Make a new file in the root directory of mybb called:
xmlhttp.php
Then open it and paste the below in it and save.
<?php
/**
* MyBB 1.6
* Copyright 2010 MyBB Group, All Rights Reserved
*
* Website: http://mybb.com
* License: http://mybb.com/about/license
*
* $Id$
*/
/**
* The deal with this file is that it handles all of the XML HTTP Requests for MyBB.
*
* It contains a stripped down version of the MyBB core which does not load things
* such as themes, who's online data, all of the language packs and more.
*
* This is done to make response times when using XML HTTP Requests faster and
* less intense on the server.
*/
define("IN_MYBB", 1);
// We don't want visits here showing up on the Who's Online
define("NO_ONLINE", 1);
define('THIS_SCRIPT', 'xmlhttp.php');
// Load MyBB core files
require_once dirname(__FILE__)."/inc/init.php";
$shutdown_queries = array();
// Load some of the stock caches we'll be using.
$groupscache = $cache->read("usergroups");
if(!is_array($groupscache))
{
$cache->update_usergroups();
$groupscache = $cache->read("usergroups");
}
// Send no cache headers
header("Expires: Sat, 1 Jan 2000 01:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-cache, must-revalidate");
header("Pragma: no-cache");
// Create the session
require_once MYBB_ROOT."inc/class_session.php";
$session = new session;
$session->init();
// Load the language we'll be using
if(!isset($mybb->settings['bblanguage']))
{
$mybb->settings['bblanguage'] = "english";
}
if(isset($mybb->user['language']) && $lang->language_exists($mybb->user['language']))
{
$mybb->settings['bblanguage'] = $mybb->user['language'];
}
$lang->set_language($mybb->settings['bblanguage']);
if(function_exists('mb_internal_encoding') && !empty($lang->settings['charset']))
{
@mb_internal_encoding($lang->settings['charset']);
}
// Load the language pack for this file.
if(isset($mybb->user['style']) && intval($mybb->user['style']) != 0)
{
$loadstyle = "tid='".$mybb->user['style']."'";
}
else
{
$loadstyle = "def=1";
}
// Load basic theme information that we could be needing.
$query = $db->simple_select("themes", "name, tid, properties", $loadstyle);
$theme = $db->fetch_array($query);
$theme = @array_merge($theme, unserialize($theme['properties']));
// Set the appropriate image language directory for this theme.
if(!empty($mybb->user['language']) && is_dir($theme['imgdir'].'/'.$mybb->user['language']))
{
$theme['imglangdir'] = $theme['imgdir'].'/'.$mybb->user['language'];
}
else
{
if(is_dir($theme['imgdir'].'/'.$mybb->settings['bblanguage']))
{
$theme['imglangdir'] = $theme['imgdir'].'/'.$mybb->settings['bblanguage'];
}
else
{
$theme['imglangdir'] = $theme['imgdir'];
}
}
$templatelist = "postbit_editedby,xmlhttp_inline_post_editor,xmlhttp_buddyselect_online,xmlhttp_buddyselect_offline,xmlhttp_buddyselect";
$templates->cache($db->escape_string($templatelist));
if($lang->settings['charset'])
{
$charset = $lang->settings['charset'];
}
// If not, revert to UTF-8
else
{
$charset = "UTF-8";
}
$lang->load("global");
$lang->load("xmlhttp");
$plugins->run_hooks("xmlhttp");
// Fetch a list of usernames beginning with a certain string (used for auto completion)
if($mybb->input['action'] == "get_users")
{
// If the string is less than 3 characters, quit.
if(my_strlen($mybb->input['query']) < 3)
{
exit;
}
// Send our headers.
header("Content-type: text/plain; charset={$charset}");
// Query for any matching users.
