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1 <?php 2 /** 3 * Upgrade API: WP_Upgrader class 4 * 5 * Requires skin classes and WP_Upgrader subclasses for backward compatibility. 6 * 7 * @package WordPress 8 * @subpackage Upgrader 9 * @since 2.8.0 10 */ 11 12 /** WP_Upgrader_Skin class */ 13 require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader-skin.php'; 14 15 /** Plugin_Upgrader_Skin class */ 16 require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader-skin.php'; 17 18 /** Theme_Upgrader_Skin class */ 19 require_once ABSPATH . 'wp-admin/includes/class-theme-upgrader-skin.php'; 20 21 /** Bulk_Upgrader_Skin class */ 22 require_once ABSPATH . 'wp-admin/includes/class-bulk-upgrader-skin.php'; 23 24 /** Bulk_Plugin_Upgrader_Skin class */ 25 require_once ABSPATH . 'wp-admin/includes/class-bulk-plugin-upgrader-skin.php'; 26 27 /** Bulk_Theme_Upgrader_Skin class */ 28 require_once ABSPATH . 'wp-admin/includes/class-bulk-theme-upgrader-skin.php'; 29 30 /** Plugin_Installer_Skin class */ 31 require_once ABSPATH . 'wp-admin/includes/class-plugin-installer-skin.php'; 32 33 /** Theme_Installer_Skin class */ 34 require_once ABSPATH . 'wp-admin/includes/class-theme-installer-skin.php'; 35 36 /** Language_Pack_Upgrader_Skin class */ 37 require_once ABSPATH . 'wp-admin/includes/class-language-pack-upgrader-skin.php'; 38 39 /** Automatic_Upgrader_Skin class */ 40 require_once ABSPATH . 'wp-admin/includes/class-automatic-upgrader-skin.php'; 41 42 /** WP_Ajax_Upgrader_Skin class */ 43 require_once ABSPATH . 'wp-admin/includes/class-wp-ajax-upgrader-skin.php'; 44 45 /** 46 * Core class used for upgrading/installing a local set of files via 47 * the Filesystem Abstraction classes from a Zip file. 48 * 49 * @since 2.8.0 50 */ 51 #[AllowDynamicProperties] 52 class WP_Upgrader { 53 54 /** 55 * The error/notification strings used to update the user on the progress. 56 * 57 * @since 2.8.0 58 * @var array $strings 59 */ 60 public $strings = array(); 61 62 /** 63 * The upgrader skin being used. 64 * 65 * @since 2.8.0 66 * @var Automatic_Upgrader_Skin|WP_Upgrader_Skin $skin 67 */ 68 public $skin = null; 69 70 /** 71 * The result of the installation. 72 * 73 * This is set by WP_Upgrader::install_package(), only when the package is installed 74 * successfully. It will then be an array, unless a WP_Error is returned by the 75 * {@see 'upgrader_post_install'} filter. In that case, the WP_Error will be assigned to 76 * it. 77 * 78 * @since 2.8.0 79 * 80 * @var array|WP_Error $result { 81 * @type string $source The full path to the source the files were installed from. 82 * @type string $source_files List of all the files in the source directory. 83 * @type string $destination The full path to the installation destination folder. 84 * @type string $destination_name The name of the destination folder, or empty if `$destination` 85 * and `$local_destination` are the same. 86 * @type string $local_destination The full local path to the destination folder. This is usually 87 * the same as `$destination`. 88 * @type string $remote_destination The full remote path to the destination folder 89 * (i.e., from `$wp_filesystem`). 90 * @type bool $clear_destination Whether the destination folder was cleared. 91 * } 92 */ 93 public $result = array(); 94 95 /** 96 * The total number of updates being performed. 97 * 98 * Set by the bulk update methods. 99 * 100 * @since 3.0.0 101 * @var int $update_count 102 */ 103 public $update_count = 0; 104 105 /** 106 * The current update if multiple updates are being performed. 107 * 108 * Used by the bulk update methods, and incremented for each update. 109 * 110 * @since 3.0.0 111 * @var int 112 */ 113 public $update_current = 0; 114 115 /** 116 * Stores the list of plugins or themes added to temporary backup directory. 117 * 118 * Used by the rollback functions. 119 * 120 * @since 6.3.0 121 * @var array 122 */ 123 private $temp_backups = array(); 124 125 /** 126 * Stores the list of plugins or themes to be restored from temporary backup directory. 127 * 128 * Used by the rollback functions. 129 * 130 * @since 6.3.0 131 * @var array 132 */ 133 private $temp_restores = array(); 134 135 /** 136 * Construct the upgrader with a skin. 137 * 138 * @since 2.8.0 139 * 140 * @param WP_Upgrader_Skin $skin The upgrader skin to use. Default is a WP_Upgrader_Skin 141 * instance. 142 */ 143 public function __construct( $skin = null ) { 144 if ( null === $skin ) { 145 $this->skin = new WP_Upgrader_Skin(); 146 } else { 147 $this->skin = $skin; 148 } 149 } 150 151 /** 152 * Initializes the upgrader. 153 * 154 * This will set the relationship between the skin being used and this upgrader, 155 * and also add the generic strings to `WP_Upgrader::$strings`. 156 * 157 * Additionally, it will schedule a weekly task to clean up the temporary backup directory. 158 * 159 * @since 2.8.0 160 * @since 6.3.0 Added the `schedule_temp_backup_cleanup()` task. 161 */ 162 public function init() { 163 $this->skin->set_upgrader( $this ); 164 $this->generic_strings(); 165 166 if ( ! wp_installing() ) { 167 $this->schedule_temp_backup_cleanup(); 168 } 169 } 170 171 /** 172 * Schedules the cleanup of the temporary backup directory. 173 * 174 * @since 6.3.0 175 */ 176 protected function schedule_temp_backup_cleanup() { 177 if ( false === wp_next_scheduled( 'wp_delete_temp_updater_backups' ) ) { 178 wp_schedule_event( time(), 'weekly', 'wp_delete_temp_updater_backups' ); 179 } 180 } 181 182 /** 183 * Adds the generic strings to WP_Upgrader::$strings. 