Djagno DSM Authentication

Requirements

• python >= 3.6
• django >= 2.0
• social-auth-app-django
• djangorestframework-simplejwt

Installation

pip install dsm-django-socialauth

Usage

Prerequisite

• must be PROTOCOL://HOST/oauth/complete/dsmauth/

note: Callback URL must be same with decarelation in urls.py

in this example use http://127.0.0.1/oauth/complete/dsmauth/

in setting.py

INSTALLED_APPS = [
    'dsmauth', # must be top of installed app
    ...
    'social_django',
    'rest_framework', # optional for use /authen/api/account/me/
    ...
]

add authentication backend in setting.py

AUTHENTICATION_BACKENDS = [
    ...
    'django.contrib.auth.backends.ModelBackend',
    'dsmauth.backend.dsmOAuth2',
    ...
]

set client id and client secret in setting.py

SOCIAL_AUTH_DSMAUTH_KEY = '<client_id>'
SOCIAL_AUTH_DSMAUTH_SECRET = '<client_secret>'

Sample SOCIAL_AUTH_PIPELINE

SOCIAL_AUTH_PIPELINE = [ 
    'social_core.pipeline.social_auth.social_details',
    'social_core.pipeline.social_auth.social_uid',
    'social_core.pipeline.social_auth.social_user',
    'social_core.pipeline.user.get_username',
    'social_core.pipeline.user.create_user',
    'social_core.pipeline.social_auth.associate_user',
    'social_core.pipeline.social_auth.load_extra_data',
    'social_core.pipeline.user.user_details',
    'social_core.pipeline.social_auth.associate_by_email',
]

Add login redirect

LOGIN_REDIRECT_URL='<path to redirect>'

Setauth server name and url

OAUTH_DSM_SERVER_BASEURL = 'oauth.data.storemesh.com'
BASE_BACKEND_URL = '<backend domain> eg http://localhost:8000'

(optional) If use in internal ip address for DSM VMs

OAUTH_DSM_SCHEME = "<http or https>"
OAUTH_INTERNAL_IP = "<internal oauth provider ip address>"

add setting authen via simple jwt

REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': [
        'rest_framework_simplejwt.authentication.JWTAuthentication',
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authentication.BasicAuthentication',
    ],
}

from datetime import timedelta
SIMPLE_JWT = {
    'ACCESS_TOKEN_LIFETIME': timedelta(hours=1),
    'REFRESH_TOKEN_LIFETIME': timedelta(days=1),
    'ROTATE_REFRESH_TOKENS': False,
    'BLACKLIST_AFTER_ROTATION': True,

    'ALGORITHM': 'HS256',
    'SIGNING_KEY': SECRET_KEY,
    'VERIFYING_KEY': None,
    'AUDIENCE': None,
    'ISSUER': None,

    'AUTH_HEADER_TYPES': ('Bearer',),
    'USER_ID_FIELD': 'id',
    'USER_ID_CLAIM': 'user_id',

    'UPDATE_LAST_LOGIN':True
}

See more detail about social-app-django in (https://github.com/python-social-auth/social-app-django)

in urls.py

from django.urls import path, include
from dsmauth.complete import complete

urlpatterns = [
    ...
    path('oauth/complete/<str:backend>/', complete, name='complete'),
    path('oauth/', include('social_django.urls', namespace='social')),
    path('authen/', include('dsmauth.urls'))

    ...
]

in template

• template

    ...
        <a href="{% url 'social:begin' 'dsmauth' %}">Login with DSM</a>
        <a href="{% url 'logout' %}"> LOGOUT</a>
    ...

• signin with next

    ...
    <a 
        href="{% url 'social:begin' 'dsmauth' %}?next={{ request.scheme }}://{{ request.get_host }}{% url 'admin:index' %}"
    >
        Login with dsm
    </a> 
    ...

