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<?php |
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/* |
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* This file is part of the KleijnWeb\JwtBundle package. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace KleijnWeb\JwtBundle\Authenticator; |
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use KleijnWeb\JwtBundle\Authenticator\SignatureValidator\SignatureValidator; |
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/** |
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* @author John Kleijn <[email protected]> |
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*/ |
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class JwtToken |
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{ |
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/** |
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* @var array |
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*/ |
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private $claims = []; |
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/** |
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* @var array |
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*/ |
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private $header = []; |
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/** |
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* @var int |
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*/ |
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private $payload; |
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/** |
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* @var string |
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*/ |
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private $signature; |
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/** |
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* @var string |
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*/ |
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private $tokenString; |
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/** |
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* @param $tokenData |
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*/ |
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public function __construct($tokenData) |
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{ |
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if (is_array($tokenData)) { |
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$this->setTokenFromParams($tokenData['header'], $tokenData['claims'], $tokenData['secret']); |
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} else { |
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$this->setTokenFromString($tokenData); |
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} |
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} |
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/** |
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* @param string $tokenString |
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*/ |
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public function setTokenFromString($tokenString) |
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{ |
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$this->tokenString = $tokenString; |
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$segments = explode('.', $tokenString); |
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if (count($segments) !== 3) { |
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throw new \InvalidArgumentException("Not a JWT token string"); |
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} |
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list($headerBase64, $claimsBase64, $signatureBase64) = $segments; |
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$this->payload = "{$headerBase64}.{$claimsBase64}"; |
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$decoder = new Decoder(); |
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$this->header = $decoder->decode($headerBase64); |
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$this->claims = $decoder->decode($claimsBase64); |
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$this->signature = $decoder->base64Decode($signatureBase64); |
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} |
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/** |
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* @param array $header |
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* @param array $claims |
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* @param $secret |
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*/ |
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public function setTokenFromParams($header, $claims, $secret) |
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{ |
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$this->header = $header; |
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$this->claims = $claims; |
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$encoder = new Encoder(); |
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$headerBase64 = $encoder->encode($header); |
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$claimsBase64 = $encoder->encode($claims); |
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$this->payload = "{$headerBase64}.{$claimsBase64}"; |
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$this->signature = hash_hmac( |
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'sha256', |
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$this->payload, |
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$secret, |
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true |
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); |
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$signatureBase64 = $encoder->base64Encode($this->signature); |
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$segments = compact('headerBase64', 'claimsBase64', 'signatureBase64'); |
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$this->tokenString = implode('.', $segments); |
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} |
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/** |
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* @return string|null |
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*/ |
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public function getKeyId() |
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{ |
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return isset($this->header['kid']) ? $this->header['kid'] : null; |
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} |
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/** |
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* @param string $secret |
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* @param SignatureValidator $validator |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public function validateSignature($secret, SignatureValidator $validator) |
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{ |
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if (!$validator->isValid($this->payload, $secret, $this->signature)) { |
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throw new \InvalidArgumentException("Invalid signature"); |
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} |
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} |
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/** |
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* @return array |
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*/ |
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public function getSubject() |
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{ |
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if (isset($this->claims['sub'])) { |
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return $this->claims['sub']; |
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} |
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return $this->claims['prn']; |
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} |
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/** |
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* @return array |
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*/ |
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public function getClaims() |
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{ |
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return $this->claims; |
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} |
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/** |
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* @return array |
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*/ |
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public function getHeader() |
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{ |
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return $this->header; |
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} |
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/** |
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* @return string |
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*/ |
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public function getTokenString() |
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{ |
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return $this->tokenString; |
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} |
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} |
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kleijnweb /
jwt-bundle
