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# Copyright 2011 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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from django.http import HttpResponse, HttpResponseRedirect, HttpResponseBadRequest
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from django.conf import settings
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from django.template.loader import render_to_string
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from django.core.urlresolvers import reverse
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from django.utils.http import urlencode
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from pithos.im.target.util import prepare_response
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from pithos.im.models import User
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from urllib import unquote
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def login(request):
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    username = '%s@local' % request.POST.get('username')
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    password = request.POST.get('password')
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    if not username:
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        return HttpResponseBadRequest('No user')
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    if not username:
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        return HttpResponseBadRequest('No password')
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    try:
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        user = User.objects.get(uniq=username)
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    except User.DoesNotExist:
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        return HttpResponseBadRequest('No such user')
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    if not password or user.password != password:
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        return HttpResponseBadRequest('Wrong password')
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    if user.state == 'UNVERIFIED':
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        return HttpResponseBadRequest('Unverified account')
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    next = request.POST.get('next')
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    if settings.FORCE_PROFILE_UPDATE and not user.is_verified:
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        profile_url = reverse('pithos.im.views.users_profile', args=(user.id,))
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        next = urlencode({'next': next})
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        profile_url = profile_url + '?' + next
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        return prepare_response(request, user, profile_url)
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    return prepare_response(request, user, next)
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def activate(request):
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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 = User.objects.get(auth_token=token)
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    except User.DoesNotExist:
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        return HttpResponseBadRequest('No such user')
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    user.state = 'ACTIVE'
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    user.save()
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    return prepare_response(request, user, next, renew=True)
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def reset_password(request):
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    if request.method == 'GET':
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        cookie_value = unquote(request.COOKIES.get('_pithos2_a', ''))
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        if cookie_value and '|' in cookie_value:
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            token = cookie_value.split('|', 1)[1]
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        else:
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            token = request.GET.get('auth')
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        next = request.GET.get('next')
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        username = request.GET.get('username')
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        kwargs = {'auth': token,
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                  'next': next,
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                  'username' : username}
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        if not token:
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            kwargs.update({'status': 'error',
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                           'message': 'Missing token'})
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        html = render_to_string('reset.html', kwargs)
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        return HttpResponse(html)
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    elif request.method == 'POST':
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        token = request.POST.get('auth')
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        username = request.POST.get('username')
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        password = request.POST.get('password')
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        next = request.POST.get('next')
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        if not token:
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            status = 'error'
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            message = 'Bad Request: missing token'
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        try:
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            user = User.objects.get(auth_token=token)
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            if username != user.uniq:
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                status = 'error'
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                message = 'Bad Request: username mismatch'
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            else:
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                user.password = password
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                user.status = 'NORMAL'
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                user.save()
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                return prepare_response(request, user, next, renew=True)
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        except User.DoesNotExist:
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            status = 'error'
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            message = 'Bad Request: invalid token'
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        html = render_to_string('reset.html', {
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                'status': status,
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                'message': message})
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        return HttpResponse(html)