/**
* generates a Mollom captcha for comments
*
* Returns the captcha code string and image URL (via the $image parameter).
*
* @return string;
*/
function generateCaptcha(&$image)
{
Mollom::setPublicKey(getOption('public_key'));
Mollom::setPrivateKey(getOption('private_key'));
$servers = Mollom::getServerList();
Mollom::setServerList($servers);
// get captcha
$captcha = Mollom::getImageCaptcha();
$session_id = $captcha['session_id'];
query('DELETE FROM ' . prefix('captcha') . ' WHERE `ptime`<' . (time() - 3600), true);
// expired tickets
query("INSERT INTO " . prefix('captcha') . " (ptime, hash) VALUES ('" . escape(time()) . "','" . escape($session_id) . "')", true);
$image = $captcha['url'];
return $session_id;
}
private function getCaptcha($sessID, $type, $retry = true)
{
try
{
if ($type == 'image')
{
$info = Mollom::getImageCaptcha($sessID);
}
else
{
$info = Mollom::getAudioCaptcha($sessID);
}
return $info;
}
catch (KeyNotSetException $e)
{
return null;
}
catch (InternalException $e)
{
return null;
}
catch (OutdatedServerListException $e)
{
CoOrg::config()->set('mollom/serverlist', Mollom::getServerList());
CoOrg::config()->save();
return $retry ? self::getCaptcha($sessID, $type, false) : null;
}
catch (NoServerListException $e)
{
CoOrg::config()->set('mollom/serverlist', Mollom::getServerList());
CoOrg::config()->save();
return $retry ? self::getCaptcha($sessID, $type, false) : null;
}
}
/**
* @todo use formui
*/
private function send_captcha($comment = null)
{
Session::add_to_set('mollom', $comment, 'comment');
$theme = Themes::create();
$theme->comment = $comment;
try {
$theme->captcha = Mollom::getImageCaptcha($comment->info->mollom_session_id);
$theme->audio_captcha = Mollom::getAudioCaptcha($comment->info->mollom_session_id);
} catch (Exception $e) {
}
$theme->display('mollom_fallback_captcha');
}
