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authorChristian Poessinger <christian@poessinger.com>2021-01-27 20:38:25 +0100
committerChristian Poessinger <christian@poessinger.com>2021-01-29 10:36:21 +0100
commitca75e23fee7e4c9f809e5cabf158e9aa749c997d (patch)
tree2ab43e75c00e40e0da08166d438df16443498af3 /src/conf_mode
parent8979c546bd343c9d68f42bf1215cb1721a7c3206 (diff)
downloadvyos-1x-ca75e23fee7e4c9f809e5cabf158e9aa749c997d.tar.gz
vyos-1x-ca75e23fee7e4c9f809e5cabf158e9aa749c997d.zip
rpki: T3255: provide full protocol support in XML and Python
This commit provides the implementation of the OSPF CLI with a Jinja2 template that is loaded by FRR reload.
Diffstat (limited to 'src/conf_mode')
-rwxr-xr-xsrc/conf_mode/protocols_rpki.py147
1 files changed, 147 insertions, 0 deletions
diff --git a/src/conf_mode/protocols_rpki.py b/src/conf_mode/protocols_rpki.py
new file mode 100755
index 000000000..9ea066f7f
--- /dev/null
+++ b/src/conf_mode/protocols_rpki.py
@@ -0,0 +1,147 @@
+#!/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.template import render
+from vyos.template import render_to_string
+from vyos.util import call
+from vyos.util import dict_search
+from vyos.xml import defaults
+from vyos import ConfigError
+from vyos import frr
+from vyos import airbag
+airbag.enable()
+
+config_file = r'/tmp/rpki.frr'
+frr_daemon = 'bgpd'
+
+DEBUG = os.path.exists('/tmp/rpki.debug')
+if DEBUG:
+ import logging
+ lg = logging.getLogger("vyos.frr")
+ lg.setLevel(logging.DEBUG)
+ ch = logging.StreamHandler()
+ lg.addHandler(ch)
+
+def get_config(config=None):
+ if config:
+ conf = config
+ else:
+ conf = Config()
+ base = ['protocols', 'rpki']
+
+ rpki = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
+ if not conf.exists(base):
+ return rpki
+
+ # 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)
+ rpki = dict_merge(default_values, rpki)
+
+ return rpki
+
+def verify(rpki):
+ import pprint
+ pprint.pprint(rpki)
+
+ if not rpki:
+ return None
+
+ if 'cache' in rpki:
+ preferences = []
+ for peer, peer_config in rpki['cache'].items():
+ for mandatory in ['port', 'preference']:
+ if mandatory not in peer_config:
+ raise ConfigError(f'RPKI cache "{peer}" {mandatory} must be defined!')
+
+ if 'preference' in peer_config:
+ preference = peer_config['preference']
+ if preference in preferences:
+ raise ConfigError(f'RPKI cache with preference {preference} already configured!')
+ preferences.append(preference)
+
+ if 'ssh' in peer_config:
+ files = ['private_key_file', 'public_key_file', 'known_hosts_file']
+ for file in files:
+ if file not in peer_config['ssh']:
+ raise ConfigError('RPKI+SSH requires username, public/private ' \
+ 'keys and known-hosts file to be defined!')
+
+ filename = peer_config['ssh'][file]
+ if not os.path.exists(filename):
+ raise ConfigError(f'RPKI SSH {file.replace("-","-")} "{filename}" does not exist!')
+
+ return None
+
+def generate(rpki):
+ if not rpki:
+ rpki['new_frr_config'] = ''
+ return None
+
+ # render(config) not needed, its only for debug
+ render(config_file, 'frr/rpki.frr.tmpl', rpki)
+ rpki['new_frr_config'] = render_to_string('frr/rpki.frr.tmpl', rpki)
+
+ return None
+
+def apply(rpki):
+ # Save original configuration prior to starting any commit actions
+ frr_cfg = frr.FRRConfig()
+ frr_cfg.load_configuration(frr_daemon)
+ frr_cfg.modify_section('rpki', '')
+ frr_cfg.add_before(r'(ip prefix-list .*|route-map .*|line vty)', rpki['new_frr_config'])
+
+ # Debugging
+ if DEBUG:
+ from pprint import pprint
+ print('')
+ print('--------- DEBUGGING ----------')
+ pprint(dir(frr_cfg))
+ print('Existing config:\n')
+ for line in frr_cfg.original_config:
+ print(line)
+ print(f'Replacement config:\n')
+ print(f'{rpki["new_frr_config"]}')
+ print(f'Modified config:\n')
+ print(f'{frr_cfg}')
+
+ frr_cfg.commit_configuration(frr_daemon)
+
+ # If FRR config is blank, re-run the blank commit x times due to frr-reload
+ # behavior/bug not properly clearing out on one commit.
+ if rpki['new_frr_config'] == '':
+ for a in range(5):
+ frr_cfg.commit_configuration(frr_daemon)
+
+ raise ConfigError("sadf")
+ return None
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ exit(1)