root / snf-astakos-app / astakos / im / models.py @ ff9290ec
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# Copyright 2011-2012 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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import hashlib |
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import uuid |
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import logging |
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import json |
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from time import asctime |
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from datetime import datetime, timedelta |
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from base64 import b64encode |
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from urlparse import urlparse, urlunparse |
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from random import randint |
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from django.db import models, IntegrityError |
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from django.contrib.auth.models import User, UserManager, Group |
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from django.utils.translation import ugettext as _ |
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from django.core.exceptions import ValidationError |
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from django.template.loader import render_to_string |
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from django.core.mail import send_mail |
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from django.db import transaction |
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from django.db.models.signals import post_save, post_syncdb |
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from astakos.im.settings import DEFAULT_USER_LEVEL, INVITATIONS_PER_LEVEL, \ |
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AUTH_TOKEN_DURATION, BILLING_FIELDS, QUEUE_CONNECTION, SITENAME, \ |
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EMAILCHANGE_ACTIVATION_DAYS
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QUEUE_CLIENT_ID = 3 # Astakos. |
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logger = logging.getLogger(__name__) |
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class AstakosUser(User): |
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"""
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Extends ``django.contrib.auth.models.User`` by defining additional fields.
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"""
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# Use UserManager to get the create_user method, etc.
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objects = UserManager() |
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affiliation = models.CharField('Affiliation', max_length=255, blank=True) |
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provider = models.CharField('Provider', max_length=255, blank=True) |
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#for invitations
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user_level = DEFAULT_USER_LEVEL |
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level = models.IntegerField('Inviter level', default=user_level)
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invitations = models.IntegerField('Invitations left', default=INVITATIONS_PER_LEVEL.get(user_level, 0)) |
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auth_token = models.CharField('Authentication Token', max_length=32, |
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null=True, blank=True) |
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auth_token_created = models.DateTimeField('Token creation date', null=True) |
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auth_token_expires = models.DateTimeField('Token expiration date', null=True) |
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updated = models.DateTimeField('Update date')
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is_verified = models.BooleanField('Is verified?', default=False) |
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# ex. screen_name for twitter, eppn for shibboleth
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third_party_identifier = models.CharField('Third-party identifier', max_length=255, null=True, blank=True) |
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email_verified = models.BooleanField('Email verified?', default=False) |
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has_credits = models.BooleanField('Has credits?', default=False) |
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has_signed_terms = models.BooleanField('Agree with the terms?', default=False) |
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date_signed_terms = models.DateTimeField('Signed terms date', null=True, blank=True) |
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__has_signed_terms = False
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__groupnames = [] |
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def __init__(self, *args, **kwargs): |
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super(AstakosUser, self).__init__(*args, **kwargs) |
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self.__has_signed_terms = self.has_signed_terms |
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if self.id: |
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self.__groupnames = [g.name for g in self.groups.all()] |
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else:
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self.is_active = False |
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@property
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def realname(self): |
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return '%s %s' %(self.first_name, self.last_name) |
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@realname.setter
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def realname(self, value): |
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parts = value.split(' ')
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if len(parts) == 2: |
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self.first_name = parts[0] |
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self.last_name = parts[1] |
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else:
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self.last_name = parts[0] |
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@property
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def invitation(self): |
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try:
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return Invitation.objects.get(username=self.email) |
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except Invitation.DoesNotExist:
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return None |
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def save(self, update_timestamps=True, **kwargs): |
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if update_timestamps:
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if not self.id: |
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self.date_joined = datetime.now()
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self.updated = datetime.now()
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# update date_signed_terms if necessary
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if self.__has_signed_terms != self.has_signed_terms: |
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self.date_signed_terms = datetime.now()
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if not self.id: |
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# set username
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while not self.username: |
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username = uuid.uuid4().hex[:30]
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try:
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AstakosUser.objects.get(username = username) |
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except AstakosUser.DoesNotExist, e:
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self.username = username
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if not self.provider: |
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self.provider = 'local' |
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report_user_event(self)
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self.validate_unique_email_isactive()
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super(AstakosUser, self).save(**kwargs) |
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# set group if does not exist
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groupname = 'shibboleth' if self.provider == 'shibboleth' else 'default' |
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if groupname not in self.__groupnames: |
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try:
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group = Group.objects.get(name = groupname) |
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self.groups.add(group)
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except Group.DoesNotExist, e:
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logger.exception(e) |
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def renew_token(self): |
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md5 = hashlib.md5() |
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md5.update(self.username)
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md5.update(self.realname.encode('ascii', 'ignore')) |
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md5.update(asctime()) |
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self.auth_token = b64encode(md5.digest())
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self.auth_token_created = datetime.now()
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self.auth_token_expires = self.auth_token_created + \ |
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timedelta(hours=AUTH_TOKEN_DURATION) |
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def __unicode__(self): |
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return self.username |
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def conflicting_email(self): |
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q = AstakosUser.objects.exclude(username = self.username)
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q = q.filter(email = self.email)
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if q.count() != 0: |
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return True |
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return False |
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def validate_unique_email_isactive(self): |
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"""
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Implements a unique_together constraint for email and is_active fields.
