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Path: ~/home/caidadmin/dev.pentathlon.sca-caid.org.old/wp-admin/includes/

File Content: `class-plugin-upgrader.php`

<?php
/**
 * Upgrade API: Plugin_Upgrader class
 *
 * @package WordPress
 * @subpackage Upgrader
 * @since 4.6.0
 */

/**
 * Core class used for upgrading/installing plugins.
 *
 * It is designed to upgrade/install plugins from a local zip, remote zip URL,
 * or uploaded zip file.
 *
 * @since 2.8.0
 * @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader.php.
 *
 * @see WP_Upgrader
 */
class Plugin_Upgrader extends WP_Upgrader {

	/**
	 * Plugin upgrade result.
	 *
	 * @since 2.8.0
	 * @var array|WP_Error $result
	 *
	 * @see WP_Upgrader::$result
	 */
	public $result;

	/**
	 * Whether a bulk upgrade/installation is being performed.
	 *
	 * @since 2.9.0
	 * @var bool $bulk
	 */
	public $bulk = false;

	/**
	 * Initialize the upgrade strings.
	 *
	 * @since 2.8.0
	 */
	public function upgrade_strings() {
		$this->strings['up_to_date'] = __('The plugin is at the latest version.');
		$this->strings['no_package'] = __('Update package not available.');
		/* translators: %s: package URL */
		$this->strings['downloading_package'] = sprintf( __( 'Downloading update from %s&#8230;' ), '<span class="code">%s</span>' );
		$this->strings['unpack_package'] = __('Unpacking the update&#8230;');
		$this->strings['remove_old'] = __('Removing the old version of the plugin&#8230;');
		$this->strings['remove_old_failed'] = __('Could not remove the old plugin.');
		$this->strings['process_failed'] = __('Plugin update failed.');
		$this->strings['process_success'] = __('Plugin updated successfully.');
		$this->strings['process_bulk_success'] = __('Plugins updated successfully.');
	}

	/**
	 * Initialize the installation strings.
	 *
	 * @since 2.8.0
	 */
	public function install_strings() {
		$this->strings['no_package'] = __('Installation package not available.');
		/* translators: %s: package URL */
		$this->strings['downloading_package'] = sprintf( __( 'Downloading installation package from %s&#8230;' ), '<span class="code">%s</span>' );
		$this->strings['unpack_package'] = __('Unpacking the package&#8230;');
		$this->strings['installing_package'] = __('Installing the plugin&#8230;');
		$this->strings['no_files'] = __('The plugin contains no files.');
		$this->strings['process_failed'] = __('Plugin installation failed.');
		$this->strings['process_success'] = __('Plugin installed successfully.');
	}

	/**
	 * Install a plugin package.
	 *
	 * @since 2.8.0
	 * @since 3.7.0 The `$args` parameter was added, making clearing the plugin update cache optional.
	 *
	 * @param string $package The full local path or URI of the package.
	 * @param array  $args {
	 *     Optional. Other arguments for installing a plugin package. Default empty array.
	 *
	 *     @type bool $clear_update_cache Whether to clear the plugin updates cache if successful.
	 *                                    Default true.
	 * }
	 * @return bool|WP_Error True if the installation was successful, false or a WP_Error otherwise.
	 */
	public function install( $package, $args = array() ) {

		$defaults = array(
			'clear_update_cache' => true,
		);
		$parsed_args = wp_parse_args( $args, $defaults );

		$this->init();
		$this->install_strings();

		add_filter('upgrader_source_selection', array($this, 'check_package') );
		if ( $parsed_args['clear_update_cache'] ) {
			// Clear cache so wp_update_plugins() knows about the new plugin.
			add_action( 'upgrader_process_complete', 'wp_clean_plugins_cache', 9, 0 );
		}

		$this->run( array(
			'package' => $package,
			'destination' => WP_PLUGIN_DIR,
			'clear_destination' => false, // Do not overwrite files.
			'clear_working' => true,
			'hook_extra' => array(
				'type' => 'plugin',
				'action' => 'install',
			)
		) );

		remove_action( 'upgrader_process_complete', 'wp_clean_plugins_cache', 9 );
		remove_filter('upgrader_source_selection', array($this, 'check_package') );

		if ( ! $this->result || is_wp_error($this->result) )
			return $this->result;

