LDAPNetAddr - extract readable network address from the LDAP encoded networkAddress attribute. Simply pass the networkAddress attribute from an LDAP Query and this function will return a string of "AddrType: " such as "IP: 192.168.1.12"
function LDAPNetAddr ($networkaddress) {
/*
Jay Burrell, Systems & Networks, Mississippi State University
NetAddr - extract readable network address from the LDAP encoded networkAddress attribute.
Novell Docs, see: http://developer.novell.com/ndk/doc/ndslib/schm_enu/data/sdk5624.html#sdk5624
for Address types: http://developer.novell.com/ndk/doc/ndslib/index.html?page=/ndk/doc/ndslib/schm_enu/data/sdk4170.html
LDAP Format, String:
taggedData = uint32String "#" octetstring
byte 0 = uint32String = Address Type: 0= IPX Address; 1 = IP Address
byte 1 = char = "#" - separator
byte 2+ = octetstring - the ordinal value of the address
Note: with eDirectory 8.6.2, the IP address (type 1) returns correctly, however, an IPX address does not seem to. eDir 8.7 may correct this.
*/
$addr = "";
$addrtype = intval(substr($networkaddress, 0, 1));
$networkaddress = substr($networkaddress, 2); // throw away bytes 0 and 1 which should be the addrtype and the "#" separator
$addrtypes = array('IPX', 'IP', 'SDLC', 'Token Ring', 'OSI', 'AppleTalk', 'NetBEUI', 'Socket', 'UDP', 'TCP', 'UDP6', 'TCP6', 'Reserved (12)', 'URL', 'Count');
$len = strlen($networkaddress);
if ($len > 0) {
for ($i=0; $i<$len; $i+=1) {
$byte = substr($networkaddress, $i, 1);
$addr .= ord($byte);
if ($addrtype == 1){ // dot separate IP addresses...
$addr .= ".";
}
}
if ($addrtype == 1) { // strip last period from end of $addr
$addr = substr($addr, 0, strlen($addr)-1);
}
}
else {
$addr .= "address not available.";
}
return ($addrtypes[$addrtype] . ": " . $addr);
}
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