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<?php
/*
  $Id: $

  osCommerce, Open Source E-Commerce Solutions
  http://www.oscommerce.com

  Copyright (c) 2007 osCommerce

  Released under the GNU General Public License
*/

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

// class constructor
    function paypal_ipn() {
      global $order;

      $this->code = 'paypal_ipn';
      $this->title = MODULE_PAYMENT_PAYPAL_IPN_TEXT_TITLE;
      $this->public_title = MODULE_PAYMENT_PAYPAL_IPN_TEXT_PUBLIC_TITLE;
      $this->description = MODULE_PAYMENT_PAYPAL_IPN_TEXT_DESCRIPTION;
      $this->sort_order = MODULE_PAYMENT_PAYPAL_IPN_SORT_ORDER;
      $this->enabled = ((MODULE_PAYMENT_PAYPAL_IPN_STATUS == 'True') ? true : false);

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

      if (is_object($order)) $this->update_status();

      if (MODULE_PAYMENT_PAYPAL_IPN_GATEWAY_SERVER == 'Live') {
        $this->form_action_url = 'https://www.paypal.com/cgi-bin/webscr';
      } else {
        $this->form_action_url = 'https://www.sandbox.paypal.com/cgi-bin/webscr';
      }
    }

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

      if ( ($this->enabled == true) && ((int)MODULE_PAYMENT_PAYPAL_IPN_ZONE > 0) ) {
        $check_flag = false;
        $check_query = tep_db_query("select zone_id from " . TABLE_ZONES_TO_GEO_ZONES . " where geo_zone_id = '" . MODULE_PAYMENT_PAYPAL_IPN_ZONE . "' and zone_country_id = '" . $order->billing['country']['id'] . "' order by zone_id");
        while ($check = tep_db_fetch_array($check_query)) {
          if ($check['zone_id'] < 1) {
            $check_flag = true;
            break;
          } elseif ($check['zone_id'] == $order->billing['zone_id']) {
            $check_flag = true;
            break;
          }
        }

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

    function javascript_validation() {
      return false;
    }

    function selection() {
      return array('id' => $this->code,
                   'module' => $this->public_title);
    }

    function pre_confirmation_check() {
      global $cartID, $cart;

      if (empty($cart->cartID)) {
        $cartID = $cart->cartID = $cart->generate_cart_id();
      }

      if (!tep_session_is_registered('cartID')) {
        tep_session_register('cartID');
      }
    }

    function confirmation() {
      global $cartID, $cart_PayPal_IPN_ID, $customer_id, $languages_id, $order, $order_total_modules;

      if (tep_session_is_registered('cartID')) {
        $insert_order = false;

        if (tep_session_is_registered('cart_PayPal_IPN_ID')) {
          $order_id = substr($cart_PayPal_IPN_ID, strpos($cart_PayPal_IPN_ID, '-')+1);

          $curr_check = tep_db_query("select currency from " . TABLE_ORDERS . " where orders_id = '" . (int)$order_id . "'");
          $curr = tep_db_fetch_array($curr_check);

          if ( ($curr['currency'] != $order->info['currency']) || ($cartID != substr($cart_PayPal_IPN_ID, 0, strlen($cartID))) ) {
            $check_query = tep_db_query('select orders_id from ' . TABLE_ORDERS_STATUS_HISTORY . ' where orders_id = "' . (int)$order_id . '" limit 1');

            if (tep_db_num_rows($check_query) < 1) {
              tep_db_query('delete from ' . TABLE_ORDERS . ' where orders_id = "' . (int)$order_id . '"');
              tep_db_query('delete from ' . TABLE_ORDERS_TOTAL . ' where orders_id = "' . (int)$order_id . '"');
              tep_db_query('delete from ' . TABLE_ORDERS_STATUS_HISTORY . ' where orders_id = "' . (int)$order_id . '"');
              tep_db_query('delete from ' . TABLE_ORDERS_PRODUCTS . ' where orders_id = "' . (int)$order_id . '"');
              tep_db_query('delete from ' . TABLE_ORDERS_PRODUCTS_ATTRIBUTES . ' where orders_id = "' . (int)$order_id . '"');
              tep_db_query('delete from ' . TABLE_ORDERS_PRODUCTS_DOWNLOAD . ' where orders_id = "' . (int)$order_id . '"');
            }

            $insert_order = true;
          }
        } else {
          $insert_order = true;
        }

        if ($insert_order == true) {
          $order_totals = array();
          if (is_array($order_total_modules->modules)) {
            reset($order_total_modules->modules);
            while (list(, $value) = each($order_total_modules->modules)) {
              $class = substr($value, 0, strrpos($value, '.'));
              if ($GLOBALS[$class]->enabled) {
                for ($i=0, $n=sizeof($GLOBALS[$class]->output); $i<$n; $i++) {
                  if (tep_not_null($GLOBALS[$class]->output[$i]['title']) && tep_not_null($GLOBALS[$class]->output[$i]['text'])) {
                    $order_totals[] = array('code' => $GLOBALS[$class]->code,
                                            'title' => $GLOBALS[$class]->output[$i]['title'],
                                            'text' => $GLOBALS[$class]->output[$i]['text'],
                                            'value' => $GLOBALS[$class]->output[$i]['value'],
                                            'sort_order' => $GLOBALS[$class]->sort_order);
                  }
                }
              }
            }
          }

