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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 // Give the upgrade an additional 300 seconds(5 minutes) to ensure the install doesn't prematurely timeout having used up the maximum script execution time upacking and downloading in WP_Upgrader->run. 529 if ( function_exists( 'set_time_limit' ) ) { 530 set_time_limit( 300 ); 531 } 532 533 if ( 534 ( ! is_string( $source ) || '' === $source || trim( $source ) !== $source ) || 535 ( ! is_string( $destination ) || '' === $destination || trim( $destination ) !== $destination ) 536 ) { 537 return new WP_Error( 'bad_request', $this->strings['bad_request'] ); 538 } 539 $this->skin->feedback( 'installing_package' ); 540 541 /** 542 * Filters the installation response before the installation has started. 543 * 544 * Returning a value that could be evaluated as a `WP_Error` will effectively 545 * short-circuit the installation, returning that value instead. 546 * 547 * @since 2.8.0 548 * 549 * @param bool|WP_Error $response Installation response. 550 * @param array $hook_extra Extra arguments passed to hooked filters. 551 */ 552 $res = apply_filters( 'upgrader_pre_install', true, $args['hook_extra'] ); 553 554 if ( is_wp_error( $res ) ) { 555 return $res; 556 } 557 558 // Retain the original source and destinations. 559 $remote_source = $args['source']; 560 $local_destination = $destination; 561 562 $dirlist = $wp_filesystem->dirlist( $remote_source ); 563 564 if ( false === $dirlist ) { 565 return new WP_Error( 'source_read_failed', $this->strings['fs_error'], $this->strings['dir_not_readable'] ); 566 } 567 568 $source_files = array_keys( $dirlist ); 569 $remote_destination = $wp_filesystem->find_folder( $local_destination ); 570 571 // Locate which directory to copy to the new folder. This is based on the actual folder holding the files. 572 if ( 1 === count( $source_files ) && $wp_filesystem->is_dir( trailingslashit( $args['source'] ) . $source_files[0] . '/' ) ) { 573 // Only one folder? Then we want its contents. 574 $source = trailingslashit( $args['source'] ) . trailingslashit( $source_files[0] ); 575 } elseif ( 0 === count( $source_files ) ) { 576 // There are no files? 577 return new WP_Error( 'incompatible_archive_empty', $this->strings['incompatible_archive'], $this->strings['no_files'] ); 578 } else { 579 /* 580 * It's only a single file, the upgrader will use the folder name of this file as the destination folder. 581 * Folder name is based on zip filename. 582 */ 583 $source = trailingslashit( $args['source'] ); 584 } 585 586 /** 587 * Filters the source file location for the upgrade package. 588 * 589 * @since 2.8.0 590 * @since 4.4.0 The $hook_extra parameter became available. 591 * 592 * @param string $source File source location. 593 * @param string $remote_source Remote file source location. 594 * @param WP_Upgrader $upgrader WP_Upgrader instance. 595 * @param array $hook_extra Extra arguments passed to hooked filters. 596 */ 597 $source = apply_filters( 'upgrader_source_selection', $source, $remote_source, $this, $args['hook_extra'] ); 598 599 if ( is_wp_error( $source ) ) { 600 return $source; 601 } 602 603 if ( ! empty( $args['hook_extra']['temp_backup'] ) ) { 604 $temp_backup = $this->move_to_temp_backup_dir( $args['hook_extra']['temp_backup'] ); 605 606 if ( is_wp_error( $temp_backup ) ) { 607 return $temp_backup; 608 } 609 610 $this->temp_backups[] = $args['hook_extra']['temp_backup']; 611 } 612 613 // Has the source location changed? If so, we need a new source_files list. 614 if ( $source !== $remote_source ) { 615 $dirlist = $wp_filesystem->dirlist( $source ); 616 617 if ( false === $dirlist ) { 618 return new WP_Error( 'new_source_read_failed', $this->strings['fs_error'], $this->strings['dir_not_readable'] ); 619 } 620 621 $source_files = array_keys( $dirlist ); 622 } 623 624 /* 625 * Protection against deleting files in any important base directories. 