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/wp-admin/includes/class-wp-upgrader.php

https://bitbucket.org/julianelve/vendor-wordpress
PHP | 1673 lines | 1143 code | 340 blank | 190 comment | 233 complexity | 9623cee992afe87da108d197d74a2ae9 MD5 | raw file
   1<?php
   2/**
   3 * A File upgrader class for WordPress.
   4 *
   5 * This set of classes are designed to be used to upgrade/install a local set of files on the filesystem via the Filesystem Abstraction classes.
   6 *
   7 * @link http://trac.wordpress.org/ticket/7875 consolidate plugin/theme/core upgrade/install functions
   8 *
   9 * @package WordPress
  10 * @subpackage Upgrader
  11 * @since 2.8.0
  12 */
  13
  14/**
  15 * WordPress Upgrader class for Upgrading/Installing a local set of files via the Filesystem Abstraction classes from a Zip file.
  16 *
  17 * @TODO More Detailed docs, for methods as well.
  18 *
  19 * @package WordPress
  20 * @subpackage Upgrader
  21 * @since 2.8.0
  22 */
  23class WP_Upgrader {
  24	var $strings = array();
  25	var $skin = null;
  26	var $result = array();
  27
  28	function __construct($skin = null) {
  29		if ( null == $skin )
  30			$this->skin = new WP_Upgrader_Skin();
  31		else
  32			$this->skin = $skin;
  33	}
  34
  35	function init() {
  36		$this->skin->set_upgrader($this);
  37		$this->generic_strings();
  38	}
  39
  40	function generic_strings() {
  41		$this->strings['bad_request'] = __('Invalid Data provided.');
  42		$this->strings['fs_unavailable'] = __('Could not access filesystem.');
  43		$this->strings['fs_error'] = __('Filesystem error.');
  44		$this->strings['fs_no_root_dir'] = __('Unable to locate WordPress Root directory.');
  45		$this->strings['fs_no_content_dir'] = __('Unable to locate WordPress Content directory (wp-content).');
  46		$this->strings['fs_no_plugins_dir'] = __('Unable to locate WordPress Plugin directory.');
  47		$this->strings['fs_no_themes_dir'] = __('Unable to locate WordPress Theme directory.');
  48		/* translators: %s: directory name */
  49		$this->strings['fs_no_folder'] = __('Unable to locate needed folder (%s).');
  50
  51		$this->strings['download_failed'] = __('Download failed.');
  52		$this->strings['installing_package'] = __('Installing the latest version&#8230;');
  53		$this->strings['folder_exists'] = __('Destination folder already exists.');
  54		$this->strings['mkdir_failed'] = __('Could not create directory.');
  55		$this->strings['incompatible_archive'] = __('The package could not be installed.');
  56
  57		$this->strings['maintenance_start'] = __('Enabling Maintenance mode&#8230;');
  58		$this->strings['maintenance_end'] = __('Disabling Maintenance mode&#8230;');
  59	}
  60
  61	function fs_connect( $directories = array() ) {
  62		global $wp_filesystem;
  63
  64		if ( false === ($credentials = $this->skin->request_filesystem_credentials()) )
  65			return false;
  66
  67		if ( ! WP_Filesystem($credentials) ) {
  68			$error = true;
  69			if ( is_object($wp_filesystem) && $wp_filesystem->errors->get_error_code() )
  70				$error = $wp_filesystem->errors;
  71			$this->skin->request_filesystem_credentials($error); //Failed to connect, Error and request again
  72			return false;
  73		}
  74
  75		if ( ! is_object($wp_filesystem) )
  76			return new WP_Error('fs_unavailable', $this->strings['fs_unavailable'] );
  77
  78		if ( is_wp_error($wp_filesystem->errors) && $wp_filesystem->errors->get_error_code() )
  79			return new WP_Error('fs_error', $this->strings['fs_error'], $wp_filesystem->errors);
  80
  81		foreach ( (array)$directories as $dir ) {
  82			switch ( $dir ) {
  83				case ABSPATH:
  84					if ( ! $wp_filesystem->abspath() )
  85						return new WP_Error('fs_no_root_dir', $this->strings['fs_no_root_dir']);
  86					break;
  87				case WP_CONTENT_DIR:
  88					if ( ! $wp_filesystem->wp_content_dir() )
  89						return new WP_Error('fs_no_content_dir', $this->strings['fs_no_content_dir']);
  90					break;
  91				case WP_PLUGIN_DIR:
  92					if ( ! $wp_filesystem->wp_plugins_dir() )
  93						return new WP_Error('fs_no_plugins_dir', $this->strings['fs_no_plugins_dir']);
  94					break;
  95				case WP_CONTENT_DIR . '/themes':
  96					if ( ! $wp_filesystem->find_folder(WP_CONTENT_DIR . '/themes') )
  97						return new WP_Error('fs_no_themes_dir', $this->strings['fs_no_themes_dir']);
  98					break;
  99				default:
 100					if ( ! $wp_filesystem->find_folder($dir) )
 101						return new WP_Error('fs_no_folder', sprintf($this->strings['fs_no_folder'], $dir));
 102					break;
 103			}
 104		}
 105		return true;
 106	} //end fs_connect();
 107
 108	function download_package($package) {
 109
 110		if ( ! preg_match('!^(http|https|ftp)://!i', $package) && file_exists($package) ) //Local file or remote?
 111			return $package; //must be a local file..
 112
 113		if ( empty($package) )
 114			return new WP_Error('no_package', $this->strings['no_package']);
 115
 116		$this->skin->feedback('downloading_package', $package);
 117
 118		$download_file = download_url($package);
 119
 120		if ( is_wp_error($download_file) )
 121			return new WP_Error('download_failed', $this->strings['download_failed'], $download_file->get_error_message());
 122
 123		return $download_file;
 124	}
 125
 126	function unpack_package($package, $delete_package = true) {
 127		global $wp_filesystem;
 128
 129		$this->skin->feedback('unpack_package');
 130
 131		$upgrade_folder = $wp_filesystem->wp_content_dir() . 'upgrade/';
 132
 133		//Clean up contents of upgrade directory beforehand.
 134		$upgrade_files = $wp_filesystem->dirlist($upgrade_folder);
 135		if ( !empty($upgrade_files) ) {
 136			foreach ( $upgrade_files as $file )
 137				$wp_filesystem->delete($upgrade_folder . $file['name'], true);
 138		}
 139
 140		//We need a working directory
 141		$working_dir = $upgrade_folder . basename($package, '.zip');
 142
 143		// Clean up working directory
 144		if ( $wp_filesystem->is_dir($working_dir) )
 145			$wp_filesystem->delete($working_dir, true);
 146
 147		// Unzip package to working directory
 148		$result = unzip_file($package, $working_dir); //TODO optimizations, Copy when Move/Rename would suffice?
 149
 150		// Once extracted, delete the package if required.
 151		if ( $delete_package )
 152			unlink($package);
 153
 154		if ( is_wp_error($result) ) {
 155			$wp_filesystem->delete($working_dir, true);
 156			if ( 'incompatible_archive' == $result->get_error_code() ) {
 157				return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], $result->get_error_data() );
 158			}
 159			return $result;
 160		}
 161
 162		return $working_dir;
 163	}
 164
 165	function install_package($args = array()) {
 166		global $wp_filesystem;
 167		$defaults = array( 'source' => '', 'destination' => '', //Please always pass these
 168						'clear_destination' => false, 'clear_working' => false,
 169						'hook_extra' => array());
 170
 171		$args = wp_parse_args($args, $defaults);
 172		extract($args);
 173
 174		@set_time_limit( 300 );
 175
 176		if ( empty($source) || empty($destination) )
 177			return new WP_Error('bad_request', $this->strings['bad_request']);
 178
 179		$this->skin->feedback('installing_package');
 180
 181		$res = apply_filters('upgrader_pre_install', true, $hook_extra);
 182		if ( is_wp_error($res) )
 183			return $res;
 184
 185		//Retain the Original source and destinations
 186		$remote_source = $source;
 187		$local_destination = $destination;
 188
 189		$source_files = array_keys( $wp_filesystem->dirlist($remote_source) );
 190		$remote_destination = $wp_filesystem->find_folder($local_destination);
 191
 192		//Locate which directory to copy to the new folder, This is based on the actual folder holding the files.
 193		if ( 1 == count($source_files) && $wp_filesystem->is_dir( trailingslashit($source) . $source_files[0] . '/') ) //Only one folder? Then we want its contents.
 194			$source = trailingslashit($source) . trailingslashit($source_files[0]);
 195		elseif ( count($source_files) == 0 )
 196			return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __( 'The plugin contains no files.' ) ); //There are no files?
 197		else //Its only a single file, The upgrader will use the foldername of this file as the destination folder. foldername is based on zip filename.
 198			$source = trailingslashit($source);
 199
 200		//Hook ability to change the source file location..
