/
Geolocation.class.php
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/
Geolocation.class.php
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<?php
/**
* IPInfoDB geolocation API class
* http://ipinfodb.com/ip_location_api.php
* Bug report : http://forum.ipinfodb.com/viewforum.php?f=7
* Updated April 17 2010
* @version 1.3
* @author Marc-Andre Caron - IPInfoDB - http://www.ipinfodb.com
* @license http://www.gnu.org/copyleft/lesser.html LGPL
*/
class Geolocation
{
//------------------------------------------------------------
// PROPERTIES
//------------------------------------------------------------
//--Protected properties--//
/**
* The main API domain
* @var string
* @access protected
*/
protected $_apiDomain = 'ipinfodb.com';
/**
* The backup API domain
* @var string
* @access protected
*/
protected $_apiBackupDomain = 'backup.ipinfodb.com';
/**
* The IP array
* @var array
* @access protected
*/
protected $_ips = array();
/**
* The errors array
* @var array
* @access protected
*/
protected $_errors = array();
/**
* The IP geolocation
* @var array
* @access protected
*/
protected $_geolocation = array();
/**
* The IP geolocation
* @var array
* @access protected
*/
protected $_cityPrecision;
/**
* If the server is on IPInfoDB whitelist or not
* @var bool
* @access protected
*/
protected $_whitelist = false;
/**
* Show timezone data or not
* @var array
* @access protected
*/
protected $_showTimezone = false;
//--Constants--//
const IP_QUERY = 'ip_query.php';
const IP_QUERY_COUNTRY = 'ip_query_country.php';
const IP_QUERY2 = 'ip_query2.php';
const IP_QUERY2_COUNTRY = 'ip_query2_country.php';
const IP_ERROR = 'is an invalid IP address (eg : 123.123.123.123)';
const IP_ARRAY_ERROR = 'IPs must be an array (eg : array(123.123.123.123, 124.124.124.124)';
const DOMAIN_ERROR = 'is an invalid domain name (eg : example.com)';
const NONE_SPECIFIED = 'No IP or domain specified';
const CONNECT_ERROR = 'Could not connect to API server. Will try backup server';
const CONNECT_BACKUP_ERROR = 'Could not connect to backup API server.';
//------------------------------------------------------------
// METHODS
//------------------------------------------------------------
//--Public methods--//
/**
* Class constructor
* Set if the query should get city or country precision
* @param bool $cityPrecision True for city precision, false for country precision
* @access public
* @return void
*/
public function __construct($cityPrecision)
{
$this->_cityPrecision = (bool)$cityPrecision;
}
// --------------------------------------------------------------------
/**
* Set IP address
* @param string $ip The ip address
* @param bool $test To test if the IP is valid or not
* @access public
* @return void
*/
public function setIP($ip, $test = false)
{
//Test IP if required
if ($test) {
if (!preg_match('/^(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)(?:[.](?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)){3}$/', $ip)) {
$this->_setError(new Exception($ip . ' ' . self::IP_ERROR));
return;
}
}
$this->_ips[] = $ip;
}
// --------------------------------------------------------------------
/**
* Set multiple IP addresses
* @param array $ips The ip address
* @param bool $test To test if the IP is valid or not
* @access public
* @return void
*/
public function setIPs($ips, $test = false)
{
//Make sure IP list is an array
if (!is_array($ips)) {
$this->_setError(new Exception(self::IP_ARRAY_ERROR));
return;
}
//Test IP if required
if ($test) {
foreach($ips as $ip) {
if (!preg_match('/^(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)(?:[.](?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)){3}$/', $ip)) {
$this->_setError(new Exception($ip . ' ' . self::IP_ERROR));
return;
}
}
}
foreach ($ips as $ip) {
$this->_ips[] = $ip;
}
}
// --------------------------------------------------------------------
/**
* Set domain
* @param string $domain The domain name
* @param bool $test To test if the domain is valid or not
* @access public
* @return void
*/
public function setDomain($domain, $test = false)
{
//Test domain if required
if ($test) {
if (!preg_match ("/^[a-z0-9][a-z0-9\-]+[a-z0-9](\.[a-z]{2,4})+$/i", $domain)) {
$this->_setError(new Exception($domain . ' ' . self::DOMAIN_ERROR));
return;
}
}
$this->_ips[] = gethostbyname($domain);
}
// --------------------------------------------------------------------
/**
* Set file_get_contents timeout
* @param int $timeout Timeout in seconds
* @access public
* @return void
*/
public function setTimeout($timeout)
{
$timeout = (int)$timeout;
if ($timeout > 0) {
ini_set('default_socket_timeout', $timeout);
