root / astakos / im / views.py @ 2cbaacd5
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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 logging |
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import socket |
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from random import randint |
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from smtplib import SMTPException |
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from urllib import quote |
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from functools import wraps |
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from django.core.mail import send_mail |
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from django.http import HttpResponse |
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from django.shortcuts import redirect |
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from django.template.loader import render_to_string |
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from django.utils.translation import ugettext as _ |
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from django.core.urlresolvers import reverse |
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from django.contrib.auth.decorators import login_required |
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from django.contrib import messages |
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from django.db import transaction |
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from django.contrib.auth import logout as auth_logout |
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from django.utils.http import urlencode |
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from django.http import HttpResponseRedirect |
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from astakos.im.models import AstakosUser, Invitation |
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from astakos.im.backends import get_backend |
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from astakos.im.util import get_context, get_current_site, prepare_response |
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from astakos.im.forms import * |
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from astakos.im.settings import DEFAULT_CONTACT_EMAIL, DEFAULT_FROM_EMAIL, COOKIE_NAME, IM_MODULES |
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def render_response(template, tab=None, status=200, context_instance=None, **kwargs): |
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"""
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Calls ``django.template.loader.render_to_string`` with an additional ``tab``
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keyword argument and returns an ``django.http.HttpResponse`` with the
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specified ``status``.
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"""
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if tab is None: |
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tab = template.partition('_')[0].partition('.html')[0] |
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kwargs.setdefault('tab', tab)
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html = render_to_string(template, kwargs, context_instance=context_instance) |
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return HttpResponse(html, status=status)
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def requires_anonymous(func): |
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"""
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Decorator checkes whether the request.user is Anonymous and in that case
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redirects to `logout`.
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"""
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@wraps(func)
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def wrapper(request, *args): |
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if not request.user.is_anonymous(): |
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next = urlencode({'next': request.build_absolute_uri()})
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login_uri = reverse(logout) + '?' + next |
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return HttpResponseRedirect(login_uri)
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return func(request, *args)
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return wrapper
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def index(request, login_template_name='im/login.html', profile_template_name='im/profile.html', extra_context={}): |
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"""
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If there is logged on user renders the profile page otherwise renders login page.
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**Arguments**
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``login_template_name``
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A custom login template to use. This is optional; if not specified,
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this will default to ``im/login.html``.
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``profile_template_name``
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A custom profile template to use. This is optional; if not specified,
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this will default to ``im/profile.html``.
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``extra_context``
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An dictionary of variables to add to the template context.
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**Template:**
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im/profile.html or im/login.html or ``template_name`` keyword argument.
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"""
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template_name = login_template_name |
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formclass = 'LoginForm'
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kwargs = {} |
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if request.user.is_authenticated():
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template_name = profile_template_name |
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formclass = 'ProfileForm'
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kwargs.update({'instance':request.user})
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return render_response(template_name,
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form = globals()[formclass](**kwargs),
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context_instance = get_context(request, extra_context)) |
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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 _send_invitation(request, baseurl, inv): |
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sitename, sitedomain = get_current_site(request, use_https=request.is_secure()) |
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subject = _('Invitation to %s' % sitename)
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baseurl = request.build_absolute_uri('/').rstrip('/') |
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url = '%s%s?code=%d' % (baseurl, reverse('astakos.im.views.signup'), inv.code) |
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message = render_to_string('im/invitation.txt', {
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'invitation': inv,
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'url': url,
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'baseurl': baseurl,
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'service': sitename,
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'support': DEFAULT_CONTACT_EMAIL % sitename.lower()})
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sender = DEFAULT_FROM_EMAIL % sitename |
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send_mail(subject, message, sender, [inv.username]) |
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logging.info('Sent invitation %s', inv)
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@login_required
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@transaction.commit_manually
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def invite(request, template_name='im/invitations.html', extra_context={}): |
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"""
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Allows a user to invite somebody else.
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In case of GET request renders a form for providing the invitee information.
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In case of POST checks whether the user has not run out of invitations and then
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sends an invitation email to singup to the service.
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The view uses commit_manually decorator in order to ensure the number of the
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user invitations is going to be updated only if the email has been successfully sent.
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If the user isn't logged in, redirects to settings.LOGIN_URL.
