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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 wp_load_translations_early(); 135 136 $protocol = wp_get_server_protocol(); 137 header( sprintf( '%s 500 Internal Server Error', $protocol ), true, 500 ); 138 header( 'Content-Type: text/html; charset=utf-8' ); 139 /* translators: 1: Current PHP version number, 2: WordPress version number, 3: Minimum required PHP version number. */ 140 printf( __( 'Your server is running PHP version %1$s but WordPress %2$s requires at least %3$s.' ), $php_version, $wp_version, $required_php_version ); 141 exit( 1 ); 142 } 143 144 if ( ! extension_loaded( 'mysql' ) && ! extension_loaded( 'mysqli' ) && ! extension_loaded( 'mysqlnd' ) && ! file_exists( WP_CONTENT_DIR . '/db.php' ) ) { 145 require_once ( ABSPATH . WPINC . '/functions.php' ); 146 wp_load_translations_early(); 147 $args = array( 148 'exit' => false, 149 'code' => 'mysql_not_found', 150 ); 151 wp_die( 152 __( 'Your PHP installation appears to be missing the MySQL extension which is required by WordPress.' ), 153 __( 'Requirements Not Met' ), 154 $args 155 ); 156 exit( 1 ); 157 } 158 } 159 160 /** 161 * Don't load all of WordPress when handling a favicon.ico request. 162 * 163 * Instead, send the headers for a zero-length favicon and bail. 164 * 165 * @since 3.0.0 166 */ 167 function wp_favicon_request() { 168 if ( '/favicon.ico' == $_SERVER['REQUEST_URI'] ) { 169 header( 'Content-Type: image/vnd.microsoft.icon' ); 170 exit; 171 } 172 } 173 174 /** 175 * Die with a maintenance message when conditions are met. 176 * 177 * Checks for a file in the WordPress root directory named ".maintenance". 178 * This file will contain the variable $upgrading, set to the time the file 179 * was created. If the file was created less than 10 minutes ago, WordPress 180 * enters maintenance mode and displays a message. 181 * 182 * The default message can be replaced by using a drop-in (maintenance.php in 183 * the wp-content directory). 184 * 185 * @since 3.0.0 186 * @access private 187 * 188 * @global int $upgrading the unix timestamp marking when upgrading WordPress began. 189 */ 190 function wp_maintenance() { 191 if ( ! file_exists( ABSPATH . '.maintenance' ) || wp_installing() ) { 192 return; 193 } 194 195 global $upgrading; 196 197 include( ABSPATH . '.maintenance' ); 198 // If the $upgrading timestamp is older than 10 minutes, don't die. 199 if ( ( time() - $upgrading ) >= 600 ) { 200 return; 201 } 202 203 /** 204 * Filters whether to enable maintenance mode. 205 * 206 * This filter runs before it can be used by plugins. It is designed for 207 * non-web runtimes. If this filter returns true, maintenance mode will be 208 * active and the request will end. If false, the request will be allowed to 209 * continue processing even if maintenance mode should be active. 210 * 211 * @since 4.6.0 212 * 213 * @param bool $enable_checks Whether to enable maintenance mode. Default true. 214 * @param int $upgrading The timestamp set in the .maintenance file. 215 */ 216 if ( ! apply_filters( 'enable_maintenance_mode', true, $upgrading ) ) { 217 return; 218 } 219 220 if ( file_exists( WP_CONTENT_DIR . '/maintenance.php' ) ) { 221 require_once( WP_CONTENT_DIR . '/maintenance.php' ); 222 die(); 223 } 224 225 require_once ( ABSPATH . WPINC . '/functions.php' ); 226 wp_load_translations_early(); 227 228 header( 'Retry-After: 600' ); 229 230 wp_die( 231 __( 'Briefly unavailable for scheduled maintenance. Check back in a minute.' ), 232 __( 'Maintenance' ), 233 503 234 ); 235 } 236 237 /** 238 * Start the WordPress micro-timer. 239 * 240 * @since 0.71 241 * @access private 242 * 243 * @global float $timestart Unix timestamp set at the beginning of the page load. 244 * @see timer_stop() 245 * 246 * @return bool Always returns true. 247 */ 248 function timer_start() { 249 global $timestart; 250 $timestart = microtime( true ); 251 return true; 252 } 253 254 /** 255 * Retrieve or display the time from the page start to when function is called. 256 * 257 * @since 0.71 258 * 259 * @global float $timestart Seconds from when timer_start() is called. 260 * @global float $timeend Seconds from when function is called. 261 * 262 * @param int|bool $display Whether to echo or return the results. Accepts 0|false for return, 263 * 1|true for echo. Default 0|false. 264 * @param int $precision The number of digits from the right of the decimal to display. 265 * Default 3. 266 * @return string The "second.microsecond" finished time calculation. The number is formatted 267 * for human consumption, both localized and rounded. 268 */ 269 function timer_stop( $display = 0, $precision = 3 ) { 270 global $timestart, $timeend; 271 $timeend = microtime( true ); 272 $timetotal = $timeend - $timestart; 273 $r = ( function_exists( 'number_format_i18n' ) ) ? number_format_i18n( $timetotal, $precision ) : number_format( $timetotal, $precision ); 274 if ( $display ) { 275 echo $r; 276 } 277 return $r; 278 } 279 280 /** 281 * Set PHP error reporting based on WordPress debug settings. 282 * 283 * Uses three constants: `WP_DEBUG`, `WP_DEBUG_DISPLAY`, and `WP_DEBUG_LOG`. 