WordPress 3.4
[autoinstalls/wordpress.git] / wp-admin / includes / class-wp-upgrader.php
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  */
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['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  */
366 class 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(false);
500                                 $this->skin->before();
501                                 $this->skin->error('up_to_date');
502                                 $this->skin->after();
503                                 $results[$plugin] = false;
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  */
643 class 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                 delete_site_transient('update_themes');
767                 search_theme_directories( true );
768                 foreach ( wp_get_themes() as $theme )
769                         $theme->cache_delete();
770
771                 return true;
772         }
773
774         function upgrade($theme) {
775
776                 $this->init();
777                 $this->upgrade_strings();
778
779                 // Is an update available?
780                 $current = get_site_transient( 'update_themes' );
781                 if ( !isset( $current->response[ $theme ] ) ) {
782                         $this->skin->before();
783                         $this->skin->set_result(false);
784                         $this->skin->error('up_to_date');
785                         $this->skin->after();
786                         return false;
787                 }
788
789                 $r = $current->response[ $theme ];
790
791                 add_filter('upgrader_pre_install', array(&$this, 'current_before'), 10, 2);
792                 add_filter('upgrader_post_install', array(&$this, 'current_after'), 10, 2);
793                 add_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'), 10, 4);
794
795                 $options = array(
796                                                 'package' => $r['package'],
797                                                 'destination' => WP_CONTENT_DIR . '/themes',
798                                                 'clear_destination' => true,
799                                                 'clear_working' => true,
800                                                 'hook_extra' => array(
801                                                                                         'theme' => $theme
802                                                                                         )
803                                                 );
804
805                 $this->run($options);
806
807                 remove_filter('upgrader_pre_install', array(&$this, 'current_before'), 10, 2);
808                 remove_filter('upgrader_post_install', array(&$this, 'current_after'), 10, 2);
809                 remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'), 10, 4);
810
811                 if ( ! $this->result || is_wp_error($this->result) )
812                         return $this->result;
813
814                 // Force refresh of theme update information
815                 delete_site_transient('update_themes');
816                 search_theme_directories( true );
817                 foreach ( wp_get_themes() as $theme )
818                         $theme->cache_delete();
819
820                 return true;
821         }
822
823         function bulk_upgrade($themes) {
824
825                 $this->init();
826                 $this->bulk = true;
827                 $this->upgrade_strings();
828
829                 $current = get_site_transient( 'update_themes' );
830
831                 add_filter('upgrader_pre_install', array(&$this, 'current_before'), 10, 2);
832                 add_filter('upgrader_post_install', array(&$this, 'current_after'), 10, 2);
833                 add_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'), 10, 4);
834
835                 $this->skin->header();
836
837                 // Connect to the Filesystem first.
838                 $res = $this->fs_connect( array(WP_CONTENT_DIR) );
839                 if ( ! $res ) {
840                         $this->skin->footer();
841                         return false;
842                 }
843
844                 $this->skin->bulk_header();
845
846                 // Only start maintenance mode if running in Multisite OR the theme is in use
847                 $maintenance = is_multisite(); // @TODO: This should only kick in for individual sites if at all possible.
848                 foreach ( $themes as $theme )
849                         $maintenance = $maintenance || $theme == get_stylesheet() || $theme == get_template();
850                 if ( $maintenance )
851                         $this->maintenance_mode(true);
852
853                 $results = array();
854
855                 $this->update_count = count($themes);
856                 $this->update_current = 0;
857                 foreach ( $themes as $theme ) {
858                         $this->update_current++;
859
860                         if ( !isset( $current->response[ $theme ] ) ) {
861                                 $this->skin->set_result(false);
862                                 $this->skin->before();
863                                 $this->skin->error('up_to_date');
864                                 $this->skin->after();
865                                 $results[$theme] = false;
866                                 continue;
867                         }
868
869                         $this->skin->theme_info = $this->theme_info($theme);
870
871                         // Get the URL to the zip file
872                         $r = $current->response[ $theme ];
873
874                         $options = array(
875                                                         'package' => $r['package'],
876                                                         'destination' => WP_CONTENT_DIR . '/themes',
877                                                         'clear_destination' => true,
878                                                         'clear_working' => true,
879                                                         'hook_extra' => array(
880                                                                                                 'theme' => $theme
881                                                                                                 )
882                                                         );
883
884                         $result = $this->run($options);
885
886                         $results[$theme] = $this->result;
887
888                         // Prevent credentials auth screen from displaying multiple times
889                         if ( false === $result )
890                                 break;
891                 } //end foreach $plugins
892
893                 $this->maintenance_mode(false);
894
895                 $this->skin->bulk_footer();
896
897                 $this->skin->footer();
898
899                 // Cleanup our hooks, in case something else does a upgrade on this connection.
