| 1 |
<?php |
| 2 |
/** |
| 3 |
* Ported from https://github.com/Automattic/nginx-http-concat |
| 4 |
* |
| 5 |
* Concatenation script inspired by Nginx's ngx_http_concat and Apache's modconcat modules. |
| 6 |
* |
| 7 |
* It follows the same pattern for enabling the concatenation. It uses two ?, like this: |
| 8 |
* http://example.com/??style1.css,style2.css,foo/style3.css |
| 9 |
* |
| 10 |
* If a third ? is present it's treated as version string. Like this: |
| 11 |
* http://example.com/??style1.css,style2.css,foo/style3.css?v=102234 |
| 12 |
* |
| 13 |
* It will also replace the relative paths in CSS files with absolute paths. |
| 14 |
* |
| 15 |
* @package PoweredCache |
| 16 |
*/ |
| 17 |
|
| 18 |
namespace PoweredCache\FileOptimizer; |
| 19 |
|
| 20 |
// phpcs:disable |
| 21 |
|
| 22 |
use PoweredCache\Dependencies\MatthiasMullie\Minify\CSS; |
| 23 |
use PoweredCache\Dependencies\MatthiasMullie\Minify\JS; |
| 24 |
|
| 25 |
/** |
| 26 |
* PSR-4-ish autoloading |
| 27 |
* |
| 28 |
* @since 2.0 |
| 29 |
*/ |
| 30 |
spl_autoload_register( |
| 31 |
function ( $class ) { |
| 32 |
// project-specific namespace prefix. |
| 33 |
$prefix = 'PoweredCache\\'; |
| 34 |
|
| 35 |
// base directory for the namespace prefix. |
| 36 |
$base_dir = __DIR__ . '/classes/'; |
| 37 |
|
| 38 |
// does the class use the namespace prefix? |
| 39 |
$len = strlen( $prefix ); |
| 40 |
|
| 41 |
if ( strncmp( $prefix, $class, $len ) !== 0 ) { |
| 42 |
return; |
| 43 |
} |
| 44 |
|
| 45 |
$relative_class = substr( $class, $len ); |
| 46 |
|
| 47 |
$file = $base_dir . str_replace( '\\', '/', $relative_class ) . '.php'; |
| 48 |
|
| 49 |
// if the file exists, require it. |
| 50 |
if ( file_exists( $file ) ) { |
| 51 |
require $file; |
| 52 |
} |
| 53 |
} |
| 54 |
); |
| 55 |
|
| 56 |
/* Config */ |
| 57 |
$concat_max_files = 150; |
| 58 |
$concat_unique = true; |
| 59 |
$concat_types = array( |
| 60 |
'css' => 'text/css', |
| 61 |
'js' => 'application/javascript', |
| 62 |
); |
| 63 |
|
| 64 |
$wp_content_base = '/wp-content'; |
| 65 |
if ( isset( $_SERVER['SCRIPT_NAME'] ) && false === strpos( $_SERVER['SCRIPT_NAME'], '/wp-content' ) ) { |
| 66 |
$script_name = explode( '/', ltrim( $_SERVER['SCRIPT_NAME'], '/' ) ); |
| 67 |
if ( ! empty( $script_name[0] ) ) { |
| 68 |
$wp_content_base = '/' . $script_name[0]; |
| 69 |
} |
| 70 |
} |
| 71 |
|
| 72 |
$current_dir = file_optimizer_normalize_path( realpath( dirname( __DIR__ ) ) ); |
| 73 |
|
| 74 |
/* Constants */ |
| 75 |
// By default determine the document root from this scripts path in the plugins dir (you can hardcode this define) |
| 76 |
define( 'CONCAT_FILES_ROOT', substr( $current_dir, 0, strpos( $current_dir, $wp_content_base ) ) ); |
| 77 |