          $sql_data_array = array('customers_id' => $customer_id,
                                  'customers_name' => $order->customer['firstname'] . ' ' . $order->customer['lastname'],
                                  'customers_company' => $order->customer['company'],
                                  'customers_street_address' => $order->customer['street_address'],
                                  'customers_suburb' => $order->customer['suburb'],
                                  'customers_city' => $order->customer['city'],
                                  'customers_postcode' => $order->customer['postcode'],
                                  'customers_state' => $order->customer['state'],
                                  'customers_country' => $order->customer['country']['title'],
                                  'customers_telephone' => $order->customer['telephone'],
                                  'customers_email_address' => $order->customer['email_address'],
                                  'customers_address_format_id' => $order->customer['format_id'],
                                  'delivery_name' => $order->delivery['firstname'] . ' ' . $order->delivery['lastname'],
                                  'delivery_company' => $order->delivery['company'],
                                  'delivery_street_address' => $order->delivery['street_address'],
                                  'delivery_suburb' => $order->delivery['suburb'],
                                  'delivery_city' => $order->delivery['city'],
                                  'delivery_postcode' => $order->delivery['postcode'],
                                  'delivery_state' => $order->delivery['state'],
                                  'delivery_country' => $order->delivery['country']['title'],
                                  'delivery_address_format_id' => $order->delivery['format_id'],
                                  'billing_name' => $order->billing['firstname'] . ' ' . $order->billing['lastname'],
                                  'billing_company' => $order->billing['company'],
                                  'billing_street_address' => $order->billing['street_address'],
                                  'billing_suburb' => $order->billing['suburb'],
                                  'billing_city' => $order->billing['city'],
                                  'billing_postcode' => $order->billing['postcode'],
                                  'billing_state' => $order->billing['state'],
                                  'billing_country' => $order->billing['country']['title'],
                                  'billing_address_format_id' => $order->billing['format_id'],
                                  'payment_method' => $order->info['payment_method'],
                                  'cc_type' => $order->info['cc_type'],
                                  'cc_owner' => $order->info['cc_owner'],
                                  'cc_number' => $order->info['cc_number'],
                                  'cc_expires' => $order->info['cc_expires'],
                                  'last_modified' => 'now()',
                                  'orders_status' => $order->info['order_status'],
                                  'currency' => $order->info['currency'],
                                  'currency_value' => $order->info['currency_value']);

          tep_db_perform(TABLE_ORDERS, $sql_data_array);

          $insert_id = tep_db_insert_id();

          for ($i=0, $n=sizeof($order_totals); $i<$n; $i++) {
            $sql_data_array = array('orders_id' => $insert_id,
                                    'title' => $order_totals[$i]['title'],
                                    'text' => $order_totals[$i]['text'],
                                    'value' => $order_totals[$i]['value'],
                                    'class' => $order_totals[$i]['code'],
                                    'sort_order' => $order_totals[$i]['sort_order']);

            tep_db_perform(TABLE_ORDERS_TOTAL, $sql_data_array);
          }

          for ($i=0, $n=sizeof($order->products); $i<$n; $i++) {
            $sql_data_array = array('orders_id' => $insert_id,
                                    'products_id' => tep_get_prid($order->products[$i]['id']),
                                    'products_model' => $order->products[$i]['model'],
                                    'products_name' => $order->products[$i]['name'],
                                    'products_price' => $order->products[$i]['price'],
                                    'final_price' => $order->products[$i]['final_price'],
                                    'products_tax' => $order->products[$i]['tax'],
                                    'products_quantity' => $order->products[$i]['qty']);

            tep_db_perform(TABLE_ORDERS_PRODUCTS, $sql_data_array);

            $order_products_id = tep_db_insert_id();

