93c81a0cc64bd039dbef592110cefd6b70bffc8a
[platal.git] / classes / xorgsession.php
1 <?php
2 /***************************************************************************
3 * Copyright (C) 2003-2008 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 extends PlSession
23 {
24 public function __construct()
25 {
26 parent::__construct();
27 }
28
29 public function startAvailableAuth()
30 {
31 if (!S::logged()) {
32 $cookie = $this->tryCookie();
33 if ($cookie == 0) {
34 return $this->start(AUTH_COOKIE);
35 } else if ($cookie == 1 || $cookie == -2) {
36 return false;
37 }
38 }
39 if ((check_ip('dangerous') && S::has('uid')) || check_account()) {
40 S::logger()->log("view_page", $_SERVER['REQUEST_URI']);
41 }
42 return true;
43 }
44
45 /** Check the cookie and set the associated user_id in the auth_by_cookie session variable.
46 */
47 private function tryCookie()
48 {
49 S::kill('auth_by_cookie');
50 if (Cookie::v('access') == '' || !Cookie::has('uid')) {
51 return -1;
52 }
53
54 $res = XDB::query('SELECT user_id, password
55 FROM auth_user_md5
56 WHERE user_id = {?} AND perms IN(\'admin\', \'user\')',
57 Cookie::i('uid'));
58 if ($res->numRows() != 0) {
59 list($uid, $password) = $res->fetchOneRow();
60 require_once 'secure_hash.inc.php';
61 $expected_value = hash_encrypt($password);
62 if ($expected_value == Cookie::v('access')) {
63 S::set('auth_by_cookie', $uid);
64 return 0;
65 } else {
66 return 1;
67 }
68 }
69 return -2;
70 }
71
72 private function checkPassword($uname, $login, $response, $login_type)
73 {
74 $res = XDB::query('SELECT u.user_id, u.password
75 FROM auth_user_md5 AS u
76 INNER JOIN aliases AS a ON (a.id = u.user_id AND type != \'homonyme\')
77 WHERE a.' . $login_type . ' = {?} AND u.perms IN(\'admin\', \'user\')',
78 $login);
79 if (list($uid, $password) = $res->fetchOneRow()) {
80 require_once 'secure_hash.inc.php';
81 $expected_response = hash_encrypt("$uname:$password:" . S::v('challenge'));
82 if ($response != $expected_response && Env::has('xorpass')
83 && !preg_match('/^0*$/', Env::v('xorpass'))) {
84 $new_password = hash_xor(Env::v('xorpass'), $password);
85 $expected_response = hash_encrypt("$uname:$new_password:" . S::v('challenge'));
86 if ($response == $expected_response) {
87 XDB::execute('UPDATE auth_user_md5
88 SET password = {?}
89 WHERE user_id = {?}',
90 $new_password, $uid);
91
92 // Update the GoogleApps password as well, if required.
93 global $globals;
94 if ($globals->mailstorage->googleapps_domain) {
95 require_once 'googleapps.inc.php';
96 $user = User::getSilent($uid);
97 $account = new GoogleAppsAccount($user);
98 if ($account->active() && $account->sync_password) {
99 $account->set_password($new_password);
100 }
101 }
102 }
103 }
104 if ($response != $expected_response) {
105 S::logger($uid)->log('auth_fail', 'bad password');
106 return null;
107 }
108 return $uid;
109 }
110 return null;
111 }
112
113
114 /** Check auth.
115 */
116 protected function doAuth($level)
117 {
118 global $globals;
119
120 /* Cookie authentication
121 */
122 if ($level == AUTH_COOKIE && !S::has('auth_by_cookie')) {
123 $this->tryCookie();
124 }
125 if ($level == AUTH_COOKIE && S::has('auth_by_cookie')) {
126 if (!S::logged()) {
127 S::set('auth', AUTH_COOKIE);
128 }
129 return S::i('auth_by_cookie');
130 }
131
132
133 /* We want to do auth... we must have infos from a form.
