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Diffstat (limited to 'src/conf_mode/accel_pppoe.py')
| -rwxr-xr-x | src/conf_mode/accel_pppoe.py | 587 |
1 files changed, 587 insertions, 0 deletions
diff --git a/src/conf_mode/accel_pppoe.py b/src/conf_mode/accel_pppoe.py new file mode 100755 index 000000000..e1668d3c9 --- /dev/null +++ b/src/conf_mode/accel_pppoe.py @@ -0,0 +1,587 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2018 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 subprocess +import jinja2 +import socket +import time +import syslog as sl + +from vyos.config import Config +from vyos import ConfigError + +pidfile = r'/var/run/accel_pppoe.pid' +pppoe_cnf_dir = r'/etc/accel-ppp/pppoe' +chap_secrets = pppoe_cnf_dir + '/chap-secrets' +pppoe_conf = pppoe_cnf_dir + '/pppoe.config' +# accel-pppd -d -c /etc/accel-ppp/pppoe/pppoe.config -p /var/run/accel_pppoe.pid + +### config path creation +if not os.path.exists(pppoe_cnf_dir): + os.makedirs(pppoe_cnf_dir) + sl.syslog(sl.LOG_NOTICE, pppoe_cnf_dir + " created") + +pppoe_config = ''' +### generated by accel_pppoe.py ### +[modules] +log_syslog +pppoe +ippool +{% if client_ipv6_pool %} +ipv6pool +{% endif %} +chap-secrets +auth_pap +auth_chap_md5 +auth_mschap_v1 +auth_mschap_v2 +#pppd_compat +shaper +{% if snmp == 'enable' or snmp == 'enable-ma' %} +net-snmp +{% endif %} +{% if limits %} +connlimit +{% endif %} +{% if authentication['mode'] == 'radius' %} +radius +{% endif %} + +[core] +thread-count={{thread_cnt}} + +[log] +syslog=accel-pppoe,daemon +copy=1 +level=5 + +{% if snmp == 'enable-ma' %} +[snmp] +master=1 +{% endif -%} + +[client-ip-range] +disable + +[ip-pool] +{% if client_ip_pool %} +{{client_ip_pool}} +{% endif %} +gw-ip-address={{ppp_gw}} + +{% if client_ipv6_pool %} +[ipv6-pool] +{% for prfx in client_ipv6_pool['prefix']: %} +{{prfx}} +{% endfor %} +{% for prfx in client_ipv6_pool['delegate-prefix']: %} +delegate={{prfx}} +{% endfor %} +{% endif -%} + +{% if dns %} +[dns] +{% if dns[0] %} +dns1={{dns[0]}} +{% endif -%} +{% if dns[1] %} +dns2={{dns[1]}} +{% endif -%} +{% endif -%} + +{% if dnsv6 %} +[dnsv6] +{% for srv in dnsv6: %} +dns={{srv}} +{% endfor %} +{% endif -%} + +{% if wins %} +[wins] +{% if wins[0] %} +wins1={{wins[0]}} +{% endif %} +{% if wins[1] %} +wins2={{wins[1]}} +{% endif -%} +{% endif -%} + +{% if authentication['mode'] == 'local' %} +[chap-secrets] +chap-secrets=/etc/accel-ppp/pppoe/chap-secrets +{% endif -%} + +{% if authentication['mode'] == 'radius' %} +[radius] +{% for rsrv in authentication['radiussrv']: %} +server={{rsrv}},{{authentication['radiussrv'][rsrv]['secret']}},\ +req-limit={{authentication['radiussrv'][rsrv]['req-limit']}},\ +fail-time={{authentication['radiussrv'][rsrv]['fail-time']}} +{% endfor %} +{% if authentication['radiusopt']['timeout'] %} +timeout={{authentication['radiusopt']['timeout']}} +{% endif %} +{% if authentication['radiusopt']['acct-timeout'] %} +acct-timeout={{authentication['radiusopt']['acct-timeout']}} +{% endif %} +{% if authentication['radiusopt']['max-try'] %} +max-try={{authentication['radiusopt']['max-try']}} +{% endif %} +{% if authentication['radiusopt']['nas-id'] %} +nas-identifier={{authentication['radiusopt']['nas-id']}} +{% endif %} +{% if authentication['radiusopt']['nas-ip'] %} +nas-ip-address={{authentication['radiusopt']['nas-ip']}} +{% endif -%} +{% if authentication['radiusopt']['dae-srv'] %} +dae-server={{authentication['radiusopt']['dae-srv']['ip-addr']}}:\ +{{authentication['radiusopt']['dae-srv']['port']}},\ +{{authentication['radiusopt']['dae-srv']['secret']}} +{% endif -%} +gw-ip-address={{ppp_gw}} +verbose=1 + +{% if authentication['radiusopt']['shaper'] %} +[shaper] +verbose=1 +attr={{authentication['radiusopt']['shaper']['attr']}} +{% endif -%} +{% endif %} + +[ppp] +verbose=1 +check-ip=1 +single-session=replace +{% if ppp_options['ccp'] %} +ccp=1 +{% endif %} +{% if ppp_options['min-mtu'] %} +min-mtu={{ppp_options['min-mtu']}} +{% else %} +min-mtu={{mtu}} +{% endif %} +{% if ppp_options['mru'] %} +mru={{ppp_options['mru']}} +{% endif %} +{% if ppp_options['mppe'] %} +mppe={{ppp_options['mppe']}} +{% else %} +mppe=prefer +{% endif %} +{% if ppp_options['lcp-echo-interval'] %} +lcp-echo-interval={{ppp_options['lcp-echo-interval']}} +{% else %} +lcp-echo-interval=30 +{% endif %} +{% if ppp_options['lcp-echo-timeout'] %} +lcp-echo-timeout={{ppp_options['lcp-echo-timeout']}} +{% endif %} +{% if ppp_options['lcp-echo-failure'] %} +lcp-echo-failure={{ppp_options['lcp-echo-failure']}} +{% else %} +lcp-echo-failure=3 +{% endif %} +{% if ppp_options['ipv4'] %} +ipv4={{ppp_options['ipv4']}} +{% endif %} +{% if ppp_options['ipv6'] %} +ipv6={{ppp_options['ipv6']}} +{% if ppp_options['ipv6-intf-id'] %} +ipv6-intf-id={{ppp_options['ipv6-intf-id']}} +{% endif %} +{% if ppp_options['ipv6-peer-intf-id'] %} +ipv6-peer-intf-id={{ppp_options['ipv6-peer-intf-id']}} +{% endif %} +{% if ppp_options['ipv6-accept-peer-intf-id'] %} +ipv6-accept-peer-intf-id={{ppp_options['ipv6-accept-peer-intf-id']}} +{% endif %} +{% endif %} +mtu={{mtu}} + +[pppoe] +verbose=1 +{% if concentrator %} +ac-name={{concentrator}} +{% endif %} +{% if interface %} +{% for int in interface %} +interface={{int}} +{% endfor %} +{% endif %} +{% if svc_name %} +service-name={{svc_name}} +{% endif %} +pado-delay=0 +# maybe: called-sid, tr101, padi-limit etc. + +{% if limits %} +[connlimit] +limit={{limits['conn-limit']}} +burst={{limits['burst']}} +timeout={{limits['timeout']}} +{% endif %} + +[cli] +tcp=127.0.0.1:2001 +''' + +### pppoe chap secrets +chap_secrets_conf = ''' +# username server password acceptable local IP addresses shaper +{% for user in authentication['local-users'] %} +{% if authentication['local-users'][user]['state'] == 'enabled' %} +{% if (authentication['local-users'][user]['upload']) and (authentication['local-users'][user]['download']) %} +{{user}}\t*\t{{authentication['local-users'][user]['passwd']}}\t{{authentication['local-users'][user]['ip']}}\t\ +{{authentication['local-users'][user]['download']}}/{{authentication['local-users'][user]['upload']}} +{% else %} +{{user}}\t*\t{{authentication['local-users'][user]['passwd']}}\t{{authentication['local-users'][user]['ip']}} +{% endif %} +{% endif %} +{% endfor %} +''' +### +# 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", 2001)) + break + except ConnectionRefusedError: + time.sleep(0.5) + cnt +=1 + if cnt == 100: + raise("failed to start pppoe server") + break + +### chap_secrets file if auth mode local +def write_chap_secrets(c): + tmpl = jinja2.Template(chap_secrets_conf, trim_blocks=True) + chap_secrets_txt = tmpl.render(c) + old_umask = os.umask(0o077) + open(chap_secrets,'w').write(chap_secrets_txt) + os.umask(old_umask) + sl.syslog(sl.LOG_NOTICE, chap_secrets + ' written') + +def accel_cmd(cmd=''): + if not cmd: + return None + try: + ret = subprocess.check_output(['/usr/bin/accel-cmd',cmd]).decode().strip() + return ret + except: + return 1 + +### +# inline helper functions end +### + +def get_config(): + c = Config() + if not c.exists('service pppoe-server'): + return None + + config_data = { + 'concentrator' : 'vyos-ac', + 'authentication' : { + 'local-users' : { + }, + 'mode' : 'local', + 'radiussrv' : {}, + 'radiusopt' : {} + }, + 'client_ip_pool' : '', + 'client_ipv6_pool' : {}, + 'interface' : [], + 'ppp_gw' : '', + 'svc_name' : '', + 'dns' : [], + 