# Pleroma: A lightweight social networking server # Copyright © 2017-2020 Pleroma Authors # SPDX-License-Identifier: AGPL-3.0-only defmodule Pleroma.Web.MastodonAPI.StatusView do use Pleroma.Web, :view require Pleroma.Constants alias Pleroma.Activity alias Pleroma.HTML alias Pleroma.Object alias Pleroma.Repo alias Pleroma.User alias Pleroma.UserRelationship alias Pleroma.Web.CommonAPI alias Pleroma.Web.CommonAPI.Utils alias Pleroma.Web.MastodonAPI.AccountView alias Pleroma.Web.MastodonAPI.PollView alias Pleroma.Web.MastodonAPI.StatusView alias Pleroma.Web.MediaProxy import Pleroma.Web.ActivityPub.Visibility, only: [get_visibility: 1, visible_for_user?: 2] # This is a naive way to do this, just spawning a process per activity # to fetch the preview. However it should be fine considering # pagination is restricted to 40 activities at a time defp fetch_rich_media_for_activities(activities) do Enum.each(activities, fn activity -> spawn(fn -> Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity) end) end) end # TODO: Add cached version. defp get_replied_to_activities([]), do: %{} defp get_replied_to_activities(activities) do activities |> Enum.map(fn %{data: %{"type" => "Create"}} = activity -> object = Object.normalize(activity) object && object.data["inReplyTo"] != "" && object.data["inReplyTo"] _ -> nil end) |> Enum.filter(& &1) |> Activity.create_by_object_ap_id_with_object() |> Repo.all() |> Enum.reduce(%{}, fn activity, acc -> object = Object.normalize(activity) if object, do: Map.put(acc, object.data["id"], activity), else: acc end) end def get_user(ap_id, fake_record_fallback \\ true) do cond do user = User.get_cached_by_ap_id(ap_id) -> user user = User.get_by_guessed_nickname(ap_id) -> user fake_record_fallback -> # TODO: refactor (fake records is never a good idea) User.error_user(ap_id) true -> nil end end defp get_context_id(%{data: %{"context_id" => context_id}}) when not is_nil(context_id), do: context_id defp get_context_id(%{data: %{"context" => context}}) when is_binary(context), do: Utils.context_to_conversation_id(context) defp get_context_id(_), do: nil defp reblogged?(activity, user) do object = Object.normalize(activity) || %{} present?(user && user.ap_id in (object.data["announcements"] || [])) end def render("index.json", opts) do reading_user = opts[:for] # To do: check AdminAPIControllerTest on the reasons behind nil activities in the list activities = Enum.filter(opts.activities, & &1) # Start fetching rich media before doing anything else, so that later calls to get the cards # only block for timeout in the worst case, as opposed to # length(activities_with_links) * timeout fetch_rich_media_for_activities(activities) replied_to_activities = get_replied_to_activities(activities) parent_activities = activities |> Enum.filter(&(&1.data["type"] == "Announce" && &1.data["object"])) |> Enum.map(&Object.normalize(&1).data["id"]) |> Activity.create_by_object_ap_id() |> Activity.with_preloaded_object(:left) |> Activity.with_preloaded_bookmark(reading_user) |> Activity.with_set_thread_muted_field(reading_user) |> Repo.all() relationships_opt = cond do Map.has_key?(opts, :relationships) -> opts[:relationships] is_nil(reading_user) -> UserRelationship.view_relationships_option(nil, []) true -> # Note: unresolved users are filtered out actors = (activities ++ parent_activities) |> Enum.map(&get_user(&1.data["actor"], false)) |> Enum.filter(& &1) UserRelationship.view_relationships_option(reading_user, actors, subset: :source_mutes) end opts = opts |> Map.put(:replied_to_activities, replied_to_activities) |> Map.put(:parent_activities, parent_activities) |> Map.put(:relationships, relationships_opt) safe_render_many(activities, StatusView, "show.json", opts) end def render( "show.json", %{activity: %{data: %{"type" => "Announce", "object" => _object}} = activity} = opts ) do user = get_user(activity.data["actor"]) created_at = Utils.to_masto_date(activity.data["published"]) activity_object = Object.normalize(activity) reblogged_parent_activity = if opts[:parent_activities] do Activity.Queries.find_by_object_ap_id( opts[:parent_activities], activity_object.data["id"] ) else Activity.create_by_object_ap_id(activity_object.data["id"]) |> Activity.with_preloaded_bookmark(opts[:for]) |> Activity.with_set_thread_muted_field(opts[:for]) |> Repo.one() end reblog_rendering_opts = Map.put(opts, :activity, reblogged_parent_activity) reblogged = render("show.json", reblog_rendering_opts) favorited = opts[:for] && opts[:for].ap_id in (activity_object.data["likes"] || []) bookmarked = Activity.get_bookmark(reblogged_parent_activity, opts[:for]) != nil mentions = activity.recipients |> Enum.map(fn ap_id -> User.get_cached_by_ap_id(ap_id) end) |> Enum.filter(& &1) |> Enum.map(fn user -> AccountView.render("mention.json", %{user: user}) end) %{ id: to_string(activity.id), uri: activity_object.data["id"], url: activity_object.data["id"], account: AccountView.render("show.json", %{ user: user, for: opts[:for] }), in_reply_to_id: nil, in_reply_to_account_id: nil, reblog: reblogged, content: reblogged[:content] || "", created_at: created_at, reblogs_count: 0, replies_count: 0, favourites_count: 0, reblogged: reblogged?