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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.User do
   6   use Ecto.Schema
   7
   8   import Ecto.Changeset
   9   import Ecto.Query
  10   import Ecto, only: [assoc: 2]
  11
  12   alias Ecto.Multi
  13   alias Pleroma.Activity
  14   alias Pleroma.Config
  15   alias Pleroma.Conversation.Participation
  16   alias Pleroma.Delivery
  17   alias Pleroma.EctoType.ActivityPub.ObjectValidators
  18   alias Pleroma.Emoji
  19   alias Pleroma.FollowingRelationship
  20   alias Pleroma.Formatter
  21   alias Pleroma.HTML
  22   alias Pleroma.Keys
  23   alias Pleroma.MFA
  24   alias Pleroma.Notification
  25   alias Pleroma.Object
  26   alias Pleroma.Registration
  27   alias Pleroma.Repo
  28   alias Pleroma.User
  29   alias Pleroma.UserRelationship
  30   alias Pleroma.Web
  31   alias Pleroma.Web.ActivityPub.ActivityPub
  32   alias Pleroma.Web.ActivityPub.Builder
  33   alias Pleroma.Web.ActivityPub.Pipeline
  34   alias Pleroma.Web.ActivityPub.Utils
  35   alias Pleroma.Web.CommonAPI
  36   alias Pleroma.Web.CommonAPI.Utils, as: CommonUtils
  37   alias Pleroma.Web.OAuth
  38   alias Pleroma.Web.RelMe
  39   alias Pleroma.Workers.BackgroundWorker
  40
  41   require Logger
  42
  43   @type t :: %__MODULE__{}
  44   @type account_status ::
  45           :active
  46           | :deactivated
  47           | :password_reset_pending
  48           | :confirmation_pending
  49           | :approval_pending
  50   @primary_key {:id, FlakeId.Ecto.CompatType, autogenerate: true}
  51
  52   # credo:disable-for-next-line Credo.Check.Readability.MaxLineLength
  53   @email_regex ~r/^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/
  54
  55   @strict_local_nickname_regex ~r/^[a-zA-Z\d]+$/
  56   @extended_local_nickname_regex ~r/^[a-zA-Z\d_-]+$/
  57
  58   # AP ID user relationships (blocks, mutes etc.)
  59   # Format: [rel_type: [outgoing_rel: :outgoing_rel_target, incoming_rel: :incoming_rel_source]]
  60   @user_relationships_config [
  61     block: [
  62       blocker_blocks: :blocked_users,
  63       blockee_blocks: :blocker_users
  64     ],
  65     mute: [
  66       muter_mutes: :muted_users,
  67       mutee_mutes: :muter_users
  68     ],
  69     reblog_mute: [
  70       reblog_muter_mutes: :reblog_muted_users,
  71       reblog_mutee_mutes: :reblog_muter_users
  72     ],
  73     notification_mute: [
  74       notification_muter_mutes: :notification_muted_users,
  75       notification_mutee_mutes: :notification_muter_users
  76     ],
  77     # Note: `inverse_subscription` relationship is inverse: subscriber acts as relationship target
  78     inverse_subscription: [
  79       subscribee_subscriptions: :subscriber_users,
  80       subscriber_subscriptions: :subscribee_users
  81     ]
  82   ]
  83
  84   @cachex Pleroma.Config.get([:cachex, :provider], Cachex)
  85
  86   schema "users" do
  87     field(:bio, :string, default: "")
  88     field(:raw_bio, :string)
  89     field(:email, :string)
  90     field(:name, :string)
  91     field(:nickname, :string)
  92     field(:password_hash, :string)
  93     field(:password, :string, virtual: true)
  94     field(:password_confirmation, :string, virtual: true)
  95     field(:keys, :string)
  96     field(:public_key, :string)
  97     field(:ap_id, :string)
  98     field(:avatar, :map, default: %{})
  99     field(:local, :boolean, default: true)
 100     field(:follower_address, :string)
 101     field(:following_address, :string)
 102     field(:search_rank, :float, virtual: true)
 103     field(:search_type, :integer, virtual: true)
 104     field(:tags, {:array, :string}, default: [])
 105     field(:last_refreshed_at, :naive_datetime_usec)
 106     field(:last_digest_emailed_at, :naive_datetime)
 107     field(:banner, :map, default: %{})
 108     field(:background, :map, default: %{})
 109     field(:note_count, :integer, default: 0)
 110     field(:follower_count, :integer, default: 0)
 111     field(:following_count, :integer, default: 0)
 112     field(:is_locked, :boolean, default: false)
 113     field(:is_confirmed, :boolean, default: true)
 114     field(:password_reset_pending, :boolean, default: false)
 115     field(:is_approved, :boolean, default: true)
 116     field(:registration_reason, :string, default: nil)
 117     field(:confirmation_token, :string, default: nil)
 118     field(:default_scope, :string, default: "public")
 119     field(:domain_blocks, {:array, :string}, default: [])
 120     field(:is_active, :boolean, default: true)
 121     field(:no_rich_text, :boolean, default: false)
 122     field(:ap_enabled, :boolean, default: false)
 123     field(:is_moderator, :boolean, default: false)
 124     field(:is_admin, :boolean, default: false)
 125     field(:show_role, :boolean, default: true)
 126     field(:mastofe_settings, :map, default: nil)
 127     field(:uri, ObjectValidators.Uri, default: nil)
 128     field(:hide_followers_count, :boolean, default: false)
 129     field(:hide_follows_count, :boolean, default: false)
 130     field(:hide_followers, :boolean, default: false)
 131     field(:hide_follows, :boolean, default: false)
 132     field(:hide_favorites, :boolean, default: true)
 133     field(:pinned_activities, {:array, :string}, default: [])
 134     field(:email_notifications, :map, default: %{"digest" => false})
 135     field(:mascot, :map, default: nil)
 136     field(:emoji, :map, default: %{})
 137     field(:pleroma_settings_store, :map, default: %{})
 138     field(:fields, {:array, :map}, default: [])
 139     field(:raw_fields, {:array, :map}, default: [])
 140     field(:is_discoverable, :boolean, default: false)
 141     field(:invisible, :boolean, default: false)
 142     field(:allow_following_move, :boolean, default: true)
 143     field(:skip_thread_containment, :boolean, default: false)
 144     field(:actor_type, :string, default: "Person")
 145     field(:also_known_as, {:array, ObjectValidators.ObjectID}, default: [])
 146     field(:inbox, :string)
 147     field(:shared_inbox, :string)
 148     field(:accepts_chat_messages, :boolean, default: nil)
 149     field(:last_active_at, :naive_datetime)
 150
 151     embeds_one(
 152       :notification_settings,
 153       Pleroma.User.NotificationSetting,
 154       on_replace: :update
 155     )
 156
 157     has_many(:notifications, Notification)
 158     has_many(:registrations, Registration)
 159     has_many(:deliveries, Delivery)
 160
 161     has_many(:outgoing_relationships, UserRelationship, foreign_key: :source_id)
 162     has_many(:incoming_relationships, UserRelationship, foreign_key: :target_id)
 163
 164     for {relationship_type,
 165          [
 166            {outgoing_relation, outgoing_relation_target},
 167            {incoming_relation, incoming_relation_source}
 168          ]} <- @user_relationships_config do
 169       # Definitions of `has_many` relations: :blocker_blocks, :muter_mutes, :reblog_muter_mutes,
 170       #   :notification_muter_mutes, :subscribee_subscriptions
 171       has_many(outgoing_relation, UserRelationship,
 172         foreign_key: :source_id,
 173         where: [relationship_type: relationship_type]
 174       )
 175
 176       # Definitions of `has_many` relations: :blockee_blocks, :mutee_mutes, :reblog_mutee_mutes,
 177       #   :notification_mutee_mutes, :subscriber_subscriptions
 178       has_many(incoming_relation, UserRelationship,
 179         foreign_key: :target_id,
 180         where: [relationship_type: relationship_type]
 181       )
 182
 183       # Definitions of `has_many` relations: :blocked_users, :muted_users, :reblog_muted_users,
 184       #   :notification_muted_users, :subscriber_users
 185       has_many(outgoing_relation_target, through: [outgoing_relation, :target])
 186
 187       # Definitions of `has_many` relations: :blocker_users, :muter_users, :reblog_muter_users,
 188       #   :notification_muter_users, :subscribee_users
 189       has_many(incoming_relation_source, through: [incoming_relation, :source])
 190     end
 191
 192     # `:blocks` is deprecated (replaced with `blocked_users` relation)
 193     field(:blocks, {:array, :string}, default: [])
 194     # `:mutes` is deprecated (replaced with `muted_users` relation)
 195     field(:mutes, {:array, :string}, default: [])
 196     # `:muted_reblogs` is deprecated (replaced with `reblog_muted_users` relation)
 197     field(:muted_reblogs, {:array, :string}, default: [])
 198     # `:muted_notifications` is deprecated (replaced with `notification_muted_users` relation)
 199     field(:muted_notifications, {:array, :string}, default: [])
 200     # `:subscribers` is deprecated (replaced with `subscriber_users` relation)
 201     field(:subscribers, {:array, :string}, default: [])
 202
 203     embeds_one(
 204       :multi_factor_authentication_settings,
 205       MFA.Settings,
 206       on_replace: :delete
 207     )
 208
 209     timestamps()
 210   end
 211
 212   for {_relationship_type, [{_outgoing_relation, outgoing_relation_target}, _]} <-
 213         @user_relationships_config do
 214     # `def blocked_users_relation/2`, `def muted_users_relation/2`,
 215     #   `def reblog_muted_users_relation/2`, `def notification_muted_users/2`,
 216     #   `def subscriber_users/2`
 217     def unquote(:"#{outgoing_relation_target}_relation")(user, restrict_deactivated? \\ false) do
 218       target_users_query = assoc(user, unquote(outgoing_relation_target))
 219
 220       if restrict_deactivated? do
 221         target_users_query
 222         |> User.Query.build(%{deactivated: false})
 223       else
 224         target_users_query
 225       end
 226     end
 227
 228     # `def blocked_users/2`, `def muted_users/2`, `def reblog_muted_users/2`,
 229     #   `def notification_muted_users/2`, `def subscriber_users/2`
 230     def unquote(outgoing_relation_target)(user, restrict_deactivated? \\ false) do
 231       __MODULE__
 232       |> apply(unquote(:"#{outgoing_relation_target}_relation"), [
 233         user,
 234         restrict_deactivated?
 235       ])
 236       |> Repo.all()
 237     end
 238
 239     # `def blocked_users_ap_ids/2`, `def muted_users_ap_ids/2`, `def reblog_muted_users_ap_ids/2`,
 240     #   `def notification_muted_users_ap_ids/2`, `def subscriber_users_ap_ids/2`
 241     def unquote(:"#{outgoing_relation_target}_ap_ids")(user, restrict_deactivated? \\ false) do
 242       __MODULE__
 243       |> apply(unquote(:"#{outgoing_relation_target}_relation"), [
 244         user,
 245         restrict_deactivated?
