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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 puts 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 include( 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 // Force REQUEST to be GET + POST. 933 $_REQUEST = array_merge( $_GET, $_POST ); 934 } 935 936 /** 937 * Runs just before PHP shuts down execution. 938 * 939 * @since 1.2.0 940 * @access private 941 */ 942 function shutdown_action_hook() { 943 /** 944 * Fires just before PHP shuts down execution. 945 * 946 * @since 1.2.0 947 */ 948 do_action( 'shutdown' ); 949 950 wp_cache_close(); 951 } 952 953 /** 954 * Copy an object. 955 * 956 * @since 2.7.0 957 * @deprecated 3.2.0 958 * 959 * @param object $object The object to clone. 960 * @return object The cloned object. 961 */ 962 function wp_clone( $object ) { 963 // Use parens for clone to accommodate PHP 4. See #17880 964 return clone( $object ); 965 } 966 967 /** 968 * Determines whether the current request is for an administrative interface page. 969 * 970 * Does not check if the user is an administrator; use current_user_can() 971 * for checking roles and capabilities. 972 * 973 * For more information on this and similar theme functions, check out 974 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 975 * Conditional Tags} article in the Theme Developer Handbook. 976 * 977 * @since 1.5.1 978 * 979 * @global WP_Screen $current_screen WordPress current screen object. 980 * 981 * @return bool True if inside WordPress administration interface, false otherwise. 982 */ 983 function is_admin() { 984 if ( isset( $GLOBALS['current_screen'] ) ) { 985 return $GLOBALS['current_screen']->in_admin(); 986 } elseif ( defined( 'WP_ADMIN' ) ) { 987 return WP_ADMIN; 988 } 989 990 return false; 991 } 992 993 /** 994 * Whether the current request is for a site's administrative interface. 995 * 996 * e.g. `/wp-admin/` 997 * 998 * Does not check if the user is an administrator; use current_user_can() 999 * for checking roles and capabilities. 1000 * 1001 * @since 3.1.0 1002 * 1003 * @global WP_Screen $current_screen WordPress current screen object. 1004 * 1005 * @return bool True if inside WordPress blog administration pages. 1006 */ 1007 function is_blog_admin() { 1008 if ( isset( $GLOBALS['current_screen'] ) ) { 1009 return $GLOBALS['current_screen']->in_admin( 'site' ); 1010 } elseif ( defined( 'WP_BLOG_ADMIN' ) ) { 1011 return WP_BLOG_ADMIN; 1012 } 1013 1014 return false; 1015 } 1016 1017 /** 1018 * Whether the current request is for the network administrative interface. 1019 * 1020 * e.g. `/wp-admin/network/` 1021 * 1022 * Does not check if the user is an administrator; use current_user_can() 1023 * for checking roles and capabilities. 1024 * 1025 * Does not check if the site is a Multisite network; use is_multisite() 1026 * for checking if Multisite is enabled. 1027 * 1028 * @since 3.1.0 1029 * 1030 * @global WP_Screen $current_screen WordPress current screen object. 1031 * 1032 * @return bool True if inside WordPress network administration pages. 1033 */ 1034 function is_network_admin() { 1035 if ( isset( $GLOBALS['current_screen'] ) ) { 1036 return $GLOBALS['current_screen']->in_admin( 'network' ); 1037 } elseif ( defined( 'WP_NETWORK_ADMIN' ) ) { 1038 return WP_NETWORK_ADMIN; 1039 } 1040 1041 return false; 1042 } 1043 1044 /** 1045 * Whether the current request is for a user admin screen. 1046 * 1047 * e.g. `/wp-admin/user/` 1048 * 1049 * Does not check if the user is an administrator; use current_user_can() 1050 * for checking roles and capabilities. 1051 * 1052 * @since 3.1.0 1053 * 1054 * @global WP_Screen $current_screen WordPress current screen object. 