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<?php
namespace WP_Rocket\Engine\Optimization\QueryString;
use WP_Rocket\Admin\Options_Data;
use WP_Rocket\deprecated\DeprecatedClassTrait;
use WP_Rocket\Engine\Optimization\AbstractOptimization;
use WP_Rocket\Engine\Optimization\CSSTrait;
/**
* Remove query string from static resources.
*
* @since 3.1
* @since 3.6 Deprecated.
* @author Remy Perona
* @deprecated
*/
class Remove extends AbstractOptimization {
use DeprecatedClassTrait;
use CSSTrait;
/**
* Plugin options instance.
*
* @since 3.1
* @author Remy Perona
*
* @var Options_Data
*/
protected $options;
/**
* Cache busting base path
*
* @since 3.1
* @author Remy Perona
*
* @var string
*/
protected $busting_path;
/**
* Cache busting base URL
*
* @since 3.1
* @author Remy Perona
*
* @var string
*/
protected $busting_url;
/**
* Excluded files from optimization
*
* @since 3.1
* @author Remy Perona
*
* @var string
*/
protected $excluded_files;
/**
* Constructor
*
* @since 3.1
* @author Remy Perona
*
* @param Options_Data $options Plugin options instance.
* @param string $busting_path Base cache busting files path.
* @param string $busting_url Base cache busting files URL.
*/
public function __construct( Options_Data $options, $busting_path, $busting_url ) {
self::deprecated_class( '3.6' );
$this->options = $options;
$this->busting_path = $busting_path . get_current_blog_id() . '/';
$this->busting_url = $busting_url . get_current_blog_id() . '/';
}
/**
* Returns a regex-ready string with the excluded filepaths for the Remove Query Strings option
*
* @since 3.3.3
* @author Remy Perona
*
* @return string
*/
protected function get_excluded_files() {
static $excluded_files;
if ( isset( $excluded_files ) ) {
return $excluded_files;
}
/**
* Filters files to exclude from cache busting
*
* @since 2.9.3
* @author Remy Perona
*
* @param array $excluded_files An array of filepath to exclude.
*/
$excluded_files = apply_filters( 'rocket_exclude_cache_busting', [] );
if ( empty( $excluded_files ) ) {
$excluded_files = '';
return $excluded_files;
}
foreach ( $excluded_files as $i => $excluded_file ) {
// Escape character for future use in regex pattern.
$excluded_files[ $i ] = str_replace( '#', '\#', $excluded_file );
}
$excluded_files = implode( '|', $excluded_files );
return $excluded_files;
}
/**
* Remove query strings for CSS files that have one
*
* @since 3.1
* @author Remy Perona
*
* @param string $html HTML content.
* @return string
*/
public function remove_query_strings_css( $html ) {
$html_nocomments = preg_replace( '/<!--(.*)-->/Uis', '', $html );
$styles = $this->find( '<link\s+([^>]+[\s\'"])?href\s*=\s*[\'"]\s*?([^\'"]+\.css(?:\?[^\'"]*)?)\s*?[\'"]([^>]+)?\/?>', $html_nocomments );
if ( ! $styles ) {
return $html;
}
foreach ( $styles as $style ) {
$url = $style[2];
$url = $this->can_replace( $url );
if ( ! $url ) {
continue;
}
$optimized_url = $this->replace_url( $url, 'css' );
if ( ! $optimized_url ) {
continue;
}
$replace_style = str_replace( $style[2], $optimized_url, $style[0] );
$html = str_replace( $style[0], $replace_style, $html );
}
return $html;
}
/**
* Remove query strings for JS files that have one
*
* @since 3.1
* @author Remy Perona
*
* @param string $html HTML content.
* @return string
*/
public function remove_query_strings_js( $html ) {
$html_nocomments = $this->hide_comments( $html );
$scripts = $this->find( '<script\s+([^>]+[\s\'"])?src\s*=\s*[\'"]\s*?([^\'"]+\.js(?:\?[^\'"]*)?)\s*?[\'"]([^>]+)?\/?>', $html_nocomments );
if ( ! $scripts ) {
return $html;
}
foreach ( $scripts as $script ) {
$url = $script[2];
$url = $this->can_replace( $url );
if ( ! $url ) {
continue;
}
$optimized_url = $this->replace_url( $url, 'js' );
if ( ! $optimized_url ) {
continue;
}
$replace_script = str_replace( $script[2], $optimized_url, $script[0] );
$html = str_replace( $script[0], $replace_script, $html );
}
return $html;
}
/**
* Gets the CDN zones.