 246       ])
 247       |> select([u], u.ap_id)
 248       |> Repo.all()
 249     end
 250   end
 251
 252   def cached_blocked_users_ap_ids(user) do
 253     @cachex.fetch!(:user_cache, "blocked_users_ap_ids:#{user.ap_id}", fn _ ->
 254       blocked_users_ap_ids(user)
 255     end)
 256   end
 257
 258   def cached_muted_users_ap_ids(user) do
 259     @cachex.fetch!(:user_cache, "muted_users_ap_ids:#{user.ap_id}", fn _ ->
 260       muted_users_ap_ids(user)
 261     end)
 262   end
 263
 264   defdelegate following_count(user), to: FollowingRelationship
 265   defdelegate following(user), to: FollowingRelationship
 266   defdelegate following?(follower, followed), to: FollowingRelationship
 267   defdelegate following_ap_ids(user), to: FollowingRelationship
 268   defdelegate get_follow_requests(user), to: FollowingRelationship
 269   defdelegate search(query, opts \\ []), to: User.Search
 270
 271   @doc """
 272   Dumps Flake Id to SQL-compatible format (16-byte UUID).
 273   E.g. "9pQtDGXuq4p3VlcJEm" -> <<0, 0, 1, 110, 179, 218, 42, 92, 213, 41, 44, 227, 95, 213, 0, 0>>
 274   """
 275   def binary_id(source_id) when is_binary(source_id) do
 276     with {:ok, dumped_id} <- FlakeId.Ecto.CompatType.dump(source_id) do
 277       dumped_id
 278     else
 279       _ -> source_id
 280     end
 281   end
 282
 283   def binary_id(source_ids) when is_list(source_ids) do
 284     Enum.map(source_ids, &binary_id/1)
 285   end
 286
 287   def binary_id(%User{} = user), do: binary_id(user.id)
 288
 289   @doc "Returns status account"
 290   @spec account_status(User.t()) :: account_status()
 291   def account_status(%User{is_active: false}), do: :deactivated
 292   def account_status(%User{password_reset_pending: true}), do: :password_reset_pending
 293   def account_status(%User{local: true, is_approved: false}), do: :approval_pending
 294   def account_status(%User{local: true, is_confirmed: false}), do: :confirmation_pending
 295   def account_status(%User{}), do: :active
 296
 297   @spec visible_for(User.t(), User.t() | nil) ::
 298           :visible
 299           | :invisible
 300           | :restricted_unauthenticated
 301           | :deactivated
 302           | :confirmation_pending
 303   def visible_for(user, for_user \\ nil)
 304
 305   def visible_for(%User{invisible: true}, _), do: :invisible
 306
 307   def visible_for(%User{id: user_id}, %User{id: user_id}), do: :visible
 308
 309   def visible_for(%User{} = user, nil) do
 310     if restrict_unauthenticated?(user) do
 311       :restrict_unauthenticated
 312     else
 313       visible_account_status(user)
 314     end
 315   end
 316
 317   def visible_for(%User{} = user, for_user) do
 318     if superuser?(for_user) do
 319       :visible
 320     else
 321       visible_account_status(user)
 322     end
 323   end
 324
 325   def visible_for(_, _), do: :invisible
 326
 327   defp restrict_unauthenticated?(%User{local: true}) do
 328     Config.restrict_unauthenticated_access?(:profiles, :local)
 329   end
 330
 331   defp restrict_unauthenticated?(%User{local: _}) do
 332     Config.restrict_unauthenticated_access?(:profiles, :remote)
 333   end
 334
 335   defp visible_account_status(user) do
 336     status = account_status(user)
 337
 338     if status in [:active, :password_reset_pending] do
 339       :visible
 340     else
 341       status
 342     end
 343   end
 344
 345   @spec superuser?(User.t()) :: boolean()
 346   def superuser?(%User{local: true, is_admin: true}), do: true
 347   def superuser?(%User{local: true, is_moderator: true}), do: true
 348   def superuser?(_), do: false
 349
 350   @spec invisible?(User.t()) :: boolean()
 351   def invisible?(%User{invisible: true}), do: true
 352   def invisible?(_), do: false
 353
 354   def avatar_url(user, options \\ []) do
 355     case user.avatar do
 356       %{"url" => [%{"href" => href} | _]} ->
 357         href
 358
 359       _ ->
 360         unless options[:no_default] do
 361           Config.get([:assets, :default_user_avatar], "#{Web.base_url()}/images/avi.png")
 362         end
 363     end
 364   end
 365
 366   def banner_url(user, options \\ []) do
 367     case user.banner do
 368       %{"url" => [%{"href" => href} | _]} -> href
 369       _ -> !options[:no_default] && "#{Web.base_url()}/images/banner.png"
 370     end
 371   end
 372
 373   # Should probably be renamed or removed
 374   def ap_id(%User{nickname: nickname}), do: "#{Web.base_url()}/users/#{nickname}"
 375
 376   def ap_followers(%User{follower_address: fa}) when is_binary(fa), do: fa
 377   def ap_followers(%User{} = user), do: "#{ap_id(user)}/followers"
 378
 379   @spec ap_following(User.t()) :: String.t()
 380   def ap_following(%User{following_address: fa}) when is_binary(fa), do: fa
 381   def ap_following(%User{} = user), do: "#{ap_id(user)}/following"
 382
 383   defp truncate_fields_param(params) do
 384     if Map.has_key?(params, :fields) do
 385       Map.put(params, :fields, Enum.map(params[:fields], &truncate_field/1))
 386     else
 387       params
 388     end
 389   end
 390
 391   defp truncate_if_exists(params, key, max_length) do
 392     if Map.has_key?(params, key) and is_binary(params[key]) do
 393       {value, _chopped} = String.split_at(params[key], max_length)
 394       Map.put(params, key, value)
 395     else
 396       params
 397     end
 398   end
 399
 400   defp fix_follower_address(%{follower_address: _, following_address: _} = params), do: params
 401
 402   defp fix_follower_address(%{nickname: nickname} = params),
 403     do: Map.put(params, :follower_address, ap_followers(%User{nickname: nickname}))
 404
 405   defp fix_follower_address(params), do: params
 406
 407   def remote_user_changeset(struct \\ %User{local: false}, params) do
 408     bio_limit = Config.get([:instance, :user_bio_length], 5000)
 409     name_limit = Config.get([:instance, :user_name_length], 100)
 410
 411     name =
 412       case params[:name] do
 413         name when is_binary(name) and byte_size(name) > 0 -> name
 414         _ -> params[:nickname]
 415       end
 416
 417     params =
 418       params
 419       |> Map.put(:name, name)
 420       |> Map.put_new(:last_refreshed_at, NaiveDateTime.utc_now())
 421       |> truncate_if_exists(:name, name_limit)
 422       |> truncate_if_exists(:bio, bio_limit)
 423       |> truncate_fields_param()
 424       |> fix_follower_address()
 425
 426     struct
 427     |> cast(
 428       params,
 429       [
 430         :bio,
 431         :emoji,
 432         :ap_id,
 433         :inbox,
 434         :shared_inbox,
 435         :nickname,
 436         :public_key,
 437         :avatar,
 438         :ap_enabled,
 439         :banner,
 440         :is_locked,
 441         :last_refreshed_at,
 442         :uri,
 443         :follower_address,
 444         :following_address,
 445         :hide_followers,
 446         :hide_follows,
 447         :hide_followers_count,
 448         :hide_follows_count,
 449         :follower_count,
 450         :fields,
 451         :following_count,
 452         :is_discoverable,
 453         :invisible,
 454         :actor_type,
 455         :also_known_as,
 456         :accepts_chat_messages
 457       ]
 458     )
 459     |> cast(params, [:name], empty_values: [])
 460     |> validate_required([:ap_id])
 461     |> validate_required([:name], trim: false)
 462     |> unique_constraint(:nickname)
 463     |> validate_format(:nickname, @email_regex)
 464     |> validate_length(:bio, max: bio_limit)
 465     |> validate_length(:name, max: name_limit)
 466     |> validate_fields(true)
 467     |> validate_non_local()
 468   end
 469
 470   defp validate_non_local(cng) do
 471     local? = get_field(cng, :local)
 472
 473     if local? do
 474       cng
 475       |> add_error(:local, "User is local, can't update with this changeset.")
 476     else
 477       cng
 478     end
 479   end
 480
 481   def update_changeset(struct, params \\ %{}) do
 482     bio_limit = Config.get([:instance, :user_bio_length], 5000)
 483     name_limit = Config.get([:instance, :user_name_length], 100)
 484
 485     struct
 486     |> cast(
 487       params,
 488       [
 489         :bio,
 490         :raw_bio,
 491         :name,
 492         :emoji,
 493         :avatar,
 494         :public_key,
 495         :inbox,
 496         :shared_inbox,
 497         :is_locked,
 498         :no_rich_text,
 499         :default_scope,
 500         :banner,
 501         :hide_follows,
 502         :hide_followers,
 503         :hide_followers_count,
 504         :hide_follows_count,
 505         :hide_favorites,
 506         :allow_following_move,
 507         :also_known_as,
 508         :background,
 509         :show_role,
 510         :skip_thread_containment,
 511         :fields,
 512         :raw_fields,
 513         :pleroma_settings_store,
 514         :is_discoverable,
 515         :actor_type,
 516         :accepts_chat_messages
 517       ]
 518     )
 519     |> unique_constraint(:nickname)
 520     |> validate_format(:nickname, local_nickname_regex())
 521     |> validate_length(:bio, max: bio_limit)
 522     |> validate_length(:name, min: 1, max: name_limit)
 523     |> validate_inclusion(:actor_type, ["Person", "Service"])
 524     |> put_fields()
 525     |> put_emoji()
 526     |> put_change_if_present(:bio, &{:ok, parse_bio(&1, struct)})
 527     |> put_change_if_present(:avatar, &put_upload(&1, :avatar))
 528     |> put_change_if_present(:banner, &put_upload(&1, :banner))
 529     |> put_change_if_present(:background, &put_upload(&1, :background))
 530     |> put_change_if_present(
 531       :pleroma_settings_store,
 532       &{:ok, Map.merge(struct.pleroma_settings_store, &1)}
 533     )
 534     |> validate_fields(false)
 535   end
 536
 537   defp put_fields(changeset) do
 538     if raw_fields = get_change(changeset, :raw_fields) do
 539       raw_fields =
 540         raw_fields
 541         |> Enum.filter(fn %{"name" => n} -> n != "" end)
 542
 543       fields =
 544         raw_fields
 545         |> Enum.map(fn f -> Map.update!(f, "value", &parse_fields(&1)) end)
 546
 547       changeset
 548       |> put_change(:raw_fields, raw_fields)
 549       |> put_change(:fields, fields)
 550     else
 551       changeset
 552     end
 553   end
 554
 555   defp parse_fields(value) do
 556     value
 557     |> Formatter.linkify(mentions_format: :full)
 558     |> elem(0)
 559   end
 560
 561   defp put_emoji(changeset) do
 562     emojified_fields = [:bio, :name, :raw_fields]
 563
 564     if Enum.any?(changeset.changes, fn {k, _} -> k in emojified_fields end) do
 565       bio = Emoji.Formatter.get_emoji_map(get_field(changeset, :bio))
 566       name = Emoji.Formatter.get_emoji_map(get_field(changeset, :name))
 567
 568       emoji = Map.merge(bio, name)
 569
 570       emoji =
 571         changeset
 572         |> get_field(:raw_fields)
 573         |> Enum.reduce(emoji, fn x, acc ->
 574           Map.merge(acc, Emoji.Formatter.get_emoji_map(x["name"] <> x["value"]))
 575         end)
 576
 577       put_change(changeset, :emoji, emoji)
 578     else
 579       changeset
 580     end
 581   end
 582
 583   defp put_change_if_present(changeset, map_field, value_function) do
 584     with {:ok, value} <- fetch_change(changeset, map_field),
 585          {:ok, new_value} <- value_function.(value) do
 586       put_change(changeset, map_field, new_value)
 587     else
 588       _ -> changeset
 589     end
 590   end
 591
 592   defp put_upload(value, type) do
 593     with %Plug.Upload{} <- value,
 594          {:ok, object} <- ActivityPub.upload(value, type: type) do
