mirror of
https://akkoma.dev/AkkomaGang/akkoma.git
synced 2024-12-29 20:13:18 +00:00
82 lines
2.2 KiB
Elixir
82 lines
2.2 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.Signature do
|
|
@behaviour HTTPSignatures.Adapter
|
|
|
|
alias Pleroma.EctoType.ActivityPub.ObjectValidators
|
|
alias Pleroma.Keys
|
|
alias Pleroma.User
|
|
alias Pleroma.Web.ActivityPub.ActivityPub
|
|
|
|
@known_suffixes ["/publickey", "/main-key"]
|
|
|
|
def key_id_to_actor_id(key_id) do
|
|
uri =
|
|
key_id
|
|
|> URI.parse()
|
|
|> Map.put(:fragment, nil)
|
|
|> Map.put(:query, nil)
|
|
|> remove_suffix(@known_suffixes)
|
|
|
|
maybe_ap_id = URI.to_string(uri)
|
|
|
|
case ObjectValidators.ObjectID.cast(maybe_ap_id) do
|
|
{:ok, ap_id} ->
|
|
{:ok, ap_id}
|
|
|
|
_ ->
|
|
case Pleroma.Web.WebFinger.finger(maybe_ap_id) do
|
|
{:ok, %{"ap_id" => ap_id}} -> {:ok, ap_id}
|
|
_ -> {:error, maybe_ap_id}
|
|
end
|
|
end
|
|
end
|
|
|
|
defp remove_suffix(uri, [test | rest]) do
|
|
if not is_nil(uri.path) and String.ends_with?(uri.path, test) do
|
|
Map.put(uri, :path, String.replace(uri.path, test, ""))
|
|
else
|
|
remove_suffix(uri, rest)
|
|
end
|
|
end
|
|
|
|
defp remove_suffix(uri, []), do: uri
|
|
|
|
def fetch_public_key(conn) do
|
|
with %{"keyId" => kid} <- HTTPSignatures.signature_for_conn(conn),
|
|
{:ok, actor_id} <- key_id_to_actor_id(kid),
|
|
{:ok, public_key} <- User.get_public_key_for_ap_id(actor_id) do
|
|
{:ok, public_key}
|
|
else
|
|
e ->
|
|
{:error, e}
|
|
end
|
|
end
|
|
|
|
def refetch_public_key(conn) do
|
|
with %{"keyId" => kid} <- HTTPSignatures.signature_for_conn(conn),
|
|
{:ok, actor_id} <- key_id_to_actor_id(kid),
|
|
{:ok, _user} <- ActivityPub.make_user_from_ap_id(actor_id),
|
|
{:ok, public_key} <- User.get_public_key_for_ap_id(actor_id) do
|
|
{:ok, public_key}
|
|
else
|
|
e ->
|
|
{:error, e}
|
|
end
|
|
end
|
|
|
|
def sign(%User{keys: keys} = user, headers) do
|
|
with {:ok, private_key, _} <- Keys.keys_from_pem(keys) do
|
|
HTTPSignatures.sign(private_key, user.ap_id <> "#main-key", headers)
|
|
end
|
|
end
|
|
|
|
def signed_date, do: signed_date(NaiveDateTime.utc_now())
|
|
|
|
def signed_date(%NaiveDateTime{} = date) do
|
|
Timex.format!(date, "{WDshort}, {0D} {Mshort} {YYYY} {h24}:{m}:{s} GMT")
|
|
end
|
|
end
|