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Ignore:
Timestamp:
09/04/2013 06:34:38 AM (12 years ago)
Author:
dd32
Message:

Upgrader: Split the UI "skins" out from the main Upgrader file into a seperate file to reduce the length of the files. See #22704

File:
1 copied

Legend:

Unmodified
Added
Removed

  • trunk/src/wp-admin/includes/class-wp-upgrader-skins.php

    r25226 r25227  
    11<?php
    22/**
    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
     3 * The User Interface "Skins" for the WordPress File Upgrader
    84 *
    95 * @package WordPress
    … …  
    139
    1410/**
    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  */
    23 class 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['no_files'] = __('The package contains no files.');
    54         $this->strings['folder_exists'] = __('Destination folder already exists.');
    55         $this->strings['mkdir_failed'] = __('Could not create directory.');
    56         $this->strings['incompatible_archive'] = __('The package could not be installed.');
    57 
    58         $this->strings['maintenance_start'] = __('Enabling Maintenance mode&#8230;');
    59         $this->strings['maintenance_end'] = __('Disabling Maintenance mode&#8230;');
    60     }
    61 
    62     function fs_connect( $directories = array() ) {
    63         global $wp_filesystem;
    64 
    65         if ( false === ($credentials = $this->skin->request_filesystem_credentials()) )
    66             return false;
    67 
    68         if ( ! WP_Filesystem($credentials) ) {
    69             $error = true;
    70             if ( is_object($wp_filesystem) && $wp_filesystem->errors->get_error_code() )
    71                 $error = $wp_filesystem->errors;
    72             $this->skin->request_filesystem_credentials($error); //Failed to connect, Error and request again
    73             return false;
    74         }
    75 
    76         if ( ! is_object($wp_filesystem) )
    77             return new WP_Error('fs_unavailable', $this->strings['fs_unavailable'] );
    78 
    79         if ( is_wp_error($wp_filesystem->errors) && $wp_filesystem->errors->get_error_code() )
    80             return new WP_Error('fs_error', $this->strings['fs_error'], $wp_filesystem->errors);
    81 
    82         foreach ( (array)$directories as $dir ) {
    83             switch ( $dir ) {
    84                 case ABSPATH:
    85                     if ( ! $wp_filesystem->abspath() )
    86                         return new WP_Error('fs_no_root_dir', $this->strings['fs_no_root_dir']);
    87                     break;
    88                 case WP_CONTENT_DIR:
    89                     if ( ! $wp_filesystem->wp_content_dir() )
    90                         return new WP_Error('fs_no_content_dir', $this->strings['fs_no_content_dir']);
    91                     break;
    92                 case WP_PLUGIN_DIR:
    93                     if ( ! $wp_filesystem->wp_plugins_dir() )
    94                         return new WP_Error('fs_no_plugins_dir', $this->strings['fs_no_plugins_dir']);
    95                     break;
    96                 case get_theme_root():
    97                     if ( ! $wp_filesystem->wp_themes_dir() )
    98                         return new WP_Error('fs_no_themes_dir', $this->strings['fs_no_themes_dir']);
    99                     break;
    100                 default:
    101                     if ( ! $wp_filesystem->find_folder($dir) )
    102                         return new WP_Error( 'fs_no_folder', sprintf( $this->strings['fs_no_folder'], esc_html( basename( $dir ) ) ) );
    103                     break;
    104             }
    105         }
    106         return true;
    107     } //end fs_connect();
    108 
    109     function download_package($package) {
    110 
    111         if ( ! preg_match('!^(http|https|ftp)://!i', $package) && file_exists($package) ) //Local file or remote?
    112             return $package; //must be a local file..
    113 
    114         if ( empty($package) )
    115             return new WP_Error('no_package', $this->strings['no_package']);
    116 
    117         $this->skin->feedback('downloading_package', $package);
    118 
    119         $download_file = download_url($package);
    120 
    121         if ( is_wp_error($download_file) )
    122             return new WP_Error('download_failed', $this->strings['download_failed'], $download_file->get_error_message());
    123 
    124         return $download_file;
    125     }
    126 
    127     function unpack_package($package, $delete_package = true) {
    128         global $wp_filesystem;
    129 
    130         $this->skin->feedback('unpack_package');
    131 
    132         $upgrade_folder = $wp_filesystem->wp_content_dir() . 'upgrade/';
    133 
    134         //Clean up contents of upgrade directory beforehand.
    135         $upgrade_files = $wp_filesystem->dirlist($upgrade_folder);
    136         if ( !empty($upgrade_files) ) {
    137             foreach ( $upgrade_files as $file )
    138                 $wp_filesystem->delete($upgrade_folder . $file['name'], true);
    139         }
    140 
    141         //We need a working directory
    142         $working_dir = $upgrade_folder . basename($package, '.zip');
    143 
    144         // Clean up working directory
    145         if ( $wp_filesystem->is_dir($working_dir) )
    146             $wp_filesystem->delete($working_dir, true);
    147 
    148         // Unzip package to working directory
    149         $result = unzip_file($package, $working_dir); //TODO optimizations, Copy when Move/Rename would suffice?
    150 
    151         // Once extracted, delete the package if required.
    152         if ( $delete_package )
    153             unlink($package);
    154 
    155         if ( is_wp_error($result) ) {
    156             $wp_filesystem->delete($working_dir, true);
    157             if ( 'incompatible_archive' == $result->get_error_code() ) {
    158                 return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], $result->get_error_data() );
    159             }
    160             return $result;
    161         }
    162 
    163         return $working_dir;
    164     }
    165 
    166     function install_package($args = array()) {
    167         global $wp_filesystem, $wp_theme_directories;
    168 
    169         $defaults = array( 'source' => '', 'destination' => '', //Please always pass these
    170                         'clear_destination' => false, 'clear_working' => false,
    171                         'abort_if_destination_exists' => true,
    172                         'hook_extra' => array());
    173 
    174         $args = wp_parse_args($args, $defaults);
    175         extract($args);
    176 
    177         @set_time_limit( 300 );
    178 
    179         if ( empty($source) || empty($destination) )
    180             return new WP_Error('bad_request', $this->strings['bad_request']);
    181 
    182         $this->skin->feedback('installing_package');
    183 
    184         $res = apply_filters('upgrader_pre_install', true, $hook_extra);
    185         if ( is_wp_error($res) )
    186             return $res;
    187 
    188         //Retain the Original source and destinations
    189         $remote_source = $source;
    190         $local_destination = $destination;
    191 
    192         $source_files = array_keys( $wp_filesystem->dirlist($remote_source) );
    193         $remote_destination = $wp_filesystem->find_folder($local_destination);
    194 
    195         //Locate which directory to copy to the new folder, This is based on the actual folder holding the files.