$query_options = array(
"order_by" => "username",
"order_dir" => "asc",
"limit_start" => 0,
"limit" => 15
);
$query = $db->simple_select("users", "uid, username", "username LIKE '".$db->escape_string_like($mybb->input['query'])."%'", $query_options);
while($user = $db->fetch_array($query))
{
$user['username'] = htmlspecialchars_uni($user['username']);
// Send the result to the browser for this user.
echo "<div>\n";
echo "<span class=\"username\">{$user['username']}</span>\n";
echo "</div>\n";
}
}
else if($mybb->input['action'] == "get_usergroups")
{
// If the string is less than 3 characters, quit.
if(my_strlen($mybb->input['query']) < 3)
{
exit;
}
// Send our headers.
header("Content-type: text/plain; charset={$charset}");
// Sanitize the input.
$mybb->input['query'] = str_replace(array("%", "_"), array("\\%", "\\_"), $mybb->input['query']);
// Query for any matching usergroups.
$query_options = array(
"order_by" => "title",
"order_dir" => "asc",
"limit_start" => 0,
"limit" => 15
);
$query = $db->simple_select("usergroups", "gid, title", "title LIKE '".$db->escape_string($mybb->input['query'])."%'", $query_options);
while($group = $db->fetch_array($query))
{
$group['title'] = htmlspecialchars_uni($group['title']);
// Send the result to the browser for this usergroup.
echo "<div>\n";
echo "<span class=\"usergroup\">{$group['title']} ({$lang->usergroup} {$group['gid']})</span>\n";
echo "</div>\n";
}
}
// This action provides editing of thread/post subjects from within their respective list pages.
else if($mybb->input['action'] == "edit_subject" && $mybb->request_method == "post")
{
// Verify POST request
if(!verify_post_check($mybb->input['my_post_key'], true))
{
xmlhttp_error($lang->invalid_post_code);
}
// Editing a post subject.
if($mybb->input['pid'])
{
// Fetch the post from the database.
$post = get_post($mybb->input['pid']);
// No result, die.
if(!$post['pid'])
{
xmlhttp_error($lang->post_doesnt_exist);
}
// Fetch the thread associated with this post.
$thread = get_thread($post['tid']);
}
// We're editing a thread subject.
else if($mybb->input['tid'])
{
// Fetch the thread.
$thread = get_thread($mybb->input['tid']);
// Fetch some of the information from the first post of this thread.
$query_options = array(
"order_by" => "dateline",
"order_dir" => "asc",
);
$query = $db->simple_select("posts", "pid,uid,dateline", "tid='".$thread['tid']."'", $query_options);
$post = $db->fetch_array($query);
}
// Fetch the specific forum this thread/post is in.
$forum = get_forum($thread['fid']);
// Missing thread, invalid forum? Error.
if(!$thread['tid'] || !$forum['fid'] || $forum['type'] != "f")
{
xmlhttp_error($lang->thread_doesnt_exist);
}
// Fetch forum permissions.
$forumpermissions = forum_permissions($forum['fid']);
// If this user is not a moderator with "caneditposts" permissions.
if(!is_moderator($forum['fid'], "caneditposts"))
{
// Thread is closed - no editing allowed.
if($thread['closed'] == 1)
{
xmlhttp_error($lang->thread_closed_edit_subjects);
}
// Forum is not open, user doesn't have permission to edit, or author doesn't match this user - don't allow editing.
else if($forum['open'] == 0 || $forumpermissions['caneditposts'] == 0 || $mybb->user['uid'] != $post['uid'] || $mybb->user['uid'] == 0)
{
xmlhttp_error($lang->no_permission_edit_subject);
}
// If we're past the edit time limit - don't allow editing.
else if($mybb->settings['edittimelimit'] != 0 && $post['dateline'] < (TIME_NOW-($mybb->settings['edittimelimit']*60)))
{
$lang->edit_time_limit = $lang->sprintf($lang->edit_time_limit, $mybb->settings['edittimelimit']);
xmlhttp_error($lang->edit_time_limit);
}
$ismod = false;
}
else
{
$ismod = true;
}
$subject = $mybb->input['value'];
if(my_strtolower($charset) != "utf-8")
{
if(function_exists("iconv"))
{
$subject = iconv($charset, "UTF-8//IGNORE", $subject);
}
else if(function_exists("mb_convert_encoding"))
{
$subject = @mb_convert_encoding($subject, $charset, "UTF-8");
}
else if(my_strtolower($charset) == "iso-8859-1")
{
$subject = utf8_decode($subject);
}
}
// Set up posthandler.
require_once MYBB_ROOT."inc/datahandlers/post.php";
$posthandler = new PostDataHandler("update");
$posthandler->action = "post";
// Set the post data that came from the input to the $post array.
