From a14e29d81ddacc7985d024dd24728641558fc92e Mon Sep 17 00:00:00 2001
From: Damien Miller <djm@cvs.openbsd.org>
Date: Fri, 30 Nov 2018 02:24:53 +0000
Subject: don't attempt to connect to empty SSH_AUTH_SOCK; bz#293

---
 usr.bin/ssh/authfd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'usr.bin/ssh/authfd.c')

diff --git a/usr.bin/ssh/authfd.c b/usr.bin/ssh/authfd.c
index 1c3632361d2..4a7f65eaf3d 100644
--- a/usr.bin/ssh/authfd.c
+++ b/usr.bin/ssh/authfd.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: authfd.c,v 1.111 2018/07/09 21:59:10 markus Exp $ */
+/* $OpenBSD: authfd.c,v 1.112 2018/11/30 02:24:52 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -92,7 +92,7 @@ ssh_get_authentication_socket(int *fdp)
 		*fdp = -1;
 
 	authsocket = getenv(SSH_AUTHSOCKET_ENV_NAME);
-	if (!authsocket)
+	if (authsocket == NULL || *authsocket == '\0')
 		return SSH_ERR_AGENT_NOT_PRESENT;
 
 	memset(&sunaddr, 0, sizeof(sunaddr));
-- 
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