diff options
Diffstat (limited to 'src/etc/inc/util.inc')
| -rw-r--r-- | src/etc/inc/util.inc | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/src/etc/inc/util.inc b/src/etc/inc/util.inc index 418ad51..a205cdb 100644 --- a/src/etc/inc/util.inc +++ b/src/etc/inc/util.inc @@ -1850,24 +1850,23 @@ function alias_expand_urltable($name) { /* obtain MAC address given an IP address by looking at the ARP/NDP table */ function arp_get_mac_by_ip($ip) { - unset($arp_ndp_output); + unset($macaddr); + $retval = 1; switch (is_ipaddr($ip)) { case 4: mwexec("/sbin/ping -c 1 -t 1 " . escapeshellarg($ip), true); - exec("/usr/sbin/arp -n " . escapeshellarg($ip) . " | /usr/bin/awk '{print $4}'", $arp_ndp_output); + $macaddr = exec("/usr/sbin/arp -n " . escapeshellarg($ip) . " | /usr/bin/awk '{print $4}'", $output, $retval); break; case 6: mwexec("/sbin/ping6 -c 1 -X 1 " . escapeshellarg($ip), true); - exec("/usr/sbin/ndp -n " . escapeshellarg($ip) . " | /usr/bin/tail -n+2 | /usr/bin/awk '{print $2}'", $arp_ndp_output); + $macaddr = exec("/usr/sbin/ndp -n " . escapeshellarg($ip) . " | /usr/bin/awk '{print $2}'", $output, $retval); break; } - if ($arp_ndp_output[0]) { - $macaddr = $arp_ndp_output[0]; - if (is_macaddr($macaddr)) { - return $macaddr; - } + if ($retval == 0 && is_macaddr($macaddr)) { + return $macaddr; + } else { + return false; } - return false; } /* return a fieldname that is safe for xml usage */ |
