Courier::Filter::Util - Utility class used by the Courier::Filter framework

    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;

Courier::Filter::Util is Courier::Filter's utility class.

The following constants are provided:

ipv4_address_pattern

A regular expression matching an IPv4 address in "dotted decimal" notation.

ipv6_address_pattern

A regular expression matching an IPv6 address in full RFC 4291 syntax.

loopback_address_pattern

A regular expression matching an IPv4 or IPv6 loopback address (127.n.n.n, ::ffff:127.n.n.n.n, ::1).

Courier::Filter.

For AVAILABILITY, SUPPORT, and LICENSE information, see Courier::Filter::Overview.

Julian Mehnle <julian@mehnle.net>