Add dummy DeleteBucketCors for safety (#20253)

cmd/api-router.go

@@ -460,6 +460,10 @@ func registerAPIRouter(router *mux.Router) {
 		router.Methods(http.MethodPut).
 			HandlerFunc(s3APIMiddleware(api.PutBucketCorsHandler)).
 			Queries("cors", "")
+		// DeleteBucketCors - this is a dummy call.
+		router.Methods(http.MethodDelete).
+			HandlerFunc(s3APIMiddleware(api.DeleteBucketCorsHandler)).
+			Queries("cors", "")
 		// GetBucketWebsiteHandler - this is a dummy call.
 		router.Methods(http.MethodGet).
 			HandlerFunc(s3APIMiddleware(api.GetBucketWebsiteHandler)).

cmd/dummy-handlers.go

@@ -225,3 +225,33 @@ func (api objectAPIHandlers) PutBucketCorsHandler(w http.ResponseWriter, r *http
 
 	writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
 }
+
+// DeleteBucketCorsHandler - DELETE bucket cors, a dummy api
+func (api objectAPIHandlers) DeleteBucketCorsHandler(w http.ResponseWriter, r *http.Request) {
+	ctx := newContext(r, w, "DeleteBucketCors")
+
+	defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
+
+	vars := mux.Vars(r)
+	bucket := vars["bucket"]
+
+	objAPI := api.ObjectAPI()
+	if objAPI == nil {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
+		return
+	}
+
+	if s3Error := checkRequestAuthType(ctx, r, policy.DeleteBucketCorsAction, bucket, ""); s3Error != ErrNone {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
+		return
+	}
+
+	// Validate if bucket exists, before proceeding further...
+	_, err := objAPI.GetBucketInfo(ctx, bucket, BucketOptions{})
+	if err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
+		return
+	}
+
+	writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
+}