defmodule Pleroma.Web.ActivityPub.ActivityPub do
- alias Pleroma.{Activity, Repo, Object, Upload, User, Web}
- alias Ecto.{Changeset, UUID}
+ alias Pleroma.{Activity, Repo, Object, Upload, User, Notification}
+ alias Pleroma.Web.ActivityPub.Transmogrifier
+ alias Pleroma.Web.WebFinger
+ alias Pleroma.Web.Federator
+ alias Pleroma.Web.OStatus
import Ecto.Query
+ import Pleroma.Web.ActivityPub.Utils
require Logger
- def insert(map, local \\ true) when is_map(map) do
- map = map
- |> Map.put_new_lazy("id", &generate_activity_id/0)
- |> Map.put_new_lazy("published", &make_date/0)
+ @httpoison Application.get_env(:pleroma, :httpoison)
+
+ def get_recipients(data) do
+ (data["to"] || []) ++ (data["cc"] || [])
+ end
- with %Activity{} = activity <- Activity.get_by_ap_id(map["id"]) do
- Logger.debug(fn -> "Already have activity, #{activity.id}, not inserting." end)
+ def insert(map, local \\ true) when is_map(map) do
+ with nil <- Activity.get_by_ap_id(map["id"]),
+ map <- lazy_put_activity_defaults(map),
+ :ok <- insert_full_object(map) do
+ {:ok, activity} = Repo.insert(%Activity{data: map, local: local, actor: map["actor"], recipients: get_recipients(map)})
+ Notification.create_notifications(activity)
+ stream_out(activity)
{:ok, activity}
- else _e ->
- map = if is_map(map["object"]) do
- object = Map.put_new_lazy(map["object"], "id", &generate_object_id/0)
- Repo.insert!(%Object{data: object})
- Map.put(map, "object", object)
- else
- map
+ else
+ %Activity{} = activity -> {:ok, activity}
+ error -> {:error, error}
+ end
+ end
+
+ def stream_out(activity) do
+ if activity.data["type"] in ["Create", "Announce"] do
+ Pleroma.Web.Streamer.stream("user", activity)
+ if Enum.member?(activity.data["to"], "https://www.w3.org/ns/activitystreams#Public") do
+ Pleroma.Web.Streamer.stream("public", activity)
+ if activity.local do
+ Pleroma.Web.Streamer.stream("public:local", activity)
+ end
end
+ end
+ end
+
+ def create(%{to: to, actor: actor, context: context, object: object} = params) do
+ additional = params[:additional] || %{}
+ local = !(params[:local] == false) # only accept false as false value
+ published = params[:published]
- Repo.insert(%Activity{data: map, local: local})
+ with create_data <- make_create_data(%{to: to, actor: actor, published: published, context: context, object: object}, additional),
+ {:ok, activity} <- insert(create_data, local),
+ :ok <- maybe_federate(activity) do
+ {:ok, activity}
end
end
- def create(to, actor, context, object, additional \\ %{}, published \\ nil, local \\ true) do
- published = published || make_date()
+ def accept(%{to: to, actor: actor, object: object} = params) do
+ local = !(params[:local] == false) # only accept false as false value
- activity = %{
- "type" => "Create",
- "to" => to |> Enum.uniq,
- "actor" => actor.ap_id,
- "object" => object,
- "published" => published,
- "context" => context
- }
- |> Map.merge(additional)
+ with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
+ {:ok, activity} <- insert(data, local),
+ :ok <- maybe_federate(activity) do
+ {:ok, activity}
+ end
+ end
- with {:ok, activity} <- insert(activity, local) do
- if actor.local do
- Pleroma.Web.Federator.enqueue(:publish, activity)
- end
+ def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
+ local = !(params[:local] == false) # only accept false as false value
+ with data <- %{"to" => to, "cc" => cc, "type" => "Update", "actor" => actor, "object" => object},
+ {:ok, activity} <- insert(data, local),
+ :ok <- maybe_federate(activity) do
{:ok, activity}
end
end
- def like(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, activity_id \\ nil, local \\ true) do
- cond do
- # There's already a like here, so return the original activity.
