| 1 |
<?php |
| 2 |
/** |
| 3 |
* Handles disk-cache-related operations. |
| 4 |
*/ |
| 5 |
|
| 6 |
if ( ! defined( 'ABSPATH' ) ) { |
| 7 |
exit; |
| 8 |
} |
| 9 |
|
| 10 |
class autoptimizeCache |
| 11 |
{ |
| 12 |
/** |
| 13 |
* Cache filename. |
| 14 |
* |
| 15 |
* @var string |
| 16 |
*/ |
| 17 |
private $filename; |
| 18 |
|
| 19 |
/** |
| 20 |
* Cache directory path (with a trailing slash). |
| 21 |
* |
| 22 |
* @var string |
| 23 |
*/ |
| 24 |
private $cachedir; |
| 25 |
|
| 26 |
/** |
| 27 |
* Whether gzipping is done by the web server or us. |
| 28 |
* True => we don't gzip, the web server does it. |
| 29 |
* False => we do it ourselves. |
| 30 |
* |
| 31 |
* @var bool |
| 32 |
*/ |
| 33 |
private $nogzip; |
| 34 |
|
| 35 |
/** |
| 36 |
* Ctor. |
| 37 |
* |
| 38 |
* @param string $md5 Hash. |
| 39 |
* @param string $ext Extension. |
| 40 |
*/ |
| 41 |
public function __construct( $md5, $ext = 'php' ) |
| 42 |
{ |
| 43 |
$_min_ext = ''; |
| 44 |
if ( apply_filters( 'autoptimize_filter_cache_url_add_min_ext', false ) ) { |
| 45 |
$_min_ext = '.min'; |
| 46 |
} |
| 47 |
|
| 48 |
$this->cachedir = AUTOPTIMIZE_CACHE_DIR; |
| 49 |
$this->nogzip = AUTOPTIMIZE_CACHE_NOGZIP; |
| 50 |
if ( ! $this->nogzip ) { |
| 51 |
$this->filename = AUTOPTIMIZE_CACHEFILE_PREFIX . $md5 . $_min_ext . '.php'; |
| 52 |
} else { |
| 53 |
if ( in_array( $ext, array( 'js', 'css' ) ) ) { |
| 54 |
$this->filename = $ext . '/' . AUTOPTIMIZE_CACHEFILE_PREFIX . $md5 . $_min_ext . '.' . $ext; |
| 55 |
} else { |
| 56 |
$this->filename = AUTOPTIMIZE_CACHEFILE_PREFIX . $md5 . $_min_ext . '.' . $ext; |
| 57 |
} |
| 58 |
} |
| 59 |
} |
| 60 |
|
| 61 |
/** |
| 62 |
* Returns true if the cached file exists on disk. |
| 63 |
* |
| 64 |
* @return bool |
| 65 |
*/ |
| 66 |
public function check() |
| 67 |
{ |
| 68 |
return file_exists( $this->cachedir . $this->filename ); |
| 69 |
} |
| 70 |
|
| 71 |
/** |
| 72 |
* Returns cache contents if they exist, false otherwise. |
| 73 |
* |
| 74 |
* @return string|false |
| 75 |
*/ |
| 76 |
public function retrieve() |
| 77 |
{ |
| 78 |
if ( $this->check() ) { |
| 79 |
if ( false == $this->nogzip ) { |
| 80 |
return file_get_contents( $this->cachedir . $this->filename . '.none' ); |
| 81 |
} else { |
| 82 |
return file_get_contents( $this->cachedir . $this->filename ); |
| 83 |
} |
| 84 |
} |
| 85 |
return false; |
| 86 |
} |
| 87 |
|
| 88 |
/** |
| 89 |
* Stores given $data in cache. |
| 90 |
* |
| 91 |
* @param string $data Data to cache. |
| 92 |
* @param string $mime Mimetype. |
| 93 |
* |
| 94 |
* @return void|bool |
| 95 |
*/ |
| 96 |
public function cache( $data, $mime ) |
| 97 |
{ |
| 98 |
// readonly FS explicitly OK'ed by developer, so just pretend all is OK. |
| 99 |
if ( defined( 'AUTOPTIMIZE_CACHE_READONLY' ) ) { |
| 100 |
return true; |
| 101 |
} |
| 102 |
|
| 103 |
// off by default; check if cachedirs exist every time before caching |
| 104 |
// |
| 105 |
// to be activated for users that experience these ugly errors; |
| 106 |
// PHP Warning: file_put_contents failed to open stream: No such file or directory. |
| 107 |
if ( apply_filters( 'autoptimize_filter_cache_checkdirs_on_write', false ) ) { |
| 108 |
$this->check_and_create_dirs(); |
| 109 |
} |
| 110 |
|
| 111 |
if ( false === $this->nogzip ) { |
| 112 |
// We handle gzipping ourselves. |
| 113 |
$file = 'default.php'; |
| 114 |
$phpcode = file_get_contents( AUTOPTIMIZE_PLUGIN_DIR . 'config/' . $file ); |
| 115 |
$phpcode = str_replace( array( '%%CONTENT%%', 'exit;' ), array( $mime, '' ), $phpcode ); |
| 116 |
|
| 117 |
file_put_contents( $this->cachedir . $this->filename, $phpcode ); |
| 118 |
file_put_contents( $this->cachedir . $this->filename . '.none', $data ); |
| 119 |
} else { |
| 120 |
// Write code to cache without doing anything else. |
| 121 |
file_put_contents( $this->cachedir . $this->filename, $data ); |
| 122 |
|
| 123 |
// save fallback .js or .css file if filter true (to be false by default) but not if snippet or single. |
| 124 |
