/**
* Parse OAuth WWW-Authenticate header and either add them to an existing
* message or create a new message.
*
* @param msg
* @param resp
* @return the updated message.
*/
private function parseAuthHeader(ShindigOAuthRequest $msg = null, RemoteContentRequest $resp)
{
if ($msg == null) {
$msg = ShindigOAuthRequest::from_request();
}
$authHeaders = $resp->getResponseHeader("WWW-Authenticate");
if ($authHeaders != null) {
$msg->set_parameters(ShindigOAuthUtil::decodeAuthorization($authHeaders));
}
return $msg;
}
/**
* Needed in OAuthFetcher.php
*
* Parse the parameters from an OAuth Authorization or WWW-Authenticate
* header. The realm is included as a parameter. If the given header doesn't
* start with "OAuth ", return an empty list.
*
* @param string $authorization
* @return array
*/
public static function decodeAuthorization($authorization)
{
$into = array();
if ($authorization != null) {
$m = ereg(ShindigOAuthUtil::$AUTHORIZATION, $authorization);
if ($m !== false) {
if (strpos($authorization, ShindigOAuthUtil::$AUTH_SCHEME) == 0) {
$authorization = str_replace("OAuth ", "", $authorization);
$authParams = explode(", ", $authorization);
foreach ($authParams as $params) {
$m = ereg(ShindigOAuthUtil::$NVP, $params);
if ($m == 1) {
$keyValue = explode("=", $params);
$name = ShindigOAuthUtil::urlencode_rfc3986($keyValue[0]);
$value = ShindigOAuthUtil::urlencode_rfc3986(str_replace("\"", "", $keyValue[1]));
$into[$name] = $value;
}
}
}
}
}
return $into;
}
