imagify / vendor / wp-media / wp-mixpanel / src / Classes / ConsumerStrategies / CurlConsumer.php

CurlConsumer.php in Imagify Image Optimization: Optimize Images | Compress & Convert to WebP/AVIF 2.3.2, at vendor/wp-media/wp-mixpanel/src/Classes/ConsumerStrategies/CurlConsumer.php

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1	<?php
2
3	/**
4	* Consumes messages and sends them to a host/endpoint using cURL
5	*/
6	class Imagify_WPMedia_ConsumerStrategies_CurlConsumer extends Imagify_WPMedia_ConsumerStrategies_AbstractConsumer {
7
8	/**
9	* @var string the host to connect to (e.g. api.mixpanel.com)
10	*/
11	protected $_host;
12
13
14	/**
15	* @var string the host-relative endpoint to write to (e.g. /engage)
16	*/
17	protected $_endpoint;
18
19
20	/**
21	* @var int connect_timeout The number of seconds to wait while trying to connect. Default is 5 seconds.
22	*/
23	protected $_connect_timeout;
24
25
26	/**
27	* @var int timeout The maximum number of seconds to allow cURL call to execute. Default is 30 seconds.
28	*/
29	protected $_timeout;
30
31
32	/**
33	* @var string the protocol to use for the cURL connection
34	*/
35	protected $_protocol;
36
37
38	/**
39	* @var bool\|null true to fork the cURL process (using exec) or false to use PHP's cURL extension. false by default
40	*/
41	protected $_fork = null;
42
43
44	/**
45	* @var int number of cURL requests to run in parallel. 1 by default
46	*/
47	protected $_num_threads;
48
49
50	/**
51	* Creates a new CurlConsumer and assigns properties from the $options array
52	* @param array $options
53	* @throws Exception
54	*/
55	function __construct($options) {
56	parent::__construct($options);
57
58	$this->_host = $options['host'];
59	$this->_endpoint = $options['endpoint'];
60	$this->_connect_timeout = isset($options['connect_timeout']) ? $options['connect_timeout'] : 5;
61	$this->_timeout = isset($options['timeout']) ? $options['timeout'] : 30;
62	$this->_protocol = isset($options['use_ssl']) && $options['use_ssl'] == true ? "https" : "http";
63	$this->_fork = isset($options['fork']) ? ($options['fork'] == true) : false;
64	$this->_num_threads = isset($options['num_threads']) ? max(1, intval($options['num_threads'])) : 1;
65
66	// ensure the environment is workable for the given settings
67	if ($this->_fork == true) {
68	$exists = function_exists('exec');
69	if (!$exists) {
70	throw new Exception('The "exec" function must exist to use the cURL consumer in "fork" mode. Try setting fork = false or use another consumer.');
71	}
72	$disabled = explode(', ', ini_get('disable_functions'));
73	$enabled = !in_array('exec', $disabled);
74	if (!$enabled) {
75	throw new Exception('The "exec" function must be enabled to use the cURL consumer in "fork" mode. Try setting fork = false or use another consumer.');
76	}
77	} else {
78	if (!function_exists('curl_init')) {
79	throw new Exception('The cURL PHP extension is required to use the cURL consumer with fork = false. Try setting fork = true or use another consumer.');
80	}
81	}
82	}
83
84
85	/**
86	* Write to the given host/endpoint using either a forked cURL process or using PHP's cURL extension
87	* @param array $batch
88	* @return bool
89	*/
90	public function persist($batch) {
91	if (count($batch) > 0) {
92	$url = $this->_protocol . "://" . $this->_host . $this->_endpoint;
93	if ($this->_fork) {
94	$data = "data=" . $this->_encode($batch);
95	return $this->_execute_forked($url, $data);
96	} else {
97	return $this->_execute($url, $batch);
98	}
99	} else {
100	return true;
101	}
102	}
103
104
105	/**
106	* Write using the cURL php extension
107	* @param $url
108	* @param $batch
109	* @return bool
110	*/
111	protected function _execute($url, $batch) {
112	if ($this->_debug()) {
113	$this->_log("Making blocking cURL call to $url");
114	}
115
116	$mh = curl_multi_init();
117	$chs = array();
118
119	$batch_size = ceil(count($batch) / $this->_num_threads);
120	for ($i=0; $i<$this->_num_threads && !empty($batch); $i++) {
121	$ch = curl_init();
122	$chs[] = $ch;
123	$data = "data=" . $this->_encode(array_splice($batch, 0, $batch_size));
124	curl_setopt($ch, CURLOPT_URL, $url);
125	curl_setopt($ch, CURLOPT_HEADER, 0);
126	curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $this->_connect_timeout);
127	curl_setopt($ch, CURLOPT_TIMEOUT, $this->_timeout);
128	curl_setopt($ch, CURLOPT_POST, 1);
129	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
130	curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
131	curl_multi_add_handle($mh,$ch);
132	}
133
134	$running = 0;
135
136	do {
137	curl_multi_exec($mh, $running);
138	curl_multi_select($mh);
139	} while ($running > 0);
140
141	$info = curl_multi_info_read($mh);
142
143	$error = false;
144	foreach ($chs as $ch) {
145	$response = curl_multi_getcontent($ch);
146	if (false === $response) {
147	$this->_handleError(curl_errno($ch), curl_error($ch));
148	$error = true;
149	}
150	elseif ("1" != trim($response)) {
151	$this->_handleError(0, $response);
152	$error = true;
153	}
154	curl_multi_remove_handle($mh, $ch);
155	}
156
157	if (CURLE_OK != $info['result']) {
158	$this->_handleError($info['result'], "cURL error with code=".$info['result']);
159	$error = true;
160	}
161
162	curl_multi_close($mh);
163	return !$error;
164	}
165
166
167	/**
168	* Write using a forked cURL process
169	* @param $url
170	* @param $data
171	* @return bool
172	*/
173	protected function _execute_forked($url, $data) {
174
175	if ($this->_debug()) {
176	$this->_log("Making forked cURL call to $url");
177	}
178
179	$exec = 'curl -X POST -H "Content-Type: application/x-www-form-urlencoded" -d ' . $data . ' "' . $url . '"';
180
181	if(!$this->_debug()) {
182	$exec .= " >/dev/null 2>&1 &";
183	}
184
185	exec($exec, $output, $return_var);
186
187	if ($return_var != 0) {
188	$this->_handleError($return_var, $output);
189	}
190
191	return $return_var == 0;
192	}
193
194	/**
195	* @return int
196	*/
197	public function getConnectTimeout()
198	{
199	return $this->_connect_timeout;
200	}
201
202	/**
203	* @return string
204	*/
205	public function getEndpoint()
206	{
207	return $this->_endpoint;
208	}
209
210	/**
211	* @return bool\|null
212	*/
213	public function getFork()
214	{
215	return $this->_fork;
216	}
217
218	/**
219	* @return string
220	*/
221	public function getHost()
222	{
223	return $this->_host;
224	}
225
226	/**
227	* @return array
228	*/
229	public function getOptions()
230	{
231	return $this->_options;
232	}
233
234	/**
235	* @return string
236	*/
237	public function getProtocol()
238	{
239	return $this->_protocol;
240	}
241
242	/**
243	* @return int
244	*/
245	public function getTimeout()
246	{
247	return $this->_timeout;
248	}
249
250
251	/**
252	* Number of requests/batches that will be processed in parallel using curl_multi_exec.
253	* @return int
254	*/
255	public function getNumThreads() {
256	return $this->_num_threads;
257	}
258	}
259