CC Avenue - Invalid amount

[devyani]

Hi,
All my clients are getting the error - Invalid amount. Error code -94.
When I checked with the ccavenue guys, they say that the "we would like to inform you that the description of Error Code 94 is "Amount Invalid" which occurs when amount parameter is missing or empty from your site while connecting to ccavenue payment page. We suggest you to kindly look into it that you post the Amount value while posting to CCAvenue."

I had hired somebody to do upgrade zen cart ( from 1.3.9h to 1.5.1) for me. I am suspecting the error has started to come after that.
This is a live site. Please help.
My Site - www.bambino.co.in

My ccavenue.php file ( as downloaded from the plugin) :

<?php

class ccavenue {
var $code, $title, $description, $enabled;

////////////////////////////////////////////////////
// Class constructor -> initialize class variables.
// Sets the class code, description, and status.
////////////////////////////////////////////////////


function ccavenue() {
global $order;

$this->code = 'ccavenue';
$this->title = MODULE_PAYMENT_CCAVENUE_TEXT_TITLE;
$this->description = MODULE_PAYMENT_CCAVENUE_TEXT_DESCRIPTION;
$this->sort_order = MODULE_PAYMENT_CCAVENUE_SORT_ORDER;
$this->enabled = ((MODULE_PAYMENT_CCAVENUE_STATUS == 'True') ? true : false);
$this->check_hash = false;
$this->secret_word = '';
$this->login_id = MODULE_PAYMENT_CCAVENUE_LOGIN;

if ((int)MODULE_PAYMENT_CCAVENUE_ORDER_STATUS_ID > 0) {
$this->order_status = MODULE_PAYMENT_CCAVENUE_ORDER_STATUS_ID;
}



// class methods
function update_status() {
global $order, $db;

if ( ($this->enabled == true) && ((int)MODULE_PAYMENT_CCAVENUE_ZONE > 0) ) {
$check_flag = false;
$check = $db->Execute("select zone_id from " . TABLE_ZONES_TO_GEO_ZONES . " where geo_zone_id = '" . MODULE_PAYMENT_CCAVENUE_ZONE . "' and zone_country_id = '" . $order->billing['country']['id'] . "' order by zone_id");
while (!$check->EOF) {
if ($check->fields['zone_id'] < 1) {
$check_flag = true;
break;
} elseif ($check->fields['zone_id'] == $order->billing['zone_id']) {
$check_flag = true;
break;
}
$check->MoveNext();
}

if ($check_flag == false) {
$this->enabled = false;
}
}
}

// Which Form Action are we going to use?
// If we are in 'Testmode' we use the 'Test Server'

if (MODULE_PAYMENT_CCAVENUE_LOGIN > '199999') {
$this->form_action_url = 'https://www.ccavenue.com/shopzone/cc_details.jsp';
} else {
$this->form_action_url = 'https://www.ccavenue.com/shopzone/cc_details.jsp';
}
}
////////////////////////////////////////////////////
// Javascript form validation
// Check the user input submited on checkout_payment.php with javascript (client-side).
// Examples: validate credit card number, make sure required fields are filled in
////////////////////////////////////////////////////

function javascript_validation() {
return false;
}


////////////////////////////////////////////////////
// !Form fields for user input
// Output any required information in form fields
// Examples: ask for extra fields (credit card number), display extra information
////////////////////////////////////////////////////


function selection() {
global $order;

$selection = array('id' => $this->code,
'module' => $this->title
);

return $selection;
}


////////////////////////////////////////////////////
// Pre confirmation checks (ie, check if credit card
// information is right before sending the info to
// the payment server
////////////////////////////////////////////////////

function pre_confirmation_check() {
return false;
}


////////////////////////////////////////////////////
// Functions to execute before displaying the checkout
// confirmation page
////////////////////////////////////////////////////

function confirmation() {
global $_POST;
/* if (MODULE_PAYMENT_CCAVENUE_CONVERSION == 'Enabled'){
if (DEFAULT_CURRENCY <> 'USD'){
$title = $this->title . MODULE_PAYMENT_CCAVENUE_CURRENCY_CONVERSITION;
}
}else { */
// $title = $this->title;
$confirmation = array('title' => $title);
return $confirmation;
//}
}

////////////////////////////////////////////////////
// Functions to execute before finishing the form
// Examples: add extra hidden fields to the form
////////////////////////////////////////////////////

function process_button() {
global $_POST, $order, $currency, $currencies;
if (MODULE_PAYMENT_CCAVENUE_CONVERSION == 'Enabled'){
if (DEFAULT_CURRENCY <> 'INR'){
$cOrderTotal = $currencies->get_value("INR") * $order->info['total'];
}
} else {
$cOrderTotal = $order->info['total'];
}

