first commit

venv/lib/python3.11/site-packages/oauth2_provider/__init__.py

@@ -0,0 +1 @@
+__version__ = "3.0.1"

venv/lib/python3.11/site-packages/oauth2_provider/admin.py

@@ -0,0 +1,77 @@
+from django.contrib import admin
+from django.contrib.auth import get_user_model
+
+from oauth2_provider.models import (
+    get_access_token_admin_class,
+    get_access_token_model,
+    get_application_admin_class,
+    get_application_model,
+    get_grant_admin_class,
+    get_grant_model,
+    get_id_token_admin_class,
+    get_id_token_model,
+    get_refresh_token_admin_class,
+    get_refresh_token_model,
+)
+
+
+has_email = hasattr(get_user_model(), "email")
+
+
+class ApplicationAdmin(admin.ModelAdmin):
+    list_display = ("pk", "name", "user", "client_type", "authorization_grant_type")
+    list_filter = ("client_type", "authorization_grant_type", "skip_authorization")
+    radio_fields = {
+        "client_type": admin.HORIZONTAL,
+        "authorization_grant_type": admin.VERTICAL,
+    }
+    search_fields = ("name",) + (("user__email",) if has_email else ())
+    raw_id_fields = ("user",)
+
+
+class AccessTokenAdmin(admin.ModelAdmin):
+    list_display = ("token", "user", "application", "expires")
+    list_select_related = ("application", "user")
+    raw_id_fields = ("user", "source_refresh_token")
+    search_fields = ("token",) + (("user__email",) if has_email else ())
+    list_filter = ("application",)
+
+
+class GrantAdmin(admin.ModelAdmin):
+    list_display = ("code", "application", "user", "expires")
+    raw_id_fields = ("user",)
+    search_fields = ("code",) + (("user__email",) if has_email else ())
+
+
+class IDTokenAdmin(admin.ModelAdmin):
+    list_display = ("jti", "user", "application", "expires")
+    raw_id_fields = ("user",)
+    search_fields = ("user__email",) if has_email else ()
+    list_filter = ("application",)
+    list_select_related = ("application", "user")
+
+
+class RefreshTokenAdmin(admin.ModelAdmin):
+    list_display = ("token", "user", "application")
+    raw_id_fields = ("user", "access_token")
+    search_fields = ("token",) + (("user__email",) if has_email else ())
+    list_filter = ("application",)
+
+
+application_model = get_application_model()
+access_token_model = get_access_token_model()
+grant_model = get_grant_model()
+id_token_model = get_id_token_model()
+refresh_token_model = get_refresh_token_model()
+
+application_admin_class = get_application_admin_class()
+access_token_admin_class = get_access_token_admin_class()
+grant_admin_class = get_grant_admin_class()
+id_token_admin_class = get_id_token_admin_class()
+refresh_token_admin_class = get_refresh_token_admin_class()
+
+admin.site.register(application_model, application_admin_class)
+admin.site.register(access_token_model, access_token_admin_class)
+admin.site.register(grant_model, grant_admin_class)
+admin.site.register(id_token_model, id_token_admin_class)
+admin.site.register(refresh_token_model, refresh_token_admin_class)

venv/lib/python3.11/site-packages/oauth2_provider/apps.py

@@ -0,0 +1,10 @@
+from django.apps import AppConfig
+
+
+class DOTConfig(AppConfig):
+    name = "oauth2_provider"
+    verbose_name = "Django OAuth Toolkit"
+
+    def ready(self):
+        # Import checks to ensure they run.
+        from . import checks  # noqa: F401

venv/lib/python3.11/site-packages/oauth2_provider/backends.py

@@ -0,0 +1,35 @@
+from django.contrib.auth import get_user_model
+from django.core.exceptions import SuspiciousOperation
+
+from .oauth2_backends import get_oauthlib_core
+
+
+UserModel = get_user_model()
+OAuthLibCore = get_oauthlib_core()
+
+
+class OAuth2Backend:
+    """
+    Authenticate against an OAuth2 access token
+    """
+
+    def authenticate(self, request=None, **credentials):
+        if request is not None:
+            try:
+                valid, request = OAuthLibCore.verify_request(request, scopes=[])
+            except ValueError as error:
+                if str(error) == "Invalid hex encoding in query string.":
+                    raise SuspiciousOperation(error)
+                else:
+                    raise
+            else:
+                if valid:
+                    return request.user
+
+        return None
+
+    def get_user(self, user_id):
+        try:
+            return UserModel.objects.get(pk=user_id)
+        except UserModel.DoesNotExist:
+            return None

venv/lib/python3.11/site-packages/oauth2_provider/checks.py

@@ -0,0 +1,28 @@
+from django.apps import apps
+from django.core import checks
+from django.db import router
+
+from .settings import oauth2_settings
+
+
+@checks.register(checks.Tags.database)
+def validate_token_configuration(app_configs, **kwargs):
+    databases = set(
+        router.db_for_write(apps.get_model(model))
+        for model in (
+            oauth2_settings.ACCESS_TOKEN_MODEL,
+            oauth2_settings.ID_TOKEN_MODEL,
+            oauth2_settings.REFRESH_TOKEN_MODEL,
+        )
+    )
+
+    # This is highly unlikely, but let's warn people just in case it does.
+    # If the tokens were allowed to be in different databases this would require all
+    # writes to have a transaction around each database. Instead, let's enforce that
+    # they all live together in one database.
+    # The tokens are not required to live in the default database provided the Django
+    # routers know the correct database for them.
+    if len(databases) > 1:
+        return [checks.Error("The token models are expected to be stored in the same database.")]
+
+    return []

venv/lib/python3.11/site-packages/oauth2_provider/compat.py

@@ -0,0 +1,15 @@
+"""
+The `compat` module provides support for backwards compatibility with older
+versions of Django and Python.
+"""
+
+try:
+    # Django 5.1 introduced LoginRequiredMiddleware, and login_not_required decorator
+    from django.contrib.auth.decorators import login_not_required
+except ImportError:
+
+    def login_not_required(view_func):
+        return view_func
+
+
+__all__ = ["login_not_required"]

venv/lib/python3.11/site-packages/oauth2_provider/contrib/rest_framework/__init__.py

@@ -0,0 +1,9 @@
+# flake8: noqa
+from .authentication import OAuth2Authentication
+from .permissions import (
+    IsAuthenticatedOrTokenHasScope,
+    TokenHasReadWriteScope,
+    TokenHasResourceScope,
+    TokenHasScope,
+    TokenMatchesOASRequirements,
+)

venv/lib/python3.11/site-packages/oauth2_provider/contrib/rest_framework/authentication.py

@@ -0,0 +1,55 @@
+from collections import OrderedDict
+
+from django.core.exceptions import SuspiciousOperation
+from rest_framework.authentication import BaseAuthentication
+
+from ...oauth2_backends import get_oauthlib_core
+
+
+class OAuth2Authentication(BaseAuthentication):
+    """
+    OAuth 2 authentication backend using `django-oauth-toolkit`
+    """
+
+    www_authenticate_realm = "api"
+
+    def _dict_to_string(self, my_dict):
+        """
+        Return a string of comma-separated key-value pairs (e.g. k="v",k2="v2").
+        """
+        return ",".join(['{k}="{v}"'.format(k=k, v=v) for k, v in my_dict.items()])
+
+    def authenticate(self, request):
+        """
+        Returns two-tuple of (user, token) if authentication succeeds,
+        or None otherwise.
+        """
+        if request is None:
+            return None
+        oauthlib_core = get_oauthlib_core()
+        try:
+            valid, r = oauthlib_core.verify_request(request, scopes=[])
+        except ValueError as error:
+            if str(error) == "Invalid hex encoding in query string.":
+                raise SuspiciousOperation(error)
+            raise
+        else:
+            if valid:
+                return r.user, r.access_token
+        request.oauth2_error = getattr(r, "oauth2_error", {})
+        return None
+
+    def authenticate_header(self, request):
+        """
+        Bearer is the only finalized type currently
+        """
+        www_authenticate_attributes = OrderedDict(
+            [
+                ("realm", self.www_authenticate_realm),
+            ]
+        )
+        oauth2_error = getattr(request, "oauth2_error", {})
+        www_authenticate_attributes.update(oauth2_error)
+        return "Bearer {attributes}".format(
+            attributes=self._dict_to_string(www_authenticate_attributes),
+        )

venv/lib/python3.11/site-packages/oauth2_provider/contrib/rest_framework/permissions.py

@@ -0,0 +1,183 @@
+import logging
+
+from django.core.exceptions import ImproperlyConfigured
+from rest_framework.exceptions import PermissionDenied
+from rest_framework.permissions import SAFE_METHODS, BasePermission, IsAuthenticated
+
+from ...settings import oauth2_settings
+from .authentication import OAuth2Authentication
+
+
+log = logging.getLogger("oauth2_provider")
+
+
+class TokenHasScope(BasePermission):
+    """
+    The request is authenticated as a user and the token used has the right scope
+    """
+
+    def has_permission(self, request, view):
+        token = request.auth
+
+        if not token:
+            return False
+
+        if hasattr(token, "scope"):  # OAuth 2
+            required_scopes = self.get_scopes(request, view)
+            log.debug("Required scopes to access resource: {0}".format(required_scopes))
+
+            if token.is_valid(required_scopes):
+                return True
+
+            # Provide information about required scope?
+            include_required_scope = (
+                oauth2_settings.ERROR_RESPONSE_WITH_SCOPES
+                and required_scopes
+                and not token.is_expired()
+                and not token.allow_scopes(required_scopes)
+            )
+
+            if include_required_scope:
+                self.message = {
+                    "detail": PermissionDenied.default_detail,
+                    "required_scopes": list(required_scopes),
+                }
+
+            return False
+
+        assert False, (
+            "TokenHasScope requires the"
+            "`oauth2_provider.rest_framework.OAuth2Authentication` authentication "
+            "class to be used."
+        )
+
+    def get_scopes(self, request, view):
+        try:
+            return getattr(view, "required_scopes")
+        except AttributeError:
+            raise ImproperlyConfigured(
+                "TokenHasScope requires the view to define the required_scopes attribute"
+            )
+
+
+class TokenHasReadWriteScope(TokenHasScope):
+    """
+    The request is authenticated as a user and the token used has the right scope
+    """
+
+    def get_scopes(self, request, view):
+        try:
+            required_scopes = super().get_scopes(request, view)
+        except ImproperlyConfigured:
+            required_scopes = []
+
+        # TODO: code duplication!! see dispatch in ReadWriteScopedResourceMixin
+        if request.method.upper() in SAFE_METHODS:
+            read_write_scope = oauth2_settings.READ_SCOPE
+        else:
+            read_write_scope = oauth2_settings.WRITE_SCOPE
+
+        return required_scopes + [read_write_scope]
+
+
+class TokenHasResourceScope(TokenHasScope):
+    """
+    The request is authenticated as a user and the token used has the right scope
+    """
+
+    def get_scopes(self, request, view):
+        try:
+            view_scopes = super().get_scopes(request, view)
+        except ImproperlyConfigured:
+            view_scopes = []
+
+        if request.method.upper() in SAFE_METHODS:
+            scope_type = oauth2_settings.READ_SCOPE
+        else:
+            scope_type = oauth2_settings.WRITE_SCOPE
+
+        required_scopes = ["{}:{}".format(scope, scope_type) for scope in view_scopes]
+
+        return required_scopes
+
+
+class IsAuthenticatedOrTokenHasScope(BasePermission):
+    """
+    The user is authenticated using some backend or the token has the right scope
+    This only returns True if the user is authenticated, but not using a token
+    or using a token, and the token has the correct scope.
+
+    This is useful when combined with the DjangoModelPermissions to allow people browse
+    the browsable api's if they log in using the a non token bassed middleware,
+    and let them access the api's using a rest client with a token
+    """
+
+    def has_permission(self, request, view):
+        is_authenticated = IsAuthenticated().has_permission(request, view)
+        oauth2authenticated = False
+        if is_authenticated:
+            oauth2authenticated = isinstance(request.successful_authenticator, OAuth2Authentication)
+
+        token_has_scope = TokenHasScope()
+        return (is_authenticated and not oauth2authenticated) or token_has_scope.has_permission(request, view)
+
+
+class TokenMatchesOASRequirements(BasePermission):
+    """
+    :attr:alternate_required_scopes: dict keyed by HTTP method name with value: iterable alternate scope lists
+
+    This fulfills the [Open API Specification (OAS; formerly Swagger)](https://www.openapis.org/)
+    list of alternative Security Requirements Objects for oauth2 or openIdConnect:
+      When a list of Security Requirement Objects is defined on the Open API object or Operation Object,
+      only one of Security Requirement Objects in the list needs to be satisfied to authorize the request.
+    [1](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#securityRequirementObject)
+
+    For each method, a list of lists of allowed scopes is tried in order and the first to match succeeds.
+
+    @example
+    required_alternate_scopes = {
+       'GET': [['read']],
+       'POST': [['create1','scope2'], ['alt-scope3'], ['alt-scope4','alt-scope5']],
+    }
+
+    TODO: DRY: subclass TokenHasScope and iterate over values of required_scope?
+    """
+
+    def has_permission(self, request, view):
+        token = request.auth
+
+        if not token:
+            return False
+
+        if hasattr(token, "scope"):  # OAuth 2
+            required_alternate_scopes = self.get_required_alternate_scopes(request, view)
+
+            m = request.method.upper()
+            if m in required_alternate_scopes:
+                log.debug(
+                    "Required scopes alternatives to access resource: {0}".format(
+                        required_alternate_scopes[m]
+                    )
+                )
+                for alt in required_alternate_scopes[m]:
+                    if token.is_valid(alt):
+                        return True
+                return False
+            else:
+                log.warning("no scope alternates defined for method {0}".format(m))
+                return False
+
+        assert False, (
+            "TokenMatchesOASRequirements requires the"
+            "`oauth2_provider.rest_framework.OAuth2Authentication` authentication "
+            "class to be used."
+        )
+
+    def get_required_alternate_scopes(self, request, view):
+        try:
+            return getattr(view, "required_alternate_scopes")
+        except AttributeError:
+            raise ImproperlyConfigured(
+                "TokenMatchesOASRequirements requires the view to"
+                " define the required_alternate_scopes attribute"
+            )

