#!/usr/local/bin/perl -w
# irc.pl
# A simple IRC robot
.# Usage: perl irc.pl
use strict;
# We will use a raw socket to connect to the IRC server.
use IO::Socket;
# The server to connect to and our details.
my $server = "irc.kampungchat.org";
my $nick = "Perlbot";
my $login = "perl";
# The channel which the bot will join.
my $channel = "#opensource";
# Connect to the IRC server.
my $sock = new IO::Socket::INET(PeerAddr => $server,
PeerPort => 6667,
Proto => 'tcp') or
die "Can't connect\n";
# Log on to the server.
print $sock "NICK $nick\r\n";
print $sock "USER $login 8 * :shah Perl IRC Robot\r\n";
# Read lines from the server until it tells us we have connected.
while (my $input = ) {
# Check the numerical responses from the server.
if ($input =~ /004/) {
# We are now logged in.
last;
}
elsif ($input =~ /433/) { die "Nickname is already in use.";
}
}
# Join the channel.
print $sock "JOIN $channel\r\n";
# Keep reading lines from the server.
while (my $input = ) {
chop $input;
if ($input =~ /^PING(.*)$/i) {
# We must respond to PINGs to avoid being disconnected.
print $sock "PONG $1\r\n";
}
else {
# Print the raw line received by the bot.
print "$input\n";
}
}
