def do_install(self,
service_opts: UnixServiceOpts,
auto_startup: bool = False,
auto_connman_dhcp: bool = False):
FileHelper.mkdirs(self.opts.vpn_dir.parent)
FileHelper.unpack_archive(ClientOpts.get_resource(ClientOpts.VPN_ZIP),
self.opts.vpn_dir)
FileHelper.mkdirs([self.opts.vpn_dir, self.opts.runtime_dir])
FileHelper.chmod(self.opts.runtime_dir, mode=0o0755)
FileHelper.chmod([
os.path.join(self.opts.vpn_dir, p) for p in ('vpnclient', 'vpncmd')
],
mode=0o0755)
_, cmd = EnvHelper.build_executable_command()
svc_opts = self._standard_service_opt(service_opts)
self.device.unix_service.create(
svc_opts, {
'{{WORKING_DIR}}': f'{self.opts.vpn_dir}',
'{{VPN_DESC}}': svc_opts.service_name,
'{{START_CMD}}': f'{cmd} start --vpn-dir {self.opts.vpn_dir}',
'{{STOP_CMD}}': f'{cmd} stop --vpn-dir {self.opts.vpn_dir}'
}, auto_startup)
self._dump_cache_service(svc_opts)
self.device.ip_resolver.add_hook(svc_opts.service_name, {
'{{WORKING_DIR}}': f'{self.opts.vpn_dir}',
'{{VPN_CLIENT_CLI}}': cmd
})
self.device.dns_resolver.create_config(svc_opts.service_name,
auto_connman_dhcp)
self.storage.empty()
self.opts.export_env()
def __dns(vpn_opts: ClientOpts, nic: str, reason: str, new_nameservers: str,
old_nameservers: str, debug: bool):
logger.info(f'Discover DNS with {reason}::{nic}...')
_reason = DHCPReason[reason]
if not vpn_opts.is_vpn_nic(nic):
logger.warn(f'NIC[{nic}] does not belong to VPN service')
sys.exit(0)
executor = VPNClientExecutor(
vpn_opts, adhoc_task=True).require_install().probe(silent=True,
log_lvl=logger.INFO)
current = executor.storage.get_current(info=True)
if not current:
current = executor.storage.find(executor.opts.nic_to_account(nic))
if not current:
logger.warn(f'Not found any VPN account')
sys.exit(ErrorCode.VPN_ACCOUNT_NOT_FOUND)
if executor.opts.nic_to_account(nic) != current.account:
logger.warn(f'NIC[{nic}] does not meet current VPN account')
sys.exit(ErrorCode.VPN_ACCOUNT_NOT_MATCH)
if debug:
now = datetime.now().isoformat()
FileHelper.write_file(
FileHelper.tmp_dir().joinpath('vpn_dns'),
append=True,
content=
f"{now}::{reason}::{nic}::{new_nameservers}::{old_nameservers}\n")
executor.device.dns_resolver.resolve(executor.vpn_service, _reason,
current.hub, new_nameservers,
old_nameservers)
def show(vpn_opts: VpnOpts,
version: str,
sha: str,
show_brand=False,
show_license=False,
is_json=False):
if show_brand and not is_json:
brand = FileHelper.read_file_by_line(
vpn_opts.get_resource('banner.txt'))
brand and print(brand)
ver = {
"vpn_version": vpn_opts.get_vpn_version(Versions.VPN_VERSION),
"cli_version": version,
"hash_version": sha
}
if is_json:
print(JsonHelper.to_json(ver))
else:
logger.info(f'VPN version : {ver.get("vpn_version")}')
logger.info(f'CLI version : {ver.get("cli_version")}')
logger.info(f'Hash version: {ver.get("hash_version")}')
logger.sep(logger.INFO, 58)
if show_license:
print(
FileHelper.read_file_by_line(
vpn_opts.get_resource('LICENSE_BUNDLE.md'),
fallback_if_not_exists=''))
def _check_pid(pid_file: str, log_lvl=logger.TRACE) -> int:
try:
logger.log(log_lvl, f'Read PID file {pid_file}')
pid = FileHelper.read_file_by_line(pid_file)
pid = int(pid)
if pid and pid > 0 and SystemHelper.is_pid_exists(pid):
return pid
except Exception as _:
FileHelper.rm(pid_file)
return 0
def remove(self, svc_opts: UnixServiceOpts, force: bool = False):
service_fqn = self.to_service_fqn(svc_opts.service_dir,
svc_opts.service_name)
self.stop(svc_opts.service_name)
self.disable(svc_opts.service_name)
if force and FileHelper.is_exists(service_fqn):
logger.info(f'Remove System service [{svc_opts.service_name}]...')
