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1 <?php 2 /** 3 * These functions are needed to load WordPress. 4 * 5 * @package WordPress 6 */ 7 8 /** 9 * Return the HTTP protocol sent by the server. 10 * 11 * @since 4.4.0 12 * 13 * @return string The HTTP protocol. Default: HTTP/1.0. 14 */ 15 function wp_get_server_protocol() { 16 $protocol = isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : ''; 17 if ( ! in_array( $protocol, array( 'HTTP/1.1', 'HTTP/2', 'HTTP/2.0' ) ) ) { 18 $protocol = 'HTTP/1.0'; 19 } 20 return $protocol; 21 } 22 23 /** 24 * Turn register globals off. 25 * 26 * @since 2.1.0 27 * @access private 28 */ 29 function wp_unregister_GLOBALS() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid 30 if ( ! ini_get( 'register_globals' ) ) { 31 return; 32 } 33 34 if ( isset( $_REQUEST['GLOBALS'] ) ) { 35 die( 'GLOBALS overwrite attempt detected' ); 36 } 37 38 // Variables that shouldn't be unset. 39 $no_unset = array( 'GLOBALS', '_GET', '_POST', '_COOKIE', '_REQUEST', '_SERVER', '_ENV', '_FILES', 'table_prefix' ); 40 41 $input = array_merge( $_GET, $_POST, $_COOKIE, $_SERVER, $_ENV, $_FILES, isset( $_SESSION ) && is_array( $_SESSION ) ? $_SESSION : array() ); 42 foreach ( $input as $k => $v ) { 43 if ( ! in_array( $k, $no_unset ) && isset( $GLOBALS[ $k ] ) ) { 44 unset( $GLOBALS[ $k ] ); 45 } 46 } 47 } 48 49 /** 50 * Fix `$_SERVER` variables for various setups. 51 * 52 * @since 3.0.0 53 * @access private 54 * 55 * @global string $PHP_SELF The filename of the currently executing script, 56 * relative to the document root. 57 */ 58 function wp_fix_server_vars() { 59 global $PHP_SELF; 60 61 $default_server_values = array( 62 'SERVER_SOFTWARE' => '', 63 'REQUEST_URI' => '', 64 ); 65 66 $_SERVER = array_merge( $default_server_values, $_SERVER ); 67 68 // Fix for IIS when running with PHP ISAPI. 69 if ( empty( $_SERVER['REQUEST_URI'] ) || ( PHP_SAPI != 'cgi-fcgi' && preg_match( '/^Microsoft-IIS\//', $_SERVER['SERVER_SOFTWARE'] ) ) ) { 70 71 if ( isset( $_SERVER['HTTP_X_ORIGINAL_URL'] ) ) { 72 // IIS Mod-Rewrite. 73 $_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_ORIGINAL_URL']; 74 } elseif ( isset( $_SERVER['HTTP_X_REWRITE_URL'] ) ) { 75 // IIS Isapi_Rewrite. 76 $_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_REWRITE_URL']; 77 } else { 78 // Use ORIG_PATH_INFO if there is no PATH_INFO. 79 if ( ! isset( $_SERVER['PATH_INFO'] ) && isset( $_SERVER['ORIG_PATH_INFO'] ) ) { 80 $_SERVER['PATH_INFO'] = $_SERVER['ORIG_PATH_INFO']; 81 } 82 83 // Some IIS + PHP configurations put the script-name in the path-info (no need to append it twice). 84 if ( isset( $_SERVER['PATH_INFO'] ) ) { 85 if ( $_SERVER['PATH_INFO'] == $_SERVER['SCRIPT_NAME'] ) { 86 $_SERVER['REQUEST_URI'] = $_SERVER['PATH_INFO']; 87 } else { 88 $_SERVER['REQUEST_URI'] = $_SERVER['SCRIPT_NAME'] . $_SERVER['PATH_INFO']; 89 } 90 } 91 92 // Append the query string if it exists and isn't null. 93 if ( ! empty( $_SERVER['QUERY_STRING'] ) ) { 94 $_SERVER['REQUEST_URI'] .= '?' . $_SERVER['QUERY_STRING']; 95 } 96 } 97 } 98 99 // Fix for PHP as CGI hosts that set SCRIPT_FILENAME to something ending in php.cgi for all requests. 100 if ( isset( $_SERVER['SCRIPT_FILENAME'] ) && ( strpos( $_SERVER['SCRIPT_FILENAME'], 'php.cgi' ) == strlen( $_SERVER['SCRIPT_FILENAME'] ) - 7 ) ) { 101 $_SERVER['SCRIPT_FILENAME'] = $_SERVER['PATH_TRANSLATED']; 102 } 103 104 // Fix for Dreamhost and other PHP as CGI hosts. 105 if ( strpos( $_SERVER['SCRIPT_NAME'], 'php.cgi' ) !== false ) { 106 unset( $_SERVER['PATH_INFO'] ); 107 } 108 109 // Fix empty PHP_SELF. 110 $PHP_SELF = $_SERVER['PHP_SELF']; 111 if ( empty( $PHP_SELF ) ) { 112 $_SERVER['PHP_SELF'] = preg_replace( '/(\?.*)?$/', '', $_SERVER['REQUEST_URI'] ); 113 $PHP_SELF = $_SERVER['PHP_SELF']; 114 } 115 } 116 117 /** 118 * Check for the required PHP version, and the MySQL extension or 119 * a database drop-in. 120 * 121 * Dies if requirements are not met. 122 * 123 * @since 3.0.0 124 * @access private 125 * 126 * @global string $required_php_version The required PHP version string. 127 * @global string $wp_version The WordPress version string. 128 */ 129 function wp_check_php_mysql_versions() { 130 global $required_php_version, $wp_version; 131 $php_version = phpversion(); 132 133 if ( version_compare( $required_php_version, $php_version, '>' ) ) { 134 $protocol = wp_get_server_protocol(); 135 header( sprintf( '%s 500 Internal Server Error', $protocol ), true, 500 ); 136 header( 'Content-Type: text/html; charset=utf-8' ); 137 printf( 'Your server is running PHP version %1$s but WordPress %2$s requires at least %3$s.', $php_version, $wp_version, $required_php_version ); 138 exit( 1 ); 139 } 140 141 if ( ! extension_loaded( 'mysql' ) && ! extension_loaded( 'mysqli' ) && ! extension_loaded( 'mysqlnd' ) && ! file_exists( WP_CONTENT_DIR . '/db.php' ) ) { 142 require_once ABSPATH . WPINC . '/functions.php'; 143 wp_load_translations_early(); 144 $args = array( 145 'exit' => false, 146 'code' => 'mysql_not_found', 147 ); 148 wp_die( 149 __( 'Your PHP installation appears to be missing the MySQL extension which is required by WordPress.' ), 150 __( 'Requirements Not Met' ), 151 $args 152 ); 153 exit( 1 ); 154 } 155 } 156 157 /** 158 * Don't load all of WordPress when handling a favicon.ico request. 159 * 160 * Instead, send the headers for a zero-length favicon and bail. 161 * 162 * @since 3.0.0 163 * @deprecated 5.4.0 Deprecated in favor of do_favicon(). 164 */ 165 function wp_favicon_request() { 166 if ( '/favicon.ico' == $_SERVER['REQUEST_URI'] ) { 167 header( 'Content-Type: image/vnd.microsoft.icon' ); 168 exit; 169 } 170 } 171 172 /** 173 * Die with a maintenance message when conditions are met. 174 * 175 * Checks for a file in the WordPress root directory named ".maintenance". 176 * This file will contain the variable $upgrading, set to the time the file 177 * was created. If the file was created less than 10 minutes ago, WordPress 178 * enters maintenance mode and displays a message. 