juanifioren 21a7aafd1c Merge branch 'v0.2.x' of https://github.com/juanifioren/django-oidc-provider into v0.2.x

2016-01-25 18:02:03 -03:00

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Welcome to the Docs!

Django OIDC Provider can help you providing out of the box all the endpoints, data and logic needed to add OpenID Connect capabilities to your Django projects.

This project is still in DEVELOPMENT and is rapidly changing.

Before getting started there are some important things that you should know:

Although OpenID was built on top of OAuth2, this isn't an OAuth2 server. Maybe in a future it will be.
Despite that implementation MUST support TLS. You can make request without using SSL. There is no control on that.
This cover Authorization Code flow and Implicit flow, NO support for Hybrid flow at this moment.
Only support for requesting Claims using Scope Values.

Requirements
Installation
Users And Clients
Server Keys
Templates
Standard Claims
Server Endpoints
Running Tests
Relying Parties
Settings

Requirements

Python: 2.7 3.4
Django: 1.7 1.8 1.9

Installation

If you want to get started fast see our /example_project folder.

Install the package using pip.

$ pip install django-oidc-provider

Add it to your apps.

INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'oidc_provider',
    # ...
)

Add the provider urls.

urlpatterns = patterns('',
    # ...
    url(r'^openid/', include('oidc_provider.urls', namespace='oidc_provider')),
    # ...
)

Generate server RSA key and run migrations (if you don't).

$ python manage.py creatersakey
$ python manage.py migrate

Add required variables to your project settings.

SITE_URL = 'http://localhost:8000'
LOGIN_URL = '/accounts/login/'

Users And Clients

User and client creation it's up to you. This is because is out of the scope in the core implementation of OIDC. So, there are different ways to create your Clients. By displaying a HTML form or maybe if you have internal thrusted Clients you can create them programatically.

Server Keys

Server RSA keys are used to sign/encrypt ID Tokens. These keys are stored in the RSAKey model. So the package will automatically generate public keys and expose them in the jwks_uri endpoint.

You can easily create them with the admin:

Or use python manage.py creatersakey command.

GET /openid/jwks HTTP/1.1
Host: localhost:8000

{  
  "keys":[  
    {  
      "use":"sig",
      "e":"AQAB",
      "kty":"RSA",
      "alg":"RS256",
      "n":"3Gm0pS7ij_SnY96wkbaki74MUYJrobXecO6xJhvmAEEhMHGpO0m4H2nbOWTf6Jc1FiiSvgvhObVk9xPOM6qMTQ5D5pfWZjNk99qDJXvAE4ImM8S0kCaBJGT6e8JbuDllCUq8aL71t67DhzbnoBsKCnVOE1GJffpMcDdBUYkAsx8",
      "kid":"a38ea7fbf944cc060eaf5acc1956b0e3"
    }
  ]
}

Templates

Add your own templates files inside a folder named templates/oidc_provider/. You can copy the sample html here and edit them with your own styles.

authorize.html

<h1>Request for Permission</h1>

<p>Client <strong>{{ client.name }}</strong> would like to access this information of you ...</p>

<form method="post" action="{% url 'oidc_provider:authorize' %}">
    
    {% csrf_token %}

    {{ hidden_inputs }}

    <ul>
    {% for scope in params.scope %}
        <li>{{ scope | capfirst }}</li>
    {% endfor %}
    </ul>

    <input name="allow" type="submit" value="Authorize" />

</form>

error.html

<h3>{{ error }}</h3>
<p>{{ description }}</p>

Standard Claims

This subset of OpenID Connect defines a set of standard Claims. They are returned in the UserInfo Response.

The package comes with a setting called OIDC_USERINFO, basically it refers to a class that MUST have a class-method named get_by_user, this will be called with a Django User instance and returns an object with all the claims of the user as attributes.

List of all the attributes grouped by scopes:

profile	email	phone	address
name	email	phone_number	address_formatted
given_name	email_verified	phone_number_verified	address_street_address
family_name			address_locality
middle_name			address_region
nickname			address_postal_code
preferred_username			address_country
profile
picture
website
gender
birthdate
zoneinfo
locale
updated_at

Example using a django model:

from django.conf import settings
from django.db import models


class UserInfo(models.Model):

    GENDER_CHOICES = [
        ('F', 'Female'),
        ('M', 'Male'),
    ]

    user = models.OneToOneField(settings.AUTH_USER_MODEL, primary_key=True)
    
    given_name = models.CharField(max_length=255, blank=True, null=True)
    family_name = models.CharField(max_length=255, blank=True, null=True)
    gender = models.CharField(max_length=100, choices=GENDER_CHOICES, null=True)
    birthdate = models.DateField(null=True)
    updated_at = models.DateTimeField(auto_now=True, null=True)

    email_verified = models.NullBooleanField(default=False)

    phone_number = models.CharField(max_length=255, blank=True, null=True)
    phone_number_verified = models.NullBooleanField(default=False)

    address_locality = models.CharField(max_length=255, blank=True, null=True)
    address_country = models.CharField(max_length=255, blank=True, null=True)

    @classmethod
    def get_by_user(cls, user):
        return cls.objects.get(user=user)

Server Endpoints

/authorize endpoint

Example of an OpenID Authentication Request using the Authorization Code flow.