define( 'POWERED_CACHE_FO_CACHE_DIR', CONCAT_FILES_ROOT . $wp_content_base.'/cache/min/' ); |
| 78 |
define( 'POWERED_CACHE_FO_DEBUG', false ); |
| 79 |
|
| 80 |
if ( ! defined( 'POWERED_CACHE_FO_DISABLE_CACHE_HEADERS' ) ) { |
| 81 |
define( 'POWERED_CACHE_FO_DISABLE_CACHE_HEADERS', false ); |
| 82 |
} |
| 83 |
|
| 84 |
if ( ! file_exists( POWERED_CACHE_FO_CACHE_DIR ) ) { |
| 85 |
mkdir( POWERED_CACHE_FO_CACHE_DIR, 0775, true ); |
| 86 |
} |
| 87 |
|
| 88 |
function concat_http_status_exit( $status ) { |
| 89 |
switch ( $status ) { |
| 90 |
case 200: |
| 91 |
$text = 'OK'; |
| 92 |
break; |
| 93 |
case 400: |
| 94 |
$text = 'Bad Request'; |
| 95 |
break; |
| 96 |
case 403: |
| 97 |
$text = 'Forbidden'; |
| 98 |
break; |
| 99 |
case 404: |
| 100 |
$text = 'Not found'; |
| 101 |
break; |
| 102 |
case 500: |
| 103 |
$text = 'Internal Server Error'; |
| 104 |
break; |
| 105 |
default: |
| 106 |
$text = ''; |
| 107 |
} |
| 108 |
|
| 109 |
$protocol = $_SERVER['SERVER_PROTOCOL']; |
| 110 |
if ( 'HTTP/1.1' != $protocol && 'HTTP/1.0' != $protocol ) { |
| 111 |
$protocol = 'HTTP/1.0'; |
| 112 |
} |
| 113 |
|
| 114 |
@header( "$protocol $status $text", true, $status ); |
| 115 |
exit(); |
| 116 |
} |
| 117 |
|
| 118 |
function concat_get_mtype( $file ) { |
| 119 |
global $concat_types; |
| 120 |
|
| 121 |
$lastdot_pos = strrpos( $file, '.' ); |
| 122 |
if ( false === $lastdot_pos ) { |
| 123 |
return false; |
| 124 |
} |
| 125 |
|
| 126 |
$ext = substr( $file, $lastdot_pos + 1 ); |
| 127 |
|
| 128 |
return isset( $concat_types[ $ext ] ) ? $concat_types[ $ext ] : false; |
| 129 |
} |
| 130 |
|
| 131 |
function concat_get_path( $uri ) { |
| 132 |
if ( ! strlen( $uri ) ) { |
| 133 |
maybe_add_debug_log( sprintf( "File Optimizer 400 - could not retrieve file path for uri %s", $uri ) ); |
| 134 |
concat_http_status_exit( 400 ); |
| 135 |
} |
| 136 |
|
| 137 |
if ( false !== strpos( $uri, '..' ) || false !== strpos( $uri, "\0" ) ) { |
| 138 |
maybe_add_debug_log( sprintf( "File Optimizer 400 - could not retrieve file path for uri %s", $uri ) ); |
| 139 |
concat_http_status_exit( 400 ); |
| 140 |
} |
| 141 |
|
| 142 |
return CONCAT_FILES_ROOT . ( '/' != $uri[0] ? '/' : '' ) . $uri; |
| 143 |
} |
| 144 |
|
| 145 |
function relative_path_replace( $buf, $dirpath ) { |
| 146 |
// url(relative/path/to/file) -> url(/absolute/and/not/relative/path/to/file) |
| 147 |
$buf = preg_replace( |
| 148 |
'/(:?\s*url\s*\()\s*(?:\'|")?\s*([^\/\'"\s\)](?:(?<!data:|http:|https:|[\(\'"]#|%23).)*)[\'"\s]*\)/isU', |
| 149 |
'$1' . ( '/' === $dirpath ? '/' : $dirpath . '/' ) . '$2)', |
| 150 |
$buf |
| 151 |
); |
| 152 |
|
| 153 |
return $buf; |
| 154 |
} |
| 155 |
|
| 156 |
/* Main() */ |
| 157 |
if ( ! in_array( $_SERVER['REQUEST_METHOD'], array( 'GET', 'HEAD' ) ) ) { |
| 158 |