- ap_id in (object.data["likes"] || []) ->
- query = from activity in Activity,
- where: fragment("? @> ?", activity.data, ^%{actor: ap_id, object: id, type: "Like"})
+ # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
+ def like(%User{ap_id: ap_id} = user, %Object{data: %{"id" => _}} = object, activity_id \\ nil, local \\ true) do
+ with nil <- get_existing_like(ap_id, object),
+ like_data <- make_like_data(user, object, activity_id),
+ {:ok, activity} <- insert(like_data, local),
+ {:ok, object} <- add_like_to_object(activity, object),
+ :ok <- maybe_federate(activity) do
+ {:ok, activity, object}
+ else
+ %Activity{} = activity -> {:ok, activity, object}
+ error -> {:error, error}
+ end
+ end
- activity = Repo.one(query)
- {:ok, activity, object}
- true ->
- data = %{
- "type" => "Like",
- "actor" => ap_id,
- "object" => id,
- "to" => [User.ap_followers(user), object.data["actor"]],
- "context" => object.data["context"]
- }
+ def unlike(%User{} = actor, %Object{} = object) do
+ with %Activity{} = activity <- get_existing_like(actor.ap_id, object),
+ {:ok, _activity} <- Repo.delete(activity),
+ {:ok, object} <- remove_like_from_object(activity, object) do
+ {:ok, object}
+ else _e -> {:ok, object}
+ end
+ end
- data = if activity_id, do: Map.put(data, "id", activity_id), else: data
+ def announce(%User{ap_id: _} = user, %Object{data: %{"id" => _}} = object, activity_id \\ nil, local \\ true) do
+ with true <- is_public?(object),
+ announce_data <- make_announce_data(user, object, activity_id),
+ {:ok, activity} <- insert(announce_data, local),
+ {:ok, object} <- add_announce_to_object(activity, object),
+ :ok <- maybe_federate(activity) do
+ {:ok, activity, object}
+ else
+ error -> {:error, error}
+ end
+ end
- {:ok, activity} = insert(data, local)
+ def follow(follower, followed, activity_id \\ nil, local \\ true) do
+ with data <- make_follow_data(follower, followed, activity_id),
+ {:ok, activity} <- insert(data, local),
+ :ok <- maybe_federate(activity) do
+ {:ok, activity}
+ end
+ end
- likes = [ap_id | (object.data["likes"] || [])] |> Enum.uniq
+ def unfollow(follower, followed, local \\ true) do
+ with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
+ unfollow_data <- make_unfollow_data(follower, followed, follow_activity),
+ {:ok, activity} <- insert(unfollow_data, local),
+ :ok, maybe_federate(activity) do
+ {:ok, activity}
+ end
+ end
- new_data = object.data
- |> Map.put("like_count", length(likes))
- |> Map.put("likes", likes)
+ def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do
+ user = User.get_cached_by_ap_id(actor)
+ data = %{
+ "type" => "Delete",
+ "actor" => actor,
+ "object" => id,
+ "to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"]
+ }
+ with Repo.delete(object),
+ Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)),
+ {:ok, activity} <- insert(data, local),
+ :ok <- maybe_federate(activity) do
+ {:ok, activity}
+ end
+ end
- changeset = Changeset.change(object, data: new_data)
- {:ok, object} = Repo.update(changeset)
+ def fetch_activities_for_context(context, opts \\ %{}) do
+ public = ["https://www.w3.org/ns/activitystreams#Public"]
+ recipients = if opts["user"], do: [opts["user"].ap_id | opts["user"].following] ++ public, else: public
- update_object_in_activities(object)
+ query = from activity in Activity
+ query = query
+ |> restrict_blocked(opts)
+ |> restrict_recipients(recipients, opts["user"])
- if user.local do
- Pleroma.Web.Federator.enqueue(:publish, activity)
- end
+ query = from activity in query,
+ where: fragment("?->>'type' = ? and ?->>'context' = ?", activity.data, "Create", activity.data, ^context),
+ order_by: [desc: :id]
+ Repo.all(query)
+ end
- {:ok, activity, object}
- end
+ def fetch_public_activities(opts \\ %{}) do
+ public = %{to: ["https://www.w3.org/ns/activitystreams#Public"]}
+ q = fetch_activities_query([], opts)
+ q = from activity in q,
+ where: fragment(~s(? @> ?), activity.data, ^public)
+ q
+ |> Repo.all
+ |> Enum.reverse
end
- defp update_object_in_activities(%{data: %{"id" => id}} = object) do
- # TODO
- # Update activities that already had this. Could be done in a seperate process.
