# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.ActivityPub do
alias Akkoma.Collections
alias Pleroma.Activity
alias Pleroma.Activity.Ir.Topics
alias Pleroma.Config
alias Pleroma.Constants
alias Pleroma.Conversation
alias Pleroma.Conversation.Participation
alias Pleroma.Filter
alias Pleroma.Hashtag
alias Pleroma.Maps
alias Pleroma.Notification
alias Pleroma.Object
alias Pleroma.Object.Containment
alias Pleroma.Object.Fetcher
alias Pleroma.Pagination
alias Pleroma.Repo
alias Pleroma.Upload
alias Pleroma.User
alias Pleroma.Web.ActivityPub.MRF
alias Pleroma.Web.ActivityPub.Transmogrifier
alias Pleroma.Web.Streamer
alias Pleroma.Web.WebFinger
alias Pleroma.Workers.BackgroundWorker
alias Pleroma.Workers.PollWorker
import Ecto.Query
import Pleroma.Web.ActivityPub.Utils
import Pleroma.Web.ActivityPub.Visibility
require Logger
require Pleroma.Constants
@behaviour Pleroma.Web.ActivityPub.ActivityPub.Persisting
@behaviour Pleroma.Web.ActivityPub.ActivityPub.Streaming
defp get_recipients(%{"type" => "Create"} = data) do
to = Map.get(data, "to", [])
cc = Map.get(data, "cc", [])
bcc = Map.get(data, "bcc", [])
actor = Map.get(data, "actor", [])
recipients = [to, cc, bcc, [actor]] |> Enum.concat() |> Enum.uniq()
{recipients, to, cc}
end
defp get_recipients(data) do
to = Map.get(data, "to", [])
cc = Map.get(data, "cc", [])
bcc = Map.get(data, "bcc", [])
recipients = Enum.concat([to, cc, bcc])
{recipients, to, cc}
end
defp check_actor_can_insert(%{"type" => "Delete"}), do: true
defp check_actor_can_insert(%{"type" => "Undo"}), do: true
defp check_actor_can_insert(%{"actor" => actor}) when is_binary(actor) do
case User.get_cached_by_ap_id(actor) do
%User{is_active: true} -> true
_ -> false
end
end
defp check_actor_can_insert(_), do: true
defp check_remote_limit(%{"object" => %{"content" => content}}) when not is_nil(content) do
limit = Config.get([:instance, :remote_limit])
String.length(content) <= limit
end
defp check_remote_limit(_), do: true
def increase_note_count_if_public(actor, object) do
if is_public?(object), do: User.increase_note_count(actor), else: {:ok, actor}
end
def decrease_note_count_if_public(actor, object) do
if is_public?(object), do: User.decrease_note_count(actor), else: {:ok, actor}
end
def update_last_status_at_if_public(actor, object) do
if is_public?(object), do: User.update_last_status_at(actor), else: {:ok, actor}
end
defp increase_replies_count_if_reply(%{
"object" => %{"inReplyTo" => reply_ap_id} = object,
"type" => "Create"
}) do
if is_public?(object) do
Object.increase_replies_count(reply_ap_id)
end
end
defp increase_replies_count_if_reply(_create_data), do: :noop
@object_types ~w[Question Answer Audio Video Event Article Note Page]
@impl true
def persist(%{"type" => type} = object, meta) when type in @object_types do
with {:ok, object} <- Object.create(object) do
{:ok, object, meta}
end
end
@impl true
def persist(object, meta) do
with local <- Keyword.fetch!(meta, :local),
{recipients, _, _} <- get_recipients(object),
{:ok, activity} <-
Repo.insert(%Activity{
data: object,
local: local,
recipients: recipients,
actor: object["actor"]
}),
# TODO: add tests for expired activities, when Note type will be supported in new pipeline
{:ok, _} <- maybe_create_activity_expiration(activity) do
{:ok, activity, meta}
end
end
@spec insert(map(), boolean(), boolean(), boolean()) :: {:ok, Activity.t()} | {:error, any()}
def insert(map, local \\ true, fake \\ false, bypass_actor_check \\ false) when is_map(map) do
