#!/usr/bin/perl -wT
# (c) 2003 by Peter Palfrader
#
# mrtg memory and swap usage check
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

# run as suid because grsec limits ps

use strict;
use English;

$ENV{'PATH'} = '/bin:/usr/bin';
delete @ENV{'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};

open(FOO, "/bin/ps ax|") || die "$0: can't fork ps $!";
my @processes = <FOO>;
close FOO;

shift @processes;
my $running=0;

for my $line (@processes) {
	my @line = split /\s+/, $line;
	$running++ if ($line[2] =~ /R/);
}

my $uptime=`/usr/bin/uptime`;
my $hostname=`/bin/hostname`;
printf "%d\n%d\n%s%s", scalar @processes, $running, $uptime, $hostname;