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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 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, Query}
   9   alias Pleroma.{Repo, User, Object, Web, Activity, Notification}
  10   alias Comeonin.Pbkdf2
  11   alias Pleroma.Formatter
  12   alias Pleroma.Web.CommonAPI.Utils, as: CommonUtils
  13   alias Pleroma.Web.{OStatus, Websub, OAuth}
  14   alias Pleroma.Web.ActivityPub.{Utils, ActivityPub}
  15
  16   require Logger
  17
  18   @type t :: %__MODULE__{}
  19
  20   @email_regex ~r/^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/
  21
  22   @strict_local_nickname_regex ~r/^[a-zA-Z\d]+$/
  23   @extended_local_nickname_regex ~r/^[a-zA-Z\d_-]+$/
  24
  25   schema "users" do
  26     field(:bio, :string)
  27     field(:email, :string)
  28     field(:name, :string)
  29     field(:nickname, :string)
  30     field(:password_hash, :string)
  31     field(:password, :string, virtual: true)
  32     field(:password_confirmation, :string, virtual: true)
  33     field(:following, {:array, :string}, default: [])
  34     field(:ap_id, :string)
  35     field(:avatar, :map)
  36     field(:local, :boolean, default: true)
  37     field(:follower_address, :string)
  38     field(:search_distance, :float, virtual: true)
  39     field(:tags, {:array, :string}, default: [])
  40     field(:last_refreshed_at, :naive_datetime)
  41     has_many(:notifications, Notification)
  42     embeds_one(:info, Pleroma.User.Info)
  43
  44     timestamps()
  45   end
  46
  47   def auth_active?(%User{} = user) do
  48     (user.info && !user.info.confirmation_pending) ||
  49       !Pleroma.Config.get([:instance, :account_activation_required])
  50   end
  51
  52   def remote_or_auth_active?(%User{} = user), do: !user.local || auth_active?(user)
  53
  54   def visible_for?(%User{} = user, for_user \\ nil) do
  55     User.remote_or_auth_active?(user) || (for_user && for_user.id == user.id) ||
  56       User.superuser?(for_user)
  57   end
  58
  59   def superuser?(nil), do: false
  60   def superuser?(%User{} = user), do: user.info && User.Info.superuser?(user.info)
  61
  62   def avatar_url(user) do
  63     case user.avatar do
  64       %{"url" => [%{"href" => href} | _]} -> href
  65       _ -> "#{Web.base_url()}/images/avi.png"
  66     end
  67   end
  68
  69   def banner_url(user) do
  70     case user.info.banner do
  71       %{"url" => [%{"href" => href} | _]} -> href
  72       _ -> "#{Web.base_url()}/images/banner.png"
  73     end
  74   end
  75
  76   def profile_url(%User{info: %{source_data: %{"url" => url}}}), do: url
  77   def profile_url(%User{ap_id: ap_id}), do: ap_id
  78   def profile_url(_), do: nil
  79
  80   def ap_id(%User{nickname: nickname}) do
  81     "#{Web.base_url()}/users/#{nickname}"
  82   end
  83
  84   def ap_followers(%User{} = user) do
  85     "#{ap_id(user)}/followers"
  86   end
  87
  88   def follow_changeset(struct, params \\ %{}) do
  89     struct
  90     |> cast(params, [:following])
  91     |> validate_required([:following])
  92   end
  93
  94   def user_info(%User{} = user) do
  95     oneself = if user.local, do: 1, else: 0
  96
  97     %{
  98       following_count: length(user.following) - oneself,
  99       note_count: user.info.note_count,
 100       follower_count: user.info.follower_count,
 101       locked: user.info.locked,
 102       confirmation_pending: user.info.confirmation_pending,
 103       default_scope: user.info.default_scope
 104     }
 105   end
 106
 107   def remote_user_creation(params) do
 108     params =
 109       params
 110       |> Map.put(:info, params[:info] || %{})
 111
 112     info_cng = User.Info.remote_user_creation(%User.Info{}, params[:info])
 113
 114     changes =
 115       %User{}
 116       |> cast(params, [:bio, :name, :ap_id, :nickname, :avatar])
 117       |> validate_required([:name, :ap_id])
 118       |> unique_constraint(:nickname)
 119       |> validate_format(:nickname, @email_regex)
 120       |> validate_length(:bio, max: 5000)
 121       |> validate_length(:name, max: 100)
 122       |> put_change(:local, false)
 123       |> put_embed(:info, info_cng)
 124
 125     if changes.valid? do
 126       case info_cng.changes[:source_data] do
 127         %{"followers" => followers} ->