184 * 185 * @since 2.8.0 186 */ 187 public function generic_strings() { 188 $this->strings['bad_request'] = __( 'Invalid data provided.' ); 189 $this->strings['fs_unavailable'] = __( 'Could not access filesystem.' ); 190 $this->strings['fs_error'] = __( 'Filesystem error.' ); 191 $this->strings['fs_no_root_dir'] = __( 'Unable to locate WordPress root directory.' ); 192 /* translators: %s: Directory name. */ 193 $this->strings['fs_no_content_dir'] = sprintf( __( 'Unable to locate WordPress content directory (%s).' ), 'wp-content' ); 194 $this->strings['fs_no_plugins_dir'] = __( 'Unable to locate WordPress plugin directory.' ); 195 $this->strings['fs_no_themes_dir'] = __( 'Unable to locate WordPress theme directory.' ); 196 /* translators: %s: Directory name. */ 197 $this->strings['fs_no_folder'] = __( 'Unable to locate needed folder (%s).' ); 198 199 $this->strings['no_package'] = __( 'Package not available.' ); 200 $this->strings['download_failed'] = __( 'Download failed.' ); 201 $this->strings['installing_package'] = __( 'Installing the latest version…' ); 202 $this->strings['no_files'] = __( 'The package contains no files.' ); 203 $this->strings['folder_exists'] = __( 'Destination folder already exists.' ); 204 $this->strings['mkdir_failed'] = __( 'Could not create directory.' ); 205 $this->strings['incompatible_archive'] = __( 'The package could not be installed.' ); 206 $this->strings['files_not_writable'] = __( 'The update cannot be installed because some files could not be copied. This is usually due to inconsistent file permissions.' ); 207 $this->strings['dir_not_readable'] = __( 'A directory could not be read.' ); 208 209 $this->strings['maintenance_start'] = __( 'Enabling Maintenance mode…' ); 210 $this->strings['maintenance_end'] = __( 'Disabling Maintenance mode…' ); 211 212 /* translators: %s: upgrade-temp-backup */ 213 $this->strings['temp_backup_mkdir_failed'] = sprintf( __( 'Could not create the %s directory.' ), 'upgrade-temp-backup' ); 214 /* translators: %s: upgrade-temp-backup */ 215 $this->strings['temp_backup_move_failed'] = sprintf( __( 'Could not move the old version to the %s directory.' ), 'upgrade-temp-backup' ); 216 /* translators: %s: The plugin or theme slug. */ 217 $this->strings['temp_backup_restore_failed'] = __( 'Could not restore the original version of %s.' ); 218 /* translators: %s: The plugin or theme slug. */ 219 $this->strings['temp_backup_delete_failed'] = __( 'Could not delete the temporary backup directory for %s.' ); 220 } 221 222 /** 223 * Connects to the filesystem. 224 * 225 * @since 2.8.0 226 * 227 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 228 * 229 * @param string[] $directories Optional. Array of directories. If any of these do 230 * not exist, a WP_Error object will be returned. 231 * Default empty array. 232 * @param bool $allow_relaxed_file_ownership Whether to allow relaxed file ownership. 233 * Default false. 234 * @return bool|WP_Error True if able to connect, false or a WP_Error otherwise. 235 */ 236 public function fs_connect( $directories = array(), $allow_relaxed_file_ownership = false ) { 237 global $wp_filesystem; 238 239 $credentials = $this->skin->request_filesystem_credentials( false, $directories[0], $allow_relaxed_file_ownership ); 240 if ( false === $credentials ) { 241 return false; 242 } 243 244 if ( ! WP_Filesystem( $credentials, $directories[0], $allow_relaxed_file_ownership ) ) { 245 $error = true; 246 if ( is_object( $wp_filesystem ) && $wp_filesystem->errors->has_errors() ) { 247 $error = $wp_filesystem->errors; 248 } 249 // Failed to connect. Error and request again. 250 $this->skin->request_filesystem_credentials( $error, $directories[0], $allow_relaxed_file_ownership ); 251 return false; 252 } 253 254 if ( ! is_object( $wp_filesystem ) ) { 255 return new WP_Error( 'fs_unavailable', $this->strings['fs_unavailable'] ); 256 } 257 258 if ( is_wp_error( $wp_filesystem->errors ) && $wp_filesystem->errors->has_errors() ) { 259 return new WP_Error( 'fs_error', $this->strings['fs_error'], $wp_filesystem->errors ); 260 } 261 262 foreach ( (array) $directories as $dir ) { 263 switch ( $dir ) { 264 case ABSPATH: 265 if ( ! $wp_filesystem->abspath() ) { 266 return new WP_Error( 'fs_no_root_dir', $this->strings['fs_no_root_dir'] ); 267 } 268 break; 269 case WP_CONTENT_DIR: 270 if ( ! $wp_filesystem->wp_content_dir() ) { 271 return new WP_Error( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); 272 } 273 break; 274 case WP_PLUGIN_DIR: 275 if ( ! $wp_filesystem->wp_plugins_dir() ) { 276 return new WP_Error( 'fs_no_plugins_dir', $this->strings['fs_no_plugins_dir'] ); 277 } 278 break; 279 case get_theme_root(): 280 if ( ! $wp_filesystem->wp_themes_dir() ) { 281 return new WP_Error( 'fs_no_themes_dir', $this->strings['fs_no_themes_dir'] ); 282 } 283 break; 284 default: 285 if ( ! $wp_filesystem->find_folder( $dir ) ) { 286 return new WP_Error( 'fs_no_folder', sprintf( $this->strings['fs_no_folder'], esc_html( basename( $dir ) ) ) ); 287 } 288 break; 289 } 290 } 291 return true; 292 } 293 294 /** 295 * Downloads a package. 296 * 297 * @since 2.8.0 298 * @since 5.2.0 Added the `$check_signatures` parameter. 299 * @since 5.5.0 Added the `$hook_extra` parameter. 300 * 301 * @param string $package The URI of the package. If this is the full path to an 302 * existing local file, it will be returned untouched. 303 * @param bool $check_signatures Whether to validate file signatures. Default false. 304 * @param array $hook_extra Extra arguments to pass to the filter hooks. Default empty array. 305 * @return string|WP_Error The full path to the downloaded package file, or a WP_Error object. 306 */ 307 public function download_package( $package, $check_signatures = false, $hook_extra = array() ) { 308 /** 309 * Filters whether to return the package. 310 * 311 * @since 3.7.0 312 * @since 5.5.0 Added the `$hook_extra` parameter. 313 * 314 * @param bool $reply Whether to bail without returning the package. 315 * Default false. 316 * @param string $package The package file name. 317 * @param WP_Upgrader $upgrader The WP_Upgrader instance. 318 * @param array $hook_extra Extra arguments passed to hooked filters. 319 */ 320 $reply = apply_filters( 'upgrader_pre_download', false, $package, $this, $hook_extra ); 321 if ( false !