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<?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…' ), '<span class="code">%s</span>' );
$this->strings['unpack_package'] = __('Unpacking the update…');
$this->strings['remove_old'] = __('Removing the old version of the plugin…');
$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…' ), '<span class="code">%s</span>' );
$this->strings['unpack_package'] = __('Unpacking the package…');
$this->strings['installing_package'] = __('Installing the plugin…');
$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;
}
}