    196         if ( 1 == count($source_files) && $wp_filesystem->is_dir( trailingslashit($source) . $source_files[0] . '/') ) //Only one folder? Then we want its contents.
    197             $source = trailingslashit($source) . trailingslashit($source_files[0]);
    198         elseif ( count($source_files) == 0 )
    199             return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], $this->strings['no_files'] ); //There are no files?
    200         else //It's only a single file, the upgrader will use the foldername of this file as the destination folder. foldername is based on zip filename.
    201             $source = trailingslashit($source);
    202 
    203         //Hook ability to change the source file location..
    204         $source = apply_filters('upgrader_source_selection', $source, $remote_source, $this);
    205         if ( is_wp_error($source) )
    206             return $source;
    207 
    208         //Has the source location changed? If so, we need a new source_files list.
    209         if ( $source !== $remote_source )
    210             $source_files = array_keys( $wp_filesystem->dirlist($source) );
    211 
    212         // Protection against deleting files in any important base directories.
    213         // Theme_Upgrader & Plugin_Upgrader also trigger this, as they pass the destination directory (WP_PLUGIN_DIR / wp-content/themes)
    214         // intending to copy the directory into the directory, whilst they pass the source as the actual files to copy.
    215         $protected_directories = array( ABSPATH, WP_CONTENT_DIR, WP_PLUGIN_DIR, WP_CONTENT_DIR . '/themes' );
    216         if ( is_array( $wp_theme_directories ) )
    217             $protected_directories = array_merge( $protected_directories, $wp_theme_directories );
    218         if ( in_array( $destination, $protected_directories ) ) {
    219             $remote_destination = trailingslashit($remote_destination) . trailingslashit(basename($source));
    220             $destination = trailingslashit($destination) . trailingslashit(basename($source));
    221         }
    222 
    223         if ( $clear_destination ) {
    224             //We're going to clear the destination if there's something there
    225             $this->skin->feedback('remove_old');
    226             $removed = true;
    227             if ( $wp_filesystem->exists($remote_destination) )
    228                 $removed = $wp_filesystem->delete($remote_destination, true);
    229             $removed = apply_filters('upgrader_clear_destination', $removed, $local_destination, $remote_destination, $hook_extra);
    230 
    231             if ( is_wp_error($removed) )
    232                 return $removed;
    233             else if ( ! $removed )
    234                 return new WP_Error('remove_old_failed', $this->strings['remove_old_failed']);
    235         } elseif ( $abort_if_destination_exists && $wp_filesystem->exists($remote_destination) ) {
    236             //If we're not clearing the destination folder and something exists there already, Bail.
    237             //But first check to see if there are actually any files in the folder.
    238             $_files = $wp_filesystem->dirlist($remote_destination);
    239             if ( ! empty($_files) ) {
    240                 $wp_filesystem->delete($remote_source, true); //Clear out the source files.
    241                 return new WP_Error('folder_exists', $this->strings['folder_exists'], $remote_destination );
    242             }
    243         }
    244 
    245         //Create destination if needed
    246         if ( !$wp_filesystem->exists($remote_destination) )
    247             if ( !$wp_filesystem->mkdir($remote_destination, FS_CHMOD_DIR) )
    248                 return new WP_Error('mkdir_failed', $this->strings['mkdir_failed'], $remote_destination);
    249 
    250         // Copy new version of item into place.
    251         $result = copy_dir($source, $remote_destination);
    252         if ( is_wp_error($result) ) {
    253             if ( $clear_working )
    254                 $wp_filesystem->delete($remote_source, true);
    255             return $result;
    256         }
    257 
    258         //Clear the Working folder?
    259         if ( $clear_working )
    260             $wp_filesystem->delete($remote_source, true);
    261 
    262         $destination_name = basename( str_replace($local_destination, '', $destination) );
    263         if ( '.' == $destination_name )
    264             $destination_name = '';
    265 
    266         $this->result = compact('local_source', 'source', 'source_name', 'source_files', 'destination', 'destination_name', 'local_destination', 'remote_destination', 'clear_destination', 'delete_source_dir');
    267 
    268         $res = apply_filters('upgrader_post_install', true, $hook_extra, $this->result);
    269         if ( is_wp_error($res) ) {
    270             $this->result = $res;
    271             return $res;
    272         }
    273 
    274         //Bombard the calling function will all the info which we've just used.
    275         return $this->result;
    276     }
    277 
    278     function run($options) {
    279 
    280         $defaults = array(  'package' => '', //Please always pass this.
    281                             'destination' => '', //And this
    282                             'clear_destination' => false,
    283                             'abort_if_destination_exists' => true, // Abort if the Destination directory exists, Pass clear_destination as false please
    284                             'clear_working' => true,
    285                             'is_multi' => false,
    286                             'hook_extra' => array() //Pass any extra $hook_extra args here, this will be passed to any hooked filters.
    287                         );
    288 
    289         $options = wp_parse_args($options, $defaults);
    290         extract($options);
    291 
    292         //Connect to the Filesystem first.
    293         $res = $this->fs_connect( array(WP_CONTENT_DIR, $destination) );
    294         if ( ! $res ) //Mainly for non-connected filesystem.
