akkoma/lib/pleroma/web/activity_pub/transmogrifier.ex

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# 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.Transmogrifier do
@moduledoc """
A module to handle coding from internal to wire ActivityPub and back.
"""
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alias Pleroma.Activity
alias Pleroma.EctoType.ActivityPub.ObjectValidators
alias Pleroma.Maps
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alias Pleroma.Object
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alias Pleroma.Object.Containment
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alias Pleroma.Repo
alias Pleroma.User
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alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.Builder
alias Pleroma.Web.ActivityPub.ObjectValidator
alias Pleroma.Web.ActivityPub.Pipeline
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alias Pleroma.Web.ActivityPub.Utils
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alias Pleroma.Web.ActivityPub.Visibility
alias Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes
alias Pleroma.Web.Federator
alias Pleroma.Workers.TransmogrifierWorker
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import Ecto.Query
require Pleroma.Constants
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require Logger
@doc """
Modifies an incoming AP object (mastodon format) to our internal format.
"""
def fix_object(object, options \\ []) do
object
|> strip_internal_fields()
|> fix_actor()
|> fix_url()
|> fix_attachments()
|> fix_context()
|> fix_in_reply_to(options)
|> fix_quote_url(options)
|> fix_emoji()
|> fix_tag()
|> fix_content_map()
|> fix_addressing()
|> fix_summary()
end
def fix_summary(%{"summary" => nil} = object) do
Map.put(object, "summary", "")
end
def fix_summary(%{"summary" => _} = object) do
# summary is present, nothing to do
object
end
def fix_summary(object), do: Map.put(object, "summary", "")
defp fix_addressing_list(addrs) do
cond do
is_list(addrs) -> Enum.filter(addrs, &is_binary/1)
is_binary(addrs) -> [addrs]
true -> []
end
end
# Due to JSON-LD simply "Public" and "as:Public" are equivalent to the full URI
# but to simplify later checks we only want to deal with one reperesentation internally
defp normalise_addressing_public_list(map, all_fields)
defp normalise_addressing_public_list(%{} = map, [field | fields]) do
full_uri = Pleroma.Constants.as_public()
map =
if map[field] != nil do
new_fval =
map[field]
|> fix_addressing_list()
|> Enum.map(fn
"Public" -> full_uri
"as:Public" -> full_uri
x -> x
end)
Map.put(map, field, new_fval)
else
map
end
normalise_addressing_public_list(map, fields)
end
defp normalise_addressing_public_list(map, _) do
map
end
defp normalise_addressing_public(map) do
normalise_addressing_public_list(map, ["to", "cc", "bto", "bcc"])
end
# if directMessage flag is set to true, leave the addressing alone
def fix_explicit_addressing(%{"directMessage" => true} = object, _follower_collection),
do: object
def fix_explicit_addressing(%{"to" => to, "cc" => cc} = object, follower_collection) do
explicit_mentions =
Utils.determine_explicit_mentions(object) ++
[Pleroma.Constants.as_public(), follower_collection]
explicit_to = Enum.filter(to, fn x -> x in explicit_mentions end)
explicit_cc = Enum.filter(to, fn x -> x not in explicit_mentions end)
final_cc =
(cc ++ explicit_cc)
|> Enum.filter(& &1)
|> Enum.reject(fn x -> String.ends_with?(x, "/followers") and x != follower_collection end)
|> Enum.uniq()
object
|> Map.put("to", explicit_to)
|> Map.put("cc", final_cc)
end
def fix_addressing_list_key(map, field) do
Map.put(map, field, fix_addressing_list(map[field]))
end
def fix_addressing(object) do
{:ok, %User{follower_address: follower_collection}} =
object
|> Containment.get_actor()
|> User.get_or_fetch_by_ap_id()
object
|> fix_addressing_list_key("to")
|> fix_addressing_list_key("cc")
|> fix_addressing_list_key("bto")
|> fix_addressing_list_key("bcc")
|> fix_explicit_addressing(follower_collection)
|> CommonFixes.fix_implicit_addressing(follower_collection)
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end
def fix_actor(%{"attributedTo" => actor} = object) do
actor = Containment.get_actor(%{"actor" => actor})
