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   1  <?php
   2  
   3  /**
   4   * Validates ftp (File Transfer Protocol) URIs as defined by generic RFC 1738.
   5   */
   6  class HTMLPurifier_URIScheme_ftp extends HTMLPurifier_URIScheme
   7  {
   8      /**
   9       * @type int
  10       */
  11      public $default_port = 21;
  12  
  13      /**
  14       * @type bool
  15       */
  16      public $browsable = true; // usually
  17  
  18      /**
  19       * @type bool
  20       */
  21      public $hierarchical = true;
  22  
  23      /**
  24       * @param HTMLPurifier_URI $uri
  25       * @param HTMLPurifier_Config $config
  26       * @param HTMLPurifier_Context $context
  27       * @return bool
  28       */
  29      public function doValidate(&$uri, $config, $context)
  30      {
  31          $uri->query = null;
  32  
  33          // typecode check
  34          $semicolon_pos = strrpos($uri->path, ';'); // reverse
  35          if ($semicolon_pos !== false) {
  36              $type = substr($uri->path, $semicolon_pos + 1); // no semicolon
  37              $uri->path = substr($uri->path, 0, $semicolon_pos);
  38              $type_ret = '';
  39              if (strpos($type, '=') !== false) {
  40                  // figure out whether or not the declaration is correct
  41                  list($key, $typecode) = explode('=', $type, 2);
  42                  if ($key !== 'type') {
  43                      // invalid key, tack it back on encoded
  44                      $uri->path .= '%3B' . $type;
  45                  } elseif ($typecode === 'a' || $typecode === 'i' || $typecode === 'd') {
  46                      $type_ret = ";type=$typecode";
  47                  }
  48              } else {
  49                  $uri->path .= '%3B' . $type;
  50              }
  51              $uri->path = str_replace(';', '%3B', $uri->path);
  52              $uri->path .= $type_ret;
  53          }
  54          return true;
  55      }
  56  }
  57  
  58  // vim: et sw=4 sts=4