From f1426be34cb4872d054570a8f42d0e263239bc40 Mon Sep 17 00:00:00 2001
From: Jens Langhammer <jens.langhammer@beryju.org>
Date: Mon, 6 Jun 2022 23:09:35 +0200
Subject: [PATCH] include root URL in API

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>
---
 authentik/sources/scim/api.py           | 18 +++++++++++++++++-
 authentik/sources/scim/urls.py          |  6 ++++++
 authentik/sources/scim/views/v2/base.py |  9 +++++++++
 3 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/authentik/sources/scim/api.py b/authentik/sources/scim/api.py
index 94edc6213..4a867fd84 100644
--- a/authentik/sources/scim/api.py
+++ b/authentik/sources/scim/api.py
@@ -1,7 +1,10 @@
 """SCIMSource API Views"""
+from django.urls import reverse_lazy
+from rest_framework.fields import SerializerMethodField
 from rest_framework.viewsets import ModelViewSet
 
 from authentik.core.api.sources import SourceSerializer
+from authentik.core.api.tokens import TokenSerializer
 from authentik.core.api.used_by import UsedByMixin
 from authentik.core.models import USER_ATTRIBUTE_SA, Token, TokenIntents, User
 from authentik.sources.scim.models import SCIMSource
@@ -10,6 +13,19 @@ from authentik.sources.scim.models import SCIMSource
 class SCIMSourceSerializer(SourceSerializer):
     """SCIMSource Serializer"""
 
+    root_url = SerializerMethodField()
+    token_obj = TokenSerializer(source="token", required=False, read_only=True)
+
+    def get_root_url(self, instance: SCIMSource) -> str:
+        """Get Root URL"""
+        relative_url = reverse_lazy(
+            "authentik_sources_scim:v2-root",
+            kwargs={"source_slug": instance.slug},
+        )
+        if "request" not in self.context:
+            return relative_url
+        return self.context["request"].build_absolute_uri(relative_url)
+
     def create(self, validated_data):
         instance: SCIMSource = super().create(validated_data)
         identifier = f"ak-source-scim-{instance.pk}"
@@ -32,7 +48,7 @@ class SCIMSourceSerializer(SourceSerializer):
     class Meta:
 
         model = SCIMSource
-        fields = SourceSerializer.Meta.fields + ["token"]
+        fields = SourceSerializer.Meta.fields + ["token", "root_url", "token_obj"]
 
 
 class SCIMSourceViewSet(UsedByMixin, ModelViewSet):
diff --git a/authentik/sources/scim/urls.py b/authentik/sources/scim/urls.py
index 0ca409ee6..380503d64 100644
--- a/authentik/sources/scim/urls.py
+++ b/authentik/sources/scim/urls.py
@@ -2,6 +2,7 @@
 from django.urls import path
 
 from authentik.sources.scim.views.v2 import (
+    base,
     groups,
     resource_types,
     schemas,
@@ -10,6 +11,11 @@ from authentik.sources.scim.views.v2 import (
 )
 
 urlpatterns = [
+    path(
+        "<slug:source_slug>/v2",
+        base.SCIMRootView.as_view(),
+        name="v2-root",
+    ),
     path(
         "<slug:source_slug>/v2/Users",
         users.UsersView.as_view(),
diff --git a/authentik/sources/scim/views/v2/base.py b/authentik/sources/scim/views/v2/base.py
index e9527f08a..c35d9fa56 100644
--- a/authentik/sources/scim/views/v2/base.py
+++ b/authentik/sources/scim/views/v2/base.py
@@ -2,6 +2,8 @@
 from rest_framework.parsers import JSONParser
 from rest_framework.permissions import IsAuthenticated
 from rest_framework.renderers import JSONRenderer
+from rest_framework.request import Request
+from rest_framework.response import Response
 from rest_framework.views import APIView
 
 from authentik.sources.scim.views.v2.auth import SCIMTokenAuth
@@ -28,3 +30,10 @@ class SCIMView(APIView):
     permission_classes = [IsAuthenticated]
     parser_classes = [SCIMParser]
     renderer_classes = [SCIMRenderer]
+
+
+class SCIMRootView(SCIMView):
+    """Root SCIM View"""
+
+    def dispatch(self, request: Request, *args, **kwargs) -> Response:
+        return Response({"message": "Use this base-URL with an SCIM-compatible system."})