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<?php |
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declare(strict_types = 1); |
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namespace Zortje\MVC\Storage\Cookie; |
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use Lcobucci\JWT\Builder; |
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use Lcobucci\JWT\Claim; |
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use Lcobucci\JWT\Parser; |
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use Lcobucci\JWT\Signer\Hmac\Sha256; |
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use Lcobucci\JWT\ValidationData; |
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use Zortje\MVC\Configuration\Configuration; |
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use Zortje\MVC\Storage\Cookie\Exception\CookieUndefinedIndexException; |
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/** |
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* Class Cookie |
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* |
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* @package Zortje\MVC\Storage |
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*/ |
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class Cookie |
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{ |
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const ISSUER = 'zortje/mvc'; |
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/** |
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* @var Configuration |
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*/ |
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protected $configuration; |
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/** |
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* @var string[] Internal cookie values |
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*/ |
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protected $values = []; |
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/** |
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* Cookie constructor. |
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* |
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* @param Configuration $configuration Configuration |
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* @param string $token JWT string |
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*/ |
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public function __construct(Configuration $configuration, string $token = '') |
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{ |
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$this->configuration = $configuration; |
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$this->values = $this->parseAndValidateToken($token); |
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} |
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/** |
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* Set value in cookie |
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* |
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* @param string $key Cookie key |
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* @param string $value Cookie value |
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*/ |
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public function set(string $key, string $value) |
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{ |
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$this->values[$key] = $value; |
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} |
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/** |
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* Check if value for key exists in cookie |
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* |
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* @param string $key Cookie key |
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* |
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* @return bool TRUE if key exists, otherwise FALSE |
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*/ |
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public function exists(string $key) |
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{ |
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return isset($this->values[$key]); |
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} |
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/** |
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* Remove value for key in cookie |
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* |
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* @param string $key Cookie key |
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*/ |
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public function remove(string $key) |
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{ |
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unset($this->values[$key]); |
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} |
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/** |
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* Get value from cookie |
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* |
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* @param string $key Cookie key |
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* |
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* @return string Cookie value |
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* |
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* @throws CookieUndefinedIndexException |
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*/ |
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public function get(string $key): string |
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{ |
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if (isset($this->values[$key]) === false) { |
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throw new CookieUndefinedIndexException([$key]); |
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} |
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return $this->values[$key]; |
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} |
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/** |
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* @return string JWT string |
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*/ |
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public function getTokenString(): string |
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{ |
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/** |
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* Build Token |
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*/ |
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$builder = (new Builder()); |
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$builder->setIssuer(self::ISSUER); |
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$builder->setExpiration((new \DateTime($this->configuration->get('Cookie.TTL')))->getTimestamp()); |
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foreach ($this->values as $key => $value) { |
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$builder->set($key, $value); |
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} |
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/** |
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* Sign and generate new token |
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*/ |
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$builder->sign(new Sha256(), $this->configuration->get('Cookie.Signer.Key')); |
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$token = $builder->getToken(); |
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return (string)$token; |
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} |
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/** |
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* Validates token for cookie and returns values if valid |
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* |
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* @param string $token |
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* |
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* @return array |
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*/ |
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protected function parseAndValidateToken(string $token) |
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{ |
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try { |
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$token = (new Parser())->parse($token); |
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// @todo How to test: It will use the current time to validate (iat, nbf and exp) |
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$data = new ValidationData(); |
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$data->setIssuer(self::ISSUER); |
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$values = []; |
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if ($token->validate($data) && $token->verify(new Sha256(), |
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$this->configuration->get('Cookie.Signer.Key')) |
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) { |
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/** |
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* @var Claim $claim |
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*/ |
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$ignored = array_fill_keys(['iss', 'exp'], true); |
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foreach ($token->getClaims() as $claim) { |
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if (isset($ignored[$claim->getName()])) { |
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continue; |
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} |
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$values[$claim->getName()] = $claim->getValue(); |
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} |
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} |
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return $values; |
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} catch (\InvalidArgumentException $e) { |
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return []; |
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} |
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} |
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} |
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