<?php

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namespace WPForms\Helpers;

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if ( ! defined( 'ABSPATH' ) ) {

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exit;

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}

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use WP_Error;

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use WP_Upgrader;

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use WP_Filesystem_Base;

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/** \WP_Upgrader class */

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require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';

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/** \Plugin_Upgrader class */

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require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader.php';

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/**

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* In WP 5.3 a PHP 5.6 splat operator (...$args) was added to \WP_Upgrader_Skin::feedback().

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* We need to remove all calls to *Skin::feedback() method, as we can't override it in own Skins

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* without breaking support for PHP 5.3-5.5.

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*

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* @internal Please do not use this class outside of core WPForms development. May be removed at any time.

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*

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* @since 1.5.6.1

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*/

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class PluginSilentUpgrader extends \Plugin_Upgrader {

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/**

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* Run an upgrade/installation.

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*

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* Attempt to download the package (if it is not a local file), unpack it, and

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* install it in the destination folder.

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*

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* @since 1.5.6.1

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*

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* @param array $options {

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* Array or string of arguments for upgrading/installing a package.

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*

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* @type string $package The full path or URI of the package to install.

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* Default empty.

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* @type string $destination The full path to the destination folder.

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* Default empty.

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* @type bool $clear_destination Whether to delete any files already in the

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* destination folder. Default false.

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* @type bool $clear_working Whether to delete the files form the working

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* directory after copying to the destination.

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* Default false.

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* @type bool $abort_if_destination_exists Whether to abort the installation if the destination

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* folder already exists. When true, `$clear_destination`

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* should be false. Default true.

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* @type bool $is_multi Whether this run is one of multiple upgrade/installation

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* actions being performed in bulk. When true, the skin

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* WP_Upgrader::header() and WP_Upgrader::footer()

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* aren't called. Default false.

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* @type array $hook_extra Extra arguments to pass to the filter hooks called by

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* WP_Upgrader::run().

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* }

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* @return array|false|WP_error The result from self::install_package() on success, otherwise a WP_Error,

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* or false if unable to connect to the filesystem.

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*/

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public function run( $options ) {

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$defaults = [

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'package' => '', // Please always pass this.

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'destination' => '', // And this

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'clear_destination' => false,

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'abort_if_destination_exists' => true, // Abort if the Destination directory exists, Pass clear_destination as false please

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'clear_working' => true,

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'is_multi' => false,

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'hook_extra' => [], // Pass any extra $hook_extra args here, this will be passed to any hooked filters.

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];

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$options = wp_parse_args( $options, $defaults );

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/**

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* Filter the package options before running an update.

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*

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* See also {@see 'upgrader_process_complete'}.

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*

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* @since 4.3.0

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*

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* @param array $options {

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* Options used by the upgrader.

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*

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* @type string $package Package for update.

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* @type string $destination Update location.

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* @type bool $clear_destination Clear the destination resource.

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* @type bool $clear_working Clear the working resource.

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* @type bool $abort_if_destination_exists Abort if the Destination directory exists.

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* @type bool $is_multi Whether the upgrader is running multiple times.

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* @type array $hook_extra {

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* Extra hook arguments.

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*

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* @type string $action Type of action. Default 'update'.

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* @type string $type Type of update process. Accepts 'plugin', 'theme', or 'core'.

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* @type bool $bulk Whether the update process is a bulk update. Default true.

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* @type string $plugin Path to the plugin file relative to the plugins directory.

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* @type string $theme The stylesheet or template name of the theme.

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* @type string $language_update_type The language pack update type. Accepts 'plugin', 'theme',

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* or 'core'.

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* @type object $language_update The language pack update offer.

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* }

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* }

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*/

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$options = apply_filters( 'upgrader_package_options', $options );

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if ( ! $options['is_multi'] ) { // call $this->header separately if running multiple times

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$this->skin->header();

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}

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// Connect to the Filesystem first.

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$res = $this->fs_connect( [ WP_CONTENT_DIR, $options['destination'] ] );

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// Mainly for non-connected filesystem.

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if ( ! $res ) {

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if ( ! $options['is_multi'] ) {

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$this->skin->footer();

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}

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return false;

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}

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$this->skin->before();

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if ( is_wp_error( $res ) ) {

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$this->skin->error( $res );

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$this->skin->after();

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if ( ! $options['is_multi'] ) {

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$this->skin->footer();

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}

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return $res;

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}

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/*

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* Download the package (Note, This just returns the filename

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* of the file if the package is a local file)

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*/

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$download = $this->download_package( $options['package'], true );

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// Allow for signature soft-fail.

