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<?php |
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namespace Ionut\Sylar; |
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use Ionut\Sylar\Filters\FilterReportInterface; |
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use Ionut\Sylar\Normalizers\NormalizerInterface; |
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use Ionut\Sylar\Normalizers\PHPIDSConverter; |
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use Ionut\Sylar\Reactions\PsrLogger; |
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use Ionut\Sylar\Reactions\ReactionInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Log\LoggerInterface; |
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class Reactor |
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{ |
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/** |
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* @var Filters |
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*/ |
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protected $filters; |
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/** |
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* @var ReactionInterface[] |
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*/ |
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protected $reactions; |
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/** |
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* @var NormalizerInterface[] |
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*/ |
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protected $normalizers; |
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/** |
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* @param Filters $filters |
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* @param ReactionInterface[] $reactions |
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* @param NormalizerInterface[] $normalizers |
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*/ |
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public function __construct(Filters $filters, array $reactions = [], array $normalizers) |
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{ |
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$this->filters = $filters; |
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$this->reactions = $reactions; |
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$this->normalizers = $normalizers; |
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} |
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/** |
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* Build an instance of the Handler by using the most common defaults. |
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* |
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* @param LoggerInterface $logger |
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* @return static |
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*/ |
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static public function factory(LoggerInterface $logger, $threshold = 0) |
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{ |
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return new static( |
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new Filters([ |
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new \Ionut\Sylar\Filters\PHPIDS\Filter |
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]), |
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[ |
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new PsrLogger($logger, $threshold) |
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], |
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[ |
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new PHPIDSConverter() |
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] |
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); |
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} |
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/** |
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* Check a given request against the defined filters. |
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* |
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* @param ServerRequestInterface $request |
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*/ |
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public function digest(ServerRequestInterface $request) |
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{ |
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$parameters = $this->normalize($this->getVerifiableParameters($request)); |
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array_walk_recursive($parameters, function (NormalizedValue $value) use($request) { |
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if ($filterReports = $this->filters->matches($value)) { |
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$this->broadcast(new Report(iterator_to_array($filterReports), $request)); |
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} |
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}); |
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} |
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/** |
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* @param array $parameters |
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* @return array |
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*/ |
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public function normalize(array $parameters) |
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{ |
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foreach ($this->normalizers as $normalizer) { |
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$parameters = $normalizer->normalize($parameters); |
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} |
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return $parameters; |
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} |
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/** |
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* @param Report $report |
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*/ |
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public function broadcast(Report $report) |
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{ |
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foreach ($this->reactions as $reaction) { |
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if ($reaction->shouldReact($report)) { |
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$reaction->reactTo($report); |
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} |
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} |
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} |
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/** |
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* Get the values that should be checked for security intrusions. |
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* |
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* @param ServerRequestInterface $request |
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* @return array |
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*/ |
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protected function getVerifiableParameters(ServerRequestInterface $request) |
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{ |
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return [$request->getServerParams(), $request->getBody()->__toString()]; |
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} |
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} |
IonutBajescu /
sylar
