flow: pass Query on FlowExecutorSolve to prevent redirect issues

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/flows/views.py

@@ -157,6 +157,15 @@ class FlowExecutorView(APIView):
     @swagger_auto_schema(
         responses={200: Challenge()},
         request_body=ChallengeResponse(),
+        manual_parameters=[
+            openapi.Parameter(
+                "query",
+                openapi.IN_QUERY,
+                required=True,
+                description="Querystring as received",
+                type=openapi.TYPE_STRING,
+            )
+        ],
         operation_id="flows_executor_solve",
     )
     def post(self, request: HttpRequest, *args, **kwargs) -> HttpResponse:

swagger.yaml

@@ -2768,6 +2768,11 @@ paths:
           required: true
           schema:
             $ref: '#/definitions/ChallengeResponse'
+        - name: query
+          in: query
+          description: Querystring as received
+          required: true
+          type: string
       responses:
         '200':
           description: Challenge that gets sent to the client based on which stage

web/src/flows/FlowExecutor.ts

@@ -108,6 +108,7 @@ export class FlowExecutor extends LitElement implements StageHost {
         return new FlowsApi(DEFAULT_CONFIG).flowsExecutorSolveRaw({
             flowSlug: this.flowSlug,
             data: formData || {},
+            query: window.location.search.substring(1),
         }).then((challengeRaw) => {
             return challengeRaw.raw.json();
         }).then((data) => {