X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Factivity_pub%2Ftransmogrifier.ex;h=20b1603df11075f78cdbd45a1d773741635fa319;hb=89c5de90969cbd2b7cd5854c7209795443659062;hp=af6b5befce6bca012db51f1aff80ce65483d112f;hpb=6046f10431390fa2ecef4b8d8a95b5d8db03fd2d;p=akkoma

diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
index af6b5befc..20b1603df 100644
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -5,8 +5,13 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   alias Pleroma.User
   alias Pleroma.Object
   alias Pleroma.Activity
+  alias Pleroma.Repo
   alias Pleroma.Web.ActivityPub.ActivityPub
 
+  import Ecto.Query
+
+  require Logger
+
   @doc """
   Modifies an incoming AP object (mastodon format) to our internal format.
   """
@@ -14,49 +19,125 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     object
     |> Map.put("actor", object["attributedTo"])
     |> fix_attachments
+    |> fix_context
+    |> fix_in_reply_to
+    |> fix_emoji
+    |> fix_tag
+  end
+
+  def fix_in_reply_to(%{"inReplyTo" => in_reply_to_id} = object)
+      when not is_nil(in_reply_to_id) do
+    case ActivityPub.fetch_object_from_id(in_reply_to_id) do
+      {:ok, replied_object} ->
+        activity = Activity.get_create_activity_by_object_ap_id(replied_object.data["id"])
+
+        object
+        |> Map.put("inReplyTo", replied_object.data["id"])
+        |> Map.put("inReplyToAtomUri", object["inReplyToAtomUri"] || in_reply_to_id)
+        |> Map.put("inReplyToStatusId", activity.id)
+        |> Map.put("conversation", replied_object.data["context"] || object["conversation"])
+        |> Map.put("context", replied_object.data["context"] || object["conversation"])
+
+      e ->
+        Logger.error("Couldn't fetch #{object["inReplyTo"]} #{inspect(e)}")
+        object
+    end
+  end
+
+  def fix_in_reply_to(object), do: object
+
+  def fix_context(object) do
+    object
+    |> Map.put("context", object["conversation"])
   end
 
   def fix_attachments(object) do
-    attachments = (object["attachment"] || [])
-    |> Enum.map(fn (data) ->
-      url = [%{"type" => "Link", "mediaType" => data["mediaType"], "href" => data["url"]}]
-      Map.put(data, "url", url)
-    end)
+    attachments =
+      (object["attachment"] || [])
+      |> Enum.map(fn data ->
+        url = [%{"type" => "Link", "mediaType" => data["mediaType"], "href" => data["url"]}]
+        Map.put(data, "url", url)
+      end)
 
     object
     |> Map.put("attachment", attachments)
   end
 
+  def fix_emoji(object) do
+    tags = object["tag"] || []
+    emoji = tags |> Enum.filter(fn data -> data["type"] == "Emoji" and data["icon"] end)
+
+    emoji =
+      emoji
+      |> Enum.reduce(%{}, fn data, mapping ->
+        name = data["name"]
+
+        name =
+          if String.starts_with?(name, ":") do
+            name |> String.slice(1..-2)
+          else
+            name
+          end
+
+        mapping |> Map.put(name, data["icon"]["url"])
+      end)
+
+    # we merge mastodon and pleroma emoji into a single mapping, to allow for both wire formats
+    emoji = Map.merge(object["emoji"] || %{}, emoji)
+
+    object
+    |> Map.put("emoji", emoji)
+  end
+
+  def fix_tag(object) do
+    tags =
+      (object["tag"] || [])
+      |> Enum.filter(fn data -> data["type"] == "Hashtag" and data["name"] end)
+      |> Enum.map(fn data -> String.slice(data["name"], 1..-1) end)
+
+    combined = (object["tag"] || []) ++ tags
+
+    object
+    |> Map.put("tag", combined)
+  end
+
   # TODO: validate those with a Ecto scheme
   # - tags
   # - emoji
   def handle_incoming(%{"type" => "Create", "object" => %{"type" => "Note"} = object} = data) do
-    with %User{} = user <- User.get_or_fetch_by_ap_id(data["actor"]) do
+    with nil <- Activity.get_create_activity_by_object_ap_id(object["id"]),
+         %User{} = user <- User.get_or_fetch_by_ap_id(data["actor"]) do
       object = fix_object(data["object"])
+
       params = %{
         to: data["to"],
         object: object,
         actor: user,
-        context: data["object"]["conversation"],
+        context: object["conversation"],
         local: false,
         published: data["published"],
-        additional: Map.take(data, [
-              "cc",
-              "id"
-            ])
+        additional:
+          Map.take(data, [
+            "cc",
+            "id"
+          ])
       }
 
