automator_email_attachment_allowed_file_extensions

Description

Usage

add_filter( 'automator_email_attachment_allowed_file_extensions', 'your_function_name', 10, 1 );

Return Value

The filtered value.

Examples

/**
 * Add support for uploading .webp image files as email attachments.
 *
 * By default, the plugin might not allow certain image formats. This filter
 * hooks into the allowed file extensions and adds '.webp' to the list.
 *
 * @param array $allowed_extensions An array of allowed file extensions.
 * @return array The modified array of allowed file extensions.
 */
function my_automator_add_webp_attachment_extension( $allowed_extensions ) {
    // Ensure $allowed_extensions is an array before using in_array
    if ( ! is_array( $allowed_extensions ) ) {
        $allowed_extensions = array();
    }

    // Add .webp if it's not already in the list
    if ( ! in_array( '.webp', $allowed_extensions, true ) ) {
        $allowed_extensions[] = '.webp';
    }

    return $allowed_extensions;
}
add_filter( 'automator_email_attachment_allowed_file_extensions', 'my_automator_add_webp_attachment_extension', 10, 1 );

Placement

This code should be placed in the functions.php file of your active theme, a custom plugin, or using a code snippets plugin.

Source Code

src/core/services/email/attachment/class-upload-directory-sanitizer.php:92
src/core/services/email/attachment/handler.php:143
src/core/services/email/attachment/handler.php:245

private function delete_unsafe_files( $dir ) {

		$files     = glob( trailingslashit( $dir ) . '*' ) ?: array();
		$allowed   = apply_filters( 'automator_email_attachment_allowed_file_extensions', automator_get_allowed_attachment_ext() );
		$protected = array( '.htaccess', 'index.php' );

		foreach ( $files as $file ) {

			if ( ! is_file( $file ) ) {
				continue;
			}

			if ( in_array( basename( $file ), $protected, true ) ) {
				continue;
			}

			$extension = strtolower( pathinfo( $file, PATHINFO_EXTENSION ) );

			if ( empty( $extension ) || ! in_array( $extension, $allowed, true ) ) {
				wp_delete_file( $file );
				automator_log( sprintf( 'Deleted unsafe file: %s', basename( $file ) ), 'Upload_Directory_Sanitizer' );
			}
		}
	}