538 lines
17 KiB
Elixir
538 lines
17 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.MastodonAPI.StatusView do
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use Pleroma.Web, :view
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require Pleroma.Constants
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alias Pleroma.Activity
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alias Pleroma.HTML
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alias Pleroma.Object
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alias Pleroma.Repo
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alias Pleroma.User
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alias Pleroma.UserRelationship
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alias Pleroma.Web.CommonAPI
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alias Pleroma.Web.CommonAPI.Utils
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alias Pleroma.Web.MastodonAPI.AccountView
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alias Pleroma.Web.MastodonAPI.PollView
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alias Pleroma.Web.MastodonAPI.StatusView
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alias Pleroma.Web.MediaProxy
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alias Pleroma.Web.PleromaAPI.EmojiReactionController
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import Pleroma.Web.ActivityPub.Visibility, only: [get_visibility: 1, visible_for_user?: 2]
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# This is a naive way to do this, just spawning a process per activity
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# to fetch the preview. However it should be fine considering
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# pagination is restricted to 40 activities at a time
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defp fetch_rich_media_for_activities(activities) do
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Enum.each(activities, fn activity ->
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spawn(fn ->
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Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)
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end)
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end)
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end
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# TODO: Add cached version.
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defp get_replied_to_activities([]), do: %{}
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defp get_replied_to_activities(activities) do
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activities
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|> Enum.map(fn
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%{data: %{"type" => "Create"}} = activity ->
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object = Object.normalize(activity, fetch: false)
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object && object.data["inReplyTo"] != "" && object.data["inReplyTo"]
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_ ->
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nil
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end)
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|> Enum.filter(& &1)
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|> Activity.create_by_object_ap_id_with_object()
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|> Repo.all()
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|> Enum.reduce(%{}, fn activity, acc ->
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object = Object.normalize(activity, fetch: false)
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if object, do: Map.put(acc, object.data["id"], activity), else: acc
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end)
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end
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defp get_context_id(%{data: %{"context_id" => context_id}}) when not is_nil(context_id),
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do: context_id
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defp get_context_id(%{data: %{"context" => context}}) when is_binary(context),
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do: Utils.context_to_conversation_id(context)
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defp get_context_id(_), do: nil
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defp reblogged?(activity, user) do
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object = Object.normalize(activity, fetch: false) || %{}
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present?(user && user.ap_id in (object.data["announcements"] || []))
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end
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def render("index.json", opts) do
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reading_user = opts[:for]
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# To do: check AdminAPIControllerTest on the reasons behind nil activities in the list
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activities = Enum.filter(opts.activities, & &1)
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# Start fetching rich media before doing anything else, so that later calls to get the cards
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# only block for timeout in the worst case, as opposed to
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# length(activities_with_links) * timeout
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fetch_rich_media_for_activities(activities)
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replied_to_activities = get_replied_to_activities(activities)
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parent_activities =
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activities
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|> Enum.filter(&(&1.data["type"] == "Announce" && &1.data["object"]))
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|> Enum.map(&Object.normalize(&1, fetch: false).data["id"])
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|> Activity.create_by_object_ap_id()
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|> Activity.with_preloaded_object(:left)
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|> Activity.with_preloaded_bookmark(reading_user)
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|> Activity.with_set_thread_muted_field(reading_user)
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|> Repo.all()
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relationships_opt =
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cond do
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Map.has_key?(opts, :relationships) ->
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opts[:relationships]
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is_nil(reading_user) ->
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UserRelationship.view_relationships_option(nil, [])
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true ->
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# Note: unresolved users are filtered out
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actors =
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(activities ++ parent_activities)
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|> Enum.map(&CommonAPI.get_user(&1.data["actor"], false))
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|> Enum.filter(& &1)
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UserRelationship.view_relationships_option(reading_user, actors, subset: :source_mutes)
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end
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opts =
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opts
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|> Map.put(:replied_to_activities, replied_to_activities)
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|> Map.put(:parent_activities, parent_activities)
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|> Map.put(:relationships, relationships_opt)
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safe_render_many(activities, StatusView, "show.json", opts)
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end
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def render(
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"show.json",