179 * 180 * The default message can be replaced by using a drop-in (maintenance.php in 181 * the wp-content directory). 182 * 183 * @since 3.0.0 184 * @access private 185 * 186 * @global int $upgrading the unix timestamp marking when upgrading WordPress began. 187 */ 188 function wp_maintenance() { 189 if ( ! file_exists( ABSPATH . '.maintenance' ) || wp_installing() ) { 190 return; 191 } 192 193 global $upgrading; 194 195 require ABSPATH . '.maintenance'; 196 // If the $upgrading timestamp is older than 10 minutes, don't die. 197 if ( ( time() - $upgrading ) >= 600 ) { 198 return; 199 } 200 201 /** 202 * Filters whether to enable maintenance mode. 203 * 204 * This filter runs before it can be used by plugins. It is designed for 205 * non-web runtimes. If this filter returns true, maintenance mode will be 206 * active and the request will end. If false, the request will be allowed to 207 * continue processing even if maintenance mode should be active. 208 * 209 * @since 4.6.0 210 * 211 * @param bool $enable_checks Whether to enable maintenance mode. Default true. 212 * @param int $upgrading The timestamp set in the .maintenance file. 213 */ 214 if ( ! apply_filters( 'enable_maintenance_mode', true, $upgrading ) ) { 215 return; 216 } 217 218 if ( file_exists( WP_CONTENT_DIR . '/maintenance.php' ) ) { 219 require_once WP_CONTENT_DIR . '/maintenance.php'; 220 die(); 221 } 222 223 require_once ABSPATH . WPINC . '/functions.php'; 224 wp_load_translations_early(); 225 226 header( 'Retry-After: 600' ); 227 228 wp_die( 229 __( 'Briefly unavailable for scheduled maintenance. Check back in a minute.' ), 230 __( 'Maintenance' ), 231 503 232 ); 233 } 234 235 /** 236 * Start the WordPress micro-timer. 237 * 238 * @since 0.71 239 * @access private 240 * 241 * @global float $timestart Unix timestamp set at the beginning of the page load. 242 * @see timer_stop() 243 * 244 * @return bool Always returns true. 245 */ 246 function timer_start() { 247 global $timestart; 248 $timestart = microtime( true ); 249 return true; 250 } 251 252 /** 253 * Retrieve or display the time from the page start to when function is called. 254 * 255 * @since 0.71 256 * 257 * @global float $timestart Seconds from when timer_start() is called. 258 * @global float $timeend Seconds from when function is called. 259 * 260 * @param int|bool $display Whether to echo or return the results. Accepts 0|false for return, 261 * 1|true for echo. Default 0|false. 262 * @param int $precision The number of digits from the right of the decimal to display. 263 * Default 3. 264 * @return string The "second.microsecond" finished time calculation. The number is formatted 265 * for human consumption, both localized and rounded. 266 */ 267 function timer_stop( $display = 0, $precision = 3 ) { 268 global $timestart, $timeend; 269 $timeend = microtime( true ); 270 $timetotal = $timeend - $timestart; 271 $r = ( function_exists( 'number_format_i18n' ) ) ? number_format_i18n( $timetotal, $precision ) : number_format( $timetotal, $precision ); 272 if ( $display ) { 273 echo $r; 274 } 275 return $r; 276 } 277 278 /** 279 * Set PHP error reporting based on WordPress debug settings. 280 * 281 * Uses three constants: `WP_DEBUG`, `WP_DEBUG_DISPLAY`, and `WP_DEBUG_LOG`. 282 * All three can be defined in wp-config.php. By default, `WP_DEBUG` and 283 * `WP_DEBUG_LOG` are set to false, and `WP_DEBUG_DISPLAY` is set to true. 284 * 285 * When `WP_DEBUG` is true, all PHP notices are reported. WordPress will also 286 * display internal notices: when a deprecated WordPress function, function 287 * argument, or file is used. Deprecated code may be removed from a later 288 * version. 289 * 290 * It is strongly recommended that plugin and theme developers use `WP_DEBUG` 291 * in their development environments. 292 * 293 * `WP_DEBUG_DISPLAY` and `WP_DEBUG_LOG` perform no function unless `WP_DEBUG` 294 * is true. 295 * 296 * When `WP_DEBUG_DISPLAY` is true, WordPress will force errors to be displayed. 297 * `WP_DEBUG_DISPLAY` defaults to true. Defining it as null prevents WordPress 298 * from changing the global configuration setting. Defining `WP_DEBUG_DISPLAY` 299 * as false will force errors to be hidden. 300 * 301 * When `WP_DEBUG_LOG` is true, errors will be logged to `wp-content/debug.log`. 302 * When `WP_DEBUG_LOG` is a valid path, errors will be logged to the specified file. 303 * 304 * Errors are never displayed for XML-RPC, REST, and Ajax requests. 305 * 306 * @since 3.0.0 307 * @since 5.1.0 `WP_DEBUG_LOG` can be a file path. 308 * @access private 309 */ 310 function wp_debug_mode() { 311 /** 312 * Filters whether to allow the debug mode check to occur. 313 * 314 * This filter runs before it can be used by plugins. It is designed for 315 * non-web run-times. Returning false causes the `WP_DEBUG` and related 316 * constants to not be checked and the default PHP values for errors 317 * will be used unless you take care to update them yourself. 318 * 319 * @since 4.6.0 320 * 321 * @param bool $enable_debug_mode Whether to enable debug mode checks to occur. Default true. 322 */ 323 if ( ! apply_filters( 'enable_wp_debug_mode_checks', true ) ) { 324 return; 325 } 326 327 if ( WP_DEBUG ) { 328 error_reporting( E_ALL ); 329 330 if ( WP_DEBUG_DISPLAY ) { 331 ini_set( 'display_errors', 1 ); 332 } elseif ( null !== WP_DEBUG_DISPLAY ) { 333 ini_set( 'display_errors', 0 ); 334 } 335 336 if ( in_array( strtolower( (string) WP_DEBUG_LOG ), array( 'true', '1' ), true ) ) { 337 $log_path = WP_CONTENT_DIR . '/debug.log'; 338 } elseif ( is_string( WP_DEBUG_LOG ) ) { 339 $log_path = WP_DEBUG_LOG; 340 } else { 341 $log_path = false; 342 } 343 344 if ( $log_path ) { 345 ini_set( 'log_errors', 1 ); 346 ini_set( 'error_log', $log_path ); 347 } 348 } else { 349 error_reporting( E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_ERROR | E_WARNING | E_PARSE | E_USER_ERROR | E_USER_WARNING | E_RECOVERABLE_ERROR ); 350 } 351 352 if ( defined( 'XMLRPC_REQUEST' ) || defined( 'REST_REQUEST' ) || ( defined( 'WP_INSTALLING' ) && WP_INSTALLING ) || wp_doing_ajax() || wp_is_json_request() ) { 353 ini_set( 'display_errors', 0 ); 354 } 355 } 356 357 /** 358 * Set the location of the language directory. 