From de49ba5620c83879ab7ef4deb6a6d666f40cf893 Mon Sep 17 00:00:00 2001
From: Vlastimil Holer <vholer@opennebula.io>
Date: Fri, 26 Mar 2021 17:36:15 +0100
Subject: [PATCH] B #223: Mask ssh service during dpkg-reconfigure
 openssh-server

---
 .../one-context.d/loc-24-ssh_host_key##deb    | 27 ++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/src/etc/one-context.d/loc-24-ssh_host_key##deb b/src/etc/one-context.d/loc-24-ssh_host_key##deb
index 1063923..a206c21 100755
--- a/src/etc/one-context.d/loc-24-ssh_host_key##deb
+++ b/src/etc/one-context.d/loc-24-ssh_host_key##deb
@@ -16,7 +16,32 @@
 # limitations under the License.                                             #
 #--------------------------------------------------------------------------- #
 
+SERVICE_FILE='/etc/systemd/system/ssh.service'
+SERVICE_LINK='/dev/null-one-context'
+
+setup() {
+    if [ -d "$(dirname "${SERVICE_FILE}")" ] &&
+       ! stat "${SERVICE_FILE}" &>/dev/null;
+    then
+        ln -s "${SERVICE_LINK}" "${SERVICE_FILE}"
+    fi
+}
+
+clean() {
+    if [ -L "${SERVICE_FILE}" ] &&
+       [ "$(readlink "${SERVICE_FILE}")" = "${SERVICE_LINK}" ];
+    then
+        unlink "${SERVICE_FILE}"
+        systemctl daemon-reload &>/dev/null || :
+    fi
+}
+
+###
+
+trap 'clean' EXIT
+
 if [ ! -f /etc/ssh/ssh_host_rsa_key ]; then
+    setup
+
     DEBIAN_FRONTEND=noninteractive dpkg-reconfigure openssh-server
 fi
-