# TODO: Remove actor field for Objects
object
|> Map.put("actor", actor)
|> Map.put("attributedTo", actor)
end
def fix_in_reply_to(object, options \\ [])
def fix_in_reply_to(%{"inReplyTo" => in_reply_to} = object, options)
when not is_nil(in_reply_to) do
in_reply_to_id = prepare_in_reply_to(in_reply_to)
depth = (options[:depth] || 0) + 1
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if Federator.allowed_thread_distance?(depth) do
with {:ok, replied_object} <- get_obj_helper(in_reply_to_id, options),
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%Activity{} <- Activity.get_create_by_object_ap_id(replied_object.data["id"]) do
object
|> Map.put("inReplyTo", replied_object.data["id"])
|> Map.put("context", replied_object.data["context"] || object["conversation"])
|> Map.drop(["conversation", "inReplyToAtomUri"])
else
_ ->
object
end
else
object
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end
end
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def fix_in_reply_to(object, _options), do: object
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def fix_quote_url(object, options \\ [])
def fix_quote_url(%{"quoteUri" => quote_url} = object, options)
when not is_nil(quote_url) do
depth = (options[:depth] || 0) + 1
if Federator.allowed_thread_distance?(depth) do
with {:ok, quoted_object} <- get_obj_helper(quote_url, options),
%Activity{} <- Activity.get_create_by_object_ap_id(quoted_object.data["id"]) do
object
|> Map.put("quoteUri", quoted_object.data["id"])
else
e ->
Logger.warning("Couldn't fetch quote@#{inspect(quote_url)}, error: #{inspect(e)}")
object
end
else
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object
end
end
# Soapbox
def fix_quote_url(%{"quoteUrl" => quote_url} = object, options) do
object
|> Map.put("quoteUri", quote_url)
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|> Map.delete("quoteUrl")
|> fix_quote_url(options)
end
# Old Fedibird (bug)
# https://github.com/fedibird/mastodon/issues/9
def fix_quote_url(%{"quoteURL" => quote_url} = object, options) do
object
|> Map.put("quoteUri", quote_url)
|> Map.delete("quoteURL")
|> fix_quote_url(options)
end
def fix_quote_url(%{"_misskey_quote" => quote_url} = object, options) do
object
|> Map.put("quoteUri", quote_url)
|> Map.delete("_misskey_quote")
|> fix_quote_url(options)
end
def fix_quote_url(object, _), do: object
defp prepare_in_reply_to(in_reply_to) do
cond do
is_bitstring(in_reply_to) ->
in_reply_to
is_map(in_reply_to) && is_bitstring(in_reply_to["id"]) ->
in_reply_to["id"]
is_list(in_reply_to) && is_bitstring(Enum.at(in_reply_to, 0)) ->
Enum.at(in_reply_to, 0)
true ->
""
end
end
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def fix_context(object) do
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context = object["context"] || object["conversation"] || Utils.generate_context_id()
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object
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|> Map.put("context", context)
|> Map.drop(["conversation"])
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end
def fix_attachments(%{"attachment" => attachment} = object) when is_list(attachment) do
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attachments =
Enum.map(attachment, fn data ->
url =
cond do
is_list(data["url"]) -> List.first(data["url"])
is_map(data["url"]) -> data["url"]
true -> nil
end
media_type =
cond do
is_map(url) && MIME.extensions(url["mediaType"]) != [] ->
url["mediaType"]
is_bitstring(data["mediaType"]) && MIME.extensions(data["mediaType"]) != [] ->
data["mediaType"]
is_bitstring(data["mimeType"]) && MIME.extensions(data["mimeType"]) != [] ->
data["mimeType"]
true ->
nil
end
href =
cond do
is_map(url) && is_binary(url["href"]) -> url["href"]
is_binary(data["url"]) -> data["url"]
is_binary(data["href"]) -> data["href"]
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true -> nil
end
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if href do
attachment_url =
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%{
"href" => href,
"type" => Map.get(url || %{}, "type", "Link")
}
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|> Maps.put_if_present("mediaType", media_type)
|> Maps.put_if_present("width", (url || %{})["width"] || data["width"])
