+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
defmodule Pleroma.Web.ActivityPub.ActivityPub do
- alias Pleroma.{Activity, Repo, Object, Upload, User, Notification}
+ alias Pleroma.Activity
+ alias Pleroma.Instances
+ alias Pleroma.Notification
+ alias Pleroma.Object
alias Pleroma.Object.Fetcher
- alias Pleroma.Web.ActivityPub.{Transmogrifier, MRF}
- alias Pleroma.Web.WebFinger
+ 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.Federator
- alias Pleroma.Web.OStatus
+ alias Pleroma.Web.WebFinger
+
import Ecto.Query
import Pleroma.Web.ActivityPub.Utils
+ import Pleroma.Web.ActivityPub.Visibility
+
require Logger
@httpoison Application.get_env(:pleroma, :httpoison)
defp get_recipients(%{"type" => "Announce"} = data) do
to = data["to"] || []
cc = data["cc"] || []
- recipients = to ++ cc
actor = User.get_cached_by_ap_id(data["actor"])
- recipients
- |> Enum.filter(fn recipient ->
- case User.get_cached_by_ap_id(recipient) do
- nil ->
- true
+ recipients =
+ (to ++ cc)
+ |> Enum.filter(fn recipient ->
+ case User.get_cached_by_ap_id(recipient) do
+ nil ->
+ true
+
+ user ->
+ User.following?(user, actor)
+ end
+ end)
- user ->
- User.following?(user, actor)
- end
- end)
+ {recipients, to, cc}
+ end
+ defp get_recipients(%{"type" => "Create"} = data) do
+ to = data["to"] || []
+ cc = data["cc"] || []
+ actor = data["actor"] || []
+ recipients = (to ++ cc ++ [actor]) |> Enum.uniq()
{recipients, to, cc}
end
end
end
- def insert(map, local \\ true) when is_map(map) do
+ defp check_remote_limit(%{"object" => %{"content" => content}}) when not is_nil(content) do
+ limit = Pleroma.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 increase_replies_count_if_reply(%{
+ "object" => %{"inReplyTo" => reply_ap_id} = object,
+ "type" => "Create"
+ }) do
+ if is_public?(object) do
+ Activity.increase_replies_count(reply_ap_id)
+ Object.increase_replies_count(reply_ap_id)
+ end
+ end
+
+ def increase_replies_count_if_reply(_create_data), do: :noop
+
+ def decrease_replies_count_if_reply(%Object{
+ data: %{"inReplyTo" => reply_ap_id} = object
+ }) do
+ if is_public?(object) do
+ Activity.decrease_replies_count(reply_ap_id)
+ Object.decrease_replies_count(reply_ap_id)
+ end
+ end
+
+ def decrease_replies_count_if_reply(_object), do: :noop
+
+ def insert(map, local \\ true, fake \\ false) when is_map(map) do
with nil <- Activity.normalize(map),
- map <- lazy_put_activity_defaults(map),
+ map <- lazy_put_activity_defaults(map, fake),
:ok <- check_actor_is_active(map["actor"]),
+ {_, true} <- {:remote_limit_error, check_remote_limit(map)},
{:ok, map} <- MRF.filter(map),
- {:ok, map} <- insert_full_object(map) do
- {recipients, _, _} = get_recipients(map)
-
+ {recipients, _, _} = get_recipients(map),
+ {:fake, false, map, recipients} <- {:fake, fake, map, recipients},
+ {:ok, map, object} <- insert_full_object(map) do
{:ok, activity} =
Repo.insert(%Activity{
data: map,
recipients: recipients
})
+ # Splice in the child object if we have one.