284 * All three can be defined in wp-config.php. By default, `WP_DEBUG` and 285 * `WP_DEBUG_LOG` are set to false, and `WP_DEBUG_DISPLAY` is set to true. 286 * 287 * When `WP_DEBUG` is true, all PHP notices are reported. WordPress will also 288 * display internal notices: when a deprecated WordPress function, function 289 * argument, or file is used. Deprecated code may be removed from a later 290 * version. 291 * 292 * It is strongly recommended that plugin and theme developers use `WP_DEBUG` 293 * in their development environments. 294 * 295 * `WP_DEBUG_DISPLAY` and `WP_DEBUG_LOG` perform no function unless `WP_DEBUG` 296 * is true. 297 * 298 * When `WP_DEBUG_DISPLAY` is true, WordPress will force errors to be displayed. 299 * `WP_DEBUG_DISPLAY` defaults to true. Defining it as null prevents WordPress 300 * from changing the global configuration setting. Defining `WP_DEBUG_DISPLAY` 301 * as false will force errors to be hidden. 302 * 303 * When `WP_DEBUG_LOG` is true, errors will be logged to `wp-content/debug.log`. 304 * When `WP_DEBUG_LOG` is a valid path, errors will be logged to the specified file. 305 * 306 * Errors are never displayed for XML-RPC, REST, and Ajax requests. 307 * 308 * @since 3.0.0 309 * @since 5.1.0 `WP_DEBUG_LOG` can be a file path. 310 * @access private 311 */ 312 function wp_debug_mode() { 313 /** 314 * Filters whether to allow the debug mode check to occur. 315 * 316 * This filter runs before it can be used by plugins. It is designed for 317 * non-web run-times. Returning false causes the `WP_DEBUG` and related 318 * constants to not be checked and the default php values for errors 319 * will be used unless you take care to update them yourself. 320 * 321 * @since 4.6.0 322 * 323 * @param bool $enable_debug_mode Whether to enable debug mode checks to occur. Default true. 324 */ 325 if ( ! apply_filters( 'enable_wp_debug_mode_checks', true ) ) { 326 return; 327 } 328 329 if ( WP_DEBUG ) { 330 error_reporting( E_ALL ); 331 332 if ( WP_DEBUG_DISPLAY ) { 333 ini_set( 'display_errors', 1 ); 334 } elseif ( null !== WP_DEBUG_DISPLAY ) { 335 ini_set( 'display_errors', 0 ); 336 } 337 338 if ( in_array( strtolower( (string) WP_DEBUG_LOG ), array( 'true', '1' ), true ) ) { 339 $log_path = WP_CONTENT_DIR . '/debug.log'; 340 } elseif ( is_string( WP_DEBUG_LOG ) ) { 341 $log_path = WP_DEBUG_LOG; 342 } else { 343 $log_path = false; 344 } 345 346 if ( $log_path ) { 347 ini_set( 'log_errors', 1 ); 348 ini_set( 'error_log', $log_path ); 349 } 350 } else { 351 error_reporting( E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_ERROR | E_WARNING | E_PARSE | E_USER_ERROR | E_USER_WARNING | E_RECOVERABLE_ERROR ); 352 } 353 354 if ( defined( 'XMLRPC_REQUEST' ) || defined( 'REST_REQUEST' ) || ( defined( 'WP_INSTALLING' ) && WP_INSTALLING ) || wp_doing_ajax() || wp_is_json_request() ) { 355 ini_set( 'display_errors', 0 ); 356 } 357 } 358 359 /** 360 * Set the location of the language directory. 361 * 362 * To set directory manually, define the `WP_LANG_DIR` constant 363 * in wp-config.php. 364 * 365 * If the language directory exists within `WP_CONTENT_DIR`, it 366 * is used. Otherwise the language directory is assumed to live 367 * in `WPINC`. 368 * 369 * @since 3.0.0 370 * @access private 371 */ 372 function wp_set_lang_dir() { 373 if ( ! defined( 'WP_LANG_DIR' ) ) { 374 if ( file_exists( WP_CONTENT_DIR . '/languages' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) || ! @is_dir( ABSPATH . WPINC . '/languages' ) ) { 375 /** 376 * Server path of the language directory. 377 * 378 * No leading slash, no trailing slash, full path, not relative to ABSPATH 379 * 380 * @since 2.1.0 381 */ 382 define( 'WP_LANG_DIR', WP_CONTENT_DIR . '/languages' ); 383 if ( ! defined( 'LANGDIR' ) ) { 384 // Old static relative path maintained for limited backward compatibility - won't work in some cases. 385 define( 'LANGDIR', 'wp-content/languages' ); 386 } 387 } else { 388 /** 389 * Server path of the language directory. 390 * 391 * No leading slash, no trailing slash, full path, not relative to `ABSPATH`. 392 * 393 * @since 2.1.0 394 */ 395 define( 'WP_LANG_DIR', ABSPATH . WPINC . '/languages' ); 396 if ( ! defined( 'LANGDIR' ) ) { 397 // Old relative path maintained for backward compatibility. 398 define( 'LANGDIR', WPINC . '/languages' ); 399 } 400 } 401 } 402 } 403 404 /** 405 * Load the database class file and instantiate the `$wpdb` global. 406 * 407 * @since 2.5.0 408 * 409 * @global wpdb $wpdb WordPress database abstraction object. 410 */ 411 function require_wp_db() { 412 global $wpdb; 413 414 require_once ( ABSPATH . WPINC . '/wp-db.php' ); 415 if ( file_exists( WP_CONTENT_DIR . '/db.php' ) ) { 416 require_once( WP_CONTENT_DIR . '/db.php' ); 417 } 418 419 if ( isset( $wpdb ) ) { 420 return; 421 } 422 423 $dbuser = defined( 'DB_USER' ) ? DB_USER : ''; 424 $dbpassword = defined( 'DB_PASSWORD' ) ? DB_PASSWORD : ''; 425 $dbname = defined( 'DB_NAME' ) ? DB_NAME : ''; 426 $dbhost = defined( 'DB_HOST' ) ? DB_HOST : ''; 427 428 $wpdb = new wpdb( $dbuser, $dbpassword, $dbname, $dbhost ); 429 } 430 431 /** 432 * Set the database table prefix and the format specifiers for database 433 * table columns. 434 * 435 * Columns not listed here default to `%s`. 436 * 437 * @since 3.0.0 438 * @access private 439 * 440 * @global wpdb $wpdb WordPress database abstraction object. 441 * @global string $table_prefix The database table prefix. 