common_functions.php

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<?php 

// phpSysInfo - A PHP System Information Script
// http://phpsysinfo.sourceforge.net/

// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

// $Id: common_functions.php,v 1.1 2005/04/15 21:23:31 mschering Exp $
// HTML/XML Comment
function created_by () {
  global $VERSION;
  return "<!--\n\tCreated By: phpSysInfo - $VERSION\n\thttp://phpsysinfo.sourceforge.net/\n-->\n\n";
} 
// So that stupid warnings do not appear when we stats files that do not exist.
error_reporting(5);
// print out the bar graph
function create_bargraph ($percent, $a, $b, $type = "") {
  if ($percent == 0) {
    return '<img height="' . BAR_HEIGHT . '" src="templates/' . TEMPLATE_SET . '/images/bar_left.gif" alt="">' . '<img src="templates/' . TEMPLATE_SET . '/images/bar_middle.gif" height="' . BAR_HEIGHT . '" width="1" alt="">' . '<img src="templates/' . TEMPLATE_SET . '/images/bar_right.gif" height="' . BAR_HEIGHT . '" alt="">';
  } else if (($percent < 90) || ($type == "iso9660")) {
    return '<img height="' . BAR_HEIGHT . '" src="templates/' . TEMPLATE_SET . '/images/bar_left.gif" alt="">' . '<img src="templates/' . TEMPLATE_SET . '/images/bar_middle.gif" height="' . BAR_HEIGHT . '" width="' . ($a * $b) . '" alt="">' . '<img height="' . BAR_HEIGHT . '" src="templates/' . TEMPLATE_SET . '/images/bar_right.gif" alt="">';
  } else {
    return '<img height="' . BAR_HEIGHT . '" src="templates/' . TEMPLATE_SET . '/images/redbar_left.gif" alt="">' . '<img src="templates/' . TEMPLATE_SET . '/images/redbar_middle.gif" height="' . BAR_HEIGHT . '" width="' . ($a * $b) . '" alt="">' . '<img height="' . BAR_HEIGHT . '" src="templates/' . TEMPLATE_SET . '/images/redbar_right.gif" alt="">';
  } 
} 
// Find a system program.  Do path checking
function find_program ($program) {
  $path = array('/bin', '/sbin', '/usr/bin', '/usr/sbin', '/usr/local/bin', '/usr/local/sbin');

  if (function_exists("is_executable")) {
    while ($this_path = current($path)) {
      if (is_executable("$this_path/$program")) {
        return "$this_path/$program";
      } 
      next($path);
    }
  }
  else {
    return strpos($program, '.exe');
  };

  return;
} 

// Execute a system program. return a trim()'d result.
// does very crude pipe checking.  you need ' | ' for it to work
// ie $program = execute_program('netstat', '-anp | grep LIST');
// NOT $program = execute_program('netstat', '-anp|grep LIST');
function execute_program ($program, $args = '') {
  $buffer = '';
  $program = find_program($program);

  if (!$program) {
    return;
  } 
  // see if we've gotten a |, if we have we need to do patch checking on the cmd
  if ($args) {
    $args_list = split(' ', $args);
    for ($i = 0; $i < count($args_list); $i++) {
      if ($args_list[$i] == '|') {
        $cmd = $args_list[$i + 1];
        $new_cmd = find_program($cmd);
        $args = ereg_replace("\| $cmd", "| $new_cmd", $args);
      } 
    } 
  } 
  // we've finally got a good cmd line.. execute it
  if ($fp = popen("$program $args", 'r')) {
    while (!feof($fp)) {
      $buffer .= fgets($fp, 4096);
    } 
    return trim($buffer);
  } 
} 
// A helper function, when passed a number representing KB,
// and optionally the number of decimal places required,
// it returns a formated number string, with unit identifier.
function format_bytesize ($kbytes, $dec_places = 2) {
  global $text;
  $spacer = ' ';
  if ($kbytes > 1048576) {
    $result = sprintf('%.' . $dec_places . 'f', $kbytes / 1048576);
    $result .= $spacer . $text['gb'];
  } elseif ($kbytes > 1024) {
    $result = sprintf('%.' . $dec_places . 'f', $kbytes / 1024);
    $result .= $spacer . $text['mb'];
  } else {
    $result = sprintf('%.' . $dec_places . 'f', $kbytes);
    $result .= $spacer . $text['kb'];
  } 
  return $result;
}