$updatepost = array(
"pid" => $post['pid'],
"tid" => $thread['tid'],
"subject" => $subject,
"edit_uid" => $mybb->user['uid']
);
$posthandler->set_data($updatepost);
// Now let the post handler do all the hard work.
if(!$posthandler->validate_post())
{
$post_errors = $posthandler->get_friendly_errors();
$errors = implode("\n\n", $post_errors);
xmlhttp_error($errors);
}
// No errors were found, we can call the update method.
else
{
$posthandler->update_post();
if($ismod == true)
{
$modlogdata = array(
"tid" => $thread['tid'],
"pid" => $post['pid'],
"fid" => $forum['fid']
);
log_moderator_action($modlogdata, $lang->edited_post);
}
}
require_once MYBB_ROOT."inc/class_parser.php";
$parser = new postParser;
// Send our headers.
header("Content-type: text/plain; charset={$charset}");
$mybb->input['value'] = $parser->parse_badwords($mybb->input['value']);
// Spit the subject back to the browser.
echo substr($mybb->input['value'], 0, 120); // 120 is the varchar length for the subject column
// Close the connection.
exit;
}
else if($mybb->input['action'] == "edit_post")
{
// Fetch the post from the database.
$post = get_post($mybb->input['pid']);
// No result, die.
if(!$post['pid'])
{
xmlhttp_error($lang->post_doesnt_exist);
}
// Fetch the thread associated with this post.
$thread = get_thread($post['tid']);
// Fetch the specific forum this thread/post is in.
$forum = get_forum($thread['fid']);
// Missing thread, invalid forum? Error.
if(!$thread['tid'] || !$forum['fid'] || $forum['type'] != "f")
{
xmlhttp_error($lang->thread_doesnt_exist);
}
// Fetch forum permissions.
$forumpermissions = forum_permissions($forum['fid']);
// If this user is not a moderator with "caneditposts" permissions.
if(!is_moderator($forum['fid'], "caneditposts"))
{
// Thread is closed - no editing allowed.
if($thread['closed'] == 1)
{
xmlhttp_error($lang->thread_closed_edit_message);
}
// Forum is not open, user doesn't have permission to edit, or author doesn't match this user - don't allow editing.
else if($forum['open'] == 0 || $forumpermissions['caneditposts'] == 0 || $mybb->user['uid'] != $post['uid'] || $mybb->user['uid'] == 0 || $mybb->user['suspendposting'] == 1)
{
xmlhttp_error($lang->no_permission_edit_post);
}
// If we're past the edit time limit - don't allow editing.
else if($mybb->settings['edittimelimit'] != 0 && $post['dateline'] < (TIME_NOW-($mybb->settings['edittimelimit']*60)))
{
$lang->edit_time_limit = $lang->sprintf($lang->edit_time_limit, $mybb->settings['edittimelimit']);
xmlhttp_error($lang->edit_time_limit);
}
// User can't edit unapproved post
if($post['visible'] == 0)
{
xmlhttp_error($lang->post_moderation);
}
// Forum is closed - no editing allowed
if($forum['open'] == 0)
{
xmlhttp_error($lang->no_permission_edit_post);
}
}
if($mybb->input['do'] == "get_post")
{
// Send our headers.
header("Content-type: text/xml; charset={$charset}");
$post['message'] = htmlspecialchars_uni($post['message']);
// Send the contents of the post.
eval("\$inline_editor = \"".$templates->get("xmlhttp_inline_post_editor")."\";");
echo "<?xml version=\"1.0\" encoding=\"{$charset}\"?".">";
echo "<form>".$inline_editor."</form>";
exit;
}
else if($mybb->input['do'] == "update_post")
{
// Verify POST request
if(!verify_post_check($mybb->input['my_post_key'], true))
{
xmlhttp_error($lang->invalid_post_code);
}
$message = (string)$mybb->input['value'];
if(my_strtolower($charset) != "utf-8")
{
if(function_exists("iconv"))
{
$message = iconv($charset, "UTF-8//IGNORE", $message);
}
else if(function_exists("mb_convert_encoding"))
{
$message = @mb_convert_encoding($message, $charset, "UTF-8");
}
else if(my_strtolower($charset) == "iso-8859-1")
{
$message = utf8_decode($message);
}
}
// Set up posthandler.
require_once MYBB_ROOT."inc/datahandlers/post.php";
$posthandler = new PostDataHandler("update");
$posthandler->action = "post";
// Set the post data that came from the input to the $post array.