|> Maps.put_if_present("height", (url || %{})["height"] || data["height"])
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%{
"url" => [attachment_url],
"type" => data["type"] || "Document"
}
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|> Maps.put_if_present("mediaType", media_type)
|> Maps.put_if_present("name", data["name"])
|> Maps.put_if_present("blurhash", data["blurhash"])
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else
nil
end
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end)
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|> Enum.filter(& &1)
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Map.put(object, "attachment", attachments)
end
def fix_attachments(%{"attachment" => attachment} = object) when is_map(attachment) do
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object
|> Map.put("attachment", [attachment])
|> fix_attachments()
end
def fix_attachments(object), do: object
def fix_url(%{"url" => url} = object) when is_map(url) do
Map.put(object, "url", url["href"])
end
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def fix_url(%{"url" => url} = object) when is_list(url) do
first_element = Enum.at(url, 0)
url_string =
cond do
is_bitstring(first_element) -> first_element
is_map(first_element) -> first_element["href"] || ""
true -> ""
end
Map.put(object, "url", url_string)
end
def fix_url(object), do: object
def fix_emoji(%{"tag" => tags} = object) when is_list(tags) do
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emoji =
tags
|> Enum.filter(fn data -> is_map(data) and data["type"] == "Emoji" and data["icon"] end)
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|> Enum.reduce(%{}, fn data, mapping ->
name = String.trim(data["name"], ":")
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Map.put(mapping, name, data["icon"]["url"])
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end)
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Map.put(object, "emoji", emoji)
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end
def fix_emoji(%{"tag" => %{"type" => "Emoji"} = tag} = object) do
name = String.trim(tag["name"], ":")
emoji = %{name => tag["icon"]["url"]}
Map.put(object, "emoji", emoji)
end
def fix_emoji(object), do: object
def fix_tag(%{"tag" => tag} = object) when is_list(tag) do
tags =
tag
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|> Enum.filter(fn data -> data["type"] == "Hashtag" and data["name"] end)
|> Enum.map(fn
%{"name" => "#" <> hashtag} -> String.downcase(hashtag)
%{"name" => hashtag} -> String.downcase(hashtag)
end)
Map.put(object, "tag", tag ++ tags)
end
def fix_tag(%{"tag" => %{} = tag} = object) do
object
|> Map.put("tag", [tag])
|> fix_tag
end
def fix_tag(object), do: object
# content map usually only has one language so this will do for now.
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def fix_content_map(%{"contentMap" => content_map} = object) when is_map(content_map) do
content_groups = Map.to_list(content_map)
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if Enum.empty?(content_groups) do
object
else
{_, content} = Enum.at(content_groups, 0)
Map.put(object, "content", content)
end
end
def fix_content_map(object), do: object
defp fix_type(%{"type" => "Note", "inReplyTo" => reply_id, "name" => _} = object, options)
when is_binary(reply_id) do
options = Keyword.put(options, :fetch, true)
with %Object{data: %{"type" => "Question"}} <- Object.normalize(reply_id, options) do
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Map.put(object, "type", "Answer")
else
_ -> object
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end
end
defp fix_type(object, _options), do: object
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# Reduce the object list to find the reported user.
defp get_reported(objects) do
Enum.reduce_while(objects, nil, fn ap_id, _ ->
with %User{} = user <- User.get_cached_by_ap_id(ap_id) do
{:halt, user}
else
_ -> {:cont, nil}
end
end)
end
def handle_incoming(data, options \\ []) do
data = normalise_addressing_public(data)
data =
if data["object"] != nil do
object = normalise_addressing_public(data["object"])
Map.put(data, "object", object)
else
data
end
handle_incoming_normalised(data, options)
end
defp handle_incoming_normalised(data, options)
