akkoma/lib/pleroma/web/common_api.ex
2021-12-12 19:31:47 +00:00

605 lines
20 KiB
Elixir

# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.CommonAPI do
alias Pleroma.Activity
alias Pleroma.Conversation.Participation
alias Pleroma.Formatter
alias Pleroma.Object
alias Pleroma.ThreadMute
alias Pleroma.User
alias Pleroma.UserRelationship
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.Builder
alias Pleroma.Web.ActivityPub.Pipeline
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.ActivityPub.Visibility
alias Pleroma.Web.CommonAPI.ActivityDraft
import Pleroma.Web.Gettext
import Pleroma.Web.CommonAPI.Utils
require Pleroma.Constants
require Logger
def block(blocker, blocked) do
with {:ok, block_data, _} <- Builder.block(blocker, blocked),
{:ok, block, _} <- Pipeline.common_pipeline(block_data, local: true) do
{:ok, block}
end
end
def post_chat_message(%User{} = user, %User{} = recipient, content, opts \\ []) do
with maybe_attachment <- opts[:media_id] && Object.get_by_id(opts[:media_id]),
:ok <- validate_chat_content_length(content, !!maybe_attachment),
{_, {:ok, chat_message_data, _meta}} <-
{:build_object,
Builder.chat_message(
user,
recipient.ap_id,
content |> format_chat_content,
attachment: maybe_attachment
)},
{_, {:ok, create_activity_data, _meta}} <-
{:build_create_activity, Builder.create(user, chat_message_data, [recipient.ap_id])},
{_, {:ok, %Activity{} = activity, _meta}} <-
{:common_pipeline,
Pipeline.common_pipeline(create_activity_data,
local: true,
idempotency_key: opts[:idempotency_key]
)} do
{:ok, activity}
else
{:common_pipeline, {:reject, _} = e} -> e
e -> e
end
end
defp format_chat_content(nil), do: nil
defp format_chat_content(content) do
{text, _, _} =
content
|> Formatter.html_escape("text/plain")
|> Formatter.linkify()
|> (fn {text, mentions, tags} ->
{String.replace(text, ~r/\r?\n/, "<br>"), mentions, tags}
end).()
text
end
defp validate_chat_content_length(_, true), do: :ok
defp validate_chat_content_length(nil, false), do: {:error, :no_content}
defp validate_chat_content_length(content, _) do
if String.length(content) <= Pleroma.Config.get([:instance, :chat_limit]) do
:ok
else
{:error, :content_too_long}
end
end
def unblock(blocker, blocked) do
with {_, %Activity{} = block} <- {:fetch_block, Utils.fetch_latest_block(blocker, blocked)},
{:ok, unblock_data, _} <- Builder.undo(blocker, block),
{:ok, unblock, _} <- Pipeline.common_pipeline(unblock_data, local: true) do
{:ok, unblock}
else
{:fetch_block, nil} ->
if User.blocks?(blocker, blocked) do
User.unblock(blocker, blocked)
{:ok, :no_activity}
else
{:error, :not_blocking}
end
e ->
e
end
end
def follow(follower, followed) do
timeout = Pleroma.Config.get([:activitypub, :follow_handshake_timeout])
with {:ok, follow_data, _} <- Builder.follow(follower, followed),
{:ok, activity, _} <- Pipeline.common_pipeline(follow_data, local: true),
{:ok, follower, followed} <- User.wait_and_refresh(timeout, follower, followed) do
if activity.data["state"] == "reject" do
{:error, :rejected}
else
{:ok, follower, followed, activity}
end
end
end
def unfollow(follower, unfollowed) do
with {:ok, follower, _follow_activity} <- User.unfollow(follower, unfollowed),
{:ok, _activity} <- ActivityPub.unfollow(follower, unfollowed),
{:ok, _subscription} <- User.unsubscribe(follower, unfollowed) do
{:ok, follower}
end
end
def accept_follow_request(follower, followed) do
with %Activity{} = follow_activity <- Utils.fetch_latest_follow(follower, followed),