442 */ 443 function wp_set_wpdb_vars() { 444 global $wpdb, $table_prefix; 445 if ( ! empty( $wpdb->error ) ) { 446 dead_db(); 447 } 448 449 $wpdb->field_types = array( 450 'post_author' => '%d', 451 'post_parent' => '%d', 452 'menu_order' => '%d', 453 'term_id' => '%d', 454 'term_group' => '%d', 455 'term_taxonomy_id' => '%d', 456 'parent' => '%d', 457 'count' => '%d', 458 'object_id' => '%d', 459 'term_order' => '%d', 460 'ID' => '%d', 461 'comment_ID' => '%d', 462 'comment_post_ID' => '%d', 463 'comment_parent' => '%d', 464 'user_id' => '%d', 465 'link_id' => '%d', 466 'link_owner' => '%d', 467 'link_rating' => '%d', 468 'option_id' => '%d', 469 'blog_id' => '%d', 470 'meta_id' => '%d', 471 'post_id' => '%d', 472 'user_status' => '%d', 473 'umeta_id' => '%d', 474 'comment_karma' => '%d', 475 'comment_count' => '%d', 476 // multisite: 477 'active' => '%d', 478 'cat_id' => '%d', 479 'deleted' => '%d', 480 'lang_id' => '%d', 481 'mature' => '%d', 482 'public' => '%d', 483 'site_id' => '%d', 484 'spam' => '%d', 485 ); 486 487 $prefix = $wpdb->set_prefix( $table_prefix ); 488 489 if ( is_wp_error( $prefix ) ) { 490 wp_load_translations_early(); 491 wp_die( 492 sprintf( 493 /* translators: 1: $table_prefix, 2: wp-config.php */ 494 __( '<strong>ERROR</strong>: %1$s in %2$s can only contain numbers, letters, and underscores.' ), 495 '<code>$table_prefix</code>', 496 '<code>wp-config.php</code>' 497 ) 498 ); 499 } 500 } 501 502 /** 503 * Toggle `$_wp_using_ext_object_cache` on and off without directly 504 * touching global. 505 * 506 * @since 3.7.0 507 * 508 * @global bool $_wp_using_ext_object_cache 509 * 510 * @param bool $using Whether external object cache is being used. 511 * @return bool The current 'using' setting. 512 */ 513 function wp_using_ext_object_cache( $using = null ) { 514 global $_wp_using_ext_object_cache; 515 $current_using = $_wp_using_ext_object_cache; 516 if ( null !== $using ) { 517 $_wp_using_ext_object_cache = $using; 518 } 519 return $current_using; 520 } 521 522 /** 523 * Start the WordPress object cache. 524 * 525 * If an object-cache.php file exists in the wp-content directory, 526 * it uses that drop-in as an external object cache. 527 * 528 * @since 3.0.0 529 * @access private 530 * 531 * @global array $wp_filter Stores all of the filters. 532 */ 533 function wp_start_object_cache() { 534 global $wp_filter; 535 static $first_init = true; 536 537 // Only perform the following checks once. 538 if ( $first_init ) { 539 if ( ! function_exists( 'wp_cache_init' ) ) { 540 /* 541 * This is the normal situation. First-run of this function. No 542 * caching backend has been loaded. 543 * 544 * We try to load a custom caching backend, and then, if it 545 * results in a wp_cache_init() function existing, we note 546 * that an external object cache is being used. 547 */ 548 if ( file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) { 549 require_once( WP_CONTENT_DIR . '/object-cache.php' ); 550 if ( function_exists( 'wp_cache_init' ) ) { 551 wp_using_ext_object_cache( true ); 552 } 553 554 // Re-initialize any hooks added manually by object-cache.php 555 if ( $wp_filter ) { 556 $wp_filter = WP_Hook::build_preinitialized_hooks( $wp_filter ); 557 } 558 } 559 } elseif ( ! wp_using_ext_object_cache() && file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) { 560 /* 561 * Sometimes advanced-cache.php can load object-cache.php before 562 * this function is run. This breaks the function_exists() check 563 * above and can result in wp_using_ext_object_cache() returning 564 * false when actually an external cache is in use. 565 */ 566 wp_using_ext_object_cache( true ); 567 } 568 } 569 570 if ( ! wp_using_ext_object_cache() ) { 571 require_once ( ABSPATH . WPINC . '/cache.php' ); 572 } 573 574 /* 575 * If cache supports reset, reset instead of init if already 576 * initialized. Reset signals to the cache that global IDs 577 * have changed and it may need to update keys and cleanup caches. 578 */ 579 if ( ! $first_init && function_exists( 'wp_cache_switch_to_blog' ) ) { 580 wp_cache_switch_to_blog( get_current_blog_id() ); 581 } elseif ( function_exists( 'wp_cache_init' ) ) { 582 wp_cache_init(); 583 } 584 585 if ( function_exists( 'wp_cache_add_global_groups' ) ) { 586 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' ) ); 587 wp_cache_add_non_persistent_groups( array( 'counts', 'plugins' ) ); 588 } 589 590 $first_init = false; 591 } 592 593 /** 594 * Redirect to the installer if WordPress is not installed. 595 * 596 * Dies with an error message when Multisite is enabled. 597 * 598 * @since 3.0.0 599 * @access private 600 */ 601 function wp_not_installed() { 602 if ( is_multisite() ) { 603 if ( ! is_blog_installed() && ! wp_installing() ) { 604 nocache_headers(); 605 606 wp_die( __( 'The site you have requested is not installed properly. Please contact the system administrator.' ) ); 607 } 608 } elseif ( ! is_blog_installed() && ! wp_installing() ) { 609 nocache_headers(); 610 611 require ( ABSPATH . WPINC . '/kses.php' ); 612 require ( ABSPATH . WPINC . '/pluggable.php' ); 613 614 $link = wp_guess_url() . '/wp-admin/install.php'; 615 616 wp_redirect( $link ); 617 die(); 618 } 619 } 620 621 /** 622 * Retrieve an array of must-use plugin files. 