Current path: home/webdevt/www/wdp/wp-content/plugins/jetpack-boost/app/lib/minify/
?? Go up: /home/webdevt/www/wdp/wp-content/plugins/jetpack-boost/app/lib
<?php
use Automattic\Jetpack_Boost\Lib\Minify;
use Automattic\Jetpack_Boost\Lib\Minify\Config;
use Automattic\Jetpack_Boost\Lib\Minify\Dependency_Path_Mapping;
use Automattic\Jetpack_Boost\Lib\Minify\File_Paths;
use Automattic\Jetpack_Boost\Lib\Minify\Utils;
function jetpack_boost_page_optimize_types() {
return array(
'css' => 'text/css',
'js' => 'application/javascript',
);
}
/**
* Handle serving a minified / concatenated file from the virtual _jb_static dir.
*
* @return never
*/
function jetpack_boost_page_optimize_service_request() {
$use_wp = defined( 'JETPACK_BOOST_CONCAT_USE_WP' ) && JETPACK_BOOST_CONCAT_USE_WP;
$utils = new Utils( $use_wp );
// We handle the cache here, tell other caches not to.
if ( ! defined( 'DONOTCACHEPAGE' ) ) {
define( 'DONOTCACHEPAGE', true );
}
$use_cache = Config::can_use_cache();
$cache_file = '';
$cache_file_meta = '';
if ( $use_cache ) {
$cache_dir = Config::get_legacy_cache_dir_path();
// phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized, WordPress.Security.ValidatedSanitizedInput.MissingUnslash
$request_uri = isset( $_SERVER['REQUEST_URI'] ) ? $utils->unslash( $_SERVER['REQUEST_URI'] ) : '';
$request_uri_hash = md5( $request_uri );
$cache_file = $cache_dir . "/page-optimize-cache-$request_uri_hash";
$cache_file_meta = $cache_dir . "/page-optimize-cache-meta-$request_uri_hash";
// Serve an existing file.
if ( file_exists( $cache_file ) ) {
if ( isset( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
// phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized, WordPress.Security.ValidatedSanitizedInput.MissingUnslash
if ( strtotime( $utils->unslash( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) < filemtime( $cache_file ) ) {
header( 'HTTP/1.1 304 Not Modified' );
exit( 0 );
}
}
if ( file_exists( $cache_file_meta ) ) {
// phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents
$meta = json_decode( file_get_contents( $cache_file_meta ), true );
if ( ! empty( $meta ) && ! empty( $meta['headers'] ) ) {
foreach ( $meta['headers'] as $header ) {
header( $header );
}
}
}
// phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents
$etag = '"' . md5( file_get_contents( $cache_file ) ) . '"';
// Check if we're on Atomic and take advantage of the Atomic Edge Cache.
if ( defined( 'ATOMIC_CLIENT_ID' ) ) {
header( 'A8c-Edge-Cache: cache' );
}
header( 'X-Page-Optimize: cached' );
header( 'Cache-Control: max-age=' . 31536000 );
header( 'ETag: ' . $etag );
echo file_get_contents( $cache_file ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped, WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- We need to trust this unfortunately.
die( 0 );
}
}
// Existing file not available; generate new content.
$output = jetpack_boost_page_optimize_build_output();
$content = $output['content'];
$headers = $output['headers'];
foreach ( $headers as $header ) {
header( $header );
}
// Check if we're on Atomic and take advantage of the Atomic Edge Cache.
if ( defined( 'ATOMIC_CLIENT_ID' ) ) {
header( 'A8c-Edge-Cache: cache' );
}
header( 'X-Page-Optimize: uncached' );
header( 'Cache-Control: max-age=' . 31536000 );
header( 'ETag: "' . md5( $content ) . '"' );
echo $content; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- We need to trust this unfortunately.
// Cache the generated data, if available.
if ( $use_cache ) {
// phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_file_put_contents
file_put_contents( $cache_file, $content );
// phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_file_put_contents
file_put_contents( $cache_file_meta, wp_json_encode( array( 'headers' => $headers ) ) );
}
die( 0 );
}
/**
* Strip matching parent paths off a string. Returns $path without $parent_path.
*/
function jetpack_boost_strip_parent_path( $parent_path, $path ) {
$trimmed_parent = ltrim( $parent_path, '/' );
$trimmed_path = ltrim( $path, '/' );
if ( substr( $trimmed_path, 0, strlen( $trimmed_parent ) ) === $trimmed_parent ) {
$trimmed_path = substr( $trimmed_path, strlen( $trimmed_parent ) );
}
return str_starts_with( $trimmed_path, '/' ) ? $trimmed_path : '/' . $trimmed_path;
}
/**
* Generate a combined and minified output for the current request. This is run regardless of the
* type of content being fetched; JavaScript or CSS, so it must handle either.
