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pbot/PBot/IRC/Connection.pm

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#####################################################################
# #
# Net::IRC -- Object-oriented Perl interface to an IRC server #
# #
# Connection.pm: The basic functions for a simple IRC connection #
# #
# #
# Copyright (c) 2001 Pete Sergeant, Greg Bacon & Dennis Taylor. #
# All rights reserved. #
# #
# This module is free software; you can redistribute or #
# modify it under the terms of Perl's Artistic License. #
# #
#####################################################################
package PBot::IRC::Connection; # pragma_ 2011/21/01
use PBot::IRC::Event; # pragma_ 2011/21/01
use PBot::IRC::DCC; # pragma_ 2011/21/01
use IO::Socket;
use IO::Socket::INET;
use Symbol;
use Carp;
# all this junk below just to conditionally load a module
# sometimes even perl is braindead...
eval 'use Time::HiRes qw(time)';
if (!$@) {
sub time ();
use subs 'time';
require Time::HiRes;
Time::HiRes->import('time');
}
use strict;
use vars (
'$AUTOLOAD',
);
# The names of the methods to be handled by &AUTOLOAD.
my %autoloaded = ( 'ircname' => undef,
'port' => undef,
'username' => undef,
'socket' => undef,
'verbose' => undef,
'parent' => undef,
'hostname' => undef,
'pacing' => undef,
'ssl' => undef,
'ssl_ca_path' => undef,
'ssl_ca_file' => undef,
);
# This hash will contain any global default handlers that the user specifies.
my %_udef = ();
# Creates a new IRC object and assigns some default attributes.
sub new {
my $proto = shift;
my $self = { # obvious defaults go here, rest are user-set
_debug => $_[0]->{_debug},
_port => 6667,
# Evals are for non-UNIX machines, just to make sure.
_username => eval { scalar getpwuid($>) } || $ENV{USER} || $ENV{LOGNAME} || "japh",
_ircname => $ENV{IRCNAME} || eval { (getpwuid($>))[6] } || "Just Another Perl Hacker",
_nick => $ENV{IRCNICK} || eval { scalar getpwuid($>) } || $ENV{USER} || $ENV{LOGNAME} || "WankerBot",
_ignore => {},
_handler => {},
_verbose => 0, # Is this an OK default?
_parent => shift,
_frag => '',
_connected => 0,
_maxlinelen => 510, # The RFC says we shouldn't exceed this.
_lastsl => 0,
_pacing => 0, # no pacing by default
_ssl => 0, # no ssl by default
_ssl_ca_path => undef,
_ssl_ca_file => undef,
_format => { 'default' => "[%f:%t] %m <%d>", },
};
bless $self, $proto;
# do any necessary initialization here
$self->connect(@_) if @_;
return $self;
}
# Takes care of the methods in %autoloaded
# Sets specified attribute, or returns its value if called without args.
sub AUTOLOAD {
my $self = @_; ## can't modify @_ for goto &name
my $class = ref $self; ## die here if !ref($self) ?
my $meth;
# -- #perl was here! --
# <Teratogen> absolute power corrupts absolutely, but it's a helluva lot
# of fun.
# <Teratogen> =)
($meth = $AUTOLOAD) =~ s/^.*:://; ## strip fully qualified portion
unless (exists $autoloaded{$meth}) {
croak "No method called \"$meth\" for $class object.";
}
eval <<EOSub;
sub $meth {
my \$self = shift;
if (\@_) {
my \$old = \$self->{"_$meth"};
\$self->{"_$meth"} = shift;
return \$old;
}
else {
return \$self->{"_$meth"};
}
}
EOSub
# no reason to play this game every time
goto &$meth;
}
# This sub is the common backend to add_handler and add_global_handler
#
sub _add_generic_handler {
my ($self, $event, $ref, $rp, $hash_ref, $real_name) = @_;
my $ev;
my %define = ( "replace" => 0, "before" => 1, "after" => 2 );
unless (@_ >= 3) {
croak "Not enough arguments to $real_name()";
}
unless (ref($ref) eq 'CODE') {
croak "Second argument of $real_name isn't a coderef";
}
# Translate REPLACE, BEFORE and AFTER.
if (not defined $rp) {
$rp = 0;
} elsif ($rp =~ /^\D/) {
$rp = $define{lc $rp} || 0;
}
foreach $ev (ref $event eq "ARRAY" ? @{$event} : $event) {
# Translate numerics to names
if ($ev =~ /^\d/) {
$ev = PBot::IRC::Event->trans($ev); # pragma_ 2011/21/01
unless ($ev) {
carp "Unknown event type in $real_name: $ev";
return;
}
}
$hash_ref->{lc $ev} = [ $ref, $rp ];
}
return 1;
}
# This sub will assign a user's custom function to a particular event which
# might be received by any Connection object.
# Takes 3 args: the event to modify, as either a string or numeric code
# If passed an arrayref, the array is assumed to contain
# all event names which you want to set this handler for.
# a reference to the code to be executed for the event
# (optional) A value indicating whether the user's code should replace
# the built-in handler, or be called with it. Possible values:
# 0 - Replace the built-in handlers entirely. (the default)
# 1 - Call this handler right before the default handler.
# 2 - Call this handler right after the default handler.
# These can also be referred to by the #define-like strings in %define.
sub add_global_handler {
my ($self, $event, $ref, $rp) = @_;
return $self->_add_generic_handler($event, $ref, $rp, \%_udef, 'add_global_handler');
}
# This sub will assign a user's custom function to a particular event which
# this connection might receive. Same args as above.
sub add_handler {
my ($self, $event, $ref, $rp) = @_;
return $self->_add_generic_handler($event, $ref, $rp, $self->{_handler}, 'add_handler');
}
# Hooks every event we know about...
sub add_default_handler {
my ($self, $ref, $rp) = @_;
foreach my $eventtype (keys(%PBot::IRC::Event::_names)) { # pragma_ 2011/21/01
$self->_add_generic_handler($eventtype, $ref, $rp, $self->{_handler}, 'add_default_handler');
}
return 1;
}
# Why do I even bother writing subs this simple? Sends an ADMIN command.
# Takes 1 optional arg: the name of the server you want to query.
sub admin {
my $self = shift; # Thank goodness for AutoLoader, huh?
