include/xorg/session.inc.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2006 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 require_once dirname(__FILE__).'/../../classes/Session.php';
  23
  24 // {{{ class XorgSession
  25
  26 class XorgSession
  27 {
  28     // {{{ function init
  29
  30     function init() {
  31         S::init();
  32         if (!S::has('uid')) {
  33             try_cookie();
  34         }
  35         $_SESSION['session'] = new XorgSession;
  36     }
  37
  38     // }}}
  39     // {{{ function destroy()
  40
  41     function destroy() {
  42         S::destroy();
  43         XorgSession::init();
  44     }
  45
  46     // }}}
  47     // {{{ function doAuth()
  48
  49     function doAuth($new_name = false)
  50     {
  51         global $globals;
  52         if (S::identified()) { // ok, c'est bon, on n'a rien à faire
  53             return true;
  54         }
  55
  56         if (!Env::has('username') || !Env::has('response')
  57         ||  !S::has('challenge'))
  58         {
  59             return false;
  60         }
  61
  62         // si on vient de recevoir une identification par passwordpromptscreen.tpl
  63         // ou passwordpromptscreenlogged.tpl
  64         $uname = Env::get('username');
  65
  66         if (Env::get('domain') == "alias") {
  67
  68             $res = XDB::query(
  69                 "SELECT redirect
  70                    FROM virtual
  71              INNER JOIN virtual_redirect USING(vid)
  72                   WHERE alias LIKE {?}", $uname."@".$globals->mail->alias_dom);
  73             $redirect = $res->fetchOneCell();
  74             if ($redirect) {
  75                 $login = substr($redirect, 0, strpos($redirect, '@'));
  76             } else {
  77                 $login = "";
  78             }
  79         } else {
  80             $login = $uname;
  81         }
  82
  83         $field = (!$redirect && preg_match('/^\d*$/', $uname)) ? 'id' : 'alias';
  84         $res   = XDB::query(
  85                     "SELECT  u.user_id, u.password
  86                        FROM  auth_user_md5 AS u
  87                  INNER JOIN  aliases       AS a ON ( a.id=u.user_id AND type!='homonyme' )
  88                       WHERE  a.$field = {?} AND u.perms IN('admin','user')", $login);
  89
  90         $logger =& S::v('log');
  91         if (list($uid, $password) = $res->fetchOneRow()) {
  92                 require_once('secure_hash.inc.php');
  93                     $expected_response=hash_encrypt("$uname:$password:".S::v('challenge'));
  94                     // le password de la base est peut-être encore encodé en md5
  95                     if (Env::get('response') != $expected_response) {
  96                       $new_password = hash_xor(Env::get('xorpass'), $password);
  97                       $expected_response = hash_encrypt("$uname:$new_password:".S::v('challenge'));
  98                       if (Env::get('response') == $expected_response) {
  99                           XDB::execute("UPDATE auth_user_md5 SET password = {?} WHERE user_id = {?}", $new_password, $uid);
 100                       }
 101                     }
 102                     if (Env::get('response') == $expected_response) {
 103                 if (Env::has('domain')) {
 104                     if (($domain = Env::get('domain', 'login')) == 'alias') {
 105                         setcookie('ORGdomain', "alias", (time()+25920000), '/', '', 0);
 106                     } else {
 107                         setcookie('ORGdomain', '', (time()-3600), '/', '', 0);
 108                     }
 109                     // pour que la modification soit effective dans le reste de la page
 110                     $_COOKIE['ORGdomain'] = $domain;
 111                 }
 112
 113                 S::kill('challenge');
 114                 if ($logger) {
 115                     $logger->log('auth_ok');
 116                 }
 117                         start_connexion($uid, true);
 118                 if (Env::get('remember', 'false') == 'true') {
 119                     $cookie = hash_encrypt(S::v('password'));
 120                     setcookie('ORGaccess',$cookie,(time()+25920000),'/','',0);
 121                     if ($logger) {
 122                         $logger->log("cookie_on");
 123                     }
 124                 } else {
 125                     setcookie('ORGaccess', '', time() - 3600, '/', '', 0);
 126
 127                     if ($logger) {
 128                         $logger->log("cookie_off");
 129                     }
 130                 }
 131                         return true;
 132                     } elseif ($logger) {
 133                 $logger->log('auth_fail','bad password');
 134             }
 135         } elseif ($logger) {
 136             $logger->log('auth_fail','bad login');
 137         }
 138
 139         return false;
 140     }
 141
 142     // }}}
 143     // {{{ function doAuthCookie()
 144
 145     /** Try to do a cookie-based authentication.
