<?php
/*
* Copyright (C) 2005-2019 IP2Location.com
* All Rights Reserved
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, either
* version 3 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace IP2Location;
/**
* IP2Location database class
*
*/
class Database {
/**
* Current module's version
*
* @var string
*/
const VERSION = '8.1.0';
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Error field constants ///////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Unsupported field message
*
* @var string
*/
const FIELD_NOT_SUPPORTED = 'This parameter is unavailable in selected .BIN data file. Please upgrade.';
/**
* Unknown field message
*
* @var string
*/
const FIELD_NOT_KNOWN = 'This parameter is inexistent. Please verify.';
/**
* Invalid IP address message
*
* @var string
*/
const INVALID_IP_ADDRESS = 'Invalid IP address.';
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Field selection constants ///////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Country code (ISO 3166-1 Alpha 2)
*
* @var int
*/
const COUNTRY_CODE = 1;
/**
* Country name
*
* @var int
*/
const COUNTRY_NAME = 2;
/**
* Region name
*
* @var int
*/
const REGION_NAME = 3;
/**
* City name
*
* @var int
*/
const CITY_NAME = 4;
/**
* Latitude
*
* @var int
*/
const LATITUDE = 5;
/**
* Longitude
*
* @var int
*/
const LONGITUDE = 6;
/**
* ISP name
*
* @var int
*/
const ISP = 7;
/**
* Domain name
*
* @var int
*/
const DOMAIN_NAME = 8;
/**
* Zip code
*
* @var int
*/
const ZIP_CODE = 9;
/**
* Time zone
*
* @var int
*/
const TIME_ZONE = 10;
/**
* Net speed
*
* @var int
*/
const NET_SPEED = 11;
/**
* IDD code
*
* @var int
*/
const IDD_CODE = 12;
/**
* Area code
*
* @var int
*/
const AREA_CODE = 13;
/**
* Weather station code
*
* @var int
*/
const WEATHER_STATION_CODE = 14;
/**
* Weather station name
*
* @var int
*/
const WEATHER_STATION_NAME = 15;
/**
* Mobile Country Code
*
* @var int
*/
const MCC = 16;
/**
* Mobile Network Code
*
* @var int
*/
const MNC = 17;
/**
* Mobile carrier name
*
* @var int
*/
const MOBILE_CARRIER_NAME = 18;
/**
* Elevation
*
* @var int
*/
const ELEVATION = 19;
/**
* Usage type
*
* @var int
*/
const USAGE_TYPE = 20;
/**
* Country name and code
*
* @var int
*/
const COUNTRY = 101;
/**
* Latitude and Longitude
*
* @var int
*/
const COORDINATES = 102;
/**
* IDD and area codes
*
* @var int
*/
const IDD_AREA = 103;
/**
* Weather station name and code
*
* @var int
*/
const WEATHER_STATION = 104;
/**
* MCC, MNC, and mobile carrier name
*
* @var int
*/
const MCC_MNC_MOBILE_CARRIER_NAME = 105;
/**
* All fields at once
*
* @var int
*/
const ALL = 1001;
/**
* Include the IP address of the looked up IP address
*
* @var int
*/
const IP_ADDRESS = 1002;
/**
* Include the IP version of the looked up IP address
*
* @var int
*/
const IP_VERSION = 1003;
/**
* Include the IP number of the looked up IP address
*
* @var int
*/
const IP_NUMBER = 1004;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Exception code constants ////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Generic exception code
*
* @var int
*/
const EXCEPTION = 10000;
/**
* No shmop extension found
*
* @var int
*/
const EXCEPTION_NO_SHMOP = 10001;
/**
* Failed to open shmop memory segment for reading
*
* @var int
*/
const EXCEPTION_SHMOP_READING_FAILED = 10002;
/**
* Failed to open shmop memory segment for writing
*
* @var int
*/
const EXCEPTION_SHMOP_WRITING_FAILED = 10003;
/**
* Failed to create shmop memory segment
*
* @var int
*/
const EXCEPTION_SHMOP_CREATE_FAILED = 10004;
/**
* The specified database file was not found
*
* @var int
*/
const EXCEPTION_DBFILE_NOT_FOUND = 10005;
/**
* Not enough memory to load database file
*
* @var int
*/
const EXCEPTION_NO_MEMORY = 10006;
/**
* No candidate databse files found
*
* @var int
*/
const EXCEPTION_NO_CANDIDATES = 10007;
/**
* Failed to open database file
*
* @var int
*/
const EXCEPTION_FILE_OPEN_FAILED = 10008;
/**
* Failed to determine the current path
*
* @var int
*/
const EXCEPTION_NO_PATH = 10009;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Caching method constants ////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Directly read from the databse file
*
* @var int
*/
const FILE_IO = 100001;
/**
* Read the whole database into a variable for caching
*
* @var int
*/
const MEMORY_CACHE = 100002;
/**
* Use shared memory objects for caching
*
* @var int
*/
const SHARED_MEMORY = 100003;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Shared memory constants /////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Share memory segment's permissions (for creation)
*
* @var int
*/
const SHM_PERMS = 0600;
/**
* Number of bytes to read/write at a time in order to load the shared memory cache (512k)
*
* @var int
*/
const SHM_CHUNK_SIZE = 524288;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Static data /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Column offset mapping
*
* Each entry contains an array mapping databse version (0--23) to offset within a record.
* A value of 0 means the column is not present in the given database version.
