| 1 |
<?php |
| 2 |
/** |
| 3 |
* Utils |
| 4 |
* |
| 5 |
* @package PoweredCache |
| 6 |
*/ |
| 7 |
|
| 8 |
namespace PoweredCache\Utils; |
| 9 |
|
| 10 |
use const PoweredCache\Constants\SETTING_OPTION; |
| 11 |
use RecursiveDirectoryIterator; |
| 12 |
use RecursiveIteratorIterator; |
| 13 |
|
| 14 |
/** |
| 15 |
* Is plugin activated network wide? |
| 16 |
* |
| 17 |
* @param string $plugin_file file path |
| 18 |
* |
| 19 |
* @return bool |
| 20 |
* @since 2.0 |
| 21 |
*/ |
| 22 |
function is_network_wide( $plugin_file ) { |
| 23 |
if ( ! is_multisite() ) { |
| 24 |
return false; |
| 25 |
} |
| 26 |
|
| 27 |
if ( ! function_exists( 'is_plugin_active_for_network' ) ) { |
| 28 |
require_once ABSPATH . '/wp-admin/includes/plugin.php'; |
| 29 |
} |
| 30 |
|
| 31 |
return is_plugin_active_for_network( plugin_basename( $plugin_file ) ); |
| 32 |
} |
| 33 |
|
| 34 |
/** |
| 35 |
* Get settings with defaults |
| 36 |
* |
| 37 |
* @param bool $force_network_wide Whether getting settings for network or not. |
| 38 |
* The function respects `POWERED_CACHE_IS_NETWORK` by default. |
| 39 |
* However, `POWERED_CACHE_IS_NETWORK` is not functional on |
| 40 |
* (de)activation hooks. |
| 41 |
* |
| 42 |
* @return array |
| 43 |
* @since 2.0 |
| 44 |
*/ |
| 45 |
function get_settings( $force_network_wide = false ) { |
| 46 |
$settings = [ |
| 47 |
// basic options |
| 48 |
'enable_page_cache' => true, |
| 49 |
'object_cache' => 'off', |
| 50 |
'cache_mobile' => true, |
| 51 |
'cache_mobile_separate_file' => false, |
| 52 |
'loggedin_user_cache' => false, |
| 53 |
'ssl_cache' => true, // deprecated |
| 54 |
'gzip_compression' => false, |
| 55 |
'cache_timeout' => 1440, |
| 56 |
// advanced options |
| 57 |
'auto_configure_htaccess' => true, |
| 58 |
'rejected_user_agents' => '', |
| 59 |
'rejected_cookies' => '', |
| 60 |
'vary_cookies' => '', |
| 61 |
'rejected_uri' => '', |
| 62 |
'accepted_query_strings' => '', |
| 63 |
'purge_additional_pages' => '', |
| 64 |
// file optimization |
| 65 |
'minify_html' => false, |
| 66 |
'combine_google_fonts' => false, |
| 67 |
'minify_css' => false, |
| 68 |
'combine_css' => false, |
| 69 |
'critical_css' => false, |
| 70 |
'critical_css_additional_files' => '', |
| 71 |
'critical_css_excluded_files' => '', |
| 72 |
'critical_css_appended_content' => '', |
| 73 |
'critical_css_fallback' => '', |
| 74 |
'excluded_css_files' => '', |
| 75 |
'minify_js' => false, |
| 76 |
'combine_js' => false, |
| 77 |
'excluded_js_files' => '', |
| 78 |
'js_execution_method' => 'blocking', |
| 79 |
'js_execution_optimized_only' => true, |
| 80 |
// media optimization |
| 81 |
// lazyload |
| 82 |
'enable_lazy_load' => false, |
| 83 |
'lazy_load_post_content' => true, |
| 84 |
'lazy_load_images' => true, |
| 85 |
'lazy_load_iframes' => true, |
| 86 |
'lazy_load_widgets' => true, |
| 87 |
'lazy_load_post_thumbnail' => true, |
| 88 |
'lazy_load_avatars' => true, |
| 89 |
'disable_wp_lazy_load' => false, |
| 90 |
'disable_wp_embeds' => false, |
| 91 |
'disable_emoji_scripts' => false, |
| 92 |
// cdn |
| 93 |
'enable_cdn' => false, |
| 94 |
'cdn_hostname' => array( '' ), |
| 95 |
'cdn_zone' => array( '' ), |
| 96 |
'cdn_rejected_files' => '', |
| 97 |
// preload |
| 98 |
'enable_cache_preload' => false, |
| 99 |
'preload_homepage' => true, |
| 100 |
'preload_public_posts' => true, |
| 101 |
'preload_public_tax' => true, |
| 102 |
'enable_sitemap_preload' => false, |
| 103 |
'preload_sitemap' => '', |
| 104 |
'prefetch_dns' => '', |
| 105 |
// db options |
| 106 |
'db_cleanup_post_revisions' => false, |
| 107 |
'db_cleanup_auto_drafts' => false, |
| 108 |
'db_cleanup_trashed_posts' => false, |
| 109 |
'db_cleanup_spam_comments' => false, |
| 110 |
'db_cleanup_trashed_comments' => false, |
| 111 |
'db_cleanup_expired_transients' => false, |
| 112 |
'db_cleanup_all_transients' => false, |
| 113 |
'db_cleanup_optimize_tables' => false, |
| 114 |
'enable_scheduled_db_cleanup' => false, |
| 115 |
'scheduled_db_cleanup_frequency' => 'daily', |
| 116 |
// add-ons |
| 117 |
'enable_cloudflare' => false, |
| 118 |
'cloudflare_email' => '', |
| 119 |
'cloudflare_api_key' => '', |
| 120 |
'cloudflare_zone' => '', |
| 121 |
'enable_heartbeat' => false, // extention status |
| 122 |
'heartbeat_dashboard_status' => 'enable', // enable,disable,modify |
| 123 |
'heartbeat_dashboard_interval' => 60, // default interval in seconds |
| 124 |
'heartbeat_editor_status' => 'enable', // enable,disable,modify |
| 125 |
'heartbeat_editor_interval' => 15, // default interval in seconds |
| 126 |
'heartbeat_frontend_status' => 'enable', // enable,disable,modify |
| 127 |
'heartbeat_frontend_interval' => 60, // default interval in seconds |
| 128 |
'enable_varnish' => false, |
| 129 |
'varnish_ip' => '', |
| 130 |
// misc |
| 131 |
'cache_footprint' => true, |
| 132 |
// new options needs to migrate from extensions |
| 133 |
'enable_google_tracking' => false, |
| 134 |
'enable_fb_tracking' => false, |
| 135 |
]; |
| 136 |
|
| 137 |
/** |
| 138 |
* Filter default settings. |
| 139 |
* |
| 140 |
* @hook powered_cache_default_settings |
| 141 |
* |
| 142 |
* @param {array} $settings Default settings. |
| 143 |
* |
| 144 |
* @return {array} New value |