134 */
135 if (!Post::has('username') || !Post::has('response') || !S::has('challenge')) {
136 return null;
137 }
138
139 /** We come from an authentication form.
140 */
141 if (S::has('suid')) {
142 $suid = S::v('suid');
143 $login = $uname = $suid['uid'];
144 $redirect = false;
145 } else {
146 $uname = Env::v('username');
147 if (Env::v('domain') == "alias") {
148 $res = XDB::query('SELECT redirect
149 FROM virtual
150 INNER JOIN virtual_redirect USING(vid)
151 WHERE alias LIKE {?}',
152 $uname . '@' . $globals->mail->alias_dom);
153 $redirect = $res->fetchOneCell();
154 if ($redirect) {
155 $login = substr($redirect, 0, strpos($redirect, '@'));
156 } else {
157 $login = '';
158 }
159 } else {
160 $login = $uname;
161 $redirect = false;
162 }
163 }
164
165 $uid = $this->checkPassword($uname, $login, Post::v('response'), (!$redirect && is_numeric($uname)) ? 'id' : 'alias');
166 if (!is_null($uid) && S::has('suid')) {
167 $suid = S::v('suid');
168 if ($suid['uid'] == $uid) {
169 $uid = S::i('uid');
170 } else {
171 $uid = null;
172 }
173 }
174 if (!is_null($uid)) {
175 S::set('auth', AUTH_MDP);
176 if (!S::has('suid')) {
177 if (Post::has('domain')) {
178 if (($domain = Post::v('domain', 'login')) == 'alias') {
179 Cookie::set('domain', 'alias', 300);
180 } else {
181 Cookie::kill('domain');
182 }
183 }
184 }
185 S::kill('challenge');
186 S::logger($uid)->log('auth_ok');
187 }
188 return $uid;
189 }
190
191 protected function startSessionAs($uid, $level)
192 {
193 if ((!is_null(S::v('user')) && S::i('user') != $uid) || (S::has('uid') && S::i('uid') != $uid)) {
194 return false;
195 } else if (S::has('uid')) {
196 return true;
197 }
198 if ($level == AUTH_SUID) {
199 S::set('auth', AUTH_MDP);
200 }
201
202 // Retrieves main user properties.
203 $res = XDB::query("SELECT u.user_id AS uid, u.hruid, prenom, prenom_ini, nom, nom_ini, nom_usage, perms, promo, promo_sortie,
204 matricule, password, FIND_IN_SET('femme', u.flags) AS femme,
205 q.core_mail_fmt AS mail_fmt, UNIX_TIMESTAMP(q.banana_last) AS banana_last, q.watch_last, q.core_rss_hash,
206 FIND_IN_SET('watch', u.flags) AS watch_account, q.last_version, g.g_account_name IS NOT NULL AS googleapps,
207 UNIX_TIMESTAMP(s.start) AS lastlogin, s.host
208 FROM auth_user_md5 AS u
209 INNER JOIN auth_user_quick AS q USING(user_id)
210 LEFT JOIN gapps_accounts AS g ON (u.user_id = g.l_userid AND g.g_status = 'active')
211 LEFT JOIN logger.last_sessions AS ls ON (ls.uid = u.user_id)
212 LEFT JOIN logger.sessions AS s ON(s.id = ls.id)
213 WHERE u.user_id = {?} AND u.perms IN('admin', 'user')", $uid);
214 $sess = $res->fetchOneAssoc();
215 $perms = $sess['perms'];
216 unset($sess['perms']);
217
218 // Loads the data into the real session.
219 $_SESSION = array_merge($_SESSION, $sess);
220
221 // Starts the session's logger, and sets up the permanent cookie.
222 if (S::has('suid')) {
223 $suid = S::v('suid');
224 $logger = S::logger($uid);
225 $logger->log("suid_start", S::v('hruid') . " by " . $suid['hruid']);
226 } else {
227 $logger = S::logger($uid);
228 $logger->saveLastSession();
229 Cookie::set('uid', $uid, 300);
230
231 if (S::i('auth_by_cookie') == $uid || Post::v('remember', 'false') == 'true') {
232 $this->setAccessCookie(false, S::i('auth_by_cookie') != $uid);
233 } else {
234 $this->killAccessCookie();
235 }
236 }
237
238 // Finalizes the session setup.
