khosb/plugins/checkout/PAYPAL/PAYPAL.php

<?php
/**
 * osBilling - Open Billing Software
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Originally authored by Deon George
 *
 * @author Deon George <deonATleenooksDOTnet>
 * @copyright 2009 Deon George
 * @link http://osb.leenooks.net
 * @license http://www.gnu.org/licenses/
 * @package AgileBill
 * @subpackage Checkout:Paypal
 */

# When we are called back after a payment, we come directly here, and thus our config.inc hasnt been parsed.
if (defined('PATH_MODULES'))
	include_once(PATH_MODULES.'checkout/base_checkout_plugin.class.php');
else
	include_once('../../modules/checkout/base_checkout_plugin.class.php');

abstract class plg_chout_base_PAYPAL extends base_checkout_plugin {
	public function __construct($checkout_id=false,$multi=false) {
		$this->type = 'redirect';
		$this->return_url = sprintf('%splugins/checkout/%s.php',SSL_URL,$this->name);

		if ($multi) {
			$this->success_url = URL.'?_page=invoice:thankyou&_next_page=invoice:user_view&id=';
			$this->decline_url = URL.'?_page=invoice:checkout_multiple&id=';
		} else {
			$this->success_url = URL.'?_page=invoice:thankyou&_next_page=invoice:user_view&id=';
			$this->decline_url = URL.'?_page=invoice:user_view&id=';
		}

		$this->support_cur = array('AUD','USD','GBP','EUR','CAD','JPY');
		$this->getDetails($checkout_id);
	}

	protected function getLocation($uri=true,$nojs=false) {
		switch ($this->cfg['mode']) {
			case 1:
				return ($uri ? 'https://' : '').'www.paypal.com';
				break;
			case 0:
				if (! $nojs)
					echo '<script type="text/javascript">alert("This transaction is in TEST mode, payment will NOT be made.") </script>';
				return ($uri ? 'https://' : '').'www.sandbox.paypal.com';
				break;

			default:
				return false;
		}
	}

	# Validate the user submitted billing details at checkout:
	function validate($VAR) {
		return true;
	}

	# Perform a transaction for an (new invoice):
	function bill_invoice($VAR) {
		return true;
	}

	# Issue a refund for a paid invoice (captured charges w/gateway)
	function refund($VAR) {
		return true;
	}

	# Void a authorized charge (gateways only)
	function void($VAR) {
		return true;
	}

	# Stores new billing details, & return account_billing_id (gateway only)
	public function store_billing($VAR) {
		return null;
	}
}