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<?php
$wgHooks['EditPage::showEditForm:fields'][] = 'FunnyDot::addAntiSpamCheck';
$wgHooks['EditFilter'][] = 'FunnyDot::checkAntiSpamHash';
$wgExtensionCredits['other'][] = array(
'name' => 'FunnyDot',
'description' => 'Schutz vor Spam-Bots',
'author' => 'Pierre Schmitz',
'url' => 'http://www.archlinux.de',
);
class FunnyDot {
public static function addAntiSpamCheck($editpage, $outputpage)
{
global $wgAntiSpamHash, $wgUser;
if (!$wgUser->isLoggedIn())
{
$outputpage->addHTML('<div style="background-image:url(FunnyDotImage.php);background-repeat:no-repeat;visibility:hidden;width:1px;height:1px;"> </div>');
$time = time();
$hash = sha1($time.$wgAntiSpamHash);
setCookie('AlternateAntiSpamTime', $time);
setCookie('AlternateAntiSpamHashTail', substr($hash, 4));
$outputpage->addHTML('<div style="display:none;"><label for="AlternateAntiSpamHashHeadField">Sicherheitscode bestätigen: <strong>'.substr($hash, 0, 4).'</strong></label> <input id="AlternateAntiSpamHashHeadField" type="text" name="AlternateAntiSpamHashHead" size="4" value="" /></div>');
}
return true;
}
public static function checkAntiSpamHash($editpage, $text, $section, $error)
{
global $wgAntiSpamHash, $wgAntiSpamTimeout, $wgAntiSpamWait, $wgUser;
if (!$wgUser->isLoggedIn())
{
if (!empty($_COOKIE['AntiSpamTime']) && !empty($_COOKIE['AntiSpamHash']))
{
$time = $_COOKIE['AntiSpamTime'];
$hash = $_COOKIE['AntiSpamHash'];
}
elseif (!empty($_COOKIE['AlternateAntiSpamTime']) && !empty($_COOKIE['AlternateAntiSpamHashTail']) && !empty($_POST['AlternateAntiSpamHashHead']))
{
$time = $_COOKIE['AlternateAntiSpamTime'];
$hash = $_POST['AlternateAntiSpamHashHead'].$_COOKIE['AlternateAntiSpamHashTail'];
}
else
{
sleep($wgAntiSpamWait);
$error = '<div class="mw-warning error">Ungültige Formulardaten empfangen. Stelle sicher, daß Cookies für diese Domain angenommen werden.</div>';
return true;
}
$now = time();
if ($hash != sha1($time.$wgAntiSpamHash))
{
sleep($wgAntiSpamWait);
$error = '<div class="mw-warning error">Fehlerhafte Formulardaten empfangen. Überprüfe den Sicherheitscode!</div>';
}
elseif ($now - $time > $wgAntiSpamTimeout)
{
$error = '<div class="mw-warning error">Deine Zeit ist abgelaufen. Schicke das Formular bitte erneut ab, und zwar innherlab der nächsten '.$wgAntiSpamTimeout.' Sekunden.</div>';
}
elseif ($now - $time < $wgAntiSpamWait)
{
sleep($wgAntiSpamWait);
$error = '<div class="mw-warning error">Du warst zu schnell. Schicke das Formular bitte erneut ab. Laße Dir diesmal mindestens '.$wgAntiSpamWait.' Sekunden Zeit.</div>';
}
}
return true;
}
}
?>
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