X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Factivity_pub%2Factivity_pub.ex;h=554d3a00800b151349743b617cc9eaf7e34c2170;hb=94db9ac4dba6ba02fcae1b9055b532818cf787c7;hp=f3e94b1010c54f978af1ed088f0076ab8038da8a;hpb=b403ea4d2b69cef4434ad68babdfb402d8227847;p=akkoma

diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index f3e94b101..554d3a008 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -1,270 +1,358 @@
 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
+
+  @httpoison Application.get_env(:pleroma, :httpoison)
+
+  def get_recipients(data) do
+    (data["to"] || []) ++ (data["cc"] || [])
+  end
 
   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)
-
-    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)
+    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
+  end
 
-    Repo.insert(%Activity{data: map, local: local})
+  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, actor, context, object, additional \\ %{}, published \\ nil, local \\ true) do
-    published = published || make_date()
+  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]
 
-    activity = %{
-      "type" => "Create",
-      "to" => to |> Enum.uniq,
-      "actor" => actor.ap_id,
-      "object" => object,
-      "published" => published,
-      "context" => context
-    }
-    |> Map.merge(additional)
+    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
 
-    with {:ok, activity} <- insert(activity, local) do
-      if actor.local do
-        Pleroma.Web.Federator.enqueue(:publish, activity)
-       end
+  def accept(%{to: to, actor: actor, object: object} = params) do
+    local = !(params[:local] == false) # only accept false as false value
 
+    with data <- %{"to" => to, "type" => "Accept", "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, 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
 
-        {:ok, activity} = insert(data, local)
+  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
 
-        likes = [ap_id | (object.data["likes"] || [])] |> Enum.uniq
+  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
 
-        new_data = object.data
-        |> Map.put("like_count", length(likes))
-        |> Map.put("likes", likes)
+  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
 
-        changeset = Changeset.change(object, data: new_data)
-        {:ok, object} = Repo.update(changeset)
+  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
 
-        update_object_in_activities(object)
+  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
 
-        if user.local do
-          Pleroma.Web.Federator.enqueue(:publish, activity)
-        end
+    query = from activity in Activity
+    query = query
+      |> restrict_blocked(opts)
+      |> restrict_recipients(recipients, opts["user"])
 
-        {:ok, activity, object}
-    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
 
-  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 = Changeset.change(activity, data: new_activity_data)
-      Repo.update(changeset)
-    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
 
-  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)
+  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
 
-    if activity do
-      # just delete for now...
-      {:ok, _activity} = Repo.delete(activity)
+  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
 
-      likes = (object.data["likes"] || []) |> List.delete(ap_id)
+  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
 
-      new_data = object.data
-      |> Map.put("like_count", length(likes))
-      |> Map.put("likes", likes)
+  defp restrict_local(query, %{"local_only" => true}) do
+    from activity in query, where: activity.local == true
+  end
+  defp restrict_local(query, _), do: query
 
-      changeset = Changeset.change(object, data: new_data)
-      {:ok, object} = Repo.update(changeset)
+  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
 
-      update_object_in_activities(object)
+  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, object}
-    else
-      {:ok, object}
-    end
+  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
 
-  def generate_activity_id do
-    generate_id("activities")
+  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
 
-  def generate_context_id do
-    generate_id("contexts")
+  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_object_id do
-    Pleroma.Web.Router.Helpers.o_status_url(Pleroma.Web.Endpoint, :object, Ecto.UUID.generate)
+  # 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_id(type) do
-    "#{Web.base_url()}/#{type}/#{UUID.generate}"
+  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_public_activities(opts \\ %{}) do
-    public = ["https://www.w3.org/ns/activitystreams#Public"]
-    fetch_activities(public, opts)
+  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 fetch_activities(recipients, opts \\ %{}) do
-    since_id = opts["since_id"] || 0
-
-    query = from activity in Activity,
-      limit: 20,
-      order_by: [desc: :inserted_at]
+    fetch_activities_query(recipients, opts)
+    |> Repo.all
+    |> Enum.reverse
+  end
 
-    query = Enum.reduce(recipients, query, fn (recipient, q) ->
-      map = %{ to: [recipient] }
-      from activity in q,
-      or_where: fragment(~s(? @> ?), activity.data, ^map)
-    end)
+  def upload(file) do
+    data = Upload.store(file)
+    Repo.insert(%Object{data: data})
+  end
 
-    query = from activity in query,
-      where: activity.id > ^since_id
+  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"]
+      }
 
-    query = if opts["local_only"] do
-      from activity in query, where: activity.local == true
-    else
-      query
+      if user = User.get_by_ap_id(ap_id) do
+        User.info_changeset(user, user_data)
+        |> Repo.update
+      else
+        User.insert_or_update_user(user_data)
+      end
     end
+  end
 
-    query = if opts["max_id"] do
-      from activity in query, where: activity.id < ^opts["max_id"]
-    else
-      query
+  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)
     end
+  end
 
-    query = if opts["actor_id"] do
-      from activity in query,
-        where: fragment("? @> ?", activity.data, ^%{actor: opts["actor_id"]})
+  def publish(actor, activity) do
+    followers = if actor.follower_address in activity.recipients do
+      {:ok, followers} = User.get_followers(actor)
+      followers
     else
-      query
+      []
     end
 
-    Enum.reverse(Repo.all(query))
-  end
-
-  def announce(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, local \\ true) do
-    data = %{
-      "type" => "Announce",
-      "actor" => ap_id,
-      "object" => id,
-      "to" => [User.ap_followers(user), object.data["actor"]],
-      "context" => object.data["context"]
-    }
-
-    {: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)
+    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
 
-    if user.local do
-      Pleroma.Web.Federator.enqueue(:publish, 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
-
-    {:ok, activity, object}
   end
 
-  def follow(%User{ap_id: follower_id, local: actor_local}, %User{ap_id: followed_id}, local \\ true) do
-    data = %{
-      "type" => "Follow",
-      "actor" => follower_id,
-      "to" => [followed_id],
-      "object" => followed_id,
-      "published" => make_date()
-    }
-
-    with {:ok, activity} <- insert(data, local) do
-      if actor_local do
-        Pleroma.Web.Federator.enqueue(:publish, activity)
-       end
-
-      {:ok, 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
 
-  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)
+  # 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
         end
-
-        {:ok, activity}
       end
     end
   end
 
-  def fetch_activities_for_context(context) do
-    query = from activity in Activity,
-      where: fragment("? @> ?", activity.data, ^%{ context: context })
-    Repo.all(query)
-  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 is_public?(activity) do
+    "https://www.w3.org/ns/activitystreams#Public" in (activity.data["to"] ++ (activity.data["cc"] || []))
   end
 
-  def upload(file) do
-    data = Upload.store(file)
-    Repo.insert(%Object{data: data})
+  def visible_for_user?(activity, nil) do
+    is_public?(activity)
   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