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393 lines
11 KiB
Elixir
393 lines
11 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.ConfigDB do
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use Ecto.Schema
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import Ecto.Changeset
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import Ecto.Query, only: [select: 3, from: 2]
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import Pleroma.Web.Gettext
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alias __MODULE__
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alias Pleroma.Repo
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@type t :: %__MODULE__{}
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@full_subkey_update [
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{:pleroma, :assets, :mascots},
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{:pleroma, :emoji, :groups},
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{:pleroma, :workers, :retries},
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{:pleroma, :mrf_subchain, :match_actor},
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{:pleroma, :mrf_keyword, :replace}
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]
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schema "config" do
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field(:key, Pleroma.EctoType.Config.Atom)
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field(:group, Pleroma.EctoType.Config.Atom)
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field(:value, Pleroma.EctoType.Config.BinaryValue)
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field(:db, {:array, :string}, virtual: true, default: [])
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timestamps()
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end
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@spec get_all_as_keyword() :: keyword()
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def get_all_as_keyword do
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ConfigDB
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|> select([c], {c.group, c.key, c.value})
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|> Repo.all()
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|> Enum.reduce([], fn {group, key, value}, acc ->
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Keyword.update(acc, group, [{key, value}], &Keyword.merge(&1, [{key, value}]))
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end)
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end
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@spec get_all_by_group(atom() | String.t()) :: [t()]
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def get_all_by_group(group) do
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from(c in ConfigDB, where: c.group == ^group) |> Repo.all()
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end
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@spec get_by_group_and_key(atom() | String.t(), atom() | String.t()) :: t() | nil
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def get_by_group_and_key(group, key) do
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get_by_params(%{group: group, key: key})
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end
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@spec get_by_params(map()) :: ConfigDB.t() | nil
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def get_by_params(%{group: _, key: _} = params), do: Repo.get_by(ConfigDB, params)
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@spec changeset(ConfigDB.t(), map()) :: Changeset.t()
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def changeset(config, params \\ %{}) do
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config
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|> cast(params, [:key, :group, :value])
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|> validate_required([:key, :group, :value])
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|> unique_constraint(:key, name: :config_group_key_index)
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end
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defp create(params) do
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%ConfigDB{}
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|> changeset(params)
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|> Repo.insert()
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end
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defp update(%ConfigDB{} = config, %{value: value}) do
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config
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|> changeset(%{value: value})
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|> Repo.update()
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end
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@spec get_db_keys(keyword(), any()) :: [String.t()]
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def get_db_keys(value, key) do
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keys =
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if Keyword.keyword?(value) do
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Keyword.keys(value)
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else
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[key]
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end
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Enum.map(keys, &to_json_types(&1))
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end
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@spec merge_group(atom(), atom(), keyword(), keyword()) :: keyword()
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def merge_group(group, key, old_value, new_value) do
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new_keys = to_mapset(new_value)
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intersect_keys = old_value |> to_mapset() |> MapSet.intersection(new_keys) |> MapSet.to_list()
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merged_value = ConfigDB.merge(old_value, new_value)
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@full_subkey_update
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|> Enum.map(fn
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{g, k, subkey} when g == group and k == key ->
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if subkey in intersect_keys, do: subkey, else: []
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_ ->
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[]
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end)
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|> List.flatten()
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|> Enum.reduce(merged_value, &Keyword.put(&2, &1, new_value[&1]))
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end
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defp to_mapset(keyword) do
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keyword
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|> Keyword.keys()
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|> MapSet.new()
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end
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@spec sub_key_full_update?(atom(), atom(), [Keyword.key()]) :: boolean()
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def sub_key_full_update?(group, key, subkeys) do
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Enum.any?(@full_subkey_update, fn {g, k, subkey} ->
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g == group and k == key and subkey in subkeys
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end)
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end
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@spec merge(keyword(), keyword()) :: keyword()
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def merge(config1, config2) when is_list(config1) and is_list(config2) do
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Keyword.merge(config1, config2, fn _, app1, app2 ->
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if Keyword.keyword?(app1) and Keyword.keyword?(app2) do
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Keyword.merge(app1, app2, &deep_merge/3)
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else
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app2
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end
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end)
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end
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defp deep_merge(_key, value1, value2) do
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if Keyword.keyword?(value1) and Keyword.keyword?(value2) do