       ActivityPub.create(params)
     else
+      %Activity{} = activity -> {:ok, activity}
       _e -> :error
     end
   end
 
-  def handle_incoming(%{"type" => "Follow", "object" => followed, "actor" => follower, "id" => id} = data) do
+  def handle_incoming(
+        %{"type" => "Follow", "object" => followed, "actor" => follower, "id" => id} = data
+      ) do
     with %User{local: true} = followed <- User.get_cached_by_ap_id(followed),
          %User{} = follower <- User.get_or_fetch_by_ap_id(follower),
          {:ok, activity} <- ActivityPub.follow(follower, followed, id, false) do
       ActivityPub.accept(%{to: [follower.ap_id], actor: followed.ap_id, object: data, local: true})
+
       User.follow(follower, followed)
       {:ok, activity}
     else
@@ -64,29 +145,154 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end
   end
 
-  def handle_incoming(%{"type" => "Like", "object" => object_id, "actor" => actor, "id" => id} = data) do
+  def handle_incoming(
+        %{"type" => "Like", "object" => object_id, "actor" => actor, "id" => id} = _data
+      ) do
     with %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
-         %Object{} = object <- Object.get_by_ap_id(object_id),
-         {:ok, activity, object} <- ActivityPub.like(actor, object, id, false) do
+         {:ok, object} <-
+           get_obj_helper(object_id) || ActivityPub.fetch_object_from_id(object_id),
+         {:ok, activity, _object} <- ActivityPub.like(actor, object, id, false) do
       {:ok, activity}
     else
       _e -> :error
     end
   end
 
-  def handle_incoming(%{"type" => "Announce", "object" => object_id, "actor" => actor, "id" => id} = data) do
+  def handle_incoming(
+        %{"type" => "Announce", "object" => object_id, "actor" => actor, "id" => id} = _data
+      ) do
     with %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
-         {:ok, object} <- get_obj_helper(object_id) || ActivityPub.fetch_object_from_id(object_id),
-         {:ok, activity, object} <- ActivityPub.announce(actor, object, id, false) do
+         {:ok, object} <-
+           get_obj_helper(object_id) || ActivityPub.fetch_object_from_id(object_id),
+         {:ok, activity, _object} <- ActivityPub.announce(actor, object, id, false) do
       {:ok, activity}
     else
       _e -> :error
     end
   end
 
