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protocols_rip.py
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protocols_rip.py
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#!/usr/bin/env python3
#
# Copyright (C) 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 vyos import ConfigError
from vyos.config import Config
from vyos.util import call
from vyos.template import render
from vyos import airbag
airbag.enable()
config_file = r'/tmp/ripd.frr'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['protocols', 'rip']
rip_conf = {
'rip_conf' : False,
'default_distance' : [],
'default_originate' : False,
'old_rip' : {
'default_metric' : [],
'distribute' : {},
'neighbors' : {},
'networks' : {},
'net_distance' : {},
'passive_iface' : {},
'redist' : {},
'route' : {},
'ifaces' : {},
'timer_garbage' : 120,
'timer_timeout' : 180,
'timer_update' : 30
},
'rip' : {
'default_metric' : None,
'distribute' : {},
'neighbors' : {},
'networks' : {},
'net_distance' : {},
'passive_iface' : {},
'redist' : {},
'route' : {},
'ifaces' : {},
'timer_garbage' : 120,
'timer_timeout' : 180,
'timer_update' : 30
}
}
if not (conf.exists(base) or conf.exists_effective(base)):
return None
if conf.exists(base):
rip_conf['rip_conf'] = True
conf.set_level(base)
# Get default distance
if conf.exists_effective('default-distance'):
rip_conf['old_default_distance'] = conf.return_effective_value('default-distance')
if conf.exists('default-distance'):
rip_conf['default_distance'] = conf.return_value('default-distance')
# Get default information originate (originate default route)
if conf.exists_effective('default-information originate'):
rip_conf['old_default_originate'] = True
if conf.exists('default-information originate'):
rip_conf['default_originate'] = True
# Get default-metric
if conf.exists_effective('default-metric'):
rip_conf['old_rip']['default_metric'] = conf.return_effective_value('default-metric')
if conf.exists('default-metric'):
rip_conf['rip']['default_metric'] = conf.return_value('default-metric')
# Get distribute list interface old_rip
for dist_iface in conf.list_effective_nodes('distribute-list interface'):
# Set level 'distribute-list interface ethX'
conf.set_level(base + ['distribute-list', 'interface', dist_iface])
rip_conf['rip']['distribute'].update({
dist_iface : {
'iface_access_list_in': conf.return_effective_value('access-list in'.format(dist_iface)),
'iface_access_list_out': conf.return_effective_value('access-list out'.format(dist_iface)),
'iface_prefix_list_in': conf.return_effective_value('prefix-list in'.format(dist_iface)),
'iface_prefix_list_out': conf.return_effective_value('prefix-list out'.format(dist_iface))
}
})
# Access-list in old_rip
if conf.exists_effective('access-list in'.format(dist_iface)):
rip_conf['old_rip']['iface_access_list_in'] = conf.return_effective_value('access-list in'.format(dist_iface))
# Access-list out old_rip
if conf.exists_effective('access-list out'.format(dist_iface)):
rip_conf['old_rip']['iface_access_list_out'] = conf.return_effective_value('access-list out'.format(dist_iface))
# Prefix-list in old_rip
if conf.exists_effective('prefix-list in'.format(dist_iface)):
rip_conf['old_rip']['iface_prefix_list_in'] = conf.return_effective_value('prefix-list in'.format(dist_iface))
# Prefix-list out old_rip
if conf.exists_effective('prefix-list out'.format(dist_iface)):
rip_conf['old_rip']['iface_prefix_list_out'] = conf.return_effective_value('prefix-list out'.format(dist_iface))
conf.set_level(base)
# Get distribute list interface
for dist_iface in conf.list_nodes('distribute-list interface'):
# Set level 'distribute-list interface ethX'
conf.set_level(base + ['distribute-list', 'interface', dist_iface])
rip_conf['rip']['distribute'].update({
dist_iface : {
'iface_access_list_in': conf.return_value('access-list in'.format(dist_iface)),
'iface_access_list_out': conf.return_value('access-list out'.format(dist_iface)),
'iface_prefix_list_in': conf.return_value('prefix-list in'.format(dist_iface)),
'iface_prefix_list_out': conf.return_value('prefix-list out'.format(dist_iface))
}
})
# Access-list in
if conf.exists('access-list in'.format(dist_iface)):
rip_conf['rip']['iface_access_list_in'] = conf.return_value('access-list in'.format(dist_iface))
# Access-list out
if conf.exists('access-list out'.format(dist_iface)):
rip_conf['rip']['iface_access_list_out'] = conf.return_value('access-list out'.format(dist_iface))
# Prefix-list in
if conf.exists('prefix-list in'.format(dist_iface)):
rip_conf['rip']['iface_prefix_list_in'] = conf.return_value('prefix-list in'.format(dist_iface))
# Prefix-list out
if conf.exists('prefix-list out'.format(dist_iface)):
rip_conf['rip']['iface_prefix_list_out'] = conf.return_value('prefix-list out'.format(dist_iface))
conf.set_level(base + ['distribute-list'])
# Get distribute list, access-list in
if conf.exists_effective('access-list in'):
rip_conf['old_rip']['dist_acl_in'] = conf.return_effective_value('access-list in')
