<?
authorize();

$InviteKey = db_string($_GET['invite']);
$DB->query("SELECT InviterID FROM invites WHERE InviteKey='$InviteKey'");
list($UserID) = $DB->next_record();
if ($DB->record_count() == 0 || $UserID!=$LoggedUser['ID']) {
	error(404);
}

$DB->query("DELETE FROM invites WHERE InviteKey='$InviteKey'");

if (!check_perms('site_send_unlimited_invites')) {
	$DB->query("SELECT Invites FROM users_main WHERE ID = ".$UserID." LIMIT 1");
	list($Invites) = $DB->next_record();
	if ($Invites < 10) {
		$DB->query("UPDATE users_main SET Invites=Invites+1 WHERE ID='$UserID'");
		$Cache->begin_transaction('user_info_heavy_'.$UserID);
		$Cache->update_row(false, array('Invites'=>'+1'));
		$Cache->commit_transaction(0);
	}
}
header('Location: user.php?action=invite');

?>