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elmex |
1.1 |
=head1 NET::IRC::Server |
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NET::IRCServer - a module to handle the IRC Protocol and implements a lightweight IRC Server (without server-to-server support) |
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=head1 SYNOPSIS |
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use NET::IRC::Server; |
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$server = NET::IRC::Server->new (srv_prefix => "mein.irc.server.funtzt.net"); |
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$s->set_send_cb (sub { ... }); |
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$s->parse_irc_stream (...) |
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=cut |
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package Net::IRC::Server; |
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use Data::Dumper; |
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use strict; |
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use warnings; |
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=head1 METHODS |
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=over 4 |
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=cut |
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=item new (srv_prefix => $server_prefix) |
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srv_prefix - the prefix the server will use for irc commands from itself |
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=cut |
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sub new { |
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my $class = shift; |
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my $self = { @_ }; |
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bless $self, $class; |
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return $self; |
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} |
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elmex |
1.5 |
=item set_send_cb ($sub, [$command]) |
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elmex |
1.1 |
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The code-ref in the C<$sub> will be called everythime the server wants to send data to a client. |
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elmex |
1.5 |
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If the C<$command> argument is given, the callback will only be called for irc-commands that match |
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C<$command>. If the callback returns a true value when it's matched to a C<$command> the alternative callback |
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(given without the C<$command>) won't be called. |
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elmex |
1.1 |
The callback will be called with following arguments: |
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elmex |
1.5 |
$sub->($client, $data, $prefix, $command, $trailing, @params) |
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elmex |
1.1 |
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elmex |
1.5 |
$client - the client datastructure you give C<parse_irc_stream ()> |
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$data - the raw data to send out, for example on a socket |
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$prefix - irc message prefix (may be undefined) |
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$command - irc command |
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$trailing - the trailing irc parameter |
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@params - the other params or the irc message |
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elmex |
1.1 |
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=cut |
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sub set_send_cb { |
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elmex |
1.5 |
my ($self, $cb, $cmd) = @_; |
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if (defined $cmd) { |
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$self->{send_cb_cmd}->{uc $cmd} = $cb; |
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} else { |
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$self->{send_cb} = $cb; |
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} |
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elmex |
1.1 |
} |
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elmex |
1.5 |
=item set_cmd_cb ($cmd, $cb) |
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Sets the command callback for the irc-command C<$cmd>. |
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The callback is executed B<before> the command is evaluated |
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by the server. If you want to prevent evaluation by the server |
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later, you have to return a true value. Otherwise the server |
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will evaluate the command and sends responses. |
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There is are following special events/commands you can register |
