class-shortcode-cssg-filesystem.php

<?php
/**
 *
 * The Shortcode_CSSG_Filesystem is a slightly modified verstion of
 * the Redux_Filesystem class developed by the Redux Framework.
 *
 * The Redux Framework site: https://reduxframework.com
 *
 * @since      1.0.0
 *
 * @package    Shortcode Boilerplate
 * @subpackage Shortcode Boilerplate/includes
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

if ( ! class_exists( 'Shortcode_CSSG_Filesystem' ) ) {

    class Shortcode_CSSG_Filesystem {

        /**
         * Instance of this class.
         *
         * @since    1.0.0
         * @var      object
         */
        protected static $instance = null;

        protected static $direct = null;

        private $creds = array();

        public $fs_object = null;

        public $parent = null;

        public function __construct() {
            $this->parent->admin_notices[] = array(
                'type'    => 'error',
                'msg'     => '<strong>' . __( 'File Permission Issues', 'shortcode-cssg' ) . '</strong><br/>' . sprintf( __( 'We were unable to modify required files. Please check your permissions, or modify your wp-config.php file to contain your FTP login credentials as <a href="%s" target="_blank">outlined here</a>.', 'shortcode-cssg' ), 'https://codex.wordpress.org/Editing_wp-config.php#WordPress_Upgrade_Constants' ),
                'id'      => 'redux-wp-login',
                'dismiss' => false,
            );
        }

        /**
         * Return an instance of this class.
         *
         * @since     1.0.0
         * @return    object    A single instance of this class.
         */
        public static function get_instance( $parent = null ) {

            // If the single instance hasn't been set, set it now.
            if ( null == self::$instance ) {
                self::$instance = new self;
            }

            if ( $parent !== null ) {
                self::$instance->parent = $parent;
            }

            return self::$instance;
        }

        public function ftp_form() {
            if ( isset( $this->parent->ftp_form ) && ! empty( $this->parent->ftp_form ) ) {
                echo '<div class="wrap"><div class="error"><p>';
                echo '<strong>' . __( 'File Permission Issues', 'shortcode-cssg' ) . '</strong><br/>' . sprintf( __( 'We were unable to modify required files. Please ensure that <code>%1s</code> has the proper read-write permissions, or modify your wp-config.php file to contain your FTP login credentials as <a href="%2s" target="_blank">outlined here</a>.', 'shortcode-cssg' ), trailingslashit( WP_CONTENT_DIR ) . '/uploads/', 'https://codex.wordpress.org/Editing_wp-config.php#WordPress_Upgrade_Constants' );
                echo '</p></div><h2></h2>' . '</div>';
            }
        }

        function filesystem_init( $form_url, $method = '', $context = false, $fields = null ) {
            global $wp_filesystem;

            if ( ! empty( $this->creds ) ) {
                return true;
            }

            ob_start();

            /* first attempt to get credentials */
            if ( false === ( $this->creds = request_filesystem_credentials( $form_url, $method, false, $context ) ) ) {
                $this->creds            = array();
                $this->parent->ftp_form = ob_get_contents();
                ob_end_clean();

                /**
                 * if we comes here - we don't have credentials
                 * so the request for them is displaying
                 * no need for further processing
                 **/

                return false;
            }

            /* now we got some credentials - try to use them*/
            if ( ! WP_Filesystem( $this->creds ) ) {
                $this->creds = array();
                /* incorrect connection data - ask for credentials again, now with error message */
                request_filesystem_credentials( $form_url, '', true, $context );
                $this->parent->ftp_form = ob_get_contents();
                ob_end_clean();

                return false;
            }

            return true;
        }


        public static function load_direct() {
            if ( self::$direct === null ) {
                require_once ABSPATH . '/wp-admin/includes/class-wp-filesystem-base.php';
                require_once ABSPATH . '/wp-admin/includes/class-wp-filesystem-direct.php';
                self::$direct = new WP_Filesystem_Direct( array() );
            }
        }

        public function execute( $action, $file = '', $params = '' ) {

            if ( ! empty ( $params ) ) {
                extract( $params );
            }

            // Setup the filesystem with creds
            require_once ABSPATH . '/wp-admin/includes/template.php';
            require_once ABSPATH . '/wp-includes/pluggable.php';
            require_once ABSPATH . '/wp-admin/includes/file.php';

            $base = 'post.php?post=' . get_the_ID();

            $url = wp_nonce_url( $base );

            $this->filesystem_init( $url, 'direct', dirname( $file ) );

            return $this->do_action( $action, $file, $params );
        }

        public function do_action( $action, $file = '', $params = '' ) {

            if ( ! empty ( $params ) ) {
                extract( $params );
            }

            global $wp_filesystem;

            if ( ! isset( $params['chmod'] ) || ( isset( $params['chmod'] ) && empty( $params['chmod'] ) ) ) {
                if ( defined( 'FS_CHMOD_FILE' ) ) {
                    $chmod = FS_CHMOD_FILE;
                } else {
                    $chmod = 0644;
                }
            }
            $res = false;
            if ( ! isset( $recursive ) ) {
                $recursive = false;
            }