359 * 360 * To set directory manually, define the `WP_LANG_DIR` constant 361 * in wp-config.php. 362 * 363 * If the language directory exists within `WP_CONTENT_DIR`, it 364 * is used. Otherwise the language directory is assumed to live 365 * in `WPINC`. 366 * 367 * @since 3.0.0 368 * @access private 369 */ 370 function wp_set_lang_dir() { 371 if ( ! defined( 'WP_LANG_DIR' ) ) { 372 if ( file_exists( WP_CONTENT_DIR . '/languages' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) || ! @is_dir( ABSPATH . WPINC . '/languages' ) ) { 373 /** 374 * Server path of the language directory. 375 * 376 * No leading slash, no trailing slash, full path, not relative to ABSPATH 377 * 378 * @since 2.1.0 379 */ 380 define( 'WP_LANG_DIR', WP_CONTENT_DIR . '/languages' ); 381 if ( ! defined( 'LANGDIR' ) ) { 382 // Old static relative path maintained for limited backward compatibility - won't work in some cases. 383 define( 'LANGDIR', 'wp-content/languages' ); 384 } 385 } else { 386 /** 387 * Server path of the language directory. 388 * 389 * No leading slash, no trailing slash, full path, not relative to `ABSPATH`. 390 * 391 * @since 2.1.0 392 */ 393 define( 'WP_LANG_DIR', ABSPATH . WPINC . '/languages' ); 394 if ( ! defined( 'LANGDIR' ) ) { 395 // Old relative path maintained for backward compatibility. 396 define( 'LANGDIR', WPINC . '/languages' ); 397 } 398 } 399 } 400 } 401 402 /** 403 * Load the database class file and instantiate the `$wpdb` global. 404 * 405 * @since 2.5.0 406 * 407 * @global wpdb $wpdb WordPress database abstraction object. 408 */ 409 function require_wp_db() { 410 global $wpdb; 411 412 require_once ABSPATH . WPINC . '/wp-db.php'; 413 if ( file_exists( WP_CONTENT_DIR . '/db.php' ) ) { 414 require_once WP_CONTENT_DIR . '/db.php'; 415 } 416 417 if ( isset( $wpdb ) ) { 418 return; 419 } 420 421 $dbuser = defined( 'DB_USER' ) ? DB_USER : ''; 422 $dbpassword = defined( 'DB_PASSWORD' ) ? DB_PASSWORD : ''; 423 $dbname = defined( 'DB_NAME' ) ? DB_NAME : ''; 424 $dbhost = defined( 'DB_HOST' ) ? DB_HOST : ''; 425 426 $wpdb = new wpdb( $dbuser, $dbpassword, $dbname, $dbhost ); 427 } 428 429 /** 430 * Set the database table prefix and the format specifiers for database 431 * table columns. 432 * 433 * Columns not listed here default to `%s`. 434 * 435 * @since 3.0.0 436 * @access private 437 * 438 * @global wpdb $wpdb WordPress database abstraction object. 439 * @global string $table_prefix The database table prefix. 440 */ 441 function wp_set_wpdb_vars() { 442 global $wpdb, $table_prefix; 443 if ( ! empty( $wpdb->error ) ) { 444 dead_db(); 445 } 446 447 $wpdb->field_types = array( 448 'post_author' => '%d', 449 'post_parent' => '%d', 450 'menu_order' => '%d', 451 'term_id' => '%d', 452 'term_group' => '%d', 453 'term_taxonomy_id' => '%d', 454 'parent' => '%d', 455 'count' => '%d', 456 'object_id' => '%d', 457 'term_order' => '%d', 458 'ID' => '%d', 459 'comment_ID' => '%d', 460 'comment_post_ID' => '%d', 461 'comment_parent' => '%d', 462 'user_id' => '%d', 463 'link_id' => '%d', 464 'link_owner' => '%d', 465 'link_rating' => '%d', 466 'option_id' => '%d', 467 'blog_id' => '%d', 468 'meta_id' => '%d', 469 'post_id' => '%d', 470 'user_status' => '%d', 471 'umeta_id' => '%d', 472 'comment_karma' => '%d', 473 'comment_count' => '%d', 474 // Multisite: 475 'active' => '%d', 476 'cat_id' => '%d', 477 'deleted' => '%d', 478 'lang_id' => '%d', 479 'mature' => '%d', 480 'public' => '%d', 481 'site_id' => '%d', 482 'spam' => '%d', 483 ); 484 485 $prefix = $wpdb->set_prefix( $table_prefix ); 486 487 if ( is_wp_error( $prefix ) ) { 488 wp_load_translations_early(); 489 wp_die( 490 sprintf( 491 /* translators: 1: $table_prefix, 2: wp-config.php */ 492 __( '<strong>Error</strong>: %1$s in %2$s can only contain numbers, letters, and underscores.' ), 493 '<code>$table_prefix</code>', 494 '<code>wp-config.php</code>' 495 ) 496 ); 497 } 498 } 499 500 /** 501 * Toggle `$_wp_using_ext_object_cache` on and off without directly 502 * touching global. 503 * 504 * @since 3.7.0 505 * 506 * @global bool $_wp_using_ext_object_cache 507 * 508 * @param bool $using Whether external object cache is being used. 509 * @return bool The current 'using' setting. 510 */ 511 function wp_using_ext_object_cache( $using = null ) { 512 global $_wp_using_ext_object_cache; 513 $current_using = $_wp_using_ext_object_cache; 514 if ( null !== $using ) { 515 $_wp_using_ext_object_cache = $using; 516 } 517 return $current_using; 518 } 519 520 /** 521 * Start the WordPress object cache. 522 * 523 * If an object-cache.php file exists in the wp-content directory, 524 * it uses that drop-in as an external object cache. 525 * 526 * @since 3.0.0 527 * @access private 528 * 529 * @global array $wp_filter Stores all of the filters. 530 */ 531 function wp_start_object_cache() { 532 global $wp_filter; 533 static $first_init = true; 534 535 // Only perform the following checks once. 536 if ( $first_init ) { 537 if ( ! function_exists( 'wp_cache_init' ) ) { 538 /* 539 * This is the normal situation. First-run of this function. No 540 * caching backend has been loaded. 541 * 542 * We try to load a custom caching backend, and then, if it 543 * results in a wp_cache_init() function existing, we note 544 * that an external object cache is being used. 545 */ 546 if ( file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) { 547 require_once WP_CONTENT_DIR . '/object-cache.php'; 548 if ( function_exists( 'wp_cache_init' ) ) { 549 wp_using_ext_object_cache( true ); 550 } 551 552 // Re-initialize any hooks added manually by object-cache.php. 553 if ( $wp_filter ) { 554 $wp_filter = WP_Hook::build_preinitialized_hooks( $wp_filter ); 555 } 556 } 557 } elseif ( ! wp_using_ext_object_cache() && file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) { 558 /* 559 * Sometimes advanced-cache.php can load object-cache.php before 560 * this function is run. This breaks the function_exists() check 561 * above and can result in wp_using_ext_object_cache() returning 562 * false when actually an external cache is in use. 563 */ 564 wp_using_ext_object_cache( true ); 565 } 566 } 567 568 if ( ! wp_using_ext_object_cache() ) { 569 require_once ABSPATH . WPINC . '/cache.php'; 570 } 571 572 /* 573 * If cache supports reset, reset instead of init if already 574 * initialized. Reset signals to the cache that global IDs 575 * have changed and it may need to update keys and cleanup caches. 