fix_folders( $config, $exs ); if ( $config->get_boolean( 'config.check' ) || $force_all_checks ) { if ( $config->get_boolean( 'minify.enabled' ) && Util_Rule::can_check_rules() && $config->get_boolean( 'minify.rewrite' ) ) { $this->rules_core_add( $config, $exs ); } else { $this->rules_core_remove( $exs ); } if ( $config->get_boolean( 'minify.enabled' ) && $config->get_string( 'minify.engine' ) == 'file' ) { $this->rules_cache_add( $config, $exs ); } else { $this->rules_cache_remove( $exs ); } } // if no errors so far - check if rewrite actually works if ( count( $exs->exceptions() ) <= 0 ) { try { if ( $config->get_boolean( 'minify.enabled' ) && $config->get_boolean( 'minify.rewrite' ) && $config->get_boolean( 'minify.debug' ) ) $this->verify_rewrite_working(); } catch ( \Exception $ex ) { $exs->push( $ex ); } if ( $config->get_boolean( 'minify.enabled' ) ) $this->verify_engine_working( $config, $exs ); } if ( count( $exs->exceptions() ) > 0 ) throw $exs; } /** * Fixes environment once event occurs * * @param Config $config * @param string $event * @param null|Config $old_config * @throws Util_Environment_Exceptions */ public function fix_on_event( $config, $event, $old_config = null ) { // Schedules events if ( $config->get_boolean( 'minify.enabled' ) && $config->get_string( 'minify.engine' ) == 'file' ) { if ( $old_config != null && $config->get_integer( 'minify.file.gc' ) != $old_config->get_integer( 'minify.file.gc' ) ) { $this->unschedule(); } if ( !wp_next_scheduled( 'w3_minify_cleanup' ) ) { wp_schedule_event( time(), 'w3_minify_cleanup', 'w3_minify_cleanup' ); } } else { $this->unschedule(); } } /** * Fixes environment after plugin deactivation * * @throws Util_Environment_Exceptions */ public function fix_after_deactivation() { $exs = new Util_Environment_Exceptions(); $this->rules_core_remove( $exs ); $this->rules_cache_remove( $exs ); $this->unschedule(); if ( count( $exs->exceptions() ) > 0 ) throw $exs; } /** * * * @param Config $config * @return array */ function get_required_rules( $config ) { if ( !$config->get_boolean( 'minify.enabled' ) ) return null; $rewrite_rules = array(); if ( $config->get_string( 'minify.engine' ) == 'file' ) { $minify_rules_cache_path = Util_Rule::get_minify_rules_cache_path(); $rewrite_rules[] = array( 'filename' => $minify_rules_cache_path, 'content' => $this->rules_cache_generate( $config ) ); } $minify_rules_core_path = Util_Rule::get_minify_rules_core_path(); $rewrite_rules[] = array( 'filename' => $minify_rules_core_path, 'content' => $this->rules_core_generate( $config ), 'priority' => 1000 ); return $rewrite_rules; } /** * Fixes folders * * @param Config $config * @param Util_Environment_Exceptions $exs */ private function fix_folders( $config, $exs ) { // folder that we delete if exists and not writeable if ( $config->get_boolean( 'minify.enabled' ) && $config->get_string( 'minify.engine' ) == 'file' ) { $dir = W3TC_CACHE_MINIFY_DIR; try{ if ( file_exists( $dir ) && !is_writeable( $dir ) ) Util_WpFile::delete_folder( $dir, '', isset( $_SERVER['REQUEST_URI'] ) ? esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '' ); } catch ( Util_WpFile_FilesystemRmdirException $ex ) { $exs->push( $ex ); } } } /** * Minifiers availability error handling * * @param Config $config * @param Util_Environment_Exceptions $exs */ private function verify_engine_working( $config, $exs ) { $minifiers_errors = array(); if ( $config->get_string( 'minify.js.engine' ) == 'yuijs' ) { $path_java = $config->get_string( 'minify.yuijs.path.java' ); $path_jar = $config->get_string( 