== $reply ) { 322 return $reply; 323 } 324 325 if ( ! preg_match( '!^(http|https|ftp)://!i', $package ) && file_exists( $package ) ) { // Local file or remote? 326 return $package; // Must be a local file. 327 } 328 329 if ( empty( $package ) ) { 330 return new WP_Error( 'no_package', $this->strings['no_package'] ); 331 } 332 333 $this->skin->feedback( 'downloading_package', $package ); 334 335 $download_file = download_url( $package, 300, $check_signatures ); 336 337 if ( is_wp_error( $download_file ) && ! $download_file->get_error_data( 'softfail-filename' ) ) { 338 return new WP_Error( 'download_failed', $this->strings['download_failed'], $download_file->get_error_message() ); 339 } 340 341 return $download_file; 342 } 343 344 /** 345 * Unpacks a compressed package file. 346 * 347 * @since 2.8.0 348 * 349 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 350 * 351 * @param string $package Full path to the package file. 352 * @param bool $delete_package Optional. Whether to delete the package file after attempting 353 * to unpack it. Default true. 354 * @return string|WP_Error The path to the unpacked contents, or a WP_Error on failure. 355 */ 356 public function unpack_package( $package, $delete_package = true ) { 357 global $wp_filesystem; 358 359 $this->skin->feedback( 'unpack_package' ); 360 361 if ( ! $wp_filesystem->wp_content_dir() ) { 362 return new WP_Error( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); 363 } 364 365 $upgrade_folder = $wp_filesystem->wp_content_dir() . 'upgrade/'; 366 367 // Clean up contents of upgrade directory beforehand. 368 $upgrade_files = $wp_filesystem->dirlist( $upgrade_folder ); 369 if ( ! empty( $upgrade_files ) ) { 370 foreach ( $upgrade_files as $file ) { 371 $wp_filesystem->delete( $upgrade_folder . $file['name'], true ); 372 } 373 } 374 375 // We need a working directory - strip off any .tmp or .zip suffixes. 376 $working_dir = $upgrade_folder . basename( basename( $package, '.tmp' ), '.zip' ); 377 378 // Clean up working directory. 379 if ( $wp_filesystem->is_dir( $working_dir ) ) { 380 $wp_filesystem->delete( $working_dir, true ); 381 } 382 383 // Unzip package to working directory. 384 $result = unzip_file( $package, $working_dir ); 385 386 // Once extracted, delete the package if required. 387 if ( $delete_package ) { 388 unlink( $package ); 389 } 390 391 if ( is_wp_error( $result ) ) { 392 $wp_filesystem->delete( $working_dir, true ); 393 if ( 'incompatible_archive' === $result->get_error_code() ) { 394 return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], $result->get_error_data() ); 395 } 396 return $result; 397 } 398 399 return $working_dir; 400 } 401 402 /** 403 * Flattens the results of WP_Filesystem_Base::dirlist() for iterating over. 404 * 405 * @since 4.9.0 406 * @access protected 407 * 408 * @param array $nested_files Array of files as returned by WP_Filesystem_Base::dirlist(). 409 * @param string $path Relative path to prepend to child nodes. Optional. 410 * @return array A flattened array of the $nested_files specified. 411 */ 412 protected function flatten_dirlist( $nested_files, $path = '' ) { 413 $files = array(); 414 415 foreach ( $nested_files as $name => $details ) { 416 $files[ $path . $name ] = $details; 417 418 // Append children recursively. 419 if ( ! empty( $details['files'] ) ) { 420 $children = $this->flatten_dirlist( $details['files'], $path . $name . '/' ); 421 422 // Merge keeping possible numeric keys, which array_merge() will reindex from 0..n. 423 $files = $files + $children; 424 } 425 } 426 427 return $files; 428 } 429 430 /** 431 * Clears the directory where this item is going to be installed into. 432 * 433 * @since 4.3.0 434 * 435 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 436 * 437 * @param string $remote_destination The location on the remote filesystem to be cleared. 438 * @return true|WP_Error True upon success, WP_Error on failure. 439 */ 440 public function clear_destination( $remote_destination ) { 441 global $wp_filesystem; 442 443 $files = $wp_filesystem->dirlist( $remote_destination, true, true ); 444 445 // False indicates that the $remote_destination doesn't exist. 446 if ( false === $files ) { 447 return true; 448 } 449 450 // Flatten the file list to iterate over. 451 $files = $this->flatten_dirlist( $files ); 452 453 // Check all files are writable before attempting to clear the destination. 454 $unwritable_files = array(); 455 456 // Check writability. 457 foreach ( $files as $filename => $file_details ) { 458 if ( ! $wp_filesystem->is_writable( $remote_destination . $filename ) ) { 459 // Attempt to alter permissions to allow writes and try again. 460 $wp_filesystem->chmod( $remote_destination . $filename, ( 'd' === $file_details['type'] ? FS_CHMOD_DIR : FS_CHMOD_FILE ) ); 461 if ( ! $wp_filesystem->is_writable( $remote_destination . $filename ) ) { 462 $unwritable_files[] = $filename; 463 } 464 } 465 } 466 467 if ( ! empty( $unwritable_files ) ) { 468 return new WP_Error( 'files_not_writable', $this->strings['files_not_writable'], implode( ', ', $unwritable_files ) ); 469 } 470 471 if ( ! $wp_filesystem->delete( $remote_destination, true ) ) { 472 return new WP_Error( 'remove_old_failed', $this->strings['remove_old_failed'] ); 473 } 474 475 return true; 476 } 477 478 /** 479 * Install a package. 480 * 481 * Copies the contents of a package from a source directory, and installs them in 482 * a destination directory. Optionally removes the source. It can also optionally 483 * clear out the destination folder if it already exists. 484 * 485 * @since 2.8.0 486 * @since 6.2.0 Use move_dir() instead of copy_dir() when possible. 487 * 488 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 489 * @global array $wp_theme_directories 490 * 491 * @param array|string $args { 492 * Optional. Array or string of arguments for installing a package. Default empty array. 