'dnsv6' : [], + 'wins' : [], + 'mtu' : '1492', + 'ppp_options' : {}, + 'limits' : {}, + 'snmp' : 'disable' + } + + c.set_level('service pppoe-server') + ### general options + if c.exists('access-concentrator'): + config_data['concentrator'] = c.return_value('access-concentrator') + if c.exists('service-name'): + config_data['svc_name'] = c.return_value('service-name') + if c.exists('interface'): + config_data['interface'] = c.return_values('interface') + if c.exists('local-ip'): + config_data['ppp_gw'] = c.return_value('local-ip') + if c.exists('dns-servers'): + if c.return_value('dns-servers server-1'): + config_data['dns'].append(c.return_value('dns-servers server-1')) + if c.return_value('dns-servers server-2'): + config_data['dns'].append(c.return_value('dns-servers server-2')) + if c.exists('dnsv6-servers'): + if c.return_value('dnsv6-servers server-1'): + config_data['dnsv6'].append(c.return_value('dnsv6-servers server-1')) + if c.return_value('dnsv6-servers server-2'): + config_data['dnsv6'].append(c.return_value('dnsv6-servers server-2')) + if c.return_value('dnsv6-servers server-3'): + config_data['dnsv6'].append(c.return_value('dnsv6-servers server-3')) + if c.exists('wins-servers'): + if c.return_value('wins-servers server-1'): + config_data['wins'].append(c.return_value('wins-servers server-1')) + if c.return_value('wins-servers server-2'): + config_data['wins'].append(c.return_value('wins-servers server-2')) + if c.exists('client-ip-pool'): + if c.exists('client-ip-pool start'): + config_data['client_ip_pool'] = c.return_value('client-ip-pool start') + if c.exists('client-ip-pool stop'): + config_data['client_ip_pool'] += '-' + re.search('[0-9]+$', c.return_value('client-ip-pool stop')).group(0) + else: + raise ConfigError('client ip pool stop required') + if c.exists('client-ipv6-pool prefix'): + config_data['client_ipv6_pool']['prefix'] = c.return_values('client-ipv6-pool prefix') + if c.exists('client-ipv6-pool delegate-prefix'): + config_data['client_ipv6_pool']['delegate-prefix'] = c.return_values('client-ipv6-pool delegate-prefix') + if c.exists('limits'): + if c.exists('limits burst'): + config_data['limits']['burst'] = str(c.return_value('limits burst')) + if c.exists('limits timeout'): + config_data['limits']['timeout'] = str(c.return_value('limits timeout')) + if c.exists('limits connection-limit'): + config_data['limits']['conn-limit'] = str(c.return_value('limits connection-limit')) + if c.exists('snmp'): + config_data['snmp'] = 'enable' + if c.exists('snmp master-agent'): + config_data['snmp'] = 'enable-ma' + + #### authentication mode local + if not c.exists('authentication mode'): + raise ConfigError('pppoe-server authentication mode required') + + 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' : None, + '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 + ' secret'), + 'fail-time' : ftime, + 'req-limit' : reql + } + } + ) + + #### advanced radius-setting + if c.exists('authentication radius-settings'): + if c.exists('authentication radius-settings acct-timeout'): + config_data['authentication']['radiusopt']['acct-timeout'] = c.return_value('authentication radius-settings acct-timeout') + if c.exists('authentication radius-settings max-try'): + config_data['authentication']['radiusopt']['max-try'] = c.return_value('authentication radius-settings max-try') + if c.exists('authentication radius-settings timeout'): + config_data['authentication']['radiusopt']['timeout'] = c.return_value('authentication radius-settings timeout') + if c.exists('authentication radius-settings nas-identifier'): + config_data['authentication']['radiusopt']['nas-id'] = c.return_value('authentication radius-settings