{:ok, accept_data, _} <- Builder.accept(followed, follow_activity),
{:ok, _activity, _} <- Pipeline.common_pipeline(accept_data, local: true) do
{:ok, follower}
end
end
def reject_follow_request(follower, followed) do
with %Activity{} = follow_activity <- Utils.fetch_latest_follow(follower, followed),
{:ok, reject_data, _} <- Builder.reject(followed, follow_activity),
{:ok, _activity, _} <- Pipeline.common_pipeline(reject_data, local: true) do
{:ok, follower}
end
end
def delete(activity_id, user) do
with {_, %Activity{data: %{"object" => _, "type" => "Create"}} = activity} <-
{:find_activity, Activity.get_by_id(activity_id)},
{_, %Object{} = object, _} <-
{:find_object, Object.normalize(activity, fetch: false), activity},
true <- User.superuser?(user) || user.ap_id == object.data["actor"],
{:ok, delete_data, _} <- Builder.delete(user, object.data["id"]),
{:ok, delete, _} <- Pipeline.common_pipeline(delete_data, local: true) do
{:ok, delete}
else
{:find_activity, _} ->
{:error, :not_found}
{:find_object, nil, %Activity{data: %{"actor" => actor, "object" => object}}} ->
# We have the create activity, but not the object, it was probably pruned.
# Insert a tombstone and try again
with {:ok, tombstone_data, _} <- Builder.tombstone(actor, object),
{:ok, _tombstone} <- Object.create(tombstone_data) do
delete(activity_id, user)
else
_ ->
Logger.error(
"Could not insert tombstone for missing object on deletion. Object is #{object}."
)
{:error, dgettext("errors", "Could not delete")}
end
_ ->
{:error, dgettext("errors", "Could not delete")}
end
end
def repeat(id, user, params \\ %{}) do
with %Activity{data: %{"type" => "Create"}} = activity <- Activity.get_by_id(id),
object = %Object{} <- Object.normalize(activity, fetch: false),
{_, nil} <- {:existing_announce, Utils.get_existing_announce(user.ap_id, object)},
public = public_announce?(object, params),
{:ok, announce, _} <- Builder.announce(user, object, public: public),
{:ok, activity, _} <- Pipeline.common_pipeline(announce, local: true) do
{:ok, activity}
else
{:existing_announce, %Activity{} = announce} ->
{:ok, announce}
_ ->
{:error, :not_found}
end
end
def unrepeat(id, user) do
with {_, %Activity{data: %{"type" => "Create"}} = activity} <-
{:find_activity, Activity.get_by_id(id)},
%Object{} = note <- Object.normalize(activity, fetch: false),
%Activity{} = announce <- Utils.get_existing_announce(user.ap_id, note),
{:ok, undo, _} <- Builder.undo(user, announce),
{:ok, activity, _} <- Pipeline.common_pipeline(undo, local: true) do
{:ok, activity}
else
{:find_activity, _} -> {:error, :not_found}
_ -> {:error, dgettext("errors", "Could not unrepeat")}
end
end
@spec favorite(User.t(), binary()) :: {:ok, Activity.t() | :already_liked} | {:error, any()}
def favorite(%User{} = user, id) do
case favorite_helper(user, id) do
{:ok, _} = res ->
res
{:error, :not_found} = res ->
res
{:error, e} ->
Logger.error("Could not favorite #{id}. Error: #{inspect(e, pretty: true)}")
{:error, dgettext("errors", "Could not favorite")}
end
end
def favorite_helper(user, id) do
with {_, %Activity{object: object}} <- {:find_object, Activity.get_by_id_with_object(id)},
{_, {:ok, like_object, meta}} <- {:build_object, Builder.like(user, object)},
{_, {:ok, %Activity{} = activity, _meta}} <-
{:common_pipeline,
Pipeline.common_pipeline(like_object, Keyword.put(meta, :local, true))} do
{:ok, activity}
else
{:find_object, _} ->
{:error, :not_found}
{:common_pipeline, {:error, {:validate, {:error, changeset}}}} = e ->
