File: yubicloud.demo.php

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File: yubicloud.demo.php
Role: Example script
Content type: text/plain
Description: Implementation example
Class: Pure PHP Yubicloud authentication
Check YubiKeys OTP in multiple servers
Author: By
Last change: Update of yubicloud.demo.php
Date: 1 year ago
Size: 6,628 bytes
 

Contents

Class file image Download
<?php
/**
 * @file yubicloud.demo.php
 * @brief Yubicloud LGPLv3 PHP class demo implementation
 *
 * @mainpage
 *
 * This is a small demo implementation of the Yubicloud PHP class.
 *
 * PHP 5.3.0 or higher is supported.
 *
 * @author Andre Liechti, SysCo systemes de communication sa, <info@multiotp.net>
 * @version 4.3.3.2
 * @date 2019-04-24
 * @since 2014-11-04
 * @copyright (c) 2014-2019 SysCo systemes de communication sa
 * @license GNU Lesser General Public License
 * @link http://www.multiotp.net/
 *
 *//*
 *
 * LICENCE
 *
 * Copyright (c) 2014-2019 SysCo systemes de communication sa
 * SysCo (tm) is a trademark of SysCo systemes de communication sa
 * (http://www.sysco.ch/)
 * All rights reserved.
 *
 * This file is part of the Yubicloud PHP class.
 *
 * Yubicloud PHP class is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 *
 * Yubicloud PHP class 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Yubicloud PHP class.
 * If not, see <http://www.gnu.org/licenses/>.
 *
 *
 * Usage
 *
 * You need a Yubico API key which is free if you have at least one Yubikey.
 * You can ask for your own key here: https://upgrade.yubico.com/getapikey/
 *
 *
 * Change Log
 *
 * 2019-04-24 4.3.3.2 SysCo/al https is now the default connection, merged from matthieuonfray fork on GitHub
 * 2016-11-12 4.3.2.2 SysCo/al Merge the constructor change proposed by My1 on GitHub (PHP4 style is deprecated in PHP7)
 * 2014-12-29 4.3.2.1 SysCo/al Adding information about the server which answered
 * 2014-12-29 4.3.2.0 SysCo/al Some modifications for future PSR compliance (http://www.php-fig.org/)
 * 2014-12-26 4.3.1.3 SysCo/al Additional detailed information
 * 2014-12-22 4.3.1.2 SysCo/al Detailed response information
 * 2014-11-04 4.3.0.0 SysCo/al Initial release, version number is synchronized with the multiOTP project
 *********************************************************************/
   
   
require_once('yubicloud.class.php');
   
   
$otp_to_check = trim(isset($_POST['otp'])?$_POST['otp']:'');
   
    echo
"<html>\n";
    echo
"<head>\n";
    echo
"<title>Yubicloud PHP class demo</title>\n";
    echo
"</head>\n";
    echo
"<body onload=\"document.getElementById('otp').focus();\">\n";
    echo
"<form method=\"post\" action=\"yubicloud.demo.php\">\n";
    echo
"<fieldset>\n";
    echo
"<legend>YubiCloud demo</legend>\n";
    echo
"Touch the YubiKey button:<br />\n";
    echo
"<input type=\"text\" id=\"otp\" name=\"otp\" value=\"\" size=\"80\">\n";
    echo
"<input type=\"submit\" value=\"Submit\">\n";
    echo
"</fieldset>\n";
    echo
"</form>\n";

    if (
0 != strlen($otp_to_check))
    {
       
$yubicloud = new Yubicloud();
       
$result = $yubicloud->checkOnYubiCloud($otp_to_check);
       
        echo
"<hr />";
        echo
"OTP to check: <b>$otp_to_check</b>\n";
        echo
"<br />";
        echo
"YubiCloud result: <b>$result</b>\n";
        echo
"<br /><br />\n";
       
       
$response = $yubicloud->getYubiCloudLastResponse();
       
ksort($response);
        echo
"Detailed response: <br />\n";
        echo
"<table>\n";
        foreach(
$response as $key=>$value) {
            echo
"<tr><td>$key:</td><td><b>$value</b></td><td><i>";
            switch (
$key) {
                case
"otp":
                    echo
"The OTP from the YubiKey, from request.";
                    break;
                case
"nonce":
                    echo
"Random unique data, from request.";
                    break;
                case
"h":
                    echo
"Signature (base64).";
                    break;
                case
"now_utc":
                    echo
"Unix timestamp of the PHP server in UTC.";
                    break;
                case
"t":
                    echo
"Timestamp of the YubiCloud server in UTC.";
                    break;
                case
"t_utc":
                    echo
"Unix timestamp of the Yubicloud server in UTC.";
                    break;
                case
"status":
                    echo
"The status of the operation, see below.";
                    break;
                case
"timestamp":
                    echo
"YubiKey internal timestamp value when key was pressed.";
                    break;
                case
"sessioncounter":
                    echo
"YubiKey internal usage counter when key was pressed.";
                    break;
                case
"sessionuse":
                    echo
"YubiKey internal session usage counter when key was pressed.";
                    break;
                case
"sl":
                    echo
"Percentage of external validation server that replied successfully (0 to 100).";
                    break;
            }
            echo
"</i></td></tr>\n";
        }
        echo
"</table>\n";
    }
    echo <<< EOT
<hr />
<pre>
                   OK The OTP is valid.
              BAD_OTP The OTP is invalid format.
         REPLAYED_OTP The OTP has already been seen by the service.
        BAD_SIGNATURE The HMAC signature verification failed.
    MISSING_PARAMETER The request lacks a parameter.
       NO_SUCH_CLIENT The request id does not exist.
OPERATION_NOT_ALLOWED The request id is not allowed to verify OTPs.
        BACKEND_ERROR Unexpected error in Yubico servers. Please contact them if you see this error.
   NOT_ENOUGH_ANSWERS Server could not get requested number of syncs during before timeout.
     REPLAYED_REQUEST Server has seen the OTP/Nonce combination before.
            BAD_NONCE Answer Nonce is different from the request Nonce.
     CONNECTION_ERROR Impossible to make a connection with the YubiCloud servers.
     OTP_IS_DIFFERENT Answer OTP is different from request OTP.
   OUT_OF_TIME_WINDOW Timestamp difference with the Yubico servers is bigger than yubicloud_max_time_window.
       SERVER_TIMEOUT Timeout while waiting an answer from the server.
</pre>
EOT;
    echo
"</body>\n";
    echo
"</html>";


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