NAME

POE::Component::Server::IRC - A fully event-driven networkable IRC server daemon module.

SYNOPSIS

# A fairly simple example:
use strict;
use warnings;
use POE qw(Component::Server::IRC);

my %config = (
    servername => 'simple.poco.server.irc', 
    nicklen    => 15,
    network    => 'SimpleNET'
);

my $pocosi = POE::Component::Server::IRC->spawn( config => \%config );

POE::Session->create(
    package_states => [
        'main' => [qw(_start _default)],
    ],
    heap => { ircd => $pocosi },
);

$poe_kernel->run();

sub _start {
    my ($kernel, $heap) = @_[KERNEL, HEAP];

    $heap->{ircd}->yield('register', 'all');

    # Anyone connecting from the loopback gets spoofed hostname
    $heap->{ircd}->add_auth(
        mask     => '*@localhost',
        spoof    => 'm33p.com',
        no_tilde => 1,
    );

    # We have to add an auth as we have specified one above.
    $heap->{ircd}->add_auth(mask => '*@*');

    # Start a listener on the 'standard' IRC port.
    $heap->{ircd}->add_listener(port => 6667);

    # Add an operator who can connect from localhost
    $heap->{ircd}->add_operator(
        {
            username => 'moo',
            password => 'fishdont',
        }
    );
}

sub _default {
    my ($event, $args) = @_[ARG0 .. $#_];

    print "$event: ";
    for my $arg (@$args) {
        if (ref($arg) eq 'ARRAY') {
            print "[", join ( ", ", @$arg ), "] ";
        }
        elsif (ref($arg) eq 'HASH') {
            print "{", join ( ", ", %$arg ), "} ";
        }
        else {
            print "'$arg' ";
        }
    }

    print "\n";
 }

DESCRIPTION

POE::Component::Server::IRC is a POE component which implements an IRC server (also referred to as an IRC daemon or IRCd). It should be compliant with the pertient IRC RFCs and is based on reverse engineering Hybrid IRCd behaviour with regards to interactions with IRC clients and other IRC servers.

Yes, that's right. POE::Component::Server::IRC is capable of linking to foreign IRC networks. It supports the TS6 server to server protocol and has been tested with linking to Hybrid-8 based networks. It should in theory work with any TS6-based IRC network.

POE::Component::Server::IRC also has a services API, which enables one to extend the IRCd to create IRC Services. This is fully event-driven (of course =]). There is also a Plugin system, similar to that sported by POE::Component::IRC.

Note: This is a subclass of POE::Component::Server::IRC::Backend. You should read its documentation too.

CONSTRUCTOR

`spawn`

Returns a new instance of the component. Takes the following parameters:

'config', a hashref of configuration options, see the configure method for details.

Any other parameters will be passed along to POE::Component::Server::IRC::Backend's create method.

If the component is spawned from within another session then that session will automagically be registered with the component to receive events and be sent an ircd_registered event.

METHODS

Information

`server_name`

No arguments, returns the name of the ircd.

`server_version`

No arguments, returns the software version of the ircd.

`server_created`

No arguments, returns a string signifying when the ircd was created.

`server_config`

Takes one argument, the server configuration value to query.

Configuration

These methods provide mechanisms for configuring and controlling the IRCd component.

`configure`

Configures your new shiny IRCd.

Takes a number of parameters:

'servername', a name to bless your shiny new IRCd with, defaults to 'poco.server.irc';
'serverdesc', a description for your IRCd, defaults to 'Poco? POCO? POCO!';
'network', the name of the IRC network you will be creating, defaults to 'poconet';
'nicklen', the max length of nicknames to support, defaults to 9. Note: the nicklen must be the same on all servers on your IRC network;
'maxtargets', max number of targets a user can send PRIVMSG/NOTICE's to, defaults to 4;
'maxchannels', max number of channels users may join, defaults to 15;
'version', change the server version that is reported;
'admin', an arrayref consisting of the 3 lines that will be returned by ADMIN;
'info', an arrayref consisting of lines to be returned by INFO;
'ophacks', set to true to enable oper hacks. Default is false;
'whoisactually', setting this to a false value means that only opers can see 338. Defaults to true;
'sid', servers unique ID. This is three characters long and must be in the form [0-9][A-Z0-9][A-Z0-9]. Specifying this enables TS6.

`add_auth`

By default the IRCd allows any user to connect to the server without a password. Configuring auths enables you to control who can connect and set passwords required to connect.