# Perhaps we'll finally use it soon.
$self->sl("ADMIN" . ($_[0] ? " $_[0]" : ""));
}
# Toggles away-ness with the server. Optionally takes an away message.
sub away {
my $self = shift;
$self->sl("AWAY" . ($_[0] ? " :$_[0]" : ""));
}
# Attempts to connect to the specified IRC (server, port) with the specified
# (nick, username, ircname). Will close current connection if already open.
sub connect {
my $self = shift;
my ($password, $sock);
if (@_) {
my (%arg) = @_;
$self->hostname($arg{'LocalAddr'}) if exists $arg{'LocalAddr'};
$password = $arg{'Password'} if exists $arg{'Password'};
$self->nick($arg{'Nick'}) if exists $arg{'Nick'};
$self->port($arg{'Port'}) if exists $arg{'Port'};
$self->server($arg{'Server'}) if exists $arg{'Server'};
$self->ircname($arg{'Ircname'}) if exists $arg{'Ircname'};
$self->username($arg{'Username'}) if exists $arg{'Username'};
$self->pacing($arg{'Pacing'}) if exists $arg{'Pacing'};
$self->ssl($arg{'SSL'}) if exists $arg{'SSL'};
$self->ssl_ca_path($arg{'SSL_ca_path'}) if exists $arg{'SSL_ca_path'};
$self->ssl_ca_file($arg{'SSL_ca_file'}) if exists $arg{'SSL_ca_file'};
}
# Lots of error-checking claptrap first...
unless ($self->server) {
unless ($ENV{IRCSERVER}) {
croak "No server address specified in connect()";
}
$self->server( $ENV{IRCSERVER} );
}
unless ($self->nick) {
$self->nick($ENV{IRCNICK} || eval { scalar getpwuid($>) }
|| $ENV{USER} || $ENV{LOGNAME} || "WankerBot");
}
unless ($self->port) {
$self->port($ENV{IRCPORT} || 6667);
}
unless ($self->ircname) {
$self->ircname($ENV{IRCNAME} || eval { (getpwuid($>))[6] }
|| "Just Another Perl Hacker");
}
unless ($self->username) {
$self->username(eval { scalar getpwuid($>) } || $ENV{USER}
|| $ENV{LOGNAME} || "japh");
}
# Now for the socket stuff...
if ($self->connected) {
$self->quit("Changing servers");
}
if ($self->ssl) {
require IO::Socket::SSL;
if ($self->ssl_ca_file) {
$self->socket(IO::Socket::SSL->new(PeerAddr => $self->server,
PeerPort => $self->port,
Proto => "tcp",
LocalAddr => $self->hostname,
SSL_verify_mode => IO::Socket::SSL->SSL_VERIFY_PEER,
SSL_ca_file => $self->ssl_ca_file,
));
} elsif ($self->ssl_ca_path) {
$self->socket(IO::Socket::SSL->new(PeerAddr => $self->server,
PeerPort => $self->port,
Proto => "tcp",
LocalAddr => $self->hostname,
SSL_verify_mode => IO::Socket::SSL->SSL_VERIFY_PEER,
SSL_ca_path => $self->ssl_ca_path,
));
} else {
$self->socket(IO::Socket::SSL->new(PeerAddr => $self->server,
PeerPort => $self->port,
Proto => "tcp",
LocalAddr => $self->hostname,
));
}
} else {
$self->socket(IO::Socket::INET->new(PeerAddr => $self->server,
PeerPort => $self->port,
Proto => "tcp",
LocalAddr => $self->hostname,
));
}
if (!$self->socket) {
carp (sprintf "Can't connect to %s:%s!",
$self->server, $self->port);
$self->error(1);
return;
}
# Send a PASS command if they specified a password. According to
# the RFC, we should do this as soon as we connect.
if (defined $password) {
$self->sl("PASS $password");
}
# Now, log in to the server...
unless ($self->sl('NICK ' . $self->nick()) and
$self->sl(sprintf("USER %s %s %s :%s",
$self->username(),
"foo.bar.com",
$self->server(),
$self->ircname()))) {
carp "Couldn't send introduction to server: $!";
$self->error(1);
$! = "Couldn't send NICK/USER introduction to " . $self->server;
return;
}
$self->{_connected} = 1;
$self->parent->addconn($self);
}
# Returns a boolean value based on the state of the object's socket.
sub connected {
my $self = shift;
return ( $self->{_connected} and $self->socket() );
}
# Sends a CTCP request to some hapless victim(s).
# Takes at least two args: the type of CTCP request (case insensitive)
# the nick or channel of the intended recipient(s)
# Any further args are arguments to CLIENTINFO, ERRMSG, or ACTION.
sub ctcp {
my ($self, $type, $target) = splice @_, 0, 3;
$type = uc $type;
unless ($target) {
croak "Not enough arguments to ctcp()";
}
if ($type eq "PING") {
unless ($self->sl("PRIVMSG $target :\001PING " . int(time) . "\001")) {
carp "Socket error sending $type request in ctcp()";
return;
}
} elsif (($type eq "CLIENTINFO" or $type eq "ACTION") and @_) {
unless ($self->sl("PRIVMSG $target :\001$type " .
CORE::join(" ", @_) . "\001")) {
carp "Socket error sending $type request in ctcp()";
return;
}
} elsif ($type eq "ERRMSG") {
unless (@_) {
carp "Not enough arguments to $type in ctcp()";
return;
}
unless ($self->sl("PRIVMSG $target :\001ERRMSG " .
CORE::join(" ", @_) . "\001")) {
carp "Socket error sending $type request in ctcp()";
return;
}
} else {
unless ($self->sl("PRIVMSG $target :\001$type " .
CORE::join(" ",@_) . "\001")) {
carp "Socket error sending $type request in ctcp()";
return;
}
}
}
# Sends replies to CTCP queries. Simple enough, right?
# Takes 2 args: the target person or channel to send a reply to
# the text of the reply
sub ctcp_reply {
my $self = shift;
$self->notice($_[0], "\001" . $_[1] . "\001");
}
# Sets or returns the debugging flag for this object.
# Takes 1 optional arg: a new boolean value for the flag.
sub debug {
my $self = shift;
if (@_) {
$self->{_debug} = $_[0];
}
return $self->{_debug};
}
# Dequotes CTCP messages according to ctcp.spec. Nothing special.
# Then it breaks them into their component parts in a flexible, ircII-
# compatible manner. This is not quite as trivial. Oh, well.
# Takes 1 arg: the line to be dequoted.
sub dequote {
my $line = shift;
my ($order, @chunks) = (0, ()); # CHUNG! CHUNG! CHUNG!
