Ticket #520: Paypalpro.php

<?php defined('SYSPATH') or die('No direct script access.');

/**
 * Paypay (website payments pro) Payment Driver
 *
 *
 * @package    Payment
 * @author     Kohana Team
 * @copyright  (c) 2007-2008 Kohana Team
 * @license    http://kohanaphp.com/license.html
 */
class Payment_Paypalpro_Driver implements Payment_Driver
{
    // Fields required to do a transaction

    /**
    * these are the required fields for the API method DoDirectPayment
    * other API methods and the associated fields required are listed here: http://tinyurl.com/2cffgr
    *
    * *note - paypalpro API field names are not case sensitive
    */

    private $required_fields = array
    (

        'ENDPOINT'       => FALSE,
        'USER'           => FALSE,
        'PWD'            => FALSE,
        'SIGNATURE'      => FALSE,
        'VERSION'        => FALSE,

        'METHOD'         => FALSE,

        'PAYMENTACTION'  => FALSE,

        'CURRENCYCODE'   => FALSE, // default is USD - only required if other currency needed
        'AMT'            => FALSE, // payment amount

        'IPADDRESS'      => FALSE,

        'FIRSTNAME'      => FALSE,
        'LASTNAME'       => FALSE,

        'CREDITCARDTYPE' => FALSE,
        'ACCT'           => FALSE, // card number
        'EXPDATE'        => FALSE,
        'CVV2'           => FALSE

    );

    private $fields = array
    (

        'ENDPOINT'       => '',
        'USER'           => '',
        'PWD'            => '',
        'SIGNATURE'      => '',
        'VERSION'        => '',

        'METHOD'         => '',
        /* some possible values for METHOD :
           'DoDirectPayment',
           'RefundTransaction',
           'DoAuthorization',
           'DoReauthorization',
           'DoCapture',
           'DoVoid'
        */

        'PAYMENTACTION'  => '',

        'CURRENCYCODE'   => '',
        'AMT'            => 0,  // payment amount

        'IPADDRESS'      => '',

        'FIRSTNAME'      => '',
        'LASTNAME'       => '',

        'CREDITCARDTYPE' => '',
        'ACCT'           => '', // card number
        'EXPDATE'        => '', // Format: MMYYYY
        'CVV2'           => '', // security code

        // -- OPTIONAL FIELDS --

        'STREET'         => '',
        'STREET2'        => '',
        'CITY'           => '',
        'STATE'          => '',
        'ZIP'            => '',
        'COUNTRYCODE'    => '',

        'SHIPTONAME'        => '',
        'SHIPTOSTREET'      => '',
        'SHIPTOSTREET2'     => '',
        'SHIPTOCITY'        => '',
        'SHIPTOSTATE'       => '',
        'SHIPTOZIP'         => '',
        'SHIPTOCOUNTRYCODE' => '',

        'INVNUM'         => '' // your internal order id / transaction id

        // other optional fields listed here:
        // https://www.paypal.com/en_US/ebook/PP_NVPAPI_DeveloperGuide/Appx_fieldreference.html#2145100
    );

    private $test_mode = TRUE;

    /**
     * Sets the config for the class.
     *
     * @param : array  - config passed from the payment library constructor
     */

    public function __construct($config)
    {
        $this->test_mode = $config['test_mode'];

        if($this->test_mode)
        {
            $this->fields['USER']         = $config['SANDBOX_USER'];
            $this->fields['PWD']          = $config['SANDBOX_PWD'];
            $this->fields['SIGNATURE']    = $config['SANDBOX_SIGNATURE'];
            $this->fields['ENDPOINT']     = $config['SANDBOX_ENDPOINT'];
        }
        else
        {
            $this->fields['USER']         = $config['USER'];
            $this->fields['PWD']          = $config['PWD'];
            $this->fields['SIGNATURE']    = $config['SIGNATURE'];
            $this->fields['ENDPOINT']     = $config['ENDPOINT'];
        }

        $this->fields['VERSION']      = $config['VERSION'];
        $this->fields['CURRENCYCODE'] = $config['CURRENCYCODE'];

        $this->required_fields['USER']         = !empty($config['USER']);
        $this->required_fields['PWD']          = !empty($config['PWD']);
        $this->required_fields['SIGNATURE']    = !empty($config['SIGNATURE']);
        $this->required_fields['ENDPOINT']     = !empty($config['ENDPOINT']);
        $this->required_fields['VERSION']      = !empty($config['VERSION']);
        $this->required_fields['CURRENCYCODE'] = !empty($config['CURRENCYCODE']);

        $this->curl_config = $config['curl_config'];

        Log::add('debug', 'Paypalpro Payment Driver Initialized');
    }

    /**
    *@desc set fields for nvp string
    */

    public function set_fields($fields)
    {
        foreach ((array) $fields as $key => $value)
        {
            $this->fields[$key] = $value;

            if (array_key_exists($key, $this->required_fields) and !empty($value))
            {
                $this->required_fields[$key] = TRUE;
            }

        }
    }

    /**
    *@desc process PayPal Website Payments Pro transaction
    */

    public function process()
    {
        // Check for required fields
        if (in_array(FALSE, $this->required_fields))
        {
            $fields = array();

            foreach ($this->required_fields as $key => $field)
            {
                if (!$field) $fields[] = $key;
            }

            throw new Kohana_Exception('payment.required', implode(', ', $fields));
        }


        // Instantiate curl and pass the API post url
        $ch = curl_init($this->fields['ENDPOINT']);

        foreach($this->fields as $key => $val)
        {
            // don't include unset optional fields in the name-value pair request string
            if($val==='' OR $key=='ENDPOINT') unset($this->fields[$key]);
        }


        $nvp_qstr = http_build_query($this->fields);

        // Set custom curl options
        curl_setopt_array($ch, $this->curl_config);

        // Set the curl POST fields
        curl_setopt($ch, CURLOPT_POSTFIELDS, $nvp_qstr);

        // Execute post and get results
        $response = curl_exec($ch);

        if (curl_errno($ch))
        {
            $curl_error_no  = curl_errno($ch);
            $curl_error_msg = curl_error($ch);
            throw new Kohana_Exception('curl.error:'.$curl_error_no.' - '.$curl_error_msg);
        }

        curl_close ($ch);

        if (!$response)
            throw new Kohana_Exception('payment.gateway_connection_error');


        $nvp_res_array = array();

        parse_str(urldecode($response),$nvp_res_array);

        return ($nvp_res_array['ACK'] == TRUE);

    }
} // End Payment_Paypalpro_Driver Class