X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fobject%2Ffetcher.ex;h=24dc7cb95d37a69b468ed6890d1c5b14c8c7268f;hb=68894089e845220e06d77401d15e399cb0d3882c;hp=e74c87269f2d5b5bc47e039818dae47a3c93b5c8;hpb=6931dbfa582f0e5360e74dffdceee1b9ed564b17;p=akkoma
diff --git a/lib/pleroma/object/fetcher.ex b/lib/pleroma/object/fetcher.ex
index e74c87269..8309ef64a 100644
--- a/lib/pleroma/object/fetcher.ex
+++ b/lib/pleroma/object/fetcher.ex
@@ -1,14 +1,17 @@
# Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors
+# Copyright © 2017-2021 Pleroma Authors
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Object.Fetcher do
alias Pleroma.HTTP
+ alias Pleroma.Instances
+ alias Pleroma.Maps
alias Pleroma.Object
alias Pleroma.Object.Containment
alias Pleroma.Repo
alias Pleroma.Signature
alias Pleroma.Web.ActivityPub.InternalFetchActor
+ alias Pleroma.Web.ActivityPub.ObjectValidator
alias Pleroma.Web.ActivityPub.Transmogrifier
alias Pleroma.Web.Federator
@@ -23,21 +26,72 @@ defmodule Pleroma.Object.Fetcher do
Ecto.Changeset.put_change(changeset, :updated_at, updated_at)
end
- defp maybe_reinject_internal_fields(data, %{data: %{} = old_data}) do
+ defp maybe_reinject_internal_fields(%{data: %{} = old_data}, new_data) do
+ has_history? = fn
+ %{"formerRepresentations" => %{"orderedItems" => list}} when is_list(list) -> true
+ _ -> false
+ end
+
internal_fields = Map.take(old_data, Pleroma.Constants.object_internal_fields())
- Map.merge(data, internal_fields)
+ remote_history_exists? = has_history?.(new_data)
+
+ # If the remote history exists, we treat that as the only source of truth.
+ new_data =
+ if has_history?.(old_data) and not remote_history_exists? do
+ Map.put(new_data, "formerRepresentations", old_data["formerRepresentations"])
+ else
+ new_data
+ end
+
+ # If the remote does not have history information, we need to manage it ourselves
+ new_data =
+ if not remote_history_exists? do
+ changed? =
+ Pleroma.Constants.status_updatable_fields()
+ |> Enum.any?(fn field -> Map.get(old_data, field) != Map.get(new_data, field) end)
+
+ %{updated_object: updated_object} =
+ new_data
+ |> Object.Updater.maybe_update_history(old_data,
+ updated: changed?,
+ use_history_in_new_object?: false
+ )
+
+ updated_object
+ else
+ new_data
+ end
+
+ Map.merge(new_data, internal_fields)
end
- defp maybe_reinject_internal_fields(data, _), do: data
+ defp maybe_reinject_internal_fields(_, new_data), do: new_data
@spec reinject_object(struct(), map()) :: {:ok, Object.t()} | {:error, any()}
- defp reinject_object(struct, data) do
- Logger.debug("Reinjecting object #{data["id"]}")
+ defp reinject_object(%Object{data: %{"type" => "Question"}} = object, new_data) do
+ Logger.debug("Reinjecting object #{new_data["id"]}")
+
+ with data <- maybe_reinject_internal_fields(object, new_data),
+ {:ok, data, _} <- ObjectValidator.validate(data, %{}),
+ changeset <- Object.change(object, %{data: data}),
+ changeset <- touch_changeset(changeset),
+ {:ok, object} <- Repo.insert_or_update(changeset),
+ {:ok, object} <- Object.set_cache(object) do
+ {:ok, object}
+ else
+ e ->
+ Logger.error("Error while processing object: #{inspect(e)}")
+ {:error, e}
+ end
+ end
- with data <- Transmogrifier.fix_object(data),
- data <- maybe_reinject_internal_fields(data, struct),
- changeset <- Object.change(struct, %{data: data}),
+ defp reinject_object(%Object{} = object, new_data) do
+ Logger.debug("Reinjecting object #{new_data["id"]}")