		// Force refresh of plugin update information
		wp_clean_plugins_cache( $parsed_args['clear_update_cache'] );

		return true;
	}

	/**
	 * Upgrade a plugin.
	 *
	 * @since 2.8.0
	 * @since 3.7.0 The `$args` parameter was added, making clearing the plugin update cache optional.
	 *
	 * @param string $plugin The basename path to the main plugin file.
	 * @param array  $args {
	 *     Optional. Other arguments for upgrading a plugin package. Default empty array.
	 *
	 *     @type bool $clear_update_cache Whether to clear the plugin updates cache if successful.
	 *                                    Default true.
	 * }
	 * @return bool|WP_Error True if the upgrade was successful, false or a WP_Error object otherwise.
	 */
	public function upgrade( $plugin, $args = array() ) {

		$defaults = array(
			'clear_update_cache' => true,
		);
		$parsed_args = wp_parse_args( $args, $defaults );

		$this->init();
		$this->upgrade_strings();

		$current = get_site_transient( 'update_plugins' );
		if ( !isset( $current->response[ $plugin ] ) ) {
			$this->skin->before();
			$this->skin->set_result(false);
			$this->skin->error('up_to_date');
			$this->skin->after();
			return false;
		}

		// Get the URL to the zip file
		$r = $current->response[ $plugin ];

		add_filter('upgrader_pre_install', array($this, 'deactivate_plugin_before_upgrade'), 10, 2);
		add_filter('upgrader_clear_destination', array($this, 'delete_old_plugin'), 10, 4);
		//'source_selection' => array($this, 'source_selection'), //there's a trac ticket to move up the directory for zip's which are made a bit differently, useful for non-.org plugins.
		if ( $parsed_args['clear_update_cache'] ) {
			// Clear cache so wp_update_plugins() knows about the new plugin.
			add_action( 'upgrader_process_complete', 'wp_clean_plugins_cache', 9, 0 );
		}

		$this->run( array(
			'package' => $r->package,
			'destination' => WP_PLUGIN_DIR,
			'clear_destination' => true,
			'clear_working' => true,
			'hook_extra' => array(
				'plugin' => $plugin,
				'type' => 'plugin',
				'action' => 'update',
			),
		) );

		// Cleanup our hooks, in case something else does a upgrade on this connection.
		remove_action( 'upgrader_process_complete', 'wp_clean_plugins_cache', 9 );
		remove_filter('upgrader_pre_install', array($this, 'deactivate_plugin_before_upgrade'));
		remove_filter('upgrader_clear_destination', array($this, 'delete_old_plugin'));

		if ( ! $this->result || is_wp_error($this->result) )
			return $this->result;

		// Force refresh of plugin update information
		wp_clean_plugins_cache( $parsed_args['clear_update_cache'] );

		return true;
	}

	/**
	 * Bulk upgrade several plugins at once.
	 *
	 * @since 2.8.0
	 * @since 3.7.0 The `$args` parameter was added, making clearing the plugin update cache optional.
	 *
	 * @param array $plugins Array of the basename paths of the plugins' main files.
	 * @param array $args {
	 *     Optional. Other arguments for upgrading several plugins at once. Default empty array.
	 *
	 *     @type bool $clear_update_cache Whether to clear the plugin updates cache if successful.
	 *                                    Default true.
	 * }
	 * @return array|false An array of results indexed by plugin file, or false if unable to connect to the filesystem.
	 */
	public function bulk_upgrade( $plugins, $args = array() ) {

		$defaults = array(
			'clear_update_cache' => true,
		);
		$parsed_args = wp_parse_args( $args, $defaults );

		$this->init();
		$this->bulk = true;
		$this->upgrade_strings();

		$current = get_site_transient( 'update_plugins' );

		add_filter('upgrader_clear_destination', array($this, 'delete_old_plugin'), 10, 4);

		$this->skin->header();

		// Connect to the Filesystem first.
		$res = $this->fs_connect( array(WP_CONTENT_DIR, WP_PLUGIN_DIR) );
		if ( ! $res ) {
			$this->skin->footer();
			return false;
		}