            //$target_dir = $wp_filesystem->find_folder( dirname( $file ) );

            // Do unique stuff
            if ( $action == 'mkdir' ) {

                if ( defined( 'FS_CHMOD_DIR' ) ) {
                    $chmod = FS_CHMOD_DIR;
                } else {
                    $chmod = 0755;
                }
                $res = $wp_filesystem->mkdir( $file );
                if ( ! $res ) {
                    wp_mkdir_p( $file );

                    $res = file_exists( $file );
                    if ( ! $res ) {
                        mkdir( $file, $chmod, true );
                        $res = file_exists( $file );
                    }
                }
            } elseif ( $action == 'rmdir' ) {
                $res = $wp_filesystem->rmdir( $file, $recursive );
            } elseif ( $action == 'copy' && ! isset( $this->filesystem->killswitch ) ) {
                if ( isset( $this->parent->ftp_form ) && ! empty( $this->parent->ftp_form ) ) {
                    $res = copy( $file, $destination );
                    if ( $res ) {
                        chmod( $destination, $chmod );
                    }
                } else {
                    $res = $wp_filesystem->copy( $file, $destination, $overwrite, $chmod );
                }
            } elseif ( $action == 'move' && ! isset( $this->filesystem->killswitch ) ) {
                $res = $wp_filesystem->copy( $file, $destination, $overwrite );
            } elseif ( $action == 'delete' ) {
                $res = $wp_filesystem->delete( $file, $recursive );
            } elseif ( $action == 'rmdir' ) {
                $res = $wp_filesystem->rmdir( $file, $recursive );
            } elseif ( $action == 'dirlist' ) {
                if ( ! isset( $include_hidden ) ) {
                    $include_hidden = true;
                }
                $res = $wp_filesystem->dirlist( $file, $include_hidden, $recursive );
            } elseif ( $action == 'put_contents' && ! isset( $this->filesystem->killswitch ) ) {
                // Write a string to a file
                if ( isset( $this->parent->ftp_form ) && ! empty( $this->parent->ftp_form ) ) {
                    self::load_direct();
                    $res = self::$direct->put_contents( $file, $content, $chmod );
                } else {
                    $res = $wp_filesystem->put_contents( $file, $content, $chmod );
                }
            } elseif ( $action == 'chown' ) {
                // Changes file owner
                if ( isset( $owner ) && ! empty( $owner ) ) {
                    $res = $wp_filesystem->chmod( $file, $chmod, $recursive );
                }
            } elseif ( $action == 'owner' ) {
                // Gets file owner
                $res = $wp_filesystem->owner( $file );
            } elseif ( $action == 'chmod' ) {

                if ( ! isset( $params['chmod'] ) || ( isset( $params['chmod'] ) && empty( $params['chmod'] ) ) ) {
                    $chmod = false;
                }

                $res = $wp_filesystem->chmod( $file, $chmod, $recursive );

            } elseif ( $action == 'get_contents' ) {
                // Reads entire file into a string
                if ( isset( $this->parent->ftp_form ) && ! empty( $this->parent->ftp_form ) ) {
                    self::load_direct();
                    $res = self::$direct->get_contents( $file );
                } else {
                    $res = $wp_filesystem->get_contents( $file );
                }
            } elseif ( $action == 'get_contents_array' ) {
                // Reads entire file into an array
                $res = $wp_filesystem->get_contents_array( $file );
            } elseif ( $action == 'object' ) {
                $res = $wp_filesystem;
            } elseif ( $action == 'unzip' ) {
                $unzipfile = unzip_file( $file, $destination );
                if ( $unzipfile ) {
                    $res = true;
                }
            }

            if ( ! $res ) {
                if ($action == 'dirlist') {
        if (empty($res) || $res == false || $res == '' ) {
                        return;
        }

                    if (is_array($res) && empty($res)) {
                        return;
                    }

                    if (!is_array($res)) {
                        if (count(glob("$file*")) == 0) {
                            return;
                        }
                    }
                }

                $this->killswitch              = true;
                $this->parent->admin_notices[] = array(
                    'type'    => 'error',
                    'msg'     => '<strong>' . __( 'File Permission Issues', 'shortcode-cssg' ) . '</strong><br/>' . sprintf( __( 'We were unable to modify required files. Please ensure that <code>%1s</code> has the proper read-write permissions, or modify your wp-config.php file to contain your FTP login credentials as <a href="%2s" target="_blank">outlined here</a>.', 'shortcode-cssg' ), trailingslashit( WP_CONTENT_DIR ) . '/uploads/', 'https://codex.wordpress.org/Editing_wp-config.php#WordPress_Upgrade_Constants' ),
                    'id'      => 'redux-wp-login',
                    'dismiss' => false,
                );
                //add_action( "redux/page/{$this->parent->args['opt_name']}/form/before", array(
                //    $this,
                //    'ftp_form'
                //) );
            }

            return $res;
        }
    }

    Shortcode_CSSG_Filesystem::get_instance();
}