493 * 494 * @type string $source Required path to the package source. Default empty. 495 * @type string $destination Required path to a folder to install the package in. 496 * Default empty. 497 * @type bool $clear_destination Whether to delete any files already in the destination 498 * folder. Default false. 499 * @type bool $clear_working Whether to delete the files from the working directory 500 * after copying them to the destination. Default false. 501 * @type bool $abort_if_destination_exists Whether to abort the installation if 502 * the destination folder already exists. Default true. 503 * @type array $hook_extra Extra arguments to pass to the filter hooks called by 504 * WP_Upgrader::install_package(). Default empty array. 505 * } 506 * 507 * @return array|WP_Error The result (also stored in `WP_Upgrader::$result`), or a WP_Error on failure. 508 */ 509 public function install_package( $args = array() ) { 510 global $wp_filesystem, $wp_theme_directories; 511 512 $defaults = array( 513 'source' => '', // Please always pass this. 514 'destination' => '', // ...and this. 515 'clear_destination' => false, 516 'clear_working' => false, 517 'abort_if_destination_exists' => true, 518 'hook_extra' => array(), 519 ); 520 521 $args = wp_parse_args( $args, $defaults ); 522 523 // These were previously extract()'d. 524 $source = $args['source']; 525 $destination = $args['destination']; 526 $clear_destination = $args['clear_destination']; 527 528 /* 529 * Give the upgrade an additional 300 seconds (5 minutes) to ensure the install 530 * doesn't prematurely timeout having used up the maximum script execution time 531 * upacking and downloading in WP_Upgrader->run(). 532 */ 533 if ( function_exists( 'set_time_limit' ) ) { 534 set_time_limit( 300 ); 535 } 536 537 if ( 538 ( ! is_string( $source ) || '' === $source || trim( $source ) !== $source ) || 539 ( ! is_string( $destination ) || '' === $destination || trim( $destination ) !== $destination ) 540 ) { 541 return new WP_Error( 'bad_request', $this->strings['bad_request'] ); 542 } 543 $this->skin->feedback( 'installing_package' ); 544 545 /** 546 * Filters the installation response before the installation has started. 547 * 548 * Returning a value that could be evaluated as a `WP_Error` will effectively 549 * short-circuit the installation, returning that value instead. 550 * 551 * @since 2.8.0 552 * 553 * @param bool|WP_Error $response Installation response. 554 * @param array $hook_extra Extra arguments passed to hooked filters. 555 */ 556 $res = apply_filters( 'upgrader_pre_install', true, $args['hook_extra'] ); 557 558 if ( is_wp_error( $res ) ) { 559 return $res; 560 } 561 562 // Retain the original source and destinations. 563 $remote_source = $args['source']; 564 $local_destination = $destination; 565 566 $dirlist = $wp_filesystem->dirlist( $remote_source ); 567 568 if ( false === $dirlist ) { 569 return new WP_Error( 'source_read_failed', $this->strings['fs_error'], $this->strings['dir_not_readable'] ); 570 } 571 572 $source_files = array_keys( $dirlist ); 573 $remote_destination = $wp_filesystem->find_folder( $local_destination ); 574 575 // Locate which directory to copy to the new folder. This is based on the actual folder holding the files. 576 if ( 1 === count( $source_files ) && $wp_filesystem->is_dir( trailingslashit( $args['source'] ) . $source_files[0] . '/' ) ) { 577 // Only one folder? Then we want its contents. 578 $source = trailingslashit( $args['source'] ) . trailingslashit( $source_files[0] ); 579 } elseif ( 0 === count( $source_files ) ) { 580 // There are no files? 581 return new WP_Error( 'incompatible_archive_empty', $this->strings['incompatible_archive'], $this->strings['no_files'] ); 582 } else { 583 /* 584 * It's only a single file, the upgrader will use the folder name of this file as the destination folder. 585 * Folder name is based on zip filename. 586 */ 587 $source = trailingslashit( $args['source'] ); 588 } 589 590 /** 591 * Filters the source file location for the upgrade package. 592 * 593 * @since 2.8.0 594 * @since 4.4.0 The $hook_extra parameter became available. 595 * 596 * @param string $source File source location. 597 * @param string $remote_source Remote file source location. 598 * @param WP_Upgrader $upgrader WP_Upgrader instance. 599 * @param array $hook_extra Extra arguments passed to hooked filters. 600 */ 601 $source = apply_filters( 'upgrader_source_selection', $source, $remote_source, $this, $args['hook_extra'] ); 602 603 if ( is_wp_error( $source ) ) { 604 return $source; 605 } 606 607 if ( ! empty( $args['hook_extra']['temp_backup'] ) ) { 608 $temp_backup = $this->move_to_temp_backup_dir( $args['hook_extra']['temp_backup'] ); 609 610 if ( is_wp_error( $temp_backup ) ) { 611 return $temp_backup; 612 } 613 614 $this->temp_backups[] = $args['hook_extra']['temp_backup']; 615 } 616 617 // Has the source location changed? If so, we need a new source_files list. 618 if ( $source !== $remote_source ) { 619 $dirlist = $wp_filesystem->dirlist( $source ); 620 621 if ( false === $dirlist ) { 622 return new WP_Error( 'new_source_read_failed', $this->strings['fs_error'], $this->strings['dir_not_readable'] ); 623 } 624 625 $source_files = array_keys( $dirlist ); 626 } 627 628 /* 629 * Protection against deleting files in any important base directories. 630 * Theme_Upgrader & Plugin_Upgrader also trigger this, as they pass the 631 * destination directory (WP_PLUGIN_DIR / wp-content/themes) intending 632 * to copy the directory into the directory, whilst they pass the source 633 * as the actual files to copy. 634 */ 635 $protected_directories = array( ABSPATH, WP_CONTENT_DIR, WP_PLUGIN_DIR, WP_CONTENT_DIR . '/themes' ); 636 637 if ( is_array( $wp_theme_directories ) ) { 638 $protected_directories = array_merge( $protected_directories, $wp_theme_directories ); 639 } 640 641 if ( in_array( $destination, $protected_directories, true ) ) { 642 $remote_destination = trailingslashit( $remote_destination ) . trailingslashit( basename( $source ) ); 643 $destination = trailingslashit( $destination ) . trailingslashit( basename( $source ) ); 644 } 645 646 if ( $clear_destination ) { 647 // We're going to clear the destination if there's something there. 