FileHelper.rm(service_fqn)
SystemHelper.exec_command("systemctl daemon-reload",
silent=True,
log_lvl=logger.INFO)
def gen_intermediate_cert(cert_key, private_key, prefix, items, output_opts: OutputOpts,
cert_attributes: CertAttributes):
"""
Generate an Intermediate Signed certificate
"""
outputs = {}
ca_crt, ca_pkey = __load_key(cert_key, private_key)
for item in items:
outputs[item] = __gen_cert(f'{prefix}.{item}', cert_attributes, ca_crt, ca_pkey)
FileHelper.write_file(output_opts.make_file(f"{item}.key"), outputs[item]['private_key'])
FileHelper.write_file(output_opts.make_file(f"{item}.crt"), outputs[item]['cert_key'])
JsonHelper.dump(output_opts.make_file(f"signed-intermediate-{output_opts.file}.json"), outputs)
def restore_config(self, vpn_service: str, keep_dnsmasq=True):
if not keep_dnsmasq:
logger.debug(
f'Remove dnsmasq vpn hook config [{self._dnsmasq_vpn_hook_cfg}]'
)
FileHelper.rm(self._dnsmasq_vpn_hook_cfg)
logger.debug(
f'Remove dnsmasq vpn config [{self._dnsmasq_vpn_cfg(vpn_service)}]'
)
FileHelper.rm(self._dnsmasq_vpn_cfg(vpn_service))
if self._resolver:
self._resolver.restore_config(vpn_service, keep_dnsmasq)
def update_hook(self, reason: DHCPReason, priv_root_dns: str,
nameservers: list, vpn_nameserver_hook_conf: Path):
logger.info(
f'Update VPN DNS config file on [{reason.name}][{priv_root_dns}] with nameservers {nameservers}...'
)
servers = '\n'.join(
[f'server=/{priv_root_dns}/{ns}' for ns in nameservers])
FileHelper.write_file(
vpn_nameserver_hook_conf,
mode=0o644,
content=
f'### Generated at [{datetime.now().isoformat()}]\n{servers}\n')
def cleanup_config(self, vpn_service: str, keep_dnsmasq=True):
if self.is_connman():
return
resolver = self._resolver()
if keep_dnsmasq:
resolver.reset_hook(self.vpn_hook_cfg)
elif FileHelper.is_readable(self.origin_resolv_cfg):
logger.info(f'Restore System DNS config file...')
FileHelper.backup(self.origin_resolv_cfg,
DNSResolver.DNS_SYSTEM_FILE)
FileHelper.rm(self.vpn_resolv_cfg)
resolver.restore_config(vpn_service, keep_dnsmasq)
resolver.restart(_all=not keep_dnsmasq, keep_dnsmasq=keep_dnsmasq)
def change_host_name(hostname: str, log_lvl=logger.DEBUG):
prev_regex = re.escape('127.0.1.1') + r'\s+' + re.escape(
socket.gethostname()) + r'.*'
SystemHelper.exec_command(f'hostnamectl set-hostname {hostname}',
log_lvl=logger.down_lvl(log_lvl))
FileHelper.replace_in_file('/etc/hosts',
{prev_regex: f'127.0.1.1 {hostname}'},
regex=True)
SystemHelper.exec_command(f'hostnamectl', silent=True, log_lvl=log_lvl)
logger.sep(level=log_lvl, quantity=20)
SystemHelper.exec_command(f'cat /etc/hosts',
silent=True,
log_lvl=log_lvl)
logger.sep(level=log_lvl)
def adapt_dnsmasq(self, origin_resolv_conf: Path,
vpn_service: str) -> Optional[Path]:
content = FileHelper.read_file_by_line(self.config.main_cfg)
resolv = TextHelper.awk(next(
iter(TextHelper.grep(content, r'dnsmasq_resolv=.+')), None),
sep='=',
pos=1)
return Path(resolv or self.config.runtime_resolv)
def do_uninstall(self,
keep_vpn: bool = True,
keep_dnsmasq: bool = True,
service_opts: UnixServiceOpts = None,
log_lvl: int = logger.INFO):
vpn_service = self._standard_service_opt(service_opts).service_name
logger.info(f'Uninstall VPN service [{vpn_service}]...')
