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add phpdns

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Peter Baumann 2013-06-04 15:39:21 +02:00
parent e81fd3702d
commit 122cfa829a
1 changed files with 58 additions and 0 deletions
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58
dns-scripts/phpdns.php Executable file
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<?php
$explode = explode('.', $_GET['host']);
$host = array_shift($explode);
$zone = implode('.', $explode);
$ip = ($_GET['ip']) ? $_GET['ip'] : $_SERVER['REMOTE_ADDR'];
function reload_zone($zone) {
exec('/usr/sbin/rndc reload ' . $zone . ' 2>&1', $rndc);
return $rndc;
}
function valid_ip($ip) {
return (@gethostbyaddr($ip)) ? true : false;
}
function change_zonefile($zone, $host, $ip) {
if(file_exists('/var/lib/named/' . $zone . '.hosts')) {
$fp = fopen('/var/lib/named/' . $zone . '.hosts', 'r');
$found = false; $update = false;
while($line = fgets($fp, 1024)) {
$buffer = rtrim($line);
if(preg_match("/^" . $host . "/", $buffer)) {
preg_match("/([0-9]{2,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3})/", $buffer, $act_ip);
$update = ($act_ip[1] == $ip) ? false : true;
$buffer = preg_replace("/([0-9]{2,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3})/", $ip, $buffer);
$found = true;
}
if(preg_match("/[\t]?[0-9]{10}$/", $buffer)) {
$buffer = preg_replace("/[0-9]{8}([0-9]{2})$/e", date("Ymd") . "$1 + 1", $buffer);
}
$zone_file .= $buffer . "\n";
}
fclose($fp);
if($update) {
$fp = fopen('/var/lib/named/' . $zone . '.hosts', 'w');
fputs($fp, $zone_file);
fclose($fp);
reload_zone($zone);
}
return ($found) ? true : false;
} else {
return false;
}
}
header("Content-Type: text/plain");
if($host && $zone) {
if(valid_ip($ip)) {
echo (change_zonefile($zone, $host, $ip)) ? 'OK' : 'NOK';
} else {
echo 'NOK';
}
} else {
echo 'NOK';
}
?>