Synnefo » astakos

# Copyright 2011-2012 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

#

#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

#

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, this list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

#

# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

# or implied, of GRNET S.A.

from django.shortcuts import render_to_response

from django.template import RequestContext

from django.contrib import messages

from django.utils.translation import ugettext as _

from django.views.decorators.csrf import csrf_exempt

from django.views.decorators.http import require_http_methods

from astakos.im.util import prepare_response, get_query

from astakos.im.views import requires_anonymous

from astakos.im.forms import LoginForm

from astakos.im.settings import RATELIMIT_RETRIES_ALLOWED

import astakos.im.messages as astakos_messages

from ratelimit.decorators import ratelimit

retries = RATELIMIT_RETRIES_ALLOWED - 1

rate = str(retries) + '/m'

@require_http_methods(["GET", "POST"])

@csrf_exempt

@requires_anonymous

@ratelimit(field='username', method='POST', rate=rate)

def login(request, on_failure='im/login.html'):

    """

    on_failure: the template name to render on login failure

    """

    was_limited = getattr(request, 'limited', False)

    form = LoginForm(data=request.POST,

                     was_limited=was_limited,

                     request=request)

    next = get_query(request).get('next', '')

    if not form.is_valid():

        return render_to_response(on_failure,

                                  {'login_form': form,

                                   'next': next},

                                  context_instance=RequestContext(request))

    # get the user from the cash

    user = form.user_cache

    message = None

    if not user:

        message = _(astakos_messages.ACCOUNT_AUTHENTICATION_FAILED)

    elif not user.is_active:

        message = _(astakos_messages.ACCOUNT_INACTIVE)

    if message:

        messages.error(request, message)

        return render_to_response(on_failure,

                                  {'form': form},

                                  context_instance=RequestContext(request))

    return prepare_response(request, user, next)