if {:object, {"already liked by this actor", []}} in changeset.errors do
{:ok, :already_liked}
else
{:error, e}
end
e ->
{:error, e}
end
end
def unfavorite(id, user) do
with {_, %Activity{data: %{"type" => "Create"}} = activity} <-
{:find_activity, Activity.get_by_id(id)},
%Object{} = note <- Object.normalize(activity, fetch: false),
%Activity{} = like <- Utils.get_existing_like(user.ap_id, note),
{:ok, undo, _} <- Builder.undo(user, like),
{:ok, activity, _} <- Pipeline.common_pipeline(undo, local: true) do
{:ok, activity}
else
{:find_activity, _} -> {:error, :not_found}
_ -> {:error, dgettext("errors", "Could not unfavorite")}
end
end
def react_with_emoji(id, user, emoji) do
with %Activity{} = activity <- Activity.get_by_id(id),
object <- Object.normalize(activity, fetch: false),
{:ok, emoji_react, _} <- Builder.emoji_react(user, object, emoji),
{:ok, activity, _} <- Pipeline.common_pipeline(emoji_react, local: true) do
{:ok, activity}
else
_ ->
{:error, dgettext("errors", "Could not add reaction emoji")}
end
end
def unreact_with_emoji(id, user, emoji) do
with %Activity{} = reaction_activity <- Utils.get_latest_reaction(id, user, emoji),
{:ok, undo, _} <- Builder.undo(user, reaction_activity),
{:ok, activity, _} <- Pipeline.common_pipeline(undo, local: true) do
{:ok, activity}
else
_ ->
{:error, dgettext("errors", "Could not remove reaction emoji")}
end
end
def vote(user, %{data: %{"type" => "Question"}} = object, choices) do
with :ok <- validate_not_author(object, user),
:ok <- validate_existing_votes(user, object),
{:ok, options, choices} <- normalize_and_validate_choices(choices, object) do
answer_activities =
Enum.map(choices, fn index ->
{:ok, answer_object, _meta} =
Builder.answer(user, object, Enum.at(options, index)["name"])
{:ok, activity_data, _meta} = Builder.create(user, answer_object, [])
{:ok, activity, _meta} =
activity_data
|> Map.put("cc", answer_object["cc"])
|> Map.put("context", answer_object["context"])
|> Pipeline.common_pipeline(local: true)
# TODO: Do preload of Pleroma.Object in Pipeline
Activity.normalize(activity.data)
end)
object = Object.get_cached_by_ap_id(object.data["id"])
{:ok, answer_activities, object}
end
end
defp validate_not_author(%{data: %{"actor" => ap_id}}, %{ap_id: ap_id}),
do: {:error, dgettext("errors", "Poll's author can't vote")}
defp validate_not_author(_, _), do: :ok
defp validate_existing_votes(%{ap_id: ap_id}, object) do
if Utils.get_existing_votes(ap_id, object) == [] do
:ok
else
{:error, dgettext("errors", "Already voted")}
end
end
defp get_options_and_max_count(%{data: %{"anyOf" => any_of}})
when is_list(any_of) and any_of != [],
do: {any_of, Enum.count(any_of)}
defp get_options_and_max_count(%{data: %{"oneOf" => one_of}})
when is_list(one_of) and one_of != [],
do: {one_of, 1}
defp normalize_and_validate_choices(choices, object) do
choices = Enum.map(choices, fn i -> if is_binary(i), do: String.to_integer(i), else: i end)
{options, max_count} = get_options_and_max_count(object)
count = Enum.count(options)
with {_, true} <- {:valid_choice, Enum.all?(choices, &(&1 < count))},
{_, true} <- {:count_check, Enum.count(choices) <= max_count} do
{:ok, options, choices}
else
{:valid_choice, _} -> {:error, dgettext("errors", "Invalid indices")}
{:count_check, _} -> {:error, dgettext("errors", "Too many choices")}
end
end
def public_announce?(_, %{visibility: visibility})
when visibility in ~w{public unlisted private direct},
do: visibility in ~w(public unlisted)
def public_announce?(object, _) do