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a callback for, set C<$cmd> to: |
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'*' - to receive all commands |
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'!' - client successfully registered (after he send |
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PASS, NICK and USER and all commands were successful, |
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NOTE: the returnvalue of this callback will be ignored) |
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Arguments of the callback are like: |
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$cb->($client, $ircmsg); |
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$client - the client datastructure for this command |
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$ircmsg - the irc-message hash containing: |
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{ |
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prefix => <irc-prefix>, |
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command => <irc-command>, |
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params => <irc-params including trailing>, |
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trailing => <the trailing parameter, also included in params> |
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} |
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=cut |
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elmex |
1.1 |
sub set_cmd_cb { |
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my ($self, $cmd, $cb) = @_; |
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$self->{cmd_cbs}->{uc $cmd} = $cb; |
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} |
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elmex |
1.4 |
sub set_post_cmd_cb { |
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my ($self, $cmd, $cb) = @_; |
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$self->{post_cmd_cbs}->{uc $cmd} = $cb; |
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} |
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elmex |
1.2 |
=item send_srv_msg ($client, @msg) |
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Sends a irc-message to C<$client> with the server-prefix. |
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@msg should look like: (<command>, <trailing>, <param-1>, ..., <param-n>) |
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=cut |
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sub send_srv_msg { |
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my ($self, $client, @msg) = @_; |
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$self->send_msg ($client, $self->{srv_prefix}, @msg); |
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} |
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=item send_msg ($client, @msg) |
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Sends a irc-message to C<$client>. |
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@msg should look like: (<prefix>, <command>, <trailing>, <param-1>, ..., <param-n>) |
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=cut |
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elmex |
1.1 |
sub send_msg { |
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my ($self, $client, @msg) = @_; |
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elmex |
1.5 |
my $r; |
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$r = $self->{send_cb_cmd}->{uc $msg[1]}->($client, $self->mk_msg (@msg), @msg) |
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if defined $self->{send_cb_cmd}->{uc $msg[1]}; |
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$self->{send_cb}->($client, $self->mk_msg (@msg), @msg) |
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if defined $self->{send_cb} and not $r; |
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elmex |
1.1 |
} |
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elmex |
1.2 |
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=item send_nameslist ($client, $channel) |
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This sends the names-list of C<$channel> to the C<$client>. |
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=cut |
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sub send_nameslist { |
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my ($self, $client, $channel) = @_; |
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# TODO: Modes for users! Look here too: |
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my @names = map { $_->{nickname} } values %{$self->{channels}->{lc $channel}}; |
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# TODO: Look for channel modes! |
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my $i = 0; |
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my @part; |
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while (@names) { |
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$i++; |
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push @part, shift @names; |
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if ($i % 10 == 0) { |
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elmex |
1.5 |
