Wordpress 2.9
[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 $result = array();
27
28         function WP_Upgrader($skin = null) {
29                 return $this->__construct($skin);
30         }
31         function __construct($skin = null) {
32                 if ( null == $skin )
33                         $this->skin = new WP_Upgrader_Skin();
34                 else
35                         $this->skin = $skin;
36         }
37
38         function init() {
39                 $this->skin->set_upgrader($this);
40                 $this->generic_strings();
41         }
42
43         function generic_strings() {
44                 $this->strings['bad_request'] = __('Invalid Data provided.');
45                 $this->strings['fs_unavailable'] = __('Could not access filesystem.');
46                 $this->strings['fs_error'] = __('Filesystem error');
47                 $this->strings['fs_no_root_dir'] = __('Unable to locate WordPress Root directory.');
48                 $this->strings['fs_no_content_dir'] = __('Unable to locate WordPress Content directory (wp-content).');
49                 $this->strings['fs_no_plugins_dir'] = __('Unable to locate WordPress Plugin directory.');
50                 $this->strings['fs_no_themes_dir'] = __('Unable to locate WordPress Theme directory.');
51                 $this->strings['fs_no_folder'] = __('Unable to locate needed folder (%s).');
52
53                 $this->strings['download_failed'] = __('Download failed.');
54                 $this->strings['installing_package'] = __('Installing the latest version.');
55                 $this->strings['folder_exists'] = __('Destination folder already exists.');
56                 $this->strings['mkdir_failed'] = __('Could not create directory.');
57                 $this->strings['bad_package'] = __('Incompatible Archive');
58
59                 $this->strings['maintenance_start'] = __('Enabling Maintenance mode.');
60                 $this->strings['maintenance_end'] = __('Disabling Maintenance mode.');
61         }
62
63         function fs_connect( $directories = array() ) {
64                 global $wp_filesystem;
65
66                 if ( false === ($credentials = $this->skin->request_filesystem_credentials()) )
67                         return false;
68
69                 if ( ! WP_Filesystem($credentials) ) {
70                         $error = true;
71                         if ( is_object($wp_filesystem) && $wp_filesystem->errors->get_error_code() )
72                                 $error = $wp_filesystem->errors;
73                         $this->skin->request_filesystem_credentials($error); //Failed to connect, Error and request again
74                         return false;
75                 }
76
77                 if ( ! is_object($wp_filesystem) )
78                         return new WP_Error('fs_unavailable', $this->strings['fs_unavailable'] );
79
80                 if ( is_wp_error($wp_filesystem->errors) && $wp_filesystem->errors->get_error_code() )
81                         return new WP_Error('fs_error', $this->strings['fs_error'], $wp_filesystem->errors);
82
83                 foreach ( (array)$directories as $dir ) {
84                         switch ( $dir ) {
85                                 case ABSPATH:
86                                         if ( ! $wp_filesystem->abspath() )
87                                                 return new WP_Error('fs_no_root_dir', $this->strings['fs_no_root_dir']);
88                                         break;
89                                 case WP_CONTENT_DIR:
90                                         if ( ! $wp_filesystem->wp_content_dir() )
91                                                 return new WP_Error('fs_no_content_dir', $this->strings['fs_no_content_dir']);
92                                         break;
93                                 case WP_PLUGIN_DIR:
94                                         if ( ! $wp_filesystem->wp_plugins_dir() )
95                                                 return new WP_Error('fs_no_plugins_dir', $this->strings['fs_no_plugins_dir']);
96                                         break;
97                                 case WP_CONTENT_DIR . '/themes':
98                                         if ( ! $wp_filesystem->find_folder(WP_CONTENT_DIR . '/themes') )
99                                                 return new WP_Error('fs_no_themes_dir', $this->strings['fs_no_themes_dir']);
100                                         break;
101                                 default:
102                                         if ( ! $wp_filesystem->find_folder($dir) )
103                                                 return new WP_Error('fs_no_folder', sprintf($this->strings['fs_no_folder'], $dir));
104                                         break;
105                         }
106                 }
107                 return true;
108         } //end fs_connect();
109
110         function download_package($package) {
111
112                 if ( ! preg_match('!^(http|https|ftp)://!i', $package) && file_exists($package) ) //Local file or remote?
113                         return $package; //must be a local file..
114
115                 if ( empty($package) )
116                         return new WP_Error('no_package', $this->strings['no_package']);
117
118                 $this->skin->feedback('downloading_package', $package);
119
120                 $download_file = download_url($package);
121
122                 if ( is_wp_error($download_file) )
123                         return new WP_Error('download_failed', $this->strings['download_failed'], $download_file->get_error_message());
124
125                 return $download_file;
126         }
127
128         function unpack_package($package, $delete_package = true) {
129                 global $wp_filesystem;
130
131                 $this->skin->feedback('unpack_package');
132
133                 $upgrade_folder = $wp_filesystem->wp_content_dir() . 'upgrade/';
134
135                 //Clean up contents of upgrade directory beforehand.
136                 $upgrade_files = $wp_filesystem->dirlist($upgrade_folder);
137                 if ( !empty($upgrade_files) ) {
138                         foreach ( $upgrade_files as $file )
139                                 $wp_filesystem->delete($upgrade_folder . $file['name'], true);
140                 }
141
142                 //We need a working directory
143                 $working_dir = $upgrade_folder . basename($package, '.zip');
144
145                 // Clean up working directory
146                 if ( $wp_filesystem->is_dir($working_dir) )
147                         $wp_filesystem->delete($working_dir, true);
148
149                 // Unzip package to working directory
150                 $result = unzip_file($package, $working_dir); //TODO optimizations, Copy when Move/Rename would suffice?
151
152                 // Once extracted, delete the package if required.