 128           changes
 129           |> put_change(:follower_address, followers)
 130
 131         _ ->
 132           followers = User.ap_followers(%User{nickname: changes.changes[:nickname]})
 133
 134           changes
 135           |> put_change(:follower_address, followers)
 136       end
 137     else
 138       changes
 139     end
 140   end
 141
 142   def update_changeset(struct, params \\ %{}) do
 143     struct
 144     |> cast(params, [:bio, :name, :avatar])
 145     |> unique_constraint(:nickname)
 146     |> validate_format(:nickname, local_nickname_regex())
 147     |> validate_length(:bio, max: 5000)
 148     |> validate_length(:name, min: 1, max: 100)
 149   end
 150
 151   def upgrade_changeset(struct, params \\ %{}) do
 152     params =
 153       params
 154       |> Map.put(:last_refreshed_at, NaiveDateTime.utc_now())
 155
 156     info_cng =
 157       struct.info
 158       |> User.Info.user_upgrade(params[:info])
 159
 160     struct
 161     |> cast(params, [:bio, :name, :follower_address, :avatar, :last_refreshed_at])
 162     |> unique_constraint(:nickname)
 163     |> validate_format(:nickname, local_nickname_regex())
 164     |> validate_length(:bio, max: 5000)
 165     |> validate_length(:name, max: 100)
 166     |> put_embed(:info, info_cng)
 167   end
 168
 169   def password_update_changeset(struct, params) do
 170     changeset =
 171       struct
 172       |> cast(params, [:password, :password_confirmation])
 173       |> validate_required([:password, :password_confirmation])
 174       |> validate_confirmation(:password)
 175
 176     OAuth.Token.delete_user_tokens(struct)
 177     OAuth.Authorization.delete_user_authorizations(struct)
 178
 179     if changeset.valid? do
 180       hashed = Pbkdf2.hashpwsalt(changeset.changes[:password])
 181
 182       changeset
 183       |> put_change(:password_hash, hashed)
 184     else
 185       changeset
 186     end
 187   end
 188
 189   def reset_password(user, data) do
 190     update_and_set_cache(password_update_changeset(user, data))
 191   end
 192
 193   def register_changeset(struct, params \\ %{}, opts \\ []) do
 194     confirmation_status =
 195       if opts[:confirmed] || !Pleroma.Config.get([:instance, :account_activation_required]) do
 196         :confirmed
 197       else
 198         :unconfirmed
 199       end
 200
 201     info_change = User.Info.confirmation_changeset(%User.Info{}, confirmation_status)
 202
 203     changeset =
 204       struct
 205       |> cast(params, [:bio, :email, :name, :nickname, :password, :password_confirmation])
 206       |> validate_required([:email, :name, :nickname, :password, :password_confirmation])
 207       |> validate_confirmation(:password)
 208       |> unique_constraint(:email)
 209       |> unique_constraint(:nickname)
 210       |> validate_exclusion(:nickname, Pleroma.Config.get([Pleroma.User, :restricted_nicknames]))
 211       |> validate_format(:nickname, local_nickname_regex())
 212       |> validate_format(:email, @email_regex)
 213       |> validate_length(:bio, max: 1000)
 214       |> validate_length(:name, min: 1, max: 100)
 215       |> put_change(:info, info_change)
 216
 217     if changeset.valid? do
 218       hashed = Pbkdf2.hashpwsalt(changeset.changes[:password])
 219       ap_id = User.ap_id(%User{nickname: changeset.changes[:nickname]})
 220       followers = User.ap_followers(%User{nickname: changeset.changes[:nickname]})
 221
 222       changeset
 223       |> put_change(:password_hash, hashed)
 224       |> put_change(:ap_id, ap_id)
 225       |> put_change(:following, [followers])
 226       |> put_change(:follower_address, followers)
 227     else
 228       changeset
 229     end
 230   end
 231
 232   defp autofollow_users(user) do
 233     candidates = Pleroma.Config.get([:instance, :autofollowed_nicknames])
 234
 235     autofollowed_users =
 236       from(u in User,
 237         where: u.local == true,
 238         where: u.nickname in ^candidates
 239       )
 240       |> Repo.all()
 241
 242     autofollowed_users
 243     |> Enum.reduce({:ok, user}, fn other_user, {:ok, user} ->
 244       follow(user, other_user)
 245     end)
 246   end
 247
 248   @doc "Inserts provided changeset, performs post-registration actions (confirmation email sending etc.)"