623 * 624 * The default directory is wp-content/mu-plugins. To change the default 625 * directory manually, define `WPMU_PLUGIN_DIR` and `WPMU_PLUGIN_URL` 626 * in wp-config.php. 627 * 628 * @since 3.0.0 629 * @access private 630 * 631 * @return array Files to include. 632 */ 633 function wp_get_mu_plugins() { 634 $mu_plugins = array(); 635 if ( ! is_dir( WPMU_PLUGIN_DIR ) ) { 636 return $mu_plugins; 637 } 638 $dh = opendir( WPMU_PLUGIN_DIR ); 639 if ( ! $dh ) { 640 return $mu_plugins; 641 } 642 while ( ( $plugin = readdir( $dh ) ) !== false ) { 643 if ( substr( $plugin, -4 ) == '.php' ) { 644 $mu_plugins[] = WPMU_PLUGIN_DIR . '/' . $plugin; 645 } 646 } 647 closedir( $dh ); 648 sort( $mu_plugins ); 649 650 return $mu_plugins; 651 } 652 653 /** 654 * Retrieve an array of active and valid plugin files. 655 * 656 * While upgrading or installing WordPress, no plugins are returned. 657 * 658 * The default directory is `wp-content/plugins`. To change the default 659 * directory manually, define `WP_PLUGIN_DIR` and `WP_PLUGIN_URL` 660 * in `wp-config.php`. 661 * 662 * @since 3.0.0 663 * @access private 664 * 665 * @return string[] $plugin_file Array of paths to plugin files relative to the plugins directory. 666 */ 667 function wp_get_active_and_valid_plugins() { 668 $plugins = array(); 669 $active_plugins = (array) get_option( 'active_plugins', array() ); 670 671 // Check for hacks file if the option is enabled 672 if ( get_option( 'hack_file' ) && file_exists( ABSPATH . 'my-hacks.php' ) ) { 673 _deprecated_file( 'my-hacks.php', '1.5.0' ); 674 array_unshift( $plugins, ABSPATH . 'my-hacks.php' ); 675 } 676 677 if ( empty( $active_plugins ) || wp_installing() ) { 678 return $plugins; 679 } 680 681 $network_plugins = is_multisite() ? wp_get_active_network_plugins() : false; 682 683 foreach ( $active_plugins as $plugin ) { 684 if ( ! validate_file( $plugin ) // $plugin must validate as file 685 && '.php' == substr( $plugin, -4 ) // $plugin must end with '.php' 686 && file_exists( WP_PLUGIN_DIR . '/' . $plugin ) // $plugin must exist 687 // not already included as a network plugin 688 && ( ! $network_plugins || ! in_array( WP_PLUGIN_DIR . '/' . $plugin, $network_plugins ) ) 689 ) { 690 $plugins[] = WP_PLUGIN_DIR . '/' . $plugin; 691 } 692 } 693 694 /* 695 * Remove plugins from the list of active plugins when we're on an endpoint 696 * that should be protected against WSODs and the plugin is paused. 697 */ 698 if ( wp_is_recovery_mode() ) { 699 $plugins = wp_skip_paused_plugins( $plugins ); 700 } 701 702 return $plugins; 703 } 704 705 /** 706 * Filters a given list of plugins, removing any paused plugins from it. 707 * 708 * @since 5.2.0 709 * 710 * @param array $plugins List of absolute plugin main file paths. 711 * @return array Filtered value of $plugins, without any paused plugins. 712 */ 713 function wp_skip_paused_plugins( array $plugins ) { 714 $paused_plugins = wp_paused_plugins()->get_all(); 715 716 if ( empty( $paused_plugins ) ) { 717 return $plugins; 718 } 719 720 foreach ( $plugins as $index => $plugin ) { 721 list( $plugin ) = explode( '/', plugin_basename( $plugin ) ); 722 723 if ( array_key_exists( $plugin, $paused_plugins ) ) { 724 unset( $plugins[ $index ] ); 725 726 // Store list of paused plugins for displaying an admin notice. 727 $GLOBALS['_paused_plugins'][ $plugin ] = $paused_plugins[ $plugin ]; 728 } 729 } 730 731 return $plugins; 732 } 733 734 /** 735 * Retrieves an array of active and valid themes. 736 * 737 * While upgrading or installing WordPress, no themes are returned. 738 * 739 * @since 5.1.0 740 * @access private 741 * 742 * @return array Array of paths to theme directories. 743 */ 744 function wp_get_active_and_valid_themes() { 745 global $pagenow; 746 747 $themes = array(); 748 749 if ( wp_installing() && 'wp-activate.php' !== $pagenow ) { 750 return $themes; 751 } 752 753 if ( TEMPLATEPATH !== STYLESHEETPATH ) { 754 $themes[] = STYLESHEETPATH; 755 } 756 757 $themes[] = TEMPLATEPATH; 758 759 /* 760 * Remove themes from the list of active themes when we're on an endpoint 761 * that should be protected against WSODs and the theme is paused. 762 */ 763 if ( wp_is_recovery_mode() ) { 764 $themes = wp_skip_paused_themes( $themes ); 765 766 // If no active and valid themes exist, skip loading themes. 767 if ( empty( $themes ) ) { 768 add_filter( 'wp_using_themes', '__return_false' ); 769 } 770 } 771 772 return $themes; 773 } 774 775 /** 776 * Filters a given list of themes, removing any paused themes from it. 777 * 778 * @since 5.2.0 779 * 780 * @param array $themes List of absolute theme directory paths. 781 * @return array Filtered value of $themes, without any paused themes. 782 */ 783 function wp_skip_paused_themes( array $themes ) { 784 $paused_themes = wp_paused_themes()->get_all(); 785 786 if ( empty( $paused_themes ) ) { 787 return $themes; 788 } 789 790 foreach ( $themes as $index => $theme ) { 791 $theme = basename( $theme ); 792 793 if ( array_key_exists( $theme, $paused_themes ) ) { 794 unset( $themes[ $index ] ); 795 796 // Store list of paused themes for displaying an admin notice. 797 $GLOBALS['_paused_themes'][ $theme ] = $paused_themes[ $theme ]; 798 } 799 } 800 801 return $themes; 802 } 803 804 /** 805 * Is WordPress in Recovery Mode. 806 * 807 * In this mode, plugins or themes that cause WSODs will be paused. 