self.do_delete([a.account for a in self.storage.list()],
force_stop=True,
log_lvl=log_lvl)
if not keep_vpn:
logger.log(log_lvl, f'Remove VPN Client [{self.opts.vpn_dir}]...')
self.device.ip_resolver.remove_hook(vpn_service)
self.opts.remove_env()
FileHelper.rm(self.opts.vpn_dir)
self.device.dns_resolver.cleanup_config(vpn_service,
keep_dnsmasq=keep_dnsmasq)
def gen_ssh(users, output_opts: OutputOpts):
"""
Generate SSH key
"""
output = {}
crypto_backend = crypto_default_backend()
for user in users:
ssh_key = rsa.generate_private_key(backend=crypto_backend, public_exponent=65537, key_size=4096)
private_ssh_key = __serialize_private_key(ssh_key)
public_ssh_key = ssh_key.public_key() \
.public_bytes(crypto_serialization.Encoding.OpenSSH, crypto_serialization.PublicFormat.OpenSSH) \
.decode(DEFAULT_ENCODING)
output[user] = {'private_ssh_key': private_ssh_key, 'public_ssh_key': public_ssh_key}
FileHelper.write_file(output_opts.make_file(user + "_ssh"), private_ssh_key)
FileHelper.write_file(output_opts.make_file(user + "_ssh.pub"), public_ssh_key)
JsonHelper.dump(output_opts.to_fqn_file(".json"), output)
def gen_root_cert(output_opts: OutputOpts, cert_attributes: CertAttributes):
"""
Generate Root Certification
"""
crypto_backend = crypto_default_backend()
algorithm = hashes.SHA512()
now = datetime.datetime.utcnow()
private_key = rsa.generate_private_key(public_exponent=65537, key_size=4096, backend=crypto_backend)
subject = issuer = cert_attributes.create_x509_attributes()
crt = x509.CertificateBuilder() \
.subject_name(subject).issuer_name(issuer).public_key(private_key.public_key()) \
.serial_number(x509.random_serial_number()).not_valid_before(now) \
.not_valid_after(now + datetime.timedelta(days=cert_attributes.valid_days)) \
.sign(private_key, algorithm, crypto_backend)
root_private_key = __serialize_private_key(private_key)
root_cert_key = crt.public_bytes(encoding=crypto_serialization.Encoding.PEM).decode(DEFAULT_ENCODING)
output = {'private_key': root_private_key, 'cert_key': root_cert_key, 'serial_number': f'{crt.serial_number:0>40X}'}
FileHelper.write_file(output_opts.to_fqn_file("key"), root_private_key)
FileHelper.write_file(output_opts.to_fqn_file("crt"), root_cert_key)
JsonHelper.dump(output_opts.to_fqn_file("json"), output)
def __validate_nameservers(self,
reason: DHCPReason,
new_ns: str = None,
old_ns: str = None) -> Optional[list]:
if reason.is_ignore():
return None
if reason is DHCPReason.RENEW and new_ns == old_ns and FileHelper.is_readable(
self.vpn_hook_cfg):
return None
nameservers = old_ns if reason.is_unreachable() else new_ns
return [ns for ns in nameservers.split(',')
if ns][0:2] if nameservers else None
def gen_signed_cert(cert_key, private_key, intermediate_code: str, fn: str, items: list, dump_to_file: bool,
seq: bool, quantity: int, start_from: int, prefix: str, length: int,
output_opts: OutputOpts, cert_attributes: CertAttributes):
"""
Generate Signed certificate
"""
if not seq and not items:
raise RuntimeError('Must provide singed certification name')
if seq:
if quantity <= 0 or start_from <= 0 or length <= 0:
raise RuntimeError('Invalid value in sequence mode. All of [quantity, start_from, length] must be > 0')
seq_format = f'0{length}d'