$self->send_srv_msg ($client, "353", join (' ', @part), $client->{nickname}, "=", $channel); |
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elmex |
1.2 |
@part = (); |
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} |
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} |
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if (@part) { |
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$self->send_srv_msg ($client, "353", join (' ', @part), $client->{nickname}, "=", $channel); |
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} |
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$self->send_srv_msg ($client, "366", "End of NAMES list", $client->{nickname}, $channel); |
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} |
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elmex |
1.1 |
sub mk_msg { |
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my ($self, $prefix, $command, $trail, @params) = @_; |
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my $msg = ""; |
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$msg .= defined $prefix ? ":$prefix " : ""; |
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$msg .= "$command"; |
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map { $msg .= " $_" } @params; |
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$msg .= defined $trail ? " :$trail" : ""; |
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$msg .= "\r\n"; |
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return $msg; |
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} |
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sub mk_clpref { |
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my ($self, $client) = @_; |
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return $client->{nickname}."!".$client->{username}.'@'.$client->{hostname}; |
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} |
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elmex |
1.5 |
=item feed_irc_data ($client, $data) |
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Feeds raw IRC C<$data> for processing. When enough data for a command was |
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feeded the command is handled and the callbacks set with C<set_cmd_cb> and C<set_post_cmd_cb> |
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will be called. When the server wants to send a response he calls the callback set with C<set_send_cb>. |
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The C<$client> data structure has to contain the C<hostname>-key, so the server can generate the irc |
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message prefix for that client in his replys. |
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In the callbacks the C<$client> data structure will be filled with followin keys: |
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$client = { |
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registered => <a flag (may be undef) whether the client finished the |
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registration process and has a valid nickname and username>, |
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nickname => <the nickname the client currently has>, |
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username => <the username the client send when he logged in>, |
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password => <the password the client send when logged in>, |
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hostname => <this is what you have to provide>, |
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channels => { <channel-name> => 1, <channel2-name> => 1, ..., <channeln-name> } |
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(a hash of channel names the client is currently joined ) |
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}; |
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=cut |
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sub feed_irc_data { |
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elmex |
1.1 |
my ($self, $client, $data) = @_; |
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$self->{buffer} .= $data; |
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while ($self->{buffer} =~ s/^([^\r\n]*)\r?\n//) { |
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push @{$self->{msgs}}, $1; |
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} |
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map { $self->handle_irc_msg ($client, $self->parse_irc_msg ($_)) } @{$self->{msgs}}; |
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$self->{msgs} = []; |
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} |
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sub handle_irc_msg { |
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my ($self, $cl, $msg) = @_; |
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return if not defined $msg; |
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elmex |
1.2 |
my $c = uc $msg->{command}; |
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elmex |
1.1 |
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my $r; |
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elmex |
1.5 |
