pamela/associate.php

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PHP
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<?php
$message = "";
if(isset($_POST['submit'])) {
$mac = csv_filter($_POST['macaddress']);
$name = csv_filter($_POST['name']);
if($mac != "" && $name != null) {
if(is_mac($mac)) {
file_put_contents("mac_log.csv","$mac,$name\n",FILE_APPEND);
$message = "Registered, thanks! It might take a few minutes for your name to show up.";
}
else {
$message = "The MAC address doesn't look right. MAC addresses look like this: 00:1a:2b:3c:4d:5e";
}
}
else {
$message = "Please enter a MAC address and name.";
}
}
function csv_filter($value) {
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return preg_replace('/[^a-z0-9: {}]/i','',$value);
}
function is_mac($mac) {
if(preg_match('/^([0-9a-f]{2}([:-]|$)){6}$/i',$mac) > 0){
return true;}
else { return false; }
}
$arp_found = false;
function arp_lookup($ip) {
global $arp_found;
$arp = shell_exec("/usr/sbin/arp -a | grep $ip");
preg_match('/at ([0-9a-f]{2}[: ]){6}/i',$arp,$matches);
if(sizeof($matches) > 0) {
$mac = split(" ",$matches[0]);
$arp_found = true;
return $mac[1];
}
else {
$arp_found = false;
return "";
}
}
include('header-inc.php');
?>
<span class="message">
<?php echo $message; ?>
</span>
<div id="content">
<h2>Register Your Device</h2>
<div class="caption">
<form method="post" action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>">
<h3>Your computer or mobile device's MAC address can be found under your network info!</h3>
<table>
<tr><td><label for="name">Your Name:</label></td><td><input type="text" id="name" name="name" /></td></tr>
<tr><td><label for="macaddress">MAC Address:</label></td><td><input type="text" id="macaddress" name="macaddress" value="<?php echo arp_lookup($_SERVER['REMOTE_ADDR']); ?>" />
<span id="autodetect"><?php if($arp_found) { echo "(Autodetected your MAC from IP address ".$_SERVER['REMOTE_ADDR'].")"; } ?></span>
</td></tr>
</table>
<input type="submit" id="submit" name="submit" value="Register" />
</form>
</div>
</div>
</div>
</body>
</html>