/**
* Validate a username against all availability requirements.
*
* @param $username
* @return array [ valid: true/false, message: 'Reason why invalid' ]
*/
protected function _checkUsername($username)
{
$username = trim($username);
$lower = User::getLowerCase($username);
// Username must exist.
if (empty($username)) {
return array('valid' => FALSE, 'message' => 'Username not specified.');
}
// Username must only contain letters, numbers, -_~.
if (!preg_match('/^([a-zA-Z0-9_.~-]+)$/', $username)) {
return array('valid' => FALSE, 'message' => 'Username contains invalid characters. Only letters and numbers, dash, underscore, tilde and a period are allowed.');
}
// Username must be at least 3 characters long.
if (strlen($lower) < 3) {
return array('valid' => FALSE, 'message' => 'Username must contain at least three alphanumeric characters.');
}
// Username must not start with a period.
if ($lower[0] == '.') {
return array('valid' => FALSE, 'message' => 'Usernames must not start with a period.');
}
// Username must not contain forbidden words.
$fa_settings = $this->di->get('fa')->settings;
$blocked_words = explode(' ', strtolower(str_replace(array("\n", "\r"), array(' ', ''), $fa_settings['Account_Name_Blocklist'])));
$found = FALSE;
$word = null;
foreach ($blocked_words as $word) {
if (trim($word) and strpos($username, $word) !== FALSE || strpos(strtolower($username), $word) !== FALSE) {
$found = TRUE;
break;
}
}
if ($found) {
return array('valid' => FALSE, 'message' => 'The word "' . $word . '" is forbidden in usernames.');
}
// Check if account exists.
$existing_user = User::getRepository()->findOneBy(array('lower' => $lower));
if ($existing_user instanceof User) {
if ($existing_user->accesslevel == User::LEGACY_ACL_BANNED) {
return array('valid' => FALSE, 'message' => 'This username already exists and is banned.');
} else {
return array('valid' => FALSE, 'message' => 'This username already exists!');
}
}
// Check if reservation exists.
$existing_reservation = RegistrationRequest::getRepository()->findOneBy(array('lower' => $lower));
if ($existing_reservation instanceof RegistrationRequest) {
// Reservations more than 24 hours old are expired.
if ($existing_reservation->created_at >= time() - 86400) {
return array('valid' => FALSE, 'message' => 'A registration request already exists for this username. Check your e-mail for more information!');
}
}
// Return valid if none of the above checks failed!
return array('valid' => TRUE, 'message' => '');
}
/**
* Set the username and lower-case version together.
* @param $username
*/
public function setUsername($username)
{
$this->username = $username;
$this->lower = User::getLowerCase($username);
}
/**
* Adds support for generating user icons for the following shortcuts:
* :iconusername:, :linkusername:, @username and @@username
* (Note: this function assumes the text has been run through filter().)
*
* @param $string
* @return mixed
*/
public function userIcons($string)
{
// :iconusername:
$string = preg_replace_callback('|\\:icon([-\\w\\d_\\[\\]\\^`~.]+?)\\:|i', function ($matches) {
$username = $matches[1];
$user_url = $this->url->get('user/' . User::getLowerCase($username));
$user_avatar = User::getUserAvatar($username, time());
return '<a href="' . $user_url . '" class="iconusername"><img src="' . $user_avatar . '" align="middle" title="' . $username . '" alt="' . $username . '"> ' . $username . '</a>';
}, $string);
// :usernameicon:
$string = preg_replace_callback('|\\:([-\\w\\d_\\[\\]\\^`~.]+?)icon\\:|i', function ($matches) {
$username = $matches[1];
$user_url = $this->url->get('user/' . User::getLowerCase($username));
$user_avatar = User::getUserAvatar($username, time());
return '<a href="' . $user_url . '" class="iconusername"><img src="' . $user_avatar . '" align="middle" title="' . $username . '" alt="' . $username . '"></a>';
}, $string);
// @@username
$string = preg_replace_callback('!(^|\\s)@@([-\\w\\d_\\[\\]\\^`~.]{2,})(?=$|\\s|[<:])!mi', function ($matches) {
$username = $matches[2];
$user_url = $this->url->get('user/' . User::getLowerCase($username));
$user_avatar = User::getUserAvatar($username, time());
return '<a href="' . $user_url . '" class="iconusername"><img src="' . $user_avatar . '" align="middle" title="' . $username . '" alt="' . $username . '" /> ' . $username . '</a>';
}, $string);
// @username
$string = preg_replace_callback('!(^|\\s)@([-\\w\\d_\\[\\]\\^`~.]{2,})(?=$|\\s|[<:])!mi', function ($matches) {
$username = $matches[2];
$user_url = $this->url->get('user/' . User::getLowerCase($username));
return '<a href="' . $user_url . '" class="linkusername">' . $username . '</a>';
}, $string);
// :linkusername:
$string = preg_replace_callback('|\\:link([-\\w\\d_\\[\\]\\^`~.]+?)\\:|i', function ($matches) {
$username = $matches[1];
$user_url = $this->url->get('user/' . User::getLowerCase($username));
return '<a href="' . $user_url . '" class="linkusername">' . $username . '</a>';
}, $string);
return $string;
}