with nil <- Activity.normalize(map),
map <- lazy_put_activity_defaults(map, fake),
{_, true} <- {:actor_check, bypass_actor_check || check_actor_can_insert(map)},
{_, true} <- {:remote_limit_pass, check_remote_limit(map)},
{:ok, map} <- MRF.filter(map),
{recipients, _, _} = get_recipients(map),
{:fake, false, map, recipients} <- {:fake, fake, map, recipients},
{:containment, :ok} <- {:containment, Containment.contain_child(map)},
{:ok, map, object} <- insert_full_object(map),
{:ok, activity} <- insert_activity_with_expiration(map, local, recipients) do
# Splice in the child object if we have one.
activity = Maps.put_if_present(activity, :object, object)
ConcurrentLimiter.limit(Pleroma.Web.RichMedia.Helpers, fn ->
Task.start(fn -> Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity) end)
end)
# Add local posts to search index
if local, do: Pleroma.Search.add_to_index(activity)
{:ok, activity}
else
%Activity{} = activity ->
{:ok, activity}
{:actor_check, _} ->
{:error, false}
{:containment, _} = error ->
error
{:error, _} = error ->
error
{:fake, true, map, recipients} ->
activity = %Activity{
data: map,
local: local,
actor: map["actor"],
recipients: recipients,
id: "pleroma:fakeid"
}
Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)
{:ok, activity}
{:remote_limit_pass, _} ->
{:error, :remote_limit}
{:reject, _} = e ->
{:error, e}
end
end
defp insert_activity_with_expiration(data, local, recipients) do
struct = %Activity{
data: data,
local: local,
actor: data["actor"],
recipients: recipients
}
with {:ok, activity} <- Repo.insert(struct) do
maybe_create_activity_expiration(activity)
end
end
def notify_and_stream(activity) do
Notification.create_notifications(activity)
conversation = create_or_bump_conversation(activity, activity.actor)
participations = get_participations(conversation)
stream_out(activity)
stream_out_participations(participations)
end
defp maybe_create_activity_expiration(
%{data: %{"expires_at" => %DateTime{} = expires_at}} = activity
) do
with {:ok, _job} <-
Pleroma.Workers.PurgeExpiredActivity.enqueue(%{
activity_id: activity.id,
expires_at: expires_at
}) do
{:ok, activity}
end
end
defp maybe_create_activity_expiration(activity), do: {:ok, activity}
defp create_or_bump_conversation(activity, actor) do
with {:ok, conversation} <- Conversation.create_or_bump_for(activity),
%User{} = user <- User.get_cached_by_ap_id(actor) do
Participation.mark_as_read(user, conversation)
{:ok, conversation}
end
end
defp get_participations({:ok, conversation}) do
conversation
|> Repo.preload(:participations, force: true)
|> Map.get(:participations)
end
defp get_participations(_), do: []
def stream_out_participations(participations) do
participations =
participations
|> Repo.preload(:user)
Streamer.stream("participation", participations)
end
@impl true
def stream_out_participations(%Object{data: %{"context" => context}}, user) do
with %Conversation{} = conversation <- Conversation.get_for_ap_id(context) do
conversation = Repo.preload(conversation, :participations)
last_activity_id =
fetch_latest_direct_activity_id_for_context(conversation.ap_id, %{
user: user,
blocking_user: user
})
if last_activity_id do
stream_out_participations(conversation.participations)
end
end
end
@impl true
def stream_out_participations(_, _), do: :noop
@impl true
def stream_out(%Activity{data: %{"type" => data_type}} = activity)
when data_type in ["Create", "Announce", "Delete"] do
activity
|> Topics.get_activity_topics()
|> Streamer.stream(activity)
end
@impl true
def stream_out(_activity) do
:noop
end
@spec create(map(), boolean()) :: {:ok, Activity.t()} | {:error, any()}
def create(params, fake \\ false) do
with {:ok, result} <- Repo.transaction(fn -> do_create(params, fake) end) do
result
end
end
defp do_create(%{to: to, actor: actor, context: context, object: object} = params, fake) do
additional = params[:additional] || %{}
# only accept false as false value
local = !(params[:local] == false)
published = params[:published]
quick_insert? = Config.get([:env]) == :benchmark
create_data =
make_create_data(
%{to: to, actor: actor, published: published, context: context, object: object},
additional
)
with {:ok, activity} <- insert(create_data, local, fake),
{:fake, false, activity} <- {:fake, fake, activity},
_ <- increase_replies_count_if_reply(create_data),
{:quick_insert, false, activity} <- {:quick_insert, quick_insert?, activity},
{:ok, _actor} <- increase_note_count_if_public(actor, activity),
{:ok, _actor} <- update_last_status_at_if_public(actor, activity),
_ <- notify_and_stream(activity),
:ok <- maybe_schedule_poll_notifications(activity),
:ok <- maybe_federate(activity) do
{:ok, activity}
else
{:quick_insert, true, activity} ->
{:ok, activity}
{:fake, true, activity} ->
{:ok, activity}
{:error, message} ->
Repo.rollback(message)
end
end
defp maybe_schedule_poll_notifications(activity) do
PollWorker.schedule_poll_end(activity)
:ok
end
@spec unfollow(User.t(), User.t(), String.t() | nil, boolean()) ::
{:ok, Activity.t()} | nil | {:error, any()}
def unfollow(follower, followed, activity_id \\ nil, local \\ true) do
with {:ok, result} <-
Repo.transaction(fn -> do_unfollow(follower, followed, activity_id, local) end) do
result
end
end
defp do_unfollow(follower, followed, activity_id, local)
defp do_unfollow(follower, followed, activity_id, local) when local == true do
with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
{:ok, activity} <- insert(unfollow_data, local),
{:ok, _activity} <- Repo.delete(follow_activity),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity}
else
nil -> nil
{:error, error} -> Repo.rollback(error)
end
end
defp do_unfollow(follower, followed, activity_id, false) do
# On a remote unfollow, _remove_ their activity from the database, since some software (MISSKEEEEY)
# uses deterministic ids for follows.
with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
{:ok, _activity} <- Repo.delete(follow_activity),
unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
unfollow_activity <- make_unfollow_activity(unfollow_data, false),
_ <- notify_and_stream(unfollow_activity) do
{:ok, unfollow_activity}
else
nil -> nil
{:error, error} -> Repo.rollback(error)
end
end
defp make_unfollow_activity(data, local) do
{recipients, _, _} = get_recipients(data)
%Activity{
data: data,
local: local,
actor: data["actor"],
recipients: recipients
}
end
@spec flag(map()) :: {:ok, Activity.t()} | {:error, any()}
def flag(params) do
with {:ok, result} <- Repo.transaction(fn -> do_flag(params) end) do
result
end
end
defp do_flag(
%{
actor: actor,
context: _context,
account: account,
statuses: statuses,
content: content
} = params
) do
# only accept false as false value
local = !(params[:local] == false)
forward = !(params[:forward] == false)
additional = params[:additional] || %{}
additional =
if forward do
Map.merge(additional, %{"to" => [], "cc" => [account.ap_id]})
else
Map.merge(additional, %{"to" => [], "cc" => []})
end
with flag_data <- make_flag_data(params, additional),
{:ok, activity} <- insert(flag_data, local),
{:ok, stripped_activity} <- strip_report_status_data(activity),
_ <- notify_and_stream(activity),
:ok <-
maybe_federate(stripped_activity) do
User.all_superusers()
|> Enum.filter(fn user -> user.ap_id != actor end)
|> Enum.filter(fn user -> not is_nil(user.email) end)
|> Enum.each(fn superuser ->
superuser
|> Pleroma.Emails.AdminEmail.report(actor, account, statuses, content)
|> Pleroma.Emails.Mailer.deliver_async()
end)
{:ok, activity}
else
{:error, error} -> Repo.rollback(error)
end
end
@spec move(User.t(), User.t(), boolean()) :: {:ok, Activity.t()} | {:error, any()}
def move(%User{} = origin, %User{} = target, local \\ true) do
