diff options
Diffstat (limited to 'src/conf_mode/interfaces-macsec.py')
| -rwxr-xr-x | src/conf_mode/interfaces-macsec.py | 50 |
1 files changed, 26 insertions, 24 deletions
diff --git a/src/conf_mode/interfaces-macsec.py b/src/conf_mode/interfaces-macsec.py index 023fcdffc..0cd733294 100755 --- a/src/conf_mode/interfaces-macsec.py +++ b/src/conf_mode/interfaces-macsec.py @@ -43,6 +43,14 @@ airbag.enable() # XXX: wpa_supplicant works on the source interface wpa_suppl_conf = '/run/wpa_supplicant/{source_interface}.conf' +# Constants +## gcm-aes-128 requires a 128bit long key - 32 characters (string) = 16byte = 128bit +GCM_AES_128_LEN: int = 32 +GCM_128_KEY_ERROR = 'gcm-aes-128 requires a 128bit long key!' +## gcm-aes-256 requires a 256bit long key - 64 characters (string) = 32byte = 256bit +GCM_AES_256_LEN: int = 64 +GCM_256_KEY_ERROR = 'gcm-aes-256 requires a 256bit long key!' + def get_config(config=None): """ Retrive CLI config as dictionary. Dictionary can never be empty, as at least the @@ -96,18 +104,16 @@ def verify(macsec): # Logic to check static configuration if dict_search('security.static', macsec) != None: # tx-key must be defined - if dict_search('security.static.tx_key', macsec) == None: + if dict_search('security.static.key', macsec) == None: raise ConfigError('Static MACsec tx-key must be defined.') - tx_len = len(dict_search('security.static.tx_key', macsec)) + tx_len = len(dict_search('security.static.key', macsec)) - if dict_search('security.cipher', macsec) == 'gcm-aes-128' and tx_len != 32: - # gcm-aes-128 requires a 128bit long key - 32 characters (string) = 16byte = 128bit - raise ConfigError('gcm-aes-128 requires a 128bit long key!') + if dict_search('security.cipher', macsec) == 'gcm-aes-128' and tx_len != GCM_AES_128_LEN: + raise ConfigError(GCM_128_KEY_ERROR) - if dict_search('security.cipher', macsec) == 'gcm-aes-256' and tx_len != 64: - # gcm-aes-256 requires a 256bit long key - 64 characters (string) = 32byte = 256bit - raise ConfigError('gcm-aes-256 requires a 256bit long key!') + if dict_search('security.cipher', macsec) == 'gcm-aes-256' and tx_len != GCM_AES_256_LEN: + raise ConfigError(GCM_256_KEY_ERROR) # Make sure at least one peer is defined if 'peer' not in macsec['security']['static']: @@ -115,19 +121,17 @@ def verify(macsec): # For every enabled peer, make sure a MAC and rx-key is defined for peer, peer_config in macsec['security']['static']['peer'].items(): - if 'disable' not in peer_config and ('mac' not in peer_config or 'rx_key' not in peer_config): + if 'disable' not in peer_config and ('mac' not in peer_config or 'key' not in peer_config): raise ConfigError('Every enabled MACsec static peer must have a MAC address and rx-key defined.') # check rx-key length against cipher suite - rx_len = len(peer_config['rx_key']) + rx_len = len(peer_config['key']) - if dict_search('security.cipher', macsec) == 'gcm-aes-128' and rx_len != 32: - # gcm-aes-128 requires a 128bit long key - 32 characters (string) = 16byte = 128bit - raise ConfigError('gcm-aes-128 requires a 128bit long key!') + if dict_search('security.cipher', macsec) == 'gcm-aes-128' and rx_len != GCM_AES_128_LEN: + raise ConfigError(GCM_128_KEY_ERROR) - if dict_search('security.cipher', macsec) == 'gcm-aes-256' and rx_len != 64: - # gcm-aes-256 requires a 256bit long key - 64 characters (string) = 32byte = 256bit - raise ConfigError('gcm-aes-256 requires a 256bit long key!') + if dict_search('security.cipher', macsec) == 'gcm-aes-256' and rx_len != GCM_AES_256_LEN: + raise ConfigError(GCM_256_KEY_ERROR) # Logic to check MKA configuration else: @@ -136,13 +140,11 @@ def verify(macsec): cak_len = len(dict_search('security.mka.cak', macsec)) - if dict_search('security.cipher', macsec) == 'gcm-aes-128' and cak_len != 32: - # gcm-aes-128 requires a 128bit long key - 32 characters (string) = 16byte = 128bit - raise ConfigError('gcm-aes-128 requires a 128bit long key!') + if dict_search('security.cipher', macsec) == 'gcm-aes-128' and cak_len != GCM_AES_128_LEN: + raise ConfigError(GCM_128_KEY_ERROR) - elif dict_search('security.cipher', macsec) == 'gcm-aes-256' and cak_len != 64: - # gcm-aes-256 requires a 256bit long key - 64 characters (string) = 32byte = 256bit - raise ConfigError('gcm-aes-256 requires a 256bit long key!') + elif dict_search('security.cipher', macsec) == 'gcm-aes-256' and cak_len != GCM_AES_256_LEN: + raise ConfigError(GCM_256_KEY_ERROR) if 'source_interface' in macsec: # MACsec adds a 40 byte overhead (32 byte MACsec + 8 bytes VLAN 802.1ad @@ -186,8 +188,8 @@ def apply(macsec): i = MACsecIf(**macsec) i.update(macsec) - #Only reload/restart if not using static keys - if dict_search('security.static', macsec) == None: + # Only reload/restart if using MKA + if dict_search('security.mka.cak', macsec): if not is_systemd_service_running(systemd_service) or 'shutdown_required' in macsec: call(f'systemctl reload-or-restart {systemd_service}') |