include/xnet/session.inc.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2007 Polytechnique.org                              *
   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 XnetSession
  23 {
  24     // {{{ function init
  25
  26     public static function init() {
  27         global $globals;
  28
  29         S::init();
  30
  31         if (!S::logged()) {
  32             // prevent connexion to be linked to deconnexion
  33             if (($i = strpos($_SERVER['REQUEST_URI'], 'exit')) !== false)
  34                 $returl = "http://{$_SERVER['SERVER_NAME']}".substr($_SERVER['REQUEST_URI'], 0, $i);
  35             else
  36                 $returl = "http://{$_SERVER['SERVER_NAME']}{$_SERVER['REQUEST_URI']}";
  37             $url  = "https://www.polytechnique.org/auth-groupex.php";
  38             $url .= "?session=" . session_id();
  39             $url .= "&challenge=" . S::v('challenge');
  40             $url .= "&pass=" . md5(S::v('challenge') . $globals->xnet->secret);
  41             $url .= "&url=".urlencode($returl);
  42             $_SESSION['loginX'] = $url;
  43         }
  44
  45         if (S::logged() && $globals->asso()) {
  46             $perms = S::v('perms');
  47             $perms->rmFlag('groupadmin');
  48             $perms->rmFlag('groupmember');
  49             if (may_update()) {
  50                 $perms->addFlag('groupadmin');
  51                 $perms->addFlag('groupmember');
  52             }
  53             if (is_member()) {
  54                 $perms->addFlag('groupmember');
  55             }
  56             $_SESSION['perms'] = $perms;
  57         }
  58     }
  59
  60     // }}}
  61     // {{{ public static function destroy()
  62
  63     public static function destroy() {
  64         S::destroy();
  65         XnetSession::init();
  66     }
  67
  68     // }}}
  69     // {{{ public static function doAuth()
  70
  71     /** Try to do an authentication.
  72      *
  73      * @param page the calling page (by reference)
  74      */
  75     public static function doAuth()
  76     {
  77         if (S::identified()) { // ok, c'est bon, on n'a rien à faire
  78                 return true;
  79         }
  80
  81         if (Get::has('auth')) {
  82             return XnetSession::doAuthX();
  83         }
  84
  85         return false;
  86     }
  87
  88     // }}}
  89     // {{{ doAuthCookie
  90
  91     public static function doAuthCookie() {
  92         return XnetSession::doAuth();
  93     }
  94
  95     // }}}
  96     // {{{ doAuthX
  97
  98     public static function doAuthX()
  99     {
 100         global $globals, $page;
 101
 102         if (md5('1'.S::v('challenge').$globals->xnet->secret.Get::i('uid').'1') != Get::v('auth')) {
 103             $page->kill("Erreur d'authentification avec polytechnique.org !");
 104         }
 105
 106         $res  = XDB::query("
 107             SELECT  u.user_id AS uid, prenom, nom, perms, promo, password, FIND_IN_SET('femme', u.flags) AS femme,
 108                     a.alias AS forlife, a2.alias AS bestalias, q.core_mail_fmt AS mail_fmt, q.core_rss_hash
 109               FROM  auth_user_md5   AS u
 110         INNER JOIN  auth_user_quick AS q  USING(user_id)
 111         INNER JOIN  aliases         AS a  ON (u.user_id = a.id AND a.type='a_vie')
 112         INNER JOIN  aliases         AS a2 ON (u.user_id = a2.id AND FIND_IN_SET('bestalias',a2.flags))
 113              WHERE  u.user_id = {?} AND u.perms IN('admin','user')
 114              LIMIT  1", Get::i('uid'));
 115         $_SESSION = array_merge($_SESSION, $res->fetchOneAssoc());
 116         $_SESSION['auth'] = AUTH_MDP;
 117         require_once 'xorg/session.inc.php';
 118         $_SESSION['perms'] =& XorgSession::make_perms(S::v('perms'));
 119         S::kill('challenge');
 120         S::kill('loginX');
 121         S::kill('may_update');
 122         S::kill('is_member');
 123         Get::kill('auth');
 124         Get::kill('uid');
 125         $path = Get::v('n');
 126         Get::kill('n');
 127         Get::kill('PHPSESSID');
 128
 129         $args = array();
 130         foreach($_GET as $key => $val) {
 131             $args[] = urlencode($key).'='.urlencode($val);
 132         }
 133
 134         http_redirect($globals->baseurl . '/' . $path, join('&', $args));
 135     }
 136
 137     // }}}
 138     // {{{ doSelfSuid
 139
 140     public static function doSelfSuid()
 141     {
 142         if (!S::has('suid')) {
 143             $_SESSION['suid'] = $_SESSION;
 144         }
 145         require_once 'xorg/session.inc.php';
 146         $_SESSION['perms'] =& XorgSession::make_perms('user');
 147     }
 148
 149     // }}}
 150     // {{{ killSuid
 151
 152     public static function killSuid()
 153     {
 154         if (!S::has('suid')) {
 155             return;
 156         }
 157         $suid = S::v('suid');
 158         S::kill('suid');
 159         S::kill('may_update');
 160         S::kill('is_member');
 161         $_SESSION['perms'] = $suid['perms'];
 162     }
 163
 164     // }}}
 165 }
 166
 167 // }}}
 168 // {{{ function may_update
 169
 170 /** Return administration rights for the current asso
 171  * @param force Force administration rights to be read from database
 172  * @param lose  Force administration rights to be false
 173  */
 174 function may_update($force = false, $lose = false)
 175 {
 176     if (!isset($_SESSION['may_update'])) {
 177         $_SESSION['may_update'] = array();
 178     }
 179     $may_update =& $_SESSION['may_update'];
 180
 181     global $globals;
 182     $asso_id = $globals->asso('id');
 183     if (!$asso_id) {
 184         return false;
 185     } elseif ($lose) {
 186         $may_update[$asso_id] = false;
 187     } elseif (S::has_perms() || (S::has('suid') && $force)) {
 188         $may_update[$asso_id] = true;
 189     } elseif (!isset($may_update[$asso_id]) || $force) {
 190         $res = XDB::query("SELECT  perms
 191                              FROM  groupex.membres
 192                             WHERE  uid={?} AND asso_id={?}",
 193                           S::v('uid'), $asso_id);
 194         $may_update[$asso_id] = ($res->fetchOneCell() == 'admin');
 195     }
 196     return $may_update[$asso_id];
 197 }
 198
 199 // }}}
 200 // {{{ function is_member
 201
 202 /** Get membership informations for the current asso
 203  * @param force Force membership to be read from database
 204  * @param lose  Force membership to be false
 205  */
 206 function is_member($force = false, $lose = false)
 207 {
 208     if (!isset($_SESSION['is_member'])) {
 209         $_SESSION['is_member'] = array();
 210     }
 211     $is_member =& $_SESSION['is_member'];
 212
 213     global $globals;
 214     $asso_id = $globals->asso('id');
 215     if (!$asso_id) {
 216         return false;
 217     } elseif ($lose) {
 218         $is_member[$asso_id] = false;
 219     } elseif (S::has('suid') && $force) {
 220         $is_member[$asso_id] = true;
 221     } elseif (!isset($is_member[$asso_id]) || $force) {
 222         $res = XDB::query("SELECT  COUNT(*)
 223                              FROM  groupex.membres
 224                             WHERE  uid={?} AND asso_id={?}",
 225                 S::v('uid'), $asso_id);
 226         $is_member[$asso_id] = ($res->fetchOneCell() == 1);
 227     }
 228     return $is_member[$asso_id];
 229 }
 230
 231 // }}}
 232 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8:
 233 ?>