            $attributes_exist = '0';
            if (isset($order->products[$i]['attributes'])) {
              $attributes_exist = '1';
              for ($j=0, $n2=sizeof($order->products[$i]['attributes']); $j<$n2; $j++) {
                if (DOWNLOAD_ENABLED == 'true') {
                  $attributes_query = "select popt.products_options_name, poval.products_options_values_name, pa.options_values_price, pa.price_prefix, pad.products_attributes_maxdays, pad.products_attributes_maxcount , pad.products_attributes_filename
                                       from " . TABLE_PRODUCTS_OPTIONS . " popt, " . TABLE_PRODUCTS_OPTIONS_VALUES . " poval, " . TABLE_PRODUCTS_ATTRIBUTES . " pa
                                       left join " . TABLE_PRODUCTS_ATTRIBUTES_DOWNLOAD . " pad
                                       on pa.products_attributes_id=pad.products_attributes_id
                                       where pa.products_id = '" . $order->products[$i]['id'] . "'
                                       and pa.options_id = '" . $order->products[$i]['attributes'][$j]['option_id'] . "'
                                       and pa.options_id = popt.products_options_id
                                       and pa.options_values_id = '" . $order->products[$i]['attributes'][$j]['value_id'] . "'
                                       and pa.options_values_id = poval.products_options_values_id
                                       and popt.language_id = '" . $languages_id . "'
                                       and poval.language_id = '" . $languages_id . "'";
                  $attributes = tep_db_query($attributes_query);
                } else {
                  $attributes = tep_db_query("select popt.products_options_name, poval.products_options_values_name, pa.options_values_price, pa.price_prefix from " . TABLE_PRODUCTS_OPTIONS . " popt, " . TABLE_PRODUCTS_OPTIONS_VALUES . " poval, " . TABLE_PRODUCTS_ATTRIBUTES . " pa where pa.products_id = '" . $order->products[$i]['id'] . "' and pa.options_id = '" . $order->products[$i]['attributes'][$j]['option_id'] . "' and pa.options_id = popt.products_options_id and pa.options_values_id = '" . $order->products[$i]['attributes'][$j]['value_id'] . "' and pa.options_values_id = poval.products_options_values_id and popt.language_id = '" . $languages_id . "' and poval.language_id = '" . $languages_id . "'");
                }
                $attributes_values = tep_db_fetch_array($attributes);

                $sql_data_array = array('orders_id' => $insert_id,
                                        'orders_products_id' => $order_products_id,
                                        'products_options' => $attributes_values['products_options_name'],
                                        'products_options_values' => $attributes_values['products_options_values_name'],
                                        'options_values_price' => $attributes_values['options_values_price'],
                                        'price_prefix' => $attributes_values['price_prefix']);

                tep_db_perform(TABLE_ORDERS_PRODUCTS_ATTRIBUTES, $sql_data_array);

                if ((DOWNLOAD_ENABLED == 'true') && isset($attributes_values['products_attributes_filename']) && tep_not_null($attributes_values['products_attributes_filename'])) {
// BOF Super Download Shop v1.0 mod
                  if (DOWNLOADS_CONTROLLER_FILEGROUP_STATUS != 'Yes' || !strstr($attributes_values['products_attributes_filename'], 'Group_Files-')) {
                    $sql_data_array = array('orders_id' => $insert_id,
                                            'orders_products_id' => $order_products_id,
                                            'orders_products_filename' => $attributes_values['products_attributes_filename'],
                                            'download_maxdays' => $attributes_values['products_attributes_maxdays'],
                                            'download_count' => $attributes_values['products_attributes_maxcount']);
                    tep_db_perform(TABLE_ORDERS_PRODUCTS_DOWNLOAD, $sql_data_array);
                  } else {
                    $filegroup_array = explode('Group_Files-', $attributes_values['products_attributes_filename']);
                    $filegroup_id = $filegroup_array[1];
                    $groupfiles_query = tep_db_query("select download_group_filename
                                                      from " . TABLE_PRODUCTS_ATTRIBUTES_DOWNLOAD_GROUPS_FILES . "
                                                      where download_group_id = '" . (int)$filegroup_id . "'");
                    while ($groupfile_array = tep_db_fetch_array($groupfiles_query)) {
                      $sql_data_array = array('orders_id' => $insert_id,
                                              'orders_products_id' => $order_products_id,
                                              'orders_products_filename' => $groupfile_array['download_group_filename'],
                                              'download_maxdays' => $attributes_values['products_attributes_maxdays'],
                                              'download_count' => $attributes_values['products_attributes_maxcount']);
                      tep_db_perform(TABLE_ORDERS_PRODUCTS_DOWNLOAD, $sql_data_array);
                    }
                  }
// EOF Super Download Shop v1.0 mod
                }
              }
            }
          }

          $cart_PayPal_IPN_ID = $cartID . '-' . $insert_id;
          tep_session_register('cart_PayPal_IPN_ID');
        }
      }

      return false;
    }

    function process_button() {
      global $customer_id, $order, $languages_id, $currencies, $currency, $cart_PayPal_IPN_ID, $shipping;

      $process_button_string = '';
      $parameters = array();

      if ( (MODULE_PAYMENT_PAYPAL_IPN_TRANSACTION_TYPE == 'Per Item') && (MODULE_PAYMENT_PAYPAL_IPN_EWP_STATUS == 'False') ) {
        $parameters['cmd'] = '_cart';
        $parameters['upload'] = '1';

        for ($i=0, $n=sizeof($order->products); $i<$n; $i++) {
          $item = $i+1;

          $tax_value = ($order->products[$i]['tax'] / 100) * $order->products[$i]['final_price'];

          $parameters['item_name_' . $item] = $order->products[$i]['name'];
          $parameters['amount_' . $item] = number_format($order->products[$i]['final_price'], $currencies->get_decimal_places($currency));
          $parameters['tax_' . $item] = number_format($tax_value, $currencies->get_decimal_places($currency));
          $parameters['quantity_' . $item] = $order->products[$i]['qty'];

          if ($i == 0) {
            if (DISPLAY_PRICE_WITH_TAX == 'true') {
              $shipping_cost = $order->info['shipping_cost'];
            } else {
              $module = substr($shipping['id'], 0, strpos($shipping['id'], '_'));
              $shipping_tax = tep_get_tax_rate($GLOBALS[$module]->tax_class, $order->delivery['country']['id'], $order->delivery['zone_id']);
              $shipping_cost = $order->info['shipping_cost'] + tep_calculate_tax($order->info['shipping_cost'], $shipping_tax);
            }

