I am writing an open source web page that I can't believe doesn't exist
already. basically i want to see all the DHCP clients on my network AND
their nice windows names -- that is the tricky part -- I can't find a
tool that does that part. GRRR...
Anyways, here is what I have so far if you want to see it:
http://daevid.com/examples/dhcp/index.php
To match up the names however I need to parse the
/var/lib/dhcp/dhcp.leases file and map the "client-hostname" tag to the
proper MAC address.
So my question is, does anyone have some code (PHP preferred obviously,
but any language should work or be portable) that will take a file of
the form below and split it into the chunks required. Or anything even
close? For example, a 'chunk' would be between the { and } . I'm sure I
can figure this out, but before I go re-inventing the wheel, thought
someone might have done this already to some degree.
lease 192.168.1.3 {
starts 1 2003/06/16 07:38:55;
ends 1 2003/06/16 07:48:55;
binding state active;
next binding state free;
hardware ethernet 00:80:45:31:d8:29;
}
lease 192.168.1.6 {
starts 1 2003/06/16 07:39:27;
ends 1 2003/06/16 07:49:27;
binding state active;
next binding state free;
hardware ethernet 48:54:e8:26:23:38;
uid "\001HT\350";
client-hostname "jme";
}
when the script is finished I'll post it up for anyone to use on their
own servers...
by the way, does anyone know why "arp -n" (what i'm using) shows
machines that are NOT even turned on? like my notebook shows up despite
having been off for several hours? Is there a way to get a real time
list of the machines on my network? I thought that's what arp did, but
apparently not. :(
d
