diff --git a/src/conf_mode/service_dhcp-server.py b/src/conf_mode/service_dhcp-server.py
index 3b9198ed0..e89448e2d 100755
--- a/src/conf_mode/service_dhcp-server.py
+++ b/src/conf_mode/service_dhcp-server.py
@@ -1,423 +1,430 @@
#!/usr/bin/env python3
#
# Copyright (C) 2018-2024 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
+from glob import glob
from ipaddress import ip_address
from ipaddress import ip_network
from netaddr import IPRange
from sys import exit
from vyos.config import Config
from vyos.pki import wrap_certificate
from vyos.pki import wrap_private_key
from vyos.template import render
from vyos.utils.dict import dict_search
from vyos.utils.dict import dict_search_args
from vyos.utils.file import chmod_775
+from vyos.utils.file import chown
from vyos.utils.file import makedir
from vyos.utils.file import write_file
from vyos.utils.process import call
from vyos.utils.network import interface_exists
from vyos.utils.network import is_subnet_connected
from vyos.utils.network import is_addr_assigned
from vyos import ConfigError
from vyos import airbag
airbag.enable()
ctrl_config_file = '/run/kea/kea-ctrl-agent.conf'
ctrl_socket = '/run/kea/dhcp4-ctrl-socket'
config_file = '/run/kea/kea-dhcp4.conf'
lease_file = '/config/dhcp/dhcp4-leases.csv'
+lease_file_glob = '/config/dhcp/dhcp4-leases*'
systemd_override = r'/run/systemd/system/kea-ctrl-agent.service.d/10-override.conf'
user_group = '_kea'
ca_cert_file = '/run/kea/kea-failover-ca.pem'
cert_file = '/run/kea/kea-failover.pem'
cert_key_file = '/run/kea/kea-failover-key.pem'
def dhcp_slice_range(exclude_list, range_dict):
"""
This function is intended to slice a DHCP range. What does it mean?
Lets assume we have a DHCP range from '192.0.2.1' to '192.0.2.100'
but want to exclude address '192.0.2.74' and '192.0.2.75'. We will
pass an input 'range_dict' in the format:
{'start' : '192.0.2.1', 'stop' : '192.0.2.100' }
and we will receive an output list of:
[{'start' : '192.0.2.1' , 'stop' : '192.0.2.73' },
{'start' : '192.0.2.76', 'stop' : '192.0.2.100' }]
The resulting list can then be used in turn to build the proper dhcpd
configuration file.
"""
output = []
# exclude list must be sorted for this to work
exclude_list = sorted(exclude_list)
range_start = range_dict['start']
range_stop = range_dict['stop']
range_last_exclude = ''
for e in exclude_list:
if (ip_address(e) >= ip_address(range_start)) and \
(ip_address(e) <= ip_address(range_stop)):
range_last_exclude = e
for e in exclude_list:
if (ip_address(e) >= ip_address(range_start)) and \
(ip_address(e) <= ip_address(range_stop)):
# Build new address range ending one address before exclude address
r = {
'start' : range_start,
'stop' : str(ip_address(e) -1)
}
# On the next run our address range will start one address after
# the exclude address
range_start = str(ip_address(e) + 1)
# on subsequent exclude addresses we can not
# append them to our output
if not (ip_address(r['start']) > ip_address(r['stop'])):
# Everything is fine, add range to result
output.append(r)
# Take care of last IP address range spanning from the last exclude
# address (+1) to the end of the initial configured range
if ip_address(e) == ip_address(range_last_exclude):
r = {
'start': str(ip_address(e) + 1),
'stop': str(range_stop)
}
if not (ip_address(r['start']) > ip_address(r['stop'])):
output.append(r)
else:
# if the excluded address was not part of the range, we simply return
# the entire ranga again
if not range_last_exclude:
if range_dict not in output:
output.append(range_dict)
return output
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['service', 'dhcp-server']
if not conf.exists(base):
return None
dhcp = conf.get_config_dict(base, key_mangling=('-', '_'),
no_tag_node_value_mangle=True,
get_first_key=True,
with_recursive_defaults=True)