239 S::set('perms', User::makePerms($perms));
240 $this->securityChecks();
241 $this->setSkin();
242 $this->updateNbNotifs();
243 check_redirect();
244
245 // We should not have to use this private data anymore
246 S::kill('auth_by_cookie');
247 return true;
248 }
249
250 private function securityChecks()
251 {
252 $mail_subject = array();
253 if (check_account()) {
254 $mail_subject[] = 'Connexion d\'un utilisateur surveillé';
255 }
256 if (check_ip('unsafe')) {
257 $mail_subject[] = 'Une IP surveillee a tente de se connecter';
258 if (check_ip('ban')) {
259 send_warning_mail(implode(' - ', $mail_subject));
260 $this->destroy();
261 Platal::page()->kill('Une erreur est survenue lors de la procédure d\'authentification. '
262 . 'Merci de contacter au plus vite '
263 . '<a href="mailto:support@polytechnique.org">support@polytechnique.org</a>');
264 return false;
265 }
266 }
267 if (count($mail_subject)) {
268 send_warning_mail(implode(' - ', $mail_subject));
269 }
270 }
271
272 public function tokenAuth($login, $token)
273 {
274 $res = XDB::query('SELECT u.hruid
275 FROM aliases AS a
276 INNER JOIN auth_user_md5 AS u ON (a.id = u.user_id AND u.perms IN ("admin", "user"))
277 INNER JOIN auth_user_quick AS q ON (a.id = q.user_id AND q.core_rss_hash = {?})
278 WHERE a.alias = {?} AND a.type != "homonyme"', $token, $login);
279 if ($res->numRows() == 1) {
280 $data = $res->fetchOneAssoc();
281 return new User($data['hruid'], $data);
282 }
283 return null;
284 }
285
286 public function makePerms($perm)
287 {
288 $flags = new PlFlagSet();
289 if ($perm == 'disabled' || $perm == 'ext') {
290 S::set('perms', $flags);
291 return;
292 }
293 $flags->addFlag(PERMS_USER);
294 if ($perm == 'admin') {
295 $flags->addFlag(PERMS_ADMIN);
296 }
297 S::set('perms', $flags);
298 }
299
300 public function setSkin()
301 {
302 if (S::logged() && (!S::has('skin') || S::has('suid'))) {
303 $uid = S::v('uid');
304 $res = XDB::query("SELECT skin_tpl
305 FROM auth_user_quick AS a
306 INNER JOIN skins AS s ON a.skin = s.id
307 WHERE user_id = {?} AND skin_tpl != ''", $uid);
308 S::set('skin', $res->fetchOneCell());
309 }
310 }
311
312 public function loggedLevel()
313 {
314 return AUTH_COOKIE;
315 }
316
317 public function sureLevel()
318 {
319 return AUTH_MDP;
320 }
321
322
323 public function updateNbNotifs()
324 {
325 require_once 'notifs.inc.php';
326 $n = select_notifs(false, S::i('uid'), S::v('watch_last'), false);
327 S::set('notifs', $n->numRows());
328 }
329
330 public function setAccessCookie($replace = false, $log = true) {
331 if (S::has('suid') || ($replace && !Cookie::blank('access'))) {
332 return;
333 }
334 require_once('secure_hash.inc.php');
335 Cookie::set('access', hash_encrypt(S::v('password')), 300, true);
336 if ($log) {
337 S::logger()->log('cookie_on');
338 }
339 }
340
341 public function killAccessCookie($log = true) {
342 Cookie::kill('access');
343 if ($log) {
344 S::logger()->log('cookie_off');
345 }
346 }
347
348 public function killLoginFormCookies() {
349 Cookie::kill('uid');
350 Cookie::kill('domain');
351 }
352 }
353
354 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8:
355 ?>