thumbs.php

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<?php
/***************************************************************
*  Copyright notice
*
*  (c) 1999-2004 Kasper Skaarhoj (kasperYYYY@typo3.com)
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project 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.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*  A copy is found in the textfile GPL.txt and important notices to the license
*  from the author is found in LICENSE.txt distributed with these scripts.
*
*
*  This script 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.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/
// *******************************
// Set error reporting
// *******************************
error_reporting (E_ALL ^ E_NOTICE);



// ******************
// Constants defined
// ******************
define('TYPO3_OS', stristr(PHP_OS,'win')&&!stristr(PHP_OS,'darwin')?'WIN':'');
define('TYPO3_MODE','BE');
define('PATH_thisScript',str_replace('//','/', str_replace('\\','/', (php_sapi_name()=='cgi'||php_sapi_name()=='isapi' ||php_sapi_name()=='cgi-fcgi')&&($_SERVER['ORIG_PATH_TRANSLATED']?$_SERVER['ORIG_PATH_TRANSLATED']:$_SERVER['PATH_TRANSLATED'])? ($_SERVER['ORIG_PATH_TRANSLATED']?$_SERVER['ORIG_PATH_TRANSLATED']:$_SERVER['PATH_TRANSLATED']):($_SERVER['ORIG_SCRIPT_FILENAME']?$_SERVER['ORIG_SCRIPT_FILENAME']:$_SERVER['SCRIPT_FILENAME']))));

define('PATH_site', ereg_replace('[^/]*.[^/]*$','',PATH_thisScript));      // the path to the website folder (see init.php)
define('PATH_typo3conf', PATH_site.'typo3conf/');
define('PATH_t3lib', PATH_site.'t3lib/');
define('TYPO3_mainDir', 'typo3/');     // This is the directory of the backend administration for the sites of this TYPO3 installation.

// ******************
// Including config
// ******************
require(PATH_t3lib.'class.t3lib_div.php');
require(PATH_t3lib.'class.t3lib_extmgm.php');

require(PATH_t3lib.'config_default.php');
if (!defined ('TYPO3_db'))    die ('The configuration file was not included.');
if (!$TYPO3_CONF_VARS['GFX']['image_processing'])  die ('ImageProcessing was disabled!');

require(PATH_t3lib.'class.t3lib_db.php');    // The database library
$TYPO3_DB = t3lib_div::makeInstance('t3lib_DB');
















class SC_t3lib_thumbs {
   var $include_once=array();

   var $outdir = 'typo3temp/';      // The output directory of temporary files in PATH_site
   var $output = '';
   var $sizeDefault='56x56';

   var $imageList;   // Coming from $TYPO3_CONF_VARS['GFX']['imagefile_ext']
   var $input;    // Contains the absolute path to the file for which to make a thumbnail (after init())

      // Internal, static: GPvar:
   var $file;     // Holds the input filename (GET: file)
   var $size;     // Holds the input size (GET: size)


   function init()   {
      global $TYPO3_CONF_VARS;

         // Setting GPvars:
      $this->file = t3lib_div::_GP('file');
      $this->size = t3lib_div::_GP('size');

         // Image extension list is set:
      $this->imageList = $TYPO3_CONF_VARS['GFX']['imagefile_ext'];         // valid extensions. OBS: No spaces in the list, all lowercase...

         // if the filereference $this->file is relative, we correct the path
      if (substr($this->file,0,3)=='../') {
         $this->input = PATH_site.ereg_replace('^\.\./','',$this->file);
      } else {
         $this->input = $this->file;
      }

         // Now the path is absolute.
         // Checking for backpath and double slashes + the thumbnail can be made from files which are in the PATH_site OR the lockRootPath only!
      if (!t3lib_div::isAllowedAbsPath($this->input)) {
         $this->input='';
      }
   }

   function main()   {
      global $TYPO3_CONF_VARS;

