<?php

/**
 * Original Template by ApacheStats 0.8.2 by RCK - http://forums.cacti.net/about25227.html
 * Tested and packaged for Cacti 1.2.x  by Sean Mancini - bmfmancini - www.seanmancini.com
 */

if (!isset($called_by_script_server)) {
	include_once(__DIR__ . '/../include/cli_check.php');
	include_once(__DIR__ . '/../lib/snmp.php');

	array_shift($_SERVER['argv']);

	print call_user_func_array('ss_apache_stats', $_SERVER['argv']);
}

function ss_apache_stats(string $host = '', string $section = 'all') : mixed {
	// perform initial error checking
	if (empty($host)) {
		cacti_log('ERROR: ApacheStats08 - Host parameter missing, can not continue');
	}

	$variables = ['apache_total_hits', 'apache_total_kbytes', 'apache_busy_workers', 'apache_idle_workers', 'apache_cpuload'];
	$threads   = ['_W' => 0, 'S' => 0, 'R'=>0, 'W'=>0, 'K'=>0, 'D'=>0, 'C'=>0, 'L'=>0, 'G'=>0, 'I'=>0, '_O'=>0];
	/*	***Types of Threads***
		_W --- waiting
		S  --- starting up
		R  --- reading request
		W  --- sending reply
		K  --- keepalive
		D  --- DNS lookup
		C  --- closing connection
		L  --- logging
		G  --- graceful finishing
		I  --- idle cleanup
		_O --- open slot
	*/
	$url          = "http://$host/server-status?auto";
	$result       = file_get_contents($url);
	$array_result = [];
	$array_result =  explode("\n",(string) $result);
	$i            = 0;
	$output       = '';
	$line         = [];

	foreach ($array_result as $newline) {
		$line = explode(':', $newline);

		switch ($line[0]) {
			case 'Total Accesses':
				if (($section == 'hits') || ($section == 'all')) {
					$output .= $variables[0] . ':' . trim($line[1]) . ' ';
				}

				break;
			case 'Total kBytes':
				if (($section == 'kbytes') || ($section == 'all')) {
					$output .= $variables[1] . ':' . trim($line[1]) . ' ';
				}

				break;
			case 'BusyServers':
			case 'BusyWorkers':
				if (($section == 'workers') || ($section == 'all')) {
					$output .= $variables[2] . ':' . trim($line[1]) . ' ';
				}

				break;
			case 'IdleServers':
			case 'IdleWorkers':
				if (($section == 'workers') || ($section == 'all')) {
					$output .= $variables[3] . ':' . trim($line[1]) . ' ';
				}

				break;
			case 'CPULoad':
				if (($section == 'cpuload') || ($section == 'all')) {
					$output .= $variables[4] . ':' . trim($line[1]) . ' ';
				}

				break;
			case 'Scoreboard':
				$string = trim($line[1]);
				$length = strlen($string);

				for ($j = 0; $j < $length; $j++) {
					$char = $string[$j];

					if ($char == '_') {
						$threads['_W']++;
					} elseif ($char == '.') {
						$threads['_O']++;
					} else {
						$threads[$char]++;
					}
				}

				break;
		}
	}

	if (($section == 'threads') || ($section == 'all')) {
		foreach ($threads as $type => $num_threads) {
			$output .= 'thread' . $type . ':' . $num_threads . ' ';
		}
	}

	return trim(str_replace(["\r", "\n"],'', $output));
}