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# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.AdminAPI.Config do
use Ecto.Schema
import Ecto.Changeset
import Pleroma.Web.Gettext
alias __MODULE__
alias Pleroma.Repo
@type t :: %__MODULE__{}
schema "config" do
field(:key, :string)
field(:group, :string)
field(:value, :binary)
timestamps()
end
@spec get_by_params(map()) :: Config.t() | nil
def get_by_params(params), do: Repo.get_by(Config, params)
@spec changeset(Config.t(), map()) :: Changeset.t()
def changeset(config, params \\ %{}) do
config
|> cast(params, [:key, :group, :value])
|> validate_required([:key, :group, :value])
|> unique_constraint(:key, name: :config_group_key_index)
end
@spec create(map()) :: {:ok, Config.t()} | {:error, Changeset.t()}
def create(params) do
%Config{}
|> changeset(Map.put(params, :value, transform(params[:value])))
|> Repo.insert()
end
@spec update(Config.t(), map()) :: {:ok, Config} | {:error, Changeset.t()}
def update(%Config{} = config, %{value: value}) do
config
|> change(value: transform(value))
|> Repo.update()
end
@spec update_or_create(map()) :: {:ok, Config.t()} | {:error, Changeset.t()}
def update_or_create(params) do
with %Config{} = config <- Config.get_by_params(Map.take(params, [:group, :key])) do
Config.update(config, params)
else
nil -> Config.create(params)
end
end
@spec delete(map()) :: {:ok, Config.t()} | {:error, Changeset.t()}
def delete(params) do
with %Config{} = config <- Config.get_by_params(Map.delete(params, :subkeys)) do
if params[:subkeys] do
updated_value =
Keyword.drop(
:erlang.binary_to_term(config.value),
Enum.map(params[:subkeys], &do_transform_string(&1))
)
Config.update(config, %{value: updated_value})
else
Repo.delete(config)
{:ok, nil}
end
else
nil ->
err =
dgettext("errors", "Config with params %{params} not found", params: inspect(params))
{:error, err}
end
end
@spec from_binary(binary()) :: term()
def from_binary(binary), do: :erlang.binary_to_term(binary)
@spec from_binary_with_convert(binary()) :: any()
def from_binary_with_convert(binary) do
from_binary(binary)
|> do_convert()
end
defp do_convert(entity) when is_list(entity) do
for v <- entity, into: [], do: do_convert(v)
end
defp do_convert(%Regex{} = entity), do: inspect(entity)
defp do_convert(entity) when is_map(entity) do
for {k, v} <- entity, into: %{}, do: {do_convert(k), do_convert(v)}
end
defp do_convert({:dispatch, [entity]}), do: %{"tuple" => [":dispatch", [inspect(entity)]]}
defp do_convert({:partial_chain, entity}), do: %{"tuple" => [":partial_chain", inspect(entity)]}
defp do_convert(entity) when is_tuple(entity),
do: %{"tuple" => do_convert(Tuple.to_list(entity))}
defp do_convert(entity) when is_boolean(entity) or is_number(entity) or is_nil(entity),
do: entity
defp do_convert(entity) when is_atom(entity) do
string = to_string(entity)
if String.starts_with?(string, "Elixir."),
do: do_convert(string),
else: ":" <> string
end
defp do_convert("Elixir." <> module_name), do: module_name
defp do_convert(entity) when is_binary(entity), do: entity
@spec transform(any()) :: binary()
def transform(entity) when is_binary(entity) or is_map(entity) or is_list(entity) do
:erlang.term_to_binary(do_transform(entity))
end
def transform(entity), do: :erlang.term_to_binary(entity)
defp do_transform(%Regex{} = entity), do: entity
defp do_transform(%{"tuple" => [":dispatch", [entity]]}) do
{dispatch_settings, []} = do_eval(entity)
{:dispatch, [dispatch_settings]}
end
defp do_transform(%{"tuple" => [":partial_chain", entity]}) do
{partial_chain, []} = do_eval(entity)
{:partial_chain, partial_chain}
end
defp do_transform(%{"tuple" => entity}) do
Enum.reduce(entity, {}, fn val, acc -> Tuple.append(acc, do_transform(val)) end)
end
defp do_transform(entity) when is_map(entity) do
for {k, v} <- entity, into: %{}, do: {do_transform(k), do_transform(v)}
end
defp do_transform(entity) when is_list(entity) do
for v <- entity, into: [], do: do_transform(v)
end
defp do_transform(entity) when is_binary(entity) do
String.trim(entity)
|> do_transform_string()
end
defp do_transform(entity), do: entity
defp do_transform_string("~r/" <> pattern) do
modificator = String.split(pattern, "/") |> List.last()
pattern = String.trim_trailing(pattern, "/" <> modificator)
case modificator do
"" -> ~r/#{pattern}/
"i" -> ~r/#{pattern}/i
"u" -> ~r/#{pattern}/u
"s" -> ~r/#{pattern}/s
end
end
defp do_transform_string(":" <> atom), do: String.to_atom(atom)
defp do_transform_string(value) do
if String.starts_with?(value, "Pleroma") or String.starts_with?(value, "Phoenix"),
do: String.to_existing_atom("Elixir." <> value),
else: value
end
defp do_eval(entity) do
cleaned_string = String.replace(entity, ~r/[^\w|^{:,[|^,|^[|^\]^}|^\/|^\.|^"]^\s/, "")
Code.eval_string(cleaned_string, [], requires: [], macros: [])
end
end
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