/**
* Implements section 6.3 of the OAuth spec.
*/
private function exchangeRequestToken(RemoteContentRequest $request)
{
try {
$accessor = $this->accessorInfo->getAccessor();
$url = $accessor->consumer->callback_url->accessTokenURL;
$msgParams = array();
$msgParams[ShindigOAuth::$OAUTH_TOKEN] = $accessor->requestToken;
self::addIdentityParams($msgParams, $request->getToken());
$callbackUrl = $this->requestParams->getReceivedCallback();
if (strlen($callbackUrl) > 0) {
$parsed_url = parse_url($callbackUrl);
parse_str($parsed_url["query"], $url_params);
if (strlen($url_params["oauth_token"]) > 0 && strlen($url_params["oauth_verifier"]) > 0 && $url_params["oauth_token"] == $accessor->requestToken) {
$msgParams[ShindigOAuth::$OAUTH_VERIFIER] = $url_params["oauth_verifier"];
} else {
throw new GadgetException("Invalid received callback URL: " . $callbackUrl);
}
}
$request = $this->newRequestMessageParams($url->url, $msgParams);
$reply = $this->sendOAuthMessage($request);
$reply->requireParameters(array(ShindigOAuth::$OAUTH_TOKEN, ShindigOAuth::$OAUTH_TOKEN_SECRET));
$accessor->accessToken = $reply->get_parameter(ShindigOAuth::$OAUTH_TOKEN);
$accessor->tokenSecret = $reply->get_parameter(ShindigOAuth::$OAUTH_TOKEN_SECRET);
} catch (Exception $e) {
// It's unfortunate the OAuth libraries throw a generic Exception.
throw new GadgetException("INTERNAL SERVER ERROR: " . $e);
}
}
