cli: import from contrib/examples/android

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

cli/addonsd.sh

@@ -0,0 +1,37 @@
+#!/sbin/sh
+
+. /tmp/backuptool.functions
+
+list_files() {
+cat <<_EOF
+xbin/wg
+xbin/wg-quick
+_EOF
+}
+
+case "$1" in
+	backup)
+		list_files | while read FILE DUMMY; do
+			backup_file $S/"$FILE"
+		done
+	;;
+	restore)
+		list_files | while read FILE REPLACEMENT; do
+			R=""
+			[ -n "$REPLACEMENT" ] && R="$S/$REPLACEMENT"
+			[ -f "$C/$S/$FILE" ] && restore_file $S/"$FILE" "$R"
+		done
+	;;
+	pre-backup)
+		# Stub
+	;;
+	post-backup)
+		# Stub
+	;;
+	pre-restore)
+		# Stub
+	;;
+	post-restore)
+		# Stub
+	;;
+esac