Takes the following parameters:

'mask', a user@host or user@ipaddress mask to match against, mandatory;
'password', if specified, any client matching the mask must provide this to connect;
'spoof', if specified, any client matching the mask will have their hostname changed to this;
'no_tilde', if specified, the '~' prefix is removed from their username;
'exceed_limit', if specified, any client matching the mask will not have their connection limited, if the server is full;
'kline_exempt', if true, any client matching the mask will be exempt from KLINEs and RKLINEs;
'resv_exempt', if true, any client matching the mask will be exempt from RESVs;
'can_flood', if true, any client matching the mask will be exempt from flood protection;
'need_ident', if true, any client matching the mask will be required to have a valid response to Ident queries;

Auth masks are processed in order of addition.

If auth masks have been defined, then a connecting user *must* match one of the masks in order to be authorised to connect. This is a feature >;)

`del_auth`

Takes a single argument, the mask to remove.

`add_operator`

This adds an O line to the IRCd. Takes a number of parameters:

'username', the username of the IRC oper, mandatory;
'password', the password, mandatory;
'ipmask', either a scalar ipmask or an arrayref of addresses or CIDRs as understood by Net::CIDR::cidrvalidate;
'ssl_required', set to true to require that the oper is connected securely using SSL/TLS;
'certfp', specify the fingerprint of the oper's client certificate to verify;

A scalar ipmask can contain '*' to match any number of characters or '?' to match one character. If no 'ipmask' is provided, operators are only allowed to OPER from the loopback interface.

'password' can be either plain-text, crypt'd or unix/apache md5. See the mkpasswd function in POE::Component::Server::IRC::Common for how to generate passwords.

'ssl_required' and 'certfp' obviously both require that the server supports SSL/TLS connections. 'certfp' is the SHA256 digest fingerprint of the client certificate. This can be obtained from the PEM formated cert using one of the following methods:

OpenSSL/LibreSSL:
  openssl x509 -sha256 -noout -fingerprint -in cert.pem | sed -e 's/^.*=//;s/://g'

GnuTLS:
  certtool -i < cert.pem | egrep -A 1 'SHA256 fingerprint'

`del_operator`

Takes a single argument, the username to remove.

`add_peer`

Adds peer servers that we will allow to connect to us and who we will connect to. Takes the following parameters:

'name', the name of the server. This is the IRC name, not hostname, mandatory;
'pass', the password they must supply to us, mandatory;
'rpass', the password we need to supply to them, mandatory;
'type', the type of server, 'c' for a connecting server, 'r' for one that we will connect to;
'raddress', the remote address to connect to, implies 'type' eq 'r';
'rport', the remote port to connect to, default is 6667;
'ipmask', either a scalar ipmask or an arrayref of addresses or CIDRs as understood by Net::CIDR::cidrvalidate;
'auto', if set to true value will automatically connect to remote server if type is 'r';
'zip', set to a true value to enable ziplink support. This must be done on both ends of the connection. Requires POE::Filter::Zlib::Stream;
'service', set to a true value to enable the peer to be accepted as a services peer.
'ssl', set to a true value to enable SSL/TLS support. This must be done on both ends of the connection. Requires POE::Component::SSLify.
'certfp', specify the fingerprint of the peer's client certificate to verify;

'certfp' is the SHA256 digest fingerprint of the client certificate. This can be obtained from the PEM formated cert using one of the following methods:

OpenSSL/LibreSSL:
  openssl x509 -sha256 -noout -fingerprint -in cert.pem | sed -e 's/^.*=//;s/://g'

GnuTLS:
  certtool -i < cert.pem | egrep -A 1 'SHA256 fingerprint'

`del_peer`

Takes a single argument, the peer to remove. This does not disconnect the said peer if it is currently connected.

`add_service`

Adds a service peer. A service peer is a peer that is accepted to send service commands SVS*. Takes a single argument the service peer to add. This does not have to be a directly connected peer as defined with add_peer.

`del_service`

Takes a single argument, the service peer to remove. This does not disconnect the said service peer, but it will deny the peer access to service commands.

`add_pseudo`

Adds a pseudo command, also known as a service alias. The command is transformed by the server into a PRIVMSG and sent to the given target.

Takes several arguments:

'cmd', (mandatory) command/alias to be added.
'name', (mandatory) the service name, eg. NickServ, this is used in error messages reported to users.
'target', (mandatory) the target for the command in nick!user@host format.
'prepend', (optional) text that will prepended to the user's message.

`del_pseudo`

Removes a previously defined pseudo command/alias.

State queries

The following methods allow you to query state information regarding nicknames, channels, and peers.

`state_nicks`

Takes no arguments, returns a list of all nicknames in the state.