    295             return false;
    296 
    297         if ( is_wp_error($res) ) {
    298             $this->skin->error($res);
    299             return $res;
    300         }
    301 
    302         if ( !$is_multi ) // call $this->header separately if running multiple times
    303             $this->skin->header();
    304 
    305         $this->skin->before();
    306 
    307         //Download the package (Note, This just returns the filename of the file if the package is a local file)
    308         $download = $this->download_package( $package );
    309         if ( is_wp_error($download) ) {
    310             $this->skin->error($download);
    311             $this->skin->after();
    312             return $download;
    313         }
    314 
    315         $delete_package = ($download != $package); // Do not delete a "local" file
    316 
    317         //Unzips the file into a temporary directory
    318         $working_dir = $this->unpack_package( $download, $delete_package );
    319         if ( is_wp_error($working_dir) ) {
    320             $this->skin->error($working_dir);
    321             $this->skin->after();
    322             return $working_dir;
    323         }
    324 
    325         //With the given options, this installs it to the destination directory.
    326         $result = $this->install_package( array(
    327                                             'source' => $working_dir,
    328                                             'destination' => $destination,
    329                                             'clear_destination' => $clear_destination,
    330                                             'abort_if_destination_exists' => $abort_if_destination_exists,
    331                                             'clear_working' => $clear_working,
    332                                             'hook_extra' => $hook_extra
    333                                         ) );
    334         $this->skin->set_result($result);
    335         if ( is_wp_error($result) ) {
    336             $this->skin->error($result);
    337             $this->skin->feedback('process_failed');
    338         } else {
    339             //Install Succeeded
    340             $this->skin->feedback('process_success');
    341         }
    342         $this->skin->after();
    343 
    344         if ( !$is_multi )
    345             $this->skin->footer();
    346 
    347         return $result;
    348     }
    349 
    350     function maintenance_mode($enable = false) {
    351         global $wp_filesystem;
    352         $file = $wp_filesystem->abspath() . '.maintenance';
    353         if ( $enable ) {
    354             $this->skin->feedback('maintenance_start');
    355             // Create maintenance file to signal that we are upgrading
    356             $maintenance_string = '<?php $upgrading = ' . time() . '; ?>';
    357             $wp_filesystem->delete($file);
    358             $wp_filesystem->put_contents($file, $maintenance_string, FS_CHMOD_FILE);
    359         } else if ( !$enable && $wp_filesystem->exists($file) ) {
    360             $this->skin->feedback('maintenance_end');
    361             $wp_filesystem->delete($file);
    362         }
    363     }
    364 
    365 }
    366 
    367 /**
    368  * Plugin Upgrader class for WordPress Plugins, It is designed to upgrade/install plugins from a local zip, remote zip URL, or uploaded zip file.
    369  *
    370  * @TODO More Detailed docs, for methods as well.
    371  *
    372  * @package WordPress
    373  * @subpackage Upgrader
    374  * @since 2.8.0
    375  */
    376 class Plugin_Upgrader extends WP_Upgrader {
    377 
    378     var $result;
    379     var $bulk = false;
    380     var $show_before = '';
    381 
    382     function upgrade_strings() {
    383         $this->strings['up_to_date'] = __('The plugin is at the latest version.');
    384         $this->strings['no_package'] = __('Update package not available.');
    385         $this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>&#8230;');
    386         $this->strings['unpack_package'] = __('Unpacking the update&#8230;');
    387         $this->strings['remove_old'] = __('Removing the old version of the plugin&#8230;');
    388         $this->strings['remove_old_failed'] = __('Could not remove the old plugin.');
    389         $this->strings['process_failed'] = __('Plugin update failed.');
    390         $this->strings['process_success'] = __('Plugin updated successfully.');
    391     }
    392 
    393     function install_strings() {
    394         $this->strings['no_package'] = __('Install package not available.');
    395         $this->strings['downloading_package'] = __('Downloading install package from <span class="code">%s</span>&#8230;');
    396         $this->strings['unpack_package'] = __('Unpacking the package&#8230;');
    397         $this->strings['installing_package'] = __('Installing the plugin&#8230;');
    398         $this->strings['no_files'] = __('The plugin contains no files.');
    399         $this->strings['process_failed'] = __('Plugin install failed.');
    400         $this->strings['process_success'] = __('Plugin installed successfully.');
    401     }
    402 
    403     function install($package) {
    404 
    405         $this->init();
    406         $this->install_strings();
    407 
    408         add_filter('upgrader_source_selection', array(&$this, 'check_package') );
    409 
    410         $this->run(array(
    411                     'package' => $package,
    412                     'destination' => WP_PLUGIN_DIR,
    413                     'clear_destination' => false, //Do not overwrite files.
    414                     'clear_working' => true,
    415                     'hook_extra' => array()
    416                     ));
    417 
    418         remove_filter('upgrader_source_selection', array(&$this, 'check_package') );
    419 
    420         if ( ! $this->result || is_wp_error($this->result) )
    421             return $this->result;
    422 
    423         // Force refresh of plugin update information
    424         delete_site_transient('update_plugins');
    425         wp_cache_delete( 'plugins', 'plugins' );
    426         do_action( 'upgrader_process_complete', $this, array( 'action' => 'install', 'type' => 'plugin' ), $package );
    427 
    428         return true;
    429     }
    430 
    431     function upgrade($plugin) {
    432 
    433         $this->init();
    434         $this->upgrade_strings();
    435 
    436         $current = get_site_transient( 'update_plugins' );
    437         if ( !isset( $current->response[ $plugin ] ) ) {
    438             $this->skin->before();
    439             $this->skin->set_result(false);
    440             $this->skin->error('up_to_date');
    441             $this->skin->after();
    442             return false;
    443         }
    444 
    445         // Get the URL to the zip file
    446         $r = $current->response[ $plugin ];
    447 
    448         add_filter('upgrader_pre_install', array(&$this, 'deactivate_plugin_before_upgrade'), 10, 2);
    449         add_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'), 10, 4);
    450         //'source_selection' => array(&$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.
    451 
    452         $this->run(array(
    453                     'package' => $r->package,
    454                     'destination' => WP_PLUGIN_DIR,
    455                     'clear_destination' => true,
    456                     'clear_working' => true,
    457                     'hook_extra' => array(
    458                                 'plugin' => $plugin
    459                     )
    460                 ));
    461 
    462         // Cleanup our hooks, in case something else does a upgrade on this connection.