if ( self::do_fallback() && strpos( $this->filename, '_snippet_' ) === false && strpos( $this->filename, '_single_' ) === false ) { |
| 125 |
$_extension = pathinfo( $this->filename, PATHINFO_EXTENSION ); |
| 126 |
$_fallback_file = AUTOPTIMIZE_CACHEFILE_PREFIX . 'fallback.' . $_extension; |
| 127 |
if ( ( 'css' === $_extension || 'js' === $_extension ) && ! file_exists( $this->cachedir . $_extension . '/' . $_fallback_file ) ) { |
| 128 |
file_put_contents( $this->cachedir . $_extension . '/' . $_fallback_file, $data ); |
| 129 |
} |
| 130 |
} |
| 131 |
|
| 132 |
if ( apply_filters( 'autoptimize_filter_cache_create_static_gzip', false ) ) { |
| 133 |
// Create an additional cached gzip file. |
| 134 |
file_put_contents( $this->cachedir . $this->filename . '.gz', gzencode( $data, 9, FORCE_GZIP ) ); |
| 135 |
// If PHP Brotli extension is installed, create an additional cached Brotli file. |
| 136 |
if ( function_exists( 'brotli_compress' ) ) { |
| 137 |
file_put_contents( $this->cachedir . $this->filename . '.br', brotli_compress( $data, 11, BROTLI_GENERIC ) ); |
| 138 |
} |
| 139 |
} |
| 140 |
} |
| 141 |
|
| 142 |
// Provide 3rd party action hook for every cache file that is created. |
| 143 |
// This hook can for example be used to inject a copy of the created cache file to a other domain. |
| 144 |
do_action( 'autoptimize_action_cache_file_created', $this->cachedir . $this->filename ); |
| 145 |
} |
| 146 |
|
| 147 |
/** |
| 148 |
* Get cache filename. |
| 149 |
* |
| 150 |
* @return string |
| 151 |
*/ |
| 152 |
public function getname() |
| 153 |
{ |
| 154 |
// NOTE: This could've maybe been a do_action() instead, however, |
| 155 |
// that ship has sailed. |
| 156 |
// The original idea here was to provide 3rd party code a hook so that |
| 157 |
// it can "listen" to all the complete autoptimized-urls that the page |
| 158 |
// will emit... Or something to that effect I think? |
| 159 |
apply_filters( 'autoptimize_filter_cache_getname', AUTOPTIMIZE_CACHE_URL . $this->filename ); |
| 160 |
|
| 161 |
return $this->filename; |
| 162 |
} |
| 163 |
|
| 164 |
/** |
| 165 |
* Returns true if given `$file` is considered a valid Autoptimize cache file, |
| 166 |
* false otherwise. |
| 167 |
* |
| 168 |
* @param string $dir Directory name (with a trailing slash). |
| 169 |
* @param string $file Filename. |
| 170 |
* @return bool |
| 171 |
*/ |
| 172 |
protected static function is_valid_cache_file( $dir, $file ) |
| 173 |
{ |
| 174 |
if ( '.' !== $file && '..' !== $file && |
| 175 |
false !== strpos( $file, AUTOPTIMIZE_CACHEFILE_PREFIX ) && |
| 176 |
is_file( $dir . $file ) ) { |
| 177 |
|
| 178 |
// It's a valid file! |
| 179 |
return true; |
| 180 |
} |
| 181 |
|
| 182 |
// Everything else is considered invalid! |
| 183 |
return false; |
| 184 |
} |
| 185 |
|
| 186 |
/** |
| 187 |
* Clears contents of AUTOPTIMIZE_CACHE_DIR. |
| 188 |
* |
| 189 |
* @return void |
| 190 |
*/ |
| 191 |
protected static function clear_cache_classic() |
| 192 |
{ |
| 193 |
$contents = self::get_cache_contents(); |
| 194 |
foreach ( $contents as $name => $files ) { |
| 195 |
$dir = rtrim( AUTOPTIMIZE_CACHE_DIR . $name, '/' ) . '/'; |
| 196 |
foreach ( $files as $file ) { |
| 197 |
if ( self::is_valid_cache_file( $dir, $file ) ) { |
| 198 |
@unlink( $dir . $file ); // @codingStandardsIgnoreLine |
| 199 |
} |
| 200 |
} |
| 201 |
} |
| 202 |
|
| 203 |
@unlink( AUTOPTIMIZE_CACHE_DIR . '/.htaccess' ); // @codingStandardsIgnoreLine |
| 204 |
} |
| 205 |
|
| 206 |
/** |
| 207 |
* Recursively deletes the specified pathname (file/directory) if possible. |
| 208 |
* Returns true on success, false otherwise. |
| 209 |
* |
| 210 |
* @param string $pathname Pathname to remove. |
| 211 |
* |
| 212 |
* @return bool |
| 213 |
*/ |
| 214 |
protected static function rmdir( $pathname ) |
| 215 |
{ |
| 216 |
$files = self::get_dir_contents( $pathname ); |
| 217 |
foreach ( $files as $file ) { |
| 218 |
$path = $pathname . '/' . $file; |
| 219 |
if ( is_dir( $path ) ) { |
| 220 |
self::rmdir( $path ); |
| 221 |
} else { |
| 222 |