if conf.exists('access-list in'):
rip_conf['rip']['dist_acl_in'] = conf.return_value('access-list in')
# Get distribute list, access-list out
if conf.exists_effective('access-list out'):
rip_conf['old_rip']['dist_acl_out'] = conf.return_effective_value('access-list out')
if conf.exists('access-list out'):
rip_conf['rip']['dist_acl_out'] = conf.return_value('access-list out')
# Get ditstribute list, prefix-list in
if conf.exists_effective('prefix-list in'):
rip_conf['old_rip']['dist_prfx_in'] = conf.return_effective_value('prefix-list in')
if conf.exists('prefix-list in'):
rip_conf['rip']['dist_prfx_in'] = conf.return_value('prefix-list in')
# Get distribute list, prefix-list out
if conf.exists_effective('prefix-list out'):
rip_conf['old_rip']['dist_prfx_out'] = conf.return_effective_value('prefix-list out')
if conf.exists('prefix-list out'):
rip_conf['rip']['dist_prfx_out'] = conf.return_value('prefix-list out')
conf.set_level(base)
# Get network Interfaces
if conf.exists_effective('interface'):
rip_conf['old_rip']['ifaces'] = conf.return_effective_values('interface')
if conf.exists('interface'):
rip_conf['rip']['ifaces'] = conf.return_values('interface')
# Get neighbors
if conf.exists_effective('neighbor'):
rip_conf['old_rip']['neighbors'] = conf.return_effective_values('neighbor')
if conf.exists('neighbor'):
rip_conf['rip']['neighbors'] = conf.return_values('neighbor')
# Get networks
if conf.exists_effective('network'):
rip_conf['old_rip']['networks'] = conf.return_effective_values('network')
if conf.exists('network'):
rip_conf['rip']['networks'] = conf.return_values('network')
# Get network-distance old_rip
for net_dist in conf.list_effective_nodes('network-distance'):
rip_conf['old_rip']['net_distance'].update({
net_dist : {
'access_list' : conf.return_effective_value('network-distance {0} access-list'.format(net_dist)),
'distance' : conf.return_effective_value('network-distance {0} distance'.format(net_dist)),
}
})
# Get network-distance
for net_dist in conf.list_nodes('network-distance'):
rip_conf['rip']['net_distance'].update({
net_dist : {
'access_list' : conf.return_value('network-distance {0} access-list'.format(net_dist)),
'distance' : conf.return_value('network-distance {0} distance'.format(net_dist)),
}
})
# Get passive-interface
if conf.exists_effective('passive-interface'):
rip_conf['old_rip']['passive_iface'] = conf.return_effective_values('passive-interface')
if conf.exists('passive-interface'):
rip_conf['rip']['passive_iface'] = conf.return_values('passive-interface')
# Get redistribute for old_rip
for protocol in conf.list_effective_nodes('redistribute'):
rip_conf['old_rip']['redist'].update({
protocol : {
'metric' : conf.return_effective_value('redistribute {0} metric'.format(protocol)),
'route_map' : conf.return_effective_value('redistribute {0} route-map'.format(protocol)),
}
})
# Get redistribute
for protocol in conf.list_nodes('redistribute'):
rip_conf['rip']['redist'].update({
protocol : {
'metric' : conf.return_value('redistribute {0} metric'.format(protocol)),
'route_map' : conf.return_value('redistribute {0} route-map'.format(protocol)),
}
})
conf.set_level(base)
# Get route
if conf.exists_effective('route'):
rip_conf['old_rip']['route'] = conf.return_effective_values('route')
if conf.exists('route'):
rip_conf['rip']['route'] = conf.return_values('route')
# Get timers garbage
if conf.exists_effective('timers garbage-collection'):
rip_conf['old_rip']['timer_garbage'] = conf.return_effective_value('timers garbage-collection')
if conf.exists('timers garbage-collection'):
rip_conf['rip']['timer_garbage'] = conf.return_value('timers garbage-collection')
# Get timers timeout
if conf.exists_effective('timers timeout'):
rip_conf['old_rip']['timer_timeout'] = conf.return_effective_value('timers timeout')
if conf.exists('timers timeout'):
rip_conf['rip']['timer_timeout'] = conf.return_value('timers timeout')
# Get timers update
if conf.exists_effective('timers update'):
rip_conf['old_rip']['timer_update'] = conf.return_effective_value('timers update')
if conf.exists('timers update'):
rip_conf['rip']['timer_update'] = conf.return_value('timers update')
return rip_conf
def verify(rip):
if rip is None:
return None
# Check for network. If network-distance acl is set and distance not set
for net in rip['rip']['net_distance']:
if not rip['rip']['net_distance'][net]['distance']:
raise ConfigError(f"Must specify distance for network {net}")
def generate(rip):
if rip is None:
return None
render(config_file, 'frr/rip.frr.tmpl', rip)
return None
def apply(rip):
if rip is None:
return None
if os.path.exists(config_file):
call(f'vtysh -d ripd -f {config_file}')
os.remove(config_file)
else:
print("File {0} not found".format(config_file))
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)

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protocols_rip.py (11 KB)

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