1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
#!/usr/bin/php -f
<?php
// add include "/etc/dhcpd.hosts.conf"; to your dhcp config
$url = 'https://www.freifunk-myk.de/services/ips';
$out = '/etc/dhcpd.hosts.conf';
if(!is_writable($out)) die('Output file perms');
if( ($data = file_get_contents($url)) === FALSE ) die('Error getting ips');
$data = unserialize($data);
$active=array();
foreach($data as $host) {
if(!preg_match('/^[a-f0-9]{12}$/', $host['mac'])) {
trigger_error('Host mit falscher MAC?!', E_USER_WARNING);
}elseif(!preg_match('/^10\.222\.\(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?\)\.\(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?\)$/', $host['staticip'])) {
trigger_error('Host mit falscher IP?!'.$host['mac'], E_USER_WARNING);
}else{
$active[] = $host;
}
}
if(count($active) < 5) die('Less than 5 hosts? Database broken?');
$oldhash = hash_file("sha256", $out);
$fp=fopen($out, 'w');
foreach($active as $host) {
fwrite($fp, "host host".$host['mac']." {"."\n");
fwrite($fp, "\thardware ethernet ".
substr($host['mac'],0,2).":".
substr($host['mac'],2,2).":".
substr($host['mac'],4,2).":".
substr($host['mac'],6,2).":".
substr($host['mac'],8,2).":".
substr($host['mac'],10,2).
';'."\n");
fwrite($fp, "\tfixed-address ".$host['staticip'].';'."\n");
fwrite($fp, "}\n\n");
}
fclose($fp);
$newhash = hash_file("sha256", $out);
if($oldhash != $newhash) {
exec('systemctl restart dhcpd4.service');
}
?>
|