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%{activity: %{data: %{"type" => "Announce", "object" => _object}} = activity} = opts
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) do
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user = CommonAPI.get_user(activity.data["actor"])
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created_at = Utils.to_masto_date(activity.data["published"])
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activity_object = Object.normalize(activity, fetch: false)
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reblogged_parent_activity =
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if opts[:parent_activities] do
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Activity.Queries.find_by_object_ap_id(
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opts[:parent_activities],
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activity_object.data["id"]
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)
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else
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Activity.create_by_object_ap_id(activity_object.data["id"])
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|> Activity.with_preloaded_bookmark(opts[:for])
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|> Activity.with_set_thread_muted_field(opts[:for])
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|> Repo.one()
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end
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reblog_rendering_opts = Map.put(opts, :activity, reblogged_parent_activity)
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reblogged = render("show.json", reblog_rendering_opts)
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favorited = opts[:for] && opts[:for].ap_id in (activity_object.data["likes"] || [])
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bookmarked = Activity.get_bookmark(reblogged_parent_activity, opts[:for]) != nil
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mentions =
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activity.recipients
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|> Enum.map(fn ap_id -> User.get_cached_by_ap_id(ap_id) end)
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|> Enum.filter(& &1)
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|> Enum.map(fn user -> AccountView.render("mention.json", %{user: user}) end)
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%{
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id: to_string(activity.id),
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uri: activity_object.data["id"],
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url: activity_object.data["id"],
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account:
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AccountView.render("show.json", %{
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user: user,
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for: opts[:for]
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}),
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in_reply_to_id: nil,
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in_reply_to_account_id: nil,
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reblog: reblogged,
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content: reblogged[:content] || "",
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created_at: created_at,
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reblogs_count: 0,
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replies_count: 0,
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favourites_count: 0,
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reblogged: reblogged?(reblogged_parent_activity, opts[:for]),
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favourited: present?(favorited),
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bookmarked: present?(bookmarked),
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muted: false,
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pinned: pinned?(activity, user),
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sensitive: false,
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spoiler_text: "",
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visibility: get_visibility(activity),
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media_attachments: reblogged[:media_attachments] || [],
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mentions: mentions,
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tags: reblogged[:tags] || [],
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application: activity_object.data["application"] || nil,
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language: nil,
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emojis: [],
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pleroma: %{
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local: activity.local
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}
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}
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end
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def render("show.json", %{activity: %{data: %{"object" => _object}} = activity} = opts) do
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object = Object.normalize(activity, fetch: false)
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user = CommonAPI.get_user(activity.data["actor"])
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user_follower_address = user.follower_address
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like_count = object.data["like_count"] || 0
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announcement_count = object.data["announcement_count"] || 0
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tags = object.data["tag"] || []
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sensitive = object.data["sensitive"] || Enum.member?(tags, "nsfw")
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tag_mentions =
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tags
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|> Enum.filter(fn tag -> is_map(tag) and tag["type"] == "Mention" end)
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|> Enum.map(fn tag -> tag["href"] end)
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mentions =
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(object.data["to"] ++ tag_mentions)
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|> Enum.uniq()
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|> Enum.map(fn
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Pleroma.Constants.as_public() -> nil
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^user_follower_address -> nil
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ap_id -> User.get_cached_by_ap_id(ap_id)
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end)
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|> Enum.filter(& &1)
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|> Enum.map(fn user -> AccountView.render("mention.json", %{user: user}) end)
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favorited = opts[:for] && opts[:for].ap_id in (object.data["likes"] || [])
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bookmarked = Activity.get_bookmark(activity, opts[:for]) != nil
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client_posted_this_activity = opts[:for] && user.id == opts[:for].id
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expires_at =
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with true <- client_posted_this_activity,
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%Oban.Job{scheduled_at: scheduled_at} <-
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Pleroma.Workers.PurgeExpiredActivity.get_expiration(activity.id) do
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scheduled_at
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else
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_ -> nil
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end
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thread_muted? =
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cond do
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is_nil(opts[:for]) -> false
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is_boolean(activity.thread_muted?) -> activity.thread_muted?