*/
function jetpack_boost_page_optimize_build_output() {
$use_wp = defined( 'JETPACK_BOOST_CONCAT_USE_WP' ) && JETPACK_BOOST_CONCAT_USE_WP;
$utils = new Utils( $use_wp );
$jetpack_boost_page_optimize_types = jetpack_boost_page_optimize_types();
// Config
$concat_max_files = 150;
$concat_unique = true;
// Main
// phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized, WordPress.Security.ValidatedSanitizedInput.MissingUnslash
$method = isset( $_SERVER['REQUEST_METHOD'] ) ? $utils->unslash( $_SERVER['REQUEST_METHOD'] ) : 'GET';
if ( ! in_array( $method, array( 'GET', 'HEAD' ), true ) ) {
jetpack_boost_page_optimize_status_exit( 400 );
}
// Ensure the path follows one of these forms:
// /_jb_static/??/foo/bar.css,/foo1/bar/baz.css?m=293847g
// -- or --
// /_jb_static/??-eJzTT8vP109KLNJLLi7W0QdyDEE8IK4CiVjn2hpZGluYmKcDABRMDPM=
// phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized, WordPress.Security.ValidatedSanitizedInput.MissingUnslash
$request_uri = isset( $_SERVER['REQUEST_URI'] ) ? $utils->unslash( $_SERVER['REQUEST_URI'] ) : '';
$args = $utils->parse_url( $request_uri, PHP_URL_QUERY );
if ( ! $args || ! str_contains( $args, '?' ) ) {
jetpack_boost_page_optimize_status_exit( 400 );
}
$args = substr( $args, strpos( $args, '?' ) + 1 );
$args = jetpack_boost_page_optimize_get_file_paths( $args );
// args contain something like array( '/foo/bar.css', '/foo1/bar/baz.css' )
if ( 0 === count( $args ) || count( $args ) > $concat_max_files ) {
jetpack_boost_page_optimize_status_exit( 400 );
}
// If we're in a subdirectory context, use that as the root.
// We can't assume that the root serves the same content as the subdir.
$subdir_path_prefix = '';
$request_path = $utils->parse_url( $request_uri, PHP_URL_PATH );
$_static_index = strpos( $request_path, jetpack_boost_get_static_prefix() );
if ( $_static_index > 0 ) {
$subdir_path_prefix = substr( $request_path, 0, $_static_index );
}
unset( $request_path, $_static_index );
$last_modified = 0;
$pre_output = '';
$output = '';
foreach ( $args as $uri ) {
$fullpath = jetpack_boost_page_optimize_get_path( $uri );
if ( ! file_exists( $fullpath ) ) {
jetpack_boost_page_optimize_status_exit( 404 );
}
$mime_type = jetpack_boost_page_optimize_get_mime_type( $fullpath );
if ( ! in_array( $mime_type, $jetpack_boost_page_optimize_types, true ) ) {
jetpack_boost_page_optimize_status_exit( 400 );
}
if ( $concat_unique ) {
if ( ! isset( $last_mime_type ) ) {
$last_mime_type = $mime_type;
}
if ( $last_mime_type !== $mime_type ) {
jetpack_boost_page_optimize_status_exit( 400 );
}
}
$stat = stat( $fullpath );
if ( false === $stat ) {
jetpack_boost_page_optimize_status_exit( 500 );
}
if ( $stat['mtime'] > $last_modified ) {
$last_modified = $stat['mtime'];
}
// phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents
$buf = file_get_contents( $fullpath );
if ( false === $buf ) {
jetpack_boost_page_optimize_status_exit( 500 );
}
if ( 'text/css' === $mime_type ) {
$dirpath = jetpack_boost_strip_parent_path( $subdir_path_prefix, dirname( $uri ) );
// url(relative/path/to/file) -> url(/absolute/and/not/relative/path/to/file)
$buf = jetpack_boost_page_optimize_relative_path_replace( $buf, $dirpath );
// phpcs:ignore Squiz.PHP.CommentedOutCode.Found
// This regex changes things like AlphaImageLoader(...src='relative/path/to/file'...) to AlphaImageLoader(...src='/absolute/path/to/file'...)
$buf = preg_replace(
'/(Microsoft.AlphaImageLoader\s*\([^\)]*src=(?:\'|")?)([^\/\'"\s\)](?:(?<!http:|https:).)*)\)/isU',
'$1' . ( $dirpath === '/' ? '/' : $dirpath . '/' ) . '$2)',
$buf
);
// The @charset rules must be on top of the output
if ( str_starts_with( $buf, '@charset' ) ) {
$buf = preg_replace_callback(
'/(?P<charset_rule>@charset\s+[\'"][^\'"]+[\'"];)/i',
function ( $match ) use ( &$pre_output ) {
if ( str_starts_with( $pre_output, '@charset' ) ) {
return '';
}
$pre_output = $match[0] . "\n" . $pre_output;
return '';
},
$buf
);
}
// Move the @import rules on top of the concatenated output.