Visibility.is_public?(object)
end
def get_visibility(_, _, %Participation{}), do: {"direct", "direct"}
def get_visibility(%{visibility: visibility}, in_reply_to, _)
when visibility in ~w{public local unlisted private direct},
do: {visibility, get_replied_to_visibility(in_reply_to)}
def get_visibility(%{visibility: "list:" <> list_id}, in_reply_to, _) do
visibility = {:list, String.to_integer(list_id)}
{visibility, get_replied_to_visibility(in_reply_to)}
end
def get_visibility(_, in_reply_to, _) when not is_nil(in_reply_to) do
visibility = get_replied_to_visibility(in_reply_to)
{visibility, visibility}
end
def get_visibility(_, in_reply_to, _), do: {"public", get_replied_to_visibility(in_reply_to)}
def get_replied_to_visibility(nil), do: nil
def get_replied_to_visibility(activity) do
with %Object{} = object <- Object.normalize(activity, fetch: false) do
Visibility.get_visibility(object)
end
end
def check_expiry_date({:ok, nil} = res), do: res
def check_expiry_date({:ok, in_seconds}) do
expiry = DateTime.add(DateTime.utc_now(), in_seconds)
if Pleroma.Workers.PurgeExpiredActivity.expires_late_enough?(expiry) do
{:ok, expiry}
else
{:error, "Expiry date is too soon"}
end
end
def check_expiry_date(expiry_str) do
Ecto.Type.cast(:integer, expiry_str)
|> check_expiry_date()
end
def listen(user, data) do
with {:ok, draft} <- ActivityDraft.listen(user, data) do
ActivityPub.listen(draft.changes)
end
end
def post(user, %{status: _} = data) do
with {:ok, draft} <- ActivityDraft.create(user, data) do
activity = ActivityPub.create(draft.changes, draft.preview?)
unless draft.preview? do
Pleroma.Elasticsearch.maybe_put_into_elasticsearch(activity)
end
activity
end
end
@spec pin(String.t(), User.t()) :: {:ok, Activity.t()} | {:error, term()}
def pin(id, %User{} = user) do
with %Activity{} = activity <- create_activity_by_id(id),
true <- activity_belongs_to_actor(activity, user.ap_id),
true <- object_type_is_allowed_for_pin(activity.object),
true <- activity_is_public(activity),
{:ok, pin_data, _} <- Builder.pin(user, activity.object),
{:ok, _pin, _} <-
Pipeline.common_pipeline(pin_data,
local: true,
activity_id: id
) do
{:ok, activity}
else
{:error, {:side_effects, error}} -> error
error -> error
end
end
defp create_activity_by_id(id) do
with nil <- Activity.create_by_id_with_object(id) do
{:error, :not_found}
end
end
defp activity_belongs_to_actor(%{actor: actor}, actor), do: true
defp activity_belongs_to_actor(_, _), do: {:error, :ownership_error}
defp object_type_is_allowed_for_pin(%{data: %{"type" => type}}) do
with false <- type in ["Note", "Article", "Question"] do
{:error, :not_allowed}
end
end
defp activity_is_public(activity) do
with false <- Visibility.is_public?(activity) do
{:error, :visibility_error}
end
end
@spec unpin(String.t(), User.t()) :: {:ok, User.t()} | {:error, term()}
def unpin(id, user) do
with %Activity{} = activity <- create_activity_by_id(id),
{:ok, unpin_data, _} <- Builder.unpin(user, activity.object),
{:ok, _unpin, _} <-
Pipeline.common_pipeline(unpin_data,
local: true,
activity_id: activity.id,
expires_at: activity.data["expires_at"],
featured_address: user.featured_address
) do
{:ok, activity}
end
end
def add_mute(user, activity, params \\ %{}) do
expires_in = Map.get(params, :expires_in, 0)
with {:ok, _} <- ThreadMute.add_mute(user.id, activity.data["context"]),
_ <- Pleroma.Notification.mark_context_as_read(user, activity.data["context"]) do
if expires_in > 0 do
Pleroma.Workers.MuteExpireWorker.enqueue(
