Repair retweets.
[akkoma] / lib / pleroma / web / ostatus / ostatus.ex
index 2fab676631df3f16b7562bb7ac6db905a6d68671..4fb647a39041f4b8b5e292806899db11fa6c0bfe 100644 (file)
@@ -1,11 +1,14 @@
 defmodule Pleroma.Web.OStatus do
+  @httpoison Application.get_env(:pleroma, :httpoison)
+
   import Ecto.Query
   import Pleroma.Web.XML
   require Logger
 
-  alias Pleroma.{Repo, User, Web, Object}
+  alias Pleroma.{Repo, User, Web, Object, Activity}
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.{WebFinger, Websub}
+  alias Pleroma.Web.OStatus.FollowHandler
 
   def feed_path(user) do
     "#{user.ap_id}/feed.atom"
@@ -24,12 +27,16 @@ defmodule Pleroma.Web.OStatus do
     entries = :xmerl_xpath.string('//entry', doc)
 
     activities = Enum.map(entries, fn (entry) ->
-      {:xmlObj, :string, object_type } = :xmerl_xpath.string('string(/entry/activity:object-type[1])', entry)
-      {:xmlObj, :string, verb } = :xmerl_xpath.string('string(/entry/activity:verb[1])', entry)
+      {:xmlObj, :string, object_type} = :xmerl_xpath.string('string(/entry/activity:object-type[1])', entry)
+      {:xmlObj, :string, verb} = :xmerl_xpath.string('string(/entry/activity:verb[1])', entry)
 
       case verb do
+        'http://activitystrea.ms/schema/1.0/follow' ->
+          with {:ok, activity} <- FollowHandler.handle(entry, doc), do: activity
         'http://activitystrea.ms/schema/1.0/share' ->
           with {:ok, activity, retweeted_activity} <- handle_share(entry, doc), do: [activity, retweeted_activity]
+        'http://activitystrea.ms/schema/1.0/favorite' ->
+          with {:ok, activity, favorited_activity} <- handle_favorite(entry, doc), do: [activity, favorited_activity]
         _ ->
           case object_type do
             'http://activitystrea.ms/schema/1.0/note' ->
@@ -47,8 +54,9 @@ defmodule Pleroma.Web.OStatus do
 
   def make_share(entry, doc, retweeted_activity) do
     with {:ok, actor} <- find_make_or_update_user(doc),
-         %Object{} = object <- Object.get_cached_by_ap_id(retweeted_activity.data["object"]["id"]),
-         {:ok, activity, object} = ActivityPub.announce(actor, object, false) do
+         %Object{} = object <- Object.get_by_ap_id(retweeted_activity.data["object"]["id"]),
+         id when not is_nil(id) <- string_from_xpath("/entry/id", entry),
+         {:ok, activity, _object} = ActivityPub.announce(actor, object, id, false) do
       {:ok, activity}
     end
   end
@@ -63,6 +71,36 @@ defmodule Pleroma.Web.OStatus do
     end
   end
 
+  def make_favorite(entry, doc, favorited_activity) do
+    with {:ok, actor} <- find_make_or_update_user(doc),
+         %Object{} = object <- Object.get_by_ap_id(favorited_activity.data["object"]["id"]),
+         id when not is_nil(id) <- string_from_xpath("/entry/id", entry),
+         {:ok, activity, _object} = ActivityPub.like(actor, object, id, false) do
+      {:ok, activity}
+    end
+  end
+
+  def get_or_try_fetching(entry) do
+    with id when not is_nil(id) <- string_from_xpath("//activity:object[1]/id", entry),
+         %Activity{} = activity <- Activity.get_create_activity_by_object_ap_id(id) do
+      {:ok, activity}
+    else _e ->
+        with href when not is_nil(href) <- string_from_xpath("//activity:object[1]/link[@type=\"text/html\"]/@href", entry),
+             {:ok, [favorited_activity]} <- fetch_activity_from_html_url(href) do
+          {:ok, favorited_activity}
+        end
+    end
+  end
+
+  def handle_favorite(entry, doc) do
+    with {:ok, favorited_activity} <- get_or_try_fetching(entry),
+         {:ok, activity} <- make_favorite(entry, doc, favorited_activity) do
+      {:ok, activity, favorited_activity}
+    else
+      e -> {:error, e}
+    end
+  end
+
   def get_attachments(entry) do
     :xmerl_xpath.string('/entry/link[@rel="enclosure"]', entry)
     |> Enum.map(fn (enclosure) ->
@@ -81,13 +119,30 @@ defmodule Pleroma.Web.OStatus do
     |> Enum.filter(&(&1))
   end
 
+  def get_content(entry) do
+    base_content = string_from_xpath("//content", entry)
+
+    with scope when not is_nil(scope) <- string_from_xpath("//mastodon:scope", entry),
+         cw when not is_nil(cw) <- string_from_xpath("//summary", entry) do
+      "<span class='mastodon-cw'>#{cw}</span><br>#{base_content}"
+    else _e -> base_content
+    end
+  end
+
   def handle_note(entry, doc \\ nil) do
-    content_html = string_from_xpath("//content[1]", entry)
+    content_html = get_content(entry)
 
