# Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Notification do
use Ecto.Schema
+ alias Ecto.Multi
alias Pleroma.Activity
+ alias Pleroma.FollowingRelationship
+ alias Pleroma.Marker
alias Pleroma.Notification
alias Pleroma.Object
alias Pleroma.Pagination
alias Pleroma.Repo
alias Pleroma.ThreadMute
alias Pleroma.User
+ alias Pleroma.Web.CommonAPI
alias Pleroma.Web.CommonAPI.Utils
alias Pleroma.Web.Push
alias Pleroma.Web.Streamer
schema "notifications" do
field(:seen, :boolean, default: false)
+ # This is an enum type in the database. If you add a new notification type,
+ # remember to add a migration to add it to the `notifications_type` enum
+ # as well.
+ field(:type, :string)
belongs_to(:user, User, type: FlakeId.Ecto.CompatType)
belongs_to(:activity, Activity, type: FlakeId.Ecto.CompatType)
timestamps()
end
+ def update_notification_type(user, activity) do
+ with %__MODULE__{} = notification <-
+ Repo.get_by(__MODULE__, user_id: user.id, activity_id: activity.id) do
+ type =
+ activity
+ |> type_from_activity()
+
+ notification
+ |> changeset(%{type: type})
+ |> Repo.update()
+ end
+ end
+
+ @spec unread_notifications_count(User.t()) :: integer()
+ def unread_notifications_count(%User{id: user_id}) do
+ from(q in __MODULE__,
+ where: q.user_id == ^user_id and q.seen == false
+ )
+ |> Repo.aggregate(:count, :id)
+ end
+
+ @notification_types ~w{
+ favourite
+ follow
+ follow_request
+ mention
+ move
+ pleroma:chat_mention
+ pleroma:emoji_reaction
+ pleroma:report
+ reblog
+ }
+
def changeset(%Notification{} = notification, attrs) do
notification
- |> cast(attrs, [:seen])
+ |> cast(attrs, [:seen, :type])
+ |> validate_inclusion(:type, @notification_types)
+ end
+
+ @spec last_read_query(User.t()) :: Ecto.Queryable.t()
+ def last_read_query(user) do
+ from(q in Pleroma.Notification,
+ where: q.user_id == ^user.id,
+ where: q.seen == true,
+ select: type(q.id, :string),
+ limit: 1,
+ order_by: [desc: :id]
+ )
end
defp for_user_query_ap_id_opts(user, opts) do
Notification
|> where(user_id: ^user.id)
- |> where(
- [n, a],
- fragment(
- "? not in (SELECT ap_id FROM users WHERE deactivated = 'true')",
- a.actor
- )
- )
|> join(:inner, [n], activity in assoc(n, :activity))
|> join(:left, [n, a], object in Object,
on:
fragment(
- "(?->>'id') = COALESCE((? -> 'object'::text) ->> 'id'::text)",
+ "(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
object.data,
+ a.data,
a.data
)
)
+ |> join(:inner, [_n, a], u in User, on: u.ap_id == a.actor, as: :user_actor)
|> preload([n, a, o], activity: {a, object: o})
+ |> where([user_actor: user_actor], user_actor.is_active)
|> exclude_notification_muted(user, exclude_notification_muted_opts)
|> exclude_blocked(user, exclude_blocked_opts)
+ |> exclude_filtered(user)
|> exclude_visibility(opts)
end
+ # Excludes blocked users and non-followed domain-blocked users
defp exclude_blocked(query, user, opts) do
blocked_ap_ids = opts[:blocked_users_ap_ids] || User.blocked_users_ap_ids(user)
query
|> where([n, a], a.actor not in ^blocked_ap_ids)
- |> where(