626 * Theme_Upgrader & Plugin_Upgrader also trigger this, as they pass the 627 * destination directory (WP_PLUGIN_DIR / wp-content/themes) intending 628 * to copy the directory into the directory, whilst they pass the source 629 * as the actual files to copy. 630 */ 631 $protected_directories = array( ABSPATH, WP_CONTENT_DIR, WP_PLUGIN_DIR, WP_CONTENT_DIR . '/themes' ); 632 633 if ( is_array( $wp_theme_directories ) ) { 634 $protected_directories = array_merge( $protected_directories, $wp_theme_directories ); 635 } 636 637 if ( in_array( $destination, $protected_directories, true ) ) { 638 $remote_destination = trailingslashit( $remote_destination ) . trailingslashit( basename( $source ) ); 639 $destination = trailingslashit( $destination ) . trailingslashit( basename( $source ) ); 640 } 641 642 if ( $clear_destination ) { 643 // We're going to clear the destination if there's something there. 644 $this->skin->feedback( 'remove_old' ); 645 646 $removed = $this->clear_destination( $remote_destination ); 647 648 /** 649 * Filters whether the upgrader cleared the destination. 650 * 651 * @since 2.8.0 652 * 653 * @param true|WP_Error $removed Whether the destination was cleared. 654 * True upon success, WP_Error on failure. 655 * @param string $local_destination The local package destination. 656 * @param string $remote_destination The remote package destination. 657 * @param array $hook_extra Extra arguments passed to hooked filters. 658 */ 659 $removed = apply_filters( 'upgrader_clear_destination', $removed, $local_destination, $remote_destination, $args['hook_extra'] ); 660 661 if ( is_wp_error( $removed ) ) { 662 return $removed; 663 } 664 } elseif ( $args['abort_if_destination_exists'] && $wp_filesystem->exists( $remote_destination ) ) { 665 /* 666 * If we're not clearing the destination folder and something exists there already, bail. 667 * But first check to see if there are actually any files in the folder. 668 */ 669 $_files = $wp_filesystem->dirlist( $remote_destination ); 670 if ( ! empty( $_files ) ) { 671 $wp_filesystem->delete( $remote_source, true ); // Clear out the source files. 672 return new WP_Error( 'folder_exists', $this->strings['folder_exists'], $remote_destination ); 673 } 674 } 675 676 /* 677 * If 'clear_working' is false, the source should not be removed, so use copy_dir() instead. 678 * 679 * Partial updates, like language packs, may want to retain the destination. 680 * If the destination exists or has contents, this may be a partial update, 681 * and the destination should not be removed, so use copy_dir() instead. 682 */ 683 if ( $args['clear_working'] 684 && ( 685 // Destination does not exist or has no contents. 686 ! $wp_filesystem->exists( $remote_destination ) 687 || empty( $wp_filesystem->dirlist( $remote_destination ) ) 688 ) 689 ) { 690 $result = move_dir( $source, $remote_destination, true ); 691 } else { 692 // Create destination if needed. 693 if ( ! $wp_filesystem->exists( $remote_destination ) ) { 694 if ( ! $wp_filesystem->mkdir( $remote_destination, FS_CHMOD_DIR ) ) { 695 return new WP_Error( 'mkdir_failed_destination', $this->strings['mkdir_failed'], $remote_destination ); 696 } 697 } 698 $result = copy_dir( $source, $remote_destination ); 699 } 700 701 // Clear the working directory? 702 if ( $args['clear_working'] ) { 703 $wp_filesystem->delete( $remote_source, true ); 704 } 705 706 if ( is_wp_error( $result ) ) { 707 return $result; 708 } 709 710 $destination_name = basename( str_replace( $local_destination, '', $destination ) ); 711 if ( '.' === $destination_name ) { 712 $destination_name = ''; 713 } 714 715 $this->result = compact( 'source', 'source_files', 'destination', 'destination_name', 'local_destination', 'remote_destination', 'clear_destination' ); 716 717 /** 718 * Filters the installation response after the installation has finished. 719 * 720 * @since 2.8.0 721 * 722 * @param bool $response Installation response. 723 * @param array $hook_extra Extra arguments passed to hooked filters. 