+ activity =
+ if !is_nil(object) do
+ Map.put(activity, :object, object)
+ else
+ activity
+ end
+
+ Task.start(fn ->
+ Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)
+ end)
+
Notification.create_notifications(activity)
stream_out(activity)
{:ok, activity}
else
- %Activity{} = activity -> {:ok, activity}
- error -> {:error, error}
+ %Activity{} = activity ->
+ {:ok, activity}
+
+ {: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}
+
+ error ->
+ {:error, error}
end
end
if activity.data["type"] in ["Create", "Announce"] do
object = Object.normalize(activity.data["object"])
-
Pleroma.Web.Streamer.stream("user", activity)
Pleroma.Web.Streamer.stream("list", activity)
Pleroma.Web.Streamer.stream("public:local", activity)
end
- object.data
- |> Map.get("tag", [])
- |> Enum.filter(fn tag -> is_bitstring(tag) end)
- |> Enum.map(fn tag -> Pleroma.Web.Streamer.stream("hashtag:" <> tag, activity) end)
+ if activity.data["type"] in ["Create"] do
+ object.data
+ |> Map.get("tag", [])
+ |> Enum.filter(fn tag -> is_bitstring(tag) end)
+ |> Enum.each(fn tag -> Pleroma.Web.Streamer.stream("hashtag:" <> tag, activity) end)
- if object.data["attachment"] != [] do
- Pleroma.Web.Streamer.stream("public:media", activity)
+ if object.data["attachment"] != [] do
+ Pleroma.Web.Streamer.stream("public:media", activity)
- if activity.local do
- Pleroma.Web.Streamer.stream("public:local:media", activity)
+ if activity.local do
+ Pleroma.Web.Streamer.stream("public:local:media", activity)
+ end
end
end
else
end
end
- def create(%{to: to, actor: actor, context: context, object: object} = params) do
+ def create(%{to: to, actor: actor, context: context, object: object} = params, fake \\ false) do
additional = params[:additional] || %{}
# only accept false as false value
local = !(params[:local] == false)
%{to: to, actor: actor, published: published, context: context, object: object},
additional
),
- {:ok, activity} <- insert(create_data, local),
- :ok <- maybe_federate(activity),
- {:ok, _actor} <- User.increase_note_count(actor) do
+ {:ok, activity} <- insert(create_data, local, fake),
+ {:fake, false, activity} <- {:fake, fake, activity},
+ _ <- increase_replies_count_if_reply(create_data),
+ # Changing note count prior to enqueuing federation task in order to avoid
+ # race conditions on updating user.info
+ {:ok, _actor} <- increase_note_count_if_public(actor, activity),
+ :ok <- maybe_federate(activity) do
{:ok, activity}
+ else
+ {:fake, true, activity} ->
+ {:ok, activity}
end
end
# only accept false as false value
local = !(params[:local] == false)
- with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
+ with data <- %{"to" => to, "type" => "Accept", "actor" => actor.ap_id, "object" => object},
{:ok, activity} <- insert(data, local),
:ok <- maybe_federate(activity) do
{:ok, activity}
# only accept false as false value
local = !(params[:local] == false)
- with data <- %{"to" => to, "type" => "Reject", "actor" => actor, "object" => object},
+ with data <- %{"to" => to, "type" => "Reject", "actor" => actor.ap_id, "object" => object},
{:ok, activity} <- insert(data, local),
:ok <- maybe_federate(activity) do
{:ok, activity}
%User{ap_id: _} = user,
%Object{data: %{"id" => _}} = object,
activity_id \\ nil,
- local \\ true
+ local \\ true,
+ public \\ true
) do
with true <- is_public?(object),
- announce_data <- make_announce_data(user, object, activity_id),
+ announce_data <- make_announce_data(user, object, activity_id, public),
{:ok, activity} <- insert(announce_data, local),
{:ok, object} <- add_announce_to_object(activity, object),
:ok <- maybe_federate(activity) do
def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do
user = User.get_cached_by_ap_id(actor)
+ to = (object.data["to"] || []) ++ (object.data["cc"] || [])
- data = %{
- "type" => "Delete",
- "actor" => actor,
- "object" => id,
- "to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"]
- }
-
- with {:ok, _} <- Object.delete(object),
+ with {:ok, object, activity} <- Object.delete(object),
+ data <- %{
+ "type" => "Delete",
+ "actor" => actor,
+ "object" => id,
+ "to" => to,
+ "deleted_activity_id" => activity && activity.id
+ },
{:ok, activity} <- insert(data, local),
- :ok <- maybe_federate(activity),
- {:ok, _actor} <- User.decrease_note_count(user) do
+ _ <- decrease_replies_count_if_reply(object),
+ # Changing note count prior to enqueuing federation task in order to avoid
+ # race conditions on updating user.info
+ {:ok, _actor} <- decrease_note_count_if_public(user, object),
+ :ok <- maybe_federate(activity) do
{:ok, activity}
end
end
end
end
+ def 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] || %{}
+
+ params = %{
+ actor: actor,
+ context: context,
+ account: account,
+ statuses: statuses,
+ content: content
+ }
+
+ 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 <- maybe_federate(activity) do
+ Enum.each(User.all_superusers(), fn superuser ->
+ superuser
+ |> Pleroma.Emails.AdminEmail.report(actor, account, statuses, content)
+ |> Pleroma.Emails.Mailer.deliver_async()
+ end)
+
+ {:ok, activity}
+ end
+ end
+
def fetch_activities_for_context(context, opts \\ %{}) do
public = ["https://www.w3.org/ns/activitystreams#Public"]
),
order_by: [desc: :id]
)
+ |> Activity.with_preloaded_object()
Repo.all(query)
end
q
|> restrict_unlisted()
- |> Repo.all()
+ |> Pagination.fetch_paginated(opts)
|> Enum.reverse()
end
@valid_visibilities ~w[direct unlisted public private]
- defp restrict_visibility(query, %{visibility: "direct"}) do
- public = "https://www.w3.org/ns/activitystreams#Public"
-
- from(
- activity in query,
- join: sender in User,
- on: sender.ap_id == activity.actor,
- # Are non-direct statuses with no to/cc possible?
