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modules/payu/tools/sdk/OpenPayU/OpenPayU.php

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+<?php
+/**
+ * OpenPayU Standard Library
+ *
+ * @copyright  Copyright (c) 2011-2016 PayU
+ * @license    http://opensource.org/licenses/LGPL-3.0  Open Software License (LGPL 3.0)
+ * http://www.payu.com
+ * http://developers.payu.com
+ */
+
+class OpenPayU
+{
+    protected static function build($data)
+    {
+        $instance = new OpenPayU_Result();
+
+        if (array_key_exists('status', $data) && $data['status'] == 'WARNING_CONTINUE_REDIRECT') {
+            $data['status'] = 'SUCCESS';
+            $data['response']['status']['statusCode'] = 'SUCCESS';
+        }
+
+        $instance->init($data);
+
+        return $instance;
+    }
+
+    /**
+     * @param $data
+     * @param $incomingSignature
+     * @throws OpenPayU_Exception_Authorization
+     */
+    public static function verifyDocumentSignature($data, $incomingSignature)
+    {
+        $sign = OpenPayU_Util::parseSignature($incomingSignature);
+
+        if ($sign === null || !array_key_exists('signature', $sign) || !array_key_exists('algorithm', $sign)) {
+            throw new OpenPayU_Exception_Authorization('Signature not found');
+        }
+
+        if (false === OpenPayU_Util::verifySignature(
+                $data,
+                $sign['signature'],
+                OpenPayU_Configuration::getSignatureKey(),
+                $sign['algorithm'])
+        ) {
+            throw new OpenPayU_Exception_Authorization('Invalid signature - ' . $sign['signature']);
+        }
+    }
+
+    /**
+     * @return AuthType
+     * @throws OpenPayU_Exception
+     */
+    protected static function getAuth()
+    {
+        if (OpenPayU_Configuration::getOauthClientId() && OpenPayU_Configuration::getOauthClientSecret()) {
+            $authType = new AuthType_Oauth(OpenPayU_Configuration::getOauthClientId(), OpenPayU_Configuration::getOauthClientSecret());
+        } else {
+            $authType = new AuthType_Basic(OpenPayU_Configuration::getMerchantPosId(), OpenPayU_Configuration::getSignatureKey());
+        }
+
+        return $authType;
+    }
+
+
+}