This method takes the required VAPID parameters and returns the required
header to be added to a Web Push Protocol Request.
| public static getVapidHeaders ( string $audience, string $subject, string $publicKey, string $privateKey, integer $expiration = null ) : array | ||
| $audience | string | This must be the origin of the push service |
| $subject | string | This should be a URL or a 'mailto:' email address |
| $publicKey | string | The decoded VAPID public key |
| $privateKey | string | The decoded VAPID private key |
| $expiration | integer | The expiration of the VAPID JWT. (UNIX timestamp) |
| return | array | Returns an array with the 'Authorization' and 'Crypto-Key' values to be used as headers |
/**
* @dataProvider vapidProvider
*
* @param $audience
* @param $vapid
* @param $expiration
* @param $expectedAuthorization
* @param $expectedCryptoKey
*/
public function testGetVapidHeaders($audience, $vapid, $expiration, $expectedAuthorization, $expectedCryptoKey)
{
$vapid = VAPID::validate($vapid);
$headers = VAPID::getVapidHeaders($audience, $vapid['subject'], $vapid['publicKey'], $vapid['privateKey'], $expiration);
$this->assertArrayHasKey('Authorization', $headers);
$this->assertEquals(Utils::safeStrlen($expectedAuthorization), Utils::safeStrlen($headers['Authorization']));
$this->assertEquals($this->explodeAuthorization($expectedAuthorization), $this->explodeAuthorization($headers['Authorization']));
$this->assertArrayHasKey('Crypto-Key', $headers);
$this->assertEquals($expectedCryptoKey, $headers['Crypto-Key']);
}
private function prepareAndSend(array $notifications)
{
$responses = array();
/** @var Notification $notification */
foreach ($notifications as $notification) {
$endpoint = $notification->getEndpoint();
$payload = $notification->getPayload();
$userPublicKey = $notification->getUserPublicKey();
$userAuthToken = $notification->getUserAuthToken();
$options = $notification->getOptions($this->getDefaultOptions());
$auth = $notification->getAuth($this->auth);
if (isset($payload) && isset($userPublicKey) && isset($userAuthToken)) {
$encrypted = Encryption::encrypt($payload, $userPublicKey, $userAuthToken, $this->nativePayloadEncryptionSupport);
$headers = array('Content-Length' => Utils::safeStrlen($encrypted['cipherText']), 'Content-Type' => 'application/octet-stream', 'Content-Encoding' => 'aesgcm', 'Encryption' => 'salt=' . $encrypted['salt'], 'Crypto-Key' => 'dh=' . $encrypted['localPublicKey']);
$content = $encrypted['cipherText'];
} else {
$headers = array('Content-Length' => 0);
$content = '';
}
$headers['TTL'] = $options['TTL'];
if (isset($options['urgency'])) {
$headers['Urgency'] = $options['urgency'];
}
if (isset($options['topic'])) {
$headers['Topic'] = $options['topic'];
}
// if GCM
if (substr($endpoint, 0, strlen(self::GCM_URL)) === self::GCM_URL) {
if (array_key_exists('GCM', $auth)) {
$headers['Authorization'] = 'key=' . $auth['GCM'];
} else {
throw new \ErrorException('No GCM API Key specified.');
}
} elseif (array_key_exists('VAPID', $auth)) {
$vapid = $auth['VAPID'];
$audience = parse_url($endpoint, PHP_URL_SCHEME) . '://' . parse_url($endpoint, PHP_URL_HOST);
if (!parse_url($audience)) {
throw new \ErrorException('Audience "' . $audience . '"" could not be generated.');
}
$vapidHeaders = VAPID::getVapidHeaders($audience, $vapid['subject'], $vapid['publicKey'], $vapid['privateKey']);
$headers['Authorization'] = $vapidHeaders['Authorization'];
if (array_key_exists('Crypto-Key', $headers)) {
// FUTURE replace ';' with ','
$headers['Crypto-Key'] .= ';' . $vapidHeaders['Crypto-Key'];
} else {
$headers['Crypto-Key'] = $vapidHeaders['Crypto-Key'];
}
}
$responses[] = $this->sendRequest($endpoint, $headers, $content);
}
return $responses;
}
