diff options
Diffstat (limited to 'src/conf_mode/accel_l2tp.py')
| -rwxr-xr-x | src/conf_mode/accel_l2tp.py | 397 |
1 files changed, 0 insertions, 397 deletions
diff --git a/src/conf_mode/accel_l2tp.py b/src/conf_mode/accel_l2tp.py deleted file mode 100755 index 4ca5a858a..000000000 --- a/src/conf_mode/accel_l2tp.py +++ /dev/null @@ -1,397 +0,0 @@ -#!/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 sys -import os -import re -import jinja2 -import socket -import time - -from jinja2 import FileSystemLoader, Environment - -from vyos.config import Config -from vyos.defaults import directories as vyos_data_dir -from vyos import ConfigError -from vyos.util import run - - -pidfile = r'/var/run/accel_l2tp.pid' -l2tp_cnf_dir = r'/etc/accel-ppp/l2tp' -chap_secrets = l2tp_cnf_dir + '/chap-secrets' -l2tp_conf = l2tp_cnf_dir + '/l2tp.config' -# accel-pppd -d -c /etc/accel-ppp/l2tp/l2tp.config -p /var/run/accel_l2tp.pid - -# config path creation -if not os.path.exists(l2tp_cnf_dir): - os.makedirs(l2tp_cnf_dir) - -### -# inline helper functions -### -# depending on hw and threads, daemon needs a little to start -# if it takes longer than 100 * 0.5 secs, exception is being raised -# not sure if that's the best way to check it, but it worked so far quite well -### - - -def chk_con(): - cnt = 0 - s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) - while True: - try: - s.connect(("127.0.0.1", 2004)) - break - except ConnectionRefusedError: - time.sleep(0.5) - cnt += 1 - if cnt == 100: - raise("failed to start l2tp server") - break - - -def _accel_cmd(command): - return run(f'/usr/bin/accel-cmd -p 2004 {command}') - -### -# inline helper functions end -### - - -def get_config(): - c = Config() - if not c.exists('vpn l2tp remote-access '): - return None - - c.set_level('vpn l2tp remote-access') - config_data = { - 'authentication': { - 'mode': 'local', - 'local-users': { - }, - 'radiussrv': {}, - 'radiusopt': {}, - 'auth_proto': [], - 'mppe': 'prefer' - }, - 'outside_addr': '', - 'gateway_address': '10.255.255.0', - 'dns': [], - 'dnsv6': [], - 'wins': [], - 'client_ip_pool': None, - 'client_ip_subnets': [], - 'client_ipv6_pool': {}, - 'mtu': '1436', - 'ip6_column': '', - 'ip6_dp_column': '', - 'ppp_options': {}, - } - - ### general options ### - - if c.exists('dns-servers server-1'): - config_data['dns'].append(c.return_value('dns-servers server-1')) - if c.exists('dns-servers server-2'): - config_data['dns'].append(c.return_value('dns-servers server-2')) - if c.exists('dnsv6-servers'): - for dns6_server in c.return_values('dnsv6-servers'): - config_data['dnsv6'].append(dns6_server) - if c.exists('wins-servers server-1'): - config_data['wins'].append(c.return_value('wins-servers server-1')) - if c.exists('wins-servers server-2'): - config_data['wins'].append(c.return_value('wins-servers server-2')) - if c.exists('outside-address'): - config_data['outside_addr'] = c.return_value('outside-address') - - # auth local - if c.exists('authentication mode local'): - if c.exists('authentication local-users username'): - for usr in c.list_nodes('authentication local-users username'): - config_data['authentication']['local-users'].update( - { - usr: { - 'passwd': '', - 'state': 'enabled', - 'ip': '*', - 'upload': None, - 'download': None - } - } - ) - - if c.exists('authentication local-users username ' + usr + ' password'): - config_data['authentication']['local-users'][usr]['passwd'] = c.return_value( - 'authentication local-users username ' + usr + ' password') - if c.exists('authentication local-users username ' + usr + ' disable'): - config_data['authentication']['local-users'][usr]['state'] = 'disable' - if c.exists('authentication local-users username ' + usr + ' static-ip'): - config_data['authentication']['local-users'][usr]['ip'] = c.return_value( - 'authentication local-users username ' + usr + ' static-ip') - if c.exists('authentication local-users username ' + usr + ' rate-limit download'): - config_data['authentication']['local-users'][usr]['download'] = c.return_value( - 'authentication local-users username ' + usr + ' rate-limit download') - if c.exists('authentication local-users username ' + usr + ' rate-limit