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package Net::IRC3; |
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use strict; |
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use AnyEvent; |
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use IO::Socket::INET; |
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use Exporter; |
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our @ISA = qw/Exporter/; |
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our @EXPORT_OK = |
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qw(mk_msg parse_irc_msg split_prefix prefix_nick |
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prefix_user prefix_host); |
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|
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our $ConnectionClass = 'Net::IRC3::Connection'; |
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|
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=head1 NAME |
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|
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Net::IRC3 - An IRC Protocol module which is event system independend |
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|
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=head1 VERSION |
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|
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Version 0.2 |
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|
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=cut |
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|
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our $VERSION = '0.2'; |
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|
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=head1 SYNOPSIS |
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|
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use Net::IRC3; |
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|
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my $irc3 = new Net::IRC3; |
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|
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my $con = $irc3->connect ("test.not.at.irc.net", 6667); |
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|
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... |
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|
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=head1 DESCRIPTION |
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|
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L<Net::IRC3> itself is a simple building block for an IRC client. |
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It manages connections and parses and constructs IRC messages. |
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|
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L<Net::IRC3> is I<very> simple, if you don't want to care about |
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all the other things that a client still has to do (like replying to |
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PINGs and remembering who is on a channel), I recommend to read |
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the L<Net::IRC3::Client> page instead. |
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|
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=head1 METHODS |
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|
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=over 4 |
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|
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=item B<new ()> |
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|
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This just creates a L<Net::IRC3> object, which is a management |
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class for creating and managing connections. |
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|
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=cut |
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|
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sub new |
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{ |
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my $this = shift; |
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my $class = ref($this) || $this; |
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|
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my $self = { }; |
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|
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bless $self, $class; |
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|
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return $self; |
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} |
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|
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=item B<connect ($host, $port)> |
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|
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Tries to open a socket to the host C<$host> and the port C<$port>. |
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If successfull it will return a L<Net::IRC3::Connection> object. |
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If an error occured it will die (use eval to catch the exception). |
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|
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=cut |
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|
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sub connect { |
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my ($self, $host, $port) = @_; |
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|
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defined $self->{connections}->{"$host:$port"} |
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and return; |
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|
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my $sock = IO::Socket::INET->new ( |
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PeerAddr => $host, |
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PeerPort => $port, |
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Proto => 'tcp', |
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Blocking => 0 |
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) or die "couldn't connect to irc server '$host:$port': $!\n";; |
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|
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eval "require $ConnectionClass"; |
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my $con = $ConnectionClass->new ($self, $sock, $host, $port); |
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|
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$con->{rw} = |
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AnyEvent->io (poll => 'r', fh => $sock, cb => sub { |
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my $l = sysread $sock, my $data, 1024; |
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|
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$con->feed_irc_data ($data); |
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|
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unless ($l) { |
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|
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if (defined $l) { |
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$con->disconnect ("EOF from IRC server '$host:$port'"); |
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return; |
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|
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} else { |
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$con->disconnect ("Error while reading from IRC server '$host:$port': $!"); |
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return; |
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} |
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} |
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}); |
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|
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return $con; |
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} |
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|
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=item B<connections ()> |
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|
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Returns a key value list, where the key is C<"$host:$port"> and the |
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value is the connection object. Only 'active' connections are returned. |
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That means, if a connection is terminated somehow, it will also disappear |
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from this list. |
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|
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=cut |
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|
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sub connections { |
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my ($self) = @_; |
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return %{$self->{connections}}; |
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} |
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|
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=item B<connection ($host, $port)> or B<connection ("$host:$port")> |
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|
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Returns the L<Net::IRC3::Connection> object for the C<$host> C<$port> |
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pair. If no such connection exists, undef is returned. |
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|
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=cut |
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|
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sub connection { |
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my ($self, $host, $port) = @_; |
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if ($host =~ m/^[^:]+:(\d+)$/) { |
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return $self->{connections}->{$host} |
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} else { |
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return $self->{connections}->{$host.':'.$port} |
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} |
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} |
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|
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=back |
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|
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=head1 FUNCTIONS |
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|
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These are some utility functions that might come in handy when |
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handling the IRC protocol. |
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|
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You can export these with eg.: |
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|
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use Net::IRC3 qw/parse_irc_msg/; |
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|
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=over 4 |
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|
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=item B<parse_irc_msg ($ircline)> |
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|
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This method parses the C<$ircline>, which is one line of the IRC protocol |
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without the trailing "\015\012". |
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|
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It returns a hash which has the following entrys: |
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|
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=over 4 |
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|
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=item prefix |
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|
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The message prefix. |
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|
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=item command |
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|
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The IRC command. |
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|
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=item params |
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|
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The parameters to the IRC command in a array reference, |
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this includes the trailing parameter (the one after the ':' or |
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the 14th parameter). |
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|
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=item trailing |
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|
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This is set if there was a trailing parameter (the one after the ':' or |
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the 14th parameter). |
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|
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=back |
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|
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=cut |
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|
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sub parse_irc_msg { |
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my ($msg) = @_; |
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|
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my $cmd; |
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my $pref; |
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my $t; |
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my @a; |
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|
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my $p = $msg =~ s/^(:([^ ]+)[ ])?([A-Za-z]+|\d{3})//; |
