wp-optimize / includes / class-updraft-resmushit-task.php

class-updraft-resmushit-task.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.2.3, at includes/class-updraft-resmushit-task.php

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1	<?php
2	/**
3	* A sample implementation using the Resmush.it API and our tasks library
4	*/
5
6	if (!defined('ABSPATH')) die('Access denied.');
7
8	if (!class_exists('Updraft_Smush_Task')) require_once('class-updraft-smush-task.php');
9
10	if (!class_exists('Re_Smush_It_Task')) :
11
12	class Re_Smush_It_Task extends Updraft_Smush_Task {
13
14	public $label = 're-smush-it';
15
16	const MAX_FILESIZE = 5242880;
17
18	const API_URL = 'http://api.resmush.it/';
19
20	/**
21	* Checks if the server is online
22	*
23	* @return boolean - true if yes, false otherwise
24	*/
25	public static function is_server_online() {
26
27	global $wp_version;
28	$test_image = WPO_PLUGIN_MAIN_PATH . 'images/icon/wpo.png';
29	$boundary = wp_generate_password(12);
30	$file_name = basename($test_image);
31
32	$body = "--$boundary";
33	$body .= "\r\n";
34	$body .= "Content-Disposition: form-data; name=\"files\"; filename=\"$file_name\"\r\n";
35	$body .= "\r\n";
36	$body .= file_get_contents($test_image);
37	$body .= "\r\n";
38	$body .= "--$boundary";
39
40	$request = array(
41	'headers' => array( "content-type" => "multipart/form-data; boundary=$boundary" ),
42	'user-agent' => "WordPress $wp_version/WP-Optimize ".WPO_VERSION.' - anonymous', // Anonymous until Resmushit has a clear privacy statement that we can link to
43	'timeout' => 10,
44	'body' => $body,
45	);
46
47	$response = wp_remote_post(self::API_URL, $request);
48
49	if (is_wp_error($response)) {
50	update_option(__CLASS__, $response->get_error_message());
51	return false;
52	}
53
54	$data = json_decode(wp_remote_retrieve_body($response));
55
56
57	if (empty($data)) {
58	update_option(__CLASS__, "Empty data returned by server");
59	return false;
60	}
61
62	if (isset($data->error)) {
63	update_option(__CLASS__, $data->error_long);
64	return false;
65	}
66
67	return true;
68	}
69
70	/**
71	* Prepares the image as part of the post data for the specific implementation
72	*
73	* @param String $local_file - The image to e optimised
74	* @param array $options - Eventual options
75	*/
76	public function prepare_post_request($local_file, $options) {
77	global $wp_version;
78
79	$boundary = wp_generate_password(12);
80	$headers = array( "content-type" => "multipart/form-data; boundary=$boundary" );
81
82	$lossy = $this->get_option('lossy_compression');
83
84	if ($lossy) {
85	$quality = $this->get_option('image_quality');
86	} else {
87	$quality = 100;
88	}
89
90	if (isset($options['quality']) && is_int($options['quality']) && 0 < $options['quality']) $quality = $options['quality'];
91
92	$this->log($quality);
93	$post_fields = array(
94	'qlty' => $quality,
95	'exif' => $this->get_option('preserve_exif', false)
96	);
97	$payload = '';
98	$file_name = basename($local_file);
99
100	foreach ($post_fields as $name => $value) {
101	$payload .= "--$boundary";
102	$payload .= "\r\n";
103	$payload .= "Content-Disposition: form-data; name='$name' \r\n\r\n $value";
104	$payload .= "\r\n";
105	}
106
107	$payload .= "--$boundary";
108	$payload .= "\r\n";
109	$payload .= "Content-Disposition: form-data; name=\"files\"; filename=\"$file_name\"\r\n";
110	$payload .= "\r\n";
111	$payload .= file_get_contents($local_file);
112	$payload .= "\r\n";
113	$payload .= "--$boundary";
114
115	return array(
116	'headers' => $headers,
117	'timeout' => $this->get_option('request_timeout'),
118	'user-agent' => "WordPress $wp_version/WP-Optimize ".WPO_VERSION.' - anonymous', // Anonymous until Resmushit has a clear privacy statement that we can link to
119	'body' => $payload,
120	);
121	}
122
123	/**
124	* Processes the response recieved from the remote server
125	*
126	* @param String $response - The response object
127	*/
128	public function process_server_response($response) {
129	global $http_response_header;
130
131	$response = parent::process_server_response($response);
132	$data = json_decode(wp_remote_retrieve_body($response));
133
134	if (!$data) {
135	$this->log("Cannot establish connection with reSmush.it webservice. Please try later");
136	return false;
137	}
138
139	if (isset($data->error)) {
140	$this->fail($data->error, $data->error_long);
141	return false;
142	}
143
144	if (!property_exists($data, 'dest')) {
145	$this->fail("invalid_response", "The response does not contain the compressed file URL");
146	$this->log("data: ".json_encode($data));
147	return false;
148	}
149
150	$compressed_image_response = wp_remote_get($data->dest);
151
152	if (!is_wp_error($compressed_image_response)) {
153	$image_contents = wp_remote_retrieve_body($compressed_image_response);
154	if ($this->is_downloaded_image_buffer_mime_type_valid($image_contents)) {
155	return $image_contents;
156	} else {
157	$this->log("The downloaded resource does not have a matching mime type.");
158	return false;
159	}
160	} else {
161	$this->fail("invalid_response", "The compression apparently succeeded, but WP-Optimize could not retrieve the compressed image from the remote server.");
162	$this->log("data: ".json_encode($data));
163	if (!empty($http_response_header) && is_array($http_response_header)) {
164	$this->log("headers: ".implode("\n", $http_response_header));
165	}
166	return false;
167	}
168	}
169
170	/**
171	* Retrieve features for this service
172	*
173	* @return Array - an array of options
174	*/
175	public static function get_features() {
176	return array(
177	'max_filesize' => self::MAX_FILESIZE,
178	'lossy_compression' => false,
179	'preserve_exif' => true,
180	);
181	}
182
183	/**
184	* Retrieve default options for this task type.
185	*
186	* @return Array - an array of options
187	*/
188	public function get_default_options() {
189	return array(
190	'allowed_file_types' => array('gif', 'png', 'jpg', 'tif', 'jpeg'),
191	'request_timeout' => 30,
192	'keep_original' => true,
193	'preserve_exif' => false,
194	'image_quality' => 98,
195	'api_endpoint' => self::API_URL,
196	'max_filesize' => self::MAX_FILESIZE,
197	'version' => '0.1.13',
198	'backup_prefix' => '-updraft-pre-smush-original.'
199	);
200	}
201	}
202	endif;
203