Capitalize Atom
[akkoma] / lib / pleroma / web / ostatus / ostatus.ex
index 29291b7a5a7f22d31933bc457ba07ee9ae90a50c..72f5b8d526f1260b80f283afc0ac58e67beb9a1c 100644 (file)
@@ -7,9 +7,9 @@ defmodule Pleroma.Web.OStatus do
 
   alias Pleroma.{Repo, User, Web, Object, Activity}
   alias Pleroma.Web.ActivityPub.ActivityPub
-  alias Pleroma.Web.ActivityPub.Utils
   alias Pleroma.Web.{WebFinger, Websub}
-  alias Pleroma.Web.OStatus.FollowHandler
+  alias Pleroma.Web.OStatus.{FollowHandler, NoteHandler, DeleteHandler}
+  alias Pleroma.Web.ActivityPub.Transmogrifier
 
   def feed_path(user) do
     "#{user.ap_id}/feed.atom"
@@ -23,34 +23,54 @@ defmodule Pleroma.Web.OStatus do
     "#{user.ap_id}/salmon"
   end
 
+  def remote_follow_path do
+    "#{Web.base_url}/ostatus_subscribe?acct={uri}"
+  end
+
   def handle_incoming(xml_string) do
-    doc = parse_document(xml_string)
-    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)
-
-      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' ->
-              with {:ok, activity} <- handle_note(entry, doc), do: activity
-            'http://activitystrea.ms/schema/1.0/comment' ->
-              with {:ok, activity} <- handle_note(entry, doc), do: activity
+    with doc when doc != :error <- parse_document(xml_string) 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)
+        Logger.debug("Handling #{verb}")
+
+        try do
+          case verb do
+            'http://activitystrea.ms/schema/1.0/delete' ->
+              with {:ok, activity} <- DeleteHandler.handle_delete(entry, doc), do: activity
+            '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]
             _ ->
-              Logger.error("Couldn't parse incoming document")
-              nil
+              case object_type do
+                'http://activitystrea.ms/schema/1.0/note' ->
+                  with {:ok, activity} <- NoteHandler.handle_note(entry, doc), do: activity
+                'http://activitystrea.ms/schema/1.0/comment' ->
+                  with {:ok, activity} <- NoteHandler.handle_note(entry, doc), do: activity
+                _ ->
+                  Logger.error("Couldn't parse incoming document")
+                  nil
+              end
           end
-      end
-    end)
-    {:ok, activities}
+        rescue
+          e ->
+            Logger.error("Error occured while handling activity")
+            Logger.error(xml_string)
+          Logger.error(inspect(e))
+          nil
+        end
+      end)
+      |> Enum.filter(&(&1))
+
+      {:ok, activities}
+    else
+      _e -> {:error, []}
+    end
   end
 
   def make_share(entry, doc, retweeted_activity) do
@@ -86,21 +106,20 @@ defmodule Pleroma.Web.OStatus do
     else
       _e ->
         with [object] <- :xmerl_xpath.string('/entry/activity:object', entry) do
-          handle_note(object, object)
+          NoteHandler.handle_note(object, object)
         end
     end
   end
 
-
   def get_or_try_fetching(entry) do
     Logger.debug("Trying to get entry from db")
     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 ->
+    else _ ->
         Logger.debug("Couldn't get, will try to fetch")
         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]} <- fetch_activity_from_url(href) do
           {:ok, favorited_activity}
         else e -> Logger.debug("Couldn't find href: #{inspect(e)}")
         end
@@ -134,116 +153,55 @@ defmodule Pleroma.Web.OStatus do
     |> Enum.filter(&(&1))
   end
 
+  @doc """
+    Gets the content from a an entry.
+  """
   def get_content(entry) do
-    base_content = string_from_xpath("//content", entry)
+    string_from_xpath("//content", entry)
+  end
 
-    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
+  @doc """
+    Get the cw that mastodon uses.
+  """
+  def get_cw(entry) do
+    with cw when not is_nil(cw) <- string_from_xpath("/*/summary", entry) do
+      cw
+    else _e -> nil
     end
   end
 
   def get_tags(entry) do
     :xmerl_xpath.string('//category', entry)
     |> Enum.map(fn (category) -> string_from_xpath("/category/@term", category) end)
+    |> Enum.filter(&(&1))
+    |> Enum.map(&String.downcase/1)
   end
 
