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<?php |
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|
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namespace WP_Defender\Component\Security_Tweaks\Servers; |
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|
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class Server { |
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public static function create( $server ) { |
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return new Server_Factory( $server ); |
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} |
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|
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/** |
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* @param string $default_server_name |
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* |
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* @return string |
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*/ |
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public static function get_software_by_self_ping( $default_server_name = 'apache' ) { |
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$request = wp_remote_head( |
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home_url(), |
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array( |
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'user-agent' => ! empty( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT'] : 'Defender Self Ping', |
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// Most hosts don't really have valid ssl or ssl still pending. |
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'sslverify' => apply_filters( 'defender_ssl_verify', true ), |
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) |
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); |
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$server = wp_remote_retrieve_header( $request, 'server' ); |
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$server = explode( '/', $server ); |
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|
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if ( isset( $server[0] ) ) { |
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$server = strtolower( $server[0] ); |
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} else { |
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$server = $default_server_name; |
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} |
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|
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return $server; |
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} |
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|
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/** |
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* @return string |
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*/ |
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public static function get_software() { |
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if ( empty( $_SERVER['SERVER_SOFTWARE'] ) ) { |
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return self::get_software_by_self_ping(); |
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} |
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|
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$server = explode( ' ', $_SERVER['SERVER_SOFTWARE'] ); |
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$server = explode( '/', reset( $server ) ); |
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if ( isset( $server[0] ) ) { |
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return strtolower( $server[0] ); |
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} else { |
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return self::get_software_by_self_ping(); |
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} |
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} |
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|
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/** |
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* Determine the server. |
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* |
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* @return string |
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*/ |
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public static function get_current_server() { |
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$url = home_url(); |
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$server_type = get_site_transient( 'defender_current_server' ); |
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|
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if ( ! is_array( $server_type ) ) { |
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$server_type = array(); |
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} |
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|
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if ( isset( $server_type[ $url ] ) && ! empty( $server_type[ $url ] ) ) { |
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return strtolower( $server_type[ $url ] ); |
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} |
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|
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// Url should end with php. |
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global $is_apache, $is_nginx, $is_IIS, $is_iis7; |
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|
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if ( $is_nginx ) { |
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$server = 'nginx'; |
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} elseif ( $is_apache ) { |
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// Case the url is detecting php file. |
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if ( 'php' === pathinfo( $url, PATHINFO_EXTENSION ) ) { |
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$server = 'apache'; |
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} else { |
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$server = self::get_software(); |
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} |
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} elseif ( $is_iis7 || $is_IIS ) { |
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$server = 'iis-7'; |
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} else { |
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$server = self::get_software(); |
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} |
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|
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$server_type[ $url ] = $server; |
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set_site_transient( 'defender_current_server', $server_type, 3600 ); |
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|
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return $server; |
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} |
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|
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/** |
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* Check whether ping test failed or not. |
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* |
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* @param string $url |
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* |
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* @return bool |
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*/ |
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public static function ping_test_failed( $url ) { |
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$response = wp_remote_post( $url, array( 'user-agent' => 'WP Defender Self Ping Test' ) ); |
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|
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if ( is_wp_error( $response ) ) { |
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return true; |
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} |
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|
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return 200 !== wp_remote_retrieve_response_code( $response ); |
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} |
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} |
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|