$MerchantId = MODULE_PAYMENT_CCAVENUE_LOGIN;
$Amount =$cOrderTotal;
$OrderId = date('Ymdhis');
// $Url = zen_href_link(FILENAME_CHECKOUT_PROCESS,'','SSL',true,false);
$Url = zen_href_link(FILENAME_CHECKOUT_PROCESS,'','SSL',true,false);
$pattern='http://www\.';

if(!(Eregi($pattern,$Url,$reg)))
eregi_replace('http://', $pattern, $Url);
$WorkingKey = MODULE_PAYMENT_CCAVENUE_KEY;
$str ="$MerchantId|$OrderId|$Amount|$Url|$WorkingKey";
$adler = 1;
$BASE = 65521 ;

$s1 = $adler & 0xffff ;
$s2 = ($adler >> 16) & 0xffff;
for($i = 0 ; $i < strlen($str) ; $i++)
{
$s1 = ($s1 + Ord($str[$i])) % $BASE ;
$s2 = ($s2 + $s1) % $BASE ;
//echo "s1 : $s1 <BR> s2 : $s2 <BR>";

}
$str = $s2;
$num = 16;

$str = DecBin($str);

for( $i = 0 ; $i < (64 - strlen($str)) ; $i++)
$str = "0".$str ;

for($i = 0 ; $i < $num ; $i++)
{
$str = $str."0";
$str = substr($str , 1 ) ;
//echo "str : $str <BR>";
}
$num=$str;
for ($n = 0 ; $n < strlen($num) ; $n++)
{
$temp = $num[$n] ;
$dec = $dec + $temp*pow(2 , strlen($num) - $n - 1);
}
$Checksum = $dec + $s1;

$process_button_string = zen_draw_hidden_field('Merchant_Id', $MerchantId) .
zen_draw_hidden_field('Amount', $Amount ) .
zen_draw_hidden_field('Order_Id',$OrderId) .
zen_draw_hidden_field('Checksum',$Checksum) .
zen_draw_hidden_field('billing_cust_name', $order->customer['firstname'] . ' ' . $order->customer['lastname']) .
zen_draw_hidden_field('billing_cust_address', $order->customer['street_address'] . ', ' . $order->customer['city'] . ', ' .$order->customer['state']) .
zen_draw_hidden_field('billing_cust_country', $order->customer['country']['title']) .
zen_draw_hidden_field('billing_cust_email', $order->customer['email_address']) .
zen_draw_hidden_field('billing_cust_tel', $order->customer['telephone']) .
zen_draw_hidden_field('billing_zip_code', $order->customer['postcode']) .

zen_draw_hidden_field('delivery_cust_name', $order->customer['firstname'] . ' ' . $order->customer['lastname']) .
zen_draw_hidden_field('delivery_cust_address', $order->customer['street_address'] . ', ' . $order->customer['city'] . ', ' .$order->customer['state'] . ', ' . $order->customer['postcode'] . ', ' . $order->customer['country']['title']) .
zen_draw_hidden_field('delivery_cust_tel', $order->customer['telephone']) .
zen_draw_hidden_field('Redirect_Url',$Url).

$process_button_string .= zen_draw_hidden_field(zen_session_name(), zen_session_id());
return $process_button_string;
}
////////////////////////////////////////////////////
// Test Credit Card# 4111111111111111
// Expiration any date after current date.
// Functions to execute before processing the order
// Examples: retreive result from online payment services
////////////////////////////////////////////////////

function before_process() {
global $HTTP_POST_VARS, $customer_id, $MerchantId, $Amount, $OrderId, $WorkingKey, $checksum, $sum, $AuthDesc;

$MerchantId = $_REQUEST['Merchant_Id'];
$Amount = $_REQUEST['Amount'];
$OrderId = $_REQUEST['Order_Id'];
$Checksum = $_REQUEST['Checksum'];
$AuthDesc = $_REQUEST['AuthDesc'];
$WorkingKey = MODULE_PAYMENT_CCAVENUE_KEY;

$str ="$MerchantId|$OrderId|$Amount|$AuthDesc|$WorkingKey";


$adler = 1;
$BASE = 65521 ;

$s1 = $adler & 0xffff ;
$s2 = ($adler >> 16) & 0xffff;
for($i = 0 ; $i < strlen($str) ; $i++)
{
$s1 = ($s1 + Ord($str[$i])) % $BASE ;
$s2 = ($s2 + $s1) % $BASE ;
//echo "s1 : $s1 <BR> s2 : $s2 <BR>";

}

$str = $s2;
$num = 16;