items = [f'{prefix}{x:{seq_format}}' for x in range(start_from, start_from + quantity)]
outputs = {}
ca_crt, ca_pkey = __load_key(cert_key, private_key)
for item in items:
outputs[item] = __gen_cert(f'{item}.{fn}.{intermediate_code}', cert_attributes, ca_crt, ca_pkey)
if dump_to_file:
FileHelper.write_file(output_opts.make_file(f"{item}.key"), outputs[item]['private_key'])
FileHelper.write_file(output_opts.make_file(f"{item}.crt"), outputs[item]['cert_key'])
JsonHelper.dump(output_opts.make_file(f"{intermediate_code}-{output_opts.file}.json"), outputs)
def __import(server_opts: ServerOpts, hub_password: str, vpn_opts: ToolOpts,
group: str, certs_file: str, output_opts: OutputOpts):
executor = VPNAuthExecutor(vpn_opts, server_opts, hub_password)
data = JsonHelper.read(certs_file, strict=False)
tmp_dir = FileHelper.tmp_dir('vpn_auth')
command_file = FileHelper.touch(tmp_dir.joinpath('vpncmd.txt'))
vpn_acc = {}
for k, v in data.items():
cert_file = tmp_dir.joinpath(f'{k}.cert')
FileHelper.write_file(cert_file, v['cert_key'])
commands = [
f'CAAdd /{cert_file}',
f'UserCreate {k} /GROUP:{group or "none"} /RealName:none /Note:none',
f'UserSignedSet {k} /CN:{v["fqdn"]} /SERIAL:{v["serial_number"]}'
]
vpn_acc[k] = {
'vpn_server': server_opts.host,
'vpn_port': server_opts.port,
'vpn_hub': server_opts.hub,
'vpn_account': server_opts.hub,
'vpn_auth_type': 'cert',
'vpn_user': k,
'vpn_cert_key': v['cert_key'],
'vpn_private_key': v['private_key'],
}
FileHelper.write_file(command_file,
'\n'.join(commands) + '\n',
append=True)
executor.exec_command(f'/IN:{command_file}', log_lvl=logger.INFO)
logger.sep(logger.INFO)
out = output_opts.make_file(
f'{server_opts.hub}-{output_opts.to_file("json")}')
logger.info(f'Export VPN accounts to {out}...')
JsonHelper.dump(out, vpn_acc)
logger.done()
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 create_config(self, vpn_acc: str, replacements: dict):
config_file = self._to_config_file(vpn_acc)
logger.log(self.log_lvl,
f'Create DHCP client VPN config[{config_file}]...')
FileHelper.copy(self.resource_dir.joinpath(self.DHCLIENT_CONFIG_TMPL),
config_file,
force=True)
FileHelper.replace_in_file(config_file, replacements, backup='')
FileHelper.chmod(config_file, mode=0o0644)
def create_config(self, vpn_service: str, auto_connman_dhcp: bool):
if self.is_connman():
FileHelper.write_file(self.connman_dhcp, str(auto_connman_dhcp))
return
if not FileHelper.is_readable(self.origin_resolv_cfg):
logger.info(
f'Backup System DNS config file to [{self.origin_resolv_cfg}]...'
)
FileHelper.backup(DNSResolver.DNS_SYSTEM_FILE,
self.origin_resolv_cfg,
remove=False)
if not FileHelper.is_readable(self.origin_resolv_cfg):
logger.error(
f'Not found origin DNS config file [{self.origin_resolv_cfg}]')
sys.exit(ErrorCode.FILE_CORRUPTED)
if not FileHelper.is_readable(self.vpn_hook_cfg):
FileHelper.touch(self.vpn_hook_cfg, 0o0644)
self._resolver().setup(vpn_service, self.origin_resolv_cfg,
self.vpn_resolv_cfg, self.vpn_hook_cfg)
self._resolver().restart(_all=True)
def add_hook(self, service_name: str, replacements: dict):
exit_hook_file = self._to_hook_file(service_name)
logger.log(self.log_lvl,
f'Create DHCP client VPN hook[{exit_hook_file}]...')
