293 lines
8.2 KiB
Elixir
293 lines
8.2 KiB
Elixir
import EctoEnum
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defenum(Mobilizon.Actors.ActorTypeEnum, :actor_type, [
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:Person,
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:Application,
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:Group,
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:Organization,
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:Service
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])
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defmodule Mobilizon.Actors.Actor do
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@moduledoc """
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Represents an actor (local and remote actors)
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"""
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use Ecto.Schema
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import Ecto.Changeset
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alias Mobilizon.Actors
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alias Mobilizon.Actors.{Actor, User, Follower, Member}
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alias Mobilizon.Events.Event
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import Ecto.Query
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alias Mobilizon.Repo
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require Logger
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# @type t :: %Actor{description: String.t, id: integer(), inserted_at: DateTime.t, updated_at: DateTime.t, display_name: String.t, domain: String.t, keys: String.t, suspended: boolean(), url: String.t, username: String.t, organized_events: list(), groups: list(), group_request: list(), user: User.t, field: ActorTypeEnum.t}
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schema "actors" do
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field(:url, :string)
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field(:outbox_url, :string)
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field(:inbox_url, :string)
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field(:following_url, :string)
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field(:followers_url, :string)
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field(:shared_inbox_url, :string)
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field(:type, Mobilizon.Actors.ActorTypeEnum, default: :Person)
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field(:name, :string)
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field(:domain, :string)
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field(:summary, :string)
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field(:preferred_username, :string)
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field(:keys, :string)
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field(:manually_approves_followers, :boolean, default: false)
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field(:suspended, :boolean, default: false)
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field(:avatar_url, :string)
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field(:banner_url, :string)
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many_to_many(:followers, Actor, join_through: Follower)
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has_many(:organized_events, Event, foreign_key: :organizer_actor_id)
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many_to_many(:memberships, Actor, join_through: Member)
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belongs_to(:user, User)
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timestamps()
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end
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@doc false
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def changeset(%Actor{} = actor, attrs) do
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actor
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|> Ecto.Changeset.cast(attrs, [
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:url,
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:outbox_url,
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:inbox_url,
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:shared_inbox_url,
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:following_url,
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:followers_url,
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:type,
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:name,
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:domain,
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:summary,
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:preferred_username,
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:keys,
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:manually_approves_followers,
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:suspended,
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:avatar_url,
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:banner_url,
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:user_id
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])
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|> put_change(:url, "#{MobilizonWeb.Endpoint.url()}/@#{attrs["preferred_username"]}")
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|> validate_required([:preferred_username, :keys, :suspended, :url])
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|> unique_constraint(:preferred_username, name: :actors_preferred_username_domain_index)
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end
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def registration_changeset(%Actor{} = actor, attrs) do
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actor
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|> Ecto.Changeset.cast(attrs, [
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:preferred_username,
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:domain,
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:name,
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:summary,
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:keys,
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:keys,
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:suspended,
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:url,
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:type,
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:avatar_url,
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:user_id
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])
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|> unique_constraint(:preferred_username, name: :actors_preferred_username_domain_index)
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|> put_change(:url, "#{MobilizonWeb.Endpoint.url()}/@#{attrs.preferred_username}")
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|> put_change(:inbox_url, "#{MobilizonWeb.Endpoint.url()}/@#{attrs.preferred_username}/inbox")
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|> put_change(
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:outbox_url,
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"#{MobilizonWeb.Endpoint.url()}/@#{attrs.preferred_username}/outbox"
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)
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|> put_change(:shared_inbox_url, "#{MobilizonWeb.Endpoint.url()}/inbox")
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|> validate_required([:preferred_username, :keys, :suspended, :url, :type])
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end
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# TODO : Use me !
