--- trunk/irc-logger.pl	2006/02/27 11:54:38	4
+++ trunk/irc-logger.pl	2007/02/03 12:18:04	45
@@ -2,15 +2,47 @@
 use strict;
 $|++;
 
+=head1 NAME
+
+irc-logger.pl
+
+=head1 SYNOPSIS
+
+./irc-logger.pl
+
+=head2 Options
+
+=over 4
+
+=item --import-dircproxy=filename
+
+Import log from C<dircproxy> to C<irc-logger> database
+
+=item --log=irc-logger.log
+
+Name of log file
+
+=back
+
+=head1 DESCRIPTION
+
+log all conversation on irc channel
+
+=cut
+
 ## CONFIG
 
+my $HOSTNAME = `hostname`;
+
 my $NICK = 'irc-logger';
+$NICK .= '-dev' if ($HOSTNAME =~ m/llin/);
 my $CONNECT =
   {Server => 'irc.freenode.net',
    Nick => $NICK,
-   Ircname => 'logger: ask dpavlin@rot13.org'
+   Ircname => "try /msg $NICK help",
   };
 my $CHANNEL = '#razmjenavjestina';
+$CHANNEL = '#irc-logger' if ($HOSTNAME =~ m/llin/);
 my $IRC_ALIAS = "log";
 
 my %FOLLOWS =
@@ -19,50 +51,594 @@
    ERROR => "/var/log/apache/error.log",
   );
 
+my $DSN = 'DBI:Pg:dbname=' . $NICK;
+
+my $ENCODING = 'ISO-8859-2';
+my $TIMESTAMP = '%Y-%m-%d %H:%M:%S';
+
+my $sleep_on_error = 5;
+
 ## END CONFIG
 
+
+
+use POE qw(Component::IRC Wheel::FollowTail Component::Server::HTTP);
+use HTTP::Status;
+use DBI;
+use Encode qw/from_to is_utf8/;
+use Regexp::Common qw /URI/;
+use CGI::Simple;
+use HTML::TagCloud;
+use POSIX qw/strftime/;
+use HTML::CalendarMonthSimple;
+use Getopt::Long;
+use DateTime;
+use Data::Dump qw/dump/;
+
+my $import_dircproxy;
+my $log_path;
+GetOptions(
+	'import-dircproxy:s' => \$import_dircproxy,
+	'log:s' => \$log_path,
+);
+
+open(STDOUT, '>', $log_path) || warn "can't redirect log to $log_path: $!";
+
+sub _log {
+	print strftime($TIMESTAMP,localtime()), ' ', join(" ",@_), $/;
+}
+
+my $dbh = DBI->connect($DSN,"","", { RaiseError => 1, AutoCommit => 1 }) || die $DBI::errstr;
+
+eval {
+	$dbh->do(qq{ select count(*) from log });
+};
+
+if ($@) {
+	warn "creating database table in $DSN\n";
+	$dbh->do(<<'_SQL_SCHEMA_');
+
+create table log (
+	id serial,
+	time timestamp default now(),
+	channel text not null,
+	me boolean default false,
+	nick text not null,
+	message text not null,
+	primary key(id)
+);
+
+create index log_time on log(time);
+create index log_channel on log(channel);
+create index log_nick on log(nick);
+
+_SQL_SCHEMA_
+}
+
+my $sth = $dbh->prepare(qq{
+insert into log
+	(channel, me, nick, message, time)
+values (?,?,?,?,?)
+});
+
+my $tags;
+my $tag_regex = '\b([\w-_]+)//';
+
+=head2 get_from_log
+
+ my @messages = get_from_log(
+  	limit => 42,
+	search => '%what to stuff in ilike%',
+	fmt => {
+		time => '{%s} ',
+		time_channel => '{%s %s} ',
+		nick => '%s: ',
+		me_nick => '***%s ',
+		message => '%s',
+	},
+	filter => {
+		message => sub {
+			# modify message content
+			return shift;
+		}
+	},
+	context => 5,
+	full_rows => 1,
+ );
+
+Order is important. Fields are first passed through C<filter> (if available) and
+then throgh C<< sprintf($fmt->{message}, $message >> if available.