| 145 |
* @since 2.0 |
| 146 |
*/ |
| 147 |
$default_settings = apply_filters( 'powered_cache_default_settings', $settings ); |
| 148 |
|
| 149 |
if ( POWERED_CACHE_IS_NETWORK || $force_network_wide ) { |
| 150 |
$settings = get_site_option( SETTING_OPTION, [] ); |
| 151 |
} else { |
| 152 |
$settings = get_option( SETTING_OPTION, [] ); |
| 153 |
} |
| 154 |
|
| 155 |
$settings = wp_parse_args( $settings, $default_settings ); |
| 156 |
|
| 157 |
return $settings; |
| 158 |
} |
| 159 |
|
| 160 |
|
| 161 |
/** |
| 162 |
* return base caching dir |
| 163 |
* use this function to get base caching directory instead of directly calling constant |
| 164 |
* |
| 165 |
* @return string path |
| 166 |
* @since 1.0 |
| 167 |
*/ |
| 168 |
function get_cache_dir() { |
| 169 |
if ( defined( 'POWERED_CACHE_CACHE_DIR' ) ) { |
| 170 |
return POWERED_CACHE_CACHE_DIR; // don't change unless have a particular reason |
| 171 |
} |
| 172 |
|
| 173 |
return WP_CONTENT_DIR . '/cache/'; |
| 174 |
} |
| 175 |
|
| 176 |
|
| 177 |
/** |
| 178 |
* Object cache methods keys will use as option |
| 179 |
* |
| 180 |
* @return array $object_caches |
| 181 |
* @since 1.2 apcu added |
| 182 |
* |
| 183 |
* @since 1.0 |
| 184 |
*/ |
| 185 |
function get_object_cache_dropins() { |
| 186 |
|
| 187 |
$object_caches = array( |
| 188 |
'memcache' => POWERED_CACHE_DROPIN_DIR . 'memcache-object-cache.php', |
| 189 |
'memcached' => POWERED_CACHE_DROPIN_DIR . 'memcached-object-cache.php', |
| 190 |
'redis' => POWERED_CACHE_DROPIN_DIR . 'redis-object-cache.php', |
| 191 |
'apcu' => POWERED_CACHE_DROPIN_DIR . 'apcu-object-cache.php', |
| 192 |
); |
| 193 |
|
| 194 |
/** |
| 195 |
* Filter object cache dropins. |
| 196 |
* |
| 197 |
* @hook powered_cache_object_cache_dropins |
| 198 |
* |
| 199 |
* @param {array} $object_caches The list of supported object-cache dropins. |
| 200 |
* |
| 201 |
* @return {array} New value |
| 202 |
* @since 1.0 |
| 203 |
*/ |
| 204 |
return apply_filters( 'powered_cache_object_cache_dropins', $object_caches ); |
| 205 |
} |
| 206 |
|
| 207 |
|
| 208 |
/** |
| 209 |
* Get available object cache backends |
| 210 |
* |
| 211 |
* @return array |
| 212 |
* @since 1.2 unset apcu |
| 213 |
* @since 1.0 |
| 214 |
*/ |
| 215 |
function get_available_object_caches() { |
| 216 |
$object_cache_methods = get_object_cache_dropins(); |
| 217 |
|
| 218 |
if ( ! class_exists( '\Memcache' ) || version_compare( PHP_VERSION, '5.6.20', '<' ) ) { |
| 219 |
unset( $object_cache_methods['memcache'] ); |
| 220 |
} |
| 221 |
|
| 222 |
if ( ! class_exists( '\Memcached' ) ) { |
| 223 |
unset( $object_cache_methods['memcached'] ); |
| 224 |
} |
| 225 |
|
| 226 |
if ( ! class_exists( '\Redis' ) ) { |
| 227 |
unset( $object_cache_methods['redis'] ); |
| 228 |
} |
| 229 |
|
| 230 |
if ( ! function_exists( '\apcu_add' ) ) { |
| 231 |
unset( $object_cache_methods['apcu'] ); |
| 232 |
} |
| 233 |
|
| 234 |
return array_keys( $object_cache_methods ); |
| 235 |
} |
| 236 |
|
| 237 |
|
| 238 |
/** |
| 239 |
* convert minutes to possible time format |
| 240 |
* |
| 241 |
* @param int $timeout_in_minutes TTL in minutes |
| 242 |
* |
| 243 |
* @return array |
| 244 |
* @since 1.1 |
| 245 |
*/ |
| 246 |
function get_timeout_with_interval( $timeout_in_minutes ) { |
| 247 |
$cache_timeout = $timeout_in_minutes; |
| 248 |
$selected_interval = 'MINUTE'; |
| 249 |
|
| 250 |
if ( $cache_timeout > 0 ) { |
| 251 |
if ( 0 === (int) ( $cache_timeout % 1440 ) ) { |
| 252 |
$cache_timeout = $cache_timeout / 1440; |
| 253 |
$selected_interval = 'DAY'; |
| 254 |
} elseif ( 0 === (int) ( $cache_timeout % 60 ) ) { |
| 255 |
$cache_timeout = $cache_timeout / 60; |
| 256 |
$selected_interval = 'HOUR'; |
| 257 |
} |
| 258 |
} |
| 259 |
|
| 260 |
return array( |
| 261 |
$cache_timeout, |
| 262 |
$selected_interval, |
| 263 |
); |
| 264 |
} |
| 265 |
|
| 266 |
/** |
| 267 |
* Determine whether display or not display htaccess configuration |
| 268 |
* .htaccess can affect the way of serving cached files. |
| 269 |
* Therefore it's only available for network admin on multisite |
| 270 |
* |
| 271 |
* @return bool |
| 272 |
*/ |
| 273 |
function can_configure_htaccess() { |
| 274 |
global $is_apache; |
| 275 |
|
| 276 |
if ( ! $is_apache ) { |
| 277 |
return false; |
| 278 |
} |
| 279 |
|
| 280 |
if ( POWERED_CACHE_IS_NETWORK && current_user_can( 'manage_network' ) ) { |
| 281 |
return true; |
| 282 |
} |
| 283 |
|
| 284 |
if ( is_multisite() && ! POWERED_CACHE_IS_NETWORK ) { |
| 285 |
return false; |
| 286 |
} |
| 287 |
|
| 288 |
if ( current_user_can( 'manage_options' ) ) { |
| 289 |
return true; |
| 290 |
} |
| 291 |
|
| 292 |
return false; |
| 293 |
} |
| 294 |
|
| 295 |
/** |
| 296 |
* Whether current user capable to do any configuration changes |
| 297 |
* |
| 298 |
* @return bool |
| 299 |
*/ |
| 300 |
function can_control_all_settings() { |
| 301 |
if ( is_multisite() ) { |
| 302 |
if ( current_user_can( 'manage_network' ) ) { |
| 303 |
return true; |
| 304 |
} |
| 305 |
|
| 306 |
return false; |
| 307 |
} |
| 308 |
|
| 309 |
if ( current_user_can( 'manage_options' ) ) { |
| 310 |
return true; |
| 311 |
} |
| 312 |
|
| 313 |
return false; |
| 314 |
} |
| 315 |
|
| 316 |