+
+ with new_data <- Transmogrifier.fix_object(new_data),
+ data <- maybe_reinject_internal_fields(object, new_data),
+ changeset <- Object.change(object, %{data: data}),
changeset <- touch_changeset(changeset),
{:ok, object} <- Repo.insert_or_update(changeset),
{:ok, object} <- Object.set_cache(object) do
@@ -51,8 +105,8 @@ defmodule Pleroma.Object.Fetcher do
def refetch_object(%Object{data: %{"id" => id}} = object) do
with {:local, false} <- {:local, Object.local?(object)},
- {:ok, data} <- fetch_and_contain_remote_object_from_id(id),
- {:ok, object} <- reinject_object(object, data) do
+ {:ok, new_data} <- fetch_and_contain_remote_object_from_id(id),
+ {:ok, object} <- reinject_object(object, new_data) do
{:ok, object}
else
{:local, true} -> {:ok, object}
@@ -62,16 +116,20 @@ defmodule Pleroma.Object.Fetcher do
# Note: will create a Create activity, which we need internally at the moment.
def fetch_object_from_id(id, options \\ []) do
- with {_, nil} <- {:fetch_object, Object.get_cached_by_ap_id(id)},
+ with %URI{} = uri <- URI.parse(id),
+ # If we have instance restrictions, apply them here to prevent fetching from unwanted instances
+ {:ok, nil} <- Pleroma.Web.ActivityPub.MRF.SimplePolicy.check_reject(uri),
+ {:ok, _} <- Pleroma.Web.ActivityPub.MRF.SimplePolicy.check_accept(uri),
+ {_, nil} <- {:fetch_object, Object.get_cached_by_ap_id(id)},
{_, true} <- {:allowed_depth, Federator.allowed_thread_distance?(options[:depth])},
