From b7dca0ed16dda407f10a9d88fe86b9184ff4522b Mon Sep 17 00:00:00 2001
From: Nick Couchman <vnick@apache.org>
Date: Sun, 11 Nov 2018 15:16:22 -0500
Subject: [PATCH] GUACAMOLE-547: Add support for SSH NONE authentication
 method.

---
 src/common-ssh/ssh.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/common-ssh/ssh.c b/src/common-ssh/ssh.c
index 9dde5111..2763840e 100644
--- a/src/common-ssh/ssh.c
+++ b/src/common-ssh/ssh.c
@@ -321,6 +321,10 @@ static int guac_common_ssh_authenticate(guac_common_ssh_session* common_session)
     guac_client_log(client, GUAC_LOG_DEBUG,
             "Supported authentication methods: %s", user_authlist);
 
+    /* If auth list is NULL, then authentication has succeeded with NONE */
+    if (user_authlist == NULL)
+        return 0;
+
     /* Authenticate with private key, if provided */
     if (key != NULL) {