root / snf-astakos-app / astakos / im / models.py @ 0caf68e9
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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 collections import defaultdict |
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from south.signals import post_migrate |
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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 django.db.models import Q, Count |
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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, LOGGING_LEVEL |
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QUEUE_CLIENT_ID = 3 # Astakos. |
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logger = logging.getLogger(__name__) |
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class Service(models.Model): |
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name = models.CharField('Name', max_length=255, unique=True, db_index=True) |
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url = models.FilePathField() |
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icon = models.FilePathField(blank=True)
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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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def save(self, **kwargs): |
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if not self.id: |
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self.renew_token()
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self.full_clean()
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super(Service, self).save(**kwargs) |
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def renew_token(self): |
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md5 = hashlib.md5() |
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md5.update(self.name.encode('ascii', 'ignore')) |
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md5.update(self.url.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 __str__(self): |
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return self.name |
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class ResourceMetadata(models.Model): |
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key = models.CharField('Name', max_length=255, unique=True, db_index=True) |
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value = models.CharField('Value', max_length=255) |
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class Resource(models.Model): |
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name = models.CharField('Name', max_length=255, unique=True, db_index=True) |
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meta = models.ManyToManyField(ResourceMetadata) |
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service = models.ForeignKey(Service) |
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def __str__(self): |
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return '%s : %s' % (self.service, self.name) |
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class GroupKind(models.Model): |
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name = models.CharField('Name', max_length=255, unique=True, db_index=True) |
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def __str__(self): |
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return self.name |
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class AstakosGroup(Group): |
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kind = models.ForeignKey(GroupKind) |
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desc = models.TextField('Description', null=True) |
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policy = models.ManyToManyField(Resource, null=True, blank=True, through='AstakosGroupQuota') |
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creation_date = models.DateTimeField('Creation date', default=datetime.now())
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issue_date = models.DateTimeField('Issue date', null=True) |
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expiration_date = models.DateTimeField('Expiration date', null=True) |
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moderation_enabled = models.BooleanField('Moderated membership?', default=True) |
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approval_date = models.DateTimeField('Activation date', null=True, blank=True) |
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estimated_participants = models.PositiveIntegerField('Estimated #participants', null=True) |
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@property
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def is_disabled(self): |
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if not self.approval_date: |
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return True |
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return False |
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@property
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def is_enabled(self): |
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if self.is_disabled: |
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return False |
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if not self.issue_date: |
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return False |
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if not self.expiration_date: |
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return True |
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now = datetime.now() |
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if self.issue_date > now: |
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return False |
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if now >= self.expiration_date: |
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return False |
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return True |
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@property
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def participants(self): |
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return len(self.approved_members) |
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def enable(self): |
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self.approval_date = datetime.now()
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self.save()
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def disable(self): |
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self.approval_date = None |
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self.save()
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def approve_member(self, person): |
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try:
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self.membership_set.create(person=person, date_joined=datetime.now())
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except IntegrityError:
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m = self.membership_set.get(person=person)
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m.date_joined = datetime.now() |
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m.save() |
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def disapprove_member(self, person): |
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self.membership_set.remove(person=person)
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@property
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def members(self): |
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return map(lambda m:m.person, self.membership_set.all()) |
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@property
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def approved_members(self): |
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f = filter(lambda m:m.is_approved, self.membership_set.all()) |
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return map(lambda m:m.person, f) |
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@property
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def quota(self): |
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d = {} |
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for q in self.astakosgroupquota_set.all(): |
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d[q.resource.name] = q.limit |
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return d
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@property
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def has_undefined_policies(self): |
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# TODO: can avoid query?