+
+C<context> defines number of messages around each search hit for display.
+
+C<full_rows> will return database rows for each result with C<date>, C<time>, C<channel>,
+C<me>, C<nick> and C<message> keys.
+
+=cut
+
+sub get_from_log {
+	my $args = {@_};
+
+	$args->{fmt} ||= {
+		date => '[%s] ',
+		time => '{%s} ',
+		time_channel => '{%s %s} ',
+		nick => '%s: ',
+		me_nick => '***%s ',
+		message => '%s',
+	};
+
+	my $sql_message = qq{
+		select
+			time::date as date,
+			time::time as time,
+			channel,
+			me,
+			nick,
+			message
+		from log
+	};
+
+	my $sql_context = qq{
+		select
+			id
+		from log
+	};
+
+	my $context = $1 if ($args->{search} && $args->{search} =~ s/\s*\+(\d+)\s*/ /);
+
+	my $sql = $context ? $sql_context : $sql_message;
+
+	$sql .= " where message ilike ? or nick ilike ? " if ($args->{search});
+	$sql .= " where id in (" . join(",", @{ $tags->{ $args->{tag} } }) . ") " if ($args->{tag} && $tags->{ $args->{tag} });
+	$sql .= " where date(time) = ? " if ($args->{date});
+	$sql .= " order by log.time desc";
+	$sql .= " limit " . $args->{limit} if ($args->{limit});
+
+	my $sth = $dbh->prepare( $sql );
+	if (my $search = $args->{search}) {
+		$search =~ s/^\s+//;
+		$search =~ s/\s+$//;
+		$sth->execute( ( '%' . $search . '%' ) x 2 );
+		_log "search for '$search' returned ", $sth->rows, " results ", $context || '';
+	} elsif (my $tag = $args->{tag}) {
+		$sth->execute();
+		_log "tag '$tag' returned ", $sth->rows, " results ", $context || '';
+	} elsif (my $date = $args->{date}) {
+		$sth->execute($date);
+		_log "found ", $sth->rows, " messages for date $date ", $context || '';
+	} else {
+		$sth->execute();
+	}
+	my $last_row = {
+		date => '',
+		time => '',
+		channel => '',
+		nick => '',
+	};
+
+	my @rows;
+
+	while (my $row = $sth->fetchrow_hashref) {
+		unshift @rows, $row;
+	}
+
+	# normalize nick names
+	map {
+		$_->{nick} =~ s/^_*(.*?)_*$/$1/
+	} @rows;
+
+	return @rows if ($args->{full_rows});
+
+	my @msgs = (
+		"Showing " . ($#rows + 1) . " messages..."
+	);
+
+	if ($context) {
+		my @ids = @rows;
+		@rows = ();
+
+		my $last_to = 0;
+
+		my $sth = $dbh->prepare( $sql_message . qq{ where id >= ? and id < ? } );
+		foreach my $row_id (sort { $a->{id} <=> $b->{id} } @ids) {
+			my $id = $row_id->{id} || die "can't find id in row";
+	
+			my ($from, $to) = ($id - $context, $id + $context);
+			$from = $last_to if ($from < $last_to);
+			$last_to = $to;
+			$sth->execute( $from, $to );
+
+			#warn "## id: $id from: $from to: $to returned: ", $sth->rows, "\n";
+
+			while (my $row = $sth->fetchrow_hashref) {
+				push @rows, $row;
+			}
+
+		}
+	}
+
+	# sprintf which can take coderef as first parametar
