diff options
Diffstat (limited to 'src')
| -rwxr-xr-x | src/conf_mode/interfaces_openvpn.py | 4 | ||||
| -rw-r--r-- | src/migration-scripts/openvpn/1-to-2 | 74 | ||||
| -rwxr-xr-x | src/op_mode/conntrack_sync.py | 25 | ||||
| -rwxr-xr-x | src/op_mode/lldp.py | 23 | ||||
| -rw-r--r-- | src/op_mode/tcpdump.py | 165 |
5 files changed, 283 insertions, 8 deletions
diff --git a/src/conf_mode/interfaces_openvpn.py b/src/conf_mode/interfaces_openvpn.py index 627cc90ba..017010a61 100755 --- a/src/conf_mode/interfaces_openvpn.py +++ b/src/conf_mode/interfaces_openvpn.py @@ -515,6 +515,10 @@ def verify(openvpn): print('Warning: using dh-params and EC keys simultaneously will ' \ 'lead to DH ciphers being used instead of ECDH') + if dict_search('encryption.cipher', openvpn): + raise ConfigError('"encryption cipher" option is deprecated for TLS mode. ' + 'Use "encryption ncp-ciphers" instead') + if dict_search('encryption.cipher', openvpn) == 'none': print('Warning: "encryption none" was specified!') print('No encryption will be performed and data is transmitted in ' \ diff --git a/src/migration-scripts/openvpn/1-to-2 b/src/migration-scripts/openvpn/1-to-2 new file mode 100644 index 000000000..1f82a2128 --- /dev/null +++ b/src/migration-scripts/openvpn/1-to-2 @@ -0,0 +1,74 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2024 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/>. +# +# Removes --cipher option (deprecated) from OpenVPN configs +# and moves it to --data-ciphers for server and client modes + +import sys + +from vyos.configtree import ConfigTree + +if len(sys.argv) < 2: + print("Must specify file name!") + sys.exit(1) + +file_name = sys.argv[1] + +with open(file_name, 'r') as f: + config_file = f.read() + +config = ConfigTree(config_file) + +if not config.exists(['interfaces', 'openvpn']): + # Nothing to do + sys.exit(0) +else: + ovpn_intfs = config.list_nodes(['interfaces', 'openvpn']) + for i in ovpn_intfs: + # Remove 'encryption cipher' and add this value to 'encryption ncp-ciphers' + # for server and client mode. + # Site-to-site mode still can use --cipher option + cipher_path = ['interfaces', 'openvpn', i, 'encryption', 'cipher'] + ncp_cipher_path = ['interfaces', 'openvpn', i, 'encryption', 'ncp-ciphers'] + if config.exists(cipher_path): + if config.exists(['interfaces', 'openvpn', i, 'shared-secret-key']): + continue + cipher = config.return_value(cipher_path) + config.delete(cipher_path) + if cipher == 'none': + if not config.exists(ncp_cipher_path): + config.delete(['interfaces', 'openvpn', i, 'encryption']) + continue + + ncp_ciphers = [] + if config.exists(ncp_cipher_path): + ncp_ciphers = config.return_values(ncp_cipher_path) + config.delete(ncp_cipher_path) + + # need to add the deleted cipher at the first place in the list + if cipher in ncp_ciphers: + ncp_ciphers.remove(cipher) + ncp_ciphers.insert(0, cipher) + + for c in ncp_ciphers: + config.set(ncp_cipher_path, value=c, replace=False) + + try: + with open(file_name, 'w') as f: + f.write(config.to_string()) + except OSError as e: + print("Failed to save the modified config: {}".format(e)) + sys.exit(1) diff --git a/src/op_mode/conntrack_sync.py b/src/op_mode/conntrack_sync.py index 6c86ff492..f3b09b452 100755 --- a/src/op_mode/conntrack_sync.py +++ b/src/op_mode/conntrack_sync.py @@ -19,6 +19,8 @@ import sys import syslog import xmltodict +from tabulate import tabulate + import vyos.opmode from vyos.configquery import CliShellApiConfigQuery @@ -27,7 +29,6 @@ from vyos.utils.commit import commit_in_progress from vyos.utils.process import call from vyos.utils.process import cmd from vyos.utils.process import run -from vyos.template import render_to_string conntrackd_bin = '/usr/sbin/conntrackd' conntrackd_config = '/run/conntrackd/conntrackd.conf' @@ -59,6 +60,26 @@ def flush_cache(direction): if tmp > 0: raise vyos.opmode.Error('Failed to clear {direction} cache') +def get_formatted_output(data): + data_entries = [] + for parsed in data: + for meta in parsed.get('flow', {}).get('meta', []): + direction = meta['@direction'] + if direction == 'original': + src = meta['layer3']['src'] + dst = meta['layer3']['dst'] + sport = meta['layer4'].get('sport') + dport = meta['layer4'].get('dport') + protocol = meta['layer4'].get('@protoname') + orig_src = f'{src}:{sport}' if sport else src + orig_dst = f'{dst}:{dport}' if dport else dst + + data_entries.append([orig_src, orig_dst, protocol]) + + headers = ["Source", "Destination", "Protocol"] + output = tabulate(data_entries, headers, tablefmt="simple") + return output + def from_xml(raw, xml): out = [] for line in xml.splitlines(): @@ -70,7 +91,7 @@ def from_xml(raw, xml): if raw: return out else: - return render_to_string('conntrackd/conntrackd.op-mode.j2', {'data' : out}) + return get_formatted_output(out) def restart(): is_configured() diff --git a/src/op_mode/lldp.py b/src/op_mode/lldp.py index 58cfce443..fac622b81 100755 --- a/src/op_mode/lldp.py +++ b/src/op_mode/lldp.py @@ -120,7 +120,12 @@ def _get_formatted_output(raw_data): tmp.append('') # Remote interface - interface = jmespath.search('port.descr', values) + interface = None + if jmespath.search('port.id.type', values) == 