/**
* Get a signing key from a consumer and token.
*
* $key = $signature->key($consumer, $token);
*
* [!!] This method implements the signing key of [OAuth 1.0 Spec 9](http://oauth.net/core/1.0/#rfc.section.9).
*
* @param Consumer consumer
* @param Token token
* @return string
* @uses OAuth1::urlencode
*/
public function key(OAuth_Consumer $consumer, OAuth_Token $token = NULL)
{
$key = OAuth1::urlencode($consumer->secret) . '&';
if ($token) {
$key .= OAuth1::urlencode($token->secret);
}
return $key;
}
/**
* Convert the request parameters into an `Authorization` header.
*
* $header = $request->as_header();
*
* [!!] This method implements [OAuth 1.0 Spec 5.4.1](http://oauth.net/core/1.0/#rfc.section.5.4.1).
*
* @return string
*/
public function as_header()
{
$header = array();
foreach ($this->params as $name => $value) {
if (strpos($name, 'oauth_') === 0) {
// OAuth Spec 5.4.1
// "Parameter names and values are encoded per Parameter Encoding [RFC 3986]."
$header[] = OAuth1::urlencode($name) . '="' . OAuth1::urlencode($value) . '"';
}
}
return 'OAuth ' . implode(', ', $header);
}
/**
* Normalize all request parameters into a string.
*
* $query = OAuth1::normalize_params($params);
*
* [!!] This method implements [OAuth 1.0 Spec 9.1.1](http://oauth.net/core/1.0/#rfc.section.9.1.1).
*
* @param array request parameters
* @return string
* @uses OAuth1::urlencode
*/
public static function normalize_params(array $params = NULL)
{
if (!$params) {
// Nothing to do
return '';
}
// Encode the parameter keys and values
$keys = OAuth1::urlencode(array_keys($params));
$values = OAuth1::urlencode(array_values($params));
// Recombine the parameters
$params = array_combine($keys, $values);
// OAuth Spec 9.1.1 (1)
// "Parameters are sorted by name, using lexicographical byte value ordering."
uksort($params, 'strcmp');
// Create a new query string
$query = array();
foreach ($params as $name => $value) {
if (is_array($value)) {
// OAuth Spec 9.1.1 (1)
// "If two or more parameters share the same name, they are sorted by their value."
$value = natsort($value);
foreach ($value as $duplicate) {
$query[] = $name . '=' . $duplicate;
}
} else {
$query[] = $name . '=' . $value;
}
}
return implode('&', $query);
}