 249   def register(%Ecto.Changeset{} = changeset) do
 250     with {:ok, user} <- Repo.insert(changeset),
 251          {:ok, _} <- try_send_confirmation_email(user),
 252          {:ok, user} <- autofollow_users(user) do
 253       {:ok, user}
 254     end
 255   end
 256
 257   def try_send_confirmation_email(%User{} = user) do
 258     if user.info.confirmation_pending &&
 259          Pleroma.Config.get([:instance, :account_activation_required]) do
 260       user
 261       |> Pleroma.UserEmail.account_confirmation_email()
 262       |> Pleroma.Mailer.deliver()
 263     else
 264       {:ok, :noop}
 265     end
 266   end
 267
 268   def needs_update?(%User{local: true}), do: false
 269
 270   def needs_update?(%User{local: false, last_refreshed_at: nil}), do: true
 271
 272   def needs_update?(%User{local: false} = user) do
 273     NaiveDateTime.diff(NaiveDateTime.utc_now(), user.last_refreshed_at) >= 86400
 274   end
 275
 276   def needs_update?(_), do: true
 277
 278   def maybe_direct_follow(%User{} = follower, %User{local: true, info: %{locked: true}}) do
 279     {:ok, follower}
 280   end
 281
 282   def maybe_direct_follow(%User{} = follower, %User{local: true} = followed) do
 283     follow(follower, followed)
 284   end
 285
 286   def maybe_direct_follow(%User{} = follower, %User{} = followed) do
 287     if not User.ap_enabled?(followed) do
 288       follow(follower, followed)
 289     else
 290       {:ok, follower}
 291     end
 292   end
 293
 294   def maybe_follow(%User{} = follower, %User{info: _info} = followed) do
 295     if not following?(follower, followed) do
 296       follow(follower, followed)
 297     else
 298       {:ok, follower}
 299     end
 300   end
 301
 302   def follow(%User{} = follower, %User{info: info} = followed) do
 303     user_config = Application.get_env(:pleroma, :user)
 304     deny_follow_blocked = Keyword.get(user_config, :deny_follow_blocked)
 305
 306     ap_followers = followed.follower_address
 307
 308     cond do
 309       following?(follower, followed) or info.deactivated ->
 310         {:error, "Could not follow user: #{followed.nickname} is already on your list."}
 311
 312       deny_follow_blocked and blocks?(followed, follower) ->
 313         {:error, "Could not follow user: #{followed.nickname} blocked you."}
 314
 315       true ->
 316         if !followed.local && follower.local && !ap_enabled?(followed) do
 317           Websub.subscribe(follower, followed)
 318         end
 319
 320         following =
 321           [ap_followers | follower.following]
 322           |> Enum.uniq()
 323
 324         follower =
 325           follower
 326           |> follow_changeset(%{following: following})
 327           |> update_and_set_cache
 328
 329         {:ok, _} = update_follower_count(followed)
 330
 331         follower
 332     end
 333   end
 334
 335   def unfollow(%User{} = follower, %User{} = followed) do
 336     ap_followers = followed.follower_address
 337
 338     if following?(follower, followed) and follower.ap_id != followed.ap_id do
 339       following =
 340         follower.following
 341         |> List.delete(ap_followers)
 342
 343       {:ok, follower} =
 344         follower
 345         |> follow_changeset(%{following: following})
 346         |> update_and_set_cache
 347
 348       {:ok, followed} = update_follower_count(followed)
 349
 350       {:ok, follower, Utils.fetch_latest_follow(follower, followed)}
 351     else
 352       {:error, "Not subscribed!"}
 353     end
 354   end
 355
 356   @spec following?(User.t(), User.t()) :: boolean
 357   def following?(%User{} = follower, %User{} = followed) do
 358     Enum.member?(follower.following, followed.follower_address)
 359   end
 360
 361   def follow_import(%User{} = follower, followed_identifiers)
 362       when is_list(followed_identifiers) do
