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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 class WP_Upgrader { 52 53 /** 54 * The error/notification strings used to update the user on the progress. 55 * 56 * @since 2.8.0 57 * @var array $strings 58 */ 59 public $strings = array(); 60 61 /** 62 * The upgrader skin being used. 63 * 64 * @since 2.8.0 65 * @var Automatic_Upgrader_Skin|WP_Upgrader_Skin $skin 66 */ 67 public $skin = null; 68 69 /** 70 * The result of the installation. 71 * 72 * This is set by WP_Upgrader::install_package(), only when the package is installed 73 * successfully. It will then be an array, unless a WP_Error is returned by the 74 * {@see 'upgrader_post_install'} filter. In that case, the WP_Error will be assigned to 75 * it. 76 * 77 * @since 2.8.0 78 * 79 * @var array|WP_Error $result { 80 * @type string $source The full path to the source the files were installed from. 81 * @type string $source_files List of all the files in the source directory. 82 * @type string $destination The full path to the installation destination folder. 83 * @type string $destination_name The name of the destination folder, or empty if `$destination` 84 * and `$local_destination` are the same. 85 * @type string $local_destination The full local path to the destination folder. This is usually 86 * the same as `$destination`. 87 * @type string $remote_destination The full remote path to the destination folder 88 * (i.e., from `$wp_filesystem`). 89 * @type bool $clear_destination Whether the destination folder was cleared. 90 * } 91 */ 92 public $result = array(); 93 94 /** 95 * The total number of updates being performed. 96 * 97 * Set by the bulk update methods. 98 * 99 * @since 3.0.0 100 * @var int $update_count 101 */ 102 public $update_count = 0; 103 104 /** 105 * The current update if multiple updates are being performed. 106 * 107 * Used by the bulk update methods, and incremented for each update. 108 * 109 * @since 3.0.0 110 * @var int 111 */ 112 public $update_current = 0; 113 114 /** 115 * Construct the upgrader with a skin. 116 * 117 * @since 2.8.0 118 * 119 * @param WP_Upgrader_Skin $skin The upgrader skin to use. Default is a WP_Upgrader_Skin 120 * instance. 121 */ 122 public function __construct( $skin = null ) { 123 if ( null === $skin ) { 124 $this->skin = new WP_Upgrader_Skin(); 125 } else { 126 $this->skin = $skin; 127 } 128 } 129 130 /** 131 * Initialize the upgrader. 132 * 133 * This will set the relationship between the skin being used and this upgrader, 134 * and also add the generic strings to `WP_Upgrader::$strings`. 135 * 136 * @since 2.8.0 137 */ 138 public function init() { 139 $this->skin->set_upgrader( $this ); 140 $this->generic_strings(); 141 } 142 143 /** 144 * Add the generic strings to WP_Upgrader::$strings. 145 * 146 * @since 2.8.0 147 */ 148 public function generic_strings() { 149 $this->strings['bad_request'] = __( 'Invalid data provided.' ); 150 $this->strings['fs_unavailable'] = __( 'Could not access filesystem.' ); 151 $this->strings['fs_error'] = __( 'Filesystem error.' ); 152 $this->strings['fs_no_root_dir'] = __( 'Unable to locate WordPress root directory.' ); 153 $this->strings['fs_no_content_dir'] = __( 'Unable to locate WordPress content directory (wp-content).' ); 154 $this->strings['fs_no_plugins_dir'] = __( 'Unable to locate WordPress plugin directory.' ); 155 $this->strings['fs_no_themes_dir'] = __( 'Unable to locate WordPress theme directory.' ); 156 /* translators: %s: Directory name. */ 157 $this->strings['fs_no_folder'] = __( 'Unable to locate needed folder (%s).' ); 158 159 $this->strings['download_failed'] = __( 'Download failed.' ); 160 $this->strings['installing_package'] = __( 'Installing the latest version…' ); 161 $this->strings['no_files'] = __( 'The package contains no files.' ); 162 $this->strings['folder_exists'] = __( 'Destination folder already exists.' ); 163 $this->strings['mkdir_failed'] = __( 'Could not create directory.' ); 164 $this->strings['incompatible_archive'] = __( 'The package could not be installed.' ); 165 $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.' ); 166 167 $this->strings['maintenance_start'] = __( 'Enabling Maintenance mode…' ); 168 $this->strings['maintenance_end'] = __( 'Disabling Maintenance mode…' ); 169 } 170 171 /** 172 * Connect to the filesystem. 