808 * 809 * @since 5.2.0 810 * 811 * @return bool 812 */ 813 function wp_is_recovery_mode() { 814 return wp_recovery_mode()->is_active(); 815 } 816 817 /** 818 * Determines whether we are currently on an endpoint that should be protected against WSODs. 819 * 820 * @since 5.2.0 821 * 822 * @return bool True if the current endpoint should be protected. 823 */ 824 function is_protected_endpoint() { 825 // Protect login pages. 826 if ( isset( $GLOBALS['pagenow'] ) && 'wp-login.php' === $GLOBALS['pagenow'] ) { 827 return true; 828 } 829 830 // Protect the admin backend. 831 if ( is_admin() && ! wp_doing_ajax() ) { 832 return true; 833 } 834 835 // Protect AJAX actions that could help resolve a fatal error should be available. 836 if ( is_protected_ajax_action() ) { 837 return true; 838 } 839 840 /** 841 * Filters whether the current request is against a protected endpoint. 842 * 843 * This filter is only fired when an endpoint is requested which is not already protected by 844 * WordPress core. As such, it exclusively allows providing further protected endpoints in 845 * addition to the admin backend, login pages and protected AJAX actions. 846 * 847 * @since 5.2.0 848 * 849 * @param bool $is_protected_endpoint Whether the currently requested endpoint is protected. Default false. 850 */ 851 return (bool) apply_filters( 'is_protected_endpoint', false ); 852 } 853 854 /** 855 * Determines whether we are currently handling an AJAX action that should be protected against WSODs. 856 * 857 * @since 5.2.0 858 * 859 * @return bool True if the current AJAX action should be protected. 860 */ 861 function is_protected_ajax_action() { 862 if ( ! wp_doing_ajax() ) { 863 return false; 864 } 865 866 if ( ! isset( $_REQUEST['action'] ) ) { 867 return false; 868 } 869 870 $actions_to_protect = array( 871 'edit-theme-plugin-file', // Saving changes in the core code editor. 872 'heartbeat', // Keep the heart beating. 873 'install-plugin', // Installing a new plugin. 874 'install-theme', // Installing a new theme. 875 'search-plugins', // Searching in the list of plugins. 876 'search-install-plugins', // Searching for a plugin in the plugin install screen. 877 'update-plugin', // Update an existing plugin. 878 'update-theme', // Update an existing theme. 879 ); 880 881 /** 882 * Filters the array of protected AJAX actions. 883 * 884 * This filter is only fired when doing AJAX and the AJAX request has an 'action' property. 885 * 886 * @since 5.2.0 887 * 888 * @param array $actions_to_protect Array of strings with AJAX actions to protect. 889 */ 890 $actions_to_protect = (array) apply_filters( 'wp_protected_ajax_actions', $actions_to_protect ); 891 892 if ( ! in_array( $_REQUEST['action'], $actions_to_protect, true ) ) { 893 return false; 894 } 895 896 return true; 897 } 898 899 /** 900 * Set internal encoding. 901 * 902 * In most cases the default internal encoding is latin1, which is 903 * of no use, since we want to use the `mb_` functions for `utf-8` strings. 904 * 905 * @since 3.0.0 906 * @access private 907 */ 908 function wp_set_internal_encoding() { 909 if ( function_exists( 'mb_internal_encoding' ) ) { 910 $charset = get_option( 'blog_charset' ); 911 // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged 912 if ( ! $charset || ! @mb_internal_encoding( $charset ) ) { 913 mb_internal_encoding( 'UTF-8' ); 914 } 915 } 916 } 917 918 /** 919 * Add magic quotes to `$_GET`, `$_POST`, `$_COOKIE`, and `$_SERVER`. 920 * 921 * Also forces `$_REQUEST` to be `$_GET + $_POST`. If `$_SERVER`, 922 * `$_COOKIE`, or `$_ENV` are needed, use those superglobals directly. 923 * 924 * @since 3.0.0 925 * @access private 926 */ 927 function wp_magic_quotes() { 928 // Escape with wpdb. 929 $_GET = add_magic_quotes( $_GET ); 930 $_POST = add_magic_quotes( $_POST ); 931 $_COOKIE = add_magic_quotes( $_COOKIE ); 932 $_SERVER = add_magic_quotes( $_SERVER ); 933 934 // Force REQUEST to be GET + POST. 935 $_REQUEST = array_merge( $_GET, $_POST ); 936 } 937 938 /** 939 * Runs just before PHP shuts down execution. 940 * 941 * @since 1.2.0 942 * @access private 943 */ 944 function shutdown_action_hook() { 945 /** 946 * Fires just before PHP shuts down execution. 947 * 948 * @since 1.2.0 949 */ 950 do_action( 'shutdown' ); 951 952 wp_cache_close(); 953 } 954 955 /** 956 * Copy an object. 957 * 958 * @since 2.7.0 959 * @deprecated 3.2.0 960 * 961 * @param object $object The object to clone. 962 * @return object The cloned object. 963 */ 964 function wp_clone( $object ) { 965 // Use parens for clone to accommodate PHP 4. See #17880 966 return clone( $object ); 967 } 968 969 /** 970 * Determines whether the current request is for an administrative interface page. 971 * 972 * Does not check if the user is an administrator; use current_user_can() 973 * for checking roles and capabilities. 974 * 975 * For more information on this and similar theme functions, check out 976 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 977 * Conditional Tags} article in the Theme Developer Handbook. 978 * 979 * @since 1.5.1 980 * 981 * @global WP_Screen $current_screen WordPress current screen object. 982 * 983 * @return bool True if inside WordPress administration interface, false otherwise. 