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is_uploaded_file( $tmp_name ) ) { continue; } $filename = $name; $filename = wpcf7_canonicalize( $filename, array( 'strto' => 'as-is' ) ); $filename = wpcf7_antiscript_file_name( $filename ); $filename = apply_filters( 'wpcf7_upload_file_name', $filename, $name, $options ); $filename = wp_unique_filename( $uploads_dir, $filename ); $new_file = path_join( $uploads_dir, $filename ); // phpcs:ignore Generic.PHP.ForbiddenFunctions.Found if ( false === @move_uploaded_file( $tmp_name, $new_file ) ) { return new WP_Error( 'wpcf7_upload_failed', wpcf7_get_message( 'upload_failed' ) ); } // Make sure the uploaded file is only readable for the owner process. $filesystem->chmod( $new_file, 0400 ); $uploaded_files[] = $new_file; } return $uploaded_files; } add_filter( 'wpcf7_messages', 'wpcf7_file_messages', 10, 1 ); /** * A wpcf7_messages filter callback that adds messages for * file-uploading fields. */ function wpcf7_file_messages( $messages ) { return array_merge( $messages, array( 'upload_failed' => array( 'description' => __( 'Uploading a file fails for any reason', 'contact-form-7' ), 'default' => __( 'There was an unknown error uploading the file.', 'contact-form-7' ), ), 'upload_file_type_invalid' => array( 'description' => __( 'Uploaded file is not allowed for file type', 'contact-form-7' ), 'default' => __( 'You are not allowed to upload files of this type.', 'contact-form-7' ), ), 'upload_file_too_large' => array( 'description' => __( 'Uploaded file is too large', 'contact-form-7' ), 'default' => __( 'The uploaded file is too large.', 'contact-form-7' ), ), 'upload_failed_php_error' => array( 'description' => __( 'Uploading a file fails for PHP error', 'contact-form-7' ), 'default' => __( 'There was an error uploading the file.', 'contact-form-7' ), ), ) ); } add_filter( 'wpcf7_form_enctype', 'wpcf7_file_form_enctype_filter', 10, 1 ); /** * A wpcf7_form_enctype filter callback that sets the enctype attribute * to multipart/form-data if the form has file-uploading fields. */ function wpcf7_file_form_enctype_filter( $enctype ) { $multipart = (bool) wpcf7_scan_form_tags( array( 'feature' => 'file-uploading', ) ); if ( $multipart ) { $enctype = 'multipart/form-data'; } return $enctype; } /** * Converts a MIME type string to an array of corresponding file extensions. * * @param string $mime MIME type. * Wildcard (*) is available for the subtype part. * @return array Corresponding file extensions. */ function wpcf7_convert_mime_to_ext( $mime ) { static $mime_types = array(); $mime_types = wp_get_mime_types(); $results = array(); if ( preg_match( '%^([a-z]+)/([*]|[a-z0-9.+-]+)$%i', $mime, $matches ) ) { foreach ( $mime_types as $key => $val ) { if ( '*' === $matches[2] and str_starts_with( $val, $matches[1] . '/' ) or $val === $matches[0] ) { $results = array_merge( $results, explode( '|', $key ) ); } } } $results = array_unique( $results ); $results = array_filter( $results ); $results = array_values( $results ); return $results; } /** * Returns a formatted list of acceptable filetypes. * * @param string|array $types Optional. Array of filetypes. * @param string $format Optional. Pre-defined format designator. * @return string Formatted list of acceptable filetypes. */ function wpcf7_acceptable_filetypes( $types = 'default', $format = 'regex' ) { if ( 'default' === $types or empty( $types ) ) { $types = array( 'audio/*', 'video/*', 'image/*', ); } else { $types = array_map( static function ( $type ) { if ( is_string( $type ) ) { return preg_split( '/[\s|,]+/', strtolower( $type ) ); } }, (array) $types ); $types = wpcf7_array_flatten( $types ); $types = array_filter( array_unique( $types ) ); } if ( 'attr' === $format or 'attribute' === $format ) { $types = array_map( static function ( $type ) { if ( false === strpos( $type, '/' ) ) { return sprintf( '.