- [n, a],
- fragment("substring(? from '.*://([^/]*)')", a.actor) not in ^user.domain_blocks
- )
+ |> FollowingRelationship.keep_following_or_not_domain_blocked(user)
end
defp exclude_notification_muted(query, _, %{@include_muted_option => true}) do
query
|> where([n, a], a.actor not in ^notification_muted_ap_ids)
|> join(:left, [n, a], tm in ThreadMute,
- on: tm.user_id == ^user.id and tm.context == fragment("?->>'context'", a.data)
+ on: tm.user_id == ^user.id and tm.context == fragment("?->>'context'", a.data),
+ as: :thread_mute
)
- |> where([n, a, o, tm], is_nil(tm.user_id))
+ |> where([thread_mute: thread_mute], is_nil(thread_mute.user_id))
+ end
+
+ defp exclude_filtered(query, user) do
+ case Pleroma.Filter.compose_regex(user) do
+ nil ->
+ query
+
+ regex ->
+ from([_n, a, o] in query,
+ where:
+ fragment("not(?->>'content' ~* ?)", o.data, ^regex) or
+ fragment("?->>'actor' = ?", o.data, ^user.ap_id)
+ )
+ end
end
@valid_visibilities ~w[direct unlisted public private]
query
|> join(:left, [n, a], mutated_activity in Pleroma.Activity,
on:
- fragment("?->>'context'", a.data) ==
- fragment("?->>'context'", mutated_activity.data) and
+ fragment(
+ "COALESCE((?->'object')->>'id', ?->>'object')",
+ a.data,
+ a.data
+ ) ==
+ fragment(
+ "COALESCE((?->'object')->>'id', ?->>'object')",
+ mutated_activity.data,
+ mutated_activity.data
+ ) and
fragment("(?->>'type' = 'Like' or ?->>'type' = 'Announce')", a.data, a.data) and
fragment("?->>'type'", mutated_activity.data) == "Create",
as: :mutated_activity
|> Repo.all()
end
- def set_read_up_to(%{id: user_id} = _user, id) do
+ def set_read_up_to(%{id: user_id} = user, id) do
query =
from(
n in Notification,
where: n.user_id == ^user_id,
where: n.id <= ^id,
where: n.seen == false,
- update: [
- set: [
- seen: true,
- updated_at: ^NaiveDateTime.utc_now()
- ]
- ],
# Ideally we would preload object and activities here
# but Ecto does not support preloads in update_all
select: n.id
)
- {_, notification_ids} = Repo.update_all(query, [])
+ {:ok, %{ids: {_, notification_ids}}} =
+ Multi.new()
+ |> Multi.update_all(:ids, query, set: [seen: true, updated_at: NaiveDateTime.utc_now()])
+ |> Marker.multi_set_last_read_id(user, "notifications")
+ |> Repo.transaction()
- Notification
+ for_user_query(user)
|> where([n], n.id in ^notification_ids)
- |> join(:inner, [n], activity in assoc(n, :activity))
- |> join(:left, [n, a], object in Object,
- on:
- fragment(
- "(?->>'id') = COALESCE((? -> 'object'::text) ->> 'id'::text)",
- object.data,
- a.data
- )
- )
- |> preload([n, a, o], activity: {a, object: o})
|> Repo.all()
end
+ @spec read_one(User.t(), String.t()) ::
+ {:ok, Notification.t()} | {:error, Ecto.Changeset.t()} | nil
def read_one(%User{} = user, notification_id) do
with {:ok, %Notification{} = notification} <- get(user, notification_id) do
- notification
- |> changeset(%{seen: true})
- |> Repo.update()
+ Multi.new()
+ |> Multi.update(:update, changeset(notification, %{seen: true}))
+ |> Marker.multi_set_last_read_id(user, "notifications")
+ |> Repo.transaction()