576 */ 577 if ( ! $first_init && function_exists( 'wp_cache_switch_to_blog' ) ) { 578 wp_cache_switch_to_blog( get_current_blog_id() ); 579 } elseif ( function_exists( 'wp_cache_init' ) ) { 580 wp_cache_init(); 581 } 582 583 if ( function_exists( 'wp_cache_add_global_groups' ) ) { 584 wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'useremail', 'userslugs', 'site-transient', 'site-options', 'blog-lookup', 'blog-details', 'site-details', 'rss', 'global-posts', 'blog-id-cache', 'networks', 'sites', 'blog_meta' ) ); 585 wp_cache_add_non_persistent_groups( array( 'counts', 'plugins' ) ); 586 } 587 588 $first_init = false; 589 } 590 591 /** 592 * Redirect to the installer if WordPress is not installed. 593 * 594 * Dies with an error message when Multisite is enabled. 595 * 596 * @since 3.0.0 597 * @access private 598 */ 599 function wp_not_installed() { 600 if ( is_multisite() ) { 601 if ( ! is_blog_installed() && ! wp_installing() ) { 602 nocache_headers(); 603 604 wp_die( __( 'The site you have requested is not installed properly. Please contact the system administrator.' ) ); 605 } 606 } elseif ( ! is_blog_installed() && ! wp_installing() ) { 607 nocache_headers(); 608 609 require ABSPATH . WPINC . '/kses.php'; 610 require ABSPATH . WPINC . '/pluggable.php'; 611 612 $link = wp_guess_url() . '/wp-admin/install.php'; 613 614 wp_redirect( $link ); 615 die(); 616 } 617 } 618 619 /** 620 * Retrieve an array of must-use plugin files. 621 * 622 * The default directory is wp-content/mu-plugins. To change the default 623 * directory manually, define `WPMU_PLUGIN_DIR` and `WPMU_PLUGIN_URL` 624 * in wp-config.php. 625 * 626 * @since 3.0.0 627 * @access private 628 * 629 * @return string[] Array of absolute paths of files to include. 630 */ 631 function wp_get_mu_plugins() { 632 $mu_plugins = array(); 633 if ( ! is_dir( WPMU_PLUGIN_DIR ) ) { 634 return $mu_plugins; 635 } 636 $dh = opendir( WPMU_PLUGIN_DIR ); 637 if ( ! $dh ) { 638 return $mu_plugins; 639 } 640 while ( ( $plugin = readdir( $dh ) ) !== false ) { 641 if ( substr( $plugin, -4 ) == '.php' ) { 642 $mu_plugins[] = WPMU_PLUGIN_DIR . '/' . $plugin; 643 } 644 } 645 closedir( $dh ); 646 sort( $mu_plugins ); 647 648 return $mu_plugins; 649 } 650 651 /** 652 * Retrieve an array of active and valid plugin files. 653 * 654 * While upgrading or installing WordPress, no plugins are returned. 655 * 656 * The default directory is `wp-content/plugins`. To change the default 657 * directory manually, define `WP_PLUGIN_DIR` and `WP_PLUGIN_URL` 658 * in `wp-config.php`. 659 * 660 * @since 3.0.0 661 * @access private 662 * 663 * @return string[] $plugin_file Array of paths to plugin files relative to the plugins directory. 664 */ 665 function wp_get_active_and_valid_plugins() { 666 $plugins = array(); 667 $active_plugins = (array) get_option( 'active_plugins', array() ); 668 669 // Check for hacks file if the option is enabled. 670 if ( get_option( 'hack_file' ) && file_exists( ABSPATH . 'my-hacks.php' ) ) { 671 _deprecated_file( 'my-hacks.php', '1.5.0' ); 672 array_unshift( $plugins, ABSPATH . 'my-hacks.php' ); 673 } 674 675 if ( empty( $active_plugins ) || wp_installing() ) { 676 return $plugins; 677 } 678 679 $network_plugins = is_multisite() ? wp_get_active_network_plugins() : false; 680 681 foreach ( $active_plugins as $plugin ) { 682 if ( ! validate_file( $plugin ) // $plugin must validate as file. 683 && '.php' == substr( $plugin, -4 ) // $plugin must end with '.php'. 684 && file_exists( WP_PLUGIN_DIR . '/' . $plugin ) // $plugin must exist. 685 // Not already included as a network plugin. 686 && ( ! $network_plugins || ! in_array( WP_PLUGIN_DIR . '/' . $plugin, $network_plugins ) ) 687 ) { 688 $plugins[] = WP_PLUGIN_DIR . '/' . $plugin; 689 } 690 } 691 692 /* 693 * Remove plugins from the list of active plugins when we're on an endpoint 694 * that should be protected against WSODs and the plugin is paused. 695 */ 696 if ( wp_is_recovery_mode() ) { 697 $plugins = wp_skip_paused_plugins( $plugins ); 698 } 699 700 return $plugins; 701 } 702 703 /** 704 * Filters a given list of plugins, removing any paused plugins from it. 705 * 706 * @since 5.2.0 707 * 708 * @param string[] $plugins Array of absolute plugin main file paths. 709 * @return string[] Filtered array of plugins, without any paused plugins. 710 */ 711 function wp_skip_paused_plugins( array $plugins ) { 712 $paused_plugins = wp_paused_plugins()->get_all(); 713 714 if ( empty( $paused_plugins ) ) { 715 return $plugins; 716 } 717 718 foreach ( $plugins as $index => $plugin ) { 719 list( $plugin ) = explode( '/', plugin_basename( $plugin ) ); 720 721 if ( array_key_exists( $plugin, $paused_plugins ) ) { 722 unset( $plugins[ $index ] ); 723 724 // Store list of paused plugins for displaying an admin notice. 725 $GLOBALS['_paused_plugins'][ $plugin ] = $paused_plugins[ $plugin ]; 726 } 727 } 728 729 return $plugins; 730 } 731 732 /** 733 * Retrieves an array of active and valid themes. 734 * 735 * While upgrading or installing WordPress, no themes are returned. 736 * 737 * @since 5.1.0 738 * @access private 739 * 740 * @return string[] Array of absolute paths to theme directories. 741 */ 742 function wp_get_active_and_valid_themes() { 743 global $pagenow; 744 745 $themes = array(); 746 747 if ( wp_installing() && 'wp-activate.php' !== $pagenow ) { 748 return $themes; 749 } 750 751 if ( TEMPLATEPATH !