if 'shared_network_name' in dhcp:
for network, network_config in dhcp['shared_network_name'].items():
if 'subnet' in network_config:
for subnet, subnet_config in network_config['subnet'].items():
# If exclude IP addresses are defined we need to slice them out of
# the defined ranges
if {'exclude', 'range'} <= set(subnet_config):
new_range_id = 0
new_range_dict = {}
for r, r_config in subnet_config['range'].items():
for slice in dhcp_slice_range(subnet_config['exclude'], r_config):
new_range_dict.update({new_range_id : slice})
new_range_id +=1
dhcp['shared_network_name'][network]['subnet'][subnet].update(
{'range' : new_range_dict})
if len(dhcp['high_availability']) == 1:
## only default value for mode is set, need to remove ha node
del dhcp['high_availability']
else:
if dict_search('high_availability.certificate', dhcp):
dhcp['pki'] = conf.get_config_dict(['pki'], key_mangling=('-', '_'), get_first_key=True, no_tag_node_value_mangle=True)
return dhcp
def verify(dhcp):
# bail out early - looks like removal from running config
if not dhcp or 'disable' in dhcp:
return None
# If DHCP is enabled we need one share-network
if 'shared_network_name' not in dhcp:
raise ConfigError('No DHCP shared networks configured.\n' \
'At least one DHCP shared network must be configured.')
# Inspect shared-network/subnet
listen_ok = False
subnets = []
shared_networks = len(dhcp['shared_network_name'])
disabled_shared_networks = 0
subnet_ids = []
# A shared-network requires a subnet definition
for network, network_config in dhcp['shared_network_name'].items():
if 'disable' in network_config:
disabled_shared_networks += 1
if 'subnet' not in network_config:
raise ConfigError(f'No subnets defined for {network}. At least one\n' \
'lease subnet must be configured.')
for subnet, subnet_config in network_config['subnet'].items():
if 'subnet_id' not in subnet_config:
raise ConfigError(f'Unique subnet ID not specified for subnet "{subnet}"')
if subnet_config['subnet_id'] in subnet_ids:
raise ConfigError(f'Subnet ID for subnet "{subnet}" is not unique')
subnet_ids.append(subnet_config['subnet_id'])
# All delivered static routes require a next-hop to be set
if 'static_route' in subnet_config:
for route, route_option in subnet_config['static_route'].items():
if 'next_hop' not in route_option:
raise ConfigError(f'DHCP static-route "{route}" requires router to be defined!')
# Check if DHCP address range is inside configured subnet declaration
if 'range' in subnet_config:
networks = []
for range, range_config in subnet_config['range'].items():
if not {'start', 'stop'} <= set(range_config):
raise ConfigError(f'DHCP range "{range}" start and stop address must be defined!')
# Start/Stop address must be inside network
for key in ['start', 'stop']:
if ip_address(range_config[key]) not in ip_network(subnet):
raise ConfigError(f'DHCP range "{range}" {key} address not within shared-network "{network}, {subnet}"!')
# Stop address must be greater or equal to start address
if ip_address(range_config['stop']) < ip_address(range_config['start']):
raise ConfigError(f'DHCP range "{range}" stop address must be greater or equal\n' \
'to the ranges start address!')
for network in networks:
start = range_config['start']
stop = range_config['stop']
if start in network:
raise ConfigError(f'Range "{range}" start address "{start}" already part of another range!')
if stop in network:
raise ConfigError(f'Range "{range}" stop address "{stop}" already part of another range!')
tmp = IPRange(range_config['start'], range_config['stop'])
networks.append(tmp)
# Exclude addresses must be in bound
if 'exclude' in subnet_config:
for exclude in subnet_config['exclude']:
if ip_address(exclude) not in ip_network(subnet):
raise ConfigError(f'Excluded IP address "{exclude}" not within shared-network "{network}, {subnet}"!')
