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authorChristian Poessinger <christian@poessinger.com>2022-11-17 17:52:03 +0100
committerGitHub <noreply@github.com>2022-11-17 17:52:03 +0100
commita295c8fd127c02e1af1a8051961ee2b8e2850fd1 (patch)
tree51acc8b143c2733c6ee5dc2b88a7bf7610c6df57 /src/conf_mode/policy-route-interface.py
parent4545c51f37e89bc876da759c26e85eb2d65da004 (diff)
parent586b24e0af1ae57c47c772229fc94ab50dfc1e4f (diff)
downloadvyos-1x-a295c8fd127c02e1af1a8051961ee2b8e2850fd1.tar.gz
vyos-1x-a295c8fd127c02e1af1a8051961ee2b8e2850fd1.zip
Merge pull request #1654 from sarthurdev/pbr_refactor
policy: T2199: T4605: Migrate policy route interface node
Diffstat (limited to 'src/conf_mode/policy-route-interface.py')
-rwxr-xr-xsrc/conf_mode/policy-route-interface.py132
1 files changed, 0 insertions, 132 deletions
diff --git a/src/conf_mode/policy-route-interface.py b/src/conf_mode/policy-route-interface.py
deleted file mode 100755
index 58c5fd93d..000000000
--- a/src/conf_mode/policy-route-interface.py
+++ /dev/null
@@ -1,132 +0,0 @@
-#!/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
-import re
-
-from sys import argv
-from sys import exit
-
-from vyos.config import Config
-from vyos.ifconfig import Section
-from vyos.template import render
-from vyos.util import cmd
-from vyos.util import run
-from vyos import ConfigError
-from vyos import airbag
-airbag.enable()
-
-def get_config(config=None):
- if config:
- conf = config
- else:
- conf = Config()
-
- ifname = argv[1]
- ifpath = Section.get_config_path(ifname)
- if_policy_path = f'interfaces {ifpath} policy'
-
- if_policy = conf.get_config_dict(if_policy_path, key_mangling=('-', '_'), get_first_key=True,
- no_tag_node_value_mangle=True)
-
- if_policy['ifname'] = ifname
- if_policy['policy'] = conf.get_config_dict(['policy'], key_mangling=('-', '_'), get_first_key=True,
- no_tag_node_value_mangle=True)
-
- return if_policy
-
-def verify_chain(table, chain):
- # Verify policy route applied
- code = run(f'nft list chain {table} {chain}')
- return code == 0
-
-def verify(if_policy):
- # bail out early - looks like removal from running config
- if not if_policy:
- return None
-
- for route in ['route', 'route6']:
- if route in if_policy:
- if route not in if_policy['policy']:
- raise ConfigError('Policy route not configured')
-
- route_name = if_policy[route]
-
- if route_name not in if_policy['policy'][route]:
- raise ConfigError(f'Invalid policy route name "{name}"')
-
- nft_prefix = 'VYOS_PBR6_' if route == 'route6' else 'VYOS_PBR_'
- nft_table = 'ip6 mangle' if route == 'route6' else 'ip mangle'
-
- if not verify_chain(nft_table, nft_prefix + route_name):
- raise ConfigError('Policy route did not apply')
-
- return None
-
-def generate(if_policy):
- return None
-
-def cleanup_rule(table, chain, ifname, new_name=None):
- results = cmd(f'nft -a list chain {table} {chain}').split("\n")
- retval = None
- for line in results:
- if f'ifname "{ifname}"' in line:
- if new_name and f'jump {new_name}' in line:
- # new_name is used to clear rules for any previously referenced chains
- # returns true when rule exists and doesn't need to be created
- retval = True
- continue
-
- handle_search = re.search('handle (\d+)', line)
- if handle_search:
- cmd(f'nft delete rule {table} {chain} handle {handle_search[1]}')
- return retval
-
-def apply(if_policy):
- ifname = if_policy['ifname']
-
- route_chain = 'VYOS_PBR_PREROUTING'
- ipv6_route_chain = 'VYOS_PBR6_PREROUTING'
-
- if 'route' in if_policy:
- name = 'VYOS_PBR_' + if_policy['route']
- rule_exists = cleanup_rule('ip mangle', route_chain, ifname, name)
-
- if not rule_exists:
- cmd(f'nft insert rule ip mangle {route_chain} iifname {ifname} counter jump {name}')
- else:
- cleanup_rule('ip mangle', route_chain, ifname)
-
- if 'route6' in if_policy:
- name = 'VYOS_PBR6_' + if_policy['route6']
- rule_exists = cleanup_rule('ip6 mangle', ipv6_route_chain, ifname, name)
-
- if not rule_exists:
- cmd(f'nft insert rule ip6 mangle {ipv6_route_chain} iifname {ifname} counter jump {name}')
- else:
- cleanup_rule('ip6 mangle', ipv6_route_chain, ifname)
-
- return None
-
-if __name__ == '__main__':
- try:
- c = get_config()
- verify(c)
- generate(c)
- apply(c)
- except ConfigError as e:
- print(e)
- exit(1)