/**
* Is signature valid?
*
* @param RequestInterface $request Request
* @param CredentialsInterface $credentials Credentials
* @throws DriftExceededException If timestamp greater than or less than allowable drift
* @throws SignatureMissingException If signature is missing from request
* @throws TimestampMissingException If timestamp is missing from request
* @return boolean
*/
public function isValid(RequestInterface $request, CredentialsInterface $credentials)
{
$params = $request->getParams();
$this->isSignaturePresent($params);
$this->isTimestampPresent($params);
$this->isDriftExceeded($params);
return $params['signature'] === $this->signature->createSignature($request, $credentials);
}
public function testMissingTimestampThrowsException()
{
$this->setExpectedException('QueryAuth\\Exception\\TimestampMissingException', 'Request must contain a timestamp.');
$this->request->expects($this->once())->method('getParams')->willReturn(['signature' => 12345]);
$this->requestValidator->isValid($this->request, $this->credentials);
}
/**
* Creates signature
*
* {@inheritDoc}
*/
public function createSignature(RequestInterface $request, CredentialsInterface $credentials)
{
$data = $request->getMethod() . "\n" . $request->getHost() . "\n" . $this->getAbsolutePath($request->getPath()) . "\n" . $this->normalizeParameters($request->getParams());
return \base64_encode(\hash_hmac('sha256', $data, $credentials->getSecret(), true));
}