1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
#!/usr/bin/env python3
#
# Copyright (C) 2022-2023 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
import typing
import xmltodict
from tabulate import tabulate
from vyos.utils.process import cmd
from vyos.utils.process import run
import vyos.opmode
ArgFamily = typing.Literal['inet', 'inet6']
def _get_xml_data(family):
"""
Get conntrack XML output
"""
return cmd(f'sudo conntrack --dump --family {family} --output xml')
def _xml_to_dict(xml):
"""
Convert XML to dictionary
Return: dictionary
"""
parse = xmltodict.parse(xml, attr_prefix='')
# If only one conntrack entry we must change dict
if 'meta' in parse['conntrack']['flow']:
return dict(conntrack={'flow': [parse['conntrack']['flow']]})
return parse
def _get_raw_data(family):
"""
Return: dictionary
"""
xml = _get_xml_data(family)
if len(xml) == 0:
output = {'conntrack':
{
'error': True,
'reason': 'entries not found'
}
}
return output
return _xml_to_dict(xml)
def _get_raw_statistics():
entries = []
data = cmd('sudo conntrack -S')
data = data.replace(' \t', '').split('\n')
for entry in data:
entries.append(entry.split())
return entries
def get_formatted_statistics(entries):
headers = ["CPU", "Found", "Invalid", "Insert", "Insert fail", "Drop", "Early drop", "Errors", "Search restart"]
output = tabulate(entries, headers, numalign="left")
return output
def get_formatted_output(dict_data):
"""
:param xml:
:return: formatted output
"""
data_entries = []
if 'error' in dict_data['conntrack']:
return 'Entries not found'
for entry in dict_data['conntrack']['flow']:
orig_src, orig_dst, orig_sport, orig_dport = {}, {}, {}, {}
reply_src, reply_dst, reply_sport, reply_dport = {}, {}, {}, {}
proto = {}
for meta in entry['meta']:
direction = meta['direction']
if direction in ['original']:
if 'layer3' in meta:
orig_src = meta['layer3']['src']
orig_dst = meta['layer3']['dst']
if 'layer4' in meta:
if meta.get('layer4').get('sport'):
orig_sport = meta['layer4']['sport']
if meta.get('layer4').get('dport'):
orig_dport = meta['layer4']['dport']
proto = meta['layer4']['protoname']
if direction in ['reply']:
if 'layer3' in meta:
reply_src = meta['layer3']['src']
reply_dst = meta['layer3']['dst']
if 'layer4' in meta:
if meta.get('layer4').get('sport'):
reply_sport = meta['layer4']['sport']
if meta.get('layer4').get('dport'):
reply_dport = meta['layer4']['dport']
proto = meta['layer4']['protoname']
if direction == 'independent':
conn_id = meta['id']
# T6138 flowtable offload conntrack entries without 'timeout'
timeout = meta.get('timeout', 'n/a')
orig_src = f'{orig_src}:{orig_sport}' if orig_sport else orig_src
orig_dst = f'{orig_dst}:{orig_dport}' if orig_dport else orig_dst
reply_src = f'{reply_src}:{reply_sport}' if reply_sport else reply_src
reply_dst = f'{reply_dst}:{reply_dport}' if reply_dport else reply_dst
state = meta['state'] if 'state' in meta else ''
mark = meta['mark'] if 'mark' in meta else ''
zone = meta['zone'] if 'zone' in meta else ''
data_entries.append(
[conn_id, orig_src, orig_dst, reply_src, reply_dst, proto, state, timeout, mark, zone])
headers = ["Id", "Original src", "Original dst", "Reply src", "Reply dst", "Protocol", "State", "Timeout", "Mark",
"Zone"]
output = tabulate(data_entries, headers, numalign="left")
return output
def show(raw: bool, family: ArgFamily):
family = 'ipv6' if family == 'inet6' else 'ipv4'
conntrack_data = _get_raw_data(family)
if raw:
return conntrack_data
else:
return get_formatted_output(conntrack_data)
def show_statistics(raw: bool):
conntrack_statistics = _get_raw_statistics()
if raw:
return conntrack_statistics
else:
return get_formatted_statistics(conntrack_statistics)
if __name__ == '__main__':
try:
res = vyos.opmode.run(sys.modules[__name__])
if res:
print(res)
except (ValueError, vyos.opmode.Error) as e:
print(e)
sys.exit(1)
|
