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# This file is part of cloud-init. See LICENSE file for license information.
import re
from cloudinit import log as logging
from cloudinit import net
from cloudinit import util
from cloudinit import subp
from cloudinit.distros.parsers.resolv_conf import ResolvConf
from cloudinit.distros import bsd_utils
from . import renderer
LOG = logging.getLogger(__name__)
class BSDRenderer(renderer.Renderer):
resolv_conf_fn = 'etc/resolv.conf'
rc_conf_fn = 'etc/rc.conf'
def get_rc_config_value(self, key):
fn = subp.target_path(self.target, self.rc_conf_fn)
bsd_utils.get_rc_config_value(key, fn=fn)
def set_rc_config_value(self, key, value):
fn = subp.target_path(self.target, self.rc_conf_fn)
bsd_utils.set_rc_config_value(key, value, fn=fn)
def __init__(self, config=None):
if not config:
config = {}
self.target = None
self.interface_configurations = {}
self._postcmds = config.get('postcmds', True)
def _ifconfig_entries(self, settings):
ifname_by_mac = net.get_interfaces_by_mac()
for interface in settings.iter_interfaces():
device_name = interface.get("name")
device_mac = interface.get("mac_address")
if device_name and re.match(r'^lo\d+$', device_name):
continue
if device_mac not in ifname_by_mac:
LOG.info('Cannot find any device with MAC %s', device_mac)
elif device_mac and device_name:
cur_name = ifname_by_mac[device_mac]
if cur_name != device_name:
LOG.info('netif service will rename interface %s to %s',
cur_name, device_name)
try:
self.rename_interface(cur_name, device_name)
except NotImplementedError:
LOG.error((
'Interface renaming is '
'not supported on this OS'))
device_name = cur_name
else:
device_name = ifname_by_mac[device_mac]
LOG.info('Configuring interface %s', device_name)
self.interface_configurations[device_name] = 'DHCP'
for subnet in interface.get("subnets", []):
if subnet.get('type') == 'static':
if not subnet.get('netmask'):
LOG.debug(
'Skipping IP %s, because there is no netmask',
subnet.get('address')
)
continue
LOG.debug('Configuring dev %s with %s / %s', device_name,
subnet.get('address'), subnet.get('netmask'))
self.interface_configurations[device_name] = {
'address': subnet.get('address'),
'netmask': subnet.get('netmask'),
'mtu': subnet.get('mtu') or interface.get('mtu'),
}
def _route_entries(self, settings):
routes = list(settings.iter_routes())
for interface in settings.iter_interfaces():
subnets = interface.get("subnets", [])
for subnet in subnets:
if subnet.get('type') != 'static':
continue
gateway = subnet.get('gateway')
if gateway and len(gateway.split('.')) == 4:
routes.append({
'network': '0.0.0.0',
'netmask': '0.0.0.0',
'gateway': gateway})
routes += subnet.get('routes', [])
for route in routes:
network = route.get('network')
if not network:
LOG.debug('Skipping a bad route entry')
continue
netmask = route.get('netmask')
gateway = route.get('gateway')
self.set_route(network, netmask, gateway)
def _resolve_conf(self, settings):
nameservers = settings.dns_nameservers
searchdomains = settings.dns_searchdomains
for interface in settings.iter_interfaces():
for subnet in interface.get("subnets", []):
if 'dns_nameservers' in subnet:
nameservers.extend(subnet['dns_nameservers'])
if 'dns_search' in subnet:
searchdomains.extend(subnet['dns_search'])
# Try to read the /etc/resolv.conf or just start from scratch if that
# fails.
try:
resolvconf = ResolvConf(util.load_file(subp.target_path(
self.target, self.resolv_conf_fn)))
resolvconf.parse()
except IOError:
util.logexc(LOG, "Failed to parse %s, use new empty file",
subp.target_path(self.target, self.resolv_conf_fn))
resolvconf = ResolvConf('')
resolvconf.parse()
# Add some nameservers
for server in nameservers:
try:
resolvconf.add_nameserver(server)
except ValueError:
util.logexc(LOG, "Failed to add nameserver %s", server)
# And add any searchdomains.
for domain in searchdomains:
try:
resolvconf.add_search_domain(domain)
except ValueError:
util.logexc(LOG, "Failed to add search domain %s", domain)
util.write_file(
subp.target_path(self.target, self.resolv_conf_fn),
str(resolvconf), 0o644)
def render_network_state(self, network_state, templates=None, target=None):
if target:
self.target = target
self._ifconfig_entries(settings=network_state)
self._route_entries(settings=network_state)
self._resolve_conf(settings=network_state)
self.write_config()
self.start_services(run=self._postcmds)
def dhcp_interfaces(self):
ic = self.interface_configurations.items
return [k for k, v in ic() if v == 'DHCP']
def start_services(self, run=False):
raise NotImplementedError()
def write_config(self, target=None):
raise NotImplementedError()
def set_gateway(self, gateway):
raise NotImplementedError()
def rename_interface(self, cur_name, device_name):
raise NotImplementedError()
def set_route(self, network, netmask, gateway):
raise NotImplementedError()
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