173 * 174 * @since 2.8.0 175 * 176 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 177 * 178 * @param string[] $directories Optional. Array of directories. If any of these do 179 * not exist, a WP_Error object will be returned. 180 * Default empty array. 181 * @param bool $allow_relaxed_file_ownership Whether to allow relaxed file ownership. 182 * Default false. 183 * @return bool|WP_Error True if able to connect, false or a WP_Error otherwise. 184 */ 185 public function fs_connect( $directories = array(), $allow_relaxed_file_ownership = false ) { 186 global $wp_filesystem; 187 188 $credentials = $this->skin->request_filesystem_credentials( false, $directories[0], $allow_relaxed_file_ownership ); 189 if ( false === $credentials ) { 190 return false; 191 } 192 193 if ( ! WP_Filesystem( $credentials, $directories[0], $allow_relaxed_file_ownership ) ) { 194 $error = true; 195 if ( is_object( $wp_filesystem ) && $wp_filesystem->errors->has_errors() ) { 196 $error = $wp_filesystem->errors; 197 } 198 // Failed to connect. Error and request again. 199 $this->skin->request_filesystem_credentials( $error, $directories[0], $allow_relaxed_file_ownership ); 200 return false; 201 } 202 203 if ( ! is_object( $wp_filesystem ) ) { 204 return new WP_Error( 'fs_unavailable', $this->strings['fs_unavailable'] ); 205 } 206 207 if ( is_wp_error( $wp_filesystem->errors ) && $wp_filesystem->errors->has_errors() ) { 208 return new WP_Error( 'fs_error', $this->strings['fs_error'], $wp_filesystem->errors ); 209 } 210 211 foreach ( (array) $directories as $dir ) { 212 switch ( $dir ) { 213 case ABSPATH: 214 if ( ! $wp_filesystem->abspath() ) { 215 return new WP_Error( 'fs_no_root_dir', $this->strings['fs_no_root_dir'] ); 216 } 217 break; 218 case WP_CONTENT_DIR: 219 if ( ! $wp_filesystem->wp_content_dir() ) { 220 return new WP_Error( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); 221 } 222 break; 223 case WP_PLUGIN_DIR: 224 if ( ! $wp_filesystem->wp_plugins_dir() ) { 225 return new WP_Error( 'fs_no_plugins_dir', $this->strings['fs_no_plugins_dir'] ); 226 } 227 break; 228 case get_theme_root(): 229 if ( ! $wp_filesystem->wp_themes_dir() ) { 230 return new WP_Error( 'fs_no_themes_dir', $this->strings['fs_no_themes_dir'] ); 231 } 232 break; 233 default: 234 if ( ! $wp_filesystem->find_folder( $dir ) ) { 235 return new WP_Error( 'fs_no_folder', sprintf( $this->strings['fs_no_folder'], esc_html( basename( $dir ) ) ) ); 236 } 237 break; 238 } 239 } 240 return true; 241 } 242 243 /** 244 * Download a package. 245 * 246 * @since 2.8.0 247 * @since 5.2.0 Added the `$check_signatures` parameter. 248 * @since 5.5.0 Added the `$hook_extra` parameter. 249 * 250 * @param string $package The URI of the package. If this is the full path to an 251 * existing local file, it will be returned untouched. 252 * @param bool $check_signatures Whether to validate file signatures. Default false. 253 * @param array $hook_extra Extra arguments to pass to the filter hooks. Default empty array. 254 * @return string|WP_Error The full path to the downloaded package file, or a WP_Error object. 255 */ 256 public function download_package( $package, $check_signatures = false, $hook_extra = array() ) { 257 /** 258 * Filters whether to return the package. 259 * 260 * @since 3.7.0 261 * @since 5.5.0 Added the `$hook_extra` parameter. 262 * 263 * @param bool $reply Whether to bail without returning the package. 264 * Default false. 265 * @param string $package The package file name. 266 * @param WP_Upgrader $upgrader The WP_Upgrader instance. 267 * @param array $hook_extra Extra arguments passed to hooked filters. 268 */ 269 $reply = apply_filters( 'upgrader_pre_download', false, $package, $this, $hook_extra ); 270 if ( false !== $reply ) { 271 return $reply; 272 } 273 274 if ( ! preg_match( '!^(http|https|ftp)://!i', $package ) && file_exists( $package ) ) { // Local file or remote? 