+	sub cr_sprintf {
+		my $fmt = shift || return;
+		if (ref($fmt) eq 'CODE') {
+			$fmt->(@_);
+		} else {
+			sprintf($fmt, @_);
+		}
+	}
+
+	foreach my $row (@rows) {
+
+		$row->{time} =~ s#\.\d+##;
+
+		my $msg = '';
+
+		$msg = cr_sprintf($args->{fmt}->{date}, $row->{date}) . ' ' if ($last_row->{date} ne $row->{date});
+		my $t = $row->{time};
+
+		if ($last_row->{channel} ne $row->{channel}) {
+			$msg .= cr_sprintf($args->{fmt}->{time_channel}, $t, $row->{channel});
+		} else {
+			$msg .= cr_sprintf($args->{fmt}->{time}, $t);
+		}
+
+		my $append = 1;
+
+		my $nick = $row->{nick};
+#		if ($nick =~ s/^_*(.*?)_*$/$1/) {
+#			$row->{nick} = $nick;
+#		}
+
+		if ($last_row->{nick} ne $nick) {
+			# obfu way to find format for me_nick if needed or fallback to default
+			my $fmt = $row->{me} ? ( $args->{fmt}->{me_nick} || $args->{fmt}->{nick} ) : $args->{fmt}->{nick};
+			$fmt ||= '%s';
+
+			$nick = $args->{filter}->{nick}->($nick) if (ref($args->{filter}->{nick}) eq 'CODE');
+
+			$msg .= cr_sprintf( $fmt, $nick );
+			$append = 0;
+		}
+
+		$args->{fmt}->{message} ||= '%s';
+		if (ref($args->{filter}->{message}) eq 'CODE') {
+			$msg .= cr_sprintf($args->{fmt}->{message},
+				$args->{filter}->{message}->(
+					$row->{message}
+				)
+			);
+		} else {
+			$msg .= cr_sprintf($args->{fmt}->{message}, $row->{message});
+		}
+
+		if ($append && @msgs) {
+			$msgs[$#msgs] .= " " . $msg;
+		} else {
+			push @msgs, $msg;
+		}
+
+		$last_row = $row;
+	}
+
+	return @msgs;
+}
+
+# tags support
+
+my $cloud = HTML::TagCloud->new;
+
+=head2 add_tag
+
+ add_tag( id => 42, message => 'irc message' );
+
+=cut
+
+sub add_tag {
+	my $arg = {@_};
+
+	return unless ($arg->{id} && $arg->{message});
+
+	my $m = $arg->{message};
+	from_to('UTF-8', 'iso-8859-2', $m) if (is_utf8($m));
+
+	while ($m =~ s#$tag_regex##s) {
+		my $tag = $1;
+		next if (! $tag || $tag =~ m/https?:/i);
+		push @{ $tags->{$tag} }, $arg->{id};
+		#warn "+tag $tag: $arg->{id}\n";
+		$cloud->add($tag, "?tag=$tag", scalar @{$tags->{$tag}} + 1);
+	}
+}
+
+=head2 seed_tags
+
+Read all tags from database and create in-memory cache for tags
+
+=cut
+
+sub seed_tags {
+	my $sth = $dbh->prepare(qq{ select id,message from log where message like '%//%' });
+	$sth->execute;
+	while (my $row = $sth->fetchrow_hashref) {
+		add_tag( %$row );
+	}
+
+	foreach my $tag (keys %$tags) {
+		$cloud->add($tag, "?tag=$tag", scalar @{$tags->{$tag}} + 1);
+	}
+}
+
+seed_tags;
+
+
+=head2 save_message
+
+  save_message(
+  	channel => '#foobar',
+	me => 0,
+	nick => 'dpavlin',
+	msg => 'test message',
+	time => '2006-06-25 18:57:18',
+  );
+
+C<time> is optional, it will use C<< now() >> if it's not available.
