wp-optimize / includes / class-re-smush-it-task.php

class-re-smush-it-task.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.2.9, at includes/class-re-smush-it-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('Re_Smush_It_Task')) :
9
10	class Re_Smush_It_Task extends Updraft_Smush_Task {
11
12	public $label = 're-smush-it';
13
14	const MAX_FILESIZE = 5242880;
15
16	const API_URL = 'http://api.resmush.it/';
17
18	/**
19	* Checks if the server is online
20	*
21	* @return boolean - true if yes, false otherwise
22	*/
23	public static function is_server_online() {
24
25	global $wp_version;
26	$test_image = WPO_PLUGIN_MAIN_PATH . 'images/icon/wpo.png';
27	$boundary = wp_generate_password(12);
28	$file_name = basename($test_image);
29
30	$body = "--$boundary";
31	$body .= "\r\n";
32	$body .= "Content-Disposition: form-data; name=\"files\"; filename=\"$file_name\"\r\n";
33	$body .= "\r\n";
34	$body .= file_get_contents($test_image);
35	$body .= "\r\n";
36	$body .= "--$boundary";
37
38	$request = array(
39	'headers' => array( "content-type" => "multipart/form-data; boundary=$boundary" ),
40	'user-agent' => "WordPress $wp_version/WP-Optimize ".WPO_VERSION.' - anonymous', // Anonymous until Resmushit has a clear privacy statement that we can link to
41	'timeout' => 10,
42	'body' => $body,
43	);
44
45	$response = wp_remote_post(self::API_URL, $request);
46
47	if (is_wp_error($response)) {
48	update_option(__CLASS__, $response->get_error_message());
49	return false;
50	}
51
52	$data = json_decode(wp_remote_retrieve_body($response));
53
54
55	if (empty($data)) {
56	update_option(__CLASS__, "Empty data returned by server");
57	return false;
58	}
59
60	if (isset($data->error)) {
61	update_option(__CLASS__, $data->error_long);
62	return false;
63	}
64
65	return true;
66	}
67
68	/**
69	* Prepares the image as part of the post data for the specific implementation
70	*
71	* @param String $local_file - The image to e optimised
72	* @param array $options - Eventual options
73	*/
74	public function prepare_post_request($local_file, $options) {
75	global $wp_version;
76
77	$boundary = wp_generate_password(12);
78	$headers = array( "content-type" => "multipart/form-data; boundary=$boundary" );
79
80	$lossy = $this->get_option('lossy_compression');
81
82	if ($lossy) {
83	$quality = $this->get_option('image_quality');
84	} else {
85	$quality = 100;
86	}
87
88	if (isset($options['quality']) && is_int($options['quality']) && 0 < $options['quality']) $quality = $options['quality'];
89
90	$this->log($quality);
91	$post_fields = array(
92	'qlty' => $quality,
93	'exif' => $this->get_option('preserve_exif', false)
94	);
95	$payload = '';
96	$file_name = basename($local_file);
97
98	foreach ($post_fields as $name => $value) {
99	$payload .= "--$boundary";
100	$payload .= "\r\n";
101	$payload .= "Content-Disposition: form-data; name='$name' \r\n\r\n $value";
102	$payload .= "\r\n";
103	}
104
105	$payload .= "--$boundary";
106	$payload .= "\r\n";
107	$payload .= "Content-Disposition: form-data; name=\"files\"; filename=\"$file_name\"\r\n";
108	$payload .= "\r\n";
109	$payload .= file_get_contents($local_file);
110	$payload .= "\r\n";
111	$payload .= "--$boundary";
112
113	return array(
114	'headers' => $headers,
115	'timeout' => $this->get_option('request_timeout'),
116	'user-agent' => "WordPress $wp_version/WP-Optimize ".WPO_VERSION.' - anonymous', // Anonymous until Resmushit has a clear privacy statement that we can link to
117	'body' => $payload,
118	);
119	}
120
121	/**
122	* Processes the response recieved from the remote server
123	*
124	* @param String $response - The response object
125	*/
126	public function process_server_response($response) {
127	global $http_response_header;
128
129	$response = parent::process_server_response($response);
130	$data = json_decode(wp_remote_retrieve_body($response));
131
132	if (!$data) {
133	$this->log("Cannot establish connection with reSmush.it webservice. Please try later");
134	return false;
135	}
136
137	if (isset($data->error)) {
138	$this->fail($data->error, $data->error_long);
139	return false;
140	}
141
142	if (!property_exists($data, 'dest')) {
143	$this->fail("invalid_response", "The response does not contain the compressed file URL");
144	$this->log("data: ".json_encode($data));
145	return false;
146	}
147
148	$compressed_image_response = wp_remote_get($data->dest);
149
150	if (!is_wp_error($compressed_image_response)) {
151	$image_contents = wp_remote_retrieve_body($compressed_image_response);
152	if ($this->is_downloaded_image_buffer_mime_type_valid($image_contents)) {
153	return $image_contents;
154	} else {
155	$this->log("The downloaded resource does not have a matching mime type.");
156	return false;
157	}
158	} else {
159	$this->fail("invalid_response", "The compression apparently succeeded, but WP-Optimize could not retrieve the compressed image from the remote server.");
160	$this->log("data: ".json_encode($data));
161	if (!empty($http_response_header) && is_array($http_response_header)) {
162	$this->log("headers: ".implode("\n", $http_response_header));
163	}
164	return false;
165	}
166	}
167
168	/**
169	* Retrieve features for this service
170	*
171	* @return Array - an array of options
172	*/
173	public static function get_features() {
174	return array(
175	'max_filesize' => self::MAX_FILESIZE,
176	'lossy_compression' => false,
177	'preserve_exif' => true,
178	);
179	}
180
181	/**
182	* Retrieve default options for this task type.
183	*
184	* @return Array - an array of options
185	*/
186	public function get_default_options() {
187	return array(
188	'allowed_file_types' => array('gif', 'png', 'jpg', 'tif', 'jpeg'),
189	'request_timeout' => 30,
190	'keep_original' => true,
191	'preserve_exif' => false,
192	'image_quality' => 98,
193	'api_endpoint' => self::API_URL,
194	'max_filesize' => self::MAX_FILESIZE,
195	'version' => '0.1.13',
196	'backup_prefix' => '-updraft-pre-smush-original.'
197	);
198	}
199	}
200	endif;
201