NAME
    POE::Component::IRC::Plugin::Blowfish - A POE::Component::IRC plugin
    that provides blowfish encryption.

SYNOPSIS
        #!/usr/bin/perl
        use strict;
        use warnings;
        use POE qw(Component::IRC Component::IRC::Plugin::Blowfish);

        my $nickname  = 'BlowFish' . $$;
        my $ircname   = 'Blowing fish';
        my $ircserver = 'irc.perl.org';
        my $port      = 6667;
        my $channel   = '#POE-Component-IRC-Plugin-Blowfish';
        my $bfkey     = 'secret';

        my $irc = POE::Component::IRC->spawn(
            nick         => $nickname,
            server       => $ircserver,
            port         => $port,
            ircname      => $ircname,
            debug        => 0,
            plugin_debug => 1,
            options      => { trace => 0 },
        ) or die "Oh noooo! $!";

        POE::Session->create(
            package_states => [ 'main' => [qw(_start irc_public irc_001 irc_join)], ],
        );

        $poe_kernel->run();
        exit 0;

        sub _start {

            # Create and load our plugin
            $irc->plugin_add( 'BlowFish' =>
                  POE::Component::IRC::Plugin::Blowfish->new( $channel => $bfkey ) );

            $irc->yield( register => 'all' );
            $irc->yield( connect  => {} );
            undef;
        }

        sub irc_001 {
            $irc->yield( join => $channel );
            undef;
        }

        sub irc_join {
            my ( $kernel, $sender, $channel ) = @_[ KERNEL, SENDER, ARG1 ];
            $kernel->post(
                $irc => privmsg => $channel => 'hello this is an encrypted message' );
            undef;
        }

        sub irc_public {
            my ( $kernel, $sender, $who, $where, $msg ) =
              @_[ KERNEL, SENDER, ARG0, ARG1, ARG2 ];
            my $nick = ( split /!/, $who )[0];
            my $chan = $where->[0];

            my @args = split /\s+/, $msg;
            my $cmd = shift @args;

            if ( $cmd eq '!setkey' ) {
                $kernel->yield( set_blowfish_key => (@args)[ 0, 1 ] );
            }

            elsif ( $cmd eq '!delkey' ) {
                $kernel->yield( del_blowfish_key => $args[0] );
            }

            elsif ( $cmd eq '!test' ) {
                $kernel->post(
                    $irc => privmsg => $chan => 'this is a test message...' );
            }
        }

DESCRIPTION
    POE::Component::IRC::Plugin::Blowfish, is a POE::Component::IRC plugin
    that provides a mechanism for encrypting and decrypting IRC messages
    using Crypt::Blowfish_PP. If there is a blowfish key set for a IRC
    channel this plugin will always encrypt and decrypt IRC messages of that
    channel. After the plugin has registered it will push itself to the
    first position in the plugin pipeline. This is necessary that all other
    plugins will get the decrypted IRC messages.

    This plugin is compatible to blowfish irssi plugin:
    <http://fish.sekure.us/irssi/>

CONSTRUCTOR
    new Creates a new plugin object. Takes a hash to set blowfish keys for
        channels:

            '#perl' => 'secret',
            '#poe' => 'foo',

        It's possible to change this later using "INPUT EVENTS".

INPUT EVENTS
    The plugin registers the following state handler within your session:

  set_blowfish_key
    Parameters: $channel $blowfish_key

    Set blowfish key for a channel. If there was a key set already it will
    be overwritten.

  del_blowfish_key
    Remove blowfish key from a channel.

    Parameters: $channel

AUTHOR
    Johannes 'plu' Plunien <plu@cpan.org>

SEE ALSO
    POE::Component::IRC Crypt::Blowfish_PP