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#!/usr/bin/env python3
# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""A clone of 'netstat -antp' on Linux.
$ python3 scripts/netstat.py
Proto Local address Remote address Status PID Program name
tcp 127.0.0.1:48256 127.0.0.1:45884 ESTABLISHED 13646 chrome
tcp 127.0.0.1:47073 127.0.0.1:45884 ESTABLISHED 13646 chrome
tcp 127.0.0.1:47072 127.0.0.1:45884 ESTABLISHED 13646 chrome
tcp 127.0.0.1:45884 - LISTEN 13651 GoogleTalkPlugi
tcp 127.0.0.1:60948 - LISTEN 13651 GoogleTalkPlugi
tcp 172.17.42.1:49102 127.0.0.1:19305 CLOSE_WAIT 13651 GoogleTalkPlugi
tcp 172.17.42.1:55797 127.0.0.1:443 CLOSE_WAIT 13651 GoogleTalkPlugi
...
"""
import socket
from socket import AF_INET
from socket import SOCK_DGRAM
from socket import SOCK_STREAM
import psutil
AD = "-"
AF_INET6 = getattr(socket, 'AF_INET6', object())
proto_map = {
(AF_INET, SOCK_STREAM): 'tcp',
(AF_INET6, SOCK_STREAM): 'tcp6',
(AF_INET, SOCK_DGRAM): 'udp',
(AF_INET6, SOCK_DGRAM): 'udp6',
}
def main():
templ = "{:<5} {:<30} {:<30} {:<13} {:<6} {}"
header = templ.format(
"Proto",
"Local address",
"Remote address",
"Status",
"PID",
"Program name",
)
print(header)
proc_names = {}
for p in psutil.process_iter(['pid', 'name']):
proc_names[p.info['pid']] = p.info['name']
for c in psutil.net_connections(kind='inet'):
laddr = "{}:{}".format(*c.laddr)
raddr = ""
if c.raddr:
raddr = "{}:{}".format(*c.raddr)
name = proc_names.get(c.pid, '?') or ''
line = templ.format(
proto_map[(c.family, c.type)],
laddr,
raddr or AD,
c.status,
c.pid or AD,
name[:15],
)
print(line)
if __name__ == '__main__':
main()
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