+  def handle_incoming(
+        %{"type" => "Update", "object" => %{"type" => "Person"} = object, "actor" => actor_id} =
+          data
+      ) do
+    with %User{ap_id: ^actor_id} = actor <- User.get_by_ap_id(object["id"]) do
+      {:ok, new_user_data} = ActivityPub.user_data_from_user_object(object)
+
+      banner = new_user_data[:info]["banner"]
+
+      update_data =
+        new_user_data
+        |> Map.take([:name, :bio, :avatar])
+        |> Map.put(:info, Map.merge(actor.info, %{"banner" => banner}))
+
+      actor
+      |> User.upgrade_changeset(update_data)
+      |> User.update_and_set_cache()
+
+      ActivityPub.update(%{
+        local: false,
+        to: data["to"] || [],
+        cc: data["cc"] || [],
+        object: object,
+        actor: actor_id
+      })
+    else
+      e ->
+        Logger.error(e)
+        :error
+    end
+  end
+
+  # TODO: Make secure.
+  def handle_incoming(
+        %{"type" => "Delete", "object" => object_id, "actor" => actor, "id" => _id} = _data
+      ) do
+    object_id =
+      case object_id do
+        %{"id" => id} -> id
+        id -> id
+      end
+
+    with %User{} = _actor <- User.get_or_fetch_by_ap_id(actor),
+         {:ok, object} <-
+           get_obj_helper(object_id) || ActivityPub.fetch_object_from_id(object_id),
+         {:ok, activity} <- ActivityPub.delete(object, false) do
+      {:ok, activity}
+    else
+      _e -> :error
+    end
+  end
+
+  def handle_incoming(
+        %{
+          "type" => "Undo",
+          "object" => %{"type" => "Announce", "object" => object_id},
+          "actor" => actor,
+          "id" => id
+        } = data
+      ) do
+    with %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
+         {:ok, object} <-
+           get_obj_helper(object_id) || ActivityPub.fetch_object_from_id(object_id),
+         {:ok, activity, _, _} <- ActivityPub.unannounce(actor, object, id, false) do
+      {:ok, activity}
+    else
+      e -> :error
+    end
+  end
+
+  def handle_incoming(
+        %{
+          "type" => "Undo",
+          "object" => %{"type" => "Follow", "object" => followed},
+          "actor" => follower,
+          "id" => id
+        } = data
+      ) do
+    with %User{local: true} = followed = User.get_cached_by_ap_id(followed),
+         %User{} = follower = User.get_or_fetch_by_ap_id(follower),
+         {:ok, activity} <- ActivityPub.unfollow(follower, followed, id, false) do
+      User.unfollow(follower, followed)
+      {:ok, activity}
+    else
+      e -> :error
+    end
+  end
+
+  def handle_incoming(
+        %{"type" => "Block", "object" => blocked, "actor" => blocker, "id" => id} = data
+      ) do
+    with %User{local: true} = blocked = User.get_cached_by_ap_id(blocked),
+         %User{} = blocker = User.get_or_fetch_by_ap_id(blocker),
+         {:ok, activity} <- ActivityPub.block(blocker, blocked, id, false) do
+      User.unfollow(blocker, blocked)
+      User.block(blocker, blocked)
+      {:ok, activity}
+    else
+      e -> :error
+    end
+  end
+
+  def handle_incoming(
+        %{
+          "type" => "Undo",
+          "object" => %{"type" => "Like", "object" => object_id},
+          "actor" => actor,
+          "id" => id
+        } = data
+      ) do
+    with %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
+         {:ok, object} <-
+           get_obj_helper(object_id) || ActivityPub.fetch_object_from_id(object_id),
+         {:ok, activity, _, _} <- ActivityPub.unlike(actor, object, id, false) do
+      {:ok, activity}
+    else
+      e -> :error
+    end
+  end
+
   # TODO
   # Accept
-  # Undo
 
   def handle_incoming(_), do: :error
 
@@ -94,35 +300,103 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     if object = Object.get_by_ap_id(id), do: {:ok, object}, else: nil
   end
 
