library/HTMLPurifier/URIScheme/ftp.php

   1 <?php
   2
   3 require_once 'HTMLPurifier/URIScheme.php';
   4
   5 /**
   6  * Validates ftp (File Transfer Protocol) URIs as defined by generic RFC 1738.
   7  */
   8 class HTMLPurifier_URIScheme_ftp extends HTMLPurifier_URIScheme {
   9
  10     var $default_port = 21;
  11     var $browsable = true; // usually
  12
  13     function validateComponents(
  14         $userinfo, $host, $port, $path, $query, $config, &$context
  15     ) {
  16         list($userinfo, $host, $port, $path, $query) =
  17             parent::validateComponents(
  18                 $userinfo, $host, $port, $path, $query, $config, $context );
  19         $semicolon_pos = strrpos($path, ';'); // reverse
  20         if ($semicolon_pos !== false) {
  21             // typecode check
  22             $type = substr($path, $semicolon_pos + 1); // no semicolon
  23             $path = substr($path, 0, $semicolon_pos);
  24             $type_ret = '';
  25             if (strpos($type, '=') !== false) {
  26                 // figure out whether or not the declaration is correct
  27                 list($key, $typecode) = explode('=', $type, 2);
  28                 if ($key !== 'type') {
  29                     // invalid key, tack it back on encoded
  30                     $path .= '%3B' . $type;
  31                 } elseif ($typecode === 'a' || $typecode === 'i' || $typecode === 'd') {
  32                     $type_ret = ";type=$typecode";
  33                 }
  34             } else {
  35                 $path .= '%3B' . $type;
  36             }
  37             $path = str_replace(';', '%3B', $path);
  38             $path .= $type_ret;
  39         }
  40         return array($userinfo, $host, $port, $path, null);
  41     }
  42
  43 }
  44