To show Mac & Ip Address in Captive portal Page (tutorial)

[khan]

// GEt ip address
$ipaddress=$_SERVER['REMOTE_ADDR'];
$macaddr=false;

// Run arp request
$arp=arp $ipaddress;
// breaks arp & get mac from it
$lines = explode(" ", $arp);
$macaddr = $lines[3];

// Display Mac & IP address
echo $macaddr;

echo $ipaddress;

?>

[kmnair]

Hello,

What command can I use to show hostname?

I saw
$hostname = gethostbyaddr($ipaddress);
mentioned somewhere, but it does not appear to work.

pfSense 2.1 beta 1 amd64

Regards

[wallabybob]

@kmnair:

What command can I use to show hostname?

hostname

[kmnair]

I am afraid I should have made the question more specific.

I was referring to the context of displaying hostname in PHP,

khan had posted how to display ipaddress and macaddress using php script.

I wanted hostname also to be displayed in the above process.

Does arp explode give a hostname in the output? If so how to retrieve it?

Thanks for your time.

kmnair

[Derelict]

Did you try using the captive portal function instead of your own callout to arp?

In /usr/local/captiveportal/index.php I see:

$clientip = $_SERVER['REMOTE_ADDR'];
$clientmac = arp_get_mac_by_ip($clientip);

That function is in /etc/inc/util.inc.  It does things like try to ping $clientip first to repopulate the arp table if necessary and check the result with is_macaddr().