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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( $dir ) ) ) ); 236 } 237 break; 238 } 239 } 240 return true; 241 } 242 243 /** 244 * Download a package. 245 * 246 * @since 2.8.0 247 * @since 5.5.0 Added the `$hook_extra` parameter. 248 * 249 * @param string $package The URI of the package. If this is the full path to an 250 * existing local file, it will be returned untouched. 251 * @param bool $check_signatures Whether to validate file signatures. Default false. 252 * @param array $hook_extra Extra arguments to pass to the filter hooks. Default empty array. 253 * @return string|WP_Error The full path to the downloaded package file, or a WP_Error object. 254 */ 255 public function download_package( $package, $check_signatures = false, $hook_extra = array() ) { 256 /** 257 * Filters whether to return the package. 258 * 259 * @since 3.7.0 260 * @since 5.5.0 Added the `$hook_extra` parameter. 261 * 262 * @param bool $reply Whether to bail without returning the package. 263 * Default false. 264 * @param string $package The package file name. 265 * @param WP_Upgrader $this The WP_Upgrader instance. 266 * @param array $hook_extra Extra arguments passed to hooked filters. 267 */ 268 $reply = apply_filters( 'upgrader_pre_download', false, $package, $this, $hook_extra ); 269 if ( false !== $reply ) { 270 return $reply; 271 } 272 273 if ( ! preg_match( '!^(http|https|ftp)://!i', $package ) && file_exists( $package ) ) { // Local file or remote? 274 return $package; // Must be a local file. 275 } 276 277 if ( empty( $package ) ) { 278 return new WP_Error( 'no_package', $this->strings['no_package'] ); 279 } 280 281 $this->skin->feedback( 'downloading_package', $package ); 282 283 $download_file = download_url( $package, 300, $check_signatures ); 284 285 if ( is_wp_error( $download_file ) && ! $download_file->get_error_data( 'softfail-filename' ) ) { 286 return new WP_Error( 'download_failed', $this->strings['download_failed'], $download_file->get_error_message() ); 287 } 288 289 return $download_file; 290 } 291 292 /** 293 * Unpack a compressed package file. 294 * 295 * @since 2.8.0 296 * 297 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 298 * 299 * @param string $package Full path to the package file. 300 * @param bool $delete_package Optional. Whether to delete the package file after attempting 301 * to unpack it. Default true. 302 * @return string|WP_Error The path to the unpacked contents, or a WP_Error on failure. 303 */ 304 public function unpack_package( $package, $delete_package = true ) { 305 global $wp_filesystem; 306 307 $this->skin->feedback( 'unpack_package' ); 308 309 $upgrade_folder = $wp_filesystem->wp_content_dir() . 'upgrade/'; 310 311 // Clean up contents of upgrade directory beforehand. 312 $upgrade_files = $wp_filesystem->dirlist( $upgrade_folder ); 313 if ( ! empty( $upgrade_files ) ) { 314 foreach ( $upgrade_files as $file ) { 315 $wp_filesystem->delete( $upgrade_folder . $file['name'], true ); 316 } 317 } 318 319 // We need a working directory - strip off any .tmp or .zip suffixes. 320 $working_dir = $upgrade_folder . basename( basename( $package, '.tmp' ), '.zip' ); 321 322 // Clean up working directory. 323 if ( $wp_filesystem->is_dir( $working_dir ) ) { 324 $wp_filesystem->delete( $working_dir, true ); 325 } 326 327 // Unzip package to working directory. 328 $result = unzip_file( $package, $working_dir ); 329 330 // Once extracted, delete the package if required. 331 if ( $delete_package ) { 332 unlink( $package ); 333 } 334 335 if ( is_wp_error( $result ) ) { 336 $wp_filesystem->delete( $working_dir, true ); 337 if ( 'incompatible_archive' === $result->get_error_code() ) { 338 return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], $result->get_error_data() ); 339 } 340 return $result; 341 } 342 343 return $working_dir; 344 } 345 346 /** 347 * Flatten the results of WP_Filesystem_Base::dirlist() for iterating over. 348 * 349 * @since 4.9.0 350 * @access protected 351 * 352 * @param array $nested_files Array of files as returned by WP_Filesystem_Base::dirlist(). 