unlink( $path ); |
| 223 |
} |
| 224 |
} |
| 225 |
|
| 226 |
return rmdir( $pathname ); |
| 227 |
} |
| 228 |
|
| 229 |
/** |
| 230 |
* Clears contents of AUTOPTIMIZE_CACHE_DIR by renaming the current |
| 231 |
* cache directory into a new one with a unique name and then |
| 232 |
* re-creating the default (empty) cache directory. |
| 233 |
* |
| 234 |
* Important/ Fixme: this does not take multisite into account, so |
| 235 |
* if advanced_cache_clear_enabled is true (it is not by default) |
| 236 |
* then the content for all subsites is zapped! |
| 237 |
* |
| 238 |
* @return bool Returns true when everything is done successfully, false otherwise. |
| 239 |
*/ |
| 240 |
protected static function clear_cache_via_rename() |
| 241 |
{ |
| 242 |
$ok = false; |
| 243 |
$dir = self::get_pathname_base(); |
| 244 |
$new_name = self::get_unique_name(); |
| 245 |
|
| 246 |
// Makes sure the new pathname is on the same level... |
| 247 |
$new_pathname = dirname( $dir ) . '/' . $new_name; |
| 248 |
$renamed = @rename( $dir, $new_pathname ); // @codingStandardsIgnoreLine |
| 249 |
|
| 250 |
// When renamed, re-create the default cache directory back so it's |
| 251 |
// available again... |
| 252 |
if ( $renamed ) { |
| 253 |
$ok = self::cacheavail(); |
| 254 |
} |
| 255 |
|
| 256 |
return $ok; |
| 257 |
} |
| 258 |
|
| 259 |
/** |
| 260 |
* Returns true when advanced cache clearing is enabled. |
| 261 |
* |
| 262 |
* @return bool |
| 263 |
*/ |
| 264 |
public static function advanced_cache_clear_enabled() |
| 265 |
{ |
| 266 |
return apply_filters( 'autoptimize_filter_cache_clear_advanced', false ); |
| 267 |
} |
| 268 |
|
| 269 |
/** |
| 270 |
* Returns a (hopefully) unique new cache folder name for renaming purposes. |
| 271 |
* |
| 272 |
* @return string |
| 273 |
*/ |
| 274 |
protected static function get_unique_name() |
| 275 |
{ |
| 276 |
$prefix = self::get_advanced_cache_clear_prefix(); |
| 277 |
$new_name = uniqid( $prefix, true ); |
| 278 |
|
| 279 |
return $new_name; |
| 280 |
} |
| 281 |
|
| 282 |
/** |
| 283 |
* Get cache prefix name used in advanced cache clearing mode. |
| 284 |
* |
| 285 |
* @return string |
| 286 |
*/ |
| 287 |
protected static function get_advanced_cache_clear_prefix() |
| 288 |
{ |
| 289 |
$pathname = self::get_pathname_base(); |
| 290 |
$basename = basename( $pathname ); |
| 291 |
$prefix = $basename . '-artifact-'; |
| 292 |
|
| 293 |
return $prefix; |
| 294 |
} |
| 295 |
|
| 296 |
/** |
| 297 |
* Returns an array of file and directory names found within |
| 298 |
* the given $pathname without '.' and '..' elements. |
| 299 |
* |
| 300 |
* @param string $pathname Pathname. |
| 301 |
* |
| 302 |
* @return array |
| 303 |
*/ |
| 304 |
protected static function get_dir_contents( $pathname ) |
| 305 |
{ |
| 306 |
return array_slice( scandir( $pathname ), 2 ); |
| 307 |
} |
| 308 |
|
| 309 |
/** |
| 310 |
* Wipes directories which were created as part of the fast cache clearing |
| 311 |
* routine (which renames the current cache directory into a new one with |
| 312 |
* a custom-prefixed unique name). |
| 313 |
* |
| 314 |
* @return bool |
| 315 |
*/ |
| 316 |
public static function delete_advanced_cache_clear_artifacts() |
| 317 |
{ |
| 318 |
// Don't go through these motions (called from the cachechecker) if advanced cache clear isn't even active. |
| 319 |
if ( ! self::advanced_cache_clear_enabled() ) { |
| 320 |
return false; |
| 321 |
} |
| 322 |
|
| 323 |
$dir = self::get_pathname_base(); |
| 324 |
$prefix = self::get_advanced_cache_clear_prefix(); |
| 325 |
$parent = dirname( $dir ); |
| 326 |
$ok = false; |
| 327 |
|
| 328 |
// Returns the list of files without '.' and '..' elements. |
| 329 |
$files = self::get_dir_contents( $parent ); |
| 330 |
if ( is_array( $files ) && ! empty( $files ) ) { |
| 331 |
foreach ( $files as $file ) { |
| 332 |
$path = $parent . '/' . $file; |
| 333 |
$prefixed = ( false !== strpos( $path, $prefix ) ); |
| 334 |
// Removing only our own (prefixed) directories... |
| 335 |
if ( is_dir( $path ) && $prefixed ) { |
