diff options
Diffstat (limited to 'src/conf_mode/dhcp_server.py')
| -rwxr-xr-x | src/conf_mode/dhcp_server.py | 55 |
1 files changed, 33 insertions, 22 deletions
diff --git a/src/conf_mode/dhcp_server.py b/src/conf_mode/dhcp_server.py index cdee72e09..a8cef5ebf 100755 --- a/src/conf_mode/dhcp_server.py +++ b/src/conf_mode/dhcp_server.py @@ -148,20 +148,35 @@ def verify(dhcp): 'At least one DHCP shared network must be configured.') # Inspect shared-network/subnet - failover_names = [] listen_ok = False subnets = [] + failover_ok = False + shared_networks = len(dhcp['shared_network_name']) + disabled_shared_networks = 0 + # 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 'static_route' in subnet_config and len(subnet_config['static_route']) != 2: - raise ConfigError('Missing DHCP static-route parameter(s):\n' \ - 'destination-subnet | router must be defined!') + # 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!') + + # DHCP failover needs at least one subnet that uses it + if 'enable_failover' in subnet_config: + if 'failover' not in dhcp: + raise ConfigError(f'Can not enable failover for "{subnet}" in "{network}".\n' \ + 'Failover is not configured globally!') + failover_ok = True # Check if DHCP address range is inside configured subnet declaration if 'range' in subnet_config: @@ -191,23 +206,6 @@ def verify(dhcp): tmp = IPRange(range_config['start'], range_config['stop']) networks.append(tmp) - if 'failover' in subnet_config: - for key in ['local_address', 'peer_address', 'name', 'status']: - if key not in subnet_config['failover']: - raise ConfigError(f'Missing DHCP failover parameter "{key}"!') - - # Failover names must be uniquie - if subnet_config['failover']['name'] in failover_names: - name = subnet_config['failover']['name'] - raise ConfigError(f'DHCP failover names must be unique:\n' \ - f'{name} has already been configured!') - failover_names.append(subnet_config['failover']['name']) - - # Failover requires start/stop ranges for pool - if 'range' not in subnet_config: - raise ConfigError(f'DHCP failover requires at least one start-stop range to be configured\n'\ - f'within shared-network "{network}, {subnet}" for using failover!') - # Exclude addresses must be in bound if 'exclude' in subnet_config: for exclude in subnet_config['exclude']: @@ -234,7 +232,7 @@ def verify(dhcp): # 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=True): + if is_subnet_connected(subnet, primary=False): listen_ok = True # Subnets must be non overlapping @@ -251,6 +249,19 @@ def verify(dhcp): if net.overlaps(net2): raise ConfigError('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 'failover' in dhcp: + if not failover_ok: + raise ConfigError('DHCP failover must be enabled for at least one subnet!') + + for key in ['name', 'remote', 'source_address', 'status']: + if key not in dhcp['failover']: + tmp = key.replace('_', '-') + raise ConfigError(f'DHCP failover requires "{tmp}" to be specified!') + for address in (dict_search('listen_address', dhcp) or []): if is_addr_assigned(address): listen_ok = True |