function _common_get_org($gi, $seek_org)
{
$record_pointer = $seek_org + (2 * $gi->record_length - 1) * $gi->databaseSegments;
if ($gi->flags & GEOIP_SHARED_MEMORY) {
$org_buf = @shmop_read($gi->shmid, $record_pointer, MAX_ORG_RECORD_LENGTH);
} else {
fseek($gi->filehandle, $record_pointer, SEEK_SET);
$org_buf = fread($gi->filehandle, MAX_ORG_RECORD_LENGTH);
}
$org_buf = _safe_substr($org_buf, 0, strpos($org_buf, ""));
return $org_buf;
}
public function _geoip_seek_country_v6($ipnum)
{
# arrays from unpack start with offset 1
# yet another php mystery. array_merge work around
# this broken behaviour
$v6vec = array_merge(unpack("C16", $ipnum));
$offset = 0;
for ($depth = 127; $depth >= 0; --$depth) {
if ($this->flags & self::GEOIP_MEMORY_CACHE) {
$buf = _safe_substr($this->memory_buffer, 2 * $this->record_length * $offset, 2 * $this->record_length);
} elseif ($this->flags & self::GEOIP_SHARED_MEMORY) {
$buf = @shmop_read($this->shmid, 2 * $this->record_length * $offset, 2 * $this->record_length);
} else {
$try = fseek($this->filehandle, 2 * $this->record_length * $offset, SEEK_SET) == 0;
if (!$try) {
throw new \Exception("File search error");
}
$buf = fread($this->filehandle, 2 * $this->record_length);
}
$x = array(0, 0);
for ($i = 0; $i < 2; ++$i) {
for ($j = 0; $j < $this->record_length; ++$j) {
$x[$i] += ord($buf[$this->record_length * $i + $j]) << $j * 8;
}
}
$bnum = 127 - $depth;
$idx = $bnum >> 3;
$b_mask = 1 << ($bnum & 7 ^ 7);
if (($v6vec[$idx] & $b_mask) > 0) {
if ($x[1] >= $this->databaseSegments) {
return $x[1];
}
$offset = $x[1];
} else {
if ($x[0] >= $this->databaseSegments) {
return $x[0];
}
$offset = $x[0];
}
}
trigger_error("error traversing database - perhaps it is corrupt?", E_USER_ERROR);
return false;
}