275 return $package; // Must be a local file. 276 } 277 278 if ( empty( $package ) ) { 279 return new WP_Error( 'no_package', $this->strings['no_package'] ); 280 } 281 282 $this->skin->feedback( 'downloading_package', $package ); 283 284 $download_file = download_url( $package, 300, $check_signatures ); 285 286 if ( is_wp_error( $download_file ) && ! $download_file->get_error_data( 'softfail-filename' ) ) { 287 return new WP_Error( 'download_failed', $this->strings['download_failed'], $download_file->get_error_message() ); 288 } 289 290 return $download_file; 291 } 292 293 /** 294 * Unpack a compressed package file. 295 * 296 * @since 2.8.0 297 * 298 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 299 * 300 * @param string $package Full path to the package file. 301 * @param bool $delete_package Optional. Whether to delete the package file after attempting 302 * to unpack it. Default true. 303 * @return string|WP_Error The path to the unpacked contents, or a WP_Error on failure. 304 */ 305 public function unpack_package( $package, $delete_package = true ) { 306 global $wp_filesystem; 307 308 $this->skin->feedback( 'unpack_package' ); 309 310 $upgrade_folder = $wp_filesystem->wp_content_dir() . 'upgrade/'; 311 312 // Clean up contents of upgrade directory beforehand. 313 $upgrade_files = $wp_filesystem->dirlist( $upgrade_folder ); 314 if ( ! empty( $upgrade_files ) ) { 315 foreach ( $upgrade_files as $file ) { 316 $wp_filesystem->delete( $upgrade_folder . $file['name'], true ); 317 } 318 } 319 320 // We need a working directory - strip off any .tmp or .zip suffixes. 321 $working_dir = $upgrade_folder . basename( basename( $package, '.tmp' ), '.zip' ); 322 323 // Clean up working directory. 324 if ( $wp_filesystem->is_dir( $working_dir ) ) { 325 $wp_filesystem->delete( $working_dir, true ); 326 } 327 328 // Unzip package to working directory. 329 $result = unzip_file( $package, $working_dir ); 330 331 // Once extracted, delete the package if required. 332 if ( $delete_package ) { 333 unlink( $package ); 334 } 335 336 if ( is_wp_error( $result ) ) { 337 $wp_filesystem->delete( $working_dir, true ); 338 if ( 'incompatible_archive' === $result->get_error_code() ) { 339 return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], $result->get_error_data() ); 340 } 341 return $result; 342 } 343 344 return $working_dir; 345 } 346 347 /** 348 * Flatten the results of WP_Filesystem_Base::dirlist() for iterating over. 349 * 350 * @since 4.9.0 351 * @access protected 352 * 353 * @param array $nested_files Array of files as returned by WP_Filesystem_Base::dirlist(). 354 * @param string $path Relative path to prepend to child nodes. Optional. 355 * @return array A flattened array of the $nested_files specified. 356 */ 357 protected function flatten_dirlist( $nested_files, $path = '' ) { 358 $files = array(); 359 360 foreach ( $nested_files as $name => $details ) { 361 $files[ $path . $name ] = $details; 362 363 // Append children recursively. 364 if ( ! empty( $details['files'] ) ) { 365 $children = $this->flatten_dirlist( $details['files'], $path . $name . '/' ); 366 367 // Merge keeping possible numeric keys, which array_merge() will reindex from 0..n. 368 $files = $files + $children; 369 } 370 } 371 372 return $files; 373 } 374 375 /** 376 * Clears the directory where this item is going to be installed into. 377 * 378 * @since 4.3.0 379 * 380 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 381 * 382 * @param string $remote_destination The location on the remote filesystem to be cleared. 383 * @return true|WP_Error True upon success, WP_Error on failure. 384 */ 385 public function clear_destination( $remote_destination ) { 386 global $wp_filesystem; 387 388 $files = $wp_filesystem->dirlist( $remote_destination, true, true ); 389 390 // False indicates that the $remote_destination doesn't exist. 391 if ( false === $files ) { 392 return true; 393 } 394 395 // Flatten the file list to iterate over. 396 $files = $this->flatten_dirlist( $files ); 397 398 // Check all files are writable before attempting to clear the destination. 399 $unwritable_files = array(); 400 401 // Check writability. 402 foreach ( $files as $filename => $file_details ) { 403 if ( ! $wp_filesystem->is_writable( $remote_destination . $filename ) ) { 404 // Attempt to alter permissions to allow writes and try again. 