1055 * 1056 * @return bool True if inside WordPress user administration pages. 1057 */ 1058 function is_user_admin() { 1059 if ( isset( $GLOBALS['current_screen'] ) ) { 1060 return $GLOBALS['current_screen']->in_admin( 'user' ); 1061 } elseif ( defined( 'WP_USER_ADMIN' ) ) { 1062 return WP_USER_ADMIN; 1063 } 1064 1065 return false; 1066 } 1067 1068 /** 1069 * If Multisite is enabled. 1070 * 1071 * @since 3.0.0 1072 * 1073 * @return bool True if Multisite is enabled, false otherwise. 1074 */ 1075 function is_multisite() { 1076 if ( defined( 'MULTISITE' ) ) { 1077 return MULTISITE; 1078 } 1079 1080 if ( defined( 'SUBDOMAIN_INSTALL' ) || defined( 'VHOST' ) || defined( 'SUNRISE' ) ) { 1081 return true; 1082 } 1083 1084 return false; 1085 } 1086 1087 /** 1088 * Retrieve the current site ID. 1089 * 1090 * @since 3.1.0 1091 * 1092 * @global int $blog_id 1093 * 1094 * @return int Site ID. 1095 */ 1096 function get_current_blog_id() { 1097 global $blog_id; 1098 return absint( $blog_id ); 1099 } 1100 1101 /** 1102 * Retrieves the current network ID. 1103 * 1104 * @since 4.6.0 1105 * 1106 * @return int The ID of the current network. 1107 */ 1108 function get_current_network_id() { 1109 if ( ! is_multisite() ) { 1110 return 1; 1111 } 1112 1113 $current_network = get_network(); 1114 1115 if ( ! isset( $current_network->id ) ) { 1116 return get_main_network_id(); 1117 } 1118 1119 return absint( $current_network->id ); 1120 } 1121 1122 /** 1123 * Attempt an early load of translations. 1124 * 1125 * Used for errors encountered during the initial loading process, before 1126 * the locale has been properly detected and loaded. 1127 * 1128 * Designed for unusual load sequences (like setup-config.php) or for when 1129 * the script will then terminate with an error, otherwise there is a risk 1130 * that a file can be double-included. 1131 * 1132 * @since 3.4.0 1133 * @access private 1134 * 1135 * @global WP_Locale $wp_locale WordPress date and time locale object. 1136 * 1137 * @staticvar bool $loaded 1138 */ 1139 function wp_load_translations_early() { 1140 global $wp_locale; 1141 1142 static $loaded = false; 1143 if ( $loaded ) { 1144 return; 1145 } 1146 $loaded = true; 1147 1148 if ( function_exists( 'did_action' ) && did_action( 'init' ) ) { 1149 return; 1150 } 1151 1152 // We need $wp_local_package 1153 require ABSPATH . WPINC . '/version.php'; 1154 1155 // Translation and localization 1156 require_once ABSPATH . WPINC . '/pomo/mo.php'; 1157 require_once ABSPATH . WPINC . '/l10n.php'; 1158 require_once ABSPATH . WPINC . '/class-wp-locale.php'; 1159 require_once ABSPATH . WPINC . '/class-wp-locale-switcher.php'; 1160 1161 // General libraries 1162 require_once ABSPATH . WPINC . '/plugin.php'; 1163 1164 $locales = array(); 1165 $locations = array(); 1166 1167 while ( true ) { 1168 if ( defined( 'WPLANG' ) ) { 1169 if ( '' == WPLANG ) { 1170 break; 1171 } 1172 $locales[] = WPLANG; 1173 } 1174 1175 if ( isset( $wp_local_package ) ) { 1176 $locales[] = $wp_local_package; 1177 } 1178 1179 if ( ! $locales ) { 1180 break; 1181 } 1182 1183 if ( defined( 'WP_LANG_DIR' ) && @is_dir( WP_LANG_DIR ) ) { 1184 $locations[] = WP_LANG_DIR; 1185 } 1186 1187 if ( defined( 'WP_CONTENT_DIR' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) ) { 1188 $locations[] = WP_CONTENT_DIR . '/languages'; 1189 } 1190 1191 if ( @is_dir( ABSPATH . 'wp-content/languages' ) ) { 1192 $locations[] = ABSPATH . 