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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 | $_SESSION['challenge'] = sha1(uniqid(rand(), true)); |
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29 | } |
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30 | } |
31 | |
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32 | public static function destroy() |
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33 | { |
34 | @session_destroy(); |
35 | unset($_SESSION); |
36 | } |
37 | |
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38 | public static function has($key) |
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39 | { |
40 | return isset($_SESSION[$key]); |
41 | } |
42 | |
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43 | public static function kill($key) |
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44 | { |
45 | unset($_SESSION[$key]); |
46 | } |
47 | |
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48 | public static function v($key, $default = null) |
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49 | { |
50 | return isset($_SESSION[$key]) ? $_SESSION[$key] : $default; |
51 | } |
52 | |
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53 | public static function i($key, $default = 0) |
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54 | { |
55 | $i = Session::v($key, $default); |
56 | return is_numeric($i) ? intval($i) : $default; |
57 | } |
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58 | |
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59 | public static function has_perms() |
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60 | { |
61 | return Session::logged() && Session::v('perms') == PERMS_ADMIN; |
62 | } |
63 | |
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64 | public static function logged() |
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65 | { |
66 | return Session::v('auth', AUTH_PUBLIC) >= AUTH_COOKIE; |
67 | } |
68 | |
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69 | public static function identified() |
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70 | { |
71 | return Session::v('auth', AUTH_PUBLIC) >= AUTH_MDP; |
72 | } |
73 | } |
74 | |
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75 | // {{{ function check_perms() |
76 | |
77 | /** verifie si un utilisateur a les droits pour voir une page |
78 | ** si ce n'est pas le cas, on affiche une erreur |
79 | * @return void |
80 | */ |
81 | function check_perms() |
82 | { |
83 | global $page; |
84 | if (!S::has_perms()) { |
85 | if ($_SESSION['log']) { |
86 | $_SESSION['log']->log("noperms",$_SERVER['PHP_SELF']); |
87 | } |
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88 | $page->kill("Tu n'as pas les permissions nécessaires pour accéder à cette page."); |
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89 | } |
90 | } |
91 | |
92 | // }}} |
93 | |
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94 | // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: |
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95 | ?> |