params = %{
"type" => "Move",
"actor" => origin.ap_id,
"object" => origin.ap_id,
"target" => target.ap_id,
"to" => [origin.follower_address]
}
with true <- origin.ap_id in target.also_known_as,
{:ok, activity} <- insert(params, local),
_ <- notify_and_stream(activity) do
maybe_federate(activity)
BackgroundWorker.enqueue("move_following", %{
"origin_id" => origin.id,
"target_id" => target.id
})
{:ok, activity}
else
false -> {:error, "Target account must have the origin in `alsoKnownAs`"}
err -> err
end
end
def fetch_activities_for_context_query(context, opts) do
public = [Constants.as_public()]
recipients =
if opts[:user],
do: [opts[:user].ap_id | User.following(opts[:user])] ++ public,
else: public
from(activity in Activity)
|> maybe_preload_objects(opts)
|> maybe_preload_bookmarks(opts)
|> maybe_set_thread_muted_field(opts)
|> restrict_blocked(opts)
|> restrict_blockers_visibility(opts)
|> restrict_recipients(recipients, opts[:user])
|> restrict_filtered(opts)
|> where(
[activity],
fragment(
"?->>'type' = ? and ?->>'context' = ?",
activity.data,
"Create",
activity.data,
^context
)
)
|> exclude_poll_votes(opts)
|> exclude_id(opts)
|> order_by([activity], desc: activity.id)
end
@spec fetch_activities_for_context(String.t(), keyword() | map()) :: [Activity.t()]
def fetch_activities_for_context(context, opts \\ %{}) do
context
|> fetch_activities_for_context_query(opts)
|> Repo.all()
end
@spec fetch_latest_direct_activity_id_for_context(String.t(), keyword() | map()) ::
FlakeId.Ecto.CompatType.t() | nil
def fetch_latest_direct_activity_id_for_context(context, opts \\ %{}) do
context
|> fetch_activities_for_context_query(Map.merge(%{skip_preload: true}, opts))
|> restrict_visibility(%{visibility: "direct"})
|> limit(1)
|> select([a], a.id)
|> Repo.one()
end
defp fetch_paginated_optimized(query, opts, pagination) do
# Note: tag-filtering funcs may apply "ORDER BY objects.id DESC",
# and extra sorting on "activities.id DESC NULLS LAST" would worse the query plan
opts = Map.put(opts, :skip_extra_order, true)
Pagination.fetch_paginated(query, opts, pagination)
end
def fetch_activities(recipients, opts \\ %{}, pagination \\ :keyset) do
list_memberships = Pleroma.List.memberships(opts[:user])
fetch_activities_query(recipients ++ list_memberships, opts)
|> fetch_paginated_optimized(opts, pagination)
|> Enum.reverse()
|> maybe_update_cc(list_memberships, opts[:user])
end
@spec fetch_public_or_unlisted_activities(map(), Pagination.type()) :: [Activity.t()]
def fetch_public_or_unlisted_activities(opts \\ %{}, pagination \\ :keyset) do
includes_local_public = Map.get(opts, :includes_local_public, false)
opts = Map.delete(opts, :user)
intended_recipients =
if includes_local_public do
[Constants.as_public(), as_local_public()]
else
[Constants.as_public()]
end
intended_recipients
|> fetch_activities_query(opts)
|> restrict_unlisted(opts)
|> fetch_paginated_optimized(opts, pagination)
end
@spec fetch_public_activities(map(), Pagination.type()) :: [Activity.t()]
def fetch_public_activities(opts \\ %{}, pagination \\ :keyset) do
opts
|> Map.put(:restrict_unlisted, true)
|> fetch_public_or_unlisted_activities(pagination)
end
@valid_visibilities ~w[direct unlisted public private]
defp restrict_visibility(query, %{visibility: visibility})
when is_list(visibility) do
if Enum.all?(visibility, &(&1 in @valid_visibilities)) do
from(
a in query,
where:
fragment(
"activity_visibility(?, ?, ?) = ANY (?)",
a.actor,
a.recipients,
a.data,
^visibility
)
)
else
Logger.error("Could not restrict visibility to #{visibility}")
end
end
defp restrict_visibility(query, %{visibility: visibility})
when visibility in @valid_visibilities do
from(
a in query,
where:
fragment("activity_visibility(?, ?, ?) = ?", a.actor, a.recipients, a.data, ^visibility)
)
end
defp restrict_visibility(_query, %{visibility: visibility})
when visibility not in @valid_visibilities do
Logger.error("Could not restrict visibility to #{visibility}")
end
defp restrict_visibility(query, _visibility), do: query
defp exclude_visibility(query, %{exclude_visibilities: visibility})
when is_list(visibility) do
if Enum.all?(visibility, &(&1 in @valid_visibilities)) do
from(
a in query,
where:
not fragment(
"activity_visibility(?, ?, ?) = ANY (?)",
a.actor,
a.recipients,
a.data,
^visibility
)
)
else
Logger.error("Could not exclude visibility to #{visibility}")
query
end
end
defp exclude_visibility(query, %{exclude_visibilities: visibility})
when visibility in @valid_visibilities do
from(
a in query,
where:
not fragment(
"activity_visibility(?, ?, ?) = ?",
a.actor,
a.recipients,
a.data,
^visibility
)
)
end
defp exclude_visibility(query, %{exclude_visibilities: visibility})
when visibility not in [nil | @valid_visibilities] do
Logger.error("Could not exclude visibility to #{visibility}")
query
end
defp exclude_visibility(query, _visibility), do: query
defp restrict_thread_visibility(query, _, %{skip_thread_containment: true} = _),
do: query
defp restrict_thread_visibility(query, %{user: %User{skip_thread_containment: true}}, _),
do: query
defp restrict_thread_visibility(query, %{user: %User{ap_id: ap_id}}, _) do
local_public = as_local_public()
from(
a in query,
where: fragment("thread_visibility(?, (?)->>'id', ?) = true", ^ap_id, a.data, ^local_public)
)
end
defp restrict_thread_visibility(query, _, _), do: query
def fetch_user_abstract_activities(user, reading_user, params \\ %{}) do
params =
params
|> Map.put(:user, reading_user)
|> Map.put(:actor_id, user.ap_id)
%{
godmode: params[:godmode],
reading_user: reading_user
}
|> user_activities_recipients()
|> fetch_activities(params)
|> Enum.reverse()
end
def fetch_user_activities(user, reading_user, params \\ %{})
def fetch_user_activities(user, reading_user, %{total: true} = params) do
result = fetch_activities_for_user(user, reading_user, params)
Keyword.put(result, :items, Enum.reverse(result[:items]))
end
def fetch_user_activities(user, reading_user, params) do
user
|> fetch_activities_for_user(reading_user, params)
|> Enum.reverse()
end
defp fetch_activities_for_user(user, reading_user, params) do
params =
params
|> Map.put(:type, ["Create", "Announce"])
|> Map.put(:user, reading_user)
|> Map.put(:actor_id, user.ap_id)
|> Map.put(:pinned_object_ids, Map.keys(user.pinned_objects))
params =
if User.blocks?(reading_user, user) do
params
else
params
|> Map.put(:blocking_user, reading_user)
|> Map.put(:muting_user, reading_user)
end
pagination_type = Map.get(params, :pagination_type) || :keyset
%{
godmode: params[:godmode],
reading_user: reading_user
}
|> user_activities_recipients()
|> fetch_activities(params, pagination_type)
end
def fetch_statuses(reading_user, %{total: true} = params) do
result = fetch_activities_for_reading_user(reading_user, params)
Keyword.put(result, :items, Enum.reverse(result[:items]))
end
def fetch_statuses(reading_user, params) do
reading_user
|> fetch_activities_for_reading_user(params)
|> Enum.reverse()
end
defp fetch_activities_for_reading_user(reading_user, params) do
params = Map.put(params, :type, ["Create", "Announce"])
%{
godmode: params[:godmode],
reading_user: reading_user
}
|> user_activities_recipients()
|> fetch_activities(params, :offset)
end
defp user_activities_recipients(%{godmode: true}), do: []
defp user_activities_recipients(%{reading_user: reading_user}) do
if not is_nil(reading_user) and reading_user.local do
[
Constants.as_public(),
as_local_public(),
reading_user.ap_id | User.following(reading_user)
]
else
[Constants.as_public()]
end
end
defp restrict_announce_object_actor(_query, %{announce_filtering_user: _, skip_preload: true}) do
raise "Can't use the child object without preloading!"