$updatepost = array(
"pid" => $mybb->input['pid'],
"message" => $message,
"edit_uid" => $mybb->user['uid']
);
$posthandler->set_data($updatepost);
// Now let the post handler do all the hard work.
if(!$posthandler->validate_post())
{
$post_errors = $posthandler->get_friendly_errors();
$errors = implode("\n\n", $post_errors);
xmlhttp_error($errors);
}
// No errors were found, we can call the update method.
else
{
$postinfo = $posthandler->update_post();
$visible = $postinfo['visible'];
if($visible == 0 && !is_moderator($post['fid']))
{
echo "<p>\n";
echo $lang->post_moderation;
echo "</p>\n";
exit;
}
}
require_once MYBB_ROOT."inc/class_parser.php";
$parser = new postParser;
$parser_options = array(
"allow_html" => $forum['allowhtml'],
"allow_mycode" => $forum['allowmycode'],
"allow_smilies" => $forum['allowsmilies'],
"allow_imgcode" => $forum['allowimgcode'],
"allow_videocode" => $forum['allowvideocode'],
"me_username" => $post['username'],
"filter_badwords" => 1
);
if($post['smilieoff'] == 1)
{
$parser_options['allow_smilies'] = 0;
}
$post['message'] = $parser->parse_message($message, $parser_options);
// Now lets fetch all of the attachments for these posts.
$query = $db->simple_select("attachments", "*", "pid='{$post['pid']}'");
while($attachment = $db->fetch_array($query))
{
$attachcache[$attachment['pid']][$attachment['aid']] = $attachment;
}
require_once MYBB_ROOT."inc/functions_post.php";
get_post_attachments($post['pid'], $post);
// Figure out if we need to show an "edited by" message
// Only show if at least one of "showeditedby" or "showeditedbyadmin" is enabled
if($mybb->settings['showeditedby'] != 0 && $mybb->settings['showeditedbyadmin'] != 0)
{
$post['editdate'] = my_date($mybb->settings['dateformat'], TIME_NOW);
$post['edittime'] = my_date($mybb->settings['timeformat'], TIME_NOW);
$post['editnote'] = $lang->sprintf($lang->postbit_edited, $post['editdate'], $post['edittime']);
$post['editedprofilelink'] = build_profile_link($mybb->user['username'], $mybb->user['uid']);
eval("\$editedmsg = \"".$templates->get("postbit_editedby")."\";");
}
// Send our headers.
header("Content-type: text/plain; charset={$charset}");
echo $post['message']."\n";
if($editedmsg)
{
echo str_replace(array("\r", "\n"), "", "<editedmsg>{$editedmsg}</editedmsg>");
}
}
}
// Fetch the list of multiquoted posts which are not in a specific thread
else if($mybb->input['action'] == "get_multiquoted")
{
// If the cookie does not exist, exit
if(!array_key_exists("multiquote", $mybb->cookies))
{
exit;
}
// Divide up the cookie using our delimeter
$multiquoted = explode("|", $mybb->cookies['multiquote']);
// No values - exit
if(!is_array($multiquoted))
{
exit;
}
// Loop through each post ID and sanitize it before querying
foreach($multiquoted as $post)
{
$quoted_posts[$post] = intval($post);
}
// Join the post IDs back together
$quoted_posts = implode(",", $quoted_posts);
// Fetch unviewable forums
$unviewable_forums = get_unviewable_forums();
if($unviewable_forums)
{
$unviewable_forums = "AND t.fid NOT IN ({$unviewable_forums})";
}
$message = '';
// Are we loading all quoted posts or only those not in the current thread?
