gluon-web-remote

Web remote Administration for big size of gluon routers
git clone git://archive.git.mtrnord.blog/MTRNord/gluon-web-remote.git
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ImageFileHandler.php (2428B)

      1 <?php
      2 
      3 namespace Gregwar\Captcha;
      4 
      5 use Symfony\Component\Finder\Finder;
      6 
      7 /**
      8  * Handles actions related to captcha image files including saving and garbage collection
      9  *
     10  * @author Gregwar <g.passault@gmail.com>
     11  * @author Jeremy Livingston <jeremy@quizzle.com>
     12  */
     13 class ImageFileHandler
     14 {
     15     /**
     16      * Name of folder for captcha images
     17      * @var string
     18      */
     19     protected $imageFolder;
     20 
     21     /**
     22      * Absolute path to public web folder
     23      * @var string
     24      */
     25     protected $webPath;
     26 
     27     /**
     28      * Frequency of garbage collection in fractions of 1
     29      * @var int
     30      */
     31     protected $gcFreq;
     32 
     33     /**
     34      * Maximum age of images in minutes
     35      * @var int
     36      */
     37     protected $expiration;
     38 
     39     /**
     40      * @param $imageFolder
     41      * @param $webPath
     42      * @param $gcFreq
     43      * @param $expiration
     44      */
     45     public function __construct($imageFolder, $webPath, $gcFreq, $expiration)
     46     {
     47         $this->imageFolder      = $imageFolder;
     48         $this->webPath          = $webPath;
     49         $this->gcFreq           = $gcFreq;
     50         $this->expiration       = $expiration;
     51     }
     52 
     53     /**
     54      * Saves the provided image content as a file
     55      *
     56      * @param string $contents
     57      *
     58      * @return string
     59      */
     60     public function saveAsFile($contents)
     61     {
     62         $this->createFolderIfMissing();
     63 
     64         $filename = md5(uniqid()) . '.jpg';
     65         $filePath = $this->webPath . '/' . $this->imageFolder . '/' . $filename;
     66         imagejpeg($contents, $filePath, 15);
     67 
     68         return '/' . $this->imageFolder . '/' . $filename;
     69     }
     70 
     71     /**
     72      * Randomly runs garbage collection on the image directory
     73      *
     74      * @return bool
     75      */
     76     public function collectGarbage()
     77     {
     78         if (!mt_rand(1, $this->gcFreq) == 1) {
     79             return false;
     80         }
     81 
     82         $this->createFolderIfMissing();
     83 
     84         $finder = new Finder();
     85         $criteria = sprintf('<= now - %s minutes', $this->expiration);
     86         $finder->in($this->webPath . '/' . $this->imageFolder)
     87             ->date($criteria);
     88 
     89         foreach($finder->files() as $file) {
     90             unlink($file->getPathname());
     91         }
     92 
     93         return true;
     94     }
     95 
     96     /**
     97      * Creates the folder if it doesn't exist
     98      */
     99     protected function createFolderIfMissing()
    100     {
    101         if (!file_exists($this->webPath . '/' . $this->imageFolder)) {
    102             mkdir($this->webPath . '/' . $this->imageFolder, 0755);
    103         }
    104     }
    105 }
    106