# Flag objects are placed ahead of the ID check because Mastodon 2.8 and earlier send them
# with nil ID.
defp handle_incoming_normalised(
%{"type" => "Flag", "object" => objects, "actor" => actor} = data,
_options
) do
with context <- data["context"] || Utils.generate_context_id(),
content <- data["content"] || "",
%User{} = actor <- User.get_cached_by_ap_id(actor),
# Reduce the object list to find the reported user.
%User{} = account <- get_reported(objects),
# Remove the reported user from the object list.
statuses <- Enum.filter(objects, fn ap_id -> ap_id != account.ap_id end) do
%{
actor: actor,
context: context,
account: account,
statuses: statuses,
content: content,
additional: %{"cc" => [account.ap_id]}
}
|> ActivityPub.flag()
end
end
# disallow objects with bogus IDs
defp handle_incoming_normalised(%{"id" => nil}, _options), do: :error
defp handle_incoming_normalised(%{"id" => ""}, _options), do: :error
# length of https:// = 8, should validate better, but good enough for now.
defp handle_incoming_normalised(%{"id" => id}, _options)
when is_binary(id) and byte_size(id) < 8,
do: :error
# Rewrite misskey likes into EmojiReacts
defp handle_incoming_normalised(
%{
"type" => "Like",
"content" => reaction
} = data,
options
) do
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if Pleroma.Emoji.is_unicode_emoji?(reaction) || Pleroma.Emoji.matches_shortcode?(reaction) do
data
|> Map.put("type", "EmojiReact")
|> handle_incoming(options)
else
data
|> Map.delete("content")
|> handle_incoming(options)
end
end
defp handle_incoming_normalised(
%{"type" => "Create", "object" => %{"type" => objtype, "id" => obj_id}} = data,
options
)
when objtype in ~w{Question Answer Audio Video Event Article Note Page} do
fetch_options = Keyword.put(options, :depth, (options[:depth] || 0) + 1)
object =
data["object"]
|> strip_internal_fields()
|> fix_type(fetch_options)
|> fix_in_reply_to(fetch_options)
|> fix_quote_url(fetch_options)
# Only change the Create's context if the object's context has been modified.
data =
if data["object"]["context"] != object["context"] do
data
|> Map.put("object", object)
|> Map.put("context", object["context"])
else
Map.put(data, "object", object)
end
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options = Keyword.put(options, :local, false)
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with {:ok, %User{}} <- ObjectValidator.fetch_actor(data),
nil <- Activity.get_create_by_object_ap_id(obj_id),
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{:ok, activity, _} <- Pipeline.common_pipeline(data, options) do
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{:ok, activity}
else
%Activity{} = activity -> {:ok, activity}
e -> e
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end
end
defp handle_incoming_normalised(%{"type" => type} = data, _options)
when type in ~w{Like EmojiReact Announce Add Remove} do
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with :ok <- ObjectValidator.fetch_actor_and_object(data),
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{:ok, activity, _meta} <- Pipeline.common_pipeline(data, local: false) do
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{:ok, activity}
else
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e ->
{:error, e}
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end
end
defp handle_incoming_normalised(
%{"type" => type} = data,
_options
)
when type in ~w{Update Block Follow Accept Reject} do
with {:ok, %User{}} <- ObjectValidator.fetch_actor(data),
{:ok, activity, _} <-
Pipeline.common_pipeline(data, local: false) do
{:ok, activity}
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end
end
defp handle_incoming_normalised(
%{"type" => "Delete"} = data,
_options
) do
with {:ok, activity, _} <-
Pipeline.common_pipeline(data, local: false) do
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{:ok, activity}
else
{:error, {:validate, _}} = e ->
# Check if we have a create activity for this
with {:ok, object_id} <- ObjectValidators.ObjectID.cast(data["object"]),
%Activity{data: %{"actor" => actor}} <-
Activity.create_by_object_ap_id(object_id) |> Repo.one(),
# We have one, insert a tombstone and retry
{:ok, tombstone_data, _} <- Builder.tombstone(actor, object_id),
{:ok, _tombstone} <- Object.create(tombstone_data) do
handle_incoming(data)
else
_ -> e
end
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end
end
defp handle_incoming_normalised(
%{
"type" => "Undo",
"object" => %{"type" => "Follow", "object" => followed},
"actor" => follower,
"id" => id
} = _data,
_options
) do
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with %User{local: true} = followed <- User.get_cached_by_ap_id(followed),
{:ok, %User{} = follower} <- User.get_or_fetch_by_ap_id(follower),
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{:ok, activity} <- ActivityPub.unfollow(follower, followed, id, false) do
User.unfollow(follower, followed)
{:ok, activity}
else
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_e -> :error
end
end
defp handle_incoming_normalised(
%{
"type" => "Undo",
"object" => %{"type" => type}
} = data,
_options
)