*
* @access private
* @static
* @var array
*/
private static $columns = [
self::COUNTRY_CODE => [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8],
self::COUNTRY_NAME => [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8],
self::REGION_NAME => [0, 0, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12],
self::CITY_NAME => [0, 0, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16],
self::LATITUDE => [0, 0, 0, 0, 20, 20, 0, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20],
self::LONGITUDE => [0, 0, 0, 0, 24, 24, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24],
self::ISP => [0, 12, 0, 20, 0, 28, 20, 28, 0, 32, 0, 36, 0, 36, 0, 36, 0, 36, 28, 36, 0, 36, 28, 36],
self::DOMAIN_NAME => [0, 0, 0, 0, 0, 0, 24, 32, 0, 36, 0, 40, 0, 40, 0, 40, 0, 40, 32, 40, 0, 40, 32, 40],
self::ZIP_CODE => [0, 0, 0, 0, 0, 0, 0, 0, 28, 28, 28, 28, 0, 28, 28, 28, 0, 28, 0, 28, 28, 28, 0, 28],
self::TIME_ZONE => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 32, 28, 32, 32, 32, 28, 32, 0, 32, 32, 32, 0, 32],
self::NET_SPEED => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 44, 0, 44, 32, 44, 0, 44, 0, 44, 0, 44],
self::IDD_CODE => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 36, 48, 0, 48, 0, 48, 36, 48, 0, 48],
self::AREA_CODE => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 52, 0, 52, 0, 52, 40, 52, 0, 52],
self::WEATHER_STATION_CODE => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 36, 56, 0, 56, 0, 56, 0, 56],
self::WEATHER_STATION_NAME => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 60, 0, 60, 0, 60, 0, 60],
self::MCC => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 36, 64, 0, 64, 36, 64],
self::MNC => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 68, 0, 68, 40, 68],
self::MOBILE_CARRIER_NAME => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 44, 72, 0, 72, 44, 72],
self::ELEVATION => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 44, 76, 0, 76],
self::USAGE_TYPE => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48, 80],
];
/**
* Column name mapping
*
* @access private
* @static
* @var array
*/
private static $names = [
self::COUNTRY_CODE => 'countryCode',
self::COUNTRY_NAME => 'countryName',
self::REGION_NAME => 'regionName',
self::CITY_NAME => 'cityName',
self::LATITUDE => 'latitude',
self::LONGITUDE => 'longitude',
self::ISP => 'isp',
self::DOMAIN_NAME => 'domainName',
self::ZIP_CODE => 'zipCode',
self::TIME_ZONE => 'timeZone',
self::NET_SPEED => 'netSpeed',
self::IDD_CODE => 'iddCode',
self::AREA_CODE => 'areaCode',
self::WEATHER_STATION_CODE => 'weatherStationCode',
self::WEATHER_STATION_NAME => 'weatherStationName',
self::MCC => 'mcc',
self::MNC => 'mnc',
self::MOBILE_CARRIER_NAME => 'mobileCarrierName',
self::ELEVATION => 'elevation',
self::USAGE_TYPE => 'usageType',
self::IP_ADDRESS => 'ipAddress',
self::IP_VERSION => 'ipVersion',
self::IP_NUMBER => 'ipNumber',
];
/**
* Database names, in order of preference for file lookup
*
* @var array
*/
private static $databases = [
// IPv4 databases
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE-ELEVATION-USAGETYPE',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP-DOMAIN-MOBILE-USAGETYPE',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE-ELEVATION',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-AREACODE-ELEVATION',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP-DOMAIN-MOBILE',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-NETSPEED-WEATHER',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-AREACODE',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-TIMEZONE-NETSPEED',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-ISP-DOMAIN',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP-DOMAIN',
'IP-COUNTRY-REGION-CITY-ISP-DOMAIN',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP',
'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE',
'IP-COUNTRY-REGION-CITY-ISP',
'IP-COUNTRY-REGION-CITY',
'IP-COUNTRY-ISP',
'IP-COUNTRY',
// IPv6 databases
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE-ELEVATION-USAGETYPE',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP-DOMAIN-MOBILE-USAGETYPE',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE-ELEVATION',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-AREACODE-ELEVATION',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP-DOMAIN-MOBILE',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-NETSPEED-WEATHER',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-AREACODE',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-TIMEZONE-NETSPEED',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-ISP-DOMAIN',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP-DOMAIN',
'IPV6-COUNTRY-REGION-CITY-ISP-DOMAIN',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP',
'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE',
'IPV6-COUNTRY-REGION-CITY-ISP',
'IPV6-COUNTRY-REGION-CITY',
'IPV6-COUNTRY-ISP',
'IPV6-COUNTRY',
];
/**
* Static memory buffer to use for MEMORY_CACHE mode, the keys will be BIN filenames and the values their contents
*
* @access private
* @static
* @var array
*/
private static $buffer = [];
/**
* The machine's float size
*
* @access private
* @static
* @var int
*/
private static $floatSize = null;
/**
* The configured memory limit
*
* @access private
* @static
* @var int
*/
private static $memoryLimit = null;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Caching backend controls ////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Caching mode to use (one of FILE_IO, MEMORY_CACHE, or SHARED_MEMORY)
*
* @access private
* @var int
*/
private $mode;
/**
* File pointer to use for FILE_IO mode, BIN filename for MEMORY_CACHE mode, or shared memory id to use for SHARED_MEMORY mode
*
* @access private
* @var resource|int|false
*/
private $resource = false;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Database metadata ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Database's compilation date
*
* @access private
* @var int
*/
private $date;
/**
* Database's type (0--23)
*
* @access private
* @var int
*/
private $type;
/**
* Database's register width (as an array mapping 4 to IPv4 width, and 6 to IPv6 width)
*
* @access private
* @var array
*/
private $columnWidth = [];
/**
* Database's pointer offset (as an array mapping 4 to IPv4 offset, and 6 to IPv6 offset)
*
* @access private
* @var array
*/
private $offset = [];
/**
* Amount of IP address ranges the database contains (as an array mapping 4 to IPv4 count, and 6 to IPv6 count)
*
* @access private
* @var array
*/
private $ipCount = [];
