/usr/share/perl5/Parse/Netstat/linux.pm is in libparse-netstat-perl 0.12-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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our $DATE = '2015-09-03'; # DATE
our $VERSION = '0.12'; # VERSION
use 5.010001;
use strict;
use warnings;
use Exporter;
our @ISA = qw(Exporter);
our @EXPORT_OK = qw(parse_netstat);
our %SPEC;
$SPEC{parse_netstat} = {
v => 1.1,
summary => 'Parse the output of Linux "netstat" command',
description => <<'_',
Netstat can be called with `-n` (show raw IP addresses and port numbers instead
of hostnames or port names) or without. It can be called with `-a` (show all
listening and non-listening socket) option or without. And can be called with
`-p` (show PID/program names) or without.
_
args => {
output => {
summary => 'Output of netstat command',
schema => 'str*',
req => 1,
},
tcp => {
summary => 'Whether to parse TCP (and TCP6) connections',
schema => [bool => default => 1],
},
udp => {
summary => 'Whether to parse UDP (and UDP6) connections',
schema => [bool => default => 1],
},
unix => {
summary => 'Whether to parse Unix socket connections',
schema => [bool => default => 1],
},
},
};
sub parse_netstat {
my %args = @_;
my $output = $args{output} or return [400, "Please specify output"];
my $tcp = $args{tcp} // 1;
my $udp = $args{udp} // 1;
my $unix = $args{unix} // 1;
my $in_unix;
my $in_unix_header;
my @conns;
my $i = 0;
for my $line (split /^/, $output) {
$i++;
my %k;
if ($line =~ /^tcp/ && $tcp) {
#Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
#tcp 0 0 0.0.0.0:8898 0.0.0.0:* LISTEN 5566/daemon2.pl [pa
$line =~ m!^(?P<proto>tcp[46]?) \s+ (?P<recvq>\d+) \s+ (?P<sendq>\d+)\s+
(?P<local_host>\S+?):(?P<local_port>\w+)\s+
(?P<foreign_host>\S+?):(?P<foreign_port>\w+|\*)\s+
(?P<state>\S+) (?: \s+ (?:
(?P<pid>\d+)/(?P<program>.+?) |
-
))? \s*$!x
or return [400, "Can't parse tcp line (#$i): $line"];
%k = %+;
} elsif ($line =~ /^udp/ && $udp) {
#udp 0 0 0.0.0.0:631 0.0.0.0:* 2769/cupsd
$line =~ m!^(?P<proto>udp[46]?) \s+ (?P<recvq>\d+) \s+ (?P<sendq>\d+) \s+
(?P<local_host>\S+?):(?P<local_port>\w+|\*)\s+
(?P<foreign_host>\S+?):(?P<foreign_port>\w+|\*)
(?: \s+
(?P<state>\S+)?
(?: \s+ (?:
(?P<pid>\d+)/(?P<program>.+?) |
-
))?
)? \s*$!x
or return [400, "Can't parse udp line (#$i): $line"];
%k = %+;
} elsif ($line =~ /^unix/ && $unix) {
#Proto RefCnt Flags Type State I-Node PID/Program name Path
# unix 2 [ ACC ] STREAM LISTENING 650654 30463/gconfd-2 /tmp/orbit-t1/linc-76ff-0-3fc1dd3f2f2
$line =~ m!^(?P<proto>unix) \s+ (?P<refcnt>\d+) \s+
\[\s*(?P<flags>\S*)\s*\] \s+ (?P<type>\S+) \s+
(?P<state>\S+|\s+) \s+ (?P<inode>\d+) \s+
(?: (?: (?P<pid>\d+)/(?P<program>.+?) | - ) \s+)?
(?P<path>.*?)\s*$!x
or return [400, "Can't parse unix line (#$i): $line"];
%k = %+;
} else {
next;
}
push @conns, \%k;
}
[200, "OK", {active_conns => \@conns}];
}
1;
# ABSTRACT: Parse the output of Linux "netstat" command
__END__
=pod
=encoding UTF-8
=head1 NAME
Parse::Netstat::linux - Parse the output of Linux "netstat" command
=head1 VERSION
This document describes version 0.12 of Parse::Netstat::linux (from Perl distribution Parse-Netstat), released on 2015-09-03.