| 336 |
$ok = self::rmdir( $path ); |
| 337 |
} |
| 338 |
} |
| 339 |
} |
| 340 |
|
| 341 |
return $ok; |
| 342 |
} |
| 343 |
|
| 344 |
/** |
| 345 |
* Returns the cache directory pathname used. |
| 346 |
* Done as a function so we canSlightly different |
| 347 |
* if multisite is used and `autoptimize_separate_blog_caches` filter |
| 348 |
* is used. |
| 349 |
* |
| 350 |
* @return string |
| 351 |
*/ |
| 352 |
public static function get_pathname() |
| 353 |
{ |
| 354 |
$pathname = self::get_pathname_base(); |
| 355 |
|
| 356 |
if ( is_multisite() && apply_filters( 'autoptimize_separate_blog_caches', true ) ) { |
| 357 |
$blog_id = get_current_blog_id(); |
| 358 |
$pathname .= $blog_id . '/'; |
| 359 |
} |
| 360 |
|
| 361 |
return $pathname; |
| 362 |
} |
| 363 |
|
| 364 |
/** |
| 365 |
* Returns the base path of our cache directory. |
| 366 |
* |
| 367 |
* @return string |
| 368 |
*/ |
| 369 |
protected static function get_pathname_base() |
| 370 |
{ |
| 371 |
$pathname = WP_CONTENT_DIR . AUTOPTIMIZE_CACHE_CHILD_DIR; |
| 372 |
|
| 373 |
return $pathname; |
| 374 |
} |
| 375 |
|
| 376 |
/** |
| 377 |
* Deletes everything from the cache directories. |
| 378 |
* |
| 379 |
* @param bool $propagate Whether to trigger additional actions when cache is purged. |
| 380 |
* |
| 381 |
* @return bool |
| 382 |
*/ |
| 383 |
public static function clearall( $propagate = true ) |
| 384 |
{ |
| 385 |
if ( defined( 'ET_CORE_VERSION' ) && 'Divi' === get_template() ) { |
| 386 |
// see https://blog.futtta.be/2018/11/17/warning-divi-purging-autoptimizes-cache/ . |
| 387 |
$dbt = debug_backtrace( DEBUG_BACKTRACE_IGNORE_ARGS, 2 ); |
| 388 |
$caller = isset( $dbt[1]['function'] ) ? $dbt[1]['function'] : null; |
| 389 |
if ( 'et_core_clear_wp_cache' === $caller ) { |
| 390 |
_doing_it_wrong( 'autoptimizeCache::clearall', 'Divi devs: please don\'t clear Autoptimize\'s cache, it is unneeded and can break sites. You can contact me at futtta@gmail.com to discuss.', 'Autoptimize 2.9.6' ); |
| 391 |
return false; |
| 392 |
} |
| 393 |
} |
| 394 |
|
| 395 |
if ( ! self::cacheavail() || true === apply_filters( 'autoptimize_filter_cache_clearall_disabled', false ) ) { |
| 396 |
return false; |
| 397 |
} |
| 398 |
|
| 399 |
// TODO/FIXME: If cache is big, switch to advanced/new cache clearing automatically? |
| 400 |
if ( self::advanced_cache_clear_enabled() ) { |
| 401 |
self::clear_cache_via_rename(); |
| 402 |
} else { |
| 403 |
self::clear_cache_classic(); |
| 404 |
} |
| 405 |
|
| 406 |
// Remove 404 handler if required. |
| 407 |
if ( self::do_fallback() ) { |
| 408 |
$_fallback_php = trailingslashit( WP_CONTENT_DIR ) . 'autoptimize_404_handler.php'; |
| 409 |
@unlink( $_fallback_php ); // @codingStandardsIgnoreLine |
| 410 |
} |
| 411 |
|
| 412 |
// Remove the transient so it gets regenerated... |
| 413 |
delete_transient( 'autoptimize_stats' ); |
| 414 |
|
| 415 |
// Cache was just purged, clear page cache and allow others to hook into our purging... |
| 416 |
if ( true === $propagate ) { |
| 417 |
if ( ! function_exists( 'autoptimize_do_cachepurged_action' ) ) { |
| 418 |
function autoptimize_do_cachepurged_action() { |
| 419 |
do_action( 'autoptimize_action_cachepurged' ); |
| 420 |
} |
| 421 |
} |
| 422 |
add_action( 'shutdown', 'autoptimize_do_cachepurged_action', 11 ); |
| 423 |
add_action( 'autoptimize_action_cachepurged', array( 'autoptimizeCache', 'flushPageCache' ), 10, 0 ); |
| 424 |
} |
| 425 |
|
| 426 |
// Warm cache (part of speedupper)! |
| 427 |
if ( apply_filters( 'autoptimize_filter_speedupper', true ) && false == get_transient( 'autoptimize_cache_warmer_protector' ) ) { |
| 428 |
set_transient( 'autoptimize_cache_warmer_protector', 'I shall not warm cache for another 10 minutes.', 60 * 10 ); |
| 429 |
$url = site_url() . '/?ao_speedup_cachebuster=' . rand( 1, 100000 ); |
| 430 |
$url = apply_filters( 'autoptimize_filter_cache_warmer_url', $url ); |
| 431 |
$cache = @wp_remote_get( $url ); // @codingStandardsIgnoreLine |
| 432 |
unset( $cache ); |
