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<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
* PayPal Library for CodeIgniter 3.x
*
* Library for PayPal payment gateway. It helps to integrate PayPal payment gateway
* in the CodeIgniter application.
*
* It requires PayPal configuration file and it should be placed in the config directory.
*
* @package CodeIgniter
* @category Libraries
* @author CodexWorld
* @license http://www.codexworld.com/license/
* @link http://www.codexworld.com
* @version 2.0
*/
#[\AllowDynamicProperties]
class Paypal_lib
{
var $last_error;
var $ipn_log;
var $ipn_log_file;
var $ipn_response;
var $ipn_data = array();
var $fields = array();
var $submit_btn = '';
var $button_path = '';
var $CI;
function __construct()
{
$this->CI = &get_instance();
$this->CI->load->helper('url');
$this->CI->load->helper('form');
$payment_settings = get_settings('payment_method', true);
$this->system_settings = get_settings('system_settings', true);
$mode = $payment_settings['paypal_mode'];
$this->paypal_url = ($mode == 'sandbox') ? 'https://www.sandbox.paypal.com/cgi-bin/webscr' : 'https://www.paypal.com/cgi-bin/webscr';
$this->last_error = '';
$this->ipn_response = '';
$this->ipn_log_file = BASEPATH . 'logs/paypal_ipn.log';;
$this->ipn_log = TRUE;
// populate $fields array with a few default values.
$businessEmail = $payment_settings['paypal_business_email'];
$this->add_field('business', $businessEmail);
$this->add_field('rm', '2');
$this->add_field('cmd', '_xclick');
$this->add_field('currency_code', $payment_settings['currency_code']);
$this->add_field('quantity', '1');
$this->button('Pay Now!');
}
function button($value)
{
// changes the default caption of the submit button
$this->submit_btn = form_submit('pp_submit', $value, 'class="btn btn-success"');
}
function image($file)
{
$this->submit_btn = '<input type="image" name="add" src="' . base_url(rtrim($this->button_path, '/') . '/' . $file) . '" border="0" />';
}
function add_field($field, $value)
{
// adds a key=>value pair to the fields array
$this->fields[$field] = $value;
}
function paypal_auto_form()
{
// form with hidden elements which is submitted to paypal
$this->button('Click here if you\'re not automatically redirected...');
echo '<html>' . "\n";
echo '<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>Processing Payment.. Please wait.. |' . $this->system_settings['app_name'] . '</title>
<link href="' . base_url('assets/img/favicon.png') . '" rel="shortcut icon" type="image/ico" />
<link href="' . base_url('assets/admin/css/adminlte.min.css') . '" rel="stylesheet" type="text/css" />
</head>' . "\n";
echo '<body style="text-align:center; font-size:2em;" onLoad="document.forms[\'paypal_auto_form\'].submit();">' . "\n";
echo '<p style="text-align:center;">Please wait, your order is being processed and you will be redirected to the paypal website.</p>' . "\n";
echo $this->paypal_form('paypal_auto_form');
echo '</body></html>';
}
function paypal_form($form_name = 'paypal_form')
{
$str = '';
$str .= '<form method="post" action="' . $this->paypal_url . '" name="' . $form_name . '"/>' . "\n";
$str .= '<input type="hidden" name="payer_email" value="testing@infinitietech.com" />';
foreach ($this->fields as $name => $value)
$str .= form_hidden($name, $value) . "\n";
$str .= '<p><img src="' . base_url('assets/old-pre-loader.gif') . '" alt="Please wait.. Loading" title="Please wait.. Loading.." width="140px" /></p>';
$str .= '<p>' . $this->submit_btn . '</p>';
$str .= form_close() . "\n";
return $str;
}
function validate_ipn($paypalReturn)
{
$ipn_response = $this->curlPost($this->paypal_url, $paypalReturn);
if (preg_match("/VERIFIED/i", $ipn_response)) {
// Valid IPN transaction.
return true;
} else {
// Invalid IPN transaction. Check the log for details.
$this->last_error = 'IPN Validation Failed.';
$this->log_ipn_results(false);
return false;
}
}
function log_ipn_results($success)
{
if (!$this->ipn_log) return; // is logging turned off?
// Timestamp
$text = '[' . date('m/d/Y g:i A') . '] - ';
// Success or failure being logged?
if ($success) $text .= "SUCCESS!\n";
else $text .= 'FAIL: ' . $this->last_error . "\n";
// Log the POST variables
$text .= "IPN POST Vars from Paypal:\n";
foreach ($this->ipn_data as $key => $value)
$text .= "$key=$value, ";
// Log the response from the paypal server
$text .= "\nIPN Response from Paypal Server:\n " . $this->ipn_response;
// Write to log
$fp = fopen($this->ipn_log_file, 'a');
fwrite($fp, $text . "\n\n");
fclose($fp); // close file
}
function dump()
{
// Used for debugging, this function will output all the field/value pairs
ksort($this->fields);
echo '<h2>ppal->dump() Output:</h2>' . "\n";
echo '<code style="font: 12px Monaco, \'Courier New\', Verdana, Sans-serif; background: #f9f9f9; border: 1px solid #D0D0D0; color: #002166; display: block; margin: 14px 0; padding: 12px 10px;">' . "\n";
foreach ($this->fields as $key => $value) echo '<strong>' . $key . '</strong>: ' . urldecode($value) . '<br/>';
echo "</code>\n";
}
function curlPost($paypal_url, $paypal_return_arr)
{
$req = 'cmd=_notify-validate';
foreach ($paypal_return_arr as $key => $value) {
$value = urlencode(stripslashes($value));
$req .= "&$key=$value";
}
$ipn_site_url = $paypal_url;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $ipn_site_url);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
$result = curl_exec($ch);
curl_close($ch);
return $result;
}
}