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true -> CommonAPI.thread_muted?(opts[:for], activity)
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end
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attachment_data = object.data["attachment"] || []
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attachments = render_many(attachment_data, StatusView, "attachment.json", as: :attachment)
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created_at = Utils.to_masto_date(object.data["published"])
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reply_to = get_reply_to(activity, opts)
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reply_to_user = reply_to && CommonAPI.get_user(reply_to.data["actor"])
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content =
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object
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|> render_content()
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content_html =
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content
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|> HTML.get_cached_scrubbed_html_for_activity(
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User.html_filter_policy(opts[:for]),
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activity,
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"mastoapi:content"
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)
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content_plaintext =
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content
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|> HTML.get_cached_stripped_html_for_activity(
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activity,
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"mastoapi:content"
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)
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summary = object.data["summary"] || ""
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card = render("card.json", Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity))
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url =
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if user.local do
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Pleroma.Web.Router.Helpers.o_status_url(Pleroma.Web.Endpoint, :notice, activity)
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else
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object.data["url"] || object.data["external_url"] || object.data["id"]
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end
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direct_conversation_id =
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with {_, nil} <- {:direct_conversation_id, opts[:direct_conversation_id]},
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{_, true} <- {:include_id, opts[:with_direct_conversation_id]},
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{_, %User{} = for_user} <- {:for_user, opts[:for]} do
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Activity.direct_conversation_id(activity, for_user)
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else
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{:direct_conversation_id, participation_id} when is_integer(participation_id) ->
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participation_id
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_e ->
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nil
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end
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emoji_reactions =
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object.data
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|> Map.get("reactions", [])
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|> EmojiReactionController.filter_allowed_users(
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opts[:for],
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Map.get(opts, :with_muted, false)
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)
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|> Stream.map(fn {emoji, users} ->
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build_emoji_map(emoji, users, opts[:for])
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end)
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|> Enum.to_list()
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# Status muted state (would do 1 request per status unless user mutes are preloaded)
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muted =
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thread_muted? ||
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UserRelationship.exists?(
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get_in(opts, [:relationships, :user_relationships]),
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:mute,
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opts[:for],
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user,
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fn for_user, user -> User.mutes?(for_user, user) end
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)
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%{
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id: to_string(activity.id),
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uri: object.data["id"],
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url: url,
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account:
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AccountView.render("show.json", %{
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user: user,
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for: opts[:for]
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}),
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in_reply_to_id: reply_to && to_string(reply_to.id),
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in_reply_to_account_id: reply_to_user && to_string(reply_to_user.id),
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reblog: nil,
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card: card,
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content: content_html,
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text: opts[:with_source] && object.data["source"],
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created_at: created_at,
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reblogs_count: announcement_count,
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replies_count: object.data["repliesCount"] || 0,
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favourites_count: like_count,
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reblogged: reblogged?(activity, opts[:for]),
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favourited: present?(favorited),
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bookmarked: present?(bookmarked),
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muted: muted,
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pinned: pinned?(activity, user),
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sensitive: sensitive,
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spoiler_text: summary,
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visibility: get_visibility(object),
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media_attachments: attachments,
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poll: render(PollView, "show.json", object: object, for: opts[:for]),
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mentions: mentions,
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tags: build_tags(tags),
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application: object.data["application"] || nil,
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language: nil,
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emojis: build_emojis(object.data["emoji"]),
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pleroma: %{
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local: activity.local,
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conversation_id: get_context_id(activity),
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in_reply_to_account_acct: reply_to_user && reply_to_user.nickname,
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content: %{"text/plain" => content_plaintext},
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spoiler_text: %{"text/plain" => summary},
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expires_at: expires_at,
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direct_conversation_id: direct_conversation_id,
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thread_muted: thread_muted?,
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emoji_reactions: emoji_reactions,
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parent_visible: visible_for_user?(reply_to, opts[:for])
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}
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}
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end
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def render("show.json", _) do
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nil
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end
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def render("card.json", %{rich_media: rich_media, page_url: page_url}) do
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page_url_data = URI.parse(page_url)
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page_url_data =
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if is_binary(rich_media["url"]) do
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URI.merge(page_url_data, URI.parse(rich_media["url"]))
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else
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page_url_data
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end
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page_url = page_url_data |> to_string
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image_url =
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if is_binary(rich_media["image"]) do
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URI.merge(page_url_data, URI.parse(rich_media["image"]))