405 $wp_filesystem->chmod( $remote_destination . $filename, ( 'd' === $file_details['type'] ? FS_CHMOD_DIR : FS_CHMOD_FILE ) ); 406 if ( ! $wp_filesystem->is_writable( $remote_destination . $filename ) ) { 407 $unwritable_files[] = $filename; 408 } 409 } 410 } 411 412 if ( ! empty( $unwritable_files ) ) { 413 return new WP_Error( 'files_not_writable', $this->strings['files_not_writable'], implode( ', ', $unwritable_files ) ); 414 } 415 416 if ( ! $wp_filesystem->delete( $remote_destination, true ) ) { 417 return new WP_Error( 'remove_old_failed', $this->strings['remove_old_failed'] ); 418 } 419 420 return true; 421 } 422 423 /** 424 * Install a package. 425 * 426 * Copies the contents of a package from a source directory, and installs them in 427 * a destination directory. Optionally removes the source. It can also optionally 428 * clear out the destination folder if it already exists. 429 * 430 * @since 2.8.0 431 * 432 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 433 * @global array $wp_theme_directories 434 * 435 * @param array|string $args { 436 * Optional. Array or string of arguments for installing a package. Default empty array. 437 * 438 * @type string $source Required path to the package source. Default empty. 439 * @type string $destination Required path to a folder to install the package in. 440 * Default empty. 441 * @type bool $clear_destination Whether to delete any files already in the destination 442 * folder. Default false. 443 * @type bool $clear_working Whether to delete the files from the working directory 444 * after copying them to the destination. Default false. 445 * @type bool $abort_if_destination_exists Whether to abort the installation if 446 * the destination folder already exists. Default true. 447 * @type array $hook_extra Extra arguments to pass to the filter hooks called by 448 * WP_Upgrader::install_package(). Default empty array. 449 * } 450 * 451 * @return array|WP_Error The result (also stored in `WP_Upgrader::$result`), or a WP_Error on failure. 452 */ 453 public function install_package( $args = array() ) { 454 global $wp_filesystem, $wp_theme_directories; 455 456 $defaults = array( 457 'source' => '', // Please always pass this. 458 'destination' => '', // ...and this. 459 'clear_destination' => false, 460 'clear_working' => false, 461 'abort_if_destination_exists' => true, 462 'hook_extra' => array(), 463 ); 464 465 $args = wp_parse_args( $args, $defaults ); 466 467 // These were previously extract()'d. 468 $source = $args['source']; 469 $destination = $args['destination']; 470 $clear_destination = $args['clear_destination']; 471 472 set_time_limit( 300 ); 473 474 if ( empty( $source ) || empty( $destination ) ) { 475 return new WP_Error( 'bad_request', $this->strings['bad_request'] ); 476 } 477 $this->skin->feedback( 'installing_package' ); 478 479 /** 480 * Filters the installation response before the installation has started. 481 * 482 * Returning a value that could be evaluated as a `WP_Error` will effectively 483 * short-circuit the installation, returning that value instead. 484 * 485 * @since 2.8.0 486 * 487 * @param bool|WP_Error $response Installation response. 488 * @param array $hook_extra Extra arguments passed to hooked filters. 489 */ 490 $res = apply_filters( 'upgrader_pre_install', true, $args['hook_extra'] ); 491 492 if ( is_wp_error( $res ) ) { 493 return $res; 494 } 495 496 // Retain the original source and destinations. 497 $remote_source = $args['source']; 498 $local_destination = $destination; 499 500 $source_files = array_keys( $wp_filesystem->dirlist( $remote_source ) ); 501 $remote_destination = $wp_filesystem->find_folder( $local_destination ); 502 503 // Locate which directory to copy to the new folder. This is based on the actual folder holding the files. 504 if ( 1 === count( $source_files ) && $wp_filesystem->is_dir( trailingslashit( $args['source'] ) . $source_files[0] . '/' ) ) { 505 // Only one folder? Then we want its contents. 506 $source = trailingslashit( $args['source'] ) . trailingslashit( $source_files[0] ); 507 } elseif ( 0 === count( $source_files ) ) { 508 // There are no files? 509 return new WP_Error( 'incompatible_archive_empty', $this->strings['incompatible_archive'], $this->strings['no_files'] ); 510 } else { 511 // It's only a single file, the upgrader will use the folder name of this file as the destination folder. 