== STYLESHEETPATH ) { 752 $themes[] = STYLESHEETPATH; 753 } 754 755 $themes[] = TEMPLATEPATH; 756 757 /* 758 * Remove themes from the list of active themes when we're on an endpoint 759 * that should be protected against WSODs and the theme is paused. 760 */ 761 if ( wp_is_recovery_mode() ) { 762 $themes = wp_skip_paused_themes( $themes ); 763 764 // If no active and valid themes exist, skip loading themes. 765 if ( empty( $themes ) ) { 766 add_filter( 'wp_using_themes', '__return_false' ); 767 } 768 } 769 770 return $themes; 771 } 772 773 /** 774 * Filters a given list of themes, removing any paused themes from it. 775 * 776 * @since 5.2.0 777 * 778 * @param string[] $themes Array of absolute theme directory paths. 779 * @return string[] Filtered array of absolute paths to themes, without any paused themes. 780 */ 781 function wp_skip_paused_themes( array $themes ) { 782 $paused_themes = wp_paused_themes()->get_all(); 783 784 if ( empty( $paused_themes ) ) { 785 return $themes; 786 } 787 788 foreach ( $themes as $index => $theme ) { 789 $theme = basename( $theme ); 790 791 if ( array_key_exists( $theme, $paused_themes ) ) { 792 unset( $themes[ $index ] ); 793 794 // Store list of paused themes for displaying an admin notice. 795 $GLOBALS['_paused_themes'][ $theme ] = $paused_themes[ $theme ]; 796 } 797 } 798 799 return $themes; 800 } 801 802 /** 803 * Is WordPress in Recovery Mode. 804 * 805 * In this mode, plugins or themes that cause WSODs will be paused. 806 * 807 * @since 5.2.0 808 * 809 * @return bool 810 */ 811 function wp_is_recovery_mode() { 812 return wp_recovery_mode()->is_active(); 813 } 814 815 /** 816 * Determines whether we are currently on an endpoint that should be protected against WSODs. 817 * 818 * @since 5.2.0 819 * 820 * @return bool True if the current endpoint should be protected. 821 */ 822 function is_protected_endpoint() { 823 // Protect login pages. 824 if ( isset( $GLOBALS['pagenow'] ) && 'wp-login.php' === $GLOBALS['pagenow'] ) { 825 return true; 826 } 827 828 // Protect the admin backend. 829 if ( is_admin() && ! wp_doing_ajax() ) { 830 return true; 831 } 832 833 // Protect AJAX actions that could help resolve a fatal error should be available. 834 if ( is_protected_ajax_action() ) { 835 return true; 836 } 837 838 /** 839 * Filters whether the current request is against a protected endpoint. 840 * 841 * This filter is only fired when an endpoint is requested which is not already protected by 842 * WordPress core. As such, it exclusively allows providing further protected endpoints in 843 * addition to the admin backend, login pages and protected AJAX actions. 844 * 845 * @since 5.2.0 846 * 847 * @param bool $is_protected_endpoint Whether the currently requested endpoint is protected. Default false. 848 */ 849 return (bool) apply_filters( 'is_protected_endpoint', false ); 850 } 851 852 /** 853 * Determines whether we are currently handling an AJAX action that should be protected against WSODs. 854 * 855 * @since 5.2.0 856 * 857 * @return bool True if the current AJAX action should be protected. 858 */ 859 function is_protected_ajax_action() { 860 if ( ! wp_doing_ajax() ) { 861 return false; 862 } 863 864 if ( ! isset( $_REQUEST['action'] ) ) { 865 return false; 866 } 867 868 $actions_to_protect = array( 869 'edit-theme-plugin-file', // Saving changes in the core code editor. 870 'heartbeat', // Keep the heart beating. 871 'install-plugin', // Installing a new plugin. 872 'install-theme', // Installing a new theme. 873 'search-plugins', // Searching in the list of plugins. 874 'search-install-plugins', // Searching for a plugin in the plugin install screen. 875 'update-plugin', // Update an existing plugin. 876 'update-theme', // Update an existing theme. 877 ); 878 879 /** 880 * Filters the array of protected AJAX actions. 881 * 882 * This filter is only fired when doing AJAX and the AJAX request has an 'action' property. 883 * 884 * @since 5.2.0 885 * 886 * @param string[] $actions_to_protect Array of strings with AJAX actions to protect. 887 */ 888 $actions_to_protect = (array) apply_filters( 'wp_protected_ajax_actions', $actions_to_protect ); 889 890 if ( ! in_array( $_REQUEST['action'], $actions_to_protect, true ) ) { 891 return false; 892 } 893 894 return true; 895 } 896 897 /** 898 * Set internal encoding. 899 * 900 * In most cases the default internal encoding is latin1, which is 901 * of no use, since we want to use the `mb_` functions for `utf-8` strings. 902 * 903 * @since 3.0.0 904 * @access private 905 */ 906 function wp_set_internal_encoding() { 907 if ( function_exists( 'mb_internal_encoding' ) ) { 908 $charset = get_option( 'blog_charset' ); 909 // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged 910 if ( ! $charset || ! @mb_internal_encoding( $charset ) ) { 911 mb_internal_encoding( 'UTF-8' ); 912 } 913 } 914 } 915 916 /** 917 * Add magic quotes to `$_GET`, `$_POST`, `$_COOKIE`, and `$_SERVER`. 918 * 919 * Also forces `$_REQUEST` to be `$_GET + $_POST`. If `$_SERVER`, 920 * `$_COOKIE`, or `$_ENV` are needed, use those superglobals directly. 921 * 922 * @since 3.0.0 923 * @access private 924 */ 925 function wp_magic_quotes() { 926 // Escape with wpdb. 927 $_GET = add_magic_quotes( $_GET ); 928 $_POST = add_magic_quotes( $_POST ); 929 $_COOKIE = add_magic_quotes( $_COOKIE ); 930 $_SERVER = add_magic_quotes( $_SERVER ); 931 932 /* 933 * Revert the type change to string for two indexes which should retain their proper type. 934 * Among other things, this preserves compatibility of WP with PHPUnit Code Coverage generation. 935 */ 936 if ( isset( $_SERVER['REQUEST_TIME'] ) ) { 937 $_SERVER['REQUEST_TIME'] = (int) $_SERVER['REQUEST_TIME']; 938 } 939 940 if ( isset( $_SERVER['REQUEST_TIME_FLOAT'] ) ) { 941 $_SERVER['REQUEST_TIME_FLOAT'] = (float) $_SERVER['REQUEST_TIME_FLOAT']; 942 } 943 944 // Force REQUEST to be GET + POST. 945 $_REQUEST = array_merge( $_GET, $_POST ); 946 } 947 948 /** 949 * Runs just before PHP shuts down execution. 