# Filter misplaced \001s before processing... (Thanks, Tom!)
substr($line, rindex($line, "\001"), 1) = '\\a'
unless ($line =~ tr/\001//) % 2 == 0;
# Thanks to Abigail (abigail@fnx.com) for this clever bit.
if (index($line, "\cP") >= 0) { # dequote low-level \n, \r, ^P, and \0.
my (%h) = (n => "\012", r => "\015", 0 => "\0", "\cP" => "\cP");
$line =~ s/\cP([nr0\cP])/$h{$1}/g;
}
$line =~ s/\\([^\\a])/$1/g; # dequote unnecessarily quoted characters.
# If true, it's in odd order... ctcp commands start with first chunk.
$order = 1 if index($line, "\001") == 0;
@chunks = map { s/\\\\/\\/g; $_ } (split /\cA/, $line);
return ($order, @chunks);
}
# Standard destructor method for the GC routines. (HAHAHAH! DIE! DIE! DIE!)
sub DESTROY {
my $self = shift;
$self->handler("destroy", "nobody will ever use this");
$self->quit();
# anything else?
}
# Disconnects this Connection object cleanly from the server.
# Takes at least 1 arg: the format and args parameters to Event->new().
sub disconnect {
my $self = shift;
$self->{_connected} = 0;
$self->parent->removeconn($self);
$self->socket( undef );
$self->handler(PBot::IRC::Event->new( "disconnect", # pragma_ 2011/21/01
$self->server,
'',
@_ ));
}
# Tells IRC.pm if there was an error opening this connection. It's just
# for sane error passing.
# Takes 1 optional arg: the new value for $self->{'iserror'}
sub error {
my $self = shift;
$self->{'iserror'} = $_[0] if @_;
return $self->{'iserror'};
}
# Lets the user set or retrieve a format for a message of any sort.
# Takes at least 1 arg: the event whose format you're inquiring about
# (optional) the new format to use for this event
sub format {
my ($self, $ev) = splice @_, 0, 2;
unless ($ev) {
croak "Not enough arguments to format()";
}
if (@_) {
$self->{'_format'}->{$ev} = $_[0];
} else {
return ($self->{'_format'}->{$ev} ||
$self->{'_format'}->{'default'});
}
}
# Calls the appropriate handler function for a specified event.
# Takes 2 args: the name of the event to handle
# the arguments to the handler function
sub handler {
my ($self, $event) = splice @_, 0, 2;
unless (defined $event) {
croak 'Too few arguments to Connection->handler()';
}
# Get name of event.
my $ev;
if (ref $event) {
$ev = $event->type;
} elsif (defined $event) {
$ev = $event;
$event = PBot::IRC::Event->new($event, '', '', ''); # pragma_ 2011/21/01
} else {
croak "Not enough arguments to handler()";
}
print STDERR "Trying to handle event '$ev'.\n" if $self->{_debug};
if ($self->{_debug}) {
use Data::Dumper;
print STDERR "ev: ", Dumper($ev), "\nevent: ", Dumper($event), "\n";
}
my $handler = undef;
if (exists $self->{_handler}->{$ev}) {
$handler = $self->{_handler}->{$ev};
} elsif (exists $_udef{$ev}) {
$handler = $_udef{$ev};
} else {
return $self->_default($event, @_);
}
my ($code, $rp) = @{$handler};
# If we have args left, try to call the handler.
if ($rp == 0) { # REPLACE
&$code($self, $event, @_);
} elsif ($rp == 1) { # BEFORE
&$code($self, $event, @_);
$self->_default($event, @_);
} elsif ($rp == 2) { # AFTER
$self->_default($event, @_);
&$code($self, $event, @_);
} else {
confess "Bad parameter passed to handler(): rp=$rp";
}
print STDERR "Handler for '$ev' called.\n" if $self->{_debug};
return 1;
}
# Lets a user set hostmasks to discard certain messages from, or (if called
# with only 1 arg), show a list of currently ignored hostmasks of that type.
# Takes 2 args: type of ignore (public, msg, ctcp, etc)
# (optional) [mask(s) to be added to list of specified type]
sub ignore {
my $self = shift;
unless (@_) {
croak "Not enough arguments to ignore()";
}
if (@_ == 1) {
if (exists $self->{_ignore}->{$_[0]}) {
return @{ $self->{_ignore}->{$_[0]} };
} else {
return ();
}
} elsif (@_ > 1) { # code defensively, remember...
my $type = shift;
# I moved this part further down as an Obsessive Efficiency
# Initiative. It shouldn't be a problem if I do _parse right...
# ... but those are famous last words, eh?
unless (grep {$_ eq $type}
qw(public msg ctcp notice channel nick other all)) {
carp "$type isn't a valid type to ignore()";
return;
}
if ( exists $self->{_ignore}->{$type} ) {
push @{$self->{_ignore}->{$type}}, @_;
} else {
$self->{_ignore}->{$type} = [ @_ ];
}
}
}
# Yet Another Ridiculously Simple Sub. Sends an INFO command.
# Takes 1 optional arg: the name of the server to query.
sub info {
my $self = shift;
$self->sl("INFO" . ($_[0] ? " $_[0]" : ""));
}
# Invites someone to an invite-only channel. Whoop.
# Takes 2 args: the nick of the person to invite
# the channel to invite them to.
# I hate the syntax of this command... always seemed like a protocol flaw.
sub invite {
my $self = shift;
unless (@_ > 1) {
croak "Not enough arguments to invite()";
}
$self->sl("INVITE $_[0] $_[1]");
}
# Checks if a particular nickname is in use.
# Takes at least 1 arg: nickname(s) to look up.
sub ison {
my $self = shift;
unless (@_) {
croak 'Not enough args to ison().';
}
$self->sl("ISON " . CORE::join(" ", @_));
}
# Joins a channel on the current server if connected, eh?.
# Corresponds to /JOIN command.
# Takes 2 args: name of channel to join
# optional channel password, for +k channels
sub join {
my $self = shift;
unless ( $self->connected ) {
carp "Can't join() -- not connected to a server";
return;
}
unless (@_) {
croak "Not enough arguments to join()";
}
return $self->sl("JOIN $_[0]" . ($_[1] ? " $_[1]" : ""));
}
# Takes at least 2 args: the channel to kick the bastard from
# the nick of the bastard in question
# (optional) a parting comment to the departing bastard
sub kick {
my $self = shift;
unless (@_ > 1) {
croak "Not enough arguments to kick()";
}
return $self->sl("KICK $_[0] $_[1]" . ($_[2] ? " :$_[2]" : ""));