            $parameters['shipping_' . $item] = number_format($shipping_cost, $currencies->get_decimal_places($currency));
          }

          if (isset($order->products[$i]['attributes'])) {
            for ($j=0, $n2=sizeof($order->products[$i]['attributes']); $j<$n2; $j++) {
              if (DOWNLOAD_ENABLED == 'true') {
                $attributes_query = "select popt.products_options_name, poval.products_options_values_name, pa.options_values_price, pa.price_prefix, pad.products_attributes_maxdays, pad.products_attributes_maxcount , pad.products_attributes_filename
                                     from " . TABLE_PRODUCTS_OPTIONS . " popt, " . TABLE_PRODUCTS_OPTIONS_VALUES . " poval, " . TABLE_PRODUCTS_ATTRIBUTES . " pa
                                     left join " . TABLE_PRODUCTS_ATTRIBUTES_DOWNLOAD . " pad
                                     on pa.products_attributes_id=pad.products_attributes_id
                                     where pa.products_id = '" . $order->products[$i]['id'] . "'
                                     and pa.options_id = '" . $order->products[$i]['attributes'][$j]['option_id'] . "'
                                     and pa.options_id = popt.products_options_id
                                     and pa.options_values_id = '" . $order->products[$i]['attributes'][$j]['value_id'] . "'
                                     and pa.options_values_id = poval.products_options_values_id
                                     and popt.language_id = '" . $languages_id . "'
                                     and poval.language_id = '" . $languages_id . "'";
                $attributes = tep_db_query($attributes_query);
              } else {
                $attributes = tep_db_query("select popt.products_options_name, poval.products_options_values_name, pa.options_values_price, pa.price_prefix from " . TABLE_PRODUCTS_OPTIONS . " popt, " . TABLE_PRODUCTS_OPTIONS_VALUES . " poval, " . TABLE_PRODUCTS_ATTRIBUTES . " pa where pa.products_id = '" . $order->products[$i]['id'] . "' and pa.options_id = '" . $order->products[$i]['attributes'][$j]['option_id'] . "' and pa.options_id = popt.products_options_id and pa.options_values_id = '" . $order->products[$i]['attributes'][$j]['value_id'] . "' and pa.options_values_id = poval.products_options_values_id and popt.language_id = '" . $languages_id . "' and poval.language_id = '" . $languages_id . "'");
              }
              $attributes_values = tep_db_fetch_array($attributes);

// Unfortunately PayPal only accepts two attributes per product, so the
// third attribute onwards will not be shown at PayPal
              $parameters['on' . $j . '_' . $item] = $attributes_values['products_options_name'];
              $parameters['os' . $j . '_' . $item] = $attributes_values['products_options_values_name'];
            }
          }
        }

        $parameters['num_cart_items'] = $item;
      } else {
        $parameters['cmd'] = '_xclick';
        $parameters['item_name'] = STORE_NAME;
        $parameters['shipping'] = number_format($order->info['shipping_cost'], $currencies->get_decimal_places($currency));
        $parameters['tax'] = number_format($order->info['tax'], $currencies->get_decimal_places($currency));
      }

      $parameters['business'] = MODULE_PAYMENT_PAYPAL_IPN_ID;
      $parameters['amount'] = number_format($order->info['total'] - $order->info['shipping_cost'] - $order->info['tax'], $currencies->get_decimal_places($currency));
      $parameters['currency_code'] = $currency;
      $parameters['invoice'] = substr($cart_PayPal_IPN_ID, strpos($cart_PayPal_IPN_ID, '-')+1);
      $parameters['custom'] = $customer_id;
      $parameters['no_shipping'] = '1';
      $parameters['no_note'] = '1';
      $parameters['notify_url'] = tep_href_link('ext/modules/payment/paypal/ipn.php', '', 'SSL', false, false);
      $parameters['return'] = tep_href_link(FILENAME_CHECKOUT_PROCESS, '', 'SSL');
      $parameters['cancel_return'] = tep_href_link(FILENAME_CHECKOUT_PAYMENT, '', 'SSL');
      $parameters['bn'] = 'osCommerce; ' . PROJECT_VERSION;

      if (tep_not_null(MODULE_PAYMENT_PAYPAL_IPN_PAGE_STYLE)) {
        $parameters['page_style'] = MODULE_PAYMENT_PAYPAL_IPN_PAGE_STYLE;
      }

      if (MODULE_PAYMENT_PAYPAL_IPN_EWP_STATUS == 'True') {
        $parameters['cert_id'] = MODULE_PAYMENT_PAYPAL_IPN_EWP_CERT_ID;

        $random_string = rand(100000, 999999) . '-' . $customer_id . '-';

        $data = '';
        reset($parameters);
        while (list($key, $value) = each($parameters)) {
          $data .= $key . '=' . $value . "\n";
        }