end
defp restrict_announce_object_actor(query, %{announce_filtering_user: %{ap_id: actor}}) do
from(
[activity, object] in query,
where:
fragment(
"?->>'type' != ? or ?->>'actor' != ?",
activity.data,
"Announce",
object.data,
^actor
)
)
end
defp restrict_announce_object_actor(query, _), do: query
defp restrict_since(query, %{since_id: ""}), do: query
defp restrict_since(query, %{since_id: since_id}) do
from(activity in query, where: activity.id > ^since_id)
end
defp restrict_since(query, _), do: query
defp restrict_embedded_tag_all(_query, %{tag_all: _tag_all, skip_preload: true}) do
raise_on_missing_preload()
end
defp restrict_embedded_tag_all(query, %{tag_all: [_ | _] = tag_all}) do
from(
[_activity, object] in query,
where: fragment("(?)->'tag' \\?& (?)", object.data, ^tag_all)
)
end
defp restrict_embedded_tag_all(query, %{tag_all: tag}) when is_binary(tag) do
restrict_embedded_tag_any(query, %{tag: tag})
end
defp restrict_embedded_tag_all(query, _), do: query
defp restrict_embedded_tag_any(_query, %{tag: _tag, skip_preload: true}) do
raise_on_missing_preload()
end
defp restrict_embedded_tag_any(query, %{tag: [_ | _] = tag_any}) do
from(
[_activity, object] in query,
where: fragment("(?)->'tag' \\?| (?)", object.data, ^tag_any)
)
end
defp restrict_embedded_tag_any(query, %{tag: tag}) when is_binary(tag) do
restrict_embedded_tag_any(query, %{tag: [tag]})
end
defp restrict_embedded_tag_any(query, _), do: query
defp restrict_embedded_tag_reject_any(_query, %{tag_reject: _tag_reject, skip_preload: true}) do
raise_on_missing_preload()
end
defp restrict_embedded_tag_reject_any(query, %{tag_reject: [_ | _] = tag_reject}) do
from(
[_activity, object] in query,
where: fragment("not (?)->'tag' \\?| (?)", object.data, ^tag_reject)
)
end
defp restrict_embedded_tag_reject_any(query, %{tag_reject: tag_reject})
when is_binary(tag_reject) do
restrict_embedded_tag_reject_any(query, %{tag_reject: [tag_reject]})
end
defp restrict_embedded_tag_reject_any(query, _), do: query
defp object_ids_query_for_tags(tags) do
from(hto in "hashtags_objects")
|> join(:inner, [hto], ht in Pleroma.Hashtag, on: hto.hashtag_id == ht.id)
|> where([hto, ht], ht.name in ^tags)
|> select([hto], hto.object_id)
|> distinct([hto], true)
end
defp restrict_hashtag_all(_query, %{tag_all: _tag, skip_preload: true}) do
raise_on_missing_preload()
end
defp restrict_hashtag_all(query, %{tag_all: [single_tag]}) do
restrict_hashtag_any(query, %{tag: single_tag})
end
defp restrict_hashtag_all(query, %{tag_all: [_ | _] = tags}) do
from(
[_activity, object] in query,
where:
fragment(
"""
(SELECT array_agg(hashtags.name) FROM hashtags JOIN hashtags_objects
ON hashtags_objects.hashtag_id = hashtags.id WHERE hashtags.name = ANY(?)
AND hashtags_objects.object_id = ?) @> ?
""",
^tags,
object.id,
^tags
)
)
end
defp restrict_hashtag_all(query, %{tag_all: tag}) when is_binary(tag) do
restrict_hashtag_all(query, %{tag_all: [tag]})
end
defp restrict_hashtag_all(query, _), do: query
defp restrict_hashtag_any(_query, %{tag: _tag, skip_preload: true}) do
raise_on_missing_preload()
end
defp restrict_hashtag_any(query, %{tag: [_ | _] = tags}) do
hashtag_ids =
from(ht in Hashtag, where: ht.name in ^tags, select: ht.id)
|> Repo.all()
# Note: NO extra ordering should be done on "activities.id desc nulls last" for optimal plan
from(
[_activity, object] in query,
join: hto in "hashtags_objects",
on: hto.object_id == object.id,
where: hto.hashtag_id in ^hashtag_ids,
distinct: [desc: object.id],
order_by: [desc: object.id]
)
end
defp restrict_hashtag_any(query, %{tag: tag}) when is_binary(tag) do
restrict_hashtag_any(query, %{tag: [tag]})
end
defp restrict_hashtag_any(query, _), do: query
defp restrict_hashtag_reject_any(_query, %{tag_reject: _tag_reject, skip_preload: true}) do
raise_on_missing_preload()
end
defp restrict_hashtag_reject_any(query, %{tag_reject: [_ | _] = tags_reject}) do
from(
[_activity, object] in query,
where: object.id not in subquery(object_ids_query_for_tags(tags_reject))
)
end
defp restrict_hashtag_reject_any(query, %{tag_reject: tag_reject}) when is_binary(tag_reject) do
restrict_hashtag_reject_any(query, %{tag_reject: [tag_reject]})
end
defp restrict_hashtag_reject_any(query, _), do: query
defp raise_on_missing_preload do
raise "Can't use the child object without preloading!"