venv/lib/python3.11/site-packages/oauth2_provider/decorators.py

@@ -0,0 +1,87 @@
+from functools import wraps
+
+from django.core.exceptions import ImproperlyConfigured
+from django.http import HttpResponseForbidden
+from oauthlib.oauth2 import Server
+
+from .oauth2_backends import OAuthLibCore
+from .oauth2_validators import OAuth2Validator
+from .scopes import get_scopes_backend
+from .settings import oauth2_settings
+
+
+def protected_resource(scopes=None, validator_cls=OAuth2Validator, server_cls=Server):
+    """
+    Decorator to protect views by providing OAuth2 authentication out of the box,
+    optionally with scope handling.
+
+        @protected_resource()
+        def my_view(request):
+            # An access token is required to get here...
+            # ...
+            pass
+    """
+    _scopes = scopes or []
+
+    def decorator(view_func):
+        @wraps(view_func)
+        def _validate(request, *args, **kwargs):
+            validator = validator_cls()
+            core = OAuthLibCore(server_cls(validator))
+            valid, oauthlib_req = core.verify_request(request, scopes=_scopes)
+            if valid:
+                request.resource_owner = oauthlib_req.user
+                return view_func(request, *args, **kwargs)
+            return HttpResponseForbidden()
+
+        return _validate
+
+    return decorator
+
+
+def rw_protected_resource(scopes=None, validator_cls=OAuth2Validator, server_cls=Server):
+    """
+    Decorator to protect views by providing OAuth2 authentication and read/write scopes
+    out of the box.
+    GET, HEAD, OPTIONS http methods require "read" scope. Otherwise "write" scope is required.
+
+        @rw_protected_resource()
+        def my_view(request):
+            # If this is a POST, you have to provide 'write' scope to get here...
+            # ...
+            pass
+
+    """
+    _scopes = scopes or []
+
+    def decorator(view_func):
+        @wraps(view_func)
+        def _validate(request, *args, **kwargs):
+            # Check if provided scopes are acceptable
+            provided_scopes = get_scopes_backend().get_all_scopes()
+            read_write_scopes = [oauth2_settings.READ_SCOPE, oauth2_settings.WRITE_SCOPE]
+
+            if not set(read_write_scopes).issubset(set(provided_scopes)):
+                raise ImproperlyConfigured(
+                    "rw_protected_resource decorator requires following scopes {0}"
+                    " to be in OAUTH2_PROVIDER['SCOPES'] list in settings".format(read_write_scopes)
+                )
+
+            # Check if method is safe
+            if request.method.upper() in ["GET", "HEAD", "OPTIONS"]:
+                _scopes.append(oauth2_settings.READ_SCOPE)
+            else:
+                _scopes.append(oauth2_settings.WRITE_SCOPE)
+
+            # proceed with validation
+            validator = validator_cls()
+            core = OAuthLibCore(server_cls(validator))
+            valid, oauthlib_req = core.verify_request(request, scopes=_scopes)
+            if valid:
+                request.resource_owner = oauthlib_req.user
+                return view_func(request, *args, **kwargs)
+            return HttpResponseForbidden()
+
+        return _validate
+
+    return decorator

venv/lib/python3.11/site-packages/oauth2_provider/exceptions.py

@@ -0,0 +1,65 @@
+class OAuthToolkitError(Exception):
+    """
+    Base class for exceptions
+    """
+
+    def __init__(self, error=None, redirect_uri=None, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.oauthlib_error = error
+
+        if redirect_uri:
+            self.oauthlib_error.redirect_uri = redirect_uri
+
+
+class FatalClientError(OAuthToolkitError):
+    """
+    Class for critical errors
+    """
+
+    pass
+
+
+class OIDCError(Exception):
+    """
+    General class to derive from for all OIDC related errors.
+    """
+
+    status_code = 400
+    error = None
+
+    def __init__(self, description=None):
+        if description is not None:
+            self.description = description
+
+        message = "({}) {}".format(self.error, self.description)
+        super().__init__(message)
+
+
+class InvalidRequestFatalError(OIDCError):
+    """
+    For fatal errors. These are requests with invalid parameter values, missing parameters or otherwise
+    incorrect requests.
+    """
+
+    error = "invalid_request"
+
+
+class ClientIdMissmatch(InvalidRequestFatalError):
+    description = "Mismatch between the Client ID of the ID Token and the Client ID that was provided."
+
+
+class InvalidOIDCClientError(InvalidRequestFatalError):
+    description = "The client is unknown or no client has been included."
+
+
+class InvalidOIDCRedirectURIError(InvalidRequestFatalError):
+    description = "Invalid post logout redirect URI."
+
+
+class InvalidIDTokenError(InvalidRequestFatalError):
+    description = "The ID Token is expired, revoked, malformed, or otherwise invalid."
+
+
+class LogoutDenied(OIDCError):
+    error = "logout_denied"
+    description = "Logout has been refused by the user."

venv/lib/python3.11/site-packages/oauth2_provider/forms.py

@@ -0,0 +1,28 @@
+from django import forms
+
+
+class AllowForm(forms.Form):
+    allow = forms.BooleanField(required=False)
+    redirect_uri = forms.CharField(widget=forms.HiddenInput())
+    scope = forms.CharField(widget=forms.HiddenInput())
+    nonce = forms.CharField(required=False, widget=forms.HiddenInput())
+    client_id = forms.CharField(widget=forms.HiddenInput())
+    state = forms.CharField(required=False, widget=forms.HiddenInput())
+    response_type = forms.CharField(widget=forms.HiddenInput())
+    code_challenge = forms.CharField(required=False, widget=forms.HiddenInput())
+    code_challenge_method = forms.CharField(required=False, widget=forms.HiddenInput())
+    claims = forms.CharField(required=False, widget=forms.HiddenInput())
+
+
+class ConfirmLogoutForm(forms.Form):
+    allow = forms.BooleanField(required=False)
+    id_token_hint = forms.CharField(required=False, widget=forms.HiddenInput())
+    logout_hint = forms.CharField(required=False, widget=forms.HiddenInput())
+    client_id = forms.CharField(required=False, widget=forms.HiddenInput())
+    post_logout_redirect_uri = forms.CharField(required=False, widget=forms.HiddenInput())
+    state = forms.CharField(required=False, widget=forms.HiddenInput())
+    ui_locales = forms.CharField(required=False, widget=forms.HiddenInput())
+
+    def __init__(self, *args, **kwargs):
+        self.request = kwargs.pop("request", None)
+        super(ConfirmLogoutForm, self).__init__(*args, **kwargs)

venv/lib/python3.11/site-packages/oauth2_provider/generators.py

@@ -0,0 +1,45 @@
+from oauthlib.common import UNICODE_ASCII_CHARACTER_SET
+from oauthlib.common import generate_client_id as oauthlib_generate_client_id
+
+from .settings import oauth2_settings
+
+
+class BaseHashGenerator:
+    """
+    All generators should extend this class overriding `.hash()` method.
+    """
+
+    def hash(self):
+        raise NotImplementedError()
+
+
+class ClientIdGenerator(BaseHashGenerator):
+    def hash(self):
+        """
+        Generate a client_id for Basic Authentication scheme without colon char
+        as in https://rfc-editor.org/rfc/rfc2617.html#section-2
+        """
+        return oauthlib_generate_client_id(length=40, chars=UNICODE_ASCII_CHARACTER_SET)
+
+
+class ClientSecretGenerator(BaseHashGenerator):
+    def hash(self):
+        length = oauth2_settings.CLIENT_SECRET_GENERATOR_LENGTH
+        chars = UNICODE_ASCII_CHARACTER_SET
+        return oauthlib_generate_client_id(length=length, chars=chars)
+
+
+def generate_client_id():
+    """
+    Generate a suitable client id
+    """
+    client_id_generator = oauth2_settings.CLIENT_ID_GENERATOR_CLASS()
+    return client_id_generator.hash()
+
+
+def generate_client_secret():
+    """
+    Generate a suitable client secret
+    """
+    client_secret_generator = oauth2_settings.CLIENT_SECRET_GENERATOR_CLASS()
+    return client_secret_generator.hash()

venv/lib/python3.11/site-packages/oauth2_provider/http.py

@@ -0,0 +1,32 @@
+from urllib.parse import urlparse
+
+from django.core.exceptions import DisallowedRedirect
+from django.http import HttpResponse
+from django.utils.encoding import iri_to_uri
+
+
+class OAuth2ResponseRedirect(HttpResponse):
+    """
+    An HTTP 302 redirect with an explicit list of allowed schemes.
+    Works like django.http.HttpResponseRedirect but we customize it
+    to give us more flexibility on allowed scheme validation.
+    """
+
+    status_code = 302
+
+    def __init__(self, redirect_to, allowed_schemes, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self["Location"] = iri_to_uri(redirect_to)
+        self.allowed_schemes = allowed_schemes
+        self.validate_redirect(redirect_to)
+
+    @property
+    def url(self):
+        return self["Location"]
+
+    def validate_redirect(self, redirect_to):
+        parsed = urlparse(str(redirect_to))
+        if not parsed.scheme:
+            raise DisallowedRedirect("OAuth2 redirects require a URI scheme.")
+        if parsed.scheme not in self.allowed_schemes:
+            raise DisallowedRedirect("Redirect to scheme {!r} is not permitted".format(parsed.scheme))

venv/lib/python3.11/site-packages/oauth2_provider/management/commands/cleartokens.py

@@ -0,0 +1,10 @@
+from django.core.management.base import BaseCommand
+
+from ...models import clear_expired
+
+
+class Command(BaseCommand):  # pragma: no cover
+    help = "Can be run as a cronjob or directly to clean out expired tokens"
+
+    def handle(self, *args, **options):
+        clear_expired()

venv/lib/python3.11/site-packages/oauth2_provider/management/commands/createapplication.py

@@ -0,0 +1,109 @@
+from django.core.exceptions import ValidationError
+from django.core.management.base import BaseCommand
+
+from oauth2_provider.models import get_application_model
+
+
+Application = get_application_model()
+
+
+class Command(BaseCommand):
+    help = "Shortcut to create a new application in a programmatic way"
+
+    def add_arguments(self, parser):
+        parser.add_argument(
+            "client_type",
+            type=str,
+            help="The client type, one of: %s" % ", ".join([ctype[0] for ctype in Application.CLIENT_TYPES]),
+        )
+        parser.add_argument(
+            "authorization_grant_type",
+            type=str,
+            help="The type of authorization grant to be used, one of: %s"
+            % ", ".join([gtype[0] for gtype in Application.GRANT_TYPES]),
+        )
+        parser.add_argument(
+            "--client-id",
+            type=str,
+            help="The ID of the new application",
+        )
+        parser.add_argument(
+            "--user",
+            type=str,
+            help="The user the application belongs to",
+        )
+        parser.add_argument(
+            "--redirect-uris",
+            type=str,
+            help="The redirect URIs, this must be a space separated string e.g 'URI1 URI2'",
+        )
+        parser.add_argument(
+            "--post-logout-redirect-uris",
+            type=str,
+            help="The post logout redirect URIs, this must be a space separated string e.g 'URI1 URI2'",
+            default="",
+        )
+        parser.add_argument(
+            "--client-secret",
+            type=str,
+            help="The secret for this application",
+        )
+        parser.add_argument(
+            "--no-hash-client-secret",
+            dest="hash_client_secret",
+            action="store_false",
+            help="Don't hash the client secret",
+        )
+        parser.set_defaults(hash_client_secret=True)
+        parser.add_argument(
+            "--name",
+            type=str,
+            help="The name this application",
+        )
+        parser.add_argument(
+            "--skip-authorization",
+            action="store_true",
+            help="If set, completely bypass the authorization form, even on the first use of the application",
+        )
+        parser.add_argument(
+            "--algorithm",
+            type=str,
+            help="The OIDC token signing algorithm for this application, one of: %s"
+            % ", ".join([atype[0] for atype in Application.ALGORITHM_TYPES if atype[0]]),
+        )
+
+    def handle(self, *args, **options):
+        # Extract all fields related to the application, this will work now and in the future
+        # and also with custom application models.
+        application_fields = [field.name for field in Application._meta.fields]
+        application_data = {}
+        for key, value in options.items():
+            # Data in options must be cleaned because there are unneeded key-value like
+            # verbosity and others. Also do not pass any None to the Application
+            # instance so default values will be generated for those fields
+            if key in application_fields and (isinstance(value, bool) or value):
+                if key == "user":
+                    application_data.update({"user_id": value})
+                else:
+                    application_data.update({key: value})
+
+        new_application = Application(**application_data)
+
+        try:
+            new_application.full_clean()
+        except ValidationError as exc:
+            errors = "\n ".join(
+                ["- " + err_key + ": " + str(err_value) for err_key, err_value in exc.message_dict.items()]
+            )
+            self.stdout.write(self.style.ERROR("Please correct the following errors:\n %s" % errors))
+        else:
+            cleartext_secret = new_application.client_secret
+            new_application.save()
+            # Display the newly-created client_name or id.
+            client_name_or_id = application_data.get("name", new_application.client_id)
+            self.stdout.write(
+                self.style.SUCCESS("New application %s created successfully." % client_name_or_id)
+            )
+            # Print out the cleartext client_secret if it was autogenerated.
+            if "client_secret" not in application_data:
+                self.stdout.write(self.style.SUCCESS("client_secret: %s" % cleartext_secret))

venv/lib/python3.11/site-packages/oauth2_provider/middleware.py

@@ -0,0 +1,65 @@
+import hashlib
+import logging
+
+from django.contrib.auth import authenticate
+from django.utils.cache import patch_vary_headers
+
+from oauth2_provider.models import get_access_token_model
+
+
+log = logging.getLogger(__name__)
+
+
+class OAuth2TokenMiddleware:
+    """
+    Middleware for OAuth2 user authentication
+
+    This middleware is able to work along with AuthenticationMiddleware and its behaviour depends
+    on the order it's processed with.
+
+    If it comes *after* AuthenticationMiddleware and request.user is valid, leave it as is and does
+    not proceed with token validation. If request.user is the Anonymous user proceeds and try to
+    authenticate the user using the OAuth2 access token.
+
+    If it comes *before* AuthenticationMiddleware, or AuthenticationMiddleware is not used at all,
+    tries to authenticate user with the OAuth2 access token and set request.user field. Setting
+    also request._cached_user field makes AuthenticationMiddleware use that instead of the one from
+    the session.
+
+    It also adds "Authorization" to the "Vary" header, so that django's cache middleware or a
+    reverse proxy can create proper cache keys.
+    """
+
+    def __init__(self, get_response):
+        self.get_response = get_response
+
+    def __call__(self, request):
+        # do something only if request contains a Bearer token
+        if request.META.get("HTTP_AUTHORIZATION", "").startswith("Bearer"):
+            if not hasattr(request, "user") or request.user.is_anonymous:
+                user = authenticate(request=request)
+                if user:
+                    request.user = request._cached_user = user
+
+        response = self.get_response(request)
+        patch_vary_headers(response, ("Authorization",))
+        return response
+
+
+class OAuth2ExtraTokenMiddleware:
+    def __init__(self, get_response):
+        self.get_response = get_response
+
+    def __call__(self, request):
+        authheader = request.META.get("HTTP_AUTHORIZATION", "")
+        if authheader.startswith("Bearer"):
+            tokenstring = authheader.split()[1]
+            AccessToken = get_access_token_model()
+            try:
+                token_checksum = hashlib.sha256(tokenstring.encode("utf-8")).hexdigest()
+                token = AccessToken.objects.get(token_checksum=token_checksum)
+                request.access_token = token
+            except AccessToken.DoesNotExist as e:
+                log.exception(e)
+        response = self.get_response(request)
+        return response