|
| 317 |
/** |
| 318 |
* Object cache has an effect on all WP |
| 319 |
* So, it should be available for the network admin on multisite |
| 320 |
* regardless of network-wide or individual activated |
| 321 |
* |
| 322 |
* @return bool |
| 323 |
*/ |
| 324 |
function can_configure_object_cache() { |
| 325 |
if ( is_multisite() ) { |
| 326 |
// only allow on network-wide activation |
| 327 |
if ( POWERED_CACHE_IS_NETWORK && current_user_can( 'manage_network' ) ) { |
| 328 |
return true; |
| 329 |
} |
| 330 |
|
| 331 |
return false; |
| 332 |
} |
| 333 |
|
| 334 |
if ( current_user_can( 'manage_options' ) ) { |
| 335 |
return true; |
| 336 |
} |
| 337 |
|
| 338 |
return false; |
| 339 |
} |
| 340 |
|
| 341 |
/** |
| 342 |
* Supported js execution methods |
| 343 |
* |
| 344 |
* @return mixed|void |
| 345 |
*/ |
| 346 |
function js_execution_methods() { |
| 347 |
$methods = [ |
| 348 |
'blocking' => esc_html__( 'Blocking – (default)', 'powered-cache' ), |
| 349 |
'async' => esc_html__( 'Non-blocking using async', 'powered-cache' ), |
| 350 |
'defer' => esc_html__( 'Non-blocking using defer', 'powered-cache' ), |
| 351 |
]; |
| 352 |
|
| 353 |
/** |
| 354 |
* Filter supported JS execution methods. |
| 355 |
* |
| 356 |
* @hook powered_cache_js_execution_methods |
| 357 |
* |
| 358 |
* @param {array} $powered_cache_js_execution_methods JS execution methods. |
| 359 |
* |
| 360 |
* @return {array} New value |
| 361 |
* @since 2.0 |
| 362 |
*/ |
| 363 |
return apply_filters( 'powered_cache_js_execution_methods', $methods ); |
| 364 |
} |
| 365 |
|
| 366 |
|
| 367 |
/** |
| 368 |
* Get available zones |
| 369 |
* |
| 370 |
* @return mixed|void |
| 371 |
* @since 1.0 |
| 372 |
*/ |
| 373 |
function cdn_zones() { |
| 374 |
$zones = [ |
| 375 |
'all' => esc_html__( 'All files', 'powered-cache' ), |
| 376 |
'image' => esc_html__( 'Images', 'powered-cache' ), |
| 377 |
'js' => esc_html__( 'JavaScript', 'powered-cache' ), |
| 378 |
'css' => esc_html__( 'CSS', 'powered-cache' ), |
| 379 |
]; |
| 380 |
|
| 381 |
/** |
| 382 |
* Filter CDN zone options. |
| 383 |
* |
| 384 |
* @hook powered_cache_cdn_zones |
| 385 |
* |
| 386 |
* @param {array} $zones CDN Zones (all,image,js,css) |
| 387 |
* |
| 388 |
* @return {array} New value |
| 389 |
* @since 1.0 |
| 390 |
*/ |
| 391 |
return apply_filters( 'powered_cache_cdn_zones', $zones ); |
| 392 |
} |
| 393 |
|
| 394 |
/** |
| 395 |
* Which version of plugin running |
| 396 |
* |
| 397 |
* @return bool |
| 398 |
*/ |
| 399 |
function is_premium() { |
| 400 |
if ( defined( 'POWERED_CACHE_PREMIUM_PLUGIN_FILE' ) && POWERED_CACHE_PREMIUM_PLUGIN_FILE ) { |
| 401 |
return true; |
| 402 |
} |
| 403 |
|
| 404 |
return false; |
| 405 |
} |
| 406 |
|
| 407 |
/** |
| 408 |
* Scheduled cleanup options |
| 409 |
* |
| 410 |
* @return array |
| 411 |
*/ |
| 412 |
function scheduled_cleanup_frequency_options() { |
| 413 |
$options = [ |
| 414 |
'daily' => esc_html__( 'Daily', 'powered-cache' ), |
| 415 |
'weekly' => esc_html__( 'Weekly', 'powered-cache' ), |
| 416 |
'monthly' => esc_html__( 'Monthly', 'powered-cache' ), |
| 417 |
]; |
| 418 |
|
| 419 |
/** |
| 420 |
* Filter scheduled cleanup options. |
| 421 |
* |
| 422 |
* @hook powered_cache_scheduled_cleanup_frequency_options |
| 423 |
* |
| 424 |
* @param {array} $options The list of supported schedules. |
| 425 |
* |
| 426 |
* @return {array} New value |
| 427 |
* @since 2.0 |
| 428 |
*/ |
| 429 |
return apply_filters( 'powered_cache_scheduled_cleanup_frequency_options', $options ); |
| 430 |
} |
| 431 |
|
| 432 |
/** |
| 433 |
* ports \settings_errors for SUI |
| 434 |
* |
| 435 |
* @param string $setting Slug title of a specific setting |
| 436 |
* @param bool $sanitize Whether to re-sanitize the setting value before returning errors |
| 437 |
* @param bool $hide_on_update Whether hide or not hide on update |
| 438 |
* |
| 439 |
* @see settings_errors |
| 440 |
*/ |
| 441 |
function settings_errors( $setting = '', $sanitize = false, $hide_on_update = false ) { |
| 442 |
|
| 443 |
if ( $hide_on_update && ! empty( $_GET['settings-updated'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended |
| 444 |
return; |
| 445 |
} |
| 446 |
|
| 447 |
$settings_errors = get_settings_errors( $setting, $sanitize ); |
| 448 |
|
| 449 |
if ( empty( $settings_errors ) ) { |
| 450 |
return; |
| 451 |
} |
| 452 |
|
| 453 |
$output = ''; |
| 454 |
|
| 455 |
foreach ( $settings_errors as $key => $details ) { |
| 456 |
if ( 'updated' === $details['type'] ) { |
| 457 |
$details['type'] = 'sui-notice-success'; |
| 458 |
} |
| 459 |
|
| 460 |
if ( in_array( $details['type'], array( 'error', 'success', 'warning', 'info' ), true ) ) { |
| 461 |
$details['type'] = 'sui-notice-' . $details['type']; |
| 462 |
} |
| 463 |
|
| 464 |
$css_id = sprintf( |
| 465 |
'setting-error-%s', |
| 466 |
esc_attr( $details['code'] ) |
| 467 |
); |
| 468 |
|
| 469 |
$css_class = sprintf( |
| 470 |
'sui-notice %s settings-error is-dismissible', |
| 471 |
esc_attr( $details['type'] ) |
| 472 |
); |
| 473 |
|
| 474 |
$output .= "<div id='$css_id' class='$css_class'> \n"; |
| 475 |
$output .= "<div class='sui-notice-content'><div class='sui-notice-message'>"; |
| 476 |