153                 if ( $delete_package )
154                         unlink($package);
155
156                 if ( is_wp_error($result) ) {
157                         $wp_filesystem->delete($working_dir, true);
158                         return $result;
159                 }
160
161                 return $working_dir;
162         }
163
164         function install_package($args = array()) {
165                 global $wp_filesystem;
166                 $defaults = array( 'source' => '', 'destination' => '', //Please always pass these
167                                                 'clear_destination' => false, 'clear_working' => false,
168                                                 'hook_extra' => array());
169
170                 $args = wp_parse_args($args, $defaults);
171                 extract($args);
172
173                 @set_time_limit( 300 );
174
175                 if ( empty($source) || empty($destination) )
176                         return new WP_Error('bad_request', $this->strings['bad_request']);
177
178                 $this->skin->feedback('installing_package');
179
180                 $res = apply_filters('upgrader_pre_install', true, $hook_extra);
181                 if ( is_wp_error($res) )
182                         return $res;
183
184                 //Retain the Original source and destinations
185                 $remote_source = $source;
186                 $local_destination = $destination;
187
188                 $source_files = array_keys( $wp_filesystem->dirlist($remote_source) );
189                 $remote_destination = $wp_filesystem->find_folder($local_destination);
190
191                 //Locate which directory to copy to the new folder, This is based on the actual folder holding the files.
192                 if ( 1 == count($source_files) && $wp_filesystem->is_dir( trailingslashit($source) . $source_files[0] . '/') ) //Only one folder? Then we want its contents.
193                         $source = trailingslashit($source) . trailingslashit($source_files[0]);
194                 elseif ( count($source_files) == 0 )
195                         return new WP_Error('bad_package', $this->strings['bad_package']); //There are no files?
196                 //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.
197
198                 //Hook ability to change the source file location..
199                 $source = apply_filters('upgrader_source_selection', $source, $remote_source, $this);
200                 if ( is_wp_error($source) )
201                         return $source;
202
203                 //Has the source location changed? If so, we need a new source_files list.
204                 if ( $source !== $remote_source )
205                         $source_files = array_keys( $wp_filesystem->dirlist($source) );
206
207                 //Protection against deleting files in any important base directories.
208                 if ( in_array( $destination, array(ABSPATH, WP_CONTENT_DIR, WP_PLUGIN_DIR, WP_CONTENT_DIR . '/themes') ) ) {
209                         $remote_destination = trailingslashit($remote_destination) . trailingslashit(basename($source));
210                         $destination = trailingslashit($destination) . trailingslashit(basename($source));
211                 }
212
213                 if ( $wp_filesystem->exists($remote_destination) ) {
214                         if ( $clear_destination ) {
215                                 //We're going to clear the destination if theres something there
216                                 $this->skin->feedback('remove_old');
217                                 $removed = $wp_filesystem->delete($remote_destination, true);
218                                 $removed = apply_filters('upgrader_clear_destination', $removed, $local_destination, $remote_destination, $hook_extra);
219
220                                 if ( is_wp_error($removed) )
221                                         return $removed;
222                                 else if ( ! $removed )
223                                         return new WP_Error('remove_old_failed', $this->strings['remove_old_failed']);
224                         } else {
225                                 //If we're not clearing the destination folder and something exists there allready, Bail.
226                                 //But first check to see if there are actually any files in the folder.
227                                 $_files = $wp_filesystem->dirlist($remote_destination);
228                                 if ( ! empty($_files) ) {
229                                         $wp_filesystem->delete($remote_source, true); //Clear out the source files.
230                                         return new WP_Error('folder_exists', $this->strings['folder_exists'], $remote_destination );
231                                 }
232                         }
233                 }
234
235                 //Create destination if needed
236                 if ( !$wp_filesystem->exists($remote_destination) )
237                         if ( !$wp_filesystem->mkdir($remote_destination, FS_CHMOD_DIR) )
238                                 return new WP_Error('mkdir_failed', $this->strings['mkdir_failed'], $remote_destination);
239
240                 // Copy new version of item into place.
241                 $result = copy_dir($source, $remote_destination);
242                 if ( is_wp_error($result) ) {
243                         if ( $clear_working )
244                                 $wp_filesystem->delete($remote_source, true);
245                         return $result;
246                 }
247
248                 //Clear the Working folder?
249                 if ( $clear_working )
250                         $wp_filesystem->delete($remote_source, true);
251
252                 $destination_name = basename( str_replace($local_destination, '', $destination) );
253                 if ( '.' == $destination_name )
254                         $destination_name = '';
255
256                 $this->result = compact('local_source', 'source', 'source_name', 'source_files', 'destination', 'destination_name', 'local_destination', 'remote_destination', 'clear_destination', 'delete_source_dir');
257
258                 $res = apply_filters('upgrader_post_install', true, $hook_extra, $this->result);
259                 if ( is_wp_error($res) ) {
260                         $this->result = $res;
261                         return $res;
262                 }
263
264                 //Bombard the calling function will all the info which we've just used.
265                 return $this->result;
266         }
267
268         function run($options) {
269
270                 $defaults = array(      'package' => '', //Please always pass this.
271                                                         'destination' => '', //And this
272                                                         'clear_destination' => false,
273                                                         'clear_working' => true,
274                                                         'is_multi' => false,
275                                                         'hook_extra' => array() //Pass any extra $hook_extra args here, this will be passed to any hooked filters.
276                                                 );
277
278                 $options = wp_parse_args($options, $defaults);
279                 extract($options);
280
281                 //Connect to the Filesystem first.
282                 $res = $this->fs_connect( array(WP_CONTENT_DIR, $destination) );
283                 if ( ! $res ) //Mainly for non-connected filesystem.
