diff options
| -rwxr-xr-x | src/conf_mode/interface-wireguard.py | 335 |
1 files changed, 168 insertions, 167 deletions
diff --git a/src/conf_mode/interface-wireguard.py b/src/conf_mode/interface-wireguard.py index 3fd29ad4d..0be8b7b0f 100755 --- a/src/conf_mode/interface-wireguard.py +++ b/src/conf_mode/interface-wireguard.py @@ -13,44 +13,41 @@ # # 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 sys import os import re -import syslog as sl import subprocess +from copy import deepcopy +from netifaces import interfaces -from vyos.config import Config from vyos import ConfigError +from vyos.config import Config +from vyos.configdict import list_diff from vyos.ifconfig import WireGuardIf -try: - ifname = str(os.environ['VYOS_TAGNODE_VALUE']) - intfc = WireGuardIf(ifname) -except KeyError: - print("Interface not specified") - sys.exit(1) - kdir = r'/config/auth/wireguard' + def _check_kmod(): if not os.path.exists('/sys/module/wireguard'): - sl.syslog(sl.LOG_NOTICE, "loading wirguard kmod") if os.system('sudo modprobe wireguard') != 0: - sl.syslog(sl.LOG_NOTICE, "modprobe wireguard failed") raise ConfigError("modprobe wireguard failed") def _migrate_default_keys(): if os.path.exists('{}/private.key'.format(kdir)) and not os.path.exists('{}/default/private.key'.format(kdir)): - sl.syslog(sl.LOG_NOTICE, "migrate keypair to default") old_umask = os.umask(0o027) location = '{}/default'.format(kdir) subprocess.call(['sudo mkdir -p ' + location], shell=True) subprocess.call(['sudo chgrp vyattacfg ' + location], shell=True) subprocess.call(['sudo chmod 750 ' + location], shell=True) - os.rename('{}/private.key'.format(kdir),'{}/private.key'.format(location)) - os.rename('{}/public.key'.format(kdir),'{}/public.key'.format(location)) + os.rename('{}/private.key'.format(kdir), + '{}/private.key'.format(location)) + os.rename('{}/public.key'.format(kdir), + '{}/public.key'.format(location)) os.umask(old_umask) @@ -59,47 +56,82 @@ def get_config(): if not c.exists('interfaces wireguard'): return None - config_data = { - ifname: { - 'addr': '', - 'descr': ifname, - 'lport': None, - 'status': 'exists', - 'state': 'enabled', - 'fwmark': 0x00, - 'mtu': 1420, - 'peer': {}, - 'pk' : '{}/default/private.key'.format(kdir) - } + dflt_cnf = { + 'intfc': '', + 'addr': [], + 'addr_remove': [], + 'descr': '', + 'lport': None, + 'delete': False, + 'state': 'up', + 'fwmark': 0x00, + 'mtu': 1420, + 'peer': {}, + 'peer_remove': [], + 'pk': '{}/default/private.key'.format(kdir) } + if os.getenv('VYOS_TAGNODE_VALUE'): + ifname = str(os.environ['VYOS_TAGNODE_VALUE']) + wg = deepcopy(dflt_cnf) + wg['intfc'] = ifname + wg['descr'] = ifname + else: + print("ERROR: VYOS_TAGNODE_VALUE undefined") + sys.exit(1) + c.set_level('interfaces wireguard') - if not c.exists_effective(ifname): - config_data[ifname]['status'] = 'create' + # interface removal state if not c.exists(ifname) and c.exists_effective(ifname): - config_data[ifname]['status'] = 'delete' - - if config_data[ifname]['status'] != 'delete': - if c.exists(ifname + ' address'): - config_data[ifname]['addr'] = c.return_values(ifname + ' address') - if c.exists(ifname + ' disable'): - config_data[ifname]['state'] = 'disable' - if c.exists(ifname + ' port'): - config_data[ifname]['lport'] = c.return_value(ifname + ' port') - if c.exists(ifname + ' fwmark'): - config_data[ifname]['fwmark'] = c.return_value(ifname + ' fwmark') - if c.exists(ifname + ' description'): - config_data[ifname]['descr'] = c.return_value( - ifname + ' description') - if c.exists(ifname + ' mtu'): - config_data[ifname]['mtu'] = c.return_value(ifname + ' mtu') - if c.exists(ifname + ' private-key'): - config_data[ifname]['pk'] = "{0}/{1}/private.key".format(kdir,c.return_value(ifname + ' private-key')) - if c.exists(ifname + ' peer'): - for p in c.list_nodes(ifname + ' peer'): - if not c.exists(ifname + ' peer ' + p + ' disable'): - config_data[ifname]['peer'].update( + wg['delete'] = True + + if not wg['delete']: + c.set_level('interfaces wireguard {}'.format(ifname)) + if c.exists('address'): + wg['addr'] = c.return_values('address') + + # determine addresses which need to be removed + eff_addr = c.return_effective_values('address') + wg['addr_remove'] = list_diff(eff_addr, wg['addr']) + + # ifalias description + if c.exists('description'): + wg['descr'] = c.return_value('description') + + # link state + if c.exists('disable'): + wg['state'] = 'down' + + # local port to listen on + if c.exists('port'): + wg['lport'] = c.return_value('port') + + # fwmark value + if c.exists('fwmark'): + wg['fwmark'] = c.return_value('fwmark') + + # mtu + if c.exists('mtu'): + wg['mtu'] = c.return_value('mtu') + + # private key + if c.exists('private-key'): + wg['pk'] = "{0}/{1}/private.key".format( + kdir, c.return_value('private-key')) + + # peer removal, wg identifies peers by its pubkey + peer_eff = c.list_effective_nodes('peer') + peer_rem = list_diff(peer_eff, c.list_nodes('peer')) + for p in peer_rem: + wg['peer_remove'].append( + c.return_effective_value('peer {} pubkey'.format(p))) + + # peer settings + if c.exists('peer'): + for p in c.list_nodes('peer'): + if not c.exists('peer ' + p + ' disable'): + wg['peer'].update( { p: { 'allowed-ips': [], @@ -108,46 +140,61 @@ def get_config(): } } ) - if c.exists(ifname + ' peer ' + p + ' pubkey'): - config_data[ifname]['peer'][p]['pubkey'] = c.return_value( - ifname + ' peer ' + p + ' pubkey') - if c.exists(ifname + ' peer ' + p + ' allowed-ips'): - config_data[ifname]['peer'][p]['allowed-ips'] = c.return_values( - ifname + ' peer ' + p + ' allowed-ips') - if c.exists(ifname + ' peer ' + p + ' endpoint'): - config_data[ifname]['peer'][p]['endpoint'] = c.return_value( - ifname + ' peer ' + p + ' endpoint') - if c.exists(ifname + ' peer ' + p + ' persistent-keepalive'): - config_data[ifname]['peer'][p]['persistent-keepalive'] = c.return_value( - ifname + ' peer ' + p + ' persistent-keepalive') - if c.exists(ifname + ' peer ' + p + ' preshared-key'): - config_data[ifname]['peer'][p]['psk'] = c.return_value( - ifname + ' peer ' + p + ' preshared-key') - - return config_data + # peer allowed-ips + if c.exists('peer ' + p + ' allowed-ips'): + wg['peer'][p]['allowed-ips'] = c.return_values( + 'peer ' + p + ' allowed-ips') + # peer endpoint + if c.exists('peer ' + p + ' endpoint'): + wg['peer'][p]['endpoint'] = c.return_value( + 'peer ' + p + ' endpoint') + # persistent-keepalive + if c.exists('peer ' + p + ' persistent-keepalive'): + wg['peer'][p]['persistent-keepalive'] = c.return_value( + 'peer ' + p + ' persistent-keepalive') + # preshared-key + if c.exists('peer ' + p + ' preshared-key'): + wg['peer'][p]['psk'] = c.return_value( + 'peer ' + p + ' preshared-key') + # peer pubkeys + key_eff = c.return_effective_value( + 'peer {peer} pubkey'.format(peer=p)) + key_cfg = c.return_value( + 'peer {peer} pubkey'.format(peer=p)) + wg['peer'][p]['pubkey'] = key_cfg + + # on a pubkey change we need to remove the pubkey first + # peers are identified by pubkey, so key update means + # peer removal and re-add + if key_eff != key_cfg and key_eff != None: + wg['peer_remove'].append(key_cfg) + + return wg + def verify(c): if not c: return None - if not os.path.exists(c[ifname]['pk']): + if not os.path.exists(c['pk']): raise ConfigError( "No keys found, generate them by executing: \'run generate wireguard [keypair|named-keypairs]\'") - if c[ifname]['status'] != 'delete': - if not c[ifname]['addr']: + if not c['delete']: + if not c['addr']: raise ConfigError("ERROR: IP address required") - if not c[ifname]['peer']: + if not c['peer']: raise ConfigError("ERROR: peer required") - for p in c[ifname]['peer']: - if not c[ifname]['peer'][p]['allowed-ips']: + for p in c['peer']: + if not c['peer'][p]['allowed-ips']: raise ConfigError("ERROR: allowed-ips required for peer " + p) - if not c[ifname]['peer'][p]['pubkey']: + if not c['peer'][p]['pubkey']: raise ConfigError("peer pubkey required for peer " + p) def apply(c): - # no wg config left, delete all wireguard devices, if any + # no wg configs left, remove all interface from system + # maybe move it into ifconfig.py if not c: net_devs = os.listdir('/sys/class/net/') for dev in net_devs: @@ -156,120 +203,74 @@ def apply(c): if re.search("DEVTYPE=wireguard", buf, re.I | re.M): wg_intf = re.sub("INTERFACE=", "", re.search( "INTERFACE=.*", buf, re.I | re.M).group(0)) - sl.syslog(sl.LOG_NOTICE, "removing interface " + wg_intf) subprocess.call( ['ip l d dev ' + wg_intf + ' >/dev/null'], shell=True) return None - # interface removal - if c[ifname]['status'] == 'delete': - sl.syslog(sl.LOG_NOTICE, "removing interface " + ifname) + # init wg class + intfc = WireGuardIf(c['intfc']) + + # single interface removal + if c['delete']: intfc.remove() return None - c_eff = Config() - c_eff.set_level('interfaces wireguard') + # remove IP addresses + for ip in c['addr_remove']: + intfc.del_addr(ip) - # interface state - if c[ifname]['state'] == 'disable': - sl.syslog(sl.LOG_NOTICE, "disable interface " + ifname) - intfc.set_state('down') - else: - if not intfc.get_state() == 'up': - sl.syslog(sl.LOG_NOTICE, "enable interface " + ifname) - intfc.set_state('up') - - # IP address - if not c_eff.exists_effective(ifname + ' address'): - for ip in c[ifname]['addr']: - intfc.add_addr(ip) - else: - addr_eff = c_eff.return_effective_values(ifname + ' address') - addr_rem = list(set(addr_eff) - set(c[ifname]['addr'])) - addr_add = list(set(c[ifname]['addr']) - set(addr_eff)) - - if len(addr_rem) != 0: - for ip in addr_rem: - sl.syslog( - sl.LOG_NOTICE, "remove IP address {0} from {1}".format(ip, ifname)) - intfc.del_addr(ip) - - if len(addr_add) != 