`state_chans`

Takes no arguments, returns a list of all channels in the state.

`state_peers`

Takes no arguments, returns a list of all irc servers in the state.

`state_nick_exists`

Takes one argument, a nickname, returns true or false dependent on whether the given nickname exists or not.

`state_chan_exists`

Takes one argument, a channel name, returns true or false dependent on whether the given channel exists or not.

`state_peer_exists`

Takes one argument, a peer server name, returns true or false dependent on whether the given peer exists or not.

`state_user_full`

Takes one argument, a nickname, returns that users full nick!user@host if they exist, undef if they don't.

If a second argument is provided and the nickname provided is an oper, then the returned value will be nick!user@host{opuser}

`state_user_nick`

Takes one argument, a nickname, returns the proper nickname for that user. Returns undef if the nick doesn't exist.

`state_user_umode`

Takes one argument, a nickname, returns that users mode setting.

`state_user_is_operator`

Takes one argument, a nickname, returns true or false dependent on whether the given nickname is an IRC operator or not.

`state_user_chans`

Takes one argument, a nickname, returns a list of channels that that nick is a member of.

`state_user_server`

Takes one argument, a nickname, returns the name of the peer server that that user is connected from.

`state_chan_list`

Takes one argument, a channel name, returns a list of the member nicks on that channel.

`state_chan_list_prefixed`

Takes one argument, a channel name, returns a list of the member nicks on that channel, nicknames will be prefixed with @%+ if they are +o +h or +v, respectively.

`state_chan_topic`

Takes one argument, a channel name, returns undef if no topic is set on that channel, or an arrayref consisting of the topic, who set it and the time they set it.

`state_chan_mode_set`

Takes two arguments, a channel name and a channel mode character. Returns true if that channel mode is set, false otherwise.

`state_is_chan_member`

Takes two arguments, a nick and a channel name. Returns true if that nick is on channel, false otherwise.

`state_user_chan_mode`

Takes two arguments, a nick and a channel name. Returns that nicks status (+ohv or '') on that channel.

`state_is_chan_op`

Takes two arguments, a nick and a channel name. Returns true if that nick is an channel operator, false otherwise.

`state_is_chan_hop`

Takes two arguments, a nick and a channel name. Returns true if that nick is an channel half-operator, false otherwise.

`state_has_chan_voice`

Takes two arguments, a nick and a channel name. Returns true if that nick has channel voice, false otherwise.

Server actions

`daemon_server_kill`

Takes two arguments, a nickname and a comment (which is optional); Issues a SERVER KILL of the given nick;

`daemon_server_mode`

First argument is a channel name, remaining arguments are channel modes and their parameters to apply.

`daemon_server_join`

Takes two arguments that are mandatory: a nickname of a user and a channel name. The user will join the channel.

`daemon_server_kick`

Takes two arguments that are mandatory and an optional one: channel name, nickname of the user to kick and a pithy comment.

`daemon_server_remove`

Takes two arguments that are mandatory and an optional one: channel name, nickname of the user to remove and a pithy comment.

`daemon_server_wallops`

Takes one argument, the message text to send.

`daemon_server_realops`

Sends server notices.

Takes one mandatory argument, the message text to send.

Second argument is the notice type, this can be Notice, locops or Globops. Defaults to Notice.

Third argument is a umode flag. The notice will be sent to OPERs who have this umode set. Default is none and the notice will be sent to all OPERs.

INPUT EVENTS

These are POE events that can be sent to the component.

`add_spoofed_nick`

Takes a single argument a hashref which should have the following keys:

'nick', the nickname to add, mandatory;
'user', the ident you want the nick to have, defaults to the same as the nick;
'hostname', the hostname, defaults to the server name;
'umode', specify whether this is to be an IRCop etc, defaults to 'i';
'ts', unixtime, default is time(), best not to meddle;

Note: spoofed nicks are currently only really functional for use as IRC services.

`del_spoofed_nick`

Takes a single mandatory argument, the spoofed nickname to remove. Optionally, you may specify a quit message for the spoofed nick.

Spoofed nick commands

The following input events are for the benefit of spoofed nicks. All require a nickname of a spoofed nick as the first argument.

`daemon_cmd_join`

Takes two arguments, a spoofed nick and a channel name to join.

`daemon_cmd_part`

Takes two arguments, a spoofed nick and a channel name to part from.

`daemon_cmd_mode`

Takes at least three arguments, a spoofed nick, a channel and a channel mode to apply. Additional arguments are parameters for the channel modes.