512 // Folder name is based on zip filename. 513 $source = trailingslashit( $args['source'] ); 514 } 515 516 /** 517 * Filters the source file location for the upgrade package. 518 * 519 * @since 2.8.0 520 * @since 4.4.0 The $hook_extra parameter became available. 521 * 522 * @param string $source File source location. 523 * @param string $remote_source Remote file source location. 524 * @param WP_Upgrader $upgrader WP_Upgrader instance. 525 * @param array $hook_extra Extra arguments passed to hooked filters. 526 */ 527 $source = apply_filters( 'upgrader_source_selection', $source, $remote_source, $this, $args['hook_extra'] ); 528 529 if ( is_wp_error( $source ) ) { 530 return $source; 531 } 532 533 // Has the source location changed? If so, we need a new source_files list. 534 if ( $source !== $remote_source ) { 535 $source_files = array_keys( $wp_filesystem->dirlist( $source ) ); 536 } 537 538 /* 539 * Protection against deleting files in any important base directories. 540 * Theme_Upgrader & Plugin_Upgrader also trigger this, as they pass the 541 * destination directory (WP_PLUGIN_DIR / wp-content/themes) intending 542 * to copy the directory into the directory, whilst they pass the source 543 * as the actual files to copy. 544 */ 545 $protected_directories = array( ABSPATH, WP_CONTENT_DIR, WP_PLUGIN_DIR, WP_CONTENT_DIR . '/themes' ); 546 547 if ( is_array( $wp_theme_directories ) ) { 548 $protected_directories = array_merge( $protected_directories, $wp_theme_directories ); 549 } 550 551 if ( in_array( $destination, $protected_directories, true ) ) { 552 $remote_destination = trailingslashit( $remote_destination ) . trailingslashit( basename( $source ) ); 553 $destination = trailingslashit( $destination ) . trailingslashit( basename( $source ) ); 554 } 555 556 if ( $clear_destination ) { 557 // We're going to clear the destination if there's something there. 558 $this->skin->feedback( 'remove_old' ); 559 560 $removed = $this->clear_destination( $remote_destination ); 561 562 /** 563 * Filters whether the upgrader cleared the destination. 564 * 565 * @since 2.8.0 566 * 567 * @param true|WP_Error $removed Whether the destination was cleared. 568 * True upon success, WP_Error on failure. 569 * @param string $local_destination The local package destination. 570 * @param string $remote_destination The remote package destination. 571 * @param array $hook_extra Extra arguments passed to hooked filters. 572 */ 573 $removed = apply_filters( 'upgrader_clear_destination', $removed, $local_destination, $remote_destination, $args['hook_extra'] ); 574 575 if ( is_wp_error( $removed ) ) { 576 return $removed; 577 } 578 } elseif ( $args['abort_if_destination_exists'] && $wp_filesystem->exists( $remote_destination ) ) { 579 // If we're not clearing the destination folder and something exists there already, bail. 580 // But first check to see if there are actually any files in the folder. 581 $_files = $wp_filesystem->dirlist( $remote_destination ); 582 if ( ! empty( $_files ) ) { 583 $wp_filesystem->delete( $remote_source, true ); // Clear out the source files. 584 return new WP_Error( 'folder_exists', $this->strings['folder_exists'], $remote_destination ); 585 } 586 } 587 588 // Create destination if needed. 589 if ( ! $wp_filesystem->exists( $remote_destination ) ) { 590 if ( ! $wp_filesystem->mkdir( $remote_destination, FS_CHMOD_DIR ) ) { 591 return new WP_Error( 'mkdir_failed_destination', $this->strings['mkdir_failed'], $remote_destination ); 592 } 593 } 594 595 // Copy new version of item into place. 596 $result = copy_dir( $source, $remote_destination ); 597 if ( is_wp_error( $result ) ) { 598 if ( $args['clear_working'] ) { 599 $wp_filesystem->delete( $remote_source, true ); 600 } 601 return $result; 602 } 603 604 // Clear the working folder? 605 if ( $args['clear_working'] ) { 606 $wp_filesystem->delete( $remote_source, true ); 607 } 608 609 $destination_name = basename( str_replace( $local_destination, '', $destination ) ); 610 if ( '.' === $destination_name ) { 611 $destination_name = ''; 612 } 613 614 $this->result = compact( 'source', 'source_files', 'destination', 'destination_name', 'local_destination', 'remote_destination', 'clear_destination' ); 615 616 /** 617 * Filters the installation response after the installation has finished. 