%s', trim( $type, '.' ) ); } elseif ( preg_match( '%^([a-z]+)/[*]$%i', $type, $matches ) ) { if ( in_array( $matches[1], array( 'audio', 'video', 'image' ), true ) ) { return $type; } else { return ''; } } elseif ( wpcf7_convert_mime_to_ext( $type ) ) { return $type; } }, $types ); $types = array_filter( $types ); return implode( ',', $types ); } elseif ( 'regex' === $format ) { $types = array_map( static function ( $type ) { if ( false === strpos( $type, '/' ) ) { return preg_quote( trim( $type, '.' ) ); } elseif ( $type = wpcf7_convert_mime_to_ext( $type ) ) { return $type; } }, $types ); $types = wpcf7_array_flatten( $types ); $types = array_filter( array_unique( $types ) ); return implode( '|', $types ); } return ''; } add_action( 'wpcf7_init', 'wpcf7_init_uploads', 10, 0 ); /** * Initializes the temporary directory for uploaded files. */ function wpcf7_init_uploads() { $dir = wpcf7_upload_tmp_dir(); if ( ! is_dir( $dir ) or ! wp_is_writable( $dir ) ) { return; } $htaccess_file = path_join( $dir, '.htaccess' ); if ( file_exists( $htaccess_file ) ) { list( $first_line_comment ) = (array) file( $htaccess_file, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES ); if ( '# Apache 2.4+' === $first_line_comment ) { return; } } $filesystem = WPCF7_Filesystem::get_instance(); $htaccess_body = ' # Apache 2.4+ Require all denied # Apache 2.2 Deny from all '; $filesystem->put_contents( $htaccess_file, ltrim( $htaccess_body ) ); } /** * Creates a child directory with a randomly generated name. * * @param string $dir The parent directory path. * @return string The child directory path if created, otherwise the parent. */ function wpcf7_maybe_add_random_dir( $dir ) { do { $dir_new = path_join( $dir, zeroise( wp_rand(), 10 ) ); } while ( file_exists( $dir_new ) ); if ( wp_mkdir_p( $dir_new ) ) { return $dir_new; } return $dir; } /** * Returns the directory path for uploaded files. * * @return string Directory path. */ function wpcf7_upload_tmp_dir() { static $output = ''; if ( $output ) { return $output; } if ( defined( 'WPCF7_UPLOADS_TMP_DIR' ) ) { $dir = path_join( WP_CONTENT_DIR, WPCF7_UPLOADS_TMP_DIR ); wp_mkdir_p( $dir ); if ( wpcf7_is_file_path_in_content_dir( $dir ) ) { return $output = $dir; } } $dir = path_join( wpcf7_upload_dir( 'dir' ), 'wpcf7_uploads' ); wp_mkdir_p( $dir ); return $output = $dir; } add_action( 'shutdown', 'wpcf7_cleanup_upload_files', 20, 0 ); /** * Cleans up files in the temporary directory for uploaded files. * * @param int $seconds Files older than this are removed. Default 60. * @param int $max Maximum number of files to be removed in a function call. * Default 100. */ function wpcf7_cleanup_upload_files( $seconds = 60, $max = 100 ) { $dir = trailingslashit( wpcf7_upload_tmp_dir() ); if ( ! is_dir( $dir ) or ! is_readable( $dir ) or ! wp_is_writable( $dir ) ) { return; } $seconds = absint( $seconds ); $max = absint( $max ); $count = 0; if ( $handle = opendir( $dir ) ) { while ( false !== ( $file = readdir( $handle ) ) ) { if ( '.' === $file or '..' === $file or '.htaccess' === $file ) { continue; } $mtime = @filemtime( path_join( $dir, $file ) ); if ( $mtime and time() < $mtime + $seconds ) { // less than $seconds old continue; } wpcf7_rmdir_p( path_join( $dir, $file ) ); $count += 1; if ( $max <= $count ) { break; } } closedir( $handle ); } } add_action( 'wpcf7_admin_warnings', 'wpcf7_file_display_warning_message', 10, 3 ); /** * Displays warning messages about file-uploading fields. */ function wpcf7_file_display_warning_message( $page, $action, $object ) { if ( $object instanceof WPCF7_ContactForm ) { $contact_form = $object; } else { return; } $has_tags = (bool) $contact_form->scan_form_tags( array( 'feature' => 'file-uploading', ) ); if ( ! $has_tags ) { return; } $uploads_dir = wpcf7_upload_tmp_dir(); if ( ! is_dir( $uploads_dir ) or ! wp_is_writable( $uploads_dir ) ) { wp_admin_notice( sprintf( /* translators: %s: the path of the temporary folder */ __( 'This contact form has file uploading fields, but the temporary folder for the files (%s) does not exist or is not writable. You can create the folder or change its permission manually.', 'contact-form-7' ), $uploads_dir ), array( 'type' => 'warning' ) ); } }