From 9b60386710a01033526d671d58ba4bca49a7ef31 Mon Sep 17 00:00:00 2001
From: Marco Raber <marco@raber.me>
Date: Sat, 11 Jun 2022 16:23:55 +0200
Subject: [PATCH] added first pubkey automation for yubikey

---
 sshin | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/sshin b/sshin
index 5a1739c..9b1ae57 100755
--- a/sshin
+++ b/sshin
@@ -14,6 +14,12 @@ IP_PREFIX="192.168.1."
 [[ $# -le 1 ]] && usage && exit 1
 [[ $1 = "-h" ]] && usage -h && exit 1
 re='^[0-9]+$'
+
+USUAL_PUBKEY=~/.ssh/id_rsa
+YUBIKEY_PUBKEY=~/.ssh/id_ed25519_sk
+
+HOSTS_FILE=~/.local/share/sshin/hosts
+
 command="ssh ${1}@"
 shift
 if [[ $1 =~ $re ]]
@@ -27,5 +33,17 @@ else
 	dport=$(grep $1 $ports_file | awk '{print $NF}')
 	[[ -n $port ]] && command="${command} -D$dport"
 fi
+
+#check if Yubikey is present
+lsusb | grep -q "Yubico" && YUBIKEY_PRESENCE=1 || YUBIKEY_PRESENCE=0
+
+#check if the host you are connecting to has Yubikey support (both client and server need openssh >= 8.2)
+YUBIKEY_SUPPORT=$(cat $HOSTS_FILE | grep $1 | awk '{print $2}')
+[[ $YUBIKEY_SUPPORT = "" ]] && echo "vuoto" && YUBIKEY_SUPPORT=0
+
+
+[[ $YUBIKEY_PRESENCE -eq 1 ]] && [[ $YUBIKEY_SUPPORT -eq 1 ]] && command="${command} -i $YUBIKEY_PUBKEY" || command="${command} -i $USUAL_PUBKEY" 
+
 echo $command
+#echo $YUBIKEY_SUPPORT
 $command