def _apply_conf(cls, conf):
""" Applies nft configuration submitted from webUI """
with open(cls.NEW_CONF, 'w') as f:
f.write(conf.replace('\r\n', '\n'))
_, ret_code = run_command(f'nft -f {cls.NEW_CONF}')
if ret_code:
raise NFTablesException
def _restore_backup(cls):
""" Restores previous nft configuration from a file """
run_command(f'nft -f {cls.BACKUP_CONF_NAME}')
def _backup_conf(cls):
""" Backups current nft configuration to a file """
run_command(f'nft list ruleset > {cls.BACKUP_CONF_NAME}')
def _delete_rules():
""" Delete all rules from nft configuration """
run_command('nft flush ruleset')
def get_current_configuration(cls) -> str:
""" Returns current nft configuration """
conf, ret_code = run_command('nft list ruleset')
if ret_code:
raise NFTablesException("Error during configuration access")
return conf