# At least one DHCP address range or static-mapping required
if 'range' not in subnet_config and 'static_mapping' not in subnet_config:
raise ConfigError(f'No DHCP address range or active static-mapping configured\n' \
f'within shared-network "{network}, {subnet}"!')
if 'static_mapping' in subnet_config:
# Static mappings require just a MAC address (will use an IP from the dynamic pool if IP is not set)
used_ips = []
used_mac = []
used_duid = []
for mapping, mapping_config in subnet_config['static_mapping'].items():
if 'ip_address' in mapping_config:
if ip_address(mapping_config['ip_address']) not in ip_network(subnet):
raise ConfigError(f'Configured static lease address for mapping "{mapping}" is\n' \
f'not within shared-network "{network}, {subnet}"!')
if ('mac' not in mapping_config and 'duid' not in mapping_config) or \
('mac' in mapping_config and 'duid' in mapping_config):
raise ConfigError(f'Either MAC address or Client identifier (DUID) is required for '
f'static mapping "{mapping}" within shared-network "{network}, {subnet}"!')
if 'disable' not in mapping_config:
if mapping_config['ip_address'] in used_ips:
raise ConfigError(f'Configured IP address for static mapping "{mapping}" already exists on another static mapping')
used_ips.append(mapping_config['ip_address'])
if 'disable' not in mapping_config:
if 'mac' in mapping_config:
if mapping_config['mac'] in used_mac:
raise ConfigError(f'Configured MAC address for static mapping "{mapping}" already exists on another static mapping')
used_mac.append(mapping_config['mac'])
if 'duid' in mapping_config:
if mapping_config['duid'] in used_duid:
raise ConfigError(f'Configured DUID for static mapping "{mapping}" already exists on another static mapping')
used_duid.append(mapping_config['duid'])
# There must be one subnet connected to a listen interface.
# This only counts if the network itself is not disabled!
if 'disable' not in network_config:
if is_subnet_connected(subnet, primary=False):
listen_ok = True
# Subnets must be non overlapping
if subnet in subnets:
raise ConfigError(f'Configured subnets must be unique! Subnet "{subnet}"\n'
'defined multiple times!')
subnets.append(subnet)
# Check for overlapping subnets
net = ip_network(subnet)
for n in subnets:
net2 = ip_network(n)
if (net != net2):
if net.overlaps(net2):
raise ConfigError(f'Conflicting subnet ranges: "{net}" overlaps "{net2}"!')
# Prevent 'disable' for shared-network if only one network is configured
if (shared_networks - disabled_shared_networks) < 1:
raise ConfigError(f'At least one shared network must be active!')
if 'high_availability' in dhcp:
for key in ['name', 'remote', 'source_address', 'status']:
if key not in dhcp['high_availability']:
tmp = key.replace('_', '-')
raise ConfigError(f'DHCP high-availability requires "{tmp}" to be specified!')
if len({'certificate', 'ca_certificate'} & set(dhcp['high_availability'])) == 1:
raise ConfigError(f'DHCP secured high-availability requires both certificate and CA certificate')
if 'certificate' in dhcp['high_availability']:
cert_name = dhcp['high_availability']['certificate']
if cert_name not in dhcp['pki']['certificate']:
raise ConfigError(f'Invalid certificate specified for DHCP high-availability')
if not dict_search_args(dhcp['pki']['certificate'], cert_name, 'certificate'):
raise ConfigError(f'Invalid certificate specified for DHCP high-availability')
if not dict_search_args(dhcp['pki']['certificate'], cert_name, 'private', 'key'):
raise ConfigError(f'Missing private key on certificate specified for DHCP high-availability')
if 'ca_certificate' in dhcp['high_availability']:
ca_cert_name = dhcp['high_availability']['ca_certificate']
if ca_cert_name not in dhcp['pki']['ca']:
raise ConfigError(f'Invalid CA certificate specified for DHCP high-availability')
if not dict_search_args(dhcp['pki']['ca'], ca_cert_name, 'certificate'):
raise ConfigError(f'Invalid CA certificate specified for DHCP high-availability')
for address in (dict_search('listen_address', dhcp) or []):
if is_addr_assigned(address, include_vrf=True):
listen_ok = True
# no need to probe further networks, we have one that is valid
continue
else:
raise ConfigError(f'listen-address "{address}" not configured on any interface')
if not listen_ok:
raise ConfigError('None of the configured subnets have an appropriate primary IP address on any\n'
'broadcast interface configured, nor was there an explicit listen-address\n'
'configured for serving DHCP relay packets!')
