Adiciona autenticação via Token (#3151)

* Adiciona autenticação via Token

* Adiciona token nos usuários existentes

* Adiciona token automaticamente nos novos usuários

* Adiciona campo para somente leitura com o token do usuário na edição do usuário

* Adiciona função para renovar token do usuário autenticado

* Adiciona botão para renovar token

* Corrige com mudanças solicitadas

* Padroniza nome do html

* Cria página para visualização de perfil

* Redireciona para perfil do usuário quando é criado

* Altera url para página de detalhe do usuário

* Adiciona botões para pesquisa e edição de usuário

* Corrige model de Pesquisa Usuário

* Redireciona pra tela de detalhe

* Altera forma para criar objeto ou estender dicionário

* Corrige ajax para post e id do usuário dono do token

* Adiciona roles in rows

* Adiciona botao de cancelar em editar usuario

* Conserta localizacao de templates HTML

Co-authored-by: eribeiro <edwardr@senado.leg.br>
Co-authored-by: Vinícius Cantuária <cantuariavc@gmail.com>

docs/token-auth.rst

@@ -0,0 +1,17 @@
+1. Realizar o migrate
+
+./manage.py migrate
+
+2. Criar um API Token para usuário e anotar a API Key gerada.
+
+python3 manage.py drf_create_token admin
+
+3. Testar endpoint
+curl http://localhost:8000/api/version -H 'Authorization: Token <API Key>'
+
+4. Exemplo de POST
+curl -d '{"nome_completo”:”Gozer The Gozerian“, "nome_parlamentar": “Gozer”, "sexo":"M"}' -X POST http://localhost:8000/api/parlamentares/parlamentar/ -H 'Authorization: Token <API Key>' -H 'Content-Type: application/json'
+
+Note: If you use TokenAuthentication in production you must ensure that your API is only available over https.
+
+References: https://www.django-rest-framework.org/api-guide/authentication/#tokenauthentication

sapl/api/migrations/0001_initial.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.29 on 2020-04-27 17:40
+from __future__ import unicode_literals
+
+from django.db import migrations
+from django.conf import settings
+from django.contrib.auth import get_user_model
+from rest_framework.authtoken.models import Token
+
+
+def adiciona_token_de_usuarios(apps, schema_editor):
+    for user in get_user_model().objects.all():
+        Token.objects.get_or_create(user=user)
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.RunPython(adiciona_token_de_usuarios)
+    ]

sapl/api/urls.py

@@ -6,7 +6,7 @@ from rest_framework.routers import DefaultRouter
 from sapl.api.deprecated import MateriaLegislativaViewSet, SessaoPlenariaViewSet,\
     AutoresProvaveisListView, AutoresPossiveisListView, AutorListView,\
     ModelChoiceView
-from sapl.api.views import SaplApiViewSetConstrutor
+from sapl.api.views import SaplApiViewSetConstrutor, AppVersionView, recria_token
 
 from .apps import AppConfig
 
@@ -70,7 +70,8 @@ urlpatterns = [
     url(r'^api/', include(deprecated_urlpatterns_api)),
     url(r'^api/', include(urlpatterns_api_doc)),
     url(r'^api/', include(urlpatterns_router)),
-
+    url(r'^api/version', AppVersionView.as_view()),
+    url(r'^api/recriar-token/(?P<pk>\d*)$', recria_token, name="recria_token"),
 
     # implementar caminho para autenticação
     # https://www.django-rest-framework.org/tutorial/4-authentication-and-permissions/

sapl/api/views.py

@@ -4,8 +4,11 @@ from django import apps
 from django.conf import settings
 from django.contrib.contenttypes.models import ContentType
 from django.core.exceptions import FieldError
+from django.core.urlresolvers import reverse_lazy
 from django.db.models import Q
 from django.db.models.fields.files import FileField
+from django.db.models.signals import post_save
+from django.dispatch import receiver
 from django.utils.decorators import classonlymethod
 from django.utils.text import capfirst
 from django.utils.translation import ugettext_lazy as _
@@ -17,10 +20,14 @@ from django_filters.utils import resolve_field
 from django.utils import timezone
 from django.core.exceptions import ObjectDoesNotExist
 from rest_framework import serializers as rest_serializers
-from rest_framework.decorators import action
+from rest_framework.authtoken.models import Token
+from rest_framework.decorators import action, api_view, permission_classes
 from rest_framework.fields import SerializerMethodField
 from rest_framework.response import Response
 from rest_framework.viewsets import ModelViewSet
+from rest_framework.permissions import IsAuthenticated, IsAdminUser
+
+from rest_framework.views import APIView
 
