#!/usr/bin/env python3 # # Copyright (C) 2019-2020 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 from sys import exit from copy import deepcopy from netifaces import interfaces from vyos.config import Config from vyos.configdict import get_interface_dict from vyos.configverify import verify_source_interface from vyos.configverify import verify_vrf from vyos.configverify import verify_mtu_ipv6 from vyos.template import render from vyos.util import call from vyos import ConfigError from vyos import airbag airbag.enable() def get_config(config=None): """ Retrive CLI config as dictionary. Dictionary can never be empty, as at least the interface name will be added or a deleted flag """ if config: conf = config else: conf = Config() base = ['interfaces', 'pppoe'] pppoe = get_interface_dict(conf, base) return pppoe def verify(pppoe): if 'deleted' in pppoe: # bail out early return None verify_source_interface(pppoe) verify_vrf(pppoe) verify_mtu_ipv6(pppoe) if {'connect_on_demand', 'vrf'} <= set(pppoe): raise ConfigError('On-demand dialing and VRF can not be used at the same time') return None def generate(pppoe): # set up configuration file path variables where our templates will be # rendered into ifname = pppoe['ifname'] config_pppoe = f'/etc/ppp/peers/{ifname}' script_pppoe_pre_up = f'/etc/ppp/ip-pre-up.d/1000-vyos-pppoe-{ifname}' script_pppoe_ip_up = f'/etc/ppp/ip-up.d/1000-vyos-pppoe-{ifname}' script_pppoe_ip_down = f'/etc/ppp/ip-down.d/1000-vyos-pppoe-{ifname}' script_pppoe_ipv6_up = f'/etc/ppp/ipv6-up.d/1000-vyos-pppoe-{ifname}' config_wide_dhcp6c = f'/run/dhcp6c/dhcp6c.{ifname}.conf' config_files = [config_pppoe, script_pppoe_pre_up, script_pppoe_ip_up, script_pppoe_ip_down, script_pppoe_ipv6_up, config_wide_dhcp6c] if 'deleted' in pppoe or 'disable' in pppoe: # stop DHCPv6-PD client call(f'systemctl stop dhcp6c@{ifname}.service') # Hang-up PPPoE connection call(f'systemctl stop ppp@{ifname}.service') # Delete PPP configuration files for file in config_files: if os.path.exists(file): os.unlink(file) return None # Create PPP configuration files render(config_pppoe, 'pppoe/peer.tmpl', pppoe, permission=0o755) # Create script for ip-pre-up.d render(script_pppoe_pre_up, 'pppoe/ip-pre-up.script.tmpl', pppoe, permission=0o755) # Create script for ip-up.d render(script_pppoe_ip_up, 'pppoe/ip-up.script.tmpl', pppoe, permission=0o755) # Create script for ip-down.d render(script_pppoe_ip_down, 'pppoe/ip-down.script.tmpl', pppoe, permission=0o755) # Create script for ipv6-up.d render(script_pppoe_ipv6_up, 'pppoe/ipv6-up.script.tmpl', pppoe, permission=0o755) if 'dhcpv6_options' in pppoe and 'pd' in pppoe['dhcpv6_options']: # ipv6.tmpl relies on ifname - this should be made consitent in the # future better then double key-ing the same value render(config_wide_dhcp6c, 'dhcp-client/ipv6.tmpl', pppoe) return None def apply(pppoe): if 'deleted' in pppoe or 'disable' in pppoe: call('systemctl stop ppp@{ifname}.service'.format(**pppoe)) return None call('systemctl restart ppp@{ifname}.service'.format(**pppoe)) return None if __name__ == '__main__': try: c = get_config() verify(c) generate(c) apply(c) except ConfigError as e: print(e) exit(1)