class.xorg.auth.php

   1 <?php
   2
   3 if (!defined('DC_BLOG_ID')) {
   4   define('DC_BLOG_ID', $_SERVER['DC_BLOG_ID']);
   5 }
   6
   7 class xorgAuth extends dcAuth {
   8   public $xorg_infos = array('forlife' => null,
   9                              'prenom' => null,
  10                              'nom' => null,
  11                              'grpauth' => null,
  12                              'perms' => null);
  13   static public function behavior_coreBlogConstruct(&$blog) {
  14     global $core;
  15     $core->auth->sudo(array($core->auth, 'updateUserPerms'), $blog);
  16   }
  17
  18   public function __construct(&$core) {
  19     parent::__construct($core);
  20     $core->addBehavior('coreBlogConstruct', array('xorgAuth', 'behavior_coreBlogConstruct'));
  21   }
  22
  23   public function buildFromSession() {
  24     global $core;
  25     @header('Last-Modified:');
  26     if (!isset($core) || !isset($core->session)) {
  27       return;
  28     }
  29     if (!session_id()) {
  30       $core->session->start();
  31     }
  32     $_SESSION['sess_blog_id'] = $_SERVER['DC_BLOG_ID'];
  33     $user = @$_SESSION['auth-xorg'];
  34     if ($user && is_null($this->xorg_infos['forlife'])) {
  35       foreach ($this->xorg_infos as $key => $val) {
  36         $this->xorg_infos[$key] = $_SESSION['auth-xorg-' . $key];
  37       }
  38       $this->user_id = $user;
  39       $this->user_admin = ($_SESSION['auth-xorg-perms'] == 'admin');
  40       parent::checkUser($this->user_id);
  41       $core->getUserBlogs();
  42     }
  43   }
  44
  45   public function createUser() {
  46     global $core;
  47     if (!$core->userExists($_SESSION['auth-xorg'])) {
  48       $cur = new cursor($this->con, 'dc_user');
  49       $cur->user_id = $_SESSION['auth-xorg'];
  50       $cur->user_pwd = md5(rand());
  51       $cur->user_super = ($_SESSION['auth-xorg-perms'] == 'admin') ? '1' : '0';
  52       $cur->user_lang = 'fr';
  53       $cur->user_name = $_SESSION['auth-xorg-nom'];
  54       $cur->user_firstname = $_SESSION['auth-xorg-prenom'];
  55       $cur->user_displayname = $cur->user_firstname . ' ' . $cur->user_name;
  56       $cur->user_email = $_SESSION['auth-xorg'] . '@polytechnique.org';
  57       $defaults = $core->userDefaults();
  58       $defaults['post_xorg_perms'] = 'public';
  59       $cur->user_options = $defaults;
  60       $cur->user_lang = 'fr';
  61       $cur->user_tz = 'Europe/Paris';
  62       $cur->user_default_blog = $_SERVER['DC_BLOG_ID'];
  63       $core->addUser($cur);
  64     }
  65   }
  66
  67   public function updateUserPerms(&$blog) {
  68     global $core;
  69     $this->buildFromSession();
  70     if (!isset($_SESSION['auth-xorg'])) {
  71       return;
  72     }
  73     $type = $blog->settings->get('xorg_blog_type');
  74     $owner = $blog->settings->get('xorg_blog_owner');
  75     $level = $this->xorg_infos['grpauth'];
  76     $rec = $core->getUser($this->user_id);
  77     $wasAdmin = $rec->f('user_super');
  78     $isAdmin = $this->xorg_infos['perms'] == 'admin';
  79     if (($wasAdmin && !$isAdmin) || (!$wasAdmin && $isAdmin)) {
  80       $cur = new cursor($this->con, 'dc_user');
  81       $cur->user_super = $isAdmin ? '1' : '0';
  82       $core->updUser($this->user_id, $cur);
  83     }
  84     if ($_SESSION['xorg-group'] != $owner) {
  85       $this->killSession();
  86       return;
  87     }
  88     if (($type == 'group-admin' || $type == 'group-member') && $level == 'admin') {
  89       $perms = array('usage' => true,
  90                      'contentadmin' => true,
  91                      'admin' => true);
  92     } else if ($type == 'group-member' && $level == 'membre') {
  93       $perms = array('usage' => true);
  94     } else if ($type == 'user' && $owner == $this->xorg_infos['forlife']) {
  95       $perms = array('usage' => true,
  96                      'contentadmin' => true,
  97                      'admin' => true);
  98     } else if ($type != 'user') {
  99       $perms = array();
 100     } else {
 101       return;
 102     }
 103     $core->setUserBlogPermissions($_SESSION['auth-xorg'],
 104                                   $blog->id,
 105                                   $perms);
 106   }
 107
 108
 109   /** Xorg SSO API */
 110
 111   public function callXorg($path = null) {
 112     $this->buildFromSession();
 113     if (@$_SESSION['auth-xorg']) {
 114       return true;
 115     }
 116     global $core;
 117     if (!session_id()) {
 118       $core->session->start();
 119     }
 120     if (is_null($path)) {
 121       $path = @$_SERVER['PATH_INFO'];
 122     }
 123     $_SESSION["auth-x-challenge"] = md5(uniqid(rand(), 1));