900                 remove_filter('upgrader_pre_install', array(&$this, 'current_before'), 10, 2);
901                 remove_filter('upgrader_post_install', array(&$this, 'current_after'), 10, 2);
902                 remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'), 10, 4);
903
904                 // Force refresh of theme update information
905                 delete_site_transient('update_themes');
906                 search_theme_directories( true );
907                 foreach ( wp_get_themes() as $theme )
908                         $theme->cache_delete();
909
910                 return $results;
911         }
912
913         function check_package($source) {
914                 global $wp_filesystem;
915
916                 if ( is_wp_error($source) )
917                         return $source;
918
919                 // Check the folder contains a valid theme
920                 $working_directory = str_replace( $wp_filesystem->wp_content_dir(), trailingslashit(WP_CONTENT_DIR), $source);
921                 if ( ! is_dir($working_directory) ) // Sanity check, if the above fails, lets not prevent installation.
922                         return $source;
923
924                 // A proper archive should have a style.css file in the single subdirectory
925                 if ( ! file_exists( $working_directory . 'style.css' ) )
926                         return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __('The theme is missing the <code>style.css</code> stylesheet.') );
927
928                 $info = get_file_data( $working_directory . 'style.css', array( 'Name' => 'Theme Name', 'Template' => 'Template' ) );
929
930                 if ( empty( $info['Name'] ) )
931                         return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __("The <code>style.css</code> stylesheet doesn't contain a valid theme header.") );
932
933                 // If it's not a child theme, it must have at least an index.php to be legit.
934                 if ( empty( $info['Template'] ) && ! file_exists( $working_directory . 'index.php' ) )
935                         return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __('The theme is missing the <code>index.php</code> file.') );
936
937                 return $source;
938         }
939
940         function current_before($return, $theme) {
941
942                 if ( is_wp_error($return) )
943                         return $return;
944
945                 $theme = isset($theme['theme']) ? $theme['theme'] : '';
946
947                 if ( $theme != get_stylesheet() ) //If not current
948                         return $return;
949                 //Change to maintenance mode now.
950                 if ( ! $this->bulk )
951                         $this->maintenance_mode(true);
952
953                 return $return;
954         }
955
956         function current_after($return, $theme) {
957                 if ( is_wp_error($return) )
958                         return $return;
959
960                 $theme = isset($theme['theme']) ? $theme['theme'] : '';
961
962                 if ( $theme != get_stylesheet() ) // If not current
963                         return $return;
964
965                 // Ensure stylesheet name hasnt changed after the upgrade:
966                 // @TODO: Note, This doesn't handle the Template changing, or the Template name changing.
967                 if ( $theme == get_stylesheet() && $theme != $this->result['destination_name'] ) {
968                         $theme_info = $this->theme_info();
969                         $stylesheet = $this->result['destination_name'];
970                         $template = $theme_info->get_template();
971                         switch_theme($template, $stylesheet, true);
972                 }
973
974                 //Time to remove maintenance mode
975                 if ( ! $this->bulk )
976                         $this->maintenance_mode(false);
977                 return $return;
978         }
979
980         function delete_old_theme($removed, $local_destination, $remote_destination, $theme) {
981                 global $wp_filesystem;
982
983                 $theme = isset($theme['theme']) ? $theme['theme'] : '';
984
985                 if ( is_wp_error($removed) || empty($theme) )
986                         return $removed; //Pass errors through.
987
988                 $themes_dir = $wp_filesystem->wp_themes_dir();
989                 if ( $wp_filesystem->exists( trailingslashit($themes_dir) . $theme ) )
990                         if ( ! $wp_filesystem->delete( trailingslashit($themes_dir) . $theme, true ) )
991                                 return false;
992                 return true;
993         }
994
995         function theme_info($theme = null) {
996
997                 if ( empty($theme) ) {
998                         if ( !empty($this->result['destination_name']) )
999                                 $theme = $this->result['destination_name'];
1000                         else
1001                                 return false;
1002                 }
1003                 return wp_get_theme( $theme, WP_CONTENT_DIR . '/themes/' );
1004         }
1005
1006 }
1007
1008 /**
1009  * Core Upgrader class for WordPress. It allows for WordPress to upgrade itself in combination with the wp-admin/includes/update-core.php file
1010  *
1011  * @TODO More Detailed docs, for methods as well.
