private function Reader::findAddressInTree in Smart IP 6.2

Same name and namespace in other branches

1. 7.2 includes/vendor/maxmind-db/reader/src/MaxMind/Db/Reader.php \MaxMind\Db\Reader::findAddressInTree()

1 call to Reader::findAddressInTree()

Reader::get in includes/vendor/maxmind-db/reader/src/MaxMind/Db/Reader.php

Looks up the <code>address</code> in the MaxMind DB.

File

includes/vendor/maxmind-db/reader/src/MaxMind/Db/Reader.php, line 118

Class

Reader

Instances of this class provide a reader for the MaxMind DB format. IP addresses can be looked up using the <code>get</code> method.

Namespace

MaxMind\Db

Code

private function findAddressInTree($ipAddress) {

  // XXX - could simplify. Done as a byte array to ease porting
  $rawAddress = array_merge(unpack('C*', inet_pton($ipAddress)));
  $bitCount = count($rawAddress) * 8;

  // The first node of the tree is always node 0, at the beginning of the
  // value
  $node = $this
    ->startNode($bitCount);
  for ($i = 0; $i < $bitCount; $i++) {
    if ($node >= $this->metadata->nodeCount) {
      break;
    }
    $tempBit = 0xff & $rawAddress[$i >> 3];
    $bit = 1 & $tempBit >> 7 - $i % 8;
    $node = $this
      ->readNode($node, $bit);
  }
  if ($node == $this->metadata->nodeCount) {

    // Record is empty
    return 0;
  }
  elseif ($node > $this->metadata->nodeCount) {

    // Record is a data pointer
    return $node;
  }
  throw new InvalidDatabaseException("Something bad happened");
}