forked from AkkomaGang/akkoma
fix S3 links encoding in Mediaproxy
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2 changed files with 22 additions and 0 deletions
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@ -19,11 +19,16 @@ def url(url) do
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else
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secret = Application.get_env(:pleroma, Pleroma.Web.Endpoint)[:secret_key_base]
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# Must preserve `%2F` for compatibility with S3 (https://git.pleroma.social/pleroma/pleroma/issues/580)
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replacement = get_replacement(url, ":2F:")
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# The URL is url-decoded and encoded again to ensure it is correctly encoded and not twice.
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base64 =
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url
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|> String.replace("%2F", replacement)
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|> URI.decode()
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|> URI.encode()
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|> String.replace(replacement, "%2F")
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|> Base.url_encode64(@base64_opts)
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sig = :crypto.hmac(:sha, secret, base64)
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@ -60,4 +65,12 @@ def build_url(sig_base64, url_base64, filename \\ nil) do
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|> Enum.filter(fn value -> value end)
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|> Path.join()
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end
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defp get_replacement(url, replacement) do
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if String.contains?(url, replacement) do
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get_replacement(url, replacement <> replacement)
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else
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replacement
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end
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end
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end
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@ -140,6 +140,15 @@ test "uses the configured base_url" do
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assert String.starts_with?(encoded, Pleroma.Config.get([:media_proxy, :base_url]))
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end
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# https://git.pleroma.social/pleroma/pleroma/issues/580
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test "encoding S3 links (must preserve `%2F`)" do
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url =
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"https://s3.amazonaws.com/example/test.png?X-Amz-Credential=your-access-key-id%2F20130721%2Fus-east-1%2Fs3%2Faws4_request"
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encoded = url(url)
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assert decode_result(encoded) == url
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end
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end
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describe "when disabled" do
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