if 'listen_address' in dhcp and 'listen_interface' in dhcp:
raise ConfigError(f'Cannot define listen-address and listen-interface at the same time')
for interface in (dict_search('listen_interface', dhcp) or []):
if not interface_exists(interface):
raise ConfigError(f'listen-interface "{interface}" does not exist')
return None
def generate(dhcp):
# bail out early - looks like removal from running config
if not dhcp or 'disable' in dhcp:
return None
dhcp['lease_file'] = lease_file
dhcp['machine'] = os.uname().machine
# Create directory for lease file if necessary
lease_dir = os.path.dirname(lease_file)
if not os.path.isdir(lease_dir):
makedir(lease_dir, group='vyattacfg')
chmod_775(lease_dir)
+ # Ensure correct permissions on lease files + backups
+ for file in glob(lease_file_glob):
+ chown(file, user=user_group, group='vyattacfg')
+
# Create lease file if necessary and let kea own it - 'kea-lfc' expects it that way
if not os.path.exists(lease_file):
write_file(lease_file, '', user=user_group, group=user_group, mode=0o644)
for f in [cert_file, cert_key_file, ca_cert_file]:
if os.path.exists(f):
os.unlink(f)
if 'high_availability' in dhcp:
if 'certificate' in dhcp['high_availability']:
cert_name = dhcp['high_availability']['certificate']
cert_data = dhcp['pki']['certificate'][cert_name]['certificate']
key_data = dhcp['pki']['certificate'][cert_name]['private']['key']
write_file(cert_file, wrap_certificate(cert_data), user=user_group, mode=0o600)
write_file(cert_key_file, wrap_private_key(key_data), user=user_group, mode=0o600)
dhcp['high_availability']['cert_file'] = cert_file
dhcp['high_availability']['cert_key_file'] = cert_key_file
if 'ca_certificate' in dhcp['high_availability']:
ca_cert_name = dhcp['high_availability']['ca_certificate']
ca_cert_data = dhcp['pki']['ca'][ca_cert_name]['certificate']
write_file(ca_cert_file, wrap_certificate(ca_cert_data), user=user_group, mode=0o600)
dhcp['high_availability']['ca_cert_file'] = ca_cert_file
render(systemd_override, 'dhcp-server/10-override.conf.j2', dhcp)
render(ctrl_config_file, 'dhcp-server/kea-ctrl-agent.conf.j2', dhcp, user=user_group, group=user_group)
render(config_file, 'dhcp-server/kea-dhcp4.conf.j2', dhcp, user=user_group, group=user_group)
return None
def apply(dhcp):
services = ['kea-ctrl-agent', 'kea-dhcp4-server', 'kea-dhcp-ddns-server']
if not dhcp or 'disable' in dhcp:
for service in services:
call(f'systemctl stop {service}.service')
if os.path.exists(config_file):
os.unlink(config_file)
return None
for service in services:
action = 'restart'
if service == 'kea-dhcp-ddns-server' and 'dynamic_dns_update' not in dhcp:
action = 'stop'
if service == 'kea-ctrl-agent' and 'high_availability' not in dhcp:
action = 'stop'
call(f'systemctl {action} {service}.service')
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)
diff --git a/src/conf_mode/service_dhcpv6-server.py b/src/conf_mode/service_dhcpv6-server.py
index add83eb0d..c7333dd3a 100755
--- a/src/conf_mode/service_dhcpv6-server.py
+++ b/src/conf_mode/service_dhcpv6-server.py
@@ -1,256 +1,263 @@
#!/usr/bin/env python3
#
# Copyright (C) 2018-2023 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
+from glob import glob
from ipaddress import ip_address
from ipaddress import ip_network
from sys import exit
from vyos.config import Config
from vyos.template import render
from vyos.utils.process import call
from vyos.utils.file import chmod_775
+from vyos.utils.file import chown
from vyos.utils.file import makedir
from vyos.utils.file import write_file
from vyos.utils.dict import dict_search
from vyos.utils.network import is_subnet_connected
from vyos import ConfigError
from vyos import airbag
airbag.enable()
config_file = '/run/kea/kea-dhcp6.conf'
ctrl_socket = '/run/kea/dhcp6-ctrl-socket'
lease_file = '/config/dhcp/dhcp6-leases.csv'
+lease_file_glob = '/config/dhcp/dhcp6-leases*'
user_group = '_kea'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['service', 'dhcpv6-server']
if not conf.exists(base):
return None
dhcpv6 = conf.get_config_dict(base, key_mangling=('-', '_'),
get_first_key=True,
no_tag_node_value_mangle=True)
return dhcpv6
def verify(dhcpv6):
# bail out early - looks like removal from running config
if not dhcpv6 or 'disable' in dhcpv6:
return None
# If DHCP is enabled we need one share-network
if 'shared_network_name' not in dhcpv6:
raise ConfigError('No DHCPv6 shared networks configured. At least '\
'one DHCPv6 shared network must be configured.')