         // If file exists, we make a thumbsnail of the file.
      if ($this->input && @file_exists($this->input)) {

            // Check file extension:
         if (ereg('(.*)\.([^\.]*$)',$this->input,$reg))  {
            $ext=strtolower($reg[2]);
            $ext=($ext=='jpeg')?'jpg':$ext;
            if ($ext=='ttf')  {
               $this->fontGif($this->input); // Make font preview... (will not return)
            } elseif (!t3lib_div::inList($this->imageList, $ext)) {
               $this->errorGif('Not imagefile!',$ext,$this->input);
            }
         } else {
            $this->errorGif('Not imagefile!','No ext!',$this->input);
         }

            // ... so we passed the extension test meaning that we are going to make a thumbnail here:
         $this->size = $this->size ? $this->size : $this->sizeDefault;  // default

            //I added extra check, so that the size input option could not be fooled to pass other values. That means the value is exploded, evaluated to an integer and the imploded to [value]x[value]. Furthermore you can specify: size=340 and it'll be translated to 340x340.
         $sizeParts = explode('x', $this->size.'x'.$this->size);  // explodes the input size (and if no "x" is found this will add size again so it is the same for both dimensions)
         $sizeParts = array(t3lib_div::intInRange($sizeParts[0],1,1000),t3lib_div::intInRange($sizeParts[1],1,1000));   // Cleaning it up, only two parameters now.
         $this->size = implode('x',$sizeParts);    // Imploding the cleaned size-value back to the internal variable
         $sizeMax = max($sizeParts);   // Getting max value

            // Init
         $mtime = filemtime($this->input);
         $outpath = PATH_site.$this->outdir;

            // Should be - ? 'png' : 'gif' - , but doesn't work (ImageMagick prob.?)
            // René: png work for me
         $thmMode = t3lib_div::intInRange($TYPO3_CONF_VARS['GFX']['thumbnails_png'],0);
         $outext = ($ext!='jpg' || ($thmMode & 2)) ? ($thmMode & 1 ? 'png' : 'gif') : 'jpg';

         $outfile = 'tmb_'.substr(md5($this->input.$mtime.$this->size),0,10).'.'.$outext;
         $this->output = $outpath.$outfile;

         if ($TYPO3_CONF_VARS['GFX']['im'])  {
               // If thumbnail does not exist, we generate it
            if (!@file_exists($this->output))   {
/*             if (strstr($this->input,' ') || strstr($this->output,' '))  {
                  $this->errorGif('Spaces in','filepath',$this->input);
               }
*/                // 16 colors for small (56) thumbs, 64 for bigger and all for jpegs
               if ($outext=='jpg')  {
                  $colors = '';
               } else {
                  $colors = ($sizeMax>56)?'-colors 64':'-colors 16';
               }
               $cmd = ($TYPO3_CONF_VARS['GFX']['im_path_lzw'] ? $TYPO3_CONF_VARS['GFX']['im_path_lzw'] : $TYPO3_CONF_VARS['GFX']['im_path']).
                        'convert -sample '.$this->size.' '.$colors.' '.$this->wrapFileName($this->input.'[0]').' '.$this->wrapFileName($this->output);

      //       echo $cmd;
               exec($cmd);
               if (!@file_exists($this->output))   {
                  $this->errorGif('No thumb','generated!',$this->input);
               }
            }
               // The thumbnail is read and output to the browser
            if($fd = @fopen($this->output,'rb'))   {
               Header('Content-type: image/'.$outext);
               while (!feof($fd))   {
                  echo fread( $fd, 10000 );
               }
               fclose( $fd );
            } else {
               $this->errorGif('Read problem!','',$this->output);
            }
         } else exit;
      } else {
         $this->errorGif('No valid','inputfile!',$this->input);
      }
   }











