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<?php |
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declare(strict_types = 1); |
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namespace Sop\JWX\JWT; |
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use Sop\JWX\JWT\Claim\Claim; |
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use Sop\JWX\JWT\Claim\TypedClaims; |
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/** |
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* Represents a set of Claim objects. |
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* |
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* @see https://tools.ietf.org/html/rfc7519#section-4 |
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*/ |
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class Claims implements \Countable, \IteratorAggregate |
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{ |
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use TypedClaims; |
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/** |
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* Claims. |
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* |
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* @var Claim[] |
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*/ |
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protected $_claims; |
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/** |
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* Constructor. |
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* |
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* @param Claim ...$claims Zero or more claims |
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*/ |
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public function __construct(Claim ...$claims) |
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{ |
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$this->_claims = []; |
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foreach ($claims as $claim) { |
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$this->_claims[$claim->name()] = $claim; |
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} |
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} |
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/** |
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* Convert to string. |
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*/ |
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public function __toString(): string |
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{ |
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return $this->toJSON(); |
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} |
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/** |
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* Initialize from a JSON string. |
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* |
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* @param string $json JSON |
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* |
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* @throws \UnexpectedValueException If JSON is malformed |
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*/ |
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public static function fromJSON(string $json): self |
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{ |
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$claims = []; |
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$fields = json_decode($json, true, 32, JSON_BIGINT_AS_STRING); |
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if (!is_array($fields)) { |
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throw new \UnexpectedValueException('Invalid JSON.'); |
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} |
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foreach ($fields as $name => $value) { |
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$claims[] = Claim::fromNameAndValue($name, $value); |
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} |
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return new self(...$claims); |
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} |
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/** |
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* Get self with Claim objects added. |
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* |
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* @param Claim ...$claims One or more Claim objects |
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*/ |
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public function withClaims(Claim ...$claims): self |
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{ |
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$obj = clone $this; |
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foreach ($claims as $claim) { |
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$obj->_claims[$claim->name()] = $claim; |
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} |
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return $obj; |
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} |
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/** |
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* Get all claims. |
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* |
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* @return Claim[] |
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*/ |
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public function all(): array |
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{ |
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return array_values($this->_claims); |
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} |
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/** |
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* Check whether claim is present. |
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* |
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* @param string $name Claim name |
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*/ |
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public function has(string $name): bool |
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{ |
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return isset($this->_claims[$name]); |
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} |
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/** |
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* Get claim by name. |
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* |
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* @param string $name Claim name |
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* |
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* @throws \LogicException If claim is not present |
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*/ |
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public function get(string $name): Claim |
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{ |
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if (!isset($this->_claims[$name])) { |
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throw new \LogicException("Claim {$name} not set."); |
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} |
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return $this->_claims[$name]; |
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} |
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/** |
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* Convert to a JSON. |
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*/ |
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public function toJSON(): string |
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{ |
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$data = []; |
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foreach ($this->_claims as $claim) { |
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$data[$claim->name()] = $claim->value(); |
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} |
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return json_encode((object) $data, JSON_UNESCAPED_SLASHES); |
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} |
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/** |
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* Check whether a claims set is valid in the given context. |
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* |
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* @param ValidationContext $ctx Validation context |
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*/ |
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public function isValid(ValidationContext $ctx): bool |
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{ |
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try { |
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$ctx->validate($this); |
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} catch (\RuntimeException $e) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Get the number of claims. |
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* |
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* @see \Countable::count() |
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*/ |
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public function count(): int |
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{ |
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return count($this->_claims); |
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} |
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/** |
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* Get iterator for Claim objects keyed by claim name. |
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* |
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* @see \IteratorAggregate::getIterator() |
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*/ |
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public function getIterator(): \ArrayIterator |
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{ |
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return new \ArrayIterator($this->_claims); |
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} |
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} |
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