class.ilMailFormCall.php

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<?php
/* Copyright (c) 1998-2012 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilMailFormCall
{
        const REFERER_KEY = 'r';

        const SIGNATURE_KEY = 'sig';

        public static function getLinkTarget($gui, $cmd, Array $gui_params = array(), Array $mail_params = array())
        {
                return self::getTargetUrl('&amp;', $gui, $cmd, $gui_params, $mail_params);
        }

        public static function getRedirectTarget($gui, $cmd, Array $gui_params = array(), Array $mail_params = array())
        {
                return self::getTargetUrl('&', $gui, $cmd, $gui_params, $mail_params);
        }

        protected static function getTargetUrl($argument_separator, $gui, $cmd, Array $gui_params = array(), Array $mail_params = array())
        {
                $mparams = '';
                $referer = '';

                foreach($mail_params as $key => $value)
                {
                        $mparams .= $argument_separator . $key . '=' . $value;
                }

                if(is_object($gui))
                {
                        global $ilCtrl;
                        $ilCtrlTmp = clone $ilCtrl;
                        foreach($gui_params as $key => $value)
                        {
                                $ilCtrlTmp->setParameter($gui, $key, $value);
                        }
                        $referer = $ilCtrlTmp->getLinkTarget($gui, $cmd, '', false, false);
                }
                else if(is_string($gui))
                {
                        $referer = $gui;
                }

                $referer = $argument_separator . self::REFERER_KEY . '=' . rawurlencode(base64_encode($referer));

                return 'ilias.php?baseClass=ilMailGUI' . $referer . $mparams;
        }

        public static function storeReferer($request_params)
        {
                if(isset($request_params[self::REFERER_KEY]))
                {
                        $_SESSION[self::REFERER_KEY]   = base64_decode(rawurldecode($request_params[self::REFERER_KEY]));
                        $_SESSION[self::SIGNATURE_KEY] = base64_decode(rawurldecode($request_params[self::SIGNATURE_KEY]));
                }
                else
                {
                        unset($_SESSION[self::REFERER_KEY]);
                        unset($_SESSION[self::SIGNATURE_KEY]);
                }
        }

        public static function getSignature()
        {
                $sig = $_SESSION[self::SIGNATURE_KEY];

                unset($_SESSION[self::SIGNATURE_KEY]);

                return $sig;
        }

        public static function getRefererRedirectUrl()
        {
                $url = $_SESSION[self::REFERER_KEY];

                if(strlen($url))
                {
                        $parts = parse_url($url);
                        if(isset($parts['query']) && strlen($parts['query']))
                        {
                                $url .= '&returned_from_mail=1';
                        }
                        else
                        {
                                $url .= '?returned_from_mail=1';
                        }
                }

                unset($_SESSION[self::REFERER_KEY]);

                return $url;
        }

        public static function isRefererStored()
        {
                return isset($_SESSION[self::REFERER_KEY]) && strlen($_SESSION[self::REFERER_KEY]) ? true : false;
        }
}