 363     Enum.map(
 364       followed_identifiers,
 365       fn followed_identifier ->
 366         with %User{} = followed <- get_or_fetch(followed_identifier),
 367              {:ok, follower} <- maybe_direct_follow(follower, followed),
 368              {:ok, _} <- ActivityPub.follow(follower, followed) do
 369           followed
 370         else
 371           err ->
 372             Logger.debug("follow_import failed for #{followed_identifier} with: #{inspect(err)}")
 373             err
 374         end
 375       end
 376     )
 377   end
 378
 379   def locked?(%User{} = user) do
 380     user.info.locked || false
 381   end
 382
 383   def get_by_ap_id(ap_id) do
 384     Repo.get_by(User, ap_id: ap_id)
 385   end
 386
 387   # This is mostly an SPC migration fix. This guesses the user nickname (by taking the last part of the ap_id and the domain) and tries to get that user
 388   def get_by_guessed_nickname(ap_id) do
 389     domain = URI.parse(ap_id).host
 390     name = List.last(String.split(ap_id, "/"))
 391     nickname = "#{name}@#{domain}"
 392
 393     get_by_nickname(nickname)
 394   end
 395
 396   def update_and_set_cache(changeset) do
 397     with {:ok, user} <- Repo.update(changeset) do
 398       Cachex.put(:user_cache, "ap_id:#{user.ap_id}", user)
 399       Cachex.put(:user_cache, "nickname:#{user.nickname}", user)
 400       Cachex.put(:user_cache, "user_info:#{user.id}", user_info(user))
 401       {:ok, user}
 402     else
 403       e -> e
 404     end
 405   end
 406
 407   def invalidate_cache(user) do
 408     Cachex.del(:user_cache, "ap_id:#{user.ap_id}")
 409     Cachex.del(:user_cache, "nickname:#{user.nickname}")
 410     Cachex.del(:user_cache, "user_info:#{user.id}")
 411   end
 412
 413   def get_cached_by_ap_id(ap_id) do
 414     key = "ap_id:#{ap_id}"
 415     Cachex.fetch!(:user_cache, key, fn _ -> get_by_ap_id(ap_id) end)
 416   end
 417
 418   def get_cached_by_nickname(nickname) do
 419     key = "nickname:#{nickname}"
 420     Cachex.fetch!(:user_cache, key, fn _ -> get_or_fetch_by_nickname(nickname) end)
 421   end
 422
 423   def get_by_nickname(nickname) do
 424     Repo.get_by(User, nickname: nickname) ||
 425       if Regex.match?(~r(@#{Pleroma.Web.Endpoint.host()})i, nickname) do
 426         [local_nickname, _] = String.split(nickname, "@")
 427         Repo.get_by(User, nickname: local_nickname)
 428       end
 429   end
 430
 431   def get_by_nickname_or_email(nickname_or_email) do
 432     case user = Repo.get_by(User, nickname: nickname_or_email) do
 433       %User{} -> user
 434       nil -> Repo.get_by(User, email: nickname_or_email)
 435     end
 436   end
 437
 438   def get_cached_user_info(user) do
 439     key = "user_info:#{user.id}"
 440     Cachex.fetch!(:user_cache, key, fn _ -> user_info(user) end)
 441   end
 442
 443   def fetch_by_nickname(nickname) do
 444     ap_try = ActivityPub.make_user_from_nickname(nickname)
 445
 446     case ap_try do
 447       {:ok, user} -> {:ok, user}
 448       _ -> OStatus.make_user(nickname)
 449     end
 450   end
 451
 452   def get_or_fetch_by_nickname(nickname) do
 453     with %User{} = user <- get_by_nickname(nickname) do
 454       user
 455     else
 456       _e ->
 457         with [_nick, _domain] <- String.split(nickname, "@"),
 458              {:ok, user} <- fetch_by_nickname(nickname) do
 459           user
 460         else
 461           _e -> nil
 462         end
 463     end
 464   end
 465
 466   def get_followers_query(%User{id: id, follower_address: follower_address}) do
 467     from(
 468       u in User,
 469       where: fragment("? <@ ?", ^[follower_address], u.following),
 470       where: u.id != ^id
 471     )
 472   end
 473
 474   def get_followers(user) do
 475     q = get_followers_query(user)
 476
 477     {:ok, Repo.all(q)}
 478   end
 479