 from sapl.api.forms import SaplFilterSetMixin
 from sapl.api.permissions import SaplModelPermissions
@@ -38,6 +45,21 @@ from sapl.utils import models_with_gr_for_model, choice_anos_com_sessaoplenaria
 from sapl.parlamentares.models import Mandato, Parlamentar, Legislatura
 
 
+@receiver(post_save, sender=settings.AUTH_USER_MODEL)
+def create_auth_token(sender, instance=None, created=False, **kwargs):
+    if created:
+        Token.objects.create(user=instance)
+
+
+@api_view(['POST'])
+@permission_classes([IsAdminUser])
+def recria_token(request, pk):
+    Token.objects.get(user_id=pk).delete()
+    token = Token.objects.create(user_id=pk)
+
+    return Response({"message": "Token recriado com sucesso!", "token": token.key})
+
+
 class BusinessRulesNotImplementedMixin:
     def create(self, request, *args, **kwargs):
         raise Exception(_("POST Create não implementado"))
@@ -617,3 +639,17 @@ class _CronometroViewSet:
         except FieldError as e:
             pass
         return qs
+
+
+class AppVersionView(APIView):
+    permission_classes = (IsAuthenticated,)
+
+    def get(self, request):
+        content = {
+            'name': 'SAPL',
+            'description': 'Sistema de Apoio ao Processo Legislativo',
+            'version': settings.SAPL_VERSION,
+            'user': request.user.username,
+            'is_authenticated': request.user.is_authenticated(),
+        }
+        return Response(content)

sapl/base/forms.py

@@ -177,6 +177,11 @@ class UsuarioEditForm(ModelForm):
     # ROLES = [(g.id, g.name) for g in Group.objects.all().order_by('name')]
     ROLES = []
 
+    token = forms.CharField(
+        required=False,
+        label="Token",
+        max_length=40,
+        widget=forms.TextInput(attrs={'readonly': 'readonly'}))
     first_name = forms.CharField(
         required=False,
         label="Nome",
@@ -206,6 +211,7 @@ class UsuarioEditForm(ModelForm):
         model = get_user_model()
         fields = [
             get_user_model().USERNAME_FIELD,
+            "token",
             "first_name",
             "last_name",
             'password1',
@@ -220,19 +226,24 @@ class UsuarioEditForm(ModelForm):
         super(UsuarioEditForm, self).__init__(*args, **kwargs)
 
         rows = to_row((
-            ('username', 12),
             ('first_name', 6),
             ('last_name', 6),
             ('email', 6),
             ('user_active', 6),
             ('password1', 6),
-            ('password2', 6)))
+            ('password2', 6),
+            ('roles', 12)))
 
         self.helper = SaplFormHelper()
         self.helper.layout = Layout(
+            'username',
+            FieldWithButtons('token', StrictButton('Renovar', id="renovar-token", css_class="btn-outline-primary")),
             rows,
-            'roles',
+            form_actions(
-            form_actions(label='Salvar Alterações'))
+                more=[
+                    HTML("<a href='{% url 'sapl.base:user_detail' object.pk %}' "
+                         "class='btn btn-dark'>Cancelar</a>")],
+                label='Salvar Alterações'))
 
     def clean(self):
         super().clean()

sapl/base/urls.py

@@ -9,8 +9,7 @@ from django.contrib.auth.views import (password_reset, password_reset_complete,
 from django.views.generic.base import RedirectView, TemplateView
 
 from sapl import base
-from sapl.base.views import AutorCrud, ConfirmarEmailView, TipoAutorCrud, get_estatistica
+from sapl.base.views import AutorCrud, ConfirmarEmailView, TipoAutorCrud, get_estatistica, DetailUsuarioView
-
 from sapl.settings import EMAIL_SEND_USER, MEDIA_URL
 