- # Alternatively, just don't do this and fetch the current object each time. Most
- # could probably be taken from cache.
- relevant_activities = Activity.all_by_object_ap_id(id)
- Enum.map(relevant_activities, fn (activity) ->
- new_activity_data = activity.data |> Map.put("object", object.data)
- changeset = Changeset.change(activity, data: new_activity_data)
- Repo.update(changeset)
- end)
+ 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
- def unlike(%User{ap_id: ap_id}, %Object{data: %{ "id" => id}} = object) do
- query = from activity in Activity,
- where: fragment("? @> ?", activity.data, ^%{actor: ap_id, object: id, type: "Like"})
+ defp restrict_tag(query, %{"tag" => tag}) do
+ from activity in query,
+ where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data)
+ end
+ defp restrict_tag(query, _), do: query
- activity = Repo.one(query)
+ defp restrict_recipients(query, [], user), do: query
+ defp restrict_recipients(query, recipients, nil) do
+ from activity in query,
+ where: fragment("? && ?", ^recipients, activity.recipients)
+ end
+ defp restrict_recipients(query, recipients, user) do
+ from activity in query,
+ where: fragment("? && ?", ^recipients, activity.recipients),
+ or_where: activity.actor == ^user.ap_id
+ end
- if activity do
- # just delete for now...
- {:ok, _activity} = Repo.delete(activity)
+ defp restrict_local(query, %{"local_only" => true}) do
+ from activity in query, where: activity.local == true
+ end
+ defp restrict_local(query, _), do: query
- likes = (object.data["likes"] || []) |> List.delete(ap_id)
+ 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
- new_data = object.data
- |> Map.put("like_count", length(likes))
- |> Map.put("likes", likes)
+ 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
- changeset = Changeset.change(object, data: new_data)
- {:ok, object} = Repo.update(changeset)
+ defp restrict_type(query, %{"type" => type}) when is_binary(type) do
+ restrict_type(query, %{"type" => [type]})
+ end
+ defp restrict_type(query, %{"type" => type}) do
+ from activity in query,
+ where: fragment("?->>'type' = ANY(?)", activity.data, ^type)
+ end
+ defp restrict_type(query, _), do: query
- update_object_in_activities(object)
+ defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
+ from activity in query,
+ where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
+ end
+ defp restrict_favorited_by(query, _), do: query
- {:ok, object}
- else
- {:ok, object}
- 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, ^[])
end
+ defp restrict_media(query, _), do: query
- def generate_activity_id do
- generate_id("activities")
+ # Only search through last 100_000 activities by default
+ defp restrict_recent(query, %{"whole_db" => true}), do: query
+ defp restrict_recent(query, _) do
+ since = (Repo.aggregate(Activity, :max, :id) || 0) - 100_000
+
+ from activity in query,
+ where: activity.id > ^since
end
- def generate_context_id do
- generate_id("contexts")
+ defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
+ blocks = info["blocks"] || []
+ from activity in query,
+ where: fragment("not (? = ANY(?))", activity.actor, ^blocks)
end
+ defp restrict_blocked(query, _), do: query
- def generate_object_id do
- Pleroma.Web.Router.Helpers.o_status_url(Pleroma.Web.Endpoint, :object, Ecto.UUID.generate)
+ 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
+ |> restrict_recipients(recipients, opts["user"])
+ |> restrict_tag(opts)
+ |> restrict_since(opts)
+ |> restrict_local(opts)
+ |> restrict_max(opts)
+ |> restrict_actor(opts)
+ |> restrict_type(opts)
+ |> restrict_favorited_by(opts)
+ |> restrict_recent(opts)
