distraction.party/lib/pleroma/web/activity_pub/transmogrifier.ex

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# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 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.
"""
alias Pleroma.Activity
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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
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.Utils
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alias Pleroma.Web.ActivityPub.Visibility
alias Pleroma.Web.Federator
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import Ecto.Query
require Logger
@doc """
Modifies an incoming AP object (mastodon format) to our internal format.
"""
def fix_object(object, options \\ []) do
object
|> fix_actor
|> fix_url
|> fix_attachments
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|> fix_context
|> fix_in_reply_to(options)
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|> fix_emoji
|> fix_tag
|> fix_content_map
|> fix_likes
|> fix_addressing
|> fix_summary
|> fix_type(options)
end
def fix_summary(%{"summary" => nil} = object) do
object
|> Map.put("summary", "")
end
def fix_summary(%{"summary" => _} = object) do
# summary is present, nothing to do
object
end
def fix_summary(object) do
object
|> Map.put("summary", "")
end
def fix_addressing_list(map, field) do
cond do
is_binary(map[field]) ->
Map.put(map, field, [map[field]])
is_nil(map[field]) ->
Map.put(map, field, [])
true ->
map
end
end
def fix_explicit_addressing(
%{"to" => to, "cc" => cc} = object,
explicit_mentions,
follower_collection
) do
explicit_to =
to
|> Enum.filter(fn x -> x in explicit_mentions end)
explicit_cc =
to
|> Enum.filter(fn x -> x not in explicit_mentions end)
final_cc =
(cc ++ explicit_cc)
|> 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_explicit_addressing(object, _explicit_mentions, _followers_collection), do: object
# if directMessage flag is set to true, leave the addressing alone
def fix_explicit_addressing(%{"directMessage" => true} = object), do: object
def fix_explicit_addressing(object) do
explicit_mentions =
object
|> Utils.determine_explicit_mentions()
follower_collection = User.get_cached_by_ap_id(Containment.get_actor(object)).follower_address
explicit_mentions =
explicit_mentions ++ ["https://www.w3.org/ns/activitystreams#Public", follower_collection]
fix_explicit_addressing(object, explicit_mentions, follower_collection)
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end
# if as:Public is addressed, then make sure the followers collection is also addressed
# so that the activities will be delivered to local users.
def fix_implicit_addressing(%{"to" => to, "cc" => cc} = object, followers_collection) do
recipients = to ++ cc
if followers_collection not in recipients do
cond do
"https://www.w3.org/ns/activitystreams#Public" in cc ->
to = to ++ [followers_collection]
Map.put(object, "to", to)
"https://www.w3.org/ns/activitystreams#Public" in to ->
cc = cc ++ [followers_collection]
Map.put(object, "cc", cc)
true ->
object
end
else
object
end
end
def fix_implicit_addressing(object, _), do: object
def fix_addressing(object) do
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{:ok, %User{} = user} = User.get_or_fetch_by_ap_id(object["actor"])
followers_collection = User.ap_followers(user)
object
|> fix_addressing_list("to")
|> fix_addressing_list("cc")
|> fix_addressing_list("bto")
|> fix_addressing_list("bcc")
|> fix_explicit_addressing()
|> fix_implicit_addressing(followers_collection)
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end
def fix_actor(%{"attributedTo" => actor} = object) do
object
|> Map.put("actor", Containment.get_actor(%{"actor" => actor}))
end
# Check for standardisation
# This is what Peertube does
# curl -H 'Accept: application/activity+json' $likes | jq .totalItems
# Prismo returns only an integer (count) as "likes"
def fix_likes(%{"likes" => likes} = object) when not is_map(likes) do
object
|> Map.put("likes", [])
|> Map.put("like_count", 0)
end
def fix_likes(object) do
object
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 =
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)
