| commit | author | age | ||
| 0c2596 | 1 | <?php |
| A | 2 | |
| a95874 | 3 | /** |
| 0c2596 | 4 | +-----------------------------------------------------------------------+ |
| A | 5 | | This file is part of the Roundcube Webmail client | |
| 6 | | Copyright (C) 2005-2012, The Roundcube Dev Team | | |
| 7 | | | | |
| 8 | | Licensed under the GNU General Public License version 3 or | | |
| 9 | | any later version with exceptions for skins & plugins. | | |
| 10 | | See the README file for a full license statement. | | |
| 11 | | | | |
| 12 | | PURPOSE: | | |
| 13 | | Provide basic functions for base URL replacement | | |
| 14 | +-----------------------------------------------------------------------+ | |
| 15 | | Author: Thomas Bruederli <roundcube@gmail.com> | | |
| 16 | +-----------------------------------------------------------------------+ | |
| 17 | */ | |
| 18 | ||
| 19 | /** | |
| 20 | * Helper class to turn relative urls into absolute ones | |
| 21 | * using a predefined base | |
| 22 | * | |
| 9ab346 | 23 | * @package Framework |
| a6fd15 | 24 | * @subpackage Utils |
| 9ab346 | 25 | * @author Thomas Bruederli <roundcube@gmail.com> |
| 0c2596 | 26 | */ |
| A | 27 | class rcube_base_replacer |
| 28 | { | |
| 29 | private $base_url; | |
| 30 | ||
| 31 | ||
| a95874 | 32 | /** |
| AM | 33 | * Class constructor |
| 34 | * | |
| 35 | * @param string $base Base URL | |
| 36 | */ | |
| 0c2596 | 37 | public function __construct($base) |
| A | 38 | { |
| 39 | $this->base_url = $base; | |
| 40 | } | |
| 41 | ||
| a95874 | 42 | /** |
| AM | 43 | * Replace callback |
| 44 | * | |
| 45 | * @param array $matches Matching entries | |
| 46 | * | |
| 47 | * @return string Replaced text with absolute URL | |
| 48 | */ | |
| 0c2596 | 49 | public function callback($matches) |
| A | 50 | { |
| 51 | return $matches[1] . '="' . self::absolute_url($matches[3], $this->base_url) . '"'; | |
| 52 | } | |
| 53 | ||
| a95874 | 54 | /** |
| AM | 55 | * Convert base URLs to absolute ones |
| 56 | * | |
| 57 | * @param string $body Text body | |
| 58 | * | |
| 59 | * @return string Replaced text | |
| 60 | */ | |
| 0c2596 | 61 | public function replace($body) |
| A | 62 | { |
| a95874 | 63 | $regexp = array( |
| a79017 | 64 | '/(src|background|href)=(["\']?)([^"\'\s>]+)(\2|\s|>)/i', |
| AM | 65 | '/(url\s*\()(["\']?)([^"\'\)\s]+)(\2)\)/i', |
| a95874 | 66 | ); |
| 0c2596 | 67 | |
| a95874 | 68 | return preg_replace_callback($regexp, array($this, 'callback'), $body); |
| AM | 69 | } |
| 0c2596 | 70 | |
| A | 71 | /** |
| 72 | * Convert paths like ../xxx to an absolute path using a base url | |
| 73 | * | |
| 74 | * @param string $path Relative path | |
| 75 | * @param string $base_url Base URL | |
| 76 | * | |
| 77 | * @return string Absolute URL | |
| 78 | */ | |
| 79 | public static function absolute_url($path, $base_url) | |
| 80 | { | |
| 81 | // check if path is an absolute URL | |
| 82 | if (preg_match('/^[fhtps]+:\/\//', $path)) { | |
| 83 | return $path; | |
| 84 | } | |
| 85 | ||
| 86 | // check if path is a content-id scheme | |
| 87 | if (strpos($path, 'cid:') === 0) { | |
| 88 | return $path; | |
| 89 | } | |
| 9e4246 | 90 | |
| AM | 91 | $host_url = $base_url; |
| 92 | $abs_path = $path; | |
| 0c2596 | 93 | |
| A | 94 | // cut base_url to the last directory |
| 95 | if (strrpos($base_url, '/') > 7) { | |
| 96 | $host_url = substr($base_url, 0, strpos($base_url, '/', 7)); | |
| 97 | $base_url = substr($base_url, 0, strrpos($base_url, '/')); | |
| 98 | } | |
| 99 | ||
| 100 | // $path is absolute | |
| 101 | if ($path[0] == '/') { | |
| 102 | $abs_path = $host_url.$path; | |
| 103 | } | |
| 104 | else { | |
| 105 | // strip './' because its the same as '' | |
| 106 | $path = preg_replace('/^\.\//', '', $path); | |
| 107 | ||
| 108 | if (preg_match_all('/\.\.\//', $path, $matches, PREG_SET_ORDER)) { | |
| 9e4246 | 109 | $cnt = count($matches); |
| AM | 110 | while ($cnt--) { |
| ff6de9 | 111 | if ($pos = strrpos($base_url, '/')) { |
| AM | 112 | $base_url = substr($base_url, 0, $pos); |
| 0c2596 | 113 | } |
| A | 114 | $path = substr($path, 3); |
| 115 | } | |
| 116 | } | |
| 117 | ||
| 118 | $abs_path = $base_url.'/'.$path; | |
| 119 | } | |
| 120 | ||
| 121 | return $abs_path; | |
| 122 | } | |
| 123 | } | |
