mobilizon.chapril.org-mobil.../lib/mobilizon/actors/actor.ex

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defmodule Mobilizon.Actors.Actor do
@moduledoc """
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Represents an actor (local and remote).
"""
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use Ecto.Schema
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import Ecto.Changeset
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alias Mobilizon.{Actors, Config, Crypto, Mention, Share}
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alias Mobilizon.Actors.{ActorOpenness, ActorType, ActorVisibility, Follower, Member}
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alias Mobilizon.Events.{Comment, Event, FeedToken}
alias Mobilizon.Media.File
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alias Mobilizon.Reports.{Note, Report}
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alias Mobilizon.Users.User
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alias Mobilizon.Web.Endpoint
alias Mobilizon.Web.Router.Helpers, as: Routes
require Logger
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@type t :: %__MODULE__{
url: String.t(),
outbox_url: String.t(),
inbox_url: String.t(),
following_url: String.t(),
followers_url: String.t(),
shared_inbox_url: String.t(),
type: ActorType.t(),
name: String.t(),
domain: String.t(),
summary: String.t(),
preferred_username: String.t(),
keys: String.t(),
manually_approves_followers: boolean,
openness: ActorOpenness.t(),
visibility: ActorVisibility.t(),
suspended: boolean,
avatar: File.t(),
banner: File.t(),
user: User.t(),
followers: [Follower.t()],
followings: [Follower.t()],
organized_events: [Event.t()],
comments: [Comment.t()],
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feed_tokens: [FeedToken.t()],
created_reports: [Report.t()],
subject_reports: [Report.t()],
report_notes: [Note.t()],
mentions: [Mention.t()],
shares: [Share.t()],
owner_shares: [Share.t()],
memberships: [t],
last_refreshed_at: DateTime.t()
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}
@required_attrs [:preferred_username, :keys, :suspended, :url]
@optional_attrs [
:outbox_url,
:inbox_url,
:shared_inbox_url,
:following_url,
:followers_url,
:type,
:name,
:domain,
:summary,
:manually_approves_followers,
:last_refreshed_at,
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:user_id
]
@attrs @required_attrs ++ @optional_attrs
@update_required_attrs @required_attrs -- [:url]
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@update_optional_attrs [:name, :summary, :manually_approves_followers, :user_id]
@update_attrs @update_required_attrs ++ @update_optional_attrs
@registration_required_attrs [:preferred_username, :keys, :suspended, :url, :type]
@registration_optional_attrs [:domain, :name, :summary, :user_id]
@registration_attrs @registration_required_attrs ++ @registration_optional_attrs
@remote_actor_creation_required_attrs [
:url,
:inbox_url,
:type,
:domain,
:preferred_username,
:keys
]
@remote_actor_creation_optional_attrs [
:outbox_url,
:shared_inbox_url,
:following_url,
:followers_url,
:name,
:summary,
:manually_approves_followers
]
@remote_actor_creation_attrs @remote_actor_creation_required_attrs ++
@remote_actor_creation_optional_attrs
@group_creation_required_attrs [:url, :outbox_url, :inbox_url, :type, :preferred_username]
@group_creation_optional_attrs [:shared_inbox_url, :name, :domain, :summary]
@group_creation_attrs @group_creation_required_attrs ++ @group_creation_optional_attrs
schema "actors" do
field(:url, :string)
field(:outbox_url, :string)
field(:inbox_url, :string)
field(:following_url, :string)
field(:followers_url, :string)
field(:shared_inbox_url, :string)
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field(:type, ActorType, default: :Person)
field(:name, :string)
field(:domain, :string, default: nil)
field(:summary, :string)
field(:preferred_username, :string)
field(:keys, :string)
field(:manually_approves_followers, :boolean, default: false)
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field(:openness, ActorOpenness, default: :moderated)
field(:visibility, ActorVisibility, default: :private)
field(:suspended, :boolean, default: false)
field(:last_refreshed_at, :utc_datetime)
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embeds_one(:avatar, File, on_replace: :update)
embeds_one(:banner, File, on_replace: :update)
belongs_to(:user, User)
has_many(:followers, Follower, foreign_key: :target_actor_id)
has_many(:followings, Follower, foreign_key: :actor_id)
has_many(:organized_events, Event, foreign_key: :organizer_actor_id)
has_many(:comments, Comment, foreign_key: :actor_id)
has_many(:feed_tokens, FeedToken, foreign_key: :actor_id)
has_many(:created_reports, Report, foreign_key: :reporter_id)
has_many(:subject_reports, Report, foreign_key: :reported_id)
has_many(:report_notes, Note, foreign_key: :moderator_id)
has_many(:mentions, Mention)
has_many(:shares, Share, foreign_key: :actor_id)
has_many(:owner_shares, Share, foreign_key: :owner_actor_id)
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many_to_many(:memberships, __MODULE__, join_through: Member)
timestamps()
end
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@doc """
Checks whether actor visibility is public.
