From 15d48f3d5560fcba0c203c8cf0221d30b7229b6b Mon Sep 17 00:00:00 2001
From: f <f@sutty.nl>
Date: Sat, 20 May 2023 12:05:39 -0300
Subject: [PATCH] feat: known hosts

---
 backup.sh | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/backup.sh b/backup.sh
index 2280379..4ab31f4 100755
--- a/backup.sh
+++ b/backup.sh
@@ -6,14 +6,25 @@ test -n "${BORG_PASSPHRASE}"
 test -n "${DEST}"
 test -n "${SSH_ALIAS}"
 
+# Defaults
+SSH_PORT="${SSH_PORT:-22}"
+SSH_SERVER="${SSH_SERVER:-${SSH_ALIAS}}"
+SSH_USER="${SSH_USER:-root}"
+
+umask 077
+
 DATE="$(date +%F)"
 ORIG=/srv/data
 
 if ! grep -q "${SSH_ALIAS}" /root/.ssh/config ; then
-  echo "Host ${SSH_ALIAS}"                      >> /root/.ssh/config
-  echo "  Port ${SSH_PORT:-22}"                 >> /root/.ssh/config
-  echo "  HostName ${SSH_SERVER:-${SSH_ALIAS}}" >> /root/.ssh/config
-  echo "  User ${SSH_USER:-root}"               >> /root/.ssh/config
+  echo "Host ${SSH_ALIAS}"        >> /root/.ssh/config
+  echo "  Port ${SSH_PORT}"       >> /root/.ssh/config
+  echo "  HostName ${SSH_SERVER}" >> /root/.ssh/config
+  echo "  User ${SSH_USER}"       >> /root/.ssh/config
+fi
+
+if ! ssh-keygen -F "[${SSH_SERVER}]:${SSH_PORT}"; then
+  echo "${SSH_KNOWN_HOSTS}" >> /root/.ssh/known_hosts
 fi
 
 ssh -fN ${SSH_ALIAS}