1012  *
1013  * @package WordPress
1014  * @subpackage Upgrader
1015  * @since 2.8.0
1016  */
1017 class Core_Upgrader extends WP_Upgrader {
1018
1019         function upgrade_strings() {
1020                 $this->strings['up_to_date'] = __('WordPress is at the latest version.');
1021                 $this->strings['no_package'] = __('Update package not available.');
1022                 $this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>&#8230;');
1023                 $this->strings['unpack_package'] = __('Unpacking the update&#8230;');
1024                 $this->strings['copy_failed'] = __('Could not copy files.');
1025                 $this->strings['copy_failed_space'] = __('Could not copy files. You may have run out of disk space.' );
1026         }
1027
1028         function upgrade($current) {
1029                 global $wp_filesystem, $wp_version;
1030
1031                 $this->init();
1032                 $this->upgrade_strings();
1033
1034                 if ( !empty($feedback) )
1035                         add_filter('update_feedback', $feedback);
1036
1037                 // Is an update available?
1038                 if ( !isset( $current->response ) || $current->response == 'latest' )
1039                         return new WP_Error('up_to_date', $this->strings['up_to_date']);
1040
1041                 $res = $this->fs_connect( array(ABSPATH, WP_CONTENT_DIR) );
1042                 if ( is_wp_error($res) )
1043                         return $res;
1044
1045                 $wp_dir = trailingslashit($wp_filesystem->abspath());
1046
1047                 // If partial update is returned from the API, use that, unless we're doing a reinstall.
1048                 // If we cross the new_bundled version number, then use the new_bundled zip.
1049                 // Don't though if the constant is set to skip bundled items.
1050                 // If the API returns a no_content zip, go with it. Finally, default to the full zip.
1051                 if ( $current->packages->partial && 'reinstall' != $current->response && $wp_version == $current->partial_version )
1052                         $to_download = 'partial';
1053                 elseif ( $current->packages->new_bundled && version_compare( $wp_version, $current->new_bundled, '<' )
1054                         && ( ! defined( 'CORE_UPGRADE_SKIP_NEW_BUNDLED' ) || ! CORE_UPGRADE_SKIP_NEW_BUNDLED ) )
1055                         $to_download = 'new_bundled';
1056                 elseif ( $current->packages->no_content )
1057                         $to_download = 'no_content';
1058                 else
1059                         $to_download = 'full';
1060
1061                 $download = $this->download_package( $current->packages->$to_download );
1062                 if ( is_wp_error($download) )
1063                         return $download;
1064
1065                 $working_dir = $this->unpack_package( $download );
1066                 if ( is_wp_error($working_dir) )
1067                         return $working_dir;
1068
1069                 // Copy update-core.php from the new version into place.
1070                 if ( !$wp_filesystem->copy($working_dir . '/wordpress/wp-admin/includes/update-core.php', $wp_dir . 'wp-admin/includes/update-core.php', true) ) {
1071                         $wp_filesystem->delete($working_dir, true);
1072                         return new WP_Error('copy_failed', $this->strings['copy_failed']);
1073                 }
1074                 $wp_filesystem->chmod($wp_dir . 'wp-admin/includes/update-core.php', FS_CHMOD_FILE);
1075
1076                 require(ABSPATH . 'wp-admin/includes/update-core.php');
1077
1078                 if ( ! function_exists( 'update_core' ) )
1079                         return new WP_Error( 'copy_failed_space', $this->strings['copy_failed_space'] );
1080
1081                 return update_core($working_dir, $wp_dir);
1082         }
1083
1084 }
1085
1086 /**
1087  * Generic Skin for the WordPress Upgrader classes. This skin is designed to be extended for specific purposes.
1088  *
1089  * @TODO More Detailed docs, for methods as well.
1090  *
1091  * @package WordPress
1092  * @subpackage Upgrader
1093  * @since 2.8.0
1094  */
1095 class WP_Upgrader_Skin {
1096
1097         var $upgrader;
1098         var $done_header = false;
1099         var $result = false;
1100
1101         function __construct($args = array()) {
1102                 $defaults = array( 'url' => '', 'nonce' => '', 'title' => '', 'context' => false );
1103                 $this->options = wp_parse_args($args, $defaults);
1104         }
1105
1106         function set_upgrader(&$upgrader) {
1107                 if ( is_object($upgrader) )
1108                         $this->upgrader =& $upgrader;
1109                 $this->add_strings();
1110         }
1111
1112         function add_strings() {
1113         }
1114
1115         function set_result($result) {
1116                 $this->result = $result;
1117         }
1118
1119         function request_filesystem_credentials($error = false) {
1120                 $url = $this->options['url'];
1121                 $context = $this->options['context'];
1122                 if ( !empty($this->options['nonce']) )
1123                         $url = wp_nonce_url($url, $this->options['nonce']);
1124                 return request_filesystem_credentials($url, '', $error, $context); //Possible to bring inline, Leaving as is for now.
