commit c9e878d6a40f4b509bb8928e4736a63f8b7723a2
from: Omar Polo <op@omarpolo.com>
date: Mon Jun 26 10:17:43 2023 UTC

use snprintf() instead of chain of strlcpy/cat

commit - ed164e7221f75d3d7f48351e9427f2ce53ab284a
commit + c9e878d6a40f4b509bb8928e4736a63f8b7723a2
blob - 09b26450753fa543bb800936d24f0430f8ff8055
blob + 0eebe46f41081f6afb9a60cea7a12493a1995e80
--- server.c
+++ server.c
@@ -907,13 +907,10 @@ open_dir(struct client *c)
 static void
 redirect_canonical_dir(struct client *c)
 {
-	size_t len;
-
-	strlcpy(c->sbuf, "/", sizeof(c->sbuf));
-	strlcat(c->sbuf, c->iri.path, sizeof(c->sbuf));
-	len = strlcat(c->sbuf, "/", sizeof(c->sbuf));
+	int r;
 
-	if (len >= sizeof(c->sbuf)) {
+	r = snprintf(c->sbuf, sizeof(c->sbuf), "/%s/", c->iri.path);
+	if (r < 0 || (size_t)r >= sizeof(c->sbuf)) {
 		start_reply(c, TEMP_FAILURE, "internal server error");
 		return;
 	}