`daemon_cmd_kick`

Takes at least three arguments, a spoofed nick, a channel name and the nickname of a user to kick from that channel. You may supply a fourth argument which will be the kick comment.

`daemon_cmd_topic`

Takes three arguments, a spoofed nick, a channel name and the topic to set on that channel. If the third argument is an empty string then the channel topic will be unset.

`daemon_cmd_nick`

Takes two arguments, a spoofed nick and a new nickname to change to.

`daemon_cmd_kline`

Takes a number of arguments depending on where the KLINE is to be applied and for how long:

To set a permanent KLINE:

$ircd->yield(
    'daemon_cmd_kline',
    $spoofed_nick,
    $nick || $user_host_mask,
    $reason,
);

To set a temporary 10 minute KLINE:

$ircd->yield(
    'daemon_cmd_kline',
    $spoofed_nick,
    10,
    $nick || $user_host_mask,
    $reason,
);

To set a temporary 10 minute KLINE on all servers:

$ircd->yield(
    'daemon_cmd_kline',
    $spoofed_nick,
    10,
    $nick || $user_host_mask,
    'on',
    '*',
    $reason,
);

`daemon_cmd_unkline`

Removes a KLINE as indicated by the user@host mask supplied.

To remove a KLINE:

$ircd->yield(
    'daemon_cmd_unkline',
    $spoofed_nick,
    $user_host_mask,
);

To remove a KLINE from all servers:

$ircd->yield(
    'daemon_cmd_unkline',
    $spoofed_nick,
    $user_host_mask,
    'on',
    '*',
);

`daemon_cmd_rkline`

Used to set a regex based KLINE. The regex given must be based on a user@host mask.

To set a permanent RKLINE:

$ircd->yield(
    'daemon_cmd_rkline',
    $spoofed_nick,
    '^.*$@^(yahoo|google|microsoft)\.com$',
    $reason,
);

To set a temporary 10 minute RKLINE:

$ircd->yield(
    'daemon_cmd_rkline',
    $spoofed_nick,
    10,
    '^.*$@^(yahoo|google|microsoft)\.com$',
    $reason,
);

`daemon_cmd_unrkline`

Removes an RKLINE as indicated by the user@host mask supplied.

To remove a RKLINE:

$ircd->yield(
    'daemon_cmd_unrkline',
    $spoofed_nick,
    $user_host_mask,
);

`daemon_cmd_sjoin`

Takes two arguments a spoofed nickname and an existing channel name. This command will then manipulate the channel timestamp to clear all modes on that channel, including existing channel operators, reset the channel mode to '+nt', the spoofed nick will then join the channel and gain channel ops.

`daemon_cmd_privmsg`

Takes three arguments, a spoofed nickname, a target (which can be a nickname or a channel name) and whatever text you wish to send.

`daemon_cmd_notice`

Takes three arguments, a spoofed nickname, a target (which can be a nickname or a channel name) and whatever text you wish to send.

`daemon_cmd_locops`

Takes two arguments, a spoofed nickname and the text message to send to local operators.

`daemon_cmd_wallops`

Takes two arguments, a spoofed nickname and the text message to send to all operators.

`daemon_cmd_globops`

Takes two arguments, a spoofed nickname and the text message to send to all operators.

OUTPUT EVENTS

`ircd_daemon_error`

Emitted: when we fail to register with a peer;

Target: all plugins and registered sessions;

Args:

ARG0, the connection id;
ARG1, the server name;
ARG2, the reason;

`ircd_daemon_server`

Emitted: when a server is introduced onto the network;

Target: all plugins and registered sessions;

Args:

ARG0, the server name;
ARG1, the name of the server that is introducing them;
ARG2, the hop count;
ARG3, the server description;

`ircd_daemon_squit`

Emitted: when a server quits the network;

Target: all plugins and registered sessions;

Args:

ARG0, the server name;

`ircd_daemon_nick`

Emitted: when a user is introduced onto the network or changes their nickname

Target: all plugins and registered sessions;

Args (new user):

ARG0, the nickname;
ARG1, the hop count;
ARG2, the time stamp (TS);
ARG3, the user mode;
ARG4, the ident;
ARG5, the hostname;
ARG6, the server name;
ARG7, the real name;

Args (nick change):

ARG0, the full nick!user@host;
ARG1, the new nickname;

`ircd_daemon_umode`

Emitted: when a user changes their user mode;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host;
ARG1, the user mode change;

`ircd_daemon_quit`

Emitted: when a user quits or the server they are on squits;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host;
ARG1, the quit message;