950 * 951 * @since 1.2.0 952 * @access private 953 */ 954 function shutdown_action_hook() { 955 /** 956 * Fires just before PHP shuts down execution. 957 * 958 * @since 1.2.0 959 */ 960 do_action( 'shutdown' ); 961 962 wp_cache_close(); 963 } 964 965 /** 966 * Copy an object. 967 * 968 * @since 2.7.0 969 * @deprecated 3.2.0 970 * 971 * @param object $object The object to clone. 972 * @return object The cloned object. 973 */ 974 function wp_clone( $object ) { 975 // Use parens for clone to accommodate PHP 4. See #17880. 976 return clone( $object ); 977 } 978 979 /** 980 * Determines whether the current request is for an administrative interface page. 981 * 982 * Does not check if the user is an administrator; use current_user_can() 983 * for checking roles and capabilities. 984 * 985 * For more information on this and similar theme functions, check out 986 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 987 * Conditional Tags} article in the Theme Developer Handbook. 988 * 989 * @since 1.5.1 990 * 991 * @global WP_Screen $current_screen WordPress current screen object. 992 * 993 * @return bool True if inside WordPress administration interface, false otherwise. 994 */ 995 function is_admin() { 996 if ( isset( $GLOBALS['current_screen'] ) ) { 997 return $GLOBALS['current_screen']->in_admin(); 998 } elseif ( defined( 'WP_ADMIN' ) ) { 999 return WP_ADMIN; 1000 } 1001 1002 return false; 1003 } 1004 1005 /** 1006 * Whether the current request is for a site's administrative interface. 1007 * 1008 * e.g. `/wp-admin/` 1009 * 1010 * Does not check if the user is an administrator; use current_user_can() 1011 * for checking roles and capabilities. 1012 * 1013 * @since 3.1.0 1014 * 1015 * @global WP_Screen $current_screen WordPress current screen object. 1016 * 1017 * @return bool True if inside WordPress blog administration pages. 1018 */ 1019 function is_blog_admin() { 1020 if ( isset( $GLOBALS['current_screen'] ) ) { 1021 return $GLOBALS['current_screen']->in_admin( 'site' ); 1022 } elseif ( defined( 'WP_BLOG_ADMIN' ) ) { 1023 return WP_BLOG_ADMIN; 1024 } 1025 1026 return false; 1027 } 1028 1029 /** 1030 * Whether the current request is for the network administrative interface. 1031 * 1032 * e.g. `/wp-admin/network/` 1033 * 1034 * Does not check if the user is an administrator; use current_user_can() 1035 * for checking roles and capabilities. 1036 * 1037 * Does not check if the site is a Multisite network; use is_multisite() 1038 * for checking if Multisite is enabled. 1039 * 1040 * @since 3.1.0 1041 * 1042 * @global WP_Screen $current_screen WordPress current screen object. 1043 * 1044 * @return bool True if inside WordPress network administration pages. 1045 */ 1046 function is_network_admin() { 1047 if ( isset( $GLOBALS['current_screen'] ) ) { 1048 return $GLOBALS['current_screen']->in_admin( 'network' ); 1049 } elseif ( defined( 'WP_NETWORK_ADMIN' ) ) { 1050 return WP_NETWORK_ADMIN; 1051 } 1052 1053 return false; 1054 } 1055 1056 /** 1057 * Whether the current request is for a user admin screen. 1058 * 1059 * e.g. `/wp-admin/user/` 1060 * 1061 * Does not check if the user is an administrator; use current_user_can() 1062 * for checking roles and capabilities. 1063 * 1064 * @since 3.1.0 1065 * 1066 * @global WP_Screen $current_screen WordPress current screen object. 1067 * 1068 * @return bool True if inside WordPress user administration pages. 1069 */ 1070 function is_user_admin() { 1071 if ( isset( $GLOBALS['current_screen'] ) ) { 1072 return $GLOBALS['current_screen']->in_admin( 'user' ); 1073 } elseif ( defined( 'WP_USER_ADMIN' ) ) { 1074 return WP_USER_ADMIN; 1075 } 1076 1077 return false; 1078 } 1079 1080 /** 1081 * If Multisite is enabled. 1082 * 1083 * @since 3.0.0 1084 * 1085 * @return bool True if Multisite is enabled, false otherwise. 1086 */ 1087 function is_multisite() { 1088 if ( defined( 'MULTISITE' ) ) { 1089 return MULTISITE; 1090 } 1091 1092 if ( defined( 'SUBDOMAIN_INSTALL' ) || defined( 'VHOST' ) || defined( 'SUNRISE' ) ) { 1093 return true; 1094 } 1095 1096 return false; 1097 } 1098 1099 /** 1100 * Retrieve the current site ID. 1101 * 1102 * @since 3.1.0 1103 * 1104 * @global int $blog_id 1105 * 1106 * @return int Site ID. 1107 */ 1108 function get_current_blog_id() { 1109 global $blog_id; 1110 return absint( $blog_id ); 1111 } 1112 1113 /** 1114 * Retrieves the current network ID. 1115 * 1116 * @since 4.6.0 1117 * 1118 * @return int The ID of the current network. 1119 */ 1120 function get_current_network_id() { 1121 if ( ! is_multisite() ) { 1122 return 1; 1123 } 1124 1125 $current_network = get_network(); 1126 1127 if ( ! isset( $current_network->id ) ) { 1128 return get_main_network_id(); 1129 } 1130 1131 return absint( $current_network->id ); 1132 } 1133 1134 /** 1135 * Attempt an early load of translations. 1136 * 1137 * Used for errors encountered during the initial loading process, before 1138 * the locale has been properly detected and loaded. 1139 * 1140 * Designed for unusual load sequences (like setup-config.php) or for when 1141 * the script will then terminate with an error, otherwise there is a risk 1142 * that a file can be double-included. 1143 * 1144 * @since 3.4.0 1145 * @access private 1146 * 1147 * @global WP_Locale $wp_locale WordPress date and time locale object. 1148 * 1149 * @staticvar bool $loaded 1150 */ 1151 function wp_load_translations_early() { 1152 global $wp_locale; 1153 1154 static $loaded = false; 1155 if ( $loaded ) { 1156 return; 1157 } 1158 $loaded = true; 1159 1160 if ( function_exists( 'did_action' ) && did_action( 'init' ) ) { 1161 return; 1162 } 1163 1164 // We need $wp_local_package. 1165 require ABSPATH . WPINC . '/version.php'; 1166 1167 // Translation and localization. 1168 require_once ABSPATH . WPINC . '/pomo/mo.php'; 1169 require_once ABSPATH . WPINC . '/l10n.php'; 1170 require_once ABSPATH . WPINC . '/class-wp-locale.php'; 1171 require_once ABSPATH . WPINC . '/class-wp-locale-switcher.php'; 1172 1173 // General libraries. 