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authorChristian Poessinger <christian@poessinger.com>2021-02-10 21:05:28 +0100
committerChristian Poessinger <christian@poessinger.com>2021-02-10 21:05:28 +0100
commit4f884631d937b16258f352e085db79e4398c0971 (patch)
tree757423df1feb0000cf84a9aa86e6d3c3b698790e /src/conf_mode/protocols_ripng.py
parentc79a61a67468ba84ad19e6b09097fdbaec1aa649 (diff)
downloadvyos-1x-4f884631d937b16258f352e085db79e4398c0971.tar.gz
vyos-1x-4f884631d937b16258f352e085db79e4398c0971.zip
ripng: T3281: migrate to get_config_dict() and FRR reload
Diffstat (limited to 'src/conf_mode/protocols_ripng.py')
-rwxr-xr-xsrc/conf_mode/protocols_ripng.py133
1 files changed, 133 insertions, 0 deletions
diff --git a/src/conf_mode/protocols_ripng.py b/src/conf_mode/protocols_ripng.py
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+++ b/src/conf_mode/protocols_ripng.py
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+#!/usr/bin/env python3
+#
+# Copyright (C) 2021 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.config import Config
+from vyos.configdict import dict_merge
+from vyos.configverify import verify_route_maps
+from vyos.util import call
+from vyos.util import dict_search
+from vyos.xml import defaults
+from vyos.template import render_to_string
+from vyos import ConfigError
+from vyos import frr
+from vyos import airbag
+airbag.enable()
+
+frr_daemon = 'ripngd'
+
+def get_config(config=None):
+ if config:
+ conf = config
+ else:
+ conf = Config()
+ base = ['protocols', 'ripng']
+ ripng = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
+
+ # Bail out early if configuration tree does not exist
+ if not conf.exists(base):
+ return ripng
+
+ # We have gathered the dict representation of the CLI, but there are default
+ # options which we need to update into the dictionary retrived.
+ default_values = defaults(base)
+ # merge in remaining default values
+ ripng = dict_merge(default_values, ripng)
+
+ # We also need some additional information from the config, prefix-lists
+ # and route-maps for instance. They will be used in verify()
+ base = ['policy']
+ tmp = conf.get_config_dict(base, key_mangling=('-', '_'))
+ # Merge policy dict into OSPF dict
+ ripng = dict_merge(tmp, ripng)
+
+ import pprint
+ pprint.pprint(ripng)
+ return ripng
+
+def verify(ripng):
+ if not ripng:
+ return None
+
+ acl_in = dict_search('distribute_list.access_list.in', ripng)
+ if acl_in and acl_in not in (dict_search('policy.access_list6', ripng) or []):
+ raise ConfigError(f'Inbound access-list6 "{acl_in}" does not exist!')
+
+ acl_out = dict_search('distribute_list.access_list.out', ripng)
+ if acl_out and acl_out not in (dict_search('policy.access_list6', ripng) or []):
+ raise ConfigError(f'Outbound access-list6 "{acl_out}" does not exist!')
+
+ prefix_list_in = dict_search('distribute_list.prefix_list.in', ripng)
+ if prefix_list_in and prefix_list_in.replace('-','_') not in (dict_search('policy.prefix_list6', ripng) or []):
+ raise ConfigError(f'Inbound prefix-list6 "{prefix_list_in}" does not exist!')
+
+ prefix_list_out = dict_search('distribute_list.prefix_list.out', ripng)
+ if prefix_list_out and prefix_list_out.replace('-','_') not in (dict_search('policy.prefix_list6', ripng) or []):
+ raise ConfigError(f'Outbound prefix-list6 "{prefix_list_out}" does not exist!')
+
+ if 'interface' in ripng:
+ for interface, interface_options in ripng['interface'].items():
+ if 'authentication' in interface_options:
+ if {'md5', 'plaintext_password'} <= set(interface_options['authentication']):
+ raise ConfigError('Can not use both md5 and plaintext-password at the same time!')
+ if 'split_horizon' in interface_options:
+ if {'disable', 'poison_reverse'} <= set(interface_options['split_horizon']):
+ raise ConfigError(f'You can not have "split-horizon poison-reverse" enabled ' \
+ f'with "split-horizon disable" for "{interface}"!')
+
+ verify_route_maps(ripng)
+
+def generate(ripng):
+ if not ripng:
+ ripng['new_frr_config'] = ''
+ return None
+
+ ripng['new_frr_config'] = render_to_string('frr/ripng.frr.tmpl', ripng)
+ import pprint
+ pprint.pprint(ripng['new_frr_config'])
+
+ return None
+
+def apply(ripng):
+ # Save original configuration prior to starting any commit actions
+ frr_cfg = frr.FRRConfig()
+ frr_cfg.load_configuration(frr_daemon)
+ frr_cfg.modify_section(r'key chain \S+', '')
+ frr_cfg.modify_section(r'interface \S+', '')
+ frr_cfg.modify_section('router ripng', '')
+ frr_cfg.add_before(r'(ip prefix-list .*|route-map .*|line vty)', ripng['new_frr_config'])
+ frr_cfg.commit_configuration(frr_daemon)
+
+ # 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 ripng['new_frr_config'] == '':
+ for a in range(5):
+ frr_cfg.commit_configuration(frr_daemon)
+
+ return None
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ exit(1)