}
# Gets a list of all the servers that are linked to another visible server.
# Takes 2 optional args: it's a bitch to describe, and I'm too tired right
# now, so read the RFC.
sub links {
my ($self) = (shift, undef);
$self->sl("LINKS" . (scalar(@_) ? " " . CORE::join(" ", @_[0,1]) : ""));
}
# Requests a list of channels on the server, or a quick snapshot of the current
# channel (the server returns channel name, # of users, and topic for each).
sub list {
my $self = shift;
$self->sl("LIST " . CORE::join(",", @_));
}
# Sends a request for some server/user stats.
# Takes 1 optional arg: the name of a server to request the info from.
sub lusers {
my $self = shift;
$self->sl("LUSERS" . ($_[0] ? " $_[0]" : ""));
}
# Gets and/or sets the max line length. The value previous to the sub
# call will be returned.
# Takes 1 (optional) arg: the maximum line length (in bytes)
sub maxlinelen {
my $self = shift;
my $ret = $self->{_maxlinelen};
$self->{_maxlinelen} = shift if @_;
return $ret;
}
# Sends an action to the channel/nick you specify. It's truly amazing how
# many IRCers have no idea that /me's are actually sent via CTCP.
# Takes 2 args: the channel or nick to bother with your witticism
# the action to send (e.g., "weed-whacks billn's hand off.")
sub me {
my $self = shift;
$self->ctcp("ACTION", $_[0], $_[1]);
}
# Change channel and user modes (this one is easy... the handler is a bitch.)
# Takes at least 1 arg: the target of the command (channel or nick)
# (optional) the mode string (i.e., "-boo+i")
# (optional) operands of the mode string (nicks, hostmasks, etc.)
sub mode {
my $self = shift;
unless (@_ >= 1) {
croak "Not enough arguments to mode()";
}
$self->sl("MODE $_[0] " . CORE::join(" ", @_[1..$#_]));
}
# Sends a MOTD command to a server.
# Takes 1 optional arg: the server to query (defaults to current server)
sub motd {
my $self = shift;
$self->sl("MOTD" . ($_[0] ? " $_[0]" : ""));
}
# Requests the list of users for a particular channel (or the entire net, if
# you're a masochist).
# Takes 1 or more optional args: name(s) of channel(s) to list the users from.
sub names {
my $self = shift;
$self->sl("NAMES " . CORE::join(",", @_));
} # Was this the easiest sub in the world, or what?
# Creates and returns a DCC CHAT object, analogous to IRC.pm's newconn().
# Takes at least 1 arg: An Event object for the DCC CHAT request.
# OR A list or listref of args to be passed to new(),
# consisting of:
# - A boolean value indicating whether or not
# you're initiating the CHAT connection.
# - The nick of the chattee
# - The address to connect to
# - The port to connect on
sub new_chat {
my $self = shift;
my ($init, $nick, $address, $port);
if (ref($_[0]) =~ /Event/) {
# If it's from an Event object, we can't be initiating, right?
($init, undef, undef, undef, $address, $port) = (0, $_[0]->args);
$nick = $_[0]->nick;
} elsif (ref($_[0]) eq "ARRAY") {
($init, $nick, $address, $port) = @{$_[0]};
} else {
($init, $nick, $address, $port) = @_;
}
PBot::IRC::DCC::CHAT->new($self, $init, $nick, $address, $port); # pragma_ 2011/21/01
}
# Creates and returns a DCC GET object, analogous to IRC.pm's newconn().
# Takes at least 1 arg: An Event object for the DCC SEND request.
# OR A list or listref of args to be passed to new(),
# consisting of:
# - The nick of the file's sender
# - The name of the file to receive
# - The address to connect to
# - The port to connect on
# - The size of the incoming file
# For all of the above, an extra argument should be added at the end:
# An open filehandle to save the incoming file into,
# in globref, FileHandle, or IO::* form.
# If you wish to do a DCC RESUME, specify the offset in bytes that you
# want to start downloading from as the last argument.
sub new_get {
my $self = shift;
my ($nick, $name, $address, $port, $size, $offset, $handle);
if (ref($_[0]) =~ /Event/) {
(undef, undef, $name, $address, $port, $size) = $_[0]->args;
$nick = $_[0]->nick;
$handle = $_[1] if defined $_[1];
} elsif (ref($_[0]) eq "ARRAY") {
($nick, $name, $address, $port, $size) = @{$_[0]};
$handle = $_[1] if defined $_[1];
} else {
($nick, $name, $address, $port, $size, $handle) = @_;
}
unless (defined $handle and ref $handle and
(ref $handle eq "GLOB" or $handle->can('print')))
{
carp ("Filehandle argument to Connection->new_get() must be ".
"a glob reference or object");
return; # is this behavior OK?
}
my $dcc = PBot::IRC::DCC::GET->new( $self, $nick, $address, $port, $size, # pragma_ 2011/21/01
$name, $handle, $offset );
$self->parent->addconn($dcc) if $dcc;
return $dcc;
}
# Creates and returns a DCC SEND object, analogous to IRC.pm's newconn().
# Takes at least 2 args: The nickname of the person to send to
# The name of the file to send
# (optional) The blocksize for the connection (default 1k)
sub new_send {
my $self = shift;
my ($nick, $filename, $blocksize);
if (ref($_[0]) eq "ARRAY") {
($nick, $filename, $blocksize) = @{$_[0]};
} else {
($nick, $filename, $blocksize) = @_;
}
PBot::IRC::DCC::SEND->new($self, $nick, $filename, $blocksize); # pragma_ 2011/21/01
}
# Selects nick for this object or returns currently set nick.
# No default; must be set by user.
# If changed while the object is already connected to a server, it will
# automatically try to change nicks.
# Takes 1 arg: the nick. (I bet you could have figured that out...)
sub nick {
my $self = shift;
if (@_) {
$self->{'_nick'} = shift;
if ($self->connected) {
return $self->sl("NICK " . $self->{'_nick'});
}
} else {
return $self->{'_nick'};