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// WARNING: This may be removed in the future.

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if ( is_wp_error( $download ) && $download->get_error_data( 'softfail-filename' ) ) {

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// Don't output the 'no signature could be found' failure message for now.

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if ( (string) $download->get_error_code() !== 'signature_verification_no_signature' || WP_DEBUG ) {

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// Outout the failure error as a normal feedback, and not as an error:

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//$this->skin->feedback( $download->get_error_message() );

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// Report this failure back to WordPress.org for debugging purposes.

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wp_version_check(

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[

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'signature_failure_code' => $download->get_error_code(),

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'signature_failure_data' => $download->get_error_data(),

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]

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);

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}

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// Pretend this error didn't happen.

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$download = $download->get_error_data( 'softfail-filename' );

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}

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if ( is_wp_error( $download ) ) {

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$this->skin->error( $download );

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$this->skin->after();

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if ( ! $options['is_multi'] ) {

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$this->skin->footer();

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}

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return $download;

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}

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$delete_package = ( (string) $download !== (string) $options['package'] ); // Do not delete a "local" file.

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// Unzips the file into a temporary directory.

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$working_dir = $this->unpack_package( $download, $delete_package );

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if ( is_wp_error( $working_dir ) ) {

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$this->skin->error( $working_dir );

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$this->skin->after();

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if ( ! $options['is_multi'] ) {

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$this->skin->footer();

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}

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return $working_dir;

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}

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// With the given options, this installs it to the destination directory.

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$result = $this->install_package(

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[

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'source' => $working_dir,

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'destination' => $options['destination'],

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'clear_destination' => $options['clear_destination'],

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'abort_if_destination_exists' => $options['abort_if_destination_exists'],

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'clear_working' => $options['clear_working'],

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'hook_extra' => $options['hook_extra'],

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]

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);

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$this->skin->set_result( $result );

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if ( is_wp_error( $result ) ) {

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$this->skin->error( $result );

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//$this->skin->feedback( 'process_failed' );

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} else {

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// Installation succeeded.

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//$this->skin->feedback( 'process_success' );

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}

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$this->skin->after();

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if ( ! $options['is_multi'] ) {

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/**

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* Fire when the upgrader process is complete.

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*

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* See also {@see 'upgrader_package_options'}.

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*

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* @since 3.6.0

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* @since 3.7.0 Added to WP_Upgrader::run().

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* @since 4.6.0 `$translations` was added as a possible argument to `$hook_extra`.

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*

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* @param WP_Upgrader $this WP_Upgrader instance. In other contexts, $this, might be a

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* Theme_Upgrader, Plugin_Upgrader, Core_Upgrade, or

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* Language_Pack_Upgrader instance.

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* @param array $hook_extra {

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* Array of bulk item update data.

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*

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* @type string $action Type of action. Default 'update'.

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* @type string $type Type of update process. Accepts 'plugin', 'theme', 'translation', or 'core'.

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* @type bool $bulk Whether the update process is a bulk update. Default true.

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* @type array $plugins Array of the basename paths of the plugins' main files.

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* @type array $themes The theme slugs.

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* @type array $translations {

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* Array of translations update data.

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*

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* @type string $language The locale the translation is for.

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* @type string $type Type of translation. Accepts 'plugin', 'theme', or 'core'.

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* @type string $slug Text domain the translation is for. The slug of a theme/plugin or

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* 'default' for core translations.

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* @type string $version The version of a theme, plugin, or core.

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* }

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* }

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*/

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do_action( 'upgrader_process_complete', $this, $options['hook_extra'] );

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$this->skin->footer();

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}

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return $result;

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}

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/**

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* Toggle maintenance mode for the site.

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*

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* Create/delete the maintenance file to enable/disable maintenance mode.

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*

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* @since 2.8.0

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*

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* @global WP_Filesystem_Base $wp_filesystem Subclass

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*

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* @param bool $enable True to enable maintenance mode, false to disable.

