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<?php |
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namespace WWON\JwtGuard; |
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use Carbon\Carbon; |
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use Illuminate\Support\Facades\Config; |
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use WWON\JwtGuard\Exceptions\InaccessibleException; |
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use WWON\JwtGuard\Exceptions\MalformedException; |
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use WWON\JwtGuard\Exceptions\TokenExpiredException; |
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class Claim |
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{ |
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/** |
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* subject |
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* |
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* @var mixed |
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*/ |
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public $sub; |
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/** |
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* issuer |
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* |
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* @var string |
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*/ |
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public $iss; |
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/** |
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* audience |
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* |
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* @var string |
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*/ |
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public $aud; |
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/** |
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* issued at |
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* |
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* @var int |
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*/ |
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public $iat; |
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/** |
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* expiration time |
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* |
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* @var int |
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*/ |
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public $exp; |
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/** |
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* not before |
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* |
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* @var int |
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*/ |
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public $nbf; |
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/** |
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* not after |
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* |
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* @var int |
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*/ |
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public $nat; |
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/** |
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* JWT identity |
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* |
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* @var string |
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*/ |
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public $jti; |
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/** |
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* leeway for using in comparing time |
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* |
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* @var int |
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*/ |
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public $leeway; |
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/** |
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* refreshable - whether the token can be refreshed |
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* |
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* @var bool |
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*/ |
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public $refresh = false; |
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/** |
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* timestamp when this object is instantiate |
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* |
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* @var int |
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*/ |
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protected $now; |
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/** |
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* Claim constructor |
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* |
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* @param array $data |
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* @throws InaccessibleException |
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* @throws MalformedException |
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* @throws TokenExpiredException |
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*/ |
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public function __construct(array $data = []) |
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{ |
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$data = $this->getDataMergedWithDefault($data); |
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foreach ($data as $key => $value) { |
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$attribute = camel_case($key); |
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if (property_exists($this, $attribute)) { |
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$this->{$attribute} = $value; |
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} |
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} |
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$this->generateJti(); |
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$this->leeway = Config::get('jwt.leeway'); |
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$this->validate(); |
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} |
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/** |
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* getDataMergedWithDefault method |
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* |
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* @param array $data |
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* @return array |
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*/ |
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protected function getDataMergedWithDefault(array $data = []) |
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{ |
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$this->now = Carbon::now()->timestamp; |
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$ttl = $this->refresh || !empty($data['refresh']) |
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? Config::get('jwt.refresh_ttl') |
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: Config::get('jwt.ttl'); |
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$data = array_merge([ |
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'iss' => Config::get('app.url'), |
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'iat' => $this->now, |
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'exp' => intval($this->now + ($ttl * 60)), |
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'nat' => intval($this->now + (Config::get('jwt.ttl') * 60)) |
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], $data); |
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return $data; |
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} |
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/** |
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* generateJti method |
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*/ |
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protected function generateJti() |
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{ |
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if (empty($this->jti)) { |
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$this->jti = md5("{$this->sub}.{$this->iat}." . rand(1000, 1999)); |
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} |
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} |
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/** |
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* validate method |
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* |
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* @throws InaccessibleException |
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* @throws MalformedException |
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* @throws TokenExpiredException |
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*/ |
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protected function validate() |
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{ |
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$compareTime = $this->now + $this->leeway; |
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if (empty($this->sub)) { |
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throw new MalformedException; |
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} |
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if (empty($this->aud)) { |
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throw new MalformedException; |
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} |
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if ($this->iat > $this->exp || $this->iat > $this->nat) { |
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throw new MalformedException; |
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} |
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if ($this->exp < $compareTime) { |
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throw new TokenExpiredException; |
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} |
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} |
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/** |
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* validateAccessible method |
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* |
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* @throws InaccessibleException |
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*/ |
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public function validateAccessible() |
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{ |
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$compareTime = $this->now + $this->leeway; |
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if ($this->nat < $compareTime) { |
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throw new InaccessibleException; |
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} |
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} |
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/** |
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* toArray method |
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* |
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* @return array |
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*/ |
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public function toArray() |
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{ |
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$data = []; |
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$fields = [ |
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'sub', 'iss', 'aud', 'iat', |
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'exp', 'nbf', 'nat', 'jti' |
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]; |
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foreach ($fields as $field) { |
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if (!empty($this->{$field})) { |
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$data[$field] = $this->{$field}; |
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} |
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} |
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if ($this->refresh) { |
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$data['refresh'] = true; |
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} |
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return $data; |
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} |
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} |
wisoot /
jwt-guard
