diff options
| -rw-r--r-- | python/vyos/util.py | 26 | ||||
| -rwxr-xr-x | src/op_mode/show_ipsec_connections.py | 284 |
2 files changed, 310 insertions, 0 deletions
diff --git a/python/vyos/util.py b/python/vyos/util.py index 1c4102e90..67ec3ecc6 100644 --- a/python/vyos/util.py +++ b/python/vyos/util.py @@ -699,6 +699,32 @@ def dict_search(path, dict_object): c = c.get(p, {}) return c.get(parts[-1], None) +def convert_data(data): + """Convert multiple types of data to types usable in CLI + + Args: + data (str | bytes | list | OrderedDict): input data + + Returns: + str | list | dict: converted data + """ + from collections import OrderedDict + + if isinstance(data, str): + return data + if isinstance(data, bytes): + return data.decode() + if isinstance(data, list): + list_tmp = [] + for item in data: + list_tmp.append(convert_data(item)) + return list_tmp + if isinstance(data, OrderedDict): + dict_tmp = {} + for key, value in data.items(): + dict_tmp[key] = convert_data(value) + return dict_tmp + def get_bridge_fdb(interface): """ Returns the forwarding database entries for a given interface """ if not os.path.exists(f'/sys/class/net/{interface}'): diff --git a/src/op_mode/show_ipsec_connections.py b/src/op_mode/show_ipsec_connections.py new file mode 100755 index 000000000..4ca8f8e51 --- /dev/null +++ b/src/op_mode/show_ipsec_connections.py @@ -0,0 +1,284 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2022 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 sys + +from vyos.util import convert_data + + +def _get_vici_sas(): + from vici import Session as vici_session + + try: + session = vici_session() + except PermissionError: + print("You do not have a permission to connect to the IPsec daemon") + sys.exit(1) + except ConnectionRefusedError: + print("IPsec is not runing") + sys.exit(1) + except Exception as e: + print("An error occured: {0}".format(e)) + sys.exit(1) + sas = list(session.list_sas()) + return convert_data(sas) + + +def _get_vici_connections(): + from vici import Session as vici_session + + try: + session = vici_session() + except PermissionError: + print("You do not have a permission to connect to the IPsec daemon") + sys.exit(1) + except ConnectionRefusedError: + print("IPsec is not runing") + sys.exit(1) + except Exception as e: + print("An error occured: {0}".format(e)) + sys.exit(1) + connections = list(session.list_conns()) + return convert_data(connections) + + +def _get_parent_sa_proposal(connection_name: str, data: list) -> dict: + """Get parent SA proposals by connection name + if connections not in the 'down' state + Args: + connection_name (str): Connection name + data (list): List of current SAs from vici + Returns: + str: Parent SA connection proposal + AES_CBC/256/HMAC_SHA2_256_128/MODP_1024 + """ + if not data: + return {} + for sa in data: + # check if parent SA exist + if connection_name not in sa.keys(): + return {} + if 'encr-alg' in sa[connection_name]: + encr_alg = sa.get(connection_name, '').get('encr-alg') + cipher = encr_alg.split('_')[0] + mode = encr_alg.split('_')[1] + encr_keysize = sa.get(connection_name, '').get('encr-keysize') + integ_alg = sa.get(connection_name, '').get('integ-alg') + # prf_alg = sa.get(connection_name, '').get('prf-alg') + dh_group = sa.get(connection_name, '').get('dh-group') + proposal = { + 'cipher': cipher, + 'mode': mode, + 'key_size': encr_keysize, + 'hash': integ_alg, + 'dh': dh_group + } + return proposal + return {} + + +def _get_parent_sa_state(connection_name: str, data: list) -> str: + """Get parent SA state by connection name + Args: + connection_name (str): Connection name + data (list): List of current SAs from vici + Returns: + Parent SA connection state + """ + if not data: + return 'down' + for sa in data: + # check if parent SA exist + if connection_name not in sa.keys(): + return 'down' + if sa[connection_name]['state'].lower() == 'established': + return 'up' + else: + return 'down' + + +def _get_child_sa_state(connection_name: str, tunnel_name: str, + data: list) -> str: + """Get child SA state by connection and tunnel name + Args: + connection_name (str): Connection name + tunnel_name (str): Tunnel name + data (list): List of current SAs from vici + Returns: + str: `up` if child SA state is 'installed' otherwise `down` + """ + if not data: + return 'down' + for sa in data: + # check if parent SA exist + if connection_name not in sa.keys(): + return 'down' + child_sas = sa[connection_name]['child-sas'] + # Get all child SA states + # there can be multiple SAs per tunnel + child_sa_states = [ + v['state'] for k, v in child_sas.items() if v['name'] == tunnel_name + ] + return 'up' if 'INSTALLED' in child_sa_states else 'down' + + +def _get_child_sa_info(connection_name: str, tunnel_name: str, + data: list) -> dict: + """Get child SA installed info by connection and tunnel name + Args: + connection_name (str): Connection name + tunnel_name (str): Tunnel name + data (list): List of current SAs from vici + Returns: + dict: Info of the child SA in the dictionary format + """ + for sa in data: + # check if parent SA exist + if connection_name not in sa.keys(): + return {} + child_sas = sa[connection_name]['child-sas'] + # Get all child SA data + # Skip temp SA name (first key), get only SA values as dict + # {'OFFICE-B-tunnel-0-46': {'name': 'OFFICE-B-tunnel-0'}...