724 * @param array $result Installation result data. 725 */ 726 $res = apply_filters( 'upgrader_post_install', true, $args['hook_extra'], $this->result ); 727 728 if ( is_wp_error( $res ) ) { 729 $this->result = $res; 730 return $res; 731 } 732 733 // Bombard the calling function will all the info which we've just used. 734 return $this->result; 735 } 736 737 /** 738 * Runs an upgrade/installation. 739 * 740 * Attempts to download the package (if it is not a local file), unpack it, and 741 * install it in the destination folder. 742 * 743 * @since 2.8.0 744 * 745 * @param array $options { 746 * Array or string of arguments for upgrading/installing a package. 747 * 748 * @type string $package The full path or URI of the package to install. 749 * Default empty. 750 * @type string $destination The full path to the destination folder. 751 * Default empty. 752 * @type bool $clear_destination Whether to delete any files already in the 753 * destination folder. Default false. 754 * @type bool $clear_working Whether to delete the files from the working 755 * directory after copying them to the destination. 756 * Default true. 757 * @type bool $abort_if_destination_exists Whether to abort the installation if the destination 758 * folder already exists. When true, `$clear_destination` 759 * should be false. Default true. 760 * @type bool $is_multi Whether this run is one of multiple upgrade/installation 761 * actions being performed in bulk. When true, the skin 762 * WP_Upgrader::header() and WP_Upgrader::footer() 763 * aren't called. Default false. 764 * @type array $hook_extra Extra arguments to pass to the filter hooks called by 765 * WP_Upgrader::run(). 766 * } 767 * @return array|false|WP_Error The result from self::install_package() on success, otherwise a WP_Error, 768 * or false if unable to connect to the filesystem. 769 */ 770 public function run( $options ) { 771 772 $defaults = array( 773 'package' => '', // Please always pass this. 774 'destination' => '', // ...and this. 775 'clear_destination' => false, 776 'clear_working' => true, 777 'abort_if_destination_exists' => true, // Abort if the destination directory exists. Pass clear_destination as false please. 778 'is_multi' => false, 779 'hook_extra' => array(), // Pass any extra $hook_extra args here, this will be passed to any hooked filters. 780 ); 781 782 $options = wp_parse_args( $options, $defaults ); 783 784 /** 785 * Filters the package options before running an update. 786 * 787 * See also {@see 'upgrader_process_complete'}. 788 * 789 * @since 4.3.0 790 * 791 * @param array $options { 792 * Options used by the upgrader. 793 * 794 * @type string $package Package for update. 795 * @type string $destination Update location. 796 * @type bool $clear_destination Clear the destination resource. 797 * @type bool $clear_working Clear the working resource. 798 * @type bool $abort_if_destination_exists Abort if the Destination directory exists. 799 * @type bool $is_multi Whether the upgrader is running multiple times. 800 * @type array $hook_extra { 801 * Extra hook arguments. 802 * 803 * @type string $action Type of action. Default 'update'. 804 * @type string $type Type of update process. Accepts 'plugin', 'theme', or 'core'. 805 * @type bool $bulk Whether the update process is a bulk update. Default true. 806 * @type string $plugin Path to the plugin file relative to the plugins directory. 807 * @type string $theme The stylesheet or template name of the theme. 808 * @type string $language_update_type The language pack update type. Accepts 'plugin', 'theme', 809 * or 'core'. 810 * @type object $language_update The language pack update offer. 811 * } 812 * } 813 */ 814 $options = apply_filters( 'upgrader_package_options', $options ); 815 816 if ( ! $options['is_multi'] ) { // Call $this->header separately if running multiple times. 817 $this->skin->header(); 818 } 819 820 // Connect to the filesystem first. 821 $res = $this->fs_connect( array( WP_CONTENT_DIR, $options['destination'] ) ); 822 // Mainly for non-connected filesystem. 