upload'): - config_data['authentication']['local-users'][usr]['upload'] = c.return_value( - 'authentication local-users username ' + usr + ' rate-limit upload') - - # authentication mode radius servers and settings - - if c.exists('authentication mode radius'): - config_data['authentication']['mode'] = 'radius' - rsrvs = c.list_nodes('authentication radius server') - for rsrv in rsrvs: - if c.return_value('authentication radius server ' + rsrv + ' fail-time') == None: - ftime = '0' - else: - ftime = str(c.return_value( - 'authentication radius server ' + rsrv + ' fail-time')) - if c.return_value('authentication radius-server ' + rsrv + ' req-limit') == None: - reql = '0' - else: - reql = str(c.return_value( - 'authentication radius server ' + rsrv + ' req-limit')) - - config_data['authentication']['radiussrv'].update( - { - rsrv: { - 'secret': c.return_value('authentication radius server ' + rsrv + ' key'), - 'fail-time': ftime, - 'req-limit': reql - } - } - ) - # Source ip address feature - if c.exists('authentication radius source-address'): - config_data['authentication']['radius_source_address'] = c.return_value( - 'authentication radius source-address') - - # advanced radius-setting - if c.exists('authentication radius acct-timeout'): - config_data['authentication']['radiusopt']['acct-timeout'] = c.return_value( - 'authentication radius acct-timeout') - if c.exists('authentication radius max-try'): - config_data['authentication']['radiusopt']['max-try'] = c.return_value( - 'authentication radius max-try') - if c.exists('authentication radius timeout'): - config_data['authentication']['radiusopt']['timeout'] = c.return_value( - 'authentication radius timeout') - if c.exists('authentication radius nas-identifier'): - config_data['authentication']['radiusopt']['nas-id'] = c.return_value( - 'authentication radius nas-identifier') - if c.exists('authentication radius dae-server'): - # Set default dae-server port if not defined - if c.exists('authentication radius dae-server port'): - dae_server_port = c.return_value( - 'authentication radius dae-server port') - else: - dae_server_port = "3799" - config_data['authentication']['radiusopt'].update( - { - 'dae-srv': { - 'ip-addr': c.return_value('authentication radius dae-server ip-address'), - 'port': dae_server_port, - 'secret': str(c.return_value('authentication radius dae-server secret')) - } - } - ) - # filter-id is the internal accel default if attribute is empty - # set here as default for visibility which may change in the future - if c.exists('authentication radius rate-limit enable'): - if not c.exists('authentication radius rate-limit attribute'): - config_data['authentication']['radiusopt']['shaper'] = { - 'attr': 'Filter-Id' - } - else: - config_data['authentication']['radiusopt']['shaper'] = { - 'attr': c.return_value('authentication radius rate-limit attribute') - } - if c.exists('authentication radius rate-limit vendor'): - config_data['authentication']['radiusopt']['shaper']['vendor'] = c.return_value( - 'authentication radius rate-limit vendor') - - if c.exists('client-ip-pool'): - if c.exists('client-ip-pool start') and c.exists('client-ip-pool stop'): - config_data['client_ip_pool'] = c.return_value( - 'client-ip-pool start') + '-' + re.search('[0-9]+$', c.return_value('client-ip-pool stop')).group(0) - - if c.exists('client-ip-pool subnet'): - config_data['client_ip_subnets'] = c.return_values( - 'client-ip-pool subnet') - - if c.exists('client-ipv6-pool prefix'): - config_data['client_ipv6_pool']['prefix'] = c.return_values( - 'client-ipv6-pool prefix') - config_data['ip6_column'] = 'ip6,' - if c.exists('client-ipv6-pool delegate-prefix'): - config_data['client_ipv6_pool']['delegate_prefix'] = c.return_values( - 'client-ipv6-pool delegate-prefix') - config_data['ip6_dp_column'] = 'ip6-dp,' - - if c.exists('mtu'): - config_data['mtu'] = c.return_value('mtu') - - # gateway address - if c.exists('gateway-address'): - config_data['gateway_address'] = c.return_value('gateway-address') - else: - # calculate gw-ip-address - if c.exists('client-ip-pool start'): - # use start ip as gw-ip-address - config_data['gateway_address'] = c.return_value( - 'client-ip-pool start') - elif c.exists('client-ip-pool subnet'): - # use