+
+C<me> if not specified will be C<0> (not C</me> message)
+
+=cut
+
+sub save_message {
+	my $a = {@_};
+	$a->{me} ||= 0;
+	$a->{time} ||= strftime($TIMESTAMP,localtime());
+
+	_log
+		$a->{channel}, " ",
+		$a->{me} ? "***" . $a->{nick} : "<" . $a->{nick} . ">",
+		" " . $a->{msg};
+
+	from_to($a->{msg}, 'UTF-8', $ENCODING);
+
+	$sth->execute($a->{channel}, $a->{me}, $a->{nick}, $a->{msg}, $a->{time});
+	add_tag( id => $dbh->last_insert_id(undef,undef,"log",undef),
+		message => $a->{msg});
+}
+
+if ($import_dircproxy) {
+	open(my $l, $import_dircproxy) || die "can't open $import_dircproxy: $!";
+	warn "importing $import_dircproxy...\n";
+	my $tz_offset = 2 * 60 * 60;	# TZ GMT+2
+	while(<$l>) {
+		chomp;
+		if (/^@(\d+)\s(\S+)\s(.+)$/) {
+			my ($time, $nick, $msg) = ($1,$2,$3);
+
+			my $dt = DateTime->from_epoch( epoch => $time + $tz_offset );
+
+			my $me = 0;
+			$me = 1 if ($nick =~ m/^\[\S+]/);
+			$nick =~ s/^[\[<]([^!]+).*$/$1/;
+
+			$msg =~ s/^ACTION\s+// if ($me);
+
+			save_message(
+				channel => $CHANNEL,
+				me => $me,
+				nick => $nick,
+				msg => $msg,
+				time => $dt->ymd . " " . $dt->hms,
+			) if ($nick !~ m/^-/);
+
+		} else {
+			_log "can't parse: $_";
+		}
+	}
+	close($l);
+	warn "import over\n";
+	exit;
+}
+
+
+#
+# POE handing part
+#
+
 my $SKIPPING = 0;               # if skipping, how many we've done
 my $SEND_QUEUE;                 # cache
-
-use POE qw(Component::IRC Wheel::FollowTail);
+my $ping;						# ping stats
 
 POE::Component::IRC->new($IRC_ALIAS);
 
-POE::Session->create
-  (inline_states =>
+POE::Session->create( inline_states =>
    {_start => sub {      
-      $_[KERNEL]->post($IRC_ALIAS => register => 'all');
-      $_[KERNEL]->post($IRC_ALIAS => connect => $CONNECT);
+		$_[KERNEL]->post($IRC_ALIAS => register => 'all');
+		$_[KERNEL]->post($IRC_ALIAS => connect => $CONNECT);
     },
-    irc_255 => sub {            # server is done blabbing
-      $_[KERNEL]->post($IRC_ALIAS => join => $CHANNEL);
-      $_[KERNEL]->post($IRC_ALIAS => join => '#logger');
-      $_[KERNEL]->yield("heartbeat"); # start heartbeat
-#      $_[KERNEL]->yield("my_add", $_) for keys %FOLLOWS;
+    irc_255 => sub {	# server is done blabbing
+		$_[KERNEL]->post($IRC_ALIAS => join => $CHANNEL);
+		$_[KERNEL]->post($IRC_ALIAS => join => '#logger');
+		$_[KERNEL]->yield("heartbeat"); # start heartbeat
+#		$_[KERNEL]->yield("my_add", $_) for keys %FOLLOWS;
+		$_[KERNEL]->post( $IRC_ALIAS => privmsg => 'nickserv', "IDENTIFY $NICK" );
     },
     irc_public => sub {
-	  my $kernel = $_[KERNEL];
-	  my $nick = (split /!/, $_[ARG0])[0];
-	  my $channel = $_[ARG1]->[0];
-	  my $msg = $_[ARG2];
-
-	  print "$channel: <$nick> $msg\n";
-    },
-    (map
-     {
-       ;"irc_$_" => sub { }}
-     qw(join
-     	ctcp_version
-        connected snotice ctcp_action ping notice mode part quit
-        001 002 003 004 005
-        250 251 252 253 254 265 266
-        332 333 353 366 372 375 376)),
+		my $kernel = $_[KERNEL];
+		my $nick = (split /!/, $_[ARG0])[0];
+		my $channel = $_[ARG1]->[0];
+		my $msg = $_[ARG2];
+
+		save_message( channel => $channel, me => 0, nick => $nick, msg => $msg);