618 * 619 * @since 2.8.0 620 * 621 * @param bool $response Installation response. 622 * @param array $hook_extra Extra arguments passed to hooked filters. 623 * @param array $result Installation result data. 624 */ 625 $res = apply_filters( 'upgrader_post_install', true, $args['hook_extra'], $this->result ); 626 627 if ( is_wp_error( $res ) ) { 628 $this->result = $res; 629 return $res; 630 } 631 632 // Bombard the calling function will all the info which we've just used. 633 return $this->result; 634 } 635 636 /** 637 * Run an upgrade/installation. 638 * 639 * Attempts to download the package (if it is not a local file), unpack it, and 640 * install it in the destination folder. 641 * 642 * @since 2.8.0 643 * 644 * @param array $options { 645 * Array or string of arguments for upgrading/installing a package. 646 * 647 * @type string $package The full path or URI of the package to install. 648 * Default empty. 649 * @type string $destination The full path to the destination folder. 650 * Default empty. 651 * @type bool $clear_destination Whether to delete any files already in the 652 * destination folder. Default false. 653 * @type bool $clear_working Whether to delete the files from the working 654 * directory after copying them to the destination. 655 * Default true. 656 * @type bool $abort_if_destination_exists Whether to abort the installation if the destination 657 * folder already exists. When true, `$clear_destination` 658 * should be false. Default true. 659 * @type bool $is_multi Whether this run is one of multiple upgrade/installation 660 * actions being performed in bulk. When true, the skin 661 * WP_Upgrader::header() and WP_Upgrader::footer() 662 * aren't called. Default false. 663 * @type array $hook_extra Extra arguments to pass to the filter hooks called by 664 * WP_Upgrader::run(). 665 * } 666 * @return array|false|WP_Error The result from self::install_package() on success, otherwise a WP_Error, 667 * or false if unable to connect to the filesystem. 668 */ 669 public function run( $options ) { 670 671 $defaults = array( 672 'package' => '', // Please always pass this. 673 'destination' => '', // ...and this. 674 'clear_destination' => false, 675 'clear_working' => true, 676 'abort_if_destination_exists' => true, // Abort if the destination directory exists. Pass clear_destination as false please. 677 'is_multi' => false, 678 'hook_extra' => array(), // Pass any extra $hook_extra args here, this will be passed to any hooked filters. 679 ); 680 681 $options = wp_parse_args( $options, $defaults ); 682 683 /** 684 * Filters the package options before running an update. 685 * 686 * See also {@see 'upgrader_process_complete'}. 687 * 688 * @since 4.3.0 689 * 690 * @param array $options { 691 * Options used by the upgrader. 692 * 693 * @type string $package Package for update. 694 * @type string $destination Update location. 695 * @type bool $clear_destination Clear the destination resource. 696 * @type bool $clear_working Clear the working resource. 697 * @type bool $abort_if_destination_exists Abort if the Destination directory exists. 698 * @type bool $is_multi Whether the upgrader is running multiple times. 699 * @type array $hook_extra { 700 * Extra hook arguments. 701 * 702 * @type string $action Type of action. Default 'update'. 703 * @type string $type Type of update process. Accepts 'plugin', 'theme', or 'core'. 704 * @type bool $bulk Whether the update process is a bulk update. Default true. 705 * @type string $plugin Path to the plugin file relative to the plugins directory. 706 * @type string $theme The stylesheet or template name of the theme. 707 * @type string $language_update_type The language pack update type. Accepts 'plugin', 'theme', 708 * or 'core'. 709 * @type object $language_update The language pack update offer. 710 * } 711 * } 712 */ 713 $options = apply_filters( 'upgrader_package_options', $options ); 714 715 if ( ! $options['is_multi'] ) { // Call $this->header separately if running multiple times. 716 $this->skin->header(); 717 } 718 719 // Connect to the filesystem first. 720 $res = $this->fs_connect( array( WP_CONTENT_DIR, $options['destination'] ) ); 721 // Mainly for non-connected filesystem. 