-  @doc
-  """
-  internal -> Mastodon
-  """
-  def prepare_outgoing(%{"type" => "Create", "object" => %{"type" => "Note"} = object} = data) do
-    object = object
+  def set_reply_to_uri(%{"inReplyTo" => inReplyTo} = object) do
+    with false <- String.starts_with?(inReplyTo, "http"),
+         {:ok, %{data: replied_to_object}} <- get_obj_helper(inReplyTo) do
+      Map.put(object, "inReplyTo", replied_to_object["external_url"] || inReplyTo)
+    else
+      _e -> object
+    end
+  end
+
+  def set_reply_to_uri(obj), do: obj
+
+  # Prepares the object of an outgoing create activity.
+  def prepare_object(object) do
+    object
+    |> set_sensitive
+    |> add_hashtags
     |> add_mention_tags
+    |> add_emoji_tags
     |> add_attributed_to
     |> prepare_attachments
+    |> set_conversation
+    |> set_reply_to_uri
+  end
+
+  #  @doc
+  #  """
+  #  internal -> Mastodon
+  #  """
+
+  def prepare_outgoing(%{"type" => "Create", "object" => %{"type" => "Note"} = object} = data) do
+    object =
+      object
+      |> prepare_object
 
-    data = data
-    |> Map.put("object", object)
-    |> Map.put("@context", "https://www.w3.org/ns/activitystreams")
+    data =
+      data
+      |> Map.put("object", object)
+      |> Map.put("@context", "https://www.w3.org/ns/activitystreams")
 
     {:ok, data}
   end
 
-  def prepare_outgoing(%{"type" => type} = data) when type in ["Follow", "Accept", "Like", "Announce"] do
-    data = data
-    |> Map.put("@context", "https://www.w3.org/ns/activitystreams")
+  def prepare_outgoing(%{"type" => _type} = data) do
+    data =
+      data
+      |> maybe_fix_object_url
+      |> Map.put("@context", "https://www.w3.org/ns/activitystreams")
 
     {:ok, data}
   end
 
+  def maybe_fix_object_url(data) do
+    if is_binary(data["object"]) and not String.starts_with?(data["object"], "http") do
+      case ActivityPub.fetch_object_from_id(data["object"]) do
+        {:ok, relative_object} ->
+          if relative_object.data["external_url"] do
+            _data =
+              data
+              |> Map.put("object", relative_object.data["external_url"])
+          else
+            data
+          end
+
+        e ->
+          Logger.error("Couldn't fetch #{data["object"]} #{inspect(e)}")
+          data
+      end
+    else
+      data
+    end
+  end
+
+  def add_hashtags(object) do
+    tags =
+      (object["tag"] || [])
+      |> Enum.map(fn tag ->
+        %{
+          "href" => Pleroma.Web.Endpoint.url() <> "/tags/#{tag}",
+          "name" => "##{tag}",
+          "type" => "Hashtag"
+        }
+      end)
+
+    object
+    |> Map.put("tag", tags)
+  end
+
   def add_mention_tags(object) do
-    mentions = object["to"]
-    |> Enum.map(fn (ap_id) -> User.get_cached_by_ap_id(ap_id) end)
-    |> Enum.filter(&(&1))
-    |> Enum.map(fn(user) -> %{"type" => "Mention", "href" => user.ap_id, "name" => "@#{user.nickname}"} end)
+    recipients = object["to"] ++ (object["cc"] || [])
+
+    mentions =
+      recipients
+      |> Enum.map(fn ap_id -> User.get_cached_by_ap_id(ap_id) end)
+      |> Enum.filter(& &1)
+      |> Enum.map(fn user ->
+        %{"type" => "Mention", "href" => user.ap_id, "name" => "@#{user.nickname}"}
+      end)
 
     tags = object["tag"] || []
 
@@ -130,6 +404,36 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     |> Map.put("tag", tags ++ mentions)
   end
 