+ |> case do
+ {:ok, %{update: notification}} -> {:ok, notification}
+ {:error, :update, changeset, _} -> {:error, changeset}
+ end
end
end
|> Repo.delete_all()
end
+ def dismiss(%Pleroma.Activity{} = activity) do
+ Notification
+ |> where([n], n.activity_id == ^activity.id)
+ |> Repo.delete_all()
+ |> case do
+ {_, notifications} -> {:ok, notifications}
+ _ -> {:error, "Cannot dismiss notification"}
+ end
+ end
+
def dismiss(%{id: user_id} = _user, id) do
notification = Repo.get(Notification, id)
end
end
- def create_notifications(%Activity{data: %{"to" => _, "type" => "Create"}} = activity) do
- object = Object.normalize(activity)
+ @spec create_notifications(Activity.t(), keyword()) :: {:ok, [Notification.t()] | []}
+ def create_notifications(activity, options \\ [])
+
+ def create_notifications(%Activity{data: %{"to" => _, "type" => "Create"}} = activity, options) do
+ object = Object.normalize(activity, fetch: false)
if object && object.data["type"] == "Answer" do
{:ok, []}
else
- do_create_notifications(activity)
+ do_create_notifications(activity, options)
end
end
- def create_notifications(%Activity{data: %{"type" => type}} = activity)
- when type in ["Like", "Announce", "Follow", "Move", "EmojiReact"] do
- do_create_notifications(activity)
+ def create_notifications(%Activity{data: %{"type" => type}} = activity, options)
+ when type in ["Follow", "Like", "Announce", "Move", "EmojiReact", "Flag"] do
+ do_create_notifications(activity, options)
end
- def create_notifications(_), do: {:ok, []}
+ def create_notifications(_, _), do: {:ok, []}
+
+ defp do_create_notifications(%Activity{} = activity, options) do
+ do_send = Keyword.get(options, :do_send, true)
- defp do_create_notifications(%Activity{} = activity) do
{enabled_receivers, disabled_receivers} = get_notified_from_activity(activity)
potential_receivers = enabled_receivers ++ disabled_receivers
notifications =
Enum.map(potential_receivers, fn user ->
- do_send = user in enabled_receivers
+ do_send = do_send && user in enabled_receivers
create_notification(activity, user, do_send)
end)
+ |> Enum.reject(&is_nil/1)
{:ok, notifications}
end
+ defp type_from_activity(%{data: %{"type" => type}} = activity) do
+ case type do
+ "Follow" ->
+ if Activity.follow_accepted?(activity) do
+ "follow"
+ else
+ "follow_request"
+ end
+
+ "Announce" ->
+ "reblog"
+
+ "Like" ->
+ "favourite"
+
+ "Move" ->
+ "move"
+
+ "EmojiReact" ->
+ "pleroma:emoji_reaction"
+
+ "Flag" ->
+ "pleroma:report"
+
+ # Compatibility with old reactions
+ "EmojiReaction" ->
+ "pleroma:emoji_reaction"
+
+ "Create" ->
+ activity
+ |> type_from_activity_object()
+
+ t ->
+ raise "No notification type for activity type #{t}"
+ end
+ end
+
+ defp type_from_activity_object(%{data: %{"type" => "Create", "object" => %{}}}), do: "mention"
+
+ defp type_from_activity_object(%{data: %{"type" => "Create"}} = activity) do
+ object = Object.get_by_ap_id(activity.data["object"])
+
+ case object && object.data["type"] do
+ "ChatMessage" -> "pleroma:chat_mention"
+ _ -> "mention"
