Revision 2cf35754
Added by Pi Ba over 10 years ago
| etc/inc/util.inc | ||
|---|---|---|
| 836 | 836 |
|
| 837 | 837 |
/* returns true if $port is a valid TCP/UDP port */ |
| 838 | 838 |
function is_port($port) {
|
| 839 |
if (ctype_digit($port) && ((intval($port) >= 1) && (intval($port) <= 65535))) |
|
| 840 |
return true; |
|
| 839 | 841 |
if (getservbyname($port, "tcp") || getservbyname($port, "udp")) |
| 840 | 842 |
return true; |
| 841 |
if (!ctype_digit($port)) |
|
| 842 |
return false; |
|
| 843 |
else if ((intval($port) < 1) || (intval($port) > 65535)) |
|
| 844 |
return false; |
|
| 845 |
return true; |
|
| 843 |
return false; |
|
| 846 | 844 |
} |
| 847 | 845 |
|
| 848 | 846 |
/* returns true if $portrange is a valid TCP/UDP portrange ("<port>:<port>") */
|
Also available in: Unified diff
speedup 'function is_port($port)' speed by skipping calls to getservbyname when possible