"""
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@spec is_public_visibility(t) :: boolean
def is_public_visibility(%__MODULE__{visibility: visibility}) do
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visibility in [:public, :unlisted]
end
@doc """
Returns the display name if available, or the preferred username
(with the eventual @domain suffix if it's a distant actor).
"""
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@spec display_name(t) :: String.t()
def display_name(%__MODULE__{name: name} = actor) when name in [nil, ""] do
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preferred_username_and_domain(actor)
end
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def display_name(%__MODULE__{name: name}), do: name
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@doc """
Returns display name and username.
"""
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@spec display_name_and_username(t) :: String.t()
def display_name_and_username(%__MODULE__{name: name} = actor) when name in [nil, ""] do
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preferred_username_and_domain(actor)
end
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def display_name_and_username(%__MODULE__{name: name} = actor) do
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"#{name} (#{preferred_username_and_domain(actor)})"
end
@doc """
Returns the preferred username with the eventual @domain suffix if it's
a distant actor.
"""
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@spec preferred_username_and_domain(t) :: String.t()
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def preferred_username_and_domain(%__MODULE__{
preferred_username: preferred_username,
domain: nil
}) do
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preferred_username
end
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def preferred_username_and_domain(%__MODULE__{
preferred_username: preferred_username,
domain: domain
}) do
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"#{preferred_username}@#{domain}"
end
@doc false
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@spec changeset(t, map) :: Ecto.Changeset.t()
def changeset(%__MODULE__{} = actor, attrs) do
actor
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|> cast(attrs, @attrs)
|> build_urls()
|> common_changeset()
|> unique_username_validator()
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|> validate_required(@required_attrs)
end
@doc false
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@spec update_changeset(t, map) :: Ecto.Changeset.t()
def update_changeset(%__MODULE__{} = actor, attrs) do
actor
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|> cast(attrs, @update_attrs)
|> common_changeset()
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|> validate_required(@update_required_attrs)
end
@doc false
@spec delete_changeset(t) :: Ecto.Changeset.t()
def delete_changeset(%__MODULE__{} = actor) do
actor
|> change()
|> put_change(:name, nil)
|> put_change(:summary, nil)
|> put_change(:suspended, true)
|> put_change(:avatar, nil)
|> put_change(:banner, nil)
|> put_change(:user_id, nil)
end
@doc """
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Changeset for person registration.
"""
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@spec registration_changeset(t, map) :: Ecto.Changeset.t()
def registration_changeset(%__MODULE__{} = actor, attrs) do
actor
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|> cast(attrs, @registration_attrs)
|> build_urls()
|> common_changeset()
|> unique_username_validator()
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|> validate_required(@registration_required_attrs)
end
@doc """
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Changeset for remote actor creation.