 201		$source = apply_filters('upgrader_source_selection', $source, $remote_source, $this);
 202		if ( is_wp_error($source) )
 203			return $source;
 204
 205		//Has the source location changed? If so, we need a new source_files list.
 206		if ( $source !== $remote_source )
 207			$source_files = array_keys( $wp_filesystem->dirlist($source) );
 208
 209		//Protection against deleting files in any important base directories.
 210		if ( in_array( $destination, array(ABSPATH, WP_CONTENT_DIR, WP_PLUGIN_DIR, WP_CONTENT_DIR . '/themes') ) ) {
 211			$remote_destination = trailingslashit($remote_destination) . trailingslashit(basename($source));
 212			$destination = trailingslashit($destination) . trailingslashit(basename($source));
 213		}
 214
 215		if ( $clear_destination ) {
 216			//We're going to clear the destination if there's something there
 217			$this->skin->feedback('remove_old');
 218			$removed = true;
 219			if ( $wp_filesystem->exists($remote_destination) )
 220				$removed = $wp_filesystem->delete($remote_destination, true);
 221			$removed = apply_filters('upgrader_clear_destination', $removed, $local_destination, $remote_destination, $hook_extra);
 222
 223			if ( is_wp_error($removed) )
 224				return $removed;
 225			else if ( ! $removed )
 226				return new WP_Error('remove_old_failed', $this->strings['remove_old_failed']);
 227		} elseif ( $wp_filesystem->exists($remote_destination) ) {
 228			//If we're not clearing the destination folder and something exists there already, Bail.
 229			//But first check to see if there are actually any files in the folder.
 230			$_files = $wp_filesystem->dirlist($remote_destination);
 231			if ( ! empty($_files) ) {
 232				$wp_filesystem->delete($remote_source, true); //Clear out the source files.
 233				return new WP_Error('folder_exists', $this->strings['folder_exists'], $remote_destination );
 234			}
 235		}
 236
 237		//Create destination if needed
 238		if ( !$wp_filesystem->exists($remote_destination) )
 239			if ( !$wp_filesystem->mkdir($remote_destination, FS_CHMOD_DIR) )
 240				return new WP_Error('mkdir_failed', $this->strings['mkdir_failed'], $remote_destination);
 241
 242		// Copy new version of item into place.
 243		$result = copy_dir($source, $remote_destination);
 244		if ( is_wp_error($result) ) {
 245			if ( $clear_working )
 246				$wp_filesystem->delete($remote_source, true);
 247			return $result;
 248		}
 249
 250		//Clear the Working folder?
 251		if ( $clear_working )
 252			$wp_filesystem->delete($remote_source, true);
 253
 254		$destination_name = basename( str_replace($local_destination, '', $destination) );
 255		if ( '.' == $destination_name )
 256			$destination_name = '';
 257
 258		$this->result = compact('local_source', 'source', 'source_name', 'source_files', 'destination', 'destination_name', 'local_destination', 'remote_destination', 'clear_destination', 'delete_source_dir');
 259
 260		$res = apply_filters('upgrader_post_install', true, $hook_extra, $this->result);
 261		if ( is_wp_error($res) ) {
 262			$this->result = $res;
 263			return $res;
 264		}
 265
 266		//Bombard the calling function will all the info which we've just used.
 267		return $this->result;
 268	}
 269
 270	function run($options) {
 271
 272		$defaults = array( 	'package' => '', //Please always pass this.
 273							'destination' => '', //And this
 274							'clear_destination' => false,
 275							'clear_working' => true,
 276							'is_multi' => false,
 277							'hook_extra' => array() //Pass any extra $hook_extra args here, this will be passed to any hooked filters.
 278						);
 279
 280		$options = wp_parse_args($options, $defaults);
 281		extract($options);
 282
 283		//Connect to the Filesystem first.
 284		$res = $this->fs_connect( array(WP_CONTENT_DIR, $destination) );
 285		if ( ! $res ) //Mainly for non-connected filesystem.
 286			return false;
 287
 288		if ( is_wp_error($res) ) {
 289			$this->skin->error($res);
 290			return $res;
 291		}
 292
 293		if ( !$is_multi ) // call $this->header separately if running multiple times
 294			$this->skin->header();
 295
 296		$this->skin->before();
 297
 298		//Download the package (Note, This just returns the filename of the file if the package is a local file)
 299		$download = $this->download_package( $package );
 300		if ( is_wp_error($download) ) {
 301			$this->skin->error($download);
 302			$this->skin->after();
 303			return $download;
 304		}
 305
 306		$delete_package = ($download != $package); // Do not delete a "local" file
 307
 308		//Unzips the file into a temporary directory
 309		$working_dir = $this->unpack_package( $download, $delete_package );
 310		if ( is_wp_error($working_dir) ) {
 311			$this->skin->error($working_dir);
 312			$this->skin->after();
 313			return $working_dir;
 314		}
 315
 316		//With the given options, this installs it to the destination directory.
 317		$result = $this->install_package( array(
 318											'source' => $working_dir,
 319											'destination' => $destination,
 320											'clear_destination' => $clear_destination,
 321											'clear_working' => $clear_working,
 322											'hook_extra' => $hook_extra
 323										) );
 324		$this->skin->set_result($result);
 325		if ( is_wp_error($result) ) {
 326			$this->skin->error($result);
 327			$this->skin->feedback('process_failed');
 328		} else {
 329			//Install Succeeded
 330			$this->skin->feedback('process_success');
 331		}
 332		$this->skin->after();
 333
 334		if ( !$is_multi )
 335			$this->skin->footer();
 336
 337		return $result;
 338	}
 339
 340	function maintenance_mode($enable = false) {
 341		global $wp_filesystem;
 342		$file = $wp_filesystem->abspath() . '.maintenance';
 343		if ( $enable ) {
 344			$this->skin->feedback('maintenance_start');
 345			// Create maintenance file to signal that we are upgrading
 346			$maintenance_string = '<?php $upgrading = ' . time() . '; ?>';
 347			$wp_filesystem->delete($file);
 348			$wp_filesystem->put_contents($file, $maintenance_string, FS_CHMOD_FILE);
 349		} else if ( !$enable && $wp_filesystem->exists($file) ) {
 350			$this->skin->feedback('maintenance_end');
 351			$wp_filesystem->delete($file);
 352		}
 353	}
 354
 355}
 356
 357/**
 358 * Plugin Upgrader class for WordPress Plugins, It is designed to upgrade/install plugins from a local zip, remote zip URL, or uploaded zip file.
 359 *
 360 * @TODO More Detailed docs, for methods as well.
 361 *
 362 * @package WordPress
 363 * @subpackage Upgrader
 364 * @since 2.8.0
 365 */
 366class Plugin_Upgrader extends WP_Upgrader {
 367
 368	var $result;
 369	var $bulk = false;
 370	var $show_before = '';
 371
 372	function upgrade_strings() {
 373		$this->strings['up_to_date'] = __('The plugin is at the latest version.');
 374		$this->strings['no_package'] = __('Update package not available.');
 375		$this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>&#8230;');
 376		$this->strings['unpack_package'] = __('Unpacking the update&#8230;');
 377		$this->strings['remove_old'] = __('Removing the old version of the plugin&#8230;');
 378		$this->strings['remove_old_failed'] = __('Could not remove the old plugin.');
 379		$this->strings['process_failed'] = __('Plugin update failed.');
 380		$this->strings['process_success'] = __('Plugin updated successfully.');
 381	}
 382
 383	function install_strings() {
 384		$this->strings['no_package'] = __('Install package not available.');
 385		$this->strings['downloading_package'] = __('Downloading install package from <span class="code">%s</span>&#8230;');
 386		$this->strings['unpack_package'] = __('Unpacking the package&#8230;');
 387		$this->strings['installing_package'] = __('Installing the plugin&#8230;');
 388		$this->strings['process_failed'] = __('Plugin install failed.');
 389		$this->strings['process_success'] = __('Plugin installed successfully.');
 390	}
 391
 392	function install($package) {
 393
 394		$this->init();
 395		$this->install_strings();
 396
 397		add_filter('upgrader_source_selection', array(&$this, 'check_package') );
 398
 399		$this->run(array(
 400					'package' => $package,
 401					'destination' => WP_PLUGIN_DIR,
 402					'clear_destination' => false, //Do not overwrite files.
 403					'clear_working' => true,
 404					'hook_extra' => array()
 405					));
 406
 407		remove_filter('upgrader_source_selection', array(&$this, 'check_package') );
 408
 409		if ( ! $this->result || is_wp_error($this->result) )
 410			return $this->result;
 411
 412		// Force refresh of plugin update information
 413		delete_site_transient('update_plugins');
 414		wp_cache_delete( 'plugins', 'plugins' );
 415
 416		return true;
 417	}
 418
 419	function upgrade($plugin) {
 420
 421		$this->init();
 422		$this->upgrade_strings();
 423
 424		$current = get_site_transient( 'update_plugins' );
 425		if ( !isset( $current->response[ $plugin ] ) ) {
 426			$this->skin->before();
 427			$this->skin->set_result(false);
 428			$this->skin->error('up_to_date');
 429			$this->skin->after();
 430			return false;
 431		}
 432
 433		// Get the URL to the zip file
 434		$r = $current->response[ $plugin ];
 435
 436		add_filter('upgrader_pre_install', array(&$this, 'deactivate_plugin_before_upgrade'), 10, 2);
 437		add_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'), 10, 4);
 438		//'source_selection' => array(&$this, 'source_selection'), //there's a trac ticket to move up the directory for zip's which are made a bit differently, useful for non-.org plugins.