+    },
+    irc_ctcp_action => sub {
+		my $kernel = $_[KERNEL];
+		my $nick = (split /!/, $_[ARG0])[0];
+		my $channel = $_[ARG1]->[0];
+		my $msg = $_[ARG2];
+
+		save_message( channel => $channel, me => 1, nick => $nick, msg => $msg);
+    },
+	irc_ping => sub {
+		warn "pong ", $_[ARG0], $/;
+		$ping->{$_[ARG0]++};
+	},
+	irc_invite => sub {
+		my $kernel = $_[KERNEL];
+		my $nick = (split /!/, $_[ARG0])[0];
+		my $channel = $_[ARG1];
+		
+
+		warn "invited to $channel by $nick";
+
+		$_[KERNEL]->post( $IRC_ALIAS => privmsg => $nick, "how nice of you to invite me to $channel, I'll be right there..." );
+		$_[KERNEL]->post($IRC_ALIAS => join => $channel);
+
+	},
+	irc_msg => sub {
+		my $kernel = $_[KERNEL];
+		my $nick = (split /!/, $_[ARG0])[0];
+		my $msg = $_[ARG2];
+		from_to($msg, 'UTF-8', $ENCODING);
+
+		my $res = "unknown command '$msg', try /msg $NICK help!";
+		my @out;
+
+		_log "<< $msg";
+
+		if ($msg =~ m/^help/i) {
+
+			$res = "usage: /msg $NICK comand | commands: stat - user/message stat | last - show backtrace | grep foobar - find foobar";
+
+		} elsif ($msg =~ m/^msg\s+(\S+)\s+(.*)$/i) {
+
+			_log ">> /msg $1 $2";
+			$_[KERNEL]->post( $IRC_ALIAS => privmsg => $1, $2 );
+			$res = '';
+
+		} elsif ($msg =~ m/^stat.*?\s*(\d*)/i) {
+
+			my $nr = $1 || 10;
+
+			my $sth = $dbh->prepare(qq{
+				select
+					nick,
+					count(*) as count,
+					sum(length(message)) as len
+				from log
+				group by nick
+				order by len desc,count desc
+				limit $nr
+			});
+			$sth->execute();
+			$res = "Top $nr users: ";
+			my @users;
+			while (my $row = $sth->fetchrow_hashref) {
+				push @users,$row->{nick} . ': ' . $row->{count} . '/' . $row->{len} . '=' . sprintf("%.2f", $row->{len}/$row->{count});
+			}
+			$res .= join(" | ", @users);
+		} elsif ($msg =~ m/^last.*?\s*(\d*)/i) {
+
+			foreach my $res (get_from_log( limit => ($1 || 100) )) {
+				_log "last: $res";
+				from_to($res, $ENCODING, 'UTF-8');
+				$_[KERNEL]->post( $IRC_ALIAS => privmsg => $nick, $res );
+			}
+
+			$res = '';
+
+		} elsif ($msg =~ m/^(search|grep)\s+(.*)\s*$/i) {
+
+			my $what = $2;
+
+			foreach my $res (get_from_log(
+					limit => 20,
+					search => $what,
+				)) {
+				_log "search [$what]: $res";
+				from_to($res, $ENCODING, 'UTF-8');
+				$_[KERNEL]->post( $IRC_ALIAS => privmsg => $nick, $res );
+			}
+
+			$res = '';
+
+		} elsif ($msg =~ m/^(?:count|poll)\s+(.*)(?:\s+(\d+))?\s*$/i) {
+
+			my ($what,$limit) = ($1,$2);
+			$limit ||= 100;
+
+			my $stat;
+
+			foreach my $res (get_from_log(
+					limit => $limit,
+					search => $what,
+					full_rows => 1,
+				)) {
+				while ($res->{message} =~ s/\Q$what\E(\+|\-)//) {
+					$stat->{vote}->{$1}++;
+					$stat->{from}->{ $res->{nick} }++;
+				}
+			}
+
+			my @nicks;
+			foreach my $nick (sort { $stat->{from}->{$a} <=> $stat->{from}->{$b} } keys %{ $stat->{from} }) {
+				push @nicks, $nick . ( $stat->{from}->{$nick} == 1 ? '' :
+					"(" . $stat->{from}->{$nick} . ")"
+				);
+			}
+
+			$res =
+				"$what ++ " . ( $stat->{vote}->{'+'} || 0 ) .
+				" : " . ( $stat->{vote}->{'-'} || 0 ) . " --" .