        $fp = fopen(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'data.txt', 'w');
        fwrite($fp, $data);
        fclose($fp);

        unset($data);

        if (function_exists('openssl_pkcs7_sign') && function_exists('openssl_pkcs7_encrypt')) {
          openssl_pkcs7_sign(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'data.txt', MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'signed.txt', file_get_contents(MODULE_PAYMENT_PAYPAL_IPN_EWP_PUBLIC_KEY), file_get_contents(MODULE_PAYMENT_PAYPAL_IPN_EWP_PRIVATE_KEY), array('From' => MODULE_PAYMENT_PAYPAL_IPN_ID), PKCS7_BINARY);

          unlink(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'data.txt');

// remove headers from the signature
          $signed = file_get_contents(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'signed.txt');
          $signed = explode("\n\n", $signed);
          $signed = base64_decode($signed[1]);

          $fp = fopen(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'signed.txt', 'w');
          fwrite($fp, $signed);
          fclose($fp);

          unset($signed);

          openssl_pkcs7_encrypt(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'signed.txt', MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'encrypted.txt', file_get_contents(MODULE_PAYMENT_PAYPAL_IPN_EWP_PAYPAL_KEY), array('From' => MODULE_PAYMENT_PAYPAL_IPN_ID), PKCS7_BINARY);

          unlink(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'signed.txt');

// remove headers from the encrypted result
          $data = file_get_contents(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'encrypted.txt');
          $data = explode("\n\n", $data);
          $data = '-----BEGIN PKCS7-----' . "\n" . $data[1] . "\n" . '-----END PKCS7-----';

          unlink(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'encrypted.txt');
        } else {
          exec(MODULE_PAYMENT_PAYPAL_IPN_EWP_OPENSSL . ' smime -sign -in ' . MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'data.txt -signer ' . MODULE_PAYMENT_PAYPAL_IPN_EWP_PUBLIC_KEY . ' -inkey ' . MODULE_PAYMENT_PAYPAL_IPN_EWP_PRIVATE_KEY . ' -outform der -nodetach -binary > ' . MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'signed.txt');
          unlink(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'data.txt');

          exec(MODULE_PAYMENT_PAYPAL_IPN_EWP_OPENSSL . ' smime -encrypt -des3 -binary -outform pem ' . MODULE_PAYMENT_PAYPAL_IPN_EWP_PAYPAL_KEY . ' < ' . MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'signed.txt > ' . MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'encrypted.txt');
          unlink(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'signed.txt');

          $fh = fopen(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'encrypted.txt', 'rb');
          $data = fread($fh, filesize(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'encrypted.txt'));
          fclose($fh);

          unlink(MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY . '/' . $random_string . 'encrypted.txt');
        }

        $process_button_string = tep_draw_hidden_field('cmd', '_s-xclick') .
                                 tep_draw_hidden_field('encrypted', $data);

        unset($data);
      } else {
        reset($parameters);
        while (list($key, $value) = each($parameters)) {
          $process_button_string .= tep_draw_hidden_field($key, $value);
        }
      }

      return $process_button_string;
    }

    function before_process() {
      global $customer_id, $order, $order_totals, $sendto, $billto, $payment, $currencies, $cart, $cart_PayPal_IPN_ID;
      global $$payment;

      $order_id = substr($cart_PayPal_IPN_ID, strpos($cart_PayPal_IPN_ID, '-')+1);

      $check_query = tep_db_query("select orders_status from " . TABLE_ORDERS . " where orders_id = '" . (int)$order_id . "'");
      if (tep_db_num_rows($check_query)) {
        $check = tep_db_fetch_array($check_query);

        if ($check['orders_status'] == MODULE_PAYMENT_PAYPAL_IPN_PREPARE_ORDER_STATUS_ID) {
          $sql_data_array = array('orders_id' => $order_id,
                                  'orders_status_id' => MODULE_PAYMENT_PAYPAL_IPN_PREPARE_ORDER_STATUS_ID,
                                  'date_added' => 'now()',
                                  'customer_notified' => '0',
                                  'comments' => '');

          tep_db_perform(TABLE_ORDERS_STATUS_HISTORY, $sql_data_array);
        }
      }

      tep_db_query("update " . TABLE_ORDERS . " set orders_status = '" . (MODULE_PAYMENT_PAYPAL_IPN_ORDER_STATUS_ID > 0 ? (int)MODULE_PAYMENT_PAYPAL_IPN_ORDER_STATUS_ID : (int)DEFAULT_ORDERS_STATUS_ID) . "', last_modified = now() where orders_id = '" . (int)$order_id . "'");

      $sql_data_array = array('orders_id' => $order_id,
                              'orders_status_id' => (MODULE_PAYMENT_PAYPAL_IPN_ORDER_STATUS_ID > 0 ? (int)MODULE_PAYMENT_PAYPAL_IPN_ORDER_STATUS_ID : (int)DEFAULT_ORDERS_STATUS_ID),
                              'date_added' => 'now()',
                              'customer_notified' => (SEND_EMAILS == 'true') ? '1' : '0',
                              'comments' => $order->info['comments']);

      tep_db_perform(TABLE_ORDERS_STATUS_HISTORY, $sql_data_array);

