From 9436897bfb8b5f72109667d86aed06d9a9d1a693 Mon Sep 17 00:00:00 2001
From: Nakidai <nakidai@disroot.org>
Date: Mon, 12 Jan 2026 16:50:11 +0300
Subject: Implement 443

---
 handle.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'handle.c')

diff --git a/handle.c b/handle.c
index 9d705e0..2a6fe1c 100644
--- a/handle.c
+++ b/handle.c
@@ -99,9 +99,19 @@ mode(struct Message *msg, struct Peer *peer)
 static int
 nick(struct Message *msg, struct Peer *peer)
 {
+	size_t i;
+
 	ensure(msg->params[0] && msg->params[0], reply(peer, 431), 0);
 	ensure(!(peer->modes & RESTRICTED), reply(peer, 484), 0);
 
+	for (i = 0; i < peers_c; ++i)
+		if (peers[i].fd != peer->fd)
+			ensure(
+				!strcmp(peers[i].nick, peer->nick),
+				reply(peer, 433, msg->params[0]),
+				0
+			);
+
 	user_reg(peer, msg->params[0], NULL, NULL, NULL);
 
 	return 0;
-- 
cgit 1.4.1