284                         return false;
285
286                 if ( is_wp_error($res) ) {
287                         $this->skin->error($res);
288                         return $res;
289                 }
290
291                 if ( !$is_multi ) // call $this->header separately if running multiple times
292                         $this->skin->header();
293
294                 $this->skin->before();
295
296                 //Download the package (Note, This just returns the filename of the file if the package is a local file)
297                 $download = $this->download_package( $package );
298                 if ( is_wp_error($download) ) {
299                         $this->skin->error($download);
300                         return $download;
301                 }
302
303                 //Unzip's the file into a temporary directory
304                 $working_dir = $this->unpack_package( $download );
305                 if ( is_wp_error($working_dir) ) {
306                         $this->skin->error($working_dir);
307                         return $working_dir;
308                 }
309
310                 //With the given options, this installs it to the destination directory.
311                 $result = $this->install_package( array(
312                                                                                         'source' => $working_dir,
313                                                                                         'destination' => $destination,
314                                                                                         'clear_destination' => $clear_destination,
315                                                                                         'clear_working' => $clear_working,
316                                                                                         'hook_extra' => $hook_extra
317                                                                                 ) );
318                 $this->skin->set_result($result);
319                 if ( is_wp_error($result) ) {
320                         $this->skin->error($result);
321                         $this->skin->feedback('process_failed');
322                 } else {
323                         //Install Suceeded
324                         $this->skin->feedback('process_success');
325                 }
326                 $this->skin->after();
327
328                 if ( !$is_multi )
329                         $this->skin->footer();
330
331                 return $result;
332         }
333
334         function maintenance_mode($enable = false) {
335                 global $wp_filesystem;
336                 $file = $wp_filesystem->abspath() . '.maintenance';
337                 if ( $enable ) {
338                         $this->skin->feedback('maintenance_start');
339                         // Create maintenance file to signal that we are upgrading
340                         $maintenance_string = '<?php $upgrading = ' . time() . '; ?>';
341                         $wp_filesystem->delete($file);
342                         $wp_filesystem->put_contents($file, $maintenance_string, FS_CHMOD_FILE);
343                 } else if ( !$enable && $wp_filesystem->exists($file) ) {
344                         $this->skin->feedback('maintenance_end');
345                         $wp_filesystem->delete($file);
346                 }
347         }
348
349 }
350
351 /**
352  * Plugin Upgrader class for WordPress Plugins, It is designed to upgrade/install plugins from a local zip, remote zip URL, or uploaded zip file.
353  *
354  * @TODO More Detailed docs, for methods as well.
355  *
356  * @package WordPress
357  * @subpackage Upgrader
358  * @since 2.8.0
359  */
360 class Plugin_Upgrader extends WP_Upgrader {
361
362         var $result;
363         var $bulk = false;
364         var $show_before = '';
365
366         function upgrade_strings() {
367                 $this->strings['up_to_date'] = __('The plugin is at the latest version.');
368                 $this->strings['no_package'] = __('Upgrade package not available.');
369                 $this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>.');
370                 $this->strings['unpack_package'] = __('Unpacking the update.');
371                 $this->strings['deactivate_plugin'] = __('Deactivating the plugin.');
372                 $this->strings['remove_old'] = __('Removing the old version of the plugin.');
373                 $this->strings['remove_old_failed'] = __('Could not remove the old plugin.');
374                 $this->strings['process_failed'] = __('Plugin upgrade Failed.');
375                 $this->strings['process_success'] = __('Plugin upgraded successfully.');
376         }
377
378         function install_strings() {
379                 $this->strings['no_package'] = __('Install package not available.');
380                 $this->strings['downloading_package'] = __('Downloading install package from <span class="code">%s</span>.');
381                 $this->strings['unpack_package'] = __('Unpacking the package.');
382                 $this->strings['installing_package'] = __('Installing the plugin.');
383                 $this->strings['process_failed'] = __('Plugin Install Failed.');
384                 $this->strings['process_success'] = __('Plugin Installed successfully.');
385         }
386
387         function install($package) {
388
389                 $this->init();
390                 $this->install_strings();
391
392                 $this->run(array(
393                                         'package' => $package,
394                                         'destination' => WP_PLUGIN_DIR,
395                                         'clear_destination' => false, //Do not overwrite files.
396                                         'clear_working' => true,
397                                         'hook_extra' => array()
398                                         ));
399
400                 // Force refresh of plugin update information
401                 delete_transient('update_plugins');
402
403         }
404
405         function upgrade($plugin) {
406
407                 $this->init();
408                 $this->upgrade_strings();
409
410                 $current = get_transient( 'update_plugins' );
411                 if ( !isset( $current->response[ $plugin ] ) ) {
412                         $this->skin->set_result(false);
413                         $this->skin->error('up_to_date');
414                         $this->skin->after();
415                         return false;
416                 }
417
418                 // Get the URL to the zip file
419                 $r = $current->response[ $plugin ];
420
421                 add_filter('upgrader_pre_install', array(&$this, 'deactivate_plugin_before_upgrade'), 10, 2);
422                 add_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'), 10, 4);
423                 //'source_selection' => array(&$this, 'source_selection'), //theres a track ticket to move up the directory for zip's which are made a bit differently, useful for non-.org plugins.
424
425                 $this->run(array(
426                                         'package' => $r->package,
427                                         'destination' => WP_PLUGIN_DIR,
428                                         'clear_destination' => true,
429                                         'clear_working' => true,
430                                         'hook_extra' => array(
431                                                                 'plugin' => $plugin
432                                         )
433                                 ));
434
435                 // Cleanup our hooks, incase something else does a upgrade on this connection.
