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Linux v11800 5.3.0-1023-aws #25~18.04.1-Ubuntu SMP Fri Jun 5 15:19:18 UTC 2020 aarch64
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| Current File : /storage/v11800/affypharma/public_html/wp-content/plugins/elementor/core/files/uploads-manager.php |
<?php
namespace Elementor\Core\Files;
use Elementor\Core\Base\Base_Object;
use Elementor\Core\Common\Modules\Ajax\Module as Ajax;
use Elementor\Core\Files\File_Types\Base as File_Type_Base;
use Elementor\Core\Files\File_Types\Json;
use Elementor\Core\Files\File_Types\Svg;
use Elementor\Core\Files\File_Types\Zip;
use Elementor\Core\Utils\Exceptions;
use Elementor\User;
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly.
}
/**
* Elementor uploads manager.
*
* Elementor uploads manager handler class is responsible for handling file uploads that are not done with WP Media.
*
* @since 3.3.0
*/
class Uploads_Manager extends Base_Object {
const UNFILTERED_FILE_UPLOADS_KEY = 'elementor_unfiltered_files_upload';
const INVALID_FILE_CONTENT = 'Invalid Content In File';
/**
* @var File_Type_Base[]
*/
private $file_type_handlers = [];
private $allowed_file_extensions;
/**
* @var bool
*/
private $is_elementor_upload = false;
/**
* @var string
*/
private $temp_dir;
/**
* Register File Types
*
* To Add a new file type to Elementor, with its own handling logic, you need to add it to the $file_types array here.
*
* @since 3.3.0
* @access public
*/
public function register_file_types() {
// All file types that have handlers should be included here.
$file_types = [
'json' => new Json(),
'zip' => new Zip(),
'svg' => new Svg(),
];
foreach ( $file_types as $file_type => $file_handler ) {
$this->file_type_handlers[ $file_type ] = $file_handler;
}
}
/**
* Extract and Validate Zip
*
* This method accepts a $file array (which minimally should include a 'tmp_name')
*
* @since 3.3.0
* @access public
*
* @param string $file_path
* @param array $allowed_file_types
* @return array|\WP_Error
*/
public function extract_and_validate_zip( $file_path, $allowed_file_types = null ) {
$result = [];
/** @var Zip $zip_handler - File Type */
$zip_handler = $this->file_type_handlers['zip'];
// Returns an array of file paths.
$extracted = $zip_handler->extract( $file_path, $allowed_file_types );
if ( is_wp_error( $extracted ) ) {
return $extracted;
}
// If there are no extracted file names, no files passed the extraction validation.
if ( empty( $extracted['files'] ) ) {
// TODO: Decide what to do if no files passed the extraction validation
return new \WP_Error( 'file_error', self::INVALID_FILE_CONTENT );
}
$result['extraction_directory'] = $extracted['extraction_directory'];
foreach ( $extracted['files'] as $extracted_file_path ) {
// Each file is an array with a 'name' (file path) property.
if ( ! is_wp_error( $this->validate_file( [ 'tmp_name' => $extracted_file_path ] ) ) ) {
$result['files'][] = $extracted_file_path;
}
}
return $result;
}
/**
* Handle Elementor Upload
*
* This method receives a $file array. If the received file is a Base64 string, the $file array should include a
* 'fileData' property containing the string, which is decoded and has its contents stored in a temporary file.
* If the $file parameter passed is a standard $file array, the 'name' and 'tmp_name' properties are used for
* validation.
*
* The file goes through validation; if it passes validation, the file is returned. Otherwise, an error is returned.
*
* @since 3.3.0
* @access public
*
* @param array $data
* @param array $allowed_file_extensions Optional. an array of file types that are allowed to pass validation for each
* upload.
* @return array|\WP_Error
*/
public function handle_elementor_upload( array $data, $allowed_file_extensions = null ) {
// If $file['fileData'] is set, it signals that the passed file is a Base64 string that needs to be decoded and
// saved to a temporary file.
if ( isset( $data['fileData'] ) ) {
$data = $this->save_base64_to_tmp_file( $data, $allowed_file_extensions );
}
if ( is_wp_error( $data ) ) {
return $data;
}
$validation_result = $this->validate_file( $data, $allowed_file_extensions );
if ( is_wp_error( $validation_result ) ) {
return $validation_result;
}
return $data;
}
/**
* are Unfiltered Uploads Enabled
*
* @since 3.5.0
* @access public
*
* @return bool
*/
final public static function are_unfiltered_uploads_enabled() {
$enabled = ! ! get_option( self::UNFILTERED_FILE_UPLOADS_KEY )
&& Svg::file_sanitizer_can_run()
&& User::is_current_user_can_upload_json();
/**
* Allow Unfiltered Files Upload.
*
* Determines whether to enable unfiltered file uploads.
