Category: | PerlMonks Related Scripts |
Author/Contact Info | Ingo Blechschmidt iblech@web.de |
Description: | This program acts as an IRC server to broadcast the Perlmonks chatterbox to clients.
On connect, every client is force-joined into #perlmonkscb. List of /NAMES or /WHOIS, /WHO etc. don't work. Note: Some clients (e.g. Konversation) detect the lag by /MSGing themselves. This, obviously, won't work. Other clients (irssi) use the supported PING command. The parsing work is done by XML::Simple, POE is responsible for the networking stuff. |
#!/usr/bin/perl use warnings; use strict; # All the modules we need... use POE; use POE::Component::Server::TCP; use POE::Component::Client::HTTP; use HTTP::Request; use XML::Simple; # URL of the chatterbox XML feed use constant PMCB => "http://www.perlmonks.org/index.pl?node_id=207304 +"; # Port to listen on use constant PORT => 6668; # Check above URL every ... seconds use constant UPDATE_INTERVAL => 120; # Spawn a new PoCoCl::HTTP session to fetch the XML feed POE::Component::Client::HTTP->spawn( Agent => "POE PMCM2IRCD", Alias => "http", Streaming => 0, FollowRedirects => 5 ); POE::Session->create( inline_states => { _start => sub { $_[KERNEL]->alias_set("pmcb"); # MSGID of newest message seen $_[HEAP]->{last} = 0; # Hash of session-id => event-handler pairs, w +here to send new msgs to $_[HEAP]->{watchers} = {}; $_[KERNEL]->yield("update"); }, update => sub { # Fetch XML feed, but only if we have clients +connected! $_[KERNEL]->post(http => "request", updated => + HTTP::Request->new(GET => PMCB)) if(keys %{ $_[HEAP]->{watchers} }); $_[KERNEL]->delay(update => UPDATE_INTERVAL); }, updated => sub { eval { my $struct = XML::Simple::XMLin($_[ARG1]->[0]- +>content); foreach my $msg (@{ $struct->{message} }) { # We've already seen this msg. next if($msg->{message_id} <= $_[HEAP] +->{last}); # Maybe it's a new newest msg? $_[HEAP]->{last} = $msg->{message_id} +if($msg->{message_id} > $_[HEAP]->{last}); # Filter out any newlines. $msg->{text} =~ s/[\012\015]//g; # For debugging purposes. print "<$msg->{author}> $msg->{text}\n +"; # Broadcast to clients. foreach my $id (keys %{ $_[HEAP]->{wat +chers} }) { $_[KERNEL]->post($id => $_[HEA +P]->{watchers}->{$id}, $msg->{author} => $msg->{text}); } } }}, # Add or remove a watcher add_watch => sub { $_[HEAP]->{watchers}->{$_[SENDER]-> +ID} = $_[ARG0] }, del_watch => sub { delete $_[HEAP]->{watchers}->{$_[SE +NDER]->ID} } } ); POE::Component::Server::TCP->new( Port => PORT, ClientInput => sub { # Basic IRC handshake: # NICK mynick # USER [...] # :server 001 mynick :Hi! # :server 376 mynick :End of /MOTD # Some clients use +the 376-response as i'm-now-logged-in-indicator for($_[ARG0]) { # Remember chosen nick. /^NICK (.+)$/i and $_[HEAP]->{nick} = $1, last +; # Disconnect client. /^QUIT/i and $_[KERNEL]->yield("shutdown +"), last; # Answer PING requests. /^PING/i and $_[HEAP]->{client}->put(":s +erver PONG server :$_[HEAP]->{nick}"), last; # Force-join user into #perlmonkscb and regist +er interest on new msgs. /^USER/i and $_[KERNEL]->post(pmcb => "add_watch", +"new_msg"), $_[HEAP]->{client}->put(split /\n/, << +HELLO), last; :server 001 $_[HEAP]->{nick} :Hi! :server 376 $_[HEAP]->{nick} :End of /MOTD :$_[HEAP]->{nick}!cloaked\@cloaked JOIN :#perlmonkscb :server 332 $_[HEAP]->{nick} #perlmonkscb :Perlmonks chatterbox -- vis +it http://www.perlmonks.org/ HELLO } }, # Client disconnected -- delete watcher. ClientDisconnected => sub { $_[KERNEL]->post(pmcb => "del_watc +h") }, ClientError => sub { $_[KERNEL]->post(pmcb => "del_watc +h") }, InlineStates => { # Send client a new msg. new_msg => sub { $_[HEAP]->{client}->put( sprintf ":%s!cloaked\@cloaked PRIVMSG +#perlmonkscb :%s", $_[ARG0], $_[ARG1] ) } } ); print STDERR "Up and running.\n"; POE::Kernel->run; |
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