venv/lib/python3.11/site-packages/oauth2_provider/migrations/0001_initial.py

@@ -0,0 +1,105 @@
+from django.conf import settings
+import django.db.models.deletion
+from django.db import migrations, models
+
+import oauth2_provider.generators
+import oauth2_provider.validators
+from oauth2_provider.settings import oauth2_settings
+
+
+class Migration(migrations.Migration):
+    """
+    The following migrations are squashed here:
+    - 0001_initial.py
+    - 0002_08_updates.py
+    - 0003_auto_20160316_1503.py
+    - 0004_auto_20160525_1623.py
+    - 0005_auto_20170514_1141.py
+    - 0006_auto_20171214_2232.py
+    """
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL)
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Application',
+            fields=[
+                ('id', models.BigAutoField(serialize=False, primary_key=True)),
+                ('client_id', models.CharField(default=oauth2_provider.generators.generate_client_id, unique=True, max_length=100, db_index=True)),
+                ('redirect_uris', models.TextField(help_text='Allowed URIs list, space separated', blank=True)),
+                ('client_type', models.CharField(max_length=32, choices=[('confidential', 'Confidential'), ('public', 'Public')])),
+                ('authorization_grant_type', models.CharField(max_length=32, choices=[('authorization-code', 'Authorization code'), ('implicit', 'Implicit'), ('password', 'Resource owner password-based'), ('client-credentials', 'Client credentials')])),
+                ('client_secret', models.CharField(default=oauth2_provider.generators.generate_client_secret, max_length=255, db_index=True, blank=True)),
+                ('name', models.CharField(max_length=255, blank=True)),
+                ('user', models.ForeignKey(related_name="oauth2_provider_application", blank=True, to=settings.AUTH_USER_MODEL, null=True, on_delete=models.CASCADE)),
+                ('skip_authorization', models.BooleanField(default=False)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+            ],
+            options={
+                'abstract': False,
+                'swappable': 'OAUTH2_PROVIDER_APPLICATION_MODEL',
+            },
+        ),
+        migrations.CreateModel(
+            name='AccessToken',
+            fields=[
+                ('id', models.BigAutoField(serialize=False, primary_key=True)),
+                ('token', models.CharField(unique=True, max_length=255)),
+                ('expires', models.DateTimeField()),
+                ('scope', models.TextField(blank=True)),
+                ('application', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to=oauth2_settings.APPLICATION_MODEL)),
+                ('user', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='oauth2_provider_accesstoken', to=settings.AUTH_USER_MODEL)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+                # Circular reference. Can't add it here.
+                #('source_refresh_token', models.OneToOneField(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to=oauth2_settings.REFRESH_TOKEN_MODEL, related_name="refreshed_access_token")),
+            ],
+            options={
+                'abstract': False,
+                'swappable': 'OAUTH2_PROVIDER_ACCESS_TOKEN_MODEL',
+            },
+        ),
+        migrations.CreateModel(
+            name='Grant',
+            fields=[
+                ('id', models.BigAutoField(serialize=False, primary_key=True)),
+                ('code', models.CharField(unique=True, max_length=255)),
+                ('expires', models.DateTimeField()),
+                ('redirect_uri', models.CharField(max_length=255)),
+                ('scope', models.TextField(blank=True)),
+                ('application', models.ForeignKey(to=oauth2_settings.APPLICATION_MODEL, on_delete=models.CASCADE)),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='oauth2_provider_grant', to=settings.AUTH_USER_MODEL)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+            ],
+            options={
+                'abstract': False,
+                'swappable': 'OAUTH2_PROVIDER_GRANT_MODEL',
+            },
+        ),
+        migrations.CreateModel(
+            name='RefreshToken',
+            fields=[
+                ('id', models.BigAutoField(serialize=False, primary_key=True)),
+                ('token', models.CharField(max_length=255)),
+                ('access_token', models.OneToOneField(blank=True, null=True, related_name="refresh_token", to=oauth2_settings.ACCESS_TOKEN_MODEL, on_delete=models.SET_NULL)),
+                ('application', models.ForeignKey(to=oauth2_settings.APPLICATION_MODEL, on_delete=models.CASCADE)),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='oauth2_provider_refreshtoken', to=settings.AUTH_USER_MODEL)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+                ('revoked', models.DateTimeField(null=True)),
+            ],
+            options={
+                'abstract': False,
+                'swappable': 'OAUTH2_PROVIDER_REFRESH_TOKEN_MODEL',
+                'unique_together': set([("token", "revoked")]),
+            },
+        ),
+        migrations.AddField(
+            model_name='AccessToken',
+            name='source_refresh_token',
+            field=models.OneToOneField(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to=oauth2_settings.REFRESH_TOKEN_MODEL, related_name="refreshed_access_token"),
+        ),
+    ]

venv/lib/python3.11/site-packages/oauth2_provider/migrations/0002_auto_20190406_1805.py

@@ -0,0 +1,23 @@
+# Generated by Django 2.2 on 2019-04-06 18:05
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('oauth2_provider', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='grant',
+            name='code_challenge',
+            field=models.CharField(blank=True, default='', max_length=128),
+        ),
+        migrations.AddField(
+            model_name='grant',
+            name='code_challenge_method',
+            field=models.CharField(blank=True, choices=[('plain', 'plain'), ('S256', 'S256')], default='', max_length=10),
+        ),
+    ]

venv/lib/python3.11/site-packages/oauth2_provider/migrations/0003_auto_20201211_1314.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.1.4 on 2020-12-11 13:14
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('oauth2_provider', '0002_auto_20190406_1805'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='grant',
+            name='redirect_uri',
+            field=models.TextField(),
+        ),
+    ]

venv/lib/python3.11/site-packages/oauth2_provider/migrations/0004_auto_20200902_2022.py

@@ -0,0 +1,60 @@
+import uuid
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+from oauth2_provider.settings import oauth2_settings
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('oauth2_provider', '0003_auto_20201211_1314'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='application',
+            name='algorithm',
+            field=models.CharField(blank=True, choices=[("", "No OIDC support"), ('RS256', 'RSA with SHA-2 256'), ('HS256', 'HMAC with SHA-2 256')], default='', max_length=5),
+        ),
+        migrations.AlterField(
+            model_name='application',
+            name='authorization_grant_type',
+            field=models.CharField(choices=[('authorization-code', 'Authorization code'), ('implicit', 'Implicit'), ('password', 'Resource owner password-based'), ('client-credentials', 'Client credentials'), ('openid-hybrid', 'OpenID connect hybrid')], max_length=32),
+        ),
+        migrations.CreateModel(
+            name='IDToken',
+            fields=[
+                ('id', models.BigAutoField(primary_key=True, serialize=False)),
+                ("jti", models.UUIDField(unique=True, default=uuid.uuid4, editable=False, verbose_name="JWT Token ID")),
+                ('expires', models.DateTimeField()),
+                ('scope', models.TextField(blank=True)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+                ('application', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to=oauth2_settings.APPLICATION_MODEL)),
+                ('user', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='oauth2_provider_idtoken', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'abstract': False,
+                'swappable': 'OAUTH2_PROVIDER_ID_TOKEN_MODEL',
+            },
+        ),
+        migrations.AddField(
+            model_name='accesstoken',
+            name='id_token',
+            field=models.OneToOneField(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='access_token', to=oauth2_settings.ID_TOKEN_MODEL),
+        ),
+        migrations.AddField(
+            model_name="grant",
+            name="nonce",
+            field=models.CharField(blank=True, max_length=255, default=""),
+        ),
+        migrations.AddField(
+            model_name="grant",
+            name="claims",
+            field=models.TextField(blank=True),
+        ),
+    ]

venv/lib/python3.11/site-packages/oauth2_provider/migrations/0005_auto_20211222_2352.py

@@ -0,0 +1,39 @@
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('oauth2_provider', '0004_auto_20200902_2022'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='accesstoken',
+            name='user',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='%(app_label)s_%(class)s', to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AlterField(
+            model_name='application',
+            name='user',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='%(app_label)s_%(class)s', to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AlterField(
+            model_name='grant',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='%(app_label)s_%(class)s', to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AlterField(
+            model_name='idtoken',
+            name='user',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='%(app_label)s_%(class)s', to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AlterField(
+            model_name='refreshtoken',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='%(app_label)s_%(class)s', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

venv/lib/python3.11/site-packages/oauth2_provider/migrations/0006_alter_application_client_secret.py

@@ -0,0 +1,43 @@
+import logging
+
+from django.db import migrations
+
+import oauth2_provider.generators
+import oauth2_provider.models
+from oauth2_provider import settings
+
+
+logger = logging.getLogger()
+
+
+def forwards_func(apps, schema_editor):
+    """
+    Forward migration touches every application.client_secret which will cause it to be hashed if not already the case.
+    """
+    Application = apps.get_model(settings.APPLICATION_MODEL)
+    applications = Application._default_manager.all()
+    for application in applications:
+        application.save(update_fields=['client_secret'])
+
+
+def reverse_func(apps, schema_editor):
+    warning_color_code = "\033[93m"
+    end_color_code = "\033[0m"
+    msg = f"\n{warning_color_code}The previously hashed client_secret cannot be reverted, and it remains hashed{end_color_code}"
+    logger.warning(msg)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('oauth2_provider', '0005_auto_20211222_2352'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='application',
+            name='client_secret',
+            field=oauth2_provider.models.ClientSecretField(blank=True, db_index=True, default=oauth2_provider.generators.generate_client_secret, help_text='Hashed on Save. Copy it now if this is a new secret.', max_length=255),
+        ),
+        migrations.RunPython(forwards_func, reverse_func),
+    ]

venv/lib/python3.11/site-packages/oauth2_provider/migrations/0007_application_post_logout_redirect_uris.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.1.5 on 2023-01-14 12:32
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("oauth2_provider", "0006_alter_application_client_secret"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="application",
+            name="post_logout_redirect_uris",
+            field=models.TextField(blank=True, help_text="Allowed Post Logout URIs list, space separated", default=""),
+        ),
+    ]

venv/lib/python3.11/site-packages/oauth2_provider/migrations/0008_alter_accesstoken_token.py

@@ -0,0 +1,17 @@
+# Generated by Django 4.2.4 on 2023-09-11 07:03
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("oauth2_provider", "0007_application_post_logout_redirect_uris"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="accesstoken",
+            name="token",
+            field=models.CharField(db_index=True, max_length=255, unique=True),
+        ),
+    ]

venv/lib/python3.11/site-packages/oauth2_provider/migrations/0009_add_hash_client_secret.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.2.5 on 2023-09-07 19:26
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('oauth2_provider', '0008_alter_accesstoken_token'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='application',
+            name='hash_client_secret',
+            field=models.BooleanField(default=True),
+        ),
+    ]

venv/lib/python3.11/site-packages/oauth2_provider/migrations/0010_application_allowed_origins.py

@@ -0,0 +1,22 @@
+# Generated by Django 4.1.5 on 2023-09-27 20:15
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("oauth2_provider", "0009_add_hash_client_secret"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="application",
+            name="allowed_origins",
+            field=models.TextField(
+                blank=True,
+                help_text="Allowed origins list to enable CORS, space separated",
+                default="",
+            ),
+        ),
+    ]

venv/lib/python3.11/site-packages/oauth2_provider/migrations/0011_refreshtoken_token_family.py

@@ -0,0 +1,19 @@
+# Generated by Django 5.2 on 2024-08-09 16:40
+
+from django.db import migrations, models
+from oauth2_provider.settings import oauth2_settings
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('oauth2_provider', '0010_application_allowed_origins'),
+        migrations.swappable_dependency(oauth2_settings.REFRESH_TOKEN_MODEL)
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='refreshtoken',
+            name='token_family',
+            field=models.UUIDField(blank=True, editable=False, null=True),
+        ),
+    ]

venv/lib/python3.11/site-packages/oauth2_provider/migrations/0012_add_token_checksum.py

@@ -0,0 +1,40 @@
+# Generated by Django 5.0.7 on 2024-07-29 23:13
+
+import oauth2_provider.models
+from django.db import migrations, models
+from oauth2_provider.settings import oauth2_settings
+
+def forwards_func(apps, schema_editor):
+    """
+    Forward migration touches every "old" accesstoken.token which will cause the checksum to be computed.
+    """
+    AccessToken = apps.get_model(oauth2_settings.ACCESS_TOKEN_MODEL)
+    accesstokens = AccessToken._default_manager.all()
+    for accesstoken in accesstokens:
+        accesstoken.save(update_fields=['token_checksum'])
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("oauth2_provider", "0011_refreshtoken_token_family"),
+        migrations.swappable_dependency(oauth2_settings.ACCESS_TOKEN_MODEL),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="accesstoken",
+            name="token_checksum",
+            field=oauth2_provider.models.TokenChecksumField(blank=True, null=True, max_length=64),
+        ),
+        migrations.AlterField(
+            model_name="accesstoken",
+            name="token",
+            field=models.TextField(),
+        ),
+        migrations.RunPython(forwards_func, migrations.RunPython.noop),
+        migrations.AlterField(
+            model_name='accesstoken',
+            name='token_checksum',
+            field=oauth2_provider.models.TokenChecksumField(blank=False, max_length=64,  db_index=True, unique=True),
+        ),
+    ]