} + # i.e get all data after 'OFFICE-B-tunnel-0-46' + child_sa_info = [ + v for k, v in child_sas.items() if 'name' in v and + v['name'] == tunnel_name and v['state'] == 'INSTALLED' + ] + return child_sa_info[-1] if child_sa_info else {} + + +def _get_child_sa_proposal(child_sa_data: dict) -> dict: + if child_sa_data and 'encr-alg' in child_sa_data: + encr_alg = child_sa_data.get('encr-alg') + cipher = encr_alg.split('_')[0] + mode = encr_alg.split('_')[1] + key_size = child_sa_data.get('encr-keysize') + integ_alg = child_sa_data.get('integ-alg') + dh_group = child_sa_data.get('dh-group') + proposal = { + 'cipher': cipher, + 'mode': mode, + 'key_size': key_size, + 'hash': integ_alg, + 'dh': dh_group + } + return proposal + return {} + + +def _get_raw_data_connections(list_connections: list, list_sas: list) -> list: + """Get configured VPN IKE connections and IPsec states + Args: + list_connections (list): List of configured connections from vici + list_sas (list): List of current SAs from vici + Returns: + list: List and status of IKE/IPsec connections/tunnels + """ + base_dict = [] + for connections in list_connections: + base_list = {} + for connection, conn_conf in connections.items(): + base_list['ike_connection_name'] = connection + base_list['ike_connection_state'] = _get_parent_sa_state( + connection, list_sas) + base_list['ike_remote_address'] = conn_conf['remote_addrs'] + base_list['ike_proposal'] = _get_parent_sa_proposal( + connection, list_sas) + base_list['local_id'] = conn_conf.get('local-1', '').get('id') + base_list['remote_id'] = conn_conf.get('remote-1', '').get('id') + base_list['version'] = conn_conf.get('version', 'IKE') + base_list['children'] = [] + children = conn_conf['children'] + for tunnel, tun_options in children.items(): + state = _get_child_sa_state(connection, tunnel, list_sas) + local_ts = tun_options.get('local-ts') + remote_ts = tun_options.get('remote-ts') + dpd_action = tun_options.get('dpd_action') + close_action = tun_options.get('close_action') + sa_info = _get_child_sa_info(connection, tunnel, list_sas) + esp_proposal = _get_child_sa_proposal(sa_info) + base_list['children'].append({ + 'name': tunnel, + 'state': state, + 'local_ts': local_ts, + 'remote_ts': remote_ts, + 'dpd_action': dpd_action, + 'close_action': close_action, + 'esp_proposal': esp_proposal + }) + base_dict.append(base_list) + return base_dict + + +def _get_formatted_output_conections(data): + from tabulate import tabulate + data_entries = '' + connections = [] + for entry in data: + tunnels = [] + ike_name = entry['ike_connection_name'] + ike_state = entry['ike_connection_state'] + conn_type = entry.get('version', 'IKE') + remote_addrs = ','.join(entry['ike_remote_address']) + local_ts, remote_ts = '-', '-' + local_id = entry['local_id'] + remote_id = entry['remote_id'] + proposal = '-' + if entry.get('ike_proposal'): + proposal = (f'{entry["ike_proposal"]["cipher"]}_' + f'{entry["ike_proposal"]["mode"]}/' + f'{entry["ike_proposal"]["key_size"]}/' + f'{entry["ike_proposal"]["hash"]}/' + f'{entry["ike_proposal"]["dh"]}') + connections.append([ + ike_name, ike_state, conn_type, remote_addrs, local_ts, remote_ts, + local_id, remote_id, proposal + ]) + for tun in entry['children']: + tun_name = tun.get('name') + tun_state = tun.get('state') + conn_type = 'IPsec' + local_ts = '\n'.join(tun.get('local_ts')) + remote_ts = '\n'.join(tun.get('remote_ts')) + proposal = '-' + if tun.get('esp_proposal'): + proposal = (f'{tun["esp_proposal"]["cipher"]}_' + f'{tun["esp_proposal"]["mode"]}/' + f'{tun["esp_proposal"]["key_size"]}/' + f'{tun["esp_proposal"]["hash"]}/' + f'{tun["esp_proposal"]["dh"]}') + connections.append([ + tun_name, tun_state, conn_type, remote_addrs, local_ts, + remote_ts, local_id, remote_id, proposal + ]) + connection_headers = [ + 'Connection', 'State', 'Type', 'Remote address', 'Local TS', + 'Remote TS', 'Local id', 'Remote id', 'Proposal' + ] + output = tabulate(connections, connection_headers, numalign='left') + return output + + +def main(): + list_conns = _get_vici_connections() + list_sas = _get_vici_sas() + connections = _get_raw_data_connections(list_conns, list_sas) + return _get_formatted_output_conections(connections) + + +if __name__ == '__main__': + print(main()) |