OAuth signin with django rest framework
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st4lk Update social-auth-app-django dependency to v3.1.0 [fixes #70] (#71)
Update social-auth-app-django dependency to v3.1.0 [fixes #70]
Latest commit 0ff7be0 Dec 9, 2018

README.md

Django REST social auth

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OAuth signin with django rest framework.

Requirements

  • python (2.7, 3.5, 3.6)
  • django (1.11, 2.0, 2.1)
  • djangorestframework (>=3.1, <4.0)
  • social-auth-core (>=1.7.0, <2.0)
  • social-auth-app-django (>=3.1, <4.0)
  • [optional] djangorestframework-jwt (>=1.7.2)
  • [optional] django-rest-knox (>=3.2.0)

Release notes

Here

Motivation

To have a resource, that will do very simple thing: take the oauth code from social provider (for example facebook) and return the authenticated user. That's it.

I can't find such util for django rest framework. There are packages (for example django-rest-auth), that take access_token, not the code. Also, i've used to work with awesome library python-social-auth, so it will be nice to use it again (now it is split into social-core and social-app-django). In fact, most of the work is done by this package. Current util brings a little help to integrate django-rest-framework and python-social-auth.

Quick start

  1. Install this package to your python distribution:

     pip install rest-social-auth
    
  2. Do the settings

    Install apps

     INSTALLED_APPS = (
         ...
         'rest_framework',
         'rest_framework.authtoken',  # only if you use token authentication
         'social_django',  # django social auth
         'rest_social_auth',  # this package
         'knox',  # Only if you use django-rest-knox
     )
    

    social auth settings, look documentation for more details

     SOCIAL_AUTH_FACEBOOK_KEY = 'your app client id'
     SOCIAL_AUTH_FACEBOOK_SECRET = 'your app client secret'
     SOCIAL_AUTH_FACEBOOK_SCOPE = ['email', ]  # optional
     SOCIAL_AUTH_FACEBOOK_PROFILE_EXTRA_PARAMS = {'locale': 'ru_RU'}  # optional
    
    
     AUTHENTICATION_BACKENDS = (
         'social_core.backends.facebook.FacebookOAuth2',
         # and maybe some others ...
         'django.contrib.auth.backends.ModelBackend',
     )
    

    Also look optional settings avaliable.

  3. Make sure everything is up do date

     python manage.py migrate
    
  4. Include rest social urls (choose at least one)

    4.1 session authentication

     url(r'^api/login/', include('rest_social_auth.urls_session')),
    

    4.2 token authentication

     url(r'^api/login/', include('rest_social_auth.urls_token')),
    

    4.3 jwt authentication

     url(r'^api/login/', include('rest_social_auth.urls_jwt')),
    

    4.4 knox authentication

     url(r'^api/login/', include('rest_social_auth.urls_knox')),
    
  5. You are ready to login users

    Following examples are for OAuth 2.0.

    5.1 session authentication

    • POST /api/login/social/session/

      input:

        {
            "provider": "facebook",
            "code": "AQBPBBTjbdnehj51"
        }
      

      output:

        {
            "username": "Alex",
            "email": "user@email.com",
            // other user data
        }
      
        + session id in cookies
      

    5.2 token authentication

    • POST /api/login/social/token/

      input:

        {
            "provider": "facebook",
            "code": "AQBPBBTjbdnehj51"
        }
      

      output:

        {
            "token": "68ded41d89f6a28da050f882998b2ea1decebbe0"
        }
      
    • POST /api/login/social/token_user/

      input:

        {
            "provider": "facebook",
            "code": "AQBPBBTjbdnehj51"
        }
      

      output:

        {
            "username": "Alex",
            "email": "user@email.com",
            // other user data
            "token": "68ded41d89f6a28da050f882998b2ea1decebbe0"
        }
      

    5.3 jwt authentication

    • POST /api/login/social/jwt/

    • POST /api/login/social/jwt_user/

      Similar to token authentication, but token is JSON Web Token.

      See JWT.io for details.

