diff options
| -rwxr-xr-x | usr/local/www/diag_arp.php | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/usr/local/www/diag_arp.php b/usr/local/www/diag_arp.php index 4665a44..9dc12a5 100755 --- a/usr/local/www/diag_arp.php +++ b/usr/local/www/diag_arp.php @@ -248,10 +248,14 @@ function _getHostName($mac,$ip) { return $dhcpmac[$mac]; else if ($dhcpip[$ip]) return $dhcpip[$ip]; - else if(gethostbyaddr($ip) <> "" and gethostbyaddr($ip) <> $ip) - return gethostbyaddr($ip); - else - return ""; + else{ + exec("host -W 1 $ip", $output); + if (preg_match('/.*pointer ([A-Za-z0-9.-]+)\..*/',$output[0],$matches)) { + if ($matches[1] <> $ip) + return $matches[1]; + } + } + return ""; } $pgtitle = array(gettext("Diagnostics"),gettext("ARP Table")); @@ -277,8 +281,18 @@ ob_implicit_flush(1); // Resolve hostnames and replace Z_ with "". The intention // is to sort the list by hostnames, alpha and then the non // resolvable addresses will appear last in the list. +$dnsavailable=1; +$dns = trim(_getHostName("", "8.8.8.8")); +if ($dns == ""){ + $dns = trim(_getHostName("", "8.8.4.4")); + if ($dns == "") $dnsavailable =0; +} + foreach ($data as &$entry) { - $dns = trim(_getHostName($entry['mac'], $entry['ip'])); + if ($dnsavailable){ + $dns = trim(_getHostName($entry['mac'], $entry['ip'])); + }else + $dns=""; if(trim($dns)) $entry['dnsresolve'] = "$dns"; else |