+ |> restrict_blocked(opts)
+ |> restrict_media(opts)
end
- def generate_id(type) do
- "#{Web.base_url()}/#{type}/#{UUID.generate}"
+ def fetch_activities(recipients, opts \\ %{}) do
+ fetch_activities_query(recipients, opts)
+ |> Repo.all
+ |> Enum.reverse
end
- def fetch_public_activities(opts \\ %{}) do
- public = ["https://www.w3.org/ns/activitystreams#Public"]
- fetch_activities(public, opts)
+ def upload(file) do
+ data = Upload.store(file)
+ Repo.insert(%Object{data: data})
end
- def fetch_activities(recipients, opts \\ %{}) do
- since_id = opts["since_id"] || 0
+ def user_data_from_user_object(data) do
+ avatar = data["icon"]["url"] && %{
+ "type" => "Image",
+ "url" => [%{"href" => data["icon"]["url"]}]
+ }
- query = from activity in Activity,
- limit: 20,
- order_by: [desc: :inserted_at]
+ banner = data["image"]["url"] && %{
+ "type" => "Image",
+ "url" => [%{"href" => data["image"]["url"]}]
+ }
- query = Enum.reduce(recipients, query, fn (recipient, q) ->
- map = %{ to: [recipient] }
- from activity in q,
- or_where: fragment(~s(? @> ?), activity.data, ^map)
- end)
+ user_data = %{
+ ap_id: data["id"],
+ info: %{
+ "ap_enabled" => true,
+ "source_data" => data,
+ "banner" => banner
+ },
+ avatar: avatar,
+ nickname: "#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}",
+ name: data["name"],
+ follower_address: data["followers"],
+ bio: data["summary"]
+ }
- query = from activity in query,
- where: activity.id > ^since_id
+ {:ok, user_data}
+ end
- query = if opts["local_only"] do
- from activity in query, where: activity.local == true
+ def fetch_and_prepare_user_from_ap_id(ap_id) do
+ with {:ok, %{status_code: 200, body: body}} <- @httpoison.get(ap_id, ["Accept": "application/activity+json"]),
+ {:ok, data} <- Poison.decode(body) do
+ user_data_from_user_object(data)
else
- query
+ e -> Logger.error("Could not user at fetch #{ap_id}, #{inspect(e)}")
end
+ end
- query = if opts["max_id"] do
- from activity in query, where: activity.id < ^opts["max_id"]
+ def make_user_from_ap_id(ap_id) do
+ if user = User.get_by_ap_id(ap_id) do
+ Transmogrifier.upgrade_user_from_ap_id(ap_id)
else
- query
+ with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
+ User.insert_or_update_user(data)
+ else
+ e -> {:error, e}
+ end
end
+ end
- query = if opts["actor_id"] do
- from activity in query,
- where: fragment("? @> ?", activity.data, ^%{actor: opts["actor_id"]})
+ 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)
else
- query
+ _e -> {:error, "No ap id in webfinger"}
end
-
- Enum.reverse(Repo.all(query))
end
- def announce(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, activity_id \\ nil, local \\ true) do
- data = %{
- "type" => "Announce",
- "actor" => ap_id,
- "object" => id,
- "to" => [User.ap_followers(user), object.data["actor"]],
- "context" => object.data["context"]
- }
-
- data = if activity_id, do: Map.put(data, "id", activity_id), else: data
-
- {:ok, activity} = insert(data, local)
-
- announcements = [ap_id | (object.data["announcements"] || [])] |> Enum.uniq
-
- new_data = object.data
- |> Map.put("announcement_count", length(announcements))
- |> Map.put("announcements", announcements)
-
- changeset = Changeset.change(object, data: new_data)
- {:ok, object} = Repo.update(changeset)
-
- update_object_in_activities(object)
-
- if user.local do
- Pleroma.Web.Federator.enqueue(:publish, activity)
+ def publish(actor, activity) do
+ followers = if actor.follower_address in activity.recipients do
+ {:ok, followers} = User.get_followers(actor)
+ followers |> Enum.filter(&(!&1.local))
+ else
+ []
end
- {:ok, activity, object}
- end
-