1125         }
1126
1127         function header() {
1128                 if ( $this->done_header )
1129                         return;
1130                 $this->done_header = true;
1131                 echo '<div class="wrap">';
1132                 echo screen_icon();
1133                 echo '<h2>' . $this->options['title'] . '</h2>';
1134         }
1135         function footer() {
1136                 echo '</div>';
1137         }
1138
1139         function error($errors) {
1140                 if ( ! $this->done_header )
1141                         $this->header();
1142                 if ( is_string($errors) ) {
1143                         $this->feedback($errors);
1144                 } elseif ( is_wp_error($errors) && $errors->get_error_code() ) {
1145                         foreach ( $errors->get_error_messages() as $message ) {
1146                                 if ( $errors->get_error_data() )
1147                                         $this->feedback($message . ' ' . $errors->get_error_data() );
1148                                 else
1149                                         $this->feedback($message);
1150                         }
1151                 }
1152         }
1153
1154         function feedback($string) {
1155                 if ( isset( $this->upgrader->strings[$string] ) )
1156                         $string = $this->upgrader->strings[$string];
1157
1158                 if ( strpos($string, '%') !== false ) {
1159                         $args = func_get_args();
1160                         $args = array_splice($args, 1);
1161                         if ( !empty($args) )
1162                                 $string = vsprintf($string, $args);
1163                 }
1164                 if ( empty($string) )
1165                         return;
1166                 show_message($string);
1167         }
1168         function before() {}
1169         function after() {}
1170
1171 }
1172
1173 /**
1174  * Plugin Upgrader Skin for WordPress Plugin Upgrades.
1175  *
1176  * @TODO More Detailed docs, for methods as well.
1177  *
1178  * @package WordPress
1179  * @subpackage Upgrader
1180  * @since 2.8.0
1181  */
1182 class Plugin_Upgrader_Skin extends WP_Upgrader_Skin {
1183         var $plugin = '';
1184         var $plugin_active = false;
1185         var $plugin_network_active = false;
1186
1187         function __construct($args = array()) {
1188                 $defaults = array( 'url' => '', 'plugin' => '', 'nonce' => '', 'title' => __('Update Plugin') );
1189                 $args = wp_parse_args($args, $defaults);
1190
1191                 $this->plugin = $args['plugin'];
1192
1193                 $this->plugin_active = is_plugin_active( $this->plugin );
1194                 $this->plugin_network_active = is_plugin_active_for_network( $this->plugin );
1195
1196                 parent::__construct($args);
1197         }
1198
1199         function after() {
1200                 $this->plugin = $this->upgrader->plugin_info();
1201                 if ( !empty($this->plugin) && !is_wp_error($this->result) && $this->plugin_active ){
1202                         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>';
1203                 }
1204
1205                 $update_actions =  array(
1206                         '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>',
1207                         'plugins_page' => '<a href="' . self_admin_url('plugins.php') . '" title="' . esc_attr__('Go to plugins page') . '" target="_parent">' . __('Return to Plugins page') . '</a>'
1208                 );
1209                 if ( $this->plugin_active )
1210                         unset( $update_actions['activate_plugin'] );
1211                 if ( ! $this->result || is_wp_error($this->result) )
1212                         unset( $update_actions['activate_plugin'] );
1213
1214                 $update_actions = apply_filters('update_plugin_complete_actions', $update_actions, $this->plugin);
1215                 if ( ! empty($update_actions) )
1216                         $this->feedback(implode(' | ', (array)$update_actions));
1217         }
1218
1219         function before() {
1220                 if ( $this->upgrader->show_before ) {
1221                         echo $this->upgrader->show_before;
1222                         $this->upgrader->show_before = '';
1223                 }
1224         }
1225 }
1226
1227 /**
1228  * Plugin Upgrader Skin for WordPress Plugin Upgrades.
