diff options
Diffstat (limited to 'src/conf_mode/service_dhcp-server.py')
| -rwxr-xr-x | src/conf_mode/service_dhcp-server.py | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/src/conf_mode/service_dhcp-server.py b/src/conf_mode/service_dhcp-server.py index 7ebc560ba..2418c8faa 100755 --- a/src/conf_mode/service_dhcp-server.py +++ b/src/conf_mode/service_dhcp-server.py @@ -31,6 +31,7 @@ from vyos.utils.file import chmod_775 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 @@ -164,6 +165,7 @@ def verify(dhcp): 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(): @@ -175,6 +177,14 @@ def verify(dhcp): '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(): @@ -222,6 +232,7 @@ def verify(dhcp): 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 = [] 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): @@ -233,6 +244,11 @@ def verify(dhcp): raise ConfigError(f'Either MAC address or Client identifier (DUID) is required for ' f'static mapping "{mapping}" within shared-network "{network}, {subnet}"!') + if mapping_config['ip_address'] in used_ips: + raise ConfigError(f'Configured IP address for static mapping "{mapping}" exists on another static mapping') + + used_ips.append(mapping_config['ip_address']) + # 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: @@ -294,12 +310,18 @@ def verify(dhcp): 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): |