Munin contributed plugins

#!/usr/bin/perl

#

# 2007-06-26

# Written by Ghost

#

# 2008-04-16

# Update: Wildcard version

#

# 2008-11-12

# Update: Perl RCON system

#

# Configuration variables

#

#   srcdspass       - RCON password

#   srcdsplayersmax - Maximum number of players (optional, default: 32)

#

# Magic markers - optional - used by installation scripts and

# munin-config:

#

#%# family=contrib

#%# capabilities=autoconf

use strict;

# Set library path correctly

use File::Basename;

if (-l $0) {

    push(@INC, dirname(readlink($0)));

}

push(@INC, dirname($0));

# Load Rcon module or exit with failuer message

if (!eval "require Rcon") {

    print "Failed to load Rcon module. ";

    print "Make sure Rcon.pm is copied to Munin plugins directory.\n";

    exit 1;

}

# Parse hostname and port from the plugin filename

my ($HOST, $PORT) = $0 =~ m/.*_([^:]+)_(\d+)$/;

if (!defined($HOST) || !defined($PORT)) {

    print "Could not parse server address from filename.\n";

    exit 1;

}

# Load config variables or use default values

my $PASS    = $ENV{srcdspass}       || "";

my $MAX     = $ENV{srcdsplayersmax} || 32;

# Print config or do plugin test if asked

my $arg = shift();

if ($arg eq 'config') {

    print_config();

} elsif ($arg eq 'autoconf') {

    test_service();

}

#

# Main program starts here

#

my $sock = Rcon::sock_connect($HOST, $PORT);

if (!$sock) {

    print "Could not open socket to $HOST:$PORT.\n";

    exit 1;

}

if (!Rcon::rcon_auth($sock, $PASS)) {

    print "Could not authenticate.\n";

    exit 1;

}

my $reply = Rcon::rcon_command($sock, "stats");

if (!defined($reply)) {

    print "Did not receive reply from server.\n";

    exit 1;

}

my @reply = split(/\n/, $reply);

foreach my $statline (@reply) {

    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 {

    print("graph_title Number of players at $HOST:$PORT\n",

	  "graph_args --base 1000\n",

	  "graph_vlabel Players\n",

	  "graph_category games\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 $sock = Rcon::sock_connect($HOST, $PORT);

    if (!$sock) {

	print "no (could not open socket to $HOST:$PORT)\n";

	exit 1;

    }

    if (!Rcon::rcon_auth($sock, $PASS)) {

	print "no (could not authenticate)\n";

	exit 1;

    }

    if (!defined(Rcon::rcon_command($sock, "stats"))) {

	print "no (did not receive reply from server)\n";

	exit 1;

    }

    print "yes\n";

    exit 0;

}