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config.ex
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# Pleroma: A lightweight social networking server
# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Mix.Tasks.Pleroma.Config do
use Mix.Task
import Ecto.Query
import Mix.Pleroma
alias Pleroma.ConfigDB
alias Pleroma.Repo
@shortdoc "Manages the location of the config"
@moduledoc File.read!("docs/administration/CLI_tasks/config.md")
def run(["migrate_to_db"]) do
check_configdb(fn ->
start_pleroma()
migrate_to_db()
end)
end
def run(["migrate_from_db" | options]) do
check_configdb(fn ->
start_pleroma()
{opts, _} =
OptionParser.parse!(options,
strict: [env: :string, delete: :boolean, path: :string],
aliases: [d: :delete]
)
migrate_from_db(opts)
end)
end
def run(["dump"]) do
check_configdb(fn ->
start_pleroma()
header = config_header()
settings =
ConfigDB
|> Repo.all()
|> Enum.sort()
unless settings == [] do
shell_info("#{header}")
Enum.each(settings, &dump(&1))
else
shell_error("No settings in ConfigDB.")
end
end)
end
def run(["dump", group, key]) do
check_configdb(fn ->
start_pleroma()
group = maybe_atomize(group)
key = maybe_atomize(key)
group
|> ConfigDB.get_by_group_and_key(key)
|> dump()
end)
end
def run(["dump", group]) do
check_configdb(fn ->
start_pleroma()
group = maybe_atomize(group)
dump_group(group)
end)
end
def run(["groups"]) do
check_configdb(fn ->
start_pleroma()
groups =
ConfigDB
|> distinct([c], true)
|> select([c], c.group)
|> Repo.all()
if length(groups) > 0 do
shell_info("The following configuration groups are set in ConfigDB:\r\n")
groups |> Enum.each(fn x -> shell_info("- #{x}") end)
shell_info("\r\n")
end
end)
end
def run(["reset", "--force"]) do
check_configdb(fn ->
start_pleroma()
truncatedb()
shell_info("The ConfigDB settings have been removed from the database.")
end)
end
def run(["reset"]) do
check_configdb(fn ->
start_pleroma()
shell_info("The following settings will be permanently removed:")
ConfigDB
|> Repo.all()
|> Enum.sort()
|> Enum.each(&dump(&1))
shell_error("\nTHIS CANNOT BE UNDONE!")
if shell_prompt("Are you sure you want to continue?", "n") in ~w(Yn Y y) do
truncatedb()
shell_info("The ConfigDB settings have been removed from the database.")
else
shell_error("No changes made.")
end
end)
end
def run(["delete", "--force", group, key]) do
start_pleroma()
group = maybe_atomize(group)
key = maybe_atomize(key)
with true <- key_exists?(group, key) do
shell_info("The following settings will be removed from ConfigDB:\n")
group
|> ConfigDB.get_by_group_and_key(key)
|> dump()
delete_key(group, key)
else
_ ->
shell_error("No settings in ConfigDB for #{inspect(group)}, #{inspect(key)}. Aborting.")
end
end
def run(["delete", "--force", group]) do
start_pleroma()
group = maybe_atomize(group)
with true <- group_exists?(group) do
shell_info("The following settings will be removed from ConfigDB:\n")
dump_group(group)
delete_group(group)
else
_ -> shell_error("No settings in ConfigDB for #{inspect(group)}. Aborting.")
end
end
def run(["delete", group, key]) do
start_pleroma()
group = maybe_atomize(group)
key = maybe_atomize(key)
with true <- key_exists?(group, key) do
shell_info("The following settings will be removed from ConfigDB:\n")
group
|> ConfigDB.get_by_group_and_key(key)
|> dump()
if shell_prompt("Are you sure you want to continue?", "n") in ~w(Yn Y y) do
delete_key(group, key)
else
shell_error("No changes made.")
end
else
_ ->
shell_error("No settings in ConfigDB for #{inspect(group)}, #{inspect(key)}. Aborting.")
end
end
def run(["delete", group]) do
start_pleroma()
group = maybe_atomize(group)
with true <- group_exists?(group) do
shell_info("The following settings will be removed from ConfigDB:\n")
dump_group(group)
if shell_prompt("Are you sure you want to continue?", "n") in ~w(Yn Y y) do
delete_group(group)
else
shell_error("No changes made.")
end
else
_ -> shell_error("No settings in ConfigDB for #{inspect(group)}. Aborting.")
