paypal.php

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<?php
/**
 * paypal.php payment module class for Paypal IPN payment method
 *
 * @package paymentMethod
 * @copyright Copyright 2003-2007 Zen Cart Development Team
 * @copyright Portions Copyright 2003 osCommerce
 * @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
 * @version $Id: paypal.php 7508 2007-11-28 17:05:16Z drbyte $
 */

define('MODULE_PAYMENT_PAYPAL_TAX_OVERRIDE', 'true');

// ensure dependencies are loaded
  include_once((IS_ADMIN_FLAG === true ? DIR_FS_CATALOG_MODULES : DIR_WS_MODULES) . 'payment/paypal/paypal_functions.php');
/**
 * paypal IPN payment method class
 *
 */
class paypal extends base {
  /**
   * string repesenting the payment method
   *
   * @var string
   */
  var $code;
  /**
   * $title is the displayed name for this payment method
   *
   * @var string
    */
  var $title;
  /**
   * $description is a soft name for this payment method
   *
   * @var string
    */
  var $description;
  /**
   * $enabled determines whether this module shows or not... in catalog.
   *
   * @var boolean
    */
  var $enabled;
  /**
    * constructor
    *
    * @param int $paypal_ipn_id
    * @return paypal
    */
  function paypal($paypal_ipn_id = '') {
    global $order, $messageStack;
    $this->code = 'paypal';
    $this->codeVersion = '1.3.8a';
    if (IS_ADMIN_FLAG === true) {
      $this->title = MODULE_PAYMENT_PAYPAL_TEXT_ADMIN_TITLE; // Payment Module title in Admin
      if (IS_ADMIN_FLAG === true && defined('MODULE_PAYMENT_PAYPAL_IPN_DEBUG') && MODULE_PAYMENT_PAYPAL_IPN_DEBUG != 'Off') $this->title .= '<span class="alert"> (debug mode active)</span>';
      if (IS_ADMIN_FLAG === true && MODULE_PAYMENT_PAYPAL_TESTING == 'Test') $this->title .= '<span class="alert"> (dev/test mode active)</span>';
    } else {
      $this->title = MODULE_PAYMENT_PAYPAL_TEXT_CATALOG_TITLE; // Payment Module title in Catalog
    }
    $this->description = MODULE_PAYMENT_PAYPAL_TEXT_DESCRIPTION;
    $this->sort_order = MODULE_PAYMENT_PAYPAL_SORT_ORDER;
    $this->enabled = ((MODULE_PAYMENT_PAYPAL_STATUS == 'True') ? true : false);
    if ((int)MODULE_PAYMENT_PAYPAL_ORDER_STATUS_ID > 0) {
      $this->order_status = MODULE_PAYMENT_PAYPAL_ORDER_STATUS_ID;
    }
    if (is_object($order)) $this->update_status();
    if (MODULE_PAYMENT_PAYPAL_TESTING == 'Test') {
      if (!file_exists(DIR_WS_CATALOG . 'ipn_test.php')) {
        $messageStack->add('header', 'WARNING: PayPal TEST mode enabled but ipn_test*.php files not found. Thus, module has been disabled in storefront.', 'caution');
        if (IS_ADMIN_FLAG === false) $this->enabled = false;
      }
      $this->form_action_url = DIR_WS_CATALOG . 'ipn_test.php';
    } else {
      $this->form_action_url = 'https://' . MODULE_PAYMENT_PAYPAL_HANDLER;
    }

    if (PROJECT_VERSION_MAJOR != '1' && substr(PROJECT_VERSION_MINOR, 0, 3) != '3.8') $this->enabled = false;

    // verify table structure
    if (IS_ADMIN_FLAG === true) $this->tableCheckup();
  }
  /**
   * calculate zone matches and flag settings to determine whether this module should display to customers or not
    *
    */
  function update_status() {
    global $order, $db;

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

      if ($check_flag == false) {
        $this->enabled = false;
      }
    }
  }
  /**
   * JS validation which does error-checking of data-entry if this module is selected for use
   * (Number, Owner, and CVV Lengths)
   *
   * @return string
    */
  function javascript_validation() {
    return false;
  }
  /**
   * Displays payment method name along with Credit Card Information Submission Fields (if any) on the Checkout Payment Page
   *
   * @return array
    */
  function selection() {
    return array('id' => $this->code,
                 'module' => MODULE_PAYMENT_PAYPAL_TEXT_CATALOG_LOGO,
                 'icon' => MODULE_PAYMENT_PAYPAL_TEXT_CATALOG_LOGO
                 );
  }
  /**
   * Normally evaluates the Credit Card Type for acceptance and the validity of the Credit Card Number & Expiration Date
   * Since paypal module is not collecting info, it simply skips this step.
   *
   * @return boolean
   */
  function pre_confirmation_check() {
    return false;
  }
  /**
   * Display Credit Card Information on the Checkout Confirmation Page
   * Since none is collected for paypal before forwarding to paypal site, this is skipped
   *
   * @return boolean
    */
  function confirmation() {
    return false;
  }
  /**
   * Build the data and actions to process when the "Submit" button is pressed on the order-confirmation screen.
   * This sends the data to the payment gateway for processing.
   * (These are hidden fields on the checkout confirmation page)
   *
   * @return string
    */
  function process_button() {
    global $db, $order, $currencies, $currency;
    $options = array();
    $optionsCore = array();
    $optionsPhone = array();
    $optionsShip = array();
    $optionsLineItems = array();
    $optionsAggregate = array();
    $optionsTrans = array();
    $buttonArray = array();