$r ||= $self->{cmd_cbs}->{$c}->($cl, $msg) |
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if defined $self->{cmd_cbs}->{$c}; |
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$r ||= $self->{cmd_cbs}->{"*"}->($cl, $msg) |
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if defined $self->{cmd_cbs}->{"*"}; |
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elmex |
1.1 |
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if ($r) { |
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warn "notihgn to do skip srv code\n"; |
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return |
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} |
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if ($c eq "USER") { |
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$cl->{username} = $msg->{params}->[0]; |
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$cl->{realname} = $msg->{params}->[3]; |
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} elsif ($c eq "NICK") { |
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my $n = $msg->{params}->[0]; |
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$self->change_nick ($n, $cl); |
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} |
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if (defined $cl->{username} |
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and defined $cl->{nickname} |
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and not $cl->{registered}) |
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{ |
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$self->send_msg ($cl, $self->{srv_prefix}, "001", |
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"Welcome to NET::IRCServer! " |
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. $self->mk_clpref ($cl), $cl->{nickname}); |
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$cl->{registered} = 1; |
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elmex |
1.5 |
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$self->{cmd_cbs}->{"!"}->($cl, $msg) |
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if defined $self->{cmd_cbs}->{"!"}; |
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elmex |
1.1 |
} |
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if ($c eq "PASS") { |
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$cl->{password} = $msg->{params}->[0]; |
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} elsif ($c eq "JOIN") { |
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my @chnls = split /,/, $msg->{params}->[0]; |
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my @keys; |
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@keys = split /,/, $msg->{params}->[1] if defined $msg->{params}->[1]; |
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$self->join_channel ($cl, $_, pop @keys) for @chnls; |
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} elsif ($c eq "PART") { |
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my @chnls = split /,/, $msg->{params}->[0]; |
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$self->part_channel ($cl, $_, $msg->{params}->[1]) for @chnls; |
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} elsif ($c eq "NOTICE" or $c eq "PRIVMSG") { |
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$self->generic_msg ($cl, $msg->{params}->[0], $c, $msg->{params}->[1]); |
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elmex |
1.2 |
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} elsif ($c eq "QUIT") { |
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$self->quit ($cl, $msg->{params}->[0]); |
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} elsif ($c eq "NAMES") { |
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if (defined $msg->{params}->[1]) { |
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$self->send_srv_msg ($cl,"402", "No such server", $msg->{params}->[1]); |
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} elsif (defined $msg->{params}->[0]) { |
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my @chans = split /,/, $msg->{params}->[0]; |
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$self->send_nameslist ($cl, $_) for @chans; |
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} else { |
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$self->send_nameslist ($cl, $_) for keys %{$self->{channels}}; |
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} |
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} elsif ($c eq "PING") { |
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if (defined $msg->{params}->[1]) { |
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$self->send_srv_msg ($cl,"402", "No such server", $msg->{params}->[1]); |
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} else { |
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$self->send_srv_msg ($cl, "PONG", $msg->{params}->[0]); |
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} |
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} else { |
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$self->send_srv_msg ($cl, "421", "Unknown command", $c) |
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if $c ne "USER" and $c ne "NICK"; # handled above |