$output .= "<span class='sui-notice-icon sui-icon-info sui-md' aria-hidden='true'></span>"; |
| 477 |
$output .= "<p>{$details['message']}</p></div></div>"; |
| 478 |
$output .= "</div> \n"; |
| 479 |
} |
| 480 |
|
| 481 |
echo $output; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped |
| 482 |
} |
| 483 |
|
| 484 |
/** |
| 485 |
* remove directories recursively |
| 486 |
* |
| 487 |
* Adopted from W3TC Utility |
| 488 |
* |
| 489 |
* @param string $path The target path |
| 490 |
* @param array $exclude list of the files that will excluded |
| 491 |
* |
| 492 |
* @return void |
| 493 |
* @since 1.2.5 |
| 494 |
*/ |
| 495 |
function remove_dir( $path, $exclude = array() ) { |
| 496 |
// phpcs:disable WordPress.PHP.NoSilencedErrors.Discouraged |
| 497 |
$dir = @opendir( $path ); |
| 498 |
|
| 499 |
if ( $dir ) { |
| 500 |
while ( ( $entry = @readdir( $dir ) ) !== false ) { // phpcs:ignore WordPress.CodeAnalysis.AssignmentInCondition.FoundInWhileCondition |
| 501 |
if ( '.' === $entry || '..' === $entry ) { |
| 502 |
continue; |
| 503 |
} |
| 504 |
|
| 505 |
foreach ( $exclude as $mask ) { |
| 506 |
if ( fnmatch( $mask, basename( $entry ) ) ) { |
| 507 |
continue 2; |
| 508 |
} |
| 509 |
} |
| 510 |
|
| 511 |
$full_path = $path . DIRECTORY_SEPARATOR . $entry; |
| 512 |
|
| 513 |
if ( @is_dir( $full_path ) ) { |
| 514 |
remove_dir( $full_path, $exclude ); |
| 515 |
} else { |
| 516 |
@unlink( $full_path ); |
| 517 |
} |
| 518 |
} |
| 519 |
|
| 520 |
@closedir( $dir ); |
| 521 |
@rmdir( $path ); |
| 522 |
} |
| 523 |
// phpcs:enable WordPress.PHP.NoSilencedErrors.Discouraged |
| 524 |
} |
| 525 |
|
| 526 |
/** |
| 527 |
* Get base caching directory of the site. |
| 528 |
* |
| 529 |
* @return mixed|void |
| 530 |
* @since 1.1 |
| 531 |
*/ |
| 532 |
function site_cache_dir() { |
| 533 |
$base_dir = get_page_cache_dir(); |
| 534 |
|
| 535 |
// compatible with multisite |
| 536 |
$site_url = get_site_url(); |
| 537 |
|
| 538 |
$site_url_parsed = wp_parse_url( $site_url ); |
| 539 |
|
| 540 |
$site_path = $site_url_parsed['host']; |
| 541 |
|
| 542 |
if ( ! empty( $site_url_parsed['path'] ) ) { |
| 543 |
$site_path .= $site_url_parsed['path']; |
| 544 |
} |
| 545 |
|
| 546 |
$site_cache_dir = trailingslashit( $base_dir . $site_path ); |
| 547 |
|
| 548 |
/** |
| 549 |
* Filter get base caching directory of site |
| 550 |
* |
| 551 |
* @hook powered_cache_site_cache_dir |
| 552 |
* |
| 553 |
* @param {string} $site_cache_dir Site cache dir. |
| 554 |
* |
| 555 |
* @return {string} New value |
| 556 |
* @since 1.1 |
| 557 |
*/ |
| 558 |
return apply_filters( 'powered_cache_site_cache_dir', $site_cache_dir ); |
| 559 |
} |
| 560 |
|
| 561 |
/** |
| 562 |
* Page cache base directory. |
| 563 |
* |
| 564 |
* @return string |
| 565 |
* @since 1.1 $url parameter removed |
| 566 |
* @since 1.0 |
| 567 |
*/ |
| 568 |
function get_page_cache_dir() { |
| 569 |
$path = get_cache_dir() . 'powered-cache/'; |
| 570 |
|
| 571 |
/** |
| 572 |
* Filter page cache base directory. |
| 573 |
* |
| 574 |
* @hook powered_cache_get_page_cache_dir |
| 575 |
* |
| 576 |
* @param {string} $path Page cache dir |
| 577 |
* |
| 578 |
* @return {string} New value |
| 579 |
* @since 1.0 |
| 580 |
*/ |
| 581 |
return apply_filters( 'powered_cache_get_page_cache_dir', $path ); |
| 582 |
} |
| 583 |
|
| 584 |
/** |
| 585 |
* Clean up cache directory |
| 586 |
* |
| 587 |
* @return mixed |
| 588 |
* @since 1.0 |
| 589 |
*/ |
| 590 |
function clean_page_cache_dir() { |
| 591 |
remove_dir( get_page_cache_dir() ); |
| 592 |
} |
| 593 |
|
| 594 |
/** |
| 595 |
* Clean cache base for the current site |
| 596 |
* |
| 597 |
* @return mixed |
| 598 |
* @since 1.1 |
| 599 |
*/ |
| 600 |
function clean_site_cache_dir() { |
| 601 |
$site_cache_dir = site_cache_dir(); |
| 602 |
|
| 603 |
/** |
| 604 |
* When deleting cache for the main site on multisite subdirectory setup |
| 605 |
* Don't delete other site's cache |
| 606 |
*/ |
| 607 |
if ( is_multisite() && ! is_subdomain_install() && is_main_site() ) { |
| 608 |
$base_dir = get_page_cache_dir(); |
| 609 |
$directories = glob( $site_cache_dir . '*', GLOB_ONLYDIR ); |
| 610 |
$site_url = get_site_url(); |
| 611 |
|
| 612 |
$site_domain = wp_parse_url( $site_url, PHP_URL_HOST ); |
| 613 |
foreach ( $directories as $directory ) { |
| 614 |
$dir_name = str_replace( $base_dir . $site_domain, '', $directory ); |
| 615 |
$site_info = get_site_by_path( $site_domain, $dir_name ); |
| 616 |
if ( ! $site_info || is_main_site( $site_info->blog_id ) ) { |
| 617 |
remove_dir( $directory ); |
| 618 |
} |
| 619 |
} |
| 620 |
} else { |
| 621 |
remove_dir( $site_cache_dir ); |
| 622 |
} |
| 623 |
|
| 624 |
/** |
| 625 |
* Fires after deleting site cache dir |
| 626 |
* |
| 627 |
* @hook powered_cache_clean_site_cache_dir |
| 628 |
* |
| 629 |
* @param {string} $site_cache_dir The caching directory of the current site. |
| 630 |
* |
| 631 |
* @since 2.0 |
| 632 |
*/ |
| 633 |
do_action( 'powered_cache_clean_site_cache_dir', $site_cache_dir ); |
| 634 |
} |
| 635 |
|
| 636 |
|
| 637 |
/** |
| 638 |
* Supported mobile browsers |
| 639 |
* |
| 640 |
* @return mixed|void |
| 641 |
* @since 1.0 |
| 642 |
*/ |
| 643 |
function mobile_browsers() { |
