#16 DHCP

[Steffen Schwenke]

Would it be possible to get MAC und Name from a
DHCP-lease file and put it in your ip-database ?

[mearls]

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user_id=386949

It is possible, what platform is this file created on? Can
you supply a sample file? I assume this file would have to
be read in a few times per day if you want the data up to
date or on the fly when someone request the data.

[Steffen Schwenke]

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user_id=319044

We use Linux with ISC DHCPD Version 3
here a sample what is in /var/lib/dhcp/dhcpd.leases

------------ snip ----------------
lease 172.17.251.252 {
starts 4 2005/05/12 12:10:03;
ends 4 2005/05/12 14:10:03;
tstp 4 2005/05/12 14:10:03;
binding state free;
hardware ethernet 00:12:01:11:a9:d5;
uid "\001\000\022\001\021\251\325";
}
lease 172.17.253.199 {
starts 3 2006/10/18 06:53:04;
ends 3 2006/10/18 08:53:04;
binding state active;
next binding state free;
hardware ethernet 00:13:19:a8:ef:0a;
uid "\001\000\023\031\250\357\012";
client-hostname "SEP001319A8EF0A";
}
lease 212.122.XXX.XXX {
starts 3 2006/10/18 06:52:32;
ends 3 2006/10/18 09:52:32;
binding state active;
next binding state free;
hardware ethernet 00:03:93:0a:c3:60;
uid "\001\000\003\223\012\303`";
client-hostname "Max";
}
lease 212.122.XXX.XXX {
starts 3 2006/10/18 06:38:56;
ends 3 2006/10/18 08:38:56;
binding state active;
next binding state free;
hardware ethernet 00:11:24:db:49:72;
uid "\001\000\021$\333Ir";
client-hostname "Pong";
}
----------------- snap -----------

it should be possible to run a php script via cron some
times a day.

[mearls]

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user_id=386949

Hi Steffen,

Please use the following php script to test out the
dhcp.lease data to verify if this will parse correctly.

Please let me know, I would like to add this to the next
release.

Cheers,

mearls

[mearls]

test dhcp.lease file

[st0rm]

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user_id=690166
Originator: NO

Looks like it parses fine. Example output(using the posted data) matches ours:

Lease = 172.17.251.252
Lease Start = 2005/05/12
Lease Mac = 00:12:01:11:a9:d5
Lease = 172.17.253.199
Lease Start = 2006/10/18
Lease Mac = 00:13:19:a8:ef:0a
Lease Hostname = "SEP001319A8EF0A"
Lease = 212.122.XXX.XXX
Lease Start = 2006/10/18
Lease Mac = 00:03:93:0a:c3:60
Lease Hostname = "Max"
Lease = 212.122.XXX.XXX
Lease Start = 2006/10/18
Lease Mac = 00:11:24:db:49:72
Lease Hostname = "Pong"