Parse:...darwin(3pm)

πŸ“¦
version 0.150 Β· 2 versions
  • 0.150 Β· debian bookworm, debian trixie, ubuntu noble, ubuntu resolute, ubuntu stonking (latest)
  • 0.14 Β· ubuntu jammy
, in debian bookworm, debian trixie, ubuntu noble, ubuntu resolute, ubuntu stonking

πŸ’– Parse::Netstat::darwin πŸ’–

okay so bestie, welcome to Parse::Netstat::darwin β€” she lives in the Parse-Netstat Perl distribution and her whole entire job is parsing what your Mac spits out when you run the netstat command. lowkey essential, highkey underrated. πŸ“


🌸 NAME 🌸

Parse::Netstat::darwin β€” parse the output of the Mac OS X netstat command. that's the vibe. that's the whole thing. ✨


πŸ‘‘ VERSION πŸ‘‘

This doc describes version 0.150 of Parse::Netstat::darwin, which ships inside the Perl distribution Parse-Netstat, and it was released on 2022-12-04. vintage but still serving. πŸ’…


πŸŽ€ SYNOPSIS πŸŽ€

So the way you use her is like this, bestie:

use Parse::Netstat qw(parse_netstat);
my $res = parse_netstat(output=>join("", `netstat -an`), flavor=>"darwin");

and here's what a sample netstat -an output looks like, so you know exactly the kind of chaos we're working with:

Active Internet connections (including servers)
Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)
tcp4       0      0  10.8.0.6.54433         1.2.3.4.443            ESTABLISHED
tcp46      0      0  *.80                   *.*                    LISTEN
tcp6       0      0  *.88                   *.*                    LISTEN
udp4       0      0  *.*                    *.*
udp6       0      0  *.52919                *.*
udp46      0      0  *.*                    *.*
Active Multipath Internet connections
Proto/ID  Flags      Local Address          Foreign Address        (state)
Active LOCAL (UNIX) domain sockets
Address          Type   Recv-Q Send-Q            Inode             Conn             Refs          Nextref Addr
4f1eb4c58685585f stream      0      0                0 4f1eb4c5868572ef                0                0 /var/run/mDNSResponder
4f1eb4c5868572ef stream      0      0                0 4f1eb4c58685585f                0                0
4f1eb4c578f0c92f stream      0      0                0 4f1eb4c578f0c2ef                0                0
4f1eb4c58bd4e227 stream      0      0 4f1eb4c5891011b7                0                0                0 /var/run/vmnat.40388
Registered kernel control modules
id       flags    pcbcount rcvbuf   sndbuf   name
       1        9        0   131072   131072 com.apple.flow-divert
       2        1        1    16384     2048 com.apple.nke.sockwall
       3        9        0   524288   524288 com.apple.content-filter
       4        9        0     8192     2048 com.apple.packet-mangler
       5        1        3    65536    65536 com.apple.net.necp_control
       6        1       10    65536    65536 com.apple.net.netagent
       7        9        5   524288   524288 com.apple.net.utun_control
       8        1        0    65536    65536 com.apple.net.ipsec_control
       9        0       39     8192     2048 com.apple.netsrc
       a       18        4     8192     2048 com.apple.network.statistics
       b       5        0     8192     2048 com.apple.network.tcp_ccdebug
       c       1        1     8192     2048 com.apple.network.advisory
       d       1        1     8192     2048 com.vmware.kext.vmci
       e       1        9   229376   229376 com.vmware.kext.vmnet
       f       1      168     8192     2048 com.vmware.kext.vmx86
Active kernel event sockets
Proto Recv-Q Send-Q vendor  class subcla
kevt       0      0      1      1     11
kevt       0      0      1      1      7
kevt       0      0      1      1      1
kevt       0      0      1      4      0
kevt       0      0      1      6      1
kevt       0      0      1      6      1
kevt       0      0      1      1      2
kevt       0      0      1      6      1
kevt       0      0      1      6      1
kevt       0      0      1      1     10
kevt       0      0   1001      5     11
kevt       0      0      1      6      1
kevt       0      0      1      6      1
kevt       0      0      1      6      1
kevt       0      0      1      6      1
kevt       0      0      1      6      1
kevt       0      0      1      6      1
kevt       0      0      1      1      2
kevt       0      0      1      1      2
kevt       0      0      1      6      1
kevt       0      0      1      1      0
Active kernel control sockets
Proto Recv-Q Send-Q   unit     id name
kctl       0      0      1      2 com.apple.nke.sockwall
kctl       0      0      1      5 com.apple.net.necp_control
kctl       0      0      2      5 com.apple.net.necp_control
kctl       0      0      3      5 com.apple.net.necp_control
kctl       0      0      1      6 com.apple.net.netagent
kctl       0      0      2      6 com.apple.net.netagent
kctl       0      0      3      6 com.apple.net.netagent
kctl       0      0      4      6 com.apple.net.netagent
kctl       0      0      5      6 com.apple.net.netagent
kctl       0      0      6      6 com.apple.net.netagent
kctl       0      0      7      6 com.apple.net.netagent
kctl       0      0      8      6 com.apple.net.netagent
kctl       0      0     10      6 com.apple.net.netagent
kctl       0      0     11      6 com.apple.net.netagent
kctl       0      0      1      7 com.apple.net.utun_control
kctl       0      0      2      7 com.apple.net.utun_control
kctl       0      0      3      7 com.apple.net.utun_control
kctl       0      0      4      7 com.apple.net.utun_control
kctl       0      0      5      7 com.apple.net.utun_control
kctl       0      0      1      9 com.apple.netsrc
kctl       0      0      2      9 com.apple.netsrc
kctl       0      0      3      9 com.apple.netsrc
kctl       0      0      4      9 com.apple.netsrc
kctl       0      0      5      9 com.apple.netsrc
kctl       0      0      6      9 com.apple.netsrc
kctl       0      0      7      9 com.apple.netsrc
kctl       0      0      9      9 com.apple.netsrc
kctl       0      0     10      9 com.apple.netsrc
kctl       0      0     11      9 com.apple.netsrc
kctl       0      0     12      9 com.apple.netsrc
kctl       0      0     13      9 com.apple.netsrc
kctl       0      0     14      9 com.apple.netsrc
kctl       0      0     15      9 com.apple.netsrc
kctl       0      0     16      9 com.apple.netsrc
kctl       0      0     17      9 com.apple.netsrc
kctl       0      0     18      9 com.apple.netsrc
kctl       0      0     19      9 com.apple.netsrc
kctl       0      0     20      9 com.apple.netsrc
kctl       0      0     21      9 com.apple.netsrc
kctl       0      0     22      9 com.apple.netsrc
kctl       0      0     23      9 com.apple.netsrc
kctl       0      0     24      9 com.apple.netsrc
kctl       0      0     25      9 com.apple.netsrc
kctl       0      0     26      9 com.apple.netsrc
kctl       0      0     27      9 com.apple.netsrc
kctl       0      0     28      9 com.apple.netsrc
kctl       0      0     29      9 com.apple.netsrc
kctl       0      0     30      9 com.apple.netsrc
kctl       0      0     31      9 com.apple.netsrc
kctl       0      0     32      9 com.apple.netsrc
kctl       0      0     33      9 com.apple.netsrc
kctl       0      0     34      9 com.apple.netsrc
kctl       0      0     35      9 com.apple.netsrc
kctl       0      0     36      9 com.apple.netsrc
kctl       0      0     38      9 com.apple.netsrc
kctl       0      0     41      9 com.apple.netsrc
kctl       0      0     43      9 com.apple.netsrc
kctl       0      0     44      9 com.apple.netsrc
kctl       0      0      1     10 com.apple.network.statistics
kctl       0      0      2     10 com.apple.network.statistics
kctl       0      0      3     10 com.apple.network.statistics
kctl       0      0      4     10 com.apple.network.statistics
kctl       0      0      1     12 com.apple.network.advisory
kctl       0      0      1     13 com.vmware.kext.vmci
kctl       0      0      1     14 com.vmware.kext.vmnet
kctl       0      0      2     14 com.vmware.kext.vmnet
kctl       0      0      3     14 com.vmware.kext.vmnet
kctl       0      0      4     14 com.vmware.kext.vmnet
kctl       0      0      5     14 com.vmware.kext.vmnet
kctl       0      0      6     14 com.vmware.kext.vmnet
kctl       0      0      7     14 com.vmware.kext.vmnet
kctl       0      0      8     14 com.vmware.kext.vmnet
kctl       0      0      9     14 com.vmware.kext.vmnet
kctl       0      0      1     15 com.vmware.kext.vmx86