/**
* Offset withing the database where IP data begins (as an array mapping 4 to IPv4 base, and 6 to IPv6 base)
*
* @access private
* @var array
*/
private $ipBase = [];
//hjlim
private $indexBaseAddr = [];
private $year;
private $month;
private $day;
// This variable will be used to hold the raw row of columns's positions
private $raw_positions_row;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Default fields //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Default fields to return during lookup
*
* @access private
* @var int|array
*/
private $defaultFields = self::ALL;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Administrative public interface /////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Constructor
*
* @access public
* @param string $file Filename of the BIN database to load
* @param int $mode Caching mode (one of FILE_IO, MEMORY_CACHE, or SHARED_MEMORY)
* @throws \Exception
*/
public function __construct($file = null, $mode = self::FILE_IO, $defaultFields = self::ALL) {
// find the referred file and its size
$rfile = self::findFile($file);
$size = filesize($rfile);
// initialize caching backend
switch ($mode) {
case self::SHARED_MEMORY:
// verify the shmop extension is loaded
if (!extension_loaded('shmop')) {
throw new \Exception(__CLASS__ . ": Please make sure your PHP setup has the 'shmop' extension enabled.", self::EXCEPTION_NO_SHMOP);
}
$limit = self::getMemoryLimit();
if (false !== $limit && $size > $limit) {
throw new \Exception(__CLASS__ . ": Insufficient memory to load file '{$rfile}'.", self::EXCEPTION_NO_MEMORY);
}
$this->mode = self::SHARED_MEMORY;
$shmKey = self::getShmKey($rfile);
// try to open the shared memory segment
$this->resource = @shmop_open($shmKey, 'a', 0, 0);
if (false === $this->resource) {
// the segment did not exist, create it and load the database into it
$fp = fopen($rfile, 'rb');
if (false === $fp) {
throw new \Exception(__CLASS__ . ": Unable to open file '{$rfile}'.", self::EXCEPTION_FILE_OPEN_FAILED);
}
// try to open the memory segment for exclusive access
$shmId = @shmop_open($shmKey, 'n', self::SHM_PERMS, $size);
if (false === $shmId) {
throw new \Exception(__CLASS__ . ": Unable to create shared memory block '{$shmKey}'.", self::EXCEPTION_SHMOP_CREATE_FAILED);
}
// load SHM_CHUNK_SIZE bytes at a time
$pointer = 0;
while ($pointer < $size) {
$buf = fread($fp, self::SHM_CHUNK_SIZE);
shmop_write($shmId, $buf, $pointer);
$pointer += self::SHM_CHUNK_SIZE;
}
shmop_close($shmId);
fclose($fp);
// now open the memory segment for readonly access
$this->resource = @shmop_open($shmKey, 'a', 0, 0);
if (false === $this->resource) {
throw new \Exception(__CLASS__ . ": Unable to access shared memory block '{$shmKey}' for reading.", self::EXCEPTION_SHMOP_READING_FAILED);
}
}
break;
case self::FILE_IO:
$this->mode = self::FILE_IO;
$this->resource = @fopen($rfile, 'rb');
if (false === $this->resource) {
throw new \Exception(__CLASS__ . ": Unable to open file '{$rfile}'.", self::EXCEPTION_FILE_OPEN_FAILED);
}
break;
case self::MEMORY_CACHE:
$this->mode = self::MEMORY_CACHE;
$this->resource = $rfile;
if (!array_key_exists($rfile, self::$buffer)) {
$limit = self::getMemoryLimit();
if (false !== $limit && $size > $limit) {
throw new \Exception(__CLASS__ . ": Insufficient memory to load file '{$rfile}'.", self::EXCEPTION_NO_MEMORY);
}
self::$buffer[$rfile] = @file_get_contents($rfile);
if (false === self::$buffer[$rfile]) {
throw new \Exception(__CLASS__ . ": Unable to open file '{$rfile}'.", self::EXCEPTION_FILE_OPEN_FAILED);
}
}
break;
default:
}
// determine the platform's float size
//
// NB: this should be a constant instead, and some unpack / typebanging magic
// should be used to accomodate different float sizes, but, as the libreary
// is written, this is the sanest thing to do anyway
//
if (null === self::$floatSize) {
self::$floatSize = strlen(pack('f', M_PI));
}
// set default fields to retrieve
$this->defaultFields = $defaultFields;
// extract database metadata
$this->type = $this->readByte(1) - 1;
$this->columnWidth[4] = $this->readByte(2) * 4;
$this->columnWidth[6] = $this->columnWidth[4] + 12;
$this->offset[4] = -4;
$this->offset[6] = 8;
//
$this->year = 2000 + $this->readByte(3);
$this->month = $this->readByte(4);
$this->day = $this->readByte(5);
$this->date = date('Y-m-d', strtotime("{$this->year}-{$this->month}-{$this->day}"));
//
$this->ipCount[4] = $this->readWord(6);
$this->ipBase[4] = $this->readWord(10); //hjlim readword
$this->ipCount[6] = $this->readWord(14);
$this->ipBase[6] = $this->readWord(18);
$this->indexBaseAddr[4] = $this->readWord(22); //hjlim
$this->indexBaseAddr[6] = $this->readWord(26); //hjlim
}
/**
* Destructor
*
* @access public
*/
public function __destruct() {
switch ($this->mode) {
case self::FILE_IO:
// free the file pointer
if (false !== $this->resource) {
fclose($this->resource);
$this->resource = false;
}
break;
case self::SHARED_MEMORY:
// detach from the memory segment
if (false !== $this->resource) {
shmop_close($this->resource);
$this->resource = false;
}
break;
}
}
/**
* Tear down a shared memory segment created for the given file
*
* @access public
* @static
* @param string $file Filename of the BIN database whise segment must be deleted
* @throws \Exception
*/
public static function shmTeardown($file) {
// verify the shmop extension is loaded
if (!extension_loaded('shmop')) {
throw new \Exception(__CLASS__ . ": Please make sure your PHP setup has the 'shmop' extension enabled.", self::EXCEPTION_NO_SHMOP);
}
// Get actual file path
$rfile = realpath($file);
// If the file cannot be found, except away
if (false === $rfile) {
throw new \Exception(__CLASS__ . ": Database file '{$file}' does not seem to exist.", self::EXCEPTION_DBFILE_NOT_FOUND);
}
$shmKey = self::getShmKey($rfile);
// Try to open the memory segment for writing
$shmId = @shmop_open($shmKey, 'w', 0, 0);
if (false === $shmId) {
throw new \Exception(__CLASS__ . ": Unable to access shared memory block '{$shmKey}' for writing.", self::EXCEPTION_SHMOP_WRITING_FAILED);
}
// Delete and close the descriptor
shmop_delete($shmId);
shmop_close($shmId);
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Static tools ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Get memory limit from the current PHP settings (return false if no memory limit set)
*
* @access private
* @static
* @return int|boolean
*/
private static function getMemoryLimit() {
// Get values if no cache
if (null === self::$memoryLimit) {
$limit = ini_get('memory_limit');
// Feal with defaults
if ('' === (string) $limit) {
$limit = '128M';
}
$value = (int) $limit;
// Deal with "no-limit"
if ($value < 0) {
$value = false;
} else {
// Deal with shorthand bytes
switch (strtoupper(substr($limit, -1))) {
case 'G': $value *= 1024;
case 'M': $value *= 1024;
case 'K': $value *= 1024;
}
}
self::$memoryLimit = $value;
}
return self::$memoryLimit;
}
/**
* Return the realpath of the given file or look for the first matching database option
*
* @param string $file File to try to find, or null to try the databases in turn on the current file's path
* @return string
* @throws \Exception
*/
private static function findFile($file = null) {
if (null !== $file) {
// Get actual file path
$rfile = realpath($file);
// If the file cannot be found, except away
if (false === $rfile) {
throw new \Exception(__CLASS__ . ": Database file '{$file}' does not seem to exist.", self::EXCEPTION_DBFILE_NOT_FOUND);
}
return $rfile;
} else {
// Try to get current path
$current = realpath(dirname(__FILE__));
if (false === $current) {
throw new \Exception(__CLASS__ . ": Cannot determine current path.", self::EXCEPTION_NO_PATH);
}
// Try each database in turn
foreach (self::$databases as $database) {
$rfile = realpath("{$current}/{$database}.BIN");
if (false !== $rfile) {
return $rfile;
}
}
// No candidates found
throw new \Exception(__CLASS__ . ": No candidate database files found.", self::EXCEPTION_NO_CANDIDATES);
}
}
/**
* Make the given number positive by wrapping it to 8 bit values
*
* @access private
* @static
* @param int $x Number to wrap
* @return int
*/
private static function wrap8($x) {
return $x + ($x < 0 ? 256 : 0);
}
/**
* Make the given number positive by wrapping it to 32 bit values
*
* @access private
* @static
* @param int $x Number to wrap
* @return int
*/
private static function wrap32($x) {
return $x + ($x < 0 ? 4294967296 : 0);
}
/**
* Generate a unique and repeatable shared memory key for each instance to use
*
* @access private
* @static
* @param string $filename Filename of the BIN file
* @return int
*/
private static function getShmKey($filename) {
// This will create a shared memory key that deterministically depends only on
// the current file's path and the BIN file's path
return (int) sprintf('%u', self::wrap32(crc32(__FILE__ . ':' . $filename)));
}
/**
* Determine whether the given IP number of the given version lies between the given bounds
*
* This function will return 0 if the given ip number falls within the given bounds
* for the given version, -1 if it falls below, and 1 if it falls above.
*
* @access private
* @static
* @param int $version IP version to use (either 4 or 6)
* @param int|string $ip IP number to check (int for IPv4, string for IPv6)
* @param int|string $low Lower bound (int for IPv4, string for IPv6)
* @param int|string $high Uppoer bound (int for IPv4, string for IPv6)
* @return int
*/
private static function ipBetween($version, $ip, $low, $high) {
if (4 === $version) {
// Use normal PHP ints
if ($low <= $ip) {
if ($ip < $high) {
return 0;
} else {
return 1;
}
} else {
return -1;
}
} else {
// Use BCMath
if (bccomp($low, $ip, 0) <= 0) {
if (bccomp($ip, $high, 0) <= -1) {
return 0;
} else {
return 1;
}
} else {
return -1;
}
}
}
/**
* Get the IP version and number of the given IP address
*
* This method will return an array, whose components will be:
* - first: 4 if the given IP address is an IPv4 one, 6 if it's an IPv6 one,
* or fase if it's neither.
* - second: the IP address' number if its version is 4, the number string if
* its version is 6, false otherwise.
*
* @access private
* @static
* @param string $ip IP address to extract the version and number for
* @return array
*/
private static function ipVersionAndNumber($ip) {
if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
return [4, sprintf('%u', ip2long($ip))];
} elseif (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
$result = 0;
foreach (str_split(bin2hex(inet_pton($ip)), 8) as $word) {
$result = bcadd(bcmul($result, '4294967296', 0), self::wrap32(hexdec($word)), 0);
}
return [6, $result];
} else {
// Invalid IP address, return falses
return [false, false];
}
}
/**
* Return the decimal string representing the binary data given
*
* @access private
* @static
* @param string $data Binary data to parse
* @return string
*/
private static function bcBin2Dec($data) {
$parts = array(
unpack('V', substr($data, 12, 4)),
unpack('V', substr($data, 8, 4)),
unpack('V', substr($data, 4, 4)),
unpack('V', substr($data, 0, 4)),
);
foreach($parts as &$part)
if($part[1] < 0)
$part[1] += 4294967296;
$result = bcadd(bcadd(bcmul($parts[0][1], bcpow(4294967296, 3)), bcmul($parts[1][1], bcpow(4294967296, 2))), bcadd(bcmul($parts[2][1], 4294967296), $parts[3][1]));
return $result;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Caching backend abstraction /////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Low level read function to abstract away the caching mode being used
*
* @access private
* @param int $pos Position from where to start reading
* @param int $len Read this many bytes
* @return string
*/
private function read($pos, $len) {
switch ($this->mode) {
case self::SHARED_MEMORY:
return shmop_read($this->resource, $pos, $len);
case self::MEMORY_CACHE:
return $data = substr(self::$buffer[$this->resource], $pos, $len);
default:
fseek($this->resource, $pos, SEEK_SET);
return fread($this->resource, $len);
}
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Low-level read functions ////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Low level function to fetch a string from the caching backend
*
* @access private
* @param int $pos Position to read from
* @param int $additional Additional offset to apply
* @return string
*/
private function readString($pos, $additional = 0) {
// Get the actual pointer to the string's head by extract from the raw row
$spos = unpack('V', substr($this->raw_positions_row, $pos, 4))[1] + $additional;
// Read as much as the length (first "string" byte) indicates
return $this->read($spos + 1, $this->readByte($spos + 1));
}
/**
* Low level function to fetch a float from the caching backend
*
* @access private
* @param int $pos Position to read from
* @return float
*/
private function readFloat($pos) {
// Unpack a float's size worth of data
return unpack('f', substr($this->raw_positions_row, $pos, self::$floatSize))[1];
}
/**
* Low level function to fetch a quadword (128 bits) from the caching backend
*
* @access private
* @param int $pos Position to read from
* @return string
*/
private function readQuad($pos) {
// Use BCMath ints to get a quad's (128-bit) value