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Keyword.merge(value1, value2, &deep_merge/3)
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else
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value2
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end
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end
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@spec update_or_create(map()) :: {:ok, ConfigDB.t()} | {:error, Changeset.t()}
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def update_or_create(params) do
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params = Map.put(params, :value, to_elixir_types(params[:value]))
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search_opts = Map.take(params, [:group, :key])
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with %ConfigDB{} = config <- ConfigDB.get_by_params(search_opts),
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{_, true, config} <- {:partial_update, can_be_partially_updated?(config), config},
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{_, true, config} <-
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{:can_be_merged, is_list(params[:value]) and is_list(config.value), config} do
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new_value = merge_group(config.group, config.key, config.value, params[:value])
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update(config, %{value: new_value})
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else
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{reason, false, config} when reason in [:partial_update, :can_be_merged] ->
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update(config, params)
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nil ->
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create(params)
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end
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end
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defp can_be_partially_updated?(%ConfigDB{} = config), do: not only_full_update?(config)
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defp only_full_update?(%ConfigDB{group: group, key: key}) do
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full_key_update = [
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{:pleroma, :ecto_repos},
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{:quack, :meta},
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{:mime, :types},
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{:cors_plug, [:max_age, :methods, :expose, :headers]},
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{:swarm, :node_blacklist},
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{:logger, :backends}
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]
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Enum.any?(full_key_update, fn
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{s_group, s_key} ->
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group == s_group and ((is_list(s_key) and key in s_key) or key == s_key)
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end)
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end
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@spec delete(ConfigDB.t() | map()) :: {:ok, ConfigDB.t()} | {:error, Changeset.t()}
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def delete(%ConfigDB{} = config), do: Repo.delete(config)
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def delete(params) do
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search_opts = Map.delete(params, :subkeys)
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with %ConfigDB{} = config <- ConfigDB.get_by_params(search_opts),
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{config, sub_keys} when is_list(sub_keys) <- {config, params[:subkeys]},
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keys <- Enum.map(sub_keys, &string_to_elixir_types(&1)),
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{_, config, new_value} when new_value != [] <-
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{:partial_remove, config, Keyword.drop(config.value, keys)} do
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update(config, %{value: new_value})
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else
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{:partial_remove, config, []} ->
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Repo.delete(config)
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{config, nil} ->
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Repo.delete(config)
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nil ->
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err =
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dgettext("errors", "Config with params %{params} not found", params: inspect(params))
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{:error, err}
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end
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end
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@spec to_json_types(term()) :: map() | list() | boolean() | String.t()
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def to_json_types(entity) when is_list(entity) do
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Enum.map(entity, &to_json_types/1)
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end
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def to_json_types(%Regex{} = entity), do: inspect(entity)
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def to_json_types(entity) when is_map(entity) do
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Map.new(entity, fn {k, v} -> {to_json_types(k), to_json_types(v)} end)
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end
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def to_json_types({:args, args}) when is_list(args) do
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arguments =
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Enum.map(args, fn
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arg when is_tuple(arg) -> inspect(arg)
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arg -> to_json_types(arg)
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end)
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%{"tuple" => [":args", arguments]}
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end
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def to_json_types({:proxy_url, {type, :localhost, port}}) do
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%{"tuple" => [":proxy_url", %{"tuple" => [to_json_types(type), "localhost", port]}]}
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end
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def to_json_types({:proxy_url, {type, host, port}}) when is_tuple(host) do
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ip =
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host
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|> :inet_parse.ntoa()
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|> to_string()
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%{
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"tuple" => [
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":proxy_url",
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%{"tuple" => [to_json_types(type), ip, port]}
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]
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}
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end
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def to_json_types({:proxy_url, {type, host, port}}) do
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%{
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"tuple" => [
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":proxy_url",
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%{"tuple" => [to_json_types(type), to_string(host), port]}
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]
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}
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end
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def to_json_types({:partial_chain, entity}),
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do: %{"tuple" => [":partial_chain", inspect(entity)]}
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def to_json_types(entity) when is_tuple(entity) do
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value =
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entity
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|> Tuple.to_list()
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|> to_json_types()
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%{"tuple" => value}