when type in ["Like", "EmojiReact", "Announce", "Block"] do
with {:ok, activity, _} <- Pipeline.common_pipeline(data, local: false) do
{:ok, activity}
end
end
# For Undos that don't have the complete object attached, try to find it in our database.
defp handle_incoming_normalised(
%{
"type" => "Undo",
"object" => object
} = activity,
options
)
when is_binary(object) do
with %Activity{data: data} <- Activity.get_by_ap_id(object) do
activity
|> Map.put("object", data)
|> handle_incoming(options)
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else
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_e -> :error
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end
end
defp handle_incoming_normalised(
%{
"type" => "Move",
"actor" => origin_actor,
"object" => origin_actor,
"target" => target_actor
},
_options
) do
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with %User{} = origin_user <- User.get_cached_by_ap_id(origin_actor),
# Use a dramatically shortened maximum age before refresh here because it is reasonable
# for a user to
# 1. Add the alias to their new account and then
# 2. Press the button on their new account
# within a very short period of time and expect it to work
{:ok, %User{} = target_user} <- User.get_or_fetch_by_ap_id(target_actor, maximum_age: 5),
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true <- origin_actor in target_user.also_known_as do
ActivityPub.move(origin_user, target_user, false)
else
_e -> :error
end
end
defp handle_incoming_normalised(_, _), do: :error
@spec get_obj_helper(String.t(), Keyword.t()) :: {:ok, Object.t()} | nil
def get_obj_helper(id, options \\ []) do
options = Keyword.put(options, :fetch, true)
case Object.normalize(id, options) do
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%Object{} = object -> {:ok, object}
_ -> nil
end
end
@spec get_embedded_obj_helper(String.t() | Object.t(), User.t()) :: {:ok, Object.t()} | nil
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def get_embedded_obj_helper(%{"attributedTo" => attributed_to, "id" => object_id} = data, %User{
ap_id: ap_id
})
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when attributed_to == ap_id do
with {:ok, activity} <-
handle_incoming(%{
"type" => "Create",
"to" => data["to"],
"cc" => data["cc"],
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"actor" => attributed_to,
"object" => data
}) do
{:ok, Object.normalize(activity, fetch: false)}
else
_ -> get_obj_helper(object_id)
end
end
def get_embedded_obj_helper(object_id, _) do
get_obj_helper(object_id)
end
def set_reply_to_uri(%{"inReplyTo" => in_reply_to} = object) when is_binary(in_reply_to) do
with false <- String.starts_with?(in_reply_to, "http"),
{:ok, %{data: replied_to_object}} <- get_obj_helper(in_reply_to) do
Map.put(object, "inReplyTo", replied_to_object["external_url"] || in_reply_to)
else
_e -> object
end
end
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def set_reply_to_uri(obj), do: obj
def set_quote_url(%{"quoteUri" => quote} = object) when is_binary(quote) do
Map.put(object, "quoteUrl", quote)
end
def set_quote_url(obj), do: obj
@doc """
Serialized Mastodon-compatible `replies` collection containing _self-replies_.
Based on Mastodon's ActivityPub::NoteSerializer#replies.
"""
def set_replies(obj_data) do
replies_uris =
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with limit when limit > 0 <-
Pleroma.Config.get([:activitypub, :note_replies_output_limit], 0),
%Object{} = object <- Object.get_cached_by_ap_id(obj_data["id"]) do
object
|> Object.self_replies()
|> select([o], fragment("?->>'id'", o.data))
|> limit(^limit)
|> Repo.all()
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else
_ -> []
end
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set_replies(obj_data, replies_uris)
end
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defp set_replies(obj, []) do
obj
end
defp set_replies(obj, replies_uris) do
replies_collection = %{
"type" => "Collection",
"items" => replies_uris
}
Map.merge(obj, %{"replies" => replies_collection})
end
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def replies(%{"replies" => %{"first" => %{"items" => items}}}) when not is_nil(items) do
items
end
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def replies(%{"replies" => %{"items" => items}}) when not is_nil(items) do
items
end
def replies(_), do: []
