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<?php
 define('AUTH_CALLBACK', 'authCallback');
 
 /**
 * Generates login forms and shows authentication messages to the user when needed.
 * This is where you can change the aspect of this forms. Also, if you want to log your
 * authentication trafic set $logging variable to true. and set the corresponding
 * variables according to http://www.php.net/error_log
 *
 * @version 2.4 pl3
 * @param $action        int, one of AUTH_NEED_LOGIN, AUTH_INVALID_USER, AUTH_EXPIRED,
 *                      AUTH_ACCESS_DENIED.
 * @param $message        string a message to show to the user.
 * @param $auth            object Auth.
 * @access public
 */
 function authCallback($action, $message = '', &$auth) {
 if(!isset($_GET)) {
 $_COOKIE = &$GLOBALS['HTTP_COOKIE_VARS'];
 $_ENV = &$GLOBALS['HTTP_ENV_VARS'];
 $_GET = &$GLOBALS['HTTP_GET_VARS'];
 $_POST = &$GLOBALS['HTTP_POST_VARS'];
 $_SERVER = &$GLOBALS['HTTP_SERVER_VARS'];
 $_SESSION = &$GLOBALS['HTTP_SESSION_VARS'];
 $_REQUEST = array_merge($_GET, $_POST, $_COOKIE);
 }
 
 // Configuration.
 $logging = false;
 $logType = 0;
 $logDest = '';
 $logHeaders = '';
 
 ?>
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 
 <html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 <title>Authentication.</title>
 <style type="text/css">
 /*<![CDATA[*/
 body {
 background-color: #FFF;
 font-family: Verdana, Helvetica, sans-serif;
 font-size: 10pt;
 }
 
 div, li, p, td, th {
 font-family: Verdana, Helvetica, sans-serif;
 font-size: 10pt;
 }
 
 .content{
 background-color: #EEE;
 border: 1px solid #CCC;
 width: 450px;
 }
 
 .content .title {
 background: white;
 border: 1px solid #CCC;
 color: #369;
 font-size: 12pt;
 font-weight: bold;
 padding: 10px;
 }
 
 .content th {
 background-color: #BDE;
 border: 1px solid #ABD;
 font-size: 12pt;
 font-wight: bold;
 }
 
 .content td {
 text-align:center;
 }
 
 .content .text {
 background-color: #DDD;
 border: 1px inset #CCC;
 font-size: 8pt;
 width: 200px;
 }
 
 .content .button {
 background-color: #DDD;
 border: 1px outset #CCC;
 font-size:8pt;
 padding: 2px 4px 2px 4px;
 }
 
 /*]]>*/
 </style>
 </head>
 <body>
 
 <table align="center" class="content" cellspacing="10">
 <tr>
 <td class="title" colspan="2"><?php echo $message; ?></td>
 </tr>
 <?php
 
 switch($action) {
 case AUTH_NEED_LOGIN:
 ?>
 <form action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>" method="post">
 <tr>
 <th>Username:</th>
 <td><input class="text" name="<?php echo $auth->_options['usernameField']; ?>" type="text" maxlength="32"/></td>
 <tr>
 <th>Password:</th>
 <td><input class="text" name="<?php echo $auth->_options['passwordField']; ?>" type="password"/></td>
 </tr>
 <tr>
 <td colspan="2">To access this zone you need to provide a valid username/password
 pair. If you lost your account info you can use our <a href="/lostpassword.php">
 reset password</a> form to access your account again.</td>
 </tr>
 <tr>
 <td colspan="2"><input class="button" type="submit" value="Login"/> <input class="button" onclick="history.go(-1);" type="button" value="Cancel"/></td>
 </tr>
 </form>
 <?php
 break;
 
 case AUTH_INVALID_USER:
 ?>
 <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
 <tr>
 <th>Username:</th>
 <td><input class="text" name="<?php echo $auth->_options['usernameField']; ?>" type="text" maxlength="32" /></td>
 </tr>
 <tr>
 <th>Password:</th>
 <td><input class="text" name="<?php echo $auth->_options['passwordField']; ?>" type="password" /></td>
 </tr>
 <tr>
 <td colspan="2">Your account doesn't exists. Please correct your information. If you lost your account info you can use our <a href="/lostpassword.php">reset password</a> form to access your account again.</td>
 </tr>
 <tr>
 <td colspan="2"><input class="button" type="submit" value="Login"/> <input class="button" onclick="history.go(-1);" type="button" value="Cancel"/></td>
 </tr>
 </form>
 <?php
 break;
 
 case AUTH_EXPIRED:
 ?>
 <tr>
 <td colspan="2">Your session just expired. Please login again.</td>
 </tr>
 <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
 <tr>
 <th>Username:</th>
 <td><input class="text" name="<?php echo $auth->_options['usernameField']; ?>"
 type="text" maxlength="32" /></td>
 </tr>
 <tr>
 <th>Password:</th>
 <td><input class="text" name="<?php echo $auth->_options['passwordField']; ?>"
 type="password" /></td>
 </tr>
 <tr>
 <td colspan="2">To access this zone you need to provide a valid
 username/password pair. If you lost your account info you can use our <a
 href="/lostpassword.php">reset password</a> form to access your account
 again.</td>
 </tr>
 <tr>
 <td colspan="2"><input class="button" type="submit" value="Login"/> <input
 class="button" onclick="history.go(-1);" type="button" value="Cancel"/></td>
 </tr>
 </form>
 <?php
 break;
 
 case AUTH_ACCESS_DENIED:
 default:
 ?>
 <tr>
 <td>Your don't have access to this zone. Please leave it now!.</td>
 </tr>
 <tr>
 <td><input class="button" onclick="history.go(-1);" type="button" value="Exit"/></td>
 </tr>
 <?php
 break;
 }
 ?>
 </table>
 </body>
 </html>
 <?php
 
 if($logging) {
 error_log("AUTH MESSAGE: $message", logType, $logDest,
 $logHeaders);
 }
 die();
 }
 
 ?>
 
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