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Add method to get real IP from CloudFlare headers

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This commit is contained in:
Kijin Sung 2016-02-02 09:30:00 +09:00
parent c23ebdb4aa
commit 343ad39b79
3 changed files with 47 additions and 23 deletions
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5
common/constants.php
View file

@ -51,6 +51,11 @@ else
/**
* RX_CLIENT_IP_VERSION and RX_CLIENT_IP contain information about the current visitor's IP address.
*/
if (isset($_SERVER['HTTP_CF_CONNECTING_IP']))
{
include_once __DIR__ . '/framework/ipfilter.php';
Rhymix\Framework\IpFilter::getCloudFlareRealIP();
}
if (isset($_SERVER['REMOTE_ADDR']) && preg_match('/[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$/', $_SERVER['REMOTE_ADDR'], $matches))
{
define('RX_CLIENT_IP_VERSION', 4);

42
common/defaults/cloudflare.php
View file

@ -6,27 +6,23 @@
* See: https://www.cloudflare.com/ips
*/
return array(
'ipv4' => array(
'103.21.244.0/22',
'103.22.200.0/22',
'103.31.4.0/22',
'104.16.0.0/12',
'108.162.192.0/18',
'141.101.64.0/18',
'162.158.0.0/15',
'172.64.0.0/13',
'173.245.48.0/20',
'188.114.96.0/20',
'190.93.240.0/20',
'197.234.240.0/22',
'198.41.128.0/17',
'199.27.128.0/21',
),
'ipv6' => array(
'2400:cb00::/32',
'2405:8100::/32',
'2405:b500::/32',
'2606:4700::/32',
'2803:f800::/32',
),
'103.21.244.0/22',
'103.22.200.0/22',
'103.31.4.0/22',
'104.16.0.0/12',
'108.162.192.0/18',
'141.101.64.0/18',
'162.158.0.0/15',
'172.64.0.0/13',
'173.245.48.0/20',
'188.114.96.0/20',
'190.93.240.0/20',
'197.234.240.0/22',
'198.41.128.0/17',
'199.27.128.0/21',
'2400:cb00::/32',
'2405:8100::/32',
'2405:b500::/32',
'2606:4700::/32',
'2803:f800::/32',
);

23
common/framework/ipfilter.php
View file

@ -91,6 +91,29 @@ class IpFilter
return false;
}
/**
* Get real IP from CloudFlare headers.
*
* @return string|false
*/
public static function getCloudFlareRealIP()
{
if (!isset($_SERVER['HTTP_CF_CONNECTING_IP']))
{
return false;
}
$cloudflare_ranges = (include RX_BASEDIR . 'common/defaults/cloudflare.php');
foreach ($cloudflare_ranges as $cloudflare_range)
{
if (self::inRange($_SERVER['REMOTE_ADDR'], $cloudflare_range))
{
return $_SERVER['REMOTE_ADDR'] = $_SERVER['HTTP_CF_CONNECTING_IP'];
}
}
return false;
}
/**
* Check whether the given IPv4 address belongs to a IPv4 CIDR range with mask.
*