source: tags/release-1_5_0/include/user.inc.php @ 27601

<?php
// +-----------------------------------------------------------------------+
// | PhpWebGallery - a PHP based picture gallery                           |
// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
// +-----------------------------------------------------------------------+
// | branch        : BSF (Best So Far)
// | file          : $RCSfile$
// | last update   : $Date: 2005-08-17 14:25:38 +0000 (Wed, 17 Aug 2005) $
// | last modifier : $Author: plg $
// | revision      : $Revision: 817 $
// +-----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify  |
// | it under the terms of the GNU General Public License as published by  |
// | the Free Software Foundation                                          |
// |                                                                       |
// | This program is distributed in the hope that it will be useful, but   |
// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
// | General Public License for more details.                              |
// |                                                                       |
// | You should have received a copy of the GNU General Public License     |
// | along with this program; if not, write to the Free Software           |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA.                                                                  |
// +-----------------------------------------------------------------------+

// retrieving connected user informations
if (isset($_COOKIE['id']))
{
  $session_id = $_COOKIE['id'];
  $user['has_cookie'] = true;
}
else if (isset($_GET['id']))
{
  $session_id = $_GET['id'];
  $user['has_cookie'] = false;
}
else
{
  $user['has_cookie'] = false;
}

if (isset($session_id)
    and ereg("^[0-9a-zA-Z]{".$conf['session_id_size']."}$", $session_id))
{
  $page['session_id'] = $session_id;
  $query = '
SELECT user_id,expiration,NOW() AS now
  FROM '.SESSIONS_TABLE.'
  WHERE id = \''.$page['session_id'].'\'
;';
  $result = pwg_query($query);
  if (mysql_num_rows($result) > 0)
  {
    $row = mysql_fetch_array($result);
    if (strnatcmp($row['expiration'], $row['now']) < 0)
    {
      // deletion of the session from the database, because it is
      // out-of-date
      $delete_query = '
DELETE FROM '.SESSIONS_TABLE.'
  WHERE id = \''.$page['session_id'].'\'
;';
      pwg_query($delete_query);
    }
    else
    {
      $user['id'] = $row['user_id'];
      $user['is_the_guest'] = false;
    }
  }
}
if (!isset($user['id']))
{
  $user['id'] = $conf['guest_id'];
  $user['is_the_guest'] = true;
}

// using Apache authentication override the above user search
if ($conf['apache_authentication'] and isset($_SERVER['REMOTE_USER']))
{
  if (!($user['id'] = get_userid($_SERVER['REMOTE_USER'])))
  {
    register_user($_SERVER['REMOTE_USER'], '', '');
    $user['id'] = get_userid($_SERVER['REMOTE_USER']);
  }
  
  $user['is_the_guest'] = false;
}

$use_cache = (defined('IN_ADMIN') and IN_ADMIN) ? false : true;
$user = array_merge($user, getuserdata($user['id'], $use_cache));

// properties of user guest are found in the configuration
if ($user['is_the_guest'])
{
  $user['template'] = $conf['default_template'];
  $user['nb_image_line'] = $conf['nb_image_line'];
  $user['nb_line_page'] = $conf['nb_line_page'];
  $user['language'] = $conf['default_language'];
  $user['maxwidth'] = $conf['default_maxwidth'];
  $user['maxheight'] = $conf['default_maxheight'];
  $user['recent_period'] = $conf['recent_period'];
  $user['expand'] = $conf['auto_expand'];
  $user['show_nb_comments'] = $conf['show_nb_comments'];
}

// calculation of the number of picture to display per page
$user['nb_image_page'] = $user['nb_image_line'] * $user['nb_line_page'];
?>