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|
# -----------------------------------------------------------------------------
# $Id: Cache.pm 11365 2008-05-10 14:58:28Z topia $
# -----------------------------------------------------------------------------
# copyright (C) 2003-2004 Topia <topia@clovery.jp>. all rights reserved.
package Client::Cache;
use strict;
use warnings;
use base qw(Module);
use Mask;
use Multicast;
use NumericReply;
sub MODE_CACHE_FORCE_SENDED (){0;}
sub MODE_CACHE_SENDED (){1;}
sub MODE_CACHE_EXPIRE_TIME (){5 * 60;}
sub WHO_CACHE_EXPIRE_TIME (){5 * 60;}
sub new {
my $class = shift;
my $this = $class->SUPER::new(@_);
$this->{hook} = IrcIO::Client::Hook->new(
sub {
my ($hook, $client, $ch_name, $network, $ch) = @_;
if ($ch->remark('switches-are-known') &&
$this->_yesno($this->config->use_mode_cache)) {
# 送信できる場合は強制的に送信してみる
my $remark = $client->remark('mode-cache-state') || {};
$this->_send_mode_cache($client,$ch_name,$ch);
$remark->{
Multicast::attach($ch->name, $network)
}->[MODE_CACHE_FORCE_SENDED] = 1;
$client->remark('mode-cache-state', $remark);
}
})->install('channel-info');
$this;
}
sub destruct {
my ($this) = shift;
# hook を解除
$this->{hook} and $this->{hook}->uninstall;
# チャンネルについている remark を削除。
foreach my $network (RunLoop->shared_loop->networks_list) {
foreach my $ch ($network->channels_list) {
$ch->remark(__PACKAGE__."/fetching-switches", undef, 'delete');
$ch->remark(__PACKAGE__."/fetching-switches-expire", undef, 'delete');
$ch->remark(__PACKAGE__."/fetching-who", undef, 'delete');
$ch->remark(__PACKAGE__."/fetching-who-expire", undef, 'delete');
}
}
# クライアントについてるのは削除しない。
}
sub _yesno {
my ($this, $value, $default) = @_;
return $default || 0 if (!defined $value);
return 0 if ($value =~ /[fn]/); # false/no
return 1 if ($value =~ /[ty]/); # true/yes
return 1 if ($value); # 数値判定
return 0;
}
sub message_io_hook {
my ($this,$msg,$io,$type) = @_;
if ($io->isa('IrcIO::Server')) {
if ($type eq 'out' &&
$msg->command eq 'MODE' &&
Multicast::channel_p($msg->param(0)) &&
!defined $msg->param(1)) {
my $ch = $io->channel($msg->param(0));
if (defined $ch) {
$ch->remark(__PACKAGE__."/fetching-switches", 1);
$ch->remark(__PACKAGE__."/fetching-switches-expire",
time() + MODE_CACHE_EXPIRE_TIME);
}
} elsif ($type eq 'in' &&
$msg->command eq RPL_CHANNELMODEIS &&
Multicast::channel_p($msg->param(1))) {
my $ch = $io->channel($msg->param(1));
if (defined $ch) {
$ch->remark(__PACKAGE__."/fetching-switches", undef, 'delete');
$ch->remark(__PACKAGE__."/fetching-switches-expire", undef, 'delete');
}
} elsif ($type eq 'out' &&
$msg->command eq 'WHO' &&
Multicast::channel_p($msg->param(0))) {
my $ch = $io->channel($msg->param(0));
if (defined $ch) {
$ch->remark(__PACKAGE__."/fetching-who", 1);
$ch->remark(__PACKAGE__."/fetching-who-expire",
time() + WHO_CACHE_EXPIRE_TIME);
}
} elsif ($type eq 'in' &&
$msg->command eq RPL_WHOREPLY &&
Multicast::channel_p($msg->param(1))) {
# 処理の都合上、一つでも帰ってきた時点で取り消し。
my $ch = $io->channel($msg->param(1));
if (defined $ch) {
$ch->remark(__PACKAGE__."/fetching-who", undef, 'delete');
$ch->remark(__PACKAGE__."/fetching-who-expire", undef, 'delete');
}
} elsif ($type eq 'in' &&
$msg->command eq RPL_ENDOFWHO &&
Multicast::channel_p($msg->param(1))) {
my $ch = $io->channel($msg->param(1));
if (defined $ch) {
$ch->remark(__PACKAGE__."/fetching-who", undef, 'delete');
$ch->remark(__PACKAGE__."/fetching-who-expire", undef, 'delete');
}
}
}
return $msg;
}
sub message_arrived {
my ($this,$msg,$sender) = @_;
# 条件をはずれていたら last で抜ける
while (1) {
# クライアントからのメッセージか？
last unless ($sender->isa('IrcIO::Client'));
# 動作は許可されているか?
last unless ((!defined $sender->option('no-cache')) ||
!$this->_yesno($sender->option('no-cache')));
my $fetch_channel_info = sub {
my %ret;
$ret{chan_long} = shift;
($ret{chan_short}, $ret{network_name}) =
Multicast::detach($ret{chan_long});
$ret{network} = RunLoop->shared_loop->network($ret{network_name});
unless (defined $ret{network}) {
} else {
$ret{ch} = $ret{network}->channel($ret{chan_short});
$ret{chan_send} = RunLoop->shared_loop->multi_server_mode_p ?