}
}
# Sends a notice to a channel or person.
# Takes 2 args: the target of the message (channel or nick)
# the text of the message to send
# The message will be chunked if it is longer than the _maxlinelen
# attribute, but it doesn't try to protect against flooding. If you
# give it too much info, the IRC server will kick you off!
sub notice {
my ($self, $to) = splice @_, 0, 2;
unless (@_) {
croak "Not enough arguments to notice()";
}
my ($buf, $length, $line) = (CORE::join("", @_), $self->{_maxlinelen});
while (length($buf) > 0) {
($line, $buf) = unpack("a$length a*", $buf);
$self->sl("NOTICE $to :$line");
}
}
# Makes you an IRCop, if you supply the right username and password.
# Takes 2 args: Operator's username
# Operator's password
sub oper {
my $self = shift;
unless (@_ > 1) {
croak "Not enough arguments to oper()";
}
$self->sl("OPER $_[0] $_[1]");
}
# This function splits apart a raw server line into its component parts
# (message, target, message type, CTCP data, etc...) and passes it to the
# appropriate handler. Takes no args, really.
sub parse {
my ($self) = shift;
my ($from, $type, $message, @stuff, $itype, $ev, @lines, $line);
if (defined ($self->ssl ?
$self->socket->read($line, 10240) :
$self->socket->recv($line, 10240, 0))
and
(length($self->{_frag}) + length($line)) > 0) {
# grab any remnant from the last go and split into lines
my $chunk = $self->{_frag} . $line;
@lines = split /\012/, $chunk;
# if the last line was incomplete, pop it off the chunk and
# stick it back into the frag holder.
$self->{_frag} = (substr($chunk, -1) ne "\012" ? pop @lines : '');
} else {
# um, if we can read, i say we should read more than 0
# besides, recv isn't returning undef on closed
# sockets. getting rid of this connection...
$self->disconnect('error', 'Connection reset by peer');
return;
}
PARSELOOP: foreach $line (@lines) {
# Clean the lint filter every 2 weeks...
$line =~ s/[\012\015]+$//;
next unless $line;
print STDERR "<<< $line\n" if $self->{_debug};
# Like the RFC says: "respond as quickly as possible..."
if ($line =~ /^PING/) {
$ev = (PBot::IRC::Event->new( "ping", # pragma_ 2011/21/01
$self->server,
$self->nick,
"serverping", # FIXME?
substr($line, 5)
));
# Had to move this up front to avoid a particularly pernicious bug.
} elsif ($line =~ /^NOTICE/) {
$ev = PBot::IRC::Event->new( "snotice", # pragma_ 2011/21/01
$self->server,
'',
'server',
(split /:/, $line, 2)[1] );
# Spurious backslashes are for the benefit of cperl-mode.
# Assumption: all non-numeric message types begin with a letter
} elsif ($line =~ /^:?
(?:[][}{\w\\\`^|\-]+? # The nick (valid nickname chars)
! # The nick-username separator
.+? # The username
\@)? # Umm, duh...
\S+ # The hostname
\s+ # Space between mask and message type
[A-Za-z] # First char of message type
[^\s:]+? # The rest of the message type
/x) # That ought to do it for now...
{
$line = substr $line, 1 if $line =~ /^:/;
# Patch submitted for v.0.72
# Fixes problems with IPv6 hostnames.
# ($from, $line) = split ":", $line, 2;
($from, $line) = $line =~ /^(?:|)(\S+\s+[^:]+):?(.*)/;
print STDERR "from: [$from], line: [$line]\n" if $self->{_debug};
($from, $type, @stuff) = split /\s+/, $from;
$type = lc $type;
# fix splitting of IPv6 hostnames in modes -- pragma- 2013/07/30
if ($type eq "mode" and $#stuff > -1 and length $line) {
my @other_stuff = split /\s+/, $line;
$stuff[$#stuff] .= ':' . shift @other_stuff;
push @stuff, @other_stuff;
$line = "";
}
# This should be fairly intuitive... (cperl-mode sucks, though)
if (defined $line and index($line, "\001") >= 0) {
$itype = "ctcp";
unless ($type eq "notice") {
$type = (($stuff[0] =~ tr/\#\&//) ? "public" : "msg");
}
} elsif ($type eq "privmsg") {
$itype = $type = (($stuff[0] =~ tr/\#\&//) ? "public" : "msg");
} elsif ($type eq "notice") {
$itype = "notice";
} elsif ($type eq "join" or $type eq "part" or
$type eq "mode" or $type eq "topic" or
$type eq "kick") {
$itype = "channel";
} elsif ($type eq "nick") {
$itype = "nick";
} else {
$itype = "other";
}
# This goes through the list of ignored addresses for this message
# type and drops out of the sub if it's from an ignored hostmask.
study $from;
foreach ( $self->ignore($itype), $self->ignore("all") ) {
$_ = quotemeta; s/\\\*/.*/g;
next PARSELOOP if $from =~ /$_/i;
}
# It used to look a lot worse. Here was the original version...
# the optimization above was proposed by Silmaril, for which I am
# eternally grateful. (Mine still looks cooler, though. :)
# return if grep { $_ = join('.*', split(/\\\*/,
# quotemeta($_))); /$from/ }
# ($self->ignore($type), $self->ignore("all"));
# Add $line to @stuff for the handlers
push @stuff, $line if defined $line;
# Now ship it off to the appropriate handler and forget about it.
if ( $itype eq "ctcp" ) { # it's got CTCP in it!
$self->parse_ctcp($type, $from, $stuff[0], $line);
next;
} elsif ($type eq "public" or $type eq "msg" or
$type eq "notice" or $type eq "mode" or
$type eq "join" or $type eq "part" or
$type eq "topic" or $type eq "invite" or
$type eq "whoisaccount" or $type eq "cap") {
$ev = PBot::IRC::Event->new( $type, # pragma_ 2011/21/01
$from,
shift(@stuff),
$type,
@stuff,
);
} elsif ($type eq "quit" or $type eq "nick" or $type eq "account") {
$ev = PBot::IRC::Event->new( $type, # pragma_ 2011/21/01
$from,
$from,
$type,
@stuff,
);
} elsif ($type eq "kick") {
$ev = PBot::IRC::Event->new( $type, # pragma_ 2011/21/01
$from,
$stuff[1],
$type,
@stuff[0,2..$#stuff],
);
} elsif ($type eq "kill") {
$ev = PBot::IRC::Event->new($type, # pragma_ 2011/21/01
$from,
'',
$type,
$line); # Ahh, what the hell.