353 * @param string $path Relative path to prepend to child nodes. Optional. 354 * @return array A flattened array of the $nested_files specified. 355 */ 356 protected function flatten_dirlist( $nested_files, $path = '' ) { 357 $files = array(); 358 359 foreach ( $nested_files as $name => $details ) { 360 $files[ $path . $name ] = $details; 361 362 // Append children recursively. 363 if ( ! empty( $details['files'] ) ) { 364 $children = $this->flatten_dirlist( $details['files'], $path . $name . '/' ); 365 366 // Merge keeping possible numeric keys, which array_merge() will reindex from 0..n. 367 $files = $files + $children; 368 } 369 } 370 371 return $files; 372 } 373 374 /** 375 * Clears the directory where this item is going to be installed into. 376 * 377 * @since 4.3.0 378 * 379 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 380 * 381 * @param string $remote_destination The location on the remote filesystem to be cleared 382 * @return bool|WP_Error True upon success, WP_Error on failure. 383 */ 384 public function clear_destination( $remote_destination ) { 385 global $wp_filesystem; 386 387 $files = $wp_filesystem->dirlist( $remote_destination, true, true ); 388 389 // False indicates that the $remote_destination doesn't exist. 390 if ( false === $files ) { 391 return true; 392 } 393 394 // Flatten the file list to iterate over. 395 $files = $this->flatten_dirlist( $files ); 396 397 // Check all files are writable before attempting to clear the destination. 398 $unwritable_files = array(); 399 400 // Check writability. 401 foreach ( $files as $filename => $file_details ) { 402 if ( ! $wp_filesystem->is_writable( $remote_destination . $filename ) ) { 403 // Attempt to alter permissions to allow writes and try again. 404 $wp_filesystem->chmod( $remote_destination . $filename, ( 'd' === $file_details['type'] ? FS_CHMOD_DIR : FS_CHMOD_FILE ) ); 405 if ( ! $wp_filesystem->is_writable( $remote_destination . $filename ) ) { 406 $unwritable_files[] = $filename; 407 } 408 } 409 } 410 411 if ( ! empty( $unwritable_files ) ) { 412 return new WP_Error( 'files_not_writable', $this->strings['files_not_writable'], implode( ', ', $unwritable_files ) ); 413 } 414 415 if ( ! $wp_filesystem->delete( $remote_destination, true ) ) { 416 return new WP_Error( 'remove_old_failed', $this->strings['remove_old_failed'] ); 417 } 418 419 return true; 420 } 421 422 /** 423 * Install a package. 424 * 425 * Copies the contents of a package form a source directory, and installs them in 426 * a destination directory. Optionally removes the source. It can also optionally 427 * clear out the destination folder if it already exists. 428 * 429 * @since 2.8.0 430 * 431 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 432 * @global array $wp_theme_directories 433 * 434 * @param array|string $args { 435 * Optional. Array or string of arguments for installing a package. Default empty array. 436 * 437 * @type string $source Required path to the package source. Default empty. 438 * @type string $destination Required path to a folder to install the package in. 439 * Default empty. 440 * @type bool $clear_destination Whether to delete any files already in the destination 441 * folder. Default false. 442 * @type bool $clear_working Whether to delete the files form the working directory 443 * after copying to the destination. Default false. 444 * @type bool $abort_if_destination_exists Whether to abort the installation if 445 * the destination folder already exists. Default true. 446 * @type array $hook_extra Extra arguments to pass to the filter hooks called by 447 * WP_Upgrader::install_package(). Default empty array. 448 * } 449 * 450 * @return array|WP_Error The result (also stored in `WP_Upgrader::$result`), or a WP_Error on failure. 