modules/auth.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2011 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 AuthModule extends PLModule
  23 {
  24     function handlers()
  25     {
  26         return array(
  27             'groupex/donne-chall.php'       => $this->make_hook('chall',              AUTH_PUBLIC),
  28             'groupex/export-econfiance.php' => $this->make_hook('econf',              AUTH_PUBLIC, 'user', NO_HTTPS),
  29
  30             'webservices/manageurs.php'     => $this->make_hook('manageurs',          AUTH_PUBLIC, 'user', NO_HTTPS),
  31
  32             'auth-redirect.php'             => $this->make_hook('redirect',           AUTH_COOKIE, 'user'),
  33             'auth-groupex.php'              => $this->make_hook('groupex_old',        AUTH_COOKIE, 'user'),
  34             'auth-groupex'                  => $this->make_hook('groupex',            AUTH_PUBLIC),
  35             'admin/auth-groupes-x'          => $this->make_hook('admin_authgroupesx', AUTH_MDP,    'admin'),
  36         );
  37     }
  38
  39     function handler_chall($page)
  40     {
  41         $_SESSION["chall"] = uniqid(rand(), 1);
  42         echo $_SESSION["chall"] . "\n" . session_id();
  43         exit;
  44     }
  45
  46     function handler_econf($page)
  47     {
  48         global $globals;
  49
  50         $cle = $globals->core->econfiance;
  51
  52         $res = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n\n<membres>\n\n";
  53
  54         if (S::v('chall') && Get::s('PASS') == md5(S::v('chall').$cle)) {
  55             $list = new MMList(User::getWithUID(10154), "x-econfiance.polytechnique.org");
  56             $members = $list->get_members('membres');
  57             if (is_array($members)) {
  58                 $membres = Array();
  59                 foreach($members[1] as $member) {
  60                     $user = User::getSilent($member[1]);
  61                     if ($user && $user->hasProfile()) {
  62                         $profile = $user->profile();
  63                         $res .= "<membre>\n";
  64                         $res .= "\t<nom>" . $profile->lastName() . "</nom>\n";
  65                         $res .= "\t<prenom>" . $profile->firstName() . "</prenom>\n";
  66                         $res .= "\t<email>" . $user->forlifeEmail() . "</email>\n";
  67                         $res .= "</membre>\n\n";
  68                     }
  69                 }
  70             }
  71             $res .= "</membres>\n\n";
  72
  73             pl_content_headers("text/xml");
  74             echo $res;
  75         }
  76         exit;
  77     }
  78
  79     function handler_manageurs($page)
  80     {
  81         global $globals;
  82
  83         require_once 'webservices/manageurs.server.inc.php';
  84
  85         $ips = array_flip(explode(' ', $globals->manageurs->authorized_ips));
  86         if ($ips && isset($ips[$_SERVER['REMOTE_ADDR']])) {
  87             $server = xmlrpc_server_create();
  88
  89             xmlrpc_server_register_method($server, 'get_annuaire_infos', 'get_annuaire_infos');
  90             xmlrpc_server_register_method($server, 'get_nouveau_infos', 'get_nouveau_infos');
  91
  92             $request  = @$GLOBALS['HTTP_RAW_POST_DATA'];
  93             $response = xmlrpc_server_call_method($server, $request, null);
  94             pl_content_headers("text/xml");
  95             print $response;
  96             xmlrpc_server_destroy($server);
  97         }
  98
  99         exit;
 100     }
 101
 102     function handler_redirect($page)
 103     {
 104         http_redirect(Env::v('dest', '/'));
 105     }
 106
 107     function handler_groupex_old($page)
 108     {
 109         return $this->handler_groupex($page, 'iso-8859-1');
 110     }
 111
 112     /** Handles the 'auth-groupe-x' authentication.
 113      * Expects the following GET parameters:
 114      * - pass: the 'password' for the authentication
 115      * - challenge: the authentication challenge
 116      * - url: the return URL
 117      * - session: the remote PHP session ID
 118      */
 119     function handler_groupex($page, $charset = 'utf8')
 120     {
 121         if (!S::logged()) {
 122             $page->assign('referer', true);
 123             return PL_DO_AUTH;
 124         }
 125
 126         $this->load('auth.inc.php');
 127
 128         $gpex_pass = Get::s('pass');
 129         $gpex_url  = urldecode(Get::s('url'));
 130         if (Get::has('session')) {
 131             if (strpos($gpex_url, '?') === false) {
 132                 $gpex_url .= "?PHPSESSID=" . Get::s('session');
 133             } else {
 134                 $gpex_url .= "&PHPSESSID=" . Get::s('session');
 135             }
 136         }
 137
 138         // Normalize the return URL.
 139         if (!preg_match("/^(http|https):\/\/.*/",$gpex_url)) {
 140             $gpex_url = "http://$gpex_url";
 141         }
 142         $gpex_challenge = Get::s('challenge');
 143
 144         // Update the last login information (unless the user is in SUID).
 145         $uid = S::i('uid');
 146         if (!S::suid()) {
 147             global $platal;
 148             S::logger($uid)->log('connexion_auth_ext', $platal->path.' '.urldecode($_GET['url']));
 149         }
 150
 151         // Iterate over the auth token to find which one did sign the request.
 152         $res = XDB::iterRow('SELECT privkey, name, datafields, returnurls FROM group_auth');
 153         while (list($privkey, $name, $datafields, $returnurls) = $res->next()) {
 154             if (md5($gpex_challenge.$privkey) == $gpex_pass) {
 155                 $returnurls = trim($returnurls);
 156                 // We check that the return url matches a per-key regexp to prevent
 157                 // replay attacks (more exactly to force replay attacks to redirect
 158                 // the user to the real GroupeX website, which defeats the attack).
 159                 if (empty($returnurls) || @preg_match($returnurls, $gpex_url)) {
 160                     $returl = $gpex_url . gpex_make_params($gpex_challenge, $privkey, $datafields, $charset);
 161                     XDB::execute('UPDATE  group_auth
 162                                      SET  last_used = DATE(NOW())
 163                                    WHERE  name = {?}',
 164                                  $name);
 165                     http_redirect($returl);
 166                 } else if (S::admin()) {
 167                     $page->kill("La requête d'authentification a échouée (url de retour invalide).");
 168                 }
 169             }
 170         }
 171
 172         // Otherwise (if no valid request was found, or if the return URL is not
 173         // acceptable), the user is redirected back to our homepage.
 174         pl_redirect('/');
 175     }
 176
 177     function handler_admin_authgroupesx($page, $action = 'list', $id = null)
 178     {
 179         $page->setTitle('Administration - Auth groupes X');
 180         $page->assign('title', 'Gestion de l\'authentification centralisée');
 181         $table_editor = new PLTableEditor('admin/auth-groupes-x','group_auth','id');
 182         $table_editor->describe('name','nom',true);
 183         $table_editor->describe('privkey','clé privée',false, true);
 184         $table_editor->describe('datafields','champs renvoyés',true);
 185         $table_editor->describe('returnurls','urls de retour',true);
 186         $table_editor->describe('last_used', 'dernière utilisation', true);
 187         $table_editor->apply($page, $action, $id);
 188     }
 189 }
 190
 191 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8:
 192 ?>