'wp-content/languages'; 1193 } 1194 1195 if ( @is_dir( ABSPATH . WPINC . '/languages' ) ) { 1196 $locations[] = ABSPATH . WPINC . '/languages'; 1197 } 1198 1199 if ( ! $locations ) { 1200 break; 1201 } 1202 1203 $locations = array_unique( $locations ); 1204 1205 foreach ( $locales as $locale ) { 1206 foreach ( $locations as $location ) { 1207 if ( file_exists( $location . '/' . $locale . '.mo' ) ) { 1208 load_textdomain( 'default', $location . '/' . $locale . '.mo' ); 1209 if ( defined( 'WP_SETUP_CONFIG' ) && file_exists( $location . '/admin-' . $locale . '.mo' ) ) { 1210 load_textdomain( 'default', $location . '/admin-' . $locale . '.mo' ); 1211 } 1212 break 2; 1213 } 1214 } 1215 } 1216 1217 break; 1218 } 1219 1220 $wp_locale = new WP_Locale(); 1221 } 1222 1223 /** 1224 * Check or set whether WordPress is in "installation" mode. 1225 * 1226 * If the `WP_INSTALLING` constant is defined during the bootstrap, `wp_installing()` will default to `true`. 1227 * 1228 * @since 4.4.0 1229 * 1230 * @staticvar bool $installing 1231 * 1232 * @param bool $is_installing Optional. True to set WP into Installing mode, false to turn Installing mode off. 1233 * Omit this parameter if you only want to fetch the current status. 1234 * @return bool True if WP is installing, otherwise false. When a `$is_installing` is passed, the function will 1235 * report whether WP was in installing mode prior to the change to `$is_installing`. 1236 */ 1237 function wp_installing( $is_installing = null ) { 1238 static $installing = null; 1239 1240 // Support for the `WP_INSTALLING` constant, defined before WP is loaded. 1241 if ( is_null( $installing ) ) { 1242 $installing = defined( 'WP_INSTALLING' ) && WP_INSTALLING; 1243 } 1244 1245 if ( ! is_null( $is_installing ) ) { 1246 $old_installing = $installing; 1247 $installing = $is_installing; 1248 return (bool) $old_installing; 1249 } 1250 1251 return (bool) $installing; 1252 } 1253 1254 /** 1255 * Determines if SSL is used. 1256 * 1257 * @since 2.6.0 1258 * @since 4.6.0 Moved from functions.php to load.php. 1259 * 1260 * @return bool True if SSL, otherwise false. 1261 */ 1262 function is_ssl() { 1263 if ( isset( $_SERVER['HTTPS'] ) ) { 1264 if ( 'on' == strtolower( $_SERVER['HTTPS'] ) ) { 1265 return true; 1266 } 1267 1268 if ( '1' == $_SERVER['HTTPS'] ) { 1269 return true; 1270 } 1271 } elseif ( isset( $_SERVER['SERVER_PORT'] ) && ( '443' == $_SERVER['SERVER_PORT'] ) ) { 1272 return true; 1273 } 1274 return false; 1275 } 1276 1277 /** 1278 * Converts a shorthand byte value to an integer byte value. 1279 * 1280 * @since 2.3.0 1281 * @since 4.6.0 Moved from media.php to load.php. 1282 * 1283 * @link https://secure.php.net/manual/en/function.ini-get.php 1284 * @link https://secure.php.net/manual/en/faq.using.php#faq.using.shorthandbytes 1285 * 1286 * @param string $value A (PHP ini) byte value, either shorthand or ordinary. 1287 * @return int An integer byte value. 1288 */ 1289 function wp_convert_hr_to_bytes( $value ) { 1290 $value = strtolower( trim( $value ) ); 1291 $bytes = (int) $value; 1292 1293 if ( false !== strpos( $value, 'g' ) ) { 1294 $bytes *= GB_IN_BYTES; 1295 } elseif ( false !== strpos( $value, 'm' ) ) { 1296 $bytes *= MB_IN_BYTES; 1297 } elseif ( false !== strpos( $value, 'k' ) ) { 1298 $bytes *= KB_IN_BYTES; 1299 } 1300 1301 // Deal with large (float) values which run into the maximum integer size. 1302 return min( $bytes, PHP_INT_MAX ); 1303 } 1304 1305 /** 1306 * Determines whether a PHP ini value is changeable at runtime. 1307 * 1308 * @since 4.6.0 1309 * 1310 * @staticvar array $ini_all 1311 * 1312 * @link https://secure.php.net/manual/en/function.ini-get-all.php 1313 * 1314 * @param string $setting The name of the ini setting to check. 1315 * @return bool True if the value is changeable at runtime. False otherwise. 