 124     $_SESSION['xorg-group'] = $core->blog->settings->get('xorg_blog_owner');
 125     $url = "https://www.polytechnique.org/auth-groupex/utf8";
 126     $url .= "?session=" . session_id();
 127     $url .= "&challenge=" . $_SESSION["auth-x-challenge"];
 128     $url .= "&pass=" . md5($_SESSION["auth-x-challenge"] . XORG_AUTH_KEY);
 129     $type = $core->blog->settings->get('xorg_blog_type');
 130     if ($type == 'group-member' || $type == 'group-admin') {
 131       $url .= '&group=' . $core->blog->settings->get('xorg_blog_owner');
 132     }
 133     $url .= "&url=" . urlencode($core->blog->url . "auth/XorgReturn?path=" . $path);
 134     session_write_close();
 135     header("Location: $url");
 136     exit;
 137   }
 138
 139   public function returnXorg() {
 140     if (!isset($_GET['auth'])) {
 141       return false;
 142     }
 143     $params = '';
 144     global $core;
 145     $_COOKIE[DC_SESSION_NAME] = $_GET['PHPSESSID'];
 146     unset($_GET['PHPSESSID']);
 147     if (!session_id()) {
 148       $core->session->start();
 149     }
 150     foreach($this->xorg_infos as $key => $val) {
 151       if(!isset($_GET[$key])) {
 152         return false;
 153       }
 154       $_SESSION['auth-xorg-' . $key] = $_GET[$key];
 155       $params .= $_GET[$key];
 156     }
 157     if (md5('1' . $_SESSION['auth-x-challenge'] . XORG_AUTH_KEY . $params . '1') == $_GET['auth']) {
 158       unset($_GET['auth']);
 159       $_SESSION['sess_user_id'] = $_SESSION['auth-xorg'] = $_GET['forlife'];
 160                   $_SESSION['sess_browser_uid'] = http::browserUID(DC_MASTER_KEY);
 161       $_SESSION['sess_blog_id'] = 'default';
 162       $this->sudo(array($this, 'createUser'));
 163       $path = $_GET['path'];
 164       header('Location: ' . $core->blog->url . $_GET['path']);
 165       exit;
 166     }
 167     unset($_SESSION['auth-xorg']);
 168     unset($_SESSION['sess_user_id']);
 169     unset($_GET['auth']);
 170     echo "Failed !!!";
 171     return false;
 172   }
 173
 174   public function killSession() {
 175     global $core;
 176     if (!session_id()) {
 177       $core->session->start();
 178     }
 179     $core->session->destroy();
 180     if (!isset($core->blog)) {
 181       $blog = $core->getBlog(DC_BLOG_ID);
 182     } else {
 183       $blog = $core->blog;
 184     }
 185     $url = @$blog->url;
 186     if (!$url) {
 187       $url = $blog->f('blog_url');
 188     }
 189
 190     header('Location: ' . $url);
 191     exit;
 192   }
 193
 194
 195   /** Dotclear dcAuth API */
 196
 197   public function checkUser($user_id, $pwd = null, $user_key = null) {
 198     return $this->callXorg();
 199   }
 200
 201   public function check($permissions, $blog_id) {
 202     $this->buildFromSession();
 203     return parent::check($permissions, $blog_id);
 204   }
 205
 206   public function checkPassword($pwd) {
 207     $this->buildFromSession();
 208     return !empty($this->user_id);
 209   }
 210
 211   public function allowPassChange() {
 212     return false;
 213   }
 214
 215   public function userID() {
 216     $this->buildFromSession();
 217     $isadmin = preg_match('@/admin/[^/]+\.php$@i', $_SERVER['SCRIPT_FILENAME']);
 218     if (!$isadmin) {
 219       return null;
 220     }
 221     return parent::userID();
 222   }
 223
 224   public function getPermissions() {
 225     $this->buildFromSession();
 226     return parent::getPermissions();
 227   }
 228
 229   public function getInfo($n) {
 230     $this->buildFromSession();
 231     if ($n == 'xorg_group_member') {
 232       global $core;
 233       if ($core->blog->settings('xorg_blog_owner') != $_SESSION['xorg-group']) {
 234         return false;
 235       }
 236       $perm = $this->xorg_infos['grpauth'];
 237       return $this->isSuperAdmin() || $perm == 'admin' || $perm == 'membre';
 238     }
 239     return parent::getInfo($n);
 240   }
 241
 242   public function getOption($n) {
 243     $this->buildFromSession();
 244     return parent::getOption($n);
 245   }
 246
 247   public function getOptions() {
 248     $this->buildFromSession();
 249     return parent::getOptions();
 250   }
 251
 252   public function authForm() {
 253     global $core;
 254     if (!isset($core->blog)) {
 255       $blog = @$core->getBlog(DC_BLOG_ID);
 256     } else {
 257       $blog = $core->blog;
 258     }
 259     $path = @$blog->url;
 260     if (!$path) {
 261       $path = $blog->f('blog_url');
 262     }
 263
 264     return '<fieldset>'.
 265       '<p><a href="' . $path . 'auth/Xorg?path=/admin/index.php">Via Polytechnique.org</a></p>' .
 266       '</fieldset>'.
 267       '<p>'.__('You must accept cookies in order to use the private area.').'</p>';
 268   }
 269 }
 270
 271 ?>