}
}
// --------------------------------------------------------------------
/**
* Set main query server to US server
* @access public
* @return void
*/
public function useUSServer()
{
$this->_apiBackupDomain = $this->_apiDomain;
$this->_apiDomain = 'us.ipinfodb.com';
}
// --------------------------------------------------------------------
/**
* Set if the server is on the whitelist or not
* @param bool $enabled If the server is on the whitelist or not
* @access public
* @return void
*/
public function setWhitelist($enabled)
{
$this->_whitelist = (bool)$enabled;
}
// --------------------------------------------------------------------
/**
* Show timezone data
* @param bool $val Show timezone data or not
* @access public
* @return void
*/
public function showTimezone($val)
{
$this->_showTimezone = (bool)$val;
}
// --------------------------------------------------------------------
/**
* Get geolocation as an array
* @access public
* @return array
*/
public function getGeoLocation() {
//Make sure IPs and/or domains are specified
if (empty($this->_ips)) {
$this->_setError(new Exception(self::NONE_SPECIFIED));
return array();
}
//Check if ip_query.php or ip_query2.php to be used
$singleLookup = (empty($this->_domains) && (count($this->_ips) == 1)) ? true : false;
switch ($singleLookup) {
case true:
//Use ip_query
$this->_query();
break;
case false:
//Use ip_query2 for domain or multiple lookups
//Split IP array by 25
$k = 0;
$ipsSplit = array();
for ($i=0; $i<count($this->_ips); $i++) {
if (!(($i+1) % 25)) $k++;
$ipsSplit[$k][] = $this->_ips[$i];
}
//Do multiple queries if required
for ($i=0;$i<count($ipsSplit);$i++) {
//Sleep for 0.5s after each request (after 1st one) if not on the whitelist
if (!$this->_whitelist && $i > 0) {
usleep(500000);
}
//Do the request
if (count($ipsSplit[$i])) {
$this->_query2($ipsSplit[$i]);
}
}
//Unset $ipsSplit
unset($ipsSplit);
break;
}
return $this->_geolocation;
}
// --------------------------------------------------------------------
/**
* Get the errors
* @access public
* @return void
*/
public function getErrors() {
return $this->_errors;
}
// --------------------------------------------------------------------
//--protected methods--//
/**
* Single IP query
* @access protected
* @return void
*/
protected function _query() {
//Select the proper API
$api = $this->_cityPrecision ? self::IP_QUERY : self::IP_QUERY_COUNTRY;
//Connect to IPInfoDB
$showTimezone = $this->_showTimezone ? 'true' : 'false';
if (!($d = @file_get_contents("http://" . $this->_apiDomain . "/$api?ip={$this->_ips[0]}&timezone=$showTimezone"))) {
$this->_setError(new Exception(self::CONNECT_ERROR));
//Try backup server
if (!($d = @file_get_contents("http://" . $this->_apiBackupDomain . "/$api?ip={$this->_ips[0]}&timezone=$showTimezone"))) {
$this->_setError(new Exception(self::CONNECT_BACKUP_ERROR));
return;
}
}
try {
$answer = @new SimpleXMLElement($d);
} catch(Exception $e) {
$this->_setError($e);
return;
}
foreach($answer as $field => $val) {
$this->_geolocation[0][(string)$field] = (string)$val;
}
}
// --------------------------------------------------------------------
/**
* Multiple IP query
* @param array $ipsSplit The ips array (max 25)
* @access protected
* @return void
*/
protected function _query2($ipsSplit) {
//Select the proper API
$api = $this->_cityPrecision ? self::IP_QUERY2 : self::IP_QUERY2_COUNTRY;
//Separate all IPs with a comma
$ipsCs = implode(",", $ipsSplit);
//Connect to IPInfoDB
$showTimezone = $this->_showTimezone ? 'true' : 'false';
if (!($d = @file_get_contents("http://" . $this->_apiDomain . "/$api?ip=$ipsCs&timezone=$showTimezone"))) {
$this->_setError(new Exception(self::CONNECT_ERROR));
//Try backup server
if (!($d = @file_get_contents("http://" . $this->_apiBackupDomain . "/$api?ip=$ipsCs&timezone=$showTimezone"))) {
$this->_setError(new Exception(self::CONNECT_BACKUP_ERROR));
return;
}
}
try {
$answer = @new SimpleXMLElement($d);
} catch(Exception $e) {
$this->_setError($e);
return;
}
//Add them to _geolocation
foreach($answer->Location as $key => $ipData) {
foreach($ipData as $field => $val) {
$location[(string)$field] = (string)$val;
}
$this->_geolocation[] = $location;
unset($location);
}
}
// --------------------------------------------------------------------
/**
* Set error
* @param string $msg The error message
* @access protected
* @return void
*/
protected function _setError($msg) {
$exceptionMessage = "{$msg->getMessage()} in {$msg->getFile()}({$msg->getLine()})\n";
$exceptionTrace = "Trace : {$msg->getTraceAsString()}";
$this->_errors[] = $exceptionMessage . $exceptionTrace;
}
}