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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.EctoType.ActivityPub.ObjectValidators.Emoji do
   6   use Ecto.Type
   7
   8   def type, do: :map
   9
  10   def cast(data) when is_map(data) do
  11     has_invalid_emoji? =
  12       Enum.find(data, fn
  13         {name, uri} when is_binary(name) and is_binary(uri) ->
  14           # based on ObjectValidators.Uri.cast()
  15           case URI.parse(uri) do
  16             %URI{host: nil} -> true
  17             %URI{host: ""} -> true
  18             %URI{scheme: scheme} when scheme in ["https", "http"] -> false
  19             _ -> true
  20           end
  21
  22         {_name, _uri} ->
  23           true
  24       end)
  25
  26     if has_invalid_emoji?, do: :error, else: {:ok, data}
  27   end
  28
  29   def cast(_data), do: :error
  30
  31   def dump(data), do: {:ok, data}
  32
  33   def load(data), do: {:ok, data}
  34 end