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<?php |
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/** |
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* Server / SAPI detection. |
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* |
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* Used by Gzip and the UI to decide which optimizations are server-applied |
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* (Apache / LiteSpeed via .htaccess) vs. require manual config (nginx). |
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* |
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* @package XSpeed |
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*/ |
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|
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namespace XSpeed; |
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|
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defined( 'ABSPATH' ) || exit; |
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|
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class Server { |
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|
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const APACHE = 'apache'; |
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const LITESPEED = 'litespeed'; |
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const NGINX = 'nginx'; |
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const IIS = 'iis'; |
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const UNKNOWN = 'unknown'; |
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|
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public static function type() { |
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global $is_apache, $is_nginx, $is_IIS, $is_iis7; |
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|
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$signature = self::server_signature(); |
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|
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if ( false !== stripos( $signature, 'litespeed' ) ) { |
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return self::LITESPEED; |
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} |
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if ( ! empty( $is_apache ) || function_exists( 'apache_get_modules' ) || false !== stripos( $signature, 'apache' ) ) { |
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return self::APACHE; |
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} |
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if ( ! empty( $is_nginx ) || false !== stripos( $signature, 'nginx' ) ) { |
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return self::NGINX; |
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} |
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if ( ! empty( $is_IIS ) || ! empty( $is_iis7 ) || false !== stripos( $signature, 'microsoft-iis' ) ) { |
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return self::IIS; |
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} |
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|
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// Fallback: presence of .htaccess implies an Apache-compatible host. |
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if ( file_exists( ABSPATH . '.htaccess' ) ) { |
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return self::APACHE; |
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} |
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|
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return self::UNKNOWN; |
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} |
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|
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/** |
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* Whether the server respects .htaccess / web.config-style file-based config. |
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*/ |
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public static function supports_htaccess() { |
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$t = self::type(); |
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return self::APACHE === $t || self::LITESPEED === $t; |
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} |
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|
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/** |
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* GZIP support category for the UI: |
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* 'auto' — toggling writes server config (Apache / LiteSpeed) |
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* 'manual' — must be configured outside the plugin (nginx, IIS, unknown) |
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*/ |
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public static function gzip_mode() { |
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return self::supports_htaccess() ? 'auto' : 'manual'; |
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} |
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|
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private static function server_signature() { |
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return isset( $_SERVER['SERVER_SOFTWARE'] ) |
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? sanitize_text_field( wp_unslash( $_SERVER['SERVER_SOFTWARE'] ) ) |
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: ''; |
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} |
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} |
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|