+  # TODO: we should probably send mtime instead of unix epoch time for updated
+  def add_emoji_tags(object) do
+    tags = object["tag"] || []
+    emoji = object["emoji"] || []
+
+    out =
+      emoji
+      |> Enum.map(fn {name, url} ->
+        %{
+          "icon" => %{"url" => url, "type" => "Image"},
+          "name" => ":" <> name <> ":",
+          "type" => "Emoji",
+          "updated" => "1970-01-01T00:00:00Z",
+          "id" => url
+        }
+      end)
+
+    object
+    |> Map.put("tag", tags ++ out)
+  end
+
+  def set_conversation(object) do
+    Map.put(object, "conversation", object["context"])
+  end
+
+  def set_sensitive(object) do
+    tags = object["tag"] || []
+    Map.put(object, "sensitive", "nsfw" in tags)
+  end
+
   def add_attributed_to(object) do
     attributedTo = object["attributedTo"] || object["actor"]
 
@@ -138,13 +442,119 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   end
 
   def prepare_attachments(object) do
-    attachments = (object["attachment"] || [])
-    |> Enum.map(fn (data) ->
-      [%{"mediaType" => media_type, "href" => href} | _] = data["url"]
-      %{"url" => href, "mediaType" => media_type, "name" => data["name"], "type" => "Document"}
-    end)
+    attachments =
+      (object["attachment"] || [])
+      |> Enum.map(fn data ->
+        [%{"mediaType" => media_type, "href" => href} | _] = data["url"]
+        %{"url" => href, "mediaType" => media_type, "name" => data["name"], "type" => "Document"}
+      end)
 
     object
     |> Map.put("attachment", attachments)
   end
+
+  defp user_upgrade_task(user) do
+    old_follower_address = User.ap_followers(user)
+
+    q =
+      from(
+        u in User,
+        where: ^old_follower_address in u.following,
+        update: [
+          set: [
+            following:
+              fragment(
+                "array_replace(?,?,?)",
+                u.following,
+                ^old_follower_address,
+                ^user.follower_address
+              )
+          ]
+        ]
+      )
+
+    Repo.update_all(q, [])
+
+    maybe_retire_websub(user.ap_id)
+
+    # Only do this for recent activties, don't go through the whole db.
+    # Only look at the last 1000 activities.
+    since = (Repo.aggregate(Activity, :max, :id) || 0) - 1_000
+
+    q =
+      from(
+        a in Activity,
+        where: ^old_follower_address in a.recipients,
+        where: a.id > ^since,
+        update: [
+          set: [
+            recipients:
+              fragment(
+                "array_replace(?,?,?)",
+                a.recipients,
+                ^old_follower_address,
+                ^user.follower_address
+              )
+          ]
+        ]
+      )
+
+    Repo.update_all(q, [])
+  end
+
+  def upgrade_user_from_ap_id(ap_id, async \\ true) do
+    with %User{local: false} = user <- User.get_by_ap_id(ap_id),
+         {:ok, data} <- ActivityPub.fetch_and_prepare_user_from_ap_id(ap_id) do
+      data =
+        data
+        |> Map.put(:info, Map.merge(user.info, data[:info]))
+
+      already_ap = User.ap_enabled?(user)
+
+      {:ok, user} =
+        User.upgrade_changeset(user, data)
+        |> Repo.update()
+
+      if !already_ap do
+        # This could potentially take a long time, do it in the background
+        if async do
+          Task.start(fn ->
+            user_upgrade_task(user)
+          end)
+        else
+          user_upgrade_task(user)
+        end
+      end
+
+      {:ok, user}
+    else
+      e -> e
+    end
+  end
+
+  def maybe_retire_websub(ap_id) do
+    # some sanity checks
+    if is_binary(ap_id) && String.length(ap_id) > 8 do
+      q =
+        from(
+          ws in Pleroma.Web.Websub.WebsubClientSubscription,
+          where: fragment("? like ?", ws.topic, ^"#{ap_id}%")
+        )
+
+      Repo.delete_all(q)
+    end
+  end
+
+  def maybe_fix_user_url(data) do
+    if is_map(data["url"]) do
+      data = Map.put(data, "url", data["url"]["href"])
+    end
+
+    data
+  end
+
+  def maybe_fix_user_object(data) do
+    data
+    |> maybe_fix_user_url
+  end
 end