maybe_add_debug_log( sprintf( "File Optimizer 400 - unsupported request method: %s", $_SERVER['REQUEST_METHOD'] ) ); |
| 159 |
concat_http_status_exit( 400 ); |
| 160 |
} |
| 161 |
|
| 162 |
// /_static/??/foo/bar.css,/foo1/bar/baz.css?m=293847g |
| 163 |
// or |
| 164 |
// /_static/??-eJzTT8vP109KLNJLLi7W0QdyDEE8IK4CiVjn2hpZGluYmKcDABRMDPM= |
| 165 |
$args = parse_url( $_SERVER['REQUEST_URI'], PHP_URL_QUERY ); |
| 166 |
if ( ! $args || false === strpos( $args, '?' ) ) { |
| 167 |
maybe_add_debug_log( sprintf( "File Optimizer 400 - empty query arg or not ? exists" ) ); |
| 168 |
concat_http_status_exit( 400 ); |
| 169 |
} |
| 170 |
|
| 171 |
$args = substr( $args, strpos( $args, '?' ) + 1 ); |
| 172 |
$args = str_replace( [ '&minify=1', '&minify=0' ], '', $args ); // remove minify parameter |
| 173 |
|
| 174 |
// /foo/bar.css,/foo1/bar/baz.css?m=293847g |
| 175 |
// or |
| 176 |
// -eJzTT8vP109KLNJLLi7W0QdyDEE8IK4CiVjn2hpZGluYmKcDABRMDPM= |
| 177 |
if ( '-' == $args[0] ) { |
| 178 |
$args = @gzuncompress( base64_decode( substr( $args, 1 ) ) ); |
| 179 |
|
| 180 |
// Invalid data, abort! |
| 181 |
if ( false === $args ) { |
| 182 |
maybe_add_debug_log( sprintf( "File Optimizer 400 - Invalid Data" ) ); |
| 183 |
concat_http_status_exit( 400 ); |
| 184 |
} |
| 185 |
} |
| 186 |
|
| 187 |
// /foo/bar.css,/foo1/bar/baz.css?m=293847g |
| 188 |
$version_string_pos = strpos( $args, '?' ); |
| 189 |
if ( false !== $version_string_pos ) { |
| 190 |
$args = substr( $args, 0, $version_string_pos ); |
| 191 |
} |
| 192 |
|
| 193 |
// /foo/bar.css,/foo1/bar/baz.css |
| 194 |
$args = explode( ',', $args ); |
| 195 |
if ( ! $args ) { |
| 196 |
maybe_add_debug_log( sprintf( "File Optimizer 400 - Empty args" ) ); |
| 197 |
concat_http_status_exit( 400 ); |
| 198 |
} |
| 199 |
|
| 200 |
// array('/wp-content/foo/bar.css','//cdn.cname.com/wp-content/foo/bar.css') |
| 201 |
// get real path when it masked from cdn |
| 202 |
foreach ( $args as $index => $arg ) { |
| 203 |
if ( 0 === stripos( $arg, '//' ) ) { |
| 204 |
$args[ $index ] = parse_url( str_replace( '//', 'http://', $arg ), PHP_URL_PATH ); |
| 205 |
} |
| 206 |
} |
| 207 |
|
| 208 |
// array( '/foo/bar.css', '/foo1/bar/baz.css' ) |
| 209 |
if ( 0 == count( $args ) || count( $args ) > $concat_max_files ) { |
| 210 |
maybe_add_debug_log( sprintf( "File Optimizer 400 - Concatenating too many or zero file: %s files on queue", count( $args ) ) ); |
| 211 |
concat_http_status_exit( 400 ); |
| 212 |
} |
| 213 |
|
| 214 |
// If we're in a subdirectory context, use that as the root. |
| 215 |
// We can't assume that the root serves the same content as the subdir. |
| 216 |
$subdir_path_prefix = ''; |
| 217 |
$request_path = parse_url( $_SERVER['REQUEST_URI'], PHP_URL_PATH ); |
| 218 |