1229  *
1230  * @package WordPress
1231  * @subpackage Upgrader
1232  * @since 3.0.0
1233  */
1234 class Bulk_Upgrader_Skin extends WP_Upgrader_Skin {
1235         var $in_loop = false;
1236         var $error = false;
1237
1238         function __construct($args = array()) {
1239                 $defaults = array( 'url' => '', 'nonce' => '' );
1240                 $args = wp_parse_args($args, $defaults);
1241
1242                 parent::__construct($args);
1243         }
1244
1245         function add_strings() {
1246                 $this->upgrader->strings['skin_upgrade_start'] = __('The update process is starting. This process may take a while on some hosts, so please be patient.');
1247                 $this->upgrader->strings['skin_update_failed_error'] = __('An error occurred while updating %1$s: <strong>%2$s</strong>.');
1248                 $this->upgrader->strings['skin_update_failed'] = __('The update of %1$s failed.');
1249                 $this->upgrader->strings['skin_update_successful'] = __('%1$s updated successfully.').' <a onclick="%2$s" href="#" class="hide-if-no-js"><span>'.__('Show Details').'</span><span class="hidden">'.__('Hide Details').'</span>.</a>';
1250                 $this->upgrader->strings['skin_upgrade_end'] = __('All updates have been completed.');
1251         }
1252
1253         function feedback($string) {
1254                 if ( isset( $this->upgrader->strings[$string] ) )
1255                         $string = $this->upgrader->strings[$string];
1256
1257                 if ( strpos($string, '%') !== false ) {
1258                         $args = func_get_args();
1259                         $args = array_splice($args, 1);
1260                         if ( !empty($args) )
1261                                 $string = vsprintf($string, $args);
1262                 }
1263                 if ( empty($string) )
1264                         return;
1265                 if ( $this->in_loop )
1266                         echo "$string<br />\n";
1267                 else
1268                         echo "<p>$string</p>\n";
1269         }
1270
1271         function header() {
1272                 // Nothing, This will be displayed within a iframe.
1273         }
1274
1275         function footer() {
1276                 // Nothing, This will be displayed within a iframe.
1277         }
1278         function error($error) {
1279                 if ( is_string($error) && isset( $this->upgrader->strings[$error] ) )
1280                         $this->error = $this->upgrader->strings[$error];
1281
1282                 if ( is_wp_error($error) ) {
1283                         foreach ( $error->get_error_messages() as $emessage ) {
1284                                 if ( $error->get_error_data() )
1285                                         $messages[] = $emessage . ' ' . $error->get_error_data();
1286                                 else
1287                                         $messages[] = $emessage;
1288                         }
1289                         $this->error = implode(', ', $messages);
1290                 }
1291                 echo '<script type="text/javascript">jQuery(\'.waiting-' . esc_js($this->upgrader->update_current) . '\').hide();</script>';
1292         }
1293
1294         function bulk_header() {
1295                 $this->feedback('skin_upgrade_start');
1296         }
1297
1298         function bulk_footer() {
1299                 $this->feedback('skin_upgrade_end');
1300         }
1301
1302         function before($title = '') {
1303                 $this->in_loop = true;
1304                 printf( '<h4>' . $this->upgrader->strings['skin_before_update_header'] . ' <img alt="" src="' . admin_url( 'images/wpspin_light.gif' ) . '" class="hidden waiting-' . $this->upgrader->update_current . '" style="vertical-align:middle;" /></h4>',  $title, $this->upgrader->update_current, $this->upgrader->update_count);
1305                 echo '<script type="text/javascript">jQuery(\'.waiting-' . esc_js($this->upgrader->update_current) . '\').show();</script>';
1306                 echo '<div class="update-messages hide-if-js" id="progress-' . esc_attr($this->upgrader->update_current) . '"><p>';
1307                 $this->flush_output();
1308         }
1309
1310         function after($title = '') {
1311                 echo '</p></div>';
1312                 if ( $this->error || ! $this->result ) {
1313                         if ( $this->error )
1314                                 echo '<div class="error"><p>' . sprintf($this->upgrader->strings['skin_update_failed_error'], $title, $this->error) . '</p></div>';
1315                         else
1316                                 echo '<div class="error"><p>' . sprintf($this->upgrader->strings['skin_update_failed'], $title) . '</p></div>';
1317
1318                         echo '<script type="text/javascript">jQuery(\'#progress-' . esc_js($this->upgrader->update_current) . '\').show();</script>';
1319                 }
1320                 if ( !empty($this->result) && !is_wp_error($this->result) ) {
1321                         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>';
1322                         echo '<script type="text/javascript">jQuery(\'.waiting-' . esc_js($this->upgrader->update_current) . '\').hide();</script>';
1323                 }
1324
1325                 $this->reset();
1326                 $this->flush_output();
1327         }
1328
1329         function reset() {
1330                 $this->in_loop = false;
1331                 $this->error = false;
1332         }
1333
1334         function flush_output() {
1335                 wp_ob_end_flush_all();
1336                 flush();
1337         }
1338 }
1339
1340 class Bulk_Plugin_Upgrader_Skin extends Bulk_Upgrader_Skin {
1341         var $plugin_info = array(); // Plugin_Upgrader::bulk() will fill this in.
