debianize-mobilizon/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
alias Mobilizon.{Actors, Addresses, Config, Crypto, Mention, Share}
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alias Mobilizon.Actors.{ActorOpenness, ActorType, ActorVisibility, Follower, Member}
alias Mobilizon.Addresses.Address
alias Mobilizon.Discussions.Comment
alias Mobilizon.Events.{Event, FeedToken}
alias Mobilizon.Medias.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
import Mobilizon.Web.Gettext, only: [dgettext: 2]
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(),
resources_url: String.t(),
posts_url: String.t(),
events_url: String.t(),
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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(),
physical_address: Address.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,
:posts_url,
:events_url,
:todos_url,
:discussions_url,
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:type,
:name,
:domain,
:summary,
:manually_approves_followers,
:last_refreshed_at,
:user_id,
:physical_address_id,
:visibility
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]
@attrs @required_attrs ++ @optional_attrs
@update_required_attrs @required_attrs -- [:url]
@update_optional_attrs [
:name,
:summary,
:manually_approves_followers,
:user_id,
:visibility,
:openness
]
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@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,
:members_url,
:resources_url,
:posts_url,
:todos_url,
:events_url,
:discussions_url,
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:name,
:summary,
:manually_approves_followers,
:visibility,
:openness
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]
@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,
:members_url
]
@group_creation_optional_attrs [
:shared_inbox_url,
:name,
:domain,
:summary,
:visibility,
:openness
]
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@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)
field(:members_url, :string)
field(:resources_url, :string)
field(:posts_url, :string)
field(:events_url, :string)
field(:todos_url, :string)
field(:discussions_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)
belongs_to(:physical_address, Address, on_replace: :nilify)
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.
"""
@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
"#{name} (@#{preferred_username_and_domain(actor)})"
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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(attrs)
|> 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(attrs)
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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(attrs)
|> 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(attrs)
|> unique_username_validator()
|> validate_required(:domain)
|> 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(), map()) :: Ecto.Changeset.t()
defp common_changeset(%Ecto.Changeset{} = changeset, attrs) do
changeset
|> cast_embed(:avatar)
|> cast_embed(:banner)
|> put_address(attrs)
|> 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)
|> build_urls(:Group)
|> common_changeset(params)
|> 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)
|> 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
add_error(
changeset,
:preferred_username,
dgettext("errors", "This 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(:members_url, if(type == :Group, do: build_url(username, :members), else: nil))
|> put_change(
:resources_url,
if(type == :Group, do: build_url(username, :resources), else: nil)
)
|> put_change(:todos_url, if(type == :Group, do: build_url(username, :todos), else: nil))
|> put_change(:posts_url, if(type == :Group, do: build_url(username, :posts), else: nil))
|> put_change(:events_url, if(type == :Group, do: build_url(username, :events), else: nil))
|> put_change(
:discussions_url,
if(type == :Group, do: build_url(username, :discussions), else: nil)
)
|> 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, endpoint, args)
when endpoint in [:page, :resources, :posts, :discussions, :events, :todos] do
endpoint = if endpoint == :page, do: :actor, else: endpoint
Endpoint
|> Routes.page_url(endpoint, preferred_username, args)
|> URI.decode()
end
def build_url(preferred_username, endpoint, args)
when endpoint in [:outbox, :following, :followers, :members] 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 = %{
name: Config.get([:instance, :name], "Mobilizon"),
summary:
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Config.get(
[:instance, :description],
"An internal service actor for this Mobilizon instance"
),
keys: Crypto.generate_rsa_2048_private_key(),
preferred_username: "relay",
domain: nil,
visibility: :public,
type: :Application,
manually_approves_followers: true
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}
%__MODULE__{}
|> Ecto.Changeset.cast(data, @attrs)
|> build_urls()
# Can use sharedinbox directly
|> put_change(:inbox_url, "#{Endpoint.url()}/inbox")
|> unique_username_validator()
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,
manually_approves_followers: true
}
%__MODULE__{}
|> Ecto.Changeset.cast(data, @attrs)
|> build_urls()
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end
# In case the provided addresses is an existing one
@spec put_address(Ecto.Changeset.t(), map) :: Ecto.Changeset.t()
defp put_address(%Ecto.Changeset{} = changeset, %{
physical_address: %{id: id} = _physical_address
})
when not is_nil(id) do
case Addresses.get_address(id) do
%Address{} = address ->
put_assoc(changeset, :physical_address, address)
_ ->
cast_assoc(changeset, :physical_address)
end
end
# In case it's a new address but the origin_id is an existing one
defp put_address(%Ecto.Changeset{} = changeset, %{physical_address: %{origin_id: origin_id}})
when not is_nil(origin_id) do
case Addresses.get_address_by_origin_id(origin_id) do
%Address{} = address ->
put_assoc(changeset, :physical_address, address)
_ ->
cast_assoc(changeset, :physical_address)
end
end
# In case it's a new address without any origin_id (manual)
defp put_address(%Ecto.Changeset{} = changeset, _attrs) do
cast_assoc(changeset, :physical_address)
end
end