akkoma/lib/pleroma/web/activity_pub/object_validators/article_note_page_validator.ex

198 lines
5.7 KiB
Elixir

# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.ObjectValidators.ArticleNotePageValidator do
use Ecto.Schema
alias Pleroma.User
alias Pleroma.EctoType.ActivityPub.ObjectValidators
alias Pleroma.Web.CommonAPI.Utils
alias Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes
alias Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
alias Pleroma.Web.ActivityPub.Transmogrifier
import Ecto.Changeset
require Logger
@primary_key false
@derive Jason.Encoder
embedded_schema do
quote do
unquote do
import Elixir.Pleroma.Web.ActivityPub.ObjectValidators.CommonFields
message_fields()
object_fields()
status_object_fields()
end
end
field(:replies, {:array, ObjectValidators.ObjectID}, default: [])
field(:source, :map)
field(:content_map, :map)
end
def cast_and_apply(data) do
data
|> cast_data
|> apply_action(:insert)
end
def cast_and_validate(data) do
data
|> cast_data()
|> validate_data()
end
def cast_data(data) do
%__MODULE__{}
|> changeset(data)
end
defp fix_url(%{"url" => url} = data) when is_bitstring(url), do: data
defp fix_url(%{"url" => url} = data) when is_map(url), do: Map.put(data, "url", url["href"])
defp fix_url(data), do: data
defp fix_tag(%{"tag" => tag} = data) when is_list(tag) do
Map.put(data, "tag", Enum.filter(tag, &is_map/1))
end
defp fix_tag(%{"tag" => tag} = data) when is_map(tag), do: Map.put(data, "tag", [tag])
defp fix_tag(data), do: Map.drop(data, ["tag"])
defp fix_replies(%{"replies" => replies} = data) when is_list(replies), do: data
defp fix_replies(%{"replies" => %{"first" => first}} = data) do
with {:ok, replies} <- Akkoma.Collections.Fetcher.fetch_collection(first) do
Map.put(data, "replies", replies)
else
{:error, _} ->
Logger.error("Could not fetch replies for #{first}")
Map.put(data, "replies", [])
end
end
defp fix_replies(%{"replies" => %{"items" => replies}} = data) when is_list(replies),
do: Map.put(data, "replies", replies)
defp fix_replies(data), do: Map.delete(data, "replies")
defp remote_mention_resolver(
%{"id" => ap_id, "tag" => tags},
"@" <> nickname = mention,
buffer,
opts,
acc
) do
initial_host =
ap_id
|> URI.parse()
|> Map.get(:host)
with mention_tag <-
Enum.find(tags, fn t ->
t["type"] == "Mention" &&
(t["name"] == mention || mention == "#{t["name"]}@#{initial_host}")
end),
false <- is_nil(mention_tag),
{:ok, %User{} = user} <- User.get_or_fetch_by_ap_id(mention_tag["href"]) do
link = Pleroma.Formatter.mention_tag(user, nickname, opts)
{link, %{acc | mentions: MapSet.put(acc.mentions, {"@" <> nickname, user})}}
else
_ -> {buffer, acc}
end
end
# https://github.com/misskey-dev/misskey/pull/8787
# Misskey has an awful tendency to drop all custom formatting when it sends remotely
# So this basically reprocesses their MFM source
defp fix_misskey_content(
%{"source" => %{"mediaType" => "text/x.misskeymarkdown", "content" => content}} = object
)
when is_binary(content) do
mention_handler = fn nick, buffer, opts, acc ->
remote_mention_resolver(object, nick, buffer, opts, acc)
end
{linked, _, _} =
Utils.format_input(content, "text/x.misskeymarkdown", mention_handler: mention_handler)
Map.put(object, "content", linked)
end
defp fix_misskey_content(%{"_misskey_content" => content} = object) when is_binary(content) do
mention_handler = fn nick, buffer, opts, acc ->
remote_mention_resolver(object, nick, buffer, opts, acc)
end
{linked, _, _} =
Utils.format_input(content, "text/x.misskeymarkdown", mention_handler: mention_handler)
object
|> Map.put("source", %{
"content" => content,
"mediaType" => "text/x.misskeymarkdown"
})
|> Map.put("content", linked)
|> Map.delete("_misskey_content")
end
defp fix_misskey_content(data), do: data
defp fix_source(%{"source" => source} = object) when is_binary(source) do
object
|> Map.put("source", %{"content" => source})
end
defp fix_source(object), do: object
defp fix_content_map_languages(%{"contentMap" => content_map} = object)
when is_map(content_map) do
# Only allow valid languages
content_map =
content_map
|> Enum.reject(fn {lang, _content} ->
!Pleroma.ISO639.valid_alpha2?(lang)
end)
Map.put(object, "contentMap", content_map)
end
defp fix_content_map_languages(object), do: object
defp fix(data) do
data
|> CommonFixes.fix_actor()
|> CommonFixes.fix_object_defaults()
|> fix_url()
|> fix_tag()
|> fix_replies()
|> fix_source()
|> fix_misskey_content()
|> Transmogrifier.fix_attachments()
|> Transmogrifier.fix_emoji()
|> Transmogrifier.fix_content_map()
|> fix_content_map_languages()
end
def changeset(struct, data) do
data = fix(data)
struct
|> cast(data, __schema__(:fields) -- [:attachment, :tag])
|> cast_embed(:attachment)
|> cast_embed(:tag)
end
defp validate_data(data_cng) do
data_cng
|> validate_inclusion(:type, ["Article", "Note", "Page"])
|> validate_required([:id, :actor, :attributedTo, :type, :context])
|> CommonValidations.validate_any_presence([:cc, :to])
|> CommonValidations.validate_fields_match([:actor, :attributedTo])
|> CommonValidations.validate_actor_presence()
|> CommonValidations.validate_host_match()
end
end