722 if ( ! $res ) { 723 if ( ! $options['is_multi'] ) { 724 $this->skin->footer(); 725 } 726 return false; 727 } 728 729 $this->skin->before(); 730 731 if ( is_wp_error( $res ) ) { 732 $this->skin->error( $res ); 733 $this->skin->after(); 734 if ( ! $options['is_multi'] ) { 735 $this->skin->footer(); 736 } 737 return $res; 738 } 739 740 /* 741 * Download the package. Note: If the package is the full path 742 * to an existing local file, it will be returned untouched. 743 */ 744 $download = $this->download_package( $options['package'], true, $options['hook_extra'] ); 745 746 // Allow for signature soft-fail. 747 // WARNING: This may be removed in the future. 748 if ( is_wp_error( $download ) && $download->get_error_data( 'softfail-filename' ) ) { 749 750 // Don't output the 'no signature could be found' failure message for now. 751 if ( 'signature_verification_no_signature' !== $download->get_error_code() || WP_DEBUG ) { 752 // Output the failure error as a normal feedback, and not as an error. 753 $this->skin->feedback( $download->get_error_message() ); 754 755 // Report this failure back to WordPress.org for debugging purposes. 756 wp_version_check( 757 array( 758 'signature_failure_code' => $download->get_error_code(), 759 'signature_failure_data' => $download->get_error_data(), 760 ) 761 ); 762 } 763 764 // Pretend this error didn't happen. 765 $download = $download->get_error_data( 'softfail-filename' ); 766 } 767 768 if ( is_wp_error( $download ) ) { 769 $this->skin->error( $download ); 770 $this->skin->after(); 771 if ( ! $options['is_multi'] ) { 772 $this->skin->footer(); 773 } 774 return $download; 775 } 776 777 $delete_package = ( $download !== $options['package'] ); // Do not delete a "local" file. 778 779 // Unzips the file into a temporary directory. 780 $working_dir = $this->unpack_package( $download, $delete_package ); 781 if ( is_wp_error( $working_dir ) ) { 782 $this->skin->error( $working_dir ); 783 $this->skin->after(); 784 if ( ! $options['is_multi'] ) { 785 $this->skin->footer(); 786 } 787 return $working_dir; 788 } 789 790 // With the given options, this installs it to the destination directory. 791 $result = $this->install_package( 792 array( 793 'source' => $working_dir, 794 'destination' => $options['destination'], 795 'clear_destination' => $options['clear_destination'], 796 'abort_if_destination_exists' => $options['abort_if_destination_exists'], 797 'clear_working' => $options['clear_working'], 798 'hook_extra' => $options['hook_extra'], 799 ) 800 ); 801 802 /** 803 * Filters the result of WP_Upgrader::install_package(). 804 * 805 * @since 5.7.0 806 * 807 * @param array|WP_Error $result Result from WP_Upgrader::install_package(). 808 * @param array $hook_extra Extra arguments passed to hooked filters. 809 */ 810 $result = apply_filters( 'upgrader_install_package_result', $result, $options['hook_extra'] ); 811 812 $this->skin->set_result( $result ); 813 if ( is_wp_error( $result ) ) { 814 $this->skin->error( $result ); 815 816 if ( ! method_exists( $this->skin, 'hide_process_failed' ) || ! $this->skin->hide_process_failed( $result ) ) { 817 $this->skin->feedback( 'process_failed' ); 818 } 819 } else { 820 // Installation succeeded. 821 $this->skin->feedback( 'process_success' ); 822 } 823 824 $this->skin->after(); 825 826 if ( ! $options['is_multi'] ) { 827 828 /** 829 * Fires when the upgrader process is complete. 830 * 831 * See also {@see 'upgrader_package_options'}. 832 * 833 * @since 3.6.0 834 * @since 3.7.0 Added to WP_Upgrader::run(). 835 * @since 4.6.0 `$translations` was added as a possible argument to `$hook_extra`. 836 * 837 * @param WP_Upgrader $upgrader WP_Upgrader instance. In other contexts this might be a 838 * Theme_Upgrader, Plugin_Upgrader, Core_Upgrade, or Language_Pack_Upgrader instance. 839 * @param array $hook_extra { 840 * Array of bulk item update data. 841 * 842 * @type string $action Type of action. Default 'update'. 843 * @type string $type Type of update process. Accepts 'plugin', 'theme', 'translation', or 'core'. 844 * @type bool $bulk Whether the update process is a bulk update. Default true. 845 * @type array $plugins Array of the basename paths of the plugins' main files. 