    463         remove_filter('upgrader_pre_install', array(&$this, 'deactivate_plugin_before_upgrade'));
    464         remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'));
    465 
    466         if ( ! $this->result || is_wp_error($this->result) )
    467             return $this->result;
    468 
    469         // Force refresh of plugin update information
    470         delete_site_transient('update_plugins');
    471         wp_cache_delete( 'plugins', 'plugins' );
    472         do_action( 'upgrader_process_complete', $this, array( 'action' => 'update', 'type' => 'plugin' ), $plugin );
    473 
    474         return true;
    475     }
    476 
    477     function bulk_upgrade($plugins) {
    478 
    479         $this->init();
    480         $this->bulk = true;
    481         $this->upgrade_strings();
    482 
    483         $current = get_site_transient( 'update_plugins' );
    484 
    485         add_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'), 10, 4);
    486 
    487         $this->skin->header();
    488 
    489         // Connect to the Filesystem first.
    490         $res = $this->fs_connect( array(WP_CONTENT_DIR, WP_PLUGIN_DIR) );
    491         if ( ! $res ) {
    492             $this->skin->footer();
    493             return false;
    494         }
    495 
    496         $this->skin->bulk_header();
    497 
    498         // Only start maintenance mode if:
    499         // - running Multisite and there are one or more plugins specified, OR
    500         // - a plugin with an update available is currently active.
    501         // @TODO: For multisite, maintenance mode should only kick in for individual sites if at all possible.
    502         $maintenance = ( is_multisite() && ! empty( $plugins ) );
    503         foreach ( $plugins as $plugin )
    504             $maintenance = $maintenance || ( is_plugin_active( $plugin ) && isset( $current->response[ $plugin] ) );
    505         if ( $maintenance )
    506             $this->maintenance_mode(true);
    507 
    508         $results = array();
    509 
    510         $this->update_count = count($plugins);
    511         $this->update_current = 0;
    512         foreach ( $plugins as $plugin ) {
    513             $this->update_current++;
    514             $this->skin->plugin_info = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin, false, true);
    515 
    516             if ( !isset( $current->response[ $plugin ] ) ) {
    517                 $this->skin->set_result(true);
    518                 $this->skin->before();
    519                 $this->skin->feedback('up_to_date');
    520                 $this->skin->after();
    521                 $results[$plugin] = true;
    522                 continue;
    523             }
    524 
    525             // Get the URL to the zip file
    526             $r = $current->response[ $plugin ];
    527 
    528             $this->skin->plugin_active = is_plugin_active($plugin);
    529 
    530             $result = $this->run(array(
    531                         'package' => $r->package,
    532                         'destination' => WP_PLUGIN_DIR,
    533                         'clear_destination' => true,
    534                         'clear_working' => true,
    535                         'is_multi' => true,
    536                         'hook_extra' => array(
    537                                     'plugin' => $plugin
    538                         )
    539                     ));
    540 
    541             $results[$plugin] = $this->result;
    542 
    543             // Prevent credentials auth screen from displaying multiple times
    544             if ( false === $result )
    545                 break;
    546         } //end foreach $plugins
    547 
    548         $this->maintenance_mode(false);
    549 
    550         $this->skin->bulk_footer();
    551 
    552         $this->skin->footer();
    553 
    554         // Cleanup our hooks, in case something else does a upgrade on this connection.
    555         remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'));
    556 
    557         // Force refresh of plugin update information
    558         delete_site_transient('update_plugins');
    559         wp_cache_delete( 'plugins', 'plugins' );
    560         do_action( 'upgrader_process_complete', $this, array( 'action' => 'update', 'type' => 'plugin', 'bulk' => true ), $plugins );
    561 
    562         return $results;
    563     }
    564 
    565     function check_package($source) {
    566         global $wp_filesystem;
    567 
    568         if ( is_wp_error($source) )
    569             return $source;
    570 
    571         $working_directory = str_replace( $wp_filesystem->wp_content_dir(), trailingslashit(WP_CONTENT_DIR), $source);
    572         if ( ! is_dir($working_directory) ) // Sanity check, if the above fails, lets not prevent installation.
    573             return $source;
    574 
    575         // Check the folder contains at least 1 valid plugin.
    576         $plugins_found = false;
    577         foreach ( glob( $working_directory . '*.php' ) as $file ) {
    578             $info = get_plugin_data($file, false, false);
    579             if ( !empty( $info['Name'] ) ) {
    580                 $plugins_found = true;
    581                 break;
    582             }
    583         }
    584 
    585         if ( ! $plugins_found )
    586             return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __('No valid plugins were found.') );
    587 
    588         return $source;
    589     }
    590 
    591     //return plugin info.
    592     function plugin_info() {
    593         if ( ! is_array($this->result) )
    594             return false;
    595         if ( empty($this->result['destination_name']) )
    596             return false;
    597 
    598         $plugin = get_plugins('/' . $this->result['destination_name']); //Ensure to pass with leading slash
    599         if ( empty($plugin) )
    600             return false;
    601 
    602         $pluginfiles = array_keys($plugin); //Assume the requested plugin is the first in the list
    603 
    604         return $this->result['destination_name'] . '/' . $pluginfiles[0];
    605     }
    606 
    607     //Hooked to pre_install
    608     function deactivate_plugin_before_upgrade($return, $plugin) {
    609 
    610         if ( is_wp_error($return) ) //Bypass.
    611             return $return;
    612 
    613         $plugin = isset($plugin['plugin']) ? $plugin['plugin'] : '';
    614         if ( empty($plugin) )
    615             return new WP_Error('bad_request', $this->strings['bad_request']);
    616 
    617         if ( is_plugin_active($plugin) ) {
    618             //Deactivate the plugin silently, Prevent deactivation hooks from running.
    619             deactivate_plugins($plugin, true);
    620         }
    621     }
    622 
    623     //Hooked to upgrade_clear_destination
    624     function delete_old_plugin($removed, $local_destination, $remote_destination, $plugin) {
    625         global $wp_filesystem;
    626 
    627         if ( is_wp_error($removed) )
    628             return $removed; //Pass errors through.