      To use it, django-rest-framework-jwt must be installed.

    5.4 knox authentication

    • POST /api/login/social/knox/

    • POST /api/login/social/knox_user/

      Similar to jwt/token authentication, but token is a Django Rest Knox Token.

      To use it, django-rest-knox must be installed.

    User model is taken from settings.AUTH_USER_MODEL.

    At input there is also non-required field redirect_uri. If given, server will use this redirect uri in requests, instead of uri got from settings. This redirect_uri must be equal in front-end request and in back-end request. Back-end will not do any redirect in fact.

    It is also possible to specify provider in url, not in request body. Just append it to the url:

     POST /api/login/social/session/facebook/
    

    Don't need to specify it in body now:

     {
         "code": "AQBPBBTjbdnehj51"
     }
    

OAuth 2.0 workflow with rest-social-auth

  1. Front-end need to know following params for each social provider:

    • client_id # only in case of OAuth 2.0, id of registered application on social service provider
    • redirect_uri # to this url social provider will redirect with code
    • scope=your_scope # for example email
    • response_type=code # same for all oauth2.0 providers
  2. Front-end redirect user to social authorize url with params from previous point.

  3. User confirms.

  4. Social provider redirects back to redirect_uri with param code.

  5. Front-end now ready to login the user. To do it, send POST request with provider name and code:

     POST /api/login/social/session/
    

    with data (form data or json)

     provider=facebook&code=AQBPBBTjbdnehj51
    

    Backend will either signin the user, either signup, either return error.

    Sometimes it is more suitable to specify provider in url, not in request body. It is possible, rest-social-auth will understand that. Following request is the same as above:

     POST /api/login/social/session/facebook/
    

    with data (form data or json)

     code=AQBPBBTjbdnehj51
    

OAuth 1.0a workflow with rest-social-auth

  1. Front-end needs to make a POST request to your backend with the provider name ONLY:

     POST /api/login/social/
    

    with data (form data or json):

     provider=twitter
    

    Or specify provider in url, in that case data will be empty:

     POST /api/login/social/twitter
    
  2. The backend will return a short-lived oauth_token request token in the response. This can be used by the front-end to perform authentication with the provider.

  3. User confirms. In the case of Twitter, they will then return the following data to your front-end:

     {
       "redirect_state":  "...bHrz2x0wy43",
       "oauth_token"   :  "...AAAAAAAhD5u",
       "oauth_verifier":  "...wDBdTR7CYdR"
     }
    
  4. Front-end now ready to login the user. To do it, send POST request again with provider name and the oauth_token and oauth_verifier you got from the provider:

     POST /api/login/social/
    

    with data (form data or json)

     provider=twitter&oauth_token=AQBPBBTjbdnehj51&oauth_verifier=wDBdTR7CYdR
    

    Backend will either signin the user, or signup, or return an error. Same as in OAuth 2.0, you can specify provider in url, not in body:

     POST /api/login/social/twitter
    

This flow is the same as described in satellizer. This angularjs module is used in example project.

Note

If you use token (or jwt) authentication and OAuth 1.0, then you still need 'django.contrib.sessions' app (it is not required for OAuth 2.0 and token authentication). This is because python-social-auth will store some data in session between requests to OAuth 1.0 provider.

rest-social-auth purpose

As we can see, our backend must implement resource for signin the user.

Django REST social auth provides means to easily implement such resource.

List of oauth providers

OAuth 1.0 and OAuth 2.0 providers are supported.

Look python-social-auth for full list. Name of provider is taken from corresponding backend.name property of particular backed class in python-social-auth.

For example for facebook backend we see:

class FacebookOAuth2(BaseOAuth2):
    name = 'facebook'

Here are some provider names:

Provider provider name
Facebook facebook
Google google-oauth2
Vkontakte vk-oauth2
Instagram instagram
Github github
Yandex yandex-oauth2
Twitter twitter
Others ...

Settings

  • REST_SOCIAL_OAUTH_REDIRECT_URI

    Default: '/'

    Defines redirect_uri. This redirect must be the same in both authorize request (made by front-end) and access token request (made by back-end) to OAuth provider.