648 $this->skin->feedback( 'remove_old' ); 649 650 $removed = $this->clear_destination( $remote_destination ); 651 652 /** 653 * Filters whether the upgrader cleared the destination. 654 * 655 * @since 2.8.0 656 * 657 * @param true|WP_Error $removed Whether the destination was cleared. 658 * True upon success, WP_Error on failure. 659 * @param string $local_destination The local package destination. 660 * @param string $remote_destination The remote package destination. 661 * @param array $hook_extra Extra arguments passed to hooked filters. 662 */ 663 $removed = apply_filters( 'upgrader_clear_destination', $removed, $local_destination, $remote_destination, $args['hook_extra'] ); 664 665 if ( is_wp_error( $removed ) ) { 666 return $removed; 667 } 668 } elseif ( $args['abort_if_destination_exists'] && $wp_filesystem->exists( $remote_destination ) ) { 669 /* 670 * If we're not clearing the destination folder and something exists there already, bail. 671 * But first check to see if there are actually any files in the folder. 672 */ 673 $_files = $wp_filesystem->dirlist( $remote_destination ); 674 if ( ! empty( $_files ) ) { 675 $wp_filesystem->delete( $remote_source, true ); // Clear out the source files. 676 return new WP_Error( 'folder_exists', $this->strings['folder_exists'], $remote_destination ); 677 } 678 } 679 680 /* 681 * If 'clear_working' is false, the source should not be removed, so use copy_dir() instead. 682 * 683 * Partial updates, like language packs, may want to retain the destination. 684 * If the destination exists or has contents, this may be a partial update, 685 * and the destination should not be removed, so use copy_dir() instead. 686 */ 687 if ( $args['clear_working'] 688 && ( 689 // Destination does not exist or has no contents. 690 ! $wp_filesystem->exists( $remote_destination ) 691 || empty( $wp_filesystem->dirlist( $remote_destination ) ) 692 ) 693 ) { 694 $result = move_dir( $source, $remote_destination, true ); 695 } else { 696 // Create destination if needed. 697 if ( ! $wp_filesystem->exists( $remote_destination ) ) { 698 if ( ! $wp_filesystem->mkdir( $remote_destination, FS_CHMOD_DIR ) ) { 699 return new WP_Error( 'mkdir_failed_destination', $this->strings['mkdir_failed'], $remote_destination ); 700 } 701 } 702 $result = copy_dir( $source, $remote_destination ); 703 } 704 705 // Clear the working directory? 706 if ( $args['clear_working'] ) { 707 $wp_filesystem->delete( $remote_source, true ); 708 } 709 710 if ( is_wp_error( $result ) ) { 711 return $result; 712 } 713 714 $destination_name = basename( str_replace( $local_destination, '', $destination ) ); 715 if ( '.' === $destination_name ) { 716 $destination_name = ''; 717 } 718 719 $this->result = compact( 'source', 'source_files', 'destination', 'destination_name', 'local_destination', 'remote_destination', 'clear_destination' ); 720 721 /** 722 * Filters the installation response after the installation has finished. 723 * 724 * @since 2.8.0 725 * 726 * @param bool $response Installation response. 727 * @param array $hook_extra Extra arguments passed to hooked filters. 728 * @param array $result Installation result data. 729 */ 730 $res = apply_filters( 'upgrader_post_install', true, $args['hook_extra'], $this->result ); 731 732 if ( is_wp_error( $res ) ) { 733 $this->result = $res; 734 return $res; 735 } 736 737 // Bombard the calling function will all the info which we've just used. 738 return $this->result; 739 } 740 741 /** 742 * Runs an upgrade/installation. 743 * 744 * Attempts to download the package (if it is not a local file), unpack it, and 745 * install it in the destination folder. 746 * 747 * @since 2.8.0 748 * 749 * @param array $options { 750 * Array or string of arguments for upgrading/installing a package. 751 * 752 * @type string $package The full path or URI of the package to install. 753 * Default empty. 754 * @type string $destination The full path to the destination folder. 755 * Default empty. 756 * @type bool $clear_destination Whether to delete any files already in the 757 * destination folder. Default false. 758 * @type bool $clear_working Whether to delete the files from the working 759 * directory after copying them to the destination. 760 * Default true. 761 * @type bool $abort_if_destination_exists Whether to abort the installation if the destination 762 * folder already exists. When true, `$clear_destination` 763 * should be false. Default true. 764 * @type bool $is_multi Whether this run is one of multiple upgrade/installation 765 * actions being performed in bulk. When true, the skin 766 * WP_Upgrader::header() and WP_Upgrader::footer() 767 * aren't called. Default false. 768 * @type array $hook_extra Extra arguments to pass to the filter hooks called by 769 * WP_Upgrader::run(). 770 * } 771 * @return array|false|WP_Error The result from self::install_package() on success, otherwise a WP_Error, 772 * or false if unable to connect to the filesystem. 773 */ 774 public function run( $options ) { 775 776 $defaults = array( 777 'package' => '', // Please always pass this. 778 'destination' => '', // ...and this. 779 'clear_destination' => false, 780 'clear_working' => true, 781 'abort_if_destination_exists' => true, // Abort if the destination directory exists. Pass clear_destination as false please. 782 'is_multi' => false, 783 'hook_extra' => array(), // Pass any extra $hook_extra args here, this will be passed to any hooked filters. 784 ); 785 786 $options = wp_parse_args( $options, $defaults ); 787 788 /** 789 * Filters the package options before running an update. 790 * 791 * See also {@see 'upgrader_process_complete'}. 