*
* @since 3.1
* @author Remy Perona
*
* @return array
*/
public function get_zones() {
return [ 'all', 'css_and_js', 'css', 'js' ];
}
/**
* Determines if we can optimize
*
* @since 3.1
* @author Remy Perona
*
* @return boolean
*/
public function is_allowed() {
if ( rocket_get_constant( 'DONOTROCKETOPTIMIZE' ) ) {
return false;
}
if ( ! $this->options->get( 'remove_query_strings' ) ) {
return false;
}
return true;
}
/**
* Determines if we can perform the remove query string on that URL
*
* @since 3.1
* @author Remy Perona
*
* @param string $url source URL.
* @return bool\string
*/
protected function can_replace( $url ) {
$parsed_url = get_rocket_parse_url( $url );
if ( empty( $parsed_url['query'] ) ) {
return false;
}
$version = get_bloginfo( 'version' );
if ( false !== strpos( $url, 'ver=' . $version ) ) {
$url = rtrim( str_replace( [ 'ver=' . $version, '?&', '&&' ], [ '', '?', '&' ], $url ), '?&' );
}
if ( $this->is_external_file( $url ) ) {
return false;
}
if ( $this->is_excluded( $url ) ) {
return false;
}
return $url;
}
/**
* Determines if the URL is excluded
*
* @since 3.1
* @author Remy Perona
*
* @param string $url source URL.
* @return bool
*/
protected function is_excluded( $url ) {
$excluded_files = $this->get_excluded_files();
if ( ! empty( $excluded_files ) && preg_match( '#^' . $excluded_files . '$#', rocket_clean_exclude_file( $url ) ) ) {
return true;
}
return false;
}
/**
* Replaces the original URL with the cache busting URL
*
* @since 3.1
* @author Remy Perona
*
* @param string $url source URL.
* @param string $extension file extension.
* @return bool|string
*/
protected function replace_url( $url, $extension ) {
$query = wp_parse_url( $url, PHP_URL_QUERY );
if ( empty( $query ) ) {
return $url;
}
// This filter is documented in /inc/classes/optimization/class-abstract-optimization.php.
$internal_url = apply_filters( 'rocket_asset_url', $url, $this->get_zones() );
$parsed_url = get_rocket_parse_url( $internal_url );
$relative_src = ltrim( $parsed_url['path'] . '?' . $parsed_url['query'], '/' );
$filename = preg_replace( '/\.(' . $extension . ')\?(?:timestamp|ver)=([^&]+)(?:.*)/', '-$2.$1', $relative_src );
if ( $relative_src === $filename ) {
return $url;
}
$busting_file = $this->busting_path . $filename;
$busting_url = $this->get_busting_url( $filename, $extension, $url );
if ( rocket_direct_filesystem()->is_readable( $busting_file ) ) {
return $busting_url;
}
$file = $this->get_file_path( $url );
if ( ! $file ) {
return false;
}
$busting_content = $this->get_file_content( $file );
if ( ! $busting_content ) {
return false;
}
if ( 'css' === $extension ) {
$busting_content = $this->rewrite_paths( $file, $busting_file, $busting_content );
}
if ( ! $this->write_file( $busting_content, $busting_file ) ) {
return false;
}
return $busting_url;
}
/**
* Gets the cache busting URL
*
* @since 3.1
* @author Remy Perona
*
* @param string $filename Cache busting filename.
* @param string $extension File extension.
* @param string $original_url Original URL for the file.
* @return string
*/
protected function get_busting_url( $filename, $extension, $original_url ) {
$url = $this->busting_url . $filename;
switch ( $extension ) {
case 'css':
// This filter is documented in inc/classes/optimization/css/class-abstract-css-optimization.php.
$url = apply_filters( 'rocket_css_url', $url, $original_url );
break;
case 'js':
// This filter is documented in inc/classes/optimization/css/class-abstract-js-optimization.php.
$url = apply_filters( 'rocket_js_url', $url, $original_url );
break;
}
return $url;
}
}
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