return self::bcBin2Dec($this->read($pos - 1, 16));
}
/**
* Low level function to fetch a word (32 bits) from the caching backend
*
* @access private
* @param int $pos Position to read from
* @return int
*/
private function readWord($pos) {
// Unpack a long's worth of data
return self::wrap32(unpack('V', $this->read($pos - 1, 4))[1]);
}
/**
* Low level function to fetch a byte from the caching backend
*
* @access private
* @param int $pos Position to read from
* @return string
*/
private function readByte($pos) {
// Unpack a byte's worth of data
return self::wrap8(unpack('C', $this->read($pos - 1, 1))[1]);
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// High-level read functions ///////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* High level function to fetch the country name and code
*
* @access private
* @param int|boolean $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return array
*/
private function readCountryNameAndCode($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$countryCode = self::INVALID_IP_ADDRESS;
$countryName = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::COUNTRY_CODE][$this->type]) {
// If the field is not suported, return accordingly
$countryCode = self::FIELD_NOT_SUPPORTED;
$countryName = self::FIELD_NOT_SUPPORTED;
} else {
// Read the country code and name (the name shares the country's pointer,
// but it must be artificially displaced 3 bytes ahead: 2 for the country code, one
// for the country name's length)
$countryCode = $this->readString(self::$columns[self::COUNTRY_CODE][$this->type]);
$countryName = $this->readString(self::$columns[self::COUNTRY_NAME][$this->type], 3);
}
return [$countryName, $countryCode];
}
/**
* High level function to fetch the region name
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return string
*/
private function readRegionName($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$regionName = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::REGION_NAME][$this->type]) {
// If the field is not suported, return accordingly
$regionName = self::FIELD_NOT_SUPPORTED;
} else {
// Read the region name
$regionName = $this->readString(self::$columns[self::REGION_NAME][$this->type]);
}
return $regionName;
}
/**
* High level function to fetch the city name
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return string
*/
private function readCityName($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$cityName = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::CITY_NAME][$this->type]) {
// If the field is not suported, return accordingly
$cityName = self::FIELD_NOT_SUPPORTED;
} else {
// Read the city name
$cityName = $this->readString(self::$columns[self::CITY_NAME][$this->type]);
}
return $cityName;
}
/**
* High level function to fetch the latitude and longitude
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return array
*/
private function readLatitudeAndLongitude($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$latitude = self::INVALID_IP_ADDRESS;
$longitude = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::LATITUDE][$this->type]) {
// If the field is not suported, return accordingly
$latitude = self::FIELD_NOT_SUPPORTED;
$longitude = self::FIELD_NOT_SUPPORTED;
} else {
// Read latitude and longitude
$latitude = round($this->readFloat(self::$columns[self::LATITUDE][$this->type]), 6);
$longitude = round($this->readFloat(self::$columns[self::LONGITUDE][$this->type]), 6);
}
return [$latitude, $longitude];
}
/**
* High level function to fetch the ISP name
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return string
*/
private function readIsp($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$isp = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::ISP][$this->type]) {
// If the field is not suported, return accordingly
$isp = self::FIELD_NOT_SUPPORTED;
} else {
// Read isp name
$isp = $this->readString(self::$columns[self::ISP][$this->type]);
}
return $isp;
}
/**
* High level function to fetch the domain name
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return string
*/
private function readDomainName($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$domainName = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::DOMAIN_NAME][$this->type]) {
// If the field is not suported, return accordingly
$domainName = self::FIELD_NOT_SUPPORTED;
} else {
// Read the domain name
$domainName = $this->readString(self::$columns[self::DOMAIN_NAME][$this->type]);
}
return $domainName;
}
/**
* High level function to fetch the zip code
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return string
*/
private function readZipCode($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$zipCode = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::ZIP_CODE][$this->type]) {
// If the field is not suported, return accordingly
$zipCode = self::FIELD_NOT_SUPPORTED;
} else {
// Read the zip code
$zipCode = $this->readString(self::$columns[self::ZIP_CODE][$this->type]);
}
return $zipCode;
}
/**
* High level function to fetch the time zone
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return string
*/
private function readTimeZone($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$timeZone = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::TIME_ZONE][$this->type]) {
// If the field is not suported, return accordingly
$timeZone = self::FIELD_NOT_SUPPORTED;
} else {
// Read the time zone
$timeZone = $this->readString(self::$columns[self::TIME_ZONE][$this->type]);
}
return $timeZone;
}
/**
* High level function to fetch the net speed
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return string
*/
private function readNetSpeed($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$netSpeed = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::NET_SPEED][$this->type]) {
// If the field is not suported, return accordingly
$netSpeed = self::FIELD_NOT_SUPPORTED;
} else {
// Read the net speed
$netSpeed = $this->readString(self::$columns[self::NET_SPEED][$this->type]);
}
return $netSpeed;
}
/**
* High level function to fetch the IDD and area codes
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return array
*/
private function readIddAndAreaCodes($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$iddCode = self::INVALID_IP_ADDRESS;
$areaCode = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::IDD_CODE][$this->type]) {
// If the field is not suported, return accordingly
$iddCode = self::FIELD_NOT_SUPPORTED;
$areaCode = self::FIELD_NOT_SUPPORTED;
} else {
// Read IDD and area codes