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return Resource.objects.filter(~Q(astakosgroup=self)).exists() |
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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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activation_sent = models.DateTimeField('Activation sent data', null=True, blank=True) |
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policy = models.ManyToManyField(Resource, null=True, through='AstakosUserQuota') |
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astakos_groups = models.ManyToManyField(AstakosGroup, verbose_name=_('agroups'), blank=True, |
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help_text=_("In addition to the permissions manually assigned, this user will also get all permissions granted to each group he/she is in."),
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through='Membership')
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__has_signed_terms = False
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__groupnames = [] |
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owner = models.ManyToManyField(AstakosGroup, related_name='owner', null=True) |
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class Meta: |
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unique_together = ("provider", "third_party_identifier") |
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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.astakos_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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@property
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def quota(self): |
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d = defaultdict(int)
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for q in self.astakosuserquota_set.all(): |
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d[q.resource.name] += q.limit |
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for g in self.astakos_groups.all(): |
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if not g.is_enabled: |
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continue
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for r, limit in g.quota.iteritems(): |
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d[r] += limit |
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# TODO set default for remaining
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return d
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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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if self.is_active and self.activation_sent: |
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# reset the activation sent
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self.activation_sent = None |
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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 = AstakosGroup.objects.get(name = groupname) |
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Membership(group=group, person=self, date_joined=datetime.now()).save()
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except AstakosGroup.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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msg = 'Token renewed for %s' % self.email |
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logger._log(LOGGING_LEVEL, msg, []) |
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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 Membership(models.Model): |
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person = models.ForeignKey(AstakosUser) |
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group = models.ForeignKey(AstakosGroup) |
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date_requested = models.DateField(default=datetime.now(), blank=True)
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date_joined = models.DateField(null=True, db_index=True, blank=True) |
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class Meta: |
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unique_together = ("person", "group") |
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def save(self, *args, **kwargs): |
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if not self.id: |
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if not self.group.moderation_enabled: |
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self.date_joined = datetime.now()
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super(Membership, self).save(*args, **kwargs) |
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@property
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def is_approved(self): |
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if self.date_joined: |
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return True |
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return False |
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|
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def approve(self): |
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self.date_joined = datetime.now()
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self.save()
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def disapprove(self): |
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self.delete()
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|
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class AstakosGroupQuota(models.Model): |
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limit = models.PositiveIntegerField('Limit')
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resource = models.ForeignKey(Resource) |
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group = models.ForeignKey(AstakosGroup, blank=True)
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class Meta: |
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unique_together = ("resource", "group") |
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|
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class AstakosUserQuota(models.Model): |
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limit = models.PositiveIntegerField('Limit')
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resource = models.ForeignKey(Resource) |
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user = models.ForeignKey(AstakosUser) |
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class Meta: |
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unique_together = ("resource", "user") |
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|
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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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|
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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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|
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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) |
422 |
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) |
426 |
|
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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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|
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def consume(self): |
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self.is_consumed = True |
434 |
self.consumed = datetime.now()
|
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self.save()
|
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|
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def __unicode__(self): |
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return '%s -> %s [%d]' % (self.inviter, self.username, self.code) |
439 |
|
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def report_user_event(user): |
441 |
def should_send(user): |
442 |
# 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: |
445 |
return True |
446 |
try:
|
447 |
db_instance = AstakosUser.objects.get(id = user.id) |
448 |
except AstakosUser.DoesNotExist:
|
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return True |
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for f in BILLING_FIELDS: |
451 |
if (db_instance.__getattribute__(f) != user.__getattribute__(f)):
|
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return True |
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return False |
454 |
|
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if QUEUE_CONNECTION and should_send(user): |
456 |
|
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from astakos.im.queue.userevent import UserEvent |
458 |
from synnefo.lib.queue import exchange_connect, exchange_send, \ |
459 |
exchange_close
|
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|
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eventType = 'create' if not user.id else 'modify' |
462 |
body = UserEvent(QUEUE_CLIENT_ID, user, eventType, {}).format() |
463 |
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) |
468 |
exchange_close(conn) |
469 |
|
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def _generate_invitation_code(): |
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while True: |
472 |
code = randint(1, 2L**63 - 1) |
473 |
try:
|
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Invitation.objects.get(code=code) |
475 |
# 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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|
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def get_latest_terms(): |
480 |
try:
|
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term = ApprovalTerms.objects.order_by('-id')[0] |
482 |
return term
|
483 |
except IndexError: |
484 |
pass
|
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return None |
486 |
|
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class EmailChangeManager(models.Manager): |
488 |
@transaction.commit_on_success
|
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def change_email(self, activation_key): |
490 |
"""
|
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Validate an activation key and change the corresponding
|
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``User`` if valid.