		$this->skin->bulk_header();

		/*
		 * Only start maintenance mode if:
		 * - running Multisite and there are one or more plugins specified, OR
		 * - a plugin with an update available is currently active.
		 * @TODO: For multisite, maintenance mode should only kick in for individual sites if at all possible.
		 */
		$maintenance = ( is_multisite() && ! empty( $plugins ) );
		foreach ( $plugins as $plugin )
			$maintenance = $maintenance || ( is_plugin_active( $plugin ) && isset( $current->response[ $plugin] ) );
		if ( $maintenance )
			$this->maintenance_mode(true);

		$results = array();

		$this->update_count = count($plugins);
		$this->update_current = 0;
		foreach ( $plugins as $plugin ) {
			$this->update_current++;
			$this->skin->plugin_info = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin, false, true);

			if ( !isset( $current->response[ $plugin ] ) ) {
				$this->skin->set_result('up_to_date');
				$this->skin->before();
				$this->skin->feedback('up_to_date');
				$this->skin->after();
				$results[$plugin] = true;
				continue;
			}

			// Get the URL to the zip file.
			$r = $current->response[ $plugin ];

			$this->skin->plugin_active = is_plugin_active($plugin);

			$result = $this->run( array(
				'package' => $r->package,
				'destination' => WP_PLUGIN_DIR,
				'clear_destination' => true,
				'clear_working' => true,
				'is_multi' => true,
				'hook_extra' => array(
					'plugin' => $plugin
				)
			) );

			$results[$plugin] = $this->result;

			// Prevent credentials auth screen from displaying multiple times
			if ( false === $result )
				break;
		} //end foreach $plugins

		$this->maintenance_mode(false);

		// Force refresh of plugin update information.
		wp_clean_plugins_cache( $parsed_args['clear_update_cache'] );

		/** This action is documented in wp-admin/includes/class-wp-upgrader.php */
		do_action( 'upgrader_process_complete', $this, array(
			'action' => 'update',
			'type' => 'plugin',
			'bulk' => true,
			'plugins' => $plugins,
		) );

		$this->skin->bulk_footer();

		$this->skin->footer();

		// Cleanup our hooks, in case something else does a upgrade on this connection.
		remove_filter('upgrader_clear_destination', array($this, 'delete_old_plugin'));

		return $results;
	}

	/**
	 * Check a source package to be sure it contains a plugin.
	 *
	 * This function is added to the {@see 'upgrader_source_selection'} filter by
	 * Plugin_Upgrader::install().
	 *
	 * @since 3.3.0
	 *
	 * @global WP_Filesystem_Base $wp_filesystem Subclass
	 *
	 * @param string $source The path to the downloaded package source.
	 * @return string|WP_Error The source as passed, or a WP_Error object
	 *                         if no plugins were found.
	 */
	public function check_package($source) {
		global $wp_filesystem;

		if ( is_wp_error($source) )
			return $source;

		$working_directory = str_replace( $wp_filesystem->wp_content_dir(), trailingslashit(WP_CONTENT_DIR), $source);
		if ( ! is_dir($working_directory) ) // Sanity check, if the above fails, let's not prevent installation.
			return $source;

		// Check the folder contains at least 1 valid plugin.
		$plugins_found = false;
		$files = glob( $working_directory . '*.php' );
		if ( $files ) {
			foreach ( $files as $file ) {
				$info = get_plugin_data( $file, false, false );
				if ( ! empty( $info['Name'] ) ) {
					$plugins_found = true;
					break;
				}
			}
		}

		if ( ! $plugins_found )
			return new WP_Error( 'incompatible_archive_no_plugins', $this->strings['incompatible_archive'], __( 'No valid plugins were found.' ) );

		return $source;
	}

	/**
	 * Retrieve the path to the file that contains the plugin info.
	 *
	 * This isn't used internally in the class, but is called by the skins.
	 *
	 * @since 2.8.0
	 *
	 * @return string|false The full path to the main plugin file, or false.
	 */
	public function plugin_info() {
		if ( ! is_array($this->result) )
			return false;
		if ( empty($this->result['destination_name']) )
			return false;