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end
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def to_json_types(entity) when is_binary(entity), do: entity
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def to_json_types(entity) when is_boolean(entity) or is_number(entity) or is_nil(entity) do
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entity
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end
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def to_json_types(entity) when entity in [:"tlsv1.1", :"tlsv1.2", :"tlsv1.3"] do
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":#{entity}"
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end
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def to_json_types(entity) when is_atom(entity), do: inspect(entity)
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@spec to_elixir_types(boolean() | String.t() | map() | list()) :: term()
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def to_elixir_types(%{"tuple" => [":args", args]}) when is_list(args) do
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arguments =
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Enum.map(args, fn arg ->
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if String.contains?(arg, ["{", "}"]) do
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{elem, []} = Code.eval_string(arg)
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elem
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else
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to_elixir_types(arg)
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end
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end)
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{:args, arguments}
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end
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def to_elixir_types(%{"tuple" => [":proxy_url", %{"tuple" => [type, host, port]}]}) do
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{:proxy_url, {string_to_elixir_types(type), parse_host(host), port}}
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end
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def to_elixir_types(%{"tuple" => [":partial_chain", entity]}) do
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{partial_chain, []} =
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entity
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|> String.replace(~r/[^\w|^{:,[|^,|^[|^\]^}|^\/|^\.|^"]^\s/, "")
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|> Code.eval_string()
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{:partial_chain, partial_chain}
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end
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def to_elixir_types(%{"tuple" => entity}) do
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Enum.reduce(entity, {}, &Tuple.append(&2, to_elixir_types(&1)))
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end
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def to_elixir_types(entity) when is_map(entity) do
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Map.new(entity, fn {k, v} -> {to_elixir_types(k), to_elixir_types(v)} end)
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end
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def to_elixir_types(entity) when is_list(entity) do
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Enum.map(entity, &to_elixir_types/1)
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end
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def to_elixir_types(entity) when is_binary(entity) do
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entity
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|> String.trim()
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|> string_to_elixir_types()
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end
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def to_elixir_types(entity), do: entity
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@spec string_to_elixir_types(String.t()) ::
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atom() | Regex.t() | module() | String.t() | no_return()
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def string_to_elixir_types("~r" <> _pattern = regex) do
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pattern =
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~r/^~r(?'delimiter'[\/|"'([{<]{1})(?'pattern'.+)[\/|"')\]}>]{1}(?'modifier'[uismxfU]*)/u
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delimiters = ["/", "|", "\"", "'", {"(", ")"}, {"[", "]"}, {"{", "}"}, {"<", ">"}]
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with %{"modifier" => modifier, "pattern" => pattern, "delimiter" => regex_delimiter} <-
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Regex.named_captures(pattern, regex),
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{:ok, {leading, closing}} <- find_valid_delimiter(delimiters, pattern, regex_delimiter),
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{result, _} <- Code.eval_string("~r#{leading}#{pattern}#{closing}#{modifier}") do
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result
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end
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end
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def string_to_elixir_types(":" <> atom), do: String.to_atom(atom)
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def string_to_elixir_types(value) do
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if module_name?(value) do
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String.to_existing_atom("Elixir." <> value)
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else
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value
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end
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end
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defp parse_host("localhost"), do: :localhost
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defp parse_host(host) do
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charlist = to_charlist(host)
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case :inet.parse_address(charlist) do
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{:error, :einval} ->
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charlist
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{:ok, ip} ->
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ip
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end
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end
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defp find_valid_delimiter([], _string, _) do
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raise(ArgumentError, message: "valid delimiter for Regex expression not found")
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end
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defp find_valid_delimiter([{leading, closing} = delimiter | others], pattern, regex_delimiter)
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when is_tuple(delimiter) do
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if String.contains?(pattern, closing) do
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find_valid_delimiter(others, pattern, regex_delimiter)
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else
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{:ok, {leading, closing}}
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end
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end
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defp find_valid_delimiter([delimiter | others], pattern, regex_delimiter) do
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if String.contains?(pattern, delimiter) do
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find_valid_delimiter(others, pattern, regex_delimiter)
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else
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{:ok, {delimiter, delimiter}}
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end
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end
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@spec module_name?(String.t()) :: boolean()
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def module_name?(string) do
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Regex.match?(~r/^(Pleroma|Phoenix|Tesla|Quack|Ueberauth|Swoosh)\./, string) or
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string in ["Oban", "Ueberauth", "ExSyslogger", "ConcurrentLimiter"]
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end
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end
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