From 11a477f92e043b4d3490c19d11aec8d12ce334c9 Mon Sep 17 00:00:00 2001
From: Andri Yngvason <andri@yngvason.is>
Date: Sun, 19 Nov 2023 21:17:15 +0000
Subject: [PATCH] main: Only one client is allowed to resize

---
 src/main.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/main.c b/src/main.c
index 367dd00..878af9c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -74,6 +74,8 @@
 
 #define MAYBE_UNUSED __attribute__((unused))
 
+struct wayvnc_client;
+
 enum socket_type {
 	SOCKET_TYPE_TCP = 0,
 	SOCKET_TYPE_UNIX,
@@ -123,6 +125,8 @@ struct wayvnc {
 	bool is_initializing;
 
 	bool start_detached;
+
+	struct wayvnc_client* master_layout_client;
 };
 
 struct wayvnc_client {
@@ -762,6 +766,7 @@ static bool on_client_resize(struct nvnc_client* nvnc_client,
 		const struct nvnc_desktop_layout* layout)
 {
 	struct wayvnc_client* client = nvnc_get_userdata(nvnc_client);
+	struct wayvnc* self = client->server;
 
 	uint16_t width = nvnc_desktop_layout_get_width(layout);
 	uint16_t height = nvnc_desktop_layout_get_height(layout);
@@ -770,6 +775,11 @@ static bool on_client_resize(struct nvnc_client* nvnc_client,
 	if (output == NULL)
 		return false;
 
+	if (self->master_layout_client && self->master_layout_client != client)
+		return false;
+
+	self->master_layout_client = client;
+
 	nvnc_log(NVNC_LOG_DEBUG,
 		"Client resolution changed: %ux%u, capturing output %s which is headless: %s",
 		width, height, output->name,
@@ -1246,6 +1256,9 @@ static void client_destroy(void* obj)
 	struct nvnc* nvnc = nvnc_client_get_server(self->nvnc_client);
 	struct wayvnc* wayvnc = nvnc_get_userdata(nvnc);
 
+	if (self == wayvnc->master_layout_client)
+		wayvnc->master_layout_client = NULL;
+
 	if (self->transient_seat)
 		ext_transient_seat_v1_destroy(self->transient_seat);