# Maybe I should output an error too?
true ->
""
end
object = Map.put(object, "inReplyToAtomUri", in_reply_to_id)
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if Federator.allowed_incoming_reply_depth?(options[:depth]) do
case get_obj_helper(in_reply_to_id, options) do
{:ok, replied_object} ->
with %Activity{} = _activity <-
Activity.get_create_by_object_ap_id(replied_object.data["id"]) do
object
|> Map.put("inReplyTo", replied_object.data["id"])
|> Map.put("inReplyToAtomUri", object["inReplyToAtomUri"] || in_reply_to_id)
|> Map.put("conversation", replied_object.data["context"] || object["conversation"])
|> Map.put("context", replied_object.data["context"] || object["conversation"])
else
e ->
Logger.error("Couldn't fetch \"#{inspect(in_reply_to_id)}\", error: #{inspect(e)}")
object
end
e ->
Logger.error("Couldn't fetch \"#{inspect(in_reply_to_id)}\", error: #{inspect(e)}")
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_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.put("conversation", context)
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end
def fix_attachments(%{"attachment" => attachment} = object) when is_list(attachment) do
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attachments =
attachment
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|> Enum.map(fn data ->
media_type = data["mediaType"] || data["mimeType"]
href = data["url"] || data["href"]
url = [%{"type" => "Link", "mediaType" => media_type, "href" => href}]
data
|> Map.put("mediaType", media_type)
|> Map.put("url", url)
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end)
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object
|> Map.put("attachment", attachments)
end
def fix_attachments(%{"attachment" => attachment} = object) when is_map(attachment) do
Map.put(object, "attachment", [attachment])
|> fix_attachments()
end
def fix_attachments(object), do: object
def fix_url(%{"url" => url} = object) when is_map(url) do
object
|> Map.put("url", url["href"])
end
def fix_url(%{"type" => "Video", "url" => url} = object) when is_list(url) do
first_element = Enum.at(url, 0)
link_element =
url
|> Enum.filter(fn x -> is_map(x) end)
|> Enum.filter(fn x -> x["mimeType"] == "text/html" end)
|> Enum.at(0)
object
|> Map.put("attachment", [first_element])
|> Map.put("url", link_element["href"])
end
def fix_url(%{"type" => object_type, "url" => url} = object)
when object_type != "Video" and 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
object
|> Map.put("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 -> data["type"] == "Emoji" and data["icon"] end)
emoji =
emoji
|> Enum.reduce(%{}, fn data, mapping ->
name = String.trim(data["name"], ":")
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mapping |> Map.put(name, data["icon"]["url"])
end)
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# we merge mastodon and pleroma emoji into a single mapping, to allow for both wire formats
emoji = Map.merge(object["emoji"] || %{}, emoji)
object
|> Map.put("emoji", emoji)
end
def fix_emoji(%{"tag" => %{"type" => "Emoji"} = tag} = object) do
name = String.trim(tag["name"], ":")
emoji = %{name => tag["icon"]["url"]}
object
|> Map.put("emoji", emoji)
end
def fix_emoji(object), do: object
def fix_tag(%{"tag" => tag} = object) when is_list(tag) do
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tags =
tag
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|> Enum.filter(fn data -> data["type"] == "Hashtag" and data["name"] end)
|> Enum.map(fn data -> String.slice(data["name"], 1..-1) end)
combined = tag ++ tags
object
|> Map.put("tag", combined)
end
def fix_tag(%{"tag" => %{"type" => "Hashtag", "name" => hashtag} = tag} = object) do
combined = [tag, String.slice(hashtag, 1..-1)]
object
|> Map.put("tag", combined)
end
def fix_tag(%{"tag" => %{} = tag} = object), do: Map.put(object, "tag", [tag])