$_static_index = strpos( $request_path, '/_static/' ); |
| 219 |
if ( $_static_index > 0 ) { |
| 220 |
$subdir_path_prefix = substr( $request_path, 0, $_static_index ); |
| 221 |
} |
| 222 |
unset( $request_path, $_static_index ); |
| 223 |
|
| 224 |
$last_modified = 0; |
| 225 |
$pre_output = ''; |
| 226 |
$output = ''; |
| 227 |
|
| 228 |
$do_minify = (bool) stripos( $_SERVER['REQUEST_URI'], 'minify=1' ); |
| 229 |
$hash = sha1( $_SERVER['REQUEST_URI'] ); |
| 230 |
$latest_file = end( $args ); |
| 231 |
|
| 232 |
$cache_file_name = POWERED_CACHE_FO_CACHE_DIR . $hash; |
| 233 |
if ( 'application/javascript' == concat_get_mtype( $latest_file ) ) { |
| 234 |
$cache_file_name .= '.js'; |
| 235 |
} elseif ( 'text/css' == concat_get_mtype( $latest_file ) ) { |
| 236 |
$cache_file_name .= '.css'; |
| 237 |
} |
| 238 |
|
| 239 |
if ( file_exists( $cache_file_name ) ) { |
| 240 |
$buf = @file_get_contents( $cache_file_name ); |
| 241 |
if ( $buf ) { |
| 242 |
$stat = stat( $cache_file_name ); |
| 243 |
|
| 244 |
set_cache_headers(); |
| 245 |
header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s', $stat['mtime'] ) . ' GMT' ); |
| 246 |
header( 'Content-Length: ' . ( strlen( $pre_output ) + strlen( $buf ) ) ); |
| 247 |
header( 'Content-Type: ' . concat_get_mtype( $latest_file ) ); |
| 248 |
|
| 249 |
echo $pre_output . $buf; |
| 250 |
exit; |
| 251 |
} |
| 252 |
} |
| 253 |
|
| 254 |
foreach ( $args as $uri ) { |
| 255 |
|
| 256 |
$fullpath = concat_get_path( $uri ); |
| 257 |
|
| 258 |
if ( ! file_exists( $fullpath ) ) { |
| 259 |
maybe_add_debug_log( sprintf( "File Optimizer 404 - Missing file: %s", $fullpath ) ); |
| 260 |
concat_http_status_exit( 404 ); |
| 261 |
} |
| 262 |
|
| 263 |
$mime_type = concat_get_mtype( $fullpath ); |
| 264 |
if ( ! in_array( $mime_type, $concat_types ) ) { |
| 265 |
maybe_add_debug_log( sprintf( "File Optimizer 400 - Unsupported mime type: %s", $mime_type ) ); |
| 266 |
concat_http_status_exit( 400 ); |
| 267 |
} |
| 268 |
|
| 269 |
if ( $concat_unique ) { |
| 270 |
if ( ! isset( $last_mime_type ) ) { |
| 271 |
$last_mime_type = $mime_type; |
| 272 |
} |
| 273 |
|
| 274 |
if ( $last_mime_type != $mime_type ) { |
| 275 |
maybe_add_debug_log( sprintf( "File Optimizer 400 - Different mime type: last mime %s vs current mime: %s", $last_mime_type, $mime_type ) ); |
| 276 |
concat_http_status_exit( 400 ); |
| 277 |
} |
| 278 |
} |
| 279 |
|
| 280 |
$stat = stat( $fullpath ); |
| 281 |
if ( false === $stat ) { |
| 282 |
maybe_add_debug_log( sprintf( "File Optimizer 500 - false stat" ) ); |
| 283 |
concat_http_status_exit( 500 ); |
| 284 |
} |
| 285 |
|
| 286 |
if ( $stat['mtime'] > $last_modified ) { |
| 287 |
$last_modified = $stat['mtime']; |
| 288 |
} |
| 289 |
|
| 290 |
$buf = file_get_contents( $fullpath ); |