'ifname': + # Remote peer has explicitly returned the interface name as the PortID + interface = jmespath.search('port.id.value', values) + if not interface: + interface = jmespath.search('port.descr', values) if not interface: interface = jmespath.search('port.id.value', values) if not interface: @@ -136,11 +141,17 @@ def _get_formatted_output(raw_data): @_verify def show_neighbors(raw: bool, interface: typing.Optional[str], detail: typing.Optional[bool]): - lldp_data = _get_raw_data(interface=interface, detail=detail) - if raw: - return lldp_data - else: - return _get_formatted_output(lldp_data) + if raw or not detail: + lldp_data = _get_raw_data(interface=interface, detail=detail) + if raw: + return lldp_data + else: + return _get_formatted_output(lldp_data) + else: # non-raw, detail + tmp = 'lldpcli -f text show neighbors details' + if interface: + tmp += f' ports {interface}' + return cmd(tmp) if __name__ == "__main__": try: diff --git a/src/op_mode/tcpdump.py b/src/op_mode/tcpdump.py new file mode 100644 index 000000000..607b59603 --- /dev/null +++ b/src/op_mode/tcpdump.py @@ -0,0 +1,165 @@ +#! /usr/bin/env python3 + +# Copyright (C) 2024 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.utils.process import call + +options = { + 'dump': { + 'cmd': '{command} -A', + 'type': 'noarg', + 'help': 'Print each packet (minus its link level header) in ASCII.' + }, + 'hexdump': { + 'cmd': '{command} -X', + 'type': 'noarg', + 'help': 'Print each packet (minus its link level header) in both hex and ASCII.' + }, + 'filter': { + 'cmd': '{command} \'{value}\'', + 'type': '<pcap-filter>', + 'help': 'Match traffic for capture and display with a pcap-filter expression.' + }, + 'numeric': { + 'cmd': '{command} -nn', + 'type': 'noarg', + 'help': 'Do not attempt to resolve addresses, protocols or services to names.' + }, + 'save': { + 'cmd': '{command} -w {value}', + 'type': '<file>', + 'help': 'Write captured raw packets to <file> rather than parsing or printing them out.' + }, + 'verbose': { + 'cmd': '{command} -vvv -ne', + 'type': 'noarg', + 'help': 'Parse packets with increased detail output, including link-level headers and extended decoding protocol sanity checks.' + }, +} + +tcpdump = 'sudo /usr/bin/tcpdump' + +class List(list): + def first(self): + return self.pop(0) if self else '' + + def last(self): + return self.pop() if self else '' + + def prepend(self, value): + self.insert(0, value) + + +def completion_failure(option: str) -> None: + """ + Shows failure message after TAB when option is wrong + :param option: failure option + :type str: + """ + sys.stderr.write('\n\n Invalid option: {}\n\n'.format(option)) + sys.stdout.write('<nocomps>') + sys.exit(1) + + +def expansion_failure(option, completions): + reason = 'Ambiguous' if completions else 'Invalid' + sys.stderr.write( + '\n\n {} command: {} [{}]\n\n'.format(reason, ' '.join(sys.argv), + option)) + if completions: + sys.stderr.write(' Possible completions:\n ') + sys.stderr.write('\n '.join(completions)) + sys.stderr.write('\n') + sys.stdout.write('<nocomps>') + sys.exit(1) + + +def complete(prefix): + return [o for o in options if o.startswith(prefix)] + + +def convert(command, args): + while args: + shortname = args.first() + longnames = complete(shortname) + if len(longnames) != 1: + expansion_failure(shortname, longnames) + longname = longnames[0] + if options[longname]['type'] == 'noarg': + command = options[longname]['cmd'].format( + command=command, value='') + elif not args: + sys.exit(f'monitor traffic: missing argument for {longname} option') + else: + command = options[longname]['cmd'].format( + command=command, value=args.first()) + return command + + +if __name__ == '__main__': + args = List(sys.argv[1:]) + ifname = args.first() + + # Slightly simplified & tweaked version of the code from mtr.py - it may be + # worthwhile to combine and centralise this in a common module. + if ifname == '--get-options-nested': + args.first() # pop monitor + args.first() # pop traffic + args.first() # pop interface + args.first() # pop <ifname> + usedoptionslist = [] + while args: + option = args.first() # pop option + matched = complete(option) # get option parameters + usedoptionslist.append(option) # list of used options + # Select options + if not args: + # remove from Possible completions used options + for o in usedoptionslist: + if o in matched: + matched.remove(o) + if not matched: + sys.stdout.write('<nocomps>') + else: + sys.stdout.write(' '.join(matched)) + sys.exit(0) + + if len(matched) > 1: + sys.stdout.write(' '.join(matched)) + sys.exit(0) + # If option doesn't have value + if matched: + if options[matched[0]]['type'] == 'noarg': + continue + else: + # Unexpected option + completion_failure(option) + + value = args.first() # pop option's value + if not args: + matched = complete(option) + helplines = options[matched[0]]['type'] + # Run helpfunction to get list of possible values + if 'helpfunction' in options[matched[0]]: + result = options[matched[0]]['helpfunction']() + if result: + helplines = '\n' + ' '.join(result) + sys.stdout.write(helplines) + sys.exit(0) + + command = convert(tcpdump, args) + call(f'{command} -i {ifname}') |