def fix_tag(object), do: object
# content map usually only has one language so this will do for now.
def fix_content_map(%{"contentMap" => content_map} = object) do
content_groups = Map.to_list(content_map)
{_, content} = Enum.at(content_groups, 0)
object
|> Map.put("content", content)
end
def fix_content_map(object), do: object
def fix_type(object, options \\ [])
def fix_type(%{"inReplyTo" => reply_id} = object, options) when is_binary(reply_id) do
reply =
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if Federator.allowed_incoming_reply_depth?(options[:depth]) do
Object.normalize(reply_id, true)
end
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if reply && (reply.data["type"] == "Question" and object["name"]) do
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Map.put(object, "type", "Answer")
else
object
end
end
def fix_type(object, _), do: object
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defp mastodon_follow_hack(%{"id" => id, "actor" => follower_id}, followed) do
with true <- id =~ "follows",
%User{local: true} = follower <- User.get_cached_by_ap_id(follower_id),
%Activity{} = activity <- Utils.fetch_latest_follow(follower, followed) do
{:ok, activity}
else
_ -> {:error, nil}
end
end
defp mastodon_follow_hack(_, _), do: {:error, nil}
defp get_follow_activity(follow_object, followed) do
with object_id when not is_nil(object_id) <- Utils.get_ap_id(follow_object),
{_, %Activity{} = activity} <- {:activity, Activity.get_by_ap_id(object_id)} do
{:ok, activity}
else
# Can't find the activity. This might a Mastodon 2.3 "Accept"
{:activity, nil} ->
mastodon_follow_hack(follow_object, followed)
_ ->
{:error, nil}
end
end
def handle_incoming(data, options \\ [])
# Flag objects are placed ahead of the ID check because Mastodon 2.8 and earlier send them
# with nil ID.
def handle_incoming(%{"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 <-
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),
# Remove the reported user from the object list.
statuses <- Enum.filter(objects, fn ap_id -> ap_id != account.ap_id end) do
params = %{
actor: actor,
context: context,
account: account,
statuses: statuses,
content: content,
additional: %{
"cc" => [account.ap_id]
}
}
ActivityPub.flag(params)
end
end
# disallow objects with bogus IDs
def handle_incoming(%{"id" => nil}, _options), do: :error
def handle_incoming(%{"id" => ""}, _options), do: :error
# length of https:// = 8, should validate better, but good enough for now.
def handle_incoming(%{"id" => id}, _options) when not (is_binary(id) and length(id) > 8),
do: :error
# TODO: validate those with a Ecto scheme
# - tags
# - emoji
def handle_incoming(
%{"type" => "Create", "object" => %{"type" => objtype} = object} = data,
options
)
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when objtype in ["Article", "Note", "Video", "Page", "Question", "Answer"] do
actor = Containment.get_actor(data)
data =
Map.put(data, "actor", actor)
|> fix_addressing
with nil <- Activity.get_create_by_object_ap_id(object["id"]),
{:ok, %User{} = user} <- User.get_or_fetch_by_ap_id(data["actor"]) do
options = Keyword.put(options, :depth, (options[:depth] || 0) + 1)
object = fix_object(data["object"], options)
params = %{
to: data["to"],
object: object,
actor: user,
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context: object["conversation"],
local: false,
published: data["published"],
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additional:
Map.take(data, [
"cc",
"directMessage",
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"id"
])
}
ActivityPub.create(params)
else
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%Activity{} = activity -> {:ok, activity}
_e -> :error
end
end
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def handle_incoming(
%{"type" => "Follow", "object" => followed, "actor" => follower, "id" => id} = data,
_options
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) do
with %User{local: true} = followed <- User.get_cached_by_ap_id(followed),
{:ok, %User{} = follower} <- User.get_or_fetch_by_ap_id(follower),
{:ok, activity} <- ActivityPub.follow(follower, followed, id, false) do
with deny_follow_blocked <- Pleroma.Config.get([:user, :deny_follow_blocked]),
{_, false} <-
{:user_blocked, User.blocks?(followed, follower) && deny_follow_blocked},
{_, false} <- {:user_locked, User.locked?(followed)},
{_, {:ok, follower}} <- {:follow, User.follow(follower, followed)},
{_, {:ok, _}} <-
{:follow_state_update, Utils.update_follow_state_for_all(activity, "accept")} do
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ActivityPub.accept(%{
