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|
#!/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 os
import sys
import jinja2
from vyos.config import Config
from vyos import ConfigError
config_dir = r'/etc/ddclient/'
config_file = config_dir + 'ddclient_{0}.conf'
config_tmpl = """
### Autogenerated by dynamic_dns.py ###
daemon=1m
syslog=yes
ssl=yes
pid=/var/run/ddclient/ddclient_{{ interface }}.pid
cache=/var/cache/ddclient/ddclient_{{ interface }}.cache
{% if web_url and web_skip -%}
use=web, web={{ web_url}}, web-skip={{ web_skip }}
{% else -%}
use=if, if={{ interface }}
{% endif -%}
{% for rfc in rfc2136 -%}
{% for record in rfc.record %}
# RFC2136 dynamic DNS configuration for {{ record }}.{{ rfc.zone }}
server={{ rfc.server }}
protocol=nsupdate
password={{ rfc.keyfile }}
ttl={{ rfc.ttl }}
zone={{ rfc.zone }}
{{ record }}
{% endfor %}
{% endfor -%}
{% for srv in service %}
{% for host in srv.host %}
# DynDNS provider configuration for {{ host }}
protocol={{ srv.protocol }}
max-interval=28d
login={{ srv.login }}
password='{{ srv.password }}'
{{ host }}
{% endfor %}
{% endfor %}
"""
# Mapping of service name to service protocol
default_service_protocol = {
'afraid': 'freedns',
'changeip': 'changeip',
'cloudflare': 'cloudflare',
'dnspark': 'dnspark',
'dslreports': 'dslreports1',
'dyndns': 'dyndns2',
'easydns': 'easydns',
'namecheap': 'namecheap',
'noip': 'noip',
'sitelutions': 'sitelutions',
'zoneedit': 'zoneedit1'
}
default_config_data = {
'interfaces': [],
}
def get_config():
dyndns = default_config_data
conf = Config()
if not conf.exists('service dns dynamic'):
return None
else:
conf.set_level('service dns dynamic')
for interface in conf.list_nodes('interface'):
node = {
'interface': interface,
'rfc2136': [],
'service': [],
'web_skip': '',
'web_url': ''
}
# set config level to e.g. "service dns dynamic interface eth0"
conf.set_level('service dns dynamic interface {0}'.format(interface))
# Handle RFC2136 - Dynamic Updates in the Domain Name System
for rfc2136 in conf.list_nodes('rfc2136'):
rfc = {
'name': rfc2136,
'keyfile': '',
'record': [],
'server': '',
'ttl': '600',
'zone': ''
}
if conf.exists('rfc2136 {0} key'.format(rfc2136)):
rfc['keyfile'] = conf.return_value('rfc2136 {0} key'.format(rfc2136))
if conf.exists('rfc2136 {0} record'.format(rfc2136)):
rfc['record'] = conf.return_values('rfc2136 {0} record'.format(rfc2136))
if conf.exists('rfc2136 {0} server'.format(rfc2136)):
rfc['server'] = conf.return_value('rfc2136 {0} server'.format(rfc2136))
if conf.exists('rfc2136 {0} ttl'.format(rfc2136)):
rfc['ttl'] = conf.return_value('rfc2136 {0} ttl'.format(rfc2136))
if conf.exists('rfc2136 {0} zone'.format(rfc2136)):
rfc['zone'] = conf.return_value('rfc2136 {0} zone'.format(rfc2136))
node['rfc2136'].append(rfc)
# Handle DynDNS service providers
for service in conf.list_nodes('service'):
srv = {
'provider': service,
'host': [],
'login': '',
'password': '',
'protocol': '',
'server': ''
}
# preload protocol from default service mapping
if service in default_service_protocol.keys():
srv['protocol'] = default_service_protocol[service]
if conf.exists('service {0} login'.format(service)):
srv['login'] = conf.return_value('service {0} login'.format(service))
if conf.exists('service {0} host-name'.format(service)):
srv['host'] = conf.return_values('service {0} host-name'.format(service))
if conf.exists('service {0} protocol'.format(service)):
srv['protocol'] = conf.return_value('service {0} protocol'.format(service))
if conf.exists('service {0} password'.format(service)):
srv['password'] = conf.return_value('service {0} password'.format(service))
if conf.exists('service {0} server'.format(service)):
srv['server'] = conf.return_value('service {0} server'.format(service))
node['service'].append(srv)
# Additional settings in CLI
if conf.exists('use-web skip'):
node['web_skip'] = conf.return_value('use-web skip')
if conf.exists('use-web url'):
node['web_url'] = conf.return_value('use-web url')
dyndns['interfaces'].append(node)
return dyndns
def verify(dyndns):
# bail out early - looks like removal from running config
if dyndns is None:
return None
return None
def generate(dyndns):
# bail out early - looks like removal from running config
if dyndns is None:
return None
if not os.path.exists(config_dir):
os.makedirs(config_dir)
for node in dyndns['interfaces']:
tmpl = jinja2.Template(config_tmpl)
config_text = tmpl.render(node)
with open(config_file.format(node['interface']), 'w') as f:
f.write(config_text)
return None
def apply(dns):
raise ConfigError("error")
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
sys.exit(1)
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