    629 
    630         $plugin = isset($plugin['plugin']) ? $plugin['plugin'] : '';
    631         if ( empty($plugin) )
    632             return new WP_Error('bad_request', $this->strings['bad_request']);
    633 
    634         $plugins_dir = $wp_filesystem->wp_plugins_dir();
    635         $this_plugin_dir = trailingslashit( dirname($plugins_dir . $plugin) );
    636 
    637         if ( ! $wp_filesystem->exists($this_plugin_dir) ) //If it's already vanished.
    638             return $removed;
    639 
    640         // If plugin is in its own directory, recursively delete the directory.
    641         if ( strpos($plugin, '/') && $this_plugin_dir != $plugins_dir ) //base check on if plugin includes directory separator AND that it's not the root plugin folder
    642             $deleted = $wp_filesystem->delete($this_plugin_dir, true);
    643         else
    644             $deleted = $wp_filesystem->delete($plugins_dir . $plugin);
    645 
    646         if ( ! $deleted )
    647             return new WP_Error('remove_old_failed', $this->strings['remove_old_failed']);
    648 
    649         return true;
    650     }
    651 }
    652 
    653 /**
    654  * Theme Upgrader class for WordPress Themes, It is designed to upgrade/install themes from a local zip, remote zip URL, or uploaded zip file.
    655  *
    656  * @TODO More Detailed docs, for methods as well.
    657  *
    658  * @package WordPress
    659  * @subpackage Upgrader
    660  * @since 2.8.0
    661  */
    662 class Theme_Upgrader extends WP_Upgrader {
    663 
    664     var $result;
    665     var $bulk = false;
    666 
    667     function upgrade_strings() {
    668         $this->strings['up_to_date'] = __('The theme is at the latest version.');
    669         $this->strings['no_package'] = __('Update package not available.');
    670         $this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>&#8230;');
    671         $this->strings['unpack_package'] = __('Unpacking the update&#8230;');
    672         $this->strings['remove_old'] = __('Removing the old version of the theme&#8230;');
    673         $this->strings['remove_old_failed'] = __('Could not remove the old theme.');
    674         $this->strings['process_failed'] = __('Theme update failed.');
    675         $this->strings['process_success'] = __('Theme updated successfully.');
    676     }
    677 
    678     function install_strings() {
    679         $this->strings['no_package'] = __('Install package not available.');
    680         $this->strings['downloading_package'] = __('Downloading install package from <span class="code">%s</span>&#8230;');
    681         $this->strings['unpack_package'] = __('Unpacking the package&#8230;');
    682         $this->strings['installing_package'] = __('Installing the theme&#8230;');
    683         $this->strings['no_files'] = __('The theme contains no files.');
    684         $this->strings['process_failed'] = __('Theme install failed.');
    685         $this->strings['process_success'] = __('Theme installed successfully.');
    686         /* translators: 1: theme name, 2: version */
    687         $this->strings['process_success_specific'] = __('Successfully installed the theme <strong>%1$s %2$s</strong>.');
    688         $this->strings['parent_theme_search'] = __('This theme requires a parent theme. Checking if it is installed&#8230;');
    689         /* translators: 1: theme name, 2: version */
    690         $this->strings['parent_theme_prepare_install'] = __('Preparing to install <strong>%1$s %2$s</strong>&#8230;');
    691         /* translators: 1: theme name, 2: version */
    692         $this->strings['parent_theme_currently_installed'] = __('The parent theme, <strong>%1$s %2$s</strong>, is currently installed.');
    693         /* translators: 1: theme name, 2: version */
    694         $this->strings['parent_theme_install_success'] = __('Successfully installed the parent theme, <strong>%1$s %2$s</strong>.');
    695         $this->strings['parent_theme_not_found'] = __('<strong>The parent theme could not be found.</strong> You will need to install the parent theme, <strong>%s</strong>, before you can use this child theme.');
    696     }
    697 
    698     function check_parent_theme_filter($install_result, $hook_extra, $child_result) {
    699         // Check to see if we need to install a parent theme
    700         $theme_info = $this->theme_info();
    701 
    702         if ( ! $theme_info->parent() )
    703             return $install_result;
    704 
    705         $this->skin->feedback( 'parent_theme_search' );
    706 
    707         if ( ! $theme_info->parent()->errors() ) {
    708             $this->skin->feedback( 'parent_theme_currently_installed', $theme_info->parent()->display('Name'), $theme_info->parent()->display('Version') );
    709             // We already have the theme, fall through.
    710             return $install_result;
    711         }
    712 
    713         // We don't have the parent theme, lets install it
    714         $api = themes_api('theme_information', array('slug' => $theme_info->get('Template'), 'fields' => array('sections' => false, 'tags' => false) ) ); //Save on a bit of bandwidth.
    715 
    716         if ( ! $api || is_wp_error($api) ) {
    717             $this->skin->feedback( 'parent_theme_not_found', $theme_info->get('Template') );
    718             // Don't show activate or preview actions after install
    719             add_filter('install_theme_complete_actions', array(&$this, 'hide_activate_preview_actions') );
    720             return $install_result;
    721         }
    722 
    723         // Backup required data we're going to override:
    724         $child_api = $this->skin->api;
    725         $child_success_message = $this->strings['process_success'];
    726 
    727         // Override them
    728         $this->skin->api = $api;
    729         $this->strings['process_success_specific'] = $this->strings['parent_theme_install_success'];//, $api->name, $api->version);
    730 
    731         $this->skin->feedback('parent_theme_prepare_install', $api->name, $api->version);
    732 
    733         add_filter('install_theme_complete_actions', '__return_false', 999); // Don't show any actions after installing the theme.
    734 
    735         // Install the parent theme
    736         $parent_result = $this->run( array(
    737             'package' => $api->download_link,
    738             'destination' => get_theme_root(),
    739             'clear_destination' => false, //Do not overwrite files.
