116 lines
4.3 KiB
Python
116 lines
4.3 KiB
Python
import logging
|
|
import os
|
|
import subprocess
|
|
import warnings
|
|
|
|
|
|
logger = logging.getLogger()
|
|
|
|
|
|
class RADVDSvc(object):
|
|
svc_name = 'radvd'
|
|
|
|
def __init__(self):
|
|
self.name = self.svc_name
|
|
self.is_systemd = False
|
|
self._get_manager()
|
|
|
|
def _get_manager(self):
|
|
chkpaths = ('/run/systemd/system',
|
|
'/dev/.run/systemd',
|
|
'/dev/.systemd')
|
|
for _ in chkpaths:
|
|
if os.path.exists(_):
|
|
self.is_systemd = True
|
|
break
|
|
return(None)
|
|
|
|
def restart(self):
|
|
if self.is_systemd:
|
|
cmd = ['systemd', 'restart', self.name]
|
|
else:
|
|
# Systemd haters, if you don't understand the benefits of unified service management across all linux
|
|
# distros, you've obviously never done wide-platform management or scripting.
|
|
# Let this else block be a learning experience for you.
|
|
cmd = None
|
|
has_pkill = False
|
|
for p in os.environ.get('PATH', '/usr/bin').split(':'):
|
|
fpath = os.path.abspath(os.path.expanduser(p))
|
|
bins = os.listdir(fpath)
|
|
if 'pkill' in bins:
|
|
has_pkill = True
|
|
if 'service' in bins: # CentOS/RHEL pre-7.x
|
|
cmd = ['service', self.name, 'restart']
|
|
break
|
|
elif 'initctl' in bins: # older Ubuntu and other Upstart distros
|
|
cmd = ['initctl', 'restart', self.name]
|
|
break
|
|
elif 'rc-service' in bins: # OpenRC
|
|
cmd = ['rc-service', self.name, 'restart']
|
|
break
|
|
# That wasn't even all of them.
|
|
if not cmd and has_pkill: # last-ditch effort.
|
|
cmd = ['pkill', '-HUP', self.name]
|
|
if not cmd:
|
|
logger.error('Could not find which service manager this system is using.')
|
|
raise RuntimeError('Could not determine service manager')
|
|
cmd_exec = subprocess.run(cmd, stdin = subprocess.PIPE, stdout = subprocess.PIPE)
|
|
if cmd_exec.returncode != 0:
|
|
logger.warning('Could not successfully restart {0}; returned status {1}'.format(self.name,
|
|
cmd_exec.returncode))
|
|
for i in ('stdout', 'stderr'):
|
|
s = getattr(cmd_exec, i).decode('utf-8')
|
|
if s.strip() != '':
|
|
logger.warning('{0}: {1}'.format(i.upper(), s))
|
|
warnings.warn('Service did not restart successfully')
|
|
return(None)
|
|
|
|
|
|
class RADVDConf(object):
|
|
path = '/etc/radvd.conf'
|
|
tpl = ('interface {iface} {{\n'
|
|
'\tAdvSendAdvert on;\n'
|
|
# '\tAdvLinkMTU 1280;\n' # Is it 1480 or 1280? Arch wiki says 1480, but everything else (older) says 1280.
|
|
'\tAdvLinkMTU 1480;\n'
|
|
'\tMinRtrAdvInterval 60;\n'
|
|
'\tMaxRtrAdvInterval 600;\n'
|
|
'\tAdvDefaultLifetime 9000;\n'
|
|
'{prefix}'
|
|
'route ::/0 {{\n'
|
|
'\t\tAdvRouteLifetime infinity;'
|
|
'}};\n'
|
|
'{rdnss}'
|
|
'}};\n\n')
|
|
tpl_prefix = ('\tprefix {subnet} {{\n'
|
|
'\t\tAdvOnLink on;'
|
|
'\t\tAdvAutonomous on;'
|
|
'\t\tAdvRouterAddr off;\n'
|
|
'}};\n')
|
|
tpl_rdnss = ('\tRDNSS {client_ip} {{\n'
|
|
'\t\tAdvRDNSSOpen on;\n'
|
|
'\t\tAdvRDNSSPreference 2;\n'
|
|
'}};\n')
|
|
|
|
def __init__(self, cfg = None):
|
|
if not cfg:
|
|
self.cfg = self.path
|
|
else:
|
|
self.cfg = os.path.abspath(os.path.expanduser(cfg))
|
|
self.cfgStr = None
|
|
|
|
def generate(self, assign_objs):
|
|
self.cfgStr = ''
|
|
for assign_obj in assign_objs:
|
|
prefix = self.tpl_prefix.format(subnet = str(assign_obj.net))
|
|
if assign_obj.dns:
|
|
dns = self.tpl_rdnss.format(client_ip = assign_obj.iface_ip.str)
|
|
else:
|
|
dns = ''
|
|
self.cfgStr += self.tpl.format(prefix = prefix, rdnss = dns)
|
|
|
|
|
|
class RADVD(object):
|
|
def __init__(self):
|
|
self.svc = RADVDSvc()
|
|
self.conf = RADVDConf(cfg = '/etc/radvd.conf')
|