 from .apps import AppConfig
@@ -47,12 +46,10 @@ app_name = AppConfig.name
 
 admin_user = [
     url(r'^sistema/usuario/$', PesquisarUsuarioView.as_view(), name='usuario'),
-    url(r'^sistema/usuario/create$',
+    url(r'^sistema/usuario/create$', CreateUsuarioView.as_view(), name='user_create'),
-        CreateUsuarioView.as_view(), name='user_create'),
+    url(r'^sistema/usuario/(?P<pk>\d+)$', DetailUsuarioView.as_view(), name='user_detail'),
-    url(r'^sistema/usuario/(?P<pk>\d+)/edit$',
+    url(r'^sistema/usuario/(?P<pk>\d+)/edit$', EditUsuarioView.as_view(), name='user_edit'),
-        EditUsuarioView.as_view(), name='user_edit'),
+    url(r'^sistema/usuario/(?P<pk>\d+)/delete$', DeleteUsuarioView.as_view(), name='user_delete')
-    url(r'^sistema/usuario/(?P<pk>\d+)/delete$',
-        DeleteUsuarioView.as_view(), name='user_delete')
 ]
 
 alterar_senha = [

sapl/base/views.py

@@ -26,8 +26,7 @@ from django.utils.http import urlsafe_base64_decode, urlsafe_base64_encode
 from django.utils.safestring import mark_safe
 from django.utils.translation import string_concat
 from django.utils.translation import ugettext_lazy as _
-from django.views.generic import (CreateView, DeleteView, FormView, ListView,
+from django.views.generic import (CreateView, DetailView, DeleteView, FormView, ListView, UpdateView)
-                                  UpdateView)
 from django.views.generic.base import RedirectView, TemplateView
 from django_filters.views import FilterView
 from haystack.views import SearchView
@@ -113,6 +112,8 @@ def filtra_url_materias_em_tramitacao(qr, qs, campo_url, local_ou_status):
 
     return qs.filter(em_tramitacao=True, id__in=id_materias)
 
+from rest_framework.authtoken.models import Token
+
 
 def get_casalegislativa():
     return CasaLegislativa.objects.first()
@@ -1822,7 +1823,7 @@ class ListarProtocolosDuplicadosView(PermissionRequiredMixin, ListView):
 
 
 class PesquisarUsuarioView(PermissionRequiredMixin, FilterView):
-    model = User
+    model = get_user_model()
     filterset_class = UsuarioFilterSet
     permission_required = ('base.list_appconfig',)
     paginate_by = 10
@@ -1841,18 +1842,16 @@ class PesquisarUsuarioView(PermissionRequiredMixin, FilterView):
         return kwargs
 
     def get_context_data(self, **kwargs):
-        context = super(PesquisarUsuarioView,
+        context = super(PesquisarUsuarioView, self).get_context_data(**kwargs)
-                        self).get_context_data(**kwargs)
 
         paginator = context['paginator']
         page_obj = context['page_obj']
 
-        context['page_range'] = make_pagination(
+        context.update({
-            page_obj.number, paginator.num_pages)
+            "page_range": make_pagination(page_obj.number, paginator.num_pages),
-
+            "NO_ENTRIES_MSG": "Nenhum usuário encontrado!",
-        context['NO_ENTRIES_MSG'] = 'Nenhum usuário encontrado!'
+            "title": _("Usuários")
-
+        })
-        context['title'] = _('Usuários')
 
         return context
 
@@ -1879,6 +1878,28 @@ class PesquisarUsuarioView(PermissionRequiredMixin, FilterView):
         return self.render_to_response(context)
 
