chamilo-lms/main/chat/chat_hidden.php

<?php
/* For licensing terms, see /license.txt */

/**
 *	Hidden frame that refreshes the visible frames when a modification occurs
 *
 *	@author Olivier Brouckaert
 *	@package chamilo.chat
 */

define('FRAME', 'hidden');

$language_file = array('chat');

require_once '../inc/global.inc.php';
require_once api_get_path(LIBRARY_PATH).'course.lib.php';
require_once api_get_path(LIBRARY_PATH).'groupmanager.lib.php';
require_once 'chat_functions.lib.php';

$tbl_user 				= Database::get_main_table(TABLE_MAIN_USER);
$tbl_chat_connected 	= Database::get_course_chat_connected_table();

$query = "SELECT username FROM $tbl_user WHERE user_id='".$_user['user_id']."'";
$result = Database::query($query);

list($pseudo_user) = Database::fetch_row($result);

$isAllowed = !(empty($pseudo_user) || !$_cid);
$isMaster = (bool)$is_courseAdmin;

/*if(!$isAllowed) {
	exit();
}*/

$date_now = date('Y-m-d');

$group_id = intval($_SESSION['_gid']);
$session_id = intval($_SESSION['id_session']);
$session_condition = api_get_session_condition($session_id);
$group_condition = " AND to_group_id = '$group_id'";

$extra_condition = '';
if (!empty($group_id)) {
	$extra_condition = $group_condition;
} else {
	$extra_condition = $session_condition;
}

// get chat path
$chat_path = '';
$document_path = api_get_path(SYS_COURSE_PATH).$_course['path'].'/document';
if (!empty($group_id)) {
	$group_info = GroupManager :: get_group_properties($group_id);
	$chat_path = $document_path.$group_info['directory'].'/chat_files/';
} else {
	$chat_path = $document_path.'/chat_files/';
}

// get chat file
$basename_chat = '';
if (!empty($group_id)) {
	$basename_chat = 'messages-'.$date_now.'_gid-'.$group_id;
} elseif (!empty($session_id)) {
	$basename_chat = 'messages-'.$date_now.'_sid-'.$session_id;
} else {
	$basename_chat = 'messages-'.$date_now;
}

$chat_size_old = intval($_POST['chat_size_old']);

$file = $chat_path.$basename_chat.'.log.html';
$chat_size_new = 0;
if (file_exists($file)) {
    $chat_size_new = filesize($file);
}

$sql = "SELECT user_id FROM $tbl_chat_connected WHERE user_id='".$_user['user_id']."' $extra_condition";
$result = Database::query($sql);

// The user_id exists so we must do an UPDATE and not a INSERT
$current_time = date('Y-m-d H:i:s');
if (Database::num_rows($result) == 0) {
	$query = "INSERT INTO $tbl_chat_connected(user_id,last_connection,session_id,to_group_id) VALUES('".$_user['user_id']."','$current_time','$session_id','$group_id')";
} else {
	$query = "UPDATE $tbl_chat_connected set last_connection='".$current_time."' WHERE user_id='".$_user['user_id']."' AND session_id='$session_id' AND to_group_id='$group_id'";
}

Database::query($query);

$query = "SELECT COUNT(user_id) FROM $tbl_chat_connected WHERE last_connection>'".date('Y-m-d H:i:s',time()-60*5)."' $extra_condition";
$result = Database::query($query);

$connected_old = intval($_POST['connected_old']);
list($connected_new) = Database::fetch_row($result);
/*disconnected user of chat*/
disconnect_user_of_chat ();
require 'header_frame.inc.php';

// Navigation menu
if (api_get_setting('show_navigation_menu') != 'false') {
   $course_id = api_get_course_id();
   if (!empty($course_id) && ($course_id != -1)) {
   		if (api_get_setting('show_navigation_menu') != 'icons') {
	    	echo '</div> <!-- end #center -->';
    		echo '</div> <!-- end #centerwrap -->';
		}
      	require_once api_get_path(INCLUDE_PATH).'tool_navigation_menu.inc.php';
      	show_navigation_menu();
   }
}
?>

<form name="formHidden" method="post" action="<?php echo api_get_self().'?cidReq='.$_GET['cidReq']; ?>">
<input type="hidden" name="chat_size_old" value="<?php echo $chat_size_new; ?>">
<input type="hidden" name="connected_old" value="<?php echo $connected_new; ?>">
</form>

<?php

if ($_SESSION["origin"] == 'whoisonline') {  //check if our target has denied our request or not
	$talk_to = $_SESSION["target"];
	$track_user_table = Database::get_main_table(TABLE_MAIN_USER);
	$sql = "select chatcall_text from $track_user_table where ( user_id = $talk_to )";
	$result = Database::query($sql);
	$row = Database::fetch_array($result);
	if ($row['chatcall_text'] == 'DENIED') {
		echo "<script language=\"javascript\" type=\"text/javascript\"> alert('".get_lang('ChatDenied')."'); </script>";
		$sql = "update $track_user_table set chatcall_user_id = '', chatcall_date = '', chatcall_text='' where (user_id = $talk_to)";
		$result = Database::query($sql);
	}
}

require 'footer_frame.inc.php';