 439
 440		$this->run(array(
 441					'package' => $r->package,
 442					'destination' => WP_PLUGIN_DIR,
 443					'clear_destination' => true,
 444					'clear_working' => true,
 445					'hook_extra' => array(
 446								'plugin' => $plugin
 447					)
 448				));
 449
 450		// Cleanup our hooks, in case something else does a upgrade on this connection.
 451		remove_filter('upgrader_pre_install', array(&$this, 'deactivate_plugin_before_upgrade'));
 452		remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'));
 453
 454		if ( ! $this->result || is_wp_error($this->result) )
 455			return $this->result;
 456
 457		// Force refresh of plugin update information
 458		delete_site_transient('update_plugins');
 459		wp_cache_delete( 'plugins', 'plugins' );
 460	}
 461
 462	function bulk_upgrade($plugins) {
 463
 464		$this->init();
 465		$this->bulk = true;
 466		$this->upgrade_strings();
 467
 468		$current = get_site_transient( 'update_plugins' );
 469
 470		add_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'), 10, 4);
 471
 472		$this->skin->header();
 473
 474		// Connect to the Filesystem first.
 475		$res = $this->fs_connect( array(WP_CONTENT_DIR, WP_PLUGIN_DIR) );
 476		if ( ! $res ) {
 477			$this->skin->footer();
 478			return false;
 479		}
 480
 481		$this->skin->bulk_header();
 482
 483		// Only start maintenance mode if running in Multisite OR the plugin is in use
 484		$maintenance = is_multisite(); // @TODO: This should only kick in for individual sites if at all possible.
 485		foreach ( $plugins as $plugin )
 486			$maintenance = $maintenance || (is_plugin_active($plugin) && isset($current->response[ $plugin ]) ); // Only activate Maintenance mode if a plugin is active AND has an update available
 487		if ( $maintenance )
 488			$this->maintenance_mode(true);
 489
 490		$results = array();
 491
 492		$this->update_count = count($plugins);
 493		$this->update_current = 0;
 494		foreach ( $plugins as $plugin ) {
 495			$this->update_current++;
 496			$this->skin->plugin_info = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin, false, true);
 497
 498			if ( !isset( $current->response[ $plugin ] ) ) {
 499				$this->skin->set_result(true);
 500				$this->skin->before();
 501				$this->skin->feedback('up_to_date');
 502				$this->skin->after();
 503				$results[$plugin] = true;
 504				continue;
 505			}
 506
 507			// Get the URL to the zip file
 508			$r = $current->response[ $plugin ];
 509
 510			$this->skin->plugin_active = is_plugin_active($plugin);
 511
 512			$result = $this->run(array(
 513						'package' => $r->package,
 514						'destination' => WP_PLUGIN_DIR,
 515						'clear_destination' => true,
 516						'clear_working' => true,
 517						'is_multi' => true,
 518						'hook_extra' => array(
 519									'plugin' => $plugin
 520						)
 521					));
 522
 523			$results[$plugin] = $this->result;
 524
 525			// Prevent credentials auth screen from displaying multiple times
 526			if ( false === $result )
 527				break;
 528		} //end foreach $plugins
 529
 530		$this->maintenance_mode(false);
 531
 532		$this->skin->bulk_footer();
 533
 534		$this->skin->footer();
 535
 536		// Cleanup our hooks, in case something else does a upgrade on this connection.
 537		remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'));
 538
 539		// Force refresh of plugin update information
 540		delete_site_transient('update_plugins');
 541		wp_cache_delete( 'plugins', 'plugins' );
 542
 543		return $results;
 544	}
 545
 546	function check_package($source) {
 547		global $wp_filesystem;
 548
 549		if ( is_wp_error($source) )
 550			return $source;
 551
 552		$working_directory = str_replace( $wp_filesystem->wp_content_dir(), trailingslashit(WP_CONTENT_DIR), $source);
 553		if ( ! is_dir($working_directory) ) // Sanity check, if the above fails, lets not prevent installation.
 554			return $source;
 555
 556		// Check the folder contains at least 1 valid plugin.
 557		$plugins_found = false;
 558		foreach ( glob( $working_directory . '*.php' ) as $file ) {
 559			$info = get_plugin_data($file, false, false);
 560			if ( !empty( $info['Name'] ) ) {
 561				$plugins_found = true;
 562				break;
 563			}
 564		}
 565
 566		if ( ! $plugins_found )
 567			return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __('No valid plugins were found.') );
 568
 569		return $source;
 570	}
 571
 572	//return plugin info.
 573	function plugin_info() {
 574		if ( ! is_array($this->result) )
 575			return false;
 576		if ( empty($this->result['destination_name']) )
 577			return false;
 578
 579		$plugin = get_plugins('/' . $this->result['destination_name']); //Ensure to pass with leading slash
 580		if ( empty($plugin) )
 581			return false;
 582
 583		$pluginfiles = array_keys($plugin); //Assume the requested plugin is the first in the list
 584
 585		return $this->result['destination_name'] . '/' . $pluginfiles[0];
 586	}
 587
 588	//Hooked to pre_install
 589	function deactivate_plugin_before_upgrade($return, $plugin) {
 590
 591		if ( is_wp_error($return) ) //Bypass.
 592			return $return;
 593
 594		$plugin = isset($plugin['plugin']) ? $plugin['plugin'] : '';
 595		if ( empty($plugin) )
 596			return new WP_Error('bad_request', $this->strings['bad_request']);
 597
 598		if ( is_plugin_active($plugin) ) {
 599			//Deactivate the plugin silently, Prevent deactivation hooks from running.
 600			deactivate_plugins($plugin, true);
 601		}
 602	}
 603
 604	//Hooked to upgrade_clear_destination
 605	function delete_old_plugin($removed, $local_destination, $remote_destination, $plugin) {
 606		global $wp_filesystem;
 607
 608		if ( is_wp_error($removed) )
 609			return $removed; //Pass errors through.
 610
 611		$plugin = isset($plugin['plugin']) ? $plugin['plugin'] : '';
 612		if ( empty($plugin) )
 613			return new WP_Error('bad_request', $this->strings['bad_request']);
 614
 615		$plugins_dir = $wp_filesystem->wp_plugins_dir();
 616		$this_plugin_dir = trailingslashit( dirname($plugins_dir . $plugin) );
 617
 618		if ( ! $wp_filesystem->exists($this_plugin_dir) ) //If its already vanished.
 619			return $removed;
 620
 621		// If plugin is in its own directory, recursively delete the directory.
 622		if ( strpos($plugin, '/') && $this_plugin_dir != $plugins_dir ) //base check on if plugin includes directory separator AND that its not the root plugin folder
 623			$deleted = $wp_filesystem->delete($this_plugin_dir, true);
 624		else
 625			$deleted = $wp_filesystem->delete($plugins_dir . $plugin);
 626
 627		if ( ! $deleted )
 628			return new WP_Error('remove_old_failed', $this->strings['remove_old_failed']);
 629
 630		return true;
 631	}
 632}
 633
 634/**
 635 * Theme Upgrader class for WordPress Themes, It is designed to upgrade/install themes from a local zip, remote zip URL, or uploaded zip file.
 636 *
 637 * @TODO More Detailed docs, for methods as well.
