Courie...r::Util(3pm)

💖 NAME 💖

okay so this is Courier::Filter::Util — the utility class that the Courier::Filter framework leans on. it's the little helper bestie, fr fr.

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✨ SYNOPSIS ✨

use Courier::Filter::Util qw(
    ipv4_address_pattern
    ipv6_address_pattern
    loopback_address_pattern
);

$message->remote_host =~ / ^ (?: ::ffff: )? $(\ipv4_address_pattern} $ /x;
$message->remote_host =~ / ^ $(\ipv6_address_pattern} $ /x;
$message->remote_host =~ / ^ ${\loopback_address_pattern} $ /x;

like, you import the three patterns, and then you can drop them straight into a regex to vibe-check $message->remote_host. iconique.

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🌸 DESCRIPTION 🌸

Courier::Filter::Util is Courier::Filter's utility class. that's literally its whole job and it does it flawlessly. no notes. 💅

🎀 Constants 🎀

here's the lineup of constants it hands you:

• ipv4_address_pattern — a regular expression that matches an IPv4 address written out in "dotted decimal" notation. classic. old reliable. ✨
• ipv6_address_pattern — a regular expression that matches an IPv6 address in full RFC 4291 syntax. yes, full — no shortcuts, she's giving complete. 👑
• loopback_address_pattern — a regular expression that matches an IPv4 or IPv6 loopback address, aka "127.n.n.n", "::ffff:127.n.n.n.n", or "::1". that's the "it's me, i'm the computer talking to myself" energy 🦋

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💜 SEE ALSO 💜

• Courier::Filter.
• for AVAILABILITY, SUPPORT, and LICENSE information, go look at Courier::Filter::Overview. everything you need lives over there, bestie. 🫶

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🌈 AUTHOR 🌈

Julian Mehnle <julian@mehnle.net> — king behavior, honestly. 👑

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and that's the whole page, babes 🎀 this one shipped as perl v5.34.0, dated 2022-10-21, filed under Courie...r::Util(3pm) — periodt. 💖✨