when copying socket path, check that we didnt truncate it which would cause

the following connect() to fail.

diff --git a/usr.sbin/smtpd/delivery_lmtp.c b/usr.sbin/smtpd/delivery_lmtp.c
index b40dbc0..8fb4787 100644 (file)
--- a/usr.sbin/smtpd/delivery_lmtp.c
+++ b/usr.sbin/smtpd/delivery_lmtp.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: delivery_lmtp.c,v 1.4 2013/12/26 17:25:32 eric Exp $ */
+/* $OpenBSD: delivery_lmtp.c,v 1.5 2014/04/19 11:29:06 gilles Exp $ */
 
 /*
  * Copyright (c) 2013 Ashish SHUKLA <ashish.is@lostca.se>
@@ -116,7 +116,12 @@ unix_socket(char *path) {
         }
 
         addr.sun_family = AF_UNIX;
-        strlcpy(addr.sun_path, path, sizeof(addr.sun_path));
+        if (strlcpy(addr.sun_path, path, sizeof(addr.sun_path))
+            >= sizeof(addr.sun_path)) {
+                warnx("strlcpy: socket path too long");
+                close(s);
+                return -1;
+        }
 
         if (connect(s, (struct sockaddr*) &addr, sizeof(addr)) == -1) {
                 warn("connect");