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# Pleroma: A lightweight social networking server
# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes do
alias Pleroma.EctoType.ActivityPub.ObjectValidators
alias Pleroma.Maps
alias Pleroma.Object
alias Pleroma.Object.Containment
alias Pleroma.User
alias Pleroma.Web.ActivityPub.Transmogrifier
alias Pleroma.Web.ActivityPub.Utils
require Pleroma.Constants
def cast_and_filter_recipients(message, field, follower_collection, field_fallback \\ []) do
{:ok, data} = ObjectValidators.Recipients.cast(message[field] || field_fallback)
data =
Enum.reject(data, fn x ->
String.ends_with?(x, "/followers") and x != follower_collection
end)
Map.put(message, field, data)
end
def fix_object_defaults(data) do
data = Maps.filter_empty_values(data)
context =
Utils.maybe_create_context(
data["context"] || data["conversation"] || data["inReplyTo"] || data["id"]
)
%User{follower_address: follower_collection} = User.get_cached_by_ap_id(data["attributedTo"])
data
|> Map.put("context", context)
|> cast_and_filter_recipients("to", follower_collection)
|> cast_and_filter_recipients("cc", follower_collection)
|> cast_and_filter_recipients("bto", follower_collection)
|> cast_and_filter_recipients("bcc", follower_collection)
|> Transmogrifier.fix_implicit_addressing(follower_collection)
end
def fix_activity_addressing(activity) do
%User{follower_address: follower_collection} = User.get_cached_by_ap_id(activity["actor"])
activity
|> cast_and_filter_recipients("to", follower_collection)
|> cast_and_filter_recipients("cc", follower_collection)
|> cast_and_filter_recipients("bto", follower_collection)
|> cast_and_filter_recipients("bcc", follower_collection)
|> Transmogrifier.fix_implicit_addressing(follower_collection)
end
def fix_actor(data) do
actor =
data
|> Map.put_new("actor", data["attributedTo"])
|> Containment.get_actor()
data
|> Map.put("actor", actor)
|> Map.put("attributedTo", actor)
end
def fix_activity_context(data, %Object{data: %{"context" => object_context}}) do
data
|> Map.put("context", object_context)
end
def fix_object_action_recipients(%{"actor" => actor} = data, %Object{data: %{"actor" => actor}}) do
to = ((data["to"] || []) -- [actor]) |> Enum.uniq()
Map.put(data, "to", to)
end
def fix_object_action_recipients(data, %Object{data: %{"actor" => actor}}) do
to = ((data["to"] || []) ++ [actor]) |> Enum.uniq()
Map.put(data, "to", to)
end
def fix_quote_url(%{"quoteUrl" => _quote_url} = data), do: data
# Fedibird
# https://github.com/fedibird/mastodon/commit/dbd7ae6cf58a92ec67c512296b4daaea0d01e6ac
def fix_quote_url(%{"quoteUri" => quote_url} = data) do
Map.put(data, "quoteUrl", quote_url)
end
# Old Fedibird (bug)
# https://github.com/fedibird/mastodon/issues/9
def fix_quote_url(%{"quoteURL" => quote_url} = data) do
Map.put(data, "quoteUrl", quote_url)
end
# Misskey fallback
def fix_quote_url(%{"_misskey_quote" => quote_url} = data) do
Map.put(data, "quoteUrl", quote_url)
end
def fix_quote_url(%{"tag" => [_ | _] = tags} = data) do
tag = Enum.find(tags, &object_link_tag?/1)
if not is_nil(tag) do
data
|> Map.put("quoteUrl", tag["href"])
else
data
end
end
def fix_quote_url(data), do: data
# https://codeberg.org/fediverse/fep/src/branch/main/fep/e232/fep-e232.md
def object_link_tag?(%{
"type" => "Link",
"mediaType" => media_type,
"href" => href
})
when media_type in Pleroma.Constants.activity_json_mime_types() and is_binary(href) do
true
end
def object_link_tag?(_), do: false
end

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