2 /***************************************************************************
3 * Copyright (C) 2003-2011 Polytechnique.org *
4 * http://opensource.polytechnique.org/ *
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. *
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. *
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 *
19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
20 ***************************************************************************/
22 class XorgSession
extends PlSession
24 const INVALID_USER
= -2;
26 const COOKIE_SUCCESS
= 0;
27 const INVALID_COOKIE
= 1;
29 public function __construct()
31 parent
::__construct();
34 public function startAvailableAuth()
37 switch ($this->tryCookie()) {
38 case self
::COOKIE_SUCCESS
:
39 if (!$this->start(AUTH_COOKIE
)) {
44 case self
::INVALID_USER
:
45 case self
::INVALID_COOKIE
:
49 if ((check_ip('dangerous') && S
::has('uid')) ||
check_account()) {
50 S
::logger()->log("view_page", $_SERVER['REQUEST_URI']);
55 /** Check the cookie and set the associated uid in the auth_by_cookie session variable.
57 private function tryCookie()
59 S
::kill('auth_by_cookie');
60 if (Cookie
::v('access') == '' ||
!Cookie
::has('uid')) {
61 return self
::NO_COOKIE
;
64 $res = XDB
::query('SELECT uid, password
66 WHERE uid = {?} AND state = \'active\'',
68 if ($res->numRows() != 0) {
69 list($uid, $password) = $res->fetchOneRow();
70 if (sha1($password) == Cookie
::v('access')) {
71 S
::set('auth_by_cookie', $uid);
72 return self
::COOKIE_SUCCESS
;
74 return self
::INVALID_COOKIE
;
77 return self
::INVALID_USER
;
80 private function checkPassword($uname, $login, $response, $login_type)
82 if ($login_type == 'alias') {
83 $res = XDB
::query('SELECT a.uid, a.password
85 INNER JOIN email_source_account AS e ON (e.uid = a.uid)
89 $res = XDB
::query('SELECT uid, password
91 WHERE ' . $login_type . ' = {?}',
94 if (list($uid, $password) = $res->fetchOneRow()) {
95 $expected_response = sha1("$uname:$password:" . S
::v('challenge'));
96 /* Deprecates len(password) > 10 conversion. */
97 if ($response != $expected_response) {
99 Platal
::page()->trigError('Mot de passe ou nom d\'utilisateur invalide');
101 Platal
::page()->trigError('Mot de passe invalide');
103 S
::logger($uid)->log('auth_fail', 'bad password');
108 Platal
::page()->trigError('Mot de passe ou nom d\'utilisateur invalide');
115 protected function doAuth($level)
119 /* Cookie authentication
121 if ($level == AUTH_COOKIE
&& !S
::has('auth_by_cookie')) {
124 if ($level == AUTH_COOKIE
&& S
::has('auth_by_cookie')) {
126 S
::set('auth', AUTH_COOKIE
);
128 return User
::getSilentWithUID(S
::i('auth_by_cookie'));
132 /* We want to do auth... we must have infos from a form.
134 if (!Post
::has('username') ||
!Post
::has('response') ||
!S
::has('challenge')) {
138 /** We come from an authentication form.
141 $login = $uname = S
::suid('uid');
144 $uname = Post
::v('username');
145 if (Post
::s('domain') == "alias") {
146 $login = XDB
::fetchOneCell('SELECT uid
147 FROM email_source_account
148 WHERE email = {?} AND type = \'alias_aux\'',
151 } else if (Post
::s('domain') == 'hruid') {
153 $loginType = 'hruid';
156 $loginType = is_numeric($uname) ?
'uid' : 'alias';
160 $uid = $this->checkPassword($uname, $login, Post
::v('response'), $loginType);
161 if (!is_null($uid) && S
::suid()) {
162 if (S
::suid('uid') == $uid) {
168 if (!is_null($uid)) {
169 S
::set('auth', AUTH_MDP
);
171 if (Post
::has('domain')) {
172 $domain = Post
::v('domain', 'login');
173 if ($domain == 'alias') {
174 Cookie
::set('domain', 'alias', 300);
175 } else if ($domain == 'ax') {
176 Cookie
::set('domain', 'ax', 300);
178 Cookie
::kill('domain');
182 S
::kill('challenge');
183 S
::logger($uid)->log('auth_ok');
185 return User
::getSilentWithUID($uid);
188 protected function startSessionAs($user, $level)
190 if ((!is_null(S
::user()) && S
::user()->id() != $user->id())
191 ||
(S
::has('uid') && S
::i('uid') != $user->id())) {
193 } else if (S
::has('uid')) {
196 if ($level == AUTH_SUID
) {
197 S
::set('auth', AUTH_MDP
);
200 // Loads uid and hruid into the session for developement conveniance.