984 */ 985 function is_admin() { 986 if ( isset( $GLOBALS['current_screen'] ) ) { 987 return $GLOBALS['current_screen']->in_admin(); 988 } elseif ( defined( 'WP_ADMIN' ) ) { 989 return WP_ADMIN; 990 } 991 992 return false; 993 } 994 995 /** 996 * Whether the current request is for a site's admininstrative interface. 997 * 998 * e.g. `/wp-admin/` 999 * 1000 * Does not check if the user is an administrator; use current_user_can() 1001 * for checking roles and capabilities. 1002 * 1003 * @since 3.1.0 1004 * 1005 * @global WP_Screen $current_screen WordPress current screen object. 1006 * 1007 * @return bool True if inside WordPress blog administration pages. 1008 */ 1009 function is_blog_admin() { 1010 if ( isset( $GLOBALS['current_screen'] ) ) { 1011 return $GLOBALS['current_screen']->in_admin( 'site' ); 1012 } elseif ( defined( 'WP_BLOG_ADMIN' ) ) { 1013 return WP_BLOG_ADMIN; 1014 } 1015 1016 return false; 1017 } 1018 1019 /** 1020 * Whether the current request is for the network administrative interface. 1021 * 1022 * e.g. `/wp-admin/network/` 1023 * 1024 * Does not check if the user is an administrator; use current_user_can() 1025 * for checking roles and capabilities. 1026 * 1027 * Does not check if the site is a Multisite network; use is_multisite() 1028 * for checking if Multisite is enabled. 1029 * 1030 * @since 3.1.0 1031 * 1032 * @global WP_Screen $current_screen WordPress current screen object. 1033 * 1034 * @return bool True if inside WordPress network administration pages. 1035 */ 1036 function is_network_admin() { 1037 if ( isset( $GLOBALS['current_screen'] ) ) { 1038 return $GLOBALS['current_screen']->in_admin( 'network' ); 1039 } elseif ( defined( 'WP_NETWORK_ADMIN' ) ) { 1040 return WP_NETWORK_ADMIN; 1041 } 1042 1043 return false; 1044 } 1045 1046 /** 1047 * Whether the current request is for a user admin screen. 1048 * 1049 * e.g. `/wp-admin/user/` 1050 * 1051 * Does not check if the user is an administrator; use current_user_can() 1052 * for checking roles and capabilities. 1053 * 1054 * @since 3.1.0 1055 * 1056 * @global WP_Screen $current_screen WordPress current screen object. 1057 * 1058 * @return bool True if inside WordPress user administration pages. 1059 */ 1060 function is_user_admin() { 1061 if ( isset( $GLOBALS['current_screen'] ) ) { 1062 return $GLOBALS['current_screen']->in_admin( 'user' ); 1063 } elseif ( defined( 'WP_USER_ADMIN' ) ) { 1064 return WP_USER_ADMIN; 1065 } 1066 1067 return false; 1068 } 1069 1070 /** 1071 * If Multisite is enabled. 1072 * 1073 * @since 3.0.0 1074 * 1075 * @return bool True if Multisite is enabled, false otherwise. 1076 */ 1077 function is_multisite() { 1078 if ( defined( 'MULTISITE' ) ) { 1079 return MULTISITE; 1080 } 1081 1082 if ( defined( 'SUBDOMAIN_INSTALL' ) || defined( 'VHOST' ) || defined( 'SUNRISE' ) ) { 1083 return true; 1084 } 1085 1086 return false; 1087 } 1088 1089 /** 1090 * Retrieve the current site ID. 1091 * 1092 * @since 3.1.0 1093 * 1094 * @global int $blog_id 1095 * 1096 * @return int Site ID. 1097 */ 1098 function get_current_blog_id() { 1099 global $blog_id; 1100 return absint( $blog_id ); 1101 } 1102 1103 /** 1104 * Retrieves the current network ID. 1105 * 1106 * @since 4.6.0 1107 * 1108 * @return int The ID of the current network. 1109 */ 1110 function get_current_network_id() { 1111 if ( ! is_multisite() ) { 1112 return 1; 1113 } 1114 1115 $current_network = get_network(); 1116 1117 if ( ! isset( $current_network->id ) ) { 1118 return get_main_network_id(); 1119 } 1120 1121 return absint( $current_network->id ); 1122 } 1123 1124 /** 1125 * Attempt an early load of translations. 1126 * 1127 * Used for errors encountered during the initial loading process, before 1128 * the locale has been properly detected and loaded. 1129 * 1130 * Designed for unusual load sequences (like setup-config.php) or for when 1131 * the script will then terminate with an error, otherwise there is a risk 1132 * that a file can be double-included. 1133 * 1134 * @since 3.4.0 1135 * @access private 1136 * 1137 * @global WP_Locale $wp_locale WordPress date and time locale object. 1138 * 1139 * @staticvar bool $loaded 1140 */ 1141 function wp_load_translations_early() { 1142 global $wp_locale; 1143 1144 static $loaded = false; 1145 if ( $loaded ) { 1146 return; 1147 } 1148 $loaded = true; 1149 1150 if ( function_exists( 'did_action' ) && did_action( 'init' ) ) { 1151 return; 1152 } 1153 1154 // We need $wp_local_package 1155 require ABSPATH . WPINC . '/version.php'; 1156 1157 // Translation and localization 1158 require_once ABSPATH . WPINC . '/pomo/mo.php'; 1159 require_once ABSPATH . WPINC . '/l10n.php'; 1160 require_once ABSPATH . WPINC . '/class-wp-locale.php'; 1161 require_once ABSPATH . WPINC . '/class-wp-locale-switcher.php'; 1162 1163 // General libraries 1164 require_once ABSPATH . WPINC . '/plugin.php'; 1165 1166 $locales = array(); 1167 $locations = array(); 1168 1169 while ( true ) { 1170 if ( defined( 'WPLANG' ) ) { 1171 if ( '' == WPLANG ) { 1172 break; 1173 } 1174 $locales[] = WPLANG; 1175 } 1176 1177 if ( isset( $wp_local_package ) ) { 1178 $locales[] = $wp_local_package; 1179 } 1180 1181 if ( ! $locales ) { 1182 break; 1183 } 1184 1185 if ( defined( 'WP_LANG_DIR' ) && @is_dir( WP_LANG_DIR ) ) { 1186 $locations[] = WP_LANG_DIR; 1187 } 1188 1189 if ( defined( 'WP_CONTENT_DIR' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) ) { 1190 $locations[] = WP_CONTENT_DIR . '/languages'; 1191 } 1192 1193 if ( @is_dir( ABSPATH . 