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ZeedFramework/library/Zeed/OAuth/Signature/Abstract.php

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+<?php
+/**
+ * Zeed Platform Project
+ * Based on Zeed Framework & Zend Framework.
+ * 
+ * BTS - Billing Transaction Service
+ * CAS - Central Authentication Service
+ * 
+ * LICENSE
+ * http://www.zeed.com.cn/license/
+ * 
+ * @category   Zeed
+ * @package    Zeed_ChangeMe
+ * @subpackage ChangeMe
+ * @copyright  Copyright (c) 2010 Zeed Technologies PRC Inc. (http://www.zeed.com.cn)
+ * @author     Zeed Team (http://blog.zeed.com.cn)
+ * @since      Jul 5, 2010
+ * @version    SVN: $Id: Abstract.php 5517 2010-07-05 08:12:54Z woody $
+ */
+
+/**
+ * A class for implementing a Signature Method
+ * See section 9 ("Signing Requests") in the spec
+ */
+abstract class Zeed_OAuth_Signature_Abstract
+{
+    /**
+     * Needs to return the name of the Signature Method (ie HMAC-SHA1)
+     * @return string
+     */
+    abstract public function getName();
+    
+    /**
+     * Build up the signature
+     * NOTE: The output of this function MUST NOT be urlencoded.
+     * the encoding is handled in OAuthRequest when the final
+     * request is serialized
+     * @param OAuthRequest $request
+     * @param OAuthConsumer $consumer
+     * @param OAuthToken $token
+     * @return string
+     */
+    abstract public function buildSignature($request, $consumer, $token);
+    
+    /**
+     * Verifies that a given signature is correct
+     * @param OAuthRequest $request
+     * @param OAuthConsumer $consumer
+     * @param OAuthToken $token
+     * @param string $signature
+     * @return bool
+     */
+    public function checkSignature($request, $consumer, $token, $signature)
+    {
+        $built = $this->buildSignature($request, $consumer, $token);
+        return $built == $signature;
+    }
+}
+
+// End ^ Native EOL ^ encoding