792 * 793 * @since 4.3.0 794 * 795 * @param array $options { 796 * Options used by the upgrader. 797 * 798 * @type string $package Package for update. 799 * @type string $destination Update location. 800 * @type bool $clear_destination Clear the destination resource. 801 * @type bool $clear_working Clear the working resource. 802 * @type bool $abort_if_destination_exists Abort if the Destination directory exists. 803 * @type bool $is_multi Whether the upgrader is running multiple times. 804 * @type array $hook_extra { 805 * Extra hook arguments. 806 * 807 * @type string $action Type of action. Default 'update'. 808 * @type string $type Type of update process. Accepts 'plugin', 'theme', or 'core'. 809 * @type bool $bulk Whether the update process is a bulk update. Default true. 810 * @type string $plugin Path to the plugin file relative to the plugins directory. 811 * @type string $theme The stylesheet or template name of the theme. 812 * @type string $language_update_type The language pack update type. Accepts 'plugin', 'theme', 813 * or 'core'. 814 * @type object $language_update The language pack update offer. 815 * } 816 * } 817 */ 818 $options = apply_filters( 'upgrader_package_options', $options ); 819 820 if ( ! $options['is_multi'] ) { // Call $this->header separately if running multiple times. 821 $this->skin->header(); 822 } 823 824 // Connect to the filesystem first. 825 $res = $this->fs_connect( array( WP_CONTENT_DIR, $options['destination'] ) ); 826 // Mainly for non-connected filesystem. 827 if ( ! $res ) { 828 if ( ! $options['is_multi'] ) { 829 $this->skin->footer(); 830 } 831 return false; 832 } 833 834 $this->skin->before(); 835 836 if ( is_wp_error( $res ) ) { 837 $this->skin->error( $res ); 838 $this->skin->after(); 839 if ( ! $options['is_multi'] ) { 840 $this->skin->footer(); 841 } 842 return $res; 843 } 844 845 /* 846 * Download the package. Note: If the package is the full path 847 * to an existing local file, it will be returned untouched. 848 */ 849 $download = $this->download_package( $options['package'], false, $options['hook_extra'] ); 850 851 /* 852 * Allow for signature soft-fail. 853 * WARNING: This may be removed in the future. 854 */ 855 if ( is_wp_error( $download ) && $download->get_error_data( 'softfail-filename' ) ) { 856 857 // Don't output the 'no signature could be found' failure message for now. 858 if ( 'signature_verification_no_signature' !== $download->get_error_code() || WP_DEBUG ) { 859 // Output the failure error as a normal feedback, and not as an error. 860 $this->skin->feedback( $download->get_error_message() ); 861 862 // Report this failure back to WordPress.org for debugging purposes. 863 wp_version_check( 864 array( 865 'signature_failure_code' => $download->get_error_code(), 866 'signature_failure_data' => $download->get_error_data(), 867 ) 868 ); 869 } 870 871 // Pretend this error didn't happen. 872 $download = $download->get_error_data( 'softfail-filename' ); 873 } 874 875 if ( is_wp_error( $download ) ) { 876 $this->skin->error( $download ); 877 $this->skin->after(); 878 if ( ! $options['is_multi'] ) { 879 $this->skin->footer(); 880 } 881 return $download; 882 } 883 884 $delete_package = ( $download !== $options['package'] ); // Do not delete a "local" file. 885 886 // Unzips the file into a temporary directory. 887 $working_dir = $this->unpack_package( $download, $delete_package ); 888 if ( is_wp_error( $working_dir ) ) { 889 $this->skin->error( $working_dir ); 890 $this->skin->after(); 891 if ( ! $options['is_multi'] ) { 892 $this->skin->footer(); 893 } 894 return $working_dir; 895 } 896 897 // With the given options, this installs it to the destination directory. 898 $result = $this->install_package( 899 array( 900 'source' => $working_dir, 901 'destination' => $options['destination'], 902 'clear_destination' => $options['clear_destination'], 903 'abort_if_destination_exists' => $options['abort_if_destination_exists'], 904 'clear_working' => $options['clear_working'], 905 'hook_extra' => $options['hook_extra'], 906 ) 907 ); 908 909 /** 910 * Filters the result of WP_Upgrader::install_package(). 911 * 912 * @since 5.7.0 913 * 914 * @param array|WP_Error $result Result from WP_Upgrader::install_package(). 915 * @param array $hook_extra Extra arguments passed to hooked filters. 916 */ 917 $result = apply_filters( 'upgrader_install_package_result', $result, $options['hook_extra'] ); 918 919 $this->skin->set_result( $result ); 920 921 if ( is_wp_error( $result ) ) { 922 // An automatic plugin update will have already performed its rollback. 923 if ( ! empty( $options['hook_extra']['temp_backup'] ) ) { 924 $this->temp_restores[] = $options['hook_extra']['temp_backup']; 925 926 /* 927 * Restore the backup on shutdown. 928 * Actions running on `shutdown` are immune to PHP timeouts, 929 * so in case the failure was due to a PHP timeout, 930 * it will still be able to properly restore the previous version. 931 * 932 * Zero arguments are accepted as a string can sometimes be passed 933 * internally during actions, causing an error because 934 * `WP_Upgrader::restore_temp_backup()` expects an array. 935 */ 936 add_action( 'shutdown', array( $this, 'restore_temp_backup' ), 10, 0 ); 937 } 938 $this->skin->error( $result ); 939 940 if ( ! method_exists( $this->skin, 'hide_process_failed' ) || ! $this->skin->hide_process_failed( $result ) ) { 941 $this->skin->feedback( 'process_failed' ); 942 } 943 } else { 944 // Installation succeeded. 945 $this->skin->feedback( 'process_success' ); 946 } 947 948 $this->skin->after(); 949 950 // Clean up the backup kept in the temporary backup directory. 951 if ( ! empty( $options['hook_extra']['temp_backup'] ) ) { 952 // Delete the backup on `shutdown` to avoid a PHP timeout. 953 add_action( 'shutdown', array( $this, 'delete_temp_backup' ), 100, 0 ); 954 } 955 956 if ( ! $options['is_multi'] ) { 957 958 /** 959 * Fires when the upgrader process is complete. 