enh: block api user with model filter

backend/apps/ollama/main.py

@@ -737,6 +737,14 @@ async def generate_chat_completion(
         del payload["metadata"]
 
     model_id = form_data.model
+
+    if app.state.config.ENABLE_MODEL_FILTER:
+        if user.role == "user" and model_id not in app.state.config.MODEL_FILTER_LIST:
+            raise HTTPException(
+                status_code=403,
+                detail="Model not found",
+            )
+
     model_info = Models.get_model_by_id(model_id)
 
     if model_info:
@@ -797,6 +805,14 @@ async def generate_openai_chat_completion(
         del payload["metadata"]
 
     model_id = completion_form.model
+
+    if app.state.config.ENABLE_MODEL_FILTER:
+        if user.role == "user" and model_id not in app.state.config.MODEL_FILTER_LIST:
+            raise HTTPException(
+                status_code=403,
+                detail="Model not found",
+            )
+
     model_info = Models.get_model_by_id(model_id)
 
     if model_info: