#!/usr/bin/env python3 # # Copyright (C) 2019 VyOS maintainers and contributors # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License version 2 or later as # published by the Free Software Foundation. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. # # Description: # Check if a given file exists on the system. Used for files that # are referenced from the CLI and need to be preserved during an image upgrade. # Warn the user if these aren't under /config import os import sys import argparse def exit(strict, message): if strict: sys.exit(f'ERROR: {message}') print(f'WARNING: {message}', file=sys.stderr) sys.exit() if __name__ == '__main__': parser = argparse.ArgumentParser() parser.add_argument("-d", "--directory", type=str, help="File must be present in this directory.") parser.add_argument("-e", "--error", action="store_true", help="Tread warnings as errors - change exit code to '1'") parser.add_argument("file", type=str, help="Path of file to validate") args = parser.parse_args() # # Always check if the given file exists # if not os.path.exists(args.file): exit(args.error, f"File '{args.file}' not found") # # Optional check if the file is under a certain directory path # if args.directory: # remove directory path from path to verify rel_filename = args.file.replace(args.directory, '').lstrip('/') if not os.path.exists(args.directory + '/' + rel_filename): exit(args.error, f"'{args.file}' lies outside of '{args.directory}' directory.\n" "It will not get preserved during image upgrade!" ) sys.exit()