venv/lib/python3.11/site-packages/oauth2_provider/models.py

@@ -0,0 +1,836 @@
+import hashlib
+import logging
+import time
+import uuid
+from contextlib import suppress
+from datetime import timedelta
+from urllib.parse import parse_qsl, urlparse
+
+from django.apps import apps
+from django.conf import settings
+from django.contrib.auth.hashers import identify_hasher, make_password
+from django.core.exceptions import ImproperlyConfigured
+from django.db import models, router, transaction
+from django.urls import reverse
+from django.utils import timezone
+from django.utils.translation import gettext_lazy as _
+from jwcrypto import jwk
+from jwcrypto.common import base64url_encode
+from oauthlib.oauth2.rfc6749 import errors
+
+from .generators import generate_client_id, generate_client_secret
+from .scopes import get_scopes_backend
+from .settings import oauth2_settings
+from .utils import jwk_from_pem
+from .validators import AllowedURIValidator
+
+
+logger = logging.getLogger(__name__)
+
+
+class ClientSecretField(models.CharField):
+    def pre_save(self, model_instance, add):
+        secret = getattr(model_instance, self.attname)
+        should_be_hashed = getattr(model_instance, "hash_client_secret", True)
+        if not should_be_hashed:
+            return super().pre_save(model_instance, add)
+
+        try:
+            hasher = identify_hasher(secret)
+            logger.debug(f"{model_instance}: {self.attname} is already hashed with {hasher}.")
+        except ValueError:
+            logger.debug(f"{model_instance}: {self.attname} is not hashed; hashing it now.")
+            hashed_secret = make_password(secret)
+            setattr(model_instance, self.attname, hashed_secret)
+            return hashed_secret
+        return super().pre_save(model_instance, add)
+
+
+class TokenChecksumField(models.CharField):
+    def pre_save(self, model_instance, add):
+        token = getattr(model_instance, "token")
+        checksum = hashlib.sha256(token.encode("utf-8")).hexdigest()
+        setattr(model_instance, self.attname, checksum)
+        return super().pre_save(model_instance, add)
+
+
+class AbstractApplication(models.Model):
+    """
+    An Application instance represents a Client on the Authorization server.
+    Usually an Application is created manually by client's developers after
+    logging in on an Authorization Server.
+
+    Fields:
+
+    * :attr:`client_id` The client identifier issued to the client during the
+                        registration process as described in :rfc:`2.2`
+    * :attr:`user` ref to a Django user
+    * :attr:`redirect_uris` The list of allowed redirect uri. The string
+                            consists of valid URLs separated by space
+    * :attr:`post_logout_redirect_uris` The list of allowed redirect uris after
+                                        an RP initiated logout. The string
+                                        consists of valid URLs separated by space
+    * :attr:`client_type` Client type as described in :rfc:`2.1`
+    * :attr:`authorization_grant_type` Authorization flows available to the
+                                       Application
+    * :attr:`client_secret` Confidential secret issued to the client during
+                            the registration process as described in :rfc:`2.2`
+    * :attr:`name` Friendly name for the Application
+    """
+
+    CLIENT_CONFIDENTIAL = "confidential"
+    CLIENT_PUBLIC = "public"
+    CLIENT_TYPES = (
+        (CLIENT_CONFIDENTIAL, _("Confidential")),
+        (CLIENT_PUBLIC, _("Public")),
+    )
+
+    GRANT_AUTHORIZATION_CODE = "authorization-code"
+    GRANT_IMPLICIT = "implicit"
+    GRANT_PASSWORD = "password"
+    GRANT_CLIENT_CREDENTIALS = "client-credentials"
+    GRANT_OPENID_HYBRID = "openid-hybrid"
+    GRANT_TYPES = (
+        (GRANT_AUTHORIZATION_CODE, _("Authorization code")),
+        (GRANT_IMPLICIT, _("Implicit")),
+        (GRANT_PASSWORD, _("Resource owner password-based")),
+        (GRANT_CLIENT_CREDENTIALS, _("Client credentials")),
+        (GRANT_OPENID_HYBRID, _("OpenID connect hybrid")),
+    )
+
+    NO_ALGORITHM = ""
+    RS256_ALGORITHM = "RS256"
+    HS256_ALGORITHM = "HS256"
+    ALGORITHM_TYPES = (
+        (NO_ALGORITHM, _("No OIDC support")),
+        (RS256_ALGORITHM, _("RSA with SHA-2 256")),
+        (HS256_ALGORITHM, _("HMAC with SHA-2 256")),
+    )
+
+    id = models.BigAutoField(primary_key=True)
+    client_id = models.CharField(max_length=100, unique=True, default=generate_client_id, db_index=True)
+    user = models.ForeignKey(
+        settings.AUTH_USER_MODEL,
+        related_name="%(app_label)s_%(class)s",
+        null=True,
+        blank=True,
+        on_delete=models.CASCADE,
+    )
+
+    redirect_uris = models.TextField(
+        blank=True,
+        help_text=_("Allowed URIs list, space separated"),
+    )
+    post_logout_redirect_uris = models.TextField(
+        blank=True,
+        help_text=_("Allowed Post Logout URIs list, space separated"),
+        default="",
+    )
+    client_type = models.CharField(max_length=32, choices=CLIENT_TYPES)
+    authorization_grant_type = models.CharField(max_length=32, choices=GRANT_TYPES)
+    client_secret = ClientSecretField(
+        max_length=255,
+        blank=True,
+        default=generate_client_secret,
+        db_index=True,
+        help_text=_("Hashed on Save. Copy it now if this is a new secret."),
+    )
+    hash_client_secret = models.BooleanField(default=True)
+    name = models.CharField(max_length=255, blank=True)
+    skip_authorization = models.BooleanField(default=False)
+
+    created = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+    algorithm = models.CharField(max_length=5, choices=ALGORITHM_TYPES, default=NO_ALGORITHM, blank=True)
+    allowed_origins = models.TextField(
+        blank=True,
+        help_text=_("Allowed origins list to enable CORS, space separated"),
+        default="",
+    )
+
+    class Meta:
+        abstract = True
+
+    def __str__(self):
+        return self.name or self.client_id
+
+    @property
+    def default_redirect_uri(self):
+        """
+        Returns the default redirect_uri, *if* only one is registered.
+        """
+        if self.redirect_uris:
+            uris = self.redirect_uris.split()
+            if len(uris) == 1:
+                return self.redirect_uris.split().pop(0)
+            raise errors.MissingRedirectURIError()
+
+        assert False, (
+            "If you are using implicit, authorization_code "
+            "or all-in-one grant_type, you must define "
+            "redirect_uris field in your Application model"
+        )
+
+    def redirect_uri_allowed(self, uri):
+        """
+        Checks if given url is one of the items in :attr:`redirect_uris` string
+
+        :param uri: Url to check
+        """
+        return redirect_to_uri_allowed(uri, self.redirect_uris.split())
+
+    def post_logout_redirect_uri_allowed(self, uri):
+        """
+        Checks if given URI is one of the items in :attr:`post_logout_redirect_uris` string
+
+        :param uri: URI to check
+        """
+        return redirect_to_uri_allowed(uri, self.post_logout_redirect_uris.split())
+
+    def origin_allowed(self, origin):
+        """
+        Checks if given origin is one of the items in :attr:`allowed_origins` string
+
+        :param origin: Origin to check
+        """
+        return self.allowed_origins and is_origin_allowed(origin, self.allowed_origins.split())
+
+    def clean(self):
+        from django.core.exceptions import ValidationError
+
+        grant_types = (
+            AbstractApplication.GRANT_AUTHORIZATION_CODE,
+            AbstractApplication.GRANT_IMPLICIT,
+            AbstractApplication.GRANT_OPENID_HYBRID,
+        )
+        hs_forbidden_grant_types = (
+            AbstractApplication.GRANT_IMPLICIT,
+            AbstractApplication.GRANT_OPENID_HYBRID,
+        )
+
+        redirect_uris = self.redirect_uris.strip().split()
+        allowed_schemes = set(s.lower() for s in self.get_allowed_schemes())
+
+        if redirect_uris:
+            validator = AllowedURIValidator(
+                allowed_schemes, name="redirect uri", allow_path=True, allow_query=True
+            )
+            for uri in redirect_uris:
+                validator(uri)
+
+        elif self.authorization_grant_type in grant_types:
+            raise ValidationError(
+                _("redirect_uris cannot be empty with grant_type {grant_type}").format(
+                    grant_type=self.authorization_grant_type
+                )
+            )
+        allowed_origins = self.allowed_origins.strip().split()
+        if allowed_origins:
+            # oauthlib allows only https scheme for CORS
+            validator = AllowedURIValidator(oauth2_settings.ALLOWED_SCHEMES, "allowed origin")
+            for uri in allowed_origins:
+                validator(uri)
+
+        if self.algorithm == AbstractApplication.RS256_ALGORITHM:
+            if not oauth2_settings.OIDC_RSA_PRIVATE_KEY:
+                raise ValidationError(_("You must set OIDC_RSA_PRIVATE_KEY to use RSA algorithm"))
+
+        if self.algorithm == AbstractApplication.HS256_ALGORITHM:
+            if any(
+                (
+                    self.authorization_grant_type in hs_forbidden_grant_types,
+                    self.client_type == Application.CLIENT_PUBLIC,
+                )
+            ):
+                raise ValidationError(_("You cannot use HS256 with public grants or clients"))
+
+    def get_absolute_url(self):
+        return reverse("oauth2_provider:detail", args=[str(self.pk)])
+
+    def get_allowed_schemes(self):
+        """
+        Returns the list of redirect schemes allowed by the Application.
+        By default, returns `ALLOWED_REDIRECT_URI_SCHEMES`.
+        """
+        return oauth2_settings.ALLOWED_REDIRECT_URI_SCHEMES
+
+    def allows_grant_type(self, *grant_types):
+        return self.authorization_grant_type in grant_types
+
+    def is_usable(self, request):
+        """
+        Determines whether the application can be used.
+
+        :param request: The oauthlib.common.Request being processed.
+        """
+        return True
+
+    @property
+    def jwk_key(self):
+        if self.algorithm == AbstractApplication.RS256_ALGORITHM:
+            if not oauth2_settings.OIDC_RSA_PRIVATE_KEY:
+                raise ImproperlyConfigured("You must set OIDC_RSA_PRIVATE_KEY to use RSA algorithm")
+            return jwk_from_pem(oauth2_settings.OIDC_RSA_PRIVATE_KEY)
+        elif self.algorithm == AbstractApplication.HS256_ALGORITHM:
+            return jwk.JWK(kty="oct", k=base64url_encode(self.client_secret))
+        raise ImproperlyConfigured("This application does not support signed tokens")
+
+
+class ApplicationManager(models.Manager):
+    def get_by_natural_key(self, client_id):
+        return self.get(client_id=client_id)
+
+
+class Application(AbstractApplication):
+    objects = ApplicationManager()
+
+    class Meta(AbstractApplication.Meta):
+        swappable = "OAUTH2_PROVIDER_APPLICATION_MODEL"
+
+    def natural_key(self):
+        return (self.client_id,)
+
+
+class AbstractGrant(models.Model):
+    """
+    A Grant instance represents a token with a short lifetime that can
+    be swapped for an access token, as described in :rfc:`4.1.2`
+
+    Fields:
+
+    * :attr:`user` The Django user who requested the grant
+    * :attr:`code` The authorization code generated by the authorization server
+    * :attr:`application` Application instance this grant was asked for
+    * :attr:`expires` Expire time in seconds, defaults to
+                      :data:`settings.AUTHORIZATION_CODE_EXPIRE_SECONDS`
+    * :attr:`redirect_uri` Self explained
+    * :attr:`scope` Required scopes, optional
+    * :attr:`code_challenge` PKCE code challenge
+    * :attr:`code_challenge_method` PKCE code challenge transform algorithm
+    """
+
+    CODE_CHALLENGE_PLAIN = "plain"
+    CODE_CHALLENGE_S256 = "S256"
+    CODE_CHALLENGE_METHODS = ((CODE_CHALLENGE_PLAIN, "plain"), (CODE_CHALLENGE_S256, "S256"))
+
+    id = models.BigAutoField(primary_key=True)
+    user = models.ForeignKey(
+        settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="%(app_label)s_%(class)s"
+    )
+    code = models.CharField(max_length=255, unique=True)  # code comes from oauthlib
+    application = models.ForeignKey(oauth2_settings.APPLICATION_MODEL, on_delete=models.CASCADE)
+    expires = models.DateTimeField()
+    redirect_uri = models.TextField()
+    scope = models.TextField(blank=True)
+
+    created = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+
+    code_challenge = models.CharField(max_length=128, blank=True, default="")
+    code_challenge_method = models.CharField(
+        max_length=10, blank=True, default="", choices=CODE_CHALLENGE_METHODS
+    )
+
+    nonce = models.CharField(max_length=255, blank=True, default="")
+    claims = models.TextField(blank=True)
+
+    def is_expired(self):
+        """
+        Check token expiration with timezone awareness
+        """
+        if not self.expires:
+            return True
+
+        return timezone.now() >= self.expires
+
+    def redirect_uri_allowed(self, uri):
+        return uri == self.redirect_uri
+
+    def __str__(self):
+        return self.code
+
+    class Meta:
+        abstract = True
+
+
+class Grant(AbstractGrant):
+    class Meta(AbstractGrant.Meta):
+        swappable = "OAUTH2_PROVIDER_GRANT_MODEL"
+
+
+class AbstractAccessToken(models.Model):
+    """
+    An AccessToken instance represents the actual access token to
+    access user's resources, as in :rfc:`5`.
+
+    Fields:
+
+    * :attr:`user` The Django user representing resources" owner
+    * :attr:`source_refresh_token` If from a refresh, the consumed RefeshToken
+    * :attr:`token` Access token
+    * :attr:`application` Application instance
+    * :attr:`expires` Date and time of token expiration, in DateTime format
+    * :attr:`scope` Allowed scopes
+    """
+
+    id = models.BigAutoField(primary_key=True)
+    user = models.ForeignKey(
+        settings.AUTH_USER_MODEL,
+        on_delete=models.CASCADE,
+        blank=True,
+        null=True,
+        related_name="%(app_label)s_%(class)s",
+    )
+    source_refresh_token = models.OneToOneField(
+        # unique=True implied by the OneToOneField
+        oauth2_settings.REFRESH_TOKEN_MODEL,
+        on_delete=models.SET_NULL,
+        blank=True,
+        null=True,
+        related_name="refreshed_access_token",
+    )
+    token = models.TextField()
+    token_checksum = TokenChecksumField(
+        max_length=64,
+        blank=False,
+        unique=True,
+        db_index=True,
+    )
+    id_token = models.OneToOneField(
+        oauth2_settings.ID_TOKEN_MODEL,
+        on_delete=models.CASCADE,
+        blank=True,
+        null=True,
+        related_name="access_token",
+    )
+    application = models.ForeignKey(
+        oauth2_settings.APPLICATION_MODEL,
