';
}
private static function checkFunnyDot() {
global $wgFunnyDotHash, $wgFunnyDotTimeout, $wgFunnyDotWait;
# set some sane defaults
# can be overridden in LocalSettings.php
!isset($wgFunnyDotHash) && $wgFunnyDotHash = '';
!isset($wgFunnyDotTimeout) && $wgFunnyDotTimeout = 3600;
!isset($wgFunnyDotWait) && $wgFunnyDotWait = 2;
if (!empty($_COOKIE['FunnyDotTime']) && (!empty($_COOKIE['FunnyDotHash']) || !empty($_POST['FunnyDotHash']))) {
$now = time();
$time = $_COOKIE['FunnyDotTime'];
$hash = !empty($_POST['FunnyDotHash']) ? $_POST['FunnyDotHash'] : $_COOKIE['FunnyDotHash'];
} else {
return false;
}
if ($hash != substr(sha1($time.$wgFunnyDotHash), 0, 4)) {
return false;
} elseif ($now - $time > $wgFunnyDotTimeout) {
return false;
} elseif ($now - $time < $wgFunnyDotWait) {
return false;
} else {
return true;
}
}
public static function addFunnyDotToEditPage($editpage, $output) {
global $wgUser;
if (!$wgUser->isLoggedIn()) {
$editpage->editFormTextAfterWarn .= self::getFunnyDot();
}
return true;
}
public static function checkFunnyDotOnEditPage($editpage, $text, $section, $error) {
global $wgUser;
if (!$wgUser->isLoggedIn() && !self::checkFunnyDot()) {
$error = '
Please type in the correct code!
';
}
return true;
}
public static function addFunnyDotToUserLoginForm($template) {
$template->set('header', self::getFunnyDot());
return true;
}
public static function checkFunnyDotOnAbortLogin($user, $password, $retval) {
# LoginForm::ABBORT is not yet supported by MediaWiki
$retval = LoginForm::ILLEGAL;
return self::checkFunnyDot();
}
public static function addFunnyDotToUserCreateForm($template) {
$template->set('header', self::getFunnyDot());
return true;
}
public static function checkFunnyDotOnAbortNewAccount($user, $message) {
if (!self::checkFunnyDot()) {
$message = '
Please type in the correct code!
';
return false;
} else {
return true;
}
}
}
class SpecialFunnyDotImage extends UnlistedSpecialPage {
function __construct() {
parent::__construct('FunnyDotImage');
}
function execute($par) {
global $wgFunnyDotHash, $wgOut;
# I will handle the output myself
$wgOut->disable();
!isset($wgFunnyDotHash) && $wgFunnyDotHash = '';
# FunnyDotTime should be set in the Form
# if not just set a new value
if (!empty($_COOKIE['FunnyDotTime'])) {
$time = $_COOKIE['FunnyDotTime'];
} else {
$time = time();
setCookie('FunnyDotTime', $time);
}
setCookie('FunnyDotHash', substr(sha1($time.$wgFunnyDotHash), 0, 4));
header('HTTP/1.1 200 OK');
header("Cache-Control: no-cache, must-revalidate");
header('Content-Type: image/png');
header('Content-Length: 135');
# transparent png (1px*1px)
echo base64_decode('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAAXNSR0IArs4c6QAAAAlwSFlzAAALEwAACxMBAJqcGAAAAAd0SU1FB9gLFxMRGNZyzLoAAAACYktHRAD/h4/MvwAAAAtJREFUCB1j+M8AAAIBAQDFXxteAAAAAElFTkSuQmCC');
}
}
?>