[Callback Authentication] Signatures do not match

[revroad-dev]

When constructing ShippingEasy_Authenticator(), unset($params["api_signature"]) causes $params to be empty. Consequently when constructing ShippingEasy_Signature(), the plaintext() method excludes $params.

public function plaintext()
  {
    $parts = array($this->getHttpMethod());
    $parts[] = $this->getPath();

    if (!empty($this->getParams()))
      $parts[] = http_build_query($this->getParams());

    if ($this->getJsonBody() != "null")
      $parts[] = $this->getJsonBody();

    return implode("&", $parts);
  }

Result: Signatures do not match and authentication fails.

In order to achieve authentication I had to append an extra '&' to the end of $path in order to get the signature supplied by the server to match.