first ip address from first defined pool - lst_ip = re.findall("\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}", c.return_values( - 'client-ip-pool subnet')[0]) - config_data['gateway_address'] = lst_ip[0] - - if c.exists('authentication require'): - auth_mods = {'pap': 'pap', 'chap': 'auth_chap_md5', - 'mschap': 'auth_mschap_v1', 'mschap-v2': 'auth_mschap_v2'} - for proto in c.return_values('authentication require'): - config_data['authentication']['auth_proto'].append( - auth_mods[proto]) - else: - config_data['authentication']['auth_proto'] = ['auth_mschap_v2'] - - if c.exists('authentication mppe'): - config_data['authentication']['mppe'] = c.return_value( - 'authentication mppe') - - if c.exists('idle'): - config_data['idle_timeout'] = c.return_value('idle') - - # LNS secret - if c.exists('lns shared-secret'): - config_data['lns_shared_secret'] = c.return_value('lns shared-secret') - - if c.exists('ccp-disable'): - config_data['ccp_disable'] = True - - # ppp_options - ppp_options = {} - if c.exists('ppp-options'): - if c.exists('ppp-options lcp-echo-failure'): - ppp_options['lcp-echo-failure'] = c.return_value( - 'ppp-options lcp-echo-failure') - if c.exists('ppp-options lcp-echo-interval'): - ppp_options['lcp-echo-interval'] = c.return_value( - 'ppp-options lcp-echo-interval') - - if len(ppp_options) != 0: - config_data['ppp_options'] = ppp_options - - return config_data - - -def verify(c): - if c == None: - return None - - if c['authentication']['mode'] == 'local': - if not c['authentication']['local-users']: - raise ConfigError( - 'l2tp-server authentication local-users required') - for usr in c['authentication']['local-users']: - if not c['authentication']['local-users'][usr]['passwd']: - raise ConfigError('user ' + usr + ' requires a password') - - if c['authentication']['mode'] == 'radius': - if len(c['authentication']['radiussrv']) == 0: - raise ConfigError('radius server required') - for rsrv in c['authentication']['radiussrv']: - if c['authentication']['radiussrv'][rsrv]['secret'] == None: - raise ConfigError('radius server ' + rsrv + - ' needs a secret configured') - - # check for the existence of a client ip pool - if not c['client_ip_pool'] and not c['client_ip_subnets']: - raise ConfigError( - "set vpn l2tp remote-access client-ip-pool requires subnet or start/stop IP pool") - - # check ipv6 - if 'delegate_prefix' in c['client_ipv6_pool'] and not 'prefix' in c['client_ipv6_pool']: - raise ConfigError( - "\"set vpn l2tp remote-access client-ipv6-pool prefix\" required for delegate-prefix ") - - if len(c['dnsv6']) > 3: - raise ConfigError("Maximum allowed dnsv6-servers addresses is 3") - - -def generate(c): - if c == None: - return None - - # Prepare Jinja2 template loader from files - tmpl_path = os.path.join(vyos_data_dir['data'], 'templates', 'l2tp') - fs_loader = FileSystemLoader(tmpl_path) - env = Environment(loader=fs_loader, trim_blocks=True) - - # accel-cmd reload doesn't work so any change results in a restart of the daemon - try: - if os.cpu_count() == 1: - c['thread_cnt'] = 1 - else: - c['thread_cnt'] = int(os.cpu_count()/2) - except KeyError: - if os.cpu_count() == 1: - c['thread_cnt'] = 1 - else: - c['thread_cnt'] = int(os.cpu_count()/2) - - tmpl = env.get_template('l2tp.config.tmpl') - config_text = tmpl.render(c) - open(l2tp_conf, 'w').write(config_text) - - if c['authentication']['local-users']: - tmpl = env.get_template('chap-secrets.tmpl') - chap_secrets_txt = tmpl.render(c) - old_umask = os.umask(0o077) - open(chap_secrets, 'w').write(chap_secrets_txt) - os.umask(old_umask) - - return c - - -def apply(c): - if c == None: - if os.path.exists(pidfile): - _accel_cmd('shutdown hard') - if os.path.exists(pidfile): - os.remove(pidfile) - return None - - if not os.path.exists(pidfile): - ret = run(f'/usr/sbin/accel-pppd -c {l2tp_conf} -p {pidfile} -d') - chk_con() - if ret != 0 and os.path.exists(pidfile): - os.remove(pidfile) - raise ConfigError('accel-pppd failed to start') - else: - # if gw ip changes, only restart doesn't work - _accel_cmd('restart') - - -if __name__ == '__main__': - try: - c = get_config() - verify(c) - generate(c) - apply(c) - except ConfigError as e: - print(e) - sys.exit(1) |