*
* @since 3.0.0
*
* @param bool $enabled Whether upload is enabled or not.
*/
$enabled = apply_filters( 'elementor/files/allow_unfiltered_upload', $enabled );
return $enabled;
}
/**
* Handle Elementor WP Media Upload
*
* Runs on the 'wp_handle_upload_prefilter' filter.
*
* @since 3.2.0
* @access public
*
* @param $file
* @return mixed
*/
public function handle_elementor_wp_media_upload( $file ) {
// If it isn't a file uploaded by Elementor, we do not intervene.
if ( ! $this->is_elementor_wp_media_upload() ) {
return $file;
}
$result = $this->validate_file( $file );
if ( is_wp_error( $result ) ) {
$file['error'] = $result->get_error_message();
}
return $file;
}
/**
* Get File Type Handler
*
* Initialize the proper file type handler according to the file extension
* and assign it to the file type handlers array.
*
* @since 3.3.0
* @access public
*
* @param string|null $file_extension - file extension
* @return File_Type_Base[]|File_Type_Base
*/
public function get_file_type_handlers( $file_extension = null ) {
return self::get_items( $this->file_type_handlers, $file_extension );
}
/**
* Check filetype and ext
*
* A workaround for upload validation which relies on a PHP extension (fileinfo)
* with inconsistent reporting behaviour.
* ref: https://core.trac.wordpress.org/ticket/39550
* ref: https://core.trac.wordpress.org/ticket/40175
*
* @since 3.5.0
* @access public
*
* @param $data
* @param $file
* @param $filename
* @param $mimes
*
* @return mixed
*/
public function check_filetype_and_ext( $data, $file, $filename, $mimes ) {
if ( ! empty( $data['ext'] ) && ! empty( $data['type'] ) ) {
return $data;
}
$wp_file_type = wp_check_filetype( $filename, $mimes );
$file_type_handlers = $this->get_file_type_handlers();
if ( isset( $file_type_handlers[ $wp_file_type['ext'] ] ) ) {
$file_type_handler = $file_type_handlers[ $wp_file_type['ext'] ];
$data['ext'] = $file_type_handler->get_file_extension();
$data['type'] = $file_type_handler->get_mime_type();
}
return $data;
}
/**
* Remove File Or Directory
*
* Directory is deleted recursively with all of its contents (subdirectories and files).
*
* @since 3.3.0
* @access public
*
* @param string $path
*/
public function remove_file_or_dir( $path ) {
if ( is_dir( $path ) ) {
$this->remove_directory_with_files( $path );
} elseif ( is_file( $path ) ) {
unlink( $path );
}
}
/**
* Create Temp File
*
* Create a random temporary file.
*
* @since 3.3.0
* @access public
*
* @param string $file_content
* @param string $file_name
* @return string|\WP_Error
*/
public function create_temp_file( $file_content, $file_name ) {
$file_name = str_replace( ' ', '', sanitize_file_name( $file_name ) );
if ( empty( $file_name ) ) {
return new \WP_Error( 'invalid_file_name', esc_html__( 'Invalid file name.', 'elementor' ) );
}
$temp_filename = $this->create_unique_dir() . $file_name;
/**
* Temp File Path
*
* Allows modifying the full path of the temporary file.
*
* @since 3.7.0
*
* @param string full path to file
*/
$temp_filename = apply_filters( 'elementor/files/temp-file-path', $temp_filename );
file_put_contents( $temp_filename, $file_content ); // phpcs:ignore
return $temp_filename;
}
/**
* Get Temp Directory
*
* Get the temporary files directory path. If the directory does not exist, this method creates it.
*
* @since 3.3.0
* @access public
*
* @return string $temp_dir
*/
public function get_temp_dir() {
if ( ! $this->temp_dir ) {
$wp_upload_dir = wp_upload_dir();
$temp_dir = implode( DIRECTORY_SEPARATOR, [ $wp_upload_dir['basedir'], 'elementor', 'tmp' ] ) . DIRECTORY_SEPARATOR;
/**
* Temp File Path
*
* Allows modifying the full path of the temporary file.
*
* @since 3.7.0
*
* @param string temporary directory
*/
$this->temp_dir = apply_filters( 'elementor/files/temp-dir', $temp_dir );
if ( ! is_dir( $this->temp_dir ) ) {
wp_mkdir_p( $this->temp_dir );
}
}
return $this->temp_dir;
}
/**
* Create Unique Temp Dir
*
* Create a unique temporary directory
*
* @since 3.3.0
* @access public
*
* @return string the new directory path
*/
public function create_unique_dir() {
$unique_dir_path = $this->get_temp_dir() . uniqid() . DIRECTORY_SEPARATOR;
wp_mkdir_p( $unique_dir_path );
return $unique_dir_path;
}
/**
* Register Ajax Actions
*
* Runs on the 'elementor/ajax/register_actions' hook. Receives the AJAX module as a parameter and registers
* callbacks for specified action IDs.
