akkoma/lib/pleroma/web/activity_pub/activity_pub.ex

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.ActivityPub.ActivityPub do
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alias Pleroma.Activity
alias Pleroma.Activity.Ir.Topics
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alias Pleroma.Config
alias Pleroma.Constants
alias Pleroma.Conversation
alias Pleroma.Conversation.Participation
alias Pleroma.Filter
alias Pleroma.Maps
alias Pleroma.Notification
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alias Pleroma.Object
alias Pleroma.Object.Containment
alias Pleroma.Object.Fetcher
alias Pleroma.Pagination
alias Pleroma.Repo
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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
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import Ecto.Query
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import Pleroma.Web.ActivityPub.Utils
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import Pleroma.Web.ActivityPub.Visibility
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require Logger
require Pleroma.Constants
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@behaviour Pleroma.Web.ActivityPub.ActivityPub.Persisting
@behaviour Pleroma.Web.ActivityPub.ActivityPub.Streaming
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defp get_recipients(%{"type" => "Create"} = data) do
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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()
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{recipients, to, cc}
end
defp get_recipients(data) do
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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_is_active(nil), do: true
defp check_actor_is_active(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_remote_limit(%{"object" => %{"content" => content}}) when not is_nil(content) do
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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
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
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@object_types ~w[ChatMessage Question Answer Audio Video Event Article]
@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
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with local <- Keyword.fetch!(meta, :local),
{recipients, _, _} <- get_recipients(object),
{:ok, activity} <-
Repo.insert(%Activity{
data: object,
local: local,
recipients: recipients,
actor: object["actor"]
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}),
# TODO: add tests for expired activities, when Note type will be supported in new pipeline
{:ok, _} <- maybe_create_activity_expiration(activity) do
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{: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_is_active(map["actor"])},
{_, true} <- {:remote_limit_pass, check_remote_limit(map)},
{:ok, map} <- MRF.filter(map),
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{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)
{:ok, activity}
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else
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%Activity{} = activity ->
{:ok, activity}
{:actor_check, _} ->
{:error, false}
{:containment, _} = error ->
error
{:error, _} = error ->
error
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{:fake, true, map, recipients} ->
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activity = %Activity{
data: map,
local: local,
actor: map["actor"],
recipients: recipients,
id: "pleroma:fakeid"
}
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Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)
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{:ok, activity}
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{:remote_limit_pass, _} ->
{:error, :remote_limit}
{:reject, _} = e ->
{:error, e}
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end
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end
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defp insert_activity_with_expiration(data, local, recipients) do
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struct = %Activity{
data: data,
local: local,
actor: data["actor"],
recipients: recipients
}
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with {:ok, activity} <- Repo.insert(struct) do
maybe_create_activity_expiration(activity)
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end
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end
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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
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defp maybe_create_activity_expiration(
%{data: %{"expires_at" => %DateTime{} = expires_at}} = activity
) do
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with {:ok, _job} <-
Pleroma.Workers.PurgeExpiredActivity.enqueue(%{
activity_id: activity.id,
expires_at: expires_at
}) do
{:ok, activity}
end
end
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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
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additional = params[:additional] || %{}
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# only accept false as false value
local = !(params[:local] == false)
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published = params[:published]
quick_insert? = Config.get([:env]) == :benchmark
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create_data =
make_create_data(
%{to: to, actor: actor, published: published, context: context, object: object},
additional
)
with {:ok, activity} <- insert(create_data, local, fake),
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{:fake, false, activity} <- {:fake, fake, activity},
_ <- increase_replies_count_if_reply(create_data),
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{:quick_insert, false, activity} <- {:quick_insert, quick_insert?, activity},
{:ok, _actor} <- increase_note_count_if_public(actor, activity),
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_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity}
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else
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{:quick_insert, true, activity} ->
{:ok, activity}
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{:fake, true, activity} ->
{:ok, activity}
{:error, message} ->
Repo.rollback(message)
end
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end
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@spec listen(map()) :: {:ok, Activity.t()} | {:error, any()}
def listen(%{to: to, actor: actor, context: context, object: object} = params) do
additional = params[:additional] || %{}
# only accept false as false value
local = !(params[:local] == false)
published = params[:published]
