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Add: check IP in range #5

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Add: check IP in range #5

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28 changes: 25 additions & 3 deletions modules/donate_wall/controllers/pingback.php
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,10 @@ class Pingback extends MX_Controller
'174.37.14.28'
);

private $rangesWhitelist = array(
'216.127.71.0/24'
);

private $secret;
private $key;
private $params;
Expand Down Expand Up @@ -49,14 +53,14 @@ public function index()
$this->signature = $this->calculatePingbackSignature();

// Make sure it's really PaymentWall that is sending the data
if(in_array($_SERVER['REMOTE_ADDR'], $this->ipsWhitelist)
if((in_array($_SERVER['REMOTE_ADDR'], $this->ipsWhitelist) || $this->isIpInWhitelistRange($_SERVER['REMOTE_ADDR'], $this->rangesWhitelist))
&& $this->input->get('sig') == $this->signature)
{
$this->process();
}
else
{
if(in_array($_SERVER['REMOTE_ADDR'], $this->ipsWhitelist))
if((in_array($_SERVER['REMOTE_ADDR'], $this->ipsWhitelist) || $this->isIpInWhitelistRange($_SERVER['REMOTE_ADDR'], $this->rangesWhitelist)))
{
die("WRONG SIGNATURE");
}
Expand Down Expand Up @@ -119,4 +123,22 @@ private function updateMonthlyIncome()
$this->db->query("INSERT INTO monthly_income(month, amount) VALUES(?, ?)", array(date("Y-m"), floor($this->currency)));
}
}
}

private function isIpInWhitelistRange($ipAddress, $rangesWhitelist) {
foreach ($rangesWhitelist as $range) {
if ($this->isCidrMatched($ipAddress, $range)) {
return true;
}
}
return false;
}

private function isCidrMatched($ip, $range) {
list($subnet, $bits) = explode('/', $range);
$ip = ip2long($ip);
$subnet = ip2long($subnet);
$mask = -1 << (32 - $bits);
$subnet &= $mask;
return ($ip & $mask) == $subnet;
}
}