451 */ 452 public function install_package( $args = array() ) { 453 global $wp_filesystem, $wp_theme_directories; 454 455 $defaults = array( 456 'source' => '', // Please always pass this. 457 'destination' => '', // ...and this. 458 'clear_destination' => false, 459 'clear_working' => false, 460 'abort_if_destination_exists' => true, 461 'hook_extra' => array(), 462 ); 463 464 $args = wp_parse_args( $args, $defaults ); 465 466 // These were previously extract()'d. 467 $source = $args['source']; 468 $destination = $args['destination']; 469 $clear_destination = $args['clear_destination']; 470 471 set_time_limit( 300 ); 472 473 if ( empty( $source ) || empty( $destination ) ) { 474 return new WP_Error( 'bad_request', $this->strings['bad_request'] ); 475 } 476 $this->skin->feedback( 'installing_package' ); 477 478 /** 479 * Filters the install response before the installation has started. 480 * 481 * Returning a truthy value, or one that could be evaluated as a WP_Error 482 * will effectively short-circuit the installation, returning that value 483 * instead. 484 * 485 * @since 2.8.0 486 * 487 * @param bool|WP_Error $response 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 ( count( $source_files ) == 0 ) { 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 $this 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. true upon success, WP_Error on failure. 568 * @param string $local_destination The local package destination. 569 * @param string $remote_destination The remote package destination. 570 * @param array $hook_extra Extra arguments passed to hooked filters. 571 */ 572 $removed = apply_filters( 'upgrader_clear_destination', $removed, $local_destination, $remote_destination, $args['hook_extra'] ); 573 574 if ( is_wp_error( $removed ) ) { 575 return $removed; 576 } 577 } elseif ( $args['abort_if_destination_exists'] && $wp_filesystem->exists( $remote_destination ) ) { 578 // If we're not clearing the destination folder and something exists there already, bail. 579 // But first check to see if there are actually any files in the folder. 580 $_files = $wp_filesystem->dirlist( $remote_destination ); 581 if ( ! empty( $_files ) ) { 582 $wp_filesystem->delete( $remote_source, true ); // Clear out the source files. 583 return new WP_Error( 'folder_exists', $this->strings['folder_exists'], $remote_destination ); 584 } 585 } 586 587 // Create destination if needed. 588 if ( ! $wp_filesystem->exists( $remote_destination ) ) { 589 if ( ! $wp_filesystem->mkdir( $remote_destination, FS_CHMOD_DIR ) ) { 590 return new WP_Error( 'mkdir_failed_destination', $this->strings['mkdir_failed'], $remote_destination ); 591 } 592 } 593 594 // Copy new version of item into place. 595 $result = copy_dir( $source, $remote_destination ); 596 if ( is_wp_error( $result ) ) { 597 if ( $args['clear_working'] ) { 598 $wp_filesystem->delete( $remote_source, true ); 599 } 600 return $result; 601 } 602 603 // Clear the working folder? 604 if ( $args['clear_working'] ) { 605 $wp_filesystem->delete( $remote_source, true ); 606 } 607 608 $destination_name = basename( str_replace( $local_destination, '', $destination ) ); 609 if ( '.' === $destination_name ) { 610 $destination_name = ''; 611 } 612 613 $this->result = compact( 'source', 'source_files', 'destination', 'destination_name', 'local_destination', 'remote_destination', 'clear_destination' ); 614 615 /** 616 * Filters the installation response after the installation has finished. 617 * 618 * @since 2.8.0 619 * 620 * @param bool $response Installation response. 621 * @param array $hook_extra Extra arguments passed to hooked filters. 622 * @param array $result Installation result data. 623 */ 624 $res = apply_filters( 'upgrader_post_install', true, $args['hook_extra'], $this->result ); 625 626 if ( is_wp_error( $res ) ) { 627 $this->result = $res; 628 return $res; 629 } 630 631 // Bombard the calling function will all the info which we've just used. 632 return $this->result; 633 } 634 635 /** 636 * Run an upgrade/installation. 