to: [follower.ap_id],
actor: followed,
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object: data,
local: true
})
else
{:user_blocked, true} ->
{:ok, _} = Utils.update_follow_state_for_all(activity, "reject")
ActivityPub.reject(%{
to: [follower.ap_id],
actor: followed,
object: data,
local: true
})
{:follow, {:error, _}} ->
{:ok, _} = Utils.update_follow_state_for_all(activity, "reject")
ActivityPub.reject(%{
to: [follower.ap_id],
actor: followed,
object: data,
local: true
})
{:user_locked, true} ->
:noop
end
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{:ok, activity}
else
_e ->
:error
end
end
def handle_incoming(
%{"type" => "Accept", "object" => follow_object, "actor" => _actor, "id" => _id} = data,
_options
) do
with actor <- Containment.get_actor(data),
{:ok, %User{} = followed} <- User.get_or_fetch_by_ap_id(actor),
{:ok, follow_activity} <- get_follow_activity(follow_object, followed),
{:ok, follow_activity} <- Utils.update_follow_state_for_all(follow_activity, "accept"),
%User{local: true} = follower <- User.get_cached_by_ap_id(follow_activity.data["actor"]),
{:ok, _follower} = User.follow(follower, followed) do
ActivityPub.accept(%{
to: follow_activity.data["to"],
type: "Accept",
actor: followed,
object: follow_activity.data["id"],
local: false
})
else
_e -> :error
end
end
def handle_incoming(
%{"type" => "Reject", "object" => follow_object, "actor" => _actor, "id" => _id} = data,
_options
) do
with actor <- Containment.get_actor(data),
{:ok, %User{} = followed} <- User.get_or_fetch_by_ap_id(actor),
{:ok, follow_activity} <- get_follow_activity(follow_object, followed),
{:ok, follow_activity} <- Utils.update_follow_state_for_all(follow_activity, "reject"),
%User{local: true} = follower <- User.get_cached_by_ap_id(follow_activity.data["actor"]),
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{:ok, activity} <-
ActivityPub.reject(%{
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to: follow_activity.data["to"],
type: "Reject",
actor: followed,
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object: follow_activity.data["id"],
local: false
}) do
User.unfollow(follower, followed)
{:ok, activity}
else
_e -> :error
end
end
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def handle_incoming(
%{"type" => "Like", "object" => object_id, "actor" => _actor, "id" => id} = data,
_options
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) do
with actor <- Containment.get_actor(data),
{:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
{:ok, object} <- get_obj_helper(object_id),
{:ok, activity, _object} <- ActivityPub.like(actor, object, id, false) do
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{:ok, activity}
else
_e -> :error
end
end
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def handle_incoming(
%{"type" => "Announce", "object" => object_id, "actor" => _actor, "id" => id} = data,
_options
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) do
with actor <- Containment.get_actor(data),
{:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
{:ok, object} <- get_obj_helper(object_id),
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public <- Visibility.is_public?(data),
{:ok, activity, _object} <- ActivityPub.announce(actor, object, id, false, public) do
{:ok, activity}
else
_e -> :error
end
end
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def handle_incoming(
%{"type" => "Update", "object" => %{"type" => object_type} = object, "actor" => actor_id} =
data,
_options
)
when object_type in ["Person", "Application", "Service", "Organization"] do
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with %User{ap_id: ^actor_id} = actor <- User.get_cached_by_ap_id(object["id"]) do
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{:ok, new_user_data} = ActivityPub.user_data_from_user_object(object)
banner = new_user_data[:info]["banner"]
locked = new_user_data[:info]["locked"] || false
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update_data =
new_user_data
|> Map.take([:name, :bio, :avatar])
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|> Map.put(:info, %{"banner" => banner, "locked" => locked})
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actor
|> User.upgrade_changeset(update_data)
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|> User.update_and_set_cache()
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ActivityPub.update(%{
local: false,
to: data["to"] || [],
cc: data["cc"] || [],
object: object,
actor: actor_id
})
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else
e ->
Logger.error(e)