listen_data =
make_listen_data(
%{to: to, actor: actor, published: published, context: context, object: object},
additional
)
with {:ok, activity} <- insert(listen_data, local),
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_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity}
end
end
@spec unfollow(User.t(), User.t(), String.t() | nil, boolean()) ::
{:ok, Activity.t()} | nil | {:error, any()}
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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) do
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with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
{:ok, follow_activity} <- update_follow_state(follow_activity, "cancelled"),
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unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
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{:ok, activity} <- insert(unfollow_data, local),
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_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
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{:ok, activity}
else
nil -> nil
{:error, error} -> Repo.rollback(error)
end
end
@spec flag(map()) :: {:ok, Activity.t()} | {:error, any()}
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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
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# only accept false as false value
local = !(params[:local] == false)
forward = !(params[:forward] == false)
additional = params[:additional] || %{}
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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),
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_ <- notify_and_stream(activity),
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:ok <-
maybe_federate(stripped_activity) do
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User.all_superusers()
|> 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}
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else
{:error, error} -> Repo.rollback(error)
end
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end
@spec move(User.t(), User.t(), boolean()) :: {:ok, Activity.t()} | {:error, any()}
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def move(%User{} = origin, %User{} = target, local \\ true) do
params = %{
"type" => "Move",
"actor" => origin.ap_id,
"object" => origin.ap_id,
"target" => target.ap_id
}
with true <- origin.ap_id in target.also_known_as,
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{:ok, activity} <- insert(params, local),
_ <- notify_and_stream(activity) do
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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
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def fetch_activities_for_context_query(context, opts) do
public = [Constants.as_public()]
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recipients =
if opts[:user],
do: [opts[:user].ap_id | User.following(opts[:user])] ++ public,
else: public
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from(activity in Activity)
|> maybe_preload_objects(opts)
|> maybe_preload_bookmarks(opts)
|> maybe_set_thread_muted_field(opts)
|> restrict_blocked(opts)
|> restrict_recipients(recipients, opts[:user])
|> restrict_filtered(opts)
|> where(
[activity],
fragment(
"?->>'type' = ? and ?->>'context' = ?",
activity.data,
"Create",
activity.data,
^context
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)
)
|> 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
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@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()
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end
@spec fetch_public_or_unlisted_activities(map(), Pagination.type()) :: [Activity.t()]
def fetch_public_or_unlisted_activities(opts \\ %{}, pagination \\ :keyset) do
opts = Map.delete(opts, :user)
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[Constants.as_public()]
|> fetch_activities_query(opts)
|> restrict_unlisted(opts)
|> Pagination.fetch_paginated(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)
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end
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@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
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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)
)
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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
from(
a in query,
where: fragment("thread_visibility(?, (?)->>'id') = true", ^ap_id, a.data)
)
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 \\ %{}) do
params =
params
|> Map.put(:type, ["Create", "Announce"])
|> Map.put(:user, reading_user)
|> Map.put(:actor_id, user.ap_id)
|> Map.put(:pinned_activity_ids, user.pinned_activities)
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
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%{
godmode: params[:godmode],
reading_user: reading_user
}
|> user_activities_recipients()
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|> fetch_activities(params, pagination_type)
|> Enum.reverse()
end
def fetch_statuses(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)
|> Enum.reverse()
end
defp user_activities_recipients(%{godmode: true}), do: []
defp user_activities_recipients(%{reading_user: reading_user}) do
if reading_user do
[Constants.as_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
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from(activity in query, where: activity.id > ^since_id)
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end
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defp restrict_since(query, _), do: query
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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
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from(
[_activity, object] in query,
where: fragment("(?)->'tag' \\?& (?)", object.data, ^tag_all)
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)
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
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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}) do
from(
[_activity, object] in query,
where: fragment("(?)->'tag' \\?| (?)", object.data, ^tag)
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)
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 restrict_hashtag_all(_query, %{tag_all: _tag, skip_preload: true}) do
raise_on_missing_preload()
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_any(query, %{tag: 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
from(
[_activity, object] in query,
where:
fragment(
"""
EXISTS (SELECT 1 FROM hashtags JOIN hashtags_objects
ON hashtags_objects.hashtag_id = hashtags.id WHERE hashtags.name = ANY(?)