 480   def get_friends_query(%User{id: id, following: following}) do
 481     from(
 482       u in User,
 483       where: u.follower_address in ^following,
 484       where: u.id != ^id
 485     )
 486   end
 487
 488   def get_friends(user) do
 489     q = get_friends_query(user)
 490
 491     {:ok, Repo.all(q)}
 492   end
 493
 494   def get_follow_requests_query(%User{} = user) do
 495     from(
 496       a in Activity,
 497       where:
 498         fragment(
 499           "? ->> 'type' = 'Follow'",
 500           a.data
 501         ),
 502       where:
 503         fragment(
 504           "? ->> 'state' = 'pending'",
 505           a.data
 506         ),
 507       where:
 508         fragment(
 509           "? @> ?",
 510           a.data,
 511           ^%{"object" => user.ap_id}
 512         )
 513     )
 514   end
 515
 516   def get_follow_requests(%User{} = user) do
 517     q = get_follow_requests_query(user)
 518     reqs = Repo.all(q)
 519
 520     users =
 521       Enum.map(reqs, fn req -> req.actor end)
 522       |> Enum.uniq()
 523       |> Enum.map(fn ap_id -> get_by_ap_id(ap_id) end)
 524       |> Enum.filter(fn u -> !is_nil(u) end)
 525       |> Enum.filter(fn u -> !following?(u, user) end)
 526
 527     {:ok, users}
 528   end
 529
 530   def increase_note_count(%User{} = user) do
 531     info_cng = User.Info.add_to_note_count(user.info, 1)
 532
 533     cng =
 534       change(user)
 535       |> put_embed(:info, info_cng)
 536
 537     update_and_set_cache(cng)
 538   end
 539
 540   def decrease_note_count(%User{} = user) do
 541     info_cng = User.Info.add_to_note_count(user.info, -1)
 542
 543     cng =
 544       change(user)
 545       |> put_embed(:info, info_cng)
 546
 547     update_and_set_cache(cng)
 548   end
 549
 550   def update_note_count(%User{} = user) do
 551     note_count_query =
 552       from(
 553         a in Object,
 554         where: fragment("?->>'actor' = ? and ?->>'type' = 'Note'", a.data, ^user.ap_id, a.data),
 555         select: count(a.id)
 556       )
 557
 558     note_count = Repo.one(note_count_query)
 559
 560     info_cng = User.Info.set_note_count(user.info, note_count)
 561
 562     cng =
 563       change(user)
 564       |> put_embed(:info, info_cng)
 565
 566     update_and_set_cache(cng)
 567   end
 568
 569   def update_follower_count(%User{} = user) do
 570     follower_count_query =
 571       from(
 572         u in User,
 573         where: ^user.follower_address in u.following,
 574         where: u.id != ^user.id,
 575         select: count(u.id)
 576       )
 577
 578     follower_count = Repo.one(follower_count_query)
 579
 580     info_cng =
 581       user.info
 582       |> User.Info.set_follower_count(follower_count)
 583
 584     cng =
 585       change(user)
 586       |> put_embed(:info, info_cng)
 587
 588     update_and_set_cache(cng)
 589   end
 590
 591   def get_users_from_set_query(ap_ids, false) do
 592     from(
 593       u in User,
 594       where: u.ap_id in ^ap_ids
 595     )
 596   end
 597
 598   def get_users_from_set_query(ap_ids, true) do
 599     query = get_users_from_set_query(ap_ids, false)
 600
 601     from(
 602       u in query,
 603       where: u.local == true
 604     )
 605   end
 606
 607   def get_users_from_set(ap_ids, local_only \\ true) do
 608     get_users_from_set_query(ap_ids, local_only)
 609     |> Repo.all()
 610   end
 611
 612   def get_recipients_from_activity(%Activity{recipients: to}) do
 613     query =
 614       from(
 615         u in User,
 616         where: u.ap_id in ^to,
 617         or_where: fragment("? && ?", u.following, ^to)
 618       )
 619
 620     query = from(u in query, where: u.local == true)
 621
 622     Repo.all(query)
 623   end
 624
 625   def search(query, resolve \\ false) do
 626     # strip the beginning @ off if there is a query