-  def handle_note(entry, doc \\ nil) do
-    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 inReplyTo && !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)
-      else
-        Logger.debug("Couldn't find a href link to #{inReplyTo}")
-      end
-    end
-
-    context = (string_from_xpath("//ostatus:conversation[1]", entry) || "") |> String.trim
-
-    attachments = get_attachments(entry)
-
-    context = with %{data: %{"context" => context}} <- Object.get_cached_by_ap_id(inReplyTo) do
-                context
-              else _e ->
-                if String.length(context) > 0 do
-                  context
-                else
-                  Utils.generate_context_id
-                end
-              end
-
-    tags = get_tags(entry)
-
-    to = [
-      "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)
-    |> Enum.map(fn(person) -> string_from_xpath("@href", person) end)
-
-    to = to ++ mentions
-
-    date = string_from_xpath("//published", entry)
-    id = string_from_xpath("//id", entry)
-
-    object = %{
-      "id" => id,
-      "type" => "Note",
-      "to" => to,
-      "content" => content_html,
-      "published" => date,
-      "context" => context,
-      "actor" => actor.ap_id,
-      "attachment" => attachments,
-      "tag" => tags
-    }
-
-    object = if inReplyTo do
-      replied_to_activity = Activity.get_create_activity_by_object_ap_id(inReplyTo)
-      if replied_to_activity do
-        object
-        |> Map.put("inReplyTo", inReplyTo)
-        |> Map.put("inReplyToStatusId", replied_to_activity.id)
-      else
-        object
-        |> Map.put("inReplyTo", inReplyTo)
-      end
-    else
-      object
-    end
-
-    # TODO: Bail out sooner and use transaction.
-    if Object.get_by_ap_id(id) do
-      {:ok, Activity.get_create_activity_by_object_ap_id(id)}
+  def maybe_update(doc, user) do
+    if "true" == string_from_xpath("//author[1]/ap_enabled", doc) do
+      Transmogrifier.upgrade_user_from_ap_id(user.ap_id)
     else
-      ActivityPub.create(to, actor, context, object, %{}, date, false)
+      maybe_update_ostatus(doc, user)
     end
   end
-
-  def maybe_update(doc, user) do
+  def maybe_update_ostatus(doc, user) do
     old_data = %{
       avatar: user.avatar,
       bio: user.bio,
-      name: user.name
+      name: user.name,
+      info: user.info
     }
 
     with false <- user.local,
          avatar <- make_avatar_object(doc),
-         bio when not is_nil(bio) <- string_from_xpath("//author[1]/summary", doc),
-         name when not is_nil(name) <- string_from_xpath("//author[1]/poco:displayName", doc),
-         new_data <- %{avatar: avatar, name: name, bio: bio},
+         bio <- string_from_xpath("//author[1]/summary", doc),
+         name <- string_from_xpath("//author[1]/poco:displayName", doc),
+         info <- Map.put(user.info, "banner", make_avatar_object(doc, "header") || user.info["banner"]),
+         new_data <- %{avatar: avatar || old_data.avatar, name: name || old_data.name, bio: bio || old_data.bio, info: info || old_data.info},
          false <- new_data == old_data do
       change = Ecto.Changeset.change(user, new_data)
       Repo.update(change)
-    else e ->
+    else _ ->
       {:ok, user}
     end
   end
@@ -268,7 +226,7 @@ defmodule Pleroma.Web.OStatus do
     end
   end
 
-  def make_user(uri) do
+  def make_user(uri, update \\ false) do
     with {:ok, info} <- gather_user_info(uri) do
       data = %{
         name: info["name"],
@@ -278,19 +236,18 @@ defmodule Pleroma.Web.OStatus do
         avatar: info["avatar"],
         bio: info["bio"]
       }
-      with %User{} = user <- User.get_by_ap_id(data.ap_id) do
+      with false <- update,
+           %User{} = user <- User.get_by_ap_id(data.ap_id) do
         {:ok, user}
-      else _e ->
-        cs = User.remote_user_creation(data)
-        Repo.insert(cs)
+      else _e -> User.insert_or_update_user(data)
       end
     end
   end
 
   # TODO: Just takes the first one for now.
-  def make_avatar_object(author_doc) do
-    href = string_from_xpath("//author[1]/link[@rel=\"avatar\"]/@href", author_doc)
-    type = string_from_xpath("//author[1]/link[@rel=\"avatar\"]/@type", author_doc)
+  def make_avatar_object(author_doc, rel \\ "avatar") do
+    href = string_from_xpath("//author[1]/link[@rel=\"#{rel}\"]/@href", author_doc)
+    type = string_from_xpath("//author[1]/link[@rel=\"#{rel}\"]/@type", author_doc)
 
     if href do
       %{
@@ -334,19 +291,47 @@ defmodule Pleroma.Web.OStatus do
         [[_, 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"}
+        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_atom_url(url) do
+    with {:ok, %{body: body, status_code: code}} when code in 200..299 <- @httpoison.get(url, [Accept: "application/atom+xml"], follow_redirect: true, timeout: 10000, recv_timeout: 20000) do
+      Logger.debug("Got document from #{url}, handling...")
+      handle_incoming(body)
+    else
+      e ->
+        Logger.debug("Couldn't get #{url}: #{inspect(e)}")
+        e
     end
   end
 
   def fetch_activity_from_html_url(url) do
     Logger.debug("Trying to fetch #{url}")
     with {:ok, %{body: body}} <- @httpoison.get(url, [], follow_redirect: true, timeout: 10000, recv_timeout: 20000),
-         {: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, timeout: 10000, recv_timeout: 20000) do
-      Logger.debug("Got document from #{url}, handling...")
-      handle_incoming(body)
-    else e -> Logger.debug("Couldn't get #{url}: #{inspect(e)}")
+         {:ok, atom_url} <- get_atom_url(body) do
+        fetch_activity_from_atom_url(atom_url)
+    else
+      e ->
+        Logger.debug("Couldn't get #{url}: #{inspect(e)}")
+        e
+    end
+  end
+
+  def fetch_activity_from_url(url) do
+    try do
+      with {:ok, activities} when length(activities) > 0 <- fetch_activity_from_atom_url(url) do
+        {:ok, activities}
+      else
+        _e -> with {:ok, activities} <- fetch_activity_from_html_url(url) do
+                {:ok, activities}
+              end
+      end
+    rescue
+      e ->
+        Logger.debug("Couldn't get #{url}: #{inspect(e)}")
+        {:error, "Couldn't get #{url}: #{inspect(e)}"}
     end
   end
 end