+				" from " . ( join(", ", @nicks) || 'nobody' );
+
+			$_[KERNEL]->post( $IRC_ALIAS => notice => $nick, $res );
+
+		} elsif ($msg =~ m/^ping/) {
+			$res = "ping = " . dump( $ping );
+		}
+
+		if ($res) {
+			_log ">> [$nick] $res";
+			from_to($res, $ENCODING, 'UTF-8');
+			$_[KERNEL]->post( $IRC_ALIAS => privmsg => $nick, $res );
+		}
+
+	},
+	irc_477 => sub {
+		_log "# irc_477: ",$_[ARG1];
+		$_[KERNEL]->post( $IRC_ALIAS => privmsg => 'nickserv', "register $NICK" );
+	},
+	irc_505 => sub {
+		_log "# irc_505: ",$_[ARG1];
+		$_[KERNEL]->post( $IRC_ALIAS => privmsg => 'nickserv', "register $NICK" );
+#		$_[KERNEL]->post( $IRC_ALIAS => privmsg => 'nickserv', "set hide email on" );
+#		$_[KERNEL]->post( $IRC_ALIAS => privmsg => 'nickserv', "set email dpavlin\@rot13.org" );
+	},
+	irc_registered => sub {
+		_log "## registrated $NICK";
+		$_[KERNEL]->post( $IRC_ALIAS => privmsg => 'nickserv', "IDENTIFY $NICK" );
+	},
+	irc_disconnected => sub {
+		_log "## disconnected, reconnecting again";
+		$_[KERNEL]->post($IRC_ALIAS => connect => $CONNECT);
+	},
+	irc_socketerr => sub {
+		_log "## socket error... sleeping for $sleep_on_error seconds and retry";
+		sleep($sleep_on_error);
+		$_[KERNEL]->post($IRC_ALIAS => connect => $CONNECT);
+	},
+#	irc_433 => sub {
+#		print "# irc_433: ",$_[ARG1], "\n";
+#		warn "## indetify $NICK\n";
+#		$_[KERNEL]->post( $IRC_ALIAS => privmsg => 'nickserv', "IDENTIFY $NICK" );
+#	},
     _child => sub {},
     _default => sub {
-      printf "%s: session %s caught an unhandled %s event.\n",
-        scalar localtime(), $_[SESSION]->ID, $_[ARG0];
-      print "The $_[ARG0] event was given these parameters: ",
-        join(" ", map({"ARRAY" eq ref $_ ? "[@$_]" : "$_"} @{$_[ARG1]})), "\n";
+		_log sprintf "sID:%s %s %s",
+			$_[SESSION]->ID, $_[ARG0],
+			ref($_[ARG1]) eq "ARRAY"	?	join(",", map { ref($_) eq "ARRAY" ? join(";", @{$_}) : $_ } @{ $_[ARG1] })	:
+			$_[ARG1]					?	$_[ARG1]					:
+			"";
       0;                        # false for signals
     },
     my_add => sub {
@@ -128,4 +704,140 @@
    },
   );
 
+# http server
+
+my $httpd = POE::Component::Server::HTTP->new(
+	Port => $NICK =~ m/-dev/ ? 8001 : 8000,
+	ContentHandler => { '/' => \&root_handler },
+	Headers        => { Server => 'irc-logger' },
+);
+
+my %escape = ('<'=>'&lt;', '>'=>'&gt;', '&'=>'&amp;', '"'=>'&quot;');
+my $escape_re  = join '|' => keys %escape;
+
+my $style = <<'_END_OF_STYLE_';
+p { margin: 0; padding: 0.1em; }
+.time, .channel { color: #808080; font-size: 60%; }
+.date { float: right; background: #e0e0e0; color: #404040; font-size: 120%; padding: 0.25em; border: 1px dashed #808080; }
+.nick { color: #000000; font-size: 80%; padding: 2px; font-family: courier, courier new, monospace ; }
+.message { color: #000000; font-size: 100%; }
+.search { float: right; }
+.col-0 { background: #ffff66 }
+.col-1 { background: #a0ffff }
+.col-2 { background: #99ff99 }
+.col-3 { background: #ff9999 }
+.col-4 { background: #ff66ff }
+a:link.tag, a:visited.tag { border: 1px dashed #ccc; backgound: #ccc; text-decoration: none }
+a:hover.tag { border: 1px solid #eee }
+hr { border: 1px dashed #ccc; height: 1px; clear: both; }
+_END_OF_STYLE_
+
+my $max_color = 4;
+
+my %nick_enumerator;
+
+sub root_handler {
+	my ($request, $response) = @_;
+	$response->code(RC_OK);
+	$response->content_type("text/html; charset=$ENCODING");
+
+	my $q;
+
+	if ( $request->method eq 'POST' ) {
+		$q = new CGI::Simple( $request->content );
+	} elsif ( $request->uri =~ /\?(.+)$/ ) {
+		$q = new CGI::Simple( $1 );
+	} else {
+		$q = new CGI::Simple;
+	}
+
+	my $search = $q->param('search') || $q->param('grep') || '';
+
+	my $html =
+		qq{<html><head><title>$NICK</title><style type="text/css">$style} .