| 433 |
} |
| 434 |
|
| 435 |
return true; |
| 436 |
} |
| 437 |
|
| 438 |
/** |
| 439 |
* Wrapper for clearall but with false param |
| 440 |
* to ensure the event is not propagated to others |
| 441 |
* through our own hooks (to avoid infinite loops). |
| 442 |
* |
| 443 |
* @return bool |
| 444 |
*/ |
| 445 |
public static function clearall_actionless() |
| 446 |
{ |
| 447 |
return self::clearall( false ); |
| 448 |
} |
| 449 |
|
| 450 |
/** |
| 451 |
* Returns the contents of our cache dirs. |
| 452 |
* |
| 453 |
* @return array |
| 454 |
*/ |
| 455 |
protected static function get_cache_contents() |
| 456 |
{ |
| 457 |
$contents = array(); |
| 458 |
|
| 459 |
foreach ( array( '', 'js', 'css' ) as $dir ) { |
| 460 |
$contents[ $dir ] = scandir( AUTOPTIMIZE_CACHE_DIR . $dir ); |
| 461 |
} |
| 462 |
|
| 463 |
return $contents; |
| 464 |
} |
| 465 |
|
| 466 |
/** |
| 467 |
* Returns stats about cached contents. |
| 468 |
* |
| 469 |
* @return array |
| 470 |
*/ |
| 471 |
public static function stats() |
| 472 |
{ |
| 473 |
$stats = get_transient( 'autoptimize_stats' ); |
| 474 |
|
| 475 |
// If no transient, do the actual scan! |
| 476 |
if ( ! is_array( $stats ) ) { |
| 477 |
if ( ! self::cacheavail() ) { |
| 478 |
return 0; |
| 479 |
} |
| 480 |
$stats = self::stats_scan(); |
| 481 |
$count = $stats[0]; |
| 482 |
if ( $count > 100 ) { |
| 483 |
// Store results in transient. |
| 484 |
set_transient( |
| 485 |
'autoptimize_stats', |
| 486 |
$stats, |
| 487 |
apply_filters( 'autoptimize_filter_cache_statsexpiry', HOUR_IN_SECONDS ) |
| 488 |
); |
| 489 |
} |
| 490 |
} |
| 491 |
|
| 492 |
return $stats; |
| 493 |
} |
| 494 |
|
| 495 |
/** |
| 496 |
* Performs a scan of cache directory contents and returns an array |
| 497 |
* with 3 values: count, size, timestamp. |
| 498 |
* count = total number of found files |
| 499 |
* size = total filesize (in bytes) of found files |
| 500 |
* timestamp = unix timestamp when the scan was last performed/finished. |
| 501 |
* |
| 502 |
* @return array |
| 503 |
*/ |
| 504 |
protected static function stats_scan() |
| 505 |
{ |
| 506 |
$count = 0; |
| 507 |
$size = 0; |
| 508 |
|
| 509 |
// Scan everything in our cache directories. |
| 510 |
foreach ( self::get_cache_contents() as $name => $files ) { |
| 511 |
$dir = rtrim( AUTOPTIMIZE_CACHE_DIR . $name, '/' ) . '/'; |
| 512 |
foreach ( $files as $file ) { |
| 513 |
if ( self::is_valid_cache_file( $dir, $file ) ) { |
| 514 |
if ( AUTOPTIMIZE_CACHE_NOGZIP && |
| 515 |
( |
| 516 |
false !== strpos( $file, '.js' ) || |
| 517 |
false !== strpos( $file, '.css' ) || |
| 518 |
false !== strpos( $file, '.img' ) || |
| 519 |
false !== strpos( $file, '.txt' ) |
| 520 |
) |
| 521 |
) { |
| 522 |
// Web server is gzipping, we count .js|.css|.img|.txt files. |
| 523 |
$count++; |
| 524 |
} elseif ( ! AUTOPTIMIZE_CACHE_NOGZIP && false !== strpos( $file, '.none' ) ) { |
| 525 |
// We are gzipping ourselves via php, counting only .none files. |
| 526 |
$count++; |
| 527 |
} |
| 528 |
$size += filesize( $dir . $file ); |
| 529 |
} |
| 530 |
} |
| 531 |
} |
| 532 |
|
| 533 |
$stats = array( $count, $size, time() ); |
| 534 |
|
| 535 |
return $stats; |
| 536 |
} |
| 537 |
|
| 538 |
/** |
| 539 |
* Ensures the cache directory exists, is writeable and contains the |
| 540 |
* required .htaccess files. |
| 541 |
* Returns false in case it fails to ensure any of those things. |
| 542 |
* |
| 543 |
* @return bool |
| 544 |
*/ |
| 545 |
public static function cacheavail() |
| 546 |
{ |
| 547 |
// readonly FS explicitly OK'ed by dev, let's assume the cache dirs are there! |
| 548 |
if ( defined( 'AUTOPTIMIZE_CACHE_READONLY' ) ) { |
| 549 |
return true; |
| 550 |
} |
| 551 |
|
| 552 |
if ( false === autoptimizeCache::check_and_create_dirs() ) { |
| 553 |
return false; |
| 554 |
} |
| 555 |
|
| 556 |
// Using .htaccess inside our cache folder to overrule wp-super-cache. |
| 557 |
$htaccess = AUTOPTIMIZE_CACHE_DIR . '/.htaccess'; |
| 558 |
if ( ! is_file( $htaccess ) ) { |
| 559 |
/** |
| 560 |