} elsif ($type eq "wallops") {
$ev = PBot::IRC::Event->new($type, # pragma_ 2011/21/01
$from,
'',
$type,
$line);
} elsif ($type eq "pong") {
$ev = PBot::IRC::Event->new($type, # pragma_ 2011/21/01
$from,
'',
$type,
$line);
} else {
carp "Unknown event type: $type";
}
}
elsif ($line =~ /^:? # Here's Ye Olde Numeric Handler!
\S+? # the servername (can't assume RFC hostname)
\s+? # Some spaces here...
\d+? # The actual number
\b/x # Some other crap, whatever...
) {
$ev = $self->parse_num($line);
} elsif ($line =~ /^:(\w+) MODE \1 /) {
$ev = PBot::IRC::Event->new( 'umode', # pragma_ 2011/21/01
$self->server,
$self->nick,
'server',
substr($line, index($line, ':', 1) + 1));
} elsif ($line =~ /^:? # Here's Ye Olde Server Notice handler!
.+? # the servername (can't assume RFC hostname)
\s+? # Some spaces here...
NOTICE # The server notice
\b/x # Some other crap, whatever...
) {
$ev = PBot::IRC::Event->new( 'snotice', # pragma_ 2011/21/01
$self->server,
'',
'server',
(split /\s+/, $line, 3)[2] );
} elsif ($line =~ /^ERROR/) {
if ($line =~ /^ERROR :Closing [Ll]ink/) { # is this compatible?
$ev = 'done';
$self->disconnect( 'error', ($line =~ /(.*)/) );
} else {
$ev = PBot::IRC::Event->new( "error", # pragma_ 2011/21/01
$self->server,
'',
'error',
(split /:/, $line, 2)[1]);
}
} elsif ($line =~ /^Closing [Ll]ink/) {
$ev = 'done';
$self->disconnect( 'error', ($line =~ /(.*)/) );
}
if ($ev) {
# We need to be able to fall through if the handler has
# already been called (i.e., from within disconnect()).
$self->handler($ev) unless $ev eq 'done';
} else {
# If it gets down to here, it's some exception I forgot about.
carp "Funky parse case: $line\n";
}
}
}
# The backend that parse() sends CTCP requests off to. Pay no attention
# to the camel behind the curtain.
# Takes 4 arguments: the type of message
# who it's from
# the first bit of stuff
# the line from the server.
sub parse_ctcp {
my ($self, $type, $from, $stuff, $line) = @_;
my ($one, $two);
my ($odd, @foo) = (&dequote($line));
while (($one, $two) = (splice @foo, 0, 2)) {
($one, $two) = ($two, $one) if $odd;
my ($ctype) = $one =~ /^(\w+)\b/;
my $prefix = undef;
if ($type eq 'notice') {
$prefix = 'cr';
} elsif ($type eq 'public' or
$type eq 'msg' ) {
$prefix = 'c';
} else {
carp "Unknown CTCP type: $type";
return;
}
if ($prefix) {
my $handler = $prefix . lc $ctype; # unit. value prob with $ctype
$one =~ s/^$ctype //i; # strip the CTCP type off the args
$self->handler(PBot::IRC::Event->new( $handler, $from, $stuff, # pragma_ 2011/21/01
$handler, $one ));
}
$self->handler(PBot::IRC::Event->new($type, $from, $stuff, $type, $two)) # pragma_ 2011/21/01
if $two;
}
return 1;
}
# Does special-case parsing for numeric events. Separate from the rest of
# parse() for clarity reasons (I can hear Tkil gasping in shock now. :-).
# Takes 1 arg: the raw server line
sub parse_num {
my ($self, $line) = @_;
# Figlet protection? This seems to be a bit closer to the RFC than
# the original version, which doesn't seem to handle :trailers quite
# correctly.
my ($from, $type, $stuff) = split(/\s+/, $line, 3);
my ($blip, $space, $other, @stuff);
while ($stuff) {
($blip, $space, $other) = split(/(\s+)/, $stuff, 2);
$space = "" unless $space;
$other = "" unless $other; # Thanks to jack velte...
if ($blip =~ /^:/) {
push @stuff, $blip . $space . $other;
last;
} else {
push @stuff, $blip;
$stuff = $other;
}
}
$from = substr $from, 1 if $from =~ /^:/;
return PBot::IRC::Event->new( $type, # pragma_ 2011/21/01
$from,
'',
'server',
@stuff );
}
# Helps you flee those hard-to-stand channels.
# Takes at least one arg: name(s) of channel(s) to leave.
sub part {
my $self = shift;
unless (@_) {
croak "No arguments provided to part()";
}
$self->sl("PART " . CORE::join(",", @_)); # "A must!"
}
# Tells what's on the other end of a connection. Returns a 2-element list
# consisting of the name on the other end and the type of connection.
# Takes no args.
sub peer {
my $self = shift;
return ($self->server(), "IRC connection");
}
# Prints a message to the defined error filehandle(s).
# No further description should be necessary.
sub printerr {
shift;
print STDERR @_, "\n";
}
# Prints a message to the defined output filehandle(s).
sub print {
shift;
print STDOUT @_, "\n";
}
# Sends a message to a channel or person.
# Takes 2 args: the target of the message (channel or nick)
# the text of the message to send
# Don't use this for sending CTCPs... that's what the ctcp() function is for.
# The message will be chunked if it is longer than the _maxlinelen
# attribute, but it doesn't try to protect against flooding. If you
# give it too much info, the IRC server will kick you off!
sub privmsg {
my ($self, $to) = splice @_, 0, 2;
unless (@_) {
croak 'Not enough arguments to privmsg()';
}
my $buf = CORE::join '', @_;
my $length = $self->{_maxlinelen} - 11 - length($to);
my $line;
if (ref($to) =~ /^(GLOB|IO::Socket)/) {
while (length($buf) > 0) {
($line, $buf) = unpack("a$length a*", $buf);
send($to, $line . "\012", 0);
}
} else {
while (length($buf) > 0) {
($line, $buf) = unpack("a$length a*", $buf);
if (ref $to eq 'ARRAY') {
$self->sl("PRIVMSG ", CORE::join(',', @$to), " :$line");
} else {
$self->sl("PRIVMSG $to :$line");
