diff options
Diffstat (limited to 'src/op_mode/show_nat66_translations.py')
| -rwxr-xr-x | src/op_mode/show_nat66_translations.py | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/src/op_mode/show_nat66_translations.py b/src/op_mode/show_nat66_translations.py deleted file mode 100755 index 045d64065..000000000 --- a/src/op_mode/show_nat66_translations.py +++ /dev/null @@ -1,204 +0,0 @@ -#!/usr/bin/env python3 -# -# Copyright (C) 2020 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/>. - -''' -show nat translations -''' - -import os -import sys -import ipaddress -import argparse -import xmltodict - -from vyos.util import popen -from vyos.util import DEVNULL - -conntrack = '/usr/sbin/conntrack' - -verbose_format = "%-20s %-18s %-20s %-18s" -normal_format = "%-20s %-20s %-4s %-8s %s" - - -def headers(verbose, pipe): - if verbose: - return verbose_format % ('Pre-NAT src', 'Pre-NAT dst', 'Post-NAT src', 'Post-NAT dst') - return normal_format % ('Pre-NAT', 'Post-NAT', 'Prot', 'Timeout', 'Type' if pipe else '') - - -def command(srcdest, proto, ipaddr): - command = f'{conntrack} -o xml -L -f ipv6' - - if proto: - command += f' -p {proto}' - - if srcdest == 'source': - command += ' -n' - if ipaddr: - command += f' --orig-src {ipaddr}' - if srcdest == 'destination': - command += ' -g' - if ipaddr: - command += f' --orig-dst {ipaddr}' - - return command - - -def run(command): - xml, code = popen(command,stderr=DEVNULL) - if code: - sys.exit('conntrack failed') - return xml - - -def content(xmlfile): - xml = '' - with open(xmlfile,'r') as r: - xml += r.read() - return xml - - -def pipe(): - xml = '' - while True: - line = sys.stdin.readline() - xml += line - if '</conntrack>' in line: - break - - sys.stdin = open('/dev/tty') - return xml - - -def process(data, stats, protocol, pipe, verbose, flowtype=''): - if not data: - return - - parsed = xmltodict.parse(data) - - print(headers(verbose, pipe)) - - # to help the linter to detect typos - ORIGINAL = 'original' - REPLY = 'reply' - INDEPENDANT = 'independent' - SPORT = 'sport' - DPORT = 'dport' - SRC = 'src' - DST = 'dst' - - for rule in parsed['conntrack']['flow']: - src, dst, sport, dport, proto = {}, {}, {}, {}, {} - packet_count, byte_count = {}, {} - timeout, use = 0, 0 - - rule_type = rule.get('type', '') - - for meta in rule['meta']: - # print(meta) - direction = meta['@direction'] - - if direction in (ORIGINAL, REPLY): - if 'layer3' in meta: - l3 = meta['layer3'] - src[direction] = l3[SRC] - dst[direction] = l3[DST] - - if 'layer4' in meta: - l4 = meta['layer4'] - sp = l4.get(SPORT, '') - dp = l4.get(DPORT, '') - if sp: - sport[direction] = sp - if dp: - dport[direction] = dp - proto[direction] = l4.get('@protoname','') - - if stats and 'counters' in meta: - packet_count[direction] = meta['packets'] - byte_count[direction] = meta['bytes'] - continue - - if direction == INDEPENDANT: - timeout = meta['timeout'] - use = meta['use'] - continue - - in_src = '%s:%s' % (src[ORIGINAL], sport[ORIGINAL]) if ORIGINAL in sport else src[ORIGINAL] - in_dst = '%s:%s' % (dst[ORIGINAL], dport[ORIGINAL]) if ORIGINAL in dport else dst[ORIGINAL] - - # inverted the the perl code !!? - out_dst = '%s:%s' % (dst[REPLY], dport[REPLY]) if REPLY in dport else dst[REPLY] - out_src = '%s:%s' % (src[REPLY], sport[REPLY]) if REPLY in sport else src[REPLY] - - if flowtype == 'source': - v = ORIGINAL in sport and REPLY in dport - f = '%s:%s' % (src[ORIGINAL], sport[ORIGINAL]) if v else src[ORIGINAL] - t = '%s:%s' % (dst[REPLY], dport[REPLY]) if v else dst[REPLY] - else: - v = ORIGINAL in dport and REPLY in sport - f = '%s:%s' % (dst[ORIGINAL], dport[ORIGINAL]) if v else dst[ORIGINAL] - t = '%s:%s' % (src[REPLY], sport[REPLY]) if v else src[REPLY] - - # Thomas: I do not believe proto should be an option - p = proto.get('original', '') - if protocol and p != protocol: - continue - - if verbose: - msg = verbose_format % (in_src, in_dst, out_dst, out_src) - p = f'{p}: ' if p else '' - msg += f'\n {p}{f} ==> {t}' - msg += f' timeout: {timeout}' if timeout else '' - msg += f' use: {use} ' if use else '' - msg += f' type: {rule_type}' if rule_type else '' - print(msg) - else: - print(normal_format % (f, t, p, timeout, rule_type if rule_type else '')) - - if stats: - for direction in ('original', 'reply'): - if direction in packet_count: - print(' %-8s: packets %s, bytes %s' % direction, packet_count[direction], byte_count[direction]) - - -def main(): - parser = argparse.ArgumentParser(description=sys.modules[__name__].__doc__) - parser.add_argument('--verbose', help='provide more details about the flows', action='store_true') - parser.add_argument('--proto', help='filter by protocol', default='', type=str) - parser.add_argument('--file', help='read the conntrack xml from a file', type=str) - parser.add_argument('--stats', help='add usage statistics', action='store_true') - parser.add_argument('--type', help='NAT type (source, destination)', required=True, type=str) - parser.add_argument('--ipaddr', help='source ip address to filter on', type=ipaddress.ip_address) - parser.add_argument('--pipe', help='read conntrack xml data from stdin', action='store_true') - - arg = parser.parse_args() - - if arg.type not in ('source', 'destination'): - sys.exit('Unknown NAT type!') - - if arg.pipe: - process(pipe(), arg.stats, arg.proto, arg.pipe, arg.verbose, arg.type) - elif arg.file: - process(content(arg.file), arg.stats, arg.proto, arg.pipe, arg.verbose, arg.type) - else: - try: - process(run(command(arg.type, arg.proto, arg.ipaddr)), arg.stats, arg.proto, arg.pipe, arg.verbose, arg.type) - except: - pass - -if __name__ == '__main__': - main() |