# Inspect shared-network/subnet
subnets = []
subnet_ids = []
listen_ok = False
for network, network_config in dhcpv6['shared_network_name'].items():
# A shared-network requires a subnet definition
if 'subnet' not in network_config:
raise ConfigError(f'No DHCPv6 lease subnets configured for "{network}". '\
'At least one lease subnet must be configured for '\
'each shared network!')
for subnet, subnet_config in network_config['subnet'].items():
if 'subnet_id' not in subnet_config:
raise ConfigError(f'Unique subnet ID not specified for subnet "{subnet}"')
if subnet_config['subnet_id'] in subnet_ids:
raise ConfigError(f'Subnet ID for subnet "{subnet}" is not unique')
subnet_ids.append(subnet_config['subnet_id'])
if 'range' in subnet_config:
range6_start = []
range6_stop = []
for num, range_config in subnet_config['range'].items():
if 'start' in range_config:
start = range_config['start']
if 'stop' not in range_config:
raise ConfigError(f'Range stop address for start "{start}" is not defined!')
stop = range_config['stop']
# Start address must be inside network
if not ip_address(start) in ip_network(subnet):
raise ConfigError(f'Range start address "{start}" is not in subnet "{subnet}"!')
# Stop address must be inside network
if not ip_address(stop) in ip_network(subnet):
raise ConfigError(f'Range stop address "{stop}" is not in subnet "{subnet}"!')
# Stop address must be greater or equal to start address
if not ip_address(stop) >= ip_address(start):
raise ConfigError(f'Range stop address "{stop}" must be greater then or equal ' \
f'to the range start address "{start}"!')
# DHCPv6 range start address must be unique - two ranges can't
# start with the same address - makes no sense
if start in range6_start:
raise ConfigError(f'Conflicting DHCPv6 lease range: '\
f'Pool start address "{start}" defined multipe times!')
range6_start.append(start)
# DHCPv6 range stop address must be unique - two ranges can't
# end with the same address - makes no sense
if stop in range6_stop:
raise ConfigError(f'Conflicting DHCPv6 lease range: '\
f'Pool stop address "{stop}" defined multipe times!')
range6_stop.append(stop)
if 'prefix' in range_config:
prefix = range_config['prefix']
if not ip_network(prefix).subnet_of(ip_network(subnet)):
raise ConfigError(f'Range prefix "{prefix}" is not in subnet "{subnet}"')
# Prefix delegation sanity checks
if 'prefix_delegation' in subnet_config:
if 'prefix' not in subnet_config['prefix_delegation']:
raise ConfigError('prefix-delegation prefix not defined!')