(reblogged_parent_activity, opts[:for]), favourited: present?(favorited), bookmarked: present?(bookmarked), muted: false, pinned: pinned?(activity, user), sensitive: false, spoiler_text: "", visibility: get_visibility(activity), media_attachments: reblogged[:media_attachments] || [], mentions: mentions, tags: reblogged[:tags] || [], application: %{ name: "Web", website: nil }, language: nil, emojis: [], pleroma: %{ local: activity.local } } end def render("show.json", %{activity: %{data: %{"object" => _object}} = activity} = opts) do object = Object.normalize(activity) user = get_user(activity.data["actor"]) user_follower_address = user.follower_address like_count = object.data["like_count"] || 0 announcement_count = object.data["announcement_count"] || 0 tags = object.data["tag"] || [] sensitive = object.data["sensitive"] || Enum.member?(tags, "nsfw") tag_mentions = tags |> Enum.filter(fn tag -> is_map(tag) and tag["type"] == "Mention" end) |> Enum.map(fn tag -> tag["href"] end) mentions = (object.data["to"] ++ tag_mentions) |> Enum.uniq() |> Enum.map(fn Pleroma.Constants.as_public() -> nil ^user_follower_address -> nil ap_id -> User.get_cached_by_ap_id(ap_id) end) |> Enum.filter(& &1) |> Enum.map(fn user -> AccountView.render("mention.json", %{user: user}) end) favorited = opts[:for] && opts[:for].ap_id in (object.data["likes"] || []) bookmarked = Activity.get_bookmark(activity, opts[:for]) != nil client_posted_this_activity = opts[:for] && user.id == opts[:for].id expires_at = with true <- client_posted_this_activity, %Oban.Job{scheduled_at: scheduled_at} <- Pleroma.Workers.PurgeExpiredActivity.get_expiration(activity.id) do scheduled_at else _ -> nil end thread_muted? = cond do is_nil(opts[:for]) -> false is_boolean(activity.thread_muted?) -> activity.thread_muted? true -> CommonAPI.thread_muted?(opts[:for], activity) end attachment_data = object.data["attachment"] || [] attachments = render_many(attachment_data, StatusView, "attachment.json", as: :attachment) created_at = Utils.to_masto_date(object.data["published"]) reply_to = get_reply_to(activity, opts) reply_to_user = reply_to && get_user(reply_to.data["actor"]) content = object |> render_content() content_html = content |> HTML.get_cached_scrubbed_html_for_activity( User.html_filter_policy(opts[:for]), activity, "mastoapi:content" ) content_plaintext = content |> HTML.get_cached_stripped_html_for_activity( activity, "mastoapi:content" ) summary = object.data["summary"] || "" card = render("card.json", Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)) url = if user.local do Pleroma.Web.Router.Helpers.o_status_url(Pleroma.Web.Endpoint, :notice, activity) else object.data["url"] || object.data["external_url"] || object.data["id"] end direct_conversation_id = with {_, nil} <- {:direct_conversation_id, opts[:direct_conversation_id]}, {_, true} <- {:include_id, opts[:with_direct_conversation_id]}, {_, %User{} = for_user} <- {:for_user, opts[:for]} do Activity.direct_conversation_id(activity, for_user) else {:direct_conversation_id, participation_id} when is_integer(participation_id) -> participation_id _e -> nil end emoji_reactions = with %{data: %{"reactions" => emoji_reactions}} <- object do Enum.map(emoji_reactions, fn [emoji, users] when is_list(users) -> build_emoji_map(emoji, users, opts[:for]) {emoji, users} when is_list(users) -> build_emoji_map(emoji, users, opts[:for]) _ -> nil end) |> Enum.reject(&is_nil/1) else _ -> [] end # Status muted state (would do 1 request per status unless user mutes are preloaded) muted = thread_muted? || UserRelationship.exists?( get_in(opts, [:relationships, :user_relationships]), :mute, opts[:for], user, fn for_user, user -> User.mutes?(for_user, user) end ) %{ id: to_string(activity.id), uri: object.data["id"], url: url, account: AccountView.render("show.json", %{ user: user, for: opts[:for] }), in_reply_to_id: reply_to && to_string(reply_to.id), in_reply_to_account_id: reply_to_user && to_string(reply_to_user.id), reblog: nil, card: card, content: content_html, text: opts[:with_source] && object.data["source"], created_at: created_at, reblogs_count: announcement_count, replies_count: object.data["repliesCount"] || 0, favourites_count: like_count, reblogged: reblogged?(activity, opts[:for]), favourited: present?(favorited), bookmarked: present?(bookmarked), muted: muted, pinned: pinned?