function initialize($sAddress, $iPrefix = 0)
{
$iRet = IP6_ERR_OK;
// Address must be a string and prefix must be an integer
if (is_string($sAddress) && is_numeric($iPrefix)) {
// If no prefix was passed it should be in the address, if so split them up
if ($iPrefix == 0) {
$iPosition = strpos($sAddress, "/");
$sTemp = (int) substr($sAddress, $iPosition + 1);
$sAddress = substr($sAddress, 0, $iPosition);
if (is_numeric($sTemp)) {
$iPrefix = $sTemp;
} else {
$iPrefix = 48;
// No prefix was found, just default to 48
}
}
// Check that the address is valid
if (isValidAddr($sAddress) == true) {
// Check that the prefix is in bounds
if ($iPrefix > 0 && $iPrefix <= 64) {
// Reset the level and update the remaining prefix
$this->iLevel = 0;
$this->iRemainingPrefix = 64 - $iPrefix;
// Allocate the base network
$this->cSite = new CNetwork(new CAddress($sAddress), $iPrefix, $this->iLevel);
if (!$this->tSite) {
$iRet = IP6_ERR_OUTOFMEM;
}
} else {
$iRet = IP6_ERR_BADPREFIX;
}
} else {
$iRet = IP6_ERR_BADADDR;
}
} else {
$iRet = IP6_ERR_BADARG;
}
return $iRet;
}
function compressAddr($sAddress)
{
$vRet = IP6_ERR_OK;
$cAddress = new CAddress();
// Address must be a string
if (is_string($sAddress)) {
// Check that the address is valid
if (isValidAddr($sAddress)) {
// Convert the address to a raw address
$vRet = $cAddress . fromStr($sAddress);
if ($vRet == IP6_ERR_OK) {
// Convert the address back to a string and compress it
$vRet = $cAddress->toStr(true);
}
} else {
$vRet = IP6_ERR_BADADDR;
}
} else {
$vRet = IP6_ERR_BADARG;
}
return $vRet;
}
function fromStr($sAddress)
{
$iRet = IP6_ERR_OK;
// Address must be a string
if (is_string($sAddress)) {
// Check if the address is valid
$this->bValid = isValidAddr($sAddress);
if ($this->bValid) {
// Set all segments to 0
for ($i = 0; $i < 8; $i++) {
$iSegments[$i] = 0;
}
// Check if there are omitted segments (compressed address)
$iLength = strlen($sAddress);
$cOmitted = strpos($sAddress, "::");
if ($cOmitted === false) {
// Convert the 8 segments
$sTemp = strtok($sAddress, ":");
for ($i = 0; $i < 8; $i++) {
$this->iSegments[$i] = hexdec($sTemp);
$sTemp = strtok(":");
}
} else {
// Find the start of the omitted group
$iSegment = 0;
$iStart = -1;
for ($i = 0; $i < $iLength; $i++) {
if ($sAddress[$i] == ':') {
$iSegment++;
if ($sAddress[$i + 1] == ':') {
$iStart = $iSegment;
break;
}
}
}
// Find the end of the omitted group
$iSegment = 7;
$iEnd = -1;
for ($i = $iLength - 1; $i >= 0; $i--) {
if ($sAddress[$i] == ':') {
$iSegment--;
if ($sAddress[$i - 1] == ':') {
$iEnd = $iSegment;
break;
}
}
}
// Convert the 8 segments but ignoring the omitted group
$sTemp = strtok($sAddress, ":");
for ($i = 0; $i < 8; $i++) {
if ($sTemp && ($i < $iStart || $i > $iEnd)) {
$this->iSegments[$i] = hexdec($sTemp);
$sTemp = strtok(":");
}
}
}
}
} else {
$iRet = IP6_ERR_BADARG;
}
return $iRet;
}