| 644 |
$mobile_browsers |
| 645 |
= '2.0 MMP, 240x320, 400X240, AvantGo, BlackBerry, Blazer, Cellphone, Danger, DoCoMo, Elaine/3.0, EudoraWeb, Googlebot-Mobile, hiptop, IEMobile, KYOCERA/WX310K, LG/U990, MIDP-2., MMEF20, MOT-V, NetFront, Newt, Nintendo Wii, Nitro, Nokia, Opera Mini, Palm, PlayStation Portable, portalmmm, Proxinet, ProxiNet, SHARP-TQ-GX10, SHG-i900, Small, SonyEricsson, Symbian OS, SymbianOS, TS21i-10, UP.Browser, UP.Link, webOS, Windows CE, WinWAP, YahooSeeker/M1A1-R2D2, iPhone, iPod, Android, BlackBerry9530, LG-TU915 Obigo, LGE VX, webOS, Nokia5800'; |
| 646 |
|
| 647 |
/** |
| 648 |
* Filters supported mobile browsers. |
| 649 |
* |
| 650 |
* @hook powered_cache_mobile_browsers |
| 651 |
* |
| 652 |
* @param {string} $mobile_browsers Comma separated list of the defined mobile browsers. |
| 653 |
* |
| 654 |
* @since 1.0 |
| 655 |
*/ |
| 656 |
return apply_filters( 'powered_cache_mobile_browsers', $mobile_browsers ); |
| 657 |
} |
| 658 |
|
| 659 |
/** |
| 660 |
* Supported mobile prefixes |
| 661 |
* |
| 662 |
* @return mixed|void |
| 663 |
* @since 1.0 |
| 664 |
*/ |
| 665 |
function mobile_prefixes() { |
| 666 |
$mobile_prefixes |
| 667 |
= 'w3c , w3c-, acs-, alav, alca, amoi, audi, avan, benq, bird, blac, blaz, brew, cell, cldc, cmd-, dang, doco, eric, hipt, htc_, inno, ipaq, ipod, jigs, kddi, keji, leno, lg-c, lg-d, lg-g, lge-, lg/u, maui, maxo, midp, mits, mmef, mobi, mot-, moto, mwbp, nec-, newt, noki, palm, pana, pant, phil, play, port, prox, qwap, sage, sams, sany, sch-, sec-, send, seri, sgh-, shar, sie-, siem, smal, smar, sony, sph-, symb, t-mo, teli, tim-, tosh, tsm-, upg1, upsi, vk-v, voda, wap-, wapa, wapi, wapp, wapr, webc, winw, winw, xda , xda-'; |
| 668 |
|
| 669 |
/** |
| 670 |
* Filters supported mobile prefixes. |
| 671 |
* |
| 672 |
* @hook powered_cache_mobile_prefixes |
| 673 |
* |
| 674 |
* @param {string} $mobile_prefixes Comma separated list of the defined mobile prefixes. |
| 675 |
* |
| 676 |
* @since 1.0 |
| 677 |
*/ |
| 678 |
return apply_filters( 'powered_cache_mobile_prefixes', $mobile_prefixes ); |
| 679 |
} |
| 680 |
|
| 681 |
|
| 682 |
/** |
| 683 |
* Collect post related urls |
| 684 |
* |
| 685 |
* @param int $post_id Post ID |
| 686 |
* |
| 687 |
* @return array |
| 688 |
* @since 1.0 |
| 689 |
* @since 1.1 powered_cache_post_related_urls filter added |
| 690 |
*/ |
| 691 |
function get_post_related_urls( $post_id ) { |
| 692 |
|
| 693 |
$current_post_status = get_post_status( $post_id ); |
| 694 |
|
| 695 |
// array to collect all our URLs |
| 696 |
$related_urls = array(); |
| 697 |
|
| 698 |
if ( get_permalink( $post_id ) ) { |
| 699 |
// we're going to add a ton of things to flush. |
| 700 |
|
| 701 |
// related category urls |
| 702 |
$categories = get_the_category( $post_id ); |
| 703 |
if ( $categories ) { |
| 704 |
foreach ( $categories as $cat ) { |
| 705 |
array_push( $related_urls, get_category_link( $cat->term_id ) ); |
| 706 |
} |
| 707 |
} |
| 708 |
|
| 709 |
// related tags url |
| 710 |
$tags = get_the_tags( $post_id ); |
| 711 |
if ( $tags ) { |
| 712 |
foreach ( $tags as $tag ) { |
| 713 |
array_push( $related_urls, get_tag_link( $tag->term_id ) ); |
| 714 |
} |
| 715 |
} |
| 716 |
|
| 717 |
// Author URL |
| 718 |
array_push( $related_urls, get_author_posts_url( get_post_field( 'post_author', $post_id ) ), get_author_feed_link( get_post_field( 'post_author', $post_id ) ) ); |
| 719 |
|
| 720 |
// Archives and their feeds |
| 721 |
if ( get_post_type_archive_link( get_post_type( $post_id ) ) === true ) { |
| 722 |
array_push( $related_urls, get_post_type_archive_link( get_post_type( $post_id ) ), get_post_type_archive_feed_link( get_post_type( $post_id ) ) ); |
| 723 |
} |
| 724 |
|
| 725 |
// Post URL |
| 726 |
array_push( $related_urls, get_permalink( $post_id ) ); |
| 727 |
|
| 728 |
// Also clean URL for trashed post. |
| 729 |
if ( 'trash' === $current_post_status ) { |
| 730 |
$trashpost = get_permalink( $post_id ); |
| 731 |
$trashpost = str_replace( '__trashed', '', $trashpost ); |
| 732 |
array_push( $related_urls, $trashpost, $trashpost . 'feed/' ); |
| 733 |
} |
| 734 |
|
| 735 |
// Add in AMP permalink if Automattic's AMP is installed |
| 736 |
if ( function_exists( 'amp_get_permalink' ) ) { |
| 737 |
array_push( $related_urls, amp_get_permalink( $post_id ) ); |
| 738 |
} |
| 739 |
|
| 740 |
// Regular AMP url for posts |
| 741 |
array_push( $related_urls, get_permalink( $post_id ) . 'amp/' ); |
| 742 |
|
| 743 |
// Feeds |
| 744 |
array_push( $related_urls, get_bloginfo_rss( 'rdf_url' ), get_bloginfo_rss( 'rss_url' ), get_bloginfo_rss( 'rss2_url' ), get_bloginfo_rss( 'atom_url' ), get_bloginfo_rss( 'comments_rss2_url' ), get_post_comments_feed_link( $post_id ) ); |
| 745 |
|
| 746 |
// Home Page and (if used) posts page |
| 747 |
array_push( $related_urls, trailingslashit( home_url() ) ); |
| 748 |
if ( get_option( 'show_on_front' ) === 'page' ) { |
| 749 |
// Ensure we have a page_for_posts setting to avoid empty URL |
| 750 |
if ( get_option( 'page_for_posts' ) ) { |
| 751 |
array_push( $related_urls, get_permalink( get_option( 'page_for_posts' ) ) ); |
| 752 |
} |
| 753 |
} |
| 754 |
} |
| 755 |
|
| 756 |
/** |
| 757 |