1174 require_once ABSPATH . WPINC . '/plugin.php'; 1175 1176 $locales = array(); 1177 $locations = array(); 1178 1179 while ( true ) { 1180 if ( defined( 'WPLANG' ) ) { 1181 if ( '' == WPLANG ) { 1182 break; 1183 } 1184 $locales[] = WPLANG; 1185 } 1186 1187 if ( isset( $wp_local_package ) ) { 1188 $locales[] = $wp_local_package; 1189 } 1190 1191 if ( ! $locales ) { 1192 break; 1193 } 1194 1195 if ( defined( 'WP_LANG_DIR' ) && @is_dir( WP_LANG_DIR ) ) { 1196 $locations[] = WP_LANG_DIR; 1197 } 1198 1199 if ( defined( 'WP_CONTENT_DIR' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) ) { 1200 $locations[] = WP_CONTENT_DIR . '/languages'; 1201 } 1202 1203 if ( @is_dir( ABSPATH . 'wp-content/languages' ) ) { 1204 $locations[] = ABSPATH . 'wp-content/languages'; 1205 } 1206 1207 if ( @is_dir( ABSPATH . WPINC . '/languages' ) ) { 1208 $locations[] = ABSPATH . WPINC . '/languages'; 1209 } 1210 1211 if ( ! $locations ) { 1212 break; 1213 } 1214 1215 $locations = array_unique( $locations ); 1216 1217 foreach ( $locales as $locale ) { 1218 foreach ( $locations as $location ) { 1219 if ( file_exists( $location . '/' . $locale . '.mo' ) ) { 1220 load_textdomain( 'default', $location . '/' . $locale . '.mo' ); 1221 if ( defined( 'WP_SETUP_CONFIG' ) && file_exists( $location . '/admin-' . $locale . '.mo' ) ) { 1222 load_textdomain( 'default', $location . '/admin-' . $locale . '.mo' ); 1223 } 1224 break 2; 1225 } 1226 } 1227 } 1228 1229 break; 1230 } 1231 1232 $wp_locale = new WP_Locale(); 1233 } 1234 1235 /** 1236 * Check or set whether WordPress is in "installation" mode. 1237 * 1238 * If the `WP_INSTALLING` constant is defined during the bootstrap, `wp_installing()` will default to `true`. 1239 * 1240 * @since 4.4.0 1241 * 1242 * @staticvar bool $installing 1243 * 1244 * @param bool $is_installing Optional. True to set WP into Installing mode, false to turn Installing mode off. 1245 * Omit this parameter if you only want to fetch the current status. 1246 * @return bool True if WP is installing, otherwise false. When a `$is_installing` is passed, the function will 1247 * report whether WP was in installing mode prior to the change to `$is_installing`. 1248 */ 1249 function wp_installing( $is_installing = null ) { 1250 static $installing = null; 1251 1252 // Support for the `WP_INSTALLING` constant, defined before WP is loaded. 1253 if ( is_null( $installing ) ) { 1254 $installing = defined( 'WP_INSTALLING' ) && WP_INSTALLING; 1255 } 1256 1257 if ( ! is_null( $is_installing ) ) { 1258 $old_installing = $installing; 1259 $installing = $is_installing; 1260 return (bool) $old_installing; 1261 } 1262 1263 return (bool) $installing; 1264 } 1265 1266 /** 1267 * Determines if SSL is used. 1268 * 1269 * @since 2.6.0 1270 * @since 4.6.0 Moved from functions.php to load.php. 1271 * 1272 * @return bool True if SSL, otherwise false. 1273 */ 1274 function is_ssl() { 1275 if ( isset( $_SERVER['HTTPS'] ) ) { 1276 if ( 'on' == strtolower( $_SERVER['HTTPS'] ) ) { 1277 return true; 1278 } 1279 1280 if ( '1' == $_SERVER['HTTPS'] ) { 1281 return true; 1282 } 1283 } elseif ( isset( $_SERVER['SERVER_PORT'] ) && ( '443' == $_SERVER['SERVER_PORT'] ) ) { 1284 return true; 1285 } 1286 return false; 1287 } 1288 1289 /** 1290 * Converts a shorthand byte value to an integer byte value. 1291 * 1292 * @since 2.3.0 1293 * @since 4.6.0 Moved from media.php to load.php. 1294 * 1295 * @link https://www.php.net/manual/en/function.ini-get.php 1296 * @link https://www.php.net/manual/en/faq.using.php#faq.using.shorthandbytes 1297 * 1298 * @param string $value A (PHP ini) byte value, either shorthand or ordinary. 1299 * @return int An integer byte value. 1300 */ 1301 function wp_convert_hr_to_bytes( $value ) { 1302 $value = strtolower( trim( $value ) ); 1303 $bytes = (int) $value; 1304 1305 if ( false !== strpos( $value, 'g' ) ) { 1306 $bytes *= GB_IN_BYTES; 1307 } elseif ( false !== strpos( $value, 'm' ) ) { 1308 $bytes *= MB_IN_BYTES; 1309 } elseif ( false !== strpos( $value, 'k' ) ) { 1310 $bytes *= KB_IN_BYTES; 1311 } 1312 1313 // Deal with large (float) values which run into the maximum integer size. 1314 return min( $bytes, PHP_INT_MAX ); 1315 } 1316 1317 /** 1318 * Determines whether a PHP ini value is changeable at runtime. 1319 * 1320 * @since 4.6.0 1321 * 1322 * @staticvar array $ini_all 1323 * 1324 * @link https://www.php.net/manual/en/function.ini-get-all.php 1325 * 1326 * @param string $setting The name of the ini setting to check. 1327 * @return bool True if the value is changeable at runtime. False otherwise. 1328 */ 1329 function wp_is_ini_value_changeable( $setting ) { 1330 static $ini_all; 1331 1332 if ( ! isset( $ini_all ) ) { 1333 $ini_all = false; 1334 // Sometimes `ini_get_all()` is disabled via the `disable_functions` option for "security purposes". 1335 if ( function_exists( 'ini_get_all' ) ) { 1336 $ini_all = ini_get_all(); 1337 } 1338 } 1339 1340 // Bit operator to workaround https://bugs.php.net/bug.php?id=44936 which changes access level to 63 in PHP 5.2.6 - 5.2.17. 1341 if ( isset( $ini_all[ $setting ]['access'] ) && ( INI_ALL === ( $ini_all[ $setting ]['access'] & 7 ) || INI_USER === ( $ini_all[ $setting ]['access'] & 7 ) ) ) { 1342 return true; 1343 } 1344 1345 // If we were unable to retrieve the details, fail gracefully to assume it's changeable. 1346 if ( ! is_array( $ini_all ) ) { 1347 return true; 1348 } 1349 1350 return false; 1351 } 1352 1353 /** 1354 * Determines whether the current request is a WordPress Ajax request. 1355 * 1356 * @since 4.7.0 1357 * 1358 * @return bool True if it's a WordPress Ajax request, false otherwise. 1359 */ 1360 function wp_doing_ajax() { 1361 /** 1362 * Filters whether the current request is a WordPress Ajax request. 1363 * 1364 * @since 4.7.0 1365 * 1366 * @param bool $wp_doing_ajax Whether the current request is a WordPress Ajax request. 1367 */ 1368 return apply_filters( 'wp_doing_ajax', defined( 'DOING_AJAX' ) && DOING_AJAX ); 1369 } 1370 1371 /** 1372 * Determines whether the current request should use themes. 