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*/

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public function maintenance_mode( $enable = false ) {

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global $wp_filesystem;

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$file = $wp_filesystem->abspath() . '.maintenance';

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if ( $enable ) {

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//$this->skin->feedback( 'maintenance_start' );

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// Create maintenance file to signal that we are upgrading

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$maintenance_string = '<?php $upgrading = ' . time() . '; ?>';

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$wp_filesystem->delete( $file );

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$wp_filesystem->put_contents( $file, $maintenance_string, FS_CHMOD_FILE );

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} elseif ( ! $enable && $wp_filesystem->exists( $file ) ) {

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//$this->skin->feedback( 'maintenance_end' );

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$wp_filesystem->delete( $file );

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}

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}

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/**

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* Download a package.

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*

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* @since 2.8.0

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* @since 5.5.0 Added the `$hook_extra` parameter.

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*

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* @param string $package The URI of the package. If this is the full path to an

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* existing local file, it will be returned untouched.

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* @param bool $check_signatures Whether to validate file signatures. Default false.

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* @param array $hook_extra Extra arguments to pass to the filter hooks. Default empty array.

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* @return string|WP_Error The full path to the downloaded package file, or a WP_Error object.

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*/

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public function download_package( $package, $check_signatures = false, $hook_extra = [] ) {

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/**

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* Filters whether to return the package.

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*

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* @since 3.7.0

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* @since 5.5.0 Added the `$hook_extra` parameter.

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*

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* @param bool $reply Whether to bail without returning the package.

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* Default false.

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* @param string $package The package file name.

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* @param WP_Upgrader $this The WP_Upgrader instance.

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* @param array $hook_extra Extra arguments passed to hooked filters.

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*/

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$reply = apply_filters( 'upgrader_pre_download', false, $package, $this, $hook_extra );

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if ( false !== $reply ) {

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return $reply;

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}

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if ( ! preg_match( '!^(http|https|ftp)://!i', $package ) && file_exists( $package ) ) { // Local file or remote?

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return $package; // Must be a local file.

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}

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if ( empty( $package ) ) {

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return new WP_Error( 'no_package', $this->strings['no_package'] );

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}

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//$this->skin->feedback( 'downloading_package', $package );

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$download_file = download_url( $package, 300, $check_signatures );

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if ( is_wp_error( $download_file ) && ! $download_file->get_error_data( 'softfail-filename' ) ) {

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return new WP_Error( 'download_failed', $this->strings['download_failed'], $download_file->get_error_message() );

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}

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return $download_file;

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}

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/**

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* Unpack a compressed package file.

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*

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* @since 2.8.0

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*

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* @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.

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*

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* @param string $package Full path to the package file.

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* @param bool $delete_package Optional. Whether to delete the package file after attempting

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* to unpack it. Default true.

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* @return string|WP_Error The path to the unpacked contents, or a WP_Error on failure.

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*/

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public function unpack_package( $package, $delete_package = true ) {

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global $wp_filesystem;

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//$this->skin->feedback( 'unpack_package' );

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$upgrade_folder = $wp_filesystem->wp_content_dir() . 'upgrade/';

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//Clean up contents of upgrade directory beforehand.

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$upgrade_files = $wp_filesystem->dirlist( $upgrade_folder );

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if ( ! empty( $upgrade_files ) ) {

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foreach ( $upgrade_files as $file ) {

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$wp_filesystem->delete( $upgrade_folder . $file['name'], true );

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}

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}

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// We need a working directory - Strip off any .tmp or .zip suffixes

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$working_dir = $upgrade_folder . basename( basename( $package, '.tmp' ), '.zip' );

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// Clean up working directory

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if ( $wp_filesystem->is_dir( $working_dir ) ) {

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$wp_filesystem->delete( $working_dir, true );

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}

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// Unzip package to working directory

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$result = unzip_file( $package, $working_dir );

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// Once extracted, delete the package if required.

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if ( $delete_package ) {

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// phpcs:ignore WordPress.WP.AlternativeFunctions.unlink_unlink

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unlink( $package );

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}

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if ( is_wp_error( $result ) ) {

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$wp_filesystem->delete( $working_dir, true );

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if ( $result->get_error_code() === 'incompatible_archive' ) {

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return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], $result->get_error_data() );

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}

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return $result;

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}

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return $working_dir;

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}

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/**

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* Install a package.

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*

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* Copies the contents of a package form a source directory, and installs them in

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* a destination directory. Optionally removes the source. It can also optionally

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* clear out the destination folder if it already exists.

