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CURLConnector.php
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CURLConnector.php
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<?php
/**
* Copyright 2019 Klarna AB
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* File containing the Connector class.
*/
namespace Klarna\Rest\Transport;
/**
* Transport connector used to authenticate and make HTTP requests against the
* Klarna APIs. Transport uses CURL to perform HTTP(s) calls.
*/
class CURLConnector implements ConnectorInterface
{
/**
* Default request type
*/
const DEFAULT_CONTENT_TYPE = 'application/json';
/**
* Extra CURL request options.
*/
protected $options = [];
/**
* Merchant ID.
*
* @var string
*/
protected $merchantId;
/**
* Shared secret.
*
* @var string
*/
protected $sharedSecret;
/**
* Base URL.
*
* @var string
*/
protected $baseUrl;
/**
* HTTP user agent.
*
* @var UserAgent
*/
protected $userAgent;
public function __construct(
$merchantId,
$sharedSecret,
$baseUrl,
UserAgentInterface $userAgent = null
) {
$this->merchantId = $merchantId;
$this->sharedSecret = $sharedSecret;
$this->baseUrl = rtrim($baseUrl, '/');
if ($userAgent === null) {
$userAgent = UserAgent::createDefault(['CURLConnector/' . curl_version()['version']]);
}
$this->userAgent = $userAgent;
}
/**
* Sets CURL request options.
*
* @param options CURL options
*
* @return self instance
*/
public function setOptions($options)
{
$this->options = $options;
return $this;
}
/**
* Sends HTTP GET request to specified path.
*
* @param string $path URL path.
* @param array $headers HTTP request headers
* @return ApiResponse Processed response
*
* @throws RuntimeException if HTTP transport failed to execute a call
*/
public function get($path, $headers = [])
{
return $this->request(Method::GET, $path, $headers);
}
/**
* Sends HTTP POST request to specified path.
*
* @param string $path URL path.
* @param string $data Data to be sent to API server in a payload. Example: json-encoded string
* @param array $headers HTTP request headers
* @return ApiResponse Processed response
* @throws RuntimeException if HTTP transport failed to execute a call
*/
public function post($path, $data = null, $headers = [])
{
return $this->request(Method::POST, $path, $headers, $data);
}
/**
* Sends HTTP PUT request to specified path.
*
* @param string $path URL path.
* @param string $data Data to be sent to API server in a payload. Example: json-encoded string
* @param array $headers HTTP request headers
* @return ApiResponse Processed response
*
* @throws RuntimeException if HTTP transport failed to execute a call
*/
public function put($path, $data = null, $headers = [])
{
return $this->request(Method::PUT, $path, $headers, $data);
}
/**
* Sends HTTP PATCH request to specified path.
*
* @param string $path URL path.
* @param string $data Data to be sent to API server in a payload. Example: json-encoded string
* @param array $headers HTTP request headers
* @return ApiResponse Processed response
*
* @throws RuntimeException if HTTP transport failed to execute a call
*/
public function patch($path, $data = null, $headers = [])
{
return $this->request(Method::PATCH, $path, $headers, $data);
}
/**
* Sends HTTP DELETE request to specified path.
*
* @param string $path URL path.
* @param string $data Data to be sent to API server in a payload. Example: json-encoded string
* @param array $headers HTTP request headers
* @return ApiResponse Processed response
*
* @throws RuntimeException if HTTP transport failed to execute a call
*/
public function delete($path, $data = null, $headers = [])
{
return $this->request(Method::DELETE, $path, $headers, $data);
}
/**
* Performs HTTP(S) request.
*
* @param string $path URL path.
* @param string $data Data to be sent to API server in a payload. Example: json-encoded string
* @param array $headers HTTP request headers
* @return ApiResponse Processed response
*
* @throws RuntimeException if HTTP transport failed to execute a call
*/
protected function request($method, $url, array $headers = [], $data = null)
{
$headers = array_merge([
'User-Agent' => (string) $this->userAgent,
], $headers);
if (isset($this->options['headers'])) {
$headers = array_merge($headers, $this->options['headers']);
}
array_walk($headers, function (&$v, $k) {
$v = $k . ': ' . $v;
});
$ch = curl_init();
if (!empty($this->merchantId)) {
curl_setopt($ch, CURLOPT_USERPWD, $this->merchantId . ':' . $this->sharedSecret);
}
if (!empty($this->options['ssl_cert'])) {
curl_setopt($ch, CURLOPT_SSLCERT, $this->options['ssl_cert']);
if (!empty($this->options['ssl_key'])) {
curl_setopt($ch, CURLOPT_SSLKEY, $this->options['ssl_key']);
}
}
if (!empty($this->options['timeout'])) {
curl_setopt($ch, CURLOPT_TIMEOUT, $this->options['timeout']);
}
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
if ($method == Method::GET) {
curl_setopt($ch, CURLOPT_HTTPGET, 1);
} elseif ($method == Method::POST) {
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
} else {
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
}
curl_setopt($ch, CURLOPT_URL, $this->baseUrl . $url);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
if ($proxy = getenv('HTTP_PROXY')) {
$proxy = parse_url($proxy);
$proxyHost = $proxy['host'];
$proxyPort = $proxy['port'] ? ':' . $proxy['post'] : '';
curl_setopt($ch, CURLOPT_PROXY, $proxyHost . $proxyPort);
if (!empty($proxy['user'])) {
curl_setopt($ch, CURLOPT_PROXYUSERPWD, $proxy['user'] . ':' . $proxy['pass']);
}
}
$response = curl_exec($ch);
$errno = curl_errno($ch);
$error = curl_error($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
curl_close($ch);
// Check the TCP transport issues
if (!empty($errno)) {
throw new \RuntimeException($error, $errno);
}
$rawHeaders = substr($response, 0, $header_size);
$body = substr($response, $header_size);
$headers = self::parseHeaders($rawHeaders);
return new ApiResponse($http_code, $body, $headers);
}
/**
* Factory method to create a connector instance.
*
* @param string $merchantId Merchant ID
* @param string $sharedSecret Shared secret
* @param string $baseUrl Base URL for HTTP requests
* @param UserAgentInterface $userAgent HTTP user agent to identify the client
*
* @return self
*/
public static function create(
$merchantId,
$sharedSecret,
$baseUrl = self::EU_BASE_URL,
UserAgentInterface $userAgent = null
) {
return new static($merchantId, $sharedSecret, $baseUrl, $userAgent);
}
/**
* Converts raw curl headers response to array.
*
* @param string $rawHeaders Headers part from the curl response
*
* @return array list of HTTP headers
*/
protected static function parseHeaders($rawHeaders)
{
$headers = [];
foreach (explode("\r\n", $rawHeaders) as $i => $line) {
if (strlen($line) == 0) {
continue;
}
if (strpos($line, 'HTTP/') !== false) {
// The line contains the HTTP response information
$headers['Http'] = $line;
continue;
}
list($key, $value) = explode(': ', $line);
$headers[ucwords($key, '-_')][] = $value;
}
return $headers;
}
}