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elmex |
1.1 |
} |
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elmex |
1.4 |
$self->{post_cmd_cbs}->{$c}->($cl, $msg) if defined $self->{post_cmd_cbs}->{$c}; |
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$self->{post_cmd_cbs}->{"*"}->($cl, $msg) if defined $self->{post_cmd_cbs}->{"*"}; |
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elmex |
1.1 |
} |
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elmex |
1.2 |
=item quit ($client, $quitmsg) |
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| 322 |
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It will remove the C<$client> from all lists in the server, and broadcasts the |
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C<$quitmsg> to all users on the channels the C<$client> was. |
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=cut |
| 326 |
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sub quit { |
| 327 |
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my ($self, $client, $quitmsg) = @_; |
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$self->channel_brdcst ( |
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$self->mk_clpref ($client), |
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$_, |
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"QUIT", |
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$quitmsg) for keys %{$client->{channels}}; |
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| 335 |
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$self->remove_channel ($client, $_) for keys %{$client->{channels}}; |
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} |
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elmex |
1.1 |
=item part_channel ($client, $channel, $reason) |
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| 340 |
elmex |
1.3 |
It will remove the C<$client> from the C<$channel> and will broadcast a PART to all members of that channel. |
| 341 |
elmex |
1.1 |
The part C<$reason> may be undefined. |
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| 343 |
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=cut |
| 344 |
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sub part_channel { |
| 345 |
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my ($self, $client, $chan, $reas) = @_; |
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| 347 |
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$self->channel_brdcst ($self->mk_clpref ($client), $chan, "PART", $reas, $chan); |
| 348 |
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$self->remove_channel ($client, $chan); |
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} |
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=item join_channel ($client, $channel, $key) |
| 352 |
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| 353 |
elmex |
1.3 |
It will add the C<$client> to the C<$channel> and will broadcast a JOIN to all members of that channel. |
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|
| 355 |
elmex |
1.1 |
=cut |
| 356 |
|
|
sub join_channel { |
| 357 |
|
|
my ($self, $client, $chan, $key) = @_; |
| 358 |
|
|
|
| 359 |
|
|
if ($chan eq "0") { |
| 360 |
|
|
# part all channels of $client |
| 361 |
|
|
$self->part_channel ($client, $_) for keys %{$client->{channels}}; |
| 362 |
|
|
$self->remove_channel ($client, $_) for keys %{$client->{channels}}; |
| 363 |
|
|
|
| 364 |
|
|
} else { |
| 365 |
|
|
$self->add_channel ($client, $chan); |
| 366 |
|
|
$self->channel_brdcst ($self->mk_clpref ($client), $chan, "JOIN", $chan); |
| 367 |
elmex |
1.2 |
$self->send_nameslist ($client, $chan); |
| 368 |
elmex |
1.1 |
} |
| 369 |
|
|
} |
| 370 |
|
|
|
| 371 |
elmex |
1.4 |
=item get_user_list ($channel) |
| 372 |
|
|
|
| 373 |
|
|
Get's the userlist of the $channel in the form: |
| 374 |
|
|
{ nickname => client-structure, ... } |
| 375 |
|
|
|
| 376 |
|
|
=cut |
| 377 |
|
|
sub get_user_list { |
| 378 |
|
|
my ($self, $channel) = @_; |
| 379 |
|
|
return $self->{channels}->{lc $channel}; |
| 380 |
|
|
} |
| 381 |
|
|
|
| 382 |
elmex |
1.5 |
=item register_nick ($client, $nick) |
| 383 |
|
|
|
| 384 |
|
|
Registers the nickname C<$nick> in the server and sets it's |
| 385 |
|
|
client data structure to C<$client>. |
| 386 |
|
|
|
| 387 |
|
|
=cut |
| 388 |
|
|
sub register_nick { |
| 389 |
|
|
my ($self, $client, $nick) = @_; |
| 390 |
|
|
$self->{reg_nicks}->{lc $nick} = $client; |
| 391 |
|
|
} |
| 392 |
|
|
|
| 393 |
|
|
=item get_nick ($nick) |
| 394 |
|
|
|
| 395 |
|
|
Returns the client datastructure for nickname C<$nick> or |
| 396 |
|
|
undef if there is no such nick; |
| 397 |
|
|
|
| 398 |
|
|
=cut |
| 399 |
|
|
sub get_nick { |
| 400 |
|
|
my ($self, $nick) = @_; |
| 401 |
|
|
$self->{reg_nicks}->{lc $nick}; |
| 402 |
|
|
} |
| 403 |
|
|
|
| 404 |
|
|
=item unregister_nick ($nick) |
| 405 |
|
|
|
| 406 |
|
|
Unregisters the nickname C<$nick> in the server. |
| 407 |
|
|
|
| 408 |
|
|
=cut |
| 409 |
|
|
sub unregister_nick { |
| 410 |
|
|
my ($self, $client, $nick) = @_; |
| 411 |
|
|
delete $self->{reg_nicks}->{lc $client->{nickname}}; |
| 412 |
|
|
} |
| 413 |
|
|
|
| 414 |
elmex |
1.1 |
sub add_channel { |
