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LiqPay.php
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LiqPay.php
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<?php
/**
* Liqpay Payment Module
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
*
* @category LiqPay
* @package delagics/liqpay
* @version 3.0
* @author Liqpay
* @copyright Copyright (c) 2014 Liqpay
* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
*
* EXTENSION INFORMATION
*
* LIQPAY API https://www.liqpay.ua/documentation/ru
*
*/
namespace qq20099\liqpay;
use yii\widgets\InputWidget;
use yii\helpers\Html;
use Yii;
/**
* Payment method liqpay process
*
* @author Liqpay <support@liqpay.com>
*/
class LiqPay extends InputWidget
{
const SUPPORT_VERSION = 3;
const DEFAULT_LANG = 'en';
private $_api_url = 'https://www.liqpay.ua/api/';
private $_checkout_url = 'https://www.liqpay.ua/api/3/checkout';
protected $_supportedCurrencies = ['EUR','UAH','USD','RUB'];
protected $_supportedLangs = ['en', 'ru'];
private $_public_key;
private $_private_key;
/**
* Constructor.
*
* @param string $public_key
* @param string $private_key
*
* @throws InvalidArgumentException
*/
public function __construct($public_key, $private_key)
{
if (empty($public_key))
throw new \InvalidArgumentException('LiqPay: Public key is empty');
if (empty($private_key))
throw new \InvalidArgumentException('LiqPay: Private key is empty');
$this->_public_key = $public_key;
$this->_private_key = $private_key;
}
/**
* Call API
*
* @param string $url
* @param array $params
*
* @return string
*/
public function api($path, $params = array())
{
if(!isset($params['version']))
throw new \InvalidArgumentException('LiqPay: Version is null');
$url = $this->_api_url . $path;
$public_key = $this->_public_key;
$private_key = $this->_private_key;
$data = base64_encode(json_encode(array_merge(compact('public_key'), $params)));
$signature = base64_encode(sha1($private_key.$data.$private_key, 1));
$postfields = http_build_query(array(
'data' => $data,
'signature' => $signature
));
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS,$postfields);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
$server_output = curl_exec($ch);
curl_close($ch);
return json_decode($server_output);
}
/**
* cnb_form
*
* @param array $params
*
* @return string
*
* @throws InvalidArgumentException
*/
public function cnb_form($params, $formId = '', $autosubmit = false, $liqpayBtnNum = 11)
{
if (isset($params['language']) && in_array($params['language'], $this->_supportedLangs))
$lang = $params['language'];
elseif(isset($params['language']) && !in_array($params['language'], $this->_supportedLangs))
throw new \InvalidArgumentException('LiqPay: Language is not supported');
else
$lang = $params['language'] = self::DEFAULT_LANG;
$params = $this->cnb_params($params);
$form =
Html::beginForm($this->_checkout_url, 'post', ['accept-charset' => 'utf-8', 'id'=>$formId]).
Html::hiddenInput('data', base64_encode(json_encode($params))).
Html::hiddenInput('signature', $this->cnb_signature($params)).
(
$autosubmit ?
$this->autoSubmit($formId) :
Html::input('image', 'btn_text', null, ['src'=>'//static.liqpay.ua/buttons/p'.$liqpayBtnNum.$lang.'.radius.png'])
).
Html::endForm();
return $form;
}
public function autoSubmit($formId, $timeout = 1000)
{
return Html::script("setTimeout(function(){
document.getElementById(\"$formId\").submit();}, $timeout);");
}
/**
* cnb_signature
*
* @param array $params
*
* @return string
*/
public function cnb_signature($params)
{
$params = $this->cnb_params($params);
$private_key = $this->_private_key;
$json = base64_encode( json_encode($params) );
$signature = $this->str_to_sign($private_key . $json . $private_key);
return $signature;
}
/**
* cnb_params
*
* @param array $params
*
* @return array $params
*/
private function cnb_params($params)
{
$params['public_key'] = $this->_public_key;
if (!isset($params['version']))
throw new \InvalidArgumentException('LiqPay: Version is null');
if (!isset($params['amount']))
throw new \InvalidArgumentException('LiqPay: Amount is null');
if (!isset($params['currency']))
throw new \InvalidArgumentException('LiqPay: Currency is null');
if (!in_array($params['currency'], $this->_supportedCurrencies))
throw new \InvalidArgumentException('LiqPay: Currency is not supported');
if (!isset($params['description']))
throw new \InvalidArgumentException('LiqPay: Description is null');
return $params;
}
/**
* str_to_sign
*
* @param string $str
*
* @return string
*/
public function str_to_sign($str)
{
$signature = base64_encode(sha1($str,1));
return $signature;
}
}