'wp-content/languages' ) ) { 1194 $locations[] = ABSPATH . 'wp-content/languages'; 1195 } 1196 1197 if ( @is_dir( ABSPATH . WPINC . '/languages' ) ) { 1198 $locations[] = ABSPATH . WPINC . '/languages'; 1199 } 1200 1201 if ( ! $locations ) { 1202 break; 1203 } 1204 1205 $locations = array_unique( $locations ); 1206 1207 foreach ( $locales as $locale ) { 1208 foreach ( $locations as $location ) { 1209 if ( file_exists( $location . '/' . $locale . '.mo' ) ) { 1210 load_textdomain( 'default', $location . '/' . $locale . '.mo' ); 1211 if ( defined( 'WP_SETUP_CONFIG' ) && file_exists( $location . '/admin-' . $locale . '.mo' ) ) { 1212 load_textdomain( 'default', $location . '/admin-' . $locale . '.mo' ); 1213 } 1214 break 2; 1215 } 1216 } 1217 } 1218 1219 break; 1220 } 1221 1222 $wp_locale = new WP_Locale(); 1223 } 1224 1225 /** 1226 * Check or set whether WordPress is in "installation" mode. 1227 * 1228 * If the `WP_INSTALLING` constant is defined during the bootstrap, `wp_installing()` will default to `true`. 1229 * 1230 * @since 4.4.0 1231 * 1232 * @staticvar bool $installing 1233 * 1234 * @param bool $is_installing Optional. True to set WP into Installing mode, false to turn Installing mode off. 1235 * Omit this parameter if you only want to fetch the current status. 1236 * @return bool True if WP is installing, otherwise false. When a `$is_installing` is passed, the function will 1237 * report whether WP was in installing mode prior to the change to `$is_installing`. 1238 */ 1239 function wp_installing( $is_installing = null ) { 1240 static $installing = null; 1241 1242 // Support for the `WP_INSTALLING` constant, defined before WP is loaded. 1243 if ( is_null( $installing ) ) { 1244 $installing = defined( 'WP_INSTALLING' ) && WP_INSTALLING; 1245 } 1246 1247 if ( ! is_null( $is_installing ) ) { 1248 $old_installing = $installing; 1249 $installing = $is_installing; 1250 return (bool) $old_installing; 1251 } 1252 1253 return (bool) $installing; 1254 } 1255 1256 /** 1257 * Determines if SSL is used. 1258 * 1259 * @since 2.6.0 1260 * @since 4.6.0 Moved from functions.php to load.php. 1261 * 1262 * @return bool True if SSL, otherwise false. 1263 */ 1264 function is_ssl() { 1265 if ( isset( $_SERVER['HTTPS'] ) ) { 1266 if ( 'on' == strtolower( $_SERVER['HTTPS'] ) ) { 1267 return true; 1268 } 1269 1270 if ( '1' == $_SERVER['HTTPS'] ) { 1271 return true; 1272 } 1273 } elseif ( isset( $_SERVER['SERVER_PORT'] ) && ( '443' == $_SERVER['SERVER_PORT'] ) ) { 1274 return true; 1275 } 1276 return false; 1277 } 1278 1279 /** 1280 * Converts a shorthand byte value to an integer byte value. 1281 * 1282 * @since 2.3.0 1283 * @since 4.6.0 Moved from media.php to load.php. 1284 * 1285 * @link https://secure.php.net/manual/en/function.ini-get.php 1286 * @link https://secure.php.net/manual/en/faq.using.php#faq.using.shorthandbytes 1287 * 1288 * @param string $value A (PHP ini) byte value, either shorthand or ordinary. 1289 * @return int An integer byte value. 1290 */ 1291 function wp_convert_hr_to_bytes( $value ) { 1292 $value = strtolower( trim( $value ) ); 1293 $bytes = (int) $value; 1294 1295 if ( false !== strpos( $value, 'g' ) ) { 1296 $bytes *= GB_IN_BYTES; 1297 } elseif ( false !== strpos( $value, 'm' ) ) { 1298 $bytes *= MB_IN_BYTES; 1299 } elseif ( false !== strpos( $value, 'k' ) ) { 1300 $bytes *= KB_IN_BYTES; 1301 } 1302 1303 // Deal with large (float) values which run into the maximum integer size. 1304 return min( $bytes, PHP_INT_MAX ); 1305 } 1306 1307 /** 1308 * Determines whether a PHP ini value is changeable at runtime. 1309 * 1310 * @since 4.6.0 1311 * 1312 * @staticvar array $ini_all 1313 * 1314 * @link https://secure.php.net/manual/en/function.ini-get-all.php 1315 * 1316 * @param string $setting The name of the ini setting to check. 1317 * @return bool True if the value is changeable at runtime. False otherwise. 1318 */ 1319 function wp_is_ini_value_changeable( $setting ) { 1320 static $ini_all; 1321 1322 if ( ! isset( $ini_all ) ) { 1323 $ini_all = false; 1324 // Sometimes `ini_get_all()` is disabled via the `disable_functions` option for "security purposes". 1325 if ( function_exists( 'ini_get_all' ) ) { 1326 $ini_all = ini_get_all(); 1327 } 1328 } 1329 1330 // 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. 1331 if ( isset( $ini_all[ $setting ]['access'] ) && ( INI_ALL === ( $ini_all[ $setting ]['access'] & 7 ) || INI_USER === ( $ini_all[ $setting ]['access'] & 7 ) ) ) { 1332 return true; 1333 } 1334 1335 // If we were unable to retrieve the details, fail gracefully to assume it's changeable. 1336 if ( ! is_array( $ini_all ) ) { 1337 return true; 1338 } 1339 1340 return false; 1341 } 1342 1343 /** 1344 * Determines whether the current request is a WordPress Ajax request. 1345 * 1346 * @since 4.7.0 1347 * 1348 * @return bool True if it's a WordPress Ajax request, false otherwise. 1349 */ 1350 function wp_doing_ajax() { 1351 /** 1352 * Filters whether the current request is a WordPress Ajax request. 1353 * 1354 * @since 4.7.0 1355 * 1356 * @param bool $wp_doing_ajax Whether the current request is a WordPress Ajax request. 1357 */ 1358 return apply_filters( 'wp_doing_ajax', defined( 'DOING_AJAX' ) && DOING_AJAX ); 1359 } 1360 1361 /** 1362 * Determines whether the current request should use themes. 