 
+class DetailUsuarioView(PermissionRequiredMixin, DetailView):
+    model = get_user_model()
+    template_name = "base/usuario_detail.html"
+    permission_required = ('base.detail_appconfig',)
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        user = get_user_model().objects.get(id=self.kwargs['pk'])
+
+        context.update({
+            "user": user,
+            "token": Token.objects.filter(user=user)[0],
+            "roles": [
+                {
+                    "checked": "checked" if g in user.groups.all() else "unchecked",
+                    "group": g.name
+                } for g in Group.objects.all().order_by("name")]
+        })
+
+        return context
+
+
 class CreateUsuarioView(PermissionRequiredMixin, CreateView):
     model = get_user_model()
     form_class = UsuarioCreateForm
@@ -1886,21 +1907,21 @@ class CreateUsuarioView(PermissionRequiredMixin, CreateView):
     fail_message = 'Usuário não criado!'
     permission_required = ('base.add_appconfig',)
 
-    def get_success_url(self):
+    def get_success_url(self, pk):
-        return reverse('sapl.base:usuario')
+        return reverse('sapl.base:user_detail', kwargs={"pk": pk})
 
     def form_valid(self, form):
         data = form.cleaned_data
 
         new_user = get_user_model().objects.create(
             username=data['username'],
-            email=data['email']
+            email=data['email'],
+            first_name=data['firstname'],
+            last_name=data['lastname'],
+            is_superuser=False,
+            is_staff=False
         )
-        new_user.first_name = data['firstname']
-        new_user.last_name = data['lastname']
         new_user.set_password(data['password1'])
-        new_user.is_superuser = False
-        new_user.is_staff = False
         new_user.save()
 
         groups = Group.objects.filter(id__in=data['roles'])
@@ -1908,7 +1929,7 @@ class CreateUsuarioView(PermissionRequiredMixin, CreateView):
             g.user_set.add(new_user)
 
         messages.success(self.request, self.success_message)
-        return HttpResponseRedirect(self.get_success_url())
+        return HttpResponseRedirect(self.get_success_url(new_user.pk))
 
     def form_invalid(self, form):
         messages.error(self.request, self.fail_message)
@@ -1950,11 +1971,12 @@ class DeleteUsuarioView(PermissionRequiredMixin, DeleteView):
 class EditUsuarioView(PermissionRequiredMixin, UpdateView):
     model = get_user_model()
     form_class = UsuarioEditForm
+    template_name = "base/usuario_edit.html"
     success_message = 'Usuário editado com sucesso!'
     permission_required = ('base.change_appconfig',)
 
     def get_success_url(self):
-        return reverse('sapl.base:usuario')
+        return reverse('sapl.base:user_detail', kwargs={"pk": self.kwargs['pk']})
 
     def get_initial(self):
         initial = super().get_initial()
@@ -1962,10 +1984,13 @@ class EditUsuarioView(PermissionRequiredMixin, UpdateView):
         user = get_user_model().objects.get(id=self.kwargs['pk'])
         roles = [str(g.id) for g in user.groups.all()]
 
-        initial['first_name'] = user.first_name
+        initial.update({
-        initial['last_name'] = user.last_name
+            "token": Token.objects.filter(user=user)[0],
-        initial['roles'] = roles
+            "first_name": user.first_name,
-        initial['user_active'] = user.is_active
+            "last_name": user.last_name,
+            "roles": roles,
+            "user_active": user.is_active
+        })
 
         return initial
 

sapl/settings.py

@@ -86,6 +86,7 @@ INSTALLED_APPS = (
     'drf_yasg',
     #'rest_framework_swagger',
     'rest_framework',
+    'rest_framework.authtoken',
     'django_filters',
 
     'easy_thumbnails',
@@ -158,14 +159,6 @@ if DEBUG:
 
 SITE_URL = config('SITE_URL', cast=str, default='')
 
