#!/usr/bin/perl
#
# 2007-06-26
# Written by Ghost
#
# 2008-04-16
# Update: Wildcard version
#
# Requirements: "rcon" command written by [ASY]Zyrain
# [ http://trog.qgl.org/browse/docs/code/hl2rcon.c ]
#
# Configuration variables
#
#   srcdspass       - RCON password
#   srcdsrcon       - Path to rcon command (optional)
#   srcdsplayersmax - Maximum number of players (optional, default: 32)
#
# Magic markers - optional - used by installation scripts and
# munin-config:
#
#%# family=contrib
#%# capabilities=autoconf

use strict;

my ($HOST, $PORT) = $0 =~ m/.*_([^:]+)_(\d+)$/;
exit 1 if (!defined($HOST) || !defined($PORT));

my $PASS    = $ENV{srcdspass}       || "";
my $RCON    = $ENV{srcdsrcon}       || "/usr/local/bin/rcon";
my $MAX     = $ENV{srcdsplayersmax} || 32;
my $COMMAND = "$RCON -a$HOST -p$PORT -P$PASS stats";


my $arg = shift();

if ($arg eq 'config') {
    print_config();
    exit();
} elsif ($arg eq 'autoconf') {
    unless (test_service() ) {
        print "yes\n";
    } else {
        print "no\n";
    }
    exit;
}

my $statline;
open (SERVICE, "$COMMAND |")
    or die ("Could not execute '$COMMAND': $!");

while(<SERVICE>) {
    $statline = $_;
    next if ($statline !~ m/\s*[\w+\.]+\s+[\w+\.]+\s+[\w+\.]+\s+\d+\s+\d+\s+[\w+\.]+\s+\d+/);
    my ($cpu, $in, $out, $uptime, $users, $fps, $players) = ($statline =~ m/^\s*([\w+\.]+)\s+([\w+\.]+)\s+([\w+\.]+)\s+(\d+)\s+(\d+)\s+([\w+\.]+)\s+(\d+)/);

    if (defined($players)) {
	print "players.value $players\n";
    }
}


sub print_config {

    my $num = 0;

    print("graph_title Number of players at $HOST:$PORT\n",
	  "graph_args --base 1000\n",
	  "graph_vlabel Players\n",
	  "graph_category SourceDS\n",
	  "graph_info The number of players on Source game server, such as HL2, CS:S and DoD:S.\n");

    print ("players.label Players\n",
	   "players.min 0\n",
	   "players.max $MAX\n",
	   "players.type GAUGE\n");
}


sub test_service {

    my $return = 1;

    system ("$RCON >/dev/null 2>/dev/null");
    if ($? == 0)
    {
	system ("$COMMAND >/dev/null 2>/dev/null");
	if ($? == 0)
	{
	    print "yes\n";
	    $return = 0;
	}
	else
	{
	    print "no (could not connect to server $HOST:$PORT, verify address and srcdspass)\n";
	}
    }
    else
    {
	print "no (rcon command not found, see install instructions)\n";
    }
    exit $return;
}