// initialized for the email confirmation
      $products_ordered = '';
      $subtotal = 0;
      $total_tax = 0;

      for ($i=0, $n=sizeof($order->products); $i<$n; $i++) {
// Stock Update - Joao Correia
        if (STOCK_LIMITED == 'true') {
          if (DOWNLOAD_ENABLED == 'true') {
            $stock_query_raw = "SELECT products_quantity, pad.products_attributes_filename
                                FROM " . TABLE_PRODUCTS . " p
                                LEFT JOIN " . TABLE_PRODUCTS_ATTRIBUTES . " pa
                                ON p.products_id=pa.products_id
                                LEFT JOIN " . TABLE_PRODUCTS_ATTRIBUTES_DOWNLOAD . " pad
                                ON pa.products_attributes_id=pad.products_attributes_id
                                WHERE p.products_id = '" . tep_get_prid($order->products[$i]['id']) . "'";
// Will work with only one option for downloadable products
// otherwise, we have to build the query dynamically with a loop
            $products_attributes = $order->products[$i]['attributes'];
            if (is_array($products_attributes)) {
              $stock_query_raw .= " AND pa.options_id = '" . $products_attributes[0]['option_id'] . "' AND pa.options_values_id = '" . $products_attributes[0]['value_id'] . "'";
            }
            $stock_query = tep_db_query($stock_query_raw);
          } else {
            $stock_query = tep_db_query("select products_quantity from " . TABLE_PRODUCTS . " where products_id = '" . tep_get_prid($order->products[$i]['id']) . "'");
          }
          if (tep_db_num_rows($stock_query) > 0) {
            $stock_values = tep_db_fetch_array($stock_query);
// do not decrement quantities if products_attributes_filename exists
            if ((DOWNLOAD_ENABLED != 'true') || (!$stock_values['products_attributes_filename'])) {
              $stock_left = $stock_values['products_quantity'] - $order->products[$i]['qty'];
            } else {
              $stock_left = $stock_values['products_quantity'];
            }
            tep_db_query("update " . TABLE_PRODUCTS . " set products_quantity = '" . $stock_left . "' where products_id = '" . tep_get_prid($order->products[$i]['id']) . "'");
            if ( ($stock_left < 1) && (STOCK_ALLOW_CHECKOUT == 'false') ) {
              tep_db_query("update " . TABLE_PRODUCTS . " set products_status = '0' where products_id = '" . tep_get_prid($order->products[$i]['id']) . "'");
            }
          }
        }

// Update products_ordered (for bestsellers list)
        tep_db_query("update " . TABLE_PRODUCTS . " set products_ordered = products_ordered + " . sprintf('%d', $order->products[$i]['qty']) . " where products_id = '" . tep_get_prid($order->products[$i]['id']) . "'");

//------insert customer choosen option to order--------
        $attributes_exist = '0';
        $products_ordered_attributes = '';
        if (isset($order->products[$i]['attributes'])) {
          $attributes_exist = '1';
          for ($j=0, $n2=sizeof($order->products[$i]['attributes']); $j<$n2; $j++) {
            if (DOWNLOAD_ENABLED == 'true') {
              $attributes_query = "select popt.products_options_name, poval.products_options_values_name, pa.options_values_price, pa.price_prefix, pad.products_attributes_maxdays, pad.products_attributes_maxcount , pad.products_attributes_filename
                                   from " . TABLE_PRODUCTS_OPTIONS . " popt, " . TABLE_PRODUCTS_OPTIONS_VALUES . " poval, " . TABLE_PRODUCTS_ATTRIBUTES . " pa
                                   left join " . TABLE_PRODUCTS_ATTRIBUTES_DOWNLOAD . " pad
                                   on pa.products_attributes_id=pad.products_attributes_id
                                   where pa.products_id = '" . $order->products[$i]['id'] . "'
                                   and pa.options_id = '" . $order->products[$i]['attributes'][$j]['option_id'] . "'
                                   and pa.options_id = popt.products_options_id
                                   and pa.options_values_id = '" . $order->products[$i]['attributes'][$j]['value_id'] . "'
                                   and pa.options_values_id = poval.products_options_values_id
                                   and popt.language_id = '" . $languages_id . "'
                                   and poval.language_id = '" . $languages_id . "'";
              $attributes = tep_db_query($attributes_query);
            } else {
              $attributes = tep_db_query("select popt.products_options_name, poval.products_options_values_name, pa.options_values_price, pa.price_prefix from " . TABLE_PRODUCTS_OPTIONS . " popt, " . TABLE_PRODUCTS_OPTIONS_VALUES . " poval, " . TABLE_PRODUCTS_ATTRIBUTES . " pa where pa.products_id = '" . $order->products[$i]['id'] . "' and pa.options_id = '" . $order->products[$i]['attributes'][$j]['option_id'] . "' and pa.options_id = popt.products_options_id and pa.options_values_id = '" . $order->products[$i]['attributes'][$j]['value_id'] . "' and pa.options_values_id = poval.products_options_values_id and popt.language_id = '" . $languages_id . "' and poval.language_id = '" . $languages_id . "'");
            }
            $attributes_values = tep_db_fetch_array($attributes);