+        on_delete=models.CASCADE,
+        blank=True,
+        null=True,
+    )
+    expires = models.DateTimeField()
+    scope = models.TextField(blank=True)
+
+    created = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+
+    def is_valid(self, scopes=None):
+        """
+        Checks if the access token is valid.
+
+        :param scopes: An iterable containing the scopes to check or None
+        """
+        return not self.is_expired() and self.allow_scopes(scopes)
+
+    def is_expired(self):
+        """
+        Check token expiration with timezone awareness
+        """
+        if not self.expires:
+            return True
+
+        return timezone.now() >= self.expires
+
+    def allow_scopes(self, scopes):
+        """
+        Check if the token allows the provided scopes
+
+        :param scopes: An iterable containing the scopes to check
+        """
+        if not scopes:
+            return True
+
+        provided_scopes = set(self.scope.split())
+        resource_scopes = set(scopes)
+
+        return resource_scopes.issubset(provided_scopes)
+
+    def revoke(self):
+        """
+        Convenience method to uniform tokens" interface, for now
+        simply remove this token from the database in order to revoke it.
+        """
+        self.delete()
+
+    @property
+    def scopes(self):
+        """
+        Returns a dictionary of allowed scope names (as keys) with their descriptions (as values)
+        """
+        all_scopes = get_scopes_backend().get_all_scopes()
+        token_scopes = self.scope.split()
+        return {name: desc for name, desc in all_scopes.items() if name in token_scopes}
+
+    def __str__(self):
+        return self.token
+
+    class Meta:
+        abstract = True
+
+
+class AccessToken(AbstractAccessToken):
+    class Meta(AbstractAccessToken.Meta):
+        swappable = "OAUTH2_PROVIDER_ACCESS_TOKEN_MODEL"
+
+
+class AbstractRefreshToken(models.Model):
+    """
+    A RefreshToken instance represents a token that can be swapped for a new
+    access token when it expires.
+
+    Fields:
+
+    * :attr:`user` The Django user representing resources" owner
+    * :attr:`token` Token value
+    * :attr:`application` Application instance
+    * :attr:`access_token` AccessToken instance this refresh token is
+                           bounded to
+    * :attr:`revoked` Timestamp of when this refresh token was revoked
+    """
+
+    id = models.BigAutoField(primary_key=True)
+    user = models.ForeignKey(
+        settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="%(app_label)s_%(class)s"
+    )
+    token = models.CharField(max_length=255)
+    application = models.ForeignKey(oauth2_settings.APPLICATION_MODEL, on_delete=models.CASCADE)
+    access_token = models.OneToOneField(
+        oauth2_settings.ACCESS_TOKEN_MODEL,
+        on_delete=models.SET_NULL,
+        blank=True,
+        null=True,
+        related_name="refresh_token",
+    )
+    token_family = models.UUIDField(null=True, blank=True, editable=False)
+
+    created = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+    revoked = models.DateTimeField(null=True)
+
+    def revoke(self):
+        """
+        Mark this refresh token revoked and revoke related access token
+        """
+        access_token_model = get_access_token_model()
+        access_token_database = router.db_for_write(access_token_model)
+        refresh_token_model = get_refresh_token_model()
+
+        # Use the access_token_database instead of making the assumption it is in 'default'.
+        with transaction.atomic(using=access_token_database):
+            token = refresh_token_model.objects.select_for_update().filter(pk=self.pk, revoked__isnull=True)
+            if not token:
+                return
+            self = list(token)[0]
+
+            with suppress(access_token_model.DoesNotExist):
+                access_token_model.objects.get(id=self.access_token_id).revoke()
+
+            self.access_token = None
+            self.revoked = timezone.now()
+            self.save()
+
+    def __str__(self):
+        return self.token
+
+    class Meta:
+        abstract = True
+        unique_together = (
+            "token",
+            "revoked",
+        )
+
+
+class RefreshToken(AbstractRefreshToken):
+    class Meta(AbstractRefreshToken.Meta):
+        swappable = "OAUTH2_PROVIDER_REFRESH_TOKEN_MODEL"
+
+
+class AbstractIDToken(models.Model):
+    """
+    An IDToken instance represents the actual token to
+    access user's resources, as in :openid:`2`.
+
+    Fields:
+
+    * :attr:`user` The Django user representing resources' owner
+    * :attr:`jti` ID token JWT Token ID, to identify an individual token
+    * :attr:`application` Application instance
+    * :attr:`expires` Date and time of token expiration, in DateTime format
+    * :attr:`scope` Allowed scopes
+    * :attr:`created` Date and time of token creation, in DateTime format
+    * :attr:`updated` Date and time of token update, in DateTime format
+    """
+
+    id = models.BigAutoField(primary_key=True)
+    user = models.ForeignKey(
+        settings.AUTH_USER_MODEL,
+        on_delete=models.CASCADE,
+        blank=True,
+        null=True,
+        related_name="%(app_label)s_%(class)s",
+    )
+    jti = models.UUIDField(unique=True, default=uuid.uuid4, editable=False, verbose_name="JWT Token ID")
+    application = models.ForeignKey(
+        oauth2_settings.APPLICATION_MODEL,
+        on_delete=models.CASCADE,
+        blank=True,
+        null=True,
+    )
+    expires = models.DateTimeField()
+    scope = models.TextField(blank=True)
+
+    created = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+
+    def is_valid(self, scopes=None):
+        """
+        Checks if the access token is valid.
+
+        :param scopes: An iterable containing the scopes to check or None
+        """
+        return not self.is_expired() and self.allow_scopes(scopes)
+
+    def is_expired(self):
+        """
+        Check token expiration with timezone awareness
+        """
+        if not self.expires:
+            return True
+
+        return timezone.now() >= self.expires
+
+    def allow_scopes(self, scopes):
+        """
+        Check if the token allows the provided scopes
+
+        :param scopes: An iterable containing the scopes to check
+        """
+        if not scopes:
+            return True
+
+        provided_scopes = set(self.scope.split())
+        resource_scopes = set(scopes)
+
+        return resource_scopes.issubset(provided_scopes)
+
+    def revoke(self):
+        """
+        Convenience method to uniform tokens' interface, for now
+        simply remove this token from the database in order to revoke it.
+        """
+        self.delete()
+
+    @property
+    def scopes(self):
+        """
+        Returns a dictionary of allowed scope names (as keys) with their descriptions (as values)
+        """
+        all_scopes = get_scopes_backend().get_all_scopes()
+        token_scopes = self.scope.split()
+        return {name: desc for name, desc in all_scopes.items() if name in token_scopes}
+
+    def __str__(self):
+        return "JTI: {self.jti} User: {self.user_id}".format(self=self)
+
+    class Meta:
+        abstract = True
+
+
+class IDToken(AbstractIDToken):
+    class Meta(AbstractIDToken.Meta):
+        swappable = "OAUTH2_PROVIDER_ID_TOKEN_MODEL"
+
+
+def get_application_model():
+    """Return the Application model that is active in this project."""
+    return apps.get_model(oauth2_settings.APPLICATION_MODEL)
+
+
+def get_grant_model():
+    """Return the Grant model that is active in this project."""
+    return apps.get_model(oauth2_settings.GRANT_MODEL)
+
+
+def get_access_token_model():
+    """Return the AccessToken model that is active in this project."""
+    return apps.get_model(oauth2_settings.ACCESS_TOKEN_MODEL)
+
+
+def get_id_token_model():
+    """Return the IDToken model that is active in this project."""
+    return apps.get_model(oauth2_settings.ID_TOKEN_MODEL)
+
+
+def get_refresh_token_model():
+    """Return the RefreshToken model that is active in this project."""
+    return apps.get_model(oauth2_settings.REFRESH_TOKEN_MODEL)
+
+
+def get_application_admin_class():
+    """Return the Application admin class that is active in this project."""
+    application_admin_class = oauth2_settings.APPLICATION_ADMIN_CLASS
+    return application_admin_class
+
+
+def get_access_token_admin_class():
+    """Return the AccessToken admin class that is active in this project."""
+    access_token_admin_class = oauth2_settings.ACCESS_TOKEN_ADMIN_CLASS
+    return access_token_admin_class
+
+
+def get_grant_admin_class():
+    """Return the Grant admin class that is active in this project."""
+    grant_admin_class = oauth2_settings.GRANT_ADMIN_CLASS
+    return grant_admin_class
+
+
+def get_id_token_admin_class():
+    """Return the IDToken admin class that is active in this project."""
+    id_token_admin_class = oauth2_settings.ID_TOKEN_ADMIN_CLASS
+    return id_token_admin_class
+
+
+def get_refresh_token_admin_class():
+    """Return the RefreshToken admin class that is active in this project."""
+    refresh_token_admin_class = oauth2_settings.REFRESH_TOKEN_ADMIN_CLASS
+    return refresh_token_admin_class
+
+
+def clear_expired():
+    def batch_delete(queryset, query):
+        CLEAR_EXPIRED_TOKENS_BATCH_SIZE = oauth2_settings.CLEAR_EXPIRED_TOKENS_BATCH_SIZE
+        CLEAR_EXPIRED_TOKENS_BATCH_INTERVAL = oauth2_settings.CLEAR_EXPIRED_TOKENS_BATCH_INTERVAL
+        current_no = start_no = queryset.count()
+
+        while current_no:
+            flat_queryset = queryset.values_list("id", flat=True)[:CLEAR_EXPIRED_TOKENS_BATCH_SIZE]
+            batch_length = flat_queryset.count()
+            queryset.model.objects.filter(id__in=list(flat_queryset)).delete()
+            logger.debug(f"{batch_length} tokens deleted, {current_no-batch_length} left")
+            queryset = queryset.model.objects.filter(query)
+            time.sleep(CLEAR_EXPIRED_TOKENS_BATCH_INTERVAL)
+            current_no = queryset.count()
+
+        stop_no = queryset.model.objects.filter(query).count()
+        deleted = start_no - stop_no
+        return deleted
+
+    now = timezone.now()
+    refresh_expire_at = None
+    access_token_model = get_access_token_model()
+    refresh_token_model = get_refresh_token_model()
+    id_token_model = get_id_token_model()
+    grant_model = get_grant_model()
+    REFRESH_TOKEN_EXPIRE_SECONDS = oauth2_settings.REFRESH_TOKEN_EXPIRE_SECONDS
+
+    if REFRESH_TOKEN_EXPIRE_SECONDS:
+        if not isinstance(REFRESH_TOKEN_EXPIRE_SECONDS, timedelta):
+            try:
+                REFRESH_TOKEN_EXPIRE_SECONDS = timedelta(seconds=REFRESH_TOKEN_EXPIRE_SECONDS)
+            except TypeError:
+                e = "REFRESH_TOKEN_EXPIRE_SECONDS must be either a timedelta or seconds"
+                raise ImproperlyConfigured(e)
+        refresh_expire_at = now - REFRESH_TOKEN_EXPIRE_SECONDS
+
+    if refresh_expire_at:
+        revoked_query = models.Q(revoked__lt=refresh_expire_at)
+        revoked = refresh_token_model.objects.filter(revoked_query)
+
+        revoked_deleted_no = batch_delete(revoked, revoked_query)
+        logger.info("%s Revoked refresh tokens deleted", revoked_deleted_no)
+
+        expired_query = models.Q(access_token__expires__lt=refresh_expire_at)
+        expired = refresh_token_model.objects.filter(expired_query)
+
+        expired_deleted_no = batch_delete(expired, expired_query)
+        logger.info("%s Expired refresh tokens deleted", expired_deleted_no)
+    else:
+        logger.info("refresh_expire_at is %s. No refresh tokens deleted.", refresh_expire_at)
+
+    access_token_query = models.Q(refresh_token__isnull=True, expires__lt=now)
+    access_tokens = access_token_model.objects.filter(access_token_query)
+
+    access_tokens_delete_no = batch_delete(access_tokens, access_token_query)
+    logger.info("%s Expired access tokens deleted", access_tokens_delete_no)
+
+    id_token_query = models.Q(access_token__isnull=True, expires__lt=now)
+    id_tokens = id_token_model.objects.filter(id_token_query)
+
+    id_tokens_delete_no = batch_delete(id_tokens, id_token_query)
+    logger.info("%s Expired ID tokens deleted", id_tokens_delete_no)
+
+    grants_query = models.Q(expires__lt=now)
+    grants = grant_model.objects.filter(grants_query)
+
+    grants_deleted_no = batch_delete(grants, grants_query)
+    logger.info("%s Expired grant tokens deleted", grants_deleted_no)
+
+
+def redirect_to_uri_allowed(uri, allowed_uris):
+    """
+    Checks if a given uri can be redirected to based on the provided allowed_uris configuration.
+
+    On top of exact matches, this function also handles loopback IPs based on RFC 8252.
+
+    :param uri: URI to check
+    :param allowed_uris: A list of URIs that are allowed
+    """
+
+    parsed_uri = urlparse(uri)
+    uqs_set = set(parse_qsl(parsed_uri.query))
+    for allowed_uri in allowed_uris:
+        parsed_allowed_uri = urlparse(allowed_uri)
+
+        # From RFC 8252 (Section 7.3)
+        #
+        # Loopback redirect URIs use the "http" scheme
+        # [...]
+        # The authorization server MUST allow any port to be specified at the
+        # time of the request for loopback IP redirect URIs, to accommodate
+        # clients that obtain an available ephemeral port from the operating
+        # system at the time of the request.
+
+        allowed_uri_is_loopback = (
+            parsed_allowed_uri.scheme == "http"
+            and parsed_allowed_uri.hostname in ["127.0.0.1", "::1"]
+            and parsed_allowed_uri.port is None
+        )
+        if (
+            allowed_uri_is_loopback
+            and parsed_allowed_uri.scheme == parsed_uri.scheme
+            and parsed_allowed_uri.hostname == parsed_uri.hostname
+            and parsed_allowed_uri.path == parsed_uri.path
+        ) or (
+            parsed_allowed_uri.scheme == parsed_uri.scheme
+            and parsed_allowed_uri.netloc == parsed_uri.netloc
+            and parsed_allowed_uri.path == parsed_uri.path
+        ):
+            aqs_set = set(parse_qsl(parsed_allowed_uri.query))
+            if aqs_set.issubset(uqs_set):
+                return True
+
+    return False
+
+
+def is_origin_allowed(origin, allowed_origins):
+    """
+    Checks if a given origin uri is allowed based on the provided allowed_origins configuration.
+
+    :param origin: Origin URI to check
+    :param allowed_origins: A list of Origin URIs that are allowed
+    """
+
+    parsed_origin = urlparse(origin)
+
+    if parsed_origin.scheme not in oauth2_settings.ALLOWED_SCHEMES:
+        return False
+
+    for allowed_origin in allowed_origins:
+        parsed_allowed_origin = urlparse(allowed_origin)
+        if (
+            parsed_allowed_origin.scheme == parsed_origin.scheme
+            and parsed_allowed_origin.netloc == parsed_origin.netloc
+        ):
+            return True
+    return False