`ircd_daemon_join`

Emitted: when a user joins a channel

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host;
ARG1, the channel name;

`ircd_daemon_part`

Emitted: when a user parts a channel;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host;
ARG1, the channel name;
ARG2, the part message;

`ircd_daemon_kick`

Emitted: when a user is kicked from a channel;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host of the kicker;
ARG1, the channel name;
ARG2, the nick of the kicked user;
ARG3, the kick message;

`ircd_daemon_mode`

Emitted: when a channel mode is changed;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host or server name;
ARG1, the channel name;
ARG2..$#_, the modes and their arguments;

`ircd_daemon_topic`

Emitted: when a channel topic is changed

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host of the changer;
ARG1, the channel name;
ARG2, the new topic;

`ircd_daemon_public`

Emitted: when a channel message is sent (a spoofed nick must be in the channel)

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host of the sender;
ARG1, the channel name;
ARG2, the message;

`ircd_daemon_privmsg`

Emitted: when someone sends a private message to a spoofed nick

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host of the sender;
ARG1, the spoofed nick targeted;
ARG2, the message;

`ircd_daemon_notice`

Emitted: when someone sends a notice to a spoofed nick or channel

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host of the sender;
ARG1, the spoofed nick targeted or channel spoofed nick is in;
ARG2, the message;

`ircd_daemon_snotice`

Emitted: when the server issues a notice for various reasons

Target: all plugins and registered sessions;

Args:

ARG0, the message;

`ircd_daemon_invite`

Emitted: when someone invites a spoofed nick to a channel;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host of the inviter;
ARG1, the spoofed nick being invited;
ARG2, the channel being invited to;

`ircd_daemon_rehash`

Emitted: when an oper issues a REHASH command;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host of the oper;

`ircd_daemon_die`

Emitted: when an oper issues a DIE command;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host of the oper;

Note: the component will shutdown, this is a feature;

`ircd_daemon_dline`

Emitted: when an oper issues a DLINE command;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host;
ARG1, the duration;
ARG2, the network mask;
ARG3, the reason;

`ircd_daemon_kline`

Emitted: when an oper issues a KLINE command;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host;
ARG1, the target for the KLINE;
ARG2, the duration in seconds;
ARG3, the user mask;
ARG4, the host mask;
ARG5, the reason;

`ircd_daemon_rkline`

Emitted: when an oper issues an RKLINE command;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host;
ARG1, the target for the RKLINE;
ARG2, the duration in seconds;
ARG3, the user mask;
ARG4, the host mask;
ARG5, the reason;

`ircd_daemon_unkline`

Emitted: when an oper issues an UNKLINE command;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host;
ARG1, the target for the UNKLINE;
ARG2, the user mask;
ARG3, the host mask;

`ircd_daemon_expired`

Emitted: when a temporary D-Line, X-Line, K-Line or RK-Line expires

Target: all plugins and registered sessions;

Args:

ARG0, What expired, can be d-line, x-line, k-line or rk-line;
ARG1, the mask (D-Line and X-Line) or user@host (K-Line and RK-Line);

`ircd_daemon_encap`

Emitted: when the server receives an ENCAP message;

Target: all plugins and registered sessions;

Args:

ARG0, the server name or full nick!user@host;
ARG1, peermask of targets for the ENCAP;
ARG2, the sub command being propagated;
Subsequent ARGs are dependent on the sub command;

`ircd_daemon_locops`

Emitted: when an oper issues a LOCOPS command;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host;
ARG1, the locops message;

`ircd_daemon_globops`

Emitted: when an oper or server issues a GLOBOPS;

Target: all plugins and registered sessions;

Args:

ARG0, the full nick!user@host or server name;
ARG1, the globops message;

`ircd_daemon_wallops`

Emitted: when a server issues a WALLOPS;

Target: all plugins and registered sessions;

Args:

ARG0, the server name;
ARG1, the wallops message;

BUGS

A few have turned up in the past and they are sure to again. Please use http://rt.cpan.org/ to report any. Alternatively, email the current maintainer.

DEVELOPMENT

You can find the latest source on github: http://github.com/bingos/poe-component-server-irc

The project's developers usually hang out in the #poe IRC channel on irc.perl.org. Do drop us a line.

MAINTAINER

Hinrik Örn Sigurðsson <hinrik.sig@gmail.com>

AUTHOR

Chris 'BinGOs' Williams

LICENSE

This module may be used, modified, and distributed under the same terms as Perl itself. Please see the license that came with your Perl distribution for details.

KUDOS

Rocco Caputo for creating POE.

Buu for pestering me when I started to procrastinate =]

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