 627     query = String.trim_leading(query, "@")
 628
 629     if resolve do
 630       User.get_or_fetch_by_nickname(query)
 631     end
 632
 633     inner =
 634       from(
 635         u in User,
 636         select_merge: %{
 637           search_distance:
 638             fragment(
 639               "? <-> (? || coalesce(?, ''))",
 640               ^query,
 641               u.nickname,
 642               u.name
 643             )
 644         },
 645         where: not is_nil(u.nickname)
 646       )
 647
 648     q =
 649       from(
 650         s in subquery(inner),
 651         order_by: s.search_distance,
 652         limit: 20
 653       )
 654
 655     Repo.all(q)
 656   end
 657
 658   def blocks_import(%User{} = blocker, blocked_identifiers) when is_list(blocked_identifiers) do
 659     Enum.map(
 660       blocked_identifiers,
 661       fn blocked_identifier ->
 662         with %User{} = blocked <- get_or_fetch(blocked_identifier),
 663              {:ok, blocker} <- block(blocker, blocked),
 664              {:ok, _} <- ActivityPub.block(blocker, blocked) do
 665           blocked
 666         else
 667           err ->
 668             Logger.debug("blocks_import failed for #{blocked_identifier} with: #{inspect(err)}")
 669             err
 670         end
 671       end
 672     )
 673   end
 674
 675   def block(blocker, %User{ap_id: ap_id} = blocked) do
 676     # sever any follow relationships to prevent leaks per activitypub (Pleroma issue #213)
 677     blocker =
 678       if following?(blocker, blocked) do
 679         {:ok, blocker, _} = unfollow(blocker, blocked)
 680         blocker
 681       else
 682         blocker
 683       end
 684
 685     if following?(blocked, blocker) do
 686       unfollow(blocked, blocker)
 687     end
 688
 689     info_cng =
 690       blocker.info
 691       |> User.Info.add_to_block(ap_id)
 692
 693     cng =
 694       change(blocker)
 695       |> put_embed(:info, info_cng)
 696
 697     update_and_set_cache(cng)
 698   end
 699
 700   # helper to handle the block given only an actor's AP id
 701   def block(blocker, %{ap_id: ap_id}) do
 702     block(blocker, User.get_by_ap_id(ap_id))
 703   end
 704
 705   def unblock(blocker, %{ap_id: ap_id}) do
 706     info_cng =
 707       blocker.info
 708       |> User.Info.remove_from_block(ap_id)
 709
 710     cng =
 711       change(blocker)
 712       |> put_embed(:info, info_cng)
 713
 714     update_and_set_cache(cng)
 715   end
 716
 717   def blocks?(user, %{ap_id: ap_id}) do
 718     blocks = user.info.blocks
 719     domain_blocks = user.info.domain_blocks
 720     %{host: host} = URI.parse(ap_id)
 721
 722     Enum.member?(blocks, ap_id) ||
 723       Enum.any?(domain_blocks, fn domain ->
 724         host == domain
 725       end)
 726   end
 727
 728   def blocked_users(user),
 729     do: Repo.all(from(u in User, where: u.ap_id in ^user.info.blocks))
 730
 731   def block_domain(user, domain) do
 732     info_cng =
 733       user.info
 734       |> User.Info.add_to_domain_block(domain)
 735
 736     cng =
 737       change(user)
 738       |> put_embed(:info, info_cng)
 739
 740     update_and_set_cache(cng)
 741   end
 742
 743   def unblock_domain(user, domain) do
 744     info_cng =
 745       user.info
 746       |> User.Info.remove_from_domain_block(domain)
 747
 748     cng =
 749       change(user)
 750       |> put_embed(:info, info_cng)
 751
 752     update_and_set_cache(cng)
 753   end
 754
 755   def local_user_query() do
 756     from(
 757       u in User,
 758       where: u.local == true,
 759       where: not is_nil(u.nickname)
 760     )
 761   end
 762
 763   def moderator_user_query() do
 764     from(
 765       u in User,
 766       where: u.local == true,
 767       where: fragment("?->'is_moderator' @> 'true'", u.info)
 768     )
 769   end
 770
 771   def deactivate(%User{} = user, status \\ true) do
