Put HTTPSignatures, WebFinger and ActivityStream alongside with ActivityPub

2020-01-22 22:40:40 +01:00
parent cdb520a95b
commit d1251280c5
28 changed files with 57 additions and 64 deletions
--- a/lib/federation/activity_stream/converter/actor.ex
+++ b/lib/federation/activity_stream/converter/actor.ex
@@ -0,0 +1,116 @@
+defmodule Mobilizon.Federation.ActivityStream.Converter.Actor do
+  @moduledoc """
+  Actor converter.
+
+  This module allows to convert events from ActivityStream format to our own
+  internal one, and back.
+  """
+
+  alias Mobilizon.Actors.Actor, as: ActorModel
+
+  alias Mobilizon.Federation.ActivityPub.Utils
+  alias Mobilizon.Federation.ActivityStream.{Converter, Convertible}
+
+  @behaviour Converter
+
+  defimpl Convertible, for: ActorModel do
+    alias Mobilizon.Federation.ActivityStream.Converter.Actor, as: ActorConverter
+
+    defdelegate model_to_as(actor), to: ActorConverter
+  end
+
+  @doc """
+  Converts an AP object data to our internal data structure.
+  """
+  @impl Converter
+  @spec as_to_model_data(map) :: map
+  def as_to_model_data(data) do
+    avatar =
+      data["icon"]["url"] &&
+        %{
+          "name" => data["icon"]["name"] || "avatar",
+          "url" => MobilizonWeb.MediaProxy.url(data["icon"]["url"])
+        }
+
+    banner =
+      data["image"]["url"] &&
+        %{
+          "name" => data["image"]["name"] || "banner",
+          "url" => MobilizonWeb.MediaProxy.url(data["image"]["url"])
+        }
+
+    actor_data = %{
+      url: data["id"],
+      avatar: avatar,
+      banner: banner,
+      name: data["name"],
+      preferred_username: data["preferredUsername"],
+      summary: data["summary"],
+      keys: data["publicKey"]["publicKeyPem"],
+      inbox_url: data["inbox"],
+      outbox_url: data["outbox"],
+      following_url: data["following"],
+      followers_url: data["followers"],
+      shared_inbox_url: data["endpoints"]["sharedInbox"],
+      domain: URI.parse(data["id"]).host,
+      manually_approves_followers: data["manuallyApprovesFollowers"],
+      type: data["type"]
+    }
+
+    {:ok, actor_data}
+  end
+
+  @doc """
+  Convert an actor struct to an ActivityStream representation.
+  """
+  @impl Converter
+  @spec model_to_as(ActorModel.t()) :: map
+  def model_to_as(%ActorModel{} = actor) do
+    actor_data = %{
+      "id" => actor.url,
+      "type" => actor.type,
+      "preferredUsername" => actor.preferred_username,
+      "name" => actor.name,
+      "summary" => actor.summary,
+      "following" => actor.following_url,
+      "followers" => actor.followers_url,
+      "inbox" => actor.inbox_url,
+      "outbox" => actor.outbox_url,
+      "url" => actor.url,
+      "endpoints" => %{
+        "sharedInbox" => actor.shared_inbox_url
+      },
+      "manuallyApprovesFollowers" => actor.manually_approves_followers,
+      "publicKey" => %{
+        "id" => "#{actor.url}#main-key",
+        "owner" => actor.url,
+        "publicKeyPem" =>
+          if(is_nil(actor.domain) and not is_nil(actor.keys),
+            do: Utils.pem_to_public_key_pem(actor.keys),
+            else: actor.keys
+          )
+      }
+    }
+
+    actor_data =
+      if is_nil(actor.avatar) do
+        actor_data
+      else
+        Map.put(actor_data, "icon", %{
+          "type" => "Image",
+          "mediaType" => actor.avatar.content_type,
+          "url" => actor.avatar.url
+        })
+      end
+
+    if is_nil(actor.banner) do
+      actor_data
+    else
+      Map.put(actor_data, "image", %{
+        "type" => "Image",
+        "mediaType" => actor.banner.content_type,
+        "url" => actor.banner.url
+      })
+    end
+  end
+end