637 * 638 * Attempts to download the package (if it is not a local file), unpack it, and 639 * install it in the destination folder. 640 * 641 * @since 2.8.0 642 * 643 * @param array $options { 644 * Array or string of arguments for upgrading/installing a package. 645 * 646 * @type string $package The full path or URI of the package to install. 647 * Default empty. 648 * @type string $destination The full path to the destination folder. 649 * Default empty. 650 * @type bool $clear_destination Whether to delete any files already in the 651 * destination folder. Default false. 652 * @type bool $clear_working Whether to delete the files form the working 653 * directory after copying to the destination. 654 * Default false. 655 * @type bool $abort_if_destination_exists Whether to abort the installation if the destination 656 * folder already exists. When true, `$clear_destination` 657 * should be false. Default true. 658 * @type bool $is_multi Whether this run is one of multiple upgrade/installation 659 * actions being performed in bulk. When true, the skin 660 * WP_Upgrader::header() and WP_Upgrader::footer() 661 * aren't called. Default false. 662 * @type array $hook_extra Extra arguments to pass to the filter hooks called by 663 * WP_Upgrader::run(). 664 * } 665 * @return array|false|WP_Error The result from self::install_package() on success, otherwise a WP_Error, 666 * or false if unable to connect to the filesystem. 667 */ 668 public function run( $options ) { 669 670 $defaults = array( 671 'package' => '', // Please always pass this. 672 'destination' => '', // ...and this. 673 'clear_destination' => false, 674 'abort_if_destination_exists' => true, // Abort if the destination directory exists. Pass clear_destination as false please. 675 'clear_working' => true, 676 'is_multi' => false, 677 'hook_extra' => array(), // Pass any extra $hook_extra args here, this will be passed to any hooked filters. 678 ); 679 680 $options = wp_parse_args( $options, $defaults ); 681 682 /** 683 * Filters the package options before running an update. 684 * 685 * See also {@see 'upgrader_process_complete'}. 686 * 687 * @since 4.3.0 688 * 689 * @param array $options { 690 * Options used by the upgrader. 691 * 692 * @type string $package Package for update. 693 * @type string $destination Update location. 694 * @type bool $clear_destination Clear the destination resource. 695 * @type bool $clear_working Clear the working resource. 696 * @type bool $abort_if_destination_exists Abort if the Destination directory exists. 697 * @type bool $is_multi Whether the upgrader is running multiple times. 698 * @type array $hook_extra { 699 * Extra hook arguments. 700 * 701 * @type string $action Type of action. Default 'update'. 702 * @type string $type Type of update process. Accepts 'plugin', 'theme', or 'core'. 703 * @type bool $bulk Whether the update process is a bulk update. Default true. 704 * @type string $plugin Path to the plugin file relative to the plugins directory. 705 * @type string $theme The stylesheet or template name of the theme. 706 * @type string $language_update_type The language pack update type. Accepts 'plugin', 'theme', 707 * or 'core'. 708 * @type object $language_update The language pack update offer. 709 * } 710 * } 711 */ 712 $options = apply_filters( 'upgrader_package_options', $options ); 713 714 if ( ! $options['is_multi'] ) { // Call $this->header separately if running multiple times. 715 $this->skin->header(); 716 } 717 718 // Connect to the filesystem first. 719 $res = $this->fs_connect( array( WP_CONTENT_DIR, $options['destination'] ) ); 720 // Mainly for non-connected filesystem. 