diff options
| -rw-r--r-- | debian/control | 1 | ||||
| -rw-r--r-- | interface-definitions/service-router-advert.xml.in | 266 | ||||
| -rwxr-xr-x | src/conf_mode/service-router-advert.py | 207 |
3 files changed, 474 insertions, 0 deletions
diff --git a/debian/control b/debian/control index 53c4130d7..366e8df94 100644 --- a/debian/control +++ b/debian/control @@ -77,6 +77,7 @@ Depends: python3, iperf, iperf3, frr, + radvd, dbus, hostapd (>= 0.6.8), wpasupplicant (>= 0.6.7), diff --git a/interface-definitions/service-router-advert.xml.in b/interface-definitions/service-router-advert.xml.in new file mode 100644 index 000000000..bd63b15a3 --- /dev/null +++ b/interface-definitions/service-router-advert.xml.in @@ -0,0 +1,266 @@ +<?xml version="1.0"?> +<interfaceDefinition> + <node name="service"> + <children> + <node name="router-advert" owner="${vyos_conf_scripts_dir}/service-router-advert.py"> + <properties> + <help>IPv6 Router Advertisements (RAs) service</help> + <priority>900</priority> + </properties> + <children> + <tagNode name="interface"> + <properties> + <help>Interface to send DDNS updates for [REQUIRED]</help> + <completionHelp> + <script>${vyos_completion_dir}/list_interfaces.py</script> + </completionHelp> + </properties> + <children> + <leafNode name="hop-limit"> + <properties> + <help>Set Hop Count field of the IP header for outgoing packets (default: 64)</help> + <valueHelp> + <format>1-255</format> + <description>Value should represent current diameter of the Internet</description> + </valueHelp> + <valueHelp> + <format>0</format> + <description>Unspecified (by this router)</description> + </valueHelp> + <constraint> + <validator name="numeric" argument="--range 0-255"/> + </constraint> + <constraintErrorMessage>Hop count must be between 0 and 255</constraintErrorMessage> + </properties> + </leafNode> + <leafNode name="default-lifetime"> + <properties> + <help>Lifetime associated with the default router in units of seconds</help> + <valueHelp> + <format>4-9000</format> + <description>Router Lifetime in seconds</description> + </valueHelp> + <valueHelp> + <format>0</format> + <description>Not a default router</description> + </valueHelp> + <constraint> + <validator name="numeric" argument="--range 0-0 --range 4-9000"/> + </constraint> + <constraintErrorMessage>Default router livetime bust be 0 or between 4 and 9000</constraintErrorMessage> + </properties> + </leafNode> + <leafNode name="default-preference"> + <properties> + <help>Preference associated with the default router,</help> + <completionHelp> + <list>low medium high</list> + </completionHelp> + <valueHelp> + <format>low</format> + <description>Default router has low preference</description> + </valueHelp> + <valueHelp> + <format>medium</format> + <description>Default router has medium preference (default)</description> + </valueHelp> + <valueHelp> + <format>high</format> + <description>Default router has high preference</description> + </valueHelp> + <constraint> + <regex>(low|medium|high)</regex> + </constraint> + <constraintErrorMessage>Default preference must be low, medium or high</constraintErrorMessage> + </properties> + </leafNode> + <leafNode name="dnssl"> + <properties> + <help>DNS search list</help> + <multi/> + </properties> + </leafNode> + <leafNode name="link-mtu"> + <properties> + <help>Link MTU value placed in RAs, exluded in RAs if unset</help> + <valueHelp> + <format>1280-9000</format> + <description>Link MTU value in RAs</description> + </valueHelp> + <constraint> + <validator name="numeric" argument="--range 1280-9000"/> + </constraint> + <constraintErrorMessage>Link MTU must be between 1280 and 9000</constraintErrorMessage> + </properties> + </leafNode> + <leafNode name="managed-flag"> + <properties> + <help>Hosts use the administered (stateful) protocol for address autoconfiguration in addition to any addresses autoconfigured using SLAAC</help> + <valueless/> + </properties> + </leafNode> + <node name="interval"> + <properties> + <help>Set interval between unsolicited multicast RAs</help> + </properties> + <children> + <leafNode name="max"> + <properties> + <help>Maximum interval between unsolicited multicast RAs (default: 600)</help> + <valueHelp> + <format>4-1800</format> + <description>Maximum interval in seconds</description> + </valueHelp> + <constraint> + <validator name="numeric" argument="--range 4-1800"/> + </constraint> + <constraintErrorMessage>Maximum interval must be between 4 and 1800 seconds</constraintErrorMessage> + </properties> + </leafNode> + <leafNode name="min"> + <properties> + <help>Minimum interval between unsolicited multicast RAs</help> + <valueHelp> + <format>3-1350</format> + <description>Minimum interval in