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<?php
declare(strict_types=1);
namespace GeoIp2\Database;
use GeoIp2\Exception\AddressNotFoundException;
use GeoIp2\Model\AbstractModel;
use GeoIp2\Model\AnonymousIp;
use GeoIp2\Model\Asn;
use GeoIp2\Model\City;
use GeoIp2\Model\ConnectionType;
use GeoIp2\Model\Country;
use GeoIp2\Model\Domain;
use GeoIp2\Model\Enterprise;
use GeoIp2\Model\Isp;
use GeoIp2\ProviderInterface;
use MaxMind\Db\Reader as DbReader;
use MaxMind\Db\Reader\InvalidDatabaseException;
/**
* Instances of this class provide a reader for the GeoIP2 database format.
* IP addresses can be looked up using the database specific methods.
*
* ## Usage ##
*
* The basic API for this class is the same for every database. First, you
* create a reader object, specifying a file name. You then call the method
* corresponding to the specific database, passing it the IP address you want
* to look up.
*
* If the request succeeds, the method call will return a model class for
* the method you called. This model in turn contains multiple record classes,
* each of which represents part of the data returned by the database. If
* the database does not contain the requested information, the attributes
* on the record class will have a `null` value.
*
* If the address is not in the database, an
* {@link \GeoIp2\Exception\AddressNotFoundException} exception will be
* thrown. If an invalid IP address is passed to one of the methods, a
* SPL {@link \InvalidArgumentException} will be thrown. If the database is
* corrupt or invalid, a {@link \MaxMind\Db\Reader\InvalidDatabaseException}
* will be thrown.
*/
class Reader implements ProviderInterface
{
/**
* @var DbReader
*/
private $dbReader;
/**
* @var string
*/
private $dbType;
/**
* @var array<string>
*/
private $locales;
/**
* Constructor.
*
* @param string $filename the path to the GeoIP2 database file
* @param array $locales list of locale codes to use in name property
* from most preferred to least preferred
*
* @throws \MaxMind\Db\Reader\InvalidDatabaseException if the database
* is corrupt or invalid
*/
public function __construct(
string $filename,
array $locales = ['en']
) {
$this->dbReader = new DbReader($filename);
$this->dbType = $this->dbReader->metadata()->databaseType;
$this->locales = $locales;
}
/**
* This method returns a GeoIP2 City model.
*
* @param string $ipAddress an IPv4 or IPv6 address as a string
*
* @throws \GeoIp2\Exception\AddressNotFoundException if the address is
* not in the database
* @throws \MaxMind\Db\Reader\InvalidDatabaseException if the database
* is corrupt or invalid
*/
public function city(string $ipAddress): City
{
// @phpstan-ignore-next-line
return $this->modelFor(City::class, 'City', $ipAddress);
}
/**
* This method returns a GeoIP2 Country model.
*
* @param string $ipAddress an IPv4 or IPv6 address as a string
*
* @throws \GeoIp2\Exception\AddressNotFoundException if the address is
* not in the database
* @throws \MaxMind\Db\Reader\InvalidDatabaseException if the database
* is corrupt or invalid
*/
public function country(string $ipAddress): Country
{
// @phpstan-ignore-next-line
return $this->modelFor(Country::class, 'Country', $ipAddress);
}
/**
* This method returns a GeoIP2 Anonymous IP model.
*
* @param string $ipAddress an IPv4 or IPv6 address as a string
*
* @throws \GeoIp2\Exception\AddressNotFoundException if the address is
* not in the database
* @throws \MaxMind\Db\Reader\InvalidDatabaseException if the database
* is corrupt or invalid
*/
public function anonymousIp(string $ipAddress): AnonymousIp
{
// @phpstan-ignore-next-line
return $this->flatModelFor(
AnonymousIp::class,
'GeoIP2-Anonymous-IP',
$ipAddress
);
}
/**
* This method returns a GeoLite2 ASN model.
*
* @param string $ipAddress an IPv4 or IPv6 address as a string
*
* @throws \GeoIp2\Exception\AddressNotFoundException if the address is
* not in the database
* @throws \MaxMind\Db\Reader\InvalidDatabaseException if the database
* is corrupt or invalid
*/
public function asn(string $ipAddress): Asn
{
// @phpstan-ignore-next-line
return $this->flatModelFor(
Asn::class,
'GeoLite2-ASN',
$ipAddress
);
}
/**
* This method returns a GeoIP2 Connection Type model.
