/**
* 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'], $mybb->settings['maxnamelength']));
return false;
}
return true;
}
echo json_encode($lang->complex_password_fails);
} else {
// Return nothing but an OK password if passes regex
echo json_encode("true");
}
exit;
} else {
if ($mybb->input['action'] == "username_availability") {
if (!verify_post_check($mybb->get_input('my_post_key'), 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($username, false, false)) {
/**
* Checks for the length of a string, mb strings accounted for
*
* @param string The string to check the length of.
* @return int The length of the string.
*/
function my_strlen($string)
{
global $lang;
$string = preg_replace("#&\\#([0-9]+);#", "-", $string);
if (strtolower($lang->settings['charset']) == "utf-8") {
// Get rid of any excess RTL and LTR override for they are the workings of the devil
$string = str_replace(dec_to_utf8(8238), "", $string);
$string = str_replace(dec_to_utf8(8237), "", $string);
// Remove dodgy whitespaces
$string = str_replace(chr(0xca), "", $string);
}
$string = trim($string);
if (function_exists("mb_strlen")) {
$string_length = mb_strlen($string);
} else {
$string_length = strlen($string);
}
return $string_length;
}