:error
end
end
# TODO: We presently assume that any actor on the same origin domain as the object being
# deleted has the rights to delete that object. A better way to validate whether or not
# the object should be deleted is to refetch the object URI, which should return either
# an error or a tombstone. This would allow us to verify that a deletion actually took
# place.
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def handle_incoming(
%{"type" => "Delete", "object" => object_id, "actor" => actor, "id" => _id} = data,
_options
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) do
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object_id = Utils.get_ap_id(object_id)
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with actor <- Containment.get_actor(data),
{:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
{:ok, object} <- get_obj_helper(object_id),
:ok <- Containment.contain_origin(actor.ap_id, object.data),
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{:ok, activity} <- ActivityPub.delete(object, false) do
{:ok, activity}
else
nil ->
case User.get_cached_by_ap_id(object_id) do
%User{ap_id: ^actor} = user ->
{:ok, followers} = User.get_followers(user)
Enum.each(followers, fn follower ->
User.unfollow(follower, user)
end)
{:ok, friends} = User.get_friends(user)
Enum.each(friends, fn followed ->
User.unfollow(user, followed)
end)
User.invalidate_cache(user)
Repo.delete(user)
nil ->
:error
end
_e ->
:error
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end
end
def handle_incoming(
%{
"type" => "Undo",
"object" => %{"type" => "Announce", "object" => object_id},
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"actor" => _actor,
"id" => id
} = data,
_options
) do
with actor <- Containment.get_actor(data),
{:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
{:ok, object} <- get_obj_helper(object_id),
{:ok, activity, _} <- ActivityPub.unannounce(actor, object, id, false) do
{:ok, activity}
else
_e -> :error
end
end
def handle_incoming(
%{
"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
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def handle_incoming(
%{
"type" => "Undo",
"object" => %{"type" => "Block", "object" => blocked},
"actor" => blocker,
"id" => id
} = _data,
_options
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) do
with true <- Pleroma.Config.get([:activitypub, :accept_blocks]),
%User{local: true} = blocked <- User.get_cached_by_ap_id(blocked),
{:ok, %User{} = blocker} <- User.get_or_fetch_by_ap_id(blocker),
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{:ok, activity} <- ActivityPub.unblock(blocker, blocked, id, false) do
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User.unblock(blocker, blocked)
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{:ok, activity}
else
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_e -> :error
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end
end
def handle_incoming(
%{"type" => "Block", "object" => blocked, "actor" => blocker, "id" => id} = _data,
_options
) do
with true <- Pleroma.Config.get([:activitypub, :accept_blocks]),
%User{local: true} = blocked = User.get_cached_by_ap_id(blocked),
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{:ok, %User{} = blocker} = User.get_or_fetch_by_ap_id(blocker),
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{:ok, activity} <- ActivityPub.block(blocker, blocked, id, false) do
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User.unfollow(blocker, blocked)
User.block(blocker, blocked)
