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 3.3.1, at includes/class-re-smush-it-task.php

200 lines 5.5 KB

Raw Download Zip

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	$quality = 92;
86	}
87
88	if (isset($options['quality']) && is_int($options['quality']) && 0 < $options['quality']) $quality = $options['quality'];
89
90	$post_fields = array(
91	'qlty' => $quality,
92	'exif' => $this->get_option('preserve_exif', false)
93	);
94	$payload = '';
95	$file_name = basename($local_file);
96
97	foreach ($post_fields as $name => $value) {
98	$payload .= "--$boundary";
99	$payload .= "\r\n";
100	$payload .= "Content-Disposition: form-data; name='$name' \r\n\r\n $value";
101	$payload .= "\r\n";
102	}
103
104	$payload .= "--$boundary";
105	$payload .= "\r\n";
106	$payload .= "Content-Disposition: form-data; name=\"files\"; filename=\"$file_name\"\r\n";
107	$payload .= "\r\n";
108	$payload .= file_get_contents($local_file);
109	$payload .= "\r\n";
110	$payload .= "--$boundary";
111
112	return array(
113	'headers' => $headers,
114	'timeout' => $this->get_option('request_timeout'),
115	'user-agent' => "WordPress $wp_version/WP-Optimize ".WPO_VERSION.' - anonymous', // Anonymous until Resmushit has a clear privacy statement that we can link to
116	'body' => $payload,
117	);
118	}
119
120	/**
121	* Processes the response received from the remote server
122	*
123	* @param String $response - The response object
124	*/
125	public function process_server_response($response) {
126	global $http_response_header;
127
128	$response = parent::process_server_response($response);
129	$data = json_decode(wp_remote_retrieve_body($response));
130
131	if (!$data) {
132	$this->log("Cannot establish connection with reSmush.it webservice. Please try later");
133	return false;
134	}
135
136	if (isset($data->error)) {
137	$this->fail($data->error, $data->error_long);
138	return false;
139	}
140
141	if (!property_exists($data, 'dest')) {
142	$this->fail("invalid_response", "The response does not contain the compressed file URL");
143	$this->log("data: ".json_encode($data));
144	return false;
145	}
146
147	$compressed_image_response = wp_remote_get($data->dest);
148
149	if (!is_wp_error($compressed_image_response)) {
150	$image_contents = wp_remote_retrieve_body($compressed_image_response);
151	if ($this->is_downloaded_image_buffer_mime_type_valid($image_contents)) {
152	return $image_contents;
153	} else {
154	$this->log("The downloaded resource does not have a matching mime type.");
155	return false;
156	}
157	} else {
158	$this->fail("invalid_response", "The compression apparently succeeded, but WP-Optimize could not retrieve the compressed image from the remote server.");
159	$this->log("data: ".json_encode($data));
160	if (!empty($http_response_header) && is_array($http_response_header)) {
161	$this->log("headers: ".implode("\n", $http_response_header));
162	}
163	return false;
164	}
165	}
166
167	/**
168	* Retrieve features for this service
169	*
170	* @return Array - an array of options
171	*/
172	public static function get_features() {
173	return array(
174	'max_filesize' => self::MAX_FILESIZE,
175	'lossy_compression' => false,
176	'preserve_exif' => true,
177	);
178	}
179
180	/**
181	* Retrieve default options for this task type.
182	*
183	* @return Array - an array of options
184	*/
185	public function get_default_options() {
186	return array(
187	'allowed_file_types' => array('gif', 'png', 'jpg', 'tif', 'jpeg'),
188	'request_timeout' => 30,
189	'keep_original' => true,
190	'preserve_exif' => false,
191	'image_quality' => 92,
192	'api_endpoint' => self::API_URL,
193	'max_filesize' => self::MAX_FILESIZE,
194	'version' => '0.1.13',
195	'backup_prefix' => '-updraft-pre-smush-original.'
196	);
197	}
198	}
199	endif;
200