=head1 SYNOPSIS
use Parse::Netstat qw(parse_netstat);
my $res = parse_netstat(output=>join("", `netstat -anp`), flavor=>"linux");
Sample `netstat -anp` output:
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:1027 0.0.0.0:* LISTEN -
tcp 0 0 builder.localdomain:1028 *:* LISTEN
tcp 0 0 127.0.0.1:58159 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:58160 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:7634 0.0.0.0:* LISTEN -
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN -
tcp 0 0 0.0.0.0:631 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1234/program with space
tcp 0 0 192.168.0.103:44922 1.2.3.4:143 ESTABLISHED 25820/thunderbird-b
tcp6 0 0 ::1:1028 :::* LISTEN -
udp 0 0 0.0.0.0:631 0.0.0.0:* -
udp 0 0 192.168.0.103:56668 0.0.0.0:* -
udp 0 0 192.168.0.103:52753 0.0.0.0:* 8888/opera
udp6 0 0 :::42069 :::* -
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags Type State I-Node PID/Program name Path
unix 2 [ ] DGRAM 6906 - /var/spool/postfix/dev/log
unix 2 [ ACC ] STREAM LISTENING 650654 - /tmp/orbit-t1/linc-76ff-0-3fc1dd3f2f2
unix 2 [ ACC ] STREAM LISTENING 1121541 16933/kate 123 /tmp/orbit-s1/linc-4225-0-267d23358095e
Sample result:
[
200,
"OK",
{
active_conns => [
{
foreign_host => "0.0.0.0",
foreign_port => "*",
local_host => "127.0.0.1",
local_port => 1027,
proto => "tcp",
recvq => 0,
sendq => 0,
state => "LISTEN",
},
{
foreign_host => "*",
foreign_port => "*",
local_host => "builder.localdomain",
local_port => 1028,
proto => "tcp",
recvq => 0,
sendq => 0,
state => "LISTEN",
},
{
foreign_host => "0.0.0.0",
foreign_port => "*",
local_host => "127.0.0.1",
local_port => 58159,
proto => "tcp",
recvq => 0,
sendq => 0,
state => "LISTEN",
},
{
foreign_host => "0.0.0.0",
foreign_port => "*",
local_host => "127.0.0.1",
local_port => 58160,
proto => "tcp",
recvq => 0,
sendq => 0,
state => "LISTEN",
},
{
foreign_host => "0.0.0.0",
foreign_port => "*",
local_host => "127.0.0.1",
local_port => 7634,
proto => "tcp",
recvq => 0,
sendq => 0,
state => "LISTEN",
},
{
foreign_host => "0.0.0.0",
foreign_port => "*",
local_host => "0.0.0.0",
local_port => 22,
proto => "tcp",
recvq => 0,
sendq => 0,
state => "LISTEN",
},
{
foreign_host => "0.0.0.0",
foreign_port => "*",
local_host => "0.0.0.0",
local_port => 631,
proto => "tcp",
recvq => 0,
sendq => 0,
state => "LISTEN",
},
{
foreign_host => "0.0.0.0",
foreign_port => "*",
local_host => "127.0.0.1",
local_port => 25,
pid => 1234,
program => "program with space",
proto => "tcp",
recvq => 0,
sendq => 0,
state => "LISTEN",
},
{
foreign_host => "1.2.3.4",
foreign_port => 143,
local_host => "192.168.0.103",
local_port => 44922,
pid => 25820,
program => "thunderbird-b",
proto => "tcp",
recvq => 0,
sendq => 0,
state => "ESTABLISHED",
},
{
foreign_host => "::",
foreign_port => "*",
local_host => "::1",
local_port => 1028,
proto => "tcp6",
recvq => 0,
sendq => 0,
state => "LISTEN",
},
{
foreign_host => "0.0.0.0",
foreign_port => "*",
local_host => "0.0.0.0",
local_port => 631,
proto => "udp",
recvq => 0,
sendq => 0,
state => "-",
},
{
foreign_host => "0.0.0.0",
foreign_port => "*",
local_host => "192.168.0.103",
local_port => 56668,
proto => "udp",
recvq => 0,
sendq => 0,
state => "-",
},
{
foreign_host => "0.0.0.0",
foreign_port => "*",
local_host => "192.168.0.103",
local_port => 52753,
proto => "udp",
recvq => 0,
sendq => 0,
state => "8888/opera",
},
{
foreign_host => "::",
foreign_port => "*",
local_host => "::",
local_port => 42069,
proto => "udp6",
recvq => 0,
sendq => 0,
state => "-",
},
{
flags => "",
inode => 6906,
path => "/var/spool/postfix/dev/log",
proto => "unix",
refcnt => 2,
state => " ",
type => "DGRAM",
},
{
flags => "ACC",
inode => 650654,
path => "/tmp/orbit-t1/linc-76ff-0-3fc1dd3f2f2",
proto => "unix",
refcnt => 2,
state => "LISTENING",
type => "STREAM",
},
{
flags => "ACC",
inode => 1121541,
path => "123 /tmp/orbit-s1/linc-4225-0-267d23358095e",
pid => 16933,
program => "kate",
proto => "unix",
refcnt => 2,
state => "LISTENING",
type => "STREAM",
},
],
},
]
=head1 FUNCTIONS
=head2 parse_netstat(%args) -> [status, msg, result, meta]
Parse the output of Linux "netstat" command.
Netstat can be called with C<-n> (show raw IP addresses and port numbers instead
of hostnames or port names) or without. It can be called with C<-a> (show all
listening and non-listening socket) option or without. And can be called with
C<-p> (show PID/program names) or without.
Arguments ('*' denotes required arguments):
=over 4
=item * B<output>* => I<str>
Output of netstat command.
=item * B<tcp> => I<bool> (default: 1)
Whether to parse TCP (and TCP6) connections.
=item * B<udp> => I<bool> (default: 1)
Whether to parse UDP (and UDP6) connections.
=item * B<unix> => I<bool> (default: 1)
Whether to parse Unix socket connections.
=back
Returns an enveloped result (an array).
First element (status) is an integer containing HTTP status code
(200 means OK, 4xx caller error, 5xx function error). Second element
(msg) is a string containing error message, or 'OK' if status is
200. Third element (result) is optional, the actual result. Fourth
element (meta) is called result metadata and is optional, a hash
that contains extra information.
Return value: (any)
=head1 HOMEPAGE
Please visit the project's homepage at L<https://metacpan.org/release/Parse-Netstat>.
=head1 SOURCE
Source repository is at L<https://github.com/perlancar/perl-Parse-Netstat>.
=head1 BUGS
Please report any bugs or feature requests on the bugtracker website L<https://rt.cpan.org/Public/Dist/Display.html?Name=Parse-Netstat>
When submitting a bug or request, please include a test-file or a
patch to an existing test-file that illustrates the bug or desired
feature.
=head1 AUTHOR
perlancar <perlancar@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2015 by perlancar@cpan.org.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|