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diff --git a/op-mode-definitions/nat.xml.in b/op-mode-definitions/nat.xml.in
index 6398c0e07..13e7fd81d 100644
--- a/op-mode-definitions/nat.xml.in
+++ b/op-mode-definitions/nat.xml.in
@@ -1,99 +1,119 @@
<?xml version="1.0" encoding="UTF-8"?>
<interfaceDefinition>
<node name="show">
<children>
<node name="nat">
<properties>
<help>Show IPv4 Network Address Translation (NAT) information</help>
</properties>
<children>
<node name="cgnat">
<properties>
<help>Show Carrier-Grade Network Address Translation (CGNAT)</help>
</properties>
<children>
<node name="allocation">
<properties>
<help>Show allocated CGNAT parameters</help>
</properties>
+ <children>
+ <tagNode name="external-address">
+ <properties>
+ <help>Show CGNAT allocations for an external IP address</help>
+ <completionHelp>
+ <list>&lt;x.x.x.x&gt;</list>
+ </completionHelp>
+ </properties>
+ <command>sudo ${vyos_op_scripts_dir}/cgnat.py show_allocation --external-address "$6"</command>
+ </tagNode>
+ <tagNode name="internal-address">
+ <properties>
+ <help>Show CGNAT allocations for an internal IP address</help>
+ <completionHelp>
+ <list>&lt;x.x.x.x&gt;</list>
+ </completionHelp>
+ </properties>
+ <command>sudo ${vyos_op_scripts_dir}/cgnat.py show_allocation --internal-address "$6"</command>
+ </tagNode>
+ </children>
<command>sudo ${vyos_op_scripts_dir}/cgnat.py show_allocation</command>
</node>
</children>
</node>
<node name="source">
<properties>
<help>Show source IPv4 to IPv4 Network Address Translation (NAT) information</help>
</properties>
<children>
<node name="rules">
<properties>
<help>Show configured source NAT rules</help>
</properties>
<command>sudo ${vyos_op_scripts_dir}/nat.py show_rules --direction source --family inet</command>
</node>
<node name="statistics">
<properties>
<help>Show statistics for configured source NAT rules</help>
</properties>
<command>sudo ${vyos_op_scripts_dir}/nat.py show_statistics --direction source --family inet</command>
</node>
<node name="translations">
<properties>
<help>Show active source NAT translations</help>
</properties>
<children>
<tagNode name="address">
<properties>
<help>Show active source NAT translations for an IP address</help>
<completionHelp>
<list>&lt;x.x.x.x&gt;</list>
</completionHelp>
</properties>
<command>sudo ${vyos_op_scripts_dir}/nat.py show_translations --direction source --family inet --address "$6"</command>
</tagNode>
</children>
<command>sudo ${vyos_op_scripts_dir}/nat.py show_translations --direction source --family inet</command>
</node>
</children>
</node>
<node name="destination">
<properties>
<help>Show destination IPv4 to IPv4 Network Address Translation (NAT) information</help>
</properties>
<children>
<node name="rules">
<properties>
<help>Show configured destination NAT rules</help>
</properties>
<command>sudo ${vyos_op_scripts_dir}/nat.py show_rules --direction destination --family inet</command>
</node>
<node name="statistics">
<properties>
<help>Show statistics for configured destination NAT rules</help>
</properties>
<command>sudo ${vyos_op_scripts_dir}/nat.py show_statistics --direction destination --family inet</command>
</node>
<node name="translations">
<properties>
<help>Show active destination NAT translations</help>
</properties>
<children>
<tagNode name="address">
<properties>
<help>Show active NAT destination translations for an IP address</help>
<completionHelp>
<list>&lt;x.x.x.x&gt;</list>
</completionHelp>
</properties>
<command>sudo ${vyos_op_scripts_dir}/nat.py show_translations --direction destination --family inet --address "$6"</command>
</tagNode>
</children>
<command>sudo ${vyos_op_scripts_dir}/nat.py show_translations --direction destination --family inet</command>
</node>
</children>
</node>
</children>
</node>
</children>
</node>
</interfaceDefinition>
diff --git a/src/op_mode/cgnat.py b/src/op_mode/cgnat.py
index e58b15809..9ad8f92f9 100755
--- a/src/op_mode/cgnat.py
+++ b/src/op_mode/cgnat.py
@@ -1,74 +1,96 @@
#!/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 json
import sys
+import typing
from tabulate import tabulate
import vyos.opmode
from vyos.configquery import ConfigTreeQuery
from vyos.utils.process import cmd
CGNAT_TABLE = 'cgnat'
-def _get_raw_data():
- """ Get CGNAT dictionary
- """
+def _get_raw_data(external_address: str = '', internal_address: str = '') -> list[dict]:
+ """Get CGNAT dictionary and filter by external or internal address if provided."""
cmd_output = cmd(f'nft --json list table ip {CGNAT_TABLE}')
data = json.loads(cmd_output)
- return data
-
-def _get_formatted_output(data):
elements = data['nftables'][2]['map']['elem']
allocations = []
for elem in elements:
internal = elem[0] # internal
external = elem[1]['concat'][0] # external
start_port = elem[1]['concat'][1]['range'][0]
end_port = elem[1]['concat'][1]['range'][1]
port_range = f'{start_port}-{end_port}'
- allocations.append((internal, external, port_range))
+ if (internal_address and internal != internal_address) or (
+ external_address and external != external_address
+ ):
+ continue
+
+ allocations.append(
+ {
+ 'internal_address': internal,
+ 'external_address': external,
+ 'port_range': port_range,
+ }
+ )
+
+ return allocations
+
+
+def _get_formatted_output(allocations: list[dict]) -> str:
+ # Convert the list of dictionaries to a list of tuples for tabulate
headers = ['Internal IP', 'External IP', 'Port range']
- output = tabulate(allocations, headers, numalign="left")
+ data = [
+ (alloc['internal_address'], alloc['external_address'], alloc['port_range'])
+ for alloc in allocations
+ ]
+ output = tabulate(data, headers, numalign="left")
return output
-def show_allocation(raw: bool):
+def show_allocation(
+ raw: bool,
+ external_address: typing.Optional[str],
+ internal_address: typing.Optional[str],
+) -> str:
config = ConfigTreeQuery()
if not config.exists('nat cgnat'):
raise vyos.opmode.UnconfiguredSubsystem('CGNAT is not configured')
if raw:
- return _get_raw_data()
+ return _get_raw_data(external_address, internal_address)
else:
- raw_data = _get_raw_data()
+ raw_data = _get_raw_data(external_address, internal_address)
return _get_formatted_output(raw_data)
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)

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