#!/usr/bin/env python3 # # Copyright (C) 2018-2020 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 import re from copy import deepcopy from stat import S_IRUSR, S_IWUSR, S_IRGRP from sys import exit from vyos.config import Config from vyos.template import render from vyos.util import call, get_half_cpus from vyos.validate import is_ipv4 from vyos import ConfigError from vyos import airbag airbag.enable() ipoe_conf = '/run/accel-pppd/ipoe.conf' ipoe_chap_secrets = '/run/accel-pppd/ipoe.chap-secrets' default_config_data = { 'auth_mode': 'local', 'auth_interfaces': [], 'chap_secrets_file': ipoe_chap_secrets, # used in Jinja2 template 'interfaces': [], 'dnsv4': [], 'dnsv6': [], 'client_ipv6_pool': [], 'client_ipv6_delegate_prefix': [], 'radius_server': [], 'radius_acct_tmo': '3', 'radius_max_try': '3', 'radius_timeout': '3', 'radius_nas_id': '', 'radius_nas_ip': '', 'radius_source_address': '', 'radius_shaper_attr': '', 'radius_shaper_vendor': '', 'radius_dynamic_author': '', 'thread_cnt': get_half_cpus() } def get_config(): conf = Config() base_path = ['service', 'ipoe-server'] if not conf.exists(base_path): return None conf.set_level(base_path) ipoe = deepcopy(default_config_data) for interface in conf.list_nodes(['interface']): tmp = { 'mode': 'L2', 'name': interface, 'shared': '1', # may need a config option, can be dhcpv4 or up for unclassified pkts 'sess_start': 'dhcpv4', 'range': None, 'ifcfg': '1', 'vlan_mon': [] } conf.set_level(base_path + ['interface', interface]) if conf.exists(['network-mode']): tmp['mode'] = conf.return_value(['network-mode']) if conf.exists(['network']): mode = conf.return_value(['network']) if mode == 'vlan': tmp['shared'] = '0' if conf.exists(['vlan-id']): tmp['vlan_mon'] += conf.return_values(['vlan-id']) if conf.exists(['vlan-range']): tmp['vlan_mon'] += conf.return_values(['vlan-range']) if conf.exists(['client-subnet']): tmp['range'] = conf.return_value(['client-subnet']) ipoe['interfaces'].append(tmp) conf.set_level(base_path) if conf.exists(['name-server']): for name_server in conf.return_values(['name-server']): if is_ipv4(name_server): ipoe['dnsv4'].append(name_server) else: ipoe['dnsv6'].append(name_server) if conf.exists(['authentication', 'mode']): ipoe['auth_mode'] = conf.return_value(['authentication', 'mode']) if conf.exists(['authentication', 'interface']): for interface in conf.list_nodes(['authentication', 'interface']): tmp = { 'name': interface, 'mac': [] } for mac in conf.list_nodes(['authentication', 'interface', interface, 'mac-address']): client = { 'address': mac, 'rate_download': '', 'rate_upload': '', 'vlan_id': '' } conf.set_level(base_path + ['authentication', 'interface', interface, 'mac-address', mac]) if conf.exists(['rate-limit', 'download']): client['rate_download'] = conf.return_value(['rate-limit', 'download']) if conf.exists(['rate-limit', 'upload']): client['rate_upload'] = conf.return_value(['rate-limit', 'upload']) if conf.exists(['vlan-id']): client['vlan'] = conf.return_value(['vlan-id']) tmp['mac'].append(client) ipoe['auth_interfaces'].append(tmp) conf.set_level(base_path) # # authentication mode radius servers and settings if conf.exists(['authentication', 'mode', 'radius']): for server in conf.list_nodes(['authentication', 'radius', 'server']): radius = { 'server' : server, 'key' : '', 'fail_time' : 0, 'port' : '1812', 'acct_port' : '1813' } conf.set_level(base_path + ['authentication', 'radius', 'server', server]) if conf.exists(['fail-time']): radius['fail_time'] = conf.return_value(['fail-time']) if conf.exists(['port']): radius['port'] = conf.return_value(['port']) if conf.exists(['acct-port']): radius['acct_port'] = conf.return_value(['acct-port']) if