From 405ecc29cc25152408f2abdc703de11d0c2ecfc7 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Fri, 21 Feb 2025 17:20:00 -0500
Subject: server: listener: Prevent integer underflow

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 lib/libostp/server.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/libostp/server.c b/lib/libostp/server.c
index 5fa7045..794eda0 100644
--- a/lib/libostp/server.c
+++ b/lib/libostp/server.c
@@ -266,6 +266,10 @@ listener_cleanup(struct ostp_listener *lp)
 void
 listener_close(struct ostp_listener *lp, struct ostp_client *c)
 {
+    if (lp->client_count == 0) {
+        return;
+    }
+
     close(c->sockfd);
     c->sockfd = -1;
     memset(&c->session, 0, sizeof(c->session));
-- 
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