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| author | Alex Bilbie <alex.bilbie@gmail.com> | 2012-07-28 16:08:59 +0200 |
|---|---|---|
| committer | Alex Bilbie <alex.bilbie@gmail.com> | 2012-07-28 16:08:59 +0200 |
| commit | d83e727d6deedded5b637e685accb4fac0dc3985 (patch) | |
| tree | 43612e9cdc6cf63411187ffdb83782bc469d65ce /system | |
| parent | 27228c97d6f2bc44cf8913c2b0d2e2ee439eb696 (diff) | |
| parent | f9ee005f77ea215d5318a9c5991c37453ef18ca0 (diff) | |
Merge pull request #1640 from thecrypticace/develop
Added support for IP Address Range Masks to the Proxy IPs config option
Diffstat (limited to 'system')
| -rw-r--r-- | system/core/Input.php | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/system/core/Input.php b/system/core/Input.php index 162e40c85..968a42a9a 100644 --- a/system/core/Input.php +++ b/system/core/Input.php @@ -330,10 +330,33 @@ class CI_Input { if (config_item('proxy_ips') != '' && $this->server('HTTP_X_FORWARDED_FOR') && $this->server('REMOTE_ADDR')) { + $has_ranges = strpos($proxies, '/') !== false; $proxies = preg_split('/[\s,]/', config_item('proxy_ips'), -1, PREG_SPLIT_NO_EMPTY); $proxies = is_array($proxies) ? $proxies : array($proxies); + + if ($has_ranges) + { + $long_ip = ip2long($_SERVER['REMOTE_ADDR']); + $bit_32 = 1 << 32; + + // Go through each of the IP Addresses to check for and + // test against range notation + foreach($proxies as $ip) + { + list($address, $mask_length) = explode('/', $ip); + + // Generate the bitmask for a 32 bit IP Address + $bitmask = $bit_32 - (1 << (32 - (int)$mask_length)); + if (($long_ip & $bitmask) == $address) + { + $this->ip_address = $_SERVER['HTTP_X_FORWARDED_FOR']; + break; + } + } - $this->ip_address = in_array($_SERVER['REMOTE_ADDR'], $proxies) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : $_SERVER['REMOTE_ADDR']; + } else { + $this->ip_address = in_array($_SERVER['REMOTE_ADDR'], $proxies) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : $_SERVER['REMOTE_ADDR']; + } } elseif ( ! $this->server('HTTP_CLIENT_IP') && $this->server('REMOTE_ADDR')) { |