xspeed / includes / class-server.php

class-server.php in xSpeed Cache: AI-Powered Performance Hub with MCP, Caching & CDN 1.0.1, at includes/class-server.php

149 lines 5.1 KB

Raw Download Zip

1	<?php
2	/**
3	* Server / SAPI detection.
4	*
5	* Used by Gzip and the UI to decide which optimizations are server-applied
6	* (Apache / LiteSpeed via .htaccess) vs. require manual config (nginx).
7	*
8	* @package XSpeed
9	*/
10
11	namespace XSpeed;
12
13	defined( 'ABSPATH' ) \|\| exit;
14
15	class Server {
16
17	const APACHE = 'apache';
18	const LITESPEED = 'litespeed';
19	const NGINX = 'nginx';
20	const IIS = 'iis';
21	const UNKNOWN = 'unknown';
22
23	const OPT_CACHED_TYPE = 'xspeed_server_type';
24
25	public static function type() {
26	$detected = self::detect();
27	if ( self::UNKNOWN !== $detected ) {
28	// Persist whenever we have a real answer so future CLI /
29	// cron / REST calls (where SERVER_SOFTWARE may be empty)
30	// inherit it. Non-autoloaded — only read when needed.
31	$cached = get_option( self::OPT_CACHED_TYPE, null );
32	if ( $cached !== $detected ) {
33	update_option( self::OPT_CACHED_TYPE, $detected, false );
34	}
35	return $detected;
36	}
37
38	// No definitive signal this request (typically WP-CLI, where
39	// SERVER_SOFTWARE is empty). Read whatever was cached the last
40	// time we ran from a real HTTP request.
41	$cached = get_option( self::OPT_CACHED_TYPE, null );
42	if ( is_string( $cached ) && '' !== $cached ) {
43	return $cached;
44	}
45
46	return self::UNKNOWN;
47	}
48
49	/**
50	* Live detection — never reads the cache. Used by type() and by
51	* any caller that explicitly wants the current-request answer
52	* (e.g. diagnostic UI showing "detected this request").
53	*
54	* We DO NOT fall back to "if .htaccess exists assume Apache" here:
55	* Cache::install_rewrite() writes .htaccess itself, so on nginx
56	* hosts the file appears after first cache toggle and a presence
57	* check then flips us to APACHE forever. Cached HTTP detection
58	* is the cleaner backstop.
59	*/
60	public static function detect(): string {
61	global $is_apache, $is_nginx, $is_IIS, $is_iis7;
62
63	$signature = self::server_signature();
64
65	if ( false !== stripos( $signature, 'litespeed' ) ) {
66	return self::LITESPEED;
67	}
68	// apache_get_modules() exists only with mod_php (not FPM), so
69	// gate it behind SERVER_SOFTWARE first. Otherwise an
70	// "apache_get_modules exists" check would false-positive on a
71	// few PHP-builtin-server / mod_php-on-localhost dev edge cases.
72	if ( false !== stripos( $signature, 'apache' ) \|\| ! empty( $is_apache ) ) {
73	return self::APACHE;
74	}
75	if ( false !== stripos( $signature, 'nginx' ) \|\| ! empty( $is_nginx ) ) {
76	return self::NGINX;
77	}
78	if ( false !== stripos( $signature, 'microsoft-iis' ) \|\| ! empty( $is_IIS ) \|\| ! empty( $is_iis7 ) ) {
79	return self::IIS;
80	}
81	return self::UNKNOWN;
82	}
83
84	/**
85	* Whether the server respects .htaccess / web.config-style file-based config.
86	*/
87	public static function supports_htaccess() {
88	$t = self::type();
89	return self::APACHE === $t \|\| self::LITESPEED === $t;
90	}
91
92	/**
93	* GZIP support category for the UI:
94	* 'auto' — toggling writes server config (Apache / LiteSpeed)
95	* 'manual' — must be configured outside the plugin (nginx, IIS, unknown)
96	*/
97	public static function gzip_mode() {
98	return self::supports_htaccess() ? 'auto' : 'manual';
99	}
100
101	private static function server_signature() {
102	return isset( $_SERVER['SERVER_SOFTWARE'] )
103	? sanitize_text_field( wp_unslash( $_SERVER['SERVER_SOFTWARE'] ) )
104	: '';
105	}
106
107	/**
108	* Detect active caching plugins that would conflict with xSpeed. Returns
109	* a list of human-readable labels for any conflicting plugin currently
110	* active; empty array means the field is clear. Used by the onboarding
111	* wizard's Step 1 health check and (Phase 2.1) the main dashboard's
112	* Health card.
113	*
114	* The detection key is the plugin's main file path relative to the
115	* plugins directory — the same value WordPress uses internally in
116	* `active_plugins`. Folder-only checks (`is_plugin_active('foo/')`)
117	* would false-positive on disabled plugins still on disk.
118	*/
119	public static function conflicts() {
120	if ( ! function_exists( 'is_plugin_active' ) ) {
121	require_once ABSPATH . 'wp-admin/includes/plugin.php';
122	}
123
124	$known = array(
125	'wp-rocket/wp-rocket.php' => 'WP Rocket',
126	'w3-total-cache/w3-total-cache.php' => 'W3 Total Cache',
127	'wp-super-cache/wp-cache.php' => 'WP Super Cache',
128	'wp-fastest-cache/wpFastestCache.php' => 'WP Fastest Cache',
129	'litespeed-cache/litespeed-cache.php' => 'LiteSpeed Cache',
130	'cache-enabler/cache-enabler.php' => 'Cache Enabler',
131	'comet-cache/comet-cache.php' => 'Comet Cache',
132	'hummingbird-performance/wp-hummingbird.php' => 'Hummingbird',
133	'sg-cachepress/sg-cachepress.php' => 'SG Optimizer',
134	'breeze/breeze.php' => 'Breeze',
135	'autoptimize/autoptimize.php' => 'Autoptimize',
136	'flying-press/flying-press.php' => 'FlyingPress',
137	'nitropack/main.php' => 'NitroPack',
138	);
139
140	$active = array();
141	foreach ( $known as $file => $label ) {
142	if ( is_plugin_active( $file ) ) {
143	$active[] = $label;
144	}
145	}
146	return $active;
147	}
148	}
149