    740             'clear_working' => true
    741         ) );
    742 
    743         if ( is_wp_error($parent_result) )
    744             add_filter('install_theme_complete_actions', array(&$this, 'hide_activate_preview_actions') );
    745 
    746         // Start cleaning up after the parents installation
    747         remove_filter('install_theme_complete_actions', '__return_false', 999);
    748 
    749         // Reset child's result and data
    750         $this->result = $child_result;
    751         $this->skin->api = $child_api;
    752         $this->strings['process_success'] = $child_success_message;
    753 
    754         return $install_result;
    755     }
    756 
    757     function hide_activate_preview_actions($actions) {
    758         unset($actions['activate'], $actions['preview']);
    759         return $actions;
    760     }
    761 
    762     function install($package) {
    763 
    764         $this->init();
    765         $this->install_strings();
    766 
    767         add_filter('upgrader_source_selection', array(&$this, 'check_package') );
    768         add_filter('upgrader_post_install', array(&$this, 'check_parent_theme_filter'), 10, 3);
    769 
    770         $options = array(
    771             'package' => $package,
    772             'destination' => get_theme_root(),
    773             'clear_destination' => false, //Do not overwrite files.
    774             'clear_working' => true
    775         );
    776 
    777         $this->run($options);
    778 
    779         remove_filter('upgrader_source_selection', array(&$this, 'check_package') );
    780         remove_filter('upgrader_post_install', array(&$this, 'check_parent_theme_filter'));
    781 
    782         if ( ! $this->result || is_wp_error($this->result) )
    783             return $this->result;
    784 
    785         // Force refresh of theme update information
    786         wp_clean_themes_cache();
    787         do_action( 'upgrader_process_complete', $this, array( 'action' => 'install', 'type' => 'theme' ), $package );
    788 
    789         return true;
    790     }
    791 
    792     function upgrade($theme) {
    793 
    794         $this->init();
    795         $this->upgrade_strings();
    796 
    797         // Is an update available?
    798         $current = get_site_transient( 'update_themes' );
    799         if ( !isset( $current->response[ $theme ] ) ) {
    800             $this->skin->before();
    801             $this->skin->set_result(false);
    802             $this->skin->error('up_to_date');
    803             $this->skin->after();
    804             return false;
    805         }
    806 
    807         $r = $current->response[ $theme ];
    808 
    809         add_filter('upgrader_pre_install', array(&$this, 'current_before'), 10, 2);
    810         add_filter('upgrader_post_install', array(&$this, 'current_after'), 10, 2);
    811         add_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'), 10, 4);
    812 
    813         $options = array(
    814             'package' => $r['package'],
    815             'destination' => get_theme_root( $theme ),
    816             'clear_destination' => true,
    817             'clear_working' => true,
    818             'hook_extra' => array(
    819                 'theme' => $theme
    820             ),
    821         );
    822 
    823         $this->run($options);
    824 
    825         remove_filter('upgrader_pre_install', array(&$this, 'current_before'));
    826         remove_filter('upgrader_post_install', array(&$this, 'current_after'));
    827         remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'));
    828 
    829         if ( ! $this->result || is_wp_error($this->result) )
    830             return $this->result;
    831 
    832         // Force refresh of theme update information
    833         wp_clean_themes_cache();
    834         do_action( 'upgrader_process_complete', $this, array( 'action' => 'update', 'type' => 'theme' ), $theme );
    835 
    836         return true;
    837     }
    838 
    839     function bulk_upgrade($themes) {
    840 
    841         $this->init();
    842         $this->bulk = true;
    843         $this->upgrade_strings();
    844 
    845         $current = get_site_transient( 'update_themes' );
    846 
    847         add_filter('upgrader_pre_install', array(&$this, 'current_before'), 10, 2);
    848         add_filter('upgrader_post_install', array(&$this, 'current_after'), 10, 2);
    849         add_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'), 10, 4);
    850 
    851         $this->skin->header();
    852 
    853         // Connect to the Filesystem first.
    854         $res = $this->fs_connect( array(WP_CONTENT_DIR) );
    855         if ( ! $res ) {
    856             $this->skin->footer();
    857             return false;
    858         }
    859 
    860         $this->skin->bulk_header();
    861 
    862         // Only start maintenance mode if:
    863         // - running Multisite and there are one or more themes specified, OR
    864         // - a theme with an update available is currently in use.
    865         // @TODO: For multisite, maintenance mode should only kick in for individual sites if at all possible.
    866         $maintenance = ( is_multisite() && ! empty( $themes ) );
    867         foreach ( $themes as $theme )
    868             $maintenance = $maintenance || $theme == get_stylesheet() || $theme == get_template();
    869         if ( $maintenance )
    870             $this->maintenance_mode(true);
    871 
    872         $results = array();
    873 
    874         $this->update_count = count($themes);
    875         $this->update_current = 0;
    876         foreach ( $themes as $theme ) {
    877             $this->update_current++;
    878 
    879             $this->skin->theme_info = $this->theme_info($theme);
    880 
    881             if ( !isset( $current->response[ $theme ] ) ) {
    882                 $this->skin->set_result(true);
    883                 $this->skin->before();
    884                 $this->skin->feedback('up_to_date');
    885                 $this->skin->after();
    886                 $results[$theme] = true;
    887                 continue;
    888             }
    889 
    890             // Get the URL to the zip file
    891             $r = $current->response[ $theme ];
    892 
    893             $options = array(
    894                 'package' => $r['package'],
    895                 'destination' => get_theme_root( $theme ),
    896                 'clear_destination' => true,
    897                 'clear_working' => true,
    898                 'hook_extra' => array(
    899                     'theme' => $theme
    900                 ),
    901             );
    902 
    903             $result = $this->run($options);
    904 
    905             $results[$theme] = $this->result;
    906 
    907             // Prevent credentials auth screen from displaying multiple times
    908             if ( false === $result )
    909                 break;
    910         } //end foreach $plugins
    911 
    912         $this->maintenance_mode(false);
    913 
    914         $this->skin->bulk_footer();
    915 
    916         $this->skin->footer();
    917 
    918         // Cleanup our hooks, in case something else does a upgrade on this connection.
