p1-auth 0.1.4

Installable Django Authentication that adds support for Platform One

p1-auth

Provides an authentication system for Platform One by decoding non-encrypted JWTs.

[!CAUTION] Signatures are not verified.

Additionally provides configurations to automatically populate user attributes and assign user membership from JWT fields.

Installation

After running pip install p1-auth add the following to the settings.py file as needed.

INSTALLED_APPS = [
    ...
    'p1_auth',
    ...
]

Adding p1_auth to the INSTALLED_APPS is required for use.

MIDDLEWARE = [
    ...
    'django.contrib.sessions.middleware.SessionMiddleware',
    ...
    'p1_auth.middleware.AuthenticateSessionMiddleware',
    ...
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    ...
]

The p1-auth middleware can be used to force creation of sessions for use with django admin. If it is used, it should be between django SessionMiddleware and AuthenticationMiddleware as shown above.

AUTHENTICATION_BACKENDS = (
    ...
    'p1_auth.backends.PlatformOneAuthentication',
    ...
)

PlatformOneAuthentication authenticates django requests.

REST_FRAMEWORK = {
    ...
    'DEFAULT_AUTHENTICATION_CLASSES': [
        ...
        'p1_auth.backends.PlatformOneRestAuthentication',
        ...
    ],
    ...
}

PlatformOneRestAuthentication authenticates django-rest-framework requests.

settings.py

This section covers configurations that can be set in the settings.py file.

USER_ATTRIBUTES_MAP

A python dictionary to map between fields on the User model and the JWT fields.

USER_ATTRIBUTES_MAP = {
    "PYTHON_USER_MODEL_FIELD_NAME": "JWT_FIELD_NAME",
    "first_name": "given_name",
}

USER_MEMBERSHIPS

A python dictionary to map between models based on JWT fields. The JWT side can be an id, string, or list.

NOTE: the connection between the models must allow connections like the following user.connection_name.update_or_create(**{"field_name": "jwt_memberships"})

USER_MEMBERSHIPS = {
    "PYTHON_USER_MODEL_CONNECTION_NAME": {
        "CONNECTED_MODEL_FIELD": "JWT_MEMBERSHIP_FIELD"
    },
    "groups": {
        "name": "simple_groups"
    },
}

USER_STAFF_FLAG

A key for the JWT to be checked to determine if the user should be marked as staff. This uses the is_staff flag Django's AbstractUser model.

NOTE: if USER_STAFF_VALUE is not set, staff status will be determined by USER_STAFF_FLAG existing in the JWT, and having a non-empty value. So an empty list or string will not confer staff status.

USER_STAFF_FLAG = "JWT_STAFF_FLAG"

USER_STAFF_VALUE

A value to check for in the JWT under the USER_STAFF_FLAG. If the JWT contains a list under USER_STAFF_FLAG, it will check to see if the value of USER_STAFF_VALUE is within the list. The value of USER_STAFF_VALUE is not type restricted, but the comparison is type dependent, so '1' == 1 would fail.

USER_STAFF_VALUE = 123

USER_SUPERUSER_FLAG

A key for the JWT to be checked to determine if the user should be marked as superuser. This uses the is_superuser flag Django's AbstractUser model.

NOTE: if USER_SUPERUSER_VALUE is not set, superuser status will be determined by USER_SUPERUSER_FLAG existing in the JWT, and having a non-empty value. So an empty list or string will not confer staff status.

USER_SUPERUSER_FLAG = "JWT_SUPERUSER_FLAG"

USER_SUPERUSER_VALUE

A value to check for in the JWT under the USER_SUPERUSER_FLAG. If the JWT contains a list under USER_SUPERUSER_FLAG, it will check to see if the value of USER_SUPERUSER_VALUE is within the list. The value of USER_SUPERUSER_VALUE is not type restricted, but the comparison is type dependent, so '1' == 1 would fail.

USER_SUPERUSER_VALUE = 123

REQUIRE_JWT

A flag to require JWTs on every request.

REQUIRE_JWT = True

JWT_PREFERRED_USERNAME_FIELD

The field to use to populate the Username Field of the Django User model. This defaults to preferred_username.

JWT_PREFERRED_USERNAME_FIELD = "email"

Django Admin

This section covers configurations that can be set in the Django Admin.

RelatedAssignment

RelatedAssignment allows selecting a Model (object_model) and instance (object_pk) that a user should be assigned to if all related AttributeChecks pass.

Object_model is a dropdown of the enabled content types within the application, where you select the object type you want to assign users to.

Object_pk is the Primary Key of the object you want to assign users to.

AttributeCheck

AttributeCheck allows specifying the JWT key (jwt_attribute) and an expected value.

Jwt_attribute should be a valid JSON key, or a JSON object for traversing the JWT to where the key will be.

Expected_value is the expected JSON value.