- def follow(%User{ap_id: follower_id, local: actor_local}, %User{ap_id: followed_id}, activity_id \\ nil, local \\ true) do
- data = %{
- "type" => "Follow",
- "actor" => follower_id,
- "to" => [followed_id],
- "object" => followed_id,
- "published" => make_date()
- }
-
- data = if activity_id, do: Map.put(data, "id", activity_id), else: data
-
- with {:ok, activity} <- insert(data, local) do
- if actor_local do
- Pleroma.Web.Federator.enqueue(:publish, activity)
- end
+ 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}}) ->
+ (data["endpoints"] && data["endpoints"]["sharedInbox"]) || data["inbox"]
+ end)
+ |> Enum.uniq
- {:ok, activity}
+ {:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
+ json = Poison.encode!(data)
+ Enum.each remote_inboxes, fn(inbox) ->
+ Federator.enqueue(:publish_single_ap, %{inbox: inbox, json: json, actor: actor, id: activity.data["id"]})
end
end
- def unfollow(follower, followed, local \\ true) do
- with follow_activity when not is_nil(follow_activity) <- fetch_latest_follow(follower, followed) do
- data = %{
- "type" => "Undo",
- "actor" => follower.ap_id,
- "to" => [followed.ap_id],
- "object" => follow_activity.data["id"],
- "published" => make_date()
- }
-
- with {:ok, activity} <- insert(data, local) do
- if follower.local do
- Pleroma.Web.Federator.enqueue(:publish, activity)
- end
+ def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
+ Logger.info("Federating #{id} to #{inbox}")
+ host = URI.parse(inbox).host
+ signature = Pleroma.Web.HTTPSignatures.sign(actor, %{host: host, "content-length": byte_size(json)})
+ @httpoison.post(inbox, json, [{"Content-Type", "application/activity+json"}, {"signature", signature}])
+ end
- {:ok, activity}
+ # TODO:
+ # This will create a Create activity, which we need internally at the moment.
+ def fetch_object_from_id(id) do
+ if object = Object.get_cached_by_ap_id(id) do
+ {:ok, object}
+ else
+ Logger.info("Fetching #{id} via AP")
+ with {:ok, %{body: body, status_code: code}} when code in 200..299 <- @httpoison.get(id, [Accept: "application/activity+json"], follow_redirect: true, timeout: 10000, recv_timeout: 20000),
+ {:ok, data} <- Poison.decode(body),
+ nil <- Object.get_by_ap_id(data["id"]),
+ params <- %{"type" => "Create", "to" => data["to"], "cc" => data["cc"], "actor" => data["attributedTo"], "object" => data},
+ {:ok, activity} <- Transmogrifier.handle_incoming(params) do
+ {:ok, Object.get_by_ap_id(activity.data["object"]["id"])}
+ else
+ object = %Object{} -> {:ok, object}
+ e ->
+ Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
+ case OStatus.fetch_activity_from_url(id) do
+ {:ok, [activity | _]} -> {:ok, Object.get_by_ap_id(activity.data["object"]["id"])}
+ e -> e
+ end
end
end
end
- def fetch_activities_for_context(context) do
- query = from activity in Activity,
- where: fragment("? @> ?", activity.data, ^%{ context: context })
- Repo.all(query)
+ def is_public?(activity) do
+ "https://www.w3.org/ns/activitystreams#Public" in (activity.data["to"] ++ (activity.data["cc"] || []))
end
- def fetch_latest_follow(%User{ap_id: follower_id},
- %User{ap_id: followed_id}) do
- query = from activity in Activity,
- where: fragment("? @> ?", activity.data, ^%{type: "Follow", actor: follower_id,
- object: followed_id}),
- order_by: [desc: :inserted_at],
- limit: 1
- Repo.one(query)
+ def visible_for_user?(activity, nil) do
+ is_public?(activity)
end
-
- def upload(file) do
- data = Upload.store(file)
- Repo.insert(%Object{data: data})
- end
-
- defp make_date do
- DateTime.utc_now() |> DateTime.to_iso8601
+ 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
end
projects / akkoma / blobdiff