*
* @param string $ipAddress an IPv4 or IPv6 address as a string
*
* @throws \GeoIp2\Exception\AddressNotFoundException if the address is
* not in the database
* @throws \MaxMind\Db\Reader\InvalidDatabaseException if the database
* is corrupt or invalid
*/
public function connectionType(string $ipAddress): ConnectionType
{
// @phpstan-ignore-next-line
return $this->flatModelFor(
ConnectionType::class,
'GeoIP2-Connection-Type',
$ipAddress
);
}
/**
* This method returns a GeoIP2 Domain model.
*
* @param string $ipAddress an IPv4 or IPv6 address as a string
*
* @throws \GeoIp2\Exception\AddressNotFoundException if the address is
* not in the database
* @throws \MaxMind\Db\Reader\InvalidDatabaseException if the database
* is corrupt or invalid
*/
public function domain(string $ipAddress): Domain
{
// @phpstan-ignore-next-line
return $this->flatModelFor(
Domain::class,
'GeoIP2-Domain',
$ipAddress
);
}
/**
* This method returns a GeoIP2 Enterprise model.
*
* @param string $ipAddress an IPv4 or IPv6 address as a string
*
* @throws \GeoIp2\Exception\AddressNotFoundException if the address is
* not in the database
* @throws \MaxMind\Db\Reader\InvalidDatabaseException if the database
* is corrupt or invalid
*/
public function enterprise(string $ipAddress): Enterprise
{
// @phpstan-ignore-next-line
return $this->modelFor(Enterprise::class, 'Enterprise', $ipAddress);
}
/**
* This method returns a GeoIP2 ISP model.
*
* @param string $ipAddress an IPv4 or IPv6 address as a string
*
* @throws \GeoIp2\Exception\AddressNotFoundException if the address is
* not in the database
* @throws \MaxMind\Db\Reader\InvalidDatabaseException if the database
* is corrupt or invalid
*/
public function isp(string $ipAddress): Isp
{
// @phpstan-ignore-next-line
return $this->flatModelFor(
Isp::class,
'GeoIP2-ISP',
$ipAddress
);
}
private function modelFor(string $class, string $type, string $ipAddress): AbstractModel
{
[$record, $prefixLen] = $this->getRecord($class, $type, $ipAddress);
$record['traits']['ip_address'] = $ipAddress;
$record['traits']['prefix_len'] = $prefixLen;
return new $class($record, $this->locales);
}
private function flatModelFor(string $class, string $type, string $ipAddress): AbstractModel
{
[$record, $prefixLen] = $this->getRecord($class, $type, $ipAddress);
$record['ip_address'] = $ipAddress;
$record['prefix_len'] = $prefixLen;
return new $class($record);
}
private function getRecord(string $class, string $type, string $ipAddress): array
{
if (strpos($this->dbType, $type) === false) {
$method = lcfirst((new \ReflectionClass($class))->getShortName());
throw new \BadMethodCallException(
"The $method method cannot be used to open a {$this->dbType} database"
);
}
[$record, $prefixLen] = $this->dbReader->getWithPrefixLen($ipAddress);
if ($record === null) {
throw new AddressNotFoundException(
"The address $ipAddress is not in the database."
);
}
if (!\is_array($record)) {
// This can happen on corrupt databases. Generally,
// MaxMind\Db\Reader will throw a
// MaxMind\Db\Reader\InvalidDatabaseException, but occasionally
// the lookup may result in a record that looks valid but is not
// an array. This mostly happens when the user is ignoring all
// exceptions and the more frequent InvalidDatabaseException
// exceptions go unnoticed.
throw new InvalidDatabaseException(
"Expected an array when looking up $ipAddress but received: "
. \gettype($record)
);
}
return [$record, $prefixLen];
}
/**
* @throws \InvalidArgumentException if arguments are passed to the method
* @throws \BadMethodCallException if the database has been closed
*
* @return \MaxMind\Db\Reader\Metadata object for the database
*/
public function metadata(): DbReader\Metadata
{
return $this->dbReader->metadata();
}
/**
* Closes the GeoIP2 database and returns the resources to the system.
*/
public function close(): void
{
$this->dbReader->close();
}
}
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