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<?php |
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namespace Vectorface\Auth\Plugin\Limit; |
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use InvalidArgumentException; |
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use Vectorface\Auth\Auth; |
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use Vectorface\Auth\Plugin\BaseAuthPlugin; |
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/** |
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* Limit the number of logins allowed per browser. This is to be used alongside the MemcacheLoginLimitPlugin. |
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* |
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* This is not intended to be a security measure, but more as a guard against a single person locking out an entire office that's behind one NAT. |
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*/ |
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class HybridLoginLimitPlugin extends BaseAuthPlugin implements LoginLimitPluginInterface |
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{ |
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/** |
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* The login limit plugins to "combine". |
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* |
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* @var LoginLimitPluginInterface[] |
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*/ |
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protected $limiters = []; |
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/** |
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* Create a new hybrid login limiter. |
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* |
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* @param LoginLimitPluginInterface[] $limiters The login limit plugins to combine into one. |
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*/ |
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public function __construct(array $limiters = []) |
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{ |
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foreach ($limiters as $limiter) { |
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if (!($limiter instanceof LoginLimitPluginInterface)) { |
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throw new InvalidArgumentException("LoginLimitPluginInterface expected"); |
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} |
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$this->limiters[] = $limiter; |
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} |
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} |
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/** |
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* Decrement the number of attempts. |
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* |
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* This is intended for application logic when a login attempt can be forgiven. |
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*/ |
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public function decrementAttempts() |
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{ |
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foreach ($this->limiters as $limiter) { |
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$limiter->decrementAttempts(); |
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} |
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} |
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/** |
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* Get the number of login attempts performed so far. |
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* |
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* Note: The number of attempts does not necessarily imply success or |
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* failure, though if a logged-in user has 3 login attempts, that usually |
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* means 2 failed 1 successful. If the user has not authenticated, 3 |
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* attempts means 3 failed attempts. |
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* |
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* @return int The number of login attempts for this user. |
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*/ |
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public function getLoginAttempts() |
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{ |
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$attempts = 0; |
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foreach ($this->limiters as $limiter) { |
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$attempts = max($limiter->getLoginAttempts(), $attempts); |
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} |
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return $attempts; |
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} |
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/** |
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* Get the maximum number of allowed login attempts. |
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* |
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* Note: max attempts for a given IP isn't published. |
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* |
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* @return int |
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*/ |
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public function getMaxLoginAttempts() |
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{ |
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$attempts = PHP_INT_MAX; |
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foreach ($this->limiters as $limiter) { |
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$attempts = min($limiter->getMaxLoginAttempts(), $attempts); |
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} |
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return $attempts; |
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} |
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/** |
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* Auth plugin hook to be fired on login. |
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* |
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* @param string $username |
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* @param string $password |
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* @return int |
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*/ |
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public function login($username, $password) |
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{ |
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$result = Auth::RESULT_NOOP; |
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foreach ($this->limiters as $limiter) { |
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$limiterResult = $limiter->login($username, $password); |
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if (in_array($limiterResult, [Auth::RESULT_FAILURE, Auth::RESULT_FORCE])) { |
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return $limiterResult; |
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} elseif ($limiterResult === Auth::RESULT_SUCCESS) { |
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$result = $limiterResult; |
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} |
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} |
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return $result; |
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} |
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} |
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Vectorface /
auth
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