end
defp restrict_recipients(query, [], _user), do: query
defp restrict_recipients(query, recipients, nil) do
from(activity in query, where: fragment("? && ?", ^recipients, activity.recipients))
end
defp restrict_recipients(query, recipients, user) do
from(
activity in query,
where: fragment("? && ?", ^recipients, activity.recipients),
or_where: activity.actor == ^user.ap_id
)
end
defp restrict_local(query, %{local_only: true}) do
from(activity in query, where: activity.local == true)
end
defp restrict_local(query, _), do: query
defp restrict_remote(query, %{remote: true}) do
from(activity in query, where: activity.local == false)
end
defp restrict_remote(query, _), do: query
defp restrict_actor(query, %{actor_id: actor_id}) do
from(activity in query, where: activity.actor == ^actor_id)
end
defp restrict_actor(query, _), do: query
defp restrict_type(query, %{type: type}) when is_binary(type) do
from(activity in query, where: fragment("?->>'type' = ?", activity.data, ^type))
end
defp restrict_type(query, %{type: type}) do
from(activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type))
end
defp restrict_type(query, _), do: query
defp restrict_state(query, %{state: state}) do
from(activity in query, where: fragment("?->>'state' = ?", activity.data, ^state))
end
defp restrict_state(query, _), do: query
defp restrict_favorited_by(query, %{favorited_by: ap_id}) do
from(
[_activity, object] in query,
where: fragment("(?)->'likes' \\? (?)", object.data, ^ap_id)
)
end
defp restrict_favorited_by(query, _), do: query
defp restrict_media(_query, %{only_media: _val, skip_preload: true}) do
raise "Can't use the child object without preloading!"
end
defp restrict_media(query, %{only_media: true}) do
from(
[activity, object] in query,
where: fragment("(?)->>'type' = ?", activity.data, "Create"),
where: fragment("not (?)->'attachment' = (?)", object.data, ^[])
)
end
defp restrict_media(query, _), do: query
defp restrict_replies(query, %{exclude_replies: true}) do
from(
[_activity, object] in query,
where: fragment("?->>'inReplyTo' is null", object.data)
)
end
defp restrict_replies(query, %{
reply_filtering_user: %User{} = user,
reply_visibility: "self"
}) do
from(
[activity, object] in query,
where:
fragment(
"?->>'inReplyTo' is null OR ? = ANY(?)",
object.data,
^user.ap_id,
activity.recipients
)
)
end
defp restrict_replies(query, %{
reply_filtering_user: %User{} = user,
reply_visibility: "following"
}) do
from(
[activity, object] in query,
where:
fragment(
"""
?->>'type' != 'Create' -- This isn't a Create
OR ?->>'inReplyTo' is null -- this isn't a reply
OR ? && array_remove(?, ?) -- The recipient is us or one of our friends,
-- unless they are the author (because authors
-- are also part of the recipients). This leads
-- to a bug that self-replies by friends won't
-- show up.
OR ? = ? -- The actor is us
""",
activity.data,
object.data,
^[user.ap_id | User.get_cached_user_friends_ap_ids(user)],
activity.recipients,
activity.actor,
activity.actor,
^user.ap_id
)
)
end
defp restrict_replies(query, _), do: query
defp restrict_reblogs(query, %{exclude_reblogs: true}) do
from(activity in query, where: fragment("?->>'type' != 'Announce'", activity.data))
end
defp restrict_reblogs(query, _), do: query
defp restrict_muted(query, %{with_muted: true}), do: query
defp restrict_muted(query, %{muting_user: %User{} = user} = opts) do
mutes = opts[:muted_users_ap_ids] || User.muted_users_ap_ids(user)
query =
from([activity] in query,
where: fragment("not (? = ANY(?))", activity.actor, ^mutes),
where:
fragment(
"not (?->'to' \\?| ?) or ? = ?",
activity.data,
^mutes,
activity.actor,
^user.ap_id
)
)
unless opts[:skip_preload] do
from([thread_mute: tm] in query, where: is_nil(tm.user_id))
else
query
end
end
defp restrict_muted(query, _), do: query
defp restrict_blocked(query, %{blocking_user: %User{} = user} = opts) do
blocked_ap_ids = opts[:blocked_users_ap_ids] || User.blocked_users_ap_ids(user)
domain_blocks = user.domain_blocks || []
following_ap_ids = User.get_friends_ap_ids(user)
query =
if has_named_binding?(query, :object), do: query, else: Activity.with_joined_object(query)
from(
[activity, object: o] in query,
# You don't block the author
where: fragment("not (? = ANY(?))", activity.actor, ^blocked_ap_ids),
# You don't block any recipients, and didn't author the post
where:
fragment(
"((not (? && ?)) or ? = ?)",
activity.recipients,
^blocked_ap_ids,
activity.actor,
^user.ap_id
),
# You don't block the domain of any recipients, and didn't author the post
where:
fragment(
"(recipients_contain_blocked_domains(?, ?) = false) or ? = ?",
activity.recipients,
^domain_blocks,
activity.actor,
^user.ap_id
),
# It's not a boost of a user you block
where:
fragment(
"not (?->>'type' = 'Announce' and ?->'to' \\?| ?)",
activity.data,
activity.data,
^blocked_ap_ids
),
# You don't block the author's domain, and also don't follow the author
where:
fragment(
"(not (split_part(?, '/', 3) = ANY(?))) or ? = ANY(?)",
activity.actor,
^domain_blocks,
activity.actor,
^following_ap_ids
),
# Same as above, but checks the Object
where:
fragment(
"(not (split_part(?->>'actor', '/', 3) = ANY(?))) or (?->>'actor') = ANY(?)",
o.data,
^domain_blocks,
o.data,
^following_ap_ids
)
)
end
defp restrict_blocked(query, _), do: query
defp restrict_blockers_visibility(query, %{blocking_user: %User{} = user}) do
if Config.get([:activitypub, :blockers_visible]) == true do
query
else
blocker_ap_ids = User.incoming_relationships_ungrouped_ap_ids(user, [:block])
from(
activity in query,
# The author doesn't block you
where: fragment("not (? = ANY(?))", activity.actor, ^blocker_ap_ids),
# It's not a boost of a user that blocks you
where:
fragment(
"not (?->>'type' = 'Announce' and ?->'to' \\?| ?)",
activity.data,
activity.data,
^blocker_ap_ids
)
)
end
end
defp restrict_blockers_visibility(query, _), do: query
defp restrict_unlisted(query, %{restrict_unlisted: true}) do
from(
activity in query,
where:
fragment(
"not (coalesce(?->'cc', '{}'::jsonb) \\?| ?)",
activity.data,
^[Constants.as_public()]
)
)
end
defp restrict_unlisted(query, _), do: query
defp restrict_pinned(query, %{pinned: true, pinned_object_ids: ids}) do
from(
[activity, object: o] in query,
where:
fragment(
"(?)->>'type' = 'Create' and coalesce((?)->'object'->>'id', (?)->>'object') = any (?)",
activity.data,
activity.data,
activity.data,
^ids
)
)
end
defp restrict_pinned(query, _), do: query
defp restrict_muted_reblogs(query, %{muting_user: %User{} = user} = opts) do
muted_reblogs = opts[:reblog_muted_users_ap_ids] || User.reblog_muted_users_ap_ids(user)
from(
activity in query,
where:
fragment(
"not ( ?->>'type' = 'Announce' and ? = ANY(?))",
activity.data,
activity.actor,
^muted_reblogs
)
)
end
defp restrict_muted_reblogs(query, _), do: query
defp restrict_instance(query, %{instance: instance}) when is_binary(instance) do
from(
activity in query,
where: fragment("split_part(actor::text, '/'::text, 3) = ?", ^instance)
)
end
defp restrict_instance(query, %{instance: instance}) when is_list(instance) do
from(
activity in query,
where: fragment("split_part(actor::text, '/'::text, 3) = ANY(?)", ^instance)
)
end
defp restrict_instance(query, _), do: query
defp restrict_filtered(query, %{user: %User{} = user}) do
case Filter.compose_regex(user) do
nil ->
query
regex ->
from([activity, object] in query,
where:
fragment("not(?->>'content' ~* ?)", object.data, ^regex) or
activity.actor == ^user.ap_id
)
end
end
defp restrict_filtered(query, %{blocking_user: %User{} = user}) do
restrict_filtered(query, %{user: user})
end
defp restrict_filtered(query, _), do: query
defp exclude_poll_votes(query, %{include_poll_votes: true}), do: query
defp exclude_poll_votes(query, _) do
if has_named_binding?(query, :object) do
from([activity, object: o] in query,
where: fragment("not(?->>'type' = ?)", o.data, "Answer")
)
else
query
end
end
defp exclude_invisible_actors(query, %{invisible_actors: true}), do: query
defp exclude_invisible_actors(query, _opts) do
invisible_ap_ids =
User.Query.build(%{invisible: true, select: [:ap_id]})
|> Repo.all()
|> Enum.map(fn %{ap_id: ap_id} -> ap_id end)
from([activity] in query, where: activity.actor not in ^invisible_ap_ids)
end
defp exclude_id(query, %{exclude_id: id}) when is_binary(id) do
from(activity in query, where: activity.id != ^id)
end
defp exclude_id(query, _), do: query
defp maybe_preload_objects(query, %{skip_preload: true}), do: query
defp maybe_preload_objects(query, _) do
query
|> Activity.with_preloaded_object()
end
defp maybe_preload_bookmarks(query, %{skip_preload: true}), do: query
defp maybe_preload_bookmarks(query, opts) do
query
|> Activity.with_preloaded_bookmark(opts[:user])
end
defp maybe_preload_report_notes(query, %{preload_report_notes: true}) do
query
|> Activity.with_preloaded_report_notes()
end
defp maybe_preload_report_notes(query, _), do: query
defp maybe_set_thread_muted_field(query, %{skip_preload: true}), do: query
defp maybe_set_thread_muted_field(query, opts) do
query
|> Activity.with_set_thread_muted_field(opts[:muting_user] || opts[:user])
end
defp maybe_order(query, %{order: :desc}) do
query
|> order_by(desc: :id)
end
defp maybe_order(query, %{order: :asc}) do
query
|> order_by(asc: :id)
end
defp maybe_order(query, _), do: query
defp normalize_fetch_activities_query_opts(opts) do
Enum.reduce([:tag, :tag_all, :tag_reject], opts, fn key, opts ->
case opts[key] do
value when is_bitstring(value) ->
Map.put(opts, key, Hashtag.normalize_name(value))
value when is_list(value) ->
normalized_value =
value
|> Enum.map(&Hashtag.normalize_name/1)
|> Enum.uniq()
Map.put(opts, key, normalized_value)
_ ->
opts
end
end)
end
defp fetch_activities_query_ap_ids_ops(opts) do
source_user = opts[:muting_user]
ap_id_relationships = if source_user, do: [:mute, :reblog_mute], else: []
ap_id_relationships =
if opts[:blocking_user] && opts[:blocking_user] == source_user do
[:block | ap_id_relationships]
else
ap_id_relationships
end
preloaded_ap_ids = User.outgoing_relationships_ap_ids(source_user, ap_id_relationships)
restrict_blocked_opts = Map.merge(%{blocked_users_ap_ids: preloaded_ap_ids[:block]}, opts)
restrict_muted_opts = Map.merge(%{muted_users_ap_ids: preloaded_ap_ids[:mute]}, opts)
restrict_muted_reblogs_opts =
Map.merge(%{reblog_muted_users_ap_ids: preloaded_ap_ids[:reblog_mute]}, opts)
{restrict_blocked_opts, restrict_muted_opts, restrict_muted_reblogs_opts}
end
def fetch_activities_query(recipients, opts \\ %{}) do
opts = normalize_fetch_activities_query_opts(opts)
{restrict_blocked_opts, restrict_muted_opts, restrict_muted_reblogs_opts} =
fetch_activities_query_ap_ids_ops(opts)
config = %{
skip_thread_containment: Config.get([:instance, :skip_thread_containment])
}
query =
Activity
|> maybe_preload_objects(opts)
|> maybe_preload_bookmarks(opts)
|> maybe_preload_report_notes(opts)
|> maybe_set_thread_muted_field(opts)
|> maybe_order(opts)
|> restrict_recipients(recipients, opts[:user])
|> restrict_replies(opts)
|> restrict_since(opts)
|> restrict_local(opts)
|> restrict_remote(opts)
|> restrict_actor(opts)
|> restrict_type(opts)
|> restrict_state(opts)
|> restrict_favorited_by(opts)
|> restrict_blocked(restrict_blocked_opts)
|> restrict_blockers_visibility(opts)
|> restrict_muted(restrict_muted_opts)
|> restrict_filtered(opts)
|> restrict_media(opts)
|> restrict_visibility(opts)