}
}
}
}
# Closes connection to IRC server. (Corresponding function for /QUIT)
# Takes 1 optional arg: parting message, defaults to "Leaving" by custom.
sub quit {
my $self = shift;
# Do any user-defined stuff before leaving
$self->handler("leaving");
unless ( $self->connected ) { return (1) }
# Why bother checking for sl() errors now, after all? :)
# We just send the QUIT command and leave. The server will respond with
# a "Closing link" message, and parse() will catch it, close the
# connection, and throw a "disconnect" event. Neat, huh? :-)
$self->sl("QUIT :" . (defined $_[0] ? $_[0] : "Leaving"));
# since the quit sends a line to the server, we need to flush the
# output queue to make sure it gets there so the disconnect
$self->parent->flush_output_queue();
return 1;
}
# As per the RFC, ask the server to "re-read and process its configuration
# file." Your server may or may not take additional arguments. Generally
# requires IRCop status.
sub rehash {
my $self = shift;
$self->sl("REHASH" . CORE::join(" ", @_));
}
# As per the RFC, "force a server restart itself." (Love that RFC.)
# Takes no arguments. If it succeeds, you will likely be disconnected,
# but I assume you already knew that. This sub is too simple...
sub restart {
my $self = shift;
$self->sl("RESTART");
}
# Schedules an event to be executed after some length of time.
# Takes at least 2 args: the number of seconds to wait until it's executed
# a coderef to execute when time's up
# Any extra args are passed as arguments to the user's coderef.
sub schedule {
my $self = shift;
my $time = shift;
my $coderef = shift;
unless ($coderef) {
croak 'Not enough arguments to Connection->schedule()';
}
unless (ref($coderef) eq 'CODE') {
croak 'Second argument to schedule() isn\'t a coderef';
}
print STDERR "Scheduling event with time [$time]\n" if $self->{_debug};
$time += time;
$self->parent->enqueue_scheduled_event($time, $coderef, $self, @_);
}
sub schedule_output_event {
my $self = shift;
my $time = shift;
my $coderef = shift;
unless ($coderef) {
croak 'Not enough arguments to Connection->schedule()';
}
unless (ref($coderef) eq 'CODE') {
croak 'Second argument to schedule() isn\'t a coderef';
}
print STDERR "Scheduling output event with time [$time] [$_[0]]\n" if $self->{_debug};
$time += time;
$self->parent->enqueue_output_event($time, $coderef, $self, @_);
}
# Lets J. Random IRCop connect one IRC server to another. How uninteresting.
# Takes at least 1 arg: the name of the server to connect your server with
# (optional) the port to connect them on (default 6667)
# (optional) the server to connect to arg #1. Used mainly by
# servers to communicate with each other.
sub sconnect {
my $self = shift;
unless (@_) {
croak "Not enough arguments to sconnect()";
}
$self->sl("CONNECT " . CORE::join(" ", @_));
}
# Sets/changes the IRC server which this instance should connect to.
# Takes 1 arg: the name of the server (see below for possible syntaxes)
# ((syntaxen? syntaxi? syntaces?))
sub server {
my ($self) = shift;
if (@_) {
# cases like "irc.server.com:6668"
if (index($_[0], ':') > 0) {
my ($serv, $port) = split /:/, $_[0];
if ($port =~ /\D/) {
carp "$port is not a valid port number in server()";
return;
}
$self->{_server} = $serv;
$self->port($port);
# cases like ":6668" (buried treasure!)
} elsif (index($_[0], ':') == 0 and $_[0] =~ /^:(\d+)/) {
$self->port($1);
# cases like "irc.server.com"
} else {
$self->{_server} = shift;
}
return (1);
} else {
return $self->{_server};
}
}
# sends a raw IRC line to the server, possibly with pacing
sub sl {
my $self = shift;
my $line = CORE::join '', @_;
unless (@_) {
croak "Not enough arguments to sl()";
}
if (! $self->pacing) {
return $self->sl_real($line);
}
if ($self->{_slcount} < 14) {
$self->{_slcount}++;
$self->{_lastsl} = time;
return $self->schedule_output_event(0, \&sl_real, $line);
}
# calculate how long to wait before sending this line
my $time = time;
if ($time - $self->{_lastsl} > $self->pacing) {
$self->{_lastsl} = $time;
} else {
$self->{_lastsl} += $self->pacing;
}
my $seconds = $self->{_lastsl} - $time;
if ($seconds == 0) {
$self->{_slcount} = 0;
}
### DEBUG DEBUG DEBUG
if ($self->{_debug}) {
print STDERR "S-> $seconds $line\n";
}
$self->schedule_output_event($seconds, \&sl_real, $line);
}
# Sends a raw IRC line to the server.
# Corresponds to the internal sirc function of the same name.
# Takes 1 arg: string to send to server. (duh. :)
sub sl_real {
my $self = shift;
my $line = shift;
unless ($line) {
croak "Not enough arguments to sl_real()";
}
### DEBUG DEBUG DEBUG
if ($self->{_debug}) {
print STDERR ">>> $line\n";
}
return unless defined $self->socket;
# RFC compliance can be kinda nice...
my $rv = $self->ssl ?
$self->socket->print("$line\015\012") :
$self->socket->send("$line\015\012", 0);
unless ($rv) {
$self->handler("sockerror");
return;
}
return $rv;
}
# Tells any server that you're an oper on to disconnect from the IRC network.
# Takes at least 1 arg: the name of the server to disconnect
# (optional) a comment about why it was disconnected
sub squit {
my $self = shift;
unless (@_) {
croak "Not enough arguments to squit()";
}
$self->sl("SQUIT $_[0]" . ($_[1] ? " :$_[1]" : ""));
}
# Gets various server statistics for the specified host.
# Takes at least 2 arg: the type of stats to request [chiklmouy]
# (optional) the server to request from (default is current server)
sub stats {
my $self = shift;
unless (@_) {
croak "Not enough arguments passed to stats()";
}
$self->sl("STATS $_[0]" . ($_[1] ? " $_[1]" : ""));
}
# If anyone still has SUMMON enabled, this will implement it for you.
# If not, well...heh. Sorry. First arg mandatory: user to summon.
# Second arg optional: a server name.
sub summon {
my $self = shift;
unless (@_) {
croak "Not enough arguments passed to summon()";
}
$self->sl("SUMMON $_[0]" . ($_[1] ? " $_[1]" : ""));
