From 0ad34a6193357d286042322ea7347262a6fb0778 Mon Sep 17 00:00:00 2001
From: "djm@openbsd.org" <djm@openbsd.org>
Date: Tue, 26 Nov 2024 22:02:28 +0000
Subject: upstream: regression test for UpdateHostkeys with multiple keys
 backed

by ssh-agent. Patch from Maxime Rey.

OpenBSD-Regress-ID: 1777ab6e639e57c0e20cbcb6df60455b49fd8bb3
---
 regress/hostkey-agent.sh | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/regress/hostkey-agent.sh b/regress/hostkey-agent.sh
index 222d424bd..384865857 100644
--- a/regress/hostkey-agent.sh
+++ b/regress/hostkey-agent.sh
@@ -1,4 +1,4 @@
-#	$OpenBSD: hostkey-agent.sh,v 1.13 2021/09/30 05:20:08 dtucker Exp $
+#	$OpenBSD: hostkey-agent.sh,v 1.14 2024/11/26 22:02:28 djm Exp $
 #	Placed in the Public Domain.
 
 tid="hostkey agent"
@@ -82,6 +82,30 @@ for k in $SSH_CERTTYPES ; do
 	fi
 done
 
+verbose "multiple hostkeys"
+cp $OBJ/sshd_proxy.orig $OBJ/sshd_proxy
+cp $OBJ/ssh_proxy $OBJ/ssh_proxy.orig
+grep -vi 'globalknownhostsfile' $OBJ/ssh_proxy.orig > $OBJ/ssh_proxy
+echo "UpdateHostkeys=yes" >> $OBJ/ssh_proxy
+echo "GlobalKnownHostsFile=none" >> $OBJ/ssh_proxy
+
+for k in $SSH_KEYTYPES ; do
+	verbose "Addkey type $k"
+	echo "Hostkey $OBJ/agent-key.${k}" >> $OBJ/sshd_proxy
+
+	( printf 'localhost-with-alias ' ;
+    cat $OBJ/agent-key.$k.pub) > $OBJ/known_hosts
+done
+
+opts="-oStrictHostKeyChecking=yes -F $OBJ/ssh_proxy"
+SSH_CONNECTION=`${SSH} $opts host 'echo $SSH_CONNECTION'`
+if [ $? -ne 0 ]; then
+	fail "connection to server with multiple hostkeys failed"
+fi
+if [ "$SSH_CONNECTION" != "UNKNOWN 65535 UNKNOWN 65535" ]; then
+	fail "bad SSH_CONNECTION key while using multiple hostkeys"
+fi
+
 trace "kill agent"
 ${SSHAGENT} -k > /dev/null
 
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