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$pref = $2; |
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$cmd = $3; |
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|
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my $i = 0; |
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|
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while ($msg =~ s/^[ ]([^ :\015\012\0][^ \015\012\0]*)//) { |
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|
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push @a, $1 if defined $1; |
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if (++$i > 13) { last; } |
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} |
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|
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if ($i == 14) { |
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|
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if ($msg =~ s/^[ ]:?([^\015\012\0]*)//) { |
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$t = $1 if $1 ne ""; |
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} |
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|
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} else { |
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|
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if ($msg =~ s/^[ ]:([^\015\012\0]*)//) { |
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$t = $1 if $1 ne ""; |
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} |
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} |
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|
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push @a, $t if defined $t; |
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|
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my $m = { prefix => $pref, command => $cmd, params => \@a, trailing => $t }; |
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return $p ? $m : undef; |
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} |
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|
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=item B<mk_msg ($prefix, $command, $trailing, @params)> |
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|
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This function assembles a IRC message. The generated |
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message will look like (pseudo code!) |
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|
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:<prefix> <command> <params> :<trail> |
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|
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Please refer to RFC 2812 how IRC messages normally look like. |
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|
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The prefix and the trailing string will be omitted if they are C<undef>. |
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|
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EXAMPLES: |
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|
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mk_msg (undef, "PRIVMSG", "you suck!", "magnus"); |
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# will return: "PRIVMSG magnus :you suck!\015\012" |
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|
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mk_msg (undef, "JOIN", undef, "#test"); |
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# will return: "JOIN #magnus\015\012" |
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|
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=cut |
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|
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sub mk_msg { |
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my ($prefix, $command, $trail, @params) = @_; |
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my $msg = ""; |
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|
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$msg .= defined $prefix ? ":$prefix " : ""; |
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$msg .= "$command"; |
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|
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# FIXME: params must be counted, and if > 13 they have to be |
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# concationated with $trail |
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map { $msg .= " $_" } @params; |
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|
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$msg .= defined $trail ? " :$trail" : ""; |
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$msg .= "\015\012"; |
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|
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return $msg; |
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} |
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|
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=item B<split_prefix ($prefix)> |
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|
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This function splits an IRC user prefix as described by RFC 2817 |
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into the three parts: nickname, user and host. Which will be |
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returned as a list with that order. |
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|
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C<$prefix> can also be a hash like it is returned by C<parse_irc_msg>. |
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|
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=cut |
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|
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sub split_prefix { |
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my ($prfx) = @_; |
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|
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if (ref ($prfx) eq 'HASH') { |
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$prfx = $prfx->{prefix}; |
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} |
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|
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$prfx =~ m/^\s*([^!]*)!([^@]*)@(.*?)\s*$/; |
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return ($1, $2, $3); |
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} |
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|
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=item B<prefix_nick ($prefix)> |
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|
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A shortcut to extract the nickname from the C<$prefix>. |
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|
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C<$prefix> can also be a hash like it is returned by C<parse_irc_msg>. |
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|
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=cut |
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|
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sub prefix_nick { |
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my ($prfx) = @_; |
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return (split_prefix ($prfx))[0]; |
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} |
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|
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=item B<prefix_user ($prefix)> |
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|
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A shortcut to extract the username from the C<$prefix>. |
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|
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C<$prefix> can also be a hash like it is returned by C<parse_irc_msg>. |
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|
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=cut |
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|
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sub prefix_user { |
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my ($prfx) = @_; |
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return (split_prefix ($prfx))[1]; |
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} |
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|
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=item B<prefix_host ($prefix)> |
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|
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A shortcut to extract the hostname from the C<$prefix>. |
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|
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C<$prefix> can also be a hash like it is returned by C<parse_irc_msg>. |
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|
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=cut |
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|
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sub prefix_host { |
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my ($self, $prfx) = @_; |
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return (split_prefix ($prfx))[2]; |
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} |
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|
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=back |
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|
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=head1 EXAMPLES |
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|
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See the samples/ directory for some examples on how to use Net::IRC3. |
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|
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=head1 AUTHOR |
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|
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Robin Redeker, C<< <elmex@ta-sa.org> >> |
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|
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=head1 SEE ALSO |
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|
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L<Net::IRC3::Connection> |
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|
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L<Net::IRC3::Client> |
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|
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RFC 2812 - Internet Relay Chat: Client Protocol |
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|
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=head1 BUGS |
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|
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Please report any bugs or feature requests to |
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C<bug-net-irc3 at rt.cpan.org>, or through the web interface at |
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L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Net-IRC3>. |
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I will be notified, and then you'll automatically be notified of progress on |
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your bug as I make changes. |
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|
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=head1 SUPPORT |
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|
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You can find documentation for this module with the perldoc command. |
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|
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perldoc Net::IRC3 |
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|
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You can also look for information at: |
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|
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=over 4 |
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|
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=item * AnnoCPAN: Annotated CPAN documentation |
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|
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L<http://annocpan.org/dist/Net-IRC3> |
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|
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=item * CPAN Ratings |
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|
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L<http://cpanratings.perl.org/d/Net-IRC3> |
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|
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=item * RT: CPAN's request tracker |
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|
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L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Net-IRC3> |
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|
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=item * Search CPAN |
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|
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L<http://search.cpan.org/dist/Net-IRC3> |
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|
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=back |
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|
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=head1 ACKNOWLEDGEMENTS |
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|
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Thanks to Marc Lehmann for the new AnyEvent module! |
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|
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=head1 COPYRIGHT & LICENSE |
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|
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Copyright 2006 Robin Redker, all rights reserved. |
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|
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This program is free software; you can redistribute it and/or modify it |
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under the same terms as Perl itself. |
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|
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=cut |
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|
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1; |