$str = DecBin($str);

for( $i = 0 ; $i < (64 - strlen($str)) ; $i++)
$str = "0".$str ;

for($i = 0 ; $i < $num ; $i++)
{
$str = $str."0";
$str = substr($str , 1 ) ;
//echo "str : $str <BR>";
}
$num=$str;
for ($n = 0 ; $n < strlen($num) ; $n++)
{
$temp = $num[$n] ;
$dec = $dec + $temp*pow(2 , strlen($num) - $n - 1);
}
$sum = $dec +$s1 ;

if($sum == $Checksum)
$Checksum = 'true' ;
else
$Checksum = 'false';

if ($Checksum != "true") {

zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, 'error_message=' . urlencode(MODULE_PAYMENT_CCAVENUE_ALERT_ERROR_MESSAGE), 'SSL', true, false));
}

if($Checksum =='true' && $AuthDesc == 'N'){



zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, 'error_message=' . urlencode(MODULE_PAYMENT_CCAVENUE_TEXT_ERROR_MESSAGE), 'SSL', true, false));
}

/* we do not get any response_code from ccavenue so disabled this check
if ($_POST['x_response_code'] != '1') {
zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, 'error_message=' . urlencode(MODULE_PAYMENT_CCAVENUE_TEXT_ERROR_MESSAGE), 'SSL', true, false));
}
*/
}

function after_process() {
return false;
}
////////////////////////////////////////////////////
// If an error occurs with the process, output error messages here
////////////////////////////////////////////////////

function get_error() {
global $_GET;

$error = array('title' => MODULE_PAYMENT_CCAVENUE_TEXT_ERROR,
'error' => stripslashes(urldecode($_GET['error'])));

return $error;
}

////////////////////////////////////////////////////
// Check if module is installed (Administration Tool)
// TABLES: configuration
////////////////////////////////////////////////////


function check() {
global $db;
if (!isset($this->_check)) {
$check_query = $db->Execute("select configuration_value from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_PAYMENT_CCAVENUE_STATUS'");
$this->_check = $check_query->RecordCount();
}
return $this->_check;
}

////////////////////////////////////////////////////
// Install the module (Administration Tool)
// TABLES: configuration
////////////////////////////////////////////////////

function install() {
global $db;
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) values ('Enable CCAvenue Module', 'MODULE_PAYMENT_CCAVENUE_STATUS', 'True', 'Do you want to accept CCAvenue payments?', '6', '1', 'zen_cfg_select_option(array(\'True\', \'False\'), ', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Merchant_Id', 'MODULE_PAYMENT_CCAVENUE_LOGIN', 'Your_CCAVENUE_ID', 'Merchant ID used for the CCAvenue service', '6', '2', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Sort order of display.', 'MODULE_PAYMENT_CCAVENUE_SORT_ORDER', '0', 'Sort order of display. Lowest is displayed first.', '6', '5', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, use_function, set_function, date_added) values ('Payment Zone', 'MODULE_PAYMENT_CCAVENUE_ZONE', '0', 'If a zone is selected, only enable this payment method for that zone.', '6', '6', 'zen_get_zone_class_title', 'zen_cfg_pull_down_zone_classes(', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, use_function, date_added) values ('Set Order Status', 'MODULE_PAYMENT_CCAVENUE_ORDER_STATUS_ID', '0', 'Set the status of orders made with this payment module to this value', '6', '7', 'zen_cfg_pull_down_order_statuses(', 'zen_get_order_status_name', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) values ('Currency Converter', 'MODULE_PAYMENT_CCAVENUE_CONVERSION', 'Enabled', 'Currency Conversion', '6', '10', 'zen_cfg_select_option(array(\'Enabled\', \'Disable\'), ', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Working_Key', 'MODULE_PAYMENT_CCAVENUE_KEY', 'Working_Key', 'put in the alphanumeric key from MARS Panel', '6', '3', now())");
}

////////////////////////////////////////////////////
// Remove the module (Administration Tool)
// TABLES: configuration
////////////////////////////////////////////////////

function remove() {
global $db;
$db->Execute("delete from " . TABLE_CONFIGURATION . " where configuration_key in ('" . implode("', '", $this->keys()) . "')");
}

////////////////////////////////////////////////////
// Create our Key - > Value Arrays
////////////////////////////////////////////////////
function keys() {
return array('MODULE_PAYMENT_CCAVENUE_STATUS', 'MODULE_PAYMENT_CCAVENUE_LOGIN','MODULE_PAYMENT_CCAVENUE_KEY', 'MODULE_PAYMENT_CCAVENUE_ZONE', 'MODULE_PAYMENT_CCAVENUE_ORDER_STATUS_ID', 'MODULE_PAYMENT_CCAVENUE_SORT_ORDER', 'MODULE_PAYMENT_CCAVENUE_CONVERSION');
}
}
?>

[devyani]

I was able to solve this, with the help of a friend.
Just thought of sharing the solution.
So basically, the total amount was not rounded off properly.
We inserted the following lines :
if (is_string($order->info['total'])) {
$order->info['total'] = round(floatval($order->info['total']), 2);
} else if (is_float($order->info['total']) or is_int($order->info['total'])) {
$order->info['total'] = round($order->info['total'], 2);
}

in tpl_checkout_confirmation_default.php

and all is good now !