if(!$mybb->input['load_all'])
{
$from_tid = "p.tid != '".intval($mybb->input['tid'])."' AND ";
}
else
{
$from_tid = '';
}
require_once MYBB_ROOT."inc/class_parser.php";
$parser = new postParser;
require_once MYBB_ROOT."inc/functions_posting.php";
// Query for any posts in the list which are not within the specified thread
$query = $db->query("
SELECT p.subject, p.message, p.pid, p.tid, p.username, p.dateline, t.fid, p.visible, u.username AS userusername
FROM ".TABLE_PREFIX."posts p
LEFT JOIN ".TABLE_PREFIX."threads t ON (t.tid=p.tid)
LEFT JOIN ".TABLE_PREFIX."users u ON (u.uid=p.uid)
WHERE {$from_tid}p.pid IN ($quoted_posts) {$unviewable_forums}
ORDER BY p.dateline
");
while($quoted_post = $db->fetch_array($query))
{
if(!is_moderator($quoted_post['fid']) && $quoted_post['visible'] == 0)
{
continue;
}
$message .= parse_quoted_message($quoted_post, false);
}
if($mybb->settings['maxquotedepth'] != '0')
{
$message = remove_message_quotes($message);
}
// Send our headers.
header("Content-type: text/plain; charset={$charset}");
echo $message;
exit;
}
else if($mybb->input['action'] == "refresh_captcha")
{
$imagehash = $db->escape_string($mybb->input['imagehash']);
$query = $db->simple_select("captcha", "dateline", "imagehash='$imagehash'");
if($db->num_rows($query) == 0)
{
xmlhttp_error($lang->captcha_not_exists);
}
$db->delete_query("captcha", "imagehash='$imagehash'");
$randomstr = random_str(5);
$imagehash = md5(random_str(12));
$regimagearray = array(
"imagehash" => $imagehash,
"imagestring" => $randomstr,
"dateline" => TIME_NOW
);
$db->insert_query("captcha", $regimagearray);
header("Content-type: text/plain; charset={$charset}");
echo $imagehash;
}
else if($mybb->input['action'] == "validate_captcha")
{
header("Content-type: text/xml; charset={$charset}");
$imagehash = $db->escape_string($mybb->input['imagehash']);
$query = $db->simple_select("captcha", "imagestring", "imagehash='$imagehash'");
if($db->num_rows($query) == 0)
{
echo "<fail>{$lang->captcha_valid_not_exists}</fail>";
exit;
}
$imagestring = $db->fetch_field($query, 'imagestring');
if(my_strtolower($imagestring) == my_strtolower($mybb->input['value']))
{
echo "<success>{$lang->captcha_matches}</success>";
exit;
}
else
{
echo "<fail>{$lang->captcha_does_not_match}</fail>";
exit;
}
}
else if($mybb->input['action'] == "complex_password")
{
$password = trim($mybb->input['value']);
$password = str_replace(array(unichr(160), unichr(173), unichr(0xCA), dec_to_utf8(8238), dec_to_utf8(8237), dec_to_utf8(8203)), array(" ", "-", "", "", "", ""), $password);
header("Content-type: text/xml; charset={$charset}");
if(!preg_match("/^.*(?=.{".$mybb->settings['minpasswordlength'].",})(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).*$/", $password))
{
echo "<fail>{$lang->complex_password_fails}</fail>";
}
else
{
// Return nothing but an OK password if passes regex
echo "<success></success>";
}
exit;
}
else if($mybb->input['action'] == "username_availability")
{
if(!verify_post_check($mybb->input['my_post_key'], true))
{
xmlhttp_error($lang->invalid_post_code);
}
require_once MYBB_ROOT."inc/functions_user.php";
$username = $mybb->input['value'];
// Fix bad characters
$username = trim($username);
$username = str_replace(array(unichr(160), unichr(173), unichr(0xCA), dec_to_utf8(8238), dec_to_utf8(8237), dec_to_utf8(8203)), array(" ", "-", "", "", "", ""), $username);
// Remove multiple spaces from the username
$username = preg_replace("#\s{2,}#", " ", $username);
header("Content-type: text/xml; charset={$charset}");
if(empty($username))
{
echo "<fail>{$lang->banned_characters_username}</fail>";
exit;
}
// Check if the username belongs to the list of banned usernames.
