<?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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