web/wp-admin/includes/class-wp-upgrader.php
branchwordpress
changeset 109 03b0d1493584
child 132 4d4862461b8d
equal deleted inserted replaced
-1:000000000000 109:03b0d1493584
       
     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 			if ( ABSPATH == $dir && ! $wp_filesystem->abspath() )
       
    85 				return new WP_Error('fs_no_root_dir', $this->strings['fs_no_root_dir']);
       
    86 
       
    87 			elseif ( WP_CONTENT_DIR == $dir && ! $wp_filesystem->wp_content_dir() )
       
    88 				return new WP_Error('fs_no_content_dir', $this->strings['fs_no_content_dir']);
       
    89 
       
    90 			elseif ( WP_PLUGIN_DIR == $dir && ! $wp_filesystem->wp_plugins_dir() )
       
    91 				return new WP_Error('fs_no_plugins_dir', $this->strings['fs_no_plugins_dir']);
       
    92 
       
    93 			elseif ( WP_CONTENT_DIR . '/themes' == $dir && ! $wp_filesystem->find_folder(WP_CONTENT_DIR . '/themes') )
       
    94 				return new WP_Error('fs_no_themes_dir', $this->strings['fs_no_themes_dir']);
       
    95 
       
    96 			elseif ( ! $wp_filesystem->find_folder($dir) )
       
    97 				return new WP_Error('fs_no_folder', sprintf($strings['fs_no_folder'], $dir));
       
    98 		}
       
    99 		return true;
       
   100 	} //end fs_connect();
       
   101 
       
   102 	function download_package($package) {
       
   103 
       
   104 		if ( ! preg_match('!^(http|https|ftp)://!i', $package) && file_exists($package) ) //Local file or remote?
       
   105 			return $package; //must be a local file..
       
   106 
       
   107 		if ( empty($package) )
       
   108 			return new WP_Error('no_package', $this->strings['no_package']);
       
   109 
       
   110 		$this->skin->feedback('downloading_package', $package);
       
   111 
       
   112 		$download_file = download_url($package);
       
   113 
       
   114 		if ( is_wp_error($download_file) )
       
   115 			return new WP_Error('download_failed', $this->strings['download_failed'], $download_file->get_error_message());
       
   116 
       
   117 		return $download_file;
       
   118 	}
       
   119 
       
   120 	function unpack_package($package, $delete_package = true) {
       
   121 		global $wp_filesystem;
       
   122 
       
   123 		$this->skin->feedback('unpack_package');
       
   124 
       
   125 		$upgrade_folder = $wp_filesystem->wp_content_dir() . 'upgrade/';
       
   126 
       
   127 		//Clean up contents of upgrade directory beforehand.
       
   128 		$upgrade_files = $wp_filesystem->dirlist($upgrade_folder);
       
   129 		if ( !empty($upgrade_files) ) {
       
   130 			foreach ( $upgrade_files as $file )
       
   131 				$wp_filesystem->delete($upgrade_folder . $file['name'], true);
       
   132 		}
       
   133 
       
   134 		//We need a working directory
       
   135 		$working_dir = $upgrade_folder . basename($package, '.zip');
       
   136 
       
   137 		// Clean up working directory
       
   138 		if ( $wp_filesystem->is_dir($working_dir) )
       
   139 			$wp_filesystem->delete($working_dir, true);
       
   140 
       
   141 		// Unzip package to working directory
       
   142 		$result = unzip_file($package, $working_dir); //TODO optimizations, Copy when Move/Rename would suffice?
       
   143 
       
   144 		// Once extracted, delete the package if required.
       
   145 		if ( $delete_package )
       
   146 			unlink($package);
       
   147 
       
   148 		if ( is_wp_error($result) ) {
       
   149 			$wp_filesystem->delete($working_dir, true);
       
   150 			return $result;
       
   151 		}
       
   152 
       
   153 		return $working_dir;
       
   154 	}
       
   155 
       
   156 	function install_package($args = array()) {
       
   157 		global $wp_filesystem;
       
   158 		$defaults = array( 'source' => '', 'destination' => '', //Please always pass these
       
   159 						'clear_destination' => false, 'clear_working' => false,
       
   160 						'hook_extra' => array());
       
   161 
       
   162 		$args = wp_parse_args($args, $defaults);
       
   163 		extract($args);
       
   164 
       
   165 		@set_time_limit( 300 );
       
   166 
       
   167 		if ( empty($source) || empty($destination) )
       
   168 			return new WP_Error('bad_request', $this->strings['bad_request']);
       
   169 
       
   170 		$this->skin->feedback('installing_package');
       
   171 
       
   172 		$res = apply_filters('upgrader_pre_install', true, $hook_extra);
       
   173 		if ( is_wp_error($res) )
       
   174 			return $res;
       
   175 
       
   176 		//Retain the Original source and destinations
       
   177 		$remote_source = $source;
       
   178 		$local_destination = $destination;
       
   179 
       
   180 		$source_files = array_keys( $wp_filesystem->dirlist($remote_source) );
       
   181 		$remote_destination = $wp_filesystem->find_folder($local_destination);
       
   182 
       
   183 		//Locate which directory to copy to the new folder, This is based on the actual folder holding the files.
       
   184 		if ( 1 == count($source_files) && $wp_filesystem->is_dir( trailingslashit($source) . $source_files[0] . '/') ) //Only one folder? Then we want its contents.
       
   185 			$source = trailingslashit($source) . trailingslashit($source_files[0]);
       
   186 		elseif ( count($source_files) == 0 )
       
   187 			return new WP_Error('bad_package', $this->strings['bad_package']); //There are no files?
       
   188 		//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.
       
   189 
       
   190 		//Hook ability to change the source file location..
       
   191 		$source = apply_filters('upgrader_source_selection', $source, $remote_source, $this);
       
   192 		if ( is_wp_error($source) )
       
   193 			return $source;
       
   194 
       
   195 		//Has the source location changed? If so, we need a new source_files list.
       
   196 		if ( $source !== $remote_source )
       
   197 			$source_files = array_keys( $wp_filesystem->dirlist($source) );
       
   198 
       
   199 		//Protection against deleting files in any important base directories.
       
   200 		if ( in_array( $destination, array(ABSPATH, WP_CONTENT_DIR, WP_PLUGIN_DIR, WP_CONTENT_DIR . '/themes') ) ) {
       
   201 			$remote_destination = trailingslashit($remote_destination) . trailingslashit(basename($source));
       
   202 			$destination = trailingslashit($destination) . trailingslashit(basename($source));
       
   203 		}
       
   204 
       
   205 		//If we're not clearing the destination folder, and something exists there allready, Bail.
       
   206 		if ( ! $clear_destination && $wp_filesystem->exists($remote_destination) ) {
       
   207 			$wp_filesystem->delete($remote_source, true); //Clear out the source files.
       
   208 			return new WP_Error('folder_exists', $this->strings['folder_exists'], $remote_destination );
       
   209 		} else if ( $clear_destination ) {
       
   210 			//We're going to clear the destination if theres something there
       
   211 			$this->skin->feedback('remove_old');
       
   212 
       
   213 			$removed = true;
       
   214 			if ( $wp_filesystem->exists($remote_destination) )
       
   215 				$removed = $wp_filesystem->delete($remote_destination, true);
       
   216 
       
   217 			$removed = apply_filters('upgrader_clear_destination', $removed, $local_destination, $remote_destination, $hook_extra);
       
   218 
       
   219 			if ( is_wp_error($removed) )
       
   220 				return $removed;
       
   221 			else if ( ! $removed )
       
   222 				return new WP_Error('remove_old_failed', $this->strings['remove_old_failed']);
       
   223 		}
       
   224 
       
   225 		//Create destination if needed
       
   226 		if ( !$wp_filesystem->exists($remote_destination) )
       
   227 			if ( !$wp_filesystem->mkdir($remote_destination, FS_CHMOD_DIR) )
       
   228 				return new WP_Error('mkdir_failed', $this->strings['mkdir_failed'], $remote_destination);
       
   229 
       
   230 		// Copy new version of item into place.
       
   231 		$result = copy_dir($source, $remote_destination);
       
   232 		if ( is_wp_error($result) ) {
       
   233 			if ( $clear_working )
       
   234 				$wp_filesystem->delete($remote_source, true);
       
   235 			return $result;
       
   236 		}
       
   237 
       
   238 		//Clear the Working folder?
       
   239 		if ( $clear_working )
       
   240 			$wp_filesystem->delete($remote_source, true);
       
   241 
       
   242 		$destination_name = basename( str_replace($local_destination, '', $destination) );
       
   243 		if ( '.' == $destination_name )
       
   244 			$destination_name = '';
       
   245 
       
   246 		$this->result = compact('local_source', 'source', 'source_name', 'source_files', 'destination', 'destination_name', 'local_destination', 'remote_destination', 'clear_destination', 'delete_source_dir');
       
   247 
       
   248 		$res = apply_filters('upgrader_post_install', true, $hook_extra, $this->result);
       
   249 		if ( is_wp_error($res) ) {
       
   250 			$this->result = $res;
       
   251 			return $res;
       
   252 		}
       
   253 
       
   254 		//Bombard the calling function will all the info which we've just used.
       
   255 		return $this->result;
       
   256 	}
       
   257 
       
   258 	function run($options) {
       
   259 
       
   260 		$defaults = array( 	'package' => '', //Please always pass this.
       
   261 							'destination' => '', //And this
       
   262 							'clear_destination' => false,
       
   263 							'clear_working' => true,
       
   264 							'hook_extra' => array() //Pass any extra $hook_extra args here, this will be passed to any hooked filters.
       
   265 						);
       
   266 
       
   267 		$options = wp_parse_args($options, $defaults);
       
   268 		extract($options);
       
   269 
       
   270 		//Connect to the Filesystem first.
       
   271 		$res = $this->fs_connect( array(WP_CONTENT_DIR, $destination) );
       
   272 		if ( ! $res ) //Mainly for non-connected filesystem.
       
   273 			return false;
       
   274 
       
   275 		if ( is_wp_error($res) ) {
       
   276 			$this->skin->error($res);
       
   277 			return $res;
       
   278 		}
       
   279 
       
   280 		$this->skin->header();
       
   281 		$this->skin->before();
       
   282 
       
   283 		//Download the package (Note, This just returns the filename of the file if the package is a local file)
       
   284 		$download = $this->download_package( $package );
       
   285 		if ( is_wp_error($download) ) {
       
   286 			$this->skin->error($download);
       
   287 			return $download;
       
   288 		}
       
   289 
       
   290 		//Unzip's the file into a temporary directory
       
   291 		$working_dir = $this->unpack_package( $download );
       
   292 		if ( is_wp_error($working_dir) ) {
       
   293 			$this->skin->error($working_dir);
       
   294 			return $working_dir;
       
   295 		}
       
   296 
       
   297 		//With the given options, this installs it to the destination directory.
       
   298 		$result = $this->install_package( array(
       
   299 											'source' => $working_dir,
       
   300 											'destination' => $destination,
       
   301 											'clear_destination' => $clear_destination,
       
   302 											'clear_working' => $clear_working,
       
   303 											'hook_extra' => $hook_extra
       
   304 										) );
       
   305 		$this->skin->set_result($result);
       
   306 		if ( is_wp_error($result) ) {
       
   307 			$this->skin->error($result);
       
   308 			$this->skin->feedback('process_failed');
       
   309 		} else {
       
   310 			//Install Suceeded
       
   311 			$this->skin->feedback('process_success');
       
   312 		}
       
   313 		$this->skin->after();
       
   314 		$this->skin->footer();
       
   315 		return $result;
       
   316 	}
       
   317 
       
   318 	function maintenance_mode($enable = false) {
       
   319 		global $wp_filesystem;
       
   320 		$file = $wp_filesystem->abspath() . '.maintenance';
       
   321 		if ( $enable ) {
       
   322 			$this->skin->feedback('maintenance_start');
       
   323 			// Create maintenance file to signal that we are upgrading
       
   324 			$maintenance_string = '<?php $upgrading = ' . time() . '; ?>';
       
   325 			$wp_filesystem->delete($file);
       
   326 			$wp_filesystem->put_contents($file, $maintenance_string, FS_CHMOD_FILE);
       
   327 		} else if ( !$enable && $wp_filesystem->exists($file) ) {
       
   328 			$this->skin->feedback('maintenance_end');
       
   329 			$wp_filesystem->delete($file);
       
   330 		}
       
   331 	}
       
   332 
       
   333 }
       
   334 
       
   335 /**
       
   336  * Plugin Upgrader class for WordPress Plugins, It is designed to upgrade/install plugins from a local zip, remote zip URL, or uploaded zip file.
       
   337  *
       
   338  * @TODO More Detailed docs, for methods as well.
       
   339  *
       
   340  * @package WordPress
       
   341  * @subpackage Upgrader
       
   342  * @since 2.8.0
       
   343  */
       
   344 class Plugin_Upgrader extends WP_Upgrader {
       
   345 
       
   346 	var $result;
       
   347 
       
   348 	function upgrade_strings() {
       
   349 		$this->strings['up_to_date'] = __('The plugin is at the latest version.');
       
   350 		$this->strings['no_package'] = __('Upgrade package not available.');
       
   351 		$this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>.');
       
   352 		$this->strings['unpack_package'] = __('Unpacking the update.');
       
   353 		$this->strings['deactivate_plugin'] = __('Deactivating the plugin.');
       
   354 		$this->strings['remove_old'] = __('Removing the old version of the plugin.');
       
   355 		$this->strings['remove_old_failed'] = __('Could not remove the old plugin.');
       
   356 		$this->strings['process_failed'] = __('Plugin upgrade Failed.');
       
   357 		$this->strings['process_success'] = __('Plugin upgraded successfully.');
       
   358 	}
       
   359 
       
   360 	function install_strings() {
       
   361 		$this->strings['no_package'] = __('Install package not available.');
       
   362 		$this->strings['downloading_package'] = __('Downloading install package from <span class="code">%s</span>.');
       
   363 		$this->strings['unpack_package'] = __('Unpacking the package.');
       
   364 		$this->strings['installing_package'] = __('Installing the plugin.');
       
   365 		$this->strings['process_failed'] = __('Plugin Install Failed.');
       
   366 		$this->strings['process_success'] = __('Plugin Installed successfully.');
       
   367 	}
       
   368 
       
   369 	function install($package) {
       
   370 
       
   371 		$this->init();
       
   372 		$this->install_strings();
       
   373 
       
   374 		$this->run(array(
       
   375 					'package' => $package,
       
   376 					'destination' => WP_PLUGIN_DIR,
       
   377 					'clear_destination' => false, //Do not overwrite files.
       
   378 					'clear_working' => true,
       
   379 					'hook_extra' => array()
       
   380 					));
       
   381 
       
   382 		// Force refresh of plugin update information
       
   383 		delete_transient('update_plugins');
       
   384 
       
   385 	}
       
   386 
       
   387 	function upgrade($plugin) {
       
   388 
       
   389 		$this->init();
       
   390 		$this->upgrade_strings();
       
   391 
       
   392 		$current = get_transient( 'update_plugins' );
       
   393 		if ( !isset( $current->response[ $plugin ] ) ) {
       
   394 			$this->skin->set_result(false);
       
   395 			$this->skin->error('up_to_date');
       
   396 			$this->skin->after();
       
   397 			return false;
       
   398 		}
       
   399 
       
   400 		// Get the URL to the zip file
       
   401 		$r = $current->response[ $plugin ];
       
   402 
       
   403 		add_filter('upgrader_pre_install', array(&$this, 'deactivate_plugin_before_upgrade'), 10, 2);
       
   404 		add_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'), 10, 4);
       
   405 		//'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.
       
   406 
       
   407 		$this->run(array(
       
   408 					'package' => $r->package,
       
   409 					'destination' => WP_PLUGIN_DIR,
       
   410 					'clear_destination' => true,
       
   411 					'clear_working' => true,
       
   412 					'hook_extra' => array(
       
   413 								'plugin' => $plugin
       
   414 					)
       
   415 				));
       
   416 
       
   417 		//Cleanup our hooks, incase something else does a upgrade on this connection.
       
   418 		remove_filter('upgrader_pre_install', array(&$this, 'deactivate_plugin_before_upgrade'));
       
   419 		remove_filter('upgrader_clear_destination', array(&$this, 'delete_old_plugin'));
       
   420 
       
   421 		if ( ! $this->result || is_wp_error($this->result) )
       
   422 			return $this->result;
       
   423 
       
   424 		// Force refresh of plugin update information
       
   425 		delete_transient('update_plugins');
       
   426 	}
       
   427 
       
   428 	//return plugin info.
       
   429 	function plugin_info() {
       
   430 		if ( ! is_array($this->result) )
       
   431 			return false;
       
   432 		if ( empty($this->result['destination_name']) )
       
   433 			return false;
       
   434 
       
   435 		$plugin = get_plugins('/' . $this->result['destination_name']); //Ensure to pass with leading slash
       
   436 		if ( empty($plugin) )
       
   437 			return false;
       
   438 
       
   439 		$pluginfiles = array_keys($plugin); //Assume the requested plugin is the first in the list
       
   440 
       
   441 		return $this->result['destination_name'] . '/' . $pluginfiles[0];
       
   442 	}
       
   443 
       
   444 	//Hooked to pre_install
       
   445 	function deactivate_plugin_before_upgrade($return, $plugin) {
       
   446 
       
   447 		if ( is_wp_error($return) ) //Bypass.
       
   448 			return $return;
       
   449 
       
   450 		$plugin = isset($plugin['plugin']) ? $plugin['plugin'] : '';
       
   451 		if ( empty($plugin) )
       
   452 			return new WP_Error('bad_request', $this->strings['bad_request']);
       
   453 
       
   454 		if ( is_plugin_active($plugin) ) {
       
   455 			$this->skin->feedback('deactivate_plugin');
       
   456 			//Deactivate the plugin silently, Prevent deactivation hooks from running.
       
   457 			deactivate_plugins($plugin, true);
       
   458 		}
       
   459 	}
       
   460 
       
   461 	//Hooked to upgrade_clear_destination
       
   462 	function delete_old_plugin($removed, $local_destination, $remote_destination, $plugin) {
       
   463 		global $wp_filesystem;
       
   464 
       
   465 		if ( is_wp_error($removed) )
       
   466 			return $removed; //Pass errors through.
       
   467 
       
   468 		$plugin = isset($plugin['plugin']) ? $plugin['plugin'] : '';
       
   469 		if ( empty($plugin) )
       
   470 			return new WP_Error('bad_request', $this->strings['bad_request']);
       
   471 
       
   472 		$plugins_dir = $wp_filesystem->wp_plugins_dir();
       
   473 		$this_plugin_dir = trailingslashit( dirname($plugins_dir . $plugin) );
       
   474 
       
   475 		if ( ! $wp_filesystem->exists($this_plugin_dir) ) //If its already vanished.
       
   476 			return $removed;
       
   477 
       
   478 		// If plugin is in its own directory, recursively delete the directory.
       
   479 		if ( strpos($plugin, '/') && $this_plugin_dir != $plugins_dir ) //base check on if plugin includes directory seperator AND that its not the root plugin folder
       
   480 			$deleted = $wp_filesystem->delete($this_plugin_dir, true);
       
   481 		else
       
   482 			$deleted = $wp_filesystem->delete($plugins_dir . $plugin);
       
   483 
       
   484 		if ( ! $deleted )
       
   485 			return new WP_Error('remove_old_failed', $this->strings['remove_old_failed']);
       
   486 
       
   487 		return $removed;
       
   488 	}
       
   489 }
       
   490 
       
   491 /**
       
   492  * Theme Upgrader class for WordPress Themes, It is designed to upgrade/install themes from a local zip, remote zip URL, or uploaded zip file.
       
   493  *
       
   494  * @TODO More Detailed docs, for methods as well.
       
   495  *
       
   496  * @package WordPress
       
   497  * @subpackage Upgrader
       
   498  * @since 2.8.0
       
   499  */
       
   500 class Theme_Upgrader extends WP_Upgrader {
       
   501 
       
   502 	var $result;
       
   503 
       
   504 	function upgrade_strings() {
       
   505 		$this->strings['up_to_date'] = __('The theme is at the latest version.');
       
   506 		$this->strings['no_package'] = __('Upgrade package not available.');
       
   507 		$this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>.');
       
   508 		$this->strings['unpack_package'] = __('Unpacking the update.');
       
   509 		$this->strings['remove_old'] = __('Removing the old version of the theme.');
       
   510 		$this->strings['remove_old_failed'] = __('Could not remove the old theme.');
       
   511 		$this->strings['process_failed'] = __('Theme upgrade Failed.');
       
   512 		$this->strings['process_success'] = __('Theme upgraded successfully.');
       
   513 	}
       
   514 
       
   515 	function install_strings() {
       
   516 		$this->strings['no_package'] = __('Install package not available.');
       
   517 		$this->strings['downloading_package'] = __('Downloading install package from <span class="code">%s</span>.');
       
   518 		$this->strings['unpack_package'] = __('Unpacking the package.');
       
   519 		$this->strings['installing_package'] = __('Installing the theme.');
       
   520 		$this->strings['process_failed'] = __('Theme Install Failed.');
       
   521 		$this->strings['process_success'] = __('Theme Installed successfully.');
       
   522 	}
       
   523 
       
   524 	function install($package) {
       
   525 
       
   526 		$this->init();
       
   527 		$this->install_strings();
       
   528 
       
   529 		$options = array(
       
   530 						'package' => $package,
       
   531 						'destination' => WP_CONTENT_DIR . '/themes',
       
   532 						'clear_destination' => false, //Do not overwrite files.
       
   533 						'clear_working' => true
       
   534 						);
       
   535 
       
   536 		$this->run($options);
       
   537 
       
   538 		if ( ! $this->result || is_wp_error($this->result) )
       
   539 			return $this->result;
       
   540 
       
   541 		// Force refresh of theme update information
       
   542 		delete_transient('update_themes');
       
   543 
       
   544 		if ( empty($result['destination_name']) )
       
   545 			return false;
       
   546 		else
       
   547 			return $result['destination_name'];
       
   548 	}
       
   549 
       
   550 	function upgrade($theme) {
       
   551 
       
   552 		$this->init();
       
   553 		$this->upgrade_strings();
       
   554 
       
   555 		// Is an update available?
       
   556 		$current = get_transient( 'update_themes' );
       
   557 		if ( !isset( $current->response[ $theme ] ) ) {
       
   558 			$this->skin->set_result(false);
       
   559 			$this->skin->error('up_to_date');
       
   560 			$this->skin->after();
       
   561 			return false;
       
   562 		}
       
   563 		
       
   564 		$r = $current->response[ $theme ];
       
   565 
       
   566 		add_filter('upgrader_pre_install', array(&$this, 'current_before'), 10, 2);
       
   567 		add_filter('upgrader_post_install', array(&$this, 'current_after'), 10, 2);
       
   568 		add_filter('upgrader_clear_destination', array(&$this, 'delete_old_theme'), 10, 4);
       
   569 
       
   570 		$options = array(
       
   571 						'package' => $r['package'],
       
   572 						'destination' => WP_CONTENT_DIR . '/themes',
       
   573 						'clear_destination' => true,
       
   574 						'clear_working' => true,
       
   575 						'hook_extra' => array(
       
   576 											'theme' => $theme
       
   577 											)
       
   578 						);
       
   579 
       
   580 		$this->run($options);
       
   581 
       
   582 		if ( ! $this->result || is_wp_error($this->result) )
       
   583 			return $this->result;
       
   584 
       
   585 		// Force refresh of theme update information
       
   586 		delete_transient('update_themes');
       
   587 
       
   588 		return true;
       
   589 	}
       
   590 
       
   591 	function current_before($return, $theme) {
       
   592 
       
   593 		if ( is_wp_error($return) )
       
   594 			return $return;
       
   595 
       
   596 		$theme = isset($theme['theme']) ? $theme['theme'] : '';
       
   597 
       
   598 		if ( $theme != get_stylesheet() ) //If not current
       
   599 			return $return;
       
   600 		//Change to maintainence mode now.
       
   601 		$this->maintenance_mode(true);
       
   602 
       
   603 		return $return;
       
   604 	}
       
   605 	function current_after($return, $theme) {
       
   606 		if ( is_wp_error($return) )
       
   607 			return $return;
       
   608 
       
   609 		$theme = isset($theme['theme']) ? $theme['theme'] : '';
       
   610 
       
   611 		if ( $theme != get_stylesheet() ) //If not current
       
   612 			return $return;
       
   613 
       
   614 		//Ensure stylesheet name hasnt changed after the upgrade:
       
   615 		if ( $theme == get_stylesheet() && $theme != $this->result['destination_name'] ) {
       
   616 			$theme_info = $this->theme_info();
       
   617 			$stylesheet = $this->result['destination_name'];
       
   618 			$template = !empty($theme_info['Template']) ? $theme_info['Template'] : $stylesheet;
       
   619 			switch_theme($template, $stylesheet, true);
       
   620 		}
       
   621 
       
   622 		//Time to remove maintainence mode
       
   623 		$this->maintenance_mode(false);
       
   624 		return $return;
       
   625 	}
       
   626 
       
   627 	function delete_old_theme($removed, $local_destination, $remote_destination, $theme) {
       
   628 		global $wp_filesystem;
       
   629 
       
   630 		$theme = isset($theme['theme']) ? $theme['theme'] : '';
       
   631 
       
   632 		if ( is_wp_error($removed) || empty($theme) )
       
   633 			return $removed; //Pass errors through.
       
   634 
       
   635 		$themes_dir = $wp_filesystem->wp_themes_dir();
       
   636 		if ( $wp_filesystem->exists( trailingslashit($themes_dir) . $theme ) )
       
   637 			if ( ! $wp_filesystem->delete( trailingslashit($themes_dir) . $theme, true ) )
       
   638 				return false;
       
   639 		return true;
       
   640 	}
       
   641 
       
   642 	function theme_info() {
       
   643 		if ( empty($this->result['destination_name']) )
       
   644 			return false;
       
   645 		return get_theme_data(WP_CONTENT_DIR . '/themes/' . $this->result['destination_name'] . '/style.css');
       
   646 	}
       
   647 
       
   648 }
       
   649 
       
   650 /**
       
   651  * Core Upgrader class for WordPress. It allows for WordPress to upgrade itself in combiantion with the wp-admin/includes/update-core.php file
       
   652  *
       
   653  * @TODO More Detailed docs, for methods as well.
       
   654  *
       
   655  * @package WordPress
       
   656  * @subpackage Upgrader
       
   657  * @since 2.8.0
       
   658  */
       
   659 class Core_Upgrader extends WP_Upgrader {
       
   660 
       
   661 	function upgrade_strings() {
       
   662 		$this->strings['up_to_date'] = __('WordPress is at the latest version.');
       
   663 		$this->strings['no_package'] = __('Upgrade package not available.');
       
   664 		$this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>.');
       
   665 		$this->strings['unpack_package'] = __('Unpacking the update.');
       
   666 		$this->strings['copy_failed'] = __('Could not copy files.');
       
   667 	}
       
   668 
       
   669 	function upgrade($current) {
       
   670 		global $wp_filesystem;
       
   671 
       
   672 		$this->init();
       
   673 		$this->upgrade_strings();
       
   674 
       
   675 		if ( !empty($feedback) )
       
   676 			add_filter('update_feedback', $feedback);
       
   677 
       
   678 		// Is an update available?
       
   679 		if ( !isset( $current->response ) || $current->response == 'latest' )
       
   680 			return new WP_Error('up_to_date', $this->strings['up_to_date']);
       
   681 
       
   682 		$res = $this->fs_connect( array(ABSPATH, WP_CONTENT_DIR) );
       
   683 		if ( is_wp_error($res) )
       
   684 			return $res;
       
   685 
       
   686 		$wp_dir = trailingslashit($wp_filesystem->abspath());
       
   687 
       
   688 		$download = $this->download_package( $current->package );
       
   689 		if ( is_wp_error($download) )
       
   690 			return $download;
       
   691 
       
   692 		$working_dir = $this->unpack_package( $download );
       
   693 		if ( is_wp_error($working_dir) )
       
   694 			return $working_dir;
       
   695 
       
   696 		// Copy update-core.php from the new version into place.
       
   697 		if ( !$wp_filesystem->copy($working_dir . '/wordpress/wp-admin/includes/update-core.php', $wp_dir . 'wp-admin/includes/update-core.php', true) ) {
       
   698 			$wp_filesystem->delete($working_dir, true);
       
   699 			return new WP_Error('copy_failed', $this->strings['copy_failed']);
       
   700 		}
       
   701 		$wp_filesystem->chmod($wp_dir . 'wp-admin/includes/update-core.php', FS_CHMOD_FILE);
       
   702 
       
   703 		require(ABSPATH . 'wp-admin/includes/update-core.php');
       
   704 
       
   705 		return update_core($working_dir, $wp_dir);
       
   706 	}
       
   707 
       
   708 }
       
   709 
       
   710 /**
       
   711  * Generic Skin for the WordPress Upgrader classes. This skin is designed to be extended for specific purposes.
       
   712  *
       
   713  * @TODO More Detailed docs, for methods as well.
       
   714  *
       
   715  * @package WordPress
       
   716  * @subpackage Upgrader
       
   717  * @since 2.8.0
       
   718  */
       
   719 class WP_Upgrader_Skin {
       
   720 
       
   721 	var $upgrader;
       
   722 	var $done_header = false;
       
   723 
       
   724 	function WP_Upgrader_Skin($args = array()) {
       
   725 		return $this->__construct($args);
       
   726 	}
       
   727 	function __construct($args = array()) {
       
   728 		$defaults = array( 'url' => '', 'nonce' => '', 'title' => '', 'context' => false );
       
   729 		$this->options = wp_parse_args($args, $defaults);
       
   730 	}
       
   731 
       
   732 	function set_upgrader(&$upgrader) {
       
   733 		if ( is_object($upgrader) )
       
   734 			$this->upgrader =& $upgrader;
       
   735 	}
       
   736 	function set_result($result) {
       
   737 		$this->result = $result;
       
   738 	}
       
   739 
       
   740 	function request_filesystem_credentials($error = false) {
       
   741 		$url = $this->options['url'];
       
   742 		$context = $this->options['context'];
       
   743 		if ( !empty($this->options['nonce']) )
       
   744 			$url = wp_nonce_url($url, $this->options['nonce']);
       
   745 		return request_filesystem_credentials($url, '', $error, $context); //Possible to bring inline, Leaving as is for now.
       
   746 	}
       
   747 
       
   748 	function header() {
       
   749 		if ( $this->done_header )
       
   750 			return;
       
   751 		$this->done_header = true;
       
   752 		echo '<div class="wrap">';
       
   753 		echo screen_icon();
       
   754 		echo '<h2>' . $this->options['title'] . '</h2>';
       
   755 	}
       
   756 	function footer() {
       
   757 		echo '</div>';
       
   758 	}
       
   759 
       
   760 	function error($errors) {
       
   761 		if ( ! $this->done_header )
       
   762 			$this->header();
       
   763 		if ( is_string($errors) ) {
       
   764 			$this->feedback($errors);
       
   765 		} elseif ( is_wp_error($errors) && $errors->get_error_code() ) {
       
   766 			foreach ( $errors->get_error_messages() as $message ) {
       
   767 				if ( $errors->get_error_data() )
       
   768 					$this->feedback($message . ' ' . $errors->get_error_data() );
       
   769 				else
       
   770 					$this->feedback($message);
       
   771 			}
       
   772 		}
       
   773 	}
       
   774 
       
   775 	function feedback($string) {
       
   776 		if ( isset( $this->upgrader->strings[$string] ) )
       
   777 			$string = $this->upgrader->strings[$string];
       
   778 
       
   779 		if ( strpos($string, '%') !== false ) {
       
   780 			$args = func_get_args();
       
   781 			$args = array_splice($args, 1);
       
   782 			if ( !empty($args) )
       
   783 				$string = vsprintf($string, $args);
       
   784 		}
       
   785 		if ( empty($string) )
       
   786 			return;
       
   787 		show_message($string);
       
   788 	}
       
   789 	function before() {}
       
   790 	function after() {}
       
   791 
       
   792 }
       
   793 
       
   794 /**
       
   795  * Plugin Upgrader Skin for WordPress Plugin Upgrades.
       
   796  *
       
   797  * @TODO More Detailed docs, for methods as well.
       
   798  *
       
   799  * @package WordPress
       
   800  * @subpackage Upgrader
       
   801  * @since 2.8.0
       
   802  */
       
   803 class Plugin_Upgrader_Skin extends WP_Upgrader_Skin {
       
   804 	var $plugin = '';
       
   805 	var $plugin_active = false;
       
   806 
       
   807 	function Plugin_Upgrader_Skin($args = array()) {
       
   808 		return $this->__construct($args);
       
   809 	}
       
   810 
       
   811 	function __construct($args = array()) {
       
   812 		$defaults = array( 'url' => '', 'plugin' => '', 'nonce' => '', 'title' => __('Upgrade Plugin') );
       
   813 		$args = wp_parse_args($args, $defaults);
       
   814 
       
   815 		$this->plugin = $args['plugin'];
       
   816 
       
   817 		$this->plugin_active = is_plugin_active($this->plugin);
       
   818 
       
   819 		parent::__construct($args);
       
   820 	}
       
   821 
       
   822 	function after() {
       
   823 		$this->plugin = $this->upgrader->plugin_info();
       
   824 		if( !empty($this->plugin) && !is_wp_error($this->result) && $this->plugin_active ){
       
   825 			show_message(__('Attempting reactivation of the plugin'));
       
   826 			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>';
       
   827 		}
       
   828 		$update_actions =  array(
       
   829 			'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>',
       
   830 			'plugins_page' => '<a href="' . admin_url('plugins.php') . '" title="' . esc_attr__('Goto plugins page') . '" target="_parent">' . __('Return to Plugins page') . '</a>'
       
   831 		);
       
   832 		if ( $this->plugin_active )
       
   833 			unset( $update_actions['activate_plugin'] );
       
   834 		if ( ! $this->result || is_wp_error($this->result) )
       
   835 			unset( $update_actions['activate_plugin'] );
       
   836 
       
   837 		$update_actions = apply_filters('update_plugin_complete_actions', $update_actions, $this->plugin);
       
   838 		if ( ! empty($update_actions) )
       
   839 			$this->feedback('<strong>' . __('Actions:') . '</strong> ' . implode(' | ', (array)$update_actions));
       
   840 	}
       
   841 }
       
   842 
       
   843 /**
       
   844  * Plugin Installer Skin for WordPress Plugin Installer.
       
   845  *
       
   846  * @TODO More Detailed docs, for methods as well.
       
   847  *
       
   848  * @package WordPress
       
   849  * @subpackage Upgrader
       
   850  * @since 2.8.0
       
   851  */
       
   852 class Plugin_Installer_Skin extends WP_Upgrader_Skin {
       
   853 	var $api;
       
   854 	var $type;
       
   855 
       
   856 	function Plugin_Installer_Skin($args = array()) {
       
   857 		return $this->__construct($args);
       
   858 	}
       
   859 
       
   860 	function __construct($args = array()) {
       
   861 		$defaults = array( 'type' => 'web', 'url' => '', 'plugin' => '', 'nonce' => '', 'title' => '' );
       
   862 		$args = wp_parse_args($args, $defaults);
       
   863 
       
   864 		$this->type = $args['type'];
       
   865 		$this->api = isset($args['api']) ? $args['api'] : array();
       
   866 
       
   867 		parent::__construct($args);
       
   868 	}
       
   869 
       
   870 	function before() {
       
   871 		if ( !empty($this->api) )
       
   872 			$this->upgrader->strings['process_success'] = sprintf( __('Successfully installed the plugin <strong>%s %s</strong>.'), $this->api->name, $this->api->version);
       
   873 	}
       
   874 
       
   875 	function after() {
       
   876 
       
   877 		$plugin_file = $this->upgrader->plugin_info();
       
   878 
       
   879 		$install_actions = array(
       
   880 			'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>',
       
   881 							);
       
   882 
       
   883 		if ( $this->type == 'web' )
       
   884 			$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>';
       
   885 		else
       
   886 			$install_actions['plugins_page'] = '<a href="' . admin_url('plugins.php') . '" title="' . esc_attr__('Return to Plugins page') . '" target="_parent">' . __('Return to Plugins page') . '</a>';
       
   887 
       
   888 
       
   889 		if ( ! $this->result || is_wp_error($this->result) )
       
   890 			unset( $install_actions['activate_plugin'] );
       
   891 
       
   892 		$install_actions = apply_filters('install_plugin_complete_actions', $install_actions, $this->api, $plugin_file);
       
   893 		if ( ! empty($install_actions) )
       
   894 			$this->feedback('<strong>' . __('Actions:') . '</strong> ' . implode(' | ', (array)$install_actions));
       
   895 	}
       
   896 }
       
   897 
       
   898 /**
       
   899  * Theme Installer Skin for the WordPress Theme Installer.
       
   900  *
       
   901  * @TODO More Detailed docs, for methods as well.
       
   902  *
       
   903  * @package WordPress
       
   904  * @subpackage Upgrader
       
   905  * @since 2.8.0
       
   906  */
       
   907 class Theme_Installer_Skin extends WP_Upgrader_Skin {
       
   908 	var $api;
       
   909 	var $type;
       
   910 
       
   911 	function Theme_Installer_Skin($args = array()) {
       
   912 		return $this->__construct($args);
       
   913 	}
       
   914 
       
   915 	function __construct($args = array()) {
       
   916 		$defaults = array( 'type' => 'web', 'url' => '', 'theme' => '', 'nonce' => '', 'title' => '' );
       
   917 		$args = wp_parse_args($args, $defaults);
       
   918 
       
   919 		$this->type = $args['type'];
       
   920 		$this->api = isset($args['api']) ? $args['api'] : array();
       
   921 
       
   922 		parent::__construct($args);
       
   923 	}
       
   924 
       
   925 	function before() {
       
   926 		if ( !empty($this->api) ) {
       
   927 			/* translators: 1: theme name, 2: version */
       
   928 			$this->upgrader->strings['process_success'] = sprintf( __('Successfully installed the theme <strong>%1$s %2$s</strong>.'), $this->api->name, $this->api->version);
       
   929 		}
       
   930 	}
       
   931 
       
   932 	function after() {
       
   933 		if ( empty($this->upgrader->result['destination_name']) )
       
   934 			return;
       
   935 
       
   936 		$theme_info = $this->upgrader->theme_info();
       
   937 		if ( empty($theme_info) )
       
   938 			return;
       
   939 		$name = $theme_info['Name'];
       
   940 		$stylesheet = $this->upgrader->result['destination_name'];
       
   941 		$template = !empty($theme_info['Template']) ? $theme_info['Template'] : $stylesheet;
       
   942 
       
   943 		$preview_link = htmlspecialchars( add_query_arg( array('preview' => 1, 'template' => $template, 'stylesheet' => $stylesheet, 'TB_iframe' => 'true' ), trailingslashit(esc_url(get_option('home'))) ) );
       
   944 		$activate_link = wp_nonce_url("themes.php?action=activate&amp;template=" . urlencode($template) . "&amp;stylesheet=" . urlencode($stylesheet), 'switch-theme_' . $template);
       
   945 
       
   946 		$install_actions = array(
       
   947 			'preview' => '<a href="' . $preview_link . '" class="thickbox thickbox-preview" title="' . esc_attr(sprintf(__('Preview &#8220;%s&#8221;'), $name)) . '">' . __('Preview') . '</a>',
       
   948 			'activate' => '<a href="' . $activate_link .  '" class="activatelink" title="' . esc_attr( sprintf( __('Activate &#8220;%s&#8221;'), $name ) ) . '">' . __('Activate') . '</a>'
       
   949 							);
       
   950 
       
   951 		if ( $this->type == 'web' )
       
   952 			$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>';
       
   953 		else
       
   954 			$install_actions['themes_page'] = '<a href="' . admin_url('themes.php') . '" title="' . esc_attr__('Themes page') . '" target="_parent">' . __('Return to Themes page') . '</a>';
       
   955 
       
   956 		if ( ! $this->result || is_wp_error($this->result) )
       
   957 			unset( $install_actions['activate'], $install_actions['preview'] );
       
   958 
       
   959 		$install_actions = apply_filters('install_theme_complete_actions', $install_actions, $this->api, $stylesheet, $theme_info);
       
   960 		if ( ! empty($install_actions) )
       
   961 			$this->feedback('<strong>' . __('Actions:') . '</strong> ' . implode(' | ', (array)$install_actions));
       
   962 	}
       
   963 }
       
   964 
       
   965 /**
       
   966  * Theme Upgrader Skin for WordPress Theme Upgrades.
       
   967  *
       
   968  * @TODO More Detailed docs, for methods as well.
       
   969  *
       
   970  * @package WordPress
       
   971  * @subpackage Upgrader
       
   972  * @since 2.8.0
       
   973  */
       
   974 class Theme_Upgrader_Skin extends WP_Upgrader_Skin {
       
   975 	var $theme = '';
       
   976 
       
   977 	function Theme_Upgrader_Skin($args = array()) {
       
   978 		return $this->__construct($args);
       
   979 	}
       
   980 
       
   981 	function __construct($args = array()) {
       
   982 		$defaults = array( 'url' => '', 'theme' => '', 'nonce' => '', 'title' => __('Upgrade Theme') );
       
   983 		$args = wp_parse_args($args, $defaults);
       
   984 
       
   985 		$this->theme = $args['theme'];
       
   986 
       
   987 		parent::__construct($args);
       
   988 	}
       
   989 
       
   990 	function after() {
       
   991 
       
   992 		if ( !empty($this->upgrader->result['destination_name']) &&
       
   993 			($theme_info = $this->upgrader->theme_info()) &&
       
   994 			!empty($theme_info) ) {
       
   995 
       
   996 			$name = $theme_info['Name'];
       
   997 			$stylesheet = $this->upgrader->result['destination_name'];
       
   998 			$template = !empty($theme_info['Template']) ? $theme_info['Template'] : $stylesheet;
       
   999 	
       
  1000 			$preview_link = htmlspecialchars( add_query_arg( array('preview' => 1, 'template' => $template, 'stylesheet' => $stylesheet, 'TB_iframe' => 'true' ), trailingslashit(esc_url(get_option('home'))) ) );
       
  1001 			$activate_link = wp_nonce_url("themes.php?action=activate&amp;template=" . urlencode($template) . "&amp;stylesheet=" . urlencode($stylesheet), 'switch-theme_' . $template);
       
  1002 	
       
  1003 			$update_actions =  array(
       
  1004 				'preview' => '<a href="' . $preview_link . '" class="thickbox thickbox-preview" title="' . esc_attr(sprintf(__('Preview &#8220;%s&#8221;'), $name)) . '">' . __('Preview') . '</a>',
       
  1005 				'activate' => '<a href="' . $activate_link .  '" class="activatelink" title="' . esc_attr( sprintf( __('Activate &#8220;%s&#8221;'), $name ) ) . '">' . __('Activate') . '</a>',
       
  1006 			);
       
  1007 			if ( ( ! $this->result || is_wp_error($this->result) ) || $stylesheet == get_stylesheet() )
       
  1008 				unset($update_actions['preview'], $update_actions['activate']);
       
  1009 		}
       
  1010 
       
  1011 		$update_actions['themes_page'] = '<a href="' . admin_url('themes.php') . '" title="' . esc_attr__('Return to Themes page') . '" target="_parent">' . __('Return to Themes page') . '</a>';
       
  1012 
       
  1013 		$update_actions = apply_filters('update_theme_complete_actions', $update_actions, $this->theme);
       
  1014 		if ( ! empty($update_actions) )
       
  1015 			$this->feedback('<strong>' . __('Actions:') . '</strong> ' . implode(' | ', (array)$update_actions));
       
  1016 	}
       
  1017 }
       
  1018 
       
  1019 /**
       
  1020  * 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.
       
  1021  *
       
  1022  * @TODO More Detailed docs, for methods as well.
       
  1023  *
       
  1024  * @package WordPress
       
  1025  * @subpackage Upgrader
       
  1026  * @since 2.8.0
       
  1027  */
       
  1028 class File_Upload_Upgrader {
       
  1029 	var $package;
       
  1030 	var $filename;
       
  1031 
       
  1032 	function File_Upload_Upgrader($form, $urlholder) {
       
  1033 		return $this->__construct($form, $urlholder);
       
  1034 	}
       
  1035 	function __construct($form, $urlholder) {
       
  1036 		if ( ! ( ( $uploads = wp_upload_dir() ) && false === $uploads['error'] ) )
       
  1037 			wp_die($uploads['error']);
       
  1038 
       
  1039 		if ( empty($_FILES[$form]['name']) && empty($_GET[$urlholder]) )
       
  1040 			wp_die(__('Please select a file'));
       
  1041 
       
  1042 		if ( !empty($_FILES) )
       
  1043 			$this->filename = $_FILES[$form]['name'];
       
  1044 		else if ( isset($_GET[$urlholder]) )
       
  1045 			$this->filename = $_GET[$urlholder];
       
  1046 
       
  1047 		//Handle a newly uploaded file, Else assume its already been uploaded
       
  1048 		if ( !empty($_FILES) ) {
       
  1049 			$this->filename = wp_unique_filename( $uploads['basedir'], $this->filename );
       
  1050 			$this->package = $uploads['basedir'] . '/' . $this->filename;
       
  1051 
       
  1052 			// Move the file to the uploads dir
       
  1053 			if ( false === @ move_uploaded_file( $_FILES[$form]['tmp_name'], $this->package) )
       
  1054 				wp_die( sprintf( __('The uploaded file could not be moved to %s.' ), $uploads['path']));
       
  1055 		} else {
       
  1056 			$this->package = $uploads['basedir'] . '/' . $this->filename;
       
  1057 		}
       
  1058 	}
       
  1059 }