$banned_username = is_banned_username($username, true);
if($banned_username)
{
echo "<fail>{$lang->banned_username}</fail>";
exit;
}
// Check for certain characters in username (<, >, &, and slashes)
if(strpos($username, "<") !== false || strpos($username, ">") !== false || strpos($username, "&") !== false || my_strpos($username, "\\") !== false || strpos($username, ";") !== false || !validate_utf8_string($username, false, false))
{
echo "<fail>{$lang->banned_characters_username}</fail>";
exit;
}
// Check if the username is actually already in use
$query = $db->simple_select("users", "uid", "LOWER(username)='".$db->escape_string(my_strtolower($username))."'");
$user = $db->fetch_array($query);
if($user['uid'])
{
$lang->username_taken = $lang->sprintf($lang->username_taken, htmlspecialchars_uni($username));
echo "<fail>{$lang->username_taken}</fail>";
exit;
}
else
{
$lang->username_available = $lang->sprintf($lang->username_available, htmlspecialchars_uni($username));
echo "<success>{$lang->username_available}</success>";
exit;
}
}
else if($mybb->input['action'] == "username_exists")
{
if(!verify_post_check($mybb->input['my_post_key'], true))
{
xmlhttp_error($lang->invalid_post_code);
}
require_once MYBB_ROOT."inc/functions_user.php";
$username = $mybb->input['value'];
header("Content-type: text/xml; charset={$charset}");
if(!trim($username))
{
echo "<success></success>";
exit;
}
// Check if the username actually exists
$query = $db->simple_select("users", "uid", "LOWER(username)='".$db->escape_string(my_strtolower($username))."'");
$user = $db->fetch_array($query);
if($user['uid'])
{
$lang->valid_username = $lang->sprintf($lang->valid_username, htmlspecialchars_uni($username));
echo "<success>{$lang->valid_username}</success>";
exit;
}
else
{
$lang->invalid_username = htmlspecialchars_uni($lang->sprintf($lang->invalid_username, htmlspecialchars_uni($username)));
echo "<fail>{$lang->invalid_username}</fail>";
exit;
}
}
else if($mybb->input['action'] == "get_buddyselect")
{
// Send our headers.
header("Content-type: text/plain; charset={$charset}");
if($mybb->user['buddylist'] != "")
{
$query_options = array(
"order_by" => "username",
"order_dir" => "asc"
);
$timecut = TIME_NOW - $mybb->settings['wolcutoff'];
$query = $db->simple_select("users", "uid, username, usergroup, displaygroup, lastactive, lastvisit, invisible", "uid IN ({$mybb->user['buddylist']})", $query_options);
$online = array();
$offline = array();
while($buddy = $db->fetch_array($query))
{
$buddy_name = format_name($buddy['username'], $buddy['usergroup'], $buddy['displaygroup']);
$profile_link = build_profile_link($buddy_name, $buddy['uid'], '_blank');
if($buddy['lastactive'] > $timecut && ($buddy['invisible'] == 0 || $mybb->user['usergroup'] == 4) && $buddy['lastvisit'] != $buddy['lastactive'])
{
eval("\$online[] = \"".$templates->get("xmlhttp_buddyselect_online")."\";");
}
else
{
eval("\$offline[] = \"".$templates->get("xmlhttp_buddyselect_offline")."\";");
}
}
$online = implode("", $online);
$offline = implode("", $offline);
eval("\$buddy_select = \"".$templates->get("xmlhttp_buddyselect")."\";");
echo $buddy_select;
}
else
{
xmlhttp_error($lang->buddylist_error);
}
}
/**
* Spits an XML Http based error message back to the browser
*
* @param string The message to send back.
*/
function xmlhttp_error($message)
{
global $charset;
// Send our headers.
header("Content-type: text/xml; charset={$charset}");
// Send the error message.
echo "<error>".$message."</error>";
// Exit
exit;
}
?>