# Prepares the object of an outgoing create activity.
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def prepare_object(object) do
object
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|> add_hashtags
|> add_mention_tags
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|> add_emoji_tags
|> add_attributed_to
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|> prepare_attachments
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|> set_conversation
|> set_reply_to_uri
|> set_quote_url()
|> set_replies
|> strip_internal_fields
|> strip_internal_tags
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|> set_type
|> maybe_process_history
end
defp maybe_process_history(%{"formerRepresentations" => %{"orderedItems" => history}} = object) do
processed_history =
Enum.map(
history,
fn
item when is_map(item) -> prepare_object(item)
item -> item
end
)
put_in(object, ["formerRepresentations", "orderedItems"], processed_history)
end
defp maybe_process_history(object) do
object
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end
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# @doc
# """
# internal -> Mastodon
# """
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def prepare_outgoing(%{"type" => activity_type, "object" => object_id} = data)
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when activity_type in ["Create"] do
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object =
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object_id
|> Object.normalize(fetch: false)
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|> Map.get(:data)
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|> prepare_object
data =
data
|> Map.put("object", object)
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|> Map.merge(Utils.make_json_ld_header())
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|> Map.delete("bcc")
{:ok, data}
end
def prepare_outgoing(%{"type" => "Update", "object" => %{"type" => objtype} = object} = data)
when objtype in Pleroma.Constants.updatable_object_types() do
object =
object
|> prepare_object
data =
data
|> Map.put("object", object)
|> Map.merge(Utils.make_json_ld_header())
|> Map.delete("bcc")
{:ok, data}
end
def prepare_outgoing(%{"type" => "Announce", "actor" => ap_id, "object" => object_id} = data) do
object =
object_id
|> Object.normalize(fetch: false)
data =
if Visibility.is_private?(object) && object.data["actor"] == ap_id do
data |> Map.put("object", object |> Map.get(:data) |> prepare_object)
else
data |> maybe_fix_object_url
end
data =
data
|> strip_internal_fields
|> Map.merge(Utils.make_json_ld_header())
|> Map.delete("bcc")
{:ok, data}
end
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# Mastodon Accept/Reject requires a non-normalized object containing the actor URIs,
# because of course it does.
def prepare_outgoing(%{"type" => "Accept"} = data) do
with follow_activity <- Activity.normalize(data["object"]) do
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object = %{
"actor" => follow_activity.actor,
"object" => follow_activity.data["object"],
"id" => follow_activity.data["id"],
"type" => "Follow"
}
data =
data
|> Map.put("object", object)
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|> Map.merge(Utils.make_json_ld_header())
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{:ok, data}
end
end
def prepare_outgoing(%{"type" => "Reject"} = data) do
with follow_activity <- Activity.normalize(data["object"]) do
object = %{
"actor" => follow_activity.actor,
"object" => follow_activity.data["object"],
"id" => follow_activity.data["id"],
"type" => "Follow"
}
data =
data
|> Map.put("object", object)
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|> Map.merge(Utils.make_json_ld_header())
{:ok, data}
end
end
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def prepare_outgoing(%{"type" => _type} = data) do
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data =
data
|> strip_internal_fields
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|> maybe_fix_object_url
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|> Map.merge(Utils.make_json_ld_header())
{:ok, data}
end
def maybe_fix_object_url(%{"object" => object} = data) when is_binary(object) do
with false <- String.starts_with?(object, "http"),
{:fetch, {:ok, relative_object}} <- {:fetch, get_obj_helper(object)},
%{data: %{"external_url" => external_url}} when not is_nil(external_url) <-
relative_object do
Map.put(data, "object", external_url)
else
{:fetch, _} ->
data
_ ->
data
end
end
def maybe_fix_object_url(data), do: data
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def add_hashtags(object) do
tags =
(object["tag"] || [])
|> Enum.map(fn
# Expand internal representation tags into AS2 tags.
tag when is_binary(tag) ->
%{
"href" => Pleroma.Web.Endpoint.url() <> "/tags/#{tag}",
"name" => "##{tag}",
"type" => "Hashtag"