721 if ( ! $res ) { 722 if ( ! $options['is_multi'] ) { 723 $this->skin->footer(); 724 } 725 return false; 726 } 727 728 $this->skin->before(); 729 730 if ( is_wp_error( $res ) ) { 731 $this->skin->error( $res ); 732 $this->skin->after(); 733 if ( ! $options['is_multi'] ) { 734 $this->skin->footer(); 735 } 736 return $res; 737 } 738 739 /* 740 * Download the package (Note, This just returns the filename 741 * of the file if the package is a local file) 742 */ 743 $download = $this->download_package( $options['package'], true, $options['hook_extra'] ); 744 745 // Allow for signature soft-fail. 746 // WARNING: This may be removed in the future. 747 if ( is_wp_error( $download ) && $download->get_error_data( 'softfail-filename' ) ) { 748 749 // Don't output the 'no signature could be found' failure message for now. 750 if ( 'signature_verification_no_signature' !== $download->get_error_code() || WP_DEBUG ) { 751 // Output the failure error as a normal feedback, and not as an error. 752 $this->skin->feedback( $download->get_error_message() ); 753 754 // Report this failure back to WordPress.org for debugging purposes. 755 wp_version_check( 756 array( 757 'signature_failure_code' => $download->get_error_code(), 758 'signature_failure_data' => $download->get_error_data(), 759 ) 760 ); 761 } 762 763 // Pretend this error didn't happen. 764 $download = $download->get_error_data( 'softfail-filename' ); 765 } 766 767 if ( is_wp_error( $download ) ) { 768 $this->skin->error( $download ); 769 $this->skin->after(); 770 if ( ! $options['is_multi'] ) { 771 $this->skin->footer(); 772 } 773 return $download; 774 } 775 776 $delete_package = ( $download != $options['package'] ); // Do not delete a "local" file. 777 778 // Unzips the file into a temporary directory. 779 $working_dir = $this->unpack_package( $download, $delete_package ); 780 if ( is_wp_error( $working_dir ) ) { 781 $this->skin->error( $working_dir ); 782 $this->skin->after(); 783 if ( ! $options['is_multi'] ) { 784 $this->skin->footer(); 785 } 786 return $working_dir; 787 } 788 789 // With the given options, this installs it to the destination directory. 790 $result = $this->install_package( 791 array( 792 'source' => $working_dir, 793 'destination' => $options['destination'], 794 'clear_destination' => $options['clear_destination'], 795 'abort_if_destination_exists' => $options['abort_if_destination_exists'], 796 'clear_working' => $options['clear_working'], 797 'hook_extra' => $options['hook_extra'], 798 ) 799 ); 800 801 $this->skin->set_result( $result ); 802 if ( is_wp_error( $result ) ) { 803 $this->skin->error( $result ); 804 805 if ( ! method_exists( $this->skin, 'hide_process_failed' ) || ! $this->skin->hide_process_failed( $result ) ) { 806 $this->skin->feedback( 'process_failed' ); 807 } 808 } else { 809 // Installation succeeded. 810 $this->skin->feedback( 'process_success' ); 811 } 812 813 $this->skin->after(); 814 815 if ( ! $options['is_multi'] ) { 816 817 /** 818 * Fires when the upgrader process is complete. 819 * 820 * See also {@see 'upgrader_package_options'}. 821 * 822 * @since 3.6.0 823 * @since 3.7.0 Added to WP_Upgrader::run(). 824 * @since 4.6.0 `$translations` was added as a possible argument to `$hook_extra`. 825 * 826 * @param WP_Upgrader $this WP_Upgrader instance. In other contexts, $this, might be a 827 * Theme_Upgrader, Plugin_Upgrader, Core_Upgrade, or Language_Pack_Upgrader instance. 828 * @param array $hook_extra { 829 * Array of bulk item update data. 830 * 831 * @type string $action Type of action. Default 'update'. 832 * @type string $type Type of update process. Accepts 'plugin', 'theme', 'translation', or 'core'. 833 * @type bool $bulk Whether the update process is a bulk update. Default true. 834 * @type array $plugins Array of the basename paths of the plugins' main files. 835 * @type array $themes The theme slugs. 836 * @type array $translations { 837 * Array of translations update data. 838 * 839 * @type string $language The locale the translation is for. 840 * @type string $type Type of translation. Accepts 'plugin', 'theme', or 'core'. 