*
* @since 3.5.0
* @access public
*
* @param Ajax $ajax
*/
public function register_ajax_actions( Ajax $ajax ) {
$ajax->register_ajax_action( 'enable_unfiltered_files_upload', [ $this, 'enable_unfiltered_files_upload' ] );
}
/**
* Set Unfiltered Files Upload
*
* @since 3.5.0
* @access public
*/
public function enable_unfiltered_files_upload() {
if ( ! current_user_can( 'manage_options' ) ) {
return;
}
update_option( self::UNFILTERED_FILE_UPLOADS_KEY, 1 );
}
/**
* Support Unfiltered File Uploads
*
* When uploading a file within Elementor, this method adds the registered
* file types to WordPress' allowed mimes list. This will only happen if the user allowed unfiltered file uploads
* in Elementor's settings in the admin dashboard.
*
* @since 3.5.0
* @access public
*
* @param array $allowed_mimes
* @return array allowed mime types
*/
final public function support_unfiltered_elementor_file_uploads( $allowed_mimes ) {
if ( $this->is_elementor_upload() && $this->are_unfiltered_uploads_enabled() ) {
foreach ( $this->file_type_handlers as $file_type_handler ) {
$allowed_mimes[ $file_type_handler->get_file_extension() ] = $file_type_handler->get_mime_type();
}
}
return $allowed_mimes;
}
/**
* Set Elementor Upload State
*
* @since 3.5.0
* @access public
*
* @param $state
*/
public function set_elementor_upload_state( $state ) {
$this->is_elementor_upload = $state;
}
/**
* Is Elementor Upload
*
* This method checks if the current session includes a request to upload files made via Elementor.
*
* @since 3.5.0
* @access private
*
* @return bool
*/
private function is_elementor_upload() {
return $this->is_elementor_upload || $this->is_elementor_media_upload() || $this->is_elementor_wp_media_upload();
}
/**
* Is Elementor Media Upload
*
* Checks whether the current request includes uploading files via Elementor which are not destined for the Media
* Library.
*
* @since 3.5.0
* @access public
*
* @return bool
*/
public function is_elementor_media_upload() {
// Sometimes `uploadTypeCaller` passed as a GET parameter when using the WP Media Library REST API, where the
// whole request body is occupied by the uploaded file.
return isset( $_REQUEST['uploadTypeCaller'] ) && 'elementor-media-upload' === $_REQUEST['uploadTypeCaller']; // phpcs:ignore
}
/**
* Is Elementor WP Media Upload
*
* Checks whether the current request is a request to upload files into the WP Media Library via Elementor.
*
* @since 3.3.0
* @access private
*
* @return bool
*/
private function is_elementor_wp_media_upload() {
return isset( $_REQUEST['uploadTypeCaller'] ) && 'elementor-wp-media-upload' === $_REQUEST['uploadTypeCaller']; // phpcs:ignore
}
/**
* Add File Extension To Allowed Extensions List
*
* @since 3.3.0
* @access private
*
* @param string $file_type
*/
private function add_file_extension_to_allowed_extensions_list( $file_type ) {
$file_handler = $this->file_type_handlers[ $file_type ];
$file_extension = $file_handler->get_file_extension();
// Only add the file extension to the list if it doesn't already exist in it.
if ( ! in_array( $file_extension, $this->allowed_file_extensions, true ) ) {
$this->allowed_file_extensions[] = $file_extension;
}
}
/**
* Save Base64 as File
*
* Saves a Base64 string as a .tmp file in Elementor's temporary files directory.
*
* @since 3.3.0
* @access private
*
* @param $file
* @param array|null $allowed_file_extensions
*
* @return array|\WP_Error
*/
private function save_base64_to_tmp_file( $file, $allowed_file_extensions = null ) {
if ( empty( $file['fileName'] ) || empty( $file['fileData'] ) ) {
return new \WP_Error( 'file_error', self::INVALID_FILE_CONTENT );
}
$file_extension = pathinfo( $file['fileName'], PATHINFO_EXTENSION );
$is_file_type_allowed = $this->is_file_type_allowed( $file_extension, $allowed_file_extensions );
if ( is_wp_error( $is_file_type_allowed ) ) {
return $is_file_type_allowed;
}
$file_content = base64_decode( $file['fileData'] ); // phpcs:ignore
// If the decode fails
if ( ! $file_content ) {
return new \WP_Error( 'file_error', self::INVALID_FILE_CONTENT );
}
$temp_filename = $this->create_temp_file( $file_content, $file['fileName'] );
if ( is_wp_error( $temp_filename ) ) {
return $temp_filename;
}
return [
// the original uploaded file name
'name' => $file['fileName'],
// The path to the temporary file
'tmp_name' => $temp_filename,
];
}
/**
* Validate File
*
* @since 3.3.0
* @access private
*
* @param array $file
* @param array $file_extensions Optional
* @return bool|\WP_Error
*/
private function validate_file( array $file, $file_extensions = [] ) {
$uploaded_file_name = isset( $file['name'] ) ? $file['name'] : $file['tmp_name'];
$file_extension = pathinfo( $uploaded_file_name, PATHINFO_EXTENSION );
if ( ! $this->is_elementor_wp_media_upload() ) {
$is_file_type_allowed = $this->is_file_type_allowed( $file_extension, $file_extensions );
if ( is_wp_error( $is_file_type_allowed ) ) {
return $is_file_type_allowed;
}
}
$file_type_handler = $this->get_file_type_handlers( $file_extension );
// If Elementor does not have a handler for this file type, don't block it.
