Manage ssh auth_key for BackupPC's user

client/install_backuppc_windows_bash_on_linux.sh

@@ -18,6 +18,7 @@ ERROR=1
 
 backuppc_user="backuppc"
 backuppc_homedir="/var/lib/backuppc"
+backuppc_sshkey="from=\"129.20.203.16\" ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDIhMc8ixQXfWDACJy4q0v8T877UxahhCjO51PQFzylwVpf88LX3yWeDrWIW0NRu0zoSm396mig918OpD5ggqML/QbYbQsoDdAFUV/tK4JU6UJgEQIl25MOcUBCFepsFBGS09CH/V07xSUqSP/+beeTRLNO2CQzk3S2y3YfkXpM7KmOGfeLgoCaQAcxIkgLXeM3TpCZEzJDlZ8c8k/DjVvsgwCpQktYzNo2b37KHLLfgyW9KSo6N9sReUuNQjS6lu8rjrXfc6+J0pY2D6IxWptTWL/JVrhFCUqe4QQy+xYjoR41wqnAQyl/kOcyBNhSvojMKwQT6vlPwru6pOno16/X backuppc@backuppc.ipr.univ-rennes1.fr"
 
 ## Couleur {{{
 BLACK='\033[49;30m'
@@ -46,6 +47,22 @@ function addUserForBackuppc()  ## {{{
 	chown -R -- "${userLogin}:" "${userHomedir}"
 }
 ## }}}
+function manageSshKeyForBackuppc()  ## {{{
+{
+	local userLogin="${1}"             ### eg. 'backuppc'
+	local backuppcSshKey="${2}"        ### eg. 'AAAAA...
+
+	local userHomedir
+	userHomedir="$(getent passwd "${userLogin}" | cut -d: -f6)"
+
+	### Create ssh directory for BackupPC's user
+	mkdir -p -- "${userHomedir}/.ssh"
+	chmod 0700 -- "${userHomedir}/.ssh"
+	printf '%b' "${backuppcSshKey}" > "${userHomedir}/.ssh/authorized_keys"
+	chmod 0600 -- "${userHomedir}/.ssh/authorized_keys"
+	chown -R -- "${userLogin}:" "${userHomedir}"
+}
+## }}}
 function ensureSshdIsInstalled()  ## {{{
 {
 	### `command -v sshd` still return old value even after openssh-server was removed
@@ -85,6 +102,7 @@ if [ "$?" != "${SUCCESS}" ]; then
 	printf '%b' "${REDB}La création de l'utilisateur ${backuppc_user} a échouée, installation annulée.${RESET}\\n"
 	exit "${ERROR}"
 fi
+manageSshKeyForBackuppc "${backuppc_user}" "${backuppc_sshkey}"
 
 # }}}
 # Gestion de SSH {{{