'minify.yuijs.path.jar' ); if ( !file_exists( $path_java ) ) { $minifiers_errors[] = sprintf( 'YUI Compressor (JS): JAVA executable path was not found. The default minifier JSMin will be used instead.' ); } elseif ( !file_exists( $path_jar ) ) { $minifiers_errors[] = sprintf( 'YUI Compressor (JS): JAR file path was not found. The default minifier JSMin will be used instead.' ); } } if ( $config->get_string( 'minify.css.engine' ) == 'yuicss' ) { $path_java = $config->get_string( 'minify.yuicss.path.java' ); $path_jar = $config->get_string( 'minify.yuicss.path.jar' ); if ( !file_exists( $path_java ) ) { $minifiers_errors[] = sprintf( 'YUI Compressor (CSS): JAVA executable path was not found. The default CSS minifier will be used instead.' ); } elseif ( !file_exists( $path_jar ) ) { $minifiers_errors[] = sprintf( 'YUI Compressor (CSS): JAR file path was not found. The default CSS minifier will be used instead.' ); } } if ( $config->get_string( 'minify.js.engine' ) == 'ccjs' ) { $path_java = $config->get_string( 'minify.ccjs.path.java' ); $path_jar = $config->get_string( 'minify.ccjs.path.jar' ); if ( !file_exists( $path_java ) ) { $minifiers_errors[] = sprintf( 'Closure Compiler: JAVA executable path was not found. The default minifier JSMin will be used instead.' ); } elseif ( !file_exists( $path_jar ) ) { $minifiers_errors[] = sprintf( 'Closure Compiler: JAR file path was not found. The default minifier JSMin will be used instead.' ); } } if ( count( $minifiers_errors ) ) { $minify_error = 'The following minifiers cannot be found or are no longer working:

This message will automatically disappear once the issue is resolved.'; $exs->push( new Util_Environment_Exception( $minify_error ) ); } } /** * Checks rewrite * * @throws Util_Environment_Exceptions */ private function verify_rewrite_working() { $url = Minify_Core::minified_url( rand() . 'w3tc_rewrite_test.css' ); $result = $this->test_rewrite( $url ); if ( $result != 'ok' ) { $home_url = get_home_url(); $tech_message = ( Util_Environment::is_nginx() ? 'nginx configuration file' : '.htaccess file' ) . ' contains rules to rewrite url ' . $url . '. If handled by ' . 'plugin, it returns "Minify OK" message.
'; $tech_message .= 'The plugin made a request to ' . $url . ' but received:
' . $result . '
'; $tech_message .= 'instead of "Minify OK" response.
'; $error = 'W3 Total Cache error:It appears Minify ' . 'URL ' . 'rewriting is not working. '; if ( Util_Environment::is_nginx() ) { $error .= 'Please verify that all configuration files are ' . 'included in the configuration file ' . '(and that you have reloaded / restarted nginx).'; } else { $error .= 'Please verify that the server configuration ' . 'allows .htaccess'; } $error .= '
Unfortunately minification will ' . 'not function without custom rewrite rules. ' . 'Please ask your server administrator for assistance. ' . 'Also refer to the install page for the rules for your server.'; throw new Util_Environment_Exception( $error, $tech_message ); } } /** * Perform rewrite test * * @param string $url * @return boolean */ private function test_rewrite( $url ) { $key = sprintf( 'w3tc_rewrite_test_%s', substr( md5( $url ), 0, 16 ) ); $result = get_site_transient( $key ); if ( $result != 'ok' ) { $response = Util_Http::get( $url ); $is_ok = ( !is_wp_error( $response ) && $response['response']['code'] == 200 && trim( $response['body'] ) == 'Minify OK' ); if ( $is_ok ) $result = 'ok'; else { if ( is_wp_error( $response ) ) $result = $response->get_error_message(); else { $result = '

' .
						print_r( $response['response'], true ) .