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|> to_string
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end
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%{
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type: "link",
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provider_name: page_url_data.host,
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provider_url: page_url_data.scheme <> "://" <> page_url_data.host,
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url: page_url,
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image: image_url |> MediaProxy.url(),
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title: rich_media["title"] || "",
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description: rich_media["description"] || "",
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pleroma: %{
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opengraph: rich_media
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}
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}
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end
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def render("card.json", _), do: nil
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def render("attachment.json", %{attachment: attachment}) do
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[attachment_url | _] = attachment["url"]
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media_type = attachment_url["mediaType"] || attachment_url["mimeType"] || "image"
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href = attachment_url["href"] |> MediaProxy.url()
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href_preview = attachment_url["href"] |> MediaProxy.preview_url()
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type =
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cond do
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String.contains?(media_type, "image") -> "image"
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String.contains?(media_type, "video") -> "video"
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String.contains?(media_type, "audio") -> "audio"
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true -> "unknown"
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end
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<<hash_id::signed-32, _rest::binary>> = :crypto.hash(:md5, href)
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%{
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id: to_string(attachment["id"] || hash_id),
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url: href,
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remote_url: href,
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preview_url: href_preview,
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text_url: href,
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type: type,
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description: attachment["name"],
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pleroma: %{mime_type: media_type},
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blurhash: attachment["blurhash"]
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}
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end
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def render("context.json", %{activity: activity, activities: activities, user: user}) do
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%{ancestors: ancestors, descendants: descendants} =
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activities
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|> Enum.reverse()
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|> Enum.group_by(fn %{id: id} -> if id < activity.id, do: :ancestors, else: :descendants end)
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|> Map.put_new(:ancestors, [])
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|> Map.put_new(:descendants, [])
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%{
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ancestors: render("index.json", for: user, activities: ancestors, as: :activity),
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descendants: render("index.json", for: user, activities: descendants, as: :activity)
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}
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end
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def get_reply_to(activity, %{replied_to_activities: replied_to_activities}) do
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object = Object.normalize(activity, fetch: false)
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with nil <- replied_to_activities[object.data["inReplyTo"]] do
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# If user didn't participate in the thread
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Activity.get_in_reply_to_activity(activity)
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end
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end
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def get_reply_to(%{data: %{"object" => _object}} = activity, _) do
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object = Object.normalize(activity, fetch: false)
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if object.data["inReplyTo"] && object.data["inReplyTo"] != "" do
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Activity.get_create_by_object_ap_id(object.data["inReplyTo"])
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else
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nil
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end
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end
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def render_content(%{data: %{"name" => name}} = object) when not is_nil(name) and name != "" do
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url = object.data["url"] || object.data["id"]
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"<p><a href=\"#{url}\">#{name}</a></p>#{object.data["content"]}"
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end
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def render_content(object), do: object.data["content"] || ""
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@doc """
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Builds a dictionary tags.
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## Examples
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iex> Pleroma.Web.MastodonAPI.StatusView.build_tags(["fediverse", "nextcloud"])
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[{"name": "fediverse", "url": "/tag/fediverse"},
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{"name": "nextcloud", "url": "/tag/nextcloud"}]
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"""
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@spec build_tags(list(any())) :: list(map())
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def build_tags(object_tags) when is_list(object_tags) do
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object_tags
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|> Enum.filter(&is_binary/1)
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|> Enum.map(&%{name: &1, url: "#{Pleroma.Web.base_url()}/tag/#{URI.encode(&1)}"})
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end
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def build_tags(_), do: []
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@doc """
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Builds list emojis.
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Arguments: `nil` or list tuple of name and url.
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Returns list emojis.
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## Examples
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iex> Pleroma.Web.MastodonAPI.StatusView.build_emojis([{"2hu", "corndog.png"}])
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[%{shortcode: "2hu", static_url: "corndog.png", url: "corndog.png", visible_in_picker: false}]
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"""
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@spec build_emojis(nil | list(tuple())) :: list(map())
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def build_emojis(nil), do: []
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def build_emojis(emojis) do
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emojis
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|> Enum.map(fn {name, url} ->
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name = HTML.strip_tags(name)
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url =
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url
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|> HTML.strip_tags()
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|> MediaProxy.url()
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%{shortcode: name, url: url, static_url: url, visible_in_picker: false}
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end)
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end
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defp present?(nil), do: false
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defp present?(false), do: false
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defp present?(_), do: true
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defp pinned?(%Activity{id: id}, %User{pinned_activities: pinned_activities}),
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do: id in pinned_activities
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defp build_emoji_map(emoji, users, current_user) do
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%{
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name: emoji,
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count: length(users),
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me: !!(current_user && current_user.ap_id in users)
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}
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end
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end
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