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<?php |
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namespace MiladRahimi\Jwt; |
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use InvalidArgumentException; |
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use MiladRahimi\Jwt\Base64\Base64Parser; |
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use MiladRahimi\Jwt\Base64\SafeBase64Parser; |
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use MiladRahimi\Jwt\Cryptography\Verifier; |
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use MiladRahimi\Jwt\Exceptions\InvalidTokenException; |
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use MiladRahimi\Jwt\Exceptions\JsonDecodingException; |
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use MiladRahimi\Jwt\Exceptions\NoKidException; |
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use MiladRahimi\Jwt\Exceptions\VerifierNotFoundException; |
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use MiladRahimi\Jwt\Json\JsonParser; |
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use MiladRahimi\Jwt\Json\StrictJsonParser; |
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class VerifierFactory |
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{ |
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private array $verifiers; |
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private JsonParser $jsonParser; |
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private Base64Parser $base64Parser; |
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/** |
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* @param Verifier[] $verifiers |
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* @param JsonParser|null $jsonParser |
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* @param Base64Parser|null $base64Parser |
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*/ |
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public function __construct(array $verifiers, JsonParser $jsonParser = null, Base64Parser $base64Parser = null) |
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{ |
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foreach ($verifiers as $verifier) { |
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if ($verifier instanceof Verifier) { |
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$this->verifiers[$verifier->kid()] = $verifier; |
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} else { |
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throw new InvalidArgumentException( |
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'Values of $verifiers array must be instance of MiladRahimi\Jwt\Cryptography\Verifier.' |
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); |
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} |
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} |
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$this->jsonParser = $jsonParser ?: new StrictJsonParser(); |
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$this->base64Parser = $base64Parser ?: new SafeBase64Parser(); |
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} |
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/** |
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* @throws InvalidTokenException |
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* @throws JsonDecodingException |
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* @throws NoKidException |
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* @throws VerifierNotFoundException |
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*/ |
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public function getVerifier(string $jwt) |
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{ |
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$header = $this->jsonParser->decode($this->base64Parser->decode($this->extractHeader($jwt))); |
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if (isset($header['kid'])) { |
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if (isset($this->verifiers[$header['kid']])) { |
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return $this->verifiers[$header['kid']]; |
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} |
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throw new VerifierNotFoundException("No verifier found for {$header['kid']}"); |
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} |
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throw new NoKidException(); |
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} |
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/** |
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* Extract header component of given JWT |
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* |
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* @throws Exceptions\InvalidTokenException |
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*/ |
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private function extractHeader(string $jwt): string |
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{ |
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$sections = explode('.', $jwt); |
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if (count($sections) !== 3) { |
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throw new Exceptions\InvalidTokenException('JWT format is not valid'); |
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} |
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return $sections[0]; |
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} |
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} |
miladrahimi /
php-jwt