823 if ( ! $res ) { 824 if ( ! $options['is_multi'] ) { 825 $this->skin->footer(); 826 } 827 return false; 828 } 829 830 $this->skin->before(); 831 832 if ( is_wp_error( $res ) ) { 833 $this->skin->error( $res ); 834 $this->skin->after(); 835 if ( ! $options['is_multi'] ) { 836 $this->skin->footer(); 837 } 838 return $res; 839 } 840 841 /* 842 * Download the package. Note: If the package is the full path 843 * to an existing local file, it will be returned untouched. 844 */ 845 $download = $this->download_package( $options['package'], false, $options['hook_extra'] ); 846 847 /* 848 * Allow for signature soft-fail. 849 * WARNING: This may be removed in the future. 850 */ 851 if ( is_wp_error( $download ) && $download->get_error_data( 'softfail-filename' ) ) { 852 853 // Don't output the 'no signature could be found' failure message for now. 854 if ( 'signature_verification_no_signature' !== $download->get_error_code() || WP_DEBUG ) { 855 // Output the failure error as a normal feedback, and not as an error. 856 $this->skin->feedback( $download->get_error_message() ); 857 858 // Report this failure back to WordPress.org for debugging purposes. 859 wp_version_check( 860 array( 861 'signature_failure_code' => $download->get_error_code(), 862 'signature_failure_data' => $download->get_error_data(), 863 ) 864 ); 865 } 866 867 // Pretend this error didn't happen. 868 $download = $download->get_error_data( 'softfail-filename' ); 869 } 870 871 if ( is_wp_error( $download ) ) { 872 $this->skin->error( $download ); 873 $this->skin->after(); 874 if ( ! $options['is_multi'] ) { 875 $this->skin->footer(); 876 } 877 return $download; 878 } 879 880 $delete_package = ( $download !== $options['package'] ); // Do not delete a "local" file. 881 882 // Unzips the file into a temporary directory. 883 $working_dir = $this->unpack_package( $download, $delete_package ); 884 if ( is_wp_error( $working_dir ) ) { 885 $this->skin->error( $working_dir ); 886 $this->skin->after(); 887 if ( ! $options['is_multi'] ) { 888 $this->skin->footer(); 889 } 890 return $working_dir; 891 } 892 893 // With the given options, this installs it to the destination directory. 894 $result = $this->install_package( 895 array( 896 'source' => $working_dir, 897 'destination' => $options['destination'], 898 'clear_destination' => $options['clear_destination'], 899 'abort_if_destination_exists' => $options['abort_if_destination_exists'], 900 'clear_working' => $options['clear_working'], 901 'hook_extra' => $options['hook_extra'], 902 ) 903 ); 904 905 /** 906 * Filters the result of WP_Upgrader::install_package(). 907 * 908 * @since 5.7.0 909 * 910 * @param array|WP_Error $result Result from WP_Upgrader::install_package(). 911 * @param array $hook_extra Extra arguments passed to hooked filters. 912 */ 913 $result = apply_filters( 'upgrader_install_package_result', $result, $options['hook_extra'] ); 914 915 $this->skin->set_result( $result ); 916 917 if ( is_wp_error( $result ) ) { 918 // An automatic plugin update will have already performed its rollback. 919 if ( ! empty( $options['hook_extra']['temp_backup'] ) ) { 920 $this->temp_restores[] = $options['hook_extra']['temp_backup']; 921 922 /* 923 * Restore the backup on shutdown. 924 * Actions running on `shutdown` are immune to PHP timeouts, 925 * so in case the failure was due to a PHP timeout, 926 * it will still be able to properly restore the previous version. 927 * 928 * Zero arguments are accepted as a string can sometimes be passed 929 * internally during actions, causing an error because 930 * `WP_Upgrader::restore_temp_backup()` expects an array. 931 */ 932 add_action( 'shutdown', array( $this, 'restore_temp_backup' ), 10, 0 ); 933 } 934 $this->skin->error( $result ); 935 936 if ( ! method_exists( $this->skin, 'hide_process_failed' ) || ! $this->skin->hide_process_failed( $result ) ) { 937 $this->skin->feedback( 'process_failed' ); 938 } 939 } else { 940 // Installation succeeded. 941 $this->skin->feedback( 'process_success' ); 942 } 943 944 $this->skin->after(); 945 946 // Clean up the backup kept in the temporary backup directory. 