* Filters post related urls. |
| 758 |
* |
| 759 |
* @hook powered_cache_post_related_urls |
| 760 |
* |
| 761 |
* @param {array} $related_urls The list of the URLs that related with the post. |
| 762 |
* |
| 763 |
* @since 1.0 |
| 764 |
*/ |
| 765 |
$related_urls = apply_filters( 'powered_cache_post_related_urls', $related_urls ); |
| 766 |
|
| 767 |
return $related_urls; |
| 768 |
} |
| 769 |
|
| 770 |
|
| 771 |
/** |
| 772 |
* Delete cache file |
| 773 |
* |
| 774 |
* @param string $url Target URL |
| 775 |
* |
| 776 |
* @return bool true when found cache dir, otherwise false |
| 777 |
* @since 1.0 |
| 778 |
*/ |
| 779 |
function delete_page_cache( $url ) { |
| 780 |
|
| 781 |
$dir = trailingslashit( get_url_dir( trim( $url ) ) ); |
| 782 |
|
| 783 |
if ( is_dir( $dir ) ) { |
| 784 |
$files = scandir( $dir ); |
| 785 |
foreach ( $files as $file ) { |
| 786 |
/** |
| 787 |
* Don't need to lookup for index-https, index-https-mobile etc.. |
| 788 |
* Just clean that directory's files only. |
| 789 |
*/ |
| 790 |
if ( ! is_dir( $dir . $file ) && ! in_array( $file, array( '.', '..' ), true ) ) { |
| 791 |
unlink( $dir . $file ); |
| 792 |
} |
| 793 |
|
| 794 |
if ( file_exists( $dir ) && is_dir_empty( $dir ) ) { |
| 795 |
remove_dir( $dir ); |
| 796 |
} |
| 797 |
} |
| 798 |
|
| 799 |
return true; |
| 800 |
} |
| 801 |
|
| 802 |
return false; |
| 803 |
} |
| 804 |
|
| 805 |
|
| 806 |
/** |
| 807 |
* Get cache location of given url |
| 808 |
* |
| 809 |
* @param string $url The url to retrieve path |
| 810 |
* |
| 811 |
* @return mixed|void |
| 812 |
* @since 1.1 |
| 813 |
*/ |
| 814 |
function get_url_dir( $url ) { |
| 815 |
$url_info = wp_parse_url( $url ); |
| 816 |
$sub_dir = $url_info['host']; |
| 817 |
|
| 818 |
if ( ! empty( $url_info['path'] ) ) { |
| 819 |
$sub_dir .= $url_info['path']; |
| 820 |
} |
| 821 |
|
| 822 |
$path = trailingslashit( get_page_cache_dir() ) . ltrim( $sub_dir, '/' ); |
| 823 |
|
| 824 |
/** |
| 825 |
* Filters the path of the given url in the cache directory. |
| 826 |
* |
| 827 |
* @hook powered_cache_get_url_dir |
| 828 |
* |
| 829 |
* @param {string} $path The cache directory of the given URL. |
| 830 |
* |
| 831 |
* @since 1.1 |
| 832 |
*/ |
| 833 |
return apply_filters( 'powered_cache_get_url_dir', $path ); |
| 834 |
} |
| 835 |
|
| 836 |
/** |
| 837 |
* Prepare cdn addresses with hostname + zone |
| 838 |
* |
| 839 |
* @return mixed|void |
| 840 |
* @since 1.0 |
| 841 |
*/ |
| 842 |
function cdn_addresses() { |
| 843 |
$settings = get_settings(); // phpcs:ignore WordPress.WP.DeprecatedFunctions.get_settingsFound |
| 844 |
|
| 845 |
$hostnames = $settings['cdn_hostname']; |
| 846 |
$zones = $settings['cdn_zone']; |
| 847 |
|
| 848 |
$cdn_addresses = array(); |
| 849 |
foreach ( $hostnames as $host_key => $host ) { |
| 850 |
if ( ! empty( $host ) ) { |
| 851 |
$cdn_addresses[ $zones[ $host_key ] ][] = $host; |
| 852 |
} |
| 853 |
} |
| 854 |
|
| 855 |
/** |
| 856 |
* Filters CDN Addresses. |
| 857 |
* |
| 858 |
* @hook powered_cache_cdn_addresses |
| 859 |
* |
| 860 |
* @param {array} $cdn_addresses CDN Adresses. |
| 861 |
* |
| 862 |
* @return {array} New value. |
| 863 |
* |
| 864 |
* @since 1.0 |
| 865 |
*/ |
| 866 |
return apply_filters( 'powered_cache_cdn_addresses', $cdn_addresses ); |
| 867 |
} |
| 868 |
|
| 869 |
|
| 870 |
/** |
| 871 |
* Get list of expired files for given directory |
| 872 |
* |
| 873 |
* @param string $path directory location |
| 874 |
* @param int $lifespan lifespan in seconds |
| 875 |
* |
| 876 |
* @return array expired file list |
| 877 |
* @since 1.1 |
| 878 |
*/ |
| 879 |
function get_expired_files( $path, $lifespan = 0 ) { |
| 880 |
|
| 881 |
$current_time = time(); |
| 882 |
|
| 883 |
$expired_files = array(); |
| 884 |
|
| 885 |
// return immediately if the path is not exist! |
| 886 |
if ( ! file_exists( $path ) ) { |
| 887 |
return $expired_files; |
| 888 |
} |
| 889 |
|
| 890 |
$files = new RecursiveIteratorIterator( new RecursiveDirectoryIterator( $path ) ); |
| 891 |
|
| 892 |
foreach ( $files as $file ) { |
| 893 |
|
| 894 |
if ( $file->isDir() ) { |
| 895 |
continue; |
| 896 |
} |
| 897 |
|
| 898 |
$path = $file->getPathname(); |
| 899 |
|
| 900 |
if ( @filemtime( $path ) + $lifespan <= $current_time ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged |
| 901 |
$expired_files[] = $path; |
| 902 |
} |
| 903 |
} |
| 904 |
|
| 905 |
return $expired_files; |
| 906 |
} |
| 907 |
|
| 908 |
|
| 909 |
/** |
| 910 |
* Flush object cache and clean cache directory |
| 911 |
* |
| 912 |
* @since 1.0 |
| 913 |
*/ |
| 914 |
function powered_cache_flush() { |
| 915 |
if ( function_exists( 'wp_cache_flush' ) ) { |
| 916 |
wp_cache_flush(); |
| 917 |
} |
| 918 |
|
| 919 |
remove_dir( get_cache_dir() ); |
| 920 |
|
| 921 |
/** |
| 922 |
* Fires after cache flush. |
| 923 |
* |
| 924 |
* @hook powered_cache_flushed |
| 925 |
* |
| 926 |
* @since 1.0 |
| 927 |
*/ |
| 928 |
do_action( 'powered_cache_flushed' ); |
| 929 |
} |
| 930 |
|
| 931 |
/** |
| 932 |
* Log to stdout or a file |
| 933 |
* |
| 934 |
* @param string $message Log message |
| 935 |
* |
| 936 |
* @return bool |
| 937 |
*/ |
| 938 |
function log( $message ) { |
| 939 |