AND hashtags_objects.object_id = ? LIMIT 1)
""",
^tags,
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:
fragment(
"""
NOT EXISTS (SELECT 1 FROM hashtags JOIN hashtags_objects
ON hashtags_objects.hashtag_id = hashtags.id WHERE hashtags.name = ANY(?)
AND hashtags_objects.object_id = ? LIMIT 1)
""",
^tags_reject,
object.id
)
)
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end
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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
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defp restrict_recipients(query, [], _user), do: query
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defp restrict_recipients(query, recipients, nil) do
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from(activity in query, where: fragment("? && ?", ^recipients, activity.recipients))
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end
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defp restrict_recipients(query, recipients, user) do
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from(
activity in query,
where: fragment("? && ?", ^recipients, activity.recipients),
or_where: activity.actor == ^user.ap_id
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)
end
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defp restrict_local(query, %{local_only: true}) do
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from(activity in query, where: activity.local == true)
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end
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defp restrict_local(query, _), do: query
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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
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from(activity in query, where: activity.actor == ^actor_id)
end
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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))
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end
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defp restrict_type(query, %{type: type}) do
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from(activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type))
end
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defp restrict_type(query, _), do: query
defp restrict_state(query, %{state: state}) do
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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
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from(
[_activity, object] in query,
where: fragment("(?)->'likes' \\? (?)", object.data, ^ap_id)
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)
end
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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
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from(
[activity, object] in query,
where: fragment("(?)->>'type' = ?", activity.data, "Create"),
where: fragment("not (?)->'attachment' = (?)", object.data, ^[])
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)
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end
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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
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defp restrict_replies(query, %{
reply_filtering_user: %User{} = user,
reply_visibility: "self"
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}) 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"
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}) do
from(
[activity, object] in query,
where:
fragment(
"""
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?->>'type' != 'Create' -- This isn't a Create
OR ?->>'inReplyTo' is null -- this isn't a reply
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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,
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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
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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 || []
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following_ap_ids = User.get_friends_ap_ids(user)
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query =
if has_named_binding?(query, :object), do: query, else: Activity.with_joined_object(query)
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from(
[activity, object: o] in query,
where: fragment("not (? = ANY(?))", activity.actor, ^blocked_ap_ids),
where:
fragment(
"((not (? && ?)) or ? = ?)",
activity.recipients,
^blocked_ap_ids,
activity.actor,
^user.ap_id
),
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where:
fragment(
"recipients_contain_blocked_domains(?, ?) = false",
activity.recipients,
^domain_blocks
),
where:
fragment(
"not (?->>'type' = 'Announce' and ?->'to' \\?| ?)",
activity.data,
activity.data,
^blocked_ap_ids
),
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where:
fragment(
"(not (split_part(?, '/', 3) = ANY(?))) or ? = ANY(?)",
activity.actor,
^domain_blocks,
activity.actor,
^following_ap_ids
),
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where:
fragment(
"(not (split_part(?->>'actor', '/', 3) = ANY(?))) or (?->>'actor') = ANY(?)",
o.data,
^domain_blocks,
o.data,
^following_ap_ids
)
)
end
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defp restrict_blocked(query, _), do: query
defp restrict_unlisted(query, %{restrict_unlisted: true}) do
from(
activity in query,
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where:
fragment(
"not (coalesce(?->'cc', '{}'::jsonb) \\?| ?)",
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activity.data,
^[Constants.as_public()]
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)
)
end
defp restrict_unlisted(query, _), do: query
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defp restrict_pinned(query, %{pinned: true, pinned_activity_ids: ids}) do
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from(activity in query, where: activity.id in ^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)
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from(
activity in query,
where:
fragment(
"not ( ?->>'type' = 'Announce' and ? = ANY(?))",
activity.data,
activity.actor,
^muted_reblogs
)
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)
end
defp restrict_muted_reblogs(query, _), do: query
defp restrict_instance(query, %{instance: instance}) when is_binary(instance) do
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from(
activity in query,
where: fragment("split_part(actor::text, '/'::text, 3) = ?", ^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_chat_messages(query, %{include_chat_messages: true}), do: query
defp exclude_chat_messages(query, _) do
if has_named_binding?(query, :object) do
from([activity, object: o] in query,
where: fragment("not(?->>'type' = ?)", o.data, "ChatMessage")
)