947 if ( ! empty( $options['hook_extra']['temp_backup'] ) ) { 948 // Delete the backup on `shutdown` to avoid a PHP timeout. 949 add_action( 'shutdown', array( $this, 'delete_temp_backup' ), 100, 0 ); 950 } 951 952 if ( ! $options['is_multi'] ) { 953 954 /** 955 * Fires when the upgrader process is complete. 956 * 957 * See also {@see 'upgrader_package_options'}. 958 * 959 * @since 3.6.0 960 * @since 3.7.0 Added to WP_Upgrader::run(). 961 * @since 4.6.0 `$translations` was added as a possible argument to `$hook_extra`. 962 * 963 * @param WP_Upgrader $upgrader WP_Upgrader instance. In other contexts this might be a 964 * Theme_Upgrader, Plugin_Upgrader, Core_Upgrade, or Language_Pack_Upgrader instance. 965 * @param array $hook_extra { 966 * Array of bulk item update data. 967 * 968 * @type string $action Type of action. Default 'update'. 969 * @type string $type Type of update process. Accepts 'plugin', 'theme', 'translation', or 'core'. 970 * @type bool $bulk Whether the update process is a bulk update. Default true. 971 * @type array $plugins Array of the basename paths of the plugins' main files. 972 * @type array $themes The theme slugs. 973 * @type array $translations { 974 * Array of translations update data. 975 * 976 * @type string $language The locale the translation is for. 977 * @type string $type Type of translation. Accepts 'plugin', 'theme', or 'core'. 978 * @type string $slug Text domain the translation is for. The slug of a theme/plugin or 979 * 'default' for core translations. 980 * @type string $version The version of a theme, plugin, or core. 981 * } 982 * } 983 */ 984 do_action( 'upgrader_process_complete', $this, $options['hook_extra'] ); 985 986 $this->skin->footer(); 987 } 988 989 return $result; 990 } 991 992 /** 993 * Toggles maintenance mode for the site. 994 * 995 * Creates/deletes the maintenance file to enable/disable maintenance mode. 996 * 997 * @since 2.8.0 998 * 999 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1000 * 1001 * @param bool $enable True to enable maintenance mode, false to disable. 1002 */ 1003 public function maintenance_mode( $enable = false ) { 1004 global $wp_filesystem; 1005 1006 if ( ! $wp_filesystem ) { 1007 require_once ABSPATH . 'wp-admin/includes/file.php'; 1008 WP_Filesystem(); 1009 } 1010 1011 $file = $wp_filesystem->abspath() . '.maintenance'; 1012 if ( $enable ) { 1013 if ( ! wp_doing_cron() ) { 1014 $this->skin->feedback( 'maintenance_start' ); 1015 } 1016 // Create maintenance file to signal that we are upgrading. 1017 $maintenance_string = '<?php $upgrading = ' . time() . '; ?>'; 1018 $wp_filesystem->delete( $file ); 1019 $wp_filesystem->put_contents( $file, $maintenance_string, FS_CHMOD_FILE ); 1020 } elseif ( ! $enable && $wp_filesystem->exists( $file ) ) { 1021 if ( ! wp_doing_cron() ) { 1022 $this->skin->feedback( 'maintenance_end' ); 1023 } 1024 $wp_filesystem->delete( $file ); 1025 } 1026 } 1027 1028 /** 1029 * Creates a lock using WordPress options. 1030 * 1031 * @since 4.5.0 1032 * 1033 * @global wpdb $wpdb The WordPress database abstraction object. 1034 * 1035 * @param string $lock_name The name of this unique lock. 1036 * @param int $release_timeout Optional. The duration in seconds to respect an existing lock. 1037 * Default: 1 hour. 1038 * @return bool False if a lock couldn't be created or if the lock is still valid. True otherwise. 1039 */ 1040 public static function create_lock( $lock_name, $release_timeout = null ) { 1041 global $wpdb; 1042 if ( ! $release_timeout ) { 1043 $release_timeout = HOUR_IN_SECONDS; 1044 } 1045 $lock_option = $lock_name . '.lock'; 1046 1047 // Try to lock. 1048 $lock_result = $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` ( `option_name`, `option_value`, `autoload` ) VALUES (%s, %s, 'off') /* LOCK */", $lock_option, time() ) ); 1049 1050 if ( ! $lock_result ) { 1051 $lock_result = get_option( $lock_option ); 1052 1053 // If a lock couldn't be created, and there isn't a lock, bail. 1054 if ( ! $lock_result ) { 1055 return false; 1056 } 1057 1058 // Check to see if the lock is still valid. If it is, bail. 1059 if ( $lock_result > ( time() - $release_timeout ) ) { 1060 return false; 1061 } 1062 1063 // There must exist an expired lock, clear it and re-gain it. 1064 WP_Upgrader::release_lock( $lock_name ); 1065 1066 return WP_Upgrader::create_lock( $lock_name, $release_timeout ); 1067 } 1068 1069 // Update the lock, as by this point we've definitely got a lock, just need to fire the actions. 