venv/lib/python3.11/site-packages/oauth2_provider/oauth2_backends.py

@@ -0,0 +1,250 @@
+import json
+from urllib.parse import urlparse, urlunparse
+
+from oauthlib import oauth2
+from oauthlib.common import Request as OauthlibRequest
+from oauthlib.common import quote, urlencode, urlencoded
+from oauthlib.oauth2 import OAuth2Error
+
+from .exceptions import FatalClientError, OAuthToolkitError
+from .settings import oauth2_settings
+
+
+class OAuthLibCore:
+    """
+    Wrapper for oauth Server providing django-specific interfaces.
+
+    Meant for things like extracting request data and converting
+    everything to formats more palatable for oauthlib's Server.
+    """
+
+    def __init__(self, server=None):
+        """
+        :params server: An instance of oauthlib.oauth2.Server class
+        """
+        validator_class = oauth2_settings.OAUTH2_VALIDATOR_CLASS
+        validator = validator_class()
+        server_kwargs = oauth2_settings.server_kwargs
+        self.server = server or oauth2_settings.OAUTH2_SERVER_CLASS(validator, **server_kwargs)
+
+    def _get_escaped_full_path(self, request):
+        """
+        Django considers "safe" some characters that aren't so for oauthlib.
+        We have to search for them and properly escape.
+        """
+        parsed = list(urlparse(request.get_full_path()))
+        unsafe = set(c for c in parsed[4]).difference(urlencoded)
+        for c in unsafe:
+            parsed[4] = parsed[4].replace(c, quote(c, safe=b""))
+
+        return urlunparse(parsed)
+
+    def _get_extra_credentials(self, request):
+        """
+        Produce extra credentials for token response. This dictionary will be
+        merged with the response.
+        See also: `oauthlib.oauth2.rfc6749.TokenEndpoint.create_token_response`
+
+        :param request: The current django.http.HttpRequest object
+        :return: dictionary of extra credentials or None (default)
+        """
+        return None
+
+    def _extract_params(self, request):
+        """
+        Extract parameters from the Django request object.
+        Such parameters will then be passed to OAuthLib to build its own
+        Request object. The body should be encoded using OAuthLib urlencoded.
+        """
+        uri = self._get_escaped_full_path(request)
+        http_method = request.method
+        headers = self.extract_headers(request)
+        body = urlencode(self.extract_body(request))
+        return uri, http_method, body, headers
+
+    def extract_headers(self, request):
+        """
+        Extracts headers from the Django request object
+        :param request: The current django.http.HttpRequest object
+        :return: a dictionary with OAuthLib needed headers
+        """
+        headers = request.META.copy()
+        if "wsgi.input" in headers:
+            del headers["wsgi.input"]
+        if "wsgi.errors" in headers:
+            del headers["wsgi.errors"]
+        if "HTTP_AUTHORIZATION" in headers:
+            headers["Authorization"] = headers["HTTP_AUTHORIZATION"]
+        # Add Access-Control-Allow-Origin header to the token endpoint response for authentication code grant,
+        # if the origin is allowed by RequestValidator.is_origin_allowed.
+        # https://github.com/oauthlib/oauthlib/pull/791
+        if "HTTP_ORIGIN" in headers:
+            headers["Origin"] = headers["HTTP_ORIGIN"]
+        if request.is_secure():
+            headers["X_DJANGO_OAUTH_TOOLKIT_SECURE"] = "1"
+        elif "X_DJANGO_OAUTH_TOOLKIT_SECURE" in headers:
+            del headers["X_DJANGO_OAUTH_TOOLKIT_SECURE"]
+
+        return headers
+
+    def extract_body(self, request):
+        """
+        Extracts the POST body from the Django request object
+        :param request: The current django.http.HttpRequest object
+        :return: provided POST parameters
+        """
+        return request.POST.items()
+
+    def validate_authorization_request(self, request):
+        """
+        A wrapper method that calls validate_authorization_request on `server_class` instance.
+
+        :param request: The current django.http.HttpRequest object
+        """
+        try:
+            uri, http_method, body, headers = self._extract_params(request)
+            scopes, credentials = self.server.validate_authorization_request(
+                uri, http_method=http_method, body=body, headers=headers
+            )
+
+            return scopes, credentials
+        except oauth2.FatalClientError as error:
+            raise FatalClientError(error=error)
+        except oauth2.OAuth2Error as error:
+            raise OAuthToolkitError(error=error)
+
+    def create_authorization_response(self, request, scopes, credentials, allow):
+        """
+        A wrapper method that calls create_authorization_response on `server_class`
+        instance.
+
+        :param request: The current django.http.HttpRequest object
+        :param scopes: A list of provided scopes
+        :param credentials: Authorization credentials dictionary containing
+                           `client_id`, `state`, `redirect_uri`, `response_type`
+        :param allow: True if the user authorize the client, otherwise False
+        """
+        try:
+            if not allow:
+                raise oauth2.AccessDeniedError(state=credentials.get("state", None))
+
+            # add current user to credentials. this will be used by OAUTH2_VALIDATOR_CLASS
+            credentials["user"] = request.user
+            request_uri, http_method, _, request_headers = self._extract_params(request)
+
+            headers, body, status = self.server.create_authorization_response(
+                uri=request_uri,
+                http_method=http_method,
+                headers=request_headers,
+                scopes=scopes,
+                credentials=credentials,
+            )
+            uri = headers.get("Location", None)
+
+            return uri, headers, body, status
+
+        except oauth2.FatalClientError as error:
+            raise FatalClientError(error=error, redirect_uri=credentials["redirect_uri"])
+        except oauth2.OAuth2Error as error:
+            raise OAuthToolkitError(error=error, redirect_uri=credentials["redirect_uri"])
+
+    def create_token_response(self, request):
+        """
+        A wrapper method that calls create_token_response on `server_class` instance.
+
+        :param request: The current django.http.HttpRequest object
+        """
+        uri, http_method, body, headers = self._extract_params(request)
+        extra_credentials = self._get_extra_credentials(request)
+
+        try:
+            headers, body, status = self.server.create_token_response(
+                uri, http_method, body, headers, extra_credentials
+            )
+            uri = headers.get("Location", None)
+            return uri, headers, body, status
+        except OAuth2Error as exc:
+            return None, exc.headers, exc.json, exc.status_code
+
+    def create_revocation_response(self, request):
+        """
+        A wrapper method that calls create_revocation_response on a
+        `server_class` instance.
+
+        :param request: The current django.http.HttpRequest object
+        """
+        uri, http_method, body, headers = self._extract_params(request)
+
+        headers, body, status = self.server.create_revocation_response(uri, http_method, body, headers)
+        uri = headers.get("Location", None)
+
+        return uri, headers, body, status
+
+    def create_userinfo_response(self, request):
+        """
+        A wrapper method that calls create_userinfo_response on a
+        `server_class` instance.
+
+        :param request: The current django.http.HttpRequest object
+        """
+        uri, http_method, body, headers = self._extract_params(request)
+        try:
+            headers, body, status = self.server.create_userinfo_response(uri, http_method, body, headers)
+            uri = headers.get("Location", None)
+            return uri, headers, body, status
+        except OAuth2Error as exc:
+            return None, exc.headers, exc.json, exc.status_code
+
+    def verify_request(self, request, scopes):
+        """
+        A wrapper method that calls verify_request on `server_class` instance.
+
+        :param request: The current django.http.HttpRequest object
+        :param scopes: A list of scopes required to verify so that request is verified
+        """
+        uri, http_method, body, headers = self._extract_params(request)
+
+        valid, r = self.server.verify_request(uri, http_method, body, headers, scopes=scopes)
+        return valid, r
+
+    def authenticate_client(self, request):
+        """Wrapper to call  `authenticate_client` on `server_class` instance.
+
+        :param request: The current django.http.HttpRequest object
+        """
+        uri, http_method, body, headers = self._extract_params(request)
+        oauth_request = OauthlibRequest(uri, http_method, body, headers)
+        return self.server.request_validator.authenticate_client(oauth_request)
+
+
+class JSONOAuthLibCore(OAuthLibCore):
+    """
+    Extends the default OAuthLibCore to parse correctly application/json requests
+    """
+
+    def extract_body(self, request):
+        """
+        Extracts the JSON body from the Django request object
+        :param request: The current django.http.HttpRequest object
+        :return: provided POST parameters "urlencodable"
+        """
+        try:
+            body = json.loads(request.body.decode("utf-8")).items()
+        except AttributeError:
+            body = ""
+        except ValueError:
+            body = ""
+
+        return body
+
+
+def get_oauthlib_core():
+    """
+    Utility function that returns an instance of
+    `oauth2_provider.backends.OAuthLibCore`
+    """
+    validator_class = oauth2_settings.OAUTH2_VALIDATOR_CLASS
+    validator = validator_class()
+    server_kwargs = oauth2_settings.server_kwargs
+    server = oauth2_settings.OAUTH2_SERVER_CLASS(validator, **server_kwargs)
+    return oauth2_settings.OAUTH2_BACKEND_CLASS(server)

venv/lib/python3.11/site-packages/oauth2_provider/scopes.py

@@ -0,0 +1,50 @@
+from .settings import oauth2_settings
+
+
+class BaseScopes:
+    def get_all_scopes(self):
+        """
+        Return a dict-like object with all the scopes available in the
+        system. The key should be the scope name and the value should be
+        the description.
+
+        ex: {"read": "A read scope", "write": "A write scope"}
+        """
+        raise NotImplementedError("")
+
+    def get_available_scopes(self, application=None, request=None, *args, **kwargs):
+        """
+        Return a list of scopes available for the current application/request.
+
+        TODO: add info on where and why this method is called.
+
+        ex: ["read", "write"]
+        """
+        raise NotImplementedError("")
+
+    def get_default_scopes(self, application=None, request=None, *args, **kwargs):
+        """
+        Return a list of the default scopes for the current application/request.
+        This MUST be a subset of the scopes returned by `get_available_scopes`.
+
+        TODO: add info on where and why this method is called.
+
+        ex: ["read"]
+        """
+        raise NotImplementedError("")
+
+
+class SettingsScopes(BaseScopes):
+    def get_all_scopes(self):
+        return oauth2_settings.SCOPES
+
+    def get_available_scopes(self, application=None, request=None, *args, **kwargs):
+        return oauth2_settings._SCOPES
+
+    def get_default_scopes(self, application=None, request=None, *args, **kwargs):
+        return oauth2_settings._DEFAULT_SCOPES
+
+
+def get_scopes_backend():
+    scopes_class = oauth2_settings.SCOPES_BACKEND_CLASS
+    return scopes_class()