841 * @type string $slug Text domain the translation is for. The slug of a theme/plugin or 842 * 'default' for core translations. 843 * @type string $version The version of a theme, plugin, or core. 844 * } 845 * } 846 */ 847 do_action( 'upgrader_process_complete', $this, $options['hook_extra'] ); 848 849 $this->skin->footer(); 850 } 851 852 return $result; 853 } 854 855 /** 856 * Toggle maintenance mode for the site. 857 * 858 * Creates/deletes the maintenance file to enable/disable maintenance mode. 859 * 860 * @since 2.8.0 861 * 862 * @global WP_Filesystem_Base $wp_filesystem Subclass 863 * 864 * @param bool $enable True to enable maintenance mode, false to disable. 865 */ 866 public function maintenance_mode( $enable = false ) { 867 global $wp_filesystem; 868 $file = $wp_filesystem->abspath() . '.maintenance'; 869 if ( $enable ) { 870 $this->skin->feedback( 'maintenance_start' ); 871 // Create maintenance file to signal that we are upgrading. 872 $maintenance_string = '<?php $upgrading = ' . time() . '; ?>'; 873 $wp_filesystem->delete( $file ); 874 $wp_filesystem->put_contents( $file, $maintenance_string, FS_CHMOD_FILE ); 875 } elseif ( ! $enable && $wp_filesystem->exists( $file ) ) { 876 $this->skin->feedback( 'maintenance_end' ); 877 $wp_filesystem->delete( $file ); 878 } 879 } 880 881 /** 882 * Creates a lock using WordPress options. 883 * 884 * @since 4.5.0 885 * 886 * @param string $lock_name The name of this unique lock. 887 * @param int $release_timeout Optional. The duration in seconds to respect an existing lock. 888 * Default: 1 hour. 889 * @return bool False if a lock couldn't be created or if the lock is still valid. True otherwise. 890 */ 891 public static function create_lock( $lock_name, $release_timeout = null ) { 892 global $wpdb; 893 if ( ! $release_timeout ) { 894 $release_timeout = HOUR_IN_SECONDS; 895 } 896 $lock_option = $lock_name . '.lock'; 897 898 // Try to lock. 899 $lock_result = $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` ( `option_name`, `option_value`, `autoload` ) VALUES (%s, %s, 'no') /* LOCK */", $lock_option, time() ) ); 900 901 if ( ! $lock_result ) { 902 $lock_result = get_option( $lock_option ); 903 904 // If a lock couldn't be created, and there isn't a lock, bail. 905 if ( ! $lock_result ) { 906 return false; 907 } 908 909 // Check to see if the lock is still valid. If it is, bail. 910 if ( $lock_result > ( time() - $release_timeout ) ) { 911 return false; 912 } 913 914 // There must exist an expired lock, clear it and re-gain it. 915 WP_Upgrader::release_lock( $lock_name ); 916 917 return WP_Upgrader::create_lock( $lock_name, $release_timeout ); 918 } 919 920 // Update the lock, as by this point we've definitely got a lock, just need to fire the actions. 921 update_option( $lock_option, time() ); 922 923 return true; 924 } 925 926 /** 927 * Releases an upgrader lock. 928 * 929 * @since 4.5.0 930 * 931 * @see WP_Upgrader::create_lock() 932 * 933 * @param string $lock_name The name of this unique lock. 934 * @return bool True if the lock was successfully released. False on failure. 935 */ 936 public static function release_lock( $lock_name ) { 937 return delete_option( $lock_name . '.lock' ); 938 } 939 940 } 941 942 /** Plugin_Upgrader class */ 943 require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader.php'; 944 945 /** Theme_Upgrader class */ 946 require_once ABSPATH . 'wp-admin/includes/class-theme-upgrader.php'; 947 948 /** Language_Pack_Upgrader class */ 949 require_once ABSPATH . 'wp-admin/includes/class-language-pack-upgrader.php'; 950 951 /** Core_Upgrader class */ 952 require_once ABSPATH . 'wp-admin/includes/class-core-upgrader.php'; 953 954 /** File_Upload_Upgrader class */ 955 require_once ABSPATH . 'wp-admin/includes/class-file-upload-upgrader.php'; 956 957 /** WP_Automatic_Updater class */ 958 require_once ABSPATH . 'wp-admin/includes/class-wp-automatic-updater.php';
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