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# @email_regex ~r/^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/
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def remote_actor_creation(params) do
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changes =
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%Actor{}
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|> Ecto.Changeset.cast(params, [
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:url,
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:outbox_url,
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:inbox_url,
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:shared_inbox_url,
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:following_url,
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:followers_url,
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:type,
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:name,
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:domain,
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:summary,
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:preferred_username,
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:keys,
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:manually_approves_followers,
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:avatar_url,
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:banner_url
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])
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|> validate_required([
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:url,
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:outbox_url,
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:inbox_url,
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:type,
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:domain,
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:preferred_username,
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:keys
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])
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|> unique_constraint(:preferred_username, name: :actors_preferred_username_domain_index)
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|> validate_length(:summary, max: 5000)
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|> validate_length(:preferred_username, max: 100)
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|> put_change(:local, false)
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Logger.debug("Remote actor creation")
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Logger.debug(inspect(changes))
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changes
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end
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def group_creation(%Actor{} = actor, params) do
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actor
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|> Ecto.Changeset.cast(params, [
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:url,
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:outbox_url,
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:inbox_url,
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:shared_inbox_url,
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:type,
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:name,
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:domain,
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:summary,
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:preferred_username,
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:avatar_url,
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:banner_url
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])
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|> put_change(
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:outbox_url,
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"#{MobilizonWeb.Endpoint.url()}/@#{params["preferred_username"]}/outbox"
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)
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|> put_change(
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:inbox_url,
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"#{MobilizonWeb.Endpoint.url()}/@#{params["preferred_username"]}/inbox"
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)
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|> put_change(:shared_inbox_url, "#{MobilizonWeb.Endpoint.url()}/inbox")
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|> put_change(:url, "#{MobilizonWeb.Endpoint.url()}/@#{params["preferred_username"]}")
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|> put_change(:domain, nil)
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|> put_change(:type, :Group)
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|> validate_required([:url, :outbox_url, :inbox_url, :type, :name, :preferred_username])
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|> validate_length(:summary, max: 5000)
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|> validate_length(:preferred_username, max: 100)
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|> put_change(:local, true)
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end
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@doc """
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Get a public key for a given ActivityPub actor ID (url)
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"""
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@spec get_public_key_for_url(String.t()) :: {:ok, String.t()}
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def get_public_key_for_url(url) do
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with {:ok, %Actor{keys: keys}} <- Actors.get_or_fetch_by_url(url),
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{:ok, public_key} <- prepare_public_key(keys) do
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{:ok, public_key}
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else
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{:error, :pem_decode_error} ->
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Logger.error("Error while decoding PEM")
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{:error, :pem_decode_error}
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_ ->
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Logger.error("Unable to fetch actor, so no keys for you")
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{:error, :actor_fetch_error}
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end
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end
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@doc """
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Convert internal PEM encoded keys to public key format
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"""
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@spec prepare_public_key(String.t()) :: {:ok, tuple()} | {:error, :pem_decode_error}
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def prepare_public_key(public_key_code) do
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with [public_key_entry] <- :public_key.pem_decode(public_key_code) do
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{:ok, :public_key.pem_entry_decode(public_key_entry)}
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else
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_err ->
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{:error, :pem_decode_error}
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end
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end
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@doc """
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Get followers from an actor
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If actor A and C both follow actor B, actor B's followers are A and C
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"""
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def get_followers(%Actor{id: actor_id} = _actor) do
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Repo.all(
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from(
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a in Actor,
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join: f in Follower,
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on: a.id == f.actor_id,
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where: f.target_actor_id == ^actor_id
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)
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)
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end
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@doc """
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Get followings from an actor
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If actor A follows actor B and C, actor A's followings are B and B
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"""
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def get_followings(%Actor{id: actor_id} = _actor) do
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Repo.all(
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from(
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a in Actor,
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join: f in Follower,
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on: a.id == f.target_actor_id,
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where: f.actor_id == ^actor_id
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)
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)
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end
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def get_groups_member_of(%Actor{id: actor_id}) do
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Repo.all(
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from(
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a in Actor,
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join: m in Member,
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on: a.id == m.parent_id,
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where: m.actor_id == ^actor_id
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)
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)
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end
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def get_members_for_group(%Actor{id: actor_id}) do
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Repo.all(
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from(
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a in Actor,
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join: m in Member,
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on: a.id == m.actor_id,
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where: m.parent_id == ^actor_id
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)
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)
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end
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def follow(%Actor{} = follower, %Actor{} = followed, approved \\ true) do
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with {:suspended, false} <- {:suspended, followed.suspended},
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# Check if followed has blocked follower
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{:already_following, false} <- {:already_following, following?(follower, followed)} do
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do_follow(follower, followed, approved)
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else
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{:already_following, _} ->
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{:error,
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"Could not follow actor: you are already following #{followed.preferred_username}"}
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{:suspended, _} ->
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{:error, "Could not follow actor: #{followed.preferred_username} has been suspended"}
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end
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end
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defp do_follow(%Actor{} = follower, %Actor{} = followed, approved) do
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Actors.create_follower(%{
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"actor_id" => follower.id,
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"target_actor_id" => followed.id,
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"approved" => approved
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})
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end
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def following?(%Actor{} = follower, %Actor{followers: followers}) do
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Enum.member?(followers, follower)
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end
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end
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