kumo.file_type.from_media_type

local ft_list = kumo.file_type.from_media_type(EXT)

Since: Version 2025.12.02-67ee9e96

The functionality described in this section requires version 2025.12.02-67ee9e96 of KumoMTA, or a more recent version.

Returns the list of file types that have the specified MIME media type.

This function will return an array style table holding one entry for each file type that has the specified media type.

Each element of the array is a FileTypeResult.

local kumo = require 'kumo'
local utils = require 'policy-extras.policy_utils'

local png = kumo.file_type.from_media_type 'image/png'
-- Note that we're just looking at the first element of
-- the returned array here; there are a number of entries
-- returned for this media type
utils.assert_eq(png[1], {
  name = 'Portable Network Graphics',
  media_types = { 'image/png' },
  extensions = { 'png' },
})