 595       {:ok, object.data}
 596     end
 597   end
 598
 599   def update_as_admin_changeset(struct, params) do
 600     struct
 601     |> update_changeset(params)
 602     |> cast(params, [:email])
 603     |> delete_change(:also_known_as)
 604     |> unique_constraint(:email)
 605     |> validate_format(:email, @email_regex)
 606     |> validate_inclusion(:actor_type, ["Person", "Service"])
 607   end
 608
 609   @spec update_as_admin(User.t(), map()) :: {:ok, User.t()} | {:error, Changeset.t()}
 610   def update_as_admin(user, params) do
 611     params = Map.put(params, "password_confirmation", params["password"])
 612     changeset = update_as_admin_changeset(user, params)
 613
 614     if params["password"] do
 615       reset_password(user, changeset, params)
 616     else
 617       User.update_and_set_cache(changeset)
 618     end
 619   end
 620
 621   def password_update_changeset(struct, params) do
 622     struct
 623     |> cast(params, [:password, :password_confirmation])
 624     |> validate_required([:password, :password_confirmation])
 625     |> validate_confirmation(:password)
 626     |> put_password_hash()
 627     |> put_change(:password_reset_pending, false)
 628   end
 629
 630   @spec reset_password(User.t(), map()) :: {:ok, User.t()} | {:error, Changeset.t()}
 631   def reset_password(%User{} = user, params) do
 632     reset_password(user, user, params)
 633   end
 634
 635   def reset_password(%User{id: user_id} = user, struct, params) do
 636     multi =
 637       Multi.new()
 638       |> Multi.update(:user, password_update_changeset(struct, params))
 639       |> Multi.delete_all(:tokens, OAuth.Token.Query.get_by_user(user_id))
 640       |> Multi.delete_all(:auth, OAuth.Authorization.delete_by_user_query(user))
 641
 642     case Repo.transaction(multi) do
 643       {:ok, %{user: user} = _} -> set_cache(user)
 644       {:error, _, changeset, _} -> {:error, changeset}
 645     end
 646   end
 647
 648   def update_password_reset_pending(user, value) do
 649     user
 650     |> change()
 651     |> put_change(:password_reset_pending, value)
 652     |> update_and_set_cache()
 653   end
 654
 655   def force_password_reset_async(user) do
 656     BackgroundWorker.enqueue("force_password_reset", %{"user_id" => user.id})
 657   end
 658
 659   @spec force_password_reset(User.t()) :: {:ok, User.t()} | {:error, Ecto.Changeset.t()}
 660   def force_password_reset(user), do: update_password_reset_pending(user, true)
 661
 662   # Used to auto-register LDAP accounts which won't have a password hash stored locally
 663   def register_changeset_ldap(struct, params = %{password: password})
 664       when is_nil(password) do
 665     params = Map.put_new(params, :accepts_chat_messages, true)
 666
 667     params =
 668       if Map.has_key?(params, :email) do
 669         Map.put_new(params, :email, params[:email])
 670       else
 671         params
 672       end
 673
 674     struct
 675     |> cast(params, [
 676       :name,
 677       :nickname,
 678       :email,
 679       :accepts_chat_messages
 680     ])
 681     |> validate_required([:name, :nickname])
 682     |> unique_constraint(:nickname)
 683     |> validate_exclusion(:nickname, Config.get([User, :restricted_nicknames]))
 684     |> validate_format(:nickname, local_nickname_regex())
 685     |> put_ap_id()
 686     |> unique_constraint(:ap_id)
 687     |> put_following_and_follower_address()
 688   end
 689
 690   def register_changeset(struct, params \\ %{}, opts \\ []) do
 691     bio_limit = Config.get([:instance, :user_bio_length], 5000)
 692     name_limit = Config.get([:instance, :user_name_length], 100)
 693     reason_limit = Config.get([:instance, :registration_reason_length], 500)
 694     params = Map.put_new(params, :accepts_chat_messages, true)
 695
 696     confirmed? =
 697       if is_nil(opts[:confirmed]) do
 698         !Config.get([:instance, :account_activation_required])
 699       else
 700         opts[:confirmed]
 701       end
 702
 703     approved? =
 704       if is_nil(opts[:approved]) do
 705         !Config.get([:instance, :account_approval_required])
 706       else
 707         opts[:approved]
 708       end
 709
 710     struct
 711     |> confirmation_changeset(set_confirmation: confirmed?)
 712     |> approval_changeset(set_approval: approved?)
 713     |> cast(params, [
 714       :bio,
 715       :raw_bio,
 716       :email,
 717       :name,
 718       :nickname,
 719       :password,
 720       :password_confirmation,
 721       :emoji,
 722       :accepts_chat_messages,
 723       :registration_reason
 724     ])
 725     |> validate_required([:name, :nickname, :password, :password_confirmation])
 726     |> validate_confirmation(:password)
 727     |> unique_constraint(:email)
 728     |> validate_format(:email, @email_regex)
 729     |> validate_change(:email, fn :email, email ->
 730       valid? =
 731         Config.get([User, :email_blacklist])
 732         |> Enum.all?(fn blacklisted_domain ->
 733           !String.ends_with?(email, ["@" <> blacklisted_domain, "." <> blacklisted_domain])
 734         end)
 735
 736       if valid?, do: [], else: [email: "Invalid email"]
 737     end)
 738     |> unique_constraint(:nickname)
 739     |> validate_exclusion(:nickname, Config.get([User, :restricted_nicknames]))
 740     |> validate_format(:nickname, local_nickname_regex())
 741     |> validate_length(:bio, max: bio_limit)
 742     |> validate_length(:name, min: 1, max: name_limit)
 743     |> validate_length(:registration_reason, max: reason_limit)
 744     |> maybe_validate_required_email(opts[:external])
 745     |> put_password_hash
 746     |> put_ap_id()
 747     |> unique_constraint(:ap_id)
 748     |> put_following_and_follower_address()
 749   end
 750
 751   def maybe_validate_required_email(changeset, true), do: changeset
 752
 753   def maybe_validate_required_email(changeset, _) do
 754     if Config.get([:instance, :account_activation_required]) do
 755       validate_required(changeset, [:email])
 756     else
 757       changeset
 758     end
 759   end
 760
 761   defp put_ap_id(changeset) do
 762     ap_id = ap_id(%User{nickname: get_field(changeset, :nickname)})
 763     put_change(changeset, :ap_id, ap_id)
 764   end
 765
 766   defp put_following_and_follower_address(changeset) do
 767     followers = ap_followers(%User{nickname: get_field(changeset, :nickname)})
 768
 769     changeset
 770     |> put_change(:follower_address, followers)
 771   end
 772
 773   defp autofollow_users(user) do
 774     candidates = Config.get([:instance, :autofollowed_nicknames])
 775
 776     autofollowed_users =
 777       User.Query.build(%{nickname: candidates, local: true, is_active: true})
 778       |> Repo.all()
 779
 780     follow_all(user, autofollowed_users)
 781   end
 782
 783   defp autofollowing_users(user) do
 784     candidates = Config.get([:instance, :autofollowing_nicknames])
 785
 786     User.Query.build(%{nickname: candidates, local: true, deactivated: false})
 787     |> Repo.all()
 788     |> Enum.each(&follow(&1, user, :follow_accept))
 789
 790     {:ok, :success}
 791   end
 792
 793   @doc "Inserts provided changeset, performs post-registration actions (confirmation email sending etc.)"
 794   def register(%Ecto.Changeset{} = changeset) do
 795     with {:ok, user} <- Repo.insert(changeset) do
 796       post_register_action(user)
 797     end
 798   end
 799
 800   def post_register_action(%User{is_confirmed: false} = user) do
 801     with {:ok, _} <- try_send_confirmation_email(user) do
 802       {:ok, user}
 803     end
 804   end
 805
 806   def post_register_action(%User{is_approved: false} = user) do
 807     with {:ok, _} <- send_user_approval_email(user),
 808          {:ok, _} <- send_admin_approval_emails(user) do
 809       {:ok, user}
 810     end
 811   end
 812
 813   def post_register_action(%User{is_approved: true, is_confirmed: true} = user) do
 814     with {:ok, user} <- autofollow_users(user),
 815          {:ok, _} <- autofollowing_users(user),
 816          {:ok, user} <- set_cache(user),
 817          {:ok, _} <- send_welcome_email(user),
 818          {:ok, _} <- send_welcome_message(user),
 819          {:ok, _} <- send_welcome_chat_message(user) do
 820       {:ok, user}
 821     end
 822   end
 823
 824   defp send_user_approval_email(user) do
 825     user
 826     |> Pleroma.Emails.UserEmail.approval_pending_email()
 827     |> Pleroma.Emails.Mailer.deliver_async()
 828
 829     {:ok, :enqueued}
 830   end
 831
 832   defp send_admin_approval_emails(user) do
 833     all_superusers()
 834     |> Enum.filter(fn user -> not is_nil(user.email) end)
 835     |> Enum.each(fn superuser ->
 836       superuser
 837       |> Pleroma.Emails.AdminEmail.new_unapproved_registration(user)
 838       |> Pleroma.Emails.Mailer.deliver_async()
 839     end)
 840
 841     {:ok, :enqueued}
 842   end
 843
 844   def send_welcome_message(user) do
 845     if User.WelcomeMessage.enabled?() do
 846       User.WelcomeMessage.post_message(user)
 847       {:ok, :enqueued}
 848     else
 849       {:ok, :noop}
 850     end
 851   end
 852
 853   def send_welcome_chat_message(user) do
 854     if User.WelcomeChatMessage.enabled?() do
 855       User.WelcomeChatMessage.post_message(user)
 856       {:ok, :enqueued}
 857     else
 858       {:ok, :noop}
 859     end
 860   end
 861
 862   def send_welcome_email(%User{email: email} = user) when is_binary(email) do
 863     if User.WelcomeEmail.enabled?() do
 864       User.WelcomeEmail.send_email(user)
 865       {:ok, :enqueued}
 866     else
 867       {:ok, :noop}
 868     end
 869   end
 870
 871   def send_welcome_email(_), do: {:ok, :noop}
 872
 873   @spec try_send_confirmation_email(User.t()) :: {:ok, :enqueued | :noop}
 874   def try_send_confirmation_email(%User{is_confirmed: false, email: email} = user)
 875       when is_binary(email) do
 876     if Config.get([:instance, :account_activation_required]) do
 877       send_confirmation_email(user)
 878       {:ok, :enqueued}
 879     else
 880       {:ok, :noop}
 881     end
 882   end
 883
 884   def try_send_confirmation_email(_), do: {:ok, :noop}
 885
 886   @spec send_confirmation_email(Uset.t()) :: User.t()
 887   def send_confirmation_email(%User{} = user) do
 888     user
 889     |> Pleroma.Emails.UserEmail.account_confirmation_email()
 890     |> Pleroma.Emails.Mailer.deliver_async()
 891
 892     user
 893   end
 894
 895   def needs_update?(%User{local: true}), do: false
 896
 897   def needs_update?(%User{local: false, last_refreshed_at: nil}), do: true
 898
 899   def needs_update?(%User{local: false} = user) do
 900     NaiveDateTime.diff(NaiveDateTime.utc_now(), user.last_refreshed_at) >= 86_400
 901   end
 902
 903   def needs_update?(_), do: true
 904
 905   @spec maybe_direct_follow(User.t(), User.t()) :: {:ok, User.t()} | {:error, String.t()}
 906
 907   # "Locked" (self-locked) users demand explicit authorization of follow requests
 908   def maybe_direct_follow(%User{} = follower, %User{local: true, is_locked: true} = followed) do
 909     follow(follower, followed, :follow_pending)
 910   end
 911
 912   def maybe_direct_follow(%User{} = follower, %User{local: true} = followed) do
 913     follow(follower, followed)
 914   end
 915
 916   def maybe_direct_follow(%User{} = follower, %User{} = followed) do
 917     if not ap_enabled?(followed) do
 918       follow(follower, followed)
 919     else
 920       {:ok, follower, followed}
 921     end
 922   end
 923
 924   @doc "A mass follow for local users. Respects blocks in both directions but does not create activities."