     [author] = :xmerl_xpath.string('//author[1]', doc)
     {:ok, actor} = find_make_or_update_user(author)
     inReplyTo = string_from_xpath("//thr:in-reply-to[1]/@ref", entry)
 
+    if !Object.get_cached_by_ap_id(inReplyTo) do
+      inReplyToHref = string_from_xpath("//thr:in-reply-to[1]/@href", entry)
+      if inReplyToHref do
+        fetch_activity_from_html_url(inReplyToHref)
+      end
+    end
+
     context = (string_from_xpath("//ostatus:conversation[1]", entry) || "") |> String.trim
 
     attachments = get_attachments(entry)
@@ -103,7 +158,8 @@ defmodule Pleroma.Web.OStatus do
               end
 
     to = [
-      "https://www.w3.org/ns/activitystreams#Public"
+      "https://www.w3.org/ns/activitystreams#Public",
+      User.ap_followers(actor)
     ]
 
     mentions = :xmerl_xpath.string('//link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/person"]', entry)
@@ -133,7 +189,7 @@ defmodule Pleroma.Web.OStatus do
 
     # TODO: Bail out sooner and use transaction.
     if Object.get_by_ap_id(id) do
-      {:error, "duplicate activity"}
+      {:ok, Activity.get_create_activity_by_object_ap_id(id)}
     else
       ActivityPub.create(to, actor, context, object, %{}, date, false)
     end
@@ -143,7 +199,7 @@ defmodule Pleroma.Web.OStatus do
     uri = string_from_xpath("//author/uri[1]", doc)
     with {:ok, user} <- find_or_make_user(uri) do
       avatar = make_avatar_object(doc)
-      if user.avatar != avatar do
+      if !user.local && user.avatar != avatar do
         change = Ecto.Changeset.change(user, %{avatar: avatar})
         Repo.update(change)
       else
@@ -154,7 +210,7 @@ defmodule Pleroma.Web.OStatus do
 
   def find_or_make_user(uri) do
     query = from user in User,
-      where: user.local == false and fragment("? @> ?", user.info, ^%{uri: uri})
+      where: user.ap_id == ^uri
 
     user = Repo.one(query)
 
@@ -168,16 +224,14 @@ defmodule Pleroma.Web.OStatus do
   def make_user(uri) do
     with {:ok, info} <- gather_user_info(uri) do
       data = %{
-        local: false,
         name: info["name"],
         nickname: info["nickname"] <> "@" <> info["host"],
         ap_id: info["uri"],
         info: info,
         avatar: info["avatar"]
       }
-      # TODO: Make remote user changeset
-      # SHould enforce fqn nickname
-      Repo.insert(Ecto.Changeset.change(%User{}, data))
+      cs = User.remote_user_creation(data)
+      Repo.insert(cs)
     end
   end
 
@@ -206,8 +260,38 @@ defmodule Pleroma.Web.OStatus do
          {:ok, feed_data} <- Websub.gather_feed_data(webfinger_data["topic"]) do
       {:ok, Map.merge(webfinger_data, feed_data) |> Map.put("fqn", username)}
     else e ->
-      Logger.debug("Couldn't gather info for #{username}")
+      Logger.debug(fn -> "Couldn't gather info for #{username}" end)
       {:error, e}
     end
   end
+
+  # Regex-based 'parsing' so we don't have to pull in a full html parser
+  # It's a hack anyway. Maybe revisit this in the future
+  @mastodon_regex ~r/<link href='(.*)' rel='alternate' type='application\/atom\+xml'>/
+  @gs_regex ~r/<link title=.* href="(.*)" type="application\/atom\+xml" rel="alternate">/
+  @gs_classic_regex ~r/<link rel="alternate" href="(.*)" type="application\/atom\+xml" title=.*>/
+  def get_atom_url(body) do
+    cond do
+      Regex.match?(@mastodon_regex, body) ->
+        [[_, match]] = Regex.scan(@mastodon_regex, body)
+        {:ok, match}
+      Regex.match?(@gs_regex, body) ->
+        [[_, match]] = Regex.scan(@gs_regex, body)
+        {:ok, match}
+      Regex.match?(@gs_classic_regex, body) ->
+        [[_, match]] = Regex.scan(@gs_classic_regex, body)
+        {:ok, match}
+      true ->
+        Logger.debug(fn -> "Couldn't find atom link in #{inspect(body)}" end)
+        {:error, "Couldn't find the atom link"}
+    end
+  end
+
+  def fetch_activity_from_html_url(url) do
+    with {:ok, %{body: body}} <- @httpoison.get(url, [], follow_redirect: true),
+         {:ok, atom_url} <- get_atom_url(body),
+         {:ok, %{status_code: code, body: body}} when code in 200..299 <- @httpoison.get(atom_url, [], follow_redirect: true) do
+      handle_incoming(body)
+    end
+  end
 end