|
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|
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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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|
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If the key is not valid or has expired, return ``None``.
|
498 |
|
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If the key is valid but the ``User`` is already active,
|
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return ``None``.
|
501 |
|
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After successful email change the activation record is deleted.
|
503 |
|
504 |
Throws ValueError if there is already
|
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"""
|
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try:
|
507 |
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() |
510 |
raise EmailChange.DoesNotExist
|
511 |
# is there an active user with this address?
|
512 |
try:
|
513 |
AstakosUser.objects.get(email=email_change.new_email_address) |
514 |
except AstakosUser.DoesNotExist:
|
515 |
pass
|
516 |
else:
|
517 |
raise ValueError(_('The new email address is reserved.')) |
518 |
# update user
|
519 |
user = AstakosUser.objects.get(pk=email_change.user_id) |
520 |
user.email = email_change.new_email_address |
521 |
user.save() |
522 |
email_change.delete() |
523 |
return user
|
524 |
except EmailChange.DoesNotExist:
|
525 |
raise ValueError(_('Invalid activation key')) |
526 |
|
527 |
class EmailChange(models.Model): |
528 |
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.')) |
529 |
user = models.ForeignKey(AstakosUser, unique=True, related_name='emailchange_user') |
530 |
requested_at = models.DateTimeField(default=datetime.now()) |
531 |
activation_key = models.CharField(max_length=40, unique=True, db_index=True) |
532 |
|
533 |
objects = EmailChangeManager() |
534 |
|
535 |
def activation_key_expired(self): |
536 |
expiration_date = timedelta(days=EMAILCHANGE_ACTIVATION_DAYS) |
537 |
return self.requested_at + expiration_date < datetime.now() |
538 |
|
539 |
class AdditionalMail(models.Model): |
540 |
"""
|
541 |
Model for registring invitations
|
542 |
"""
|
543 |
owner = models.ForeignKey(AstakosUser) |
544 |
email = models.EmailField() |
545 |
|
546 |
def create_astakos_user(u): |
547 |
try:
|
548 |
AstakosUser.objects.get(user_ptr=u.pk) |
549 |
except AstakosUser.DoesNotExist:
|
550 |
extended_user = AstakosUser(user_ptr_id=u.pk) |
551 |
extended_user.__dict__.update(u.__dict__) |
552 |
extended_user.renew_token() |
553 |
extended_user.save() |
554 |
except:
|
555 |
pass
|
556 |
|
557 |
def superuser_post_syncdb(sender, **kwargs): |
558 |
# if there was created a superuser
|
559 |
# associate it with an AstakosUser
|
560 |
admins = User.objects.filter(is_superuser=True)
|
561 |
for u in admins: |
562 |
create_astakos_user(u) |
563 |
|
564 |
post_syncdb.connect(superuser_post_syncdb) |
565 |
|
566 |
def set_default_group(sender, **kwargs): |
567 |
try:
|
568 |
default = AstakosGroup.objects.get(name='default')
|
569 |
orphans = AstakosUser.objects.annotate(num_groups=Count('astakos_groups')).filter(num_groups = 0) |
570 |
map ( lambda u: Membership(group=default, person=u).save(), orphans ) |
571 |
except AstakosGroup.DoesNotExist:
|
572 |
pass
|
573 |
|
574 |
post_migrate.connect(set_default_group) |
575 |
|
576 |
def superuser_post_save(sender, instance, **kwargs): |
577 |
if instance.is_superuser:
|
578 |
create_astakos_user(instance) |
579 |
|
580 |
post_save.connect(superuser_post_save, sender=User) |