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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.Application do
   6   use Application
   7
   8   import Cachex.Spec
   9
  10   alias Pleroma.Config
  11
  12   require Logger
  13
  14   @name Mix.Project.config()[:name]
  15   @version Mix.Project.config()[:version]
  16   @repository Mix.Project.config()[:source_url]
  17   @env Mix.env()
  18
  19   def name, do: @name
  20   def version, do: @version
  21   def named_version, do: @name <> " " <> @version
  22   def repository, do: @repository
  23
  24   def user_agent do
  25     if Process.whereis(Pleroma.Web.Endpoint) do
  26       case Config.get([:http, :user_agent], :default) do
  27         :default ->
  28           info = "#{Pleroma.Web.base_url()} <#{Config.get([:instance, :email], "")}>"
  29           named_version() <> "; " <> info
  30
  31         custom ->
  32           custom
  33       end
  34     else
  35       # fallback, if endpoint is not started yet
  36       "Pleroma Data Loader"
  37     end
  38   end
  39
  40   # See http://elixir-lang.org/docs/stable/elixir/Application.html
  41   # for more information on OTP Applications
  42   def start(_type, _args) do
  43     # Scrubbers are compiled at runtime and therefore will cause a conflict
  44     # every time the application is restarted, so we disable module
  45     # conflicts at runtime
  46     Code.compiler_options(ignore_module_conflict: true)
  47     # Disable warnings_as_errors at runtime, it breaks Phoenix live reload
  48     # due to protocol consolidation warnings
  49     Code.compiler_options(warnings_as_errors: false)
  50     Pleroma.Telemetry.Logger.attach()
  51     Config.Holder.save_default()
  52     Pleroma.HTML.compile_scrubbers()
  53     Pleroma.Config.Oban.warn()
  54     Config.DeprecationWarnings.warn()
  55     Pleroma.Plugs.HTTPSecurityPlug.warn_if_disabled()
  56     Pleroma.ApplicationRequirements.verify!()
  57     setup_instrumenters()
  58     load_custom_modules()
  59     Pleroma.Docs.JSON.compile()
  60
  61     adapter = Application.get_env(:tesla, :adapter)
  62
  63     if adapter == Tesla.Adapter.Gun do
  64       if version = Pleroma.OTPVersion.version() do
  65         [major, minor] =
  66           version
  67           |> String.split(".")
  68           |> Enum.map(&String.to_integer/1)
  69           |> Enum.take(2)
  70
  71         if (major == 22 and minor < 2) or major < 22 do
  72           raise "
  73             !!!OTP VERSION WARNING!!!
  74             You are using gun adapter with OTP version #{version}, which doesn't support correct handling of unordered certificates chains. Please update your Erlang/OTP to at least 22.2.
  75             "
  76         end
  77       else
  78         raise "
  79           !!!OTP VERSION WARNING!!!
  80           To support correct handling of unordered certificates chains - OTP version must be > 22.2.
  81           "
  82       end
  83     end
  84
  85     # Define workers and child supervisors to be supervised
  86     children =
  87       [
  88         Pleroma.Repo,
  89         Config.TransferTask,
  90         Pleroma.Emoji,
  91         Pleroma.Plugs.RateLimiter.Supervisor
  92       ] ++
  93         cachex_children() ++
  94         http_children(adapter, @env) ++
  95         [
  96           Pleroma.Stats,
  97           Pleroma.JobQueueMonitor,
  98           {Oban, Config.get(Oban)}
  99         ] ++
 100         task_children(@env) ++
 101         dont_run_in_test(@env) ++
 102         chat_child(@env, chat_enabled?()) ++
 103         [
 104           Pleroma.Web.Endpoint,
 105           Pleroma.Gopher.Server
 106         ]
 107
 108     # See http://elixir-lang.org/docs/stable/elixir/Supervisor.html
 109     # for other strategies and supported options
 110     opts = [strategy: :one_for_one, name: Pleroma.Supervisor]
 111     Supervisor.start_link(children, opts)
 112   end
 113
 114   def load_custom_modules do
 115     dir = Config.get([:modules, :runtime_dir])
 116
 117     if dir && File.exists?(dir) do
 118       dir
 119       |> Pleroma.Utils.compile_dir()
 120       |> case do
 121         {:error, _errors, _warnings} ->
 122           raise "Invalid custom modules"
 123
 124         {:ok, modules, _warnings} ->
 125           if @env != :test do
 126             Enum.each(modules, fn mod ->
