Synnefo

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

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from django.http import HttpResponseRedirect

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 django.core.urlresolvers import reverse

from django.contrib.auth.decorators import login_required

from astakos.im.util import prepare_response, get_query

from astakos.im.views import requires_anonymous, signed_terms_required

from astakos.im.models import PendingThirdPartyUser

from astakos.im.forms import LoginForm, ExtendedPasswordChangeForm, \

                             ExtendedSetPasswordForm

from astakos.im.settings import (RATELIMIT_RETRIES_ALLOWED,

                                ENABLE_LOCAL_ACCOUNT_MIGRATION)

import astakos.im.messages as astakos_messages

from astakos.im.views import requires_auth_provider

from astakos.im import settings

from astakos.im import auth_providers

from ratelimit.decorators import ratelimit

retries = RATELIMIT_RETRIES_ALLOWED - 1

rate = str(retries) + '/m'

@requires_auth_provider('local', login=True)

@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', '')

    third_party_token = get_query(request).get('key', False)

    if not form.is_valid():

        if third_party_token:

            messages.info(request, astakos_messages.AUTH_PROVIDER_LOGIN_TO_ADD)

        return render_to_response(

            on_failure,

            {'login_form':form,

             'next':next,

             'key': third_party_token},

            context_instance=RequestContext(request))

    # get the user from the cache

    user = form.user_cache

    message = None

    if not user:

        message = _(astakos_messages.ACCOUNT_AUTHENTICATION_FAILED)

    elif not user.is_active:

        message = user.get_inactive_message()

    elif not user.can_login_with_auth_provider('local'):

        # valid user logged in with no auth providers set, add local provider

        # and let him log in

        if user.auth_providers.count() == 0:

            user.add_auth_provider('local')

        else:

            message = _(astakos_messages.NO_LOCAL_AUTH)

    if message:

        messages.error(request, message)

        return render_to_response(on_failure,

                                  {'login_form': form},

                                  context_instance=RequestContext(request))

    response = prepare_response(request, user, next)

    if third_party_token:

        # use requests to assign the account he just authenticated with with

        # a third party provider account

        try:

            request.user.add_pending_auth_provider(third_party_token)

            messages.success(request, _(astakos_messages.AUTH_PROVIDER_ADDED))

        except PendingThirdPartyUser.DoesNotExist:

            messages.error(request, _(astakos_messages.AUTH_PROVIDER_ADD_FAILED))

    provider = auth_providers.get_provider('local')

    messages.success(request, _(astakos_messages.LOGIN_SUCCESS) %

                     _(provider.get_login_message_display))

    response.set_cookie('astakos_last_login_method', 'local')

    return response

@require_http_methods(["GET"])

def password_reset_done(request, *args, **kwargs):

    messages.success(request, _(astakos_messages.PASSWORD_RESET_DONE))

    return HttpResponseRedirect(reverse('index'))

@require_http_methods(["GET"])

def password_reset_confirm_done(request, *args, **kwargs):

    messages.success(request, _(astakos_messages.PASSWORD_RESET_CONFIRM_DONE))

    return HttpResponseRedirect(reverse('index'))

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

@signed_terms_required

@login_required

@requires_auth_provider('local', login=True)

def password_change(request, template_name='registration/password_change_form.html',

                    post_change_redirect=None, password_change_form=ExtendedPasswordChangeForm):

    create_password = False

    # no local backend user wants to create a password

    if not request.user.has_auth_provider('local'):

        create_password = True

        password_change_form = ExtendedSetPasswordForm

    if post_change_redirect is None:

        post_change_redirect = reverse('edit_profile')

    if request.method == "POST":

        form_kwargs = dict(

            user=request.user,

            data=request.POST,

        )

        if not create_password:

            form_kwargs['session_key'] = session_key=request.session.session_key

        form = password_change_form(**form_kwargs)

        if form.is_valid():

            form.save()

            return HttpResponseRedirect(post_change_redirect)

    else:

        form = password_change_form(user=request.user)

    return render_to_response(template_name, {

        'form': form,

    }, context_instance=RequestContext(request))