/**
* {@inheritDoc}
*/
public function buildSignature(Request $request, Consumer $consumer, Token $token = null)
{
$signatureBase = $request->getSignatureBaseString();
$parts = [$consumer->secret, null !== $token ? $token->secret : ""];
$parts = Util::urlencodeRfc3986($parts);
$key = implode('&', $parts);
return base64_encode(hash_hmac('sha1', $signatureBase, $key, true));
}
/**
* Builds the Authorization: header
*
* @return string
* @throws TwitterOAuthException
*/
public function toHeader()
{
$first = true;
$out = 'Authorization: OAuth';
foreach ($this->parameters as $k => $v) {
if (substr($k, 0, 5) != "oauth") {
continue;
}
if (is_array($v)) {
throw new TwitterOAuthException('Arrays not supported in headers');
}
$out .= $first ? ' ' : ', ';
$out .= Util::urlencodeRfc3986($k) . '="' . Util::urlencodeRfc3986($v) . '"';
$first = false;
}
return $out;
}
/**
* Generates the basic string serialization of a token that a server
* would respond to request_token and access_token calls with
*
* @return string
*/
public function __toString()
{
return sprintf("oauth_token=%s&oauth_token_secret=%s", Util::urlencodeRfc3986($this->key), Util::urlencodeRfc3986($this->secret));
}
