問題は解決したと思いますが、コマンドラインのMinecraft'ping'も必要だったので、PHPコードをスタンドアロンのPerlスクリプトに移植し、他の誰かが同様のものを必要とする場合に備えて、ここで共有したいと思いました。スクリプトはコアモジュールのみを使用するため、Perlがインストールされている場所であればどこでも機能するはずです。
#!/usr/bin/perl
##############################################################################
#
# Script: mcping
#
# Author: Grant McLean <grant@mclean.net.nz>
#
# Description:
#
# 'ping' a minecraft server to check it's alive
#
use strict;
use warnings;
use IO::Socket;
use Pod::Usage;
use Getopt::Long qw(GetOptions);
use Encode qw(decode);
use Time::HiRes qw(gettimeofday tv_interval);
my(%opt);
if(!GetOptions(\%opt, 'help|?')) {
pod2usage(-exitval => 1, -verbose => 0);
}
pod2usage(-exitstatus => 0, -verbose => 2) if $opt{help};
my $target = shift or pod2usage(
-exitval => 1, -verbose => 0, -message => 'No host specified'
);
my $port = 25565;
if($target =~ /(.*?):(\d+)$/) {
$target = $1;
$port = $2;
}
ping_server($target, $port);
exit 0;
sub ping_server {
my($host, $port) = @_;
my $t0 = [gettimeofday];
my $s = IO::Socket->new(
Domain => AF_INET,
PeerAddr => $host,
PeerPort => $port,
Proto => 'tcp',
) || die "$!\n";
$s->autoflush(1);
print $s "\xFE";
sysread($s, my $resp, 256);
my $elapsed = tv_interval($t0);
die "Malformed response after connect\n" unless $resp =~ /^\xFF/;
substr($resp, 0, 3, '');
$resp = decode('UCS-2', $resp);
my($motd, $players, $max_players) = split /\x{A7}/, $resp;
print "Msg of the Day: $motd\n"
. "Players Online: $players\n"
. "Max Players: $max_players\n";
printf "Ping Time: %5.3fs\n", $elapsed;
}
__END__
=head1 NAME
mcping - 'ping' a minecraft server
=head1 SYNOPSIS
mcping [options] host-or-ip:port
Options:
-? more detailed help message
=head1 DESCRIPTION
Attempts to connect to a minecraft server on the specified host:port. On
success, a brief report like this will be printed:
Msg of the Day: A Minecraft Server
Players Online: 2
Max Players: 10
Ping Time: 0.175s
If the :port is not specified, the default port number of 25565 will be used.
=head1 OPTIONS
=over 4
=item B<-?>
Display this documentation.
=back
=head1 AUTHOR & COPYRIGHT
This script was written by Grant McLean ( grant@mclean.net.nz ) as a Perl port
of a similar PHP script here: http://stackoverflow.com/questions/10055839/
This script may be freely used, copied and distributed under the same terms as
Perl itself.
=cut