pkgs/clerie-backup: Support sftp backend for restic

pkgs/clerie-backup/clerie-backup.sh

@@ -45,30 +45,39 @@ if [[ ! -f "${CONFIG_DIR}/auth_username" ]]; then
 	echo "File ${CONFIG_DIR}/auth_username not found"
 	ISSUE_EXIST=1
 fi
-if [[ ! -f "${CONFIG_DIR}/auth_password" ]]; then
-	echo "File ${CONFIG_DIR}/auth_password not found"
-	ISSUE_EXIST=1
-fi
 if [[ -n "${ISSUE_EXIST}" ]]; then
 	exit 1
 fi
 
 RESTIC_PASSWORD_FILE="${CONFIG_DIR}/repo_password"
 export RESTIC_PASSWORD_FILE
-RESTIC_REPOSITORY="rest:$(cat "${CONFIG_DIR}/repo_url")"
+REPO_URL="$(cat "${CONFIG_DIR}/repo_url")"
+if [[ "${REPO_URL}" == http* ]]; then
+	RESTIC_REPOSITORY="rest:${REPO_URL}"
+else
+	RESTIC_REPOSITORY="${REPO_URL}"
+fi
 export RESTIC_REPOSITORY
 RESTIC_REST_USERNAME="$(cat "${CONFIG_DIR}/auth_username")"
 export RESTIC_REST_USERNAME
-RESTIC_REST_PASSWORD="$(cat "${CONFIG_DIR}/auth_password")"
-export RESTIC_REST_PASSWORD
+if [[ -e "${CONFIG_DIR}/auth_password" ]]; then
+	RESTIC_REST_PASSWORD="$(cat "${CONFIG_DIR}/auth_password")"
+	export RESTIC_REST_PASSWORD
+fi
 RESTIC_PROGRESS_FPS="0.1"
 export RESTIC_PROGRESS_FPS
 RESTIC_CACHE_DIR="/var/cache/restic"
 export RESTIC_CACHE_DIR
 
+EXTRA_OPTIONS=()
+
+if [[ -e "${CONFIG_DIR}/ssh_key" ]]; then
+	EXTRA_OPTIONS+=("-o" "sftp.args='-o IdentityFile=${CONFIG_DIR}/ssh_key'")
+fi
+
 case "${ACTION}" in
 restic)
-	restic "$@"
+	restic "${EXTRA_OPTIONS[@]}" "$@"
 	;;
 backup)
 	ISSUE_EXIST=
@@ -84,9 +93,9 @@ backup)
 		exit 1
 	fi
 
-        restic snapshots --latest 1 || restic init
+        restic "${EXTRA_OPTIONS[@]}" snapshots --latest 1 || restic "${EXTRA_OPTIONS[@]}" init
 
-        restic backup --exclude-file "${CONFIG_DIR}/excludes" --files-from "${CONFIG_DIR}/files"
+        restic "${EXTRA_OPTIONS[@]}" backup --exclude-file "${CONFIG_DIR}/excludes" --files-from "${CONFIG_DIR}/files"
 	;;
 *)
 	echo "Unsupported ACTION: ${ACTION}"