"unmute_conversation",
%{"user_id" => user.id, "activity_id" => activity.id},
schedule_in: expires_in
)
end
{:ok, activity}
else
{:error, _} -> {:error, dgettext("errors", "conversation is already muted")}
end
end
def remove_mute(%User{} = user, %Activity{} = activity) do
ThreadMute.remove_mute(user.id, activity.data["context"])
{:ok, activity}
end
def remove_mute(user_id, activity_id) do
with {:user, %User{} = user} <- {:user, User.get_by_id(user_id)},
{:activity, %Activity{} = activity} <- {:activity, Activity.get_by_id(activity_id)} do
remove_mute(user, activity)
else
{what, result} = error ->
Logger.warn(
"CommonAPI.remove_mute/2 failed. #{what}: #{result}, user_id: #{user_id}, activity_id: #{activity_id}"
)
{:error, error}
end
end
def thread_muted?(%User{id: user_id}, %{data: %{"context" => context}})
when is_binary(context) do
ThreadMute.exists?(user_id, context)
end
def thread_muted?(_, _), do: false
def report(user, data) do
with {:ok, account} <- get_reported_account(data.account_id),
{:ok, {content_html, _, _}} <- make_report_content_html(data[:comment]),
{:ok, statuses} <- get_report_statuses(account, data) do
ActivityPub.flag(%{
context: Utils.generate_context_id(),
actor: user,
account: account,
statuses: statuses,
content: content_html,
forward: Map.get(data, :forward, false)
})
end
end
defp get_reported_account(account_id) do
case User.get_cached_by_id(account_id) do
%User{} = account -> {:ok, account}
_ -> {:error, dgettext("errors", "Account not found")}
end
end
def update_report_state(activity_ids, state) when is_list(activity_ids) do
case Utils.update_report_state(activity_ids, state) do
:ok -> {:ok, activity_ids}
_ -> {:error, dgettext("errors", "Could not update state")}
end
end
def update_report_state(activity_id, state) do
with %Activity{} = activity <- Activity.get_by_id(activity_id) do
Utils.update_report_state(activity, state)
else
nil -> {:error, :not_found}
_ -> {:error, dgettext("errors", "Could not update state")}
end
end
def update_activity_scope(activity_id, opts \\ %{}) do
with %Activity{} = activity <- Activity.get_by_id_with_object(activity_id),
{:ok, activity} <- toggle_sensitive(activity, opts) do
set_visibility(activity, opts)
else
nil -> {:error, :not_found}
{:error, reason} -> {:error, reason}
end
end
defp toggle_sensitive(activity, %{sensitive: sensitive}) when sensitive in ~w(true false) do
toggle_sensitive(activity, %{sensitive: String.to_existing_atom(sensitive)})
end
defp toggle_sensitive(%Activity{object: object} = activity, %{sensitive: sensitive})
when is_boolean(sensitive) do
new_data = Map.put(object.data, "sensitive", sensitive)
{:ok, object} =
object
|> Object.change(%{data: new_data})
|> Object.update_and_set_cache()
{:ok, Map.put(activity, :object, object)}
end
defp toggle_sensitive(activity, _), do: {:ok, activity}
defp set_visibility(activity, %{visibility: visibility}) do
Utils.update_activity_visibility(activity, visibility)
end
defp set_visibility(activity, _), do: {:ok, activity}
def hide_reblogs(%User{} = user, %User{} = target) do
UserRelationship.create_reblog_mute(user, target)
end
def show_reblogs(%User{} = user, %User{} = target) do
UserRelationship.delete_reblog_mute(user, target)
end
def get_user(ap_id, fake_record_fallback \\ true) do
cond do
user = User.get_cached_by_ap_id(ap_id) ->
user
user = User.get_by_guessed_nickname(ap_id) ->
user
fake_record_fallback ->
# TODO: refactor (fake records is never a good idea)
User.error_user(ap_id)
true ->
nil
end
end
end