if ( ! defined( 'POWERED_CACHE_ENABLE_LOG' ) ) { |
| 940 |
return false; |
| 941 |
} |
| 942 |
|
| 943 |
if ( ! POWERED_CACHE_ENABLE_LOG ) { |
| 944 |
return false; |
| 945 |
} |
| 946 |
|
| 947 |
$log_message = gmdate( 'H:i:s' ) . ' ' . getmypid() . ' ' . get_client_ip() . " {$message}" . PHP_EOL; |
| 948 |
|
| 949 |
/** |
| 950 |
* Filters log message. |
| 951 |
* |
| 952 |
* @hook powered_cache_log_message |
| 953 |
* |
| 954 |
* @param {string} $log_message The log message. |
| 955 |
* |
| 956 |
* @return {string} New value. |
| 957 |
* |
| 958 |
* @since 2.0 |
| 959 |
*/ |
| 960 |
$log_message = apply_filters( 'powered_cache_log_message', $log_message ); |
| 961 |
|
| 962 |
/** |
| 963 |
* Filters log message type. |
| 964 |
* |
| 965 |
* @hook powered_cache_log_message_type |
| 966 |
* |
| 967 |
* @param {null|int} null default message type |
| 968 |
* |
| 969 |
* @return {null|int} New value. |
| 970 |
* |
| 971 |
* @since 2.0 |
| 972 |
*/ |
| 973 |
$message_type = apply_filters( 'powered_cache_log_message_type', null ); |
| 974 |
$destination = null; |
| 975 |
|
| 976 |
if ( defined( 'POWERED_CACHE_LOG_FILE' ) ) { |
| 977 |
$destination = POWERED_CACHE_LOG_FILE; |
| 978 |
$message_type = 3; |
| 979 |
} |
| 980 |
|
| 981 |
/** |
| 982 |
* Filters destination of the log. |
| 983 |
* |
| 984 |
* @hook powered_cache_log_destination |
| 985 |
* |
| 986 |
* @param {null|string} $destination The destination of the log. |
| 987 |
* |
| 988 |
* @return {null|string} New value. |
| 989 |
* |
| 990 |
* @since 2.0 |
| 991 |
*/ |
| 992 |
$log_destination = apply_filters( 'powered_cache_log_destination', $destination ); |
| 993 |
|
| 994 |
// don't log anything when it used for particular IP address |
| 995 |
if ( defined( 'POWERED_CACHE_LOG_IP' ) && POWERED_CACHE_LOG_IP !== get_client_ip() ) { |
| 996 |
return false; |
| 997 |
} |
| 998 |
|
| 999 |
return error_log( $log_message, $message_type, $log_destination ); // phpcs:ignore |
| 1000 |
} |
| 1001 |
|
| 1002 |
/** |
| 1003 |
* Get client raw ip |
| 1004 |
* |
| 1005 |
* @return mixed |
| 1006 |
*/ |
| 1007 |
function get_client_ip() { |
| 1008 |
if ( ! empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) { |
| 1009 |
return $_SERVER['HTTP_X_FORWARDED_FOR']; |
| 1010 |
} |
| 1011 |
|
| 1012 |
return $_SERVER['REMOTE_ADDR']; |
| 1013 |
} |
| 1014 |
|
| 1015 |
/** |
| 1016 |
* Fragment caching |
| 1017 |
* |
| 1018 |
* @link https://gist.github.com/markjaquith/2653957 |
| 1019 |
* @see https://gist.github.com/westonruter/5475349 |
| 1020 |
* |
| 1021 |
* @param string $key Fragment key |
| 1022 |
* @param int $ttl Cache TTL |
| 1023 |
* @param callable $function callback |
| 1024 |
* |
| 1025 |
* @throws \Exception Exception |
| 1026 |
* @since 1.2 |
| 1027 |
* @since 2.0 Renamed powered_cache_fragment -> \PoweredCache\Utils\cache_fragment |
| 1028 |
*/ |
| 1029 |
function cache_fragment( $key, $ttl, $function ) { |
| 1030 |
$group = 'powered-fragments'; |
| 1031 |
$output = wp_cache_get( $key, $group ); |
| 1032 |
if ( empty( $output ) ) { |
| 1033 |
ob_start(); |
| 1034 |
call_user_func( $function ); |
| 1035 |
$output = ob_get_clean(); |
| 1036 |
wp_cache_add( $key, $output, $group, $ttl ); |
| 1037 |
} |
| 1038 |
echo $output; // phpcs:ignore |
| 1039 |
} |
| 1040 |
|
| 1041 |
/** |
| 1042 |
* Fetches known headers, ported from WP Super Cache but not using apache_response_headers |
| 1043 |
* |
| 1044 |
* @return array|false |
| 1045 |
* @since 1.2 |
| 1046 |
*/ |
| 1047 |
function get_response_headers() { |
| 1048 |
static $known_headers = array( |
| 1049 |
'Access-Control-Allow-Origin', |
| 1050 |
'Accept-Ranges', |
| 1051 |
'Age', |
| 1052 |
'Allow', |
| 1053 |
'Cache-Control', |
| 1054 |
'Connection', |
| 1055 |
'Content-Encoding', |
| 1056 |
'Content-Language', |
| 1057 |
'Content-Length', |
| 1058 |
'Content-Location', |
| 1059 |
'Content-MD5', |
| 1060 |
'Content-Disposition', |
| 1061 |
'Content-Range', |
| 1062 |
'Content-Type', |
| 1063 |
'Date', |
| 1064 |
'ETag', |
| 1065 |
'Expires', |
| 1066 |
'Last-Modified', |
| 1067 |
'Link', |
| 1068 |
'Location', |
| 1069 |
'P3P', |
| 1070 |
'Pragma', |
| 1071 |
'Proxy-Authenticate', |
| 1072 |
'Referrer-Policy', |
| 1073 |
'Refresh', |
| 1074 |
'Retry-After', |
| 1075 |
'Server', |
| 1076 |
'Status', |
| 1077 |
'Strict-Transport-Security', |
| 1078 |
'Trailer', |
| 1079 |
'Transfer-Encoding', |
| 1080 |
'Upgrade', |
| 1081 |
'Vary', |
| 1082 |
'Via', |
| 1083 |
'Warning', |
| 1084 |
'WWW-Authenticate', |
| 1085 |
'X-Frame-Options', |
| 1086 |
'Public-Key-Pins', |
| 1087 |
'X-XSS-Protection', |
| 1088 |
'Content-Security-Policy', |
| 1089 |
'X-Pingback', |
| 1090 |
'X-Content-Security-Policy', |
| 1091 |
'X-WebKit-CSP', |
| 1092 |
'X-Content-Type-Options', |
| 1093 |
'X-Powered-By', |
| 1094 |
'X-UA-Compatible', |
| 1095 |
'X-Robots-Tag', |
| 1096 |
); |
| 1097 |
|
| 1098 |
/** |
| 1099 |
* Filters known headers. |
| 1100 |
* |
| 1101 |
* @hook powered_cache_known_headers |
| 1102 |
* |
| 1103 |
* @param {array} $known_headers The list of known HTTP headers. |
| 1104 |
* |
| 1105 |
* @return {array} New value. |
| 1106 |
* |
| 1107 |
* @since 1.2 |
| 1108 |
*/ |
| 1109 |
$known_headers = apply_filters( 'powered_cache_known_headers', $known_headers ); |
