#!/usr/bin/perl
##########################################################
# mrtg-apache.pl 
#
# Get the current number of serviced requests from Apache via 
# the /server-status URL
# Also the number of active child processes
##########################################################
use LWP::UserAgent;

my($SERVER) = "localhost";

sub getpage {
	my($ua, $request, $response);

	$ua = new LWP::UserAgent;
	$request = new HTTP::Request('GET',"http://$SERVER/server-status");
	$request->header(Expires=> "Mon, 26 Jul 1997 05:00:00 GMT");
	$response = $ua->request($request);

	if($response->code == 200) {
		my($page) = $response->content;
		return $page;
	} else {
		return 0;
	}
}

sub getcount {
	my($p);
	$p = getpage;
	if( !$p ) { return 0; }
	if( $p =~ /Total accesses:\s*(\d+)/i ) { return $1; }
	return 0;
}

sub getprocs {
	my(@rv) = (-1,-1);
	my($p);
	$p = getpage;
	if( !$p ) { return (-1,-1); }
	if( $p =~ /(\d+)\s*requests? current.*?(\d+)\s*idle/i ) { 
		@rv = ( ($1+$2), $1 );
		return @rv; 
	}
	return (-2,-2);
}

if( $ARGV[0] eq '-p' ) {
	$SERVER = $ARGV[1] if($ARGV[1]);
	my($tota,$totb) = getprocs;
	if($tota >= 0 ) {
		print "$tota\n$totb\n";
	} else {
		print "UNKNOWN\nUNKNOWN\n";
	}
} else {
	$SERVER = $ARGV[0] if($ARGV[0]);
	my($tot) = getcount;
	if( $tot ) {
		print "$tot\n";
	} else {
		print "UNKNOWN\n";
	}
	print "0\n";
}
print "(Cannot check)\n";
print "Apache server on $SERVER\n";

exit(0);