1316 */ 1317 function wp_is_ini_value_changeable( $setting ) { 1318 static $ini_all; 1319 1320 if ( ! isset( $ini_all ) ) { 1321 $ini_all = false; 1322 // Sometimes `ini_get_all()` is disabled via the `disable_functions` option for "security purposes". 1323 if ( function_exists( 'ini_get_all' ) ) { 1324 $ini_all = ini_get_all(); 1325 } 1326 } 1327 1328 // 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. 1329 if ( isset( $ini_all[ $setting ]['access'] ) && ( INI_ALL === ( $ini_all[ $setting ]['access'] & 7 ) || INI_USER === ( $ini_all[ $setting ]['access'] & 7 ) ) ) { 1330 return true; 1331 } 1332 1333 // If we were unable to retrieve the details, fail gracefully to assume it's changeable. 1334 if ( ! is_array( $ini_all ) ) { 1335 return true; 1336 } 1337 1338 return false; 1339 } 1340 1341 /** 1342 * Determines whether the current request is a WordPress Ajax request. 1343 * 1344 * @since 4.7.0 1345 * 1346 * @return bool True if it's a WordPress Ajax request, false otherwise. 1347 */ 1348 function wp_doing_ajax() { 1349 /** 1350 * Filters whether the current request is a WordPress Ajax request. 1351 * 1352 * @since 4.7.0 1353 * 1354 * @param bool $wp_doing_ajax Whether the current request is a WordPress Ajax request. 1355 */ 1356 return apply_filters( 'wp_doing_ajax', defined( 'DOING_AJAX' ) && DOING_AJAX ); 1357 } 1358 1359 /** 1360 * Determines whether the current request should use themes. 1361 * 1362 * @since 5.1.0 1363 * 1364 * @return bool True if themes should be used, false otherwise. 1365 */ 1366 function wp_using_themes() { 1367 /** 1368 * Filters whether the current request should use themes. 1369 * 1370 * @since 5.1.0 1371 * 1372 * @param bool $wp_using_themes Whether the current request should use themes. 1373 */ 1374 return apply_filters( 'wp_using_themes', defined( 'WP_USE_THEMES' ) && WP_USE_THEMES ); 1375 } 1376 1377 /** 1378 * Determines whether the current request is a WordPress cron request. 1379 * 1380 * @since 4.8.0 1381 * 1382 * @return bool True if it's a WordPress cron request, false otherwise. 1383 */ 1384 function wp_doing_cron() { 1385 /** 1386 * Filters whether the current request is a WordPress cron request. 1387 * 1388 * @since 4.8.0 1389 * 1390 * @param bool $wp_doing_cron Whether the current request is a WordPress cron request. 1391 */ 1392 return apply_filters( 'wp_doing_cron', defined( 'DOING_CRON' ) && DOING_CRON ); 1393 } 1394 1395 /** 1396 * Check whether variable is a WordPress Error. 1397 * 1398 * Returns true if $thing is an object of the WP_Error class. 1399 * 1400 * @since 2.1.0 1401 * 1402 * @param mixed $thing Check if unknown variable is a WP_Error object. 1403 * @return bool True, if WP_Error. False, if not WP_Error. 1404 */ 1405 function is_wp_error( $thing ) { 1406 return ( $thing instanceof WP_Error ); 1407 } 1408 1409 /** 1410 * Determines whether file modifications are allowed. 1411 * 1412 * @since 4.8.0 1413 * 1414 * @param string $context The usage context. 1415 * @return bool True if file modification is allowed, false otherwise. 1416 */ 1417 function wp_is_file_mod_allowed( $context ) { 1418 /** 1419 * Filters whether file modifications are allowed. 1420 * 1421 * @since 4.8.0 1422 * 1423 * @param bool $file_mod_allowed Whether file modifications are allowed. 1424 * @param string $context The usage context. 1425 */ 1426 return apply_filters( 'file_mod_allowed', ! defined( 'DISALLOW_FILE_MODS' ) || ! DISALLOW_FILE_MODS, $context ); 1427 } 1428 1429 /** 1430 * Start scraping edited file errors. 