* Create `wp-content/AO_htaccess_tmpl` file with |
| 561 |
* whatever htaccess rules you might need |
| 562 |
* if you want to override default AO htaccess |
| 563 |
*/ |
| 564 |
$htaccess_tmpl = WP_CONTENT_DIR . '/AO_htaccess_tmpl'; |
| 565 |
if ( is_file( $htaccess_tmpl ) ) { |
| 566 |
$content = file_get_contents( $htaccess_tmpl ); |
| 567 |
} elseif ( is_multisite() || ! AUTOPTIMIZE_CACHE_NOGZIP ) { |
| 568 |
$content = '<IfModule mod_expires.c> |
| 569 |
ExpiresActive On |
| 570 |
ExpiresByType text/css A30672000 |
| 571 |
ExpiresByType text/javascript A30672000 |
| 572 |
ExpiresByType application/javascript A30672000 |
| 573 |
</IfModule> |
| 574 |
<IfModule mod_headers.c> |
| 575 |
Header append Cache-Control "public, immutable" |
| 576 |
</IfModule> |
| 577 |
<IfModule mod_deflate.c> |
| 578 |
<FilesMatch "\.(js|css)$"> |
| 579 |
SetOutputFilter DEFLATE |
| 580 |
</FilesMatch> |
| 581 |
</IfModule> |
| 582 |
<IfModule mod_authz_core.c> |
| 583 |
<Files *.php> |
| 584 |
Require all granted |
| 585 |
</Files> |
| 586 |
</IfModule> |
| 587 |
<IfModule !mod_authz_core.c> |
| 588 |
<Files *.php> |
| 589 |
Order allow,deny |
| 590 |
Allow from all |
| 591 |
</Files> |
| 592 |
</IfModule>'; |
| 593 |
} else { |
| 594 |
$content = '<IfModule mod_expires.c> |
| 595 |
ExpiresActive On |
| 596 |
ExpiresByType text/css A30672000 |
| 597 |
ExpiresByType text/javascript A30672000 |
| 598 |
ExpiresByType application/javascript A30672000 |
| 599 |
</IfModule> |
| 600 |
<IfModule mod_headers.c> |
| 601 |
Header append Cache-Control "public, immutable" |
| 602 |
</IfModule> |
| 603 |
<IfModule mod_deflate.c> |
| 604 |
<FilesMatch "\.(js|css)$"> |
| 605 |
SetOutputFilter DEFLATE |
| 606 |
</FilesMatch> |
| 607 |
</IfModule> |
| 608 |
<IfModule mod_authz_core.c> |
| 609 |
<Files *.php> |
| 610 |
Require all denied |
| 611 |
</Files> |
| 612 |
</IfModule> |
| 613 |
<IfModule !mod_authz_core.c> |
| 614 |
<Files *.php> |
| 615 |
Order deny,allow |
| 616 |
Deny from all |
| 617 |
</Files> |
| 618 |
</IfModule>'; |
| 619 |
} |
| 620 |
|
| 621 |
if ( self::do_fallback() === true ) { |
| 622 |
$content .= "\nErrorDocument 404 " . trailingslashit( parse_url( content_url(), PHP_URL_PATH ) ) . 'autoptimize_404_handler.php'; |
| 623 |
} |
| 624 |
@file_put_contents( $htaccess, $content ); // @codingStandardsIgnoreLine |
| 625 |
} |
| 626 |
|
| 627 |
if ( self::do_fallback() ) { |
| 628 |
self::check_fallback_php(); |
| 629 |
} |
| 630 |
|
| 631 |
// All OK! |
| 632 |
return true; |
| 633 |
} |
| 634 |
|
| 635 |
/** |
| 636 |
* Checks if fallback-php file exists and create it if not. |
| 637 |
* |
| 638 |
* Return bool |
| 639 |
*/ |
| 640 |
public static function check_fallback_php() { |
| 641 |
$_fallback_filename = 'autoptimize_404_handler.php'; |
| 642 |
$_fallback_php = trailingslashit( WP_CONTENT_DIR ) . $_fallback_filename; |
| 643 |
$_fallback_status = true; |
| 644 |
|
| 645 |
if ( ! file_exists( $_fallback_php ) && is_writable( WP_CONTENT_DIR ) ) { |
| 646 |
$_fallback_php_contents = file_get_contents( AUTOPTIMIZE_PLUGIN_DIR . 'config/' . $_fallback_filename ); |
| 647 |
$_fallback_php_contents = str_replace( '<?php exit;', '<?php', $_fallback_php_contents ); |
| 648 |
$_fallback_php_contents = str_replace( '<!--ao-cache-dir-->', AUTOPTIMIZE_CACHE_DIR, $_fallback_php_contents ); |
| 649 |
$_fallback_php_contents = str_replace( '<!--ao-cachefile-prefix-->', AUTOPTIMIZE_CACHEFILE_PREFIX, $_fallback_php_contents ); |
| 650 |
if ( is_multisite() ) { |
| 651 |
$_fallback_php_contents = str_replace( '$multisite = false;', '$multisite = true;', $_fallback_php_contents ); |
| 652 |
} |
| 653 |
if ( apply_filters( 'autoptimize_filter_cache_fallback_log_errors', false ) ) { |
| 654 |
$_fallback_php_contents = str_replace( '// error_log', 'error_log', $_fallback_php_contents ); |
| 655 |
} |
| 656 |
$_fallback_status = file_put_contents( $_fallback_php, $_fallback_php_contents ); |
| 657 |
} |
| 658 |
|
| 659 |
return $_fallback_status; |
| 660 |
} |
| 661 |
|
| 662 |
/** |
| 663 |