            $products_ordered_attributes .= "\n\t" . $attributes_values['products_options_name'] . ' ' . $attributes_values['products_options_values_name'];
          }
        }
//------insert customer choosen option eof ----
        $total_weight += ($order->products[$i]['qty'] * $order->products[$i]['weight']);
        $total_tax += tep_calculate_tax($total_products_price, $products_tax) * $order->products[$i]['qty'];
        $total_cost += $total_products_price;

        $products_ordered .= $order->products[$i]['qty'] . ' x ' . $order->products[$i]['name'] . ' (' . $order->products[$i]['model'] . ') = ' . $currencies->display_price($order->products[$i]['final_price'], $order->products[$i]['tax'], $order->products[$i]['qty']) . $products_ordered_attributes . "\n";
      }

// lets start with the email confirmation
      $email_order = STORE_NAME . "\n" .
                     EMAIL_SEPARATOR . "\n" .
                     EMAIL_TEXT_ORDER_NUMBER . ' ' . $order_id . "\n" .
                     EMAIL_TEXT_INVOICE_URL . ' ' . tep_href_link(FILENAME_ACCOUNT_HISTORY_INFO, 'order_id=' . $order_id, 'SSL', false) . "\n" .
                     EMAIL_TEXT_DATE_ORDERED . ' ' . strftime(DATE_FORMAT_LONG) . "\n\n";
      if ($order->info['comments']) {
        $email_order .= tep_db_output($order->info['comments']) . "\n\n";
      }
      $email_order .= EMAIL_TEXT_PRODUCTS . "\n" .
                      EMAIL_SEPARATOR . "\n" .
                      $products_ordered .
                      EMAIL_SEPARATOR . "\n";

      for ($i=0, $n=sizeof($order_totals); $i<$n; $i++) {
        $email_order .= strip_tags($order_totals[$i]['title']) . ' ' . strip_tags($order_totals[$i]['text']) . "\n";
      }

      if ($order->content_type != 'virtual') {
        $email_order .= "\n" . EMAIL_TEXT_DELIVERY_ADDRESS . "\n" .
                        EMAIL_SEPARATOR . "\n" .
                        tep_address_label($customer_id, $sendto, 0, '', "\n") . "\n";
      }

      $email_order .= "\n" . EMAIL_TEXT_BILLING_ADDRESS . "\n" .
                      EMAIL_SEPARATOR . "\n" .
                      tep_address_label($customer_id, $billto, 0, '', "\n") . "\n\n";

      if (is_object($$payment)) {
        $email_order .= EMAIL_TEXT_PAYMENT_METHOD . "\n" .
                        EMAIL_SEPARATOR . "\n";
        $payment_class = $$payment;
        $email_order .= $payment_class->title . "\n\n";
        if ($payment_class->email_footer) {
          $email_order .= $payment_class->email_footer . "\n\n";
        }
      }

      tep_mail($order->customer['firstname'] . ' ' . $order->customer['lastname'], $order->customer['email_address'], EMAIL_TEXT_SUBJECT, $email_order, STORE_OWNER, STORE_OWNER_EMAIL_ADDRESS);

// send emails to other people
      if (SEND_EXTRA_ORDER_EMAILS_TO != '') {
        tep_mail('', SEND_EXTRA_ORDER_EMAILS_TO, EMAIL_TEXT_SUBJECT, $email_order, STORE_OWNER, STORE_OWNER_EMAIL_ADDRESS);
      }

// load the after_process function from the payment modules
      $this->after_process();

      $cart->reset(true);

// unregister session variables used during checkout
      tep_session_unregister('sendto');
      tep_session_unregister('billto');
      tep_session_unregister('shipping');
      tep_session_unregister('payment');
      tep_session_unregister('comments');

      tep_session_unregister('cart_PayPal_IPN_ID');

      tep_redirect(tep_href_link(FILENAME_CHECKOUT_SUCCESS, '', 'SSL'));
    }

    function after_process() {
      return false;
    }

    function output_error() {
      return false;
    }

    function check() {
      if (!isset($this->_check)) {
        $check_query = tep_db_query("select configuration_value from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_PAYMENT_PAYPAL_IPN_STATUS'");
        $this->_check = tep_db_num_rows($check_query);
      }
      return $this->_check;
    }

    function install() {
      $check_query = tep_db_query("select orders_status_id from " . TABLE_ORDERS_STATUS . " where orders_status_name = 'Preparing [PayPal IPN]' limit 1");

      if (tep_db_num_rows($check_query) < 1) {
        $status_query = tep_db_query("select max(orders_status_id) as status_id from " . TABLE_ORDERS_STATUS);
        $status = tep_db_fetch_array($status_query);

        $status_id = $status['status_id']+1;

        $languages = tep_get_languages();

        foreach ($languages as $lang) {
          tep_db_query("insert into " . TABLE_ORDERS_STATUS . " (orders_status_id, language_id, orders_status_name) values ('" . $status_id . "', '" . $lang['id'] . "', 'Preparing [PayPal IPN]')");
        }
      } else {
        $check = tep_db_fetch_array($check_query);