 146      *
 147      * @param page the calling page (by reference)
 148      */
 149     function doAuthCookie()
 150     {
 151         if (S::logged()) {
 152             return true;
 153         }
 154
 155         if (Env::has('username') and Env::has('response')) {
 156             return XorgSession::doAuth();
 157         }
 158
 159         if ($r = try_cookie()) {
 160             return XorgSession::doAuth(($r > 0));
 161         }
 162
 163         return false;
 164     }
 165
 166     // }}}
 167 }
 168
 169 // }}}
 170 // {{{ function try_cookie()
 171
 172 /** réalise la récupération de $_SESSION pour qqn avec cookie
 173  * @return  int     0 if all OK, -1 if no cookie, 1 if cookie with bad hash,
 174  *                  -2 should not happen
 175  */
 176 function try_cookie()
 177 {
 178     if (Cookie::get('ORGaccess') == '' or !Cookie::has('ORGuid')) {
 179         return -1;
 180     }
 181
 182     $res = @XDB::query(
 183             "SELECT user_id,password FROM auth_user_md5 WHERE user_id = {?} AND perms IN('admin','user')",
 184             Cookie::getInt('ORGuid')
 185     );
 186     if ($res->numRows() != 0) {
 187         list($uid, $password) = $res->fetchOneRow();
 188         require_once('secure_hash.inc.php');
 189         $expected_value       = hash_encrypt($password);
 190         if ($expected_value == Cookie::get('ORGaccess')) {
 191             start_connexion($uid, false);
 192             return 0;
 193         } else {
 194             return 1;
 195         }
 196     }
 197
 198     return -2;
 199 }
 200
 201 // }}}
 202 // {{{ function start_connexion()
 203
 204 /** place les variables de session dépendants de auth_user_md5
 205  * et met à jour les dates de dernière connexion si nécessaire
 206  * @return void
 207  * @see controlpermanent.inc.php controlauthentication.inc.php
 208  */
 209 function start_connexion ($uid, $identified)
 210 {
 211     $res  = XDB::query("
 212         SELECT  u.user_id AS uid, prenom, nom, perms, promo, matricule, password, FIND_IN_SET('femme', u.flags) AS femme,
 213                 UNIX_TIMESTAMP(s.start) AS lastlogin, s.host, a.alias AS forlife, a2.alias AS bestalias,
 214                 q.core_mail_fmt AS mail_fmt, UNIX_TIMESTAMP(q.banana_last) AS banana_last, q.watch_last, q.core_rss_hash
 215           FROM  auth_user_md5   AS u
 216     INNER JOIN  auth_user_quick AS q  USING(user_id)
 217     INNER JOIN  aliases         AS a  ON (u.user_id = a.id AND a.type='a_vie')
 218     INNER JOIN  aliases         AS a2 ON (u.user_id = a2.id AND FIND_IN_SET('bestalias',a2.flags))
 219      LEFT JOIN  logger.sessions AS s  ON (s.uid=u.user_id AND s.suid=0)
 220          WHERE  u.user_id = {?} AND u.perms IN('admin','user')
 221       ORDER BY  s.start DESC
 222          LIMIT  1", $uid);
 223     $sess = $res->fetchOneAssoc();
 224     $suid = S::v('suid');
 225
 226     if ($suid) {
 227         $logger = new DiogenesCoreLogger($uid, $suid);
 228         $logger->log("suid_start", S::v('forlife')." by {$suid['uid']}");
 229         $sess['suid'] = $suid;
 230     } else {
 231         $logger = S::v('log', new DiogenesCoreLogger($uid));
 232         $logger->log("connexion", $_SERVER['PHP_SELF']);
 233         setcookie('ORGuid', $uid, (time()+25920000), '/', '', 0);
 234     }
 235
 236     $_SESSION         = $sess;
 237     $_SESSION['log']  = $logger;
 238     $_SESSION['auth'] = ($identified ? AUTH_MDP : AUTH_COOKIE);
 239     set_skin();
 240 }
 241
 242 // }}}
 243
 244 function set_skin()
 245 {
 246     global $globals;
 247     if (S::logged() && !S::has('skin')) {
 248         $uid = S::v('uid');
 249         $res = XDB::query("SELECT  skin_tpl
 250                              FROM  auth_user_quick AS a
 251                        INNER JOIN  skins           AS s ON a.skin = s.id
 252                             WHERE  user_id = {?} AND skin_tpl != ''", $uid);
 253         if ($_SESSION['skin'] = $res->fetchOneCell()) {
 254             return;
 255         }
 256     }
 257 }
 258
 259 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker:
 260 ?>