end
end
# Removes any policies that are not a real module
# as they will prevent the server from starting
def run(["fix_mrf_policies"]) do
check_configdb(fn ->
start_pleroma()
group = :pleroma
key = :mrf
%{value: value} =
group
|> ConfigDB.get_by_group_and_key(key)
policies =
Keyword.get(value, :policies, [])
|> Enum.filter(&is_atom(&1))
|> Enum.filter(fn mrf ->
case Code.ensure_compiled(mrf) do
{:module, _} -> true
{:error, _} -> false
end
end)
value = Keyword.put(value, :policies, policies)
ConfigDB.update_or_create(%{group: group, key: key, value: value})
end)
end
@spec migrate_to_db(Path.t() | nil) :: any()
def migrate_to_db(file_path \\ nil) do
with :ok <- Pleroma.Config.DeprecationWarnings.warn() do
config_file =
if file_path do
file_path
else
if Pleroma.Config.get(:release) do
Pleroma.Config.get(:config_path)
else
"config/#{Pleroma.Config.get(:env)}.secret.exs"
end
end
do_migrate_to_db(config_file)
else
_ ->
shell_error("Migration is not allowed until all deprecation warnings have been resolved.")
end
end
defp do_migrate_to_db(config_file) do
if File.exists?(config_file) do
shell_info("Migrating settings from file: #{Path.expand(config_file)}")
truncatedb()
custom_config =
config_file
|> read_file()
|> elem(0)
custom_config
|> Keyword.keys()
|> Enum.each(&create(&1, custom_config))
else
shell_info("To migrate settings, you must define custom settings in #{config_file}.")
end
end
defp create(group, settings) do
group
|> Pleroma.Config.Loader.filter_group(settings)
|> Enum.each(fn {key, value} ->
{:ok, _} = ConfigDB.update_or_create(%{group: group, key: key, value: value})
shell_info("Settings for key #{key} migrated.")
end)
shell_info("Settings for group #{inspect(group)} migrated.")
end
defp migrate_from_db(opts) do
env = opts[:env] || Pleroma.Config.get(:env)
filename = "#{env}.exported_from_db.secret.exs"
config_path =
cond do
opts[:path] ->
opts[:path]
Pleroma.Config.get(:release) ->
:config_path
|> Pleroma.Config.get()
|> Path.dirname()
true ->
"config"
end
|> Path.join(filename)
with {:ok, file} <- File.open(config_path, [:write, :utf8]) do
write_config(file, config_path, opts)
shell_info("Database configuration settings have been exported to #{config_path}")
else
_ ->
shell_error("Impossible to save settings to this directory #{Path.dirname(config_path)}")
tmp_config_path = Path.join(System.tmp_dir!(), filename)
file = File.open!(tmp_config_path)
shell_info(
"Saving database configuration settings to #{tmp_config_path}. Copy it to the #{Path.dirname(config_path)} manually."
)
write_config(file, tmp_config_path, opts)
end
end
defp write_config(file, path, opts) do
IO.write(file, config_header())
ConfigDB
|> Repo.all()
|> Enum.each(&write_and_delete(&1, file, opts[:delete]))
:ok = File.close(file)
System.cmd("mix", ["format", path])
end
defp config_header, do: "import Config\r\n\r\n"
defp read_file(config_file), do: Config.Reader.read_imports!(config_file)
defp write_and_delete(config, file, delete?) do
config
|> write(file)
|> delete(delete?)
end
defp write(config, file) do
value = inspect(config.value, limit: :infinity)
IO.write(file, "config #{inspect(config.group)}, #{inspect(config.key)}, #{value}\r\n\r\n")
config
end
defp delete(config, true) do
{:ok, _} = Repo.delete(config)
shell_info(
"config #{inspect(config.group)}, #{inspect(config.key)} was deleted from the ConfigDB."
)
end
defp delete(_config, _), do: :ok
defp dump(%ConfigDB{} = config) do
value = inspect(config.value, limit: :infinity)
shell_info("config #{inspect(config.group)}, #{inspect(config.key)}, #{value}\r\n\r\n")
end
defp dump(_), do: :noop
defp dump_group(group) when is_atom(group) do
group
|> ConfigDB.get_all_by_group()
|> Enum.each(&dump/1)
end
defp group_exists?(group) do
group
|> ConfigDB.get_all_by_group()
|> Enum.any?()
end
defp key_exists?(group, key) do
group
|> ConfigDB.get_by_group_and_key(key)
|> is_nil
|> Kernel.!()
end
defp maybe_atomize(arg) when is_atom(arg), do: arg
defp maybe_atomize(":" <> arg), do: maybe_atomize(arg)
defp maybe_atomize(arg) when is_binary(arg) do
if ConfigDB.module_name?(arg) do
String.to_existing_atom("Elixir." <> arg)
else
String.to_atom(arg)
end
end
defp check_configdb(callback) do
with true <- Pleroma.Config.get([:configurable_from_database]) do
callback.()
else
_ ->
shell_error(
"ConfigDB not enabled. Please check the value of :configurable_from_database in your configuration."
)
end
end
defp delete_key(group, key) do
check_configdb(fn ->
ConfigDB.delete(%{group: group, key: key})
end)
end
defp delete_group(group) do
check_configdb(fn ->
group
|> ConfigDB.get_all_by_group()
|> Enum.each(&ConfigDB.delete/1)
end)
end
defp truncatedb do
Ecto.Adapters.SQL.query!(Repo, "TRUNCATE config;")
Ecto.Adapters.SQL.query!(Repo, "ALTER SEQUENCE config_id_seq RESTART;")
end
end

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