1342
1343         function __construct($args = array()) {
1344                 parent::__construct($args);
1345         }
1346
1347         function add_strings() {
1348                 parent::add_strings();
1349                 $this->upgrader->strings['skin_before_update_header'] = __('Updating Plugin %1$s (%2$d/%3$d)');
1350         }
1351
1352         function before() {
1353                 parent::before($this->plugin_info['Title']);
1354         }
1355
1356         function after() {
1357                 parent::after($this->plugin_info['Title']);
1358         }
1359         function bulk_footer() {
1360                 parent::bulk_footer();
1361                 $update_actions =  array(
1362                         'plugins_page' => '<a href="' . self_admin_url('plugins.php') . '" title="' . esc_attr__('Go to plugins page') . '" target="_parent">' . __('Return to Plugins page') . '</a>',
1363                         '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>'
1364                 );
1365
1366                 $update_actions = apply_filters('update_bulk_plugins_complete_actions', $update_actions, $this->plugin_info);
1367                 if ( ! empty($update_actions) )
1368                         $this->feedback(implode(' | ', (array)$update_actions));
1369         }
1370 }
1371
1372 class Bulk_Theme_Upgrader_Skin extends Bulk_Upgrader_Skin {
1373         var $theme_info = array(); // Theme_Upgrader::bulk() will fill this in.
1374
1375         function __construct($args = array()) {
1376                 parent::__construct($args);
1377         }
1378
1379         function add_strings() {
1380                 parent::add_strings();
1381                 $this->upgrader->strings['skin_before_update_header'] = __('Updating Theme %1$s (%2$d/%3$d)');
1382         }
1383
1384         function before() {
1385                 parent::before( $this->theme_info->display('Name') );
1386         }
1387
1388         function after() {
1389                 parent::after( $this->theme_info->display('Name') );
1390         }
1391
1392         function bulk_footer() {
1393                 parent::bulk_footer();
1394                 $update_actions =  array(
1395                         'themes_page' => '<a href="' . self_admin_url('themes.php') . '" title="' . esc_attr__('Go to themes page') . '" target="_parent">' . __('Return to Themes page') . '</a>',
1396                         '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>'
1397                 );
1398
1399                 $update_actions = apply_filters('update_bulk_theme_complete_actions', $update_actions, $this->theme_info );
1400                 if ( ! empty($update_actions) )
1401                         $this->feedback(implode(' | ', (array)$update_actions));
1402         }
1403 }
1404
1405 /**
1406  * Plugin Installer Skin for WordPress Plugin Installer.
1407  *
1408  * @TODO More Detailed docs, for methods as well.
1409  *
1410  * @package WordPress
1411  * @subpackage Upgrader
1412  * @since 2.8.0
1413  */
1414 class Plugin_Installer_Skin extends WP_Upgrader_Skin {
1415         var $api;
1416         var $type;
1417
1418         function __construct($args = array()) {
1419                 $defaults = array( 'type' => 'web', 'url' => '', 'plugin' => '', 'nonce' => '', 'title' => '' );
1420                 $args = wp_parse_args($args, $defaults);
1421
1422                 $this->type = $args['type'];
1423                 $this->api = isset($args['api']) ? $args['api'] : array();
1424
1425                 parent::__construct($args);
1426         }
1427
1428         function before() {
1429                 if ( !empty($this->api) )
1430                         $this->upgrader->strings['process_success'] = sprintf( __('Successfully installed the plugin <strong>%s %s</strong>.'), $this->api->name, $this->api->version);
1431         }
1432
1433         function after() {
1434
1435                 $plugin_file = $this->upgrader->plugin_info();
1436
1437                 $install_actions = array();
1438
1439                 $from = isset($_GET['from']) ? stripslashes($_GET['from']) : 'plugins';
1440
1441                 if ( 'import' == $from )
1442                         $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>';
1443                 else
1444                         $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>';
1445
1446                 if ( is_multisite() && current_user_can( 'manage_network_plugins' ) ) {
1447                         $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>';
1448                         unset( $install_actions['activate_plugin'] );
1449                 }
1450
1451                 if ( 'import' == $from )
1452                         $install_actions['importers_page'] = '<a href="' . admin_url('import.php') . '" title="' . esc_attr__('Return to Importers') . '" target="_parent">' . __('Return to Importers') . '</a>';
1453                 else if ( $this->type == 'web' )
1454                         $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>';
1455                 else
1456                         $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>';
1457
1458                 if ( ! $this->result || is_wp_error($this->result) ) {
1459                         unset( $install_actions['activate_plugin'] );
1460                         unset( $install_actions['network_activate'] );
1461                 }
1462                 $install_actions = apply_filters('install_plugin_complete_actions', $install_actions, $this->api, $plugin_file);
1463                 if ( ! empty($install_actions) )
1464                         $this->feedback(implode(' | ', (array)$install_actions));
1465         }
1466 }
1467
1468 /**
1469  * Theme Installer Skin for the WordPress Theme Installer.
1470  *
1471  * @TODO More Detailed docs, for methods as well.