- where:
- fragment(
- "not (? && ?)",
- [^public, sender.follower_address],
- activity.recipients
+ defp restrict_visibility(query, %{visibility: visibility})
+ when is_list(visibility) do
+ if Enum.all?(visibility, &(&1 in @valid_visibilities)) do
+ query =
+ from(
+ a in query,
+ where:
+ fragment(
+ "activity_visibility(?, ?, ?) = ANY (?)",
+ a.actor,
+ a.recipients,
+ a.data,
+ ^visibility
+ )
)
- )
+
+ Ecto.Adapters.SQL.to_sql(:all, Repo, query)
+
+ query
+ else
+ Logger.error("Could not restrict visibility to #{visibility}")
+ end
+ end
+
+ defp restrict_visibility(query, %{visibility: visibility})
+ when visibility in @valid_visibilities do
+ query =
+ from(
+ a in query,
+ where:
+ fragment("activity_visibility(?, ?, ?) = ?", a.actor, a.recipients, a.data, ^visibility)
+ )
+
+ Ecto.Adapters.SQL.to_sql(:all, Repo, query)
+
+ query
end
defp restrict_visibility(_query, %{visibility: visibility})
|> Map.put("type", ["Create", "Announce"])
|> Map.put("actor_id", user.ap_id)
|> Map.put("whole_db", true)
+ |> Map.put("pinned_activity_ids", user.info.pinned_activities)
recipients =
if reading_user do
|> Enum.reverse()
end
+ 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_tag(query, %{"tag" => tag}) do
+ defp restrict_tag_reject(query, %{"tag_reject" => tag_reject})
+ when is_list(tag_reject) and tag_reject != [] do
+ from(
+ activity in query,
+ where: fragment(~s(\(not \(? #> '{"object","tag"}'\) \\?| ?\)), activity.data, ^tag_reject)
+ )
+ end
+
+ defp restrict_tag_reject(query, _), do: query
+
+ defp restrict_tag_all(query, %{"tag_all" => tag_all})
+ when is_list(tag_all) and tag_all != [] do
from(
activity in query,
- where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data)
+ where: fragment(~s(\(? #> '{"object","tag"}'\) \\?& ?), activity.data, ^tag_all)
+ )
+ end
+
+ defp restrict_tag_all(query, _), do: query
+
+ defp restrict_tag(query, %{"tag" => tag}) when is_list(tag) do
+ from(
+ activity in query,
+ where: fragment(~s(\(? #> '{"object","tag"}'\) \\?| ?), activity.data, ^tag)
+ )
+ end
+
+ defp restrict_tag(query, %{"tag" => tag}) when is_binary(tag) do
+ from(
+ activity in query,
+ where: fragment(~s(? <@ (? #> '{"object","tag"}'\)), ^tag, activity.data)
)
end
)
end
- defp restrict_limit(query, %{"limit" => limit}) do
- from(activity in query, limit: ^limit)
- end
-
- defp restrict_limit(query, _), do: query
-
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_max(query, %{"max_id" => max_id}) do
- from(activity in query, where: activity.id < ^max_id)
- end
-
- defp restrict_max(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
- restrict_type(query, %{"type" => [type]})
+ from(activity in query, where: fragment("?->>'type' = ?", activity.data, ^type))
end
defp restrict_type(query, %{"type" => type}) do
defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
from(
activity in query,
- where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
+ where: fragment(~s(? <@ (? #> '{"object","likes"}'\)), ^ap_id, activity.data)
)
end
defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do
from(
activity in query,
- where: fragment("not (? #> '{\"object\",\"attachment\"}' = ?)", activity.data, ^[])
+ where: fragment(~s(not (? #> '{"object","attachment"}' = ?\)), activity.data, ^[])
)
end