 638 *
 639 * @package WordPress
 640 * @subpackage Upgrader
 641 * @since 2.8.0
 642 */
 643class Theme_Upgrader extends WP_Upgrader {
 644
 645	var $result;
 646	var $bulk = false;
 647
 648	function upgrade_strings() {
 649		$this->strings['up_to_date'] = __('The theme is at the latest version.');
 650		$this->strings['no_package'] = __('Update package not available.');
 651		$this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>&#8230;');
 652		$this->strings['unpack_package'] = __('Unpacking the update&#8230;');
 653		$this->strings['remove_old'] = __('Removing the old version of the theme&#8230;');
 654		$this->strings['remove_old_failed'] = __('Could not remove the old theme.');
 655		$this->strings['process_failed'] = __('Theme update failed.');
 656		$this->strings['process_success'] = __('Theme updated successfully.');
 657	}
 658
 659	function install_strings() {
 660		$this->strings['no_package'] = __('Install package not available.');
 661		$this->strings['downloading_package'] = __('Downloading install package from <span class="code">%s</span>&#8230;');
 662		$this->strings['unpack_package'] = __('Unpacking the package&#8230;');
 663		$this->strings['installing_package'] = __('Installing the theme&#8230;');
 664		$this->strings['process_failed'] = __('Theme install failed.');
 665		$this->strings['process_success'] = __('Theme installed successfully.');
 666		/* translators: 1: theme name, 2: version */
 667		$this->strings['process_success_specific'] = __('Successfully installed the theme <strong>%1$s %2$s</strong>.');
 668		$this->strings['parent_theme_search'] = __('This theme requires a parent theme. Checking if it is installed&#8230;');
 669		/* translators: 1: theme name, 2: version */
 670		$this->strings['parent_theme_prepare_install'] = __('Preparing to install <strong>%1$s %2$s</strong>&#8230;');
 671		/* translators: 1: theme name, 2: version */
 672		$this->strings['parent_theme_currently_installed'] = __('The parent theme, <strong>%1$s %2$s</strong>, is currently installed.');
 673		/* translators: 1: theme name, 2: version */
 674		$this->strings['parent_theme_install_success'] = __('Successfully installed the parent theme, <strong>%1$s %2$s</strong>.');
 675		$this->strings['parent_theme_not_found'] = __('<strong>The parent theme could not be found.</strong> You will need to install the parent theme, <strong>%s</strong>, before you can use this child theme.');
 676	}
 677
 678	function check_parent_theme_filter($install_result, $hook_extra, $child_result) {
 679		// Check to see if we need to install a parent theme
 680		$theme_info = $this->theme_info();
 681
 682		if ( ! $theme_info->parent() )
 683			return $install_result;
 684
 685		$this->skin->feedback( 'parent_theme_search' );
 686
 687		if ( ! $theme_info->parent()->errors() ) {
 688			$this->skin->feedback( 'parent_theme_currently_installed', $theme_info->parent()->display('Name'), $theme_info->parent()->display('Version') );
 689			// We already have the theme, fall through.
 690			return $install_result;
 691		}
 692
 693		// We don't have the parent theme, lets install it
 694		$api = themes_api('theme_information', array('slug' => $theme_info->get('Template'), 'fields' => array('sections' => false, 'tags' => false) ) ); //Save on a bit of bandwidth.
 695
 696		if ( ! $api || is_wp_error($api) ) {
 697			$this->skin->feedback( 'parent_theme_not_found', $theme_info->get('Template') );
 698			// Don't show activate or preview actions after install
 699			add_filter('install_theme_complete_actions', array(&$this, 'hide_activate_preview_actions') );
 700			return $install_result;
 701		}
 702
 703		// Backup required data we're going to override:
 704		$child_api = $this->skin->api;
 705		$child_success_message = $this->strings['process_success'];
 706
 707		// Override them
 708		$this->skin->api = $api;
 709		$this->strings['process_success_specific'] = $this->strings['parent_theme_install_success'];//, $api->name, $api->version);
 710
 711		$this->skin->feedback('parent_theme_prepare_install', $api->name, $api->version);
 712
 713		add_filter('install_theme_complete_actions', '__return_false', 999); // Don't show any actions after installing the theme.
 714
 715		// Install the parent theme
 716		$parent_result = $this->run( array(
 717			'package' => $api->download_link,
 718			'destination' => WP_CONTENT_DIR . '/themes',
 719			'clear_destination' => false, //Do not overwrite files.
 720			'clear_working' => true
 721		) );
 722
 723		if ( is_wp_error($parent_result) )
 724			add_filter('install_theme_complete_actions', array(&$this, 'hide_activate_preview_actions') );
 725
 726		// Start cleaning up after the parents installation
 727		remove_filter('install_theme_complete_actions', '__return_false', 999);
 728
 729		// Reset child's result and data
 730		$this->result = $child_result;
 731		$this->skin->api = $child_api;
 732		$this->strings['process_success'] = $child_success_message;
 733
 734		return $install_result;
 735	}
 736
 737	function hide_activate_preview_actions($actions) {
 738		unset($actions['activate'], $actions['preview']);
 739		return $actions;
 740	}
 741
 742	function install($package) {
 743
 744		$this->init();
 745		$this->install_strings();
 746
 747		add_filter('upgrader_source_selection', array(&$this, 'check_package') );
 748		add_filter('upgrader_post_install', array(&$this, 'check_parent_theme_filter'), 10, 3);
 749
 750		$options = array(
 751						'package' => $package,
 752						'destination' => WP_CONTENT_DIR . '/themes',
 753						'clear_destination' => false, //Do not overwrite files.
 754						'clear_working' => true
 755						);
 756
 757		$this->run($options);
 758
 759		remove_filter('upgrader_source_selection', array(&$this, 'check_package') );
 760		remove_filter('upgrader_post_install', array(&$this, 'check_parent_theme_filter'), 10, 3);
 761
 762		if ( ! $this->result || is_wp_error($this->result) )
 763			return $this->result;
 764
 765		// Force refresh of theme update information
 766		wp_clean_themes_cache();
 767
 768		return true;
 769	}
 770
 771	function upgrade($theme) {
 772
 773		$this->init();
 774		$this->upgrade_strings();
 775
 776		// Is an update available?
 777		$current = get_site_transient( 'update_themes' );
 778		if ( !isset( $current->response[ $theme ] ) ) {
 779			$this->skin->before();
 780			$this->skin->set_result(false);
 781			$this->skin->error('up_to_date');
 782			$this->skin->after();
 783			return false;
 784		}
 785
 786		$r = $current->response[ $theme ];
 787
 788		add_filter('upgrader_pre_install', array(&$this, 'current_before'), 10, 2);
 789		add_filter('upgrader_post_install', array(&$this, 'current_after'), 10, 2);
 790		add_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'), 10, 4);
 791
 792		$options = array(
 793						'package' => $r['package'],
 794						'destination' => WP_CONTENT_DIR . '/themes',
 795						'clear_destination' => true,
 796						'clear_working' => true,
 797						'hook_extra' => array(
 798											'theme' => $theme
 799											)
 800						);
 801
 802		$this->run($options);
 803
 804		remove_filter('upgrader_pre_install', array(&$this, 'current_before'), 10, 2);
 805		remove_filter('upgrader_post_install', array(&$this, 'current_after'), 10, 2);
 806		remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'), 10, 4);
 807
 808		if ( ! $this->result || is_wp_error($this->result) )
 809			return $this->result;
 810
 811		// Force refresh of theme update information
 812		wp_clean_themes_cache();
 813
 814		return true;
 815	}
 816
 817	function bulk_upgrade($themes) {
 818
 819		$this->init();
 820		$this->bulk = true;
 821		$this->upgrade_strings();
 822
 823		$current = get_site_transient( 'update_themes' );
 824
 825		add_filter('upgrader_pre_install', array(&$this, 'current_before'), 10, 2);
 826		add_filter('upgrader_post_install', array(&$this, 'current_after'), 10, 2);
 827		add_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'), 10, 4);
 828
 829		$this->skin->header();
 830
 831		// Connect to the Filesystem first.
 832		$res = $this->fs_connect( array(WP_CONTENT_DIR) );
 833		if ( ! $res ) {
 834			$this->skin->footer();
 835			return false;
 836		}
 837
 838		$this->skin->bulk_header();
 839
 840		// Only start maintenance mode if running in Multisite OR the theme is in use
 841		$maintenance = is_multisite(); // @TODO: This should only kick in for individual sites if at all possible.
 842		foreach ( $themes as $theme )
 843			$maintenance = $maintenance || $theme == get_stylesheet() || $theme == get_template();
 844		if ( $maintenance )
 845			$this->maintenance_mode(true);
 846
 847		$results = array();
 848
 849		$this->update_count = count($themes);
 850		$this->update_current = 0;
 851		foreach ( $themes as $theme ) {
 852			$this->update_current++;
 853
 854			$this->skin->theme_info = $this->theme_info($theme);
 855
 856			if ( !isset( $current->response[ $theme ] ) ) {
 857				$this->skin->set_result(true);
 858				$this->skin->before();
 859				$this->skin->feedback('up_to_date');
 860				$this->skin->after();
 861				$results[$theme] = true;
 862				continue;
 863			}
 864
 865			// Get the URL to the zip file
 866			$r = $current->response[ $theme ];
 867
 868			$options = array(
 869							'package' => $r['package'],
 870							'destination' => WP_CONTENT_DIR . '/themes',
 871							'clear_destination' => true,
 872							'clear_working' => true,
 873							'hook_extra' => array(
 874												'theme' => $theme
 875												)
 876							);
 877
 878			$result = $this->run($options);
 879
 880			$results[$theme] = $this->result;
 881
 882			// Prevent credentials auth screen from displaying multiple times
 883			if ( false === $result )
 884				break;
 885		} //end foreach $plugins
 886
 887		$this->maintenance_mode(false);
 888
 889		$this->skin->bulk_footer();
 890
 891		$this->skin->footer();
 892
 893		// Cleanup our hooks, in case something else does a upgrade on this connection.
