django-graphql-jwt 0.1.0

Django GraphQL JWT
==================

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JSON Web Token Authentication for `Django GraphQL`_

.. _Django GraphQL: https://github.com/graphql-python/graphene-django


Dependencies
------------

* Python ≥ 3.4
* Django ≥ 1.11


Installation
------------

Install last stable version from Pypi.

.. code:: sh

pip install django-graphql-jwt


Include the JWT middleware in your `MIDDLEWARE` settings:

.. code:: python

MIDDLEWARE = [
...
'django.contrib.auth.middleware.AuthenticationMiddleware',
'graphql_jwt.middleware.JWTMiddleware',
...
]

Include the JWT backend in your `AUTHENTICATION_BACKENDS` settings:

.. code:: python

AUTHENTICATION_BACKENDS = [
'graphql_jwt.backends.JWTBackend',
'django.contrib.auth.backends.ModelBackend',
]


User Node
---------

Let's start by creating a simple `UserNode`.

.. code:: python

from django.contrib.auth import get_user_model

import graphene
from graphene_django import DjangoObjectType
from graphql_jwt.utils import jwt_encode, jwt_payload


class UserNode(DjangoObjectType):
token = graphene.String()

class Meta:
model = get_user_model()

def resolve_token(self, info, **kwargs):
if info.context.user != self:
return None

payload = jwt_payload(self)
return jwt_encode(payload)


Login mutation
--------------

Create the `LogIn` mutation on your schema to authenticate the user.

.. code:: python

from django.contrib.auth import authenticate, login

import graphene


class LogIn(graphene.Mutation):
user = graphene.Field(UserNode)

class Arguments:
username = graphene.String()
password = graphene.String()

@classmethod
def mutate(cls, root, info, username, password):
user = authenticate(username=username, password=password)

if user is None:
raise Exception('Please enter a correct username and password')

if not user.is_active:
raise Exception('It seems your account has been disabled')

login(info.context, user)
return cls(user=user)


Verify and refresh token
------------------------

Add mutations to your GraphQL schema.

.. code:: python

import graphene
import graphql_jwt


class Mutations(graphene.ObjectType):
verify_token = graphql_jwt.Verify.Field()
refresh_token = graphql_jwt.Refresh.Field()


schema = graphene.Schema(mutations=Mutations)


``verifyToken`` to confirm that the JWT is valid.

.. code:: graphql

mutation {
verifyToken(token: "...") {
payload
}
}


``refreshToken`` to obtain a brand new token with renewed expiration time for non-expired tokens.

.. code:: graphql

mutation {
refreshToken(token: "...") {
data
}
}


Environment variables
---------------------

`JWT_ALGORITHM`_
::
Algorithm for cryptographic signing
Default: HS256


`JWT_AUDIENCE`_
::
Identifies the recipients that the JWT is intended for
Default: None


JWT_AUTH_HEADER_PREFIX
::
Authorization prefix
Default: JWT

`JWT_ISSUER`_
::
Identifies the principal that issued the JWT
Default: None

`JWT_LEEWAY`_
::
Validate an expiration time which is in the past but not very far
Default: seconds=0

JWT_SECRET_KEY
::
The secret key used to sign the JWT
Default: settings.SECRET_KEY

`JWT_VERIFY`_
::
Secret key verification
Default: True

`JWT_VERIFY_EXPIRATION`_
::
Expiration time verification
Default: False

JWT_EXPIRATION_DELTA
::
Timedelta added to utcnow() to set the expiration time
Default: minutes=5

JWT_ALLOW_REFRESH
::
Enable token refresh
Default: True

JWT_REFRESH_EXPIRATION_DELTA
::
Limit on token refresh
Default: days=7


.. _JWT_ALGORITHM: https://pyjwt.readthedocs.io/en/latest/algorithms.html
.. _JWT_AUDIENCE: http://pyjwt.readthedocs.io/en/latest/usage.html#audience-claim-aud
.. _JWT_ISSUER: http://pyjwt.readthedocs.io/en/latest/usage.html#issuer-claim-iss
.. _JWT_LEEWAY: http://pyjwt.readthedocs.io/en/latest/usage.html?highlight=leeway#expiration-time-claim-exp
.. _JWT_VERIFY: http://pyjwt.readthedocs.io/en/latest/usage.html?highlight=verify#reading-the-claimset-without-validation
.. _JWT_VERIFY_EXPIRATION: http://pyjwt.readthedocs.io/en/latest/usage.html?highlight=verify_exp#expiration-time-claim-exp


.. |Pypi| image:: https://img.shields.io/pypi/v/django-graphql-jwt.svg
:target: https://pypi.python.org/pypi/django-graphql-jwt

.. |Wheel| image:: https://img.shields.io/pypi/wheel/django-graphql-jwt.svg
:target: https://pypi.python.org/pypi/django-graphql-jwt

.. |Build Status| image:: https://travis-ci.org/flavors/graphql-jwt.svg?branch=master
:target: https://travis-ci.org/flavors/graphql-jwt

.. |Codecov| image:: https://img.shields.io/codecov/c/github/flavors/graphql-jwt.svg
:target: https://codecov.io/gh/flavors/graphql-jwt

.. |Code Climate| image:: https://api.codeclimate.com/v1/badges/7ca6c7ced3df021b7915/maintainability
:target: https://codeclimate.com/github/flavors/graphql-jwt