 925   @spec follow_all(User.t(), list(User.t())) :: {atom(), User.t()}
 926   def follow_all(follower, followeds) do
 927     followeds
 928     |> Enum.reject(fn followed -> blocks?(follower, followed) || blocks?(followed, follower) end)
 929     |> Enum.each(&follow(follower, &1, :follow_accept))
 930
 931     set_cache(follower)
 932   end
 933
 934   def follow(%User{} = follower, %User{} = followed, state \\ :follow_accept) do
 935     deny_follow_blocked = Config.get([:user, :deny_follow_blocked])
 936
 937     cond do
 938       not followed.is_active ->
 939         {:error, "Could not follow user: #{followed.nickname} is deactivated."}
 940
 941       deny_follow_blocked and blocks?(followed, follower) ->
 942         {:error, "Could not follow user: #{followed.nickname} blocked you."}
 943
 944       true ->
 945         FollowingRelationship.follow(follower, followed, state)
 946     end
 947   end
 948
 949   def unfollow(%User{ap_id: ap_id}, %User{ap_id: ap_id}) do
 950     {:error, "Not subscribed!"}
 951   end
 952
 953   @spec unfollow(User.t(), User.t()) :: {:ok, User.t(), Activity.t()} | {:error, String.t()}
 954   def unfollow(%User{} = follower, %User{} = followed) do
 955     case do_unfollow(follower, followed) do
 956       {:ok, follower, followed} ->
 957         {:ok, follower, Utils.fetch_latest_follow(follower, followed)}
 958
 959       error ->
 960         error
 961     end
 962   end
 963
 964   @spec do_unfollow(User.t(), User.t()) :: {:ok, User.t(), User.t()} | {:error, String.t()}
 965   defp do_unfollow(%User{} = follower, %User{} = followed) do
 966     case get_follow_state(follower, followed) do
 967       state when state in [:follow_pending, :follow_accept] ->
 968         FollowingRelationship.unfollow(follower, followed)
 969
 970       nil ->
 971         {:error, "Not subscribed!"}
 972     end
 973   end
 974
 975   @doc "Returns follow state as Pleroma.FollowingRelationship.State value"
 976   def get_follow_state(%User{} = follower, %User{} = following) do
 977     following_relationship = FollowingRelationship.get(follower, following)
 978     get_follow_state(follower, following, following_relationship)
 979   end
 980
 981   def get_follow_state(
 982         %User{} = follower,
 983         %User{} = following,
 984         following_relationship
 985       ) do
 986     case {following_relationship, following.local} do
 987       {nil, false} ->
 988         case Utils.fetch_latest_follow(follower, following) do
 989           %Activity{data: %{"state" => state}} when state in ["pending", "accept"] ->
 990             FollowingRelationship.state_to_enum(state)
 991
 992           _ ->
 993             nil
 994         end
 995
 996       {%{state: state}, _} ->
 997         state
 998
 999       {nil, _} ->
1000         nil
1001     end
1002   end
1003
1004   def locked?(%User{} = user) do
1005     user.is_locked || false
1006   end
1007
1008   def get_by_id(id) do
1009     Repo.get_by(User, id: id)
1010   end
1011
1012   def get_by_ap_id(ap_id) do
1013     Repo.get_by(User, ap_id: ap_id)
1014   end
1015
1016   def get_all_by_ap_id(ap_ids) do
1017     from(u in __MODULE__,
1018       where: u.ap_id in ^ap_ids
1019     )
1020     |> Repo.all()
1021   end
1022
1023   def get_all_by_ids(ids) do
1024     from(u in __MODULE__, where: u.id in ^ids)
1025     |> Repo.all()
1026   end
1027
1028   # This is mostly an SPC migration fix. This guesses the user nickname by taking the last part
1029   # of the ap_id and the domain and tries to get that user
1030   def get_by_guessed_nickname(ap_id) do
1031     domain = URI.parse(ap_id).host
1032     name = List.last(String.split(ap_id, "/"))
1033     nickname = "#{name}@#{domain}"
1034
1035     get_cached_by_nickname(nickname)
1036   end
1037
1038   def set_cache({:ok, user}), do: set_cache(user)
1039   def set_cache({:error, err}), do: {:error, err}
1040
1041   def set_cache(%User{} = user) do
1042     @cachex.put(:user_cache, "ap_id:#{user.ap_id}", user)
1043     @cachex.put(:user_cache, "nickname:#{user.nickname}", user)
1044     @cachex.put(:user_cache, "friends_ap_ids:#{user.nickname}", get_user_friends_ap_ids(user))
1045     {:ok, user}
1046   end
1047
1048   def update_and_set_cache(struct, params) do
1049     struct
1050     |> update_changeset(params)
1051     |> update_and_set_cache()
1052   end
1053
1054   def update_and_set_cache(changeset) do
1055     with {:ok, user} <- Repo.update(changeset, stale_error_field: :id) do
1056       set_cache(user)
1057     end
1058   end
1059
1060   def get_user_friends_ap_ids(user) do
1061     from(u in User.get_friends_query(user), select: u.ap_id)
1062     |> Repo.all()
1063   end
1064
1065   @spec get_cached_user_friends_ap_ids(User.t()) :: [String.t()]
1066   def get_cached_user_friends_ap_ids(user) do
1067     @cachex.fetch!(:user_cache, "friends_ap_ids:#{user.ap_id}", fn _ ->
1068       get_user_friends_ap_ids(user)
1069     end)
1070   end
1071
1072   def invalidate_cache(user) do
1073     @cachex.del(:user_cache, "ap_id:#{user.ap_id}")
1074     @cachex.del(:user_cache, "nickname:#{user.nickname}")
1075     @cachex.del(:user_cache, "friends_ap_ids:#{user.ap_id}")
1076     @cachex.del(:user_cache, "blocked_users_ap_ids:#{user.ap_id}")
1077     @cachex.del(:user_cache, "muted_users_ap_ids:#{user.ap_id}")
1078   end
1079
1080   @spec get_cached_by_ap_id(String.t()) :: User.t() | nil
1081   def get_cached_by_ap_id(ap_id) do
1082     key = "ap_id:#{ap_id}"
1083
1084     with {:ok, nil} <- @cachex.get(:user_cache, key),
1085          user when not is_nil(user) <- get_by_ap_id(ap_id),
1086          {:ok, true} <- @cachex.put(:user_cache, key, user) do
1087       user
1088     else
1089       {:ok, user} -> user
1090       nil -> nil
1091     end
1092   end
1093
1094   def get_cached_by_id(id) do
1095     key = "id:#{id}"
1096
1097     ap_id =
1098       @cachex.fetch!(:user_cache, key, fn _ ->
1099         user = get_by_id(id)
1100
1101         if user do
1102           @cachex.put(:user_cache, "ap_id:#{user.ap_id}", user)
1103           {:commit, user.ap_id}
1104         else
1105           {:ignore, ""}
1106         end
1107       end)
1108
1109     get_cached_by_ap_id(ap_id)
1110   end
1111
1112   def get_cached_by_nickname(nickname) do
1113     key = "nickname:#{nickname}"
1114
1115     @cachex.fetch!(:user_cache, key, fn _ ->
1116       case get_or_fetch_by_nickname(nickname) do
1117         {:ok, user} -> {:commit, user}
1118         {:error, _error} -> {:ignore, nil}
1119       end
1120     end)
1121   end
1122
1123   def get_cached_by_nickname_or_id(nickname_or_id, opts \\ []) do
1124     restrict_to_local = Config.get([:instance, :limit_to_local_content])
1125
1126     cond do
1127       is_integer(nickname_or_id) or FlakeId.flake_id?(nickname_or_id) ->
1128         get_cached_by_id(nickname_or_id) || get_cached_by_nickname(nickname_or_id)
1129
1130       restrict_to_local == false or not String.contains?(nickname_or_id, "@") ->
1131         get_cached_by_nickname(nickname_or_id)
1132
1133       restrict_to_local == :unauthenticated and match?(%User{}, opts[:for]) ->
1134         get_cached_by_nickname(nickname_or_id)
1135
1136       true ->
1137         nil
1138     end
1139   end
1140
1141   @spec get_by_nickname(String.t()) :: User.t() | nil
1142   def get_by_nickname(nickname) do
1143     Repo.get_by(User, nickname: nickname) ||
1144       if Regex.match?(~r(@#{Pleroma.Web.Endpoint.host()})i, nickname) do
1145         Repo.get_by(User, nickname: local_nickname(nickname))
1146       end
1147   end
1148
1149   def get_by_email(email), do: Repo.get_by(User, email: email)
1150
1151   def get_by_nickname_or_email(nickname_or_email) do
1152     get_by_nickname(nickname_or_email) || get_by_email(nickname_or_email)
1153   end
1154
1155   def fetch_by_nickname(nickname), do: ActivityPub.make_user_from_nickname(nickname)
1156
1157   def get_or_fetch_by_nickname(nickname) do
1158     with %User{} = user <- get_by_nickname(nickname) do
1159       {:ok, user}
1160     else
1161       _e ->
1162         with [_nick, _domain] <- String.split(nickname, "@"),
1163              {:ok, user} <- fetch_by_nickname(nickname) do
1164           {:ok, user}
1165         else
1166           _e -> {:error, "not found " <> nickname}
1167         end
1168     end
1169   end
1170
1171   @spec get_followers_query(User.t(), pos_integer() | nil) :: Ecto.Query.t()
1172   def get_followers_query(%User{} = user, nil) do
1173     User.Query.build(%{followers: user, is_active: true})
1174   end
1175
1176   def get_followers_query(%User{} = user, page) do
1177     user
1178     |> get_followers_query(nil)
1179     |> User.Query.paginate(page, 20)
1180   end
1181
1182   @spec get_followers_query(User.t()) :: Ecto.Query.t()
1183   def get_followers_query(%User{} = user), do: get_followers_query(user, nil)
1184
1185   @spec get_followers(User.t(), pos_integer() | nil) :: {:ok, list(User.t())}
1186   def get_followers(%User{} = user, page \\ nil) do
1187     user
1188     |> get_followers_query(page)
1189     |> Repo.all()
1190   end
1191
1192   @spec get_external_followers(User.t(), pos_integer() | nil) :: {:ok, list(User.t())}
1193   def get_external_followers(%User{} = user, page \\ nil) do
1194     user
1195     |> get_followers_query(page)
1196     |> User.Query.build(%{external: true})
1197     |> Repo.all()
1198   end
1199
1200   def get_followers_ids(%User{} = user, page \\ nil) do
1201     user
1202     |> get_followers_query(page)
1203     |> select([u], u.id)
1204     |> Repo.all()
1205   end
1206
1207   @spec get_friends_query(User.t(), pos_integer() | nil) :: Ecto.Query.t()
1208   def get_friends_query(%User{} = user, nil) do
1209     User.Query.build(%{friends: user, deactivated: false})
1210   end
1211
1212   def get_friends_query(%User{} = user, page) do
1213     user
1214     |> get_friends_query(nil)
1215     |> User.Query.paginate(page, 20)
1216   end
1217
1218   @spec get_friends_query(User.t()) :: Ecto.Query.t()
1219   def get_friends_query(%User{} = user), do: get_friends_query(user, nil)
1220
1221   def get_friends(%User{} = user, page \\ nil) do
1222     user
1223     |> get_friends_query(page)
1224     |> Repo.all()
1225   end
1226
1227   def get_friends_ap_ids(%User{} = user) do
1228     user
1229     |> get_friends_query(nil)
1230     |> select([u], u.ap_id)
1231     |> Repo.all()
1232   end
1233