|> restrict_thread_visibility(opts, config)
|> restrict_reblogs(opts)
|> restrict_pinned(opts)
|> restrict_muted_reblogs(restrict_muted_reblogs_opts)
|> restrict_instance(opts)
|> restrict_announce_object_actor(opts)
|> restrict_filtered(opts)
|> Activity.restrict_deactivated_users()
|> exclude_poll_votes(opts)
|> exclude_invisible_actors(opts)
|> exclude_visibility(opts)
if Config.feature_enabled?(:improved_hashtag_timeline) do
query
|> restrict_hashtag_any(opts)
|> restrict_hashtag_all(opts)
|> restrict_hashtag_reject_any(opts)
else
query
|> restrict_embedded_tag_any(opts)
|> restrict_embedded_tag_all(opts)
|> restrict_embedded_tag_reject_any(opts)
end
end
@doc """
Fetch favorites activities of user with order by sort adds to favorites
"""
@spec fetch_favourites(User.t(), map(), Pagination.type()) :: list(Activity.t())
def fetch_favourites(user, params \\ %{}, pagination \\ :keyset) do
user.ap_id
|> Activity.Queries.by_actor()
|> Activity.Queries.by_type("Like")
|> Activity.with_joined_object()
|> Object.with_joined_activity()
|> select([like, object, activity], %{activity | object: object, pagination_id: like.id})
|> order_by([like, _, _], desc_nulls_last: like.id)
|> Pagination.fetch_paginated(
Map.merge(params, %{skip_order: true}),
pagination
)
end
defp maybe_update_cc(activities, [_ | _] = list_memberships, %User{ap_id: user_ap_id}) do
Enum.map(activities, fn
%{data: %{"bcc" => [_ | _] = bcc}} = activity ->
if Enum.any?(bcc, &(&1 in list_memberships)) do
update_in(activity.data["cc"], &[user_ap_id | &1])
else
activity
end
activity ->
activity
end)
end
defp maybe_update_cc(activities, _, _), do: activities
defp fetch_activities_bounded_query(query, recipients, recipients_with_public) do
from(activity in query,
where:
fragment("? && ?", activity.recipients, ^recipients) or
(fragment("? && ?", activity.recipients, ^recipients_with_public) and
^Constants.as_public() in activity.recipients)
)
end
def fetch_activities_bounded(
recipients,
recipients_with_public,
opts \\ %{},
pagination \\ :keyset
) do
fetch_activities_query([], opts)
|> fetch_activities_bounded_query(recipients, recipients_with_public)
|> Pagination.fetch_paginated(opts, pagination)
|> Enum.reverse()
end
@spec upload(Upload.source(), keyword()) :: {:ok, Object.t()} | {:error, any()}
def upload(file, opts \\ []) do
with {:ok, data} <- Upload.store(file, opts) do
obj_data = Maps.put_if_present(data, "actor", opts[:actor])
Repo.insert(%Object{data: obj_data})
end
end
@spec get_actor_url(any()) :: binary() | nil
defp get_actor_url(url) when is_binary(url), do: url
defp get_actor_url(%{"href" => href}) when is_binary(href), do: href
defp get_actor_url(url) when is_list(url) do
url
|> List.first()
|> get_actor_url()
end
defp get_actor_url(_url), do: nil
defp normalize_image(%{"url" => url}) do
%{
"type" => "Image",
"url" => [%{"href" => url}]
}
end
defp normalize_image(urls) when is_list(urls), do: urls |> List.first() |> normalize_image()
defp normalize_image(_), do: nil
defp object_to_user_data(data, additional) do
fields =
data
|> Map.get("attachment", [])
|> Enum.filter(fn %{"type" => t} -> t == "PropertyValue" end)
|> Enum.map(fn fields -> Map.take(fields, ["name", "value"]) end)
emojis =
data
|> Map.get("tag", [])
|> Enum.filter(fn
%{"type" => "Emoji"} -> true
_ -> false
end)
|> Map.new(fn %{"icon" => %{"url" => url}, "name" => name} ->
{String.trim(name, ":"), url}
end)
is_locked = data["manuallyApprovesFollowers"] || false
data = Transmogrifier.maybe_fix_user_object(data)
is_discoverable = data["discoverable"] || false
invisible = data["invisible"] || false
actor_type = data["type"] || "Person"
featured_address = data["featured"]
{:ok, pinned_objects} = fetch_and_prepare_featured_from_ap_id(featured_address)
public_key =
if is_map(data["publicKey"]) && is_binary(data["publicKey"]["publicKeyPem"]) do
data["publicKey"]["publicKeyPem"]
end
shared_inbox =
if is_map(data["endpoints"]) && is_binary(data["endpoints"]["sharedInbox"]) do
data["endpoints"]["sharedInbox"]
end
# if WebFinger request was already done, we probably have acct, otherwise
# we request WebFinger here
nickname = additional[:nickname_from_acct] || generate_nickname(data)
%{
ap_id: data["id"],
uri: get_actor_url(data["url"]),
ap_enabled: true,
banner: normalize_image(data["image"]),
fields: fields,
emoji: emojis,
is_locked: is_locked,
is_discoverable: is_discoverable,
invisible: invisible,
avatar: normalize_image(data["icon"]),
name: data["name"],
follower_address: data["followers"],
following_address: data["following"],
featured_address: featured_address,
bio: data["summary"] || "",
actor_type: actor_type,
also_known_as: Map.get(data, "alsoKnownAs", []),
public_key: public_key,
inbox: data["inbox"],
shared_inbox: shared_inbox,
pinned_objects: pinned_objects,
nickname: nickname
}
end
defp generate_nickname(%{"preferredUsername" => username} = data) when is_binary(username) do
generated = "#{username}@#{URI.parse(data["id"]).host}"
if Config.get([WebFinger, :update_nickname_on_user_fetch]) do
case WebFinger.finger(generated) do
{:ok, %{"subject" => "acct:" <> acct}} -> acct
_ -> generated
end
else
generated
end
end
# nickname can be nil because of virtual actors
defp generate_nickname(_), do: nil
def fetch_follow_information_for_user(user) do
with {:ok, following_data} <-
Fetcher.fetch_and_contain_remote_object_from_id(user.following_address),
{:ok, hide_follows} <- collection_private(following_data),
{:ok, followers_data} <-
Fetcher.fetch_and_contain_remote_object_from_id(user.follower_address),
{:ok, hide_followers} <- collection_private(followers_data) do
{:ok,
%{
hide_follows: hide_follows,
follower_count: normalize_counter(followers_data["totalItems"]),
