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Moisés Aguilar
Asked: 2020-04-18 17:26:08 +0800 CST 2020-04-18 17:26:08 +0800 CST

How can I display my website in only one city?

  • 772

How can I display my website in only one city?

The client only wants to be seen in one city all over the world, how can I do that, I would really appreciate your help :)

I did what you told me:

https://i.gyazo.com/5c933886ffd28e8287d803c094574009.png

and it sends me this error:

array ( 'geoplugin_request' => '::1', 'geoplugin_status' => 404, 'geoplugin_credit' => 'Some of the returned data includes GeoLite data created by MaxMind, available from http://www.maxmind.com.', 'geoplugin_city' => NULL, 'geoplugin_region' => NULL, 'geoplugin_areaCode' => NULL, 'geoplugin_dmaCode' => NULL, 'geoplugin_countryCode' => NULL, 'geoplugin_countryName' => NULL, 'geoplugin_continentCode' => NULL, 'geoplugin_latitude' => NULL, 'geoplugin_longitude' => NULL, 'geoplugin_regionCode' => NULL, 'geoplugin_regionName' => '', 'geoplugin_currencyCode' => NULL, 'geoplugin_currencySymbol' => NULL, 'geoplugin_currencySymbol_UTF8' => '', 'geoplugin_currencyConverter' => '0', )
php

2 Answers

  1. Best Answer

    Updated based on Alfredo Paz's comment

    In the case of PHP you could resort to the following:

    1) Obtain the IP address of the visitor.

    <?php
function get_real_ip() {
    if (!empty($_SERVER['HTTP_CLIENT_IP']))
        return $_SERVER['HTTP_CLIENT_IP'];

    if (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
        return $_SERVER['HTTP_X_FORWARDED_FOR'];

    return $_SERVER['REMOTE_ADDR'];
}
echo $mi_ip = get_real_ip();
?>

    2) Call a geolocation service, in this case http://www.geoplugin.net :

    $datos_cliente = var_export(unserialize(file_get_contents('http://www.geoplugin.net/php.gp?ip='.$mi_ip)));

    3) Use the values ​​of the obtained object:

    array (
  'geoplugin_request' => '100.100.100.100',
  'geoplugin_status' => 200,
  'geoplugin_credit' => 'Some of the returned data includes GeoLite data created by MaxMind, available from http://www.maxmind.com.',
  'geoplugin_city' => 'Ciudad',
  'geoplugin_region' => 'Region\',
  'geoplugin_areaCode' => '0',
  'geoplugin_dmaCode' => '0',
  'geoplugin_countryCode' => 'PA',
  'geoplugin_countryName' => 'Pais',
  'geoplugin_continentCode' => 'Co',
  'geoplugin_latitude' => '0.000',
  'geoplugin_longitude' => '-0.000',
  'geoplugin_regionCode' => '00',
  'geoplugin_regionName' => 'Region,
  'geoplugin_currencyCode' => 'COD',
  'geoplugin_currencySymbol' => NULL,
  'geoplugin_currencySymbol_UTF8' => '',
  'geoplugin_currencyConverter' => '0',
)

    4) Assign the city and verify that it is the allowed city

    $ciudad_permitida= "Santa Lucia";
$ciudad_cliente = $datos_cliente["geoplugin_city"];
if($ciudad_cliente == $ciudad_permitida){
    header("location index.php");
} else {
    header("location error_ciudad_prohibida.php");
}

    5) Your error page

    <html>
<h1>Este sitio web esta bloqueado para tu localidad</h1>
</html>

    6) Complete would be something like:

    <?php
function get_real_ip() {
    if (!empty($_SERVER['HTTP_CLIENT_IP']))
        return $_SERVER['HTTP_CLIENT_IP'];

    if (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
        return $_SERVER['HTTP_X_FORWARDED_FOR'];

    return $_SERVER['REMOTE_ADDR'];
}

$mi_ip = get_real_ip();


$datos_cliente = var_export(unserialize(file_get_contents('http://www.geoplugin.net/php.gp?ip='.$mi_ip)));

$ciudad_permitida = "Santa Lucia";

$ciudad_cliente = $datos_cliente["geoplugin_city"];

if($ciudad_cliente == $ciudad_permitida){
    header("location index.php");
} else {
    header("location error_ciudad_prohibida.php");
}
?>

    It should be noted that you could obtain the IP from where the user obtains the internet, locating it in a different city.