    $this->totalsum = $order->info['total'];

    // save the session stuff permanently in case paypal loses the session
    $_SESSION['ppipn_key_to_remove'] = session_id();
    $db->Execute("delete from " . TABLE_PAYPAL_SESSION . " where session_id = '" . zen_db_input($_SESSION['ppipn_key_to_remove']) . "'");

    $sql = "insert into " . TABLE_PAYPAL_SESSION . " (session_id, saved_session, expiry) values (
            '" . zen_db_input($_SESSION['ppipn_key_to_remove']) . "',
            '" . base64_encode(serialize($_SESSION)) . "',
            '" . (time() + (1*60*60*24*2)) . "')";

    $db->Execute($sql);

    $my_currency = select_pp_currency();
    $this->transaction_currency = $my_currency;

    $this->transaction_amount = ($this->totalsum * $currencies->get_value($my_currency));

    $telephone = preg_replace('/\D/', '', $order->customer['telephone']);
    if ($telephone != '') {
      $optionsPhone['H_PhoneNumber'] = $telephone;
      if (in_array($order->customer['country']['iso_code_2'], array('US','CA'))) {
        $optionsPhone['night_phone_a'] = substr($telephone,0,3);
        $optionsPhone['night_phone_b'] = substr($telephone,3,3);
        $optionsPhone['night_phone_c'] = substr($telephone,6,4);
        $optionsPhone['day_phone_a'] = substr($telephone,0,3);
        $optionsPhone['day_phone_b'] = substr($telephone,3,3);
        $optionsPhone['day_phone_c'] = substr($telephone,6,4);
    } else {
        $optionsPhone['night_phone_b'] = $telephone;
        $optionsPhone['day_phone_b'] = $telephone;
      }
    }

    $optionsCore = array(
                   'charset' => CHARSET,
                   'lc' => $order->customer['country']['iso_code_2'],
                   'page_style' => MODULE_PAYMENT_PAYPAL_PAGE_STYLE,
                   'custom' => zen_session_name() . '=' . zen_session_id(),
                   'business' => MODULE_PAYMENT_PAYPAL_BUSINESS_ID,
                   'return' => zen_href_link(FILENAME_CHECKOUT_PROCESS, 'referer=paypal', 'SSL'),
                   'cancel_return' => zen_href_link(FILENAME_CHECKOUT_PAYMENT, '', 'SSL'),
                   'shopping_url' => zen_href_link(FILENAME_SHOPPING_CART, '', 'SSL'),
                   'notify_url' => zen_href_link('ipn_main_handler.php', '', 'SSL',false,false,true),
                   'redirect_cmd' => '_xclick',
                   'rm' => 2,
                   'bn' => 'zencart',
                   'mrb' => '5QZAFW5F5CVV4',
                   'pal' => '5QZAFW5F5CVV4',
                   );
    $optionsCust = array(
                   'first_name' => replace_accents($order->customer['firstname']),
                   'last_name' => replace_accents($order->customer['lastname']),
                   'address1' => replace_accents($order->customer['street_address']),
                   'city' => replace_accents($order->customer['city']),
                   'state' => zen_get_zone_code($order->customer['country']['id'], $order->customer['zone_id'], $order->customer['zone_id']),
                   'zip' => $order->customer['postcode'],
                   'country' => $order->customer['country']['iso_code_2'],
                   'email' => $order->customer['email_address'],
                   );
    if ($order->customer['suburb'] != '') $optionsCust['address2'] = $order->customer['suburb'];
    if (MODULE_PAYMENT_PAYPAL_ADDRESS_REQUIRED == 2) $optionsCust = array(
                   'address_name' => replace_accents($order->customer['firstname'] . ' ' . $order->customer['lastname']),
                   'address_street' => replace_accents($order->customer['street_address']),
                   'address_city' => replace_accents($order->customer['city']),
                   'address_state' => zen_get_zone_code($order->customer['country']['id'], $order->customer['zone_id'], $order->customer['zone_id']),
                   'address_zip' => $order->customer['postcode'],