   /***************************
    *
    * OTHER FUNCTIONS:
    *
    ***************************/

   function errorGif($l1,$l2,$l3)   {
      global $TYPO3_CONF_VARS;

      if (!$TYPO3_CONF_VARS['GFX']['gdlib']) die($l1.' '.$l2.' '.$l3);

         // Creates the basis for the error image
      if ($TYPO3_CONF_VARS['GFX']['gdlib_png']) {
         Header('Content-type: image/png');
         $im = imagecreatefrompng(PATH_t3lib.'gfx/notfound_thumb.png');
      } else {
         Header('Content-type: image/gif');
         $im = imagecreatefromgif(PATH_t3lib.'gfx/notfound_thumb.gif');
      }
         // Sets background color and print color.
       $white = ImageColorAllocate($im, 0,0,0);
       $black = ImageColorAllocate($im, 255,255,0);

         // Prints the text strings with the build-in font functions of GD
      $x=0;
      $font=0;
      if ($l1) {
         imagefilledrectangle($im, $x, 9, 56, 16, $black);
         ImageString($im,$font,$x,9,$l1,$white);
      }
      if ($l2) {
         imagefilledrectangle($im, $x, 19, 56, 26, $black);
         ImageString($im,$font,$x,19,$l2,$white);
      }
      if ($l3) {
         imagefilledrectangle($im, $x, 29, 56, 36, $black);
         ImageString($im,$font,$x,29,substr($l3,-14),$white);
      }

         // Outputting the image stream and exit
      if ($TYPO3_CONF_VARS['GFX']['gdlib_png']) {
         imagePng($im);
      } else {
         imageGif($im);
      }
      imagedestroy($im);
      exit;
   }

   function fontGif($font) {
      global $TYPO3_CONF_VARS;

      if (!$TYPO3_CONF_VARS['GFX']['gdlib']) die('');

         // Create image and set background color to white.
      $im = ImageCreate(250,76);
       $white = ImageColorAllocate($im, 255,255,255);
       $col = ImageColorAllocate($im, 0,0,0);

         // The test string and offset in x-axis.
      $string = 'AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZzÆæØøÅåÄäÖöÜüß';
      $x=13;

         // Print (with non-ttf font) the size displayed
      imagestring ($im, 1, 0, 2, '10', $col);
      imagestring ($im, 1, 0, 15, '12', $col);
      imagestring ($im, 1, 0, 30, '14', $col);
      imagestring ($im, 1, 0, 47, '18', $col);
      imagestring ($im, 1, 0, 68, '24', $col);

         // Print with ttf-font the test string
      imagettftext ($im, t3lib_div::freetypeDpiComp(10), 0, $x, 8, $col, $font, $string);
      imagettftext ($im, t3lib_div::freetypeDpiComp(12), 0, $x, 21, $col, $font, $string);
      imagettftext ($im, t3lib_div::freetypeDpiComp(14), 0, $x, 36, $col, $font, $string);
      imagettftext ($im, t3lib_div::freetypeDpiComp(18), 0, $x, 53, $col, $font, $string);
      imagettftext ($im, t3lib_div::freetypeDpiComp(24), 0, $x, 74, $col, $font, $string);

         // Output PNG or GIF based on $TYPO3_CONF_VARS['GFX']['gdlib_png']
      if ($TYPO3_CONF_VARS['GFX']['gdlib_png']) {
         Header('Content-type: image/png');
         imagePng($im);
      } else {
         Header('Content-type: image/gif');
         imageGif($im);
      }
      imagedestroy($im);
      exit;
   }

   function wrapFileName($inputName)   {
      if (strstr($inputName,' '))   {
         $inputName='"'.$inputName.'"';
      }
      return $inputName;
   }
}

// Include extension class?
if (defined('TYPO3_MODE') && $TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['t3lib/thumbs.php'])  {
   include_once($TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['t3lib/thumbs.php']);
}




// Make instance:
$SOBE = t3lib_div::makeInstance('SC_t3lib_thumbs');
$SOBE->init();
$SOBE->main();
?>

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