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<?php
include_once 'JWT.php';
class Services_Twilio_AccessToken
{
private $signingKeySid;
private $accountSid;
private $secret;
private $ttl;
private $identity;
private $nbf;
private $grants;
public function __construct($accountSid, $signingKeySid, $secret, $ttl = 3600, $identity = null)
{
$this->signingKeySid = $signingKeySid;
$this->accountSid = $accountSid;
$this->secret = $secret;
$this->ttl = $ttl;
if (!is_null($identity)) {
$this->identity = $identity;
}
$this->grants = array();
}
/**
* Set the identity of this access token
*
* @param string $identity identity of the grant
*
* @return Services_Twilio_AccessToken updated access token
*/
public function setIdentity($identity)
{
$this->identity = $identity;
return $this;
}
/**
* Returns the identity of the grant
*
* @return string the identity
*/
public function getIdentity()
{
return $this->identity;
}
/**
* Set the nbf of this access token
*
* @param integer $nbf nbf in epoch seconds of the grant
*
* @return Services_Twilio_AccessToken updated access token
*/
public function setNbf($nbf)
{
$this->nbf = $nbf;
return $this;
}
/**
* Returns the nbf of the grant
*
* @return integer the nbf in epoch seconds
*/
public function getNbf()
{
return $this->nbf;
}
/**
* Add a grant to the access token
*
* @param Services_Twilio_Auth_Grant $grant to be added
*
* @return $this the updated access token
*/
public function addGrant(Services_Twilio_Auth_Grant $grant)
{
$this->grants[] = $grant;
return $this;
}
public function toJWT($algorithm = 'HS256')
{
$header = array(
'cty' => 'twilio-fpa;v=1',
'typ' => 'JWT'
);
$now = time();
$grants = array();
if ($this->identity) {
$grants['identity'] = $this->identity;
}
foreach ($this->grants as $grant) {
$payload = $grant->getPayload();
if (empty($payload)) {
$payload = json_decode('{}');
}
$grants[$grant->getGrantKey()] = $payload;
}
if (empty($grants)) {
$grants = json_decode('{}');
}
$payload = array(
'jti' => $this->signingKeySid . '-' . $now,
'iss' => $this->signingKeySid,
'sub' => $this->accountSid,
'exp' => $now + $this->ttl,
'grants' => $grants
);
if (!is_null($this->nbf)) {
$payload['nbf'] = $this->nbf;
}
return JWT::encode($payload, $this->secret, $algorithm, $header);
}
public function __toString()
{
return $this->toJWT();
}
}
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