1<?php
2
3/**
4 * Validates ftp (File Transfer Protocol) URIs as defined by generic RFC 1738.
5 */
6class 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
59