{_, {:ok, data}} <- {:fetch, fetch_and_contain_remote_object_from_id(id)},
- {_, nil} <- {:normalize, Object.normalize(data, false)},
+ {_, nil} <- {:normalize, Object.normalize(data, fetch: false)},
params <- prepare_activity_params(data),
{_, :ok} <- {:containment, Containment.contain_origin(id, params)},
{_, {:ok, activity}} <-
{:transmogrifier, Transmogrifier.handle_incoming(params, options)},
{_, _data, %Object{} = object} <-
- {:object, data, Object.normalize(activity, false)} do
+ {:object, data, Object.normalize(activity, fetch: false)} do
{:ok, object}
else
{:allowed_depth, false} ->
@@ -80,8 +138,11 @@ defmodule Pleroma.Object.Fetcher do
{:containment, _} ->
{:error, "Object containment failed."}
- {:transmogrifier, {:error, {:reject, nil}}} ->
- {:reject, nil}
+ {:transmogrifier, {:error, {:reject, e}}} ->
+ {:reject, e}
+
+ {:transmogrifier, {:reject, e}} ->
+ {:reject, e}
{:transmogrifier, _} = e ->
{:error, e}
@@ -98,6 +159,9 @@ defmodule Pleroma.Object.Fetcher do
{:fetch, {:error, error}} ->
{:error, error}
+ {:reject, reason} ->
+ {:reject, reason}
+
e ->
e
end
@@ -106,12 +170,14 @@ defmodule Pleroma.Object.Fetcher do
defp prepare_activity_params(data) do
%{
"type" => "Create",
- "to" => data["to"],
- "cc" => data["cc"],
# Should we seriously keep this attributedTo thing?
"actor" => data["actor"] || data["attributedTo"],
"object" => data
}
+ |> Maps.put_if_present("to", data["to"])
+ |> Maps.put_if_present("cc", data["cc"])
+ |> Maps.put_if_present("bto", data["bto"])
+ |> Maps.put_if_present("bcc", data["bcc"])
end
def fetch_object_from_id!(id, options \\ []) do
@@ -121,11 +187,11 @@ defmodule Pleroma.Object.Fetcher do
{:error, %Tesla.Mock.Error{}} ->
nil
- {:error, "Object has been deleted"} ->
+ {:error, {"Object has been deleted", _id, _code}} ->
nil
{:reject, reason} ->
- Logger.info("Rejected #{id} while fetching: #{inspect(reason)}")
+ Logger.debug("Rejected #{id} while fetching: #{inspect(reason)}")
nil
e ->
@@ -145,12 +211,12 @@ defmodule Pleroma.Object.Fetcher do
date: date
})
- [{"signature", signature}]
+ {"signature", signature}
end
defp sign_fetch(headers, id, date) do
if Pleroma.Config.get([:activitypub, :sign_object_fetches]) do
- headers ++ make_signature(id, date)
+ [make_signature(id, date) | headers]
else
headers
end
@@ -158,15 +224,45 @@ defmodule Pleroma.Object.Fetcher do
defp maybe_date_fetch(headers, date) do
if Pleroma.Config.get([:activitypub, :sign_object_fetches]) do
- headers ++ [{"date", date}]
+ [{"date", date} | headers]
else
headers
end
end
+ def fetch_and_contain_remote_object_from_id(id)
+
+ def fetch_and_contain_remote_object_from_id(%{"id" => id}),
+ do: fetch_and_contain_remote_object_from_id(id)
+
def fetch_and_contain_remote_object_from_id(id) when is_binary(id) do
Logger.debug("Fetching object #{id} via AP")
+ with {:scheme, true} <- {:scheme, String.starts_with?(id, "http")},
+ {:ok, body} <- get_object(id),
+ {:ok, data} <- safe_json_decode(body),
+ :ok <- Containment.contain_origin_from_id(id, data) do
+ unless Instances.reachable?(id) do
+ Instances.set_reachable(id)
+ end
+
+ {:ok, data}
+ else
+ {:scheme, _} ->
+ {:error, "Unsupported URI scheme"}
+
+ {:error, e} ->
+ {:error, e}
+
+ e ->
+ {:error, e}
+ end
+ end
+
+ def fetch_and_contain_remote_object_from_id(_id),
+ do: {:error, "id must be a string"}
+
+ defp get_object(id) do
date = Pleroma.Signature.signed_date()
headers =
@@ -174,19 +270,28 @@ defmodule Pleroma.Object.Fetcher do
|> maybe_date_fetch(date)
|> sign_fetch(id, date)
- Logger.debug("Fetch headers: #{inspect(headers)}")
+ case HTTP.get(id, headers) do
+ {:ok, %{body: body, status: code, headers: headers}} when code in 200..299 ->
+ case List.keyfind(headers, "content-type", 0) do
+ {_, content_type} ->
+ case Plug.Conn.Utils.media_type(content_type) do
+ {:ok, "application", "activity+json", _} ->
+ {:ok, body}
- with {:scheme, true} <- {:scheme, String.starts_with?(id, "http")},
- {:ok, %{body: body, status: code}} when code in 200..299 <- HTTP.get(id, headers),
- {:ok, data} <- Jason.decode(body),
- :ok <- Containment.contain_origin_from_id(id, data) do
- {:ok, data}
- else
- {:ok, %{status: code}} when code in [404, 410] ->
- {:error, "Object has been deleted"}
+ {:ok, "application", "ld+json",
+ %{"profile" => "https://www.w3.org/ns/activitystreams"}} ->
+ {:ok, body}
- {:scheme, _} ->
- {:error, "Unsupported URI scheme"}
+ _ ->
+ {:error, {:content_type, content_type}}
+ end
+
+ _ ->
+ {:error, {:content_type, nil}}
+ end
+
+ {:ok, %{status: code}} when code in [404, 410] ->
+ {:error, {"Object has been deleted", id, code}}
{:error, e} ->
{:error, e}
@@ -196,8 +301,6 @@ defmodule Pleroma.Object.Fetcher do
end
end
- def fetch_and_contain_remote_object_from_id(%{"id" => id}),
- do: fetch_and_contain_remote_object_from_id(id)
-
- def fetch_and_contain_remote_object_from_id(_id), do: {:error, "id must be a string"}
+ defp safe_json_decode(nil), do: {:ok, nil}
+ defp safe_json_decode(json), do: Jason.decode(json)
end