$iddCode = $this->readString(self::$columns[self::IDD_CODE][$this->type]);
$areaCode = $this->readString(self::$columns[self::AREA_CODE][$this->type]);
}
return [$iddCode, $areaCode];
}
/**
* High level function to fetch the weather station name and code
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return array
*/
private function readWeatherStationNameAndCode($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$weatherStationName = self::INVALID_IP_ADDRESS;
$weatherStationCode = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::WEATHER_STATION_NAME][$this->type]) {
// If the field is not suported, return accordingly
$weatherStationName = self::FIELD_NOT_SUPPORTED;
$weatherStationCode = self::FIELD_NOT_SUPPORTED;
} else {
// Read weather station name and code
$weatherStationName = $this->readString(self::$columns[self::WEATHER_STATION_NAME][$this->type]);
$weatherStationCode = $this->readString(self::$columns[self::WEATHER_STATION_CODE][$this->type]);
}
return [$weatherStationName, $weatherStationCode];
}
/**
* High level function to fetch the MCC, MNC, and mobile carrier name
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return array
*/
private function readMccMncAndMobileCarrierName($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$mcc = self::INVALID_IP_ADDRESS;
$mnc = self::INVALID_IP_ADDRESS;
$mobileCarrierName = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::MCC][$this->type]) {
// If the field is not suported, return accordingly
$mcc = self::FIELD_NOT_SUPPORTED;
$mnc = self::FIELD_NOT_SUPPORTED;
$mobileCarrierName = self::FIELD_NOT_SUPPORTED;
} else {
// Read MCC, MNC, and mobile carrier name
$mcc = $this->readString(self::$columns[self::MCC][$this->type]);
$mnc = $this->readString(self::$columns[self::MNC][$this->type]);
$mobileCarrierName = $this->readString(self::$columns[self::MOBILE_CARRIER_NAME][$this->type]);
}
return [$mcc, $mnc, $mobileCarrierName];
}
/**
* High level function to fetch the elevation
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return string
*/
private function readElevation($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$elevation = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::ELEVATION][$this->type]) {
// If the field is not suported, return accordingly
$elevation = self::FIELD_NOT_SUPPORTED;
} else {
// Read the elevation
$elevation = $this->readString(self::$columns[self::ELEVATION][$this->type]);
}
return $elevation;
}
/**
* High level function to fetch the usage type
*
* @access private
* @param int $pointer Position to read from, if false, return self::INVALID_IP_ADDRESS
* @return string
*/
private function readUsageType($pointer) {
if (false === $pointer) {
// Deal with invalid IPs
$usageType = self::INVALID_IP_ADDRESS;
} elseif (0 === self::$columns[self::USAGE_TYPE][$this->type]) {
// If the field is not suported, return accordingly
$usageType = self::FIELD_NOT_SUPPORTED;
} else {
$usageType = $this->readString(self::$columns[self::USAGE_TYPE][$this->type]);
}
return $usageType;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Binary search and support functions /////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* High level fucntion to read an IP address of the given version
*
* @access private
* @param int $version IP version to read (either 4 or 6, returns false on anything else)
* @param int $pos Position to read from
* @return int|string|boolean
*/
private function readIp($version, $pos) {
if (4 === $version) {
// Read a standard PHP int
return self::wrap32($this->readWord($pos));
} elseif (6 === $version) {
// Read as BCMath int (quad)
return $this->readQuad($pos);
} else {
// unrecognized
return false;
}
}
/**
* Perform a binary search on the given IP number and return a pointer to its record
*
* @access private
* @param int $version IP version to use for searching
* @param int $ipNumber IP number to look for
* @return int|boolean
*/
private function binSearch($version, $ipNumber, $cidr=false) {
if (false === $version) {
// unrecognized version
return false;
}
// initialize fields
$base = $this->ipBase[$version];
$offset = $this->offset[$version];
$width = $this->columnWidth[$version];
$high = $this->ipCount[$version];
$low = 0;
//hjlim
$indexBaseStart = $this->indexBaseAddr[$version];
if ($indexBaseStart > 0){
$indexPos = 0;
switch($version){
case 4:
$ipNum1_2 = intval($ipNumber / 65536);
$indexPos = $indexBaseStart + ($ipNum1_2 << 3);
break;
case 6:
$ipNum1 = intval(bcdiv($ipNumber, bcpow('2', '112')));
$indexPos = $indexBaseStart + ($ipNum1 << 3);
break;
default:
return false;
}
$low = $this->readWord($indexPos);
$high = $this->readWord($indexPos + 4);
}
// as long as we can narrow down the search...
while ($low <= $high) {
$mid = (int) ($low + (($high - $low) >> 1));
// Read IP ranges to get boundaries
$ip_from = $this->readIp($version, $base + $width * $mid);
$ip_to = $this->readIp($version, $base + $width * ($mid + 1));
// determine whether to return, repeat on the lower half, or repeat on the upper half
switch (self::ipBetween($version, $ipNumber, $ip_from, $ip_to)) {
case 0:
return ($cidr) ? array($ip_from, $ip_to) : $base + $offset + $mid * $width;
case -1:
$high = $mid - 1;
break;
case 1:
$low = $mid + 1;
break;
}
}
// nothing found
return false;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Public interface ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Get the database's compilation date as a string of the form 'YYYY-MM-DD'
*
* @access public
* @return string
*/
public function getDate() {
return $this->date;
}
/**
* Get the database's type (1--24)
*
* @access public
* @return int
*/
public function getType() {
return $this->type + 1;
}
/**
* Return this database's available fields
*
* @access public
* @param boolean $asNames Whether to return the mapped names intead of numbered constants
* @return array
*/
public function getFields($asNames = false) {
$result = array_keys(array_filter(self::$columns, function ($field) {
return 0 !== $field[$this->type];
}));
if ($asNames) {
$return = [];
foreach ($result as $field) {
$return[] = self::$names[$field];
}
return $return;
} else {
return $result;
}
}
/**
* Return the version of module
*/
public function getModuleVersion() {
return self::VERSION;
}
/**
* Return the version of module
*/
public function getDatabaseVersion() {
return $this->year . '.' . $this->month . '.' . $this->day;
}
/**
* This function will look the given IP address up in the database and return the result(s) asked for
*
* If a single, SINGULAR, field is specified, only its mapped value is returned.
