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