following_count: normalize_counter(following_data["totalItems"]),
hide_followers: hide_followers
}}
else
{:error, _} = e -> e
e -> {:error, e}
end
end
defp normalize_counter(counter) when is_integer(counter), do: counter
defp normalize_counter(_), do: 0
def maybe_update_follow_information(user_data) do
with {:enabled, true} <- {:enabled, Config.get([:instance, :external_user_synchronization])},
{_, true} <- {:user_type_check, user_data[:type] in ["Person", "Service"]},
{_, true} <-
{:collections_available,
!!(user_data[:following_address] && user_data[:follower_address])},
{:ok, info} <-
fetch_follow_information_for_user(user_data) do
info = Map.merge(user_data[:info] || %{}, info)
user_data
|> Map.put(:info, info)
else
{:user_type_check, false} ->
user_data
{:collections_available, false} ->
user_data
{:enabled, false} ->
user_data
e ->
Logger.error(
"Follower/Following counter update for #{user_data.ap_id} failed.\n" <> inspect(e)
)
user_data
end
end
defp collection_private(%{"first" => %{"type" => type}})
when type in ["CollectionPage", "OrderedCollectionPage"],
do: {:ok, false}
defp collection_private(%{"first" => first}) do
with {:ok, %{"type" => type}} when type in ["CollectionPage", "OrderedCollectionPage"] <-
Fetcher.fetch_and_contain_remote_object_from_id(first) do
{:ok, false}
else
{:error, {:ok, %{status: code}}} when code in [401, 403] -> {:ok, true}
{:error, _} = e -> e
e -> {:error, e}
end
end
defp collection_private(_data), do: {:ok, true}
def user_data_from_user_object(data, additional \\ []) do
with {:ok, data} <- MRF.filter(data) do
{:ok, object_to_user_data(data, additional)}
else
e -> {:error, e}
end
end
def fetch_and_prepare_user_from_ap_id(ap_id, additional \\ []) do
with {:ok, data} <- Fetcher.fetch_and_contain_remote_object_from_id(ap_id),
{:ok, data} <- user_data_from_user_object(data, additional) do
{:ok, maybe_update_follow_information(data)}
else
# If this has been deleted, only log a debug and not an error
{:error, "Object has been deleted" = e} ->
Logger.debug("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
{:error, e}
{:error, {:reject, reason} = e} ->
Logger.info("Rejected user #{ap_id}: #{inspect(reason)}")
{:error, e}
{:error, e} ->
Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
{:error, e}
end
end
def maybe_handle_clashing_nickname(data) do
with nickname when is_binary(nickname) <- data[:nickname],
%User{} = old_user <- User.get_by_nickname(nickname),
{_, false} <- {:ap_id_comparison, data[:ap_id] == old_user.ap_id} do
Logger.info(
"Found an old user for #{nickname}, the old ap id is #{old_user.ap_id}, new one is #{data[:ap_id]}, renaming."
)
old_user
|> User.remote_user_changeset(%{nickname: "#{old_user.id}.#{old_user.nickname}"})
|> User.update_and_set_cache()
else
{:ap_id_comparison, true} ->
Logger.info(
"Found an old user for #{data[:nickname]}, but the ap id #{data[:ap_id]} is the same as the new user. Race condition? Not changing anything."
)
_ ->
nil
end
end
def pin_data_from_featured_collection(%{
"type" => "OrderedCollection",
"first" => first
}) do
with {:ok, page} <- Fetcher.fetch_and_contain_remote_object_from_id(first) do
page
|> Map.get("orderedItems")
|> Map.new(fn %{"id" => object_ap_id} -> {object_ap_id, NaiveDateTime.utc_now()} end)
else
e ->
Logger.error("Could not decode featured collection at fetch #{first}, #{inspect(e)}")
{:ok, %{}}
end
end
def pin_data_from_featured_collection(
%{
"type" => type
} = collection
)
when type in ["OrderedCollection", "Collection"] do
{:ok, objects} = Collections.Fetcher.fetch_collection(collection)
# Items can either be a map _or_ a string
objects
|> Map.new(fn
ap_id when is_binary(ap_id) -> {ap_id, NaiveDateTime.utc_now()}
%{"id" => object_ap_id} -> {object_ap_id, NaiveDateTime.utc_now()}
end)
end
def fetch_and_prepare_featured_from_ap_id(nil) do
{:ok, %{}}
end
def fetch_and_prepare_featured_from_ap_id(ap_id) do
with {:ok, data} <- Fetcher.fetch_and_contain_remote_object_from_id(ap_id) do
{:ok, pin_data_from_featured_collection(data)}
else
e ->
Logger.error("Could not decode featured collection at fetch #{ap_id}, #{inspect(e)}")
{:ok, %{}}
end
end
def pinned_fetch_task(nil), do: nil
def pinned_fetch_task(%{pinned_objects: pins}) do
if Enum.all?(pins, fn {ap_id, _} ->
Object.get_cached_by_ap_id(ap_id) ||
match?({:ok, _object}, Fetcher.fetch_object_from_id(ap_id))
end) do
:ok
else
:error
end
end
def make_user_from_ap_id(ap_id, additional \\ []) do
user = User.get_cached_by_ap_id(ap_id)
if user && !User.ap_enabled?(user) do
Transmogrifier.upgrade_user_from_ap_id(ap_id)
else
with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id, additional) do
{:ok, _pid} = Task.start(fn -> pinned_fetch_task(data) end)
if user do
user
|> User.remote_user_changeset(data)
|> User.update_and_set_cache()
else
maybe_handle_clashing_nickname(data)
data
|> User.remote_user_changeset()
|> Repo.insert()
|> User.set_cache()
end
end
end
end
def make_user_from_nickname(nickname) do
with {:ok, %{"ap_id" => ap_id, "subject" => "acct:" <> acct}} when not is_nil(ap_id) <-
WebFinger.finger(nickname) do
make_user_from_ap_id(ap_id, nickname_from_acct: acct)
else
_e -> {:error, "No AP id in WebFinger"}
end
end
# filter out broken threads
defp contain_broken_threads(%Activity{} = activity, %User{} = user) do
entire_thread_visible_for_user?(activity, user)
end
# do post-processing on a specific activity
def contain_activity(%Activity{} = activity, %User{} = user) do
contain_broken_threads(activity, user)
end
def fetch_direct_messages_query do
Activity
|> restrict_type(%{type: "Create"})
|> restrict_visibility(%{visibility: "direct"})
|> order_by([activity], asc: activity.id)
end
end