| 291 |
if ( false === $buf ) { |
| 292 |
maybe_add_debug_log( sprintf( "File Optimizer 500 - false buffer" ) ); |
| 293 |
concat_http_status_exit( 500 ); |
| 294 |
} |
| 295 |
|
| 296 |
if ( 'text/css' == $mime_type ) { |
| 297 |
$dirpath = $subdir_path_prefix . dirname( $uri ); |
| 298 |
|
| 299 |
// url(relative/path/to/file) -> url(/absolute/and/not/relative/path/to/file) |
| 300 |
$buf = relative_path_replace( $buf, $dirpath ); |
| 301 |
|
| 302 |
// AlphaImageLoader(...src='relative/path/to/file'...) -> AlphaImageLoader(...src='/absolute/path/to/file'...) |
| 303 |
$buf = preg_replace( |
| 304 |
'/(Microsoft.AlphaImageLoader\s*\([^\)]*src=(?:\'|")?)([^\/\'"\s\)](?:(?<!http:|https:).)*)\)/isU', |
| 305 |
'$1' . ( $dirpath == '/' ? '/' : $dirpath . '/' ) . '$2)', |
| 306 |
$buf |
| 307 |
); |
| 308 |
|
| 309 |
// The @charset rules must be on top of the output |
| 310 |
if ( 0 === strpos( $buf, '@charset' ) ) { |
| 311 |
preg_replace_callback( |
| 312 |
'/(?P<charset_rule>@charset\s+[\'"][^\'"]+[\'"];)/i', |
| 313 |
function ( $match ) { |
| 314 |
global $pre_output; |
| 315 |
|
| 316 |
if ( 0 === strpos( $pre_output, '@charset' ) ) { |
| 317 |
return ''; |
| 318 |
} |
| 319 |
|
| 320 |
$pre_output = $match[0] . "\n" . $pre_output; |
| 321 |
|
| 322 |
return ''; |
| 323 |
}, |
| 324 |
$buf |
| 325 |
); |
| 326 |
} |
| 327 |
|
| 328 |
// Move the @import rules on top of the concatenated output. |
| 329 |
// Only @charset rule are allowed before them. |
| 330 |
if ( false !== strpos( $buf, '@import' ) ) { |
| 331 |
$buf = preg_replace_callback( |
| 332 |
'/(?P<pre_path>@import\s+(?:url\s*\()?[\'"\s]*)(?P<path>[^\'"\s](?:https?:\/\/.+\/?)?.+?)(?P<post_path>[\'"\s\)]*;)/i', |
| 333 |
function ( $match ) use ( $dirpath ) { |
| 334 |
global $pre_output; |
| 335 |
|
| 336 |
if ( 0 !== strpos( $match['path'], 'http' ) && '/' != $match['path'][0] ) { |
| 337 |
$pre_output .= $match['pre_path'] . ( $dirpath == '/' ? '/' : $dirpath . '/' ) . |
| 338 |
$match['path'] . $match['post_path'] . "\n"; |
| 339 |
} else { |
| 340 |
$pre_output .= $match[0] . "\n"; |
| 341 |
} |
| 342 |
|
| 343 |
return ''; |
| 344 |
}, |
| 345 |
$buf |
| 346 |
); |
| 347 |
} |
| 348 |
} |
| 349 |
|
| 350 |
if ( 'application/javascript' == $mime_type ) { |
| 351 |
$output .= "$buf;\n"; |
| 352 |
} else { |
| 353 |
$output .= "$buf"; |
| 354 |
} |
| 355 |
} |
| 356 |
|
| 357 |
if ( $do_minify && false === stripos( $uri, '.min' ) ) { |
| 358 |
if ( 'application/javascript' == $mime_type ) { |
| 359 |
$js_minify = new JS( $output ); |
| 360 |
$output = $js_minify->minify(); |
| 361 |
} elseif ( 'text/css' == $mime_type ) { |
| 362 |
$css_minify = new CSS( $output ); |
| 363 |
$output = $css_minify->minify(); |
| 364 |
} |
| 365 |
} |
| 366 |
