forked from potsda.mn/mobilizon
Refactor transmogrifier Delete to avoid spoofed Delete being accepted
Signed-off-by: Thomas Citharel <tcit@tcit.fr>
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@ -101,7 +101,8 @@ defmodule Mobilizon.Federation.ActivityPub.Permission do
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false
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end
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else
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true
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# Object is not owned by a group
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false
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end
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end
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@ -602,42 +602,28 @@ defmodule Mobilizon.Federation.ActivityPub.Transmogrifier do
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) do
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Logger.info("Handle incoming to delete an object")
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with actor_url <- Utils.get_actor(data),
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{:actor, {:ok, %Actor{} = actor}} <-
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{:actor, ActivityPubActor.get_or_fetch_actor_by_url(actor_url)},
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object_id <- Utils.get_url(object),
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{:ok, object} <- is_group_object_gone(object_id),
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{:origin_check, true} <-
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{:origin_check,
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Utils.origin_check_from_id?(actor_url, object_id) ||
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Permission.can_delete_group_object?(actor, object)},
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{:ok, activity, object} <- Actions.Delete.delete(object, actor, false) do
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{:ok, activity, object}
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else
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{:origin_check, false} ->
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Logger.warn("Object origin check failed")
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:error
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actor_url = Utils.get_actor(data)
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object_id = Utils.get_url(object)
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{:actor, {:error, _err}} ->
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case ActivityPubActor.get_or_fetch_actor_by_url(actor_url) do
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{:error, _err} ->
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{:error, :unknown_actor}
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{:error, e} ->
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Logger.debug(inspect(e))
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{:ok, %Actor{} = actor} ->
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case is_group_object_gone(object_id) do
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{:ok, object} ->
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if Utils.origin_check_from_id?(actor_url, object_id) ||
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Permission.can_delete_group_object?(actor, object) do
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Actions.Delete.delete(object, actor, false)
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else
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Logger.warn("Object origin check failed")
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:error
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end
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# Sentry.capture_message("Error while handling a Delete activity",
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# extra: %{data: data}
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# )
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:error
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e ->
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Logger.error(inspect(e))
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# Sentry.capture_message("Error while handling a Delete activity",
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# extra: %{data: data}
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# )
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:error
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{:error, err} ->
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Logger.debug(inspect(err))
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{:error, err}
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end
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end
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end
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