/**
* Verifies if a username is valid or invalid.
*
* @param boolean True when valid, false when invalid.
*/
function verify_username()
{
global $mybb;
$username =& $this->data['username'];
require_once MYBB_ROOT . 'inc/functions_user.php';
// Fix bad characters
$username = trim_blank_chrs($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,}#", " ", $username);
// Check if the username is not empty.
if ($username == '') {
$this->set_error('missing_username');
return false;
}
// Check if the username belongs to the list of banned usernames.
if (is_banned_username($username, true)) {
$this->set_error('banned_username');
return false;
}
// Check for certain characters in username (<, >, &, commas and slashes)
if (strpos($username, "<") !== false || strpos($username, ">") !== false || strpos($username, "&") !== false || my_strpos($username, "\\") !== false || strpos($username, ";") !== false || strpos($username, ",") !== false || !validate_utf8_string($username, false, false)) {
$this->set_error("bad_characters_username");
return false;
}
// Check if the username is of the correct length.
if ($mybb->settings['maxnamelength'] != 0 && my_strlen($username) > $mybb->settings['maxnamelength'] || $mybb->settings['minnamelength'] != 0 && my_strlen($username) < $mybb->settings['minnamelength']) {
$this->set_error('invalid_username_length', array($mybb->settings['minnamelength'], $mybb->settings['maxnamelength']));
return false;
}
return true;
}
xmlhttp_error($lang->invalid_post_code);
}
require_once MYBB_ROOT . "inc/functions_user.php";
$username = $mybb->get_input('username');
// Fix bad characters
$username = trim_blank_chrs($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,}#", " ", $username);
header("Content-type: application/json; charset={$charset}");
if (empty($username)) {
echo json_encode($lang->banned_characters_username);
exit;
}
// Check if the username belongs to the list of banned usernames.
$banned_username = is_banned_username($username, true);
if ($banned_username) {
echo json_encode($lang->banned_username);
exit;
}
// Check for certain characters in username (<, >, &, and slashes)
if (strpos($username, "<") !== false || strpos($username, ">") !== false || strpos($username, "&") !== false || my_strpos($username, "\\") !== false || strpos($username, ";") !== false || strpos($username, ",") !== false || !validate_utf8_string($username, false, false)) {
echo json_encode($lang->banned_characters_username);
exit;
}
// Check if the username is actually already in use
$user = get_user_by_username($username);
$plugins->run_hooks("xmlhttp_username_availability");
if ($user['uid']) {
$lang->username_taken = $lang->sprintf($lang->username_taken, htmlspecialchars_uni($username));
echo json_encode($lang->username_taken);