1234   def get_friends_ids(%User{} = user, page \\ nil) do
1235     user
1236     |> get_friends_query(page)
1237     |> select([u], u.id)
1238     |> Repo.all()
1239   end
1240
1241   def increase_note_count(%User{} = user) do
1242     User
1243     |> where(id: ^user.id)
1244     |> update([u], inc: [note_count: 1])
1245     |> select([u], u)
1246     |> Repo.update_all([])
1247     |> case do
1248       {1, [user]} -> set_cache(user)
1249       _ -> {:error, user}
1250     end
1251   end
1252
1253   def decrease_note_count(%User{} = user) do
1254     User
1255     |> where(id: ^user.id)
1256     |> update([u],
1257       set: [
1258         note_count: fragment("greatest(0, note_count - 1)")
1259       ]
1260     )
1261     |> select([u], u)
1262     |> Repo.update_all([])
1263     |> case do
1264       {1, [user]} -> set_cache(user)
1265       _ -> {:error, user}
1266     end
1267   end
1268
1269   def update_note_count(%User{} = user, note_count \\ nil) do
1270     note_count =
1271       note_count ||
1272         from(
1273           a in Object,
1274           where: fragment("?->>'actor' = ? and ?->>'type' = 'Note'", a.data, ^user.ap_id, a.data),
1275           select: count(a.id)
1276         )
1277         |> Repo.one()
1278
1279     user
1280     |> cast(%{note_count: note_count}, [:note_count])
1281     |> update_and_set_cache()
1282   end
1283
1284   @spec maybe_fetch_follow_information(User.t()) :: User.t()
1285   def maybe_fetch_follow_information(user) do
1286     with {:ok, user} <- fetch_follow_information(user) do
1287       user
1288     else
1289       e ->
1290         Logger.error("Follower/Following counter update for #{user.ap_id} failed.\n#{inspect(e)}")
1291
1292         user
1293     end
1294   end
1295
1296   def fetch_follow_information(user) do
1297     with {:ok, info} <- ActivityPub.fetch_follow_information_for_user(user) do
1298       user
1299       |> follow_information_changeset(info)
1300       |> update_and_set_cache()
1301     end
1302   end
1303
1304   defp follow_information_changeset(user, params) do
1305     user
1306     |> cast(params, [
1307       :hide_followers,
1308       :hide_follows,
1309       :follower_count,
1310       :following_count,
1311       :hide_followers_count,
1312       :hide_follows_count
1313     ])
1314   end
1315
1316   @spec update_follower_count(User.t()) :: {:ok, User.t()}
1317   def update_follower_count(%User{} = user) do
1318     if user.local or !Config.get([:instance, :external_user_synchronization]) do
1319       follower_count = FollowingRelationship.follower_count(user)
1320
1321       user
1322       |> follow_information_changeset(%{follower_count: follower_count})
1323       |> update_and_set_cache
1324     else
1325       {:ok, maybe_fetch_follow_information(user)}
1326     end
1327   end
1328
1329   @spec update_following_count(User.t()) :: {:ok, User.t()}
1330   def update_following_count(%User{local: false} = user) do
1331     if Config.get([:instance, :external_user_synchronization]) do
1332       {:ok, maybe_fetch_follow_information(user)}
1333     else
1334       {:ok, user}
1335     end
1336   end
1337
1338   def update_following_count(%User{local: true} = user) do
1339     following_count = FollowingRelationship.following_count(user)
1340
1341     user
1342     |> follow_information_changeset(%{following_count: following_count})
1343     |> update_and_set_cache()
1344   end
1345
1346   @spec get_users_from_set([String.t()], keyword()) :: [User.t()]
1347   def get_users_from_set(ap_ids, opts \\ []) do
1348     local_only = Keyword.get(opts, :local_only, true)
1349     criteria = %{ap_id: ap_ids, is_active: true}
1350     criteria = if local_only, do: Map.put(criteria, :local, true), else: criteria
1351
1352     User.Query.build(criteria)
1353     |> Repo.all()
1354   end
1355
1356   @spec get_recipients_from_activity(Activity.t()) :: [User.t()]
1357   def get_recipients_from_activity(%Activity{recipients: to, actor: actor}) do
1358     to = [actor | to]
1359
1360     query = User.Query.build(%{recipients_from_activity: to, local: true, is_active: true})
1361
1362     query
1363     |> Repo.all()
1364   end
1365
1366   @spec mute(User.t(), User.t(), map()) ::
1367           {:ok, list(UserRelationship.t())} | {:error, String.t()}
1368   def mute(%User{} = muter, %User{} = mutee, params \\ %{}) do
1369     notifications? = Map.get(params, :notifications, true)
1370     expires_in = Map.get(params, :expires_in, 0)
1371
1372     with {:ok, user_mute} <- UserRelationship.create_mute(muter, mutee),
1373          {:ok, user_notification_mute} <-
1374            (notifications? && UserRelationship.create_notification_mute(muter, mutee)) ||
1375              {:ok, nil} do
1376       if expires_in > 0 do
1377         Pleroma.Workers.MuteExpireWorker.enqueue(
1378           "unmute_user",
1379           %{"muter_id" => muter.id, "mutee_id" => mutee.id},
1380           schedule_in: expires_in
1381         )
1382       end
1383
1384       @cachex.del(:user_cache, "muted_users_ap_ids:#{muter.ap_id}")
1385
1386       {:ok, Enum.filter([user_mute, user_notification_mute], & &1)}
1387     end
1388   end
1389
1390   def unmute(%User{} = muter, %User{} = mutee) do
1391     with {:ok, user_mute} <- UserRelationship.delete_mute(muter, mutee),
1392          {:ok, user_notification_mute} <-
1393            UserRelationship.delete_notification_mute(muter, mutee) do
1394       @cachex.del(:user_cache, "muted_users_ap_ids:#{muter.ap_id}")
1395       {:ok, [user_mute, user_notification_mute]}
1396     end
1397   end
1398
1399   def unmute(muter_id, mutee_id) do
1400     with {:muter, %User{} = muter} <- {:muter, User.get_by_id(muter_id)},
1401          {:mutee, %User{} = mutee} <- {:mutee, User.get_by_id(mutee_id)} do
1402       unmute(muter, mutee)
1403     else
1404       {who, result} = error ->
1405         Logger.warn(
1406           "User.unmute/2 failed. #{who}: #{result}, muter_id: #{muter_id}, mutee_id: #{mutee_id}"
1407         )
1408
1409         {:error, error}
1410     end
1411   end
1412
1413   def subscribe(%User{} = subscriber, %User{} = target) do
1414     deny_follow_blocked = Config.get([:user, :deny_follow_blocked])
1415
1416     if blocks?(target, subscriber) and deny_follow_blocked do
1417       {:error, "Could not subscribe: #{target.nickname} is blocking you"}
1418     else
1419       # Note: the relationship is inverse: subscriber acts as relationship target
1420       UserRelationship.create_inverse_subscription(target, subscriber)
1421     end
1422   end
1423
1424   def subscribe(%User{} = subscriber, %{ap_id: ap_id}) do
1425     with %User{} = subscribee <- get_cached_by_ap_id(ap_id) do
1426       subscribe(subscriber, subscribee)
1427     end
1428   end
1429
1430   def unsubscribe(%User{} = unsubscriber, %User{} = target) do
1431     # Note: the relationship is inverse: subscriber acts as relationship target
1432     UserRelationship.delete_inverse_subscription(target, unsubscriber)
1433   end
1434
1435   def unsubscribe(%User{} = unsubscriber, %{ap_id: ap_id}) do
1436     with %User{} = user <- get_cached_by_ap_id(ap_id) do
1437       unsubscribe(unsubscriber, user)
1438     end
1439   end
1440
1441   def block(%User{} = blocker, %User{} = blocked) do
1442     # sever any follow relationships to prevent leaks per activitypub (Pleroma issue #213)
1443     blocker =
1444       if following?(blocker, blocked) do
1445         {:ok, blocker, _} = unfollow(blocker, blocked)
1446         blocker
1447       else
1448         blocker
1449       end
1450
1451     # clear any requested follows as well
1452     blocked =
1453       case CommonAPI.reject_follow_request(blocked, blocker) do
1454         {:ok, %User{} = updated_blocked} -> updated_blocked
1455         nil -> blocked
1456       end
1457
1458     unsubscribe(blocked, blocker)
1459
1460     unfollowing_blocked = Config.get([:activitypub, :unfollow_blocked], true)
1461     if unfollowing_blocked && following?(blocked, blocker), do: unfollow(blocked, blocker)
1462
1463     {:ok, blocker} = update_follower_count(blocker)
1464     {:ok, blocker, _} = Participation.mark_all_as_read(blocker, blocked)
1465     add_to_block(blocker, blocked)
1466   end
1467
1468   # helper to handle the block given only an actor's AP id
1469   def block(%User{} = blocker, %{ap_id: ap_id}) do
1470     block(blocker, get_cached_by_ap_id(ap_id))
1471   end
1472
1473   def unblock(%User{} = blocker, %User{} = blocked) do
1474     remove_from_block(blocker, blocked)
1475   end
1476
1477   # helper to handle the block given only an actor's AP id
1478   def unblock(%User{} = blocker, %{ap_id: ap_id}) do
1479     unblock(blocker, get_cached_by_ap_id(ap_id))
1480   end
1481
1482   def mutes?(nil, _), do: false
1483   def mutes?(%User{} = user, %User{} = target), do: mutes_user?(user, target)
1484
1485   def mutes_user?(%User{} = user, %User{} = target) do
1486     UserRelationship.mute_exists?(user, target)
1487   end
1488
1489   @spec muted_notifications?(User.t() | nil, User.t() | map()) :: boolean()
1490   def muted_notifications?(nil, _), do: false
1491
1492   def muted_notifications?(%User{} = user, %User{} = target),
1493     do: UserRelationship.notification_mute_exists?(user, target)
1494
1495   def blocks?(nil, _), do: false
1496
1497   def blocks?(%User{} = user, %User{} = target) do
1498     blocks_user?(user, target) ||
1499       (blocks_domain?(user, target) and not User.following?(user, target))
1500   end
1501
1502   def blocks_user?(%User{} = user, %User{} = target) do
1503     UserRelationship.block_exists?(user, target)
1504   end
1505
1506   def blocks_user?(_, _), do: false
1507
1508   def blocks_domain?(%User{} = user, %User{} = target) do
1509     domain_blocks = Pleroma.Web.ActivityPub.MRF.subdomains_regex(user.domain_blocks)
1510     %{host: host} = URI.parse(target.ap_id)
1511     Pleroma.Web.ActivityPub.MRF.subdomain_match?(domain_blocks, host)
1512   end
1513
1514   def blocks_domain?(_, _), do: false
1515
1516   def subscribed_to?(%User{} = user, %User{} = target) do
1517     # Note: the relationship is inverse: subscriber acts as relationship target
1518     UserRelationship.inverse_subscription_exists?(target, user)
1519   end
1520
1521   def subscribed_to?(%User{} = user, %{ap_id: ap_id}) do
1522     with %User{} = target <- get_cached_by_ap_id(ap_id) do
1523       subscribed_to?(user, target)
1524     end
1525   end
1526
1527   @doc """
