diff options
Diffstat (limited to 'src/op_mode')
| -rwxr-xr-x | src/op_mode/policy_route.py | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/src/op_mode/policy_route.py b/src/op_mode/policy_route.py new file mode 100755 index 000000000..e0b4ac514 --- /dev/null +++ b/src/op_mode/policy_route.py @@ -0,0 +1,189 @@ +#!/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 argparse +import re +import tabulate + +from vyos.config import Config +from vyos.util import cmd +from vyos.util import dict_search_args + +def get_policy_interfaces(conf, policy, name=None, ipv6=False): + interfaces = conf.get_config_dict(['interfaces'], key_mangling=('-', '_'), + get_first_key=True, no_tag_node_value_mangle=True) + + routes = ['route', 'ipv6_route'] + + def parse_if(ifname, if_conf): + if 'policy' in if_conf: + for route in routes: + if route in if_conf['policy']: + route_name = if_conf['policy'][route] + name_str = f'({ifname},{route})' + + if not name: + policy[route][route_name]['interface'].append(name_str) + elif not ipv6 and name == route_name: + policy['interface'].append(name_str) + + for iftype in ['vif', 'vif_s', 'vif_c']: + if iftype in if_conf: + for vifname, vif_conf in if_conf[iftype].items(): + parse_if(f'{ifname}.{vifname}', vif_conf) + + for iftype, iftype_conf in interfaces.items(): + for ifname, if_conf in iftype_conf.items(): + parse_if(ifname, if_conf) + +def get_config_policy(conf, name=None, ipv6=False, interfaces=True): + config_path = ['policy'] + if name: + config_path += ['ipv6-route' if ipv6 else 'route', name] + + policy = conf.get_config_dict(config_path, key_mangling=('-', '_'), + get_first_key=True, no_tag_node_value_mangle=True) + if policy and interfaces: + if name: + policy['interface'] = [] + else: + if 'route' in policy: + for route_name, route_conf in policy['route'].items(): + route_conf['interface'] = [] + + if 'ipv6_route' in policy: + for route_name, route_conf in policy['ipv6_route'].items(): + route_conf['interface'] = [] + + get_policy_interfaces(conf, policy, name, ipv6) + + return policy + +def get_nftables_details(name, ipv6=False): + suffix = '6' if ipv6 else '' + command = f'sudo nft list chain ip{suffix} mangle VYOS_PBR{suffix}_{name}' + try: + results = cmd(command) + except: + return {} + + out = {} + for line in results.split('\n'): + comment_search = re.search(rf'{name}[\- ](\d+|default-action)', line) + if not comment_search: + continue + + rule = {} + rule_id = comment_search[1] + counter_search = re.search(r'counter packets (\d+) bytes (\d+)', line) + if counter_search: + rule['packets'] = counter_search[1] + rule['bytes'] = counter_search[2] + + rule['conditions'] = re.sub(r'(\b(counter packets \d+ bytes \d+|drop|reject|return|log)\b|comment "[\w\-]+")', '', line).strip() + out[rule_id] = rule + return out + +def output_policy_route(name, route_conf, ipv6=False, single_rule_id=None): + ip_str = 'IPv6' if ipv6 else 'IPv4' + print(f'\n---------------------------------\n{ip_str} Policy Route "{name}"\n') + + if route_conf['interface']: + print('Active on: {0}\n'.format(" ".join(route_conf['interface']))) + + details = get_nftables_details(name, ipv6) + rows = [] + + if 'rule' in route_conf: + for rule_id, rule_conf in route_conf['rule'].items(): + if single_rule_id and rule_id != single_rule_id: + continue + + if 'disable' in rule_conf: + continue + + action = rule_conf['action'] if 'action' in rule_conf else 'set' + protocol = rule_conf['protocol'] if 'protocol' in rule_conf else 'all' + + row = [rule_id, action, protocol] + if rule_id in details: + rule_details = details[rule_id] + row.append(rule_details.get('packets', 0)) + row.append(rule_details.get('bytes', 0)) + row.append(rule_details['conditions']) + rows.append(row) + + if 'default_action' in route_conf and not single_rule_id: + row = ['default', route_conf['default_action'], 'all'] + if 'default-action' in details: + rule_details = details['default-action'] + row.append(rule_details.get('packets', 0)) + row.append(rule_details.get('bytes', 0)) + rows.append(row) + + if rows: + header = ['Rule', 'Action', 'Protocol', 'Packets', 'Bytes', 'Conditions'] + print(tabulate.tabulate(rows, header) + '\n') + +def show_policy(ipv6=False): + print('Ruleset Information') + + conf = Config() + policy = get_config_policy(conf) + + if not policy: + return + + if not ipv6 and 'route' in policy: + for route, route_conf in policy['route'].items(): + output_policy_route(route, route_conf, ipv6=False) + + if ipv6 and 'ipv6_route' in policy: + for route, route_conf in policy['ipv6_route'].items(): + output_policy_route(route, route_conf, ipv6=True) + +def show_policy_name(name, ipv6=False): + print('Ruleset Information') + + conf = Config() + policy = get_config_policy(conf, name, ipv6) + if policy: + output_policy_route(name, policy, ipv6) + +def show_policy_rule(name, rule_id, ipv6=False): + print('Rule Information') + + conf = Config() + policy = get_config_policy(conf, name, ipv6) + if policy: + output_policy_route(name, policy, ipv6, rule_id) + +if __name__ == '__main__': + parser = argparse.ArgumentParser() + parser.add_argument('--action', help='Action', required=False) + parser.add_argument('--name', help='Policy name', required=False, action='store', nargs='?', default='') + parser.add_argument('--rule', help='Policy Rule ID', required=False) + parser.add_argument('--ipv6', help='IPv6 toggle', action='store_true') + + args = parser.parse_args() + + if args.action == 'show': + if not args.rule: + show_policy_name(args.name, args.ipv6) + else: + show_policy_rule(args.name, args.rule, args.ipv6) + elif args.action == 'show_all': + show_policy(args.ipv6) |