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
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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 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
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def fetch_activities_query(recipients, opts \\ %{}) do
{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])
}
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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_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_chat_messages(opts)
|> exclude_invisible_actors(opts)
|> exclude_visibility(opts)
if Config.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
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end
def fetch_activities(recipients, opts \\ %{}, pagination \\ :keyset) do
list_memberships = Pleroma.List.memberships(opts[:user])
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fetch_activities_query(recipients ++ list_memberships, opts)
|> Pagination.fetch_paginated(opts, pagination)
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|> Enum.reverse()
|> maybe_update_cc(list_memberships, opts[:user])
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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())
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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)
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|> Pagination.fetch_paginated(
Map.merge(params, %{skip_order: true}),
pagination
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)
end
defp maybe_update_cc(activities, [_ | _] = list_memberships, %User{ap_id: user_ap_id}) do
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Enum.map(activities, fn
%{data: %{"bcc" => [_ | _] = bcc}} = activity ->
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if Enum.any?(bcc, &(&1 in list_memberships)) do
update_in(activity.data["cc"], &[user_ap_id | &1])
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else
activity
end
activity ->
activity
end)
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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()}
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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
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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 object_to_user_data(data) do
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avatar =
data["icon"]["url"] &&
%{
"type" => "Image",
"url" => [%{"href" => data["icon"]["url"]}]
}
banner =
data["image"]["url"] &&
%{
"type" => "Image",
"url" => [%{"href" => data["image"]["url"]}]
}
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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
capabilities = data["capabilities"] || %{}
accepts_chat_messages = capabilities["acceptsChatMessages"]
data = Transmogrifier.maybe_fix_user_object(data)
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is_discoverable = data["discoverable"] || false
invisible = data["invisible"] || false
actor_type = data["type"] || "Person"
public_key =
if is_map(data["publicKey"]) && is_binary(data["publicKey"]["publicKeyPem"]) do
data["publicKey"]["publicKeyPem"]
else
nil
end
shared_inbox =
if is_map(data["endpoints"]) && is_binary(data["endpoints"]["sharedInbox"]) do
data["endpoints"]["sharedInbox"]
else
nil
end
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user_data = %{
ap_id: data["id"],
uri: get_actor_url(data["url"]),
ap_enabled: true,
banner: banner,
fields: fields,
emoji: emojis,
is_locked: is_locked,
is_discoverable: is_discoverable,
invisible: invisible,
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avatar: avatar,
name: data["name"],
follower_address: data["followers"],
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following_address: data["following"],
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,
accepts_chat_messages: accepts_chat_messages
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}
# nickname can be nil because of virtual actors
if data["preferredUsername"] do
Map.put(
user_data,
:nickname,
"#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}"
)
else
Map.put(user_data, :nickname, nil)
end
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end
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}
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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
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defp collection_private(_data), do: {:ok, true}
def user_data_from_user_object(data) do
with {:ok, data} <- MRF.filter(data) do
{:ok, object_to_user_data(data)}
else
e -> {:error, e}
end
end
def fetch_and_prepare_user_from_ap_id(ap_id) do
with {:ok, data} <- Fetcher.fetch_and_contain_remote_object_from_id(ap_id),
{:ok, data} <- user_data_from_user_object(data) do
{:ok, maybe_update_follow_information(data)}
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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}
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{:error, {:reject, reason} = e} ->
Logger.info("Rejected user #{ap_id}: #{inspect(reason)}")
{:error, e}
{:error, e} ->
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Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
{:error, e}
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end
end
def maybe_handle_clashing_nickname(data) do
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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(
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"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 make_user_from_ap_id(ap_id) do
user = User.get_cached_by_ap_id(ap_id)
if user && !User.ap_enabled?(user) do
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Transmogrifier.upgrade_user_from_ap_id(ap_id)
else
with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
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
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end
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end
end
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def make_user_from_nickname(nickname) do
with {:ok, %{"ap_id" => ap_id}} when not is_nil(ap_id) <- WebFinger.finger(nickname) do
make_user_from_ap_id(ap_id)
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else
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_e -> {:error, "No AP id in WebFinger"}
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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
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contain_broken_threads(activity, user)
end
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def fetch_direct_messages_query do
Activity
|> restrict_type(%{type: "Create"})
|> restrict_visibility(%{visibility: "direct"})
|> order_by([activity], asc: activity.id)
end
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end