    919         remove_filter('upgrader_pre_install', array(&$this, 'current_before'));
    920         remove_filter('upgrader_post_install', array(&$this, 'current_after'));
    921         remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'));
    922 
    923         // Force refresh of theme update information
    924         wp_clean_themes_cache();
    925         do_action( 'upgrader_process_complete', $this, array( 'action' => 'update', 'type' => 'theme', 'bulk' => true ), $themes );
    926 
    927         return $results;
    928     }
    929 
    930     function check_package($source) {
    931         global $wp_filesystem;
    932 
    933         if ( is_wp_error($source) )
    934             return $source;
    935 
    936         // Check the folder contains a valid theme
    937         $working_directory = str_replace( $wp_filesystem->wp_content_dir(), trailingslashit(WP_CONTENT_DIR), $source);
    938         if ( ! is_dir($working_directory) ) // Sanity check, if the above fails, lets not prevent installation.
    939             return $source;
    940 
    941         // A proper archive should have a style.css file in the single subdirectory
    942         if ( ! file_exists( $working_directory . 'style.css' ) )
    943             return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __('The theme is missing the <code>style.css</code> stylesheet.') );
    944 
    945         $info = get_file_data( $working_directory . 'style.css', array( 'Name' => 'Theme Name', 'Template' => 'Template' ) );
    946 
    947         if ( empty( $info['Name'] ) )
    948             return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __("The <code>style.css</code> stylesheet doesn't contain a valid theme header.") );
    949 
    950         // If it's not a child theme, it must have at least an index.php to be legit.
    951         if ( empty( $info['Template'] ) && ! file_exists( $working_directory . 'index.php' ) )
    952             return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __('The theme is missing the <code>index.php</code> file.') );
    953 
    954         return $source;
    955     }
    956 
    957     function current_before($return, $theme) {
    958 
    959         if ( is_wp_error($return) )
    960             return $return;
    961 
    962         $theme = isset($theme['theme']) ? $theme['theme'] : '';
    963 
    964         if ( $theme != get_stylesheet() ) //If not current
    965             return $return;
    966         //Change to maintenance mode now.
    967         if ( ! $this->bulk )
    968             $this->maintenance_mode(true);
    969 
    970         return $return;
    971     }
    972 
    973     function current_after($return, $theme) {
    974         if ( is_wp_error($return) )
    975             return $return;
    976 
    977         $theme = isset($theme['theme']) ? $theme['theme'] : '';
    978 
    979         if ( $theme != get_stylesheet() ) // If not current
    980             return $return;
    981 
    982         // Ensure stylesheet name hasn't changed after the upgrade:
    983         if ( $theme == get_stylesheet() && $theme != $this->result['destination_name'] ) {
    984             wp_clean_themes_cache();
    985             $stylesheet = $this->result['destination_name'];
    986             switch_theme( $stylesheet );
    987         }
    988 
    989         //Time to remove maintenance mode
    990         if ( ! $this->bulk )
    991             $this->maintenance_mode(false);
    992         return $return;
    993     }
    994 
    995     function delete_old_theme( $removed, $local_destination, $remote_destination, $theme ) {
    996         global $wp_filesystem;
    997 
    998         if ( is_wp_error( $removed ) )
    999             return $removed; // Pass errors through.
    1000 
    1001         if ( ! isset( $theme['theme'] ) )
    1002             return $removed;
    1003 
    1004         $theme = $theme['theme'];
    1005         $themes_dir = trailingslashit( $wp_filesystem->wp_themes_dir( $theme ) );
    1006         if ( $wp_filesystem->exists( $themes_dir . $theme ) ) {
    1007             if ( ! $wp_filesystem->delete( $themes_dir . $theme, true ) )
    1008                 return false;
    1009         }
    1010 
    1011         return true;
    1012     }
    1013 
    1014     function theme_info($theme = null) {
    1015 
    1016         if ( empty($theme) ) {
    1017             if ( !empty($this->result['destination_name']) )
    1018                 $theme = $this->result['destination_name'];
    1019             else
    1020                 return false;
    1021         }
    1022         return wp_get_theme( $theme );
    1023     }
    1024 
    1025 }
    1026 
    1027 /**
    1028  * Core Upgrader class for WordPress. It allows for WordPress to upgrade itself in combination with the wp-admin/includes/update-core.php file
    1029  *
    1030  * @TODO More Detailed docs, for methods as well.
    1031  *
    1032  * @package WordPress
    1033  * @subpackage Upgrader
    1034  * @since 2.8.0
    1035  */
    1036 class Core_Upgrader extends WP_Upgrader {
    1037 
    1038     function upgrade_strings() {
    1039         $this->strings['up_to_date'] = __('WordPress is at the latest version.');
    1040         $this->strings['no_package'] = __('Update package not available.');
    1041         $this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>&#8230;');
    1042         $this->strings['unpack_package'] = __('Unpacking the update&#8230;');
    1043         $this->strings['copy_failed'] = __('Could not copy files.');
    1044         $this->strings['copy_failed_space'] = __('Could not copy files. You may have run out of disk space.' );
    1045     }
    1046 
    1047     function upgrade($current) {
    1048         global $wp_filesystem, $wp_version;
    1049 
    1050         $this->init();
    1051         $this->upgrade_strings();
    1052 
    1053         // Is an update available?
    1054         if ( !isset( $current->response ) || $current->response == 'latest' )
    1055             return new WP_Error('up_to_date', $this->strings['up_to_date']);
    1056 
    1057         $res = $this->fs_connect( array(ABSPATH, WP_CONTENT_DIR) );
    1058         if ( is_wp_error($res) )
    1059             return $res;
    1060 
    1061         $wp_dir = trailingslashit($wp_filesystem->abspath());
    1062 
    1063         // If partial update is returned from the API, use that, unless we're doing a reinstall.
    1064         // If we cross the new_bundled version number, then use the new_bundled zip.
    1065         // Don't though if the constant is set to skip bundled items.
    1066         // If the API returns a no_content zip, go with it. Finally, default to the full zip.