FileHelper.copy(self.resource_dir.joinpath(
self.DHCLIENT_EXIT_HOOK_TMPL),
exit_hook_file,
force=True)
FileHelper.replace_in_file(exit_hook_file, replacements, backup='')
FileHelper.chmod(exit_hook_file, mode=0o0744)
def restore_config(self, backup_dir: Path, keep_backup: bool):
logger.info(
f'Restore VPN configuration [{backup_dir}] to [{self.opts.vpn_dir}]...'
)
FileHelper.copy(backup_dir.joinpath(self.opts.VPN_CONFIG_FILE),
self.opts.config_file,
force=True)
FileHelper.copy(backup_dir.joinpath(self.opts.RUNTIME_FOLDER),
self.opts.runtime_dir,
force=True)
FileHelper.rm(backup_dir, force=not keep_backup)
def _common_adapt_dnsmasq(self, vpn_service: str):
identity = self.config.identity
logger.debug(
f'Adapt [{identity}] DNS resolver service to compatible with [dnsmasq] and [{vpn_service}]...'
)
FileHelper.mkdirs(self.config.config_dir)
FileHelper.copy(self.resource_dir.joinpath(f'dnsmasq-{identity}.conf'),
self.config.to_fqn_cfg(self.DNSMASQ_TUNED_CFG), True)
FileHelper.chmod(self.config.to_fqn_cfg(self.DNSMASQ_TUNED_CFG),
mode=0o0644)
return self.config.runtime_resolv
def backup_config(self):
backup_dir = self.opts.backup_dir()
logger.info(
f'Backup VPN configuration [{self.opts.vpn_dir}] to [{backup_dir}] ...'
)
FileHelper.mkdirs(backup_dir)
FileHelper.copy(self.opts.config_file, backup_dir, force=True)
FileHelper.copy(self.opts.runtime_dir,
backup_dir.joinpath(self.opts.RUNTIME_FOLDER),
force=True)
default_acc = self.storage.get_default()
current_acc = self.storage.get_current()
svc_opt = self._standard_service_opt()
return default_acc, current_acc, svc_opt, backup_dir
def create(self,
svc_opts: UnixServiceOpts,
replacements: dict,
auto_startup: bool = False):
service_fqn = self.to_service_fqn(svc_opts.service_dir,
svc_opts.service_name)
logger.info(
f'Add new service [{svc_opts.service_name}] in [{service_fqn}]...')
FileHelper.copy(self.resource_dir.joinpath(Systemd.SERVICE_FILE_TMPL),
service_fqn,
force=True)
FileHelper.replace_in_file(service_fqn, replacements, backup='')
FileHelper.chmod(service_fqn, mode=0o0644)
SystemHelper.exec_command("systemctl daemon-reload",
silent=True,
log_lvl=logger.INFO)
if auto_startup:
self.enable(svc_opts.service_name)
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)
def remove_hook(self, service_name: str):
exit_hook_file = self._to_hook_file(service_name)
logger.log(self.log_lvl,
f'Remove DHCP client VPN hook[{exit_hook_file}]...')
FileHelper.rm(exit_hook_file, force=True)
def _common_remove_dnsmasq(self, vpn_service: str, keep_dnsmasq: bool):
if not keep_dnsmasq:
cfg = self.config.to_fqn_cfg(self.DNSMASQ_TUNED_CFG)
logger.debug(
f'Remove [dnsmasq] and [{vpn_service}] plugin[{cfg}]...')
FileHelper.rm(cfg)
def is_enable_connman_dhcp(self) -> bool:
yes_ = ('true', 't', 'yes', '1')
return self.is_connman() and FileHelper.read_file_by_line(
self.connman_dhcp, fallback_if_not_exists='0').lower() in yes_
def adapt_dnsmasq(self, origin_resolv_conf: Path,
vpn_service: str) -> Optional[Path]:
return FileHelper.get_target_link(origin_resolv_conf) or self.config.runtime_resolv if \
FileHelper.is_readable(self.config.runtime_resolv) else origin_resolv_conf