+ end
+ end
+
# TODO move to sql, too.
def create_notification(%Activity{} = activity, %User{} = user, do_send \\ true) do
unless skip?(activity, user) do
- notification = %Notification{user_id: user.id, activity: activity}
- {:ok, notification} = Repo.insert(notification)
+ {:ok, %{notification: notification}} =
+ Multi.new()
+ |> Multi.insert(:notification, %Notification{
+ user_id: user.id,
+ activity: activity,
+ seen: mark_as_read?(activity, user),
+ type: type_from_activity(activity)
+ })
+ |> Marker.multi_set_last_read_id(user, "notifications")
+ |> Repo.transaction()
if do_send do
Streamer.stream(["user", "user:notification"], notification)
@doc """
Returns a tuple with 2 elements:
- {enabled notification receivers, currently disabled receivers (blocking / [thread] muting)}
+ {notification-enabled receivers, currently disabled receivers (blocking / [thread] muting)}
+
+ NOTE: might be called for FAKE Activities, see ActivityPub.Utils.get_notified_from_object/1
"""
+ @spec get_notified_from_activity(Activity.t(), boolean()) :: {list(User.t()), list(User.t())}
def get_notified_from_activity(activity, local_only \\ true)
def get_notified_from_activity(%Activity{data: %{"type" => type}} = activity, local_only)
- when type in ["Create", "Like", "Announce", "Follow", "Move", "EmojiReact"] do
- potential_receiver_ap_ids =
- []
- |> Utils.maybe_notify_to_recipients(activity)
- |> Utils.maybe_notify_mentioned_recipients(activity)
- |> Utils.maybe_notify_subscribers(activity)
- |> Utils.maybe_notify_followers(activity)
- |> Enum.uniq()
+ when type in ["Create", "Like", "Announce", "Follow", "Move", "EmojiReact", "Flag"] do
+ potential_receiver_ap_ids = get_potential_receiver_ap_ids(activity)
+
+ potential_receivers =
+ User.get_users_from_set(potential_receiver_ap_ids, local_only: local_only)
- # Since even subscribers and followers can mute / thread-mute, filtering all above AP IDs
notification_enabled_ap_ids =
potential_receiver_ap_ids
- |> exclude_relation_restricting_ap_ids(activity)
+ |> exclude_domain_blocker_ap_ids(activity, potential_receivers)
+ |> exclude_relationship_restricted_ap_ids(activity)
|> exclude_thread_muter_ap_ids(activity)
- potential_receivers =
- potential_receiver_ap_ids
- |> Enum.uniq()
- |> User.get_users_from_set(local_only)
-
notification_enabled_users =
Enum.filter(potential_receivers, fn u -> u.ap_id in notification_enabled_ap_ids end)
def get_notified_from_activity(_, _local_only), do: {[], []}
+ # For some activities, only notify the author of the object
+ def get_potential_receiver_ap_ids(%{data: %{"type" => type, "object" => object_id}})
+ when type in ~w{Like Announce EmojiReact} do
+ case Object.get_cached_by_ap_id(object_id) do
+ %Object{data: %{"actor" => actor}} ->
+ [actor]
+
+ _ ->
+ []
+ end
+ end
+
+ def get_potential_receiver_ap_ids(%{data: %{"type" => "Follow", "object" => object_id}}) do
+ [object_id]
+ end
+
+ def get_potential_receiver_ap_ids(%{data: %{"type" => "Flag", "actor" => actor}}) do
+ (User.all_superusers() |> Enum.map(fn user -> user.ap_id end)) -- [actor]
+ end
+
+ def get_potential_receiver_ap_ids(activity) do
+ []
+ |> Utils.maybe_notify_to_recipients(activity)
+ |> Utils.maybe_notify_mentioned_recipients(activity)
+ |> Utils.maybe_notify_subscribers(activity)
+ |> Utils.maybe_notify_followers(activity)
+ |> Enum.uniq()
+ end
+
+ @doc "Filters out AP IDs domain-blocking and not following the activity's actor"
+ def exclude_domain_blocker_ap_ids(ap_ids, activity, preloaded_users \\ [])
+
+ def exclude_domain_blocker_ap_ids([], _activity, _preloaded_users), do: []
+
+ def exclude_domain_blocker_ap_ids(ap_ids, %Activity{} = activity, preloaded_users) do
+ activity_actor_domain = activity.actor && URI.parse(activity.actor).host
+
+ users =
+ ap_ids
+ |> Enum.map(fn ap_id ->
+ Enum.find(preloaded_users, &(&1.ap_id == ap_id)) ||
+ User.get_cached_by_ap_id(ap_id)
+ end)
+ |> Enum.filter(& &1)
+