+		$cloud->css .
+		qq{</style></head><body>} .
+		qq{
+		<form method="post" class="search" action="/">
+		<input type="text" name="search" value="$search" size="10">
+		<input type="submit" value="search">
+		</form>
+		} .
+		$cloud->html(500) .
+		qq{<p>};
+	if ($request->url =~ m#/history#) {
+		my $sth = $dbh->prepare(qq{
+			select date(time) as date,count(*) as nr
+				from log
+				group by date(time)
+				order by date(time) desc
+		});
+		$sth->execute();
+		my ($l_yyyy,$l_mm) = (0,0);
+		my $cal;
+		while (my $row = $sth->fetchrow_hashref) {
+			# this is probably PostgreSQL specific, expects ISO date
+			my ($yyyy,$mm,$dd) = split(/-/, $row->{date});
+			if ($yyyy != $l_yyyy || $mm != $l_mm) {
+				$html .= $cal->as_HTML() if ($cal);
+				$cal = new HTML::CalendarMonthSimple('month'=>$mm,'year'=>$yyyy);
+				$cal->border(2);
+				($l_yyyy,$l_mm) = ($yyyy,$mm);
+			}
+			$cal->setcontent($dd, qq{
+				<a href="/?date=$row->{date}">$row->{nr}</a>
+			});
+		}
+		$html .= $cal->as_HTML() if ($cal);
+
+	} else {
+		$html .= join("</p><p>",
+			get_from_log(
+				limit => $q->param('last') || $q->param('date') ? undef : 100,
+				search => $search || undef,
+				tag => $q->param('tag') || undef,
+				date => $q->param('date') || undef,
+				fmt => {
+					date => sub {
+						my $date = shift || return;
+						qq{<hr/><div class="date"><a href="/?date=$date">$date</a></div>};
+					},
+					time => '<span class="time">%s</span> ',
+					time_channel => '<span class="channel">%s %s</span> ',
+					nick => '%s:&nbsp;',
+					me_nick => '***%s&nbsp;',
+					message => '<span class="message">%s</span>',
+				},
+				filter => {
+					message => sub {
+						my $m = shift || return;
+						$m =~ s/($escape_re)/$escape{$1}/gs;
+						$m =~ s#($RE{URI}{HTTP})#<a href="$1">$1</a>#gs;
+						$m =~ s#$tag_regex#<a href="?tag=$1" class="tag">$1</a>#g;
+						return $m;
+					},
+					nick => sub {
+						my $n = shift || return;
+						if (! $nick_enumerator{$n})  {
+							my $max = scalar keys %nick_enumerator;
+							$nick_enumerator{$n} = $max + 1;
+						}
+						return '<span class="nick col-' .
+							( $nick_enumerator{$n} % $max_color ) .
+							'">' . $n . '</span>';
+					},
+				},
+			)
+		);
+	}
+
+	$html .= qq{</p>
+	<hr/>
+	<p>See <a href="/history">history</a> of all messages.</p>
+	</body></html>};
+
+	$response->content( $html );
+	return RC_OK;
+}
+
 POE::Kernel->run;