(activity, user), sensitive: sensitive, spoiler_text: summary, visibility: get_visibility(object), media_attachments: attachments, poll: render(PollView, "show.json", object: object, for: opts[:for]), mentions: mentions, tags: build_tags(tags), application: %{ name: "Web", website: nil }, language: nil, emojis: build_emojis(object.data["emoji"]), pleroma: %{ local: activity.local, conversation_id: get_context_id(activity), in_reply_to_account_acct: reply_to_user && reply_to_user.nickname, content: %{"text/plain" => content_plaintext}, spoiler_text: %{"text/plain" => summary}, expires_at: expires_at, direct_conversation_id: direct_conversation_id, thread_muted: thread_muted?, emoji_reactions: emoji_reactions, parent_visible: visible_for_user?(reply_to, opts[:for]) } } end def render("show.json", _) do nil end def render("card.json", %{rich_media: rich_media, page_url: page_url}) do page_url_data = URI.parse(page_url) page_url_data = if is_binary(rich_media["url"]) do URI.merge(page_url_data, URI.parse(rich_media["url"])) else page_url_data end page_url = page_url_data |> to_string image_url = if is_binary(rich_media["image"]) do URI.merge(page_url_data, URI.parse(rich_media["image"])) |> to_string end %{ type: "link", provider_name: page_url_data.host, provider_url: page_url_data.scheme <> "://" <> page_url_data.host, url: page_url, image: image_url |> MediaProxy.url(), title: rich_media["title"] || "", description: rich_media["description"] || "", pleroma: %{ opengraph: rich_media } } end def render("card.json", _), do: nil def render("attachment.json", %{attachment: attachment}) do [attachment_url | _] = attachment["url"] media_type = attachment_url["mediaType"] || attachment_url["mimeType"] || "image" href = attachment_url["href"] |> MediaProxy.url() href_preview = attachment_url["href"] |> MediaProxy.preview_url() type = cond do String.contains?(media_type, "image") -> "image" String.contains?(media_type, "video") -> "video" String.contains?(media_type, "audio") -> "audio" true -> "unknown" end <> = :crypto.hash(:md5, href) %{ id: to_string(attachment["id"] || hash_id), url: href, remote_url: href, preview_url: href_preview, text_url: href, type: type, description: attachment["name"], pleroma: %{mime_type: media_type} } end def render("context.json", %{activity: activity, activities: activities, user: user}) do %{ancestors: ancestors, descendants: descendants} = activities |> Enum.reverse() |> Enum.group_by(fn %{id: id} -> if id < activity.id, do: :ancestors, else: :descendants end) |> Map.put_new(:ancestors, []) |> Map.put_new(:descendants, []) %{ ancestors: render("index.json", for: user, activities: ancestors, as: :activity), descendants: render("index.json", for: user, activities: descendants, as: :activity) } end def get_reply_to(activity, %{replied_to_activities: replied_to_activities}) do object = Object.normalize(activity) with nil <- replied_to_activities[object.data["inReplyTo"]] do # If user didn't participate in the thread Activity.get_in_reply_to_activity(activity) end end def get_reply_to(%{data: %{"object" => _object}} = activity, _) do object = Object.normalize(activity) if object.data["inReplyTo"] && object.data["inReplyTo"] != "" do Activity.get_create_by_object_ap_id(object.data["inReplyTo"]) else nil end end def render_content(%{data: %{"name" => name}} = object) when not is_nil(name) and name != "" do url = object.data["url"] || object.data["id"] "

#{name}

#{object.data["content"]}" end def render_content(object), do: object.data["content"] || "" @doc """ Builds a dictionary tags. ## Examples iex> Pleroma.Web.MastodonAPI.StatusView.build_tags(["fediverse", "nextcloud"]) [{"name": "fediverse", "url": "/tag/fediverse"}, {"name": "nextcloud", "url": "/tag/nextcloud"}] """ @spec build_tags(list(any())) :: list(map()) def build_tags(object_tags) when is_list(object_tags) do object_tags |> Enum.filter(&is_binary/1) |> Enum.map(&%{name: &1, url: "/tag/#{URI.encode(&1)}"}) end def build_tags(_), do: [] @doc """ Builds list emojis. Arguments: `nil` or list tuple of name and url. Returns list emojis. ## Examples iex> Pleroma.Web.MastodonAPI.StatusView.build_emojis([{"2hu", "corndog.png"}]) [%{shortcode: "2hu", static_url: "corndog.png", url: "corndog.png", visible_in_picker: false}] """ @spec build_emojis(nil | list(tuple())) :: list(map()) def build_emojis(nil), do: [] def build_emojis(emojis) do emojis |> Enum.map(fn {name, url} -> name = HTML.strip_tags(name) url = url |> HTML.strip_tags() |> MediaProxy.url() %{shortcode: name, url: url, static_url: url, visible_in_picker: false} end) end defp present?(nil), do: false defp present?(false), do: false defp present?(_), do: true defp pinned?(%Activity{id: id}, %User{pinned_activities: pinned_activities}), do: id in pinned_activities defp build_emoji_map(emoji, users, current_user) do %{ name: emoji, count: length(users), me: !!(current_user && current_user.ap_id in users) } end end