defp restrict_replies(query, _), do: query
- # Only search through last 100_000 activities by default
- defp restrict_recent(query, %{"whole_db" => true}), do: query
+ defp restrict_reblogs(query, %{"exclude_reblogs" => val}) when val == "true" or val == "1" do
+ from(activity in query, where: fragment("?->>'type' != 'Announce'", activity.data))
+ end
+
+ defp restrict_reblogs(query, _), do: query
+
+ defp restrict_muted(query, %{"with_muted" => val}) when val in [true, "true", "1"], do: query
- defp restrict_recent(query, _) do
- since = (Repo.aggregate(Activity, :max, :id) || 0) - 100_000
+ defp restrict_muted(query, %{"muting_user" => %User{info: info}}) do
+ mutes = info.mutes
- from(activity in query, where: activity.id > ^since)
+ from(
+ activity in query,
+ where: fragment("not (? = ANY(?))", activity.actor, ^mutes),
+ where: fragment("not (?->'to' \\?| ?)", activity.data, ^mutes)
+ )
end
+ defp restrict_muted(query, _), do: query
+
defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
blocks = info.blocks || []
domain_blocks = info.domain_blocks || []
)
end
+ defp restrict_pinned(query, %{"pinned" => "true", "pinned_activity_ids" => ids}) do
+ from(activity in query, where: activity.id in ^ids)
+ end
+
+ defp restrict_pinned(query, _), do: query
+
+ defp restrict_muted_reblogs(query, %{"muting_user" => %User{info: info}}) do
+ muted_reblogs = info.muted_reblogs || []
+
+ 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 maybe_preload_objects(query, %{"skip_preload" => true}), do: query
+
+ defp maybe_preload_objects(query, _) do
+ query
+ |> Activity.with_preloaded_object()
+ end
+
def fetch_activities_query(recipients, opts \\ %{}) do
- base_query =
- from(
- activity in Activity,
- limit: 20,
- order_by: [fragment("? desc nulls last", activity.id)]
- )
+ base_query = from(activity in Activity)
base_query
+ |> maybe_preload_objects(opts)
|> restrict_recipients(recipients, opts["user"])
|> restrict_tag(opts)
+ |> restrict_tag_reject(opts)
+ |> restrict_tag_all(opts)
|> restrict_since(opts)
|> restrict_local(opts)
- |> restrict_limit(opts)
- |> restrict_max(opts)
|> restrict_actor(opts)
|> restrict_type(opts)
|> restrict_favorited_by(opts)
- |> restrict_recent(opts)
|> restrict_blocked(opts)
+ |> restrict_muted(opts)
|> restrict_media(opts)
|> restrict_visibility(opts)
|> restrict_replies(opts)
+ |> restrict_reblogs(opts)
+ |> restrict_pinned(opts)
+ |> restrict_muted_reblogs(opts)
end
def fetch_activities(recipients, opts \\ %{}) do
fetch_activities_query(recipients, opts)
- |> Repo.all()
+ |> Pagination.fetch_paginated(opts)
|> Enum.reverse()
end
def fetch_activities_bounded(recipients_to, recipients_cc, opts \\ %{}) do
fetch_activities_query([], opts)
|> restrict_to_cc(recipients_to, recipients_cc)
- |> Repo.all()
+ |> Pagination.fetch_paginated(opts)
|> Enum.reverse()
end
def upload(file, opts \\ []) do
with {:ok, data} <- Upload.store(file, opts) do
- Repo.insert(%Object{data: data})
+ obj_data =
+ if opts[:actor] do
+ Map.put(data, "actor", opts[:actor])
+ else
+ data
+ end
+
+ Repo.insert(%Object{data: obj_data})
end
end
end
def publish(actor, activity) do
- followers =
+ remote_followers =
if actor.follower_address in activity.recipients do
{:ok, followers} = User.get_followers(actor)