1528   Returns map of outgoing (blocked, muted etc.) relationships' user AP IDs by relation type.
1529   E.g. `outgoing_relationships_ap_ids(user, [:block])` -> `%{block: ["https://some.site/users/userapid"]}`
1530   """
1531   @spec outgoing_relationships_ap_ids(User.t(), list(atom())) :: %{atom() => list(String.t())}
1532   def outgoing_relationships_ap_ids(_user, []), do: %{}
1533
1534   def outgoing_relationships_ap_ids(nil, _relationship_types), do: %{}
1535
1536   def outgoing_relationships_ap_ids(%User{} = user, relationship_types)
1537       when is_list(relationship_types) do
1538     db_result =
1539       user
1540       |> assoc(:outgoing_relationships)
1541       |> join(:inner, [user_rel], u in assoc(user_rel, :target))
1542       |> where([user_rel, u], user_rel.relationship_type in ^relationship_types)
1543       |> select([user_rel, u], [user_rel.relationship_type, fragment("array_agg(?)", u.ap_id)])
1544       |> group_by([user_rel, u], user_rel.relationship_type)
1545       |> Repo.all()
1546       |> Enum.into(%{}, fn [k, v] -> {k, v} end)
1547
1548     Enum.into(
1549       relationship_types,
1550       %{},
1551       fn rel_type -> {rel_type, db_result[rel_type] || []} end
1552     )
1553   end
1554
1555   def incoming_relationships_ungrouped_ap_ids(user, relationship_types, ap_ids \\ nil)
1556
1557   def incoming_relationships_ungrouped_ap_ids(_user, [], _ap_ids), do: []
1558
1559   def incoming_relationships_ungrouped_ap_ids(nil, _relationship_types, _ap_ids), do: []
1560
1561   def incoming_relationships_ungrouped_ap_ids(%User{} = user, relationship_types, ap_ids)
1562       when is_list(relationship_types) do
1563     user
1564     |> assoc(:incoming_relationships)
1565     |> join(:inner, [user_rel], u in assoc(user_rel, :source))
1566     |> where([user_rel, u], user_rel.relationship_type in ^relationship_types)
1567     |> maybe_filter_on_ap_id(ap_ids)
1568     |> select([user_rel, u], u.ap_id)
1569     |> distinct(true)
1570     |> Repo.all()
1571   end
1572
1573   defp maybe_filter_on_ap_id(query, ap_ids) when is_list(ap_ids) do
1574     where(query, [user_rel, u], u.ap_id in ^ap_ids)
1575   end
1576
1577   defp maybe_filter_on_ap_id(query, _ap_ids), do: query
1578
1579   def set_activation_async(user, status \\ true) do
1580     BackgroundWorker.enqueue("user_activation", %{"user_id" => user.id, "status" => status})
1581   end
1582
1583   @spec set_activation([User.t()], boolean()) :: {:ok, User.t()} | {:error, Changeset.t()}
1584   def set_activation(users, status) when is_list(users) do
1585     Repo.transaction(fn ->
1586       for user <- users, do: set_activation(user, status)
1587     end)
1588   end
1589
1590   @spec set_activation(User.t(), boolean()) :: {:ok, User.t()} | {:error, Changeset.t()}
1591   def set_activation(%User{} = user, status) do
1592     with {:ok, user} <- set_activation_status(user, status) do
1593       user
1594       |> get_followers()
1595       |> Enum.filter(& &1.local)
1596       |> Enum.each(&set_cache(update_following_count(&1)))
1597
1598       # Only update local user counts, remote will be update during the next pull.
1599       user
1600       |> get_friends()
1601       |> Enum.filter(& &1.local)
1602       |> Enum.each(&do_unfollow(user, &1))
1603
1604       {:ok, user}
1605     end
1606   end
1607
1608   def approve(users) when is_list(users) do
1609     Repo.transaction(fn ->
1610       Enum.map(users, fn user ->
1611         with {:ok, user} <- approve(user), do: user
1612       end)
1613     end)
1614   end
1615
1616   def approve(%User{is_approved: false} = user) do
1617     with chg <- change(user, is_approved: true),
1618          {:ok, user} <- update_and_set_cache(chg) do
1619       post_register_action(user)
1620       {:ok, user}
1621     end
1622   end
1623
1624   def approve(%User{} = user), do: {:ok, user}
1625
1626   def confirm(users) when is_list(users) do
1627     Repo.transaction(fn ->
1628       Enum.map(users, fn user ->
1629         with {:ok, user} <- confirm(user), do: user
1630       end)
1631     end)
1632   end
1633
1634   def confirm(%User{is_confirmed: false} = user) do
1635     with chg <- confirmation_changeset(user, set_confirmation: true),
1636          {:ok, user} <- update_and_set_cache(chg) do
1637       post_register_action(user)
1638       {:ok, user}
1639     end
1640   end
1641
1642   def confirm(%User{} = user), do: {:ok, user}
1643
1644   def update_notification_settings(%User{} = user, settings) do
1645     user
1646     |> cast(%{notification_settings: settings}, [])
1647     |> cast_embed(:notification_settings)
1648     |> validate_required([:notification_settings])
1649     |> update_and_set_cache()
1650   end
1651
1652   @spec purge_user_changeset(User.t()) :: Changeset.t()
1653   def purge_user_changeset(user) do
1654     # "Right to be forgotten"
1655     # https://gdpr.eu/right-to-be-forgotten/
1656     change(user, %{
1657       bio: "",
1658       raw_bio: nil,
1659       email: nil,
1660       name: nil,
1661       password_hash: nil,
1662       keys: nil,
1663       public_key: nil,
1664       avatar: %{},
1665       tags: [],
1666       last_refreshed_at: nil,
1667       last_digest_emailed_at: nil,
1668       banner: %{},
1669       background: %{},
1670       note_count: 0,
1671       follower_count: 0,
1672       following_count: 0,
1673       is_locked: false,
1674       is_confirmed: true,
1675       password_reset_pending: false,
1676       is_approved: true,
1677       registration_reason: nil,
1678       confirmation_token: nil,
1679       domain_blocks: [],
1680       is_active: false,
1681       ap_enabled: false,
1682       is_moderator: false,
1683       is_admin: false,
1684       mastofe_settings: nil,
1685       mascot: nil,
1686       emoji: %{},
1687       pleroma_settings_store: %{},
1688       fields: [],
1689       raw_fields: [],
1690       is_discoverable: false,
1691       also_known_as: []
1692     })
1693   end
1694
1695   def delete(users) when is_list(users) do
1696     for user <- users, do: delete(user)
1697   end
1698
1699   def delete(%User{} = user) do
1700     BackgroundWorker.enqueue("delete_user", %{"user_id" => user.id})
1701   end
1702
1703   defp delete_and_invalidate_cache(%User{} = user) do
1704     invalidate_cache(user)
1705     Repo.delete(user)
1706   end
1707
1708   defp delete_or_deactivate(%User{local: false} = user), do: delete_and_invalidate_cache(user)
1709
1710   defp delete_or_deactivate(%User{local: true} = user) do
1711     status = account_status(user)
1712
1713     case status do
1714       :confirmation_pending ->
1715         delete_and_invalidate_cache(user)
1716
1717       :approval_pending ->
1718         delete_and_invalidate_cache(user)
1719
1720       _ ->
1721         user
1722         |> purge_user_changeset()
1723         |> update_and_set_cache()
1724     end
1725   end
1726
1727   def perform(:force_password_reset, user), do: force_password_reset(user)
1728
1729   @spec perform(atom(), User.t()) :: {:ok, User.t()}
1730   def perform(:delete, %User{} = user) do
1731     # Remove all relationships
1732     user
1733     |> get_followers()
1734     |> Enum.each(fn follower ->
1735       ActivityPub.unfollow(follower, user)
1736       unfollow(follower, user)
1737     end)
1738
1739     user
1740     |> get_friends()
1741     |> Enum.each(fn followed ->
1742       ActivityPub.unfollow(user, followed)
1743       unfollow(user, followed)
1744     end)
1745
1746     delete_user_activities(user)
1747     delete_notifications_from_user_activities(user)
1748
1749     delete_outgoing_pending_follow_requests(user)
1750
1751     delete_or_deactivate(user)
1752   end
1753
1754   def perform(:set_activation_async, user, status), do: set_activation(user, status)
1755
1756   @spec external_users_query() :: Ecto.Query.t()
1757   def external_users_query do
1758     User.Query.build(%{
1759       external: true,
1760       active: true,
1761       order_by: :id
1762     })
1763   end
1764
1765   @spec external_users(keyword()) :: [User.t()]
1766   def external_users(opts \\ []) do
1767     query =
1768       external_users_query()
1769       |> select([u], struct(u, [:id, :ap_id]))
1770
1771     query =
1772       if opts[:max_id],
1773         do: where(query, [u], u.id > ^opts[:max_id]),
1774         else: query
1775
1776     query =
1777       if opts[:limit],
1778         do: limit(query, ^opts[:limit]),
1779         else: query
1780
1781     Repo.all(query)
1782   end
1783
1784   def delete_notifications_from_user_activities(%User{ap_id: ap_id}) do
1785     Notification
1786     |> join(:inner, [n], activity in assoc(n, :activity))
1787     |> where([n, a], fragment("? = ?", a.actor, ^ap_id))
1788     |> Repo.delete_all()
1789   end
1790
1791   def delete_user_activities(%User{ap_id: ap_id} = user) do
1792     ap_id
1793     |> Activity.Queries.by_actor()
1794     |> Repo.chunk_stream(50, :batches)
1795     |> Stream.each(fn activities ->
1796       Enum.each(activities, fn activity -> delete_activity(activity, user) end)
1797     end)
1798     |> Stream.run()
1799   end
1800
1801   defp delete_activity(%{data: %{"type" => "Create", "object" => object}} = activity, user) do
1802     with {_, %Object{}} <- {:find_object, Object.get_by_ap_id(object)},
1803          {:ok, delete_data, _} <- Builder.delete(user, object) do
1804       Pipeline.common_pipeline(delete_data, local: user.local)
1805     else
1806       {:find_object, nil} ->
1807         # We have the create activity, but not the object, it was probably pruned.