1472  *
1473  * @package WordPress
1474  * @subpackage Upgrader
1475  * @since 2.8.0
1476  */
1477 class Theme_Installer_Skin extends WP_Upgrader_Skin {
1478         var $api;
1479         var $type;
1480
1481         function __construct($args = array()) {
1482                 $defaults = array( 'type' => 'web', 'url' => '', 'theme' => '', 'nonce' => '', 'title' => '' );
1483                 $args = wp_parse_args($args, $defaults);
1484
1485                 $this->type = $args['type'];
1486                 $this->api = isset($args['api']) ? $args['api'] : array();
1487
1488                 parent::__construct($args);
1489         }
1490
1491         function before() {
1492                 if ( !empty($this->api) )
1493                         $this->upgrader->strings['process_success'] = sprintf( $this->upgrader->strings['process_success_specific'], $this->api->name, $this->api->version);
1494         }
1495
1496         function after() {
1497                 if ( empty($this->upgrader->result['destination_name']) )
1498                         return;
1499
1500                 $theme_info = $this->upgrader->theme_info();
1501                 if ( empty( $theme_info ) )
1502                         return;
1503
1504                 $name       = $theme_info->display('Name');
1505                 $stylesheet = $this->upgrader->result['destination_name'];
1506                 $template   = $theme_info->get_template();
1507
1508                 $preview_link = add_query_arg( array(
1509                         'preview'    => 1,
1510                         'template'   => $template,
1511                         'stylesheet' => $stylesheet,
1512                 ), trailingslashit( get_home_url() ) );
1513
1514                 $activate_link = add_query_arg( array(
1515                         'action'     => 'activate',
1516                         'template'   => $template,
1517                         'stylesheet' => $stylesheet,
1518                 ), admin_url('themes.php') );
1519                 $activate_link = wp_nonce_url( $activate_link, 'switch-theme_' . $stylesheet );
1520
1521                 $install_actions = array();
1522                 $install_actions['preview']  = '<a href="' . esc_url( $preview_link ) . '" class="hide-if-customize" title="' . esc_attr( sprintf( __('Preview &#8220;%s&#8221;'), $name ) ) . '">' . __('Preview') . '</a>';
1523                 $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>';
1524                 $install_actions['activate'] = '<a href="' . esc_url( $activate_link ) . '" class="activatelink" title="' . esc_attr( sprintf( __('Activate &#8220;%s&#8221;'), $name ) ) . '">' . __('Activate') . '</a>';
1525
1526                 if ( is_network_admin() && current_user_can( 'manage_network_themes' ) )
1527                         $install_actions['network_enable'] = '<a href="' . esc_url( wp_nonce_url( 'themes.php?action=enable&amp;theme=' . $stylesheet, 'enable-theme_' . $stylesheet ) ) . '" title="' . esc_attr__( 'Enable this theme for all sites in this network' ) . '" target="_parent">' . __( 'Network Enable' ) . '</a>';
1528
1529                 if ( $this->type == 'web' )
1530                         $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>';
1531                 else
1532                         $install_actions['themes_page'] = '<a href="' . self_admin_url('themes.php') . '" title="' . esc_attr__('Themes page') . '" target="_parent">' . __('Return to Themes page') . '</a>';
1533
1534                 if ( ! $this->result || is_wp_error($this->result) || is_network_admin() )
1535                         unset( $install_actions['activate'], $install_actions['preview'] );
1536
1537                 $install_actions = apply_filters('install_theme_complete_actions', $install_actions, $this->api, $stylesheet, $theme_info);
1538                 if ( ! empty($install_actions) )
1539                         $this->feedback(implode(' | ', (array)$install_actions));
1540         }
1541 }
1542
1543 /**
1544  * Theme Upgrader Skin for WordPress Theme Upgrades.
1545  *
1546  * @TODO More Detailed docs, for methods as well.