 894		remove_filter('upgrader_pre_install', array(&$this, 'current_before'), 10, 2);
 895		remove_filter('upgrader_post_install', array(&$this, 'current_after'), 10, 2);
 896		remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'), 10, 4);
 897
 898		// Force refresh of theme update information
 899		wp_clean_themes_cache();
 900
 901		return $results;
 902	}
 903
 904	function check_package($source) {
 905		global $wp_filesystem;
 906
 907		if ( is_wp_error($source) )
 908			return $source;
 909
 910		// Check the folder contains a valid theme
 911		$working_directory = str_replace( $wp_filesystem->wp_content_dir(), trailingslashit(WP_CONTENT_DIR), $source);
 912		if ( ! is_dir($working_directory) ) // Sanity check, if the above fails, lets not prevent installation.
 913			return $source;
 914
 915		// A proper archive should have a style.css file in the single subdirectory
 916		if ( ! file_exists( $working_directory . 'style.css' ) )
 917			return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __('The theme is missing the <code>style.css</code> stylesheet.') );
 918
 919		$info = get_file_data( $working_directory . 'style.css', array( 'Name' => 'Theme Name', 'Template' => 'Template' ) );
 920
 921		if ( empty( $info['Name'] ) )
 922			return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __("The <code>style.css</code> stylesheet doesn't contain a valid theme header.") );
 923
 924		// If it's not a child theme, it must have at least an index.php to be legit.
 925		if ( empty( $info['Template'] ) && ! file_exists( $working_directory . 'index.php' ) )
 926			return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __('The theme is missing the <code>index.php</code> file.') );
 927
 928		return $source;
 929	}
 930
 931	function current_before($return, $theme) {
 932
 933		if ( is_wp_error($return) )
 934			return $return;
 935
 936		$theme = isset($theme['theme']) ? $theme['theme'] : '';
 937
 938		if ( $theme != get_stylesheet() ) //If not current
 939			return $return;
 940		//Change to maintenance mode now.
 941		if ( ! $this->bulk )
 942			$this->maintenance_mode(true);
 943
 944		return $return;
 945	}
 946
 947	function current_after($return, $theme) {
 948		if ( is_wp_error($return) )
 949			return $return;
 950
 951		$theme = isset($theme['theme']) ? $theme['theme'] : '';
 952
 953		if ( $theme != get_stylesheet() ) // If not current
 954			return $return;
 955
 956		// Ensure stylesheet name hasn't changed after the upgrade:
 957		if ( $theme == get_stylesheet() && $theme != $this->result['destination_name'] ) {
 958			wp_clean_themes_cache();
 959			$stylesheet = $this->result['destination_name'];
 960			switch_theme( $stylesheet );
 961		}
 962
 963		//Time to remove maintenance mode
 964		if ( ! $this->bulk )
 965			$this->maintenance_mode(false);
 966		return $return;
 967	}
 968
 969	function delete_old_theme($removed, $local_destination, $remote_destination, $theme) {
 970		global $wp_filesystem;
 971
 972		$theme = isset($theme['theme']) ? $theme['theme'] : '';
 973
 974		if ( is_wp_error($removed) || empty($theme) )
 975			return $removed; //Pass errors through.
 976
 977		$themes_dir = $wp_filesystem->wp_themes_dir();
 978		if ( $wp_filesystem->exists( trailingslashit($themes_dir) . $theme ) )
 979			if ( ! $wp_filesystem->delete( trailingslashit($themes_dir) . $theme, true ) )
 980				return false;
 981		return true;
 982	}
 983
 984	function theme_info($theme = null) {
 985
 986		if ( empty($theme) ) {
 987			if ( !empty($this->result['destination_name']) )
 988				$theme = $this->result['destination_name'];
 989			else
 990				return false;
 991		}
 992		return wp_get_theme( $theme, WP_CONTENT_DIR . '/themes/' );
 993	}
 994
 995}
 996
 997/**
 998 * Core Upgrader class for WordPress. It allows for WordPress to upgrade itself in combination with the wp-admin/includes/update-core.php file
 999 *
1000 * @TODO More Detailed docs, for methods as well.
1001 *
1002 * @package WordPress
1003 * @subpackage Upgrader
1004 * @since 2.8.0
1005 */
1006class Core_Upgrader extends WP_Upgrader {
1007
1008	function upgrade_strings() {
1009		$this->strings['up_to_date'] = __('WordPress is at the latest version.');
1010		$this->strings['no_package'] = __('Update package not available.');
1011		$this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>&#8230;');
1012		$this->strings['unpack_package'] = __('Unpacking the update&#8230;');
1013		$this->strings['copy_failed'] = __('Could not copy files.');
1014		$this->strings['copy_failed_space'] = __('Could not copy files. You may have run out of disk space.' );
1015	}
1016
1017	function upgrade($current) {
1018		global $wp_filesystem, $wp_version;
1019
1020		$this->init();
1021		$this->upgrade_strings();
1022
1023		if ( !empty($feedback) )
1024			add_filter('update_feedback', $feedback);
1025
1026		// Is an update available?
1027		if ( !isset( $current->response ) || $current->response == 'latest' )
1028			return new WP_Error('up_to_date', $this->strings['up_to_date']);
1029
1030		$res = $this->fs_connect( array(ABSPATH, WP_CONTENT_DIR) );
1031		if ( is_wp_error($res) )
1032			return $res;
1033
1034		$wp_dir = trailingslashit($wp_filesystem->abspath());
1035
1036		// If partial update is returned from the API, use that, unless we're doing a reinstall.
1037		// If we cross the new_bundled version number, then use the new_bundled zip.
1038		// Don't though if the constant is set to skip bundled items.
1039		// If the API returns a no_content zip, go with it. Finally, default to the full zip.
1040		if ( $current->packages->partial && 'reinstall' != $current->response && $wp_version == $current->partial_version )
1041			$to_download = 'partial';
1042		elseif ( $current->packages->new_bundled && version_compare( $wp_version, $current->new_bundled, '<' )
1043			&& ( ! defined( 'CORE_UPGRADE_SKIP_NEW_BUNDLED' ) || ! CORE_UPGRADE_SKIP_NEW_BUNDLED ) )
1044			$to_download = 'new_bundled';
1045		elseif ( $current->packages->no_content )
1046			$to_download = 'no_content';
1047		else
1048			$to_download = 'full';
1049
1050		$download = $this->download_package( $current->packages->$to_download );
1051		if ( is_wp_error($download) )
1052			return $download;
1053
1054		$working_dir = $this->unpack_package( $download );
1055		if ( is_wp_error($working_dir) )
1056			return $working_dir;
1057
1058		// Copy update-core.php from the new version into place.
1059		if ( !$wp_filesystem->copy($working_dir . '/wordpress/wp-admin/includes/update-core.php', $wp_dir . 'wp-admin/includes/update-core.php', true) ) {
1060			$wp_filesystem->delete($working_dir, true);
1061			return new WP_Error('copy_failed', $this->strings['copy_failed']);
1062		}
1063		$wp_filesystem->chmod($wp_dir . 'wp-admin/includes/update-core.php', FS_CHMOD_FILE);
1064
1065		require(ABSPATH . 'wp-admin/includes/update-core.php');
1066
1067		if ( ! function_exists( 'update_core' ) )
1068			return new WP_Error( 'copy_failed_space', $this->strings['copy_failed_space'] );
1069
1070		return update_core($working_dir, $wp_dir);
1071	}
1072
1073}
1074
1075/**
1076 * Generic Skin for the WordPress Upgrader classes. This skin is designed to be extended for specific purposes.
1077 *
1078 * @TODO More Detailed docs, for methods as well.
1079 *
1080 * @package WordPress
1081 * @subpackage Upgrader
1082 * @since 2.8.0
1083 */
1084class WP_Upgrader_Skin {
1085
1086	var $upgrader;
1087	var $done_header = false;
1088	var $result = false;
1089
1090	function __construct($args = array()) {
1091		$defaults = array( 'url' => '', 'nonce' => '', 'title' => '', 'context' => false );
1092		$this->options = wp_parse_args($args, $defaults);
1093	}
1094
1095	function set_upgrader(&$upgrader) {
1096		if ( is_object($upgrader) )
1097			$this->upgrader =& $upgrader;
1098		$this->add_strings();
1099	}
1100
1101	function add_strings() {
1102	}
1103
1104	function set_result($result) {
1105		$this->result = $result;
1106	}
1107
1108	function request_filesystem_credentials($error = false) {
1109		$url = $this->options['url'];
1110		$context = $this->options['context'];
1111		if ( !empty($this->options['nonce']) )
1112			$url = wp_nonce_url($url, $this->options['nonce']);
1113		return request_filesystem_credentials($url, '', $error, $context); //Possible to bring inline, Leaving as is for now.