1808         # Insert a tombstone and try again
1809         with {:ok, tombstone_data, _} <- Builder.tombstone(user.ap_id, object),
1810              {:ok, _tombstone} <- Object.create(tombstone_data) do
1811           delete_activity(activity, user)
1812         end
1813
1814       e ->
1815         Logger.error("Could not delete #{object} created by #{activity.data["ap_id"]}")
1816         Logger.error("Error: #{inspect(e)}")
1817     end
1818   end
1819
1820   defp delete_activity(%{data: %{"type" => type}} = activity, user)
1821        when type in ["Like", "Announce"] do
1822     {:ok, undo, _} = Builder.undo(user, activity)
1823     Pipeline.common_pipeline(undo, local: user.local)
1824   end
1825
1826   defp delete_activity(_activity, _user), do: "Doing nothing"
1827
1828   defp delete_outgoing_pending_follow_requests(user) do
1829     user
1830     |> FollowingRelationship.outgoing_pending_follow_requests_query()
1831     |> Repo.delete_all()
1832   end
1833
1834   def html_filter_policy(%User{no_rich_text: true}) do
1835     Pleroma.HTML.Scrubber.TwitterText
1836   end
1837
1838   def html_filter_policy(_), do: Config.get([:markup, :scrub_policy])
1839
1840   def fetch_by_ap_id(ap_id), do: ActivityPub.make_user_from_ap_id(ap_id)
1841
1842   def get_or_fetch_by_ap_id(ap_id) do
1843     cached_user = get_cached_by_ap_id(ap_id)
1844
1845     maybe_fetched_user = needs_update?(cached_user) && fetch_by_ap_id(ap_id)
1846
1847     case {cached_user, maybe_fetched_user} do
1848       {_, {:ok, %User{} = user}} ->
1849         {:ok, user}
1850
1851       {%User{} = user, _} ->
1852         {:ok, user}
1853
1854       _ ->
1855         {:error, :not_found}
1856     end
1857   end
1858
1859   @doc """
1860   Creates an internal service actor by URI if missing.
1861   Optionally takes nickname for addressing.
1862   """
1863   @spec get_or_create_service_actor_by_ap_id(String.t(), String.t()) :: User.t() | nil
1864   def get_or_create_service_actor_by_ap_id(uri, nickname) do
1865     {_, user} =
1866       case get_cached_by_ap_id(uri) do
1867         nil ->
1868           with {:error, %{errors: errors}} <- create_service_actor(uri, nickname) do
1869             Logger.error("Cannot create service actor: #{uri}/.\n#{inspect(errors)}")
1870             {:error, nil}
1871           end
1872
1873         %User{invisible: false} = user ->
1874           set_invisible(user)
1875
1876         user ->
1877           {:ok, user}
1878       end
1879
1880     user
1881   end
1882
1883   @spec set_invisible(User.t()) :: {:ok, User.t()}
1884   defp set_invisible(user) do
1885     user
1886     |> change(%{invisible: true})
1887     |> update_and_set_cache()
1888   end
1889
1890   @spec create_service_actor(String.t(), String.t()) ::
1891           {:ok, User.t()} | {:error, Ecto.Changeset.t()}
1892   defp create_service_actor(uri, nickname) do
1893     %User{
1894       invisible: true,
1895       local: true,
1896       ap_id: uri,
1897       nickname: nickname,
1898       follower_address: uri <> "/followers"
1899     }
1900     |> change
1901     |> unique_constraint(:nickname)
1902     |> Repo.insert()
1903     |> set_cache()
1904   end
1905
1906   def public_key(%{public_key: public_key_pem}) when is_binary(public_key_pem) do
1907     key =
1908       public_key_pem
1909       |> :public_key.pem_decode()
1910       |> hd()
1911       |> :public_key.pem_entry_decode()
1912
1913     {:ok, key}
1914   end
1915
1916   def public_key(_), do: {:error, "key not found"}
1917
1918   def get_public_key_for_ap_id(ap_id) do
1919     with {:ok, %User{} = user} <- get_or_fetch_by_ap_id(ap_id),
1920          {:ok, public_key} <- public_key(user) do
1921       {:ok, public_key}
1922     else
1923       _ -> :error
1924     end
1925   end
1926
1927   def ap_enabled?(%User{local: true}), do: true
1928   def ap_enabled?(%User{ap_enabled: ap_enabled}), do: ap_enabled
1929   def ap_enabled?(_), do: false
1930
1931   @doc "Gets or fetch a user by uri or nickname."
1932   @spec get_or_fetch(String.t()) :: {:ok, User.t()} | {:error, String.t()}
1933   def get_or_fetch("http" <> _host = uri), do: get_or_fetch_by_ap_id(uri)
1934   def get_or_fetch(nickname), do: get_or_fetch_by_nickname(nickname)
1935
1936   # wait a period of time and return newest version of the User structs
1937   # this is because we have synchronous follow APIs and need to simulate them
1938   # with an async handshake
1939   def wait_and_refresh(_, %User{local: true} = a, %User{local: true} = b) do
1940     with %User{} = a <- get_cached_by_id(a.id),
1941          %User{} = b <- get_cached_by_id(b.id) do
1942       {:ok, a, b}
1943     else
1944       nil -> :error
1945     end
1946   end
1947
1948   def wait_and_refresh(timeout, %User{} = a, %User{} = b) do
1949     with :ok <- :timer.sleep(timeout),
1950          %User{} = a <- get_cached_by_id(a.id),
1951          %User{} = b <- get_cached_by_id(b.id) do
1952       {:ok, a, b}
1953     else
1954       nil -> :error
1955     end
1956   end
1957
1958   def parse_bio(bio) when is_binary(bio) and bio != "" do
1959     bio
1960     |> CommonUtils.format_input("text/plain", mentions_format: :full)
1961     |> elem(0)
1962   end
1963
1964   def parse_bio(_), do: ""
1965
1966   def parse_bio(bio, user) when is_binary(bio) and bio != "" do
1967     # TODO: get profile URLs other than user.ap_id
1968     profile_urls = [user.ap_id]
1969
1970     bio
1971     |> CommonUtils.format_input("text/plain",
1972       mentions_format: :full,
1973       rel: &RelMe.maybe_put_rel_me(&1, profile_urls)
1974     )
1975     |> elem(0)
1976   end
1977
1978   def parse_bio(_, _), do: ""
1979
1980   def tag(user_identifiers, tags) when is_list(user_identifiers) do
1981     Repo.transaction(fn ->
1982       for user_identifier <- user_identifiers, do: tag(user_identifier, tags)
1983     end)
1984   end
1985
1986   def tag(nickname, tags) when is_binary(nickname),
1987     do: tag(get_by_nickname(nickname), tags)
1988
1989   def tag(%User{} = user, tags),
1990     do: update_tags(user, Enum.uniq((user.tags || []) ++ normalize_tags(tags)))
1991
1992   def untag(user_identifiers, tags) when is_list(user_identifiers) do
1993     Repo.transaction(fn ->
1994       for user_identifier <- user_identifiers, do: untag(user_identifier, tags)
1995     end)
1996   end
1997
1998   def untag(nickname, tags) when is_binary(nickname),
1999     do: untag(get_by_nickname(nickname), tags)
2000
2001   def untag(%User{} = user, tags),
2002     do: update_tags(user, (user.tags || []) -- normalize_tags(tags))
2003
2004   defp update_tags(%User{} = user, new_tags) do
2005     {:ok, updated_user} =
2006       user
2007       |> change(%{tags: new_tags})
2008       |> update_and_set_cache()
2009
2010     updated_user
2011   end
2012
2013   defp normalize_tags(tags) do
2014     [tags]
2015     |> List.flatten()
2016     |> Enum.map(&String.downcase/1)
2017   end
2018
2019   defp local_nickname_regex do
2020     if Config.get([:instance, :extended_nickname_format]) do
2021       @extended_local_nickname_regex
2022     else
2023       @strict_local_nickname_regex
2024     end
2025   end
2026
2027   def local_nickname(nickname_or_mention) do
2028     nickname_or_mention
2029     |> full_nickname()
2030     |> String.split("@")
2031     |> hd()
2032   end
2033
2034   def full_nickname(%User{} = user) do
2035     if String.contains?(user.nickname, "@") do
2036       user.nickname
2037     else
2038       %{host: host} = URI.parse(user.ap_id)
2039       user.nickname <> "@" <> host
2040     end
2041   end
2042
2043   def full_nickname(nickname_or_mention),
2044     do: String.trim_leading(nickname_or_mention, "@")
2045
2046   def error_user(ap_id) do
2047     %User{
2048       name: ap_id,
2049       ap_id: ap_id,
2050       nickname: "erroruser@example.com",
2051       inserted_at: NaiveDateTime.utc_now()
2052     }
2053   end
2054
2055   @spec all_superusers() :: [User.t()]
2056   def all_superusers do
2057     User.Query.build(%{super_users: true, local: true, is_active: true})
2058     |> Repo.all()
2059   end
2060
2061   def muting_reblogs?(%User{} = user, %User{} = target) do
2062     UserRelationship.reblog_mute_exists?(user, target)
2063   end
2064
2065   def showing_reblogs?(%User{} = user, %User{} = target) do
2066     not muting_reblogs?(user, target)
2067   end
2068
2069   @doc """
2070   The function returns a query to get users with no activity for given interval of days.
2071   Inactive users are those who didn't read any notification, or had any activity where
2072   the user is the activity's actor, during `inactivity_threshold` days.
2073   Deactivated users will not appear in this list.
2074
2075   ## Examples
2076
2077       iex> Pleroma.User.list_inactive_users()
2078       %Ecto.Query{}
2079   """
2080   @spec list_inactive_users_query(integer()) :: Ecto.Query.t()
2081   def list_inactive_users_query(inactivity_threshold \\ 7) do
2082     negative_inactivity_threshold = -inactivity_threshold
2083     now = NaiveDateTime.truncate(NaiveDateTime.utc_now(), :second)
2084     # Subqueries are not supported in `where` clauses, join gets too complicated.