conf.exists(['key']): radius['key'] = conf.return_value(['key']) if not conf.exists(['disable']): ipoe['radius_server'].append(radius) # # advanced radius-setting conf.set_level(base_path + ['authentication', 'radius']) if conf.exists(['acct-timeout']): ipoe['radius_acct_tmo'] = conf.return_value(['acct-timeout']) if conf.exists(['max-try']): ipoe['radius_max_try'] = conf.return_value(['max-try']) if conf.exists(['timeout']): ipoe['radius_timeout'] = conf.return_value(['timeout']) if conf.exists(['nas-identifier']): ipoe['radius_nas_id'] = conf.return_value(['nas-identifier']) if conf.exists(['nas-ip-address']): ipoe['radius_nas_ip'] = conf.return_value(['nas-ip-address']) if conf.exists(['source-address']): ipoe['radius_source_address'] = conf.return_value(['source-address']) # Dynamic Authorization Extensions (DOA)/Change Of Authentication (COA) if conf.exists(['dynamic-author']): dae = { 'port' : '', 'server' : '', 'key' : '' } if conf.exists(['dynamic-author', 'server']): dae['server'] = conf.return_value(['dynamic-author', 'server']) if conf.exists(['dynamic-author', 'port']): dae['port'] = conf.return_value(['dynamic-author', 'port']) if conf.exists(['dynamic-author', 'key']): dae['key'] = conf.return_value(['dynamic-author', 'key']) ipoe['radius_dynamic_author'] = dae conf.set_level(base_path) if conf.exists(['client-ipv6-pool', 'prefix']): for prefix in conf.list_nodes(['client-ipv6-pool', 'prefix']): tmp = { 'prefix': prefix, 'mask': '64' } if conf.exists(['client-ipv6-pool', 'prefix', prefix, 'mask']): tmp['mask'] = conf.return_value(['client-ipv6-pool', 'prefix', prefix, 'mask']) ipoe['client_ipv6_pool'].append(tmp) if conf.exists(['client-ipv6-pool', 'delegate']): for prefix in conf.list_nodes(['client-ipv6-pool', 'delegate']): tmp = { 'prefix': prefix, 'mask': '' } if conf.exists(['client-ipv6-pool', 'delegate', prefix, 'delegation-prefix']): tmp['mask'] = conf.return_value(['client-ipv6-pool', 'delegate', prefix, 'delegation-prefix']) ipoe['client_ipv6_delegate_prefix'].append(tmp) return ipoe def verify(ipoe): if not ipoe: return None if not ipoe['interfaces']: raise ConfigError('No IPoE interface configured') for interface in ipoe['interfaces']: if not interface['range']: raise ConfigError(f'No IPoE client subnet defined on interface "{ interface }"') if len(ipoe['dnsv4']) > 2: raise ConfigError('Not more then two IPv4 DNS name-servers can be configured') if len(ipoe['dnsv6']) > 3: raise ConfigError('Not more then three IPv6 DNS name-servers can be configured') if ipoe['auth_mode'] == 'radius': if len(ipoe['radius_server']) == 0: raise ConfigError('RADIUS authentication requires at least one server') for radius in ipoe['radius_server']: if not radius['key']: server = radius['server'] raise ConfigError(f'Missing RADIUS secret key for server "{ server }"') if ipoe['client_ipv6_delegate_prefix'] and not ipoe['client_ipv6_pool']: raise ConfigError('IPoE IPv6 deletate-prefix requires IPv6 prefix to be configured!') return None def generate(ipoe): if not ipoe: return None render(ipoe_conf, 'accel-ppp/ipoe.config.tmpl', ipoe, trim_blocks=True) if ipoe['auth_mode'] == 'local': render(ipoe_chap_secrets, 'accel-ppp/chap-secrets.ipoe.tmpl', ipoe) os.chmod(ipoe_chap_secrets, S_IRUSR | S_IWUSR | S_IRGRP) else: if os.path.exists(ipoe_chap_secrets): os.unlink(ipoe_chap_secrets) return None def apply(ipoe): if ipoe == None: call('systemctl stop accel-ppp@ipoe.service') for file in [ipoe_conf, ipoe_chap_secrets]: if os.path.exists(file): os.unlink(file) return None call('systemctl restart accel-ppp@ipoe.service') if __name__ == '__main__': try: c = get_config() verify(c) generate(c) apply(c) except ConfigError as e: print(e) exit(1)