    1067         if ( $current->packages->partial && 'reinstall' != $current->response && $wp_version == $current->partial_version )
    1068             $to_download = 'partial';
    1069         elseif ( $current->packages->new_bundled && version_compare( $wp_version, $current->new_bundled, '<' )
    1070             && ( ! defined( 'CORE_UPGRADE_SKIP_NEW_BUNDLED' ) || ! CORE_UPGRADE_SKIP_NEW_BUNDLED ) )
    1071             $to_download = 'new_bundled';
    1072         elseif ( $current->packages->no_content )
    1073             $to_download = 'no_content';
    1074         else
    1075             $to_download = 'full';
    1076 
    1077         $download = $this->download_package( $current->packages->$to_download );
    1078         if ( is_wp_error($download) )
    1079             return $download;
    1080 
    1081         $working_dir = $this->unpack_package( $download );
    1082         if ( is_wp_error($working_dir) )
    1083             return $working_dir;
    1084 
    1085         // Copy update-core.php from the new version into place.
    1086         if ( !$wp_filesystem->copy($working_dir . '/wordpress/wp-admin/includes/update-core.php', $wp_dir . 'wp-admin/includes/update-core.php', true) ) {
    1087             $wp_filesystem->delete($working_dir, true);
    1088             return new WP_Error('copy_failed', $this->strings['copy_failed']);
    1089         }
    1090         $wp_filesystem->chmod($wp_dir . 'wp-admin/includes/update-core.php', FS_CHMOD_FILE);
    1091 
    1092         require(ABSPATH . 'wp-admin/includes/update-core.php');
    1093 
    1094         if ( ! function_exists( 'update_core' ) )
    1095             return new WP_Error( 'copy_failed_space', $this->strings['copy_failed_space'] );
    1096 
    1097         $result = update_core( $working_dir, $wp_dir );
    1098         do_action( 'upgrader_process_complete', $this, array( 'action' => 'update', 'type' => 'core' ), $result );
    1099         return $result;
    1100     }
    1101 
    1102 }
    1103 
    1104 /**
    110511 * Generic Skin for the WordPress Upgrader classes. This skin is designed to be extended for specific purposes.
    1106  *
    1107  * @TODO More Detailed docs, for methods as well.
    110812 *
    110913 * @package WordPress
    … …  
    119599 * Plugin Upgrader Skin for WordPress Plugin Upgrades.
    1196100 *
    1197  * @TODO More Detailed docs, for methods as well.
    1198  *
    1199101 * @package WordPress
    1200102 * @subpackage Upgrader
    … …  
    1433335 * Plugin Installer Skin for WordPress Plugin Installer.
    1434336 *
    1435  * @TODO More Detailed docs, for methods as well.
    1436  *
    1437337 * @package WordPress
    1438338 * @subpackage Upgrader
    … …  
    1498398 * Theme Installer Skin for the WordPress Theme Installer.
    1499399 *
    1500  * @TODO More Detailed docs, for methods as well.
    1501  *
    1502400 * @package WordPress
    1503401 * @subpackage Upgrader
    … …  
    1572470/**
    1573471 * Theme Upgrader Skin for WordPress Theme Upgrades.
    1574  *
    1575  * @TODO More Detailed docs, for methods as well.
    1576472 *
    1577473 * @package WordPress
    … …  
    1632528    }
    1633529}
    1634 
    1635 /**
    1636  * Upgrade Skin helper for File uploads. This class handles the upload process and passes it as if it's a local file to the Upgrade/Installer functions.
    1637  *
    1638  * @TODO More Detailed docs, for methods as well.
    1639  *
    1640  * @package WordPress
    1641  * @subpackage Upgrader
    1642  * @since 2.8.0
    1643  */
    1644 class File_Upload_Upgrader {
    1645     var $package;
    1646     var $filename;
    1647     var $id = 0;
    1648 
    1649     function __construct($form, $urlholder) {
    1650 
    1651         if ( empty($_FILES[$form]['name']) && empty($_GET[$urlholder]) )
    1652             wp_die(__('Please select a file'));
    1653 
    1654         //Handle a newly uploaded file, Else assume it's already been uploaded
    1655         if ( ! empty($_FILES) ) {
    1656             $overrides = array( 'test_form' => false, 'test_type' => false );
    1657             $file = wp_handle_upload( $_FILES[$form], $overrides );
    1658 
    1659             if ( isset( $file['error'] ) )
    1660                 wp_die( $file['error'] );
    1661 
    1662             $this->filename = $_FILES[$form]['name'];
    1663             $this->package = $file['file'];
    1664 
    1665             // Construct the object array
    1666             $object = array(
    1667                 'post_title' => $this->filename,
    1668                 'post_content' => $file['url'],
    1669                 'post_mime_type' => $file['type'],
    1670                 'guid' => $file['url'],
    1671                 'context' => 'upgrader',
    1672                 'post_status' => 'private'
    1673             );
    1674 
    1675             // Save the data
    1676             $this->id = wp_insert_attachment( $object, $file['file'] );
    1677 
    1678             // schedule a cleanup for 2 hours from now in case of failed install
    1679             wp_schedule_single_event( time() + 7200, 'upgrader_scheduled_cleanup', array( $this->id ) );
    1680 
    1681         } elseif ( is_numeric( $_GET[$urlholder] ) ) {
    1682             // Numeric Package = previously uploaded file, see above.
    1683             $this->id = (int) $_GET[$urlholder];
    1684             $attachment = get_post( $this->id );
    1685             if ( empty($attachment) )
    1686                 wp_die(__('Please select a file'));
    1687 
    1688             $this->filename = $attachment->post_title;
    1689             $this->package = get_attached_file( $attachment->ID );
    1690         } else {
    1691             // Else, It's set to something, Back compat for plugins using the old (pre-3.3) File_Uploader handler.
    1692             if ( ! ( ( $uploads = wp_upload_dir() ) && false === $uploads['error'] ) )
    1693                 wp_die( $uploads['error'] );
    1694 
    1695             $this->filename = $_GET[$urlholder];
    1696             $this->package = $uploads['basedir'] . '/' . $this->filename;
    1697         }
    1698     }
    1699 
    1700     function cleanup() {
    1701         if ( $this->id )
    1702             wp_delete_attachment( $this->id );
    1703 
    1704         elseif ( file_exists( $this->package ) )
    1705             return @unlink( $this->package );
    1706 
    1707         return true;
    1708     }
    1709 }
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