If use backend-frontend (Client Site Render)

can use authentication with JWT

in settings.py

BASE_FRONTEND_URL='http://localhost:3000/'

Authentication step

1. frontend href to <BACKEND_URL>/oauth/login/dsmauth
   • optional <BACKEND_URL>/oauth/login/dsmauth/?callback=<FRONTEND_URI>
     • FRONTEND_URI : domain frontend or localhost:xxxx
     • default: use in backend settings BASE_FRONTEND_URL and BASE_BACKEND_URL
2. backend authentication with oauth server
3. if authen complete backend callback to frontend <BASE_FRONTEND_URL>/callback?token=<REFRESH_TOKEN>

• note BASE_FRONTEND_URL in backend/settings.py previous step

4. frontend request access token with refresh token via

   • request

   [POST] : <BACKEND_URL>/authen/token/refresh/
   body : {
       "refresh" : "<REFRESH_TOKEN IN STEP 3>"
   }
   

   • reponse

   {
       "access": "eyJ0eXAiOiJKV1Qi...ifZOpwg"
   }
   

5. frontend collect access(access token) for request api

How to use

• request to backend

URL : <BACKEND>/api/xxx
HEADER : {
    'Authorization': "Bearer <ACCESS_TOKEN>"
}

logout / sign out

• logout href to <BACKEND_URL>/authen/logout/
  • optional <BACKEND_URL>/authen/logout/?callback=<FRONTEND_URI>
    • FRONTEND_URI : domain frontend or localhost:xxxx
    • default: use in backend settings BASE_FRONTEND_URL and BASE_BACKEND_URL

Optional setup log

log header

add settings in settings.py

MIDDLEWARE = [
    ...
    'dsmauth.middleware.LogHeaderMiddleware',
    ...
]

it's can get log in response header

• X-Username : (string) username ex mike
• X-Error : (string) short traceback python exception ex

  File /backend/searchapp/views.py, line 6, in error
  i = 10/0
  ZeroDivisionError: division by zero
  

log database

MIDDLEWARE = [
    ...
    
    'dsmauth.middleware.RequestLoggingMiddleware'
]

• if have exclude paths

ACCESS_LOOGING_EXCLUDE_PATHS = [
    r'.*status.*'
]

Optional use JWT middleware

MIDDLEWARE = [
    ...
    'dsmauth.middleware.JWTauthenticationMiddleware',
    ...
]

if pass jwt token in header can use request.user

SignIn Admin via Oauth

• edit urls.py

...
admin.site.login_template = 'admin/custom-login.html'
admin.site.index_template = 'admin/custom-index.html'
admin.site.site_title = "<PROJECT NAME>"
admin.site.site_header = "<PROJECT NAME>"
...

Get user info

[GET]: <BASE_URI>/authen/api/account/me/

{
    "id": 1,
    "user": "system_admin",
    "is_staff": true,
    "is_superuser": true,
    "first_name": "system",
    "last_name": "admin",
    "email": "system_admin@email.com",
    "image": null,
    "role": [
        {
            "name": "DataUser"
        },
        {
            "name": "SystemAdmin"
        }
    ],
    "permission": [
        3,
        7
    ]
}

For Developer

• .env

DSM_AUTH_KEY=''
DSM_AUTH_SECRET=''
DSM_AUTH_BASEURL=''
DSM_AUTH_SCHEME=''
DSM_AUTH_INTERNAL_IP=''

• settings.py

SOCIAL_AUTH_DSMAUTH_KEY = os.environ.get('DSM_AUTH_KEY')
SOCIAL_AUTH_DSMAUTH_SECRET = os.environ.get('DSM_AUTH_SECRET')
OAUTH_DSM_SERVER_BASEURL = os.environ.get('DSM_AUTH_BASEURL')
OAUTH_DSM_SCHEME = os.environ.get('DSM_AUTH_SCHEME')
OAUTH_INTERNAL_IP = os.environ.get('DSM_AUTH_INTERNAL_IP')