    To override the relative path (url path or url name are both supported):

      REST_SOCIAL_OAUTH_REDIRECT_URI = '/oauth/redirect/path/'
      # or url name
      REST_SOCIAL_OAUTH_REDIRECT_URI = 'redirect_url_name'
    

    Note, in case of url name, backend name will be provided to url resolver as argument.

  • REST_SOCIAL_DOMAIN_FROM_ORIGIN

    Default: True

    Sometimes front-end and back-end are run on different domains. For example frontend at 'myproject.com', and backend at 'api.myproject.com'.

    If True, domain will be taken from request origin, if origin is defined. So in current example domain will be 'myproject.com', not 'api.myproject.com'. Next, this domain will be joined with path from REST_SOCIAL_OAUTH_REDIRECT_URI settings.

    To be clear, suppose we have following settings (defaults):

      REST_SOCIAL_OAUTH_REDIRECT_URI = '/'
      REST_SOCIAL_DOMAIN_FROM_ORIGIN = True
    

    Front-end is running on domain 'myproject.com', back-end - on 'api.myproject.com'. Back-end will use following redirect_uri:

      myproject.com/
    

    And with following settings:

      REST_SOCIAL_OAUTH_REDIRECT_URI = '/'
      REST_SOCIAL_DOMAIN_FROM_ORIGIN = False
    

    redirect_uri will be:

      api.myproject.com/
    

    Also look at django-cors-headers if such architecture is your case.

  • REST_SOCIAL_OAUTH_ABSOLUTE_REDIRECT_URI

    Default: None

    Full redirect uri (domain and path) can be hardcoded

      REST_SOCIAL_OAUTH_ABSOLUTE_REDIRECT_URI = 'http://myproject.com/'
    

    This settings has higher priority than REST_SOCIAL_OAUTH_REDIRECT_URI and REST_SOCIAL_DOMAIN_FROM_ORIGIN. I.e. if this settings is defined, other will be ignored. But redirect_uri param from request has higher priority than any setting.

  • REST_SOCIAL_LOG_AUTH_EXCEPTIONS

    Default: True

    When False will not log social auth authentication exceptions.

Customization

First of all, customization provided by python-social-auth is also avaliable. For example, use nice mechanism of pipeline to do any action you need during login/signin.

Second, you can override any method from current package. Specify serializer for each view by subclassing the view.

To do it

  • define your own url:

      url(r'^api/login/social/$', MySocialView.as_view(), name='social_login'),
    
  • define your serializer

      from rest_framework import serializers
      from django.contrib.auth import get_user_model
    
      class MyUserSerializer(serializers.ModelSerializer):
    
          class Meta:
              model = get_user_model()
              exclude = ('password', 'user_permissions', 'groups')
    
  • define view

      from rest_social_auth.views import SocialSessionAuthView
      from .serializers import MyUserSerializer
    
      class MySocialView(SocialSessionAuthView):
          serializer_class = MyUserSerializer
    

Check the code of the lib, there is not much of it.

Example

There is an example project.

  • clone repo

    git clone https://github.com/st4lk/django-rest-social-auth.git
  • step in example_project/

    cd django-rest-social-auth/example_project
  • create database (sqlite3)

    PYTHONPATH='../' python manage.py migrate

    Note: You can avoid PYTHONPATH='../' if you install the package locally: pip install rest-social-auth or python setup.py install. But to my mind the PYTHONPATH prefix is more useful. No need to install anything and code of rest-social-auth will be always up-to-date, even if you change source code.

  • run development server

    PYTHONPATH='../' python manage.py runserver

Example project already contains facebook, google and twitter app ids and secrets. These apps are configured to work only with http://127.0.0.1:8000/ domain. Google and Facebook providers support http://localhost:8000/ as well. But Twitter only support 127.0.0.1. So, to play with it, visit http://127.0.0.1:8000/

Example project uses satellizer angularjs module.

Contributors