201 $_SESSION = array_merge($_SESSION, array('uid' => $user->id(), 'hruid' => $user->hruid
, 'token' => $user->token
, 'user' => $user));
203 // Starts the session's logger, and sets up the permanent cookie.
205 S
::logger()->log("suid_start", S
::v('hruid') . ' by ' . S
::suid('hruid'));
207 S
::logger()->saveLastSession();
208 Cookie
::set('uid', $user->id(), 300);
210 if (S
::i('auth_by_cookie') == $user->id() || Post
::v('remember', 'false') == 'true') {
211 $this->setAccessCookie(false
, S
::i('auth_by_cookie') != $user->id());
213 $this->killAccessCookie();
217 // Finalizes the session setup.
218 $this->makePerms($user->perms
, $user->is_admin
);
219 $this->securityChecks();
221 $this->updateNbNotifs();
224 // We should not have to use this private data anymore
225 S
::kill('auth_by_cookie');
229 private function securityChecks()
231 $mail_subject = array();
232 if (check_account()) {
233 $mail_subject[] = 'Connexion d\'un utilisateur surveillé';
235 if (check_ip('unsafe')) {
236 $mail_subject[] = 'Une IP surveillee a tente de se connecter';
237 if (check_ip('ban')) {
238 send_warning_mail(implode(' - ', $mail_subject));
240 Platal
::page()->kill('Une erreur est survenue lors de la procédure d\'authentification. '
241 . 'Merci de contacter au plus vite '
242 . '<a href="mailto:support@polytechnique.org">support@polytechnique.org</a>');
246 if (count($mail_subject)) {
247 send_warning_mail(implode(' - ', $mail_subject));
252 * The authentication schema is based on three query parameters:
253 * ?user=<hruid>×tamp=<timestamp>&sig=<sig>
255 * - hruid is the hruid of the querying user
256 * - timestamp is the current UNIX timestamp, which has to be within a
257 * given distance of the server-side UNIX timestamp
258 * - sig is the HMAC of "<method>#<resource>#<payload>#<timestamp>" using
259 * a known secret of the user as the key.
261 * At the moment, the shared secret of the user is the sha1 hash of its
262 * password. This is temporary, though, until better support for tokens is
263 * implemented in plat/al.
264 * TODO(vzanotti): Switch to dedicated secrets for authentication.
266 public function apiAuth($method, $resource, $payload)
268 // Verify that the timestamp is within acceptable bounds.
269 $timestamp = Env
::i('timestamp', 0);
270 if (abs($timestamp - time()) > Platal
::globals()->api
->timestamp_tolerance
) {
274 // Retrieve the user corresponding to the forlife. Note that at the
275 // moment, other aliases are also accepted.
276 $user = User
::getSilent(Env
::s('user', ''));
277 if (is_null($user) ||
!$user->isActive()) {
281 // Determine the list of tokens associated with the user. At the moment,
282 // this is just the sha1 of the password.
283 $tokens = array($user->password());
285 // For each token, try to validate the signature.
286 $message = implode('#', array($method, $resource, $payload, $timestamp));
287 $signature = Env
::s('sig');
288 foreach ($tokens as $token) {
289 $expected_signature = hash_hmac(
290 Platal
::globals()->api
->hmac_algo
, $message, $token);
291 if ($signature == $expected_signature) {
299 public function tokenAuth($login, $token)
301 $res = XDB
::query('SELECT a.uid, a.hruid
303 WHERE a.token = {?} AND a.hruid = {?} AND a.state = \'active\'',
305 if ($res->numRows() == 1) {
306 return new User(null
, $res->fetchOneAssoc());
311 protected function makePerms($perm, $is_admin)
313 S
::set('perms', User
::makePerms($perm, $is_admin));
316 public function setSkin()
318 if (S
::logged() && (!S
::has('skin') || S
::suid())) {
319 $res = XDB
::query('SELECT skin_tpl
321 INNER JOIN skins AS s on (a.skin = s.id)
322 WHERE a.uid = {?} AND skin_tpl != \'\'', S
::i('uid'));
323 S
::set('skin', $res->fetchOneCell());
327 public function loggedLevel()
332 public function sureLevel()
338 public function updateNbNotifs()
340 require_once 'notifs.inc.php';
342 $n = Watch
::getCount($user);
343 S
::set('notifs', $n);
346 public function setAccessCookie($replace = false
, $log = true
) {
347 if (S
::suid() ||
($replace && !Cookie
::blank('access'))) {
350 Cookie
::set('access', sha1(S
::user()->password()), 300, true
);
352 S
::logger()->log('cookie_on');
356 public function killAccessCookie($log = true
) {
357 Cookie
::kill('access');
359 S
::logger()->log('cookie_off');
363 public function killLoginFormCookies() {
365 Cookie
::kill('domain');
369 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: