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1 | <?php |
2 | /*************************************************************************** |
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3 | * Copyright (C) 2003-2007 Polytechnique.org * |
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4 | * http://opensource.polytechnique.org/ * |
5 | * * |
6 | * This program is free software; you can redistribute it and/or modify * |
7 | * it under the terms of the GNU General Public License as published by * |
8 | * the Free Software Foundation; either version 2 of the License, or * |
9 | * (at your option) any later version. * |
10 | * * |
11 | * This program is distributed in the hope that it will be useful, * |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
14 | * GNU General Public License for more details. * |
15 | * * |
16 | * You should have received a copy of the GNU General Public License * |
17 | * along with this program; if not, write to the Free Software * |
18 | * Foundation, Inc., * |
19 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * |
20 | ***************************************************************************/ |
21 | |
22 | class Session |
23 | { |
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24 | public static function init() |
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25 | { |
26 | @session_start(); |
27 | if (empty($_SESSION['challenge'])) { |
28 | $_SESSION['challenge'] = sha1(uniqid(rand(), true)); |
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29 | } |
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30 | if (!isset($_SESSION['perms']) || !($_SESSION['perms'] instanceof FlagSet)) { |
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31 | $_SESSION['perms'] = new FlagSet(); |
32 | } |
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33 | } |
34 | |
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35 | public static function destroy() |
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36 | { |
37 | @session_destroy(); |
38 | unset($_SESSION); |
39 | } |
40 | |
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41 | public static function has($key) |
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42 | { |
43 | return isset($_SESSION[$key]); |
44 | } |
45 | |
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46 | public static function kill($key) |
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47 | { |
48 | unset($_SESSION[$key]); |
49 | } |
50 | |
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51 | public static function v($key, $default = null) |
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52 | { |
53 | return isset($_SESSION[$key]) ? $_SESSION[$key] : $default; |
54 | } |
55 | |
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56 | public static function s($key, $default = '') |
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57 | { |
58 | return (string)Session::v($key, $default); |
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59 | } |
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60 | |
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61 | public static function i($key, $default = 0) |
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62 | { |
63 | $i = Session::v($key, $default); |
64 | return is_numeric($i) ? intval($i) : $default; |
65 | } |
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66 | |
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67 | public static function l(array $keys) |
68 | { |
69 | return array_map(array('Session', 'v'), $keys); |
70 | } |
71 | |
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72 | public static function has_perms() |
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73 | { |
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74 | return Session::logged() && Session::v('perms')->hasFlag(PERMS_ADMIN); |
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75 | } |
76 | |
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77 | public static function logged() |
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78 | { |
79 | return Session::v('auth', AUTH_PUBLIC) >= AUTH_COOKIE; |
80 | } |
81 | |
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82 | public static function identified() |
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83 | { |
84 | return Session::v('auth', AUTH_PUBLIC) >= AUTH_MDP; |
85 | } |
86 | } |
87 | |
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88 | // {{{ function check_perms() |
89 | |
90 | /** verifie si un utilisateur a les droits pour voir une page |
91 | ** si ce n'est pas le cas, on affiche une erreur |
92 | * @return void |
93 | */ |
94 | function check_perms() |
95 | { |
96 | global $page; |
97 | if (!S::has_perms()) { |
98 | if ($_SESSION['log']) { |
99 | $_SESSION['log']->log("noperms",$_SERVER['PHP_SELF']); |
100 | } |
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101 | $page->kill("Tu n'as pas les permissions nécessaires pour accéder à cette page."); |
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102 | } |
103 | } |
104 | |
105 | // }}} |
106 | |
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107 | // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: |
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108 | ?> |