		$plugin = get_plugins('/' . $this->result['destination_name']); //Ensure to pass with leading slash
		if ( empty($plugin) )
			return false;

		$pluginfiles = array_keys($plugin); //Assume the requested plugin is the first in the list

		return $this->result['destination_name'] . '/' . $pluginfiles[0];
	}

	/**
	 * Deactivates a plugin before it is upgraded.
	 *
	 * Hooked to the {@see 'upgrader_pre_install'} filter by Plugin_Upgrader::upgrade().
	 *
	 * @since 2.8.0
	 * @since 4.1.0 Added a return value.
	 *
	 * @param bool|WP_Error  $return Upgrade offer return.
	 * @param array          $plugin Plugin package arguments.
	 * @return bool|WP_Error The passed in $return param or WP_Error.
	 */
	public function deactivate_plugin_before_upgrade($return, $plugin) {

		if ( is_wp_error($return) ) //Bypass.
			return $return;

		// When in cron (background updates) don't deactivate the plugin, as we require a browser to reactivate it
		if ( wp_doing_cron() )
			return $return;

		$plugin = isset($plugin['plugin']) ? $plugin['plugin'] : '';
		if ( empty($plugin) )
			return new WP_Error('bad_request', $this->strings['bad_request']);

		if ( is_plugin_active($plugin) ) {
			//Deactivate the plugin silently, Prevent deactivation hooks from running.
			deactivate_plugins($plugin, true);
		}

		return $return;
	}

	/**
	 * Delete the old plugin during an upgrade.
	 *
	 * Hooked to the {@see 'upgrader_clear_destination'} filter by
	 * Plugin_Upgrader::upgrade() and Plugin_Upgrader::bulk_upgrade().
	 *
	 * @since 2.8.0
	 *
	 * @global WP_Filesystem_Base $wp_filesystem Subclass
     *
	 * @param bool|WP_Error $removed
	 * @param string        $local_destination
	 * @param string        $remote_destination
	 * @param array         $plugin
	 * @return WP_Error|bool
	 */
	public function delete_old_plugin($removed, $local_destination, $remote_destination, $plugin) {
		global $wp_filesystem;

		if ( is_wp_error($removed) )
			return $removed; //Pass errors through.

		$plugin = isset($plugin['plugin']) ? $plugin['plugin'] : '';
		if ( empty($plugin) )
			return new WP_Error('bad_request', $this->strings['bad_request']);

		$plugins_dir = $wp_filesystem->wp_plugins_dir();
		$this_plugin_dir = trailingslashit( dirname($plugins_dir . $plugin) );

		if ( ! $wp_filesystem->exists($this_plugin_dir) ) //If it's already vanished.
			return $removed;

		// If plugin is in its own directory, recursively delete the directory.
		if ( strpos($plugin, '/') && $this_plugin_dir != $plugins_dir ) //base check on if plugin includes directory separator AND that it's not the root plugin folder
			$deleted = $wp_filesystem->delete($this_plugin_dir, true);
		else
			$deleted = $wp_filesystem->delete($plugins_dir . $plugin);

		if ( ! $deleted )
			return new WP_Error('remove_old_failed', $this->strings['remove_old_failed']);