960 * 961 * See also {@see 'upgrader_package_options'}. 962 * 963 * @since 3.6.0 964 * @since 3.7.0 Added to WP_Upgrader::run(). 965 * @since 4.6.0 `$translations` was added as a possible argument to `$hook_extra`. 966 * 967 * @param WP_Upgrader $upgrader WP_Upgrader instance. In other contexts this might be a 968 * Theme_Upgrader, Plugin_Upgrader, Core_Upgrade, or Language_Pack_Upgrader instance. 969 * @param array $hook_extra { 970 * Array of bulk item update data. 971 * 972 * @type string $action Type of action. Default 'update'. 973 * @type string $type Type of update process. Accepts 'plugin', 'theme', 'translation', or 'core'. 974 * @type bool $bulk Whether the update process is a bulk update. Default true. 975 * @type array $plugins Array of the basename paths of the plugins' main files. 976 * @type array $themes The theme slugs. 977 * @type array $translations { 978 * Array of translations update data. 979 * 980 * @type string $language The locale the translation is for. 981 * @type string $type Type of translation. Accepts 'plugin', 'theme', or 'core'. 982 * @type string $slug Text domain the translation is for. The slug of a theme/plugin or 983 * 'default' for core translations. 984 * @type string $version The version of a theme, plugin, or core. 985 * } 986 * } 987 */ 988 do_action( 'upgrader_process_complete', $this, $options['hook_extra'] ); 989 990 $this->skin->footer(); 991 } 992 993 return $result; 994 } 995 996 /** 997 * Toggles maintenance mode for the site. 998 * 999 * Creates/deletes the maintenance file to enable/disable maintenance mode. 1000 * 1001 * @since 2.8.0 1002 * 1003 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1004 * 1005 * @param bool $enable True to enable maintenance mode, false to disable. 1006 */ 1007 public function maintenance_mode( $enable = false ) { 1008 global $wp_filesystem; 1009 1010 if ( ! $wp_filesystem ) { 1011 require_once ABSPATH . 'wp-admin/includes/file.php'; 1012 WP_Filesystem(); 1013 } 1014 1015 $file = $wp_filesystem->abspath() . '.maintenance'; 1016 if ( $enable ) { 1017 if ( ! wp_doing_cron() ) { 1018 $this->skin->feedback( 'maintenance_start' ); 1019 } 1020 // Create maintenance file to signal that we are upgrading. 1021 $maintenance_string = '<?php $upgrading = ' . time() . '; ?>'; 1022 $wp_filesystem->delete( $file ); 1023 $wp_filesystem->put_contents( $file, $maintenance_string, FS_CHMOD_FILE ); 1024 } elseif ( ! $enable && $wp_filesystem->exists( $file ) ) { 1025 if ( ! wp_doing_cron() ) { 1026 $this->skin->feedback( 'maintenance_end' ); 1027 } 1028 $wp_filesystem->delete( $file ); 1029 } 1030 } 1031 1032 /** 1033 * Creates a lock using WordPress options. 1034 * 1035 * @since 4.5.0 1036 * 1037 * @global wpdb $wpdb The WordPress database abstraction object. 1038 * 1039 * @param string $lock_name The name of this unique lock. 1040 * @param int $release_timeout Optional. The duration in seconds to respect an existing lock. 1041 * Default: 1 hour. 1042 * @return bool False if a lock couldn't be created or if the lock is still valid. True otherwise. 1043 */ 1044 public static function create_lock( $lock_name, $release_timeout = null ) { 1045 global $wpdb; 1046 if ( ! $release_timeout ) { 1047 $release_timeout = HOUR_IN_SECONDS; 1048 } 1049 $lock_option = $lock_name . '.lock'; 1050 1051 // Try to lock. 1052 $lock_result = $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` ( `option_name`, `option_value`, `autoload` ) VALUES (%s, %s, 'off') /* LOCK */", $lock_option, time() ) ); 1053 1054 if ( ! $lock_result ) { 1055 $lock_result = get_option( $lock_option ); 1056 1057 // If a lock couldn't be created, and there isn't a lock, bail. 1058 if ( ! $lock_result ) { 1059 return false; 1060 } 1061 1062 // Check to see if the lock is still valid. If it is, bail. 1063 if ( $lock_result > ( time() - $release_timeout ) ) { 1064 return false; 1065 } 1066 1067 // There must exist an expired lock, clear it and re-gain it. 1068 WP_Upgrader::release_lock( $lock_name ); 1069 1070 return WP_Upgrader::create_lock( $lock_name, $release_timeout ); 1071 } 1072 1073 // Update the lock, as by this point we've definitely got a lock, just need to fire the actions. 1074 update_option( $lock_option, time(), false ); 1075 1076 return true; 1077 } 1078 1079 /** 1080 * Releases an upgrader lock. 1081 * 1082 * @since 4.5.0 1083 * 1084 * @see WP_Upgrader::create_lock() 1085 * 1086 * @param string $lock_name The name of this unique lock. 1087 * @return bool True if the lock was successfully released. False on failure. 1088 */ 1089 public static function release_lock( $lock_name ) { 1090 return delete_option( $lock_name . '.lock' ); 1091 } 1092 1093 /** 1094 * Moves the plugin or theme being updated into a temporary backup directory. 1095 * 1096 * @since 6.3.0 1097 * 1098 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1099 * 1100 * @param string[] $args { 1101 * Array of data for the temporary backup. 1102 * 1103 * @type string $slug Plugin or theme slug. 1104 * @type string $src Path to the root directory for plugins or themes. 1105 * @type string $dir Destination subdirectory name. Accepts 'plugins' or 'themes'. 1106 * } 1107 * 1108 * @return bool|WP_Error True on success, false on early exit, otherwise WP_Error. 1109 */ 1110 public function move_to_temp_backup_dir( $args ) { 1111 global $wp_filesystem; 1112 1113 if ( empty( $args['slug'] ) || empty( $args['src'] ) || empty( $args['dir'] ) ) { 1114 return false; 1115 } 1116 1117 /* 1118 * Skip any plugin that has "." as its slug. 1119 * A slug of "." will result in a `$src` value ending in a period. 1120 * 1121 * On Windows, this will cause the 'plugins' folder to be moved, 1122 * and will cause a failure when attempting to call `mkdir()`. 