2085     has_read_notifications =
2086       from(n in Pleroma.Notification,
2087         where: n.seen == true,
2088         group_by: n.id,
2089         having: max(n.updated_at) > datetime_add(^now, ^negative_inactivity_threshold, "day"),
2090         select: n.user_id
2091       )
2092       |> Pleroma.Repo.all()
2093
2094     from(u in Pleroma.User,
2095       left_join: a in Pleroma.Activity,
2096       on: u.ap_id == a.actor,
2097       where: not is_nil(u.nickname),
2098       where: u.is_active == ^true,
2099       where: u.id not in ^has_read_notifications,
2100       group_by: u.id,
2101       having:
2102         max(a.inserted_at) < datetime_add(^now, ^negative_inactivity_threshold, "day") or
2103           is_nil(max(a.inserted_at))
2104     )
2105   end
2106
2107   @doc """
2108   Enable or disable email notifications for user
2109
2110   ## Examples
2111
2112       iex> Pleroma.User.switch_email_notifications(Pleroma.User{email_notifications: %{"digest" => false}}, "digest", true)
2113       Pleroma.User{email_notifications: %{"digest" => true}}
2114
2115       iex> Pleroma.User.switch_email_notifications(Pleroma.User{email_notifications: %{"digest" => true}}, "digest", false)
2116       Pleroma.User{email_notifications: %{"digest" => false}}
2117   """
2118   @spec switch_email_notifications(t(), String.t(), boolean()) ::
2119           {:ok, t()} | {:error, Ecto.Changeset.t()}
2120   def switch_email_notifications(user, type, status) do
2121     User.update_email_notifications(user, %{type => status})
2122   end
2123
2124   @doc """
2125   Set `last_digest_emailed_at` value for the user to current time
2126   """
2127   @spec touch_last_digest_emailed_at(t()) :: t()
2128   def touch_last_digest_emailed_at(user) do
2129     now = NaiveDateTime.truncate(NaiveDateTime.utc_now(), :second)
2130
2131     {:ok, updated_user} =
2132       user
2133       |> change(%{last_digest_emailed_at: now})
2134       |> update_and_set_cache()
2135
2136     updated_user
2137   end
2138
2139   @spec set_confirmation(User.t(), boolean()) :: {:ok, User.t()} | {:error, Changeset.t()}
2140   def set_confirmation(%User{} = user, bool) do
2141     user
2142     |> confirmation_changeset(set_confirmation: bool)
2143     |> update_and_set_cache()
2144   end
2145
2146   def get_mascot(%{mascot: %{} = mascot}) when not is_nil(mascot) do
2147     mascot
2148   end
2149
2150   def get_mascot(%{mascot: mascot}) when is_nil(mascot) do
2151     # use instance-default
2152     config = Config.get([:assets, :mascots])
2153     default_mascot = Config.get([:assets, :default_mascot])
2154     mascot = Keyword.get(config, default_mascot)
2155
2156     %{
2157       "id" => "default-mascot",
2158       "url" => mascot[:url],
2159       "preview_url" => mascot[:url],
2160       "pleroma" => %{
2161         "mime_type" => mascot[:mime_type]
2162       }
2163     }
2164   end
2165
2166   def ensure_keys_present(%{keys: keys} = user) when not is_nil(keys), do: {:ok, user}
2167
2168   def ensure_keys_present(%User{} = user) do
2169     with {:ok, pem} <- Keys.generate_rsa_pem() do
2170       user
2171       |> cast(%{keys: pem}, [:keys])
2172       |> validate_required([:keys])
2173       |> update_and_set_cache()
2174     end
2175   end
2176
2177   def get_ap_ids_by_nicknames(nicknames) do
2178     from(u in User,
2179       where: u.nickname in ^nicknames,
2180       select: u.ap_id
2181     )
2182     |> Repo.all()
2183   end
2184
2185   defp put_password_hash(
2186          %Ecto.Changeset{valid?: true, changes: %{password: password}} = changeset
2187        ) do
2188     change(changeset, password_hash: Pleroma.Password.Pbkdf2.hash_pwd_salt(password))
2189   end
2190
2191   defp put_password_hash(changeset), do: changeset
2192
2193   def is_internal_user?(%User{nickname: nil}), do: true
2194   def is_internal_user?(%User{local: true, nickname: "internal." <> _}), do: true
2195   def is_internal_user?(_), do: false
2196
2197   # A hack because user delete activities have a fake id for whatever reason
2198   # TODO: Get rid of this
2199   def get_delivered_users_by_object_id("pleroma:fake_object_id"), do: []
2200
2201   def get_delivered_users_by_object_id(object_id) do
2202     from(u in User,
2203       inner_join: delivery in assoc(u, :deliveries),
2204       where: delivery.object_id == ^object_id
2205     )
2206     |> Repo.all()
2207   end
2208
2209   def change_email(user, email) do
2210     user
2211     |> cast(%{email: email}, [:email])
2212     |> validate_required([:email])
2213     |> unique_constraint(:email)
2214     |> validate_format(:email, @email_regex)
2215     |> update_and_set_cache()
2216   end
2217
2218   # Internal function; public one is `deactivate/2`
2219   defp set_activation_status(user, status) do
2220     user
2221     |> cast(%{is_active: status}, [:is_active])
2222     |> update_and_set_cache()
2223   end
2224
2225   def update_banner(user, banner) do
2226     user
2227     |> cast(%{banner: banner}, [:banner])
2228     |> update_and_set_cache()
2229   end
2230
2231   def update_background(user, background) do
2232     user
2233     |> cast(%{background: background}, [:background])
2234     |> update_and_set_cache()
2235   end
2236
2237   def roles(%{is_moderator: is_moderator, is_admin: is_admin}) do
2238     %{
2239       admin: is_admin,
2240       moderator: is_moderator
2241     }
2242   end
2243
2244   def validate_fields(changeset, remote? \\ false) do
2245     limit_name = if remote?, do: :max_remote_account_fields, else: :max_account_fields
2246     limit = Config.get([:instance, limit_name], 0)
2247
2248     changeset
2249     |> validate_length(:fields, max: limit)
2250     |> validate_change(:fields, fn :fields, fields ->
2251       if Enum.all?(fields, &valid_field?/1) do
2252         []
2253       else
2254         [fields: "invalid"]
2255       end
2256     end)
2257   end
2258
2259   defp valid_field?(%{"name" => name, "value" => value}) do
2260     name_limit = Config.get([:instance, :account_field_name_length], 255)
2261     value_limit = Config.get([:instance, :account_field_value_length], 255)
2262
2263     is_binary(name) && is_binary(value) && String.length(name) <= name_limit &&
2264       String.length(value) <= value_limit
2265   end
2266
2267   defp valid_field?(_), do: false
2268
2269   defp truncate_field(%{"name" => name, "value" => value}) do
2270     {name, _chopped} =
2271       String.split_at(name, Config.get([:instance, :account_field_name_length], 255))
2272
2273     {value, _chopped} =
2274       String.split_at(value, Config.get([:instance, :account_field_value_length], 255))
2275
2276     %{"name" => name, "value" => value}
2277   end
2278
2279   def admin_api_update(user, params) do
2280     user
2281     |> cast(params, [
2282       :is_moderator,
2283       :is_admin,
2284       :show_role
2285     ])
2286     |> update_and_set_cache()
2287   end
2288
2289   @doc "Signs user out of all applications"
2290   def global_sign_out(user) do
2291     OAuth.Authorization.delete_user_authorizations(user)
2292     OAuth.Token.delete_user_tokens(user)
2293   end
2294
2295   def mascot_update(user, url) do
2296     user
2297     |> cast(%{mascot: url}, [:mascot])
2298     |> validate_required([:mascot])
2299     |> update_and_set_cache()
2300   end
2301
2302   def mastodon_settings_update(user, settings) do
2303     user
2304     |> cast(%{mastofe_settings: settings}, [:mastofe_settings])
2305     |> validate_required([:mastofe_settings])
2306     |> update_and_set_cache()
2307   end
2308
2309   @spec confirmation_changeset(User.t(), keyword()) :: Changeset.t()
2310   def confirmation_changeset(user, set_confirmation: confirmed?) do
2311     params =
2312       if confirmed? do
2313         %{
2314           is_confirmed: true,
2315           confirmation_token: nil
2316         }
2317       else
2318         %{
2319           is_confirmed: false,
2320           confirmation_token: :crypto.strong_rand_bytes(32) |> Base.url_encode64()
2321         }
2322       end
2323
2324     cast(user, params, [:is_confirmed, :confirmation_token])
2325   end
2326
2327   @spec approval_changeset(User.t(), keyword()) :: Changeset.t()
2328   def approval_changeset(user, set_approval: approved?) do
2329     cast(user, %{is_approved: approved?}, [:is_approved])
2330   end
2331
2332   def add_pinnned_activity(user, %Pleroma.Activity{id: id}) do
2333     if id not in user.pinned_activities do
2334       max_pinned_statuses = Config.get([:instance, :max_pinned_statuses], 0)
2335       params = %{pinned_activities: user.pinned_activities ++ [id]}
2336
2337       # if pinned activity was scheduled for deletion, we remove job
2338       if expiration = Pleroma.Workers.PurgeExpiredActivity.get_expiration(id) do
2339         Oban.cancel_job(expiration.id)
2340       end
2341
2342       user
2343       |> cast(params, [:pinned_activities])
2344       |> validate_length(:pinned_activities,
2345         max: max_pinned_statuses,
2346         message: "You have already pinned the maximum number of statuses"
2347       )
2348     else
2349       change(user)
2350     end
2351     |> update_and_set_cache()
2352   end
2353
2354   def remove_pinnned_activity(user, %Pleroma.Activity{id: id, data: data}) do
2355     params = %{pinned_activities: List.delete(user.pinned_activities, id)}
2356
2357     # if pinned activity was scheduled for deletion, we reschedule it for deletion
2358     if data["expires_at"] do
2359       # MRF.ActivityExpirationPolicy used UTC timestamps for expires_at in original implementation
2360       {:ok, expires_at} =
2361         data["expires_at"] |> Pleroma.EctoType.ActivityPub.ObjectValidators.DateTime.cast()
2362
2363       Pleroma.Workers.PurgeExpiredActivity.enqueue(%{
2364         activity_id: id,
2365         expires_at: expires_at
2366       })
2367     end
2368
2369     user
2370     |> cast(params, [:pinned_activities])
2371     |> update_and_set_cache()
2372   end
2373
2374   def update_email_notifications(user, settings) do
2375     email_notifications =
2376       user.email_notifications
2377       |> Map.merge(settings)
2378       |> Map.take(["digest"])
2379
2380     params = %{email_notifications: email_notifications}
2381     fields = [:email_notifications]
2382
2383     user
2384     |> cast(params, fields)
2385     |> validate_required(fields)
2386     |> update_and_set_cache()
2387   end
2388
2389   defp set_domain_blocks(user, domain_blocks) do
2390     params = %{domain_blocks: domain_blocks}
2391
2392     user
2393     |> cast(params, [:domain_blocks])
2394     |> validate_required([:domain_blocks])
2395     |> update_and_set_cache()
2396   end
2397
2398   def block_domain(user, domain_blocked) do
2399     set_domain_blocks(user, Enum.uniq([domain_blocked | user.domain_blocks]))
2400   end
2401
2402   def unblock_domain(user, domain_blocked) do
2403     set_domain_blocks(user, List.delete(user.domain_blocks, domain_blocked))
2404   end
2405
2406   @spec add_to_block(User.t(), User.t()) ::
2407           {:ok, UserRelationship.t()} | {:error, Ecto.Changeset.t()}
2408   defp add_to_block(%User{} = user, %User{} = blocked) do
2409     with {:ok, relationship} <- UserRelationship.create_block(user, blocked) do
2410       @cachex.del(:user_cache, "blocked_users_ap_ids:#{user.ap_id}")
2411       {:ok, relationship}
2412     end
2413   end
2414
2415   @spec add_to_block(User.t(), User.t()) ::
2416           {:ok, UserRelationship.t()} | {:ok, nil} | {:error, Ecto.Changeset.t()}
2417   defp remove_from_block(%User{} = user, %User{} = blocked) do
2418     with {:ok, relationship} <- UserRelationship.delete_block(user, blocked) do
2419       @cachex.del(:user_cache, "blocked_users_ap_ids:#{user.ap_id}")
2420       {:ok, relationship}
2421     end
2422   end
2423
2424   def set_invisible(user, invisible) do
2425     params = %{invisible: invisible}
2426
2427     user
2428     |> cast(params, [:invisible])
2429     |> validate_required([:invisible])
2430     |> update_and_set_cache()
2431   end
2432
2433   def sanitize_html(%User{} = user) do
2434     sanitize_html(user, nil)
2435   end
2436
2437   # User data that mastodon isn't filtering (treated as plaintext):
2438   # - field name
2439   # - display name
2440   def sanitize_html(%User{} = user, filter) do
2441     fields =
2442       Enum.map(user.fields, fn %{"name" => name, "value" => value} ->
2443         %{
2444           "name" => name,
2445           "value" => HTML.filter_tags(value, Pleroma.HTML.Scrubber.LinksOnly)
2446         }
2447       end)
2448
2449     user
2450     |> Map.put(:bio, HTML.filter_tags(user.bio, filter))
2451     |> Map.put(:fields, fields)
2452   end
2453
2454   def get_host(%User{ap_id: ap_id} = _user) do
2455     URI.parse(ap_id).host
2456   end
2457
2458   def update_last_active_at(%__MODULE__{local: true} = user) do
2459     user
2460     |> cast(%{last_active_at: NaiveDateTime.utc_now()}, [:last_active_at])
2461     |> update_and_set_cache()
2462   end
2463
2464   def active_user_count(weeks \\ 4) do
2465     active_after = Timex.shift(NaiveDateTime.utc_now(), weeks: -weeks)
2466
2467     __MODULE__
2468     |> where([u], u.last_active_at >= ^active_after)
2469     |> where([u], u.local == true)
2470     |> Repo.aggregate(:count)
2471   end
2472 end