 772     info_cng = User.Info.set_activation_status(user.info, status)
 773
 774     cng =
 775       change(user)
 776       |> put_embed(:info, info_cng)
 777
 778     update_and_set_cache(cng)
 779   end
 780
 781   def delete(%User{} = user) do
 782     {:ok, user} = User.deactivate(user)
 783
 784     # Remove all relationships
 785     {:ok, followers} = User.get_followers(user)
 786
 787     followers
 788     |> Enum.each(fn follower -> User.unfollow(follower, user) end)
 789
 790     {:ok, friends} = User.get_friends(user)
 791
 792     friends
 793     |> Enum.each(fn followed -> User.unfollow(user, followed) end)
 794
 795     query = from(a in Activity, where: a.actor == ^user.ap_id)
 796
 797     Repo.all(query)
 798     |> Enum.each(fn activity ->
 799       case activity.data["type"] do
 800         "Create" ->
 801           ActivityPub.delete(Object.normalize(activity.data["object"]))
 802
 803         # TODO: Do something with likes, follows, repeats.
 804         _ ->
 805           "Doing nothing"
 806       end
 807     end)
 808
 809     {:ok, user}
 810   end
 811
 812   def html_filter_policy(%User{info: %{no_rich_text: true}}) do
 813     Pleroma.HTML.Scrubber.TwitterText
 814   end
 815
 816   @default_scrubbers Pleroma.Config.get([:markup, :scrub_policy])
 817
 818   def html_filter_policy(_), do: @default_scrubbers
 819
 820   def get_or_fetch_by_ap_id(ap_id) do
 821     user = get_by_ap_id(ap_id)
 822
 823     if !is_nil(user) and !User.needs_update?(user) do
 824       user
 825     else
 826       ap_try = ActivityPub.make_user_from_ap_id(ap_id)
 827
 828       case ap_try do
 829         {:ok, user} ->
 830           user
 831
 832         _ ->
 833           case OStatus.make_user(ap_id) do
 834             {:ok, user} -> user
 835             _ -> {:error, "Could not fetch by AP id"}
 836           end
 837       end
 838     end
 839   end
 840
 841   def get_or_create_instance_user do
 842     relay_uri = "#{Pleroma.Web.Endpoint.url()}/relay"
 843
 844     if user = get_by_ap_id(relay_uri) do
 845       user
 846     else
 847       changes =
 848         %User{info: %User.Info{}}
 849         |> cast(%{}, [:ap_id, :nickname, :local])
 850         |> put_change(:ap_id, relay_uri)
 851         |> put_change(:nickname, nil)
 852         |> put_change(:local, true)
 853         |> put_change(:follower_address, relay_uri <> "/followers")
 854
 855       {:ok, user} = Repo.insert(changes)
 856       user
 857     end
 858   end
 859
 860   # AP style
 861   def public_key_from_info(%{
 862         source_data: %{"publicKey" => %{"publicKeyPem" => public_key_pem}}
 863       }) do
 864     key =
 865       public_key_pem
 866       |> :public_key.pem_decode()
 867       |> hd()
 868       |> :public_key.pem_entry_decode()
 869
 870     {:ok, key}
 871   end
 872
 873   # OStatus Magic Key
 874   def public_key_from_info(%{magic_key: magic_key}) do
 875     {:ok, Pleroma.Web.Salmon.decode_key(magic_key)}
 876   end
 877
 878   def get_public_key_for_ap_id(ap_id) do
 879     with %User{} = user <- get_or_fetch_by_ap_id(ap_id),
 880          {:ok, public_key} <- public_key_from_info(user.info) do
 881       {:ok, public_key}
 882     else
 883       _ -> :error
 884     end
 885   end
 886
 887   defp blank?(""), do: nil
 888   defp blank?(n), do: n
 889
 890   def insert_or_update_user(data) do
 891     data =
 892       data
 893       |> Map.put(:name, blank?(data[:name]) || data[:nickname])
 894
 895     cs = User.remote_user_creation(data)
 896
 897     Repo.insert(cs, on_conflict: :replace_all, conflict_target: :nickname)
 898   end
 899
 900   def ap_enabled?(%User{local: true}), do: true
 901   def ap_enabled?(%User{info: info}), do: info.ap_enabled
 902   def ap_enabled?(_), do: false
 903
 904   @doc "Gets or fetch a user by uri or nickname."