        $status_id = $check['orders_status_id'];
      }

      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) values ('Enable PayPal IPN Module', 'MODULE_PAYMENT_PAYPAL_IPN_STATUS', 'True', 'Do you want to accept PayPal IPN payments?', '6', '3', 'tep_cfg_select_option(array(\'True\', \'False\'), ', now())");
      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('E-Mail Address', 'MODULE_PAYMENT_PAYPAL_IPN_ID', '', 'The e-mail address to use for the PayPal IPN service', '6', '4', now())");
      tep_db_query("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_PAYPAL_IPN_SORT_ORDER', '0', 'Sort order of display. Lowest is displayed first.', '6', '0', now())");
      tep_db_query("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_PAYPAL_IPN_ZONE', '0', 'If a zone is selected, only enable this payment method for that zone.', '6', '2', 'tep_get_zone_class_title', 'tep_cfg_pull_down_zone_classes(', now())");
      tep_db_query("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 Preparing Order Status', 'MODULE_PAYMENT_PAYPAL_IPN_PREPARE_ORDER_STATUS_ID', '" . $status_id . "', 'Set the status of prepared orders made with this payment module to this value', '6', '0', 'tep_cfg_pull_down_order_statuses(', 'tep_get_order_status_name', now())");
      tep_db_query("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 PayPal Acknowledged Order Status', 'MODULE_PAYMENT_PAYPAL_IPN_ORDER_STATUS_ID', '0', 'Set the status of orders made with this payment module to this value', '6', '0', 'tep_cfg_pull_down_order_statuses(', 'tep_get_order_status_name', now())");
      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) values ('Transaction Type', 'MODULE_PAYMENT_PAYPAL_IPN_TRANSACTION_TYPE', 'Per Item', 'Send individual items to PayPal or aggregate all as one total item?', '6', '6', 'tep_cfg_select_option(array(\'Per Item\',\'Aggregate\'), ', now())");
      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) values ('Gateway Server', 'MODULE_PAYMENT_PAYPAL_IPN_GATEWAY_SERVER', 'Live', 'Use the testing (sandbox) or live gateway server for transactions?', '6', '6', 'tep_cfg_select_option(array(\'Live\', \'Sandbox\'), ', now())");
      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Page Style', 'MODULE_PAYMENT_PAYPAL_IPN_PAGE_STYLE', '', 'The page style to use for the transaction procedure (defined at your PayPal Profile page)', '6', '4', now())");
      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Debug E-Mail Address', 'MODULE_PAYMENT_PAYPAL_IPN_DEBUG_EMAIL', '', 'All parameters of an Invalid IPN notification will be sent to this email address if one is entered.', '6', '4', now())");
      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) values ('Enable Encrypted Web Payments', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_STATUS', 'False', 'Do you want to enable Encrypted Web Payments?', '6', '3', 'tep_cfg_select_option(array(\'True\', \'False\'), ', now())");
      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Your Private Key', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_PRIVATE_KEY', '', 'The location of your Private Key to use for signing the data. (*.pem)', '6', '4', now())");
      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Your Public Certificate', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_PUBLIC_KEY', '', 'The location of your Public Certificate to use for signing the data. (*.pem)', '6', '4', now())");
      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('PayPals Public Certificate', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_PAYPAL_KEY', '', 'The location of the PayPal Public Certificate for encrypting the data.', '6', '4', now())");
      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Your PayPal Public Certificate ID', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_CERT_ID', '', 'The Certificate ID to use from your PayPal Encrypted Payment Settings Profile.', '6', '4', now())");
      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Working Directory', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY', '', 'The working directory to use for temporary files. (trailing slash needed)', '6', '4', now())");
      tep_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('OpenSSL Location', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_OPENSSL', '/usr/bin/openssl', 'The location of the openssl binary file.', '6', '4', now())");

    }

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

    function keys() {
      return array('MODULE_PAYMENT_PAYPAL_IPN_STATUS', 'MODULE_PAYMENT_PAYPAL_IPN_ID', 'MODULE_PAYMENT_PAYPAL_IPN_ZONE', 'MODULE_PAYMENT_PAYPAL_IPN_PREPARE_ORDER_STATUS_ID', 'MODULE_PAYMENT_PAYPAL_IPN_ORDER_STATUS_ID', 'MODULE_PAYMENT_PAYPAL_IPN_GATEWAY_SERVER', 'MODULE_PAYMENT_PAYPAL_IPN_TRANSACTION_TYPE', 'MODULE_PAYMENT_PAYPAL_IPN_PAGE_STYLE', 'MODULE_PAYMENT_PAYPAL_IPN_DEBUG_EMAIL', 'MODULE_PAYMENT_PAYPAL_IPN_SORT_ORDER', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_STATUS', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_PRIVATE_KEY', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_PUBLIC_KEY', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_PAYPAL_KEY', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_CERT_ID', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_WORKING_DIRECTORY', 'MODULE_PAYMENT_PAYPAL_IPN_EWP_OPENSSL');
    }
  }
?>