GET /openid/authorize?client_id=123&redirect_uri=http%3A%2F%2Fexample.com%2F&response_type=code&scope=openid%20profile%20email&state=abcdefgh HTTP/1.1
Host: localhost:8000
Cache-Control: no-cache
Content-Type: application/x-www-form-urlencoded

After the user accepts and authorizes the client application, the server redirects to:

http://example.com/?code=5fb3b172913448acadce6b011af1e75e&state=abcdefgh

The code param will be use it to obtain access token.

/token endpoint

POST /openid/token/ HTTP/1.1
Host: localhost:8000
Cache-Control: no-cache
Content-Type: application/x-www-form-urlencoded
    client_id=123&client_secret=456&redirect_uri=http%253A%252F%252Fexample.com%252F&grant_type=authorization_code&code=5fb3b172913448acadce6b011af1e75e&state=abcdefgh

/userinfo endpoint

POST /openid/userinfo/ HTTP/1.1
Host: localhost:8000
Authorization: Bearer 2b5e4400bfcf47aa9f6abb1d7432fc60

Running Tests

Use tox for running tests in each of the environments, also to run coverage among:

$ tox

If you have a Django project properly configured with the package. Then just run tests as normal.

$ python manage.py test --settings oidc_provider.tests.app.settings oidc_provider

Also tests run on every commit to the project, we use travis for this.

Relying Parties

This provider was tested (and fully works) with these OIDC Clients:

Drupal OpenID Connect
Passport OpenID Connect (for NodeJS)
OIDCAndroidLib (for Android)
Amazon IAM OpenID Connect Identity Provider (for AWS)
Amazon Cognito (for AWS Identity pools)

Settings

SITE_URL

REQUIRED. The OP server url.

str. For example http://localhost:8000.

LOGIN_URL

REQUIRED. Used to log the user in. Read more in Django docs.

str. Default is /accounts/login/.

OIDC_AFTER_USERLOGIN_HOOK

OPTIONAL. A string with the location of your function. Provide a way to plug into the process after the user has logged in, typically to perform some business logic.

Default is:

def default_hook_func(request, user, client):
    return None

Return None if you want to continue with the flow.

The typical situation will be checking some state of the user or maybe redirect him somewhere. With request you have access to all OIDC parameters. Remember that if you redirect the user to another place then you need to take him back to the authorize endpoint (use request.get_full_path() as the value for a "next" parameter).

OIDC_CODE_EXPIRE

OPTIONAL.

int. Expressed in seconds. Default is 60*10.

OIDC_EXTRA_SCOPE_CLAIMS

OPTIONAL. A string with the location of your class. Default is oidc_provider.lib.claims.AbstractScopeClaims.

Used to add extra scopes specific for your app. This class MUST inherit AbstractScopeClaims.

OpenID Connect Clients will use scope values to specify what access privileges are being requested for Access Tokens.

Here you have the standard scopes defined by the protocol.

Check out an example of how to implement it:

from oidc_provider.lib.claims import AbstractScopeClaims

class MyAppScopeClaims(AbstractScopeClaims):

    def setup(self):
        # Here you can load models that will be used
        # in more than one scope for example.
        # print self.user
        # print self.scopes
        try:
            self.some_model = SomeModel.objects.get(user=self.user)
        except SomeModel.DoesNotExist:
            # Create an empty model object.
            self.some_model = SomeModel()

    def scope_books(self, user):

        # Here you can search books for this user.

        dic = {
            'books_readed': books_readed_count,
        }

        return dic

See how we create our own scopes using the convention:

def scope_<SCOPE_NAME>(self, user):

If a field is empty or None will be cleaned from the response.

OIDC_IDTOKEN_EXPIRE

OPTIONAL.

int. Expressed in seconds. Default is 60*10.

OIDC_IDTOKEN_SUB_GENERATOR

OPTIONAL. A string with the location of your function. sub is a locally unique and never reassigned identifier within the Issuer for the End-User, which is intended to be consumed by the Client.

The function receives a user object and returns a unique string for the given user.

Default is:

def default_sub_generator(user):

    return str(user.id)

OIDC_RSA_KEY_FOLDER

REQUIRED. Path of the folder where OIDC_RSA_KEY.pem lives. Used to sign/encrypt id_token. The package will automatically generate a public key and expose it in the jwks_uri endpoint.

You can easily create it using python manage.py creatersakey command.

OIDC_SKIP_CONSENT_ENABLE

OPTIONAL. If enabled, the Server will save the user consent given to a specific client, so that user won't be prompted for the same authorization multiple times.

bool. Default is True.

OIDC_SKIP_CONSENT_EXPIRE

OPTIONAL. User consent expiration after been granted.

int. Expressed in days. Default is 30*3.

OIDC_TOKEN_EXPIRE

OPTIONAL. Token object expiration after been created.

int. Expressed in seconds. Default is 60*60.

OIDC_USERINFO

OPTIONAL. A string with the location of your class. Read standard claims section.

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