1070 update_option( $lock_option, time(), false ); 1071 1072 return true; 1073 } 1074 1075 /** 1076 * Releases an upgrader lock. 1077 * 1078 * @since 4.5.0 1079 * 1080 * @see WP_Upgrader::create_lock() 1081 * 1082 * @param string $lock_name The name of this unique lock. 1083 * @return bool True if the lock was successfully released. False on failure. 1084 */ 1085 public static function release_lock( $lock_name ) { 1086 return delete_option( $lock_name . '.lock' ); 1087 } 1088 1089 /** 1090 * Moves the plugin or theme being updated into a temporary backup directory. 1091 * 1092 * @since 6.3.0 1093 * 1094 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1095 * 1096 * @param string[] $args { 1097 * Array of data for the temporary backup. 1098 * 1099 * @type string $slug Plugin or theme slug. 1100 * @type string $src Path to the root directory for plugins or themes. 1101 * @type string $dir Destination subdirectory name. Accepts 'plugins' or 'themes'. 1102 * } 1103 * 1104 * @return bool|WP_Error True on success, false on early exit, otherwise WP_Error. 1105 */ 1106 public function move_to_temp_backup_dir( $args ) { 1107 global $wp_filesystem; 1108 1109 if ( empty( $args['slug'] ) || empty( $args['src'] ) || empty( $args['dir'] ) ) { 1110 return false; 1111 } 1112 1113 /* 1114 * Skip any plugin that has "." as its slug. 1115 * A slug of "." will result in a `$src` value ending in a period. 1116 * 1117 * On Windows, this will cause the 'plugins' folder to be moved, 1118 * and will cause a failure when attempting to call `mkdir()`. 1119 */ 1120 if ( '.' === $args['slug'] ) { 1121 return false; 1122 } 1123 1124 if ( ! $wp_filesystem->wp_content_dir() ) { 1125 return new WP_Error( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); 1126 } 1127 1128 $dest_dir = $wp_filesystem->wp_content_dir() . 'upgrade-temp-backup/'; 1129 $sub_dir = $dest_dir . $args['dir'] . '/'; 1130 1131 // Create the temporary backup directory if it does not exist. 1132 if ( ! $wp_filesystem->is_dir( $sub_dir ) ) { 1133 if ( ! $wp_filesystem->is_dir( $dest_dir ) ) { 1134 $wp_filesystem->mkdir( $dest_dir, FS_CHMOD_DIR ); 1135 } 1136 1137 if ( ! $wp_filesystem->mkdir( $sub_dir, FS_CHMOD_DIR ) ) { 1138 // Could not create the backup directory. 1139 return new WP_Error( 'fs_temp_backup_mkdir', $this->strings['temp_backup_mkdir_failed'] ); 1140 } 1141 } 1142 1143 $src_dir = $wp_filesystem->find_folder( $args['src'] ); 1144 $src = trailingslashit( $src_dir ) . $args['slug']; 1145 $dest = $dest_dir . trailingslashit( $args['dir'] ) . $args['slug']; 1146 1147 // Delete the temporary backup directory if it already exists. 1148 if ( $wp_filesystem->is_dir( $dest ) ) { 1149 $wp_filesystem->delete( $dest, true ); 1150 } 1151 1152 // Move to the temporary backup directory. 1153 $result = move_dir( $src, $dest, true ); 1154 if ( is_wp_error( $result ) ) { 1155 return new WP_Error( 'fs_temp_backup_move', $this->strings['temp_backup_move_failed'] ); 1156 } 1157 1158 return true; 1159 } 1160 1161 /** 1162 * Restores the plugin or theme from temporary backup. 1163 * 1164 * @since 6.3.0 1165 * @since 6.6.0 Added the `$temp_backups` parameter. 1166 * 1167 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1168 * 1169 * @param array[] $temp_backups { 1170 * Optional. An array of temporary backups. 1171 * 1172 * @type array ...$0 { 1173 * Information about the backup. 1174 * 1175 * @type string $dir The temporary backup location in the upgrade-temp-backup directory. 1176 * @type string $slug The item's slug. 1177 * @type string $src The directory where the original is stored. For example, `WP_PLUGIN_DIR`. 