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<?php |
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/** |
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* Check Access based on remote IP address |
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* |
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* @Example entries : |
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* 192.168.178.8 |
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* 192.168.178.0/24 |
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* 192.168.178.0-50 |
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* 192.168.178.* |
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* 192.168.* |
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* @return false || string : entry the ip address was matched against |
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*/ |
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class IpAccess extends Object |
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{ |
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/** |
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* @var array |
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*/ |
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public $allowedIps = array(); |
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/** |
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* @config |
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* @var array |
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*/ |
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private static $allowed_ips = array(); |
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/** |
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* @var string |
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*/ |
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private $ip = ''; |
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/** |
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* IpAccess constructor. |
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* |
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* @param string $ip |
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* @param array $allowedIps |
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*/ |
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public function __construct($ip = '', $allowedIps = array()) |
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{ |
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parent::__construct(); |
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$this->ip = $ip; |
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self::config()->allowed_ips = $allowedIps; |
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} |
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/** |
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* @param $ip |
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*/ |
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public function setIp($ip) |
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{ |
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$this->ip = $ip; |
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} |
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/** |
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* @return array |
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*/ |
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public function getAllowedIps() |
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{ |
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if (!empty($this->allowedIps)) { |
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Deprecation::notice('1.1', 'Use the "IpAccess.allowed_ips" config setting instead'); |
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self::config()->allowed_ips = $this->allowedIps; |
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} |
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return self::$allowed_ips ? self::$allowed_ips : (array)self::config()->allowed_ips; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isEnabled() |
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{ |
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return (bool)Config::inst()->get('IpAccess', 'enabled'); |
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} |
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/** |
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* @return bool |
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*/ |
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public function hasAccess() |
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{ |
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if (!$this->isEnabled() || !(bool)$this->getAllowedIps()) { |
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return true; |
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} |
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return $this->matchIp(); |
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} |
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/** |
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* @return bool |
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*/ |
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public function matchIp() |
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{ |
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return ($this->matchExact() || $this->matchRange() || $this->matchCIDR() || $this->matchWildCard()); |
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} |
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/** |
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* @param Controller $controller |
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* @throws SS_HTTPResponse_Exception |
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*/ |
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public function respondNoAccess(Controller $controller) |
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{ |
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$response = null; |
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if (class_exists('ErrorPage', true)) { |
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$response = ErrorPage::response_for(403); |
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} |
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$controller->httpError(403, $response ? $response : 'The requested page could not be found.'); |
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} |
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/** |
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* @return string |
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*/ |
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public function matchExact() |
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{ |
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return in_array($this->ip, $this->getAllowedIps()) ? $this->ip : ''; |
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} |
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/** |
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* Try to match against a ip range |
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* Example : 192.168.1.50-100 |
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* |
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* @return string |
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*/ |
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public function matchRange() |
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{ |
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$ranges = array_filter($this->getAllowedIps(), function ($ip) { |
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return strstr($ip, '-'); |
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}); |
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$ip = $this->ip; |
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$matches = array_filter($ranges, function ($range) use ($ip) { |
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$ipFirstPart = substr($ip, 0, strrpos($ip, '.') + 1); |
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$ipLastPart = substr(strrchr($ip, '.'), 1); |
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$rangeFirstPart = substr($range, 0, strrpos($range, '.') + 1); |
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list ($start, $end) = explode('-', substr(strrchr($range, '.'), 1)); |
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return $ipFirstPart === $rangeFirstPart && $ipLastPart >= $start && $ipLastPart <= $end; |
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}); |
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return array_shift($matches); |
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} |
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/** |
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* Try to match cidr range |
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* Example : 192.168.1.0/24 |
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* |
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* @return string |
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*/ |
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public function matchCIDR() |
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{ |
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$ranges = array_filter($this->getAllowedIps(), function ($ip) { |
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return strstr($ip, '/'); |
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}); |
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if (!empty($ranges)) foreach ($ranges as $range) { |
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list ($net, $mask) = explode('/', $range); |
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if ((ip2long($this->ip) & ~((1 << (32 - $mask)) - 1)) == ip2long($net)) { |
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return $range; |
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} |
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} |
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return ''; |
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} |
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/** |
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* Try to match against a range that ends with a wildcard * |
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* Example : 192.168.1.* |
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* Example : 192.168.* |
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* |
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* @return string |
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*/ |
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public function matchWildCard() |
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{ |
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$ranges = array_filter($this->getAllowedIps(), function ($ip) { |
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return substr($ip, -1) === '*'; |
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}); |
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if (!empty($ranges)) foreach ($ranges as $range) { |
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if (substr($this->ip, 0, strlen(substr($range, 0, -1))) === substr($range, 0, -1)) { |
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return $range; |
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} |
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} |
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return ''; |
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} |
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} |
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axyr /
silverstripe-adminlogin
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.