X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Factivity_pub%2Factivity_pub.ex;h=a7b2988b9afe506c352e107c304c852e8a06e836;hb=5454ec6a6ccedb2647cb765251e4cef3df2fcaf3;hp=0d3360ee187c4773909748e76aef552eef050d1c;hpb=ce1eef9c989f0387168b48f6f61a4c1f84b3f5b5;p=akkoma

diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index 0d3360ee1..a7b2988b9 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -1,109 +1,126 @@
 defmodule Pleroma.Web.ActivityPub.ActivityPub do
-  alias Pleroma.Repo
-  alias Pleroma.{Activity, Object, Upload, User}
+  alias Pleroma.{Activity, Repo, Object, Upload, User, Notification}
   import Ecto.Query
+  import Pleroma.Web.ActivityPub.Utils
+  require Logger
 
-  def insert(map) 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)
 
-    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)
+  def get_recipients(data) do
+    (data["to"] || []) ++ (data["cc"] || [])
+  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
-      map
+      %Activity{} = activity -> {:ok, activity}
+      error -> {:error, error}
     end
-
-    Repo.insert(%Activity{data: map})
   end
 
-  def like(%User{ap_id: ap_id} = user, %Object{data: %{ "id" => id}} = object) 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"})
-
-        activity = Repo.one(query)
-        {:ok, activity, object}
-      true ->
-        data = %{
-          "type" => "Like",
-          "actor" => ap_id,
-          "object" => id,
-          "to" => [User.ap_followers(user), object.data["actor"]]
-        }
-
-        {:ok, activity} = insert(data)
-
-        likes = [ap_id | (object.data["likes"] || [])] |> Enum.uniq
-
-        new_data = object.data
-        |> Map.put("like_count", length(likes))
-        |> Map.put("likes", likes)
-
-        changeset = Ecto.Changeset.change(object, data: new_data)
-        {:ok, object} = Repo.update(changeset)
+  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
 
-        update_object_in_activities(object)
+  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]
 
-        {:ok, activity, object}
+    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
 
-  defp update_object_in_activities(%{data: %{"id" => id}} = object) do
-    # Update activities that already had this. Could be done in a seperate process.
-    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 = Ecto.Changeset.change(activity, data: new_activity_data)
-      Repo.update(changeset)
-    end)
+  # 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
 
-  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"})
-
-    activity = Repo.one(query)
-
-    if activity do
-      # just delete for now...
-      {:ok, _activity} = Repo.delete(activity)
-
-      likes = (object.data["likes"] || []) |> List.delete(ap_id)
-
-      new_data = object.data
-      |> Map.put("like_count", length(likes))
-      |> Map.put("likes", likes)
-
-      changeset = Ecto.Changeset.change(object, data: new_data)
-      {:ok, object} = Repo.update(changeset)
-
-      update_object_in_activities(object)
-
+  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
+
+  def announce(%User{ap_id: _} = user, %Object{data: %{"id" => _}} = object, activity_id \\ nil, local \\ true) do
+    with 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
-      {:ok, object}
+      error -> {:error, error}
     end
   end
 
-  def generate_activity_id do
-    generate_id("activities")
+  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
 
-  def generate_context_id do
-    generate_id("contexts")
+  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
 
-  def generate_object_id do
-    generate_id("objects")
+  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
 
-  def generate_id(type) do
-    "#{Pleroma.Web.base_url()}/#{type}/#{Ecto.UUID.generate}"
+  def fetch_activities_for_context(context, opts \\ %{}) do
+    query = from activity in Activity,
+      where: fragment("?->>'type' = ? and ?->>'context' = ?", activity.data, "Create", activity.data, ^context),
+      order_by: [desc: :id]
+    query = restrict_blocked(query, opts)
+    Repo.all(query)
   end
 
   def fetch_public_activities(opts \\ %{}) do
@@ -111,68 +128,139 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     fetch_activities(public, opts)
   end
 
-  def fetch_activities(recipients, opts \\ %{}) do
-    since_id = opts["since_id"] || 0
+  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
 
-    query = from activity in Activity,
-      limit: 20,
-      order_by: [desc: :inserted_at]
+  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
 
-    query = Enum.reduce(recipients, query, fn (recipient, q) ->
+  defp restrict_recipients(query, recipients) do
+    Enum.reduce(recipients, query, fn (recipient, q) ->
       map = %{ to: [recipient] }
       from activity in q,
       or_where: fragment(~s(? @> ?), activity.data, ^map)
     end)
+  end
 
-    query = from activity in query,
-      where: activity.id > ^since_id
-
-    query = if opts["max_id"] do
-      from activity in query, where: activity.id < ^opts["max_id"]
-    else
-      query
-    end
+  defp restrict_local(query, %{"local_only" => true}) do
+    from activity in query, where: activity.local == true
+  end
+  defp restrict_local(query, _), do: query
 
-    Repo.all(query)
-    |> Enum.reverse
+  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
 
-  def announce(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object) do
-    data = %{
-      "type" => "Announce",
-      "actor" => ap_id,
-      "object" => id,
-      "to" => [User.ap_followers(user), object.data["actor"]]
-    }
+  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
 
-    {:ok, activity} = insert(data)
+  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
 
-    announcements = [ap_id | (object.data["announcements"] || [])] |> Enum.uniq
+  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
 
-    new_data = object.data
-    |> Map.put("announcement_count", length(announcements))
-    |> Map.put("announcements", announcements)
+  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
 
-    changeset = Ecto.Changeset.change(object, data: new_data)
-    {:ok, object} = Repo.update(changeset)
+  # 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
 
-    update_object_in_activities(object)
+    from activity in query,
+      where: activity.id > ^since
+  end
 
-    {:ok, activity, object}
+  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 fetch_activities_for_context(context) do
-    query = from activity in Activity,
-      where: fragment("? @> ?", activity.data, ^%{ context: context })
-    Repo.all(query)
+  def fetch_activities(recipients, opts \\ %{}) do
+    base_query = from activity in Activity,
+      limit: 20,
+      order_by: [fragment("? desc nulls last", activity.id)]
+
+    base_query
+    |> restrict_recipients(recipients)
+    |> 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)
+    |> Repo.all
+    |> Enum.reverse
   end
 
-  def upload(%Plug.Upload{} = file) do
+  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 make_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 = %{
+        ap_id: data["id"],
+        info: %{
+          "ap_enabled" => true,
+          "source_data" => data
+        },
+        nickname: "#{data["preferredUsername"]}@#{URI.parse(ap_id).host}",
+        name: data["name"]
+      }
+
+      User.insert_or_update_user(user_data)
+    end
+  end
+
+  # TODO: Extract to own module, align as close to Mastodon format as possible.
+  def sanitize_outgoing_activity_data(data) do
+    data
+    |> Map.put("@context", "https://www.w3.org/ns/activitystreams")
+  end
+
+  def publish(actor, activity) do
+    remote_users = Pleroma.Web.Salmon.remote_users(activity)
+    data = sanitize_outgoing_activity_data(activity.data)
+    Enum.each remote_users, fn(user) ->
+      if user.info["ap_enabled"] do
+        inbox = user.info["source_data"]["inbox"]
+        Logger.info("Federating #{activity.data["id"]} to #{inbox}")
+        host = URI.parse(inbox).host
+        signature = Pleroma.Web.HTTPSignatures.sign(actor, %{host: host})
+        @httpoison.post(inbox, Poison.encode!(data), [{"Content-Type", "application/activity+json"}, {"signature", signature}])
+      end
+    end
   end
 end