function _get_record in GeoIP API 6

Same name and namespace in other branches

1. 7 lib/geoipcity.inc \_get_record()

1 call to _get_record()

GeoIP_record_by_addr in lib/geoipcity.inc

File

lib/geoipcity.inc, line 118

Code

function _get_record($gi, $ipnum) {
  $seek_country = _geoip_seek_country($gi, $ipnum);
  if ($seek_country == $gi->databaseSegments) {
    return NULL;
  }

  // workaround php's broken substr, strpos, etc handling with
  // mbstring.func_overload and mbstring.internal_encoding
  $enc = mb_internal_encoding();
  mb_internal_encoding('ISO-8859-1');
  $record_pointer = $seek_country + (2 * $gi->record_length - 1) * $gi->databaseSegments;
  if ($gi->flags & GEOIP_MEMORY_CACHE) {
    $record_buf = substr($gi->memory_buffer, $record_pointer, FULL_RECORD_LENGTH);
  }
  elseif ($gi->flags & GEOIP_SHARED_MEMORY) {
    $record_buf = @shmop_read($gi->shmid, $record_pointer, FULL_RECORD_LENGTH);
  }
  else {
    fseek($gi->filehandle, $record_pointer, SEEK_SET);
    $record_buf = fread($gi->filehandle, FULL_RECORD_LENGTH);
  }
  $record = new geoiprecord();
  $record_buf_pos = 0;
  $char = ord(substr($record_buf, $record_buf_pos, 1));
  $record->country_code = $gi->GEOIP_COUNTRY_CODES[$char];
  $record->country_code3 = $gi->GEOIP_COUNTRY_CODES3[$char];
  $record->country_name = $gi->GEOIP_COUNTRY_NAMES[$char];
  $record->continent_code = $gi->GEOIP_CONTINENT_CODES[$char];
  $record_buf_pos++;
  $str_length = 0;

  // Get region
  $char = ord(substr($record_buf, $record_buf_pos + $str_length, 1));
  while ($char != 0) {
    $str_length++;
    $char = ord(substr($record_buf, $record_buf_pos + $str_length, 1));
  }
  if ($str_length > 0) {
    $record->region = substr($record_buf, $record_buf_pos, $str_length);
  }
  $record_buf_pos += $str_length + 1;
  $str_length = 0;

  // Get city
  $char = ord(substr($record_buf, $record_buf_pos + $str_length, 1));
  while ($char != 0) {
    $str_length++;
    $char = ord(substr($record_buf, $record_buf_pos + $str_length, 1));
  }
  if ($str_length > 0) {
    $record->city = substr($record_buf, $record_buf_pos, $str_length);
  }
  $record_buf_pos += $str_length + 1;
  $str_length = 0;

  // Get postal code
  $char = ord(substr($record_buf, $record_buf_pos + $str_length, 1));
  while ($char != 0) {
    $str_length++;
    $char = ord(substr($record_buf, $record_buf_pos + $str_length, 1));
  }
  if ($str_length > 0) {
    $record->postal_code = substr($record_buf, $record_buf_pos, $str_length);
  }
  $record_buf_pos += $str_length + 1;
  $str_length = 0;

  // Get latitude and longitude
  $latitude = 0;
  $longitude = 0;
  for ($j = 0; $j < 3; ++$j) {
    $char = ord(substr($record_buf, $record_buf_pos++, 1));
    $latitude += $char << $j * 8;
  }
  $record->latitude = $latitude / 10000 - 180;
  for ($j = 0; $j < 3; ++$j) {
    $char = ord(substr($record_buf, $record_buf_pos++, 1));
    $longitude += $char << $j * 8;
  }
  $record->longitude = $longitude / 10000 - 180;
  if (GEOIP_CITY_EDITION_REV1 == $gi->databaseType) {
    $metroarea_combo = 0;
    if ($record->country_code == "US") {
      for ($j = 0; $j < 3; ++$j) {
        $char = ord(substr($record_buf, $record_buf_pos++, 1));
        $metroarea_combo += $char << $j * 8;
      }
      $record->metro_code = $record->dma_code = floor($metroarea_combo / 1000);
      $record->area_code = $metroarea_combo % 1000;
    }
  }
  mb_internal_encoding($enc);
  return $record;
}