-CACHES = {
-    'default': {
-        'BACKEND': 'speedinfo.backends.proxy_cache',
-        'CACHE_BACKEND': 'django.core.cache.backends.filebased.FileBasedCache',
-        'LOCATION': '/var/tmp/django_cache',
-    }
-}
-
 REST_FRAMEWORK = {
     "UNICODE_JSON": False,
     "DEFAULT_PARSER_CLASSES": (
@@ -178,6 +171,7 @@ REST_FRAMEWORK = {
         "sapl.api.permissions.SaplModelPermissions",
     ),
     "DEFAULT_AUTHENTICATION_CLASSES": (
+        'rest_framework.authentication.TokenAuthentication',
         "rest_framework.authentication.SessionAuthentication",
     ),
     "DEFAULT_PAGINATION_CLASS": "sapl.api.pagination.StandardPagination",
@@ -186,6 +180,14 @@ REST_FRAMEWORK = {
         'django_filters.rest_framework.DjangoFilterBackend',
     ),
 }
+CACHES = {
+    'default': {
+        'BACKEND': 'speedinfo.backends.proxy_cache',
+        'CACHE_BACKEND': 'django.core.cache.backends.filebased.FileBasedCache',
+        'LOCATION': '/var/tmp/django_cache',
+    }
+}
+
 
 
 ROOT_URLCONF = 'sapl.urls'

sapl/templates/auth/user_filter.html

@@ -32,7 +32,7 @@
     			{% for usuario in page_obj %}
     				<tr>
     					<td>
-								<a href="{% url 'sapl.base:user_edit' usuario.pk %}">{{ usuario.username }}</a>
+								<a href="{% url 'sapl.base:user_detail' usuario.pk %}">{{ usuario.username }}</a>
 							</td>
 							<td>{{ usuario.first_name }} {{ usuario.last_name }}</td>
 							<td>{{ usuario.email }}</td>

sapl/templates/base/usuario_detail.html

@@ -0,0 +1,57 @@
+{% extends "crud/detail.html" %}
+{% load i18n %}
+{% load crispy_forms_tags cropping %}
+
+{% block base_content %}
+<div class="actions btn-group float-right " role="group" style="margin: 0px 0px 20px">
+  <a href="{% url 'sapl.base:usuario' %}" class="btn btn-outline-primary">
+    {% blocktrans with verbose_name=view.verbose_name %} Fazer nova pesquisa {% endblocktrans %}
+  </a>
+  <a href="{% url 'sapl.base:user_edit' user.pk %}" class="btn btn-outline-primary">
+    {% blocktrans with verbose_name=view.verbose_name %} Editar usuário {% endblocktrans %}
+  </a>
+</div>
+
+<div>
+  <table class="table table-striped">
+    <tbody>
+      <tr>
+        <th scope="row">Usuário</th>
+        <td>{{ user.username }}</td>
+      </tr>
+      <tr>
+        <th scope="row">Token</th>
+        <td>{{ token }}</td>
+      </tr>
+      <tr>
+        <th scope="row">Nome</th>
+        <td>{% firstof user.first_name "-" %}</td>
+      </tr>
+      <tr>
+        <th scope="row">Sobrenome</th>
+        <td>{% firstof user.last_name "-" %}</td>
+      </tr>
+      <tr>
+        <th scope="row">Endereço de e-mail</th>
+        <td>{% firstof user.email "-" %}</td>
+      </tr>
+      <tr>
+        <th scope="row">Usuário ativo?</th>
+        <td>{% if user.is_active %} Sim {% else %} Não {% endif %}</td>
+      </tr>
+      <tr>
+        <th scope="row">Último acesso</th>
+        <td>{{ user.last_login }}</td>
+      </tr>
+      <tr>
+        <th scope="row">Roles</th>
+        <td><ul style="list-style-type:none">
+          {% for r in roles %}
+            <li><input type="checkbox" {{ r.checked }} disabled> {{r.group }}</li>
+          {% endfor %}
+        </ul></td>
+      </tr>
+    </tbody>
+  </table>
+</div>
+{% endblock base_content %}

sapl/templates/base/usuario_edit.html

@@ -0,0 +1,20 @@
+{% extends "crud/form.html" %}
+{% load i18n %}
+
+{% block extra_js %}
+<script type="text/javascript">
+  $(() => {
+    var $crf_token = $('[name="csrfmiddlewaretoken"]').attr('value');
+    $("#renovar-token").click(() => {
+      $.ajax({
+        url: "{% url 'sapl.api:recria_token' user.id %}",
+        type: "POST",
+        headers: { "X-CSRFToken": $crf_token },
+        dataType: "json",
+        success: (res) => $("#id_token").val(res.token)
+      });
+    });
+  });
+</script>
+
+{% endblock %}