wp-optimize / includes / class-wp-optimize-http-error-codes-trait.php

class-wp-optimize-http-error-codes-trait.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 4.7.0, at includes/class-wp-optimize-http-error-codes-trait.php

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1	<?php
2	if (!defined('ABSPATH')) die('No direct access allowed');
3
4	if (!trait_exists('WP_Optimize_HTTP_Error_Codes_Trait')) :
5	trait WP_Optimize_HTTP_Error_Codes_Trait {
6
7	/**
8	* List of HTTP semantic codes taken from
9	* https://en.wikipedia.org/wiki/List_of_HTTP_status_codes
10	* This list includes non-default HTTP codes that are not part of RFC 9110 but might appear on the wild
11	*
12	* @var array
13	*/
14	private $http_codes;
15
16	/**
17	* Initialize `$this->http_codes` table
18	*
19	* @return void
20	*/
21	private function set_codes() {
22	$this->http_codes = array(
23	100 => __('Continue', 'wp-optimize'),
24	101 => __('Switching Protocols', 'wp-optimize'),
25	102 => __('Processing (WebDAV; RFC 2518)', 'wp-optimize'),
26	103 => __('Early Hints (RFC 8297)', 'wp-optimize'),
27	200 => __('OK', 'wp-optimize'),
28	201 => __('Created', 'wp-optimize'),
29	202 => __('Accepted', 'wp-optimize'),
30	203 => __('Non-Authoritative Information (since HTTP/1.1)', 'wp-optimize'),
31	204 => __('No Content', 'wp-optimize'),
32	205 => __('Reset Content', 'wp-optimize'),
33	206 => __('Partial Content', 'wp-optimize'),
34	207 => __('Multi-Status (WebDAV; RFC 4918)', 'wp-optimize'),
35	208 => __('Already Reported (WebDAV; RFC 5842)', 'wp-optimize'),
36	226 => __('IM Used (RFC 3229)', 'wp-optimize'),
37	300 => __('Multiple Choices', 'wp-optimize'),
38	301 => __('Moved Permanently', 'wp-optimize'),
39	302 => __('Found (Previously "Moved temporarily")', 'wp-optimize'),
40	303 => __('See Other (since HTTP/1.1)', 'wp-optimize'),
41	304 => __('Not Modified', 'wp-optimize'),
42	305 => __('Use Proxy (since HTTP/1.1)', 'wp-optimize'),
43	306 => __('Switch Proxy', 'wp-optimize'),
44	307 => __('Temporary Redirect (since HTTP/1.1)', 'wp-optimize'),
45	308 => __('Permanent Redirect', 'wp-optimize'),
46	400 => __('Bad Request', 'wp-optimize'),
47	401 => __('Unauthorized', 'wp-optimize'),
48	402 => __('Payment Required', 'wp-optimize'),
49	403 => __('Forbidden', 'wp-optimize'),
50	404 => __('Not Found', 'wp-optimize'),
51	405 => __('Method Not Allowed', 'wp-optimize'),
52	406 => __('Not Acceptable', 'wp-optimize'),
53	407 => __('Proxy Authentication Required', 'wp-optimize'),
54	408 => __('Request Timeout', 'wp-optimize'),
55	409 => __('Conflict', 'wp-optimize'),
56	410 => __('Gone', 'wp-optimize'),
57	411 => __('Length Required', 'wp-optimize'),
58	412 => __('Precondition Failed', 'wp-optimize'),
59	413 => __('Payload Too Large', 'wp-optimize'),
60	414 => __('URI Too Long', 'wp-optimize'),
61	415 => __('Unsupported Media Type', 'wp-optimize'),
62	416 => __('Range Not Satisfiable', 'wp-optimize'),
63	417 => __('Expectation Failed', 'wp-optimize'),
64	418 => __('I\'m a teapot (RFC 2324, RFC 7168)', 'wp-optimize'),
65	421 => __('Misdirected Request', 'wp-optimize'),
66	422 => __('Unprocessable Entity', 'wp-optimize'),
67	423 => __('Locked (WebDAV; RFC 4918)', 'wp-optimize'),
68	424 => __('Failed Dependency (WebDAV; RFC 4918)', 'wp-optimize'),
69	425 => __('Too Early (RFC 8470)', 'wp-optimize'),
70	426 => __('Upgrade Required', 'wp-optimize'),
71	428 => __('Precondition Required (RFC 6585)', 'wp-optimize'),
72	429 => __('Too Many Requests (RFC 6585)', 'wp-optimize'),
73	431 => __('Request Header Fields Too Large (RFC 6585)', 'wp-optimize'),
74	451 => __('Unavailable For Legal Reasons (RFC 7725)', 'wp-optimize'),
75	500 => __('Internal Server Error', 'wp-optimize'),
76	501 => __('Not Implemented', 'wp-optimize'),
77	502 => __('Bad Gateway', 'wp-optimize'),
78	503 => __('Service Unavailable', 'wp-optimize'),
79	504 => __('Gateway Timeout', 'wp-optimize'),
80	505 => __('HTTP Version Not Supported', 'wp-optimize'),
81	506 => __('Variant Also Negotiates (RFC 2295)', 'wp-optimize'),
82	507 => __('Insufficient Storage (WebDAV; RFC 4918)', 'wp-optimize'),
83	508 => __('Loop Detected (WebDAV; RFC 5842)', 'wp-optimize'),
84	510 => __('Not Extended (RFC 2774)', 'wp-optimize'),
85	511 => __('Network Authentication Required (RFC 6585)', 'wp-optimize'),
86	218 => __('This is fine (Apache HTTP Server)', 'wp-optimize'),
87	419 => __('Page Expired (Laravel Framework)', 'wp-optimize'),
88	420 => __('Method Failure (Spring Framework)', 'wp-optimize'),
89	430 => __('Request Header Fields Too Large (Shopify)', 'wp-optimize'),
90	450 => __('Blocked by Windows Parental Controls (Microsoft)', 'wp-optimize'),
91	498 => __('Invalid Token (Esri)', 'wp-optimize'),
92	509 => __('Bandwidth Limit Exceeded (Apache Web Server/cPanel)', 'wp-optimize'),
