| commit | author | age | ||
| 0c2596 | 1 | <?php |
| A | 2 | |
| 3 | /* | |
| 4 | +-----------------------------------------------------------------------+ | |
| 5 | | program/include/rcube_base_replacer.php | | |
| 6 | | | | |
| 7 | | This file is part of the Roundcube Webmail client | | |
| 8 | | Copyright (C) 2005-2012, The Roundcube Dev Team | | |
| 9 | | | | |
| 10 | | Licensed under the GNU General Public License version 3 or | | |
| 11 | | any later version with exceptions for skins & plugins. | | |
| 12 | | See the README file for a full license statement. | | |
| 13 | | | | |
| 14 | | PURPOSE: | | |
| 15 | | Provide basic functions for base URL replacement | | |
| 16 | | | | |
| 17 | +-----------------------------------------------------------------------+ | |
| 18 | | Author: Thomas Bruederli <roundcube@gmail.com> | | |
| 19 | +-----------------------------------------------------------------------+ | |
| 20 | ||
| 21 | $Id$ | |
| 22 | ||
| 23 | */ | |
| 24 | ||
| 25 | /** | |
| 26 | * Helper class to turn relative urls into absolute ones | |
| 27 | * using a predefined base | |
| 28 | * | |
| 29 | * @package Core | |
| 30 | * @author Thomas Bruederli <roundcube@gmail.com> | |
| 31 | */ | |
| 32 | class rcube_base_replacer | |
| 33 | { | |
| 34 | private $base_url; | |
| 35 | ||
| 36 | ||
| 37 | public function __construct($base) | |
| 38 | { | |
| 39 | $this->base_url = $base; | |
| 40 | } | |
| 41 | ||
| 42 | ||
| 43 | public function callback($matches) | |
| 44 | { | |
| 45 | return $matches[1] . '="' . self::absolute_url($matches[3], $this->base_url) . '"'; | |
| 46 | } | |
| 47 | ||
| 48 | ||
| 49 | public function replace($body) | |
| 50 | { | |
| 51 | return preg_replace_callback(array( | |
| 52 | '/(src|background|href)=(["\']?)([^"\'\s]+)(\2|\s|>)/Ui', | |
| 53 | '/(url\s*\()(["\']?)([^"\'\)\s]+)(\2)\)/Ui', | |
| 54 | ), | |
| 55 | array($this, 'callback'), $body); | |
| 56 | } | |
| 57 | ||
| 58 | ||
| 59 | /** | |
| 60 | * Convert paths like ../xxx to an absolute path using a base url | |
| 61 | * | |
| 62 | * @param string $path Relative path | |
| 63 | * @param string $base_url Base URL | |
| 64 | * | |
| 65 | * @return string Absolute URL | |
| 66 | */ | |
| 67 | public static function absolute_url($path, $base_url) | |
| 68 | { | |
| 69 | $host_url = $base_url; | |
| 70 | $abs_path = $path; | |
| 71 | ||
| 72 | // check if path is an absolute URL | |
| 73 | if (preg_match('/^[fhtps]+:\/\//', $path)) { | |
| 74 | return $path; | |
| 75 | } | |
| 76 | ||
| 77 | // check if path is a content-id scheme | |
| 78 | if (strpos($path, 'cid:') === 0) { | |
| 79 | return $path; | |
| 80 | } | |
| 81 | ||
| 82 | // cut base_url to the last directory | |
| 83 | if (strrpos($base_url, '/') > 7) { | |
| 84 | $host_url = substr($base_url, 0, strpos($base_url, '/', 7)); | |
| 85 | $base_url = substr($base_url, 0, strrpos($base_url, '/')); | |
| 86 | } | |
| 87 | ||
| 88 | // $path is absolute | |
| 89 | if ($path[0] == '/') { | |
| 90 | $abs_path = $host_url.$path; | |
| 91 | } | |
| 92 | else { | |
| 93 | // strip './' because its the same as '' | |
| 94 | $path = preg_replace('/^\.\//', '', $path); | |
| 95 | ||
| 96 | if (preg_match_all('/\.\.\//', $path, $matches, PREG_SET_ORDER)) { | |
| 97 | foreach ($matches as $a_match) { | |
| 98 | if (strrpos($base_url, '/')) { | |
| 99 | $base_url = substr($base_url, 0, strrpos($base_url, '/')); | |
| 100 | } | |
| 101 | $path = substr($path, 3); | |
| 102 | } | |
| 103 | } | |
| 104 | ||
| 105 | $abs_path = $base_url.'/'.$path; | |
| 106 | } | |
| 107 | ||
| 108 | return $abs_path; | |
| 109 | } | |
| 110 | } | |
