1 <?php
2 /**
3 * Copyright 2015 Klarna AB
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 * File containing the Klarna_Checkout_HTTP_CURLTransport class
18 *
19 * PHP version 5.3
20 *
21 * @category Payment
22 * @package Payment_Klarna
23 * @subpackage HTTP
24 * @author Klarna <support@klarna.com>
25 * @copyright 2015 Klarna AB AB
26 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache license v2.0
27 * @link http://developers.klarna.com/
28 */
29
30 /**
31 * Klarna HTTP transport implementation for cURL
32 *
33 * @category Payment
34 * @package Payment_Klarna
35 * @subpackage HTTP
36 * @author Klarna <support@klarna.com>
37 * @copyright 2015 Klarna AB
38 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache license v2.0
39 * @link http://developers.klarna.com/
40 */
41 class Klarna_Checkout_HTTP_CURLTransport implements
42 Klarna_Checkout_HTTP_TransportInterface
43 {
44 const DEFAULT_TIMEOUT = 10;
45
46 /**
47 * Factory for cUrl
48 *
49 * @var Klarna_Checkout_HTTP_CURLFactory
50 */
51 protected $curl;
52
53 /**
54 * Number of seconds before the connection times out.
55 *
56 * @var int
57 */
58 protected $timeout;
59
60 /**
61 * Options for cURL
62 *
63 * @var array
64 */
65 protected $options;
66
67 /**
68 * Initializes a new instance of the HTTP cURL class.
69 *
70 * @param Klarna_Checkout_HTTP_CURLFactory $curl factory to for curl handles
71 */
72 public function __construct(Klarna_Checkout_HTTP_CURLFactory $curl)
73 {
74 $this->curl = $curl;
75 $this->timeout = self::DEFAULT_TIMEOUT;
76 $this->options = array();
77 }
78
79 /**
80 * Set specific cURL options.
81 *
82 * @param int $option cURL option constant
83 * @param mixed $value cURL option value
84 *
85 * @return void
86 */
87 public function setOption($option, $value)
88 {
89 $this->options[$option] = $value;
90 }
91
92 /**
93 * Sets the number of seconds until a connection times out.
94 *
95 * @param int $timeout number of seconds
96 *
97 * @return void
98 */
99 public function setTimeout($timeout)
100 {
101 $this->timeout = intval($timeout);
102 }
103
104 /**
105 * Gets the number of seconds before the connection times out.
106 *
107 * @return int timeout in number of seconds
108 */
109 public function getTimeout()
110 {
111 return $this->timeout;
112 }
113
114 /**
115 * Performs a HTTP request.
116 *
117 * @param Klarna_Checkout_HTTP_Request $request the HTTP request to send.
118 *
119 * @throws RuntimeException Thrown if a cURL handle cannot
120 * be initialized.
121 * @throws Klarna_Checkout_ConnectionErrorException Thrown for unspecified
122 * network or hardware issues.
123 * @return Klarna_Checkout_HTTP_Response
124 */
125 public function send(Klarna_Checkout_HTTP_Request $request)
126 {
127 $curl = $this->curl->handle();
128 if ($curl === false) {
129 throw new RuntimeException(
130 'Failed to initialize a HTTP handle.'
131 );
132 }
133
134 $url = $request->getURL();
135 $curl->setOption(CURLOPT_URL, $url);
136
137 $method = $request->getMethod();
138 if ($method === 'POST') {
139 $curl->setOption(CURLOPT_POST, true);
140 $curl->setOption(CURLOPT_POSTFIELDS, $request->getData());
141 }
142
143 // Convert headers to cURL format.
144 $requestHeaders = array();
145 foreach ($request->getHeaders() as $key => $value) {
146 $requestHeaders[] = $key . ': ' . $value;
147 }
148
149 $curl->setOption(CURLOPT_HTTPHEADER, $requestHeaders);
150
151 $curl->setOption(CURLOPT_RETURNTRANSFER, true);
152 $curl->setOption(CURLOPT_CONNECTTIMEOUT, $this->timeout);
153 $curl->setOption(CURLOPT_TIMEOUT, $this->timeout);
154
155 $curlHeaders = new Klarna_Checkout_HTTP_CURLHeaders();
156 $curl->setOption(
157 CURLOPT_HEADERFUNCTION,
158 array(&$curlHeaders, 'processHeader')
159 );
160
161 $curl->setOption(CURLOPT_SSL_VERIFYHOST, 2);
162 $curl->setOption(CURLOPT_SSL_VERIFYPEER, true);
163
164 // Override specific set options
165 foreach ($this->options as $option => $value) {
166 $curl->setOption($option, $value);
167 }
168
169 $payload = $curl->execute();
170 $info = $curl->getInfo();
171 $error = $curl->getError();
172
173 $curl->close();
174
175 /*
176 * A failure occurred if:
177 * payload is false (e.g. HTTP timeout?).
178 * info is false, then it has no HTTP status code.
179 */
180 if ($payload === false || $info === false) {
181 throw new Klarna_Checkout_ConnectionErrorException(
182 "Connection to '{$url}' failed: {$error}"
183 );
184 }
185
186 $headers = $curlHeaders->getHeaders();
187
188 // Convert Content-Type into a normal header
189 $headers['Content-Type'] = $info['content_type'];
190
191 $response = new Klarna_Checkout_HTTP_Response(
192 $request, $headers, intval($info['http_code']), strval($payload)
193 );
194
195 return $response;
196 }
197
198 /**
199 * Creates a HTTP request object.
200 *
201 * @param string $url the request URL.
202 *
203 * @throws InvalidArgumentException If the specified argument
204 * is not of type string.
205 * @return Klarna_Checkout_HTTP_Request
206 */
207 public function createRequest($url)
208 {
209 return new Klarna_Checkout_HTTP_Request($url);
210 }
211 }
212