* If many fields are given (as an array) or a MULTIPLE field is specified, an
* array whith the returned singular field names as keys and their corresponding
* values is returned.
*
* @access public
* @param string $ip IP address to look up
* @param int|array $fields Field(s) to return
* @param boolean $asNamed Whether to return an associative array instead
* @return mixed|array|boolean
*/
public function lookup($ip, $fields = null, $asNamed = true) {
// extract IP version and number
list($ipVersion, $ipNumber) = self::ipVersionAndNumber($ip);
// perform the binary search proper (if the IP address was invalid, binSearch will return false)
$pointer = $this->binSearch($ipVersion, $ipNumber);
if(empty($pointer)) { return false; }
// apply defaults if needed
if (null === $fields) {
$fields = $this->defaultFields;
}
// Get the entire row based on the pointer value
// The length of the row differs based on the IP version
if (4 === $ipVersion) {
$this->raw_positions_row = $this->read($pointer - 1, $this->columnWidth[4] + 4);
} elseif (6 === $ipVersion) {
$this->raw_positions_row = $this->read($pointer - 1, $this->columnWidth[6]);
}
// turn fields into an array in case it wasn't already
$ifields = (array) $fields;
// add fields if needed
if (in_array(self::ALL, $ifields)) {
$ifields[] = self::REGION_NAME;
$ifields[] = self::CITY_NAME;
$ifields[] = self::ISP;
$ifields[] = self::DOMAIN_NAME;
$ifields[] = self::ZIP_CODE;
$ifields[] = self::TIME_ZONE;
$ifields[] = self::NET_SPEED;
$ifields[] = self::ELEVATION;
$ifields[] = self::USAGE_TYPE;
//
$ifields[] = self::COUNTRY;
$ifields[] = self::COORDINATES;
$ifields[] = self::IDD_AREA;
$ifields[] = self::WEATHER_STATION;
$ifields[] = self::MCC_MNC_MOBILE_CARRIER_NAME;
//
$ifields[] = self::IP_ADDRESS;
$ifields[] = self::IP_VERSION;
$ifields[] = self::IP_NUMBER;
}
// turn into a uniquely-valued array the fast way
// (see: http://php.net/manual/en/function.array-unique.php#77743)
$afields = array_keys(array_flip($ifields));
// sorting them in reverse order warrants that by the time we get to
// SINGULAR fields, its MULTIPLE counterparts, if at all present, have
// already been retrieved
rsort($afields);
// maintain a list of already retrieved fields to avoid doing it twice
$done = [
self::COUNTRY_CODE => false,
self::COUNTRY_NAME => false,
self::REGION_NAME => false,
self::CITY_NAME => false,
self::LATITUDE => false,
self::LONGITUDE => false,
self::ISP => false,
self::DOMAIN_NAME => false,
self::ZIP_CODE => false,
self::TIME_ZONE => false,
self::NET_SPEED => false,
self::IDD_CODE => false,
self::AREA_CODE => false,
self::WEATHER_STATION_CODE => false,
self::WEATHER_STATION_NAME => false,
self::MCC => false,
self::MNC => false,
self::MOBILE_CARRIER_NAME => false,
self::ELEVATION => false,
self::USAGE_TYPE => false,
//
self::COUNTRY => false,
self::COORDINATES => false,
self::IDD_AREA => false,
self::WEATHER_STATION => false,
self::MCC_MNC_MOBILE_CARRIER_NAME => false,
//
self::IP_ADDRESS => false,
self::IP_VERSION => false,
self::IP_NUMBER => false,
];
// results are empty to begin with
$results = [];
// treat each field in turn
foreach ($afields as $afield) {
switch ($afield) {
// purposefully ignore self::ALL, we already dealt with it
case self::ALL: break;
//
case self::COUNTRY:
if (!$done[self::COUNTRY]) {
list($results[self::COUNTRY_NAME], $results[self::COUNTRY_CODE]) = $this->readCountryNameAndCode($pointer);
$done[self::COUNTRY] = true;
$done[self::COUNTRY_CODE] = true;
$done[self::COUNTRY_NAME] = true;
}
break;
case self::COORDINATES:
if (!$done[self::COORDINATES]) {
list($results[self::LATITUDE], $results[self::LONGITUDE]) = $this->readLatitudeAndLongitude($pointer);
$done[self::COORDINATES] = true;
$done[self::LATITUDE] = true;
$done[self::LONGITUDE] = true;
}
break;
case self::IDD_AREA:
if (!$done[self::IDD_AREA]) {
list($results[self::IDD_CODE], $results[self::AREA_CODE]) = $this->readIddAndAreaCodes($pointer);
$done[self::IDD_AREA] = true;
$done[self::IDD_CODE] = true;
$done[self::AREA_CODE] = true;
}
break;
case self::WEATHER_STATION:
if (!$done[self::WEATHER_STATION]) {
list($results[self::WEATHER_STATION_NAME], $results[self::WEATHER_STATION_CODE]) = $this->readWeatherStationNameAndCode($pointer);
$done[self::WEATHER_STATION] = true;
$done[self::WEATHER_STATION_NAME] = true;
$done[self::WEATHER_STATION_CODE] = true;
}
break;
case self::MCC_MNC_MOBILE_CARRIER_NAME:
if (!$done[self::MCC_MNC_MOBILE_CARRIER_NAME]) {
list($results[self::MCC], $results[self::MNC], $results[self::MOBILE_CARRIER_NAME]) = $this->readMccMncAndMobileCarrierName($pointer);
$done[self::MCC_MNC_MOBILE_CARRIER_NAME] = true;
$done[self::MCC] = true;
$done[self::MNC] = true;
$done[self::MOBILE_CARRIER_NAME] = true;
}
break;
//
case self::COUNTRY_CODE:
if (!$done[self::COUNTRY_CODE]) {
$results[self::COUNTRY_CODE] = $this->readCountryNameAndCode($pointer)[1];