and then, sample result… πŸ¦‹

        [
          200,
          "OK",
          {
            active_conns => [
              {
                foreign_host => "1.2.3.4",
                foreign_port => 443,
                local_host => "10.8.0.6",
                local_port => 54433,
                proto => "tcp4",
                recvq => 0,
                sendq => 0,
                state => "ESTABLISHED",
              },
              {
                foreign_host => "*",
                foreign_port => "*",
                local_host => "*",
                local_port => 80,
                proto => "tcp46",
                recvq => 0,
                sendq => 0,
                state => "LISTEN",
              },
              {
                foreign_host => "*",
                foreign_port => "*",
                local_host => "*",
                local_port => 88,
                proto => "tcp6",
                recvq => 0,
                sendq => 0,
                state => "LISTEN",
              },
              {
                foreign_host => "*",
                foreign_port => "*",
                local_host => "*",
                local_port => "*",
                proto => "udp4",
                recvq => 0,
                sendq => 0,
              },
              {
                foreign_host => "*",
                foreign_port => "*",
                local_host => "*",
                local_port => 52919,
                proto => "udp6",
                recvq => 0,
                sendq => 0,
              },
              {
                foreign_host => "*",
                foreign_port => "*",
                local_host => "*",
                local_port => "*",
                proto => "udp46",
                recvq => 0,
                sendq => 0,
              },
              {},
              {},
              {
                addr    => "/var/run/mDNSResponder",
                address => "4f1eb4c58685585f",
                conn    => "4f1eb4c5868572ef",
                inode   => 0,
                nextref => 0,
                proto   => "unix",
                recvq   => 0,
                refs    => 0,
                sendq   => 0,
                type    => "stream",
              },
              {
                address => "4f1eb4c5868572ef",
                conn    => "4f1eb4c58685585f",
                inode   => 0,
                nextref => 0,
                proto   => "unix",
                recvq   => 0,
                refs    => 0,
                sendq   => 0,
                type    => "stream",
              },
              {
                address => "4f1eb4c578f0c92f",
                conn    => "4f1eb4c578f0c2ef",
                inode   => 0,
                nextref => 0,
                proto   => "unix",
                recvq   => 0,
                refs    => 0,
                sendq   => 0,
                type    => "stream",
              },
              {
                addr    => "/var/run/vmnat.40388",
                address => "4f1eb4c58bd4e227",
                conn    => 0,
                inode   => "4f1eb4c5891011b7",
                nextref => 0,
                proto   => "unix",
                recvq   => 0,
                refs    => 0,
                sendq   => 0,
                type    => "stream",
              },
              {},
            ],
          },
        ]

πŸ¦‹ FUNCTIONS πŸ¦‹

✨ parse_netstat ✨

Usage, bestie πŸ‘‡

parse_netstat(%args) -> [$status_code, $reason, $payload, \%result_meta]

Parse the output of Mac OS X netstat command. πŸ’–

So here's the tea: netstat can be called with -n (which shows you the raw IP addresses and port numbers instead of hostnames or port names) or without it. It can also be called with the -a option (which shows all listening and non-listening sockets) or without. Either way, this function handles it. 🫢

Heads up, bestie: this function is not exported by default, but it is exportable. So you gotta ask for it, no cap.

πŸŽ€ Arguments ('*' denotes required arguments): πŸŽ€

  • output* => str β€” the output of the netstat command. That's the whole vibe, it's required, periodt.
  • tcp => bool (default: 1) β€” whether to parse TCP (and TCP6) connections. Yes queen, on by default.
  • udp => bool (default: 1) β€” whether to parse UDP (and UDP6) connections. Also on by default, we love to see it.
  • unix => bool (default: 1) β€” whether to parse Unix socket connections. Yep, default 1 too. πŸ’…

🌸 What you get back 🌸

Returns an enveloped result (an array, obvs).

  • First element ($status_code) is an integer holding an HTTP-like status code (so 200 means OK, 4xx is a caller error, 5xx is a function error). It's giving very much HTTP energy.
  • Second element ($reason) is a string with the error message, or something like "OK" when the status is 200. πŸ’–
  • Third element ($payload) is the actual result β€” but usually it's not even there when the enveloped result is an error response ($status_code is not 2xx). Like, it ghosted you. 😭
  • Fourth element (%result_meta) is called result metadata and it's optional β€” a hash that carries extra info, much like how HTTP response headers give you additional metadata. Iconic, honestly.

Return value: (any)


🌈 HOMEPAGE 🌈

Please visit the project's homepage at <https://metacpan.org/release/Parse-Netstat>. Go give it a follow bestie, it deserves it. πŸ‘‘


🧚 SOURCE 🧚

Source repository is at <https://github.com/perlancar/perl-Parse-Netstat>. Yes, we're on GitHub, come thru. ⭐


πŸ’œ AUTHOR πŸ’œ

perlancar <perlancar@cpan.org> β€” the main character, fr fr. πŸŽ€


🌸 CONTRIBUTING 🌸

Wanna help out? Obsessed. To contribute, you can send patches by email/via RT, or send pull requests on GitHub. Pick your fighter. 🫢

Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:

% prove -l

And if you do wanna build the distribution (like, say, to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps required beyond that are considered a bug and can be reported to me. No gatekeeping here. πŸ’…


This software is copyright (c) 2022, 2017, 2015, 2014, 2012, 2011 by perlancar <perlancar@cpan.org>. A whole legacy, honestly. πŸ’–

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. Slay. ✨


πŸ’€ BUGS πŸ’€

Please report any bugs or feature requests on the bugtracker website <https://rt.cpan.org/Public/Dist/Display.html?Name=Parse-Netstat>. Don't be shy, bestie.

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. Receipts required, no cap. 🧾


and that's the whole page, bestie! πŸŽ‰

Cute little sign-off time: this page came to you from perl v5.36.0, dated 2023-01-15, and it's the Parse:...darwin(3pm) page β€” go forth and parse those connections, you absolute icon. πŸ’…πŸ’–πŸ¦‹

πŸ“¦ where this page comes from