+ domain_blocker_ap_ids = for u <- users, activity_actor_domain in u.domain_blocks, do: u.ap_id
+
+ domain_blocker_follower_ap_ids =
+ if Enum.any?(domain_blocker_ap_ids) do
+ activity
+ |> Activity.user_actor()
+ |> FollowingRelationship.followers_ap_ids(domain_blocker_ap_ids)
+ else
+ []
+ end
+
+ ap_ids
+ |> Kernel.--(domain_blocker_ap_ids)
+ |> Kernel.++(domain_blocker_follower_ap_ids)
+ end
+
@doc "Filters out AP IDs of users basing on their relationships with activity actor user"
- def exclude_relation_restricting_ap_ids([], _activity), do: []
+ def exclude_relationship_restricted_ap_ids([], _activity), do: []
- def exclude_relation_restricting_ap_ids(ap_ids, %Activity{} = activity) do
- relation_restricted_ap_ids =
+ def exclude_relationship_restricted_ap_ids(ap_ids, %Activity{} = activity) do
+ relationship_restricted_ap_ids =
activity
|> Activity.user_actor()
|> User.incoming_relationships_ungrouped_ap_ids([
:notification_mute
])
- Enum.uniq(ap_ids) -- relation_restricted_ap_ids
+ Enum.uniq(ap_ids) -- relationship_restricted_ap_ids
end
@doc "Filters out AP IDs of users who mute activity thread"
def skip?(%Activity{} = activity, %User{} = user) do
[
:self,
- :followers,
- :follows,
- :non_followers,
- :non_follows,
- :recently_followed
+ :invisible,
+ :block_from_strangers,
+ :recently_followed,
+ :filtered
]
|> Enum.find(&skip?(&1, activity, user))
end
activity.data["actor"] == user.ap_id
end
- def skip?(
- :followers,
- %Activity{} = activity,
- %User{notification_settings: %{followers: false}} = user
- ) do
+ def skip?(:invisible, %Activity{} = activity, _) do
actor = activity.data["actor"]
- follower = User.get_cached_by_ap_id(actor)
- User.following?(follower, user)
+ user = User.get_cached_by_ap_id(actor)
+ User.invisible?(user)
end
def skip?(
- :non_followers,
+ :block_from_strangers,
%Activity{} = activity,
- %User{notification_settings: %{non_followers: false}} = user
+ %User{notification_settings: %{block_from_strangers: true}} = user
) do
actor = activity.data["actor"]
follower = User.get_cached_by_ap_id(actor)
!User.following?(follower, user)
end
- def skip?(
- :follows,
- %Activity{} = activity,
- %User{notification_settings: %{follows: false}} = user
- ) do
- actor = activity.data["actor"]
- followed = User.get_cached_by_ap_id(actor)
- User.following?(user, followed)
- end
-
- def skip?(
- :non_follows,
- %Activity{} = activity,
- %User{notification_settings: %{non_follows: false}} = user
- ) do
- actor = activity.data["actor"]
- followed = User.get_cached_by_ap_id(actor)
- !User.following?(user, followed)
- end
-
# To do: consider defining recency in hours and checking FollowingRelationship with a single SQL
def skip?(:recently_followed, %Activity{data: %{"type" => "Follow"}} = activity, %User{} = user) do
actor = activity.data["actor"]
end)
end
+ def skip?(:filtered, %{data: %{"type" => type}}, _) when type in ["Follow", "Move"], do: false
+
+ def skip?(:filtered, activity, user) do
+ object = Object.normalize(activity, fetch: false)
+
+ cond do
+ is_nil(object) ->
+ false
+
+ object.data["actor"] == user.ap_id ->
+ false
+
+ not is_nil(regex = Pleroma.Filter.compose_regex(user, :re)) ->
+ Regex.match?(regex, object.data["content"])
+
+ true ->
+ false
+ end
+ end
+
def skip?(_, _, _), do: false
+
+ def mark_as_read?(activity, target_user) do
+ user = Activity.user_actor(activity)
+ User.mutes_user?(target_user, user) || CommonAPI.thread_muted?(target_user, activity)
+ end
+
+ def for_user_and_activity(user, activity) do
+ from(n in __MODULE__,
+ where: n.user_id == ^user.id,
+ where: n.activity_id == ^activity.id
+ )
+ |> Repo.one()
+ end
+
+ @spec mark_context_as_read(User.t(), String.t()) :: {integer(), nil | [term()]}
+ def mark_context_as_read(%User{id: id}, context) do
+ from(
+ n in Notification,
+ join: a in assoc(n, :activity),
+ where: n.user_id == ^id,
+ where: n.seen == false,
+ where: fragment("?->>'context'", a.data) == ^context
+ )
+ |> Repo.update_all(set: [seen: true])
+ end
end