seconds</description> + </valueHelp> + <constraint> + <validator name="numeric" argument="--range 3-1350"/> + </constraint> + <constraintErrorMessage>Minimum interval must be between 3 and 1350 seconds</constraintErrorMessage> + </properties> + </leafNode> + </children> + </node> + <leafNode name="name-server"> + <properties> + <help>IPv6 address of recursive DNS server</help> + <valueHelp> + <format>ipv6</format> + <description>IPv6 address of DNS name server</description> + </valueHelp> + <constraint> + <validator name="ipv6-address"/> + </constraint> + <multi/> + </properties> + </leafNode> + <leafNode name="other-config-flag"> + <properties> + <help>Hosts use the administered (stateful) protocol for autoconfiguration of other (non-address) information</help> + <valueless/> + </properties> + </leafNode> + <tagNode name="prefix"> + <properties> + <help>IPv6 prefix to be advertised in Router Advertisements (RAs)</help> + <valueHelp> + <format>ipv6net</format> + <description>IPv6 prefix to be advertized</description> + </valueHelp> + <constraint> + <validator name="ipv6-prefix"/> + </constraint> + </properties> + <children> + <leafNode name="no-autonomous-flag"> + <properties> + <help>Prefix can not be used for stateless address auto-configuration</help> + <valueless/> + </properties> + </leafNode> + <leafNode name="no-on-link-flag"> + <properties> + <help>Prefix can not be used for on-link determination</help> + <valueless/> + </properties> + </leafNode> + <leafNode name="preferred-lifetime"> + <properties> + <help>Time in seconds that the prefix will remain preferred (default 4 hours)</help> + <completionHelp> + <list>infinity</list> + </completionHelp> + <valueHelp> + <format>0-4294967295</format> + <description>Time in seconds that the prefix will remain preferred</description> + </valueHelp> + <valueHelp> + <format>infinity</format> + <description>Prefix will remain preferred forever</description> + </valueHelp> + <constraint> + <validator name="numeric" argument="--range 0-4294967295"/> + <regex>(infinity)</regex> + </constraint> + </properties> + </leafNode> + <leafNode name="valid-lifetime"> + <properties> + <help>Time in seconds that the prefix will remain valid (default: 30 days)</help> + <completionHelp> + <list>infinity</list> + </completionHelp> + <valueHelp> + <format>1-4294967295</format> + <description>Time in seconds that the prefix will remain valid</description> + </valueHelp> + <valueHelp> + <format>infinity</format> + <description>Prefix will remain preferred forever</description> + </valueHelp> + <constraint> + <validator name="numeric" argument="--range 0-4294967295"/> + <regex>(infinity)</regex> + </constraint> + </properties> + </leafNode> + </children> + </tagNode> + <leafNode name="reachable-time"> + <properties> + <help>Time, in milliseconds, that a node assumes a neighbor is reachable after having received a reachability confirmation</help> + <valueHelp> + <format>1-3600000</format> + <description>Reachable Time value in RAs (in milliseconds)</description> + </valueHelp> + <valueHelp> + <format>0</format> + <description>Reachable Time unspecified by this router</description> + </valueHelp> + <constraint> + <validator name="numeric" argument="--range 0-0 --range 1-3600000"/> + </constraint> + <constraintErrorMessage>Reachable time must be 0 or between 1 and 3600000 milliseconds</constraintErrorMessage> + </properties> + </leafNode> + <leafNode name="retrans-timer"> + <properties> + <help>Time in milliseconds between retransmitted Neighbor Solicitation messages</help> + <valueHelp> + <format>1-4294967295</format> + <description>Minimum interval in milliseconds</description> + </valueHelp> + <valueHelp> + <format>0</format> + <description>Time, in milliseconds, between retransmitted Neighbor Solicitation messages</description> + </valueHelp> + <constraint> + <validator name="numeric" argument="--range 0-0 --range 1-4294967295"/> + </constraint> + <constraintErrorMessage>Retransmit interval must be 0 or between 1 and 4294967295 milliseconds</constraintErrorMessage> + </properties> + </leafNode> + <leafNode name="no-send-advert"> + <properties> + <help>Do not send router adverts</help> + <valueless/> + </properties> + </leafNode> + </children> + </tagNode> + </children> + </node> + </children> + </node> +</interfaceDefinition> diff --git a/src/conf_mode/service-router-advert.py b/src/conf_mode/service-router-advert.py new file mode 100755 index 000000000..87a4e9d92 --- /dev/null +++ b/src/conf_mode/service-router-advert.py @@ -0,0 +1,207 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2018-2019 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 sys +import jinja2 + +from stat import S_IRUSR, S_IWUSR, S_IRGRP +from vyos.config import Config +from