    Note: Change the code so that you take the allowed city instead of going through all the cities that can NOT be valid.

    I note that if your city is called "barcelona" example, you could find people who would access from Spain and from Venezuela, you would also have to add the condition of your country.

    Updated to verify the country and city of origin:

    I add the code also verifying the country of origin avoiding conflicts of the same city, for example: Venezuela and Spain have a city called Barcelona

    $pais_permitido = "Venezuela";
$ciudad_permitida= "Barcelona";

$pais_cliente = $datos_cliente["geoplugin_countryName"];
$ciudad_cliente = $datos_cliente["geoplugin_city"];

if($pais_cliente == $pais_permitido and
   $ciudad_cliente == $ciudad_permitida){
    header("location index.php");
} else {
    header("location error_ciudad_prohibida.php");
}

    In this case, we first verify that the client is in Venezuela and second that it is in the city of Barcelona.

    Updated based on Adriá Vilanova's comment

    I quote your comment:

    As a suggestion, it would be good to mention that IP geolocation services are not very precise and also sometimes fail very significantly. For example, if you live in a city near Madrid (let's take Alcalá de Henares as an example), the IP geolocation service may say that it is in Madrid. That is why I think it is not a perfect security control method, and I think it should be indicated in the answer for those people who are unaware of this

    • 23

  2. 1 I add to the accepted answer the way to obtain the ip that has worked for me taking into account proxies, loadbalancers and others:

    function get_ip_address()
{
    $ipaddress = '';
    if (getenv('HTTP_CLIENT_IP'))
        $ipaddress = getenv('HTTP_CLIENT_IP');

    else if(getenv('HTTP_X_FORWARDED_FOR'))
        $ipaddress = getenv('HTTP_X_FORWARDED_FOR');

    else if(getenv('HTTP_X_FORWARDED'))
        $ipaddress = getenv('HTTP_X_FORWARDED');

    else if(getenv('HTTP_FORWARDED_FOR'))
        $ipaddress = getenv('HTTP_FORWARDED_FOR');

    else if(getenv('HTTP_FORWARDED'))
       $ipaddress = getenv('HTTP_FORWARDED');

    else if(getenv('REMOTE_ADDR'))
        $ipaddress = getenv('REMOTE_ADDR');
    else
        $ipaddress = 'UNKNOWN';
    if (strpos($ipaddress, ",") !== false) :
      $ipaddress = strtok($ipaddress, ",");
    endif;
    return $ipaddress;
}

    Note that in the last lines I discard the extra ip added when the request passes through several proxies (it may not be the real ip if it is discarded in the proxy for security reasons, but it is a good approximation).

    2 Doing tests in local environments and behind routers, balancers or nat the reported ip will be the local one with which a geoip location will give an error, to correct this we use the following trick:

    $externalContent = file_get_contents('http://checkip.dyndns.com/');
preg_match('/Current IP Address: \[?([:.0-9a-fA-F]+)\]?/', $externalContent, $m);
$externalIp = $m[1];

    3 Keep in mind that services like geoplugin are free up to 150/200 requests/queries per minute, this may be acceptable for a website with low to normal traffic, but if a marketing campaign is carried out with a deadline, it is most likely that in the first hours the server receives many simultaneous queries and fails. To avoid the latter you will have to:

    a) download your own copy of geolite database

     $ wget -c -N http://geolite.maxmind.com/download/geoip/database/GeoLite2-City.tar.gz
 $ tar -zxvf GeoLite2-City.tar.gz

    b) install a library to use it. (PHP using composer https://getcomposer.org/ )

     $ composer require geoip2/geoip2

    c) use the library:

    require_once __DIR__ .'/vendor/autoload.php';
use GeoIp2\Database\Reader;

$GEOIP_DBCITY = __DIR__ .'/app/cache/GeoLite2-City.mmdb';

$theIP = '8.8.8.8';
try {
    $reader = new Reader($GEOIP_DBCITY);
    $record = $reader->city($theIP);
    echo 'Country : '.$record->country->name.PHP_EOL;
    echo 'State   : '.$record->mostSpecificSubdivision->name.PHP_EOL;
    echo 'City    : '.$record->city->name.PHP_EOL;
}
catch(Exception $ex) {
    echo 'Something went wrong : '.$ex->getMessage().PHP_EOL;
}

    Note: the use of this library may require installing extra php extensions (bcmath or gmp for example)

    • 7