* Tells if AO should try to avoid 404's by creating fallback filesize |
| 664 |
* and create a php 404 handler and tell .htaccess to redirect to said handler |
| 665 |
* and hook into WordPress to redirect 404 to said handler as well. NGINX users |
| 666 |
* are smart enough to get this working, no? ;-) |
| 667 |
* |
| 668 |
* Return bool |
| 669 |
*/ |
| 670 |
public static function do_fallback() { |
| 671 |
static $_do_fallback = null; |
| 672 |
|
| 673 |
if ( null === $_do_fallback ) { |
| 674 |
$_do_fallback = (bool) apply_filters( 'autoptimize_filter_cache_do_fallback', autoptimizeOptionWrapper::get_option( 'autoptimize_cache_fallback', '1' ) ); |
| 675 |
} |
| 676 |
|
| 677 |
return $_do_fallback; |
| 678 |
} |
| 679 |
|
| 680 |
/** |
| 681 |
* Hooks into template_redirect, will act on 404-ing requests for |
| 682 |
* Autoptimized files and redirects to the fallback CSS/ JS if available |
| 683 |
* and 410'ing ("Gone") if fallback not available. |
| 684 |
*/ |
| 685 |
public static function wordpress_notfound_fallback() { |
| 686 |
$original_request = strtok( $_SERVER['REQUEST_URI'], '?' ); |
| 687 |
if ( strpos( $original_request, wp_basename( WP_CONTENT_DIR ) . AUTOPTIMIZE_CACHE_CHILD_DIR ) !== false && is_404() ) { |
| 688 |
// make sure this is not considered a 404. |
| 689 |
global $wp_query; |
| 690 |
$wp_query->is_404 = false; |
| 691 |
|
| 692 |
// set fallback path. |
| 693 |
$js_or_css = pathinfo( $original_request, PATHINFO_EXTENSION ); |
| 694 |
$fallback_path = AUTOPTIMIZE_CACHE_DIR . $js_or_css . '/autoptimize_fallback.' . $js_or_css; |
| 695 |
|
| 696 |
// prepare for Shakeeb's Unused CSS files to be 404-handled as well. |
| 697 |
if ( strpos( $original_request, 'uucss/uucss-' ) !== false ) { |
| 698 |
$original_request = preg_replace( '/uucss\/uucss-[a-z0-9]{32}-/', 'css/', $original_request ); |
| 699 |
} |
| 700 |
|
| 701 |
// set fallback URL. |
| 702 |
$fallback_target = preg_replace( '/(.*)_(?:[a-z0-9]{32})\.(js|css)$/', '${1}_fallback.${2}', $original_request ); |
| 703 |
|
| 704 |
// redirect to fallback if possible. |
| 705 |
if ( $original_request !== $fallback_target && file_exists( $fallback_path ) ) { |
| 706 |
// redirect to fallback. |
| 707 |
wp_redirect( $fallback_target, 302 ); |
| 708 |
} else { |
| 709 |
// return HTTP 410 (gone) reponse. |
| 710 |
status_header( 410 ); |
| 711 |
} |
| 712 |
} |
| 713 |
} |
| 714 |
|
| 715 |
/** |
| 716 |
* Checks if cache dirs exist and create if not. |
| 717 |
* Returns false if not succesful. |
| 718 |
* |
| 719 |
* @return bool |
| 720 |
*/ |
| 721 |
public static function check_and_create_dirs() { |
| 722 |
if ( ! defined( 'AUTOPTIMIZE_CACHE_DIR' ) ) { |
| 723 |
// We didn't set a cache. |
| 724 |
return false; |
| 725 |
} |
| 726 |
|
| 727 |
foreach ( array( '', 'js', 'css' ) as $dir ) { |
| 728 |
if ( ! self::check_cache_dir( AUTOPTIMIZE_CACHE_DIR . $dir ) ) { |
| 729 |
return false; |
| 730 |
} |
| 731 |
} |
| 732 |
return true; |
| 733 |
} |
| 734 |
|
| 735 |
/** |
| 736 |
* Ensures the specified `$dir` exists and is writeable. |
| 737 |
* Returns false if that's not the case. |
| 738 |
* |
| 739 |
* @param string $dir Directory to check/create. |
| 740 |
* |
| 741 |
* @return bool |
| 742 |
*/ |
| 743 |
protected static function check_cache_dir( $dir ) |
| 744 |
{ |
| 745 |
// Try creating the dir if it doesn't exist. |
| 746 |
if ( ! file_exists( $dir ) ) { |
| 747 |
@mkdir( $dir, 0775, true ); // @codingStandardsIgnoreLine |
| 748 |
if ( ! file_exists( $dir ) ) { |
| 749 |
return false; |
| 750 |
} |
| 751 |
} |
| 752 |
|
| 753 |
// If we still cannot write, bail. |
| 754 |
if ( ! is_writable( $dir ) ) { |
| 755 |
return false; |
| 756 |
} |
| 757 |
|
| 758 |
// Create an index.html in there to avoid prying eyes! |
| 759 |
$idx_file = rtrim( $dir, '/\\' ) . '/index.html'; |
| 760 |
if ( ! is_file( $idx_file ) ) { |
| 761 |
@file_put_contents( $idx_file, '<html><head><meta name="robots" content="noindex, nofollow"></head><body>Generated by <a href="http://wordpress.org/extend/plugins/autoptimize/" rel="nofollow">Autoptimize</a></body></html>' ); // @codingStandardsIgnoreLine |
