277 lines
7.8 KiB
Elixir
277 lines
7.8 KiB
Elixir
defmodule Eventos.Service.ActivityPub do
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alias Eventos.Events
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alias Eventos.Events.Event
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alias Eventos.Service.ActivityPub.Transmogrifier
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alias Eventos.Service.WebFinger
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alias Eventos.Activity
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alias Eventos.Accounts
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alias Eventos.Accounts.Account
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alias Eventos.Service.Federator
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import Logger
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import Eventos.Service.ActivityPub.Utils
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def get_recipients(data) do
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(data["to"] || []) ++ (data["cc"] || [])
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end
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def insert(map, local \\ true) when is_map(map) do
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with map <- lazy_put_activity_defaults(map),
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:ok <- insert_full_object(map) do
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map = Map.put(map, "id", Ecto.UUID.generate())
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activity = %Activity{
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data: map,
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local: local,
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actor: map["actor"],
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recipients: get_recipients(map)
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}
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# Notification.create_notifications(activity)
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#stream_out(activity)
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{:ok, activity}
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else
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%Activity{} = activity -> {:ok, activity}
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error -> {:error, error}
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end
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end
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def fetch_event_from_url(url) do
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if object = Events.get_event_by_url!(url) do
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{:ok, object}
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else
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Logger.info("Fetching #{url} via AP")
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with true <- String.starts_with?(url, "http"),
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{:ok, %{body: body, status_code: code}} when code in 200..299 <-
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HTTPoison.get(
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url,
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[Accept: "application/activity+json"],
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follow_redirect: true,
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timeout: 10000,
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recv_timeout: 20000
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),
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{:ok, data} <- Jason.decode(body),
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nil <- Events.get_event_by_url!(data["id"]),
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params <- %{
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"type" => "Create",
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"to" => data["to"],
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"cc" => data["cc"],
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"actor" => data["attributedTo"],
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"object" => data
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},
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{:ok, activity} <- Transmogrifier.handle_incoming(params) do
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{:ok, Events.get_event_by_url!(activity.data["object"]["id"])}
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else
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object = %Event{} -> {:ok, object}
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e -> e
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end
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end
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end
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def create(%{to: to, actor: actor, context: context, object: object} = params) do
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additional = params[:additional] || %{}
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# only accept false as false value
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local = !(params[:local] == false)
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published = params[:published]
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with create_data <-
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make_create_data(
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%{to: to, actor: actor, published: published, context: context, object: object},
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additional
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),
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{:ok, activity} <- insert(create_data, local),
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:ok <- maybe_federate(activity) do
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# {:ok, actor} <- Accounts.increase_event_count(actor) do
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{:ok, activity}
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end
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end
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def accept(%{to: to, actor: actor, object: object} = params) do
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# only accept false as false value
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local = !(params[:local] == false)
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with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
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{:ok, activity} <- insert(data, local),
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:ok <- maybe_federate(activity) do
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{:ok, activity}
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end
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end
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def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
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# only accept false as false value
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local = !(params[:local] == false)
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with data <- %{
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"to" => to,
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"cc" => cc,
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"type" => "Update",
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"actor" => actor,
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"object" => object
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},
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{:ok, activity} <- insert(data, local),
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:ok <- maybe_federate(activity) do
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{:ok, activity}
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end
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end
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def follow(follower, followed, activity_id \\ nil, local \\ true) do
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with data <- make_follow_data(follower, followed, activity_id),
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{:ok, activity} <- insert(data, local),
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:ok <- maybe_federate(activity) do
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{:ok, activity}
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end
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end
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def delete(%Event{url: url, organizer_account: account} = event, local \\ true) do
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data = %{
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"type" => "Delete",
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"actor" => account.url,
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"object" => url,
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"to" => [account.url <> "/followers", "https://www.w3.org/ns/activitystreams#Public"]
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}
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with Events.delete_event(event),
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{:ok, activity} <- insert(data, local),
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:ok <- maybe_federate(activity)
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do
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{:ok, activity}
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end
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end
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def create_public_activities(%Account{} = account) do
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end
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def make_account_from_url(url) do
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with {:ok, data} <- fetch_and_prepare_user_from_url(url) do
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Accounts.insert_or_update_account(data)
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else
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e ->
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Logger.error("Failed to make account from url")
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Logger.error(inspect e)
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{:error, e}
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end
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end
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def make_account_from_nickname(nickname) do
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with {:ok, %{"url" => url}} when not is_nil(url) <- WebFinger.finger(nickname) do
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make_account_from_url(url)
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else
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_e -> {:error, "No ActivityPub URL found in WebFinger"}
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end
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end
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def publish(actor, activity) do
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# followers =
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# if actor.follower_address in activity.recipients do
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# {:ok, followers} = User.get_followers(actor)
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# followers |> Enum.filter(&(!&1.local))
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# else
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# []
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# end
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followers = ["http://localhost:3000/users/tcit/inbox"]
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remote_inboxes = followers
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{:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
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json = Jason.encode!(data)
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Enum.each(remote_inboxes, fn inbox ->
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Federator.enqueue(:publish_single_ap, %{
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inbox: inbox,
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json: json,
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actor: actor,
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id: activity.data["id"]
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})
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end)
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end
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def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
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Logger.info("Federating #{id} to #{inbox}")
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host = URI.parse(inbox).host
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signature =
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Eventos.Service.HTTPSignatures.sign(actor, %{host: host, "content-length": byte_size(json)})
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Logger.debug("signature")
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Logger.debug(inspect signature)
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{:ok, response} = HTTPoison.post(
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inbox,
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json,
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[{"Content-Type", "application/activity+json"}, {"signature", signature}],
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hackney: [pool: :default]
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)
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Logger.debug(inspect response)
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end
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def fetch_and_prepare_user_from_url(url) do
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Logger.debug("Fetching and preparing user from url")
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with {:ok, %{status_code: 200, body: body}} <-
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HTTPoison.get(url, [Accept: "application/activity+json"], [follow_redirect: true]),
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{:ok, data} <- Jason.decode(body) do
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user_data_from_user_object(data)
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else
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e -> Logger.error("Could not decode user at fetch #{url}, #{inspect(e)}")
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end
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end
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def user_data_from_user_object(data) do
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avatar =
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data["icon"]["url"] &&
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%{
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"type" => "Image",
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"url" => [%{"href" => data["icon"]["url"]}]
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}
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banner =
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data["image"]["url"] &&
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%{
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"type" => "Image",
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"url" => [%{"href" => data["image"]["url"]}]
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}
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user_data = %{
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url: data["id"],
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info: %{
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"ap_enabled" => true,
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"source_data" => data,
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"banner" => banner
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},
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avatar: avatar,
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username: "#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}",
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display_name: data["name"],
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follower_address: data["followers"],
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description: data["summary"],
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public_key: data["publicKey"]["publicKeyPem"],
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}
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{:ok, user_data}
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end
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@spec fetch_public_activities_for_account(Account.t, integer(), integer()) :: list()
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def fetch_public_activities_for_account(%Account{} = account, page \\ 10, limit \\ 1) do
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{:ok, events, total} = Events.get_events_for_account(account, page, limit)
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activities = Enum.map(events, fn event ->
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{:ok, activity} = event_to_activity(event)
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activity
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end)
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{activities, total}
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end
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defp event_to_activity(%Event{} = event) do
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activity = %Activity{
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data: event,
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local: true,
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actor: event.organizer_account.url,
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recipients: ["https://www.w3.org/ns/activitystreams#Public"]
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}
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# Notification.create_notifications(activity)
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#stream_out(activity)
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{:ok, activity}
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end
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end
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