1114	}
1115
1116	function header() {
1117		if ( $this->done_header )
1118			return;
1119		$this->done_header = true;
1120		echo '<div class="wrap">';
1121		echo screen_icon();
1122		echo '<h2>' . $this->options['title'] . '</h2>';
1123	}
1124	function footer() {
1125		echo '</div>';
1126	}
1127
1128	function error($errors) {
1129		if ( ! $this->done_header )
1130			$this->header();
1131		if ( is_string($errors) ) {
1132			$this->feedback($errors);
1133		} elseif ( is_wp_error($errors) && $errors->get_error_code() ) {
1134			foreach ( $errors->get_error_messages() as $message ) {
1135				if ( $errors->get_error_data() )
1136					$this->feedback($message . ' ' . $errors->get_error_data() );
1137				else
1138					$this->feedback($message);
1139			}
1140		}
1141	}
1142
1143	function feedback($string) {
1144		if ( isset( $this->upgrader->strings[$string] ) )
1145			$string = $this->upgrader->strings[$string];
1146
1147		if ( strpos($string, '%') !== false ) {
1148			$args = func_get_args();
1149			$args = array_splice($args, 1);
1150			if ( !empty($args) )
1151				$string = vsprintf($string, $args);
1152		}
1153		if ( empty($string) )
1154			return;
1155		show_message($string);
1156	}
1157	function before() {}
1158	function after() {}
1159
1160}
1161
1162/**
1163 * Plugin Upgrader Skin for WordPress Plugin Upgrades.
1164 *
1165 * @TODO More Detailed docs, for methods as well.
1166 *
1167 * @package WordPress
1168 * @subpackage Upgrader
1169 * @since 2.8.0
1170 */
1171class Plugin_Upgrader_Skin extends WP_Upgrader_Skin {
1172	var $plugin = '';
1173	var $plugin_active = false;
1174	var $plugin_network_active = false;
1175
1176	function __construct($args = array()) {
1177		$defaults = array( 'url' => '', 'plugin' => '', 'nonce' => '', 'title' => __('Update Plugin') );
1178		$args = wp_parse_args($args, $defaults);
1179
1180		$this->plugin = $args['plugin'];
1181
1182		$this->plugin_active = is_plugin_active( $this->plugin );
1183		$this->plugin_network_active = is_plugin_active_for_network( $this->plugin );
1184
1185		parent::__construct($args);
1186	}
1187
1188	function after() {
1189		$this->plugin = $this->upgrader->plugin_info();
1190		if ( !empty($this->plugin) && !is_wp_error($this->result) && $this->plugin_active ){
1191			echo '<iframe style="border:0;overflow:hidden" width="100%" height="170px" src="' . wp_nonce_url('update.php?action=activate-plugin&networkwide=' . $this->plugin_network_active . '&plugin=' . $this->plugin, 'activate-plugin_' . $this->plugin) .'"></iframe>';
1192		}
1193
1194		$update_actions =  array(
1195			'activate_plugin' => '<a href="' . wp_nonce_url('plugins.php?action=activate&amp;plugin=' . $this->plugin, 'activate-plugin_' . $this->plugin) . '" title="' . esc_attr__('Activate this plugin') . '" target="_parent">' . __('Activate Plugin') . '</a>',
1196			'plugins_page' => '<a href="' . self_admin_url('plugins.php') . '" title="' . esc_attr__('Go to plugins page') . '" target="_parent">' . __('Return to Plugins page') . '</a>'
1197		);
1198		if ( $this->plugin_active || ! $this->result || is_wp_error( $this->result ) || ! current_user_can( 'activate_plugins' ) )
1199			unset( $update_actions['activate_plugin'] );
1200
1201		$update_actions = apply_filters('update_plugin_complete_actions', $update_actions, $this->plugin);
1202		if ( ! empty($update_actions) )
1203			$this->feedback(implode(' | ', (array)$update_actions));
1204	}
1205
1206	function before() {
1207		if ( $this->upgrader->show_before ) {
1208			echo $this->upgrader->show_before;
1209			$this->upgrader->show_before = '';
1210		}
1211	}
1212}
1213
1214/**
1215 * Plugin Upgrader Skin for WordPress Plugin Upgrades.
1216 *
1217 * @package WordPress
1218 * @subpackage Upgrader
1219 * @since 3.0.0
1220 */
1221class Bulk_Upgrader_Skin extends WP_Upgrader_Skin {
1222	var $in_loop = false;
1223	var $error = false;
1224
1225	function __construct($args = array()) {
1226		$defaults = array( 'url' => '', 'nonce' => '' );
1227		$args = wp_parse_args($args, $defaults);
1228
1229		parent::__construct($args);
1230	}
1231
1232	function add_strings() {
1233		$this->upgrader->strings['skin_upgrade_start'] = __('The update process is starting. This process may take a while on some hosts, so please be patient.');
1234		$this->upgrader->strings['skin_update_failed_error'] = __('An error occurred while updating %1$s: <strong>%2$s</strong>.');
1235		$this->upgrader->strings['skin_update_failed'] = __('The update of %1$s failed.');
1236		$this->upgrader->strings['skin_update_successful'] = __('%1$s updated successfully.').' <a onclick="%2$s" href="#" class="hide-if-no-js"><span>'.__('Show Details').'</span><span class="hidden">'.__('Hide Details').'</span>.</a>';
1237		$this->upgrader->strings['skin_upgrade_end'] = __('All updates have been completed.');
1238	}
1239
1240	function feedback($string) {
1241		if ( isset( $this->upgrader->strings[$string] ) )
1242			$string = $this->upgrader->strings[$string];
1243
1244		if ( strpos($string, '%') !== false ) {
1245			$args = func_get_args();
1246			$args = array_splice($args, 1);
1247			if ( !empty($args) )
1248				$string = vsprintf($string, $args);
1249		}
1250		if ( empty($string) )
1251			return;
1252		if ( $this->in_loop )
1253			echo "$string<br />\n";
1254		else
1255			echo "<p>$string</p>\n";
1256	}
1257
1258	function header() {
1259		// Nothing, This will be displayed within a iframe.
1260	}
1261
1262	function footer() {
1263		// Nothing, This will be displayed within a iframe.
1264	}
1265	function error($error) {
1266		if ( is_string($error) && isset( $this->upgrader->strings[$error] ) )
1267			$this->error = $this->upgrader->strings[$error];
1268
1269		if ( is_wp_error($error) ) {
1270			foreach ( $error->get_error_messages() as $emessage ) {
1271				if ( $error->get_error_data() )
1272					$messages[] = $emessage . ' ' . $error->get_error_data();
1273				else
1274					$messages[] = $emessage;
1275			}
1276			$this->error = implode(', ', $messages);
1277		}
1278		echo '<script type="text/javascript">jQuery(\'.waiting-' . esc_js($this->upgrader->update_current) . '\').hide();</script>';
1279	}
1280
1281	function bulk_header() {
1282		$this->feedback('skin_upgrade_start');
1283	}
1284
1285	function bulk_footer() {
1286		$this->feedback('skin_upgrade_end');
1287	}
1288
1289	function before($title = '') {
1290		$this->in_loop = true;
1291		printf( '<h4>' . $this->upgrader->strings['skin_before_update_header'] . ' <span class="spinner waiting-' . $this->upgrader->update_current . '"></span></h4>',  $title, $this->upgrader->update_current, $this->upgrader->update_count);
1292		echo '<script type="text/javascript">jQuery(\'.waiting-' . esc_js($this->upgrader->update_current) . '\').css("display", "inline-block");</script>';
1293		echo '<div class="update-messages hide-if-js" id="progress-' . esc_attr($this->upgrader->update_current) . '"><p>';
1294		$this->flush_output();
1295	}
1296
1297	function after($title = '') {
1298		echo '</p></div>';
1299		if ( $this->error || ! $this->result ) {
1300			if ( $this->error )
1301				echo '<div class="error"><p>' . sprintf($this->upgrader->strings['skin_update_failed_error'], $title, $this->error) . '</p></div>';
1302			else
1303				echo '<div class="error"><p>' . sprintf($this->upgrader->strings['skin_update_failed'], $title) . '</p></div>';
1304
1305			echo '<script type="text/javascript">jQuery(\'#progress-' . esc_js($this->upgrader->update_current) . '\').show();</script>';
1306		}
1307		if ( !empty($this->result) && !is_wp_error($this->result) ) {
1308			echo '<div class="updated"><p>' . sprintf($this->upgrader->strings['skin_update_successful'], $title, 'jQuery(\'#progress-' . esc_js($this->upgrader->update_current) . '\').toggle();jQuery(\'span\', this).toggle(); return false;') . '</p></div>';
1309			echo '<script type="text/javascript">jQuery(\'.waiting-' . esc_js($this->upgrader->update_current) . '\').hide();</script>';
1310		}
1311
1312		$this->reset();
1313		$this->flush_output();
1314	}
1315
1316	function reset() {
1317		$this->in_loop = false;
1318		$this->error = false;
1319	}
1320
1321	function flush_output() {
1322		wp_ob_end_flush_all();
1323		flush();
1324	}
1325}
1326
1327class Bulk_Plugin_Upgrader_Skin extends Bulk_Upgrader_Skin {
1328	var $plugin_info = array(); // Plugin_Upgrader::bulk() will fill this in.