venv/lib/python3.11/site-packages/oauth2_provider/settings.py

@@ -0,0 +1,313 @@
+"""
+This module is largely inspired by django-rest-framework settings.
+
+Settings for the OAuth2 Provider are all namespaced in the OAUTH2_PROVIDER setting.
+For example your project's `settings.py` file might look like this:
+
+OAUTH2_PROVIDER = {
+    "CLIENT_ID_GENERATOR_CLASS":
+        "oauth2_provider.generators.ClientIdGenerator",
+    "CLIENT_SECRET_GENERATOR_CLASS":
+        "oauth2_provider.generators.ClientSecretGenerator",
+}
+
+This module provides the `oauth2_settings` object, that is used to access
+OAuth2 Provider settings, checking for user settings first, then falling
+back to the defaults.
+"""
+
+from django.conf import settings
+from django.core.exceptions import ImproperlyConfigured
+from django.core.signals import setting_changed
+from django.http import HttpRequest
+from django.urls import reverse
+from django.utils.module_loading import import_string
+from oauthlib.common import Request
+
+
+USER_SETTINGS = getattr(settings, "OAUTH2_PROVIDER", None)
+
+APPLICATION_MODEL = getattr(settings, "OAUTH2_PROVIDER_APPLICATION_MODEL", "oauth2_provider.Application")
+ACCESS_TOKEN_MODEL = getattr(settings, "OAUTH2_PROVIDER_ACCESS_TOKEN_MODEL", "oauth2_provider.AccessToken")
+ID_TOKEN_MODEL = getattr(settings, "OAUTH2_PROVIDER_ID_TOKEN_MODEL", "oauth2_provider.IDToken")
+GRANT_MODEL = getattr(settings, "OAUTH2_PROVIDER_GRANT_MODEL", "oauth2_provider.Grant")
+REFRESH_TOKEN_MODEL = getattr(settings, "OAUTH2_PROVIDER_REFRESH_TOKEN_MODEL", "oauth2_provider.RefreshToken")
+
+DEFAULTS = {
+    "CLIENT_ID_GENERATOR_CLASS": "oauth2_provider.generators.ClientIdGenerator",
+    "CLIENT_SECRET_GENERATOR_CLASS": "oauth2_provider.generators.ClientSecretGenerator",
+    "CLIENT_SECRET_GENERATOR_LENGTH": 128,
+    "ACCESS_TOKEN_GENERATOR": None,
+    "REFRESH_TOKEN_GENERATOR": None,
+    "EXTRA_SERVER_KWARGS": {},
+    "OAUTH2_SERVER_CLASS": "oauthlib.oauth2.Server",
+    "OIDC_SERVER_CLASS": "oauthlib.openid.Server",
+    "OAUTH2_VALIDATOR_CLASS": "oauth2_provider.oauth2_validators.OAuth2Validator",
+    "OAUTH2_BACKEND_CLASS": "oauth2_provider.oauth2_backends.OAuthLibCore",
+    "SCOPES": {"read": "Reading scope", "write": "Writing scope"},
+    "DEFAULT_SCOPES": ["__all__"],
+    "SCOPES_BACKEND_CLASS": "oauth2_provider.scopes.SettingsScopes",
+    "READ_SCOPE": "read",
+    "WRITE_SCOPE": "write",
+    "AUTHORIZATION_CODE_EXPIRE_SECONDS": 60,
+    "ACCESS_TOKEN_EXPIRE_SECONDS": 36000,
+    "ID_TOKEN_EXPIRE_SECONDS": 36000,
+    "REFRESH_TOKEN_EXPIRE_SECONDS": None,
+    "REFRESH_TOKEN_GRACE_PERIOD_SECONDS": 0,
+    "REFRESH_TOKEN_REUSE_PROTECTION": False,
+    "ROTATE_REFRESH_TOKEN": True,
+    "ERROR_RESPONSE_WITH_SCOPES": False,
+    "APPLICATION_MODEL": APPLICATION_MODEL,
+    "ACCESS_TOKEN_MODEL": ACCESS_TOKEN_MODEL,
+    "ID_TOKEN_MODEL": ID_TOKEN_MODEL,
+    "GRANT_MODEL": GRANT_MODEL,
+    "REFRESH_TOKEN_MODEL": REFRESH_TOKEN_MODEL,
+    "APPLICATION_ADMIN_CLASS": "oauth2_provider.admin.ApplicationAdmin",
+    "ACCESS_TOKEN_ADMIN_CLASS": "oauth2_provider.admin.AccessTokenAdmin",
+    "GRANT_ADMIN_CLASS": "oauth2_provider.admin.GrantAdmin",
+    "ID_TOKEN_ADMIN_CLASS": "oauth2_provider.admin.IDTokenAdmin",
+    "REFRESH_TOKEN_ADMIN_CLASS": "oauth2_provider.admin.RefreshTokenAdmin",
+    "REQUEST_APPROVAL_PROMPT": "force",
+    "ALLOWED_REDIRECT_URI_SCHEMES": ["http", "https"],
+    "ALLOWED_SCHEMES": ["https"],
+    "OIDC_ENABLED": False,
+    "OIDC_ISS_ENDPOINT": "",
+    "OIDC_USERINFO_ENDPOINT": "",
+    "OIDC_RSA_PRIVATE_KEY": "",
+    "OIDC_RSA_PRIVATE_KEYS_INACTIVE": [],
+    "OIDC_JWKS_MAX_AGE_SECONDS": 3600,
+    "OIDC_RESPONSE_TYPES_SUPPORTED": [
+        "code",
+        "token",
+        "id_token",
+        "id_token token",
+        "code token",
+        "code id_token",
+        "code id_token token",
+    ],
+    "OIDC_SUBJECT_TYPES_SUPPORTED": ["public"],
+    "OIDC_TOKEN_ENDPOINT_AUTH_METHODS_SUPPORTED": [
+        "client_secret_post",
+        "client_secret_basic",
+    ],
+    "OIDC_RP_INITIATED_LOGOUT_ENABLED": False,
+    "OIDC_RP_INITIATED_LOGOUT_ALWAYS_PROMPT": True,
+    "OIDC_RP_INITIATED_LOGOUT_STRICT_REDIRECT_URIS": False,
+    "OIDC_RP_INITIATED_LOGOUT_ACCEPT_EXPIRED_TOKENS": True,
+    "OIDC_RP_INITIATED_LOGOUT_DELETE_TOKENS": True,
+    # Special settings that will be evaluated at runtime
+    "_SCOPES": [],
+    "_DEFAULT_SCOPES": [],
+    # Resource Server with Token Introspection
+    "RESOURCE_SERVER_INTROSPECTION_URL": None,
+    "RESOURCE_SERVER_AUTH_TOKEN": None,
+    "RESOURCE_SERVER_INTROSPECTION_CREDENTIALS": None,
+    "RESOURCE_SERVER_TOKEN_CACHING_SECONDS": 36000,
+    # Authentication Server Exp Timezone: the time zone use dby Auth Server for generate EXP
+    "AUTHENTICATION_SERVER_EXP_TIME_ZONE": "UTC",
+    # Whether or not PKCE is required
+    "PKCE_REQUIRED": True,
+    # Whether to re-create OAuthlibCore on every request.
+    # Should only be required in testing.
+    "ALWAYS_RELOAD_OAUTHLIB_CORE": False,
+    "CLEAR_EXPIRED_TOKENS_BATCH_SIZE": 10000,
+    "CLEAR_EXPIRED_TOKENS_BATCH_INTERVAL": 0,
+}
+
+# List of settings that cannot be empty
+MANDATORY = (
+    "CLIENT_ID_GENERATOR_CLASS",
+    "CLIENT_SECRET_GENERATOR_CLASS",
+    "OAUTH2_SERVER_CLASS",
+    "OAUTH2_VALIDATOR_CLASS",
+    "OAUTH2_BACKEND_CLASS",
+    "SCOPES",
+    "ALLOWED_REDIRECT_URI_SCHEMES",
+    "OIDC_RESPONSE_TYPES_SUPPORTED",
+    "OIDC_SUBJECT_TYPES_SUPPORTED",
+    "OIDC_TOKEN_ENDPOINT_AUTH_METHODS_SUPPORTED",
+)
+
+# List of settings that may be in string import notation.
+IMPORT_STRINGS = (
+    "CLIENT_ID_GENERATOR_CLASS",
+    "CLIENT_SECRET_GENERATOR_CLASS",
+    "ACCESS_TOKEN_GENERATOR",
+    "REFRESH_TOKEN_GENERATOR",
+    "OAUTH2_SERVER_CLASS",
+    "OAUTH2_VALIDATOR_CLASS",
+    "OAUTH2_BACKEND_CLASS",
+    "SCOPES_BACKEND_CLASS",
+    "APPLICATION_ADMIN_CLASS",
+    "ACCESS_TOKEN_ADMIN_CLASS",
+    "GRANT_ADMIN_CLASS",
+    "ID_TOKEN_ADMIN_CLASS",
+    "REFRESH_TOKEN_ADMIN_CLASS",
+)
+
+
+def perform_import(val, setting_name):
+    """
+    If the given setting is a string import notation,
+    then perform the necessary import or imports.
+    """
+    if val is None:
+        return None
+    elif isinstance(val, str):
+        return import_from_string(val, setting_name)
+    elif isinstance(val, (list, tuple)):
+        return [import_from_string(item, setting_name) for item in val]
+    return val
+
+
+def import_from_string(val, setting_name):
+    """
+    Attempt to import a class from a string representation.
+    """
+    try:
+        return import_string(val)
+    except ImportError as e:
+        msg = "Could not import %r for setting %r. %s: %s." % (val, setting_name, e.__class__.__name__, e)
+        raise ImportError(msg)
+
+
+class _PhonyHttpRequest(HttpRequest):
+    _scheme = "http"
+
+    def _get_scheme(self):
+        return self._scheme
+
+
+class OAuth2ProviderSettings:
+    """
+    A settings object, that allows OAuth2 Provider settings to be accessed as properties.
+
+    Any setting with string import paths will be automatically resolved
+    and return the class, rather than the string literal.
+    """
+
+    def __init__(self, user_settings=None, defaults=None, import_strings=None, mandatory=None):
+        self._user_settings = user_settings or {}
+        self.defaults = defaults or DEFAULTS
+        self.import_strings = import_strings or IMPORT_STRINGS
+        self.mandatory = mandatory or ()
+        self._cached_attrs = set()
+
+    @property
+    def user_settings(self):
+        if not hasattr(self, "_user_settings"):
+            self._user_settings = getattr(settings, "OAUTH2_PROVIDER", {})
+        return self._user_settings
+
+    def __getattr__(self, attr):
+        if attr not in self.defaults:
+            raise AttributeError("Invalid OAuth2Provider setting: %s" % attr)
+        try:
+            # Check if present in user settings
+            val = self.user_settings[attr]
+        except KeyError:
+            # Fall back to defaults
+            # Special case OAUTH2_SERVER_CLASS - if not specified, and OIDC is
+            # enabled, use the OIDC_SERVER_CLASS setting instead
+            if attr == "OAUTH2_SERVER_CLASS" and self.OIDC_ENABLED:
+                val = self.defaults["OIDC_SERVER_CLASS"]
+            else:
+                val = self.defaults[attr]
+
+        # Coerce import strings into classes
+        if val and attr in self.import_strings:
+            val = perform_import(val, attr)
+
+        # Overriding special settings
+        if attr == "_SCOPES":
+            val = list(self.SCOPES.keys())
+        if attr == "_DEFAULT_SCOPES":
+            if "__all__" in self.DEFAULT_SCOPES:
+                # If DEFAULT_SCOPES is set to ["__all__"] the whole set of scopes is returned
+                val = list(self._SCOPES)
+            else:
+                # Otherwise we return a subset (that can be void) of SCOPES
+                val = []
+                for scope in self.DEFAULT_SCOPES:
+                    if scope in self._SCOPES:
+                        val.append(scope)
+                    else:
+                        raise ImproperlyConfigured("Defined DEFAULT_SCOPES not present in SCOPES")
+
+        self.validate_setting(attr, val)
+
+        # Cache the result
+        self._cached_attrs.add(attr)
+        setattr(self, attr, val)
+        return val
+
+    def validate_setting(self, attr, val):
+        if not val and attr in self.mandatory:
+            raise AttributeError("OAuth2Provider setting: %s is mandatory" % attr)
+
+    @property
+    def server_kwargs(self):
+        """
+        This is used to communicate settings to oauth server.
+
+        Takes relevant settings and format them accordingly.
+        There's also EXTRA_SERVER_KWARGS that can override every value
+        and is more flexible regarding keys and acceptable values
+        but doesn't have import string magic or any additional
+        processing, callables have to be assigned directly.
+        For the likes of signed_token_generator it means something like
+
+        {"token_generator": signed_token_generator(privkey, **kwargs)}
+        """
+        kwargs = {
+            key: getattr(self, value)
+            for key, value in [
+                ("token_expires_in", "ACCESS_TOKEN_EXPIRE_SECONDS"),
+                ("refresh_token_expires_in", "REFRESH_TOKEN_EXPIRE_SECONDS"),
+                ("token_generator", "ACCESS_TOKEN_GENERATOR"),
+                ("refresh_token_generator", "REFRESH_TOKEN_GENERATOR"),
+            ]
+        }
+        kwargs.update(self.EXTRA_SERVER_KWARGS)
+        return kwargs
+
+    def reload(self):
+        for attr in self._cached_attrs:
+            delattr(self, attr)
+        self._cached_attrs.clear()
+        if hasattr(self, "_user_settings"):
+            delattr(self, "_user_settings")
+
+    def oidc_issuer(self, request):
+        """
+        Helper function to get the OIDC issuer URL, either from the settings
+        or constructing it from the passed request.
+
+        If only an oauthlib request is available, a dummy django request is
+        built from that and used to generate the URL.
+        """
+        if self.OIDC_ISS_ENDPOINT:
+            return self.OIDC_ISS_ENDPOINT
+        if isinstance(request, HttpRequest):
+            django_request = request
+        elif isinstance(request, Request):
+            django_request = _PhonyHttpRequest()
+            django_request.META = request.headers
+            if request.headers.get("X_DJANGO_OAUTH_TOOLKIT_SECURE", False):
+                django_request._scheme = "https"
+        else:
+            raise TypeError("request must be a django or oauthlib request: got %r" % request)
+        abs_url = django_request.build_absolute_uri(reverse("oauth2_provider:oidc-connect-discovery-info"))
+        return abs_url[: -len("/.well-known/openid-configuration")]
+
+
+oauth2_settings = OAuth2ProviderSettings(USER_SETTINGS, DEFAULTS, IMPORT_STRINGS, MANDATORY)
+
+
+def reload_oauth2_settings(*args, **kwargs):
+    setting = kwargs["setting"]
+    if setting == "OAUTH2_PROVIDER":
+        oauth2_settings.reload()
+
+
+setting_changed.connect(reload_oauth2_settings)

venv/lib/python3.11/site-packages/oauth2_provider/signals.py

@@ -0,0 +1,4 @@
+from django.dispatch import Signal
+
+
+app_authorized = Signal()  # providing_args=["request", "token"]

venv/lib/python3.11/site-packages/oauth2_provider/templates/oauth2_provider/application_confirm_delete.html

@@ -0,0 +1,18 @@
+{% extends "oauth2_provider/base.html" %}
+
+{% load i18n %}
+{% block content %}
+    <div class="block-center">
+        <h3 class="block-center-heading">{% trans "Are you sure to delete the application" %} {{ application.name }}?</h3>
+        <form method="post" action="{% url 'oauth2_provider:delete' application.pk %}">
+            {% csrf_token %}
+
+            <div class="control-group">
+                <div class="controls">
+                    <a class="btn btn-large" href="{% url "oauth2_provider:list" %}">{% trans "Cancel" %}</a>
+                    <input type="submit" class="btn btn-large btn-danger" name="allow" value="{% trans 'Delete' %}"/>
+                </div>
+            </div>
+        </form>
+    </div>
+{% endblock content %}

venv/lib/python3.11/site-packages/oauth2_provider/templates/oauth2_provider/application_detail.html

@@ -0,0 +1,56 @@
+{% extends "oauth2_provider/base.html" %}
+
+{% load i18n %}
+{% block content %}
+    <div class="block-center">
+        <h3 class="block-center-heading">{{ application.name }}</h3>
+
+        <ul class="unstyled">
+            <li>
+                <p><b>{% trans "Client id" %}</b></p>
+                <input class="input-block-level" type="text" value="{{ application.client_id }}" readonly>
+            </li>
+
+            <li>
+                <p><b>{% trans "Client secret" %}</b></p>
+                <input class="input-block-level" type="text" value="{{ application.client_secret }}" readonly>
+            </li>
+
+            <li>
+                <p><b>{% trans "Hash client secret" %}</b></p>
+                <p>{{ application.hash_client_secret|yesno:_("yes,no") }}</p>
+            </li>
+
+            <li>
+                <p><b>{% trans "Client type" %}</b></p>
+                <p>{{ application.client_type }}</p>
+            </li>
+
+            <li>
+                <p><b>{% trans "Authorization Grant Type" %}</b></p>
+                <p>{{ application.authorization_grant_type }}</p>
+            </li>
+
+            <li>
+                <p><b>{% trans "Redirect Uris" %}</b></p>
+                <textarea class="input-block-level" readonly>{{ application.redirect_uris }}</textarea>
+            </li>
+
+            <li>
+                <p><b>{% trans "Post Logout Redirect Uris" %}</b></p>
+                <textarea class="input-block-level" readonly>{{ application.post_logout_redirect_uris }}</textarea>
+            </li>
+
+            <li>
+                <p><b>{% trans "Allowed Origins" %}</b></p>
+                <textarea class="input-block-level" readonly>{{ application.allowed_origins }}</textarea>
+            </li>
+        </ul>
+
+        <div class="btn-toolbar">
+            <a class="btn" href="{% url "oauth2_provider:list" %}">{% trans "Go Back" %}</a>
+            <a class="btn btn-primary" href="{% url "oauth2_provider:update" application.pk %}">{% trans "Edit" %}</a>
+            <a class="btn btn-danger" href="{% url "oauth2_provider:delete" application.pk %}">{% trans "Delete" %}</a>
+        </div>
+    </div>
+{% endblock content %}

venv/lib/python3.11/site-packages/oauth2_provider/templates/oauth2_provider/application_form.html

@@ -0,0 +1,42 @@
+{% extends "oauth2_provider/base.html" %}
+
+{% load i18n %}
+{% block content %}
+    <div class="block-center">
+        <form class="form-horizontal" method="post" action="{% block app-form-action-url %}{% url 'oauth2_provider:update' application.pk %}{% endblock app-form-action-url %}">
+            <h3 class="block-center-heading">
+                {% block app-form-title %}
+                    {% trans "Edit application" %} {{ application.name }}
+                {% endblock app-form-title %}
+            </h3>
+            {% csrf_token %}
+
+            {% for field in form %}
+                <div class="control-group {% if field.errors %}error{% endif %}">
+                    <label class="control-label" for="{{ field.id_for_label }}">{{ field.label }}</label>
+                    <div class="controls">
+                        {{ field }}
+                        {% for error in field.errors %}
+                            <span class="help-inline">{{ error }}</span>
+                        {% endfor %}
+                    </div>
+                </div>
+            {% endfor %}
+
+            <div class="control-group {% if form.non_field_errors %}error{% endif %}">
+                {% for error in form.non_field_errors %}
+                    <span class="help-inline">{{ error }}</span>
+                {% endfor %}
+            </div>
+
+            <div class="control-group">
+                <div class="controls">
+                    <a class="btn" href="{% block app-form-back-url %}{% url "oauth2_provider:detail" application.pk %}{% endblock app-form-back-url %}">
+                        {% trans "Go Back" %}
+                    </a>
+                    <button type="submit" class="btn btn-primary">{% trans "Save" %}</button>
+                </div>
+            </div>
+        </form>
+    </div>
+{% endblock %}

venv/lib/python3.11/site-packages/oauth2_provider/templates/oauth2_provider/application_list.html

