Synnefo

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

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# without modification, are permitted provided that the following

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#   1. Redistributions of source code must retain the above

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#      disclaimer.

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#   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.

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# 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

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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

import django.contrib.auth.views as django_auth_views

from astakos.im.util import prepare_response, get_query

from astakos.im.models import PendingThirdPartyUser

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

    ExtendedSetPasswordForm

from astakos.im import settings

import astakos.im.messages as astakos_messages

from astakos.im import auth_providers as auth

from astakos.im.views.decorators import cookie_fix, requires_anonymous, \

    signed_terms_required, requires_auth_provider, login_required

from ratelimit.decorators import ratelimit

retries = settings.RATELIMIT_RETRIES_ALLOWED - 1

rate = str(retries) + '/m'

@requires_auth_provider('local')

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

@csrf_exempt

@requires_anonymous

@cookie_fix

@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

    """

    if request.method == 'GET':

        return HttpResponseRedirect(reverse('login'))

    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)

    provider = auth.get_provider('local')

    if not form.is_valid():

        if third_party_token:

            messages.info(request, provider.get_login_to_add_msg)

        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

    provider = auth.get_provider('local', user)

    if not provider.get_login_policy:

        message = provider.get_login_disabled_msg

        messages.error(request, message)

        return HttpResponseRedirect(reverse('login'))

    message = None

    if not user:

        message = provider.get_authentication_failed_msg

    elif not user.is_active:

        message = user.get_inactive_message('local')

    elif not user.has_auth_provider('local'):

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

        # and let him log in

        if not user.get_available_auth_providers():

            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)

        except PendingThirdPartyUser.DoesNotExist:

            provider = auth.get_provider('local', request.user)

            messages.error(request, provider.get_add_failed_msg)

    provider = user.get_auth_provider('local')

    messages.success(request, provider.get_login_success_msg)

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

    return response

@require_http_methods(["GET"])

@cookie_fix

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

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

    return HttpResponseRedirect(reverse('index'))

@require_http_methods(["GET"])

@cookie_fix

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

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

    return HttpResponseRedirect(reverse('index'))

@cookie_fix

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

    kwargs['post_reset_redirect'] = reverse(

        'astakos.im.views.target.local.password_reset_done')

    return django_auth_views.password_reset(request, *args, **kwargs)

@cookie_fix

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

    kwargs['post_reset_redirect'] = reverse(

        'astakos.im.views.target.local.password_reset_complete')

    return django_auth_views.password_reset_confirm(request, *args, **kwargs)

@cookie_fix

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

    return django_auth_views.password_reset_complete(request, *args, **kwargs)

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

@signed_terms_required

@login_required

@cookie_fix

@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

    provider = auth.get_provider('local', request.user)

    # no local backend user wants to create a password

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

        if not provider.get_add_policy:

            messages.error(request, provider.get_add_disabled_msg)

            return HttpResponseRedirect(reverse('edit_profile'))

        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'] = request.session.session_key

        form = password_change_form(**form_kwargs)

        if form.is_valid():

            form.save()

            if create_password:

                provider = auth.get_provider('local', request.user)

                messages.success(request, provider.get_added_msg)

            else:

                messages.success(request,

                                 astakos_messages.PASSWORD_RESET_CONFIRM_DONE)

            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, {'create_password':

                                                 create_password}))