progress.php

<?php

/*
  This code is part of FusionDirectory (http://www.fusiondirectory.org/)
  Copyright (C) 2003-2010  Cajus Pollmeier
  Copyright (C) 2011-2016  FusionDirectory

  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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/

session_cache_limiter("private");

/* Check for parameter completenes */
if (!isset($_GET['x']) || !isset($_GET['y']) || !isset($_GET['p'])) {
  die("Missing parameters!");
}
if (!is_numeric($_GET['x']) || !is_numeric($_GET['y'])) {
  die("Parameters must be numeric!");
}

$p = (int)($_GET['p']);
$x = (int)($_GET['x']);
$y = (int)($_GET['y']);

/* Check percentage */
if ($p < 0) {
  $p = 0;
} elseif ($p > 100) {
  $p = 100;
}
$p = intval($p);

/* Check dimensions */
if ($x < 3 || $x > 1000) {
  $x = 180;
}
if ($y < 3 || $y > 700) {
  $y = 20;
}

if (!function_exists("imagecreate")) {
  syslog(LOG_ERR, "FusionDirectory is missing the gd library, please install php5-gd to be able to see progress images.");
  echo "Please install the php5-gd library, FusionDirectory can't create images without it.";
  exit();
} else {
  $x_matches = FALSE;
  $y_matches = FALSE;
  foreach ([7,6,5,4,3,2,1,0] as $font) {
    $fx = ImageFontWidth($font) * strlen("$p%");
    $fy = ImageFontHeight($font);

    /* Look if font size matches image size */
    if ($fx < ($x - 2)) {
      $x_matches = TRUE;
    }
    if ($fy < ($y - 2)) {
      $y_matches = TRUE;
    }