From: Guus Sliepen <guus@tinc-vpn.org>
Date: Sun, 27 Mar 2022 18:56:48 +0000 (+0200)
Subject: Fix compiler warning.
X-Git-Url: http://tinc-vpn.org/git/browse?p=tinc;a=commitdiff_plain;h=b13e1a3c1f7252cda5ab95166d9f2d578983471f

Fix compiler warning.

Quash a compiler warning by checking the result of snprintf() and
handling truncation.
---

diff --git a/src/tincctl.c b/src/tincctl.c
index a3978bcc..0e7d083f 100644
--- a/src/tincctl.c
+++ b/src/tincctl.c
@@ -1894,7 +1894,11 @@ static int cmd_config(int argc, char *argv[]) {
 	char filename[PATH_MAX];
 
 	if(node) {
-		snprintf(filename, sizeof(filename), "%s" SLASH "%s", hosts_dir, node);
+		if((size_t)snprintf(filename, sizeof(filename), "%s" SLASH "%s", hosts_dir, node) >= sizeof(filename)) {
+			fprintf(stderr, "Filename too long: %s" SLASH "%s\n", hosts_dir, node);
+			free(node);
+			return 1;
+		}
 
 		if(node != line) {
 			free(node);