93	529 => __('Site is overloaded', 'wp-optimize'),
94	530 => __('Site is frozen', 'wp-optimize'),
95	598 => __('(Informal convention) Network read timeout error', 'wp-optimize'),
96	599 => __('Network Connect Timeout Error', 'wp-optimize'),
97	440 => __('IIS - Login Time-out', 'wp-optimize'),
98	449 => __('IIS - Retry With', 'wp-optimize'),
99	444 => __('Nginx - No Response', 'wp-optimize'),
100	494 => __('Nginx - Request header too large', 'wp-optimize'),
101	495 => __('Nginx - SSL Certificate Error', 'wp-optimize'),
102	496 => __('Nginx - SSL Certificate Required', 'wp-optimize'),
103	497 => __('Nginx - HTTP Request Sent to HTTPS Port', 'wp-optimize'),
104	499 => __('Nginx - Client Closed Request', 'wp-optimize'),
105	520 => __('Cloudflare - Web Server Returned an Unknown Error', 'wp-optimize'),
106	521 => __('Cloudflare - Web Server Is Down', 'wp-optimize'),
107	522 => __('Cloudflare - Connection Timed Out', 'wp-optimize'),
108	523 => __('Cloudflare - Origin Is Unreachable', 'wp-optimize'),
109	524 => __('Cloudflare - A Timeout Occurred', 'wp-optimize'),
110	525 => __('Cloudflare - SSL Handshake Failed', 'wp-optimize'),
111	526 => __('Cloudflare - Invalid SSL Certificate', 'wp-optimize'),
112	527 => __('Cloudflare - Railgun Error', 'wp-optimize'),
113	460 => __('AWS Load Balancer - Connection Closed', 'wp-optimize'),
114	463 => __('AWS Load Balancer - Too Many Redirects', 'wp-optimize'),
115	464 => __('AWS Load Balancer - Incompatible Protocols', 'wp-optimize'),
116	561 => __('AWS Load Balancer - Unauthorized', 'wp-optimize'),
117	);
118	}
119
120	/**
121	* Get the current theme's style.css headers
122	*
123	* @return array\|WP_Error
124	*/
125	protected function get_stylesheet_headers() {
126	static $headers;
127	if (isset($headers)) return $headers;
128
129	$style = get_template_directory_uri() . '/style.css';
130
131	/**
132	* Filters wp_remote_get parameters, when checking if browser cache is enabled.
133	*
134	* @param array $request_params Default parameters
135	*/
136	$request_params = apply_filters('wpoptimize_get_stylesheet_headers_args', array('timeout' => 10));
137
138	// trying to load style.css.
139	$response = wp_remote_get($style, $request_params);
140
141	if (is_wp_error($response)) return $response;
142
143	$response_code = wp_remote_retrieve_response_code($response);
144	if (200 !== $response_code) {
145	$link = sprintf('<a href="%s" target="_blank">%s</a>', $style, $style);
146
147	if (401 === $response_code) {
148	$error = '<b>' . esc_html__('401 Unauthorized', 'wp-optimize') . '</b>';
149	// translators: %s is a `401 Unauthorized` error message
150	$error_string = sprintf(esc_html__('The server responded with a %s error.', 'wp-optimize'), $error) . ' '
151	. esc_html__('This usually happens when the site requires authentication to access it.', 'wp-optimize') . ' '
152	// translators: %s is a link to the style.css file
153	. sprintf(esc_html__('Please temporarily disable authentication for the following URL: %s and retry.', 'wp-optimize'), $link);
154	} elseif (404 === $response_code) {
155	$error = '<b>' . esc_html__('404 File Not Found', 'wp-optimize') . '</b>';
156	// translators: %s is a `404 File Not Found` error message
157	$error_string = sprintf(esc_html__('The server responded with a %s error', 'wp-optimize'), $error) . ' '
158	// translators: %s is a link to the style.css file
159	. sprintf(esc_html__('Please temporarily restore the file under URL: %s, or just create an empty file and try again.', 'wp-optimize'), $link);
160	} else {
161	$error = '<b>' . $response_code . ' ' . $this->get_http_code_label($response_code) . '</b>';
162	// translators: %1$s is an HTTP error response code, %2$s is a link to the style.css file
163	$error_string = sprintf(esc_html__('The server responded with a %1$s error whilst trying to open the URL: %2$s.', 'wp-optimize'), $error, $link) . ' '
164	. esc_html__('Please contact your website administrator to resolve this.', 'wp-optimize') . ' ' . esc_html__('Once the issue is addressed, try again.', 'wp-optimize');
165	}
166
167	return new WP_Error('unauthorized', $error_string);
168	}
169
170	$headers = wp_remote_retrieve_headers($response);
171
172	if (is_object($headers) && method_exists($headers, 'getAll')) {
173	$headers = $headers->getAll();
174	}
175
176	return is_array($headers) ? $headers : array();
177	}
178
179	/**
180	* Return label for HTTP code
181	*
182	* @param int $code The HTTP code
183	* @return string
184	*/
185	private function get_http_code_label($code) {
186	if (!isset($this->http_codes)) {
187	$this->set_codes();
188	}
189
190	$message = $this->http_codes[$code] ?? esc_html__("HTTP Code", "wp-optimize");
191
192	return $code . " " . $message;
193	}
194	}
195	endif;
196