1123 */ 1124 if ( '.' === $args['slug'] ) { 1125 return false; 1126 } 1127 1128 if ( ! $wp_filesystem->wp_content_dir() ) { 1129 return new WP_Error( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); 1130 } 1131 1132 $dest_dir = $wp_filesystem->wp_content_dir() . 'upgrade-temp-backup/'; 1133 $sub_dir = $dest_dir . $args['dir'] . '/'; 1134 1135 // Create the temporary backup directory if it does not exist. 1136 if ( ! $wp_filesystem->is_dir( $sub_dir ) ) { 1137 if ( ! $wp_filesystem->is_dir( $dest_dir ) ) { 1138 $wp_filesystem->mkdir( $dest_dir, FS_CHMOD_DIR ); 1139 } 1140 1141 if ( ! $wp_filesystem->mkdir( $sub_dir, FS_CHMOD_DIR ) ) { 1142 // Could not create the backup directory. 1143 return new WP_Error( 'fs_temp_backup_mkdir', $this->strings['temp_backup_mkdir_failed'] ); 1144 } 1145 } 1146 1147 $src_dir = $wp_filesystem->find_folder( $args['src'] ); 1148 $src = trailingslashit( $src_dir ) . $args['slug']; 1149 $dest = $dest_dir . trailingslashit( $args['dir'] ) . $args['slug']; 1150 1151 // Delete the temporary backup directory if it already exists. 1152 if ( $wp_filesystem->is_dir( $dest ) ) { 1153 $wp_filesystem->delete( $dest, true ); 1154 } 1155 1156 // Move to the temporary backup directory. 1157 $result = move_dir( $src, $dest, true ); 1158 if ( is_wp_error( $result ) ) { 1159 return new WP_Error( 'fs_temp_backup_move', $this->strings['temp_backup_move_failed'] ); 1160 } 1161 1162 return true; 1163 } 1164 1165 /** 1166 * Restores the plugin or theme from temporary backup. 1167 * 1168 * @since 6.3.0 1169 * @since 6.6.0 Added the `$temp_backups` parameter. 1170 * 1171 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1172 * 1173 * @param array[] $temp_backups { 1174 * Optional. An array of temporary backups. 1175 * 1176 * @type array ...$0 { 1177 * Information about the backup. 1178 * 1179 * @type string $dir The temporary backup location in the upgrade-temp-backup directory. 1180 * @type string $slug The item's slug. 1181 * @type string $src The directory where the original is stored. For example, `WP_PLUGIN_DIR`. 1182 * } 1183 * } 1184 * @return bool|WP_Error True on success, false on early exit, otherwise WP_Error. 1185 */ 1186 public function restore_temp_backup( array $temp_backups = array() ) { 1187 global $wp_filesystem; 1188 1189 $errors = new WP_Error(); 1190 1191 if ( empty( $temp_backups ) ) { 1192 $temp_backups = $this->temp_restores; 1193 } 1194 1195 foreach ( $temp_backups as $args ) { 1196 if ( empty( $args['slug'] ) || empty( $args['src'] ) || empty( $args['dir'] ) ) { 1197 return false; 1198 } 1199 1200 if ( ! $wp_filesystem->wp_content_dir() ) { 1201 $errors->add( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); 1202 return $errors; 1203 } 1204 1205 $src = $wp_filesystem->wp_content_dir() . 'upgrade-temp-backup/' . $args['dir'] . '/' . $args['slug']; 1206 $dest_dir = $wp_filesystem->find_folder( $args['src'] ); 1207 $dest = trailingslashit( $dest_dir ) . $args['slug']; 1208 1209 if ( $wp_filesystem->is_dir( $src ) ) { 1210 // Cleanup. 1211 if ( $wp_filesystem->is_dir( $dest ) && ! $wp_filesystem->delete( $dest, true ) ) { 1212 $errors->add( 1213 'fs_temp_backup_delete', 1214 sprintf( $this->strings['temp_backup_restore_failed'], $args['slug'] ) 1215 ); 1216 continue; 1217 } 1218 1219 // Move it. 1220 $result = move_dir( $src, $dest, true ); 1221 if ( is_wp_error( $result ) ) { 1222 $errors->add( 1223 'fs_temp_backup_delete', 1224 sprintf( $this->strings['temp_backup_restore_failed'], $args['slug'] ) 1225 ); 1226 continue; 1227 } 1228 } 1229 } 1230 1231 return $errors->has_errors() ? $errors : true; 1232 } 1233 1234 /** 1235 * Deletes a temporary backup. 1236 * 1237 * @since 6.3.0 1238 * @since 6.6.0 Added the `$temp_backups` parameter. 1239 * 1240 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1241 * 1242 * @param array[] $temp_backups { 1243 * Optional. An array of temporary backups. 1244 * 1245 * @type array ...$0 { 1246 * Information about the backup. 1247 * 1248 * @type string $dir The temporary backup location in the upgrade-temp-backup directory. 1249 * @type string $slug The item's slug. 1250 * @type string $src The directory where the original is stored. For example, `WP_PLUGIN_DIR`. 1251 * } 1252 * } 1253 * @return bool|WP_Error True on success, false on early exit, otherwise WP_Error. 1254 */ 1255 public function delete_temp_backup( array $temp_backups = array() ) { 1256 global $wp_filesystem; 1257 1258 $errors = new WP_Error(); 1259 1260 if ( empty( $temp_backups ) ) { 1261 $temp_backups = $this->temp_backups; 1262 } 1263 1264 foreach ( $temp_backups as $args ) { 1265 if ( empty( $args['slug'] ) || empty( $args['dir'] ) ) { 1266 return false; 1267 } 1268 1269 if ( ! $wp_filesystem->wp_content_dir() ) { 1270 $errors->add( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); 1271 return $errors; 1272 } 1273 1274 $temp_backup_dir = $wp_filesystem->wp_content_dir() . "upgrade-temp-backup/{$args['dir']}/{$args['slug']}"; 1275 1276 if ( ! $wp_filesystem->delete( $temp_backup_dir, true ) ) { 1277 $errors->add( 1278 'temp_backup_delete_failed', 1279 sprintf( $this->strings['temp_backup_delete_failed'], $args['slug'] ) 1280 ); 1281 continue; 1282 } 1283 } 1284 1285 return $errors->has_errors() ? $errors : true; 1286 } 1287 } 1288 1289 /** Plugin_Upgrader class */ 1290 require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader.php'; 1291 1292 /** Theme_Upgrader class */ 1293 require_once ABSPATH . 'wp-admin/includes/class-theme-upgrader.php'; 1294 1295 /** Language_Pack_Upgrader class */ 1296 require_once ABSPATH . 'wp-admin/includes/class-language-pack-upgrader.php'; 1297 1298 /** Core_Upgrader class */ 1299 require_once ABSPATH . 'wp-admin/includes/class-core-upgrader.php'; 1300 1301 /** File_Upload_Upgrader class */ 1302 require_once ABSPATH . 'wp-admin/includes/class-file-upload-upgrader.php'; 1303 1304 /** WP_Automatic_Updater class */ 1305 require_once ABSPATH . 'wp-admin/includes/class-wp-automatic-updater.php';
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