| 1110 |
|
| 1111 |
if ( ! isset( $known_headers['age'] ) ) { |
| 1112 |
$known_headers = array_map( 'strtolower', $known_headers ); |
| 1113 |
} |
| 1114 |
|
| 1115 |
$headers = array(); |
| 1116 |
|
| 1117 |
if ( function_exists( 'headers_list' ) ) { |
| 1118 |
$headers = array(); |
| 1119 |
foreach ( headers_list() as $hdr ) { |
| 1120 |
$header_parts = explode( ':', $hdr, 2 ); |
| 1121 |
$header_name = isset( $header_parts[0] ) ? trim( $header_parts[0] ) : ''; |
| 1122 |
$header_value = isset( $header_parts[1] ) ? trim( $header_parts[1] ) : ''; |
| 1123 |
|
| 1124 |
$headers[ $header_name ] = $header_value; |
| 1125 |
} |
| 1126 |
} |
| 1127 |
|
| 1128 |
foreach ( $headers as $key => $value ) { |
| 1129 |
if ( ! in_array( strtolower( $key ), $known_headers, true ) ) { |
| 1130 |
unset( $headers[ $key ] ); |
| 1131 |
} |
| 1132 |
} |
| 1133 |
|
| 1134 |
return $headers; |
| 1135 |
} |
| 1136 |
|
| 1137 |
|
| 1138 |
/** |
| 1139 |
* Check if the given url exists in the cache |
| 1140 |
* |
| 1141 |
* @param string $url URL |
| 1142 |
* @param bool $is_mobile Check mobile cache |
| 1143 |
* @param bool $is_gzip check gzipped cache |
| 1144 |
* |
| 1145 |
* @return bool |
| 1146 |
*/ |
| 1147 |
function is_url_cached( $url, $is_mobile = false, $is_gzip = false ) { |
| 1148 |
$file_name = 'index'; |
| 1149 |
$url_parts = wp_parse_url( $url ); |
| 1150 |
|
| 1151 |
if ( 'https' === $url_parts['scheme'] ) { |
| 1152 |
$file_name .= '-https'; |
| 1153 |
} |
| 1154 |
|
| 1155 |
if ( $is_mobile ) { |
| 1156 |
$file_name .= '-mobile'; |
| 1157 |
} |
| 1158 |
|
| 1159 |
$file_name .= '.html'; |
| 1160 |
|
| 1161 |
if ( $is_gzip ) { |
| 1162 |
$file_name .= '.gz'; |
| 1163 |
} |
| 1164 |
|
| 1165 |
$rel_path = $url_parts['host']; |
| 1166 |
if ( ! empty( $url_parts['path'] ) ) { |
| 1167 |
$rel_path .= $url_parts['path']; |
| 1168 |
} |
| 1169 |
|
| 1170 |
$path = trailingslashit( get_page_cache_dir() . $rel_path ); |
| 1171 |
|
| 1172 |
$cache_file = $path . $file_name; |
| 1173 |
|
| 1174 |
return file_exists( $cache_file ); |
| 1175 |
} |
| 1176 |
|
| 1177 |
/** |
| 1178 |
* Check if the permalink structure of the site end with trailingslash |
| 1179 |
* |
| 1180 |
* @return bool |
| 1181 |
* @since 2.0 |
| 1182 |
*/ |
| 1183 |
function permalink_structure_has_trailingslash() { |
| 1184 |
if ( '/' === substr( get_option( 'permalink_structure' ), - 1 ) ) { |
| 1185 |
return true; |
| 1186 |
} |
| 1187 |
|
| 1188 |
return false; |
| 1189 |
} |
| 1190 |
|
| 1191 |
/** |
| 1192 |
* Check if the given directory empty |
| 1193 |
* |
| 1194 |
* @param string $dir Path |
| 1195 |
* |
| 1196 |
* @return bool |
| 1197 |
*/ |
| 1198 |
function is_dir_empty( $dir ) { |
| 1199 |
foreach ( new \DirectoryIterator( $dir ) as $file_info ) { |
| 1200 |
if ( $file_info->isDot() ) { |
| 1201 |
continue; |
| 1202 |
} |
| 1203 |
|
| 1204 |
return false; |
| 1205 |
} |
| 1206 |
|
| 1207 |
return true; |
| 1208 |
} |
| 1209 |
|
| 1210 |
/** |
| 1211 |
* Get the documentation url |
| 1212 |
* |
| 1213 |
* @param string $path The path of documentation |
| 1214 |
* @param string $fragment URL Fragment |
| 1215 |
* |
| 1216 |
* @return string final URL |
| 1217 |
*/ |
| 1218 |
function get_doc_url( $path = null, $fragment = '' ) { |
| 1219 |
$doc_site = 'https://docs.poweredcache.com/'; |
| 1220 |
$utm_parameters = '?utm_source=wp_admin&utm_medium=plugin&utm_campaign=settings_page'; |
| 1221 |
|
| 1222 |
if ( ! empty( $path ) ) { |
| 1223 |
$doc_site .= ltrim( $path, '/' ); |
| 1224 |
} |
| 1225 |
|
| 1226 |
$doc_url = trailingslashit( $doc_site ) . $utm_parameters; |
| 1227 |
|
| 1228 |
if ( ! empty( $fragment ) ) { |
| 1229 |
$doc_url .= '#' . $fragment; |
| 1230 |
} |
| 1231 |
|
| 1232 |
return $doc_url; |
| 1233 |
} |
| 1234 |
|
| 1235 |
/** |
| 1236 |
* Sanitize CSS |
| 1237 |
* |
| 1238 |
* @param string $css Input |
| 1239 |
* |
| 1240 |
* @return string|string[] $css |
| 1241 |
* @since 2.1 |
| 1242 |
*/ |
| 1243 |
function sanitize_css( $css ) { |
| 1244 |
$css = wp_strip_all_tags( $css ); |
| 1245 |
|
| 1246 |
if ( false !== strpos( $css, '<' ) ) { |
| 1247 |
$css = preg_replace( '#<(\/?\w+)#', '\00003C$1', $css ); |
| 1248 |
} |
| 1249 |
|
| 1250 |
return $css; |
| 1251 |
} |
| 1252 |
|
| 1253 |
|
| 1254 |
/** |
| 1255 |
* Test if the current browser runs on a mobile device (smart phone, tablet, etc.) |
| 1256 |
* Sort of custom version of wp_is_mobile |
| 1257 |
*/ |
| 1258 |
function powered_cache_is_mobile() { |
| 1259 |
|
| 1260 |
global $powered_cache_mobile_browsers, $powered_cache_mobile_prefixes; |
| 1261 |
|
| 1262 |
$mobile_browsers = addcslashes( implode( '|', preg_split( '/[\s*,\s*]*,+[\s*,\s*]*/', $powered_cache_mobile_browsers ) ), ' ' ); |
| 1263 |
$mobile_prefixes = addcslashes( implode( '|', preg_split( '/[\s*,\s*]*,+[\s*,\s*]*/', $powered_cache_mobile_prefixes ) ), ' ' ); |
| 1264 |
|
| 1265 |
if ( ( preg_match( '#^.*(' . $mobile_browsers . ').*#i', $_SERVER['HTTP_USER_AGENT'] ) || preg_match( '#^(' . $mobile_prefixes . ').*#i', substr( $_SERVER['HTTP_USER_AGENT'], 0, 4 ) ) ) ) { |
| 1266 |
return true; |
| 1267 |
} |
| 1268 |
|
| 1269 |
return false; |
| 1270 |
} |
| 1271 |
|