nas-identifier') + if c.exists('authentication radius-settings nas-ip-address'): + config_data['authentication']['radiusopt']['nas-ip'] = c.return_value('authentication radius-settings nas-ip-address') + if c.exists('authentication radius-settings dae-server'): + config_data['authentication']['radiusopt'].update( + { + 'dae-srv' : { + 'ip-addr' : c.return_value('authentication radius-settings dae-server ip-address'), + 'port' : c.return_value('authentication radius-settings dae-server port'), + 'secret' : str(c.return_value('authentication radius-settings 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-settings rate-limit enable'): + if not c.exists('authentication radius-settings rate-limit attribute'): + config_data['authentication']['radiusopt']['shaper'] = { + 'attr' : 'Filter-ID' + } + else: + config_data['authentication']['radiusopt']['shaper'] = { + 'attr' : c.return_value('authentication radius-settings rate-limit attribute') + } + + if c.exists('mtu'): + config_data['mtu'] = c.return_value('mtu') + + ### ppp_options + ppp_options = {} + if c.exists('ppp-options'): + if c.exists('ppp-options ccp'): + ppp_options['ccp'] = c.return_value('ppp-options ccp') + if c.exists('ppp-options min-mtu'): + ppp_options['min-mtu'] = c.return_value('ppp-options min-mtu') + if c.exists('ppp-options mru'): + ppp_options['mru'] = c.return_value('ppp-options mru') + if c.exists('ppp-options mppe deny'): + ppp_options['mppe'] = 'deny' + if c.exists('ppp-options mppe require'): + ppp_options['mppe'] = 'requre' + if c.exists('ppp-options mppe prefer'): + ppp_options['mppe'] = 'prefer' + 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 c.exists('ppp-options ipv4'): + ppp_options['ipv4'] = c.return_value('ppp-options ipv4') + if c.exists('ppp-options ipv6'): + ppp_options['ipv6'] = c.return_value('ppp-options ipv6') + if c.exists('ppp-options ipv6-accept-peer-intf-id'): + ppp_options['ipv6-accept-peer-intf-id']= 1 + if c.exists('ppp-options ipv6-intf-id'): + ppp_options['ipv6-intf-id'] = c.return_value('ppp-options ipv6-intf-id') + if c.exists('ppp-options ipv6-peer-intf-id'): + ppp_options['ipv6-peer-intf-id'] = c.return_value('ppp-options ipv6-peer-intf-id') + if c.exists('ppp-options lcp-echo-timeout'): + ppp_options['lcp-echo-timeout'] = c.return_value('ppp-options lcp-echo-timeout') + + 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('pppoe-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 up/download is set, check that both have a value + if c['authentication']['local-users'][usr]['upload']: + if not c['authentication']['local-users'][usr]['download']: + raise ConfigError('user ' + usr + ' requires download speed value') + if c['authentication']['local-users'][usr]['download']: + if not c['authentication']['local-users'][usr]['upload']: + raise ConfigError('user ' + usr + ' requires upload speed value') + + if not c['ppp_gw']: + raise ConfigError('pppoe-server local-ip required') + + 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') + +def generate(c): + if c == None: + return None + + ### 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 = jinja2.Template(pppoe_config, trim_blocks=True) + config_text = tmpl.render(c) + open(pppoe_conf,'w').write(config_text) + + if c['authentication']['local-users']: + write_chap_secrets(c) + + 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 = subprocess.call(['/usr/sbin/accel-pppd','-c',pppoe_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: + accel_cmd('restart') + sl.syslog(sl.LOG_NOTICE, "reloading config via daemon restart") + +if __name__ == '__main__': + try: + c = get_config() + verify(c) + generate(c) + apply(c) + except ConfigError as e: + print(e) + sys.exit(1) |