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**Arguments**
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``template_name``
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A custom template to use. This is optional; if not specified,
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this will default to ``im/invitations.html``.
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``extra_context``
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An dictionary of variables to add to the template context.
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**Template:**
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im/invitations.html or ``template_name`` keyword argument.
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**Settings:**
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The view expectes the following settings are defined:
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* LOGIN_URL: login uri
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* ASTAKOS_DEFAULT_CONTACT_EMAIL: service support email
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* ASTAKOS_DEFAULT_FROM_EMAIL: from email
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"""
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status = None
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message = None
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inviter = AstakosUser.objects.get(username = request.user.username) |
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if request.method == 'POST': |
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username = request.POST.get('uniq')
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realname = request.POST.get('realname')
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if inviter.invitations > 0: |
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code = _generate_invitation_code() |
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invitation = Invitation(inviter=inviter, |
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username=username, |
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code=code, |
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realname=realname) |
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invitation.save() |
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try:
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baseurl = request.build_absolute_uri('/').rstrip('/') |
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_send_invitation(request, baseurl, invitation) |
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inviter.invitations = max(0, inviter.invitations - 1) |
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inviter.save() |
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status = messages.SUCCESS |
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message = _('Invitation sent to %s' % username)
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transaction.commit() |
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except (SMTPException, socket.error) as e: |
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status = messages.ERROR |
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message = getattr(e, 'strerror', '') |
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transaction.rollback() |
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else:
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status = messages.ERROR |
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message = _('No invitations left')
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messages.add_message(request, status, message) |
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sent = [{'email': inv.username,
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'realname': inv.realname,
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'is_consumed': inv.is_consumed}
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for inv in inviter.invitations_sent.all()] |
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kwargs = {'inviter': inviter,
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'sent':sent}
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context = get_context(request, extra_context, **kwargs) |
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return render_response(template_name,
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context_instance = context) |
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@login_required
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def edit_profile(request, template_name='im/profile.html', extra_context={}): |
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"""
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Allows a user to edit his/her profile.
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In case of GET request renders a form for displaying the user information.
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In case of POST updates the user informantion and redirects to ``next``
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url parameter if exists.
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If the user isn't logged in, redirects to settings.LOGIN_URL.
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**Arguments**
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``template_name``
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A custom template to use. This is optional; if not specified,
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this will default to ``im/profile.html``.
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``extra_context``
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An dictionary of variables to add to the template context.
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**Template:**
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im/profile.html or ``template_name`` keyword argument.
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**Settings:**
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The view expectes the following settings are defined:
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* LOGIN_URL: login uri
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"""
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form = ProfileForm(instance=request.user) |
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extra_context['next'] = request.GET.get('next') |
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if request.method == 'POST': |
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form = ProfileForm(request.POST, instance=request.user) |
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if form.is_valid():
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try:
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form.save() |
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next = request.POST.get('next')
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if next: |
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return redirect(next) |
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msg = _('Profile has been updated successfully')
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messages.add_message(request, messages.SUCCESS, msg) |
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except ValueError, ve: |
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messages.add_message(request, messages.ERROR, ve) |
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return render_response(template_name,
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form = form, |
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context_instance = get_context(request, |
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extra_context, |
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user=request.user)) |
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def signup(request, on_failure='im/signup.html', on_success='im/signup_complete.html', extra_context={}, backend=None): |
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"""
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Allows a user to create a local account.
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In case of GET request renders a form for providing the user information.
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In case of POST handles the signup.
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The user activation will be delegated to the backend specified by the ``backend`` keyword argument
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if present, otherwise to the ``astakos.im.backends.InvitationBackend``
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if settings.ASTAKOS_INVITATIONS_ENABLED is True or ``astakos.im.backends.SimpleBackend`` if not
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(see backends);
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Upon successful user creation if ``next`` url parameter is present the user is redirected there
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otherwise renders the same page with a success message.
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On unsuccessful creation, renders the same page with an error message.
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**Arguments**
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``on_failure``
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A custom template to render in case of failure. This is optional;
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if not specified, this will default to ``im/signup.html``.
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``on_success``
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A custom template to render in case of success. This is optional;
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if not specified, this will default to ``im/signup_complete.html``.
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``extra_context``
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An dictionary of variables to add to the template context.
