class.tx_rsaauth_loginformhook.php

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<?php
/***************************************************************
*  Copyright notice
*
*  (c) 2009-2011 Dmitry Dulepov <dmitry@typo3.org>
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project is
*  free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*
*  This script is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/

/**
 * [CLASS/FUNCTION INDEX of SCRIPT]
 *
 * $Id: class.tx_rsaauth_loginformhook.php 10120 2011-01-18 20:03:36Z ohader $
 */

require_once(t3lib_extMgm::extPath('rsaauth') . 'sv1/backends/class.tx_rsaauth_backendfactory.php');
require_once(t3lib_extMgm::extPath('rsaauth', 'sv1/storage/class.tx_rsaauth_storagefactory.php'));

/**
 * This class provides a hook to the login form to add extra javascript code
 * and supply a proper form tag.
 *
 * @author  Dmitry Dulepov <dmitry@typo3.org>
 * @package TYPO3
 * @subpackage  tx_rsaauth
 */
class tx_rsaauth_loginformhook {

    /**
     * Adds RSA-specific JavaScript and returns a form tag
     *
     * @return  string  Form tag
     */
    public function getLoginFormTag(array $params, SC_index& $pObj) {
        $form = null;
        if ($pObj->loginSecurityLevel == 'rsa') {

            // If we can get the backend, we can proceed
            $backend = tx_rsaauth_backendfactory::getBackend();
            if (!is_null($backend)) {

                // Add form tag
                $form = '<form action="index.php" method="post" name="loginform" onsubmit="tx_rsaauth_encrypt();">';

                // Generate a new key pair
                $keyPair = $backend->createNewKeyPair();

                // Save private key
                $storage = tx_rsaauth_storagefactory::getStorage();
                /* @var $storage tx_rsaauth_abstract_storage */
                $storage->put($keyPair->getPrivateKey());

                // Add RSA hidden fields
                $form .= '<input type="hidden" id="rsa_n" name="n" value="' . htmlspecialchars($keyPair->getPublicKeyModulus()) . '" />';
                $form .= '<input type="hidden" id="rsa_e" name="e" value="' . sprintf('%x', $keyPair->getExponent()) . '" />';
            }
        }
        return $form;
    }


    /**
     * Provides form code for the superchallenged authentication.
     *
     * @param   array   $params Parameters to the script
     * @param   SC_index    $pObj   Calling object
     * @return  string  The code for the login form
     */
    public function getLoginScripts(array $params, SC_index &$pObj) {
        $content = '';

        if ($pObj->loginSecurityLevel == 'rsa') {
            $javascriptPath = t3lib_extMgm::siteRelPath('rsaauth') . 'resources/';
            $files = array(
                'jsbn/jsbn.js',
                'jsbn/prng4.js',
                'jsbn/rng.js',
                'jsbn/rsa.js',
                'jsbn/base64.js',
                'rsaauth_min.js'
            );

            $content = '';
            foreach ($files as $file) {
                $content .= '<script type="text/javascript" src="' .
                    t3lib_div::getIndpEnv('TYPO3_SITE_URL') .
                    $javascriptPath . $file . '"></script>';
            }
        }

        return $content;
    }
}

if (defined('TYPO3_MODE') && isset($GLOBALS['TYPO3_CONF_VARS'][TYPO3_MODE]['XCLASS']['ext/rsaauth/hooks/class.tx_rsaauth_loginformhook.php'])) {
    include_once($GLOBALS['TYPO3_CONF_VARS'][TYPO3_MODE]['XCLASS']['ext/rsaauth/hooks/class.tx_rsaauth_loginformhook.php']);
}

?>