<?php
/**
* Example web server usage of RandomBytes class.
* Martin Latter, 13/04/2015
*/
##################################################
declare(strict_types=1);
mb_internal_encoding('UTF-8');
mb_http_output('UTF-8');
header('Content-Type: text/html; charset=utf-8');
##################################################
##################################################
require('classes/randombytes.class.php');
use Tinram\RandomBytes\RandomBytes;
##################################################
$aRandGenMethods = ['openssl', 'urandom', 'random_bytes'];
$bSubmitted = (isset($_POST['submit_check'])) ? true : false;
function generateTable(array $aData): void
{
echo '
<table>
<tr><td class="tfirst">raw</td><td>' . $aData['raw'] . '</td></tr>
<tr><td>raw, hex</td><td>' . $aData['hex']. '</td></tr>
<tr><td>SHA256</td><td>' . $aData['sha'] . '</td></tr>
<tr><td>SHA256 <small>(bytes)</small></td><td>' . $aData['shabytes'] . '</td></tr>
<tr><td>Whirlpool</td><td>' . $aData['whirlpool'] . '</td></tr>
</table>
';
}
?><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Random Bytes</title>
<meta name="author" content="Martin Latter">
<style>
html * {margin:0; padding:0;}
body {font:0.83em verdana,arial,helvetica,sans-serif; background:#fff; color:#000; margin:4em 0 0 4em;}
h1 {margin:0 0 20px 0; font-size:1.1em;}
div#frbcont {width:376px; margin:0 0 60px 0;}
form#frb label {margin:0 5px 0 0;}
form#frb input, form#frb select {border-radius:5px; background:#f2f9f9; padding:2px; border:1px solid #c8e4ff; background:linear-gradient(to top, #ebf8ff, #ffffff 80%);}
form#frb select {margin:0 12px 0 0;}
form#frb select#chars {width:50px;}
form#frb select#genmethod {width:120px;}
form#frb input[type='submit'] {width:80px; height:24px; color:#333; background:#f7ffff; border:0; font-weight:bold; text-align:center; margin-top:10px; padding-bottom:3px; height:25px; background:linear-gradient(to bottom, #f7ffff, #c8e4ff 100%);}
form#frb input[type='submit']:hover {background:#39f; color:#fff; cursor:pointer;}
table {border-collapse:collapse;}
td {padding:4px; border:1px solid #bbb;}
td.tfirst {width:130px;}
</style>
</head>
<body>
<h1>Random Bytes</h1>
<div id="frbcont">
<form id="frb" method="post" action="<?php echo htmlspecialchars(strip_tags($_SERVER['PHP_SELF']), ENT_QUOTES, 'UTF-8'); ?>">
<div>
<label for="chars" title="number of characters">chars</label>
<select id="chars" name="chars">
<?php
$iChars = ($bSubmitted) ? (int) $_POST['chars'] : 0;
$sSelected = '';
$sOut = '';
for ($i = 16; $i < 72; $i += 8)
{
$sSelected = ($i !== $iChars) ? '' : ' selected';
$sOut .= '<option value="' . $i . '"' . $sSelected . '>' . $i . '</option>';
}
echo $sOut;
?>
</select>
<label for="genmethod" title="random bytes generation method">method</label>
<select id="genmethod" name="genmethod">
<?php
$sOut = '';
foreach ($aRandGenMethods as $sMethod)
{
$sSelected = ($bSubmitted && $_POST['genmethod'] === $sMethod) ? ' selected' : '';
$sOut .= '<option value="' . $sMethod . '"' . $sSelected . '>' . $sMethod . '</option>';
}
echo $sOut;
?>
</select>
<input type="submit" value="generate">
</div>
<input type="hidden" name="submit_check">
</form>
</div>
<?php
if ($bSubmitted)
{
$iChars = (int) $_POST['chars'];
$aData = RandomBytes::generate($iChars, htmlentities(strip_tags($_POST['genmethod'])));
generateTable($aData);
}
?>
</body>
</html>
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