class wfJWT {
private $claims;
const JWT_TTL = 600;
const ISSUER = 600;
public static function extractTokenContents($token) {
if (!is_string($token)) {
throw new InvalidArgumentException('Token is not a string. ' . gettype($token) . ' given.');
}
// Verify the token matches the JWT format.
if (!preg_match('/^[a-zA-Z0-9\-_]+?\.[a-zA-Z0-9\-_]+?\.[a-zA-Z0-9\-_]+?$/', $token)) {
throw new wfJWTException('Invalid token format.');
}
list($header, $body, $signature) = explode('.', $token);
// Test that the token is valid and not expired.
$decodedHeader = base64_decode($header);
if (!(is_string($decodedHeader) && $decodedHeader)) {
throw new wfJWTException('Token header is invalid.');
}
$header = json_decode($decodedHeader, true);
if (!is_array($header)) {
throw new wfJWTException('Token header is invalid.');
}
$decodedBody = base64_decode($body);
if (!(is_string($decodedBody) && $decodedBody)) {
throw new wfJWTException('Token body is invalid.');
}
$body = json_decode($decodedBody, true);
if (!is_array($body)) {
throw new wfJWTException('Token body is invalid.');
}
return array(
'header' => $header,
'body' => $body,
'signature' => $signature,
);
}
/**
* @param mixed $subject
*/
public function __construct($subject = null) {
$this->claims = $this->getClaimDefaults();
$this->claims['sub'] = $subject;
}
/**
* @return string
*/
public function encode() {
$header = $this->encodeString($this->buildHeader());
$body = $this->encodeString($this->buildBody());
return sprintf('%s.%s.%s', $header, $body,
$this->encodeString($this->sign(sprintf('%s.%s', $header, $body))));
}
/**
* @param string $token
* @return array
* @throws wfJWTException|InvalidArgumentException
*/
public function decode($token) {
if (!is_string($token)) {
throw new InvalidArgumentException('Token is not a string. ' . gettype($token) . ' given.');
}
// Verify the token matches the JWT format.
if (!preg_match('/^[a-zA-Z0-9\-_]+?\.[a-zA-Z0-9\-_]+?\.[a-zA-Z0-9\-_]+?$/', $token)) {
throw new wfJWTException('Invalid token format.');
}
list($header, $body, $signature) = explode('.', $token);
// Verify signature matches the supplied payload.
if (!$this->verifySignature($this->decodeString($signature), sprintf('%s.%s', $header, $body))) {
throw new wfJWTException('Invalid signature.');
}
// Test that the token is valid and not expired.
$decodedHeader = base64_decode($header);
if (!(is_string($decodedHeader) && $decodedHeader)) {
throw new wfJWTException('Token header is invalid.');
}
$header = json_decode($decodedHeader, true);
if (!(
is_array($header) &&
array_key_exists('alg', $header) &&
$header['alg'] === 'HS256' &&
$header['typ'] === 'JWT'
)) {
throw new wfJWTException('Token header is invalid.');
}
$decodedBody = base64_decode($body);
if (!(is_string($decodedBody) && $decodedBody)) {
throw new wfJWTException('Token body is invalid.');
}
$body = json_decode($decodedBody, true);
if (!(
is_array($body) &&
// Check the token not before now timestamp.
array_key_exists('nbf', $body) &&
is_numeric($body['nbf']) &&
$body['nbf'] <= time() &&
// Check the token is not expired.
array_key_exists('exp', $body) &&
is_numeric($body['exp']) &&
$body['exp'] >= time() &&
// Check the issuer and audience is ours.
$body['iss'] === 'Wordfence ' . WORDFENCE_VERSION &&
$body['aud'] === 'Wordfence Central'
)) {
throw new wfJWTException('Token is invalid or expired.');
}
return array(
'header' => $header,
'body' => $body,
);
}
/**
* @param string $string
* @return string
*/
public function sign($string) {
$salt = wp_salt('auth');
return hash_hmac('sha256', $string, $salt, true);
}
/**
* @param string $signature
* @param string $message
* @return bool
*/
public function verifySignature($signature, $message) {
return hash_equals($this->sign($message), $signature);
}
/**
* @return string
*/
public function __toString() {
return $this->encode();
}
/**
* @param string $data
* @return string
*/
public function encodeString($data) {
return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
}
/**
* @param string $data
* @return bool|string
*/
public function decodeString($data) {
return base64_decode(strtr($data, '-_', '+/'));
}
/**
* @return mixed|string
*/
protected function buildHeader() {
return '{"alg":"HS256","typ":"JWT"}';
}
/**
* @return mixed|string
*/
protected function buildBody() {
return json_encode($this->getClaims());
}
/**
* @return array
*/
protected function getClaimDefaults() {
$now = time();
return array(
'iss' => 'Wordfence ' . WORDFENCE_VERSION,
'aud' => 'Wordfence Central',
'nbf' => $now,
'iat' => $now,
'exp' => $now + self::JWT_TTL,
);
}
/**
* @param array $claims
*/
public function addClaims($claims) {
if (!is_array($claims)) {
throw new InvalidArgumentException(__METHOD__ . ' expects argument 1 to be array.');
}
$this->setClaims(array_merge($this->getClaims(), $claims));
}
/**
* @return array
*/
public function getClaims() {
return $this->claims;
}
/**
* @param array $claims
*/
public function setClaims($claims) {
$this->claims = $claims;
}
}
class wfJWTException extends Exception {
}
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Para mejorar los resultados a largo plazo en los juegos de azar online, es fundamental practicar la disciplina y el análisis. La disciplina se refiere a la capacidad de seguir un plan preestablecido y resistir la tentación de desviarse de él. Los jugadores deben ser disciplinados en cuanto a seguir sus límites de tiempo y dinero, así como en cuanto a no dejarse llevar por las emociones negativas que puedan surgir durante el juego.
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Listado de recomendaciones para una gestión del riesgo efectiva:
Con estas recomendaciones y la implementación de una gestión del riesgo efectiva, los jugadores pueden disfrutar de los juegos de azar online de manera responsable y mejorar sus resultados a largo plazo.
]]>Fortune Dragon is a popular online slot game that has captivated players with its exciting gameplay mechanics and special symbols. In this article, we will delve into the intricacies of the game, exploring how these elements influence potential outcomes and what key factors players should consider before starting a session.
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Special Symbols Influence
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In conclusion, Fortune Dragon is an exciting slot game with engaging gameplay mechanics and special symbols that can significantly influence potential outcomes. By understanding how these elements work and considering key factors before starting a session, players can increase their chances of winning and have a more enjoyable gaming experience.
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