|
| 367 |
set_cache_headers(); |
| 368 |
header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s', $last_modified ) . ' GMT' ); |
| 369 |
header( 'Content-Length: ' . ( strlen( $pre_output ) + strlen( $output ) ) ); |
| 370 |
header( "Content-Type: $mime_type" ); |
| 371 |
|
| 372 |
echo $pre_output . $output; |
| 373 |
|
| 374 |
$cache_file_name = POWERED_CACHE_FO_CACHE_DIR . $hash; |
| 375 |
if ( 'application/javascript' == $mime_type ) { |
| 376 |
$cache_file_name .= '.js'; |
| 377 |
} elseif ( 'text/css' == $mime_type ) { |
| 378 |
$cache_file_name .= '.css'; |
| 379 |
} |
| 380 |
|
| 381 |
file_put_contents( $cache_file_name, $pre_output . $output ); |
| 382 |
|
| 383 |
|
| 384 |
/** |
| 385 |
* Normalize a filesystem path. |
| 386 |
* |
| 387 |
* On windows systems, replaces backslashes with forward slashes |
| 388 |
* and forces upper-case drive letters. |
| 389 |
* Allows for two leading slashes for Windows network shares, but |
| 390 |
* ensures that all other duplicate slashes are reduced to a single. |
| 391 |
* |
| 392 |
* @param string $path Path to normalize. |
| 393 |
* |
| 394 |
* @return string Normalized path. |
| 395 |
* @see wp_normalize_path |
| 396 |
* |
| 397 |
*/ |
| 398 |
function file_optimizer_normalize_path( $path ) { |
| 399 |
$wrapper = ''; |
| 400 |
|
| 401 |
// Standardise all paths to use '/'. |
| 402 |
$path = str_replace( '\\', '/', $path ); |
| 403 |
|
| 404 |
// Replace multiple slashes down to a singular, allowing for network shares having two slashes. |
| 405 |
$path = preg_replace( '|(?<=.)/+|', '/', $path ); |
| 406 |
|
| 407 |
// Windows paths should uppercase the drive letter. |
| 408 |
if ( ':' === substr( $path, 1, 1 ) ) { |
| 409 |
$path = ucfirst( $path ); |
| 410 |
} |
| 411 |
|
| 412 |
return $wrapper . $path; |
| 413 |
} |
| 414 |
|
| 415 |
/** |
| 416 |
* Maybe add debug message |
| 417 |
* |
| 418 |
* @param string $message Debug message |
| 419 |
* |
| 420 |
* @since 2.3 |
| 421 |
*/ |
| 422 |
function maybe_add_debug_log( $message ) { |
| 423 |
if ( defined( 'POWERED_CACHE_FO_DEBUG' ) && POWERED_CACHE_FO_DEBUG ) { |
| 424 |
error_log( $message ); |
| 425 |
} |
| 426 |
} |
| 427 |
|
| 428 |
|
| 429 |
/** |
| 430 |
* Add cache headers |
| 431 |
* |
| 432 |
* @return void |
| 433 |
* @since 2.5.3 |
| 434 |
*/ |
| 435 |
function set_cache_headers() { |
| 436 |
if ( defined( 'POWERED_CACHE_FO_DISABLE_CACHE_HEADERS' ) && POWERED_CACHE_FO_DISABLE_CACHE_HEADERS ) { |
| 437 |
return; |
| 438 |
} |
| 439 |
|
| 440 |
$ttl_in_seconds = 31536000; // 365 days |
| 441 |
$ttl = gmdate( "D, d M Y H:i:s", time() + $ttl_in_seconds ) . " GMT"; |
| 442 |
|
| 443 |
header( "Expires: $ttl" ); |
| 444 |
header( "Cache-Control: max-age=$ttl_in_seconds" ); |
| 445 |
} |
| 446 |
|
