| 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 | ||
| 22 | /** | |
| 23 | * Helper class to turn relative urls into absolute ones | |
| 24 | * using a predefined base | |
| 25 | * | |
| 9ab346 | 26 | * @package Framework |
| AM | 27 | * @subpackage Core |
| 28 | * @author Thomas Bruederli <roundcube@gmail.com> | |
| 0c2596 | 29 | */ |
| A | 30 | class rcube_base_replacer |
| 31 | { | |
| 32 | private $base_url; | |
| 33 | ||
| 34 | ||
| 35 | public function __construct($base) | |
| 36 | { | |
| 37 | $this->base_url = $base; | |
| 38 | } | |
| 39 | ||
| 40 | ||
| 41 | public function callback($matches) | |
| 42 | { | |
| 43 | return $matches[1] . '="' . self::absolute_url($matches[3], $this->base_url) . '"'; | |
| 44 | } | |
| 45 | ||
| 46 | ||
| 47 | public function replace($body) | |
| 48 | { | |
| 49 | return preg_replace_callback(array( | |
| 50 | '/(src|background|href)=(["\']?)([^"\'\s]+)(\2|\s|>)/Ui', | |
| 51 | '/(url\s*\()(["\']?)([^"\'\)\s]+)(\2)\)/Ui', | |
| 52 | ), | |
| 53 | array($this, 'callback'), $body); | |
| 54 | } | |
| 55 | ||
| 56 | ||
| 57 | /** | |
| 58 | * Convert paths like ../xxx to an absolute path using a base url | |
| 59 | * | |
| 60 | * @param string $path Relative path | |
| 61 | * @param string $base_url Base URL | |
| 62 | * | |
| 63 | * @return string Absolute URL | |
| 64 | */ | |
| 65 | public static function absolute_url($path, $base_url) | |
| 66 | { | |
| 67 | $host_url = $base_url; | |
| 68 | $abs_path = $path; | |
| 69 | ||
| 70 | // check if path is an absolute URL | |
| 71 | if (preg_match('/^[fhtps]+:\/\//', $path)) { | |
| 72 | return $path; | |
| 73 | } | |
| 74 | ||
| 75 | // check if path is a content-id scheme | |
| 76 | if (strpos($path, 'cid:') === 0) { | |
| 77 | return $path; | |
| 78 | } | |
| 79 | ||
| 80 | // cut base_url to the last directory | |
| 81 | if (strrpos($base_url, '/') > 7) { | |
| 82 | $host_url = substr($base_url, 0, strpos($base_url, '/', 7)); | |
| 83 | $base_url = substr($base_url, 0, strrpos($base_url, '/')); | |
| 84 | } | |
| 85 | ||
| 86 | // $path is absolute | |
| 87 | if ($path[0] == '/') { | |
| 88 | $abs_path = $host_url.$path; | |
| 89 | } | |
| 90 | else { | |
| 91 | // strip './' because its the same as '' | |
| 92 | $path = preg_replace('/^\.\//', '', $path); | |
| 93 | ||
| 94 | if (preg_match_all('/\.\.\//', $path, $matches, PREG_SET_ORDER)) { | |
| 95 | foreach ($matches as $a_match) { | |
| 96 | if (strrpos($base_url, '/')) { | |
| 97 | $base_url = substr($base_url, 0, strrpos($base_url, '/')); | |
| 98 | } | |
| 99 | $path = substr($path, 3); | |
| 100 | } | |
| 101 | } | |
| 102 | ||
| 103 | $abs_path = $base_url.'/'.$path; | |
| 104 | } | |
| 105 | ||
| 106 | return $abs_path; | |
| 107 | } | |
| 108 | } | |