846 * @type array $themes The theme slugs. 847 * @type array $translations { 848 * Array of translations update data. 849 * 850 * @type string $language The locale the translation is for. 851 * @type string $type Type of translation. Accepts 'plugin', 'theme', or 'core'. 852 * @type string $slug Text domain the translation is for. The slug of a theme/plugin or 853 * 'default' for core translations. 854 * @type string $version The version of a theme, plugin, or core. 855 * } 856 * } 857 */ 858 do_action( 'upgrader_process_complete', $this, $options['hook_extra'] ); 859 860 $this->skin->footer(); 861 } 862 863 return $result; 864 } 865 866 /** 867 * Toggle maintenance mode for the site. 868 * 869 * Creates/deletes the maintenance file to enable/disable maintenance mode. 870 * 871 * @since 2.8.0 872 * 873 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 874 * 875 * @param bool $enable True to enable maintenance mode, false to disable. 876 */ 877 public function maintenance_mode( $enable = false ) { 878 global $wp_filesystem; 879 $file = $wp_filesystem->abspath() . '.maintenance'; 880 if ( $enable ) { 881 $this->skin->feedback( 'maintenance_start' ); 882 // Create maintenance file to signal that we are upgrading. 883 $maintenance_string = '<?php $upgrading = ' . time() . '; ?>'; 884 $wp_filesystem->delete( $file ); 885 $wp_filesystem->put_contents( $file, $maintenance_string, FS_CHMOD_FILE ); 886 } elseif ( ! $enable && $wp_filesystem->exists( $file ) ) { 887 $this->skin->feedback( 'maintenance_end' ); 888 $wp_filesystem->delete( $file ); 889 } 890 } 891 892 /** 893 * Creates a lock using WordPress options. 894 * 895 * @since 4.5.0 896 * 897 * @param string $lock_name The name of this unique lock. 898 * @param int $release_timeout Optional. The duration in seconds to respect an existing lock. 899 * Default: 1 hour. 900 * @return bool False if a lock couldn't be created or if the lock is still valid. True otherwise. 901 */ 902 public static function create_lock( $lock_name, $release_timeout = null ) { 903 global $wpdb; 904 if ( ! $release_timeout ) { 905 $release_timeout = HOUR_IN_SECONDS; 906 } 907 $lock_option = $lock_name . '.lock'; 908 909 // Try to lock. 910 $lock_result = $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` ( `option_name`, `option_value`, `autoload` ) VALUES (%s, %s, 'no') /* LOCK */", $lock_option, time() ) ); 911 912 if ( ! $lock_result ) { 913 $lock_result = get_option( $lock_option ); 914 915 // If a lock couldn't be created, and there isn't a lock, bail. 916 if ( ! $lock_result ) { 917 return false; 918 } 919 920 // Check to see if the lock is still valid. If it is, bail. 921 if ( $lock_result > ( time() - $release_timeout ) ) { 922 return false; 923 } 924 925 // There must exist an expired lock, clear it and re-gain it. 926 WP_Upgrader::release_lock( $lock_name ); 927 928 return WP_Upgrader::create_lock( $lock_name, $release_timeout ); 929 } 930 931 // Update the lock, as by this point we've definitely got a lock, just need to fire the actions. 932 update_option( $lock_option, time() ); 933 934 return true; 935 } 936 937 /** 938 * Releases an upgrader lock. 939 * 940 * @since 4.5.0 941 * 942 * @see WP_Upgrader::create_lock() 943 * 944 * @param string $lock_name The name of this unique lock. 945 * @return bool True if the lock was successfully released. False on failure. 946 */ 947 public static function release_lock( $lock_name ) { 948 return delete_option( $lock_name . '.lock' ); 949 } 950 } 951 952 /** Plugin_Upgrader class */ 953 require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader.php'; 954 955 /** Theme_Upgrader class */ 956 require_once ABSPATH . 'wp-admin/includes/class-theme-upgrader.php'; 957 958 /** Language_Pack_Upgrader class */ 959 require_once ABSPATH . 'wp-admin/includes/class-language-pack-upgrader.php'; 960 961 /** Core_Upgrader class */ 962 require_once ABSPATH . 'wp-admin/includes/class-core-upgrader.php'; 963 964 /** File_Upload_Upgrader class */ 965 require_once ABSPATH . 'wp-admin/includes/class-file-upload-upgrader.php'; 966 967 /** WP_Automatic_Updater class */ 968 require_once ABSPATH . 'wp-admin/includes/class-wp-automatic-updater.php';
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