1373 * 1374 * @since 5.1.0 1375 * 1376 * @return bool True if themes should be used, false otherwise. 1377 */ 1378 function wp_using_themes() { 1379 /** 1380 * Filters whether the current request should use themes. 1381 * 1382 * @since 5.1.0 1383 * 1384 * @param bool $wp_using_themes Whether the current request should use themes. 1385 */ 1386 return apply_filters( 'wp_using_themes', defined( 'WP_USE_THEMES' ) && WP_USE_THEMES ); 1387 } 1388 1389 /** 1390 * Determines whether the current request is a WordPress cron request. 1391 * 1392 * @since 4.8.0 1393 * 1394 * @return bool True if it's a WordPress cron request, false otherwise. 1395 */ 1396 function wp_doing_cron() { 1397 /** 1398 * Filters whether the current request is a WordPress cron request. 1399 * 1400 * @since 4.8.0 1401 * 1402 * @param bool $wp_doing_cron Whether the current request is a WordPress cron request. 1403 */ 1404 return apply_filters( 'wp_doing_cron', defined( 'DOING_CRON' ) && DOING_CRON ); 1405 } 1406 1407 /** 1408 * Check whether variable is a WordPress Error. 1409 * 1410 * Returns true if $thing is an object of the WP_Error class. 1411 * 1412 * @since 2.1.0 1413 * 1414 * @param mixed $thing Check if unknown variable is a WP_Error object. 1415 * @return bool True, if WP_Error. False, if not WP_Error. 1416 */ 1417 function is_wp_error( $thing ) { 1418 return ( $thing instanceof WP_Error ); 1419 } 1420 1421 /** 1422 * Determines whether file modifications are allowed. 1423 * 1424 * @since 4.8.0 1425 * 1426 * @param string $context The usage context. 1427 * @return bool True if file modification is allowed, false otherwise. 1428 */ 1429 function wp_is_file_mod_allowed( $context ) { 1430 /** 1431 * Filters whether file modifications are allowed. 1432 * 1433 * @since 4.8.0 1434 * 1435 * @param bool $file_mod_allowed Whether file modifications are allowed. 1436 * @param string $context The usage context. 1437 */ 1438 return apply_filters( 'file_mod_allowed', ! defined( 'DISALLOW_FILE_MODS' ) || ! DISALLOW_FILE_MODS, $context ); 1439 } 1440 1441 /** 1442 * Start scraping edited file errors. 1443 * 1444 * @since 4.9.0 1445 */ 1446 function wp_start_scraping_edited_file_errors() { 1447 if ( ! isset( $_REQUEST['wp_scrape_key'] ) || ! isset( $_REQUEST['wp_scrape_nonce'] ) ) { 1448 return; 1449 } 1450 $key = substr( sanitize_key( wp_unslash( $_REQUEST['wp_scrape_key'] ) ), 0, 32 ); 1451 $nonce = wp_unslash( $_REQUEST['wp_scrape_nonce'] ); 1452 1453 if ( get_transient( 'scrape_key_' . $key ) !== $nonce ) { 1454 echo "###### wp_scraping_result_start:$key ######"; 1455 echo wp_json_encode( 1456 array( 1457 'code' => 'scrape_nonce_failure', 1458 'message' => __( 'Scrape nonce check failed. Please try again.' ), 1459 ) 1460 ); 1461 echo "###### wp_scraping_result_end:$key ######"; 1462 die(); 1463 } 1464 if ( ! defined( 'WP_SANDBOX_SCRAPING' ) ) { 1465 define( 'WP_SANDBOX_SCRAPING', true ); 1466 } 1467 register_shutdown_function( 'wp_finalize_scraping_edited_file_errors', $key ); 1468 } 1469 1470 /** 1471 * Finalize scraping for edited file errors. 1472 * 1473 * @since 4.9.0 1474 * 1475 * @param string $scrape_key Scrape key. 1476 */ 1477 function wp_finalize_scraping_edited_file_errors( $scrape_key ) { 1478 $error = error_get_last(); 1479 echo "\n###### wp_scraping_result_start:$scrape_key ######\n"; 1480 if ( ! empty( $error ) && in_array( $error['type'], array( E_CORE_ERROR, E_COMPILE_ERROR, E_ERROR, E_PARSE, E_USER_ERROR, E_RECOVERABLE_ERROR ), true ) ) { 1481 $error = str_replace( ABSPATH, '', $error ); 1482 echo wp_json_encode( $error ); 1483 } else { 1484 echo wp_json_encode( true ); 1485 } 1486 echo "\n###### wp_scraping_result_end:$scrape_key ######\n"; 1487 } 1488 1489 /** 1490 * Checks whether current request is a JSON request, or is expecting a JSON response. 1491 * 1492 * @since 5.0.0 1493 * 1494 * @return bool True if `Accepts` or `Content-Type` headers contain `application/json`. 1495 * False otherwise. 1496 */ 1497 function wp_is_json_request() { 1498 1499 if ( isset( $_SERVER['HTTP_ACCEPT'] ) && false !== strpos( $_SERVER['HTTP_ACCEPT'], 'application/json' ) ) { 1500 return true; 1501 } 1502 1503 if ( isset( $_SERVER['CONTENT_TYPE'] ) && 'application/json' === $_SERVER['CONTENT_TYPE'] ) { 1504 return true; 1505 } 1506 1507 return false; 1508 1509 } 1510 1511 /** 1512 * Checks whether current request is a JSONP request, or is expecting a JSONP response. 1513 * 1514 * @since 5.2.0 1515 * 1516 * @return bool True if JSONP request, false otherwise. 1517 */ 1518 function wp_is_jsonp_request() { 1519 if ( ! isset( $_GET['_jsonp'] ) ) { 1520 return false; 1521 } 1522 1523 if ( ! function_exists( 'wp_check_jsonp_callback' ) ) { 1524 require_once ABSPATH . WPINC . '/functions.php'; 1525 } 1526 1527 $jsonp_callback = $_GET['_jsonp']; 1528 if ( ! wp_check_jsonp_callback( $jsonp_callback ) ) { 1529 return false; 1530 } 1531 1532 /** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */ 1533 $jsonp_enabled = apply_filters( 'rest_jsonp_enabled', true ); 1534 1535 return $jsonp_enabled; 1536 1537 } 1538 1539 /** 1540 * Checks whether current request is an XML request, or is expecting an XML response. 1541 * 1542 * @since 5.2.0 1543 * 1544 * @return bool True if `Accepts` or `Content-Type` headers contain `text/xml` 1545 * or one of the related MIME types. False otherwise. 1546 */ 1547 function wp_is_xml_request() { 1548 $accepted = array( 1549 'text/xml', 1550 'application/rss+xml', 1551 'application/atom+xml', 1552 'application/rdf+xml', 1553 'text/xml+oembed', 1554 'application/xml+oembed', 1555 ); 1556 1557 if ( isset( $_SERVER['HTTP_ACCEPT'] ) ) { 1558 foreach ( $accepted as $type ) { 1559 if ( false !== strpos( $_SERVER['HTTP_ACCEPT'], $type ) ) { 1560 return true; 1561 } 1562 } 1563 } 1564 1565 if ( isset( $_SERVER['CONTENT_TYPE'] ) && in_array( $_SERVER['CONTENT_TYPE'], $accepted, true ) ) { 1566 return true; 1567 } 1568 1569 return false; 1570 }
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| Generated: Thu Apr 2 01:00:03 2020 | Cross-referenced by PHPXref 0.7.1 |