#!/usr/bin/perl
# ====================================================================
# The Apache Software License, Version 1.1
#
# Copyright (c) 2000-2003 The Apache Software Foundation.  All rights
# reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
#
# 3. The end-user documentation included with the redistribution,
#    if any, must include the following acknowledgment:
#       "This product includes software developed by the
#        Apache Software Foundation (http://www.apache.org/)."
#    Alternately, this acknowledgment may appear in the software itself,
#    if and wherever such third-party acknowledgments normally appear.
#
# 4. The names "Apache" and "Apache Software Foundation" must
#    not be used to endorse or promote products derived from this
#    software without prior written permission. For written
#    permission, please contact apache@apache.org.
#
# 5. Products derived from this software may not be called "Apache",
#    nor may "Apache" appear in their name, without prior written
#    permission of the Apache Software Foundation.
#
# THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
# ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
# ====================================================================
#
# This software consists of voluntary contributions made by many
# individuals on behalf of the Apache Software Foundation.  For more
# information on the Apache Software Foundation, please see
# <http://www.apache.org/>.
#
# Log Server Status
# Mark J Cox, UK Web Ltd 1996, mark@ukweb.com
#
# This script is designed to be run at a frequent interval by something
# like cron.  It connects to the server and downloads the status
# information.  It reformats the information to a single line and logs
# it to a file.  Make sure the directory $wherelog is writable by the
# user who runs this script.
#
require 'sys/socket.ph';

$wherelog = "/var/log/graph/";  # Logs will be like "/var/log/graph/19960312"
$server = "localhost";          # Name of server, could be "www.foo.com"
$port = "80";                   # Port on server
$request = "/status/?auto";     # Request to send

sub tcp_connect
{
	local($host,$port) =@_;
        $sockaddr='S n a4 x8';
        chop($hostname=`hostname`);
        $port=(getservbyname($port, 'tcp'))[2]  unless $port =~ /^\d+$/;
        $me=pack($sockaddr,&AF_INET,0,(gethostbyname($hostname))[4]);
        $them=pack($sockaddr,&AF_INET,$port,(gethostbyname($host))[4]);
        socket(S,&PF_INET,&SOCK_STREAM,(getprotobyname('tcp'))[2]) || 
		die "socket: $!";
        bind(S,$me) || return "bind: $!";
        connect(S,$them) || return "connect: $!";
        select(S); 
	$| = 1; 
	select(stdout);
	return "";
}

### Main

{
        $year=`date +%y`;
	chomp($year);
	$year += ($year < 70) ? 2000 : 1900;
	$date = $year . `date +%m%d:%H%M%S`;
	chomp($date);
	($day,$time)=split(/:/,$date);
	$res=&tcp_connect($server,$port);
	open(OUT,">>$wherelog$day");
	if ($res) {
		print OUT "$time:-1:-1:-1:-1:$res\n";
		exit 1;
	}
	print S "GET $request\n";
	while (<S>) {
		$requests=$1 if ( m|^BusyServers:\ (\S+)|);
		$idle=$1 if ( m|^IdleServers:\ (\S+)|);
		$number=$1 if ( m|sses:\ (\S+)|);
		$cpu=$1 if (m|^CPULoad:\ (\S+)|);
	}
	print OUT "$time:$requests:$idle:$number:$cpu\n";
}