for prefix, prefix_config in subnet_config['prefix_delegation']['prefix'].items():
if 'delegated_length' not in prefix_config:
raise ConfigError(f'Delegated IPv6 prefix length for "{prefix}" '\
f'must be configured')
if 'prefix_length' not in prefix_config:
raise ConfigError('Length of delegated IPv6 prefix must be configured')
if prefix_config['prefix_length'] > prefix_config['delegated_length']:
raise ConfigError('Length of delegated IPv6 prefix must be within parent prefix')
if 'excluded_prefix' in prefix_config:
if 'excluded_prefix_length' not in prefix_config:
raise ConfigError('Length of excluded IPv6 prefix must be configured')
prefix_len = prefix_config['prefix_length']
prefix_obj = ip_network(f'{prefix}/{prefix_len}')
excluded_prefix = prefix_config['excluded_prefix']
excluded_len = prefix_config['excluded_prefix_length']
excluded_obj = ip_network(f'{excluded_prefix}/{excluded_len}')
if excluded_len <= prefix_config['delegated_length']:
raise ConfigError('Excluded IPv6 prefix must be smaller than delegated prefix')
if not excluded_obj.subnet_of(prefix_obj):
raise ConfigError(f'Excluded prefix "{excluded_prefix}" does not exist in the prefix')
# Static mappings don't require anything (but check if IP is in subnet if it's set)
if 'static_mapping' in subnet_config:
for mapping, mapping_config in subnet_config['static_mapping'].items():
if 'ipv6_address' in mapping_config:
# Static address must be in subnet
if ip_address(mapping_config['ipv6_address']) not in ip_network(subnet):
raise ConfigError(f'static-mapping address for mapping "{mapping}" is not in subnet "{subnet}"!')
if ('mac' not in mapping_config and 'duid' not in mapping_config) or \
('mac' in mapping_config and 'duid' in mapping_config):
raise ConfigError(f'Either MAC address or Client identifier (DUID) is required for '
f'static mapping "{mapping}" within shared-network "{network}, {subnet}"!')
if 'option' in subnet_config:
if 'vendor_option' in subnet_config['option']:
if len(dict_search('option.vendor_option.cisco.tftp_server', subnet_config)) > 2:
raise ConfigError(f'No more then two Cisco tftp-servers should be defined for subnet "{subnet}"!')
# Subnets must be unique
if subnet in subnets:
raise ConfigError(f'DHCPv6 subnets must be unique! Subnet {subnet} defined multiple times!')
subnets.append(subnet)
# DHCPv6 requires at least one configured address range or one static mapping
# (FIXME: is not actually checked right now?)
# There must be one subnet connected to a listen interface if network is not disabled.
if 'disable' not in network_config:
if is_subnet_connected(subnet):
listen_ok = True
# DHCPv6 subnet must not overlap. ISC DHCP also complains about overlapping
# subnets: "Warning: subnet 2001:db8::/32 overlaps subnet 2001:db8:1::/32"
net = ip_network(subnet)
for n in subnets:
net2 = ip_network(n)
if (net != net2):
if net.overlaps(net2):
raise ConfigError('DHCPv6 conflicting subnet ranges: {0} overlaps {1}'.format(net, net2))
if not listen_ok:
raise ConfigError('None of the DHCPv6 subnets are connected to a subnet6 on '\
'this machine. At least one subnet6 must be connected such that '\
'DHCPv6 listens on an interface!')
return None
def generate(dhcpv6):
# bail out early - looks like removal from running config
if not dhcpv6 or 'disable' in dhcpv6:
return None
dhcpv6['lease_file'] = lease_file
dhcpv6['machine'] = os.uname().machine
# Create directory for lease file if necessary
lease_dir = os.path.dirname(lease_file)
if not os.path.isdir(lease_dir):
makedir(lease_dir, group='vyattacfg')
chmod_775(lease_dir)
+ # Ensure correct permissions on lease files + backups
+ for file in glob(lease_file_glob):
+ chown(file, user=user_group, group='vyattacfg')
+
# Create lease file if necessary and let kea own it - 'kea-lfc' expects it that way
if not os.path.exists(lease_file):
write_file(lease_file, '', user=user_group, group=user_group, mode=0o644)
render(config_file, 'dhcp-server/kea-dhcp6.conf.j2', dhcpv6, user=user_group, group=user_group)
return None
def apply(dhcpv6):
# bail out early - looks like removal from running config
service_name = 'kea-dhcp6-server.service'
if not dhcpv6 or 'disable' in dhcpv6:
# DHCP server is removed in the commit
call(f'systemctl stop {service_name}')
if os.path.exists(config_file):
os.unlink(config_file)
return None
call(f'systemctl restart {service_name}')
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)