						'
'; } } set_site_transient( $key, $result, 30 ); } return $result; } /** * scheduling stuff */ private function unschedule() { if ( wp_next_scheduled( 'w3_minify_cleanup' ) ) { wp_clear_scheduled_hook( 'w3_minify_cleanup' ); } } /** * rules core modification */ /** * Writes directives to WP .htaccess * * @throws Util_WpFile_FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials */ private function rules_core_add( $config, $exs ) { Util_Rule::add_rules( $exs, Util_Rule::get_minify_rules_core_path(), $this->rules_core_generate( $config ), W3TC_MARKER_BEGIN_MINIFY_CORE, W3TC_MARKER_END_MINIFY_CORE, array( W3TC_MARKER_BEGIN_PGCACHE_CORE => 0, W3TC_MARKER_BEGIN_WORDPRESS => 0, W3TC_MARKER_END_BROWSERCACHE_CACHE => strlen( W3TC_MARKER_END_BROWSERCACHE_CACHE ) + 1, W3TC_MARKER_END_PGCACHE_CACHE => strlen( W3TC_MARKER_END_PGCACHE_CACHE ) + 1, W3TC_MARKER_END_MINIFY_CACHE => strlen( W3TC_MARKER_END_MINIFY_CACHE ) + 1 ) ); } /** * Removes Page Cache core directives * * @param Util_Environment_Exceptions $exs * @throws Util_WpFile_FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials */ private function rules_core_remove( $exs ) { // no need to remove rules for apache - its in cache .htaccess file if ( !Util_Environment::is_nginx() ) return; Util_Rule::remove_rules( $exs, Util_Rule::get_minify_rules_core_path(), W3TC_MARKER_BEGIN_MINIFY_CORE , W3TC_MARKER_END_MINIFY_CORE ); } /** * Generates rules for WP dir * * @param Config $config * @return string */ public function rules_core_generate( $config ) { switch ( true ) { case Util_Environment::is_apache(): case Util_Environment::is_litespeed(): return $this->rules_core_generate_apache( $config ); case Util_Environment::is_nginx(): return $this->rules_core_generate_nginx( $config ); } return ''; } private function site_uri() { $site_uri = rtrim( network_site_url( '', 'relative' ), '/' ) . '/'; /* There is a bug in WP where network_home_url can return * a non-relative URI even though scheme is set to relative. */ if ( Util_Environment::is_url( $site_uri ) ) { $site_uri = parse_url( $site_uri, PHP_URL_PATH ); } return $site_uri; } /** * Generates rules * * @param Config $config * @return string */ function rules_core_generate_apache( $config ) { $cache_uri = Util_Environment::url_to_uri( Util_Environment::filename_to_url( W3TC_CACHE_MINIFY_DIR ) ) . '/'; $site_uri = $this->site_uri(); /* There is a bug in WP where network_home_url can return * a non-relative URI even though scheme is set to relative. */ if ( Util_Environment::is_url( $site_uri ) ) { $site_uri = parse_url( $site_uri, PHP_URL_PATH ); } $engine = $config->get_string( 'minify.engine' ); $browsercache = $config->get_boolean( 'browsercache.enabled' ); $brotli = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.brotli' ) && !defined( 'W3TC_PAGECACHE_OUTPUT_COMPRESSION_OFF' ) ); $compression = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.compression' ) && !defined( 'W3TC_PAGECACHE_OUTPUT_COMPRESSION_OFF' ) ); $rules = ''; $rules .= W3TC_MARKER_BEGIN_MINIFY_CORE . "\n"; $rules .= "\n"; $rules .= " RewriteEngine On\n"; $rules .= " RewriteBase " . $cache_uri . "\n"; if ( $engine == 'file' ) { if ( $brotli ) { $rules .= " RewriteCond %{HTTP:Accept-Encoding} br\n"; $rules .= " RewriteRule .* - [E=APPEND_EXT:_br]\n"; $rules .