<?php
/**
 * The PLAINTEXT method does not provide any security protection and SHOULD only be used
 * over a secure channel such as HTTPS. It does not use the Signature Base String.
 *   - Chapter 9.4 ("PLAINTEXT")
 */

if ( ! class_exists('OAuthSignatureMethod'))
{
	require_once __DIR__ . '/OAuthSignatureMethod.php';
}

class OAuthSignatureMethod_PLAINTEXT extends OAuthSignatureMethod
{
	public function get_name()
	{
		return "PLAINTEXT";
	}

	/**
	 * oauth_signature is set to the concatenated encoded values of the Consumer Secret and
	 * Token Secret, separated by a '&' character (ASCII code 38), even if either secret is
	 * empty. The result MUST be encoded again.
	 *   - Chapter 9.4.1 ("Generating Signatures")
	 *
	 * Please note that the second encoding MUST NOT happen in the SignatureMethod, as
	 * OAuthRequest handles this!
	 */
	public function build_signature($request, $consumer, $token)
	{
		$key_parts = [
			$consumer->secret,
			($token) ? $token->secret : "",
		];

		$key_parts            = OAuthUtil::urlencode_rfc3986($key_parts);
		$key                  = implode('&', $key_parts);
		$request->base_string = $key;

		return $key;
	}
}