436                 remove_filter('upgrader_pre_install', array(&$this, 'deactivate_plugin_before_upgrade'));
437                 remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'));
438
439                 if ( ! $this->result || is_wp_error($this->result) )
440                         return $this->result;
441
442                 // Force refresh of plugin update information
443                 delete_transient('update_plugins');
444         }
445
446         function bulk_upgrade($plugins) {
447
448                 $this->init();
449                 $this->bulk = true;
450                 $this->upgrade_strings();
451
452                 $current = get_transient( 'update_plugins' );
453
454                 add_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'), 10, 4);
455
456                 $this->skin->header();
457
458                 // Connect to the Filesystem first.
459                 $res = $this->fs_connect( array(WP_CONTENT_DIR, WP_PLUGIN_DIR) );
460                 if ( ! $res ) {
461                         $this->skin->footer();
462                         return false;
463                 }
464
465                 $this->maintenance_mode(true);
466
467                 $all = count($plugins);
468                 $i = 1;
469                 foreach ( $plugins as $plugin ) {
470
471                         $this->show_before = sprintf( '<h4>' . __('Updating plugin %1$d of %2$d...') . '</h4>', $i, $all );
472                         $i++;
473
474                         if ( !isset( $current->response[ $plugin ] ) ) {
475                                 $this->skin->set_result(false);
476                                 $this->skin->error('up_to_date');
477                                 $this->skin->after();
478                                 $results[$plugin] = false;
479                                 continue;
480                         }
481
482                         // Get the URL to the zip file
483                         $r = $current->response[ $plugin ];
484
485                         $this->skin->plugin_active = is_plugin_active($plugin);
486
487                         $result = $this->run(array(
488                                                 'package' => $r->package,
489                                                 'destination' => WP_PLUGIN_DIR,
490                                                 'clear_destination' => true,
491                                                 'clear_working' => true,
492                                                 'is_multi' => true,
493                                                 'hook_extra' => array(
494                                                                         'plugin' => $plugin
495                                                 )
496                                         ));
497
498                         $results[$plugin] = $this->result;
499
500                         // Prevent credentials auth screen from displaying multiple times
501                         if ( false === $result )
502                                 break;
503                 }
504                 $this->maintenance_mode(false);
505                 $this->skin->footer();
506
507                 // Cleanup our hooks, incase something else does a upgrade on this connection.
508                 remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'));
509
510                 // Force refresh of plugin update information
511                 delete_transient('update_plugins');
512
513                 return $results;
514         }
515
516         //return plugin info.
517         function plugin_info() {
518                 if ( ! is_array($this->result) )
519                         return false;
520                 if ( empty($this->result['destination_name']) )
521                         return false;
522
523                 $plugin = get_plugins('/' . $this->result['destination_name']); //Ensure to pass with leading slash
524                 if ( empty($plugin) )
525                         return false;
526
527                 $pluginfiles = array_keys($plugin); //Assume the requested plugin is the first in the list
528
529                 return $this->result['destination_name'] . '/' . $pluginfiles[0];
530         }
531
532         //Hooked to pre_install
533         function deactivate_plugin_before_upgrade($return, $plugin) {
534
535                 if ( is_wp_error($return) ) //Bypass.
536                         return $return;
537
538                 $plugin = isset($plugin['plugin']) ? $plugin['plugin'] : '';
539                 if ( empty($plugin) )
540                         return new WP_Error('bad_request', $this->strings['bad_request']);
541
542                 if ( is_plugin_active($plugin) ) {
543                         $this->skin->feedback('deactivate_plugin');
544                         //Deactivate the plugin silently, Prevent deactivation hooks from running.
545                         deactivate_plugins($plugin, true);
546                 }
547         }
548
549         //Hooked to upgrade_clear_destination
550         function delete_old_plugin($removed, $local_destination, $remote_destination, $plugin) {
551                 global $wp_filesystem;
552
553                 if ( is_wp_error($removed) )
554                         return $removed; //Pass errors through.
555
556                 $plugin = isset($plugin['plugin']) ? $plugin['plugin'] : '';
557                 if ( empty($plugin) )
558                         return new WP_Error('bad_request', $this->strings['bad_request']);
559
560                 $plugins_dir = $wp_filesystem->wp_plugins_dir();
561                 $this_plugin_dir = trailingslashit( dirname($plugins_dir . $plugin) );
562
563                 if ( ! $wp_filesystem->exists($this_plugin_dir) ) //If its already vanished.
564                         return $removed;
565
566                 // If plugin is in its own directory, recursively delete the directory.
567                 if ( strpos($plugin, '/') && $this_plugin_dir != $plugins_dir ) //base check on if plugin includes directory seperator AND that its not the root plugin folder
568                         $deleted = $wp_filesystem->delete($this_plugin_dir, true);
569                 else
570                         $deleted = $wp_filesystem->delete($plugins_dir . $plugin);
571
572                 if ( ! $deleted )
573                         return new WP_Error('remove_old_failed', $this->strings['remove_old_failed']);
574
575                 return $removed;
576         }
577 }
578
579 /**
580  * Theme Upgrader class for WordPress Themes, It is designed to upgrade/install themes from a local zip, remote zip URL, or uploaded zip file.
581  *
582  * @TODO More Detailed docs, for methods as well.
583  *
584  * @package WordPress
585  * @subpackage Upgrader
586  * @since 2.8.0
587  */
588 class Theme_Upgrader extends WP_Upgrader {
589
590         var $result;
591
592         function upgrade_strings() {
593                 $this->strings['up_to_date'] = __('The theme is at the latest version.');
594                 $this->strings['no_package'] = __('Upgrade package not available.');
595                 $this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>.');
596                 $this->strings['unpack_package'] = __('Unpacking the update.');
597                 $this->strings['remove_old'] = __('Removing the old version of the theme.');
598                 $this->strings['remove_old_failed'] = __('Could not remove the old theme.');
599                 $this->strings['process_failed'] = __('Theme upgrade Failed.');
600                 $this->strings['process_success'] = __('Theme upgraded successfully.');
601         }
602
603         function install_strings() {
604                 $this->strings['no_package'] = __('Install package not available.');
605                 $this->strings['downloading_package'] = __('Downloading install package from <span class="code">%s</span>.');
606                 $this->strings['unpack_package'] = __('Unpacking the package.');
607                 $this->strings['installing_package'] = __('Installing the theme.');
608                 $this->strings['process_failed'] = __('Theme Install Failed.');
609                 $this->strings['process_success'] = __('Theme Installed successfully.');
610         }
611
612         function install($package) {
613
614                 $this->init();
615                 $this->install_strings();
616
617                 $options = array(
618                                                 'package' => $package,
619                                                 'destination' => WP_CONTENT_DIR . '/themes',
620                                                 'clear_destination' => false, //Do not overwrite files.
621                                                 'clear_working' => true
622                                                 );
623
624                 $this->run($options);
625
626                 if ( ! $this->result || is_wp_error($this->result) )
627                         return $this->result;
628
629                 // Force refresh of theme update information
630                 delete_transient('update_themes');
631
632                 if ( empty($result['destination_name']) )
633                         return false;
634                 else
635                         return $result['destination_name'];
636         }
637
638         function upgrade($theme) {
639
640                 $this->init();
641                 $this->upgrade_strings();
642
643                 // Is an update available?
644                 $current = get_transient( 'update_themes' );
645                 if ( !isset( $current->response[ $theme ] ) ) {
646                         $this->skin->set_result(false);
647                         $this->skin->error('up_to_date');
648                         $this->skin->after();
649                         return false;
650                 }
651
652                 $r = $current->response[ $theme ];
653
654                 add_filter('upgrader_pre_install', array(&$this, 'current_before'), 10, 2);
655                 add_filter('upgrader_post_install', array(&$this, 'current_after'), 10, 2);
656                 add_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'), 10, 4);
657
658                 $options = array(
659                                                 'package' => $r['package'],
660                                                 'destination' => WP_CONTENT_DIR . '/themes',
661                                                 'clear_destination' => true,
662                                                 'clear_working' => true,
663                                                 'hook_extra' => array(
664                                                                                         'theme' => $theme
665                                                                                         )
666                                                 );
667
668                 $this->run($options);
669
670                 if ( ! $this->result || is_wp_error($this->result) )
671                         return $this->result;
672
673                 // Force refresh of theme update information
674                 delete_transient('update_themes');
675
676                 return true;
677         }
678
679         function current_before($return, $theme) {
680
681                 if ( is_wp_error($return) )
682                         return $return;
683
684                 $theme = isset($theme['theme']) ? $theme['theme'] : '';
685
686                 if ( $theme != get_stylesheet() ) //If not current
687                         return $return;
688                 //Change to maintainence mode now.
689                 $this->maintenance_mode(true);
690
691                 return $return;
692         }
693         function current_after($return, $theme) {
694                 if ( is_wp_error($return) )
695                         return $return;
696
697                 $theme = isset($theme['theme']) ? $theme['theme'] : '';
698
699                 if ( $theme != get_stylesheet() ) //If not current
700                         return $return;
701
702                 //Ensure stylesheet name hasnt changed after the upgrade:
703                 if ( $theme == get_stylesheet() && $theme != $this->result['destination_name'] ) {
704                         $theme_info = $this->theme_info();
705                         $stylesheet = $this->result['destination_name'];
706                         $template = !empty($theme_info['Template']) ? $theme_info['Template'] : $stylesheet;
707                         switch_theme($template, $stylesheet, true);
708                 }
709
710                 //Time to remove maintainence mode
711                 $this->maintenance_mode(false);
712                 return $return;
713         }
714
715         function delete_old_theme($removed, $local_destination, $remote_destination, $theme) {
716                 global $wp_filesystem;
717
718                 $theme = isset($theme['theme']) ? $theme['theme'] : '';
719
720                 if ( is_wp_error($removed) || empty($theme) )
721                         return $removed; //Pass errors through.
722
723                 $themes_dir = $wp_filesystem->wp_themes_dir();
724                 if ( $wp_filesystem->exists( trailingslashit($themes_dir) . $theme ) )
725                         if ( ! $wp_filesystem->delete( trailingslashit($themes_dir) . $theme, true ) )
726                                 return false;
727                 return true;
728         }
729
730         function theme_info() {
731                 if ( empty($this->result['destination_name']) )
732                         return false;
733                 return get_theme_data(WP_CONTENT_DIR . '/themes/' . $this->result['destination_name'] . '/style.css');
734         }
735
736 }
737
738 /**
739  * Core Upgrader class for WordPress. It allows for WordPress to upgrade itself in combiantion with the wp-admin/includes/update-core.php file
740  *
741  * @TODO More Detailed docs, for methods as well.
742  *
743  * @package WordPress
744  * @subpackage Upgrader
745  * @since 2.8.0
746  */
747 class Core_Upgrader extends WP_Upgrader {
748
749         function upgrade_strings() {
750                 $this->strings['up_to_date'] = __('WordPress is at the latest version.');
751                 $this->strings['no_package'] = __('Upgrade package not available.');
752                 $this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>.');
753                 $this->strings['unpack_package'] = __('Unpacking the update.');
754                 $this->strings['copy_failed'] = __('Could not copy files.');
755         }
756
757         function upgrade($current) {
758                 global $wp_filesystem;
759
760                 $this->init();
761                 $this->upgrade_strings();
762
763                 if ( !empty($feedback) )
764                         add_filter('update_feedback', $feedback);
765
766                 // Is an update available?
767                 if ( !isset( $current->response ) || $current->response == 'latest' )
768                         return new WP_Error('up_to_date', $this->strings['up_to_date']);
769
770                 $res = $this->fs_connect( array(ABSPATH, WP_CONTENT_DIR) );
771                 if ( is_wp_error($res) )
772                         return $res;
773
774                 $wp_dir = trailingslashit($wp_filesystem->abspath());
775
776                 $download = $this->download_package( $current->package );
777                 if ( is_wp_error($download) )
778                         return $download;
779
780                 $working_dir = $this->unpack_package( $download );
781                 if ( is_wp_error($working_dir) )
782                         return $working_dir;
783
784                 // Copy update-core.php from the new version into place.
785                 if ( !$wp_filesystem->copy($working_dir . '/wordpress/wp-admin/includes/update-core.php', $wp_dir . 'wp-admin/includes/update-core.php', true) ) {
786                         $wp_filesystem->delete($working_dir, true);
787                         return new WP_Error('copy_failed', $this->strings['copy_failed']);
788                 }
789                 $wp_filesystem->chmod($wp_dir . 'wp-admin/includes/update-core.php', FS_CHMOD_FILE);
790
791                 require(ABSPATH . 'wp-admin/includes/update-core.php');
792
793                 return update_core($working_dir, $wp_dir);
794         }
795
796 }
797
798 /**
799  * Generic Skin for the WordPress Upgrader classes. This skin is designed to be extended for specific purposes.
800  *
801  * @TODO More Detailed docs, for methods as well.
802  *
803  * @package WordPress
804  * @subpackage Upgrader
805  * @since 2.8.0
806  */
807 class WP_Upgrader_Skin {
808
809         var $upgrader;
810         var $done_header = false;
811
812         function WP_Upgrader_Skin($args = array()) {
813                 return $this->__construct($args);
814         }
815         function __construct($args = array()) {
816                 $defaults = array( 'url' => '', 'nonce' => '', 'title' => '', 'context' => false );
817                 $this->options = wp_parse_args($args, $defaults);
818         }
819
820         function set_upgrader(&$upgrader) {
821                 if ( is_object($upgrader) )
822                         $this->upgrader =& $upgrader;
823         }
824         function set_result($result) {
825                 $this->result = $result;
826         }
827
828         function request_filesystem_credentials($error = false) {
829                 $url = $this->options['url'];
830                 $context = $this->options['context'];
831                 if ( !empty($this->options['nonce']) )
832                         $url = wp_nonce_url($url, $this->options['nonce']);
833                 return request_filesystem_credentials($url, '', $error, $context); //Possible to bring inline, Leaving as is for now.
834         }
835
836         function header() {
837                 if ( $this->done_header )
838                         return;
839                 $this->done_header = true;
840                 echo '<div class="wrap">';
841                 echo screen_icon();
842                 echo '<h2>' . $this->options['title'] . '</h2>';
843         }
844         function footer() {
845                 echo '</div>';
846         }
847
848         function error($errors) {
849                 if ( ! $this->done_header )
850                         $this->header();
851                 if ( is_string($errors) ) {
852                         $this->feedback($errors);
853                 } elseif ( is_wp_error($errors) && $errors->get_error_code() ) {
854                         foreach ( $errors->get_error_messages() as $message ) {
855                                 if ( $errors->get_error_data() )
856                                         $this->feedback($message . ' ' . $errors->get_error_data() );
857                                 else
858                                         $this->feedback($message);
859                         }
860                 }
861         }
862
863         function feedback($string) {
864                 if ( isset( $this->upgrader->strings[$string] ) )
865                         $string = $this->upgrader->strings[$string];
866
867                 if ( strpos($string, '%') !== false ) {
868                         $args = func_get_args();
869                         $args = array_splice($args, 1);
870                         if ( !empty($args) )
871                                 $string = vsprintf($string, $args);
872                 }
873                 if ( empty($string) )
874                         return;
875                 show_message($string);
876         }
877         function before() {}
878         function after() {}
879
880 }
881
882 /**
883  * Plugin Upgrader Skin for WordPress Plugin Upgrades.
884  *
885  * @TODO More Detailed docs, for methods as well.
886  *
887  * @package WordPress
888  * @subpackage Upgrader
889  * @since 2.8.0
890  */
891 class Plugin_Upgrader_Skin extends WP_Upgrader_Skin {
892         var $plugin = '';
893         var $plugin_active = false;
894
895         function Plugin_Upgrader_Skin($args = array()) {
896                 return $this->__construct($args);
897         }
898
899         function __construct($args = array()) {
900                 $defaults = array( 'url' => '', 'plugin' => '', 'nonce' => '', 'title' => __('Upgrade Plugin') );
901                 $args = wp_parse_args($args, $defaults);
902
903                 $this->plugin = $args['plugin'];
904
905                 $this->plugin_active = is_plugin_active($this->plugin);
906
907                 parent::__construct($args);
908         }
909
910         function after() {
911                 if ( $this->upgrader->bulk )
912                         return;
913
914                 $this->plugin = $this->upgrader->plugin_info();
915                 if( !empty($this->plugin) && !is_wp_error($this->result) && $this->plugin_active ){
916                         show_message(__('Attempting reactivation of the plugin'));
917                         echo '<iframe style="border:0;overflow:hidden" width="100%" height="170px" src="' . wp_nonce_url('update.php?action=activate-plugin&plugin=' . $this->plugin, 'activate-plugin_' . $this->plugin) .'"></iframe>';
918                 }
919
920                 $update_actions =  array(
921                         '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>',
922                         'plugins_page' => '<a href="' . admin_url('plugins.php') . '" title="' . esc_attr__('Goto plugins page') . '" target="_parent">' . __('Return to Plugins page') . '</a>'
923                 );
924                 if ( $this->plugin_active )
925                         unset( $update_actions['activate_plugin'] );
926                 if ( ! $this->result || is_wp_error($this->result) )
927                         unset( $update_actions['activate_plugin'] );
928
929                 $update_actions = apply_filters('update_plugin_complete_actions', $update_actions, $this->plugin);
930                 if ( ! empty($update_actions) )
931                         $this->feedback('<strong>' . __('Actions:') . '</strong> ' . implode(' | ', (array)$update_actions));
932         }
933
934         function before() {
935                 if ( $this->upgrader->show_before ) {
936                         echo $this->upgrader->show_before;
937                         $this->upgrader->show_before = '';
938                 }
939         }
940 }
941
942 /**
943  * Plugin Installer Skin for WordPress Plugin Installer.
944  *
945  * @TODO More Detailed docs, for methods as well.
946  *
947  * @package WordPress
948  * @subpackage Upgrader
949  * @since 2.8.0
950  */
951 class Plugin_Installer_Skin extends WP_Upgrader_Skin {
952         var $api;
953         var $type;
954
955         function Plugin_Installer_Skin($args = array()) {
956                 return $this->__construct($args);
957         }
958
959         function __construct($args = array()) {
960                 $defaults = array( 'type' => 'web', 'url' => '', 'plugin' => '', 'nonce' => '', 'title' => '' );
961                 $args = wp_parse_args($args, $defaults);
962
963                 $this->type = $args['type'];
964                 $this->api = isset($args['api']) ? $args['api'] : array();
965
966                 parent::__construct($args);
967         }
968
969         function before() {
970                 if ( !empty($this->api) )
971                         $this->upgrader->strings['process_success'] = sprintf( __('Successfully installed the plugin <strong>%s %s</strong>.'), $this->api->name, $this->api->version);
972         }
973
974         function after() {
975
976                 $plugin_file = $this->upgrader->plugin_info();
977
978                 $install_actions = array(
979                         '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>',
980                                                         );
981
982                 if ( $this->type == 'web' )
983                         $install_actions['plugins_page'] = '<a href="' . admin_url('plugin-install.php') . '" title="' . esc_attr__('Return to Plugin Installer') . '" target="_parent">' . __('Return to Plugin Installer') . '</a>';
984                 else
985                         $install_actions['plugins_page'] = '<a href="' . admin_url('plugins.php') . '" title="' . esc_attr__('Return to Plugins page') . '" target="_parent">' . __('Return to Plugins page') . '</a>';
986
987
988                 if ( ! $this->result || is_wp_error($this->result) )
989                         unset( $install_actions['activate_plugin'] );
990
991                 $install_actions = apply_filters('install_plugin_complete_actions', $install_actions, $this->api, $plugin_file);
992                 if ( ! empty($install_actions) )
993                         $this->feedback('<strong>' . __('Actions:') . '</strong> ' . implode(' | ', (array)$install_actions));
994         }
995 }
996
997 /**
998  * Theme Installer Skin for the WordPress Theme Installer.
999  *
1000  * @TODO More Detailed docs, for methods as well.
1001  *
1002  * @package WordPress
1003  * @subpackage Upgrader
1004  * @since 2.8.0
1005  */
1006 class Theme_Installer_Skin extends WP_Upgrader_Skin {
1007         var $api;
1008         var $type;
1009
1010         function Theme_Installer_Skin($args = array()) {
1011                 return $this->__construct($args);
1012         }
1013
1014         function __construct($args = array()) {
1015                 $defaults = array( 'type' => 'web', 'url' => '', 'theme' => '', 'nonce' => '', 'title' => '' );
1016                 $args = wp_parse_args($args, $defaults);
1017
1018                 $this->type = $args['type'];
1019                 $this->api = isset($args['api']) ? $args['api'] : array();
1020
1021                 parent::__construct($args);
1022         }
1023
1024         function before() {
1025                 if ( !empty($this->api) ) {
1026                         /* translators: 1: theme name, 2: version */
1027                         $this->upgrader->strings['process_success'] = sprintf( __('Successfully installed the theme <strong>%1$s %2$s</strong>.'), $this->api->name, $this->api->version);
1028                 }
1029         }
1030
1031         function after() {
1032                 if ( empty($this->upgrader->result['destination_name']) )
1033                         return;
1034
1035                 $theme_info = $this->upgrader->theme_info();
1036                 if ( empty($theme_info) )
1037                         return;
1038                 $name = $theme_info['Name'];
1039                 $stylesheet = $this->upgrader->result['destination_name'];
1040                 $template = !empty($theme_info['Template']) ? $theme_info['Template'] : $stylesheet;
1041
1042                 $preview_link = htmlspecialchars( add_query_arg( array('preview' => 1, 'template' => $template, 'stylesheet' => $stylesheet, 'TB_iframe' => 'true' ), trailingslashit(esc_url(get_option('home'))) ) );
1043                 $activate_link = wp_nonce_url("themes.php?action=activate&amp;template=" . urlencode($template) . "&amp;stylesheet=" . urlencode($stylesheet), 'switch-theme_' . $template);
1044
1045                 $install_actions = array(
1046                         'preview' => '<a href="' . $preview_link . '" class="thickbox thickbox-preview" title="' . esc_attr(sprintf(__('Preview &#8220;%s&#8221;'), $name)) . '">' . __('Preview') . '</a>',
1047                         'activate' => '<a href="' . $activate_link .  '" class="activatelink" title="' . esc_attr( sprintf( __('Activate &#8220;%s&#8221;'), $name ) ) . '">' . __('Activate') . '</a>'
1048                                                         );
1049
1050                 if ( $this->type == 'web' )
1051                         $install_actions['themes_page'] = '<a href="' . admin_url('theme-install.php') . '" title="' . esc_attr__('Return to Theme Installer') . '" target="_parent">' . __('Return to Theme Installer') . '</a>';
1052                 else
1053                         $install_actions['themes_page'] = '<a href="' . admin_url('themes.php') . '" title="' . esc_attr__('Themes page') . '" target="_parent">' . __('Return to Themes page') . '</a>';
1054
1055                 if ( ! $this->result || is_wp_error($this->result) )
1056                         unset( $install_actions['activate'], $install_actions['preview'] );
1057
1058                 $install_actions = apply_filters('install_theme_complete_actions', $install_actions, $this->api, $stylesheet, $theme_info);
1059                 if ( ! empty($install_actions) )
1060                         $this->feedback('<strong>' . __('Actions:') . '</strong> ' . implode(' | ', (array)$install_actions));
1061         }
1062 }
1063
1064 /**
1065  * Theme Upgrader Skin for WordPress Theme Upgrades.
1066  *
1067  * @TODO More Detailed docs, for methods as well.
1068  *
1069  * @package WordPress
1070  * @subpackage Upgrader
1071  * @since 2.8.0
1072  */
1073 class Theme_Upgrader_Skin extends WP_Upgrader_Skin {
1074         var $theme = '';
1075
1076         function Theme_Upgrader_Skin($args = array()) {
1077                 return $this->__construct($args);
1078         }
1079
1080         function __construct($args = array()) {
1081                 $defaults = array( 'url' => '', 'theme' => '', 'nonce' => '', 'title' => __('Upgrade Theme') );
1082                 $args = wp_parse_args($args, $defaults);
1083
1084                 $this->theme = $args['theme'];
1085
1086                 parent::__construct($args);
1087         }
1088
1089         function after() {
1090
1091                 if ( !empty($this->upgrader->result['destination_name']) &&
1092                         ($theme_info = $this->upgrader->theme_info()) &&
1093                         !empty($theme_info) ) {
1094
1095                         $name = $theme_info['Name'];
1096                         $stylesheet = $this->upgrader->result['destination_name'];
1097                         $template = !empty($theme_info['Template']) ? $theme_info['Template'] : $stylesheet;
1098
1099                         $preview_link = htmlspecialchars( add_query_arg( array('preview' => 1, 'template' => $template, 'stylesheet' => $stylesheet, 'TB_iframe' => 'true' ), trailingslashit(esc_url(get_option('home'))) ) );
1100                         $activate_link = wp_nonce_url("themes.php?action=activate&amp;template=" . urlencode($template) . "&amp;stylesheet=" . urlencode($stylesheet), 'switch-theme_' . $template);
1101
1102                         $update_actions =  array(
1103                                 'preview' => '<a href="' . $preview_link . '" class="thickbox thickbox-preview" title="' . esc_attr(sprintf(__('Preview &#8220;%s&#8221;'), $name)) . '">' . __('Preview') . '</a>',
1104                                 'activate' => '<a href="' . $activate_link .  '" class="activatelink" title="' . esc_attr( sprintf( __('Activate &#8220;%s&#8221;'), $name ) ) . '">' . __('Activate') . '</a>',
1105                         );
1106                         if ( ( ! $this->result || is_wp_error($this->result) ) || $stylesheet == get_stylesheet() )
1107                                 unset($update_actions['preview'], $update_actions['activate']);
1108                 }
1109
1110                 $update_actions['themes_page'] = '<a href="' . admin_url('themes.php') . '" title="' . esc_attr__('Return to Themes page') . '" target="_parent">' . __('Return to Themes page') . '</a>';
1111
1112                 $update_actions = apply_filters('update_theme_complete_actions', $update_actions, $this->theme);
1113                 if ( ! empty($update_actions) )
1114                         $this->feedback('<strong>' . __('Actions:') . '</strong> ' . implode(' | ', (array)$update_actions));
1115         }
1116 }
1117
1118 /**
1119  * 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.
1120  *
1121  * @TODO More Detailed docs, for methods as well.
1122  *
1123  * @package WordPress
1124  * @subpackage Upgrader
1125  * @since 2.8.0
1126  */
1127 class File_Upload_Upgrader {
1128         var $package;
1129         var $filename;
1130
1131         function File_Upload_Upgrader($form, $urlholder) {
1132                 return $this->__construct($form, $urlholder);
1133         }
1134         function __construct($form, $urlholder) {
1135                 if ( ! ( ( $uploads = wp_upload_dir() ) && false === $uploads['error'] ) )
1136                         wp_die($uploads['error']);
1137
1138                 if ( empty($_FILES[$form]['name']) && empty($_GET[$urlholder]) )
1139                         wp_die(__('Please select a file'));
1140
1141                 if ( !empty($_FILES) )
1142                         $this->filename = $_FILES[$form]['name'];
1143                 else if ( isset($_GET[$urlholder]) )
1144                         $this->filename = $_GET[$urlholder];
1145
1146                 //Handle a newly uploaded file, Else assume its already been uploaded
1147                 if ( !empty($_FILES) ) {
1148                         $this->filename = wp_unique_filename( $uploads['basedir'], $this->filename );
1149                         $this->package = $uploads['basedir'] . '/' . $this->filename;
1150
1151                         // Move the file to the uploads dir
1152                         if ( false === @ move_uploaded_file( $_FILES[$form]['tmp_name'], $this->package) )
1153                                 wp_die( sprintf( __('The uploaded file could not be moved to %s.' ), $uploads['path']));
1154                 } else {
1155                         $this->package = $uploads['basedir'] . '/' . $this->filename;
1156                 }
1157         }
1158 }