From 624d1371304a5ae4b3429ad5e4267aac7cd03dfd Mon Sep 17 00:00:00 2001
From: Berke Güzel <wenekar1@gmail.com>
Date: Mon, 12 Oct 2026 00:09:38 +0300
Subject: missing impls and hardening

---
 src/wayland/clipboard.c | 32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

(limited to 'src/wayland/clipboard.c')

diff --git a/src/wayland/clipboard.c b/src/wayland/clipboard.c
index 0e6ce33..7df1a70 100644
--- a/src/wayland/clipboard.c
+++ b/src/wayland/clipboard.c
@@ -134,10 +134,8 @@ static int transfer_io(int fd, short events, void *ud)
             memcpy(t->text + t->len, buf, (size_t)n);
             t->len += n;
         } else if (n == 0) {
-            if (t->len) {
-                t->owner->receive(t->text, t->len, t->uri_list,
-                                  t->drop_surface, t->owner->ud);
-            }
+            t->owner->receive(t->text ? t->text : "", t->len, t->uri_list,
+                              t->drop_surface, t->owner->ud);
             transfer_end(t, true);
         } else if (errno != EAGAIN && errno != EINTR) transfer_destroy(t);
     }
@@ -556,24 +554,22 @@ void clipboard_copy(struct clipboard *c, const char *text, uint32_t serial)
     wl_data_device_set_selection(c->device, c->source, serial);
 }
 
-void clipboard_paste(struct clipboard *c)
+void clipboard_paste(struct clipboard *c, struct wl_surface *target)
 {
     if (!c || !c->device || !c->selection || !c->selection->mime) return;
     int fds[2];
     if (pipe2(fds, O_CLOEXEC) < 0) return;
     wl_data_offer_receive(c->selection->proxy, c->selection->mime, fds[1]);
     close(fds[1]);
-    start_transfer(c, fds[0], false, false);
+    struct transfer *t = start_transfer(c, fds[0], false, false);
+    if (t) t->drop_surface = target;
     wl_display_flush(c->display);
 }
 
 void clipboard_copy_primary(struct clipboard *c, const char *text, uint32_t serial)
 {
     if (!c || !text || !serial) return;
-    if (!c->primary_device || !c->primary_manager) {
-        clipboard_copy(c, text, serial);
-        return;
-    }
+    if (!c->primary_device || !c->primary_manager) return;
     char *copy = strdup(text);
     if (!copy) return;
     if (c->primary_source) zwp_primary_selection_source_v1_destroy(c->primary_source);
@@ -589,7 +585,7 @@ void clipboard_copy_primary(struct clipboard *c, const char *text, uint32_t seri
     zwp_primary_selection_device_v1_set_selection(c->primary_device, c->primary_source, serial);
 }
 
-void clipboard_paste_primary(struct clipboard *c)
+void clipboard_paste_primary(struct clipboard *c, struct wl_surface *target)
 {
     if (!c) return;
     if (c->primary_device && c->primary_selection && c->primary_selection->mime) {
@@ -598,11 +594,21 @@ void clipboard_paste_primary(struct clipboard *c)
         zwp_primary_selection_offer_v1_receive(c->primary_selection->proxy,
                                                c->primary_selection->mime, fds[1]);
         close(fds[1]);
-        start_transfer(c, fds[0], false, false);
+        struct transfer *t = start_transfer(c, fds[0], false, false);
+        if (t) t->drop_surface = target;
         wl_display_flush(c->display);
         return;
     }
-    clipboard_paste(c);
+}
+
+void clipboard_forget_surface(struct clipboard *c, struct wl_surface *surface)
+{
+    if (!c || !surface) return;
+    for (struct transfer *t = c->transfers, *next; t; t = next) {
+        next = t->next;
+        if (t->drop_surface == surface) transfer_destroy(t);
+    }
+    if (c->drag_surface == surface) c->drag_surface = NULL;
 }
 
 void clipboard_destroy(struct clipboard *c)
-- 
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