1329
1330	function __construct($args = array()) {
1331		parent::__construct($args);
1332	}
1333
1334	function add_strings() {
1335		parent::add_strings();
1336		$this->upgrader->strings['skin_before_update_header'] = __('Updating Plugin %1$s (%2$d/%3$d)');
1337	}
1338
1339	function before() {
1340		parent::before($this->plugin_info['Title']);
1341	}
1342
1343	function after() {
1344		parent::after($this->plugin_info['Title']);
1345	}
1346	function bulk_footer() {
1347		parent::bulk_footer();
1348		$update_actions =  array(
1349			'plugins_page' => '<a href="' . self_admin_url('plugins.php') . '" title="' . esc_attr__('Go to plugins page') . '" target="_parent">' . __('Return to Plugins page') . '</a>',
1350			'updates_page' => '<a href="' . self_admin_url('update-core.php') . '" title="' . esc_attr__('Go to WordPress Updates page') . '" target="_parent">' . __('Return to WordPress Updates') . '</a>'
1351		);
1352		if ( ! current_user_can( 'activate_plugins' ) )
1353			unset( $update_actions['plugins_page'] );
1354
1355		$update_actions = apply_filters('update_bulk_plugins_complete_actions', $update_actions, $this->plugin_info);
1356		if ( ! empty($update_actions) )
1357			$this->feedback(implode(' | ', (array)$update_actions));
1358	}
1359}
1360
1361class Bulk_Theme_Upgrader_Skin extends Bulk_Upgrader_Skin {
1362	var $theme_info = array(); // Theme_Upgrader::bulk() will fill this in.
1363
1364	function __construct($args = array()) {
1365		parent::__construct($args);
1366	}
1367
1368	function add_strings() {
1369		parent::add_strings();
1370		$this->upgrader->strings['skin_before_update_header'] = __('Updating Theme %1$s (%2$d/%3$d)');
1371	}
1372
1373	function before() {
1374		parent::before( $this->theme_info->display('Name') );
1375	}
1376
1377	function after() {
1378		parent::after( $this->theme_info->display('Name') );
1379	}
1380
1381	function bulk_footer() {
1382		parent::bulk_footer();
1383		$update_actions =  array(
1384			'themes_page' => '<a href="' . self_admin_url('themes.php') . '" title="' . esc_attr__('Go to themes page') . '" target="_parent">' . __('Return to Themes page') . '</a>',
1385			'updates_page' => '<a href="' . self_admin_url('update-core.php') . '" title="' . esc_attr__('Go to WordPress Updates page') . '" target="_parent">' . __('Return to WordPress Updates') . '</a>'
1386		);
1387		if ( ! current_user_can( 'switch_themes' ) && ! current_user_can( 'edit_theme_options' ) )
1388			unset( $update_actions['themes_page'] );
1389
1390		$update_actions = apply_filters('update_bulk_theme_complete_actions', $update_actions, $this->theme_info );
1391		if ( ! empty($update_actions) )
1392			$this->feedback(implode(' | ', (array)$update_actions));
1393	}
1394}
1395
1396/**
1397 * Plugin Installer Skin for WordPress Plugin Installer.
1398 *
1399 * @TODO More Detailed docs, for methods as well.
1400 *
1401 * @package WordPress
1402 * @subpackage Upgrader
1403 * @since 2.8.0
1404 */
1405class Plugin_Installer_Skin extends WP_Upgrader_Skin {
1406	var $api;
1407	var $type;
1408
1409	function __construct($args = array()) {
1410		$defaults = array( 'type' => 'web', 'url' => '', 'plugin' => '', 'nonce' => '', 'title' => '' );
1411		$args = wp_parse_args($args, $defaults);
1412
1413		$this->type = $args['type'];
1414		$this->api = isset($args['api']) ? $args['api'] : array();
1415
1416		parent::__construct($args);
1417	}
1418
1419	function before() {
1420		if ( !empty($this->api) )
1421			$this->upgrader->strings['process_success'] = sprintf( __('Successfully installed the plugin <strong>%s %s</strong>.'), $this->api->name, $this->api->version);
1422	}
1423
1424	function after() {
1425
1426		$plugin_file = $this->upgrader->plugin_info();
1427
1428		$install_actions = array();
1429
1430		$from = isset($_GET['from']) ? stripslashes($_GET['from']) : 'plugins';
1431
1432		if ( 'import' == $from )
1433			$install_actions['activate_plugin'] = '<a href="' . wp_nonce_url('plugins.php?action=activate&amp;from=import&amp;plugin=' . $plugin_file, 'activate-plugin_' . $plugin_file) . '" title="' . esc_attr__('Activate this plugin') . '" target="_parent">' . __('Activate Plugin &amp; Run Importer') . '</a>';
1434		else
1435			$install_actions['activate_plugin'] = '<a href="' . wp_nonce_url('plugins.php?action=activate&amp;plugin=' . $plugin_file, 'activate-plugin_' . $plugin_file) . '" title="' . esc_attr__('Activate this plugin') . '" target="_parent">' . __('Activate Plugin') . '</a>';
1436
1437		if ( is_multisite() && current_user_can( 'manage_network_plugins' ) ) {
1438			$install_actions['network_activate'] = '<a href="' . wp_nonce_url('plugins.php?action=activate&amp;networkwide=1&amp;plugin=' . $plugin_file, 'activate-plugin_' . $plugin_file) . '" title="' . esc_attr__('Activate this plugin for all sites in this network') . '" target="_parent">' . __('Network Activate') . '</a>';
1439			unset( $install_actions['activate_plugin'] );
1440		}
1441
1442		if ( 'import' == $from )
1443			$install_actions['importers_page'] = '<a href="' . admin_url('import.php') . '" title="' . esc_attr__('Return to Importers') . '" target="_parent">' . __('Return to Importers') . '</a>';
1444		else if ( $this->type == 'web' )
1445			$install_actions['plugins_page'] = '<a href="' . self_admin_url('plugin-install.php') . '" title="' . esc_attr__('Return to Plugin Installer') . '" target="_parent">' . __('Return to Plugin Installer') . '</a>';
1446		else
1447			$install_actions['plugins_page'] = '<a href="' . self_admin_url('plugins.php') . '" title="' . esc_attr__('Return to Plugins page') . '" target="_parent">' . __('Return to Plugins page') . '</a>';
1448
1449		if ( ! $this->result || is_wp_error($this->result) ) {
1450			unset( $install_actions['activate_plugin'], $install_actions['network_activate'] );
1451		} elseif ( ! current_user_can( 'activate_plugins' ) ) {
1452			unset( $install_actions['activate_plugin'] );
1453		}
1454
1455		$install_actions = apply_filters('install_plugin_complete_actions', $install_actions, $this->api, $plugin_file);
1456		if ( ! empty($install_actions) )
1457			$this->feedback(implode(' | ', (array)$install_actions));
1458	}
1459}
1460
1461/**
1462 * Theme Installer Skin for the WordPress Theme Installer.
1463 *
1464 * @TODO More Detailed docs, for methods as well.
