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authorChristian Poessinger <christian@poessinger.com>2021-04-20 21:13:11 +0200
committerChristian Poessinger <christian@poessinger.com>2021-04-20 21:13:11 +0200
commit78f647485d337e63a4664c89481e03c2a15b35e9 (patch)
treeb2e80bf8d23045d2844379255442ef95f8009ca6 /src/conf_mode/protocols_bgp.py
parent2fe39c3f4d7408509273c9e2ac400437aba9616f (diff)
downloadvyos-1x-78f647485d337e63a4664c89481e03c2a15b35e9.tar.gz
vyos-1x-78f647485d337e63a4664c89481e03c2a15b35e9.zip
bgp: remove references to new XML/Python implementation not yet available in equuleus
Diffstat (limited to 'src/conf_mode/protocols_bgp.py')
-rwxr-xr-xsrc/conf_mode/protocols_bgp.py174
1 files changed, 0 insertions, 174 deletions
diff --git a/src/conf_mode/protocols_bgp.py b/src/conf_mode/protocols_bgp.py
deleted file mode 100755
index 678be5066..000000000
--- a/src/conf_mode/protocols_bgp.py
+++ /dev/null
@@ -1,174 +0,0 @@
-#!/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/>.
-
-from sys import exit
-
-from vyos.config import Config
-from vyos.configdict import dict_merge
-from vyos.template import render
-from vyos.template import render_to_string
-from vyos.util import call
-from vyos.util import dict_search
-from vyos import ConfigError
-from vyos import frr
-from vyos import airbag
-airbag.enable()
-
-config_file = r'/tmp/bgp.frr'
-
-def get_config():
- conf = Config()
- base = ['protocols', 'nbgp']
- bgp = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
-
- # XXX: any reason we can not move this into the FRR template?
- # we shall not call vtysh directly, especially not in get_config()
- if not conf.exists(base):
- bgp = {}
- call('vtysh -c \"conf t\" -c \"no ip protocol bgp\" ')
-
- if not conf.exists(base + ['route-map']):
- call('vtysh -c \"conf t\" -c \"no ip protocol bgp\" ')
-
- # We also need some additional information from the config,
- # prefix-lists and route-maps for instance.
- base = ['policy']
- tmp = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
- # As we only support one ASN (later checked in begin of verify()) we add the
- # new information only to the first AS number
- asn = next(iter(bgp))
- # Merge policy dict into bgp dict
- bgp[asn] = dict_merge(tmp, bgp[asn])
-
- return bgp
-
-def verify(bgp):
- if not bgp:
- return None
-
- # Check if declared more than one ASN
- if len(bgp) > 1:
- raise ConfigError('Only one BGP AS number can be defined!')
-
- for asn, asn_config in bgp.items():
- import pprint
- pprint.pprint(asn_config)
-
- # Common verification for both peer-group and neighbor statements
- for neighbor in ['neighbor', 'peer_group']:
- # bail out early if there is no neighbor or peer-group statement
- # this also saves one indention level
- if neighbor not in asn_config:
- print(f'no {neighbor} found in config')
- continue
-
- for peer, peer_config in asn_config[neighbor].items():
- # Only regular "neighbor" statement can have a peer-group set
- # Check if the configure peer-group exists
- if 'peer_group' in peer_config:
- peer_group = peer_config['peer_group']
- if peer_group not in asn_config['peer_group']:
- raise ConfigError(f'Specified peer-group "{peer_group}" for '\
- f'neighbor "{neighbor}" does not exist!')
-
- # Some checks can/must only be done on a neighbor and nor a peer-group
- if neighbor == 'neighbor':
- # remote-as must be either set explicitly for the neighbor
- # or for the entire peer-group
- if 'remote_as' not in peer_config:
- if 'peer_group' not in peer_config or 'remote_as' not in asn_config['peer_group'][peer_config['peer_group']]:
- raise ConfigError('Remote AS must be set for neighbor or peer-group!')
-
- for afi in ['ipv4_unicast', 'ipv6_unicast']:
- # Bail out early if address family is not configured
- if 'address_family' not in peer_config or afi not in peer_config['address_family']:
- continue
-
- afi_config = peer_config['address_family'][afi]
- # Validate if configured Prefix list exists
- if 'prefix_list' in afi_config:
- for tmp in ['import', 'export']:
- if tmp in afi_config['prefix_list']:
- if afi == 'ipv4_unicast':
- prefix_list = afi_config['prefix_list'][tmp]
- if 'prefix_list' not in asn_config or prefix_list not in asn_config['prefix_list']:
- raise ConfigError(f'prefix-list "{prefix_list}" used for "{tmp}" does not exist!')
- if afi == 'ipv6_unicast':
- prefix_list = afi_config['prefix_list6'][tmp]
- if 'prefix_list6' not in asn_config or prefix_list not in asn_config['prefix_list6']:
- raise ConfigError(f'prefix-list "{prefix_list}" used for "{tmp}" does not exist!')
-
-
- if 'route_map' in afi_config:
- for tmp in ['import', 'export']:
- if tmp in afi_config['route_map']:
- route_map = afi_config['route_map'][tmp]
- if 'route_map' not in asn_config or route_map not in asn_config['route_map']:
- raise ConfigError(f'route-map "{route_map}" used for "{tmp}" does not exist!')
-
-
- return None
-
-def generate(bgp):
- if not bgp:
- bgp['new_frr_config'] = ''
- return None
-
- # only one BGP AS is supported, so we can directly send the first key
- # of the config dict
- asn = list(bgp.keys())[0]
- bgp[asn]['asn'] = asn
-
- # render(config) not needed, its only for debug
- render(config_file, 'frr/bgp.frr.tmpl', bgp[asn])
- bgp['new_frr_config'] = render_to_string('frr/bgp.frr.tmpl', bgp[asn])
-
- return None
-
-def apply(bgp):
- # Save original configuration prior to starting any commit actions
- frr_cfg = frr.FRRConfig()
- frr_cfg.load_configuration(daemon='bgpd')
- frr_cfg.modify_section(f'router bgp \S+', '')
- frr_cfg.add_before(r'(ip prefix-list .*|route-map .*|line vty)', bgp['new_frr_config'])
- frr_cfg.commit_configuration(daemon='bgpd')
-
- # If FRR config is blank, rerun the blank commit x times due to frr-reload
- # behavior/bug not properly clearing out on one commit.
- if bgp['new_frr_config'] == '':
- for a in range(5):
- frr_cfg.commit_configuration(daemon='bgpd')
-
- # Debugging
- '''
- print('')
- print('--------- DEBUGGING ----------')
- print(f'Existing config:\n{frr_cfg["original_config"]}\n\n')
- print(f'Replacement config:\n{bgp["new_frr_config"]}\n\n')
- print(f'Modified config:\n{frr_cfg["modified_config"]}\n\n')
- '''
-
- return None
-
-if __name__ == '__main__':
- try:
- c = get_config()
- verify(c)
- generate(c)
- apply(c)
- except ConfigError as e:
- print(e)
- exit(1)