1 # Copyright 2011 GRNET S.A. All rights reserved.
3 # Redistribution and use in source and binary forms, with or
4 # without modification, are permitted provided that the following
7 # 1. Redistributions of source code must retain the above
8 # copyright notice, this list of conditions and the following
11 # 2. Redistributions in binary form must reproduce the above
12 # copyright notice, this list of conditions and the following
13 # disclaimer in the documentation and/or other materials
14 # provided with the distribution.
16 # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
17 # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
20 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
26 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 # POSSIBILITY OF SUCH DAMAGE.
29 # The views and conclusions contained in the software and
30 # documentation are those of the authors and should not be
31 # interpreted as representing official policies, either expressed
32 # or implied, of GRNET S.A.
34 from django.utils.importlib import import_module
35 from django.core.exceptions import ImproperlyConfigured
36 from django.core.mail import send_mail
37 from django.template.loader import render_to_string
38 from django.contrib import messages
39 from django.core.urlresolvers import reverse
40 from django.utils.translation import ugettext as _
41 from django.db import transaction
43 from urlparse import urljoin
45 from astakos.im.models import AstakosUser, Invitation
46 from astakos.im.forms import *
47 from astakos.im.util import get_invitation
48 from astakos.im.functions import send_verification, send_activation, \
49 send_admin_notification, activate, SendMailError
50 from astakos.im.settings import INVITATIONS_ENABLED, DEFAULT_CONTACT_EMAIL, \
51 DEFAULT_FROM_EMAIL, MODERATION_ENABLED, SITENAME, DEFAULT_ADMIN_EMAIL, RE_USER_EMAIL_PATTERNS
57 logger = logging.getLogger(__name__)
59 def get_backend(request):
61 Returns an instance of an activation backend,
62 according to the INVITATIONS_ENABLED setting
63 (if True returns ``astakos.im.activation_backends.InvitationsBackend`` and if False
64 returns ``astakos.im.activation_backends.SimpleBackend``).
66 If the backend cannot be located ``django.core.exceptions.ImproperlyConfigured``
69 module = 'astakos.im.activation_backends'
70 prefix = 'Invitations' if INVITATIONS_ENABLED else 'Simple'
71 backend_class_name = '%sBackend' %prefix
73 mod = import_module(module)
74 except ImportError, e:
75 raise ImproperlyConfigured('Error loading activation backend %s: "%s"' % (module, e))
77 backend_class = getattr(mod, backend_class_name)
78 except AttributeError:
79 raise ImproperlyConfigured('Module "%s" does not define a activation backend named "%s"' % (module, attr))
80 return backend_class(request)
82 class ActivationBackend(object):
83 def _is_preaccepted(self, user):
84 # return True if user email matches specific patterns
85 for pattern in RE_USER_EMAIL_PATTERNS:
86 if re.match(pattern, user.email):
90 def get_signup_form(self, provider='local', instance=None):
92 Returns a form instance of the relevant class
94 main = provider.capitalize() if provider == 'local' else 'ThirdParty'
95 suffix = 'UserCreationForm'
96 formclass = '%s%s' % (main, suffix)
97 request = self.request
99 if request.method == 'POST':
100 if provider == request.POST.get('provider', ''):
101 initial_data = request.POST
102 return globals()[formclass](initial_data, instance=instance, request=request)
104 def handle_activation(
105 self, user, activation_template_name='im/activation_email.txt',
106 greeting_template_name='im/welcome_email.txt',
107 admin_email_template_name='im/admin_notification.txt'
110 If the user is already active returns immediately.
111 If the user is preaccepted and the email is verified, the account is
112 activated automatically. Otherwise, if the email is not verified,
113 it sends a verification email to the user.
114 If the user is not preaccepted, it sends an email to the administrators
115 and informs the user that the account is pending activation.
119 return RegistationCompleted()
121 if self._is_preaccepted(user):
122 if user.email_verified:
123 activate(user, greeting_template_name)
124 return RegistationCompleted()
126 send_activation(user, activation_template_name)
127 return VerificationSent()
129 send_admin_notification(user, admin_email_template_name)
130 return NotificationSent()
131 except BaseException, e:
135 class InvitationsBackend(ActivationBackend):
137 A activation backend which implements the following workflow: a user
138 supplies the necessary registation information, if the request contains a valid
139 inivation code the user is automatically activated otherwise an inactive user
140 account is created and the user is going to receive an email as soon as an
141 administrator activates his/her account.
143 def __init__(self, request):
144 self.request = request
145 super(InvitationsBackend, self).__init__()
147 def get_signup_form(self, provider='local', instance=None):
149 Returns a form instance of the relevant class
151 raises Invitation.DoesNotExist and ValueError if invitation is consumed
152 or invitation username is reserved.
154 self.invitation = get_invitation(self.request)
155 invitation = self.invitation
156 initial_data = self.get_signup_initial_data(provider)
157 prefix = 'Invited' if invitation else ''
158 main = provider.capitalize()
159 suffix = 'UserCreationForm'
160 formclass = '%s%s%s' % (prefix, main, suffix)
161 return globals()[formclass](initial_data, instance=instance, request=self.request)
163 def get_signup_initial_data(self, provider):
165 Returns the necassary activation form depending the user is invited or not
167 Throws Invitation.DoesNotExist in case ``code`` is not valid.
169 request = self.request
170 invitation = self.invitation
172 if request.method == 'GET':
174 # create a tmp user with the invitation realname
175 # to extract first and last name
176 u = AstakosUser(realname = invitation.realname)
177 initial_data = {'email':invitation.username,
178 'inviter':invitation.inviter.realname,
179 'first_name':u.first_name,
180 'last_name':u.last_name,
183 if provider == request.POST.get('provider', ''):
184 initial_data = request.POST
187 def _is_preaccepted(self, user):
189 Extends _is_preaccepted and if there is a valid, not-consumed invitation
190 code for the specific user returns True else returns False.
192 if super(InvitationsBackend, self)._is_preaccepted(user):
194 invitation = self.invitation
197 if invitation.username == user.email and not invitation.is_consumed:
202 class SimpleBackend(ActivationBackend):
204 A activation backend which implements the following workflow: a user
205 supplies the necessary registation information, an incative user account is
206 created and receives an email in order to activate his/her account.
208 def __init__(self, request):
209 self.request = request
210 super(SimpleBackend, self).__init__()
212 def _is_preaccepted(self, user):
213 if super(SimpleBackend, self)._is_preaccepted(user):
215 if MODERATION_ENABLED:
219 class ActivationResult(object):
220 def __init__(self, message):
221 self.message = message
223 class VerificationSent(ActivationResult):
225 message = _('Verification sent.')
226 super(VerificationSent, self).__init__(message)
228 class NotificationSent(ActivationResult):
230 message = _('Your request for an account was successfully received and is now pending \
231 approval. You will be notified by email in the next few days. Thanks for \
232 your interest in ~okeanos! The GRNET team.')
233 super(NotificationSent, self).__init__(message)
235 class RegistationCompleted(ActivationResult):
237 message = _('Registration completed. You can now login.')
238 super(RegistationCompleted, self).__init__(message)