@@ -0,0 +1,20 @@
+{% extends "oauth2_provider/base.html" %}
+
+{% load i18n %}
+{% block content %}
+    <div class="block-center">
+        <h3 class="block-center-heading">{% trans "Your applications" %}</h3>
+        {% if applications %}
+            <ul>
+                {% for application in applications %}
+                    <li><a href="{% url "oauth2_provider:detail" application.pk %}">{{ application.name }}</a></li>
+                {% endfor %}
+            </ul>
+
+            <a class="btn btn-success" href="{% url "oauth2_provider:register" %}">{% trans "New Application" %}</a>
+        {% else %}
+
+            <p>{% trans "No applications defined" %}. <a href="{% url 'oauth2_provider:register' %}">{% trans "Click here" %}</a> {% trans "if you want to register a new one" %}</p>
+        {% endif %}
+    </div>
+{% endblock content %}

venv/lib/python3.11/site-packages/oauth2_provider/templates/oauth2_provider/application_registration_form.html

@@ -0,0 +1,9 @@
+{% extends "oauth2_provider/application_form.html" %}
+
+{% load i18n %}
+
+{% block app-form-title %}{% trans "Register a new application" %}{% endblock app-form-title %}
+
+{% block app-form-action-url %}{% url 'oauth2_provider:register' %}{% endblock app-form-action-url %}
+
+{% block app-form-back-url %}{% url "oauth2_provider:list" %}"{% endblock app-form-back-url %}

venv/lib/python3.11/site-packages/oauth2_provider/templates/oauth2_provider/authorize.html

@@ -0,0 +1,40 @@
+{% extends "oauth2_provider/base.html" %}
+
+{% load i18n %}
+{% block content %}
+    <div class="block-center">
+        {% if not error %}
+            <form id="authorizationForm" method="post">
+                <h3 class="block-center-heading">{% trans "Authorize" %} {{ application.name }}?</h3>
+                {% csrf_token %}
+
+                {% for field in form %}
+                    {% if field.is_hidden %}
+                        {{ field }}
+                    {% endif %}
+                {% endfor %}
+
+                <p>{% trans "Application requires the following permissions" %}</p>
+                <ul>
+                    {% for scope in scopes_descriptions %}
+                        <li>{{ scope }}</li>
+                    {% endfor %}
+                </ul>
+
+                {{ form.errors }}
+                {{ form.non_field_errors }}
+
+                <div class="control-group">
+                    <div class="controls">
+                        <input type="submit" class="btn btn-large" value="{% trans 'Cancel' %}"/>
+                        <input type="submit" class="btn btn-large btn-primary" name="allow" value="{% trans 'Authorize' %}"/>
+                    </div>
+                </div>
+            </form>
+
+        {% else %}
+            <h2>Error: {{ error.error }}</h2>
+            <p>{{ error.description }}</p>
+        {% endif %}
+    </div>
+{% endblock %}

venv/lib/python3.11/site-packages/oauth2_provider/templates/oauth2_provider/authorized-token-delete.html

@@ -0,0 +1,9 @@
+{% extends "oauth2_provider/base.html" %}
+
+{% load i18n %}
+{% block content %}
+    <form action="" method="post">{% csrf_token %}
+        <p>{% trans "Are you sure you want to delete this token?" %}</p>
+        <input type="submit" value="{% trans 'Delete' %}" />
+    </form>
+{% endblock %}

venv/lib/python3.11/site-packages/oauth2_provider/templates/oauth2_provider/authorized-tokens.html

@@ -0,0 +1,23 @@
+{% extends "oauth2_provider/base.html" %}
+
+{% load i18n %}
+{% block content %}
+    <div class="block-center">
+    <h1>{% trans "Tokens" %}</h1>
+        <ul>
+        {% for authorized_token in authorized_tokens %}
+            <li>
+                {{ authorized_token.application }}
+                (<a href="{% url 'oauth2_provider:authorized-token-delete' authorized_token.pk %}">{% trans "revoke" %}</a>)
+            </li>
+            <ul>
+            {% for scope_name, scope_description in authorized_token.scopes.items %}
+                <li>{{ scope_name }}: {{ scope_description }}</li>
+            {% endfor %}
+            </ul>
+        {% empty %}
+            <li>{% trans "There are no authorized tokens yet." %}</li>
+        {% endfor %}
+        </ul>
+    </div>
+{% endblock %}

venv/lib/python3.11/site-packages/oauth2_provider/templates/oauth2_provider/base.html

@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <title>{% block title %}{% endblock title %}</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="description" content="">
+    <meta name="author" content="">
+
+    {% block css %}
+        <link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.no-icons.min.css" rel="stylesheet">
+    {% endblock css %}
+
+    <style>
+        body {
+            padding-top: 40px;
+            padding-bottom: 40px;
+            background-color: #f5f5f5;
+        }
+        .block-center {
+            max-width: 500px;
+            padding: 19px 29px 29px;
+            margin: 0 auto 20px;
+            background-color: #fff;
+            border: 1px solid #e5e5e5;
+            -webkit-border-radius: 5px;
+            -moz-border-radius: 5px;
+            border-radius: 5px;
+            -webkit-box-shadow: 0 1px 2px rgba(0,0,0,.05);
+            -moz-box-shadow: 0 1px 2px rgba(0,0,0,.05);
+            box-shadow: 0 1px 2px rgba(0,0,0,.05);
+        }
+        .block-center .block-center-heading {
+            margin-bottom: 10px;
+        }
+
+    </style>
+</head>
+
+<body>
+
+<div class="container">
+    {% block content %}
+    {% endblock content %}
+</div>
+
+</body>
+</html>

venv/lib/python3.11/site-packages/oauth2_provider/templates/oauth2_provider/logout_confirm.html

@@ -0,0 +1,37 @@
+{% extends "oauth2_provider/base.html" %}
+
+{% load i18n %}
+{% block content %}
+    <div class="block-center">
+        {% if not error %}
+            <form id="authorizationForm" method="post">
+                {% if application %}
+                    <h3 class="block-center-heading">Confirm Logout requested by {{ application.name }}</h3>
+                {% else %}
+                    <h3 class="block-center-heading">Confirm Logout</h3>
+                {% endif %}
+                {% csrf_token %}
+
+                {% for field in form %}
+                    {% if field.is_hidden %}
+                        {{ field }}
+                    {% endif %}
+                {% endfor %}
+
+                {{ form.errors }}
+                {{ form.non_field_errors }}
+
+                <div class="control-group">
+                    <div class="controls">
+                        <input type="submit" class="btn btn-large" value="Cancel"/>
+                        <input type="submit" class="btn btn-large btn-primary" name="allow" value="Logout"/>
+                    </div>
+                </div>
+            </form>
+
+        {% else %}
+            <h2>Error: {{ error.error }}</h2>
+            <p>{{ error.description }}</p>
+        {% endif %}
+    </div>
+{% endblock %}

venv/lib/python3.11/site-packages/oauth2_provider/urls.py

@@ -0,0 +1,49 @@
+from django.urls import path, re_path
+
+from . import views
+
+
+app_name = "oauth2_provider"
+
+
+base_urlpatterns = [
+    path("authorize/", views.AuthorizationView.as_view(), name="authorize"),
+    path("token/", views.TokenView.as_view(), name="token"),
+    path("revoke_token/", views.RevokeTokenView.as_view(), name="revoke-token"),
+    path("introspect/", views.IntrospectTokenView.as_view(), name="introspect"),
+]
+
+
+management_urlpatterns = [
+    # Application management views
+    path("applications/", views.ApplicationList.as_view(), name="list"),
+    path("applications/register/", views.ApplicationRegistration.as_view(), name="register"),
+    path("applications/<slug:pk>/", views.ApplicationDetail.as_view(), name="detail"),
+    path("applications/<slug:pk>/delete/", views.ApplicationDelete.as_view(), name="delete"),
+    path("applications/<slug:pk>/update/", views.ApplicationUpdate.as_view(), name="update"),
+    # Token management views
+    path("authorized_tokens/", views.AuthorizedTokensListView.as_view(), name="authorized-token-list"),
+    path(
+        "authorized_tokens/<slug:pk>/delete/",
+        views.AuthorizedTokenDeleteView.as_view(),
+        name="authorized-token-delete",
+    ),
+]
+
+oidc_urlpatterns = [
+    # .well-known/openid-configuration/ is deprecated
+    # https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderConfig
+    # does not specify a trailing slash
+    # Support for trailing slash shall be removed in a future release.
+    re_path(
+        r"^\.well-known/openid-configuration/?$",
+        views.ConnectDiscoveryInfoView.as_view(),
+        name="oidc-connect-discovery-info",
+    ),
+    path(".well-known/jwks.json", views.JwksInfoView.as_view(), name="jwks-info"),
+    path("userinfo/", views.UserInfoView.as_view(), name="user-info"),
+    path("logout/", views.RPInitiatedLogoutView.as_view(), name="rp-initiated-logout"),
+]
+
+
+urlpatterns = base_urlpatterns + management_urlpatterns + oidc_urlpatterns

venv/lib/python3.11/site-packages/oauth2_provider/utils.py

@@ -0,0 +1,34 @@
+import functools
+
+from django.conf import settings
+from jwcrypto import jwk
+
+
+@functools.lru_cache()
+def jwk_from_pem(pem_string):
+    """
+    A cached version of jwcrypto.JWK.from_pem.
+    Converting from PEM is expensive for large keys such as those using RSA.
+    """
+    return jwk.JWK.from_pem(pem_string.encode("utf-8"))
+
+
+# @functools.lru_cache
+def get_timezone(time_zone):
+    """
+    Return the default time zone as a tzinfo instance.
+
+    This is the time zone defined by settings.TIME_ZONE.
+    """
+    try:
+        import zoneinfo
+    except ImportError:
+        import pytz
+
+        return pytz.timezone(time_zone)
+    else:
+        if getattr(settings, "USE_DEPRECATED_PYTZ", False):
+            import pytz
+
+            return pytz.timezone(time_zone)
+        return zoneinfo.ZoneInfo(time_zone)

venv/lib/python3.11/site-packages/oauth2_provider/validators.py

@@ -0,0 +1,77 @@
+import re
+from urllib.parse import urlsplit
+
+from django.core.exceptions import ValidationError
+from django.core.validators import URLValidator
+from django.utils.encoding import force_str
+
+
+class URIValidator(URLValidator):
+    scheme_re = r"^(?:[a-z][a-z0-9\.\-\+]*)://"
+
+    dotless_domain_re = r"(?!-)[A-Z\d-]{1,63}(?<!-)"
+    host_re = "|".join(
+        (r"(?:" + URLValidator.host_re, URLValidator.ipv4_re, URLValidator.ipv6_re, dotless_domain_re + ")")
+    )
+    port_re = r"(?::\d{2,5})?"
+    path_re = r"(?:[/?#][^\s]*)?"
+    regex = re.compile(scheme_re + host_re + port_re + path_re, re.IGNORECASE)
+
+
+class AllowedURIValidator(URIValidator):
+    # TODO: find a way to get these associated with their form fields in place of passing name
+    # TODO: submit PR to get `cause` included in the parent class ValidationError params`
+    def __init__(self, schemes, name, allow_path=False, allow_query=False, allow_fragments=False):
+        """
+        :param schemes: List of allowed schemes. E.g.: ["https"]
+        :param name: Name of the validated URI. It is required for validation message. E.g.: "Origin"
+        :param allow_path: If URI can contain path part
+        :param allow_query: If URI can contain query part
+        :param allow_fragments: If URI can contain fragments part
+        """
+        super().__init__(schemes=schemes)
+        self.name = name
+        self.allow_path = allow_path
+        self.allow_query = allow_query
+        self.allow_fragments = allow_fragments
+
+    def __call__(self, value):
+        value = force_str(value)
+        try:
+            scheme, netloc, path, query, fragment = urlsplit(value)
+        except ValueError as e:
+            raise ValidationError(
+                "%(name)s URI validation error. %(cause)s: %(value)s",
+                params={"name": self.name, "value": value, "cause": e},
+            )
+
+        # send better validation errors
+        if scheme not in self.schemes:
+            raise ValidationError(
+                "%(name)s URI Validation error. %(cause)s: %(value)s",
+                params={"name": self.name, "value": value, "cause": "invalid_scheme"},
+            )
+
+        if query and not self.allow_query:
+            raise ValidationError(
+                "%(name)s URI validation error. %(cause)s: %(value)s",
+                params={"name": self.name, "value": value, "cause": "query string not allowed"},
+            )
+        if fragment and not self.allow_fragments:
+            raise ValidationError(
+                "%(name)s URI validation error. %(cause)s: %(value)s",
+                params={"name": self.name, "value": value, "cause": "fragment not allowed"},
+            )
+        if path and not self.allow_path:
+            raise ValidationError(
+                "%(name)s URI validation error. %(cause)s: %(value)s",
+                params={"name": self.name, "value": value, "cause": "path not allowed"},
+            )
+
+        try:
+            super().__call__(value)
+        except ValidationError as e:
+            raise ValidationError(
+                "%(name)s URI validation error. %(cause)s: %(value)s",
+                params={"name": self.name, "value": value, "cause": e},
+            )

venv/lib/python3.11/site-packages/oauth2_provider/views/__init__.py

@@ -0,0 +1,19 @@
+# flake8: noqa
+from .base import AuthorizationView, TokenView, RevokeTokenView  # isort:skip
+from .application import (
+    ApplicationDelete,
+    ApplicationDetail,
+    ApplicationList,
+    ApplicationRegistration,
+    ApplicationUpdate,
+)
+from .generic import (
+    ClientProtectedResourceView,
+    ClientProtectedScopedResourceView,
+    ProtectedResourceView,
+    ReadWriteScopedResourceView,
+    ScopedProtectedResourceView,
+)
+from .introspect import IntrospectTokenView
+from .oidc import ConnectDiscoveryInfoView, JwksInfoView, RPInitiatedLogoutView, UserInfoView
+from .token import AuthorizedTokenDeleteView, AuthorizedTokensListView