/**
* Post back to PayPal to check whether this request is a valid one
*
* @return void
* @throws RemoteServiceUnavailableException
* @throws \Exception
*/
protected function _postBack()
{
$httpAdapter = $this->_curlFactory->create();
$postbackQuery = http_build_query($this->getRequestData()) . '&cmd=_notify-validate';
$postbackUrl = $this->_config->getPayPalIpnUrl();
$this->_addDebugData('postback_to', $postbackUrl);
$httpAdapter->setConfig(['verifypeer' => $this->_config->getValue('verifyPeer')]);
$httpAdapter->write(\Zend_Http_Client::POST, $postbackUrl, '1.1', ['Connection: close'], $postbackQuery);
try {
$postbackResult = $httpAdapter->read();
} catch (\Exception $e) {
$this->_addDebugData('http_error', ['error' => $e->getMessage(), 'code' => $e->getCode()]);
throw $e;
}
/*
* Handle errors on PayPal side.
*/
$responseCode = \Zend_Http_Response::extractCode($postbackResult);
if (empty($postbackResult) || in_array($responseCode, ['500', '502', '503'])) {
if (empty($postbackResult)) {
$reason = 'Empty response.';
} else {
$reason = 'Response code: ' . $responseCode . '.';
}
$this->_debugData['exception'] = 'PayPal IPN postback failure. ' . $reason;
throw new RemoteServiceUnavailableException(__($reason));
}
$response = preg_split('/^\\r?$/m', $postbackResult, 2);
$response = trim($response[1]);
if ($response != 'VERIFIED') {
$this->_addDebugData('postback', $postbackQuery);
$this->_addDebugData('postback_result', $postbackResult);
throw new \Exception('PayPal IPN postback failure. See system.log for details.');
}
}
/**
* If file is accessible return true or false
*
* @return bool
*/
private function _isFileAccessible()
{
$unsecureBaseURL = $this->_config->getValue(Store::XML_PATH_UNSECURE_BASE_URL, 'default');
/** @var $http \Magento\Framework\HTTP\Adapter\Curl */
$http = $this->_curlFactory->create();
$http->setConfig(['timeout' => $this->_verificationTimeOut]);
$http->write(\Zend_Http_Client::POST, $unsecureBaseURL . $this->_filePath);
$responseBody = $http->read();
$responseCode = \Zend_Http_Response::extractCode($responseBody);
$http->close();
return $responseCode == 200;
}
/**
* Retrieve feed data as XML element
*
* @return \SimpleXMLElement
*/
public function getFeedData()
{
$curl = $this->curlFactory->create();
$curl->setConfig(
[
'timeout' => 2,
'useragent' => $this->productMetadata->getName()
. '/' . $this->productMetadata->getVersion()
. ' (' . $this->productMetadata->getEdition() . ')',
'referer' => $this->urlBuilder->getUrl('*/*/*')
]
);
$curl->write(\Zend_Http_Client::GET, $this->getFeedUrl(), '1.0');
$data = $curl->read();
if ($data === false) {
return false;
}
$data = preg_split('/^\r?$/m', $data, 2);
$data = trim($data[1]);
$curl->close();
try {
$xml = new \SimpleXMLElement($data);
} catch (\Exception $e) {
return false;
}
return $xml;
}
/**
* Send http request
*
* @param string $endpoint
* @param array $params
* @return array
*/
public function sendRequest($endpoint, $params)
{
$curl = $this->curlFactory->create();
$config = ['timeout' => 10];
$curl->setConfig($config);
$curl->write(\Zend_Http_Client::POST, $endpoint, '1.1', [], http_build_query($params, '', '&'));
$response = $curl->read();
$response = preg_split('/^\\r?$/m', $response, 2);
$response = trim($response[1]);
$response = @unserialize($response);
if (is_array($response)) {
return $response;
}
return [];
}
/**
* Post back to PayPal to check whether this request is a valid one
*
* @return void
* @throws \Exception
*/
protected function _postBack()
{
$httpAdapter = $this->_curlFactory->create();
$postbackQuery = http_build_query($this->getRequestData()) . '&cmd=_notify-validate';
$postbackUrl = $this->_config->getPaypalUrl();
$this->_addDebugData('postback_to', $postbackUrl);
$httpAdapter->setConfig(array('verifypeer' => $this->_config->getConfigValue('verifyPeer')));
$httpAdapter->write(\Zend_Http_Client::POST, $postbackUrl, '1.1', array('Connection: close'), $postbackQuery);
try {
$postbackResult = $httpAdapter->read();
} catch (\Exception $e) {
$this->_addDebugData('http_error', array('error' => $e->getMessage(), 'code' => $e->getCode()));
throw $e;
}
$response = preg_split('/^\\r?$/m', $postbackResult, 2);
$response = trim($response[1]);
if ($response != 'VERIFIED') {
$this->_addDebugData('postback', $postbackQuery);
$this->_addDebugData('postback_result', $postbackResult);
throw new \Exception('PayPal IPN postback failure. See ' . self::DEFAULT_LOG_FILE . ' for details.');
}
}
/**
* Do the API call
*
* @param string $methodName
* @param array $request
* @return array
* @throws \Magento\Framework\Exception\LocalizedException|\Exception
* @SuppressWarnings(PHPMD.CyclomaticComplexity)
*/
public function call($methodName, array $request)
{
$request = $this->_addMethodToRequest($methodName, $request);
$eachCallRequest = $this->_prepareEachCallRequest($methodName);
if ($this->getUseCertAuthentication()) {
$key = array_search('SIGNATURE', $eachCallRequest);
if ($key) {
unset($eachCallRequest[$key]);
}
}
$request = $this->_exportToRequest($eachCallRequest, $request);
$debugData = ['url' => $this->getApiEndpoint(), $methodName => $request];
try {
$http = $this->_curlFactory->create();
$config = ['timeout' => 60, 'verifypeer' => $this->_config->getValue('verifyPeer')];
if ($this->getUseProxy()) {
$config['proxy'] = $this->getProxyHost() . ':' . $this->getProxyPort();
}
if ($this->getUseCertAuthentication()) {
$config['ssl_cert'] = $this->getApiCertificate();
}
$http->setConfig($config);
$http->write(\Zend_Http_Client::POST, $this->getApiEndpoint(), '1.1', $this->_headers, $this->_buildQuery($request));
$response = $http->read();
} catch (\Exception $e) {
$debugData['http_error'] = ['error' => $e->getMessage(), 'code' => $e->getCode()];
$this->_debug($debugData);
throw $e;
}
$response = preg_split('/^\\r?$/m', $response, 2);
$response = trim($response[1]);
$response = $this->_deformatNVP($response);
$debugData['response'] = $response;
$this->_debug($debugData);
$response = $this->_postProcessResponse($response);
// handle transport error
if ($http->getErrno()) {
$this->_logger->critical(new \Exception(sprintf('PayPal NVP CURL connection error #%s: %s', $http->getErrno(), $http->getError())));
$http->close();
throw new \Magento\Framework\Exception\LocalizedException(__('We can\'t contact the PayPal gateway.'));
}
// cUrl resource must be closed after checking it for errors
$http->close();
if (!$this->_validateResponse($methodName, $response)) {
$this->_logger->critical(new \Exception(__("PayPal response hasn't required fields.")));
throw new \Magento\Framework\Exception\LocalizedException(__('Something went wrong while processing your order.'));
}
$this->_callErrors = [];
if ($this->_isCallSuccessful($response)) {
if ($this->_rawResponseNeeded) {
$this->setRawSuccessResponseData($response);
}
return $response;
}
$this->_handleCallErrors($response);
return $response;
}