$ret{chan_long} : $ret{chan_short};
}
return %ret;
};
if ($msg->command eq 'MODE' &&
$this->_yesno($this->config->use_mode_cache) &&
Multicast::channel_p($msg->param(0)) &&
!defined $msg->param(1)) {
my %info = $fetch_channel_info->($msg->param(0));
unless (defined $info{network}){
# network not found. maybe disconnected
last;
}
last if !defined $info{ch};
if ($info{ch}->remark('switches-are-known')) {
my $remark = $sender->remark('mode-cache-state') || {};
my $ch_remark = $remark->{$info{chan_long}};
if (!$ch_remark->[MODE_CACHE_SENDED]) {
$this->_send_mode_cache($sender,
$info{chan_send},
$info{ch})
if (!$ch_remark->[MODE_CACHE_FORCE_SENDED]);
$ch_remark->[MODE_CACHE_SENDED] = 1;
$sender->remark('mode-cache-state', $remark);
return undef;
}
} else {
if ($info{ch}->remark(__PACKAGE__."/fetching-switches") &&
($info{ch}->remark(__PACKAGE__."/fetching-switches-expire") >= time())) {
# 取得しているクライアントがいて、期限が切れてないなら、
# 今回は消して便乗。
return undef;
}
# 取得しにいってもらう。
}
} elsif ($msg->command eq 'WHO' &&
$this->_yesno($this->config->use_who_cache) &&
Multicast::channel_p($msg->param(0))) {
my %info = $fetch_channel_info->($msg->param(0));
unless (defined $info{network}){
# network not found. maybe disconnected
last;
}
last if !defined $info{ch};
my $remark = $sender->remark('who-cache-used') || {};
if (!exists $remark->{$info{chan_long}}) {
# cache がそろっているかわからないため、
# とりあえず作ってみて、足りなかったらあきらめる。
my $message_tmpl = $this->construct_irc_message(
Prefix => RunLoop->shared_loop->sysmsg_prefix('system'),
Command => RPL_WHOREPLY,
Params => [
RunLoop->shared_loop->current_nick,
$info{chan_send},
],
);
my @messages;
eval {
foreach (values %{$info{ch}->names}) {
my $p_ch = $_;
my $p = $p_ch->person;
# たいして重要でない上、
# 捏造が簡単なデータは捏造します。
# 注意してください。
if (!$p->username || !$p->userhost ||
!$p->realname || !$p->server) {
# データ不足。あきらめる。
die 'cache data not enough';
}
my $message = $message_tmpl->clone;
$message->param(2, $p->username);
$message->param(3, $p->userhost);
$message->param(4, $p->server);
$message->param(5,
Multicast::global_to_local($p->nick,
$info{network}));
$message->param(6,
(length($p->away) ? 'G' : 'H') .
$p_ch->priv_symbol);
$message->param(7,
$info{network}->remark('server-hops')
->{$p->server}.' '.
$p->realname);
push(@messages, $message);
}
};
if (!$@) {
my $message = $message_tmpl->clone;
$message->command(RPL_ENDOFWHO);
$message->param(2, 'End of WHO list.');
push(@messages, $message);
map {
$sender->send_message($_);
} @messages;
$remark->{$info{chan_long}} = 1;
$sender->remark('who-cache-used', $remark);
return undef;
} else {
if ($info{ch}->remark(__PACKAGE__."/fetching-who") &&
($info{ch}->remark(__PACKAGE__."/fetching-who-expire") >= time())) {
# 取得しているクライアントがいて、期限が切れてないなら、
# 今回は消して便乗。
return undef;
}
# 取得しにいってもらう。
}
}
}
last;
}
return $msg;
}
sub _send_mode_cache {
my ($this,$sendto,$ch_name,$ch) = @_;
$sendto->send_message(
$this->construct_irc_message(
Prefix => RunLoop->shared_loop->sysmsg_prefix('system'),
Command => RPL_CHANNELMODEIS,
Params => [
RunLoop->shared_loop->current_nick,
$ch_name,
$ch->mode_string,
],
Remarks => {
'fill-prefix-when-sending-to-client' => 1,
},
)
);
if (defined $ch->remark('creation-time')) {
$sendto->send_message(
$this->construct_irc_message(
Prefix => RunLoop->shared_loop->sysmsg_prefix('system'),
Command => RPL_CREATIONTIME,
Params => [
RunLoop->shared_loop->current_nick,
$ch_name,
$ch->remark('creation-time'),
],
Remarks => {
'fill-prefix-when-sending-to-client' => 1,
},
)
);
}
}
1;
=pod
info: データをキャッシュしてサーバに問い合わせないようにする
default: off
section: important
# キャッシュを使用しても、使われるのは接続後最初の一度だけです。
# 二度目からは通常通りにサーバに問い合わせます。
# また、クライアントオプションの no-cache を指定すれば動きません。
# mode キャッシュを使用するか
use-mode-cache: 1
# who キャッシュを使用するか
use-who-cache: 1
=cut
|