1178 * } 1179 * } 1180 * @return bool|WP_Error True on success, false on early exit, otherwise WP_Error. 1181 */ 1182 public function restore_temp_backup( array $temp_backups = array() ) { 1183 global $wp_filesystem; 1184 1185 $errors = new WP_Error(); 1186 1187 if ( empty( $temp_backups ) ) { 1188 $temp_backups = $this->temp_restores; 1189 } 1190 1191 foreach ( $temp_backups as $args ) { 1192 if ( empty( $args['slug'] ) || empty( $args['src'] ) || empty( $args['dir'] ) ) { 1193 return false; 1194 } 1195 1196 if ( ! $wp_filesystem->wp_content_dir() ) { 1197 $errors->add( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); 1198 return $errors; 1199 } 1200 1201 $src = $wp_filesystem->wp_content_dir() . 'upgrade-temp-backup/' . $args['dir'] . '/' . $args['slug']; 1202 $dest_dir = $wp_filesystem->find_folder( $args['src'] ); 1203 $dest = trailingslashit( $dest_dir ) . $args['slug']; 1204 1205 if ( $wp_filesystem->is_dir( $src ) ) { 1206 // Cleanup. 1207 if ( $wp_filesystem->is_dir( $dest ) && ! $wp_filesystem->delete( $dest, true ) ) { 1208 $errors->add( 1209 'fs_temp_backup_delete', 1210 sprintf( $this->strings['temp_backup_restore_failed'], $args['slug'] ) 1211 ); 1212 continue; 1213 } 1214 1215 // Move it. 1216 $result = move_dir( $src, $dest, true ); 1217 if ( is_wp_error( $result ) ) { 1218 $errors->add( 1219 'fs_temp_backup_delete', 1220 sprintf( $this->strings['temp_backup_restore_failed'], $args['slug'] ) 1221 ); 1222 continue; 1223 } 1224 } 1225 } 1226 1227 return $errors->has_errors() ? $errors : true; 1228 } 1229 1230 /** 1231 * Deletes a temporary backup. 1232 * 1233 * @since 6.3.0 1234 * @since 6.6.0 Added the `$temp_backups` parameter. 1235 * 1236 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1237 * 1238 * @param array[] $temp_backups { 1239 * Optional. An array of temporary backups. 1240 * 1241 * @type array ...$0 { 1242 * Information about the backup. 1243 * 1244 * @type string $dir The temporary backup location in the upgrade-temp-backup directory. 1245 * @type string $slug The item's slug. 1246 * @type string $src The directory where the original is stored. For example, `WP_PLUGIN_DIR`. 1247 * } 1248 * } 1249 * @return bool|WP_Error True on success, false on early exit, otherwise WP_Error. 1250 */ 1251 public function delete_temp_backup( array $temp_backups = array() ) { 1252 global $wp_filesystem; 1253 1254 $errors = new WP_Error(); 1255 1256 if ( empty( $temp_backups ) ) { 1257 $temp_backups = $this->temp_backups; 1258 } 1259 1260 foreach ( $temp_backups as $args ) { 1261 if ( empty( $args['slug'] ) || empty( $args['dir'] ) ) { 1262 return false; 1263 } 1264 1265 if ( ! $wp_filesystem->wp_content_dir() ) { 1266 $errors->add( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); 1267 return $errors; 1268 } 1269 1270 $temp_backup_dir = $wp_filesystem->wp_content_dir() . "upgrade-temp-backup/{$args['dir']}/{$args['slug']}"; 1271 1272 if ( ! $wp_filesystem->delete( $temp_backup_dir, true ) ) { 1273 $errors->add( 1274 'temp_backup_delete_failed', 1275 sprintf( $this->strings['temp_backup_delete_failed'], $args['slug'] ) 1276 ); 1277 continue; 1278 } 1279 } 1280 1281 return $errors->has_errors() ? $errors : true; 1282 } 1283 } 1284 1285 /** Plugin_Upgrader class */ 1286 require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader.php'; 1287 1288 /** Theme_Upgrader class */ 1289 require_once ABSPATH . 'wp-admin/includes/class-theme-upgrader.php'; 1290 1291 /** Language_Pack_Upgrader class */ 1292 require_once ABSPATH . 'wp-admin/includes/class-language-pack-upgrader.php'; 1293 1294 /** Core_Upgrader class */ 1295 require_once ABSPATH . 'wp-admin/includes/class-core-upgrader.php'; 1296 1297 /** File_Upload_Upgrader class */ 1298 require_once ABSPATH . 'wp-admin/includes/class-file-upload-upgrader.php'; 1299 1300 /** WP_Automatic_Updater class */ 1301 require_once ABSPATH . 'wp-admin/includes/class-wp-automatic-updater.php';
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