1363 * 1364 * @since 5.1.0 1365 * 1366 * @return bool True if themes should be used, false otherwise. 1367 */ 1368 function wp_using_themes() { 1369 /** 1370 * Filters whether the current request should use themes. 1371 * 1372 * @since 5.1.0 1373 * 1374 * @param bool $wp_using_themes Whether the current request should use themes. 1375 */ 1376 return apply_filters( 'wp_using_themes', defined( 'WP_USE_THEMES' ) && WP_USE_THEMES ); 1377 } 1378 1379 /** 1380 * Determines whether the current request is a WordPress cron request. 1381 * 1382 * @since 4.8.0 1383 * 1384 * @return bool True if it's a WordPress cron request, false otherwise. 1385 */ 1386 function wp_doing_cron() { 1387 /** 1388 * Filters whether the current request is a WordPress cron request. 1389 * 1390 * @since 4.8.0 1391 * 1392 * @param bool $wp_doing_cron Whether the current request is a WordPress cron request. 1393 */ 1394 return apply_filters( 'wp_doing_cron', defined( 'DOING_CRON' ) && DOING_CRON ); 1395 } 1396 1397 /** 1398 * Check whether variable is a WordPress Error. 1399 * 1400 * Returns true if $thing is an object of the WP_Error class. 1401 * 1402 * @since 2.1.0 1403 * 1404 * @param mixed $thing Check if unknown variable is a WP_Error object. 1405 * @return bool True, if WP_Error. False, if not WP_Error. 1406 */ 1407 function is_wp_error( $thing ) { 1408 return ( $thing instanceof WP_Error ); 1409 } 1410 1411 /** 1412 * Determines whether file modifications are allowed. 1413 * 1414 * @since 4.8.0 1415 * 1416 * @param string $context The usage context. 1417 * @return bool True if file modification is allowed, false otherwise. 1418 */ 1419 function wp_is_file_mod_allowed( $context ) { 1420 /** 1421 * Filters whether file modifications are allowed. 1422 * 1423 * @since 4.8.0 1424 * 1425 * @param bool $file_mod_allowed Whether file modifications are allowed. 1426 * @param string $context The usage context. 1427 */ 1428 return apply_filters( 'file_mod_allowed', ! defined( 'DISALLOW_FILE_MODS' ) || ! DISALLOW_FILE_MODS, $context ); 1429 } 1430 1431 /** 1432 * Start scraping edited file errors. 1433 * 1434 * @since 4.9.0 1435 */ 1436 function wp_start_scraping_edited_file_errors() { 1437 if ( ! isset( $_REQUEST['wp_scrape_key'] ) || ! isset( $_REQUEST['wp_scrape_nonce'] ) ) { 1438 return; 1439 } 1440 $key = substr( sanitize_key( wp_unslash( $_REQUEST['wp_scrape_key'] ) ), 0, 32 ); 1441 $nonce = wp_unslash( $_REQUEST['wp_scrape_nonce'] ); 1442 1443 if ( get_transient( 'scrape_key_' . $key ) !== $nonce ) { 1444 echo "###### wp_scraping_result_start:$key ######"; 1445 echo wp_json_encode( 1446 array( 1447 'code' => 'scrape_nonce_failure', 1448 'message' => __( 'Scrape nonce check failed. Please try again.' ), 1449 ) 1450 ); 1451 echo "###### wp_scraping_result_end:$key ######"; 1452 die(); 1453 } 1454 if ( ! defined( 'WP_SANDBOX_SCRAPING' ) ) { 1455 define( 'WP_SANDBOX_SCRAPING', true ); 1456 } 1457 register_shutdown_function( 'wp_finalize_scraping_edited_file_errors', $key ); 1458 } 1459 1460 /** 1461 * Finalize scraping for edited file errors. 1462 * 1463 * @since 4.9.0 1464 * 1465 * @param string $scrape_key Scrape key. 1466 */ 1467 function wp_finalize_scraping_edited_file_errors( $scrape_key ) { 1468 $error = error_get_last(); 1469 echo "\n###### wp_scraping_result_start:$scrape_key ######\n"; 1470 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 ) ) { 1471 $error = str_replace( ABSPATH, '', $error ); 1472 echo wp_json_encode( $error ); 1473 } else { 1474 echo wp_json_encode( true ); 1475 } 1476 echo "\n###### wp_scraping_result_end:$scrape_key ######\n"; 1477 } 1478 1479 /** 1480 * Checks whether current request is a JSON request, or is expecting a JSON response. 1481 * 1482 * @since 5.0.0 1483 * 1484 * @return bool True if Accepts or Content-Type headers contain application/json, false otherwise. 1485 */ 1486 function wp_is_json_request() { 1487 1488 if ( isset( $_SERVER['HTTP_ACCEPT'] ) && false !== strpos( $_SERVER['HTTP_ACCEPT'], 'application/json' ) ) { 1489 return true; 1490 } 1491 1492 if ( isset( $_SERVER['CONTENT_TYPE'] ) && 'application/json' === $_SERVER['CONTENT_TYPE'] ) { 1493 return true; 1494 } 1495 1496 return false; 1497 1498 } 1499 1500 /** 1501 * Checks whether current request is a JSONP request, or is expecting a JSONP response. 1502 * 1503 * @since 5.2.0 1504 * 1505 * @return bool True if JSONP request, false otherwise. 1506 */ 1507 function wp_is_jsonp_request() { 1508 if ( ! isset( $_GET['_jsonp'] ) ) { 1509 return false; 1510 } 1511 1512 if ( ! function_exists( 'wp_check_jsonp_callback' ) ) { 1513 require_once ABSPATH . WPINC . '/functions.php'; 1514 } 1515 1516 $jsonp_callback = $_GET['_jsonp']; 1517 if ( ! wp_check_jsonp_callback( $jsonp_callback ) ) { 1518 return false; 1519 } 1520 1521 /** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */ 1522 $jsonp_enabled = apply_filters( 'rest_jsonp_enabled', true ); 1523 1524 return $jsonp_enabled; 1525 1526 } 1527 1528 /** 1529 * Checks whether current request is an XML request, or is expecting an XML response. 1530 * 1531 * @since 5.2.0 1532 * 1533 * @return bool True if Accepts or Content-Type headers contain xml, 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: Thu Sep 19 01:00:03 2019 | Cross-referenced by PHPXref 0.7.1 |