librenms/html/includes/graphs/graph.inc.php

<?php

include_once("Net/IPv4.php");

if (isset($_GET['debug']))
{
  $debug = TRUE;
  ini_set('display_errors', 1);
  ini_set('display_startup_errors', 0);
  ini_set('log_errors', 0);
  ini_set('error_reporting', E_ALL);
}
else
{
  $debug = FALSE;
  ini_set('display_errors', 0);
  ini_set('display_startup_errors', 0);
  ini_set('log_errors', 0);
  ini_set('error_reporting', 0);
}

include("../includes/defaults.inc.php");
include("../config.php");
include("../includes/common.php");
include("../includes/rewrites.php");
include("includes/functions.inc.php");
include("includes/authenticate.inc.php");

$from     = mres($_GET['from']);
$to       = mres($_GET['to']);
$width    = mres($_GET['width']);
$height   = mres($_GET['height']);
$title    = mres($_GET['title']);
$vertical = mres($_GET['vertical']);
$legend   = mres($_GET['legend']);
$id       = mres($_GET['id']);

if (!$config['allow_unauth_graphs'])
{
  if (!$_SESSION['authenticated']) { graph_error("Not authenticated"); exit; }
}

preg_match('/^(?P<type>[A-Za-z0-9]+)_(?P<subtype>.+)/', mres($_GET['type']), $graphtype);

$type = $graphtype['type'];
$subtype = $graphtype['subtype'];

if ($debug) {print_r($graphtype); }

$graphfile = $config['temp_dir'] . "/"  . strgen() . ".png";

if (is_file($config['install_dir'] . "/html/includes/graphs/$type/$subtype.inc.php"))
{
  if (isset($config['allow_unauth_graphs_cidr']) && count($config['allow_unauth_graphs_cidr']) > 0)
  {
    foreach ($config['allow_unauth_graphs_cidr'] as $range)
    {
      if (Net_IPv4::ipInNetwork($_SERVER['REMOTE_ADDR'], $range))
      {
        $auth = TRUE;
        break;
      }
    }
  }

  include($config['install_dir'] . "/html/includes/graphs/$type/auth.inc.php");

  if ($auth)
  {
    include($config['install_dir'] . "/html/includes/graphs/$type/$subtype.inc.php");
  }
}
else
{
  graph_error("Graph Template Missing");
}

function graph_error($string)
{
  global $width, $height, $debug;

  if (!$debug) { header('Content-type: image/png'); }
  if ($height > "99")  { $width +=75; }
  $im     = imagecreate($width, $height);
  $orange = imagecolorallocate($im, 255, 225, 225);
  $px     = (imagesx($im) - 7.5 * strlen($string)) / 2;
  imagestring($im, 3, $px, $height / 2 - 8, $string, imagecolorallocate($im, 128, 0, 0));
  imagepng($im);
  imagedestroy($im);
  exit();
}

if (!$auth)
{
  if ($width < 200)
  {
   graph_error("No Auth");
  } else {
   graph_error("No Authorisation");
  }
} else {
  #$rrd_options .= " HRULE:0#999999";
  if ($no_file)
  {
    if ($width < 200)
    {
      graph_error("No RRD");
    } else {
      graph_error("Missing RRD Datafile");
    }
  } else {
    if ($rrd_options)
    {
      if ($config['rrdcached']) { $rrd_switches = " --daemon ".$config['rrdcached'] . " "; }
      $rrd_cmd = $config['rrdtool'] . " graph $graphfile $rrd_options" . $rrd_switches;
      $woo = shell_exec($rrd_cmd);
      if ($debug) { echo("<pre>".$rrd_cmd."</pre>"); }
      if (is_file($graphfile) && !$debug)
      {
        header('Content-type: image/png');
        $fd = fopen($graphfile,'r');fpassthru($fd);fclose($fd);
        unlink($graphfile);
      }
      else
      {
        if ($width < 200)
        {
          graph_error("Draw Error");
        }
        else
        {
          graph_error("Error Drawing Graph");
        }
      }
    }
    else
    {
      if ($width < 200)
      {
        graph_error("Def Error");
      } else {
        graph_error("Graph Definition Error");
      }
    }
  }
}

?>