"""
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@spec remote_actor_creation_changeset(map) :: Ecto.Changeset.t()
def remote_actor_creation_changeset(attrs) do
changeset =
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%__MODULE__{}
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|> cast(attrs, @remote_actor_creation_attrs)
|> validate_required(@remote_actor_creation_required_attrs)
|> common_changeset()
|> unique_username_validator()
|> validate_length(:summary, max: 5000)
|> validate_length(:preferred_username, max: 100)
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Logger.debug("Remote actor creation: #{inspect(changeset)}")
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changeset
end
@spec common_changeset(Ecto.Changeset.t()) :: Ecto.Changeset.t()
defp common_changeset(%Ecto.Changeset{} = changeset) do
changeset
|> cast_embed(:avatar)
|> cast_embed(:banner)
|> unique_constraint(:url, name: :actors_url_index)
|> unique_constraint(:preferred_username, name: :actors_preferred_username_domain_type_index)
|> validate_format(:preferred_username, ~r/[a-z0-9_]+/)
|> put_change(:last_refreshed_at, DateTime.utc_now() |> DateTime.truncate(:second))
end
@doc """
Changeset for group creation
"""
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@spec group_creation_changeset(t, map) :: Ecto.Changeset.t()
def group_creation_changeset(%__MODULE__{} = actor, params) do
actor
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|> cast(params, @group_creation_attrs)
|> cast_embed(:avatar)
|> cast_embed(:banner)
|> build_urls(:Group)
|> put_change(:domain, nil)
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|> put_change(:keys, Crypto.generate_rsa_2048_private_key())
|> put_change(:type, :Group)
|> unique_username_validator()
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|> validate_required(@group_creation_required_attrs)
|> unique_constraint(:preferred_username,
name: :actors_preferred_username_domain_type_index
)
|> unique_constraint(:url, name: :actors_url_index)
|> validate_length(:summary, max: 5000)
|> validate_length(:preferred_username, max: 100)
end
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# Needed because following constraint can't work for domain null values (local)
@spec unique_username_validator(Ecto.Changeset.t()) :: Ecto.Changeset.t()
defp unique_username_validator(
%Ecto.Changeset{changes: %{preferred_username: username} = changes} = changeset
) do
with nil <- Map.get(changes, :domain, nil),
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%__MODULE__{preferred_username: _} <- Actors.get_local_actor_by_name(username) do
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add_error(changeset, :preferred_username, "Username is already taken")
else
_ -> changeset
end
end
# When we don't even have any preferred_username, don't even try validating preferred_username
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defp unique_username_validator(changeset), do: changeset
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@spec build_urls(Ecto.Changeset.t(), ActorType.t()) :: Ecto.Changeset.t()
defp build_urls(changeset, type \\ :Person)
defp build_urls(%Ecto.Changeset{changes: %{preferred_username: username}} = changeset, _type) do
changeset
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|> put_change(:outbox_url, build_url(username, :outbox))
|> put_change(:followers_url, build_url(username, :followers))
|> put_change(:following_url, build_url(username, :following))
|> put_change(:inbox_url, build_url(username, :inbox))
|> put_change(:shared_inbox_url, "#{Endpoint.url()}/inbox")
|> put_change(:url, build_url(username, :page))
end
defp build_urls(%Ecto.Changeset{} = changeset, _type), do: changeset
@doc """
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Builds an AP URL for an actor.
"""
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@spec build_url(String.t(), atom, keyword) :: String.t()
def build_url(preferred_username, endpoint, args \\ [])
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def build_url(username, :inbox, _args), do: "#{build_url(username, :page)}/inbox"
# Relay has a special URI
def build_url("relay", :page, _args),
do: Endpoint |> Routes.activity_pub_url(:relay) |> URI.decode()
def build_url(preferred_username, :page, args) do
Endpoint
|> Routes.page_url(:actor, preferred_username, args)
|> URI.decode()
end
def build_url(preferred_username, endpoint, args)
when endpoint in [:outbox, :following, :followers] do
Endpoint
|> Routes.activity_pub_url(endpoint, preferred_username, args)
|> URI.decode()
end
@spec build_relay_creation_attrs :: Ecto.Changeset.t()
def build_relay_creation_attrs do
data = %{
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"name" => Config.get([:instance, :name], "Mobilizon"),
"summary" =>
Config.get(
[:instance, :description],
"An internal service actor for this Mobilizon instance"
),
"keys" => Crypto.generate_rsa_2048_private_key(),
"preferred_username" => "relay",
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"domain" => nil,
"type" => :Application
}
%__MODULE__{}
|> Ecto.Changeset.cast(data, @attrs)
|> build_urls()
|> put_change(:inbox_url, "#{Endpoint.url()}/inbox")
end
@spec build_anonymous_actor_creation_attrs :: Ecto.Changeset.t()
def build_anonymous_actor_creation_attrs do
data = %{
"name" => "Mobilizon Anonymous Actor",
"summary" => "A fake person for anonymous participations",
"keys" => Crypto.generate_rsa_2048_private_key(),
"preferred_username" => "anonymous",
"domain" => nil,
"type" => :Person
}
%__MODULE__{}
|> Ecto.Changeset.cast(data, @attrs)
|> build_urls()
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end
end