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"""
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q = AstakosUser.objects.exclude(username = self.username)
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q = q.filter(email = self.email)
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q = q.filter(is_active = self.is_active)
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if q.count() != 0: |
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raise ValidationError({'__all__':[_('Another account with the same email & is_active combination found.')]}) |
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def signed_terms(self): |
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term = get_latest_terms() |
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if not term: |
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return True |
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if not self.has_signed_terms: |
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return False |
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if not self.date_signed_terms: |
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return False |
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if self.date_signed_terms < term.date: |
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self.has_signed_terms = False |
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self.date_signed_terms = None |
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self.save()
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return False |
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return True |
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class ApprovalTerms(models.Model): |
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"""
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Model for approval terms
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"""
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date = models.DateTimeField('Issue date', db_index=True, default=datetime.now()) |
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location = models.CharField('Terms location', max_length=255) |
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class Invitation(models.Model): |
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"""
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Model for registring invitations
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"""
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inviter = models.ForeignKey(AstakosUser, related_name='invitations_sent',
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null=True)
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realname = models.CharField('Real name', max_length=255) |
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username = models.CharField('Unique ID', max_length=255, unique=True) |
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code = models.BigIntegerField('Invitation code', db_index=True) |
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is_consumed = models.BooleanField('Consumed?', default=False) |
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created = models.DateTimeField('Creation date', auto_now_add=True) |
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consumed = models.DateTimeField('Consumption date', null=True, blank=True) |
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def __init__(self, *args, **kwargs): |
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super(Invitation, self).__init__(*args, **kwargs) |
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if not self.id: |
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self.code = _generate_invitation_code()
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def consume(self): |
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self.is_consumed = True |
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self.consumed = datetime.now()
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self.save()
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def __unicode__(self): |
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return '%s -> %s [%d]' % (self.inviter, self.username, self.code) |
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def report_user_event(user): |
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def should_send(user): |
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# report event incase of new user instance
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# or if specific fields are modified
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if not user.id: |
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return True |
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db_instance = AstakosUser.objects.get(id = user.id) |
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for f in BILLING_FIELDS: |
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if (db_instance.__getattribute__(f) != user.__getattribute__(f)):
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return True |
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return False |
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if QUEUE_CONNECTION and should_send(user): |
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from astakos.im.queue.userevent import UserEvent |
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from synnefo.lib.queue import exchange_connect, exchange_send, \ |
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exchange_close
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eventType = 'create' if not user.id else 'modify' |
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body = UserEvent(QUEUE_CLIENT_ID, user, eventType, {}).format() |
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conn = exchange_connect(QUEUE_CONNECTION) |
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parts = urlparse(QUEUE_CONNECTION) |
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exchange = parts.path[1:]
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routing_key = '%s.user' % exchange
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exchange_send(conn, routing_key, body) |
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exchange_close(conn) |
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def _generate_invitation_code(): |
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while True: |
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code = randint(1, 2L**63 - 1) |
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try:
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Invitation.objects.get(code=code) |
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# An invitation with this code already exists, try again
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except Invitation.DoesNotExist:
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return code
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def get_latest_terms(): |
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try:
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term = ApprovalTerms.objects.order_by('-id')[0] |
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return term
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except IndexError: |
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pass
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return None |
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class EmailChangeManager(models.Manager): |
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@transaction.commit_on_success
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def change_email(self, activation_key): |
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"""
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Validate an activation key and change the corresponding
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``User`` if valid.
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If the key is valid and has not expired, return the ``User``
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after activating.
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If the key is not valid or has expired, return ``None``.
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If the key is valid but the ``User`` is already active,
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return ``None``.
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After successful email change the activation record is deleted.
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Throws ValueError if there is already
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"""
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try:
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email_change = self.model.objects.get(activation_key=activation_key)
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if email_change.activation_key_expired():
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email_change.delete() |
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raise EmailChange.DoesNotExist
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# is there an active user with this address?
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try:
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AstakosUser.objects.get(email=email_change.new_email_address) |
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except AstakosUser.DoesNotExist:
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pass
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else:
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raise ValueError(_('The new email address is reserved.')) |
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# update user
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user = AstakosUser.objects.get(pk=email_change.user_id) |
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user.email = email_change.new_email_address |
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user.save() |
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email_change.delete() |
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return user
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except EmailChange.DoesNotExist:
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raise ValueError(_('Invalid activation key')) |
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class EmailChange(models.Model): |
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new_email_address = models.EmailField(_(u'new e-mail address'), help_text=_(u'Your old email address will be used until you verify your new one.')) |
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user = models.ForeignKey(AstakosUser, unique=True, related_name='emailchange_user') |
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requested_at = models.DateTimeField(default=datetime.now()) |
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activation_key = models.CharField(max_length=40, unique=True, db_index=True) |
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objects = EmailChangeManager() |
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def activation_key_expired(self): |
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expiration_date = timedelta(days=EMAILCHANGE_ACTIVATION_DAYS) |
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return self.requested_at + expiration_date < datetime.now() |
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def create_astakos_user(u): |
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try:
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AstakosUser.objects.get(user_ptr=u.pk) |
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except AstakosUser.DoesNotExist:
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extended_user = AstakosUser(user_ptr_id=u.pk) |
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extended_user.__dict__.update(u.__dict__) |
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extended_user.renew_token() |
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extended_user.save() |
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except:
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pass
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def superuser_post_syncdb(sender, **kwargs): |
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# if there was created a superuser
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# associate it with an AstakosUser
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admins = User.objects.filter(is_superuser=True)
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for u in admins: |
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create_astakos_user(u) |
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post_syncdb.connect(superuser_post_syncdb) |
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def superuser_post_save(sender, instance, **kwargs): |
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if instance.is_superuser:
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create_astakos_user(instance) |
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post_save.connect(superuser_post_save, sender=User) |