31 lines
999 B
Elixir
31 lines
999 B
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Mobilizon.Web.Upload.Filter.Exiftool do
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@moduledoc """
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Strips GPS related EXIF tags and overwrites the file in place.
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Also strips or replaces filesystem metadata e.g., timestamps.
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"""
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alias Mobilizon.Web.Upload
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@behaviour Mobilizon.Web.Upload.Filter
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@spec filter(Upload.t()) :: {:ok, any()} | {:error, String.t()}
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# webp is not compatible with exiftool at this time
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def filter(%Upload{content_type: "image/webp"}), do: {:ok, :noop}
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def filter(%Upload{tempfile: file, content_type: "image" <> _}) do
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case System.cmd("exiftool", ["-overwrite_original", "-gps:all=", file], parallelism: true) do
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{_response, 0} -> {:ok, :filtered}
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{error, 1} -> {:error, error}
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end
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rescue
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_e in ErlangError ->
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{:error, "exiftool command not found"}
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end
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def filter(_), do: {:ok, :noop}
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end
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