= " RewriteCond %{REQUEST_FILENAME}%{ENV:APPEND_EXT} -" . ( $config->get_boolean( 'minify.file.nfs' ) ? 'F' : 'f' ) . "\n"; $rules .= " RewriteRule (.*) $1%{ENV:APPEND_EXT} [L]\n"; } if ( $compression ) { $rules .= " RewriteCond %{HTTP:Accept-Encoding} gzip\n"; $rules .= " RewriteRule .* - [E=APPEND_EXT:_gzip]\n"; $rules .= " RewriteCond %{REQUEST_FILENAME}%{ENV:APPEND_EXT} -" . ( $config->get_boolean( 'minify.file.nfs' ) ? 'F' : 'f' ) . "\n"; $rules .= " RewriteRule (.*) $1%{ENV:APPEND_EXT} [L]\n"; } if ( !$brotli && !$compression ) { $rules .= " RewriteCond %{REQUEST_FILENAME} !-f\n"; } } $rules .= " RewriteRule ^(.+\\.(css|js))$ {$site_uri}index.php [L]\n"; $rules .= "\n"; $rules .= W3TC_MARKER_END_MINIFY_CORE . "\n"; return $rules; } /** * Generates rules * * @param Config $config * @return string */ function rules_core_generate_nginx( $config ) { $cache_uri = Util_Environment::url_to_uri( Util_Environment::filename_to_url( W3TC_CACHE_MINIFY_DIR ) ) . '/'; $first_regex_var = '$1'; // for subdir - need to count subdir in url if ( Util_Environment::is_wpmu() && !Util_Environment::is_wpmu_subdomain() ) { // take into accont case when whole subdir wpmu is installed in subdir $home_uri = network_home_url( '', 'relative' ); if ( substr( $cache_uri, 0, strlen( $home_uri ) ) == $home_uri ) $cache_uri = $home_uri . '([a-z0-9]+/)?' . substr( $cache_uri, strlen( $home_uri ) ); else $cache_uri = '(/[a-z0-9]+)?' . $cache_uri; $first_regex_var = '$2'; } $minify_uri = $this->site_uri(); $engine = $config->get_string( 'minify.engine' ); $browsercache = $config->get_boolean( 'browsercache.enabled' ); $brotli = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.brotli' ) && !defined( 'W3TC_PAGECACHE_OUTPUT_COMPRESSION_OFF' ) ); $compression = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.compression' ) && !defined( 'W3TC_PAGECACHE_OUTPUT_COMPRESSION_OFF' ) ); $rules = ''; $rules .= W3TC_MARKER_BEGIN_MINIFY_CORE . "\n"; if ( $engine == 'file' ) { $rules .= "set \$w3tc_enc \"\";\n"; if ( $brotli ) { $rules .= "if (\$http_accept_encoding ~ br) {\n"; $rules .= " set \$w3tc_enc _br;\n"; $rules .= "}\n"; } if ( $compression ) { $rules .= "if (\$http_accept_encoding ~ gzip) {\n"; $rules .= " set \$w3tc_enc _gzip;\n"; $rules .= "}\n"; } $rules .= "if (-f \$request_filename\$w3tc_enc) {\n"; $rules .= " rewrite (.*) $1\$w3tc_enc break;\n"; $rules .= "}\n"; } $rules .= "rewrite ^$cache_uri {$minify_uri}index.php last;\n"; $rules .= W3TC_MARKER_END_MINIFY_CORE . "\n"; return $rules; } /* * cache rules */ /** * Writes directives to file cache .htaccess * Throws exception on error * * @param Config $config * @param Util_Environment_Exceptions $exs */ private function rules_cache_add( $config, $exs ) { Util_Rule::add_rules( $exs, Util_Rule::get_minify_rules_cache_path(), $this->rules_cache_generate( $config ), W3TC_MARKER_BEGIN_MINIFY_CACHE, W3TC_MARKER_END_MINIFY_CACHE, array( W3TC_MARKER_BEGIN_PGCACHE_CACHE => 0, W3TC_MARKER_BEGIN_BROWSERCACHE_CACHE => 0, W3TC_MARKER_BEGIN_MINIFY_CORE => 0, W3TC_MARKER_BEGIN_PGCACHE_CORE => 0, W3TC_MARKER_BEGIN_WORDPRESS => 0 ) ); } /** * Removes Page Cache core directives * * @param Util_Environment_Exceptions $exs * @throws Util_WpFile_FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials */ private function rules_cache_remove( $exs ) { // apache's cache files are not used when core rules disabled if ( !Util_Environment::is_nginx() ) return; Util_Rule::remove_rules( $exs, Util_Rule::get_minify_rules_cache_path(), W3TC_MARKER_BEGIN_MINIFY_CACHE, W3TC_MARKER_END_MINIFY_CACHE ); } /** * Generates directives for file cache dir * * @param Config $config * @return string */ private function rules_cache_generate( $config ) { switch ( true ) { case Util_Environment::is_apache(): case Util_Environment::is_litespeed(): return $this->rules_cache_generate_apache( $config ); case Util_Environment::is_nginx(): return $this->rules_cache_generate_nginx( $config ); } return ''; } /** * Generates directives for file cache dir * * @param Config $config * @return string */ private function rules_cache_generate_apache( $config ) { $browsercache = $config->get_boolean( 'browsercache.enabled' ); $brotli = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.brotli' ) ); $compression = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.compression' ) ); $expires = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.expires' ) ); $lifetime = ( $browsercache ? $config->get_integer( 'browsercache.cssjs.lifetime' ) : 0 ); $cache_control = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.cache.control' ) ); $etag = ( $browsercache && $config->get_integer( 'browsercache.html.etag' ) ); $w3tc = ( $browsercache && $config->get_integer( 'browsercache.cssjs.w3tc' ) ); $compatibility = $config->get_boolean( 'pgcache.compatibility' ); $rules = ''; $rules .= W3TC_MARKER_BEGIN_MINIFY_CACHE . "\n"; // workaround for .gzip if ( $compatibility ) { $rules .= "Options -MultiViews\n"; } if ( $etag ) { $rules .= "FileETag MTime Size\n"; } if ( $brotli ) { $rules .= "\n"; $rules .= " AddType text/css .css_br\n"; $rules .= " AddEncoding br .css_br\n"; $rules .= " AddType application/x-javascript .js_br\n"; $rules .= " AddEncoding br .js_br\n"; $rules .= "\n"; $rules .= "\n"; $rules .= " \n"; $rules .= " SetEnvIfNoCase Request_URI \\.css_br$ no-brotli\n"; $rules .= " SetEnvIfNoCase Request_URI \\.js_br$ no-brotli\n"; $rules .= " \n"; $rules .= "\n"; } if ( $compression ) { $rules .= "\n"; $rules .= " AddType text/css .css_gzip\n"; $rules .= " AddEncoding gzip .css_gzip\n"; $rules .= " AddType application/x-javascript .js_gzip\n"; $rules .= " AddEncoding gzip .js_gzip\n"; $rules .= "\n"; $rules .= "\n"; $rules .= " \n"; $rules .= " SetEnvIfNoCase Request_URI \\.css_gzip$ no-gzip\n"; $rules .= " SetEnvIfNoCase Request_URI \\.js_gzip$ no-gzip\n"; $rules .= " \n"; $rules .= "\n"; } if ( $expires ) { $rules .= "\n"; $rules .= " ExpiresActive On\n"; $rules .= " ExpiresByType text/css A" . $lifetime . "\n"; $rules .= " ExpiresByType application/x-javascript A" . $lifetime . "\n"; $rules .= "\n"; } if ( $w3tc || $brotli || $compression || $cache_control ) { $rules .= "\n"; if ( $w3tc ) { $rules .= " Header set X-Powered-By \"" . Util_Environment::w3tc_header() . "\"\n"; } if ( $brotli || $compression ) { $rules .= " Header set Vary \"Accept-Encoding\"\n"; } if ( $cache_control ) { $cache_policy = $config->get_string( 'browsercache.cssjs.cache.policy' ); switch ( $cache_policy ) { case 'cache': $rules .= " Header set Pragma \"public\"\n"; $rules .