CCAVENUE payment plugin - help

Hi,
I have almost done the plugin, all payment processing is working as expected but, the invoice is updated to Paid, However, I can see successful transaction from the ccavenue merchant page, It is problem of the status updating part of the script. Can somebody help me? The code is below

Code:

<?php
/**
* @table paysystems
* @id ccavenue
* @title ccavenue
* @visible_link http://ccavenue.in/
* @recurring none
* @logo_url ccavenue.png
*/
include_once("libFunctions.php");
class Am_Paysystem_ccavenue extends Am_Paysystem_Abstract{
    const PLUGIN_STATUS = self::STATUS_BETA;
    const PLUGIN_REVISION = '4.3.3';
 
    const LIVE_URL ='https://www.ccavenue.com/shopzone/cc_details.jsp';
    protected $defaultTitle = 'ccavenue';
    protected $defaultDescription = 'Pay by credit card / Debit Card / Net Banking'; 
   
    public function getSupportedCurrencies()
    {
        return array('INR');
    }
 
    public function _initSetupForm(Am_Form_Setup $form)
    {
        $form->addText('account_Id')->setLabel(array('Merchant Account Id'));
        $form->addText('secret')->setLabel(array('Merchant Secret Key'));
//        $form->addText('Return_Url')->setLabel(array('Return URL after Payment'));
    }
    public function _process(Invoice $invoice, Am_Request $request, Am_Paysystem_Result $result)
    {
        $u = $invoice->getUser();
        $a = new Am_Paysystem_Action_Form(self::LIVE_URL);
        $vars = array();
        $vars['Merchant_Id'] = $this->getConfig('account_Id');
        $vars['Order_Id'] = $invoice->public_id;
        $vars['Amount'] = $invoice->first_total;
        $vars['Redirect_Url'] = $this->getReturnUrl();
        $vars['WorkingKey'] = $this->getConfig('secret');
        $vars['Currency'] = $invoice->currency;
        $vars['TxnType'] = 'A';
        $vars['actionID'] = 'TXN';
        foreach($vars as $k=>$v){
            $a->$k = $v;
        }
        $a->billing_cust_notes = $invoice->getLineDescription();
        $a->billing_cust_name = $u->name_f.' '.$u->name_l;
        $a->billing_cust_address = $u->street;
        $a->billing_cust_city = $u->city;
        $a->billing_cust_state = substr($u->state, -2);
        $a->billing_zip_code = $u->zip;
        $a->billing_cust_country = $u->country;
        $a->billing_cust_tel = $u->phone;
        $a->billing_cust_email = $u->email;
        $a->Checksum = getChecksum($a->Merchant_Id, $a->Order_Id, $a->Amount, $a->Redirect_Url, $a->WorkingKey);
        $vars = array_filter($vars);
        foreach($vars as $k => $v)
        {
            $a->ccaRequest .= "$k=$v". "&";
        }
        $a->ccaRequest .= "Checksum=".$a->Checksum;
        exec("java -jar ccavutil.jar  $a->WorkingKey \"$a->ccaRequest\" enc", $a->encRequest);
        $result->setAction($a);
       
    }
    public function createTransaction(Am_Request $request, Zend_Controller_Response_Http $response, array $invokeArgs)
    {
       
    }
    public function createThanksTransaction(\Am_Request $request, \Zend_Controller_Response_Http $response, array $invokeArgs)
    {
        return new Am_Paysystem_Transaction_ccavenue($this, $request, $response, $invokeArgs);
    }
    public function getRecurringType()
    {
        return self::REPORTS_NOT_RECURRING;
    }
}
class Am_Paysystem_Transaction_ccavenue extends Am_Paysystem_Transaction_Incoming {
   
    function __construct(Am_Paysystem_Abstract $plugin, Am_Request $request, Zend_Controller_Response_Http $response, $invokeArgs)
    {
        parent::__construct($plugin, $request, $response, $invokeArgs);
    }
 
    public function validateSource()
    {
    $WorkingKey = $plugin->getConfig('secret') ; //put in the 32 bit working key in the quotes provided here
    $encResponse=$_REQUEST["encResponse"];
    exec("java -jar ccavutil.jar $WorkingKey \"$encResponse\" dec",$ccaResponse);
    $tok = strtok($ccaResponse[0],"&");
    $param;
    $value;
    $allKeys = array();
    $index=0;
    $MerchantId="";
    $OrderId="";
    $Amount="";
    $AuthDesc="";
    $avnChecksum="";
    while ($tok !== false)
    {
        $temp = $tok;
        list($param,$value) = preg_split("/[\=]/",$temp,2);
        $allParams["$param"] = $value;
        $allKeys[$index++] = $param;
        $tok = strtok("&");
    }
    if(array_key_exists("Merchant_Id",$allParams)) $MerchantId = $allParams["Merchant_Id"];
    if(array_key_exists("Order_Id",$allParams)) $OrderId = $allParams["Order_Id"];
    if(array_key_exists("Amount",$allParams)) $Amount = $allParams["Amount"];
    if(array_key_exists("AuthDesc",$allParams)) $AuthDesc = $allParams["AuthDesc"];
    if(array_key_exists("Checksum",$allParams)) $avnChecksum = $allParams["Checksum"];
    $Checksum = verifyChecksum($MerchantId, $OrderId, $Amount, $AuthDesc, $WorkingKey, $avnChecksum);
    return true;
    }
 
    function findInvoiceId()
    {
        return $this->$allParams["nb_order_no"];
    }
    public function getUniqId()
    {
        return $this->$allParams["nb_bid"];
    }
    public function validateStatus()
    {
            return ($this->$Checksum && $this->$allParams["AuthDesc"] ==="Y")? true : false;
    }
    public function validateTerms()
    {
        return $this->$allParams["Amount"] == $this->invoice->first_total;
    }
}
?>

Ok got it done

@rviyengar Is this plugin working for older single currency or newer multi currency platform of ccavenue.

The plugin is not working for me...

The plugin is written for older ccavenue platform. It has to be changed for newer ccavenue platform to get it working right. I got it customised through a programmer to work for me. It working fine for multi currency now.