1465 *
1466 * @package WordPress
1467 * @subpackage Upgrader
1468 * @since 2.8.0
1469 */
1470class Theme_Installer_Skin extends WP_Upgrader_Skin {
1471	var $api;
1472	var $type;
1473
1474	function __construct($args = array()) {
1475		$defaults = array( 'type' => 'web', 'url' => '', 'theme' => '', 'nonce' => '', 'title' => '' );
1476		$args = wp_parse_args($args, $defaults);
1477
1478		$this->type = $args['type'];
1479		$this->api = isset($args['api']) ? $args['api'] : array();
1480
1481		parent::__construct($args);
1482	}
1483
1484	function before() {
1485		if ( !empty($this->api) )
1486			$this->upgrader->strings['process_success'] = sprintf( $this->upgrader->strings['process_success_specific'], $this->api->name, $this->api->version);
1487	}
1488
1489	function after() {
1490		if ( empty($this->upgrader->result['destination_name']) )
1491			return;
1492
1493		$theme_info = $this->upgrader->theme_info();
1494		if ( empty( $theme_info ) )
1495			return;
1496
1497		$name       = $theme_info->display('Name');
1498		$stylesheet = $this->upgrader->result['destination_name'];
1499		$template   = $theme_info->get_template();
1500
1501		$preview_link = add_query_arg( array(
1502			'preview'    => 1,
1503			'template'   => urlencode( $template ),
1504			'stylesheet' => urlencode( $stylesheet ),
1505		), trailingslashit( home_url() ) );
1506
1507		$activate_link = add_query_arg( array(
1508			'action'     => 'activate',
1509			'template'   => urlencode( $template ),
1510			'stylesheet' => urlencode( $stylesheet ),
1511		), admin_url('themes.php') );
1512		$activate_link = wp_nonce_url( $activate_link, 'switch-theme_' . $stylesheet );
1513
1514		$install_actions = array();
1515		$install_actions['preview']  = '<a href="' . esc_url( $preview_link ) . '" class="hide-if-customize" title="' . esc_attr( sprintf( __('Preview &#8220;%s&#8221;'), $name ) ) . '">' . __('Preview') . '</a>';
1516		$install_actions['preview'] .= '<a href="' . wp_customize_url( $stylesheet ) . '" class="hide-if-no-customize load-customize" title="' . esc_attr( sprintf( __('Preview &#8220;%s&#8221;'), $name ) ) . '">' . __('Live Preview') . '</a>';
1517		$install_actions['activate'] = '<a href="' . esc_url( $activate_link ) . '" class="activatelink" title="' . esc_attr( sprintf( __('Activate &#8220;%s&#8221;'), $name ) ) . '">' . __('Activate') . '</a>';
1518
1519		if ( is_network_admin() && current_user_can( 'manage_network_themes' ) )
1520			$install_actions['network_enable'] = '<a href="' . esc_url( wp_nonce_url( 'themes.php?action=enable&amp;theme=' . urlencode( $stylesheet ), 'enable-theme_' . $stylesheet ) ) . '" title="' . esc_attr__( 'Enable this theme for all sites in this network' ) . '" target="_parent">' . __( 'Network Enable' ) . '</a>';
1521
1522		if ( $this->type == 'web' )
1523			$install_actions['themes_page'] = '<a href="' . self_admin_url('theme-install.php') . '" title="' . esc_attr__('Return to Theme Installer') . '" target="_parent">' . __('Return to Theme Installer') . '</a>';
1524		elseif ( current_user_can( 'switch_themes' ) || current_user_can( 'edit_theme_options' ) )
1525			$install_actions['themes_page'] = '<a href="' . self_admin_url('themes.php') . '" title="' . esc_attr__('Themes page') . '" target="_parent">' . __('Return to Themes page') . '</a>';
1526
1527		if ( ! $this->result || is_wp_error($this->result) || is_network_admin() || ! current_user_can( 'switch_themes' ) )
1528			unset( $install_actions['activate'], $install_actions['preview'] );
1529
1530		$install_actions = apply_filters('install_theme_complete_actions', $install_actions, $this->api, $stylesheet, $theme_info);
1531		if ( ! empty($install_actions) )
1532			$this->feedback(implode(' | ', (array)$install_actions));
1533	}
1534}
1535
1536/**
1537 * Theme Upgrader Skin for WordPress Theme Upgrades.
1538 *
1539 * @TODO More Detailed docs, for methods as well.
1540 *
1541 * @package WordPress
1542 * @subpackage Upgrader
1543 * @since 2.8.0
1544 */
1545class Theme_Upgrader_Skin extends WP_Upgrader_Skin {
1546	var $theme = '';
1547
1548	function __construct($args = array()) {
1549		$defaults = array( 'url' => '', 'theme' => '', 'nonce' => '', 'title' => __('Update Theme') );
1550		$args = wp_parse_args($args, $defaults);
1551
1552		$this->theme = $args['theme'];
1553
1554		parent::__construct($args);
1555	}
1556
1557	function after() {
1558
1559		$update_actions = array();
1560		if ( ! empty( $this->upgrader->result['destination_name'] ) && $theme_info = $this->upgrader->theme_info() ) {
1561			$name       = $theme_info->display('Name');
1562			$stylesheet = $this->upgrader->result['destination_name'];
1563			$template   = $theme_info->get_template();
1564
1565			$preview_link = add_query_arg( array(
1566				'preview'    => 1,
1567				'template'   => urlencode( $template ),
1568				'stylesheet' => urlencode( $stylesheet ),
1569			), trailingslashit( home_url() ) );
1570
1571			$activate_link = add_query_arg( array(
1572				'action'     => 'activate',
1573				'template'   => urlencode( $template ),
1574				'stylesheet' => urlencode( $stylesheet ),
1575			), admin_url('themes.php') );
1576			$activate_link = wp_nonce_url( $activate_link, 'switch-theme_' . $stylesheet );
1577
1578			if ( get_stylesheet() == $stylesheet ) {
1579				if ( current_user_can( 'edit_theme_options' ) )
1580					$update_actions['preview']  = '<a href="' . wp_customize_url( $stylesheet ) . '" class="hide-if-no-customize load-customize" title="' . esc_attr( sprintf( __('Customize &#8220;%s&#8221;'), $name ) ) . '">' . __('Customize') . '</a>';
1581			} elseif ( current_user_can( 'switch_themes' ) ) {
1582				$update_actions['preview']  = '<a href="' . esc_url( $preview_link ) . '" class="hide-if-customize" title="' . esc_attr( sprintf( __('Preview &#8220;%s&#8221;'), $name ) ) . '">' . __('Preview') . '</a>';
1583				$update_actions['preview'] .= '<a href="' . wp_customize_url( $stylesheet ) . '" class="hide-if-no-customize load-customize" title="' . esc_attr( sprintf( __('Preview &#8220;%s&#8221;'), $name ) ) . '">' . __('Live Preview') . '</a>';
1584				$update_actions['activate'] = '<a href="' . esc_url( $activate_link ) . '" class="activatelink" title="' . esc_attr( sprintf( __('Activate &#8220;%s&#8221;'), $name ) ) . '">' . __('Activate') . '</a>';
1585			}
1586
1587			if ( ! $this->result || is_wp_error( $this->result ) || is_network_admin() )
1588				unset( $update_actions['preview'], $update_actions['activate'] );
1589		}
1590
1591		$update_actions['themes_page'] = '<a href="' . self_admin_url('themes.php') . '" title="' . esc_attr__('Return to Themes page') . '" target="_parent">' . __('Return to Themes page') . '</a>';
1592
1593		$update_actions = apply_filters('update_theme_complete_actions', $update_actions, $this->theme);
1594		if ( ! empty($update_actions) )
1595			$this->feedback(implode(' | ', (array)$update_actions));
1596	}
1597}
1598
1599/**
1600 * Upgrade Skin helper for File uploads. This class handles the upload process and passes it as if its a local file to the Upgrade/Installer functions.
1601 *
1602 * @TODO More Detailed docs, for methods as well.
1603 *
1604 * @package WordPress
1605 * @subpackage Upgrader
1606 * @since 2.8.0
1607 */
1608class File_Upload_Upgrader {
1609	var $package;
1610	var $filename;
1611	var $id = 0;
1612
1613	function __construct($form, $urlholder) {
1614
1615		if ( empty($_FILES[$form]['name']) && empty($_GET[$urlholder]) )
1616			wp_die(__('Please select a file'));
1617
1618		//Handle a newly uploaded file, Else assume its already been uploaded
1619		if ( ! empty($_FILES) ) {
1620			$overrides = array( 'test_form' => false, 'test_type' => false );
1621			$file = wp_handle_upload( $_FILES[$form], $overrides );
1622
1623			if ( isset( $file['error'] ) )
1624				wp_die( $file['error'] );
1625
1626			$this->filename = $_FILES[$form]['name'];
1627			$this->package = $file['file'];
1628
1629			// Construct the object array
1630			$object = array(
1631				'post_title' => $this->filename,
1632				'post_content' => $file['url'],
1633				'post_mime_type' => $file['type'],
1634				'guid' => $file['url'],
1635				'context' => 'upgrader',
1636				'post_status' => 'private'
1637			);
1638
1639			// Save the data
1640			$this->id = wp_insert_attachment( $object, $file['file'] );
1641
1642			// schedule a cleanup for 2 hours from now in case of failed install
1643			wp_schedule_single_event( time() + 7200, 'upgrader_scheduled_cleanup', array( $this->id ) );
1644
1645		} elseif ( is_numeric( $_GET[$urlholder] ) ) {
1646			// Numeric Package = previously uploaded file, see above.
1647			$this->id = (int) $_GET[$urlholder];
1648			$attachment = get_post( $this->id );
1649			if ( empty($attachment) )
1650				wp_die(__('Please select a file'));
1651
1652			$this->filename = $attachment->post_title;
1653			$this->package = get_attached_file( $attachment->ID );
1654		} else {
1655			// Else, It's set to something, Back compat for plugins using the old (pre-3.3) File_Uploader handler.
1656			if ( ! ( ( $uploads = wp_upload_dir() ) && false === $uploads['error'] ) )
1657				wp_die( $uploads['error'] );
1658
1659			$this->filename = $_GET[$urlholder];
1660			$this->package = $uploads['basedir'] . '/' . $this->filename;
1661		}
1662	}
1663
1664	function cleanup() {
1665		if ( $this->id )
1666			wp_delete_attachment( $this->id );
1667
1668		elseif ( file_exists( $this->package ) )
1669			return @unlink( $this->package );
1670
1671		return true;
1672	}
1673}