 127               Logger.info("Custom module loaded: #{inspect(mod)}")
 128             end)
 129           end
 130
 131           :ok
 132       end
 133     end
 134   end
 135
 136   defp setup_instrumenters do
 137     require Prometheus.Registry
 138
 139     if Application.get_env(:prometheus, Pleroma.Repo.Instrumenter) do
 140       :ok =
 141         :telemetry.attach(
 142           "prometheus-ecto",
 143           [:pleroma, :repo, :query],
 144           &Pleroma.Repo.Instrumenter.handle_event/4,
 145           %{}
 146         )
 147
 148       Pleroma.Repo.Instrumenter.setup()
 149     end
 150
 151     Pleroma.Web.Endpoint.MetricsExporter.setup()
 152     Pleroma.Web.Endpoint.PipelineInstrumenter.setup()
 153     Pleroma.Web.Endpoint.Instrumenter.setup()
 154   end
 155
 156   defp cachex_children do
 157     [
 158       build_cachex("used_captcha", ttl_interval: seconds_valid_interval()),
 159       build_cachex("user", default_ttl: 25_000, ttl_interval: 1000, limit: 2500),
 160       build_cachex("object", default_ttl: 25_000, ttl_interval: 1000, limit: 2500),
 161       build_cachex("rich_media", default_ttl: :timer.minutes(120), limit: 5000),
 162       build_cachex("scrubber", limit: 2500),
 163       build_cachex("idempotency", expiration: idempotency_expiration(), limit: 2500),
 164       build_cachex("web_resp", limit: 2500),
 165       build_cachex("emoji_packs", expiration: emoji_packs_expiration(), limit: 10),
 166       build_cachex("failed_proxy_url", limit: 2500),
 167       build_cachex("banned_urls", default_ttl: :timer.hours(24 * 30), limit: 5_000)
 168     ]
 169   end
 170
 171   defp emoji_packs_expiration,
 172     do: expiration(default: :timer.seconds(5 * 60), interval: :timer.seconds(60))
 173
 174   defp idempotency_expiration,
 175     do: expiration(default: :timer.seconds(6 * 60 * 60), interval: :timer.seconds(60))
 176
 177   defp seconds_valid_interval,
 178     do: :timer.seconds(Config.get!([Pleroma.Captcha, :seconds_valid]))
 179
 180   @spec build_cachex(String.t(), keyword()) :: map()
 181   def build_cachex(type, opts),
 182     do: %{
 183       id: String.to_atom("cachex_" <> type),
 184       start: {Cachex, :start_link, [String.to_atom(type <> "_cache"), opts]},
 185       type: :worker
 186     }
 187
 188   defp chat_enabled?, do: Config.get([:chat, :enabled])
 189
 190   defp dont_run_in_test(env) when env in [:test, :benchmark], do: []
 191
 192   defp dont_run_in_test(_) do
 193     [
 194       {Registry,
 195        [
 196          name: Pleroma.Web.Streamer.registry(),
 197          keys: :duplicate,
 198          partitions: System.schedulers_online()
 199        ]},
 200       Pleroma.Web.FedSockets.Supervisor
 201     ]
 202   end
 203
 204   defp chat_child(_env, true) do
 205     [Pleroma.Web.ChatChannel.ChatChannelState]
 206   end
 207
 208   defp chat_child(_, _), do: []
 209
 210   defp task_children(:test) do
 211     [
 212       %{
 213         id: :web_push_init,
 214         start: {Task, :start_link, [&Pleroma.Web.Push.init/0]},
 215         restart: :temporary
 216       }
 217     ]
 218   end
 219
 220   defp task_children(_) do
 221     [
 222       %{
 223         id: :web_push_init,
 224         start: {Task, :start_link, [&Pleroma.Web.Push.init/0]},
 225         restart: :temporary
 226       },
 227       %{
 228         id: :internal_fetch_init,
 229         start: {Task, :start_link, [&Pleroma.Web.ActivityPub.InternalFetchActor.init/0]},
 230         restart: :temporary
 231       }
 232     ]
 233   end
 234
 235   # start hackney and gun pools in tests
 236   defp http_children(_, :test) do
 237     http_children(Tesla.Adapter.Hackney, nil) ++ http_children(Tesla.Adapter.Gun, nil)
 238   end
 239
 240   defp http_children(Tesla.Adapter.Hackney, _) do
 241     pools = [:federation, :media]
 242
 243     pools =
 244       if Config.get([Pleroma.Upload, :proxy_remote]) do
 245         [:upload | pools]
 246       else
 247         pools
 248       end
 249
 250     for pool <- pools do
 251       options = Config.get([:hackney_pools, pool])
 252       :hackney_pool.child_spec(pool, options)
 253     end
 254   end
 255
 256   defp http_children(Tesla.Adapter.Gun, _) do
 257     Pleroma.Gun.ConnectionPool.children() ++
 258       [{Task, &Pleroma.HTTP.AdapterHelper.Gun.limiter_setup/0}]
 259   end
 260
 261   defp http_children(_, _), do: []
 262 end