 905   @spec get_or_fetch(String.t()) :: User.t()
 906   def get_or_fetch("http" <> _host = uri), do: get_or_fetch_by_ap_id(uri)
 907   def get_or_fetch(nickname), do: get_or_fetch_by_nickname(nickname)
 908
 909   # wait a period of time and return newest version of the User structs
 910   # this is because we have synchronous follow APIs and need to simulate them
 911   # with an async handshake
 912   def wait_and_refresh(_, %User{local: true} = a, %User{local: true} = b) do
 913     with %User{} = a <- Repo.get(User, a.id),
 914          %User{} = b <- Repo.get(User, b.id) do
 915       {:ok, a, b}
 916     else
 917       _e ->
 918         :error
 919     end
 920   end
 921
 922   def wait_and_refresh(timeout, %User{} = a, %User{} = b) do
 923     with :ok <- :timer.sleep(timeout),
 924          %User{} = a <- Repo.get(User, a.id),
 925          %User{} = b <- Repo.get(User, b.id) do
 926       {:ok, a, b}
 927     else
 928       _e ->
 929         :error
 930     end
 931   end
 932
 933   def parse_bio(bio, user \\ %User{info: %{source_data: %{}}})
 934   def parse_bio(nil, _user), do: ""
 935   def parse_bio(bio, _user) when bio == "", do: bio
 936
 937   def parse_bio(bio, user) do
 938     mentions = Formatter.parse_mentions(bio)
 939     tags = Formatter.parse_tags(bio)
 940
 941     emoji =
 942       (user.info.source_data["tag"] || [])
 943       |> Enum.filter(fn %{"type" => t} -> t == "Emoji" end)
 944       |> Enum.map(fn %{"icon" => %{"url" => url}, "name" => name} ->
 945         {String.trim(name, ":"), url}
 946       end)
 947
 948     bio
 949     |> CommonUtils.format_input(mentions, tags, "text/plain")
 950     |> Formatter.emojify(emoji)
 951   end
 952
 953   def tag(user_identifiers, tags) when is_list(user_identifiers) do
 954     Repo.transaction(fn ->
 955       for user_identifier <- user_identifiers, do: tag(user_identifier, tags)
 956     end)
 957   end
 958
 959   def tag(nickname, tags) when is_binary(nickname),
 960     do: tag(User.get_by_nickname(nickname), tags)
 961
 962   def tag(%User{} = user, tags),
 963     do: update_tags(user, Enum.uniq((user.tags || []) ++ normalize_tags(tags)))
 964
 965   def untag(user_identifiers, tags) when is_list(user_identifiers) do
 966     Repo.transaction(fn ->
 967       for user_identifier <- user_identifiers, do: untag(user_identifier, tags)
 968     end)
 969   end
 970
 971   def untag(nickname, tags) when is_binary(nickname),
 972     do: untag(User.get_by_nickname(nickname), tags)
 973
 974   def untag(%User{} = user, tags),
 975     do: update_tags(user, (user.tags || []) -- normalize_tags(tags))
 976
 977   defp update_tags(%User{} = user, new_tags) do
 978     {:ok, updated_user} =
 979       user
 980       |> change(%{tags: new_tags})
 981       |> Repo.update()
 982
 983     updated_user
 984   end
 985
 986   defp normalize_tags(tags) do
 987     [tags]
 988     |> List.flatten()
 989     |> Enum.map(&String.downcase(&1))
 990   end
 991
 992   defp local_nickname_regex() do
 993     if Pleroma.Config.get([:instance, :extended_nickname_format]) do
 994       @extended_local_nickname_regex
 995     else
 996       @strict_local_nickname_regex
 997     end
 998   end
 999 end