1431 * 1432 * @since 4.9.0 1433 */ 1434 function wp_start_scraping_edited_file_errors() { 1435 if ( ! isset( $_REQUEST['wp_scrape_key'] ) || ! isset( $_REQUEST['wp_scrape_nonce'] ) ) { 1436 return; 1437 } 1438 $key = substr( sanitize_key( wp_unslash( $_REQUEST['wp_scrape_key'] ) ), 0, 32 ); 1439 $nonce = wp_unslash( $_REQUEST['wp_scrape_nonce'] ); 1440 1441 if ( get_transient( 'scrape_key_' . $key ) !== $nonce ) { 1442 echo "###### wp_scraping_result_start:$key ######"; 1443 echo wp_json_encode( 1444 array( 1445 'code' => 'scrape_nonce_failure', 1446 'message' => __( 'Scrape nonce check failed. Please try again.' ), 1447 ) 1448 ); 1449 echo "###### wp_scraping_result_end:$key ######"; 1450 die(); 1451 } 1452 if ( ! defined( 'WP_SANDBOX_SCRAPING' ) ) { 1453 define( 'WP_SANDBOX_SCRAPING', true ); 1454 } 1455 register_shutdown_function( 'wp_finalize_scraping_edited_file_errors', $key ); 1456 } 1457 1458 /** 1459 * Finalize scraping for edited file errors. 1460 * 1461 * @since 4.9.0 1462 * 1463 * @param string $scrape_key Scrape key. 1464 */ 1465 function wp_finalize_scraping_edited_file_errors( $scrape_key ) { 1466 $error = error_get_last(); 1467 echo "\n###### wp_scraping_result_start:$scrape_key ######\n"; 1468 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 ) ) { 1469 $error = str_replace( ABSPATH, '', $error ); 1470 echo wp_json_encode( $error ); 1471 } else { 1472 echo wp_json_encode( true ); 1473 } 1474 echo "\n###### wp_scraping_result_end:$scrape_key ######\n"; 1475 } 1476 1477 /** 1478 * Checks whether current request is a JSON request, or is expecting a JSON response. 1479 * 1480 * @since 5.0.0 1481 * 1482 * @return bool True if `Accepts` or `Content-Type` headers contain `application/json`. 1483 * False otherwise. 1484 */ 1485 function wp_is_json_request() { 1486 1487 if ( isset( $_SERVER['HTTP_ACCEPT'] ) && false !== strpos( $_SERVER['HTTP_ACCEPT'], 'application/json' ) ) { 1488 return true; 1489 } 1490 1491 if ( isset( $_SERVER['CONTENT_TYPE'] ) && 'application/json' === $_SERVER['CONTENT_TYPE'] ) { 1492 return true; 1493 } 1494 1495 return false; 1496 1497 } 1498 1499 /** 1500 * Checks whether current request is a JSONP request, or is expecting a JSONP response. 1501 * 1502 * @since 5.2.0 1503 * 1504 * @return bool True if JSONP request, false otherwise. 1505 */ 1506 function wp_is_jsonp_request() { 1507 if ( ! isset( $_GET['_jsonp'] ) ) { 1508 return false; 1509 } 1510 1511 if ( ! function_exists( 'wp_check_jsonp_callback' ) ) { 1512 require_once ABSPATH . WPINC . '/functions.php'; 1513 } 1514 1515 $jsonp_callback = $_GET['_jsonp']; 1516 if ( ! wp_check_jsonp_callback( $jsonp_callback ) ) { 1517 return false; 1518 } 1519 1520 /** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */ 1521 $jsonp_enabled = apply_filters( 'rest_jsonp_enabled', true ); 1522 1523 return $jsonp_enabled; 1524 1525 } 1526 1527 /** 1528 * Checks whether current request is an XML request, or is expecting an XML response. 1529 * 1530 * @since 5.2.0 1531 * 1532 * @return bool True if `Accepts` or `Content-Type` headers contain `text/xml` 1533 * or one of the related MIME types. False otherwise. 1534 */ 1535 function wp_is_xml_request() { 1536 $accepted = array( 1537 'text/xml', 1538 'application/rss+xml', 1539 'application/atom+xml', 1540 'application/rdf+xml', 1541 'text/xml+oembed', 1542 'application/xml+oembed', 1543 ); 1544 1545 if ( isset( $_SERVER['HTTP_ACCEPT'] ) ) { 1546 foreach ( $accepted as $type ) { 1547 if ( false !== strpos( $_SERVER['HTTP_ACCEPT'], $type ) ) { 1548 return true; 1549 } 1550 } 1551 } 1552 1553 if ( isset( $_SERVER['CONTENT_TYPE'] ) && in_array( $_SERVER['CONTENT_TYPE'], $accepted, true ) ) { 1554 return true; 1555 } 1556 1557 return false; 1558 }
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| Generated: Sat Jan 18 01:00:03 2020 | Cross-referenced by PHPXref 0.7.1 |