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*

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* @since 2.8.0

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*

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* @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.

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* @global array $wp_theme_directories

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*

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* @param array|string $args {

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* Optional. Array or string of arguments for installing a package. Default empty array.

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*

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* @type string $source Required path to the package source. Default empty.

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* @type string $destination Required path to a folder to install the package in.

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* Default empty.

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* @type bool $clear_destination Whether to delete any files already in the destination

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* folder. Default false.

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* @type bool $clear_working Whether to delete the files form the working directory

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* after copying to the destination. Default false.

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* @type bool $abort_if_destination_exists Whether to abort the installation if

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* the destination folder already exists. Default true.

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* @type array $hook_extra Extra arguments to pass to the filter hooks called by

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* WP_Upgrader::install_package(). Default empty array.

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* }

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*

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* @return array|WP_Error The result (also stored in `WP_Upgrader::$result`), or a WP_Error on failure.

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*/

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public function install_package( $args = [] ) {

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global $wp_filesystem, $wp_theme_directories;

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$defaults = [

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'source' => '', // Please always pass this

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'destination' => '', // and this

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'clear_destination' => false,

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'clear_working' => false,

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'abort_if_destination_exists' => true,

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'hook_extra' => [],

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];

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$args = wp_parse_args( $args, $defaults );

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// These were previously extract()'d.

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$source = $args['source'];

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$destination = $args['destination'];

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$clear_destination = $args['clear_destination'];

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wpforms_set_time_limit( 300 );

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if ( empty( $source ) || empty( $destination ) ) {

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return new WP_Error( 'bad_request', $this->strings['bad_request'] );

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}

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//$this->skin->feedback( 'installing_package' );

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/**

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* Filter the install response before the installation has started.

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*

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* Returning a truthy value, or one that could be evaluated as a WP_Error

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* will effectively short-circuit the installation, returning that value

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* instead.

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*

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* @since 2.8.0

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*

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* @param bool|WP_Error $response Response.

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* @param array $hook_extra Extra arguments passed to hooked filters.

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*/

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$res = apply_filters( 'upgrader_pre_install', true, $args['hook_extra'] );

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if ( is_wp_error( $res ) ) {

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return $res;

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}

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// Retain the Original source and destinations.

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$remote_source = $args['source'];

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$local_destination = $destination;

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$source_files = array_keys( $wp_filesystem->dirlist( $remote_source ) );

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$remote_destination = $wp_filesystem->find_folder( $local_destination );

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$count_source_files = count( $source_files );

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// Locate which directory to copy to the new folder, This is based on the actual folder holding the files.

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if ( $count_source_files === 1 && $wp_filesystem->is_dir( trailingslashit( $args['source'] ) . $source_files[0] . '/' ) ) { // Only one folder? Then we want its contents.

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$source = trailingslashit( $args['source'] ) . trailingslashit( $source_files[0] );

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} elseif ( $count_source_files === 0 ) {

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return new WP_Error( 'incompatible_archive_empty', $this->strings['incompatible_archive'], $this->strings['no_files'] ); // There are no files?

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} else { // It's only a single file, the upgrader will use the folder name of this file as the destination folder. Folder name is based on zip filename.

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$source = trailingslashit( $args['source'] );

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}

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/**

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* Filter the source file location for the upgrade package.

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*

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* @since 2.8.0

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* @since 4.4.0 The $hook_extra parameter became available.

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*

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* @param string $source File source location.

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* @param string $remote_source Remote file source location.

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* @param WP_Upgrader $this WP_Upgrader instance.

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* @param array $hook_extra Extra arguments passed to hooked filters.

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*/

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$source = apply_filters( 'upgrader_source_selection', $source, $remote_source, $this, $args['hook_extra'] );

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if ( is_wp_error( $source ) ) {

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return $source;

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}

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// Has the source location changed? If so, we need a new source_files list.

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if ( $source !== $remote_source ) {

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$source_files = array_keys( $wp_filesystem->dirlist( $source ) );

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}

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/*

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* Protection against deleting files in any important base directories.

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* Theme_Upgrader & Plugin_Upgrader also trigger this, as they pass the

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* destination directory (WP_PLUGIN_DIR / wp-content/themes) intending

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* to copy the directory into the directory, whilst they pass the source

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* as the actual files to copy.

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*/

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