| 415 |
|
|
my ($self, $client, $channel) = @_; |
| 416 |
|
|
$self->{channels}->{lc $channel}->{lc $client->{nickname}} = $client; |
| 417 |
|
|
$client->{channels}->{lc $channel} = 1; |
| 418 |
|
|
} |
| 419 |
|
|
|
| 420 |
|
|
sub remove_channel { |
| 421 |
|
|
my ($self, $client, $channel) = @_; |
| 422 |
|
|
delete $self->{channels}->{lc $channel}->{lc $client->{nickname}}; |
| 423 |
|
|
delete $client->{channels}->{lc $channel}; |
| 424 |
|
|
} |
| 425 |
|
|
|
| 426 |
elmex |
1.5 |
=item channel_exists ($channel) |
| 427 |
|
|
|
| 428 |
|
|
Return true if there are clients who are joined to that channel. |
| 429 |
|
|
|
| 430 |
|
|
=cut |
| 431 |
|
|
sub channel_exists { |
| 432 |
|
|
my ($self, $channel) = @_; |
| 433 |
|
|
|
| 434 |
|
|
return undef |
| 435 |
|
|
if not defined $self->{channels}->{lc $channel}; |
| 436 |
|
|
return |
| 437 |
|
|
(scalar (keys %{$self->{channels}->{lc $channel}}) != 0); |
| 438 |
|
|
} |
| 439 |
|
|
|
| 440 |
elmex |
1.1 |
sub channel_brdcst { |
| 441 |
|
|
my ($self, $prefix, $channel, $command, @rmsg) = @_; |
| 442 |
|
|
$self->channel_brdcst_exclude (undef, $prefix, $channel, $command, @rmsg); |
| 443 |
|
|
} |
| 444 |
|
|
|
| 445 |
|
|
sub channel_brdcst_exclude { |
| 446 |
|
|
my ($self, $excl_cl, $prefix, $channel, $command, @rmsg) = @_; |
| 447 |
|
|
|
| 448 |
|
|
for (values %{$self->{channels}->{lc $channel}}) { |
| 449 |
elmex |
1.2 |
|
| 450 |
elmex |
1.1 |
if (not (defined $excl_cl) or $excl_cl != $_) { |
| 451 |
elmex |
1.2 |
|
| 452 |
elmex |
1.1 |
$self->send_msg ($_, $prefix, uc $command, @rmsg); |
| 453 |
|
|
} |
| 454 |
|
|
} |
| 455 |
|
|
} |
| 456 |
|
|
|
| 457 |
|
|
|
| 458 |
|
|
sub generic_msg { |
| 459 |
|
|
my ($self, $client, $target, $msgcmd, $msg) = @_; |
| 460 |
|
|
|
| 461 |
|
|
my $pref = $self->mk_clpref ($client); |
| 462 |
|
|
|
| 463 |
|
|
if (exists $self->{channels}->{lc $target}) { |
| 464 |
|
|
$self->channel_brdcst_exclude ($client, $pref, $target, uc ($msgcmd), $msg, $target); |
| 465 |
|
|
} else { |
| 466 |
elmex |
1.5 |
$self->send_msg ($self->get_nick ($target), $pref, uc ($msgcmd), $msg, $target); |
| 467 |
elmex |
1.1 |
} |
| 468 |
|
|
} |
| 469 |
|
|
|
| 470 |
|
|
|
| 471 |
|
|
sub change_nick { |
| 472 |
|
|
my ($self, $nick, $client) = @_; |
| 473 |
|
|
|
| 474 |
|
|
# check wether the nick to change to is already in use |
| 475 |
elmex |
1.5 |
if ($self->get_nick ($nick)) { |
| 476 |
elmex |
1.1 |
$self->send_msg ($client, $self->{srv_prefix}, 433, "Nickname is already in use", $nick); |
| 477 |
|
|
return; |
| 478 |
|
|
} |
| 479 |
|
|
|
| 480 |
|
|
my %ppltotell; # hash-list of people to send a nick-update |
| 481 |
|
|
|
| 482 |
|
|
if (defined $client->{nickname}) { |
| 483 |
|
|
|
| 484 |
|
|
# update channels the client is on |
| 485 |
|
|
for my $c (keys %{$client->{channels}}) { |
| 486 |
|
|
|
| 487 |
|
|
# search the people to tell this nick changed |
| 488 |
|
|
for (values %{$self->{channels}->{lc $c}}) { |
| 489 |
|
|
$ppltotell{$_->{nickname}} = $_; |
| 490 |
|
|
} |
| 491 |
|
|
|
| 492 |
|
|
# change the nickname in the channel lists |
| 493 |
|
|
delete $self->{channels}->{lc $c}->{$client->{nickname}}; |
| 494 |
elmex |
1.5 |
$self->{channels}->{lc $c}->{lc $nick} = $client; |
| 495 |
elmex |
1.1 |
} |
| 496 |
|
|
} |
| 497 |
|
|
|
| 498 |
|
|
if ($client->{registered}) { # only tell if this client is registered |
| 499 |
|
|
|
| 500 |
|
|
# send us and others that the nick changed |
| 501 |
|
|
$ppltotell{$client->{nickname}} = $client; |
| 502 |
|
|
my $oldprfx = $self->mk_clpref ($client); |
| 503 |
|
|
$self->send_msg ($_, $oldprfx, "NICK", undef, $nick) for values %ppltotell; |
| 504 |
|
|
} |
| 505 |
|
|
|
| 506 |
|
|
# now update the client data |
| 507 |
elmex |
1.5 |
$self->unregister_nick ($client->{nickname}); |
| 508 |
|
|
|
| 509 |
elmex |
1.1 |
$client->{nickname} = $nick; |
| 510 |
elmex |
1.5 |
$self->register_nick ($client, $client->{nickname}); |
| 511 |
elmex |
1.1 |
|
| 512 |
|
|
return 1; |
| 513 |
|
|
} |
| 514 |
|
|
|
| 515 |
|
|
sub parse_irc_msg { |
| 516 |
|
|
my ($self, $msg) = @_; |
| 517 |
|
|
|
| 518 |
elmex |
1.2 |
my $cmd; |
| 519 |
|
|
my $pref; |
| 520 |
|
|
my $t; |
| 521 |
|
|
my @a; |
| 522 |
|
|
|
| 523 |
|
|
my $p = $msg =~ s/^(:([^ ]+)[ ])?([A-Za-z]+|\d{3})//; |
| 524 |
|
|
$pref = $2; |
| 525 |
|
|
$cmd = $3; |
| 526 |
elmex |
1.1 |
|
| 527 |
elmex |
1.2 |
my $i = 0; |
| 528 |
|
|
|
| 529 |
|
|
while ($msg =~ s/^[ ]([^ :\r\n\0][^ \r\n\0]*)//) { |
| 530 |
elmex |
1.1 |
|
| 531 |
elmex |
1.2 |
push @a, $1 if defined $1; |
| 532 |
|
|
if (++$i > 13) { last; } |
| 533 |
|
|
} |
| 534 |
|
|
|
| 535 |
|
|
if ($i == 14) { |
| 536 |
|
|
|
| 537 |
|
|
if ($msg =~ s/^[ ]:?([^\r\n\0]*)//) { |
| 538 |
|
|
$t = $1 if $1 ne ""; |
| 539 |
|
|
} |
| 540 |
|
|
|
| 541 |
|
|
} else { |
| 542 |
|
|
|
| 543 |
|
|
if ($msg =~ s/^[ ]:([^\r\n\0]*)//) { |
| 544 |
|
|
$t = $1 if $1 ne ""; |
| 545 |
|
|
} |
| 546 |
|
|
} |
| 547 |
|
|
|
| 548 |
|
|
push @a, $t if defined $t; |
| 549 |
elmex |
1.1 |
|
| 550 |
|
|
my $m = { prefix => $pref, command => $cmd, params => \@a, trailing => $t }; |
| 551 |
|
|
return $p ? $m : undef; |
| 552 |
|
|
} |
| 553 |
|
|
|
| 554 |
|
|
=back |
| 555 |
|
|
|
| 556 |
|
|
=cut |
| 557 |
|
|
|
| 558 |
|
|
1; |