followers |> Enum.filter(&(!&1.local))
public = is_public?(activity)
- remote_inboxes =
- (Pleroma.Web.Salmon.remote_users(activity) ++ followers)
- |> Enum.filter(fn user -> User.ap_enabled?(user) end)
- |> Enum.map(fn %{info: %{source_data: data}} ->
- (is_map(data["endpoints"]) && Map.get(data["endpoints"], "sharedInbox")) || data["inbox"]
- end)
- |> Enum.uniq()
- |> Enum.filter(fn inbox -> should_federate?(inbox, public) end)
-
{:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
json = Jason.encode!(data)
- Enum.each(remote_inboxes, fn inbox ->
- Federator.enqueue(:publish_single_ap, %{
+ (Pleroma.Web.Salmon.remote_users(activity) ++ remote_followers)
+ |> Enum.filter(fn user -> User.ap_enabled?(user) end)
+ |> Enum.map(fn %{info: %{source_data: data}} ->
+ (is_map(data["endpoints"]) && Map.get(data["endpoints"], "sharedInbox")) || data["inbox"]
+ end)
+ |> Enum.uniq()
+ |> Enum.filter(fn inbox -> should_federate?(inbox, public) end)
+ |> Instances.filter_reachable()
+ |> Enum.each(fn {inbox, unreachable_since} ->
+ Federator.publish_single_ap(%{
inbox: inbox,
json: json,
actor: actor,
- id: activity.data["id"]
+ id: activity.data["id"],
+ unreachable_since: unreachable_since
})
end)
end
- def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
+ def publish_one(%{inbox: inbox, json: json, actor: actor, id: id} = params) do
Logger.info("Federating #{id} to #{inbox}")
host = URI.parse(inbox).host
digest = "SHA-256=" <> (:crypto.hash(:sha256, json) |> Base.encode64())
+ date =
+ NaiveDateTime.utc_now()
+ |> Timex.format!("{WDshort}, {0D} {Mshort} {YYYY} {h24}:{m}:{s} GMT")
+
signature =
Pleroma.Web.HTTPSignatures.sign(actor, %{
host: host,
"content-length": byte_size(json),
- digest: digest
+ digest: digest,
+ date: date
})
- @httpoison.post(
- inbox,
- json,
- [
- {"Content-Type", "application/activity+json"},
- {"signature", signature},
- {"digest", digest}
- ],
- hackney: [pool: :default]
- )
- end
-
- def is_public?(activity) do
- "https://www.w3.org/ns/activitystreams#Public" in (activity.data["to"] ++
- (activity.data["cc"] || []))
- end
-
- def visible_for_user?(activity, nil) do
- is_public?(activity)
- end
-
- def visible_for_user?(activity, user) do
- x = [user.ap_id | user.following]
- y = activity.data["to"] ++ (activity.data["cc"] || [])
- visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))
- end
-
- # guard
- def entire_thread_visible_for_user?(nil, user), do: false
-
- # child / root
- def entire_thread_visible_for_user?(
- %Activity{data: %{"object" => object_id}} = tail,
- user
- ) do
- parent = Activity.get_in_reply_to_activity(tail)
-
- cond do
- !is_nil(parent) ->
- visible_for_user?(tail, user) && entire_thread_visible_for_user?(parent, user)
-
- true ->
- visible_for_user?(tail, user)
+ with {:ok, %{status: code}} when code in 200..299 <-
+ result =
+ @httpoison.post(
+ inbox,
+ json,
+ [
+ {"Content-Type", "application/activity+json"},
+ {"Date", date},
+ {"signature", signature},
+ {"digest", digest}
+ ]
+ ) do
+ if !Map.has_key?(params, :unreachable_since) || params[:unreachable_since],
+ do: Instances.set_reachable(inbox)
+
+ result
+ else
+ {_post_result, response} ->
+ unless params[:unreachable_since], do: Instances.set_unreachable(inbox)
+ {:error, response}
end
end
projects / akkoma / blobdiff