From 6d4d4502e9188a07751b71b0bde7448e3e9eeef4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Mon, 20 Jun 2022 20:57:26 +0200
Subject: [PATCH] selection: reject dnd offers with unsupported mime-types

We were already doing this, implicitly, *if* the offer was for the
main grid.

This patch makes it more clear that we do not accept the offer.
---
 selection.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/selection.c b/selection.c
index 63170b98..c62bdb2b 100644
--- a/selection.c
+++ b/selection.c
@@ -2322,6 +2322,9 @@ enter(void *data, struct wl_data_device *wl_data_device, uint32_t serial,
 
     xassert(offer == seat->clipboard.data_offer);
 
+    if (seat->clipboard.mime_type == DATA_OFFER_MIME_UNSET)
+        goto reject_offer;
+
     /* Remember _which_ terminal the current DnD offer is targeting */
     xassert(seat->clipboard.window == NULL);
     tll_foreach(wayl->terms, it) {
@@ -2340,6 +2343,7 @@ enter(void *data, struct wl_data_device *wl_data_device, uint32_t serial,
         }
     }
 
+reject_offer:
     /* Either terminal is already busy sending paste data, or mouse
      * pointer isn’t over the grid */
     seat->clipboard.window = NULL;