NAME

       POE::Component::IRC::Cookbook::Resolver - A bot that can resolve DNS records

SYNOPSIS

       This bot uses POE::Component::Client::DNS to DNS records for channel members.

DESCRIPTION

        #!/usr/bin/env perl

        use strict;
        use warnings;
        use IRC::Utils qw(parse_user);
        use POE;
        use POE::Component::Client::DNS;
        use POE::Component::IRC::State;
        use POE::Component::IRC::Plugin::AutoJoin;
        use POE::Component::IRC::Plugin::BotCommand;

        POE::Session->create(
            package_states => [
                main => [ qw(_start irc_botcmd_resolve dns_response) ]
            ],
        );

        $poe_kernel->run();

        sub _start {
            my $heap = $_[HEAP];
            my $irc = POE::Component::IRC::State->spawn(
                Nick   => 'resolver_bot',
                Server => 'irc.freenode.net',
            );
            $heap->{irc} = $irc;

            $irc->plugin_add('AutoJoin', POE::Component::IRC::Plugin::AutoJoin->new(
                Channels => [ '#test_channel1', '#test_channel2' ]
            ));

            $irc->plugin_add('BotCommand', POE::Component::IRC::Plugin::BotCommand->new(
                Commands => {
                   resolve => 'Usage: resolve <host>'
                }
            ));

            $heap->{dns} = POE::Component::Client::DNS->spawn();

            $irc->yield(register => 'botcmd_resolve');
            $irc->yield('connect');
            return;
        }

        sub irc_botcmd_resolve {
            my $dns = $_[HEAP]->{dns};
            my $nick = parse_user( $_[ARG0] );
            my ($channel, $host) = @_[ARG1, ARG2];

            my $res = $dns->resolve(
                event => 'dns_response',
                host => $host,
                context => {
                    channel => $channel,
                    nick    => $nick,
                },
            );

            $poe_kernel->yield(dns_response => $res) if $res;
            return;
        }

        sub dns_response {
            my $irc = $_[HEAP]->{irc};
            my $res = $_[ARG0];
            my @answers = $res->{response}
                ? map { $_->rdatastr } $res->{response}->answer()
                : ();

            $irc->yield(
                'privmsg',
                $res->{context}->{channel},
                $res->{context}->{nick} . (@answers
                    ? ": @answers"
                    : ': no answers for "' . $res->{host} . '"')
            );

            return;
        }

AUTHOR

       Hinrik Örn Sigurðsson, hinrik.sig@gmail.com

perl v5.26.1                                2018-01-0POE::Component::IRC::Cookbook::Resolver(3pm)