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{:ok, activity}
else
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_e -> :error
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end
end
def handle_incoming(
%{
"type" => "Undo",
"object" => %{"type" => "Like", "object" => object_id},
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"actor" => _actor,
"id" => id
} = data,
_options
) do
with actor <- Containment.get_actor(data),
{:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
{:ok, object} <- get_obj_helper(object_id),
{:ok, activity, _, _} <- ActivityPub.unlike(actor, object, id, false) do
{:ok, activity}
else
_e -> :error
end
end
def handle_incoming(_, _), do: :error
def get_obj_helper(id, options \\ []) do
if object = Object.normalize(id, true, options), do: {:ok, object}, else: nil
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
# Prepares the object of an outgoing create activity.
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def prepare_object(object) do
object
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|> set_sensitive
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|> add_hashtags
|> add_mention_tags
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|> add_emoji_tags
|> add_attributed_to
|> add_likes
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|> prepare_attachments
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|> set_conversation
|> set_reply_to_uri
|> strip_internal_fields
|> strip_internal_tags
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|> set_type
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end
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# @doc
# """
# internal -> Mastodon
# """
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def prepare_outgoing(%{"type" => "Create", "object" => object_id} = data) do
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object =
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object_id
|> Object.normalize()
|> 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
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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(data) do
if is_binary(data["object"]) and not String.starts_with?(data["object"], "http") do
case get_obj_helper(data["object"]) do
{:ok, relative_object} ->
if relative_object.data["external_url"] do
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_data =
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data
|> Map.put("object", relative_object.data["external_url"])
else
data
end
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e ->
Logger.error("Couldn't fetch #{data["object"]} #{inspect(e)}")
data
end
else
data
end
end
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def add_hashtags(object) do
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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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object
|> Map.put("tag", tags)
end
def add_mention_tags(object) do
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mentions =
object
|> Utils.get_notified_from_object()
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|> Enum.map(fn user ->
%{"type" => "Mention", "href" => user.ap_id, "name" => "@#{user.nickname}"}
end)
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tags = object["tag"] || []
object
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|> Map.put("tag", tags ++ mentions)
end
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def add_emoji_tags(%User{info: %{"emoji" => _emoji} = user_info} = object) do
user_info = add_emoji_tags(user_info)
object
|> Map.put(:info, user_info)
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 =
emoji
|> Enum.map(fn {name, url} ->
%{
"icon" => %{"url" => url, "type" => "Image"},
"name" => ":" <> name <> ":",
"type" => "Emoji",
"updated" => "1970-01-01T00:00:00Z",
"id" => url
}
end)
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object
|> Map.put("tag", tags ++ out)
end
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def add_emoji_tags(object) do
object
end
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def set_conversation(object) do
Map.put(object, "conversation", object["context"])
end
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def set_sensitive(object) do
tags = object["tag"] || []
Map.put(object, "sensitive", "nsfw" in tags)
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"]
object
|> Map.put("attributedTo", attributed_to)
end
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def add_likes(%{"id" => id, "like_count" => likes} = object) do
likes = %{
"id" => "#{id}/likes",
"first" => "#{id}/likes?page=1",
"type" => "OrderedCollection",
"totalItems" => likes
}
object
|> Map.put("likes", likes)
end
def add_likes(object) do
object
end
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def prepare_attachments(object) do
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attachments =
(object["attachment"] || [])
|> Enum.map(fn data ->
[%{"mediaType" => media_type, "href" => href} | _] = data["url"]
%{"url" => href, "mediaType" => media_type, "name" => data["name"], "type" => "Document"}
end)
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object
|> Map.put("attachment", attachments)
end
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defp strip_internal_fields(object) do
object
|> Map.drop([
"like_count",
"announcements",
"announcement_count",
"emoji",
"context_id",
"deleted_activity_id"
])
end
defp strip_internal_tags(%{"tag" => tags} = object) do
tags =
tags
|> Enum.filter(fn x -> is_map(x) end)
object
|> Map.put("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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q =
from(
u in User,
where: ^old_follower_address in u.following,
update: [
set: [
following:
fragment(
"array_replace(?,?,?)",
u.following,
^old_follower_address,
^user.follower_address
)
]
]
)
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Repo.update_all(q, [])
maybe_retire_websub(user.ap_id)
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q =
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(q, [])
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),
already_ap <- User.ap_enabled?(user),
{:ok, user} <- user |> User.upgrade_changeset(data) |> User.update_and_set_cache() do
unless already_ap do
PleromaJobQueue.enqueue(:transmogrifier, __MODULE__, [:user_upgrade, user])
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end
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if Pleroma.Config.get([:instance, :external_user_synchronization]) do
update_following_followers_counters(user)
end
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{:ok, user}
else
%User{} = user -> {:ok, user}
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e -> e
end
end
def maybe_retire_websub(ap_id) do
# some sanity checks
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if is_binary(ap_id) && String.length(ap_id) > 8 do
q =
from(
ws in Pleroma.Web.Websub.WebsubClientSubscription,
where: fragment("? like ?", ws.topic, ^"#{ap_id}%")
)
Repo.delete_all(q)
end
end
def maybe_fix_user_url(data) do
if is_map(data["url"]) do
Map.put(data, "url", data["url"]["href"])
else
data
end
end
def maybe_fix_user_object(data) do
data
|> maybe_fix_user_url
end
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def update_following_followers_counters(user) do
info = %{}
following = fetch_counter(user.following_address)
info = if following, do: Map.put(info, :following_count, following), else: info
followers = fetch_counter(user.follower_address)
info = if followers, do: Map.put(info, :follower_count, followers), else: info
User.set_info_cache(user, info)
end
defp fetch_counter(url) do
with {:ok, %{body: body, status: code}} when code in 200..299 <-
Pleroma.HTTP.get(
url,
[{:Accept, "application/activity+json"}]
),
{:ok, data} <- Jason.decode(body) do
data["totalItems"]
end
end
end