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