// Only @charset rule are allowed before them.
if ( str_contains( $buf, '@import' ) ) {
$buf = preg_replace_callback(
'/(?P<pre_path>@import\s+(?:url\s*\()?[\'"\s]*)(?P<path>[^\'"\s](?:https?:\/\/.+\/?)?.+?)(?P<post_path>[\'"\s\)]*;)/i',
function ( $match ) use ( $dirpath, &$pre_output ) {
if ( ! str_starts_with( $match['path'], 'http' ) && '/' !== $match['path'][0] ) {
$pre_output .= $match['pre_path'] . ( $dirpath === '/' ? '/' : $dirpath . '/' ) .
$match['path'] . $match['post_path'] . "\n";
} else {
$pre_output .= $match[0] . "\n";
}
return '';
},
$buf
);
}
// If filename indicates it's already minified, don't minify it again.
if ( ! preg_match( '/\.min\.css$/', $fullpath ) ) {
// Minify CSS.
$buf = Minify::css( $buf );
}
$output .= "$buf";
} else {
// If filename indicates it's already minified, don't minify it again.
if ( ! preg_match( '/\.min\.js$/', $fullpath ) ) {
// Minify JS
$buf = Minify::js( $buf );
}
$output .= "$buf;\n";
}
}
// Don't let trailing whitespace ruin everyone's day. Seems to get stripped by batcache
// resulting in ns_error_net_partial_transfer errors.
$output = rtrim( $output );
$headers = array(
'Last-Modified: ' . gmdate( 'D, d M Y H:i:s', $last_modified ) . ' GMT',
"Content-Type: $mime_type",
);
return array(
'headers' => $headers,
'content' => $pre_output . $output,
);
}
function jetpack_boost_page_optimize_get_file_paths( $args ) {
$paths = File_Paths::get( $args );
if ( $paths ) {
$args = $paths->get_paths();
} else {
// Kept for backward compatibility in case cached page is still referring to old formal asset URLs.
// It's a base64 encoded list of file path.
// e.g.: /_jb_static/??-eJzTT8vP109KLNJLLi7W0QdyDEE8IK4CiVjn2hpZGluYmKcDABRMDPM=
if ( '-' === $args[0] ) {
// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged,WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode
$args = @gzuncompress( base64_decode( substr( $args, 1 ) ) );
}
// It's an unencoded comma separated list of file paths.
// /foo/bar.css,/foo1/bar/baz.css?m=293847g
$version_string_pos = strpos( $args, '?' );
if ( false !== $version_string_pos ) {
$args = substr( $args, 0, $version_string_pos );
}
// /foo/bar.css,/foo1/bar/baz.css
$args = explode( ',', $args );
}
if ( ! is_array( $args ) ) {
// Invalid data, abort!
jetpack_boost_page_optimize_status_exit( 400 );
}
return $args;
}
/**
* Exit with a given HTTP status code.
*
* @param int $status HTTP status code.
*
* @return never
*/
function jetpack_boost_page_optimize_status_exit( $status ) {
http_response_code( $status );
exit( 0 ); // This is a workaround, until a bug in phan is fixed - https://github.com/phan/phan/issues/4888
}
function jetpack_boost_page_optimize_get_mime_type( $file ) {
$jetpack_boost_page_optimize_types = jetpack_boost_page_optimize_types();
$lastdot_pos = strrpos( $file, '.' );
if ( false === $lastdot_pos ) {
return false;
}
$ext = substr( $file, $lastdot_pos + 1 );
if ( ! isset( $jetpack_boost_page_optimize_types[ $ext ] ) ) {
return false;
}
return $jetpack_boost_page_optimize_types[ $ext ];
}
function jetpack_boost_page_optimize_relative_path_replace( $buf, $dirpath ) {
// url(relative/path/to/file) -> url(/absolute/and/not/relative/path/to/file)
$buf = preg_replace(
'/(:?\s*url\s*\()\s*(?:\'|")?\s*([^\/\'"\s\)](?:(?<!data:|http:|https:|[\(\'"]#|%23).)*)[\'"\s]*\)/isU',
'$1' . ( $dirpath === '/' ? '/' : $dirpath . '/' ) . '$2)',
$buf
);
return $buf;
}
function jetpack_boost_page_optimize_get_path( $uri ) {
static $dependency_path_mapping;
if ( ! strlen( $uri ) ) {
jetpack_boost_page_optimize_status_exit( 400 );
}
if ( str_contains( $uri, '..' ) || str_contains( $uri, "\0" ) ) {
jetpack_boost_page_optimize_status_exit( 400 );
}
if ( defined( 'PAGE_OPTIMIZE_CONCAT_BASE_DIR' ) ) {
$path = realpath( PAGE_OPTIMIZE_CONCAT_BASE_DIR . "/$uri" );
if ( false === $path ) {
$path = realpath( Config::get_abspath() . "/$uri" );
}
} else {
if ( empty( $dependency_path_mapping ) ) {
$dependency_path_mapping = new Dependency_Path_Mapping();
}
$path = $dependency_path_mapping->uri_path_to_fs_path( $uri );
}
if ( false === $path ) {
jetpack_boost_page_optimize_status_exit( 404 );
}
return $path;
}