= " Header set Cache-Control \"public\"\n"; break; case 'cache_public_maxage': $rules .= " Header set Pragma \"public\"\n"; if ( $expires ) { $rules .= " Header append Cache-Control \"public\"\n"; } else { $rules .= " Header set Cache-Control \"max-age=" . $lifetime . ", public\"\n"; } break; case 'cache_validation': $rules .= " Header set Pragma \"public\"\n"; $rules .= " Header set Cache-Control \"public, must-revalidate, proxy-revalidate\"\n"; break; case 'cache_noproxy': $rules .= " Header set Pragma \"public\"\n"; $rules .= " Header set Cache-Control \"private, must-revalidate\"\n"; break; case 'cache_maxage': $rules .= " Header set Pragma \"public\"\n"; if ( $expires ) { $rules .= " Header append Cache-Control \"public, must-revalidate, proxy-revalidate\"\n"; } else { $rules .= " Header set Cache-Control \"max-age=" . $lifetime . ", public, must-revalidate, proxy-revalidate\"\n"; } break; case 'no_cache': $rules .= " Header set Pragma \"no-cache\"\n"; $rules .= " Header set Cache-Control \"max-age=0, private, no-store, no-cache, must-revalidate\"\n"; break; } } $rules .= "\n"; } $rules .= W3TC_MARKER_END_MINIFY_CACHE . "\n"; return $rules; } /** * Generates directives for file cache dir * * @param Config $config * @return string */ private function rules_cache_generate_nginx( $config ) { $cache_uri = Util_Environment::url_to_uri( Util_Environment::filename_to_url( W3TC_CACHE_MINIFY_DIR ) ) . '/'; $browsercache = $config->get_boolean( 'browsercache.enabled' ); $brotli = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.brotli' ) ); $gzip = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.compression' ) ); $rules = ''; $rules .= W3TC_MARKER_BEGIN_MINIFY_CACHE . "\n"; $common_rules_a = Dispatcher::nginx_rules_for_browsercache_section( $config, 'cssjs', true ); $common_rules_a[] = 'add_header Vary "Accept-Encoding";'; $common_rules = ' ' . implode( "\n ", $common_rules_a ) . "\n"; if ( $brotli ) { $rules .= "location ~ " . $cache_uri . ".*js_br$ {\n"; $rules .= " brotli off;\n"; $rules .= " types {}\n"; $rules .= " default_type application/x-javascript;\n"; $rules .= " add_header Content-Encoding br;\n"; $rules .= $common_rules; $rules .= "}\n"; $rules .= "location ~ " . $cache_uri . ".*css_br$ {\n"; $rules .= " brotli off;\n"; $rules .= " types {}\n"; $rules .= " default_type text/css;\n"; $rules .= " add_header Content-Encoding br;\n"; $rules .= $common_rules; $rules .= "}\n"; } if ( $gzip ) { $rules .= "location ~ " . $cache_uri . ".*js_gzip$ {\n"; $rules .= " gzip off;\n"; $rules .= " types {}\n"; $rules .= " default_type application/x-javascript;\n"; $rules .= " add_header Content-Encoding gzip;\n"; $rules .= $common_rules; $rules .= "}\n"; $rules .= "location ~ " . $cache_uri . ".*css_gzip$ {\n"; $rules .= " gzip off;\n"; $rules .= " types {}\n"; $rules .= " default_type text/css;\n"; $rules .= " add_header Content-Encoding gzip;\n"; $rules .= $common_rules; $rules .= "}\n"; } $rules .= W3TC_MARKER_END_MINIFY_CACHE . "\n"; return $rules; } public function w3tc_browsercache_rules_section( $section_rules, $config, $section ) { if ( Util_Environment::is_litespeed() ) { $o = new Minify_Environment_LiteSpeed( $config ); $section_rules = $o->w3tc_browsercache_rules_section( $section_rules, $section ); } return $section_rules; } }