diff options
| author | Derek Jones <derek.jones@ellislab.com> | 2009-02-04 22:40:20 +0100 |
|---|---|---|
| committer | Derek Jones <derek.jones@ellislab.com> | 2009-02-04 22:40:20 +0100 |
| commit | c59722885288a8af90392b8019b415dd84229775 (patch) | |
| tree | ac50b503725063df0b386fca0bc6989f0a87283c /system/libraries/Input.php | |
| parent | 149ca0820ef2fe3df34e023a109b4e72dbb4899d (diff) | |
added proxy_ips config item to whitelist reverse proxy servers to use the HTTP_X_FORWARDED_FOR header safely to determine the visitor's IP address
Diffstat (limited to 'system/libraries/Input.php')
| -rw-r--r-- | system/libraries/Input.php | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/system/libraries/Input.php b/system/libraries/Input.php index e879e2d13..6491d1791 100644 --- a/system/libraries/Input.php +++ b/system/libraries/Input.php @@ -346,8 +346,15 @@ class CI_Input { { return $this->ip_address; } + + if ($this->config->item('proxy_ips') != '' && $this->server('HTTP_X_FORWARDED_FOR') && $this->server('REMOTE_ADDR')) + { + $proxies = preg_split('/[\s,]/', $this->config->item('proxy_ips'), -1, PREG_SPLIT_NO_EMPTY); + $proxies = is_array($proxies) ? $proxies : array($proxies); - if ($this->server('REMOTE_ADDR') AND $this->server('HTTP_CLIENT_IP')) + $this->ip_address = in_array($_SERVER['REMOTE_ADDR'], $proxies) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : $_SERVER['REMOTE_ADDR']; + } + elseif ($this->server('REMOTE_ADDR') AND $this->server('HTTP_CLIENT_IP')) { $this->ip_address = $_SERVER['HTTP_CLIENT_IP']; } @@ -373,7 +380,7 @@ class CI_Input { if (strstr($this->ip_address, ',')) { $x = explode(',', $this->ip_address); - $this->ip_address = end($x); + $this->ip_address = trim(end($x)); } if ( ! $this->valid_ip($this->ip_address)) |