}
# Requests timestamp from specified server. Easy enough, right?
# Takes 1 optional arg: a server name/mask to query
# renamed to not collide with things... -- aburke
sub timestamp {
my ($self, $serv) = (shift, undef);
$self->sl("TIME" . ($_[0] ? " $_[0]" : ""));
}
# Sends request for current topic, or changes it to something else lame.
# Takes at least 1 arg: the channel whose topic you want to screw around with
# (optional) the new topic you want to impress everyone with
sub topic {
my $self = shift;
unless (@_) {
croak "Not enough arguments to topic()";
}
# Can you tell I've been reading the Nethack source too much? :)
$self->sl("TOPIC $_[0]" . ($_[1] ? " :$_[1]" : ""));
}
# Sends a trace request to the server. Whoop.
# Take 1 optional arg: the server or nickname to trace.
sub trace {
my $self = shift;
$self->sl("TRACE" . ($_[0] ? " $_[0]" : ""));
}
# This method submitted by Dave Schmitt <dschmi1@umbc.edu>. Thanks, Dave!
sub unignore {
my $self = shift;
croak "Not enough arguments to unignore()" unless @_;
if (@_ == 1) {
if (exists $self->{_ignore}->{$_[0]}) {
return @{ $self->{_ignore}->{$_[0]} };
} else {
return ();
}
} elsif (@_ > 1) { # code defensively, remember...
my $type = shift;
# I moved this part further down as an Obsessive Efficiency
# Initiative. It shouldn't be a problem if I do _parse right...
# ... but those are famous last words, eh?
unless (grep {$_ eq $type}
qw(public msg ctcp notice channel nick other all)) {
carp "$type isn't a valid type to unignore()";
return;
}
if ( exists $self->{_ignore}->{$type} ) {
# removes all specifed entries ala _Perl_Cookbook_ recipe 4.7
my @temp = @{$self->{_ignore}->{$type}};
@{$self->{_ignore}->{$type}}= ();
my %seen = ();
foreach my $item (@_) { $seen{$item}=1 }
foreach my $item (@temp) {
push(@{$self->{_ignore}->{$type}}, $item)
unless ($seen{$item});
}
} else {
carp "no ignore entry for $type to remove";
}
}
}
# Requests userhost info from the server.
# Takes at least 1 arg: nickname(s) to look up.
sub userhost {
my $self = shift;
unless (@_) {
croak 'Not enough args to userhost().';
}
$self->sl("USERHOST " . CORE::join (" ", @_));
}
# Sends a users request to the server, which may or may not listen to you.
# Take 1 optional arg: the server to query.
sub users {
my $self = shift;
$self->sl("USERS" . ($_[0] ? " $_[0]" : ""));
}
# Asks the IRC server what version and revision of ircd it's running. Whoop.
# Takes 1 optional arg: the server name/glob. (default is current server)
sub version {
my $self = shift;
$self->sl("VERSION" . ($_[0] ? " $_[0]" : ""));
}
# Sends a message to all opers on the network. Hypothetically.
# Takes 1 arg: the text to send.
sub wallops {
my $self = shift;
unless ($_[0]) {
croak 'No arguments passed to wallops()';
}
$self->sl("WALLOPS :" . CORE::join("", @_));
}
# Asks the server about stuff, you know. Whatever. Pass the Fritos, dude.
# Takes 2 optional args: the bit of stuff to ask about
# an "o" (nobody ever uses this...)
sub who {
my $self = shift;
# Obfuscation!
$self->sl("WHO" . (@_ ? " @_" : ""));
}
# If you've gotten this far, you probably already know what this does.
# Takes at least 1 arg: nickmasks or channels to /whois
sub whois {
my $self = shift;
unless (@_) {
croak "Not enough arguments to whois()";
}
return $self->sl("WHOIS " . CORE::join(",", @_));
}
# Same as above, in the past tense.
# Takes at least 1 arg: nick to do the /whowas on
# (optional) max number of hits to display
# (optional) server or servermask to query
sub whowas {
my $self = shift;
unless (@_) {
croak "Not enough arguments to whowas()";
}
return $self->sl("WHOWAS $_[0]" . ($_[1] ? " $_[1]" : "") .
(($_[1] && $_[2]) ? " $_[2]" : ""));
}
# This sub executes the default action for an event with no user-defined
# handlers. It's all in one sub so that we don't have to make a bunch of
# separate anonymous subs stuffed in a hash.
sub _default {
my ($self, $event) = @_;
my $verbose = $self->verbose;
# Users should only see this if the programmer (me) fucked up.
unless ($event) {
croak "You EEEEEDIOT!!! Not enough args to _default()!";
}
# Reply to PING from server as quickly as possible.
if ($event->type eq "ping") {
$self->sl("PONG " . (CORE::join ' ', $event->args));
} elsif ($event->type eq "disconnect") {
# I violate OO tenets. (It's consensual, of course.)
unless (keys %{$self->parent->{_connhash}} > 0) {
die "No active connections left, exiting...\n";
}
}
return 1;
}
1;
__END__
=head1 NAME
Net::IRC::Connection - Object-oriented interface to a single IRC connection
=head1 SYNOPSIS
Hard hat area: This section under construction.
=head1 DESCRIPTION
This documentation is a subset of the main Net::IRC documentation. If
you haven't already, please "perldoc Net::IRC" before continuing.
Net::IRC::Connection defines a class whose instances are individual
connections to a single IRC server. Several Net::IRC::Connection objects may
be handled simultaneously by one Net::IRC object.
=head1 METHOD DESCRIPTIONS
This section is under construction, but hopefully will be finally written up
by the next release. Please see the C<irctest> script and the source for
details about this module.
=head1 AUTHORS
Conceived and initially developed by Greg Bacon E<lt>gbacon@adtran.comE<gt> and
Dennis Taylor E<lt>dennis@funkplanet.comE<gt>.
Ideas and large amounts of code donated by Nat "King" Torkington E<lt>gnat@frii.comE<gt>.
Currently being hacked on, hacked up, and worked over by the members of the
Net::IRC developers mailing list. For details, see
http://www.execpc.com/~corbeau/irc/list.html .
=head1 URL
Up-to-date source and information about the Net::IRC project can be found at
http://netirc.betterbox.net/ .
=head1 SEE ALSO
=over
=item *
perl(1).
=item *
RFC 1459: The Internet Relay Chat Protocol
=item *
http://www.irchelp.org/, home of fine IRC resources.
=back
=cut
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