1547  *
1548  * @package WordPress
1549  * @subpackage Upgrader
1550  * @since 2.8.0
1551  */
1552 class Theme_Upgrader_Skin extends WP_Upgrader_Skin {
1553         var $theme = '';
1554
1555         function __construct($args = array()) {
1556                 $defaults = array( 'url' => '', 'theme' => '', 'nonce' => '', 'title' => __('Update Theme') );
1557                 $args = wp_parse_args($args, $defaults);
1558
1559                 $this->theme = $args['theme'];
1560
1561                 parent::__construct($args);
1562         }
1563
1564         function after() {
1565
1566                 $update_actions = array();
1567                 if ( ! empty( $this->upgrader->result['destination_name'] ) && $theme_info = $this->upgrader->theme_info() ) {
1568                         $name       = $theme_info->display('Name');
1569                         $stylesheet = $this->upgrader->result['destination_name'];
1570                         $template   = $theme_info->get_template();
1571
1572                         $preview_link = add_query_arg( array(
1573                                 'preview'    => 1,
1574                                 'template'   => $template,
1575                                 'stylesheet' => $stylesheet,
1576                         ), trailingslashit( get_home_url() ) );
1577
1578                         $activate_link = add_query_arg( array(
1579                                 'action'     => 'activate',
1580                                 'template'   => $template,
1581                                 'stylesheet' => $stylesheet,
1582                         ), admin_url('themes.php') );
1583                         $activate_link = wp_nonce_url( $activate_link, 'switch-theme_' . $stylesheet );
1584
1585                         if ( get_stylesheet() == $stylesheet ) {
1586                                 $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>';
1587                         } else {
1588                                 $update_actions['preview']  = '<a href="' . esc_url( $preview_link ) . '" class="hide-if-customize" title="' . esc_attr( sprintf( __('Preview &#8220;%s&#8221;'), $name ) ) . '">' . __('Preview') . '</a>';
1589                                 $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>';
1590                                 $update_actions['activate'] = '<a href="' . esc_url( $activate_link ) . '" class="activatelink" title="' . esc_attr( sprintf( __('Activate &#8220;%s&#8221;'), $name ) ) . '">' . __('Activate') . '</a>';
1591                         }
1592
1593                         if ( ! $this->result || is_wp_error( $this->result ) || is_network_admin() )
1594                                 unset( $update_actions['preview'], $update_actions['activate'] );
1595                 }
1596
1597                 $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>';
1598
1599                 $update_actions = apply_filters('update_theme_complete_actions', $update_actions, $this->theme);
1600                 if ( ! empty($update_actions) )
1601                         $this->feedback(implode(' | ', (array)$update_actions));
1602         }
1603 }
1604
1605 /**
1606  * 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.
1607  *
1608  * @TODO More Detailed docs, for methods as well.
1609  *
1610  * @package WordPress
1611  * @subpackage Upgrader
1612  * @since 2.8.0
1613  */
1614 class File_Upload_Upgrader {
1615         var $package;
1616         var $filename;
1617         var $id = 0;
1618
1619         function __construct($form, $urlholder) {
1620
1621                 if ( empty($_FILES[$form]['name']) && empty($_GET[$urlholder]) )
1622                         wp_die(__('Please select a file'));
1623
1624                 //Handle a newly uploaded file, Else assume its already been uploaded
1625                 if ( ! empty($_FILES) ) {
1626                         $overrides = array( 'test_form' => false, 'test_type' => false );
1627                         $file = wp_handle_upload( $_FILES[$form], $overrides );
1628
1629                         if ( isset( $file['error'] ) )
1630                                 wp_die( $file['error'] );
1631
1632                         $this->filename = $_FILES[$form]['name'];
1633                         $this->package = $file['file'];
1634
1635                         // Construct the object array
1636                         $object = array(
1637                                 'post_title' => $this->filename,
1638                                 'post_content' => $file['url'],
1639                                 'post_mime_type' => $file['type'],
1640                                 'guid' => $file['url'],
1641                                 'context' => 'upgrader',
1642                                 'post_status' => 'private'
1643                         );
1644
1645                         // Save the data
1646                         $this->id = wp_insert_attachment( $object, $file['file'] );
1647
1648                         // schedule a cleanup for 2 hours from now in case of failed install
1649                         wp_schedule_single_event( time() + 7200, 'upgrader_scheduled_cleanup', array( $this->id ) );
1650
1651                 } elseif ( is_numeric( $_GET[$urlholder] ) ) {
1652                         // Numeric Package = previously uploaded file, see above.
1653                         $this->id = (int) $_GET[$urlholder];
1654                         $attachment = get_post( $this->id );
1655                         if ( empty($attachment) )
1656                                 wp_die(__('Please select a file'));
1657
1658                         $this->filename = $attachment->post_title;
1659                         $this->package = get_attached_file( $attachment->ID );
1660                 } else {
1661                         // Else, It's set to something, Back compat for plugins using the old (pre-3.3) File_Uploader handler.
1662                         if ( ! ( ( $uploads = wp_upload_dir() ) && false === $uploads['error'] ) )
1663                                 wp_die( $uploads['error'] );
1664
1665                         $this->filename = $_GET[$urlholder];
1666                         $this->package = $uploads['basedir'] . '/' . $this->filename;
1667                 }
1668         }
1669
1670         function cleanup() {
1671                 if ( $this->id )
1672                         wp_delete_attachment( $this->id );
1673
1674                 elseif ( file_exists( $this->package ) )
1675                         return @unlink( $this->package );
1676
1677                 return true;
1678         }
1679 }