| 762 |
} |
| 763 |
|
| 764 |
return true; |
| 765 |
} |
| 766 |
|
| 767 |
/** |
| 768 |
* Flushes as many page cache plugin's caches as possible. |
| 769 |
* |
| 770 |
* @return void |
| 771 |
*/ |
| 772 |
// @codingStandardsIgnoreStart |
| 773 |
public static function flushPageCache() |
| 774 |
{ |
| 775 |
if ( function_exists( 'wp_cache_clear_cache' ) ) { |
| 776 |
if ( is_multisite() ) { |
| 777 |
$blog_id = get_current_blog_id(); |
| 778 |
wp_cache_clear_cache( $blog_id ); |
| 779 |
} else { |
| 780 |
wp_cache_clear_cache(); |
| 781 |
} |
| 782 |
} elseif ( has_action( 'cachify_flush_cache' ) ) { |
| 783 |
do_action( 'cachify_flush_cache' ); |
| 784 |
} elseif ( function_exists( 'w3tc_pgcache_flush' ) ) { |
| 785 |
w3tc_pgcache_flush(); |
| 786 |
} elseif ( function_exists( 'wp_fast_cache_bulk_delete_all' ) ) { |
| 787 |
wp_fast_cache_bulk_delete_all(); |
| 788 |
} elseif ( function_exists( 'rapidcache_clear_cache' ) ) { |
| 789 |
rapidcache_clear_cache(); |
| 790 |
} elseif ( class_exists( 'Swift_Performance_Cache' ) ) { |
| 791 |
Swift_Performance_Cache::clear_all_cache(); |
| 792 |
} elseif ( class_exists( 'WpFastestCache' ) ) { |
| 793 |
$wpfc = new WpFastestCache(); |
| 794 |
$wpfc->deleteCache(); |
| 795 |
} elseif ( class_exists( 'c_ws_plugin__qcache_purging_routines' ) ) { |
| 796 |
c_ws_plugin__qcache_purging_routines::purge_cache_dir(); // quick cache |
| 797 |
} elseif ( class_exists( 'zencache' ) ) { |
| 798 |
zencache::clear(); |
| 799 |
} elseif ( class_exists( 'comet_cache' ) ) { |
| 800 |
comet_cache::clear(); |
| 801 |
} elseif ( class_exists( 'WpeCommon' ) ) { |
| 802 |
// WPEngine cache purge/flush methods to call by default |
| 803 |
$wpe_methods = array( |
| 804 |
'purge_varnish_cache', |
| 805 |
); |
| 806 |
|
| 807 |
// More agressive clear/flush/purge behind a filter |
| 808 |
if ( apply_filters( 'autoptimize_flush_wpengine_aggressive', false ) ) { |
| 809 |
$wpe_methods = array_merge( $wpe_methods, array( 'purge_memcached', 'clear_maxcdn_cache' ) ); |
| 810 |
} |
| 811 |
|
| 812 |
// Filtering the entire list of WpeCommon methods to be called (for advanced usage + easier testing) |
| 813 |
$wpe_methods = apply_filters( 'autoptimize_flush_wpengine_methods', $wpe_methods ); |
| 814 |
|
| 815 |
foreach ( $wpe_methods as $wpe_method ) { |
| 816 |
if ( method_exists( 'WpeCommon', $wpe_method ) ) { |
| 817 |
WpeCommon::$wpe_method(); |
| 818 |
} |
| 819 |
} |
| 820 |
} elseif ( function_exists( 'sg_cachepress_purge_cache' ) ) { |
| 821 |
sg_cachepress_purge_cache(); |
| 822 |
} elseif ( array_key_exists( 'KINSTA_CACHE_ZONE', $_SERVER ) ) { |
| 823 |
$_kinsta_clear_cache_url = 'https://localhost/kinsta-clear-cache-all'; |
| 824 |
$_kinsta_response = wp_remote_get( |
| 825 |
$_kinsta_clear_cache_url, |
| 826 |
array( |
| 827 |
'sslverify' => false, |
| 828 |
'timeout' => 5, |
| 829 |
) |
| 830 |
); |
| 831 |
} elseif ( class_exists( 'RaidboxesNginxCacheFunctions' ) ) { |
| 832 |
$rb_cache_helper = new RaidboxesNginxCacheFunctions(); |
| 833 |
$rb_cache_helper->purge_cache(); |
| 834 |
} elseif ( defined('NGINX_HELPER_BASENAME') ) { |
| 835 |
do_action( 'rt_nginx_helper_purge_all' ); |
| 836 |
} elseif ( file_exists( WP_CONTENT_DIR . '/wp-cache-config.php' ) && function_exists( 'prune_super_cache' ) ) { |
| 837 |
// fallback for WP-Super-Cache |
| 838 |
global $cache_path; |
| 839 |
if ( is_multisite() ) { |
| 840 |
$blog_id = get_current_blog_id(); |
| 841 |
prune_super_cache( get_supercache_dir( $blog_id ), true ); |
| 842 |
prune_super_cache( $cache_path . 'blogs/', true ); |
| 843 |
} else { |
| 844 |
prune_super_cache( $cache_path . 'supercache/', true ); |
| 845 |
prune_super_cache( $cache_path, true ); |
| 846 |
} |
| 847 |
} elseif ( class_exists( 'NginxCache' ) ) { |
| 848 |
$nginx_cache = new NginxCache(); |
| 849 |
$nginx_cache->purge_zone_once(); |
| 850 |
} |
| 851 |
} |
| 852 |
// @codingStandardsIgnoreEnd |
| 853 |
} |
| 854 |
|
