def reset_hook(self, vpn_nameserver_hook_conf: Path):
logger.info(f'Reset VPN DNS config file...')
if FileHelper.is_writable(vpn_nameserver_hook_conf):
FileHelper.write_file(vpn_nameserver_hook_conf,
mode=0o644,
content='')
FileHelper.create_symlink(vpn_nameserver_hook_conf,
self._dnsmasq_vpn_hook_cfg,
force=True)
else:
FileHelper.rm(self._dnsmasq_vpn_hook_cfg)
def setup(self, vpn_service: str, origin_resolv_conf: Path,
vpn_resolv_conf: Path, vpn_nameserver_hook_conf: Path):
if not self._available:
logger.error('[dnsmasq] is not yet installed or is corrupted')
sys.exit(ErrorCode.MISSING_REQUIREMENT)
logger.info('Setup DNS resolver[dnsmasq]...')
dnsmasq_vpn_cfg = self._dnsmasq_vpn_cfg(vpn_service)
runtime_resolv_cfg = self.adapt_dnsmasq(origin_resolv_conf,
vpn_service)
dnsmasq_opts = {
'{{DNS_RESOLVED_FILE}}':
self.__build_dnsmasq_conf('resolv-file', runtime_resolv_cfg),
'{{PORT}}':
self.__build_dnsmasq_conf('port',
self.dnsmasq_options().get('port',
None)),
'{{CACHE_SIZE}}':
self.__build_dnsmasq_conf(
'cache-size',
self.dnsmasq_options().get('cache_size', None))
}
logger.debug(
f'Add [dnsmasq] config for {vpn_service}[{dnsmasq_vpn_cfg}]...')
FileHelper.copy(self.resource_dir.joinpath(self.DNSMASQ_CONFIG_TMPL),
dnsmasq_vpn_cfg,
force=True)
FileHelper.replace_in_file(dnsmasq_vpn_cfg, dnsmasq_opts, backup='')
FileHelper.chmod(dnsmasq_vpn_cfg, mode=0o0644)
logger.debug(
f'Symlink [dnsmasq] VPN nameserver runtime configuration [{vpn_nameserver_hook_conf}]...'
)
FileHelper.create_symlink(vpn_nameserver_hook_conf,
self._dnsmasq_vpn_hook_cfg,
force=True)
logger.info(f'Generate System DNS config file from VPN service...')
FileHelper.write_file(vpn_resolv_conf,
self.__dnsmasq_resolv(vpn_service),
mode=0o0644)
FileHelper.create_symlink(vpn_resolv_conf,
DNSResolver.DNS_SYSTEM_FILE,
force=True)
self.service.enable(self.config.identity)