}
# Do not process tags which are already AS2 tag objects.
tag when is_map(tag) ->
tag
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end)
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Map.put(object, "tag", tags)
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end
# TODO These should be added on our side on insertion, it doesn't make much
# sense to regenerate these all the time
def add_mention_tags(object) do
to = object["to"] || []
cc = object["cc"] || []
mentioned = User.get_users_from_set(to ++ cc, local_only: false)
mentions = Enum.map(mentioned, &build_mention_tag/1)
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tags = object["tag"] || []
Map.put(object, "tag", tags ++ mentions)
end
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defp build_mention_tag(%{ap_id: ap_id, nickname: nickname} = _) do
%{"type" => "Mention", "href" => ap_id, "name" => "@#{nickname}"}
end
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def take_emoji_tags(%User{emoji: emoji}) do
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emoji
|> Map.to_list()
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|> Enum.map(&build_emoji_tag/1)
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end
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# TODO: we should probably send mtime instead of unix epoch time for updated
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def add_emoji_tags(%{"emoji" => emoji} = object) do
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tags = object["tag"] || []
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out = Enum.map(emoji, &build_emoji_tag/1)
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Map.put(object, "tag", tags ++ out)
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end
def add_emoji_tags(object), do: object
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defp build_emoji_tag({name, url}) do
%{
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"icon" => %{"url" => "#{URI.encode(url)}", "type" => "Image"},
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"name" => ":" <> name <> ":",
"type" => "Emoji",
"updated" => "1970-01-01T00:00:00Z",
"id" => nil
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}
end
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def set_conversation(object) do
Map.put(object, "conversation", object["context"])
end
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def set_type(%{"type" => "Answer"} = object) do
Map.put(object, "type", "Note")
end
def set_type(object), do: object
def add_attributed_to(object) do
attributed_to = object["attributedTo"] || object["actor"]
Map.put(object, "attributedTo", attributed_to)
end
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def prepare_attachments(object) do
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attachments =
case Map.get(object, "attachment", []) do
[_ | _] = list -> list
_ -> []
end
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attachments =
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attachments
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|> Enum.map(fn data ->
[%{"mediaType" => media_type, "href" => href} = url | _] = data["url"]
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%{
"url" => href,
"mediaType" => media_type,
"name" => data["name"],
"type" => "Document"
}
|> Maps.put_if_present("width", url["width"])
|> Maps.put_if_present("height", url["height"])
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|> Maps.put_if_present("blurhash", data["blurhash"])
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end)
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Map.put(object, "attachment", attachments)
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end
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def strip_internal_fields(object) do
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Map.drop(object, Pleroma.Constants.object_internal_fields())
end
defp strip_internal_tags(%{"tag" => tags} = object) do
tags = Enum.filter(tags, fn x -> is_map(x) end)
Map.put(object, "tag", tags)
end
defp strip_internal_tags(object), do: object
def perform(:user_upgrade, user) do
# we pass a fake user so that the followers collection is stripped away
old_follower_address = User.ap_followers(%User{nickname: user.nickname})
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from(
a in Activity,
where: ^old_follower_address in a.recipients,
update: [
set: [
recipients:
fragment(
"array_replace(?,?,?)",
a.recipients,
^old_follower_address,
^user.follower_address
)
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]
]
)
|> Repo.update_all([])
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end
def upgrade_user_from_ap_id(ap_id) do
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with %User{local: false} = user <- User.get_cached_by_ap_id(ap_id),
{:ok, data} <- ActivityPub.fetch_and_prepare_user_from_ap_id(ap_id),
{:ok, user} <- update_user(user, data) do
ActivityPub.enqueue_pin_fetches(user)
TransmogrifierWorker.enqueue("user_upgrade", %{"user_id" => user.id})
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{:ok, user}
else
%User{} = user -> {:ok, user}
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e -> e
end
end
defp update_user(user, data) do
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user
|> User.remote_user_changeset(data)
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|> User.update_and_set_cache()
end
def maybe_fix_user_url(%{"url" => url} = data) when is_map(url) do
Map.put(data, "url", url["href"])
end
def maybe_fix_user_url(data), do: data
def maybe_fix_user_object(data), do: maybe_fix_user_url(data)
end