if ( ! $file_type_handler ) {
return true;
}
// If there is a File Type Handler for the uploaded file, it means it is a non-standard file type. In this case,
// we check if unfiltered file uploads are enabled or not before allowing it.
if ( ! self::are_unfiltered_uploads_enabled() ) {
$error = 'json' === $file_extension
? esc_html__( 'You do not have permission to upload JSON files.', 'elementor' )
: esc_html__( 'This file is not allowed for security reasons.', 'elementor' );
return new \WP_Error( Exceptions::FORBIDDEN, $error );
}
// Here is each file type handler's chance to run its own specific validations
return $file_type_handler->validate_file( $file );
}
/**
* Is File Type Allowed
*
* Checks whether the passed file extension is allowed for upload.
*
* @since 3.5.0
* @access private
*
* @param $file_extension
* @param $filtered_file_extensions
* @return bool|\WP_Error
*/
private function is_file_type_allowed( $file_extension, $filtered_file_extensions ) {
$allowed_file_extensions = $this->get_allowed_file_extensions();
if ( $filtered_file_extensions ) {
$allowed_file_extensions = array_intersect( $allowed_file_extensions, $filtered_file_extensions );
}
$is_allowed = false;
// Check if the file type (extension) is in the allowed extensions list. If it is a non-standard file type (not
// enabled by default in WordPress) and unfiltered file uploads are not enabled, it will not be in the allowed
// file extensions list.
foreach ( $allowed_file_extensions as $allowed_extension ) {
if ( preg_match( '/' . $allowed_extension . '/', $file_extension ) ) {
$is_allowed = true;
break;
}
}
if ( ! $is_allowed ) {
$is_allowed = new \WP_Error( Exceptions::FORBIDDEN, 'Uploading this file type is not allowed.' );
}
/**
* Elementor File Type Allowed
*
* Allows setting file types
*
* @since 3.5.0
*
* @param bool|\WP_Error $is_allowed
*/
return apply_filters( 'elementor/files/allow-file-type/' . $file_extension, $is_allowed );
}
/**
* Remove Directory with Files
*
* @since 3.3.0
* @access private
*
* @param string $dir
* @return bool
*/
private function remove_directory_with_files( $dir ) {
$dir_iterator = new \RecursiveDirectoryIterator( $dir, \RecursiveDirectoryIterator::SKIP_DOTS );
foreach ( new \RecursiveIteratorIterator( $dir_iterator, \RecursiveIteratorIterator::CHILD_FIRST ) as $name => $item ) {
if ( is_dir( $name ) ) {
rmdir( $name );
} elseif ( is_file( $name ) ) {
unlink( $name );
}
}
return rmdir( $dir );
}
/**
* Get Allowed File Extensions
*
* Retrieve an array containing the list of file extensions allowed for upload.
*
* @since 3.3.0
* @access private
*
* @return array file extension/s
*/
private function get_allowed_file_extensions() {
if ( ! $this->allowed_file_extensions ) {
$this->allowed_file_extensions = array_keys( get_allowed_mime_types() );
foreach ( $this->get_file_type_handlers() as $file_type => $handler ) {
if ( $handler->is_upload_allowed() ) {
// Add the file extension to the allowed extensions list only if unfiltered files upload is enabled.
$this->add_file_extension_to_allowed_extensions_list( $file_type );
}
}
}
return $this->allowed_file_extensions;
}
public function __construct() {
$this->register_file_types();
add_filter( 'upload_mimes', [ $this, 'support_unfiltered_elementor_file_uploads' ] );
add_filter( 'wp_handle_upload_prefilter', [ $this, 'handle_elementor_wp_media_upload' ] );
add_filter( 'wp_check_filetype_and_ext', [ $this, 'check_filetype_and_ext' ], 10, 4 );
// Ajax.
add_action( 'elementor/ajax/register_actions', [ $this, 'register_ajax_actions' ] );
}
}