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**Template:**
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im/signup.html or ``on_failure`` keyword argument.
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im/signup_complete.html or ``on_success`` keyword argument.
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"""
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try:
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if not backend: |
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backend = get_backend(request) |
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for provider in IM_MODULES: |
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extra_context['%s_form' % provider] = backend.get_signup_form(provider)
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if request.method == 'POST': |
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provider = request.POST.get('provider')
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next = request.POST.get('next', '') |
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form = extra_context['%s_form' % provider]
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if form.is_valid():
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if provider != 'local': |
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url = reverse('astakos.im.target.%s.login' % provider)
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url = '%s?email=%s&next=%s' % (url, form.data['email'], next) |
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if backend.invitation:
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url = '%s&code=%s' % (url, backend.invitation.code)
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return redirect(url)
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else:
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status, message, user = backend.signup(form) |
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if user and user.is_active: |
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return prepare_response(request, user, next=next) |
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messages.add_message(request, status, message) |
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return render_response(on_success,
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context_instance=get_context(request, extra_context)) |
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except (Invitation.DoesNotExist, ValueError), e: |
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messages.add_message(request, messages.ERROR, e) |
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for provider in IM_MODULES: |
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main = provider.capitalize() if provider == 'local' else 'ThirdParty' |
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formclass = '%sUserCreationForm' % main
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extra_context['%s_form' % provider] = globals()[formclass]() |
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return render_response(on_failure,
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context_instance=get_context(request, extra_context)) |
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@login_required
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def send_feedback(request, template_name='im/feedback.html', email_template_name='im/feedback_mail.txt', extra_context={}): |
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"""
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Allows a user to send feedback.
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In case of GET request renders a form for providing the feedback information.
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In case of POST sends an email to support team.
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If the user isn't logged in, redirects to settings.LOGIN_URL.
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**Arguments**
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``template_name``
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A custom template to use. This is optional; if not specified,
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this will default to ``im/feedback.html``.
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``extra_context``
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An dictionary of variables to add to the template context.
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**Template:**
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im/signup.html or ``template_name`` keyword argument.
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**Settings:**
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* LOGIN_URL: login uri
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* ASTAKOS_DEFAULT_CONTACT_EMAIL: List of feedback recipients
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"""
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if request.method == 'GET': |
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form = FeedbackForm() |
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if request.method == 'POST': |
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if not request.user: |
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return HttpResponse('Unauthorized', status=401) |
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form = FeedbackForm(request.POST) |
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if form.is_valid():
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sitename, sitedomain = get_current_site(request, use_https=request.is_secure()) |
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subject = _("Feedback from %s" % sitename)
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from_email = request.user.email |
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recipient_list = [DEFAULT_CONTACT_EMAIL % sitename.lower()] |
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content = render_to_string(email_template_name, { |
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'message': form.cleaned_data['feedback_msg'], |
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'data': form.cleaned_data['feedback_data'], |
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'request': request})
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try:
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send_mail(subject, content, from_email, recipient_list) |
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message = _('Feedback successfully sent')
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status = messages.SUCCESS |
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except (SMTPException, socket.error) as e: |
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status = messages.ERROR |
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message = getattr(e, 'strerror', '') |
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messages.add_message(request, status, message) |
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return render_response(template_name,
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form = form, |
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context_instance = get_context(request, extra_context)) |
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def logout(request, template='registration/logged_out.html', extra_context={}): |
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"""
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Wraps `django.contrib.auth.logout` and delete the cookie.
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"""
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auth_logout(request) |
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response = HttpResponse() |
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response.delete_cookie(COOKIE_NAME) |
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next = request.GET.get('next')
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if next: |
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response['Location'] = next |
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response.status_code = 302
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return response
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context = get_context(request, extra_context) |
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response.write(render_to_string(template, context_instance=context)) |
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return response
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def activate(request): |
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"""
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Activates the user identified by the ``auth`` request parameter
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"""
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token = request.GET.get('auth')
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next = request.GET.get('next')
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try:
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user = AstakosUser.objects.get(auth_token=token) |
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except AstakosUser.DoesNotExist:
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return HttpResponseBadRequest('No such user') |
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user.is_active = True
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user.save() |
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return prepare_response(request, user, next, renew=True) |