vyos import ConfigError + +config_file = r'/etc/radvd.conf' + +config_tmpl = """ +### Autogenerated by service-ipv6-ra.py ### + +{% for i in interfaces -%} +interface {{ i.name }} { + IgnoreIfMissing on; + AdvDefaultPreference {{ i.default_preference }}; + AdvManagedFlag {{ i.managed_flag }}; + MaxRtrAdvInterval {{ i.interval_max }}; +{% if i.interval_min %} + MinRtrAdvInterval {{ i.interval_min }}; +{% endif %} + AdvReachableTime {{ i.reachable_time }}; + AdvIntervalOpt {{ i.send_advert }}; + AdvSendAdvert {{ i.send_advert }}; +{% if i.default_lifetime %} + AdvDefaultLifetime {{ i.default_lifetime }}; +{% endif %} + AdvLinkMTU {{ i.link_mtu }}; + AdvOtherConfigFlag {{ i.other_config_flag }}; + AdvRetransTimer {{ i.retrans_timer }}; + AdvCurHopLimit {{ i.hop_limit }}; +{% for p in i.prefixes %} + prefix {{ p.prefix }} { + AdvAutonomous {{ p.autonomous_flag }}; + AdvValidLifetime {{ p.valid_lifetime }}; + AdvOnLink {{ p.on_link }}; + AdvPreferredLifetime {{ p.preferred_lifetime }}; + }; +{% endfor %} +{% if i.name_server %} + RDNSS {{ i.name_server | join(" ") }} { + }; +{% endif %} +}; +{% endfor -%} +""" + +default_config_data = { + 'interfaces': [] +} + +def get_config(): + rtradv = default_config_data + conf = Config() + base_level = ['service', 'router-advert'] + + if not conf.exists(base_level): + return rtradv + + for interface in conf.list_nodes(base_level + ['interface']): + intf = { + 'name': interface, + 'hop_limit' : '64', + 'default_lifetime': '', + 'default_preference': 'medium', + 'dnssl': [], + 'link_mtu': '0', + 'managed_flag': 'off', + 'interval_max': '600', + 'interval_min': '', + 'name_server': [], + 'other_config_flag': 'off', + 'prefixes' : [], + 'reachable_time': '0', + 'retrans_timer': '0', + 'send_advert': 'on' + } + + # set config level first to reduce boilerplate code + conf.set_level(base_level + ['interface', interface]) + + if conf.exists(['hop-limit']): + intf['hop_limit'] = conf.return_value(['hop-limit']) + + if conf.exists(['default-lifetim']): + intf['default_lifetime'] = conf.return_value(['default-lifetim']) + + if conf.exists(['default-preference']): + intf['default_preference'] = conf.return_value(['default-preference']) + + if conf.exists(['dnssl']): + intf['dnssl'] = conf.return_values(['dnssl']) + + if conf.exists(['link-mtu']): + intf['link_mtu'] = conf.return_value(['link-mtu']) + + if conf.exists(['managed-flag']): + intf['managed_flag'] = 'on' + + if conf.exists(['interval', 'max']): + intf['interval_max'] = conf.return_value(['interval', 'max']) + + if conf.exists(['interval', 'min']): + intf['interval_min'] = conf.return_value(['interval', 'min']) + + if conf.exists(['name-server']): + intf['name_server'] = conf.return_values(['name-server']) + + if conf.exists(['other-config-flag']): + intf['other_config_flag'] = 'on' + + if conf.exists(['reachable-time']): + intf['reachable_time'] = conf.return_value(['reachable-time']) + + if conf.exists(['retrans-timer']): + intf['retrans_timer'] = conf.return_value(['retrans-timer']) + + if conf.exists(['no-send-advert']): + intf['send_advert'] = 'off' + + for prefix in conf.list_nodes(['prefix']): + tmp = { + 'prefix' : prefix, + 'autonomous_flag' : 'on', + 'on_link' : 'on', + 'preferred_lifetime': '14400', + 'valid_lifetime' : '2592000' + + } + + # set config level first to reduce boilerplate code + conf.set_level(base_level + ['interface', interface, 'prefix', prefix]) + + if conf.exists(['no-autonomous-flag']): + tmp['autonomous_flag'] = 'off' + + if conf.exists(['no-on-link-flag']): + tmp['on_link'] = 'off' + + if conf.exists(['preferred-lifetime']): + tmp['preferred_lifetime'] = conf.return_value(['preferred-lifetime']) + + if conf.exists(['valid-lifetime']): + tmp['valid_lifetime'] = conf.return_value(['valid-lifetime']) + + intf['prefixes'].append(tmp) + + rtradv['interfaces'].append(intf) + + return rtradv + +def verify(rtradv): + return None + +def generate(rtradv): + if not rtradv['interfaces']: + return None + + tmpl = jinja2.Template(config_tmpl, trim_blocks=True) + config_text = tmpl.render(rtradv) + with open(config_file, 'w') as f: + f.write(config_text) + + # adjust file permissions of new configuration file + if os.path.exists(config_file): + os.chmod(config_file, S_IRUSR | S_IWUSR | S_IRGRP) + + return None + +def apply(rtradv): + if not rtradv['interfaces']: + # bail out early - looks like removal from running config + os.system('sudo systemctl stop radvd.service') + if os.path.exists(config_file): + os.unlink(config_file) + + return None + + os.system('sudo systemctl restart radvd.service') + return None + +if __name__ == '__main__': + try: + c = get_config() + verify(c) + generate(c) + apply(c) + except ConfigError as e: + print(e) + sys.exit(1) |