$done[self::COUNTRY_CODE] = true;
}
break;
case self::COUNTRY_NAME:
if (!$done[self::COUNTRY_NAME]) {
$results[self::COUNTRY_NAME] = $this->readCountryNameAndCode($pointer)[0];
$done[self::COUNTRY_NAME] = true;
}
break;
case self::REGION_NAME:
if (!$done[self::REGION_NAME]) {
$results[self::REGION_NAME] = $this->readRegionName($pointer);
$done[self::REGION_NAME] = true;
}
break;
case self::CITY_NAME:
if (!$done[self::CITY_NAME]) {
$results[self::CITY_NAME] = $this->readCityName($pointer);
$done[self::CITY_NAME] = true;
}
break;
case self::LATITUDE:
if (!$done[self::LATITUDE]) {
$results[self::LATITUDE] = $this->readLatitudeAndLongitude($pointer)[0];
$done[self::LATITUDE] = true;
}
break;
case self::LONGITUDE:
if (!$done[self::LONGITUDE]) {
$results[self::LONGITUDE] = $this->readLatitudeAndLongitude($pointer)[1];
$done[self::LONGITUDE] = true;
}
break;
case self::ISP:
if (!$done[self::ISP]) {
$results[self::ISP] = $this->readIsp($pointer);
$done[self::ISP] = true;
}
break;
case self::DOMAIN_NAME:
if (!$done[self::DOMAIN_NAME]) {
$results[self::DOMAIN_NAME] = $this->readDomainName($pointer);
$done[self::DOMAIN_NAME] = true;
}
break;
case self::ZIP_CODE:
if (!$done[self::ZIP_CODE]) {
$results[self::ZIP_CODE] = $this->readZipCode($pointer);
$done[self::ZIP_CODE] = true;
}
break;
case self::TIME_ZONE:
if (!$done[self::TIME_ZONE]) {
$results[self::TIME_ZONE] = $this->readTimeZone($pointer);
$done[self::TIME_ZONE] = true;
}
break;
case self::NET_SPEED:
if (!$done[self::NET_SPEED]) {
$results[self::NET_SPEED] = $this->readNetSpeed($pointer);
$done[self::NET_SPEED] = true;
}
break;
case self::IDD_CODE:
if (!$done[self::IDD_CODE]) {
$results[self::IDD_CODE] = $this->readIddAndAreaCodes($pointer)[0];
$done[self::IDD_CODE] = true;
}
break;
case self::AREA_CODE:
if (!$done[self::AREA_CODE]) {
$results[self::AREA_CODE] = $this->readIddAndAreaCodes($pointer)[1];
$done[self::AREA_CODE] = true;
}
break;
case self::WEATHER_STATION_CODE:
if (!$done[self::WEATHER_STATION_CODE]) {
$results[self::WEATHER_STATION_CODE] = $this->readWeatherStationNameAndCode($pointer)[1];
$done[self::WEATHER_STATION_CODE] = true;
}
break;
case self::WEATHER_STATION_NAME:
if (!$done[self::WEATHER_STATION_NAME]) {
$results[self::WEATHER_STATION_NAME] = $this->readWeatherStationNameAndCode($pointer)[0];
$done[self::WEATHER_STATION_NAME] = true;
}
break;
case self::MCC:
if (!$done[self::MCC]) {
$results[self::MCC] = $this->readMccMncAndMobileCarrierName($pointer)[0];
$done[self::MCC] = true;
}
break;
case self::MNC:
if (!$done[self::MNC]) {
$results[self::MNC] = $this->readMccMncAndMobileCarrierName($pointer)[1];
$done[self::MNC] = true;
}
break;
case self::MOBILE_CARRIER_NAME:
if (!$done[self::MOBILE_CARRIER_NAME]) {
$results[self::MOBILE_CARRIER_NAME] = $this->readMccMncAndMobileCarrierName($pointer)[2];
$done[self::MOBILE_CARRIER_NAME] = true;
}
break;
case self::ELEVATION:
if (!$done[self::ELEVATION]) {
$results[self::ELEVATION] = $this->readElevation($pointer);
$done[self::ELEVATION] = true;
}
break;
case self::USAGE_TYPE:
if (!$done[self::USAGE_TYPE]) {
$results[self::USAGE_TYPE] = $this->readUsageType($pointer);
$done[self::USAGE_TYPE] = true;
}
break;
//
case self::IP_ADDRESS:
if (!$done[self::IP_ADDRESS]) {
$results[self::IP_ADDRESS] = $ip;
$done[self::IP_ADDRESS] = true;
}
break;
case self::IP_VERSION:
if (!$done[self::IP_VERSION]) {
$results[self::IP_VERSION] = $ipVersion;
$done[self::IP_VERSION] = true;
}
break;
case self::IP_NUMBER:
if (!$done[self::IP_NUMBER]) {
$results[self::IP_NUMBER] = $ipNumber;
$done[self::IP_NUMBER] = true;
}
break;
//
default:
$results[$afield] = self::FIELD_NOT_KNOWN;
}
}
// If we were asked for an array, or we have multiple results to return...
if (is_array($fields) || count($results) > 1) {
// return array
if ($asNamed) {
// apply translations if needed
$return = [];
foreach ($results as $key => $val) {
if (array_key_exists($key, static::$names)) {
$return[static::$names[$key]] = $val;
} else {
$return[$key] = $val;
}
}
return $return;
} else {
return $results;
}
} else {
// return a single value
return array_values($results)[0];
}
}
/**
* For a given IP address, returns the cidr of his sub-network.
*
* For example, calling get_cidr('91.200.12.233') returns '91.200.0.0/13'.
* Useful to setup "Deny From 91.200.0.0/13" in .htaccess file for Apache2
* server against spam.
* */
public function get_cidr($ip) {
// extract IP version and number
list($ipVersion, $ipNumber) = self::ipVersionAndNumber($ip);
// perform the binary search proper (if the IP address was invalid, binSearch will return false)
$resp = $this->binSearch($ipVersion, $ipNumber, true);
if(!empty($resp)) {
list($ip_from, $ip_to) = $resp;
$i=32; $mask=1;
while(($ip_to & $mask) == 0) {
$mask *= 2; $i--;
}
$ip = long2ip($ip_from);
return "$ip/$i";
}
return false;
}
}