0: - for ip in addr_add: - sl.syslog( - sl.LOG_NOTICE, "add IP address {0} to {1}".format(ip, ifname)) - intfc.add_addr(ip) - - # interface MTU - if c[ifname]['mtu'] != 1420: - intfc.set_mtu(int(c[ifname]['mtu'])) - else: - # default is set to 1420 in config_data - intfc.set_mtu(int(c[ifname]['mtu'])) - - # ifalias for snmp from description - descr_eff = c_eff.return_effective_value(ifname + ' description') - if descr_eff != c[ifname]['descr']: - intfc.set_alias(str(c[ifname]['descr'])) - - # peer deletion - peer_eff = c_eff.list_effective_nodes(ifname + ' peer') - peer_cnf = [] + # add IP addresses + for ip in c['addr']: + intfc.add_addr(ip) - try: - for p in c[ifname]['peer']: - peer_cnf.append(p) - except KeyError: - pass - - peer_rem = list(set(peer_eff) - set(peer_cnf)) - for p in peer_rem: - pkey = c_eff.return_effective_value(ifname + ' peer ' + p + ' pubkey') - intfc.remove_peer(pkey) - - # peer key update - for p in peer_eff: - if p in peer_cnf: - ekey = c_eff.return_effective_value( - ifname + ' peer ' + p + ' pubkey') - nkey = c[ifname]['peer'][p]['pubkey'] - if nkey != ekey: - sl.syslog( - sl.LOG_NOTICE, "peer {0} pubkey changed from {1} to {2} on interface {3}".format(p, ekey, nkey, ifname)) - intfc.remove_peer(ekey) - - intfc.config['private-key'] = c[ifname]['pk'] - for p in c[ifname]['peer']: - intfc.config['pubkey'] = str(c[ifname]['peer'][p]['pubkey']) - intfc.config['allowed-ips'] = (c[ifname]['peer'][p]['allowed-ips']) - - # listen-port - if c[ifname]['lport']: - intfc.config['port'] = c[ifname]['lport'] + # interface mtu + intfc.mtu = int(c['mtu']) + # ifalias for snmp from description + intfc.ifalias = str(c['descr']) + + # remove peers + if c['peer_remove']: + for pkey in c['peer_remove']: + intfc.remove_peer(pkey) + + # peer pubkey + # setting up the wg interface + intfc.config['private-key'] = c['pk'] + for p in c['peer']: + # peer pubkey + intfc.config['pubkey'] = str(c['peer'][p]['pubkey']) + # peer allowed-ips + intfc.config['allowed-ips'] = c['peer'][p]['allowed-ips'] + # local listen port + if c['lport']: + intfc.config['port'] = c['lport'] # fwmark - if c[ifname]['fwmark']: - intfc.config['fwmark'] = c[ifname]['fwmark'] - + if c['fwmark']: + intfc.config['fwmark'] = c['fwmark'] # endpoint - if c[ifname]['peer'][p]['endpoint']: - intfc.config['endpoint'] = c[ifname]['peer'][p]['endpoint'] + if c['peer'][p]['endpoint']: + intfc.config['endpoint'] = c['peer'][p]['endpoint'] # persistent-keepalive - if 'persistent-keepalive' in c[ifname]['peer'][p]: - intfc.config['keepalive'] = c[ifname][ - 'peer'][p]['persistent-keepalive'] + if 'persistent-keepalive' in c['peer'][p]: + intfc.config['keepalive'] = c['peer'][p]['persistent-keepalive'] + # maybe move it into ifconfig.py # preshared-key - needs to be read from a file - if 'psk' in c[ifname]['peer'][p]: + if 'psk' in c['peer'][p]: psk_file = '/config/auth/wireguard/psk' old_umask = os.umask(0o077) - open(psk_file, 'w').write(str(c[ifname]['peer'][p]['psk'])) + open(psk_file, 'w').write(str(c['peer'][p]['psk'])) os.umask(old_umask) intfc.config['psk'] = psk_file - intfc.update() + # interface state + intfc.state = c['state'] + + return None + if __name__ == '__main__': try: _check_kmod() |