X-Git-Url: http://git.polytechnique.org/?a=blobdiff_plain;f=classes%2Fxorgsession.php;h=400f809ccf6fd303a66713966b7c856b3308e9bc;hb=fbf66f5e730def1c20bf36004f02f46c2c96bcfc;hp=12d06e26b6014a4dc9dcba1a4f15906a1c8322cb;hpb=90c33700ca33738b01195af5effb6b9d62bb08e5;p=platal.git

diff --git a/classes/xorgsession.php b/classes/xorgsession.php
index 12d06e2..400f809 100644
--- a/classes/xorgsession.php
+++ b/classes/xorgsession.php
@@ -1,6 +1,6 @@
 <?php
 /***************************************************************************
- *  Copyright (C) 2003-2010 Polytechnique.org                              *
+ *  Copyright (C) 2003-2011 Polytechnique.org                              *
  *  http://opensource.polytechnique.org/                                   *
  *                                                                         *
  *  This program is free software; you can redistribute it and/or modify   *
@@ -81,9 +81,9 @@ class XorgSession extends PlSession
     {
         if ($login_type == 'alias') {
             $res = XDB::query('SELECT  a.uid, a.password
-                                 FROM  accounts AS a
-                           INNER JOIN  aliases  AS l ON (l.uid = a.uid AND l.type != \'homonyme\')
-                                WHERE  l.alias = {?} AND a.state = \'active\'',
+                                 FROM  accounts             AS a
+                           INNER JOIN  email_source_account AS e ON (e.uid = a.uid)
+                                WHERE  e.email = {?}',
                               $login);
         } else {
             $res = XDB::query('SELECT  uid, password
@@ -140,29 +140,19 @@ class XorgSession extends PlSession
         if (S::suid()) {
             $login = $uname = S::suid('uid');
             $loginType = 'uid';
-            $redirect = false;
         } else {
             $uname = Post::v('username');
             if (Post::s('domain') == "alias") {
-                $res = XDB::query('SELECT  redirect
-                                     FROM  virtual
-                               INNER JOIN  virtual_redirect USING(vid)
-                                    WHERE  alias LIKE {?}',
-                                   $uname . '@' . $globals->mail->alias_dom);
-                $redirect = $res->fetchOneCell();
-                if ($redirect) {
-                    $login = substr($redirect, 0, strpos($redirect, '@'));
-                } else {
-                    $login = '';
-                }
-                $loginType = 'alias';
-            } else if (Post::s('domain') == "ax") {
+                $login = XDB::fetchOneCell('SELECT  uid
+                                              FROM  email_source_account
+                                             WHERE  email = {?} AND type = \'alias_aux\'',
+                                           $uname);
+                $loginType = 'uid';
+            } else if (Post::s('domain') == 'hruid') {
                 $login = $uname;
-                $redirect = false;
                 $loginType = 'hruid';
             } else {
                 $login = $uname;
-                $redirect = false;
                 $loginType = is_numeric($uname) ? 'uid' : 'alias';
             }
         }
@@ -208,8 +198,7 @@ class XorgSession extends PlSession
         }
 
         // Loads uid and hruid into the session for developement conveniance.
-        $_SESSION = array_merge($_SESSION, array('uid' => $user->id(), 'hruid' => $user->hruid, 'token' => $user->token));
-        unset($_SESSION['perms']);
+        $_SESSION = array_merge($_SESSION, array('uid' => $user->id(), 'hruid' => $user->hruid, 'token' => $user->token, 'user' => $user));
 
         // Starts the session's logger, and sets up the permanent cookie.
         if (S::suid()) {
@@ -259,6 +248,54 @@ class XorgSession extends PlSession
         }
     }
 
+    /**
+     * The authentication schema is based on three query parameters:
+     *   ?user=<hruid>&timestamp=<timestamp>&sig=<sig>
+     * where:
+     *   - hruid is the hruid of the querying user
+     *   - timestamp is the current UNIX timestamp, which has to be within a
+     *     given distance of the server-side UNIX timestamp
+     *   - sig is the HMAC of "<method>#<resource>#<payload>#<timestamp>" using
+     *     a known secret of the user as the key.
+     *
+     * At the moment, the shared secret of the user is the sha1 hash of its
+     * password. This is temporary, though, until better support for tokens is
+     * implemented in plat/al.
+     * TODO(vzanotti): Switch to dedicated secrets for authentication.
+     */
+    public function apiAuth($method, $resource, $payload)
+    {
+        // Verify that the timestamp is within acceptable bounds.
+        $timestamp = Env::i('timestamp', 0);
+        if (abs($timestamp - time()) > Platal::globals()->api->timestamp_tolerance) {
+            return null;
+        }
+
+        // Retrieve the user corresponding to the forlife. Note that at the
+        // moment, other aliases are also accepted.
+        $user = User::getSilent(Env::s('user', ''));
+        if (is_null($user) || !$user->isActive()) {
+            return null;
+        }
+
+        // Determine the list of tokens associated with the user. At the moment,
+        // this is just the sha1 of the password.
+        $tokens = array($user->password());
+
+        // For each token, try to validate the signature.
+        $message = implode('#', array($method, $resource, $payload, $timestamp));
+        $signature = Env::s('sig');
+        foreach ($tokens as $token) {
+            $expected_signature = hash_hmac(
+                Platal::globals()->api->hmac_algo, $message, $token);
+            if ($signature == $expected_signature) {
+                return $user;
+            }
+        }
+
+        return null;
+    }
+
     public function tokenAuth($login, $token)
     {
         $res = XDB::query('SELECT  a.uid, a.hruid