		return true;
	}
}

Edit Rename Chmod Delete

FILE FOLDER

Name	Size	Permission
admin-filters.php	7177 bytes	0644
admin.php	2948 bytes	0644
ajax-actions.php	128972 bytes	0644
bookmark.php	9098 bytes	0644
class-automatic-upgrader-skin.php	3100 bytes	0644
class-bulk-plugin-upgrader-skin.php	1896 bytes	0644
class-bulk-theme-upgrader-skin.php	1940 bytes	0644
class-bulk-upgrader-skin.php	5200 bytes	0644
class-core-upgrader.php	13385 bytes	0644
class-file-upload-upgrader.php	3257 bytes	0644
class-ftp-pure.php	5399 bytes	0644
class-ftp-sockets.php	8448 bytes	0644
class-ftp.php	27097 bytes	0644
class-language-pack-upgrader-skin.php	2184 bytes	0644
class-language-pack-upgrader.php	11065 bytes	0644
class-pclzip.php	195795 bytes	0644
class-plugin-installer-skin.php	4306 bytes	0644
class-plugin-upgrader-skin.php	2556 bytes	0644
class-plugin-upgrader.php	14663 bytes	0644
class-theme-installer-skin.php	4081 bytes	0644
class-theme-upgrader-skin.php	3424 bytes	0644
class-theme-upgrader.php	19500 bytes	0644
class-walker-category-checklist.php	4214 bytes	0644
class-walker-nav-menu-checklist.php	4929 bytes	0644
class-walker-nav-menu-edit.php	11204 bytes	0644
class-wp-ajax-upgrader-skin.php	3074 bytes	0644
class-wp-automatic-updater.php	34032 bytes	0644
class-wp-comments-list-table.php	25638 bytes	0644
class-wp-community-events.php	15926 bytes	0644
class-wp-filesystem-base.php	22184 bytes	0644
class-wp-filesystem-direct.php	11222 bytes	0644
class-wp-filesystem-ftpext.php	13465 bytes	0644
class-wp-filesystem-ftpsockets.php	10586 bytes	0644
class-wp-filesystem-ssh2.php	14963 bytes	0644
class-wp-importer.php	7342 bytes	0644
class-wp-internal-pointers.php	5521 bytes	0644
class-wp-links-list-table.php	7602 bytes	0644
class-wp-list-table-compat.php	1068 bytes	0644
class-wp-list-table.php	37340 bytes	0644
class-wp-media-list-table.php	22641 bytes	0644
class-wp-ms-sites-list-table.php	15556 bytes	0644
class-wp-ms-themes-list-table.php	20232 bytes	0644
class-wp-ms-users-list-table.php	12842 bytes	0644
class-wp-plugin-install-list-table.php	19348 bytes	0644
class-wp-plugins-list-table.php	32818 bytes	0644
class-wp-post-comments-list-table.php	1472 bytes	0644
class-wp-posts-list-table.php	52715 bytes	0644
class-wp-screen.php	35535 bytes	0644
class-wp-site-icon.php	6043 bytes	0644
class-wp-terms-list-table.php	17957 bytes	0644
class-wp-theme-install-list-table.php	14524 bytes	0644
class-wp-themes-list-table.php	9267 bytes	0644
class-wp-upgrader-skin.php	5061 bytes	0644
class-wp-upgrader-skins.php	1456 bytes	0644
class-wp-upgrader.php	33913 bytes	0644
class-wp-users-list-table.php	17282 bytes	0644
comment.php	5726 bytes	0644
continents-cities.php	19684 bytes	0644
credits.php	2192 bytes	0644
dashboard.php	63568 bytes	0644
deprecated.php	39173 bytes	0644
edit-tag-messages.php	1411 bytes	0644
export.php	22966 bytes	0644
file.php	82178 bytes	0644
image-edit.php	33553 bytes	0644
image.php	22097 bytes	0644
import.php	6246 bytes	0644
list-table.php	2648 bytes	0644
media.php	106323 bytes	0644
menu.php	8715 bytes	0644
meta-boxes.php	52225 bytes	0644
misc.php	64266 bytes	0644
ms-admin-filters.php	1387 bytes	0644
ms-deprecated.php	2860 bytes	0644
ms.php	35406 bytes	0644
nav-menu.php	42469 bytes	0644
network.php	23879 bytes	0644
noop.php	1222 bytes	0644
options.php	3832 bytes	0644
plugin-install.php	31700 bytes	0644
plugin.php	68668 bytes	0644
post.php	60833 bytes	0644
revision.php	14947 bytes	0644
schema.php	36233 bytes	0644
screen.php	6148 bytes	0644
taxonomy.php	7727 bytes	0644
template.php	80420 bytes	0644
theme-install.php	6286 bytes	0644
theme.php	28334 bytes	0644
translation-install.php	8551 bytes	0644
update-core.php	55770 bytes	0644
update.php	25873 bytes	0644
upgrade.php	95880 bytes	0644
user.php	50052 bytes	0644
widgets.php	10001 bytes	0644

File Content: class-plugin-upgrader.php

File Content: `class-plugin-upgrader.php`