups')
usergroup = db.relationship(Usergroup, backref='users')
class Session(db.Model):
"""Represents a Session record."""
def __init__(self):
pass
__tablename__ = 'session'
session_key = db.Column(db.String(32), nullable=False,
server_default='', primary_key=True)
session_expiry = db.Column(db.DateTime, nullable=False,
server_default='0001-01-01 00:00:00')
# Use standard binary column.
session_object = db.Column(db.LargeBinary, nullable=True)
uid = db.Column(db.Integer(15, unsigned=True),
nullable=False)
__all__ = ['User',
'Usergroup',
'UserUsergroup',
'Session']

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