local.py

# Copyright 2011-2012 GRNET S.A. All rights reserved.
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from django.http import HttpResponseBadRequest
from django.shortcuts import render_to_response
from django.template import RequestContext
from django.contrib.auth import authenticate
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.models import AstakosUser
from astakos.im.forms import LoginForm